Background
Sports goods refer to the general name of all articles used in the process of sports education, competitive sports and physical exercise, along with the development of society and the improvement of living standard, people are aware of the importance of health and sports more and more, at present, sports fitness equipment is set up in each cell and community basically, a double-arm fitness turntable is one of the most common fitness equipment, the double-arm fitness turntable is reasonably used, the flexibility of the body and the strength of arms are improved, the width and the height of the turntable of the double-arm fitness turntable seen at present cannot be adjusted, no method is provided for people of different ages and different body qualities, and if the moulds are opened again to produce different specifications, the cost of manufacturers is increased; and the sensitivity of many body-building carousel is all very high at present, can not control speed when taking exercise, then can cause certain injury to the health, if have child's play still can have the potential safety hazard.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a body-building turntable synchronous adjusting mechanism with a speed limiting mechanism, which has the advantages that the width and the height of a turntable can be synchronously adjusted and the rotating speed can be controlled, and solves the problems that the width and the height of a common body-building turntable can not be adjusted and the rotating speed can not be controlled.
(II) technical scheme
In order to achieve the purposes that the width and the height of the turntable can be synchronously adjusted and the rotating speed can be controlled, the invention provides the following technical scheme: a body-building turntable synchronous adjusting mechanism with a speed limiting mechanism comprises a shell, wherein a screw rod is movably connected inside the shell, an adjusting handle is fixedly connected to the top of the screw rod, a cross rod is movably connected inside the shell, a driven helical gear is movably connected inside the cross rod, a driven screw rod is fixedly connected to the side surface of the driven helical gear, a rack is arranged inside the shell, a fixed column is movably connected to the outer side of the driven screw rod, one end, away from the driven screw rod, of the fixed column is movably connected with the speed limiting mechanism, a rotating shaft is fixedly connected to the front surface of the speed limiting mechanism, a turntable is fixedly connected to the front surface of the rotating shaft, and a braking piece;
the speed limiting mechanism comprises a device box, wherein a U-shaped groove is formed in the device box, a movable block is movably connected in the U-shaped groove, a return spring is fixedly connected in the U-shaped groove, and a brake block is arranged in the device box.
Preferably, the rack is arranged inside the shell along the vertical direction, the driven helical gears are respectively meshed with the screw rods and the rack, the number of the driven helical gears is two, the two driven helical gears are respectively and fixedly connected to the left end and the right end of the driven helical gears, and the thread directions of the two driven helical gears are opposite; the driven screw rod and the driven helical gear are coaxially arranged.
Preferably, the left side and the right side of the shell are provided with through grooves, the cross rod penetrates through the shell, the left end and the right end are the same in length, and the size of each through groove is matched with the size and the motion trail of the cross rod; the fixing columns are arranged in two numbers and are distributed symmetrically by taking the screw rod as the center, the top of the cross rod is provided with a through groove, the two fixing columns penetrate through the top of the cross rod, the size of the through groove is matched with the size and the motion trail of the two fixing columns, tooth grooves are formed in the bottoms of the two fixing columns, and the tooth grooves are matched and meshed with the driven screw rod.
Preferably, four groups of U-shaped grooves are arranged, each group comprises two U-shaped grooves with the same specification, and the four groups of U-shaped grooves are symmetrical and uniformly distributed by taking the circle center of the device box as the center; the movable blocks are provided with four groups, each group comprises two movable blocks with the same specification, the movable blocks are movably connected inside each group of U-shaped grooves, and the positions of the movable blocks in the initial state are the same; the number of the brake blocks is four, each brake block is uniformly distributed by taking the circle center of the device box as the center and corresponds to each group of U-shaped grooves, and two movable blocks included in the same group of movable blocks are respectively and movably connected with the left end and the right end of the same group of brake blocks; the reset springs are provided with four groups, and two reset springs contained in the same group of reset springs are respectively and fixedly connected with the left end and the right end of the same group of brake blocks.
Preferably, the device box is circular, the circle centers of the device box and the rotating shaft are the same point, and the rotating shaft is fixedly connected with the speed limiting mechanism; the shape of the brake block is matched with that of the brake block.
Preferably, the two speed limiting mechanisms are arranged, have the same internal structure and are symmetrically distributed by taking the screw as the center; the rotating shaft and the rotating disc are respectively provided with two rotating shafts and are symmetrically distributed by taking the screw rod as the center.
(III) advantageous effects
Compared with the prior art, the invention provides a body-building turntable synchronous adjusting mechanism with a speed limiting mechanism, which has the following beneficial effects:
1. this body-building carousel synchronous regulation mechanism who possesses speed-limiting mechanism uses through the cooperation of screw rod, driven helical gear, driven screw, can be according to different crowds 'physical condition, distance and height between two carousels of synchronous regulation can be fit for all kinds of crowds and use, has avoided the producer to produce the body-building carousel of different specifications again and has opened the mould again and make the trouble, when energy-concerving and environment-protective, has reduced producer's cost.
2. This body-building carousel synchronous regulation mechanism who possesses speed-limiting mechanism uses through the cooperation of speed-limiting mechanism and braking piece, plays when child and leads to the carousel rotational speed under the condition of too fast and stall, can the speed of automatic limitation carousel, to carousel speed control at reasonable within range, can not lead to the problem of potential safety hazard or even personnel are injured because of the rotational speed is too fast, protected body-building crowd's self safety to a certain extent.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a body-building turntable synchronous adjusting mechanism with a speed-limiting mechanism comprises a housing 1, a screw rod 2 is movably connected inside the housing 1, an adjusting handle 3 is fixedly connected to the top of the screw rod 2, a cross rod 4 is movably connected inside the housing 1, through grooves are formed in the left side and the right side of the housing 1, the cross rod 4 penetrates through the housing 1, the lengths of the left end and the right end are the same, the size of the through groove is matched with the size and the movement track of the cross rod 4, the cross rod 4 can move up and down in the through groove in the side surface of the housing 1, a driven helical gear 5 is movably connected inside the cross rod 4, a driven screw 6 is fixedly connected to the side surface of the driven helical gear 5, two driven screw 6 are respectively and fixedly connected to the left end and the right end of the driven helical gear 5, the thread directions of the two, the driven screw 6 synchronously rotates in the same direction;
the rack 7 is arranged inside the shell 1, the rack 7 is arranged inside the shell 1 along the vertical direction, the driven helical gears 5 are respectively meshed with the screw rods 2 and the rack 7, when the screw rods 2 rotate, the driven helical gears 5 can rotate up and down due to the meshing with the rack 7, the outer sides of the driven screw rods 6 are movably connected with fixing columns 8, two fixing columns 8 are arranged, the two fixing columns are distributed at symmetrical positions by taking the screw rods 2 as the center, the top of each transverse rod 4 is provided with a through groove, the two fixing columns 8 penetrate through the top of the transverse rod 4, the size of the through groove is matched with the size and the movement track of the two fixing columns 8, the bottoms of the two fixing columns 8 are provided with tooth grooves, the tooth grooves are matched and meshed with the driven screw rods 6, when the driven screw rods 6 rotate, the two fixing columns 8 can move left and right in the through, the front of the speed limiting mechanism 9 is fixedly connected with a rotating shaft 10, the front of the rotating shaft 10 is fixedly connected with a turntable 12, the rotating shaft 10 and the turntable 12 are respectively provided with two, the two rotating shafts and the two turntable 12 are distributed in a symmetrical position by taking the screw rod 2 as a center, and a brake piece 11 is arranged inside the fixed column 8;
the speed limiting mechanism 9 comprises a device box 91, the two speed limiting mechanisms 9 are arranged, the internal structures of the two speed limiting mechanisms are the same, the two speed limiting mechanisms are distributed in a symmetrical position by taking the screw rod 2 as the center, the device box 91 is circular, the circle centers of the device box 91 and the rotating shaft 10 are the same, the rotating shaft 10 is fixedly connected with the speed limiting mechanism 9, the device box 91 is internally provided with U-shaped grooves 92, the U-shaped grooves 92 are provided with four groups, each group comprises two U-shaped grooves 92 with the same specification, the four groups of U-shaped grooves 92 are symmetrical and uniformly distributed by taking the circle center of the device box 91 as the center, movable blocks 93 are movably linked inside the U-shaped grooves 92, the movable blocks 93 are provided with four groups, each group comprises two movable blocks 93 with the same specification;
the return springs 94 are fixedly connected to the inner portions of the U-shaped grooves 92, four sets of the return springs 94 are arranged, two return springs 94 contained in the same set of the return springs 94 are fixedly connected with the left end and the right end of the same set of the brake blocks 95 respectively, the brake blocks 95 are arranged inside the device box 91, the brake blocks 95 are four, each brake block 95 is uniformly distributed by taking the circle center of the device box 91 as the center and corresponds to each set of the U-shaped grooves 92, the two movable blocks 93 contained in the same set of the movable blocks 93 are movably connected with the left end and the right end of the same set of the brake blocks 95 respectively, and the brake blocks 95 are matched with the brake blocks.
The working principle is that when the distance and the height between two turnplates 12 need to be reduced, the adjusting handle 3 is rotated clockwise, the screw rod 2 starts to rotate clockwise because the adjusting handle 3 is fixedly connected with the screw rod 2, the driven helical gear 5 and the rack 7 are arranged inside the shell 1, and the driven helical gear 5 is respectively meshed with the screw rod 2 and the rack 7, so when the screw rod 2 rotates, the driven helical gear 5 starts to rotate, because the rack 7 is fixedly connected inside the shell 1, the driven helical gear 5 starts to rotate downwards because of the meshing effect, because the driven helical gears 6 are provided with two helical gears which are respectively fixedly connected at the left end and the right end of the driven helical gear 5, the driven helical gear 6 and the driven helical gear 5 are coaxially arranged, at the moment, the driven helical gears 6 synchronously rotate in the same direction, because the driven helical gears 5 and the driven helical gears 6 are arranged inside the cross bar 4, the cross rod 4 penetrates through the shell 1, the lengths of the left end and the right end are the same, and the size of the through groove is matched with the size and the movement track of the cross rod 4, so that the whole cross rod 4 starts to move downwards at the moment, and the height of the two turntables 12 above the ground is reduced;
meanwhile, two fixing columns 8 are arranged and distributed symmetrically by taking the screw rod 2 as a center, a through groove is formed in the top of the cross rod 4, the two fixing columns 8 penetrate through the top of the cross rod 4, the size of the through groove is matched with the size and the movement track of the two fixing columns 8, tooth grooves are formed in the bottoms of the two fixing columns 8 and are matched and meshed with the driven screw rod 6, so that the two fixing columns 8 can move oppositely when the driven screw rod 6 rotates, a speed limiting mechanism 9 is movably connected to one end, far away from the driven screw rod 6, of each fixing column 8, a rotating shaft 10 is fixedly connected to the front face of each speed limiting mechanism 9, a rotating disc 12 is fixedly connected to the front face of each rotating shaft 10, the rotating shafts 10 and the rotating discs 12 are respectively provided with two numbers and distributed symmetrically by taking the screw rod 2 as a center, so that;
if the distance and the height between the two turntables 12 are required to be increased, the adjusting handle 3 is rotated anticlockwise in the same way;
please refer to fig. 2 and 3 for the above process;
when a child carelessly plays to cause sudden increase or stall of the speed of the rotary table 12, the device box 91 is circular, the circle centers of the device box 91 and the rotary shaft 10 are the same point, the rotary shaft 10 is fixedly connected with the speed limiting mechanism 9, the rotary shaft 10 is fixedly connected with the rotary table 12, when the rotary speed of the rotary table 12 is increased, the rotary speed of the speed limiting mechanism 9 connected with the rotary shaft 10 is also synchronously increased, two speed limiting mechanisms 9 are arranged, the internal structures of the speed limiting mechanisms are the same, the two speed limiting mechanisms are distributed in a symmetrical position by taking the screw rod 2 as the center, U-shaped grooves 92 are arranged in the speed limiting mechanism 9, four groups of U-shaped grooves 92 are arranged, each group comprises two U-shaped grooves 92 with the same specification, and the four groups of U-shaped grooves;
four groups of movable blocks 93 are arranged, each group comprises two movable blocks 93 with the same specification, the movable blocks are movably connected inside each group of U-shaped grooves 92, and the positions of the movable blocks in the initial state are the same; four brake pads 95 are arranged, each brake pad 95 is uniformly distributed by taking the circle center of the device box 91 as the center and corresponds to each group of U-shaped grooves 92, two movable blocks 93 of the same group of movable blocks 93 are respectively movably connected with the left end and the right end of the same group of brake pads 95, the shape of each brake pad 95 is matched with that of each brake pad 11, four groups of return springs 94 are arranged, and two return springs 94 of the same group of return springs 94 are respectively fixedly connected with the left end and the right end of the same group of brake pads 95;
due to the connection relationship of the structures in the speed limiting mechanism 9, when the rotating speed of the speed limiting mechanism 9 is suddenly increased, the corresponding centrifugal force is also increased, at this time, the brake block 95 arranged in the U-shaped groove 92 moves upwards along the track of the U-shaped groove 92 until contacting with the brake block 11, at this time, the friction force between the brake block 95 and the brake block 11 is increased, because the brake block 11 is fixedly arranged in the fixed column 8, at this time, the rotating speed of the speed limiting mechanism 9 is reduced, at the same time, the rotating speed of the rotary disc 12 connected with the rotary disc through the rotary shaft 10 is synchronously reduced, and the brake block 95 returns to the initial position again due to the elasticity of the return.
Please refer to fig. 4 and 5 for the above process.
In conclusion, the synchronous adjusting mechanism of the body-building turntable with the speed limiting mechanism can synchronously adjust the distance and the height between the two turntables 12 according to the body conditions of different people by matching the screw rod 2, the driven bevel gear 5 and the driven screw rod 6, is suitable for various people, avoids the trouble of re-producing body-building turntables with different specifications and re-opening the mold by manufacturers, and reduces the cost of the manufacturers; through the cooperation use of speed-limiting mechanism 9 and braking piece 11, play and lead to the carousel 12 rotational speed under the condition of too fast and stall as child, can the speed of automatic limitation carousel 12, to carousel 12 speed control at reasonable within range, can not lead to the problem that the potential safety hazard is injured even personnel because of the rotational speed is too fast, protected body-building masses' self safety to a certain extent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.