CN109107098B - Sit-up body-building device - Google Patents

Sit-up body-building device Download PDF

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Publication number
CN109107098B
CN109107098B CN201811227190.5A CN201811227190A CN109107098B CN 109107098 B CN109107098 B CN 109107098B CN 201811227190 A CN201811227190 A CN 201811227190A CN 109107098 B CN109107098 B CN 109107098B
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China
Prior art keywords
mounting
fixed
rope
shell
handle
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CN201811227190.5A
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CN109107098A (en
Inventor
王卓琳
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Individual
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Individual
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B23/02Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles)
    • A63B23/0205Abdomen
    • A63B23/0211Abdomen moving torso with immobilized lower limbs
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/12Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
    • A63B23/1209Involving a bending of elbow and shoulder joints simultaneously
    • A63B23/1218Chinning, pull-up, i.e. concentric movement

Abstract

The invention discloses a sit-up body-building device, which comprises a base, a shank fixing rod adjusting frame, a shank fixing rod, a backboard mounting frame and a backboard, wherein a guide rail is fixed on the base below the backboard, the bottom end of the backboard is hinged with a backboard diagonal bracing, the other end of the backboard diagonal bracing is hinged on a moving rack, a baffle is fixed at one end, far away from the backboard mounting frame, of the moving rack, a chute is formed in the moving rack, and the guide rail is inserted in the chute; speed adjusting boxes are arranged at two ends of the moving rack and fixed at the top end of the base; the two ends of the backboard are fixed with handle fixing frames, pull rope handles are hung on the handle fixing frames, pull ropes are fixed on the pull rope handles, and the other ends of the pull ropes are connected with the speed regulating box after being guided by guide wheels. The invention has the beneficial effects that sit-ups and pull force body building can be performed simultaneously, and the exercise effect is good.

Description

Sit-up body-building device
Technical Field
The invention relates to the technical field of fitness equipment, in particular to a sit-up fitness equipment.
Background
Along with the improvement of the living standard of people, body building becomes a healthy living habit. The sit-up body-building device is an auxiliary tool for sit-up exercise, can enable a sporter to relax and save effort when doing sit-ups, can correct the posture of the sit-ups, enables the sporter to exercise in a correct posture, achieves the best exercise effect, and provides the best method for shaping a thin waist; however, the existing sit-up body-building device is mainly used for exercising the lumbar muscle groups, reducing the redundant fat of the lumbar and abdomen, has single function, cannot be used for enhancing the arm strength, the latissimus dorsi and the action coordination capability, and has less ideal exercise effect; it is therefore desirable to develop an exercise apparatus that can exercise both the waist and abdomen and the arm strength.
Disclosure of Invention
Aiming at the defects, the invention provides a sit-up body-building device, thereby solving the problem that the traditional sit-up body-building device can not exercise waist and abdomen and arm strength at the same time.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a sit-up body-building device comprises a base, a shank fixing rod adjusting frame, a shank fixing rod, a backboard mounting rack and a backboard, wherein the shank fixing rod adjusting frame is fixed at one end of the base, and a shank fixing rod is arranged on the shank fixing rod adjusting frame; the base is also fixed with a backboard mounting rack, and the top end of the backboard mounting rack is hinged with a backboard; a guide rail is fixed on the base below the backboard, the bottom end of the backboard is hinged with a backboard diagonal brace, the other end of the backboard diagonal brace is hinged on a moving rack, a baffle is fixed at one end of the moving rack, which is far away from the backboard mounting rack, a sliding groove is formed in the moving rack, and the guide rail is inserted into the sliding groove; speed adjusting boxes are arranged at two ends of the moving rack and fixed at the top end of the base; the two ends of the backboard are fixed with handle fixing frames, pull rope handles are hung on the handle fixing frames, pull ropes are fixed on the pull rope handles, and the other ends of the pull ropes are connected with the speed regulating box after being guided by guide wheels.
The speed regulation box comprises a speed regulation box lower shell, a rope pulley mounting shell, a rope pulley connecting shaft, a coil spring, a rope pulley transmission gear, a rack transmission gear, a push rod I, a push rod II, a speed regulation medium gear I, a speed regulation medium gear II, a speed regulation medium gear III, a handle I, a handle II, a handle III, a mounting shaft I, a mounting shaft II, a mounting shaft III, a rack transmission gear mounting shaft, a pawl I, a rope pulley pawl spring piece, a mounting plate I, a mounting plate II, a ratchet wheel, a pawl extending groove, a rope pulley, a mounting hole and a pawl II; the rope pulley is fixed on the rope pulley connecting shaft in the rope pulley mounting shell, a rope pulley transmission gear is sleeved on the rope pulley connecting shaft in the lower shell of the speed regulating box, a ratchet wheel is fixed on the top end of the rope pulley transmission gear, a pawl extending groove is formed in an inner ring of the ratchet wheel, a pawl I is arranged in the pawl extending groove and hinged to the lower end of the rope pulley, and a rope pulley pawl spring piece is connected between the pawl I and the rope pulley; the first mounting plate and the second mounting plate are fixed on the inner side wall of the lower speed box shell, mounting holes are formed in the first mounting plate, the second mounting plate, the top wall of the lower speed box shell and the bottom wall of the lower speed box shell, a first mounting shaft is arranged between the top wall of the lower speed box shell and the first mounting plate, two ends of the first mounting shaft are arranged in the mounting holes, a first speed regulating medium gear is fixed on the first mounting shaft, a ring groove is formed in the first speed regulating medium gear, a first handle is sleeved in the ring groove, and the other end of the first handle extends out of the lower speed box shell; a second mounting shaft is arranged between the first mounting plate and the second mounting plate, two ends of the second mounting shaft are arranged in the mounting holes, a second speed regulating medium gear is fixed on the second mounting shaft, a ring groove is formed in the second speed regulating medium gear, a second handle is sleeved in the ring groove, and the other end of the second handle extends out of the lower shell of the speed regulating box; a third mounting shaft is arranged between the second mounting plate and the lower shell of the speed regulating box, two ends of the third mounting shaft are arranged in the mounting holes, a third speed regulating medium gear is fixed on the third mounting shaft, an annular groove is formed in the third speed regulating medium gear, a third handle is sleeved in the annular groove, and the other end of the third handle extends out of the lower shell of the speed regulating box; a rack transmission gear mounting shaft is inserted between the top wall of the lower speed box shell and the bottom wall of the lower speed box shell, and a rack transmission gear is fixed on the rack transmission gear mounting shaft and meshed with the moving rack, the first speed regulation medium gear, the second speed regulation medium gear and the speed regulation medium gear in a three-phase manner; the installation groove is formed in the bottom wall of the rope pulley installation shell, a second pawl is arranged in the installation groove and is in contact with the outer ring of the ratchet wheel, the second pawl is hinged with the bottom wall of the rope pulley installation shell through a hinge shaft, a first push rod and a second push rod are further fixed on the second pawl, the first push rod is inserted into the bottom wall of the rope pulley installation shell and the top wall of the lower shell of the speed regulating box, the other end of the first push rod extends out of the top wall of the lower shell of the speed regulating box, the second push rod is inserted into the bottom wall of the rope pulley installation shell, and the other end of the second push rod extends out of the bottom wall of the rope pulley installation shell.
Further, a handle is fixed to the top end of the shank fixing rod adjusting frame, a shank fixing rod installation groove is formed in the shank fixing rod adjusting frame, a shank fixing rod is arranged in the shank fixing rod installation groove, and the shank fixing rod is fixed to the shank fixing rod adjusting frame through a positioning screw.
Further, one end of the guide rail, which is close to the shank dead lever adjusting frame, is provided with a buffer spring seat, the buffer spring seat is fixed at the top end of the base, a buffer spring is arranged on the buffer spring seat, and the buffer spring is arranged at one end of the buffer spring seat, which is close to the guide rail.
The beneficial effects of the invention are as follows: the device realizes the simultaneous exercise of sit-up and pull force body building, can exercise waist and abdomen and arm strength simultaneously, and has good exercise effect; the device has scientific and reasonable design, simple structure and convenient use, and can adjust the ground clearance of the backboard when the sit-up is independently performed, thereby being applicable to people with different exercise intensity.
Drawings
FIG. 1 is a schematic view of a sit-up exercise machine according to the present invention;
FIG. 2 is a schematic view of a sit-up exercise machine according to the second embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2A;
FIG. 4 is an enlarged view of a portion of FIG. 2B;
FIG. 5 is a schematic view of a sit-up exercise machine according to the third embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5C;
FIG. 7 is an enlarged view of a portion of FIG. 5D;
FIG. 8 is a schematic view of an installation position of a buffer spring seat;
FIG. 9 is an enlarged view of a portion of FIG. 8E;
FIG. 10 is a schematic view of the structure of the speed box of the present invention;
FIG. 11 is a schematic view of the mounting positions of the first and second mounting plates;
FIG. 12 is a schematic view of a part of the structure of the governor case;
FIG. 13 is a schematic diagram of a portion of a second embodiment of a speed gearbox;
FIG. 14 is a relative positional profile of mounting shaft one, mounting shaft two and mounting shaft three;
FIG. 15 is an enlarged view of a portion of FIG. 14F;
FIG. 16 is a schematic view of the installed position of pawl one;
fig. 17 is a schematic bottom view of the sheave;
FIG. 18 is an enlarged view of a portion of FIG. 17H;
FIG. 19 is a schematic view of the ratchet wheel;
FIG. 20 is a schematic view of the installed position of the ratchet;
FIG. 21 is a schematic view of a portion of a third embodiment of a speed box;
in the figure, 1, a base; 2. a shank fixing rod adjusting frame; 3. shank fixing rods; 4. a handle; 5. a shank fixing rod mounting groove; 6. a set screw; 7. a backboard mounting rack; 8. a back plate; 9. a guide wheel; 10. a back plate diagonal bracing; 11. a pull rope handle; 12. a pull rope; 13. a guide rail; 14. a buffer spring seat; 15. a buffer spring; 16. a motion rack; 17. a baffle; 18. a speed regulating box; 19. a handle fixing frame; 20. a chute; 1801. a lower housing of the speed regulating box; 1802. a sheave mounting housing; 1803. a rope pulley connecting shaft; 1804. a coil spring; 1805. a sheave drive gear; 1806. a rack drive gear; 1807. a push rod I; 1808. a second push rod; 1809. a first speed regulating medium gear; 1810. a second speed regulating intermediate gear; 1811. a speed regulating intermediate gear III; 1812. a first handle; 1813. a second handle; 1814. a third handle; 1815. installing a first shaft; 1816. installing a second shaft; 1817. a third mounting shaft; 1818. a rack transmission gear mounting shaft; 1819. a first pawl; 1820. a sheave pawl spring piece; 1821. a first mounting plate; 1822. a second mounting plate; 1823. a ratchet wheel; 1824. the pawl extends into the groove; 1825. a rope pulley; 1826. a mounting hole; 1827. and a second pawl.
Detailed Description
The invention is specifically described below with reference to the accompanying drawings, as shown in fig. 1-21, a sit-up body-building device comprises a base 1, a shank fixing rod adjusting frame 2, a shank fixing rod 3, a backboard mounting frame 7 and a backboard 8, wherein the shank fixing rod adjusting frame 2 is fixed at one end of the base 1, and the shank fixing rod 3 is arranged on the shank fixing rod adjusting frame 2; a backboard mounting rack 7 is also fixed on the base 1, and the top end of the backboard mounting rack 7 is hinged with a backboard 8; a guide rail 13 is fixed on the base 1 below the backboard 8, the bottom end of the backboard 8 is hinged with a backboard diagonal brace 10, the other end of the backboard diagonal brace 10 is hinged on a moving rack 16, a baffle 17 is fixed at one end of the moving rack 16 far away from the backboard mounting rack 7, a chute 20 is formed on the moving rack 16, and the guide rail 13 is inserted into the chute 20; speed adjusting boxes 18 are arranged at two ends of the moving rack 16, and the speed adjusting boxes 18 are fixed at the top end of the base 1; a handle fixing frame 19 is fixed at two ends of the backboard 8, a pull rope handle 11 is hung on the handle fixing frame 19, a pull rope 12 is fixed on the pull rope handle 11, and the other end of the pull rope 12 is connected with a speed regulation box 18 after being guided by a guide wheel 9;
the speed case 18 includes a speed case lower housing 1801, a sheave mounting housing 1802, a sheave connecting shaft 1803, a coil spring 1804, a sheave drive gear 1805, a rack drive gear 1806, a first push rod 1807, a second push rod 1808, a first speed adjusting pinion 1809, a second speed adjusting pinion 1810, a third speed adjusting pinion 1811, a first handle 1812, a second handle 1813, a third handle 1814, a first mounting shaft 1815, a second mounting shaft 1816, a third mounting shaft 1817, a rack drive gear mounting shaft 1818, a first pawl 1819, a sheave pawl spring plate 1820, a first mounting plate 1821, a second mounting plate 1822, a ratchet 1823, a pawl entry slot 1824, a sheave 1825, a mounting hole 1826, and a second pawl 1827; a rope pulley installation shell 1802 is fixed at the top end of a lower gearbox shell 1801, rope pulley connecting shafts 1803 are inserted into the lower gearbox shell 1801 and the rope pulley installation shell 1802, a coil spring 1804 is arranged at the top end of the rope pulley connecting shafts 1803, two ends of the coil spring 1804 are respectively fixed with the rope pulley connecting shafts 1803 and the rope pulley installation shell 1802, a rope pulley 1825 is fixed on the rope pulley 1803 in the rope pulley installation shell 1802, a pull rope 12 is wound and fixed on the rope pulley 1825, a rope pulley transmission gear 1805 is sleeved on the rope pulley connecting shafts 1803 in the lower gearbox shell 1801, a ratchet wheel 1823 is fixed at the top end of the rope pulley transmission gear 1805, a pawl extending groove 1824 is formed in an inner ring of the ratchet wheel 1823, a pawl 1819 is arranged in the pawl extending groove 1824, the pawl 1819 is hinged at the lower end of the rope pulley 1825, and a rope pulley pawl 1820 is connected between the pawl 1819 and the rope pulley 1825; a first mounting plate 1821 and a second mounting plate 1822 are fixed on the inner side wall of the lower gearbox housing 1801, the first mounting plate 1821, the second mounting plate 1822, the top wall of the lower gearbox housing 1801 and the bottom wall of the lower gearbox housing 1801 are provided with mounting holes 1826, a first mounting shaft 1815 is arranged between the top wall of the lower gearbox housing 1801 and the first mounting plate 1821, two ends of the first mounting shaft 1815 are arranged in the mounting holes 1826, a first speed regulating medium gear 1809 is fixed on the first mounting shaft 1815, a ring groove is formed in the first speed regulating medium gear 1809, a first handle 1812 is sleeved in the ring groove, and the other end of the first handle 1812 extends out of the lower gearbox housing 1801; a second installation shaft 1816 is arranged between the first installation plate 1821 and the second installation plate 1822, two ends of the second installation shaft 1816 are arranged in the installation holes 1826, a second speed regulating intermediate gear 1810 is fixed on the second installation shaft 1816, an annular groove is formed in the second speed regulating intermediate gear 1810, a second handle 1813 is sleeved in the annular groove, and the other end of the second handle 1813 extends out of the lower speed regulating box shell 1801; a third installation shaft 1817 is arranged between the second installation plate 1822 and the lower gearbox shell 1801, two ends of the third installation shaft 1817 are arranged in the installation holes 1826, a third speed regulating intermediate gear 1811 is fixed on the third installation shaft 1817, an annular groove is formed in the third speed regulating intermediate gear 1811, a third handle 1814 is sleeved in the annular groove, and the other end of the third handle 1814 extends out of the lower gearbox shell 1801; a rack transmission gear mounting shaft 1818 is inserted between the top wall of the lower gearbox housing 1801 and the bottom wall of the lower gearbox housing 1801, a rack transmission gear 1806 is fixed on the rack transmission gear mounting shaft 1818, and the rack transmission gear 1806 is meshed with the moving rack 16, the first speed regulation intermediate gear 1809, the second speed regulation intermediate gear 1810 and the third speed regulation intermediate gear 1811; the installation groove is formed in the bottom wall of the rope pulley installation shell 1802, a pawl II 1827 is arranged in the installation groove, the pawl II 1827 is in contact with the outer ring of the ratchet wheel 1823, the pawl II 1827 is hinged with the bottom wall of the rope pulley installation shell 1802 through a hinge shaft, a push rod I1807 and a push rod II 1808 are further fixed on the pawl II 1827, the push rod I1807 is inserted into the bottom wall of the rope pulley installation shell 1802 and the top wall of the speed regulation box lower shell 1801, the other end of the push rod I1807 extends out of the top wall of the speed regulation box lower shell 1801, the push rod II 1808 is inserted into the bottom wall of the rope pulley installation shell 1802, and the other end of the push rod II 1808 extends out of the bottom wall of the rope pulley installation shell 1802;
the upper end of the shank fixing rod adjusting frame 2 is fixedly provided with a handle 4, the shank fixing rod adjusting frame 2 is provided with a shank fixing rod mounting groove 5, a shank fixing rod 3 is arranged in the shank fixing rod mounting groove 5, and the shank fixing rod 3 is fixed on the shank fixing rod adjusting frame 2 through a positioning screw 6;
wherein, one end of the guide rail 13, which is close to the shank dead lever adjusting bracket 2, is provided with a buffer spring seat 14, the buffer spring seat 14 is fixed at the top end of the base 1, a buffer spring 15 is arranged on the buffer spring seat 14, and the buffer spring 15 is arranged at one end of the buffer spring seat 14, which is close to the guide rail 13.
In this embodiment, as shown in fig. 1, when a person needs to exercise with the device, first toggle the first handle 1812 or the second handle 1813 or the third handle 1814 to select a gear, in this embodiment toggle the first handle 1812, and select the gear of the first handle 1812; then the pull rope handle 11 is taken off from the handle fixing frame 19; then a user lies on the backboard 8, and pulls the two pull rope handles 11 with two hands respectively, at this time, the pull rope handles 11 pull the rope pulley 1825 through the pull rope 12 to drive the rope pulley 1825 to rotate, the rope pulley 1825 drives the rope pulley connecting shaft 1803 to rotate, and the rope pulley connecting shaft 1803 tightens the coil spring 1804 to enable the coil spring 1804 to store energy; meanwhile, the rotating rope wheel 1825 drives the ratchet wheel 1823 to rotate through the pawl 1819, the ratchet wheel 1823 drives the rope wheel transmission gear 1805 to rotate, the rope wheel transmission gear 1805 drives the rack transmission gear 1806 to rotate through the speed regulating intermediate gear 1809, the rack transmission gear 1806 drives the moving rack 16 to move, the moving rack 16 slides on the guide rail 13, at this time, the moving rack 16 moves in a direction away from the backboard mounting rack 7, the moving rack 16 drives the backboard diagonal brace 10 to move, and the backboard diagonal brace 10 can jack up the backboard 8; at this time, as shown in fig. 14, the ratchet 1823 cannot rotate reversely under the action of the pawl two 1827, and the back plate 8 can only rise and cannot descend; at this time, the rope pulling handle 11 is loosened, the rope pulley 1825 can reversely rotate under the action of the elasticity of the coil spring 1804, the rope pulling 12 is tightened, at this time, the rope pulley 1825 cannot drive the ratchet wheel 1823 to rotate through the pawl 1819, the ratchet wheel 1823 cannot drive the rope pulley transmission gear 1805 to rotate, the rope pulley transmission gear 1805 cannot drive the rack transmission gear 1806 to rotate through the speed regulating intermediate gear 1809, and the rack transmission gear 1806 cannot drive the moving rack 16 to reversely move; at the moment, the two pull rope handles 11 are pulled with two hands respectively, so that the back plate diagonal bracing 10 continuously jacks up the back plate 8; when the back plate diagonal brace 10 moves to contact with the second push rod 1808, the back plate diagonal brace 10 pushes the second push rod 1808, so that the second push rod 1808 pushes the second pawl 1827, the second pawl 1827 is separated from the ratchet wheel 1823, the second pawl 1827 does not prevent the ratchet wheel 1823 from rotating reversely, the back plate 8 can descend, and both hands loosen the pull rope handle 11; at this time, under the action of the self gravity of the user, the back plate 8 can descend to return to the original position, the back plate 8 drives the moving rack 16 to return to the original position through the back plate diagonal brace 10, after the moving rack 16 returns to the original position, the baffle 17 contacts with the push rod one 1807, the baffle 17 pushes the push rod one 1807, the push rod one 1807 pushes the pawl two 1827, and the pawl two 1827 returns to the original position to be contacted with the ratchet wheel 1823 again; at this time, the pull-cord grip 11 can be held again by hand for the next exercise.
The above technical solution only represents the preferred technical solution of the present invention, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present invention, and the technical solution falls within the scope of the present invention.

Claims (1)

1. The sit-up body-building device comprises a base (1), a shank fixing rod adjusting frame (2), a shank fixing rod (3), a backboard mounting frame (7) and a backboard (8), wherein the shank fixing rod adjusting frame (2) is fixed at one end of the base (1), and the shank fixing rod (3) is arranged on the shank fixing rod adjusting frame (2); still be fixed with backplate mounting bracket (7) on base (1), the top of backplate mounting bracket (7) articulates there is backplate (8), its characterized in that: a guide rail (13) is fixed on the base (1) below the backboard (8), the bottom end of the backboard (8) is hinged with a backboard inclined strut (10), the other end of the backboard inclined strut (10) is hinged on a moving rack (16), a baffle (17) is fixed at one end, far away from the backboard mounting rack (7), of the moving rack (16), a sliding groove (20) is formed in the moving rack (16), and the guide rail (13) is inserted into the sliding groove (20); the two ends of the moving rack (16) are provided with speed regulating boxes (18), and the speed regulating boxes (18) are fixed at the top end of the base (1); the two ends of the backboard (8) are fixedly provided with handle fixing frames (19), a pull rope handle (11) is hung on the handle fixing frames (19), a pull rope (12) is fixedly arranged on the pull rope handle (11), and the other end of the pull rope (12) is connected with a speed regulation box (18) after being guided by a guide wheel (9);
the speed regulation box (18) comprises a speed regulation box lower shell (1801), a rope wheel mounting shell (1802), a rope wheel connecting shaft (1803), a coil spring (1804), a rope wheel transmission gear (1805), a rack transmission gear (1806), a push rod I (1807), a push rod II (1808), a speed regulation medium gear I (1809), a speed regulation medium gear II (1810), a speed regulation medium gear III (1811), a handle I (1812), a handle II (1813), a handle III (1814), a mounting shaft I (1815), a mounting shaft II (1816), a mounting shaft III (1817), a rack transmission gear mounting shaft (1818), a pawl I (1819), a rope wheel pawl spring piece (1820), a mounting plate I (1821), a mounting plate II (1822), a ratchet wheel (1823), a pawl extending groove (1824), a rope wheel (1825), a mounting hole (1826) and a pawl II (1827); the rope pulley is characterized in that a rope pulley mounting shell (1802) is fixed at the top end of a lower gearbox shell (1801), rope pulley connecting shafts (1803) are inserted into the lower gearbox shell (1801) and the rope pulley mounting shell (1802), coil springs (1804) are arranged at the top ends of the rope pulley connecting shafts (1803), two ends of the coil springs (1804) are respectively fixed with the rope pulley connecting shafts (1803) and the rope pulley mounting shell (1802), rope pulleys (1825) are fixedly wound on the rope pulleys (1825), rope pulleys (12) are fixedly wound on the rope pulleys (1825), rope pulley transmission gears (1805) are sleeved on the rope pulley connecting shafts (1803) in the lower gearbox shell (1801), ratchet wheels (1823) are fixedly arranged at the top ends of the rope pulley transmission gears (1805), pawl extending grooves (1824) are formed in inner rings of the ratchet wheels (1823), pawl one pawl (1819) is hinged to the lower ends of the rope pulleys (1825), and a pawl (1820) is connected between the pawl one pawl (1819) and the rope pulleys (1825); a first mounting plate (1821) and a second mounting plate (1822) are fixed on the inner side wall of the lower gearbox casing (1801), a first mounting plate (1821), a second mounting plate (1822), the top wall of the lower gearbox casing (1801) and the bottom wall of the lower gearbox casing (1801) are provided with mounting holes (1826), a first mounting shaft (1815) is arranged between the top wall of the lower gearbox casing (1801) and the first mounting plate (1821), two ends of the first mounting shaft (1815) are arranged in the mounting holes (1826), a first speed regulating medium gear (1809) is fixed on the first mounting shaft (1815), a ring groove is formed in the first speed regulating medium gear (1809), a first handle (1812) is sleeved in the ring groove, and the other end of the first handle (1812) extends out of the lower gearbox casing (1801); a second installation shaft (1816) is arranged between the first installation plate (1821) and the second installation plate (1822), two ends of the second installation shaft (1816) are arranged in the installation holes (1826), a second speed regulating medium gear (1810) is fixed on the second installation shaft (1816), an annular groove is formed in the second speed regulating medium gear (1810), a second handle (1813) is sleeved in the annular groove, and the other end of the second handle (1813) extends out of the lower speed regulating box shell (1801); a third mounting shaft (1817) is arranged between the second mounting plate (1822) and the lower gearbox shell (1801), two ends of the third mounting shaft (1817) are arranged in the mounting holes (1826), a third speed regulating medium gear (1811) is fixed on the third mounting shaft (1817), an annular groove is formed in the third speed regulating medium gear (1811), a third handle (1814) is sleeved in the annular groove, and the other end of the third handle (1814) extends out of the lower gearbox shell (1801); a rack transmission gear mounting shaft (1818) is inserted between the top wall of the lower gearbox shell (1801) and the bottom wall of the lower gearbox shell (1801), a rack transmission gear (1806) is fixed on the rack transmission gear mounting shaft (1818), and the rack transmission gear (1806) is meshed with the moving rack (16), a first speed regulation medium gear (1809), a second speed regulation medium gear (1810) and a third speed regulation medium gear (1811); the installation groove is formed in the bottom wall of the rope pulley installation shell (1802), a pawl II (1827) is arranged in the installation groove, the pawl II (1827) is in contact with the outer ring of the ratchet wheel (1823), the pawl II (1827) is hinged with the bottom wall of the rope pulley installation shell (1802) through a hinge shaft, a push rod I (1807) and a push rod II (1808) are further fixed on the pawl II (1827), the push rod I (1807) is inserted into the bottom wall of the rope pulley installation shell (1802) and the top wall of the speed regulation box lower shell (1801), the other end of the push rod I (1807) extends out of the top wall of the speed regulation box lower shell (1801), the push rod II (1808) is inserted into the bottom wall of the rope pulley installation shell (1802), and the other end of the push rod II (1808) extends out of the bottom wall of the rope pulley installation shell (1802);
the upper end of the shank fixing rod adjusting frame (2) is fixedly provided with a handle (4), the shank fixing rod adjusting frame (2) is provided with a shank fixing rod mounting groove (5), a shank fixing rod (3) is arranged in the shank fixing rod mounting groove (5), and the shank fixing rod (3) is fixed on the shank fixing rod adjusting frame (2) through a positioning screw (6);
one end of the guide rail (13) close to the shank dead lever adjusting frame (2) is provided with a buffer spring seat (14), the buffer spring seat (14) is fixed at the top end of the base (1), a buffer spring (15) is installed on the buffer spring seat (14), and the buffer spring (15) is arranged at one end of the buffer spring seat (14) close to the guide rail (13).
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CN109731284B (en) * 2019-01-14 2020-08-14 西安外事学院 Waist device under dance exercise
CN111013115B (en) * 2019-11-27 2021-06-04 垒途智能教科技术研究院江苏有限公司 Teenager movement device and automatic counting method thereof
CN111111100B (en) * 2019-11-27 2021-03-05 垒途智能教科技术研究院江苏有限公司 Teenager exercise method

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CN209005134U (en) * 2018-10-22 2019-06-21 王卓琳 A kind of apparatus for body building with sit-ups

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