Muscle exercise device with protection function

Abstract

The invention relates to the technical field of exercise equipment, and discloses a muscle exercise device with a protection function, which comprises a horizontal holding rod fixedly connected with the end part of a steel wire rope, and further comprises a protection assembly, the protection assembly comprises a box body, an energy consumption part and a driving part, the box body is fixedly connected to a bearing bottom frame, and a sliding groove is formed in the side wall of the box body in the width direction in a penetrating manner; a horizontal connecting rod is slidably connected into the sliding groove, the energy dissipation part comprises a crossed shear frame and soft damping plates distributed on the two sides of the crossed shear frame, the driving part comprises two rotating wheels, a rotating wheel driving piece and a plurality of sets of elastic swing pieces hinged to the peripheral sides of the rotating wheels, and the rotating wheels are close to the two damping plates. And the rotating wheel driving piece drives the rotating wheel to rotate at a high speed and drives the elastic swinging piece to centrifugally swing to extrude the corresponding damping plate to slide towards one side of the contracted shearing frame. The instantaneous retraction speed of the steel wire rope is reduced, so that arm and back muscle groups of the trainee are protected, and the risk that the two arms of the trainee are dislocated is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of exercise equipment, and in particular to a muscle exercise device with a protective function. Background Art

[0002] Long-term training of the back and limb muscles can continuously train the muscle groups of the back and adjacent limbs, thereby improving poor posture problems. Training for the muscles of this part of the body is usually completed with training equipment.

[0003] At present, most of the commonly used arm and back muscle training devices and equipment will use high-position tensioners. The existing high-position tensioners include a load-bearing frame, two guide columns, multiple horizontally stacked counterweights with avoidance holes in the middle and on both sides, a wire rope, and a guide wheel for guiding the wire rope, wherein the two guide columns will be erected on one side of the load-bearing frame, and multiple counterweights will be stacked at one place of the guide columns. The two guide columns pass through the avoidance holes on both sides of the counterweights. The middle of the upper end of the highest counterweight will be fixed to one end of the wire rope through a connector, and the other end of the wire rope will be fixed to the wire rope through a connector. One end extends upward, passes over two guide wheels and finally extends downward. A grip bar is usually set at the end for the trainee to hold. A lifting plate with holes is fixed on the middle of the top counterweight. Sockets that can be aligned with the holes of the lifting plate are horizontally opened on the same side of each counterweight below. When training, the trainee only needs to insert the plug rod horizontally into the bottom socket of the number of counterweights that need to be lifted so that the plug rod can be connected to the lifting plate. At this time, open both hands and hold the grip bar tightly, pull the grip bar downward, and the grip bar can drive multiple counterweights to be lifted synchronously through the wire rope.

[0004] However, the existing high-position tension equipment for muscle training has an incomplete protection function, and it is easy for beginners to injure their muscles when using it. This is because it is relatively easy to pull down using the high-position tension equipment, and beginners may gradually configure the number of counterweights corresponding to their own pull-down limit weight. However, with the increase of the counterweights, beginners will consume more arm and back strength in the pull-down process. At this time, they need to lift up with both arms on the basis of the heavier impedance counterweights to reset the multiple counterweights. In this process, many beginners will not be able to continue to provide a force equal to the counterweights due to weakness, so that the counterweights are easy to fall quickly. At this time, the back muscles and upper arm muscles of the beginners who are applying force will be instantly pulled upward, which will eventually lead to strain of the arm and back muscles. Even when the counterweights are overloaded, there is a risk of dislocation of the trainees' arms. Summary of the invention

[0005] The invention provides a muscle training device with a protective function, which protects the arm and back muscle groups of a trainee by slowing down the instantaneous retraction speed of a steel wire rope, thereby avoiding the risk of dislocation of both arms of the trainee.

[0006] The present invention provides a muscle training device with a protective function, comprising a horizontal gripping rod fixedly connected to the end of a steel wire rope, and also comprising a protective component for slowing down the instantaneous retraction speed of the steel wire rope, the protective component comprising: a box body, an energy consuming part, and a driving part, the box body is fixedly connected to the load-bearing bottom frame, a sliding groove is penetrated through the side wall of the box body along its width direction, a horizontal connecting rod is slidably connected in the sliding groove along its length direction, the two ends of the connecting rod extending out of the sliding groove are respectively connected to the two ends of the gripping rod through two connecting pieces, the movement of the gripping rod enables the connecting piece to drive the connecting rod to slide along the sliding groove, specifically, a cavity is connected and opened inside the box body below the sliding groove, the energy consuming part is placed in the box body and Located in the second cavity below the slide slot, the energy-absorbing part includes a shear frame and soft damping plates distributed on both sides of the shear frame. One end of the shear frame is hinged to the connecting rod and the other end is hinged to the box. The two damping plates can slide horizontally in opposite directions. The driving part includes two wheels, a wheel driving component and multiple groups of elastic pendulums hinged to the sides of the wheels. The wheel is close to the two damping plates. The wheel is rotatably connected to the box through a vertically arranged axle. The wheel driving component is respectively connected to the connecting rod and the two wheels. When the wire rope retracts instantly, the wheel driving component drives the wheel to rotate at a high speed and drives the elastic pendulum to swing centrifugally to squeeze the corresponding damping plate to slide toward the side of the contracted shear frame.

[0007] Preferably, both ends of the two damping plates are connected to limit springs. When the limit springs are in an initial state without extension and contraction, a gap is left between the damping plate and the uncontracted shear frame. The two damping plates are abutted against a push rod on the sides away from each other. The middle part of the push rod is hinged to the box through a vertically arranged hinge shaft. One end of the push rod is in contact with the damping plate, and the other end extends toward one side of the corresponding rotating wheel with a gap left between it and the rotating wheel. The high-speed rotation of the rotating wheel causes the deflected elastic pendulum to collide with the push rod and rotate it around the hinge shaft to squeeze the damping plate.

[0008] Preferably, one end of the cross-shear frame is connected to the connecting rod through a cross bar, the cross bar is laterally fixed to the lower part of the connecting rod, the center line of the cross bar is perpendicular to the center line of the connecting rod, the cross-shear frame is hinged to the end of the cross bar, and the rotary wheel driving component includes: two rack plates and two first gears, the two rack plates are respectively fixed to the two sides of the cross bar, the two rotary wheels are located below the two sides of the cross bar, the two first gears are both mounted and fixed to the upper part of the wheel axles of the two rotary wheels, and the first gears are meshed with the adjacent rack plates.

[0009] Preferably, a plurality of placement cavities, the same number as the elastic pendulum, are opened on the circumference of the rotating wheel, and the placement cavities of the two rotating wheels are symmetrical about the center line of the cross bar. The elastic pendulum comprises: a swing arm, a counterweight, and a tension spring. One end of the swing arm is hinged to the inner wall of the placement cavity of the rotating wheel, the counterweight is fixedly connected to the other end of the swing arm, the tension spring is fixedly connected to the middle part of the swing arm, and the other end is fixedly connected to the inner wall of the placement cavity. When the tension spring is in an initial unstretched state, the counterweight and the swing arm are both placed in the placement cavity. When the rotating wheel rotates at high speed, the counterweight extends out of the placement cavity along with the swing arm and abuts against the collision rod.

[0010] Preferably, the connecting member includes a pulling rope and a guide wheel, one end of the pulling rope is fixedly connected to the lower end of the grip rod, the guide wheel is rotatably connected to the supporting frame through a rotating frame, the guide wheel is located at the bottom of the grip rod, the other end of the pulling rope extends vertically into the guide wheel and is wound around and turned to one side of the connecting rod, and the other end of the pulling rope is fixedly connected to the end of the connecting rod extending out of the slide groove.

[0011] Preferably, a cavity is provided on the outer side of the push rod, a liquid storage tank is provided vertically on one side of the cavity close to the rotating wheel, an energy-consuming component is provided in the cavity, and the energy-consuming component includes: a stirring blade, a viscous liquid, and a push plate. The stirring blade is placed in the liquid storage tank, and the stirring blade is rotatably connected to the inner wall of the box body through a laterally fixed rotating shaft. A second gear is fixedly mounted on the end of the rotating shaft away from the push rod, and the lower part of the connecting rod is meshed with the second gear through a rack. The viscous liquid is filled in the liquid storage tank, and the liquid level is adjacent to the bottom of the stirring blade. The push plate is sealed and movably connected to the side of the liquid storage tank away from the end of the rotating shaft. The push plate is connected through a push plate driving member. When the wire rope retracts rapidly, the push plate driving member drives the push plate to squeeze the viscous liquid to raise the liquid level and at least submerge the lower part of the stirring blade.

[0012] Preferably, the damping plate includes a plate body sliding with the inner wall of the box and a rubber strip connected to one side close to the shear frame. The rubber strip is inclined on one side close to the shear frame. The thickness of the rubber strip close to the rotating wheel is less than that of the rubber strip away from the rotating wheel.

[0013] Preferably, the cross-shear frame is connected to extrusion wheels at the hinge points on both sides, and the outer surface of the extrusion wheel is provided with a rubber layer.

[0014] Preferably, the push plate driving member includes a push rod and a compression spring, one end of the push rod is fixedly connected to the end of one side of the push plate away from the rotating shaft, and the other end passes through the inner wall of the box body and abuts against the adjacent abutment rod.

[0015] Preferably, movable grooves are vertically opened on both sides of the upper part of the box body, the movable grooves are connected to the sliding grooves, and the connecting rods are connected to pedals at the two movable grooves corresponding to each other, and the pedals are reset by pulling a reset spring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy dissipation part can slow down the kinetic energy of the steel wire rope when it instantly retracts upward, and the driving part can ensure that the two damping plates are driven close to each other only when the steel wire rope retracts at high speed. Specifically, when a beginner uses a high-position tensioning device and configures a number of counterweights corresponding to a weight close to his or her own pull-down limit, and it is difficult to exert a counter-pulling force to counteract the heavier counterweights, the connecting pieces connected to the two ends of the grip rod will drive the connecting rod to move rapidly along the slide groove toward the side close to the seat. As the connecting rod moves rapidly, the connecting rod drives the two wheels toward The two wheels rotate at high speed in relative directions, and at the same time, the shear frame connected to the connecting rod will also shrink in a shear-like manner toward the side close to the seat. During the shrinkage process, the hinge points on both sides of the shear frame will continue to extend toward both sides and gradually approach the damping plate. At this time, the high-speed rotating wheels will drive the multiple groups of elastic pendulums connected to each other to rotate centrifugally, thereby driving the two damping plates to move toward each other. At this time, multiple hinge points of the shear frame will contact the damping plate, and the damping plate provides reaction impedance to the shear frame, so that the high kinetic energy transmitted to the shear frame is gradually consumed in the gradual sliding and squeezing along the damping plate, thereby slowing down the speed at which the wire rope moves upward.

[0017] This device can provide a relatively complete protection function by arranging a protection component on the high-position tensioner, which can avoid the risk of beginners having difficulty supporting the reaction force of multiple weights after pulling down and causing instant damage to the muscle groups of the arms and back and the risk of dislocation of both arms, thereby playing a role in protecting the muscles of the trainees. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a muscle training device with a protective function provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of a muscle training device with a protective function provided by an embodiment of the present invention from a side view;

[0020] Figure 3 A schematic diagram of a partial cross-sectional structure from a top view of a muscle training device with a protective function provided by an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of a partial cross-sectional structure from a top view of a muscle training device with a protective function provided by an embodiment of the present invention;

[0022] Figure 5 for Figure 4 A partial enlarged view of part A;

[0023] Figure 6 for Figure 4 A partial enlarged view of part B;

[0024] Figure 7 A schematic diagram of the structure of a muscle training device with a protective function provided by an embodiment of the present invention, in which two supporting rods are close to each other;

[0025] Figure 8 A schematic diagram of the structure of a muscle training device with a protective function provided by an embodiment of the present invention from a top view;

[0026] Fig. 9 A schematic diagram of the structure of a liquid storage tank from a side view in a muscle training device with a protective function provided by an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Load-bearing chassis; 2. Grip; 3. Protection assembly; 31. Box; 311. Slide; 312. Cavity; 3121. Liquid storage tank; 313. Moving tank; 32. Connecting rod; 33. Connecting piece; 331. Pull rope; 332. Guide wheel; 34. Energy dissipation part; 341. Cross-shear frame; 342. Damping plate; 3421. Plate; 3422. Rubber strip; 35. Driving part; 351. Rotating wheel; 3511 , placement cavity; 352, elastic pendulum; 3521, swing arm; 3522, counterweight; 3523, tension spring; 4, limit spring; 5, push rod; 6, cross bar; 7, rack plate; 8, first gear; 9, energy-absorbing component; 91, stirring blade; 92, rotating shaft; 93, second gear; 94, viscous liquid; 95, push plate; 10, push rod; 11, compression spring; 12, foot pedal; 13, reset spring. DETAILED DESCRIPTION

[0029] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0030] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] refer to Figure 1 , Figure 3 and Figure 4The present invention provides a muscle training device with a protective function, including a horizontal grip bar 2 fixedly connected to the end of a steel wire rope, and also including a protective component 3 for slowing down the instantaneous retraction speed of the steel wire rope. The protective component 3 includes: a box body 31, an energy dissipation part 34, and a driving part 35. The box body 31 is fixedly connected to the load-bearing base frame 1. A slide groove 311 is penetrated through the side wall of the box body 31 along its width direction. A horizontal connecting rod 32 is slidably connected in the slide groove 311 along its length direction. The two ends of the connecting rod 32 extending out of the slide groove 311 are respectively connected to the two ends of the grip bar 2 through two connecting members 33. The movement of the grip bar 2 allows the connecting member 33 to drive the connecting rod 32 to slide along the slide groove 311. Specifically, a cavity is provided in the box body 31 below the slide groove 311. The energy dissipation part 34 is placed in the box body 31 and is located in the slide groove 311. In the second cavity below, the energy dissipation part 34 includes a shear frame 341 and soft damping plates 342 distributed on both sides of the shear frame 341. One end of the shear frame 341 is hinged to the connecting rod 32 and the other end is hinged to the box 31. The two damping plates 342 can slide horizontally in opposite directions. The driving part 35 includes two wheels 351, a wheel driving part and a plurality of groups of elastic pendulums 352 hinged to the sides of the wheels 351. The wheel 351 is close to the two damping plates 342. The wheel 351 is rotatably connected to the box 31 through a vertically arranged axle. The wheel driving part is respectively connected to the connecting rod 32 and the two wheels 351. When the wire rope retracts instantly, the wheel driving part drives the wheel 351 to rotate at a high speed and drives the elastic pendulum 352 to swing centrifugally to squeeze the corresponding damping plate 342 to slide toward the side of the contracted shear frame 341.

[0032] In the above embodiments, the device can provide a more complete protection function for the high-position tensioner by arranging a protection component 3 on the high-position tensioner, which can prevent beginners from having difficulty supporting the reaction force of multiple counterweights after pulling down and causing instant damage to the arm and back muscle groups. Furthermore, the box body 31 is arranged on the load-bearing frame 1 of the high-position tensioner close to the seat and the guide column side, which can be fixed by welding or by high-strength bolts. The energy-absorbing part 34 arranged therein can slow down the kinetic energy of the steel wire rope when it instantly retracts upward, and the driving part 35 arranged therein can ensure that the two damping plates 342 are driven close to each other only when the steel wire rope retracts at high speed. Specifically, when beginners use the high-position tensioning equipment and configure the number of counterweights corresponding to their own pull-down limit weight, it is difficult to exert a counter-pulling force that counteracts the heavier counterweights. The connecting piece 33 connected to the two ends of the grip bar 2 will drive the connecting rod 32 to move quickly along the slide groove 311 toward the side close to the seat. , as the connecting rod 32 moves rapidly, the connecting rod 32 drives the two rotating wheels 351 to rotate at high speed in opposite directions through the rotating wheel driving member. At the same time, the cross-shear frame 341 connected to the connecting rod 32 will also shrink in a cross-shear manner toward the side close to the seat. During the shrinkage process, the hinge points on both sides of the cross-shear frame 341 will continue to extend toward both sides and gradually approach the damping plate 342. At this time, the high-speed rotating wheels 351 will drive the multiple groups of elastic pendulums 352 connected to each other to rotate and swing centrifugally, thereby driving the two damping plates 342 to move in a direction close to each other. At this time, the multiple hinge points of the cross-shear frame 341 will contact the damping plate 342, and the damping plate 342 provides a reaction impedance force to the cross-shear frame 341, so that the high kinetic energy transmitted to the cross-shear frame 341 is gradually consumed in the gradual sliding and squeezing along the damping plate 342, thereby achieving the purpose of slowing down the speed of the wire rope moving up, thereby protecting the arm and back muscle groups for beginners, and greatly reducing or even eliminating the risk of dislocation of the trainees' arms.

[0033] Further, refer to Figure 4 and Figure 5The two ends of the two damping plates 342 are connected to the limit spring 4. When the limit spring 4 is in the initial state of not being stretched, there is a gap between the damping plate 342 and the uncontracted shear frame 341. The two damping plates 342 are both abutted against a push rod 5 on the side away from each other. The middle part of the push rod 5 is hinged to the box body 31 through a vertical hinge shaft. One end of the push rod 5 is in contact with the damping plate 342, and the other end extends toward the side of the corresponding rotating wheel 351 and is between the rotating wheel 351 and the push rod 5. Leave a gap, the high-speed rotation of the rotating wheel 351 makes the deflected elastic pendulum 352 collide with the rod 5 and rotate around the hinge axis to squeeze the damping plate 342. The damping plate 342 includes a plate body 3421 that slides with the inner wall of the box body 31 and a rubber strip 3422 connected to the side close to the shear frame 341. The rubber strip 3422 is inclined on the side close to the shear frame 341. The thickness of the rubber strip 3422 close to the rotating wheel 351 is less than the thickness of the rubber strip 3422 on the side away from the rotating wheel 351.

[0034] In the above embodiments, specifically, sliding grooves are provided at both ends of the box body 31 corresponding to the damping plate 342, and the damping plate 342 can slide horizontally along the sliding groove 311 to approach the shear frame 341. The limit spring 4 is placed in the sliding groove, one end of which is fixedly connected to the inner wall of the box body 31, and the other end is fixedly connected to the plate body 3421 of the damping plate 342. By limiting the thickness of the rubber strip 3422 to be different, it can be achieved that when the shear frame 341 is close to the connecting rod 32, the contact tightness with the rubber strip 3422 is less than the contact tightness with the rubber strip 3422 at the principle connecting rod 32, thereby achieving the effect of buffering and providing damping, wherein the rubber strip 3422 can realize deformation ability faster after being squeezed, and thus its kinetic energy can be slowed down by the sinking of the shear frame 341.

[0035] Further, refer to Figure 3 and Figure 4 One end of the cross-shear frame 341 is connected to the connecting rod 32 through the cross bar 6. The cross bar 6 is laterally fixed to the lower part of the connecting rod. The center line of the cross bar 6 is perpendicular to the center line of the connecting rod. The cross-shear frame 341 is hinged to the end of the cross bar 6. The rotating wheel driving part includes: two rack plates 7 and two first gears 8. The two rack plates 7 are respectively fixed to the two sides of the cross bar 6. The two rotating wheels 351 are located below the two sides of the cross bar 6. The two first gears 8 are both mounted and fixed on the upper part of the wheel axle of the two rotating wheels 351. The first gears 8 are meshed with the adjacent rack plates 7.

[0036] In the above embodiments, the cross bar 6 is provided to connect the connecting rod 32 and cooperate with the rack plate 7 to drive the two rotating wheels 351. The two tooth surfaces of the rack plate 7 extend toward the side away from each other, and the length of the cross bar 6 can ensure the continuous meshing rotation of the two first gears 8. When the connecting rod 32 is pulled by the wire rope and slides rapidly along the slide groove 311, the cross bar 6 will synchronously move horizontally in the box body 31, and the two first gears 8 will be driven to rotate at high speed through the two rack plates 7. The high-speed rotating gear will be driven to rotate at high speed through the axle of the rotating wheel 351. The elastic pendulum 352 can drive the damping plate 342 to increase the damping of the shear frame 341 under high-speed rotation to achieve the purpose of deceleration.

[0037] Further, refer to Figure 4 , Figure 5 and Figure 7 A plurality of placement cavities 3511, the same number as the elastic pendulum members 352, are provided on the circumference of the rotating wheel 351. The placement cavities 3511 of the two rotating wheels 351 are symmetrical about the center line of the cross bar 6. The elastic pendulum member 352 includes: a swing arm 3521, a counterweight 3522, and a tension spring 3523. One end of the swing arm 3521 is hinged to the inner wall of the placement cavity 3511 of the rotating wheel 351, the counterweight 3522 is fixedly connected to the other end of the swing arm 3521, the tension spring 3523 is fixedly connected to the middle part of the swing arm 3521, and the other end is fixedly connected to the inner wall of the placement cavity 3511. When the tension spring 3523 is in an unstretched initial state, the counterweight 3522 and the swing arm 3521 are both placed in the placement cavity 3511. When the rotating wheel 351 rotates at high speed, the counterweight 3522 extends out of the placement cavity 3511 along with the swing arm 3521 and abuts against the collision rod 5.

[0038] In the above embodiment, the number of the elastic swing members 352 is preferably six or more, and they are evenly distributed on the circumference of the rotating wheel 351, which can ensure the stability of its kinetic energy after rotation. Since the rotating wheel driving member is meshed by the first gear 8, so that the two rotating wheels 351 have different rotation directions, in order to ensure normal application, the placement cavity 3511 is symmetrical about the center line of the cross bar 6. Therefore, after the two rotating wheels 351 rotate in opposite directions, the counterweight body 3522 can drive the lighter swing arm 3521 to be thrown out of the placement cavity 3511 under the centrifugal action, wherein the tensile elastic The tension of spring 3523 can only ensure that the counterweight body 3522 and the swing arm 3521 are reset, and the counterweight body 3522 is kept in the placement cavity 3511 when the rotation speed of the rotating wheel 351 is not high. When the rotation speed of the rotating wheel 351 is high, the tension spring 3523 will also be in a stretched state. When the wire rope retracts faster and the rotation speed of the rotating wheel 351 is higher, the extended length of the counterweight body 3522 will be longer, and it will continue to contact and collide with the push rod 5, so that the push rod 5 rotates along the hinge axis and squeezes the damping plate 342, thereby achieving the effect of mechanized increase of the damping force to cope with the instantaneous retraction of the wire rope.

[0039] Further, refer to Figure 1 and Figure 2 The connecting member 33 includes a pulling rope 331 and a guide wheel 332. One end of the pulling rope 331 is fixedly connected to the lower end of the handle 2. The guide wheel 332 is rotatably connected to the supporting frame 1 through a rotating frame. The guide wheel 332 is located at the bottom of the handle 2. The other end of the pulling rope 331 extends vertically into the guide wheel 332 and is turned around to one side of the connecting rod 32. The other end of the pulling rope 331 is fixedly connected to the end of the connecting rod 32 extending out of the slide groove 311.

[0040] In the above embodiment, two pulling ropes 331 are respectively fixedly connected to the two ends of the grip bar 2, and the two pulling ropes 331 have the same length to ensure that they will not interfere with the training of the trainee, while also achieving the levelness of the grip bar 2 and a more balanced traction force applied to the connecting rod 32.

[0041] Further, refer to Figure 4 , Figure 6 and Fig. 9 The outer side of the box body 31 located at the push rod 5 is provided with a cavity 312, and a liquid storage tank 3121 is vertically provided on one side of the cavity 312 close to the rotating wheel 351. An energy-consuming component 9 is arranged in the cavity 312, and the energy-consuming component 9 includes: a stirring blade 91, a viscous liquid 94, and a push plate 95. The stirring blade 91 is placed in the liquid storage tank 3121, and the stirring blade 91 is rotatably connected to the inner wall of the box body 31 through a horizontally fixed rotating shaft 92. The end of the rotating shaft 92 away from the push rod 5 is sleeved and fixedly connected with a second gear 93, and the lower part of the connecting rod 32 is meshed with the second gear 93 through a rack. The viscous liquid 94 is filled in the liquid storage tank 3121, and the liquid level is close to the bottom of the stirring blade 91. The push plate 95 is sealed and It is movably connected to one side of the liquid storage tank 3121 away from the end of the rotating shaft 92, and the push plate 95 is connected through a push plate driving member. When the wire rope retracts quickly, the push plate driving member drives the push plate 95 to squeeze the viscous liquid 94 to raise the liquid level and at least submerge the lower part of the stirring blade 91. The push plate driving member includes a push rod 10 and a compression spring 11. One end of the push rod 10 is fixedly connected to the end of one side of the push plate 95 away from the rotating shaft 92, and the other end passes through the inner wall of the box body 31 and abuts against the adjacent abutment 5. Specifically, the compression spring 11 is placed in the cavity of the box body 31, one end is fixedly connected to the box body 31, and the other end is fixedly connected to the push rod 10. It mainly plays the effect of resetting the push rod 10, and its elastic deformation capacity is much smaller than the clamping force of the abutment 5.

[0042] In the above embodiments, the energy dissipation component 9 is set up to further improve the safety on the basis of the protection component 3. Specifically, when the connecting rod 32 slides along the slide groove 311 at a normal speed, its rack will mesh with the second gear 93 and drive the rotating shaft 92 to rotate. At this time, the stirring blade 91 will also be in an idling state and will not affect the training of the trainee. When an accident occurs, the connecting rod 32 slides along the slide groove 311 at a fast speed, and the stirring blade 91 rotates at a high speed. At this time, the end of the push rod 5 on the side of the rotating wheel 351 in the protection component 3 will deflect toward the side of the liquid storage tank 3121. At this time, the push rod 5 will drive the push rod 10 to slide along the box body 31 to drive the push plate 95 to squeeze the viscous liquid 94. The viscous liquid 94 has limited space, and the liquid level will rise in the limited space and at least bury the lower half of the stirring blade 91. The high-speed rotation of the stirring blade 91 will also slow down the rotation speed under the liquid resistance of the viscous liquid 94, thereby slowing down the high-speed sliding connecting rod 32, thereby further improving safety.

[0043] Furthermore, in order to increase the liquid level of the viscous liquid 94 after being pushed, the bottom of the liquid storage tank 3121 near the bottom of the rotating shaft 92 is relatively protruding, which can reduce the occupied space and block the continuous advancement of the push plate 95 to avoid the collision between the push plate 95 and the end of the rotating shaft 92. Of course, when the push rod 5 is in the extreme deflection position, there is still a gap between the push plate 95 and the end of the rotating shaft 92.

[0044] Further, refer to Figure 5 The cross shear frame 341 is connected to extrusion wheels at the hinge points on both sides, and a rubber layer is provided on the outer surface of the extrusion wheel to reduce vibration and improve stability.

[0045] Further, refer to Figure 1 , Figure 2 and Figure 8 Both sides of the upper part of the box body 31 are vertically provided with movable grooves 313, the movable grooves 313 are connected with the slide grooves 311, and the connecting rod 32 is connected with the pedals 12 at the two movable grooves 313 corresponding to each other, and the pedals 12 are reset by the reset spring 13.

[0046] In the above embodiments, by providing the foot pedal 12, it is also possible to achieve the effect of using the supporting force of the trainee's legs to assist in slowing down the instantaneous retraction speed of the wire rope on the basis of the protection component 3 and the energy-absorbing component 9 in the event of an accident, while also having the additional effect of exercising the leg muscles. The reset spring 13 provided therein can automatically reset the foot pedal 12 and the connecting rod 32 to the side close to the counterweight when the trainee pulls down the wire rope.

[0047] Usage and working principle: When a beginner uses a high-position tensioning machine and configures the number of counterweights corresponding to the weight limit of his / her pull-down, it is difficult to exert a counter-pulling force to counteract the heavier counterweights. The connecting piece 33 connected to both ends of the grip bar 2 will drive the connecting rod 32 to move quickly along the slide groove 311 toward the side close to the seat. As the connecting rod 32 moves quickly, when the connecting rod 32 is pulled by the wire rope and slides quickly along the slide groove 311, the cross bar 6 will move horizontally in the box body 31 synchronously, and through the two The rack plate 7 drives the two first gears 8 to rotate at high speed. The high-speed rotating gears will be driven to rotate at high speed through the axle of the rotating wheel 351. At the same time, the shear frame 341 connected to the connecting rod 32 will also shrink in a shear-like manner toward the side close to the seat. During the shrinkage process, the hinge points on both sides of the shear frame 341 will continue to extend toward both sides and gradually approach the damping plate 342. At this time, the higher the speed of the rotating wheel 351, the longer the counterweight body 3522 extends, and continuously contacts and collides with the push rod 5, so that the push rod 5 moves along the hinge. The shaft rotates and squeezes the damping plate 342, thereby driving the two damping plates 342 to move towards each other. At this time, multiple hinge points of the cross-shear frame 341 will contact the damping plate 342, and the damping plate 342 provides a reaction impedance force to the cross-shear frame 341, so that the high kinetic energy transmitted to the cross-shear frame 341 is gradually consumed in the process of sliding and squeezing along the damping plate 342, thereby slowing down the speed of the wire rope moving up. At the same time, the connecting rod 32 slides quickly along the slide groove 311, and the stirring blade 91 moves at a high speed. Rotate, at this time, the end of the push rod 5 on the side close to the rotating wheel 351 in the protective component 3 will deflect toward the side of the liquid storage tank 3121, and the push rod 5 will drive the push rod 10 to slide along the box body 31 to drive the push plate 95 to squeeze the viscous liquid 94. The space of the viscous liquid 94 is limited, and the liquid level will rise in the limited space and at least bury the lower half of the stirring blade 91. The high-speed rotation of the stirring blade 91 will also slow down the rotation speed under the liquid resistance of the viscous liquid 94, thereby slowing down the high-speed sliding connecting rod 32.

[0048] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A muscle training device with protective function, comprising a horizontal grip bar (2) fixedly connected to the end of a steel wire rope, characterized in that: It also includes a protection component (3) for slowing down the instantaneous retraction speed of the steel wire rope, and the protection component (3) includes: The box body (31) is fixedly connected to the supporting base frame (1), and a sliding groove (311) is provided through the side wall of the box body (31) along its width direction. A connecting rod (32) is slidably connected in the sliding groove (311) along its length direction. The two ends of the connecting rod (32) extending out of the sliding groove (311) are respectively connected to the two ends of the gripping rod (2) through two connecting pieces (33). The vertical displacement of the gripping rod (2) drives the connecting rod (32) to slide horizontally. An energy dissipation part (34) is placed in the box (31) and below the slide groove (311), the energy dissipation part (34) comprises a shear frame (341) and soft damping plates (342) distributed on both sides of the shear frame (341), one end of the shear frame (341) is hinged to the connecting rod (32) and the other end is hinged to the box (31), and the two damping plates (342) can slide in opposite directions; The driving part (35) comprises two rotating wheels (351) rotatably connected to the box body (31), a rotating wheel driving member, and a plurality of groups of elastic swing members (352) hinged on the peripheral side of the rotating wheel (351), wherein the rotating wheel (351) is close to the two damping plates (342), and the rotating wheel driving member is connected to the connecting rod (32) and the two rotating wheels (351). When the steel wire rope is instantly retracted, the rotating wheel driving member drives the rotating wheel (351) to rotate at a high speed and drives the elastic swing member (352) to swing centrifugally to squeeze the corresponding damping plate (342) to slide toward the side of the retracted shear frame (341).

2. A muscle training device with protective function as claimed in claim 1, characterized in that: Both ends of the two damping plates (342) are connected to limit springs (4). When the limit springs (4) are in an initial state of not being extended or retracted, a gap is left between the damping plates (342) and the uncontracted shear frame (341). The two damping plates (342) are both abutted against a push rod (5) on the side away from each other. The middle part of the push rod (5) is hinged to the box body (31) through a vertically arranged hinge shaft. One end of the push rod (5) is in contact with the damping plate (342), and the other end extends toward a side corresponding to the rotating wheel (351) and a gap is left between the rotating wheel (351). The high-speed rotation of the rotating wheel (351) causes the deflected elastic pendulum (352) to collide with the push rod (5) and causes it to rotate around the hinge shaft and then squeeze the damping plate (342).

3. A muscle training device with protective function as claimed in claim 2, characterized in that: One end of the cross-shear frame (341) is connected to the connecting rod (32) via a cross bar (6), the cross bar (6) is transversely fixed to the lower part of the connecting rod, the center line of the cross bar (6) is perpendicular to the center line of the connecting rod, the cross-shear frame (341) is hinged to the end of the cross bar (6), and the rotary wheel driving member includes: Two rack plates (7) are respectively fixedly connected to two sides of the cross bar (6), and the two rotating wheels (351) are located below the two sides of the cross bar (6); The two first gears (8) are both sleeved and fixedly connected to the upper parts of the wheel shafts of the two rotating wheels (351), and the first gears (8) are meshed with the adjacent rack plates (7).

4. A muscle training device with protective function as claimed in claim 3, characterized in that: A plurality of placement cavities (3511) are provided on the circumference of the rotating wheel (351), the number of which is the same as that of the elastic swing elements (352). The placement cavities (3511) of the two rotating wheels (351) are symmetrical about the center line of the crossbar (6). The elastic swing elements (352) include: A swing arm (3521), one end of which is hinged to the inner wall of the placement cavity (3511) of the rotating wheel (351); A counterweight body (3522) is fixedly connected to the other end of the swing arm (3521); The tension spring (3523) is fixedly connected to the middle part of the swing arm (3521), and the other end is fixedly connected to the inner wall of the placement cavity (3511). When the tension spring (3523) is in an unstretched initial state, the counterweight body (3522) and the swing arm (3521) are both placed in the placement cavity (3511). When the rotating wheel (351) rotates at a high speed, the counterweight body (3522) extends out of the placement cavity (3511) along with the swing arm (3521) and abuts against the support rod (5).

5. A muscle training device with protective function as claimed in claim 1 or 4, characterized in that: The connecting member (33) comprises a pulling rope (331) and a guide wheel (332), one end of the pulling rope (331) is fixedly connected to the lower end of the gripping rod (2), the guide wheel (332) is rotatably connected to the supporting base frame (1) via a rotating frame, the guide wheel (332) is located at the bottom of the gripping rod (2), the other end of the pulling rope (331) vertically extends into the guide wheel (332) and is wound around and turned to one side of the connecting rod (32), and the other end of the pulling rope (331) is fixedly connected to the end of the connecting rod (32) extending out of the sliding groove (311).

6. A muscle training device with protective function as claimed in claim 1, characterized in that: The box (31) is provided with a cavity (312) at the outer side of the support rod (5), and a liquid storage tank (3121) is vertically provided on one side of the cavity (312) close to the rotating wheel (351). An energy consuming component (9) is arranged in the cavity (312), and the energy consuming component (9) comprises: The stirring blade (91) is placed in the liquid storage tank (3121), and the stirring blade (91) is rotatably connected to the inner wall of the box body (31) through a transversely fixed rotating shaft (92), and a second gear (93) is sleeved and fixedly connected to the end of the rotating shaft (92) away from the stop rod (5), and the lower part of the connecting rod (32) is meshed with the second gear (93) through a rack; The viscous liquid (94) fills the liquid storage tank (3121), and the liquid level is at the bottom of the stirring blade (91); The push plate (95) is sealed and movably connected to one side of the liquid storage tank (3121) away from the end of the rotating shaft (92). The push plate (95) is connected through a push plate driving member. When the wire rope is quickly retracted, the push plate driving member drives the push plate (95) to squeeze the viscous liquid (94) to raise the liquid level and at least submerge the lower part of the stirring blade (91).

7. A muscle training device with protective function as claimed in claim 6, characterized in that: The push plate driving member comprises a push rod (10) and a compression spring (11), one end of the push rod (10) is fixedly connected to the end of one side of the push plate (95) away from the rotating shaft (92), and the other end passes through the inner wall of the box body (31) and abuts against the adjacent abutment rod (5).

8. The muscle training device with protective function as claimed in claim 1, characterized in that: The shearing frame (341) is connected to extrusion wheels at hinge points on both sides, and a rubber layer is provided on the outer surface of the extrusion wheel.

9. The muscle training device with protective function as claimed in claim 1, characterized in that: The damping plate (342) comprises a plate body (3421) sliding with the inner wall of the box body (31) and a rubber strip (3422) connected to a side close to the shear frame (341); the rubber strip is arranged obliquely on a side close to the shear frame (341); the thickness of the rubber strip (3422) on a side close to the rotating wheel (351) is smaller than the thickness of the rubber strip on a side away from the rotating wheel (351).

10. The muscle training device with protective function as claimed in claim 1, characterized in that: Both sides of the upper part of the box body (31) are provided with movable grooves (313) in the vertical direction, the movable grooves (313) are connected with the sliding grooves (311), and the connecting rod (32) is connected with foot pedals (12) at the positions corresponding to the two movable grooves (313), and the foot pedals (12) are reset by pulling the reset spring (13).

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