CN113440808A

CN113440808A - Arm strength lifting training device for physical education teaching

Info

Publication number: CN113440808A
Application number: CN202110956966.2A
Authority: CN
Inventors: 黄晨磊; 朱震
Original assignee: Wenzhou Polytechnic
Current assignee: Wenzhou Polytechnic
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2021-09-28

Abstract

The utility model provides an arm strength promotes trainer for sports teaching, support body including the shape of falling the U-shaped, the top surface has two sets of fixed pulleys in the support body, there is a stay cord on every group fixed pulley, there is the pull handle on the stay cord, there is resistance device in the support body, resistance device is including moving the case, there is the box body on the moving case, there is the movable plate in the box body, there is fixed box on the moving case, pass a reciprocal lead screw in the reciprocal screw, the lower extreme of reciprocal lead screw has the adjustable ring, there is the motor moving the outer bottom surface of case, the flexible union coupling water tank of second, there is the water pump on the coupling hose. This device is a variable resistance trainer, and this device can adjust the size between the resistance change interval, secondly, can adjust the position, can adjust reciprocal lead screw movement cycle through the output shaft speed of adjusting motor, can avoid resistance device to provide the time overlength of maximum resistance to the user, prevents that the user is injured, and finally, this device is provided with self-locking function, and this device can adjust between variable resistance training and constant resistance training.

Description

Arm strength lifting training device for physical education teaching

Technical Field

The invention belongs to the field of physical training equipment, and particularly relates to an arm strength lifting training device for physical training.

Background

When carrying out the strength of arm training, it trains the strength of arm to carry out the strength of arm through carrying out the heavy object of drawing, carry out the strength of arm training process through current apparatus, the weight of heavy object is stable unchangeable, therefore the resistance that the user received is unchangeable, if the resistance is less, it is relatively poor to temper the effect, be in user's atress limit for a long time if the resistance, it is injured to make the user easily, current resistance-variable training is many to carry out regulation control through the iron chain, for example, the iron chain squats deeply, though can pass through the iron chain, barbell is adjusted the interval size of resistance change and the interval position of resistance change, however, the course of change of resistance is accomplished through user's motion, the variable of user's height just needs the iron chain of different thicknesses to have satisfied the training requirement, the loaded down with trivial details degree of adjustment process has further been increased, occupy a large amount of time, be unfavorable for sports teaching.

Disclosure of Invention

The invention provides an arm strength lifting training device for physical education, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

the utility model provides an arm strength promotes trainer for sports teaching, includes the support body of the shape of falling the U, two sets of fixed pulleys of inner wall top surface fixed mounting of support body are equipped with a stay cord on every group fixed pulley respectively, and the one end of stay cord is provided with the pull handle respectively, is equipped with resistance device, its characterized in that in the support body: the resistance device comprises a movable box, a box body with an opening on the bottom surface is fixedly arranged on the top surface of the movable box, a movable plate which is in sliding fit with the upper part and the lower part is arranged in the box body, the top surface of the movable plate is connected with the top surface of the inner wall of the box body through a first spring, the top surface of the movable plate is fixedly connected with the lower end of a movable rod, the movable rod penetrates through the top surface of the box body and is in sliding fit with the box body, the upper end of the movable rod is fixedly connected with the bottom surface of a connecting plate, the other end of a pull rope is fixedly connected with the connecting plate, fixed boxes are respectively and fixedly arranged on the front side and the rear side of the top surface of the movable box, the outer sides of the fixed boxes are respectively opened, wedge blocks which are in sliding fit with the fixed boxes are respectively arranged in the fixed boxes, the inner sides of the wedge blocks are respectively connected with the inner sides of the inner walls of the corresponding fixed boxes through a second spring, one ends of connecting ropes are respectively and are in sliding fit with the fixed boxes, the connecting ropes penetrate through the lower portion of the box body and are in sliding fit with the box body, the other ends of the connecting ropes are fixedly connected with the bottom surface of the movable plate, the front side and the rear side of the inner wall of the frame body are respectively provided with a vertical wedge-shaped tooth socket, wedge blocks are respectively positioned in the corresponding wedge-shaped tooth sockets and are matched with the wedge blocks, the bottom surface of the inner wall of the movable box is provided with a drain hole, the bottom surface of the movable plate is fixedly connected with a movable pipe, the movable pipe penetrates through the top surface of the movable box and is in sliding fit with the movable box, the movable pipe penetrates through the drain hole and is in clearance fit with the same, the bottom of the periphery of the movable pipe is fixedly provided with a baffle ring, a first telescopic pipe is arranged in the movable pipe, the lower end of the first telescopic pipe is fixedly connected with the lower portion of the inner wall of the movable pipe through a first connecting ring, the upper portion of the first telescopic pipe is fixedly provided with a movable ring, the top surface of the movable ring is connected with the top surface of the water permeable plate through a second tension spring, a reciprocating screw is arranged above the movable ring, a reciprocating screw rod in threaded fit with the reciprocating screw passes through the reciprocating screw, an adjusting ring is fixedly arranged at the lower end of the reciprocating screw rod, a through square through hole is formed in the top surface of the reciprocating screw rod, a first square rod in sliding fit with the reciprocating screw rod is arranged in the square through hole, a through first through hole is formed in the water permeable plate, the first square rod passes through the first through hole, the bottom surface of the movable box is rotatably connected with the movable pipe, the lower part of the inner wall of the movable pipe is fixedly connected with the lower part of the first square rod through a third connecting rod, a motor is fixedly arranged on the bottom surface of the outer wall of the movable box, transmission gears are respectively and fixedly arranged on the output shaft of the motor and the periphery of the movable pipe and are meshed with each other, a vertical strip-shaped through groove is formed in one side of the movable pipe, one side of the movable ring is fixedly connected with one end of the movable rod, a horizontal first plate and a second plate are arranged in the movable box, the other end of the movable rod is positioned between the first plate and the second plate, the back surfaces of the first plate and the second plate are in sliding fit with the inner wall of the movable box, a first screw hole is formed in the first plate, a first outer screwed pipe in threaded fit with the first screw hole is arranged in the first screw hole, second screw holes are respectively formed in the first plate and the second plate, the screw directions of the two second screw holes are opposite, second outer screwed pipes in threaded fit with the second screw holes are respectively arranged in the two second screw holes, the opposite near ends of the two second outer screwed pipes are rotatably connected with the same third connecting ring, square holes are formed in the first outer screwed pipe and the second outer screwed pipe respectively, a second square rod and a third square rod are rotatably arranged in the movable box, the second square rod penetrates through the first outer screwed pipe and is in up-down sliding fit with the first outer screwed pipe, the third square rod penetrates through the two second outer screwed pipes and is in up-down sliding fit with the second outer screwed pipes, the top surface of the first outer screwed pipe is rotatably provided with the second connecting ring, the periphery of the second connecting ring is fixedly connected with the periphery of the reciprocating nut through a first connecting rod, the first connecting rod penetrates through the strip-shaped through groove and is in sliding fit with the upper portion and the lower portion, a vertical screw rod is installed in the moving box in a rotating mode, a screw sleeve in threaded fit with the screw rod is arranged on the screw rod, the periphery of the third connecting ring is fixedly connected with the periphery of the screw sleeve through a second connecting rod, the upper ends of the second square rod and the screw rod penetrate through the moving box, the lower end of the movable pipe is connected with the upper end of a second telescopic pipe through rotating, the lower end of the second telescopic pipe is fixedly connected with the water tank, the lower portion of one side of the water tank is connected with the lower portion of one side of the moving box through a connecting hose, and a water pump is arranged on the connecting hose.

As above, the arm strength lifting training device for physical education is characterized in that the upper ends of the second square rod, the third square rod and the screw rod are fixedly provided with the rotating handle, and the rotating handle is provided with anti-skid grains.

As to the arm strength lifting training device for physical education, one side of the movable box is provided with the transparent window.

The arm strength lifting training device for physical education comprises a motor, a controller and a motor circuit.

The arm strength lifting training device for physical education comprises a controller, a pull handle, a controller circuit, a control button and a water pump.

According to the arm strength lifting training device for physical education, the fixing rings are fixedly mounted at the top of the pull handle, and one end of the pull rope penetrates through the corresponding fixing rings and is knotted.

The invention has the advantages that: the device is a variable resistance training device, a user rotates a third square rod, the third square rod rotates to drive second outer screw pipes to rotate, the two second outer screw pipes rotate to drive a first plate and a second plate to move oppositely or back to back, and further a gap between the first plate and the second plate is adjusted, the user rotates a screw rod, the screw rod rotates to drive the two second outer screw pipes to move up and down through a screw sleeve, a second connecting rod and a third connecting ring, and further the first plate and the second plate are driven to move up and down synchronously, the positions of the first plate and the second plate can be adjusted through the adjustment, the user rotates a second direction rod, the second square rod can drive a first outer screw pipe to rotate and move up and down, further the position of a reciprocating nut can be adjusted through the second connecting ring and the first connecting rod, the user opens a motor and a water pump, the user pulls a pull handle to perform pull-down training, and the pull handle can pass through a pull rope, The connecting plate and the moving rod drive the moving plate to move upwards to compress the first spring, the moving plate simultaneously drives the moving pipe to move upwards to enable the top surface of the baffle ring to be contacted with the bottom surface of the outer wall of the moving box, the water pump sends water in the water tank into the moving box along the connecting hose, when the water surface in the moving box rises and does not pass through the moving ring, the water can return to the water tank along the strip-shaped through groove, the first telescopic pipe, the moving pipe and the second telescopic pipe, meanwhile, the output shaft of the motor rotates to drive the moving pipe to rotate through the transmission gear, the moving pipe rotates to drive the reciprocating screw rod to rotate through the third connecting rod and the first square rod, the reciprocating screw rod cannot rotate due to the fact that a reciprocating screw nut in threaded fit with the reciprocating screw rod cannot rotate, the reciprocating screw rod can reciprocate up and down while rotating, when the reciprocating screw rod moves upwards, the moving ring can be pulled to move upwards through the adjusting ring, and then the moving ring can be pulled to move upwards through the first tension spring, when the movable rod fixedly connected with the movable ring is contacted with the bottom surface of the first plate, the movable ring stops moving upwards, the adjusting ring can be enabled to move upwards to enable the first tension spring to be elongated, otherwise, when the movable ring moves upwards, the movable ring can be driven to move upwards through the water permeable plate and the second tension spring, when the movable rod fixedly connected with the movable ring is contacted with the top surface of the second plate, the movable ring stops moving downwards, the adjusting ring can move downwards to enable the second tension spring to be elongated, the movable ring is located between the first plate and the second plate to move in a reciprocating mode, the height of the water surface in the movable box can be changed, the water quantity in the movable box can be changed, the gravity of the resistance device can be changed, the resistance received by a user can be changed, and meanwhile, the movable plate can move upwards to pull the two wedge-shaped blocks to move inwards to separate from the wedge-shaped tooth grooves through the connecting rope, when a user trains, the user always gives upward pulling force to the movable plate, the first spring can be always in a contracted state by the pulling force and the gravity of the resistance device, when the user loosens the pull handle, the upward pulling force on the movable plate disappears, the movable plate moves downwards under the elastic force of the first spring, the wedge blocks outwards under the elastic force of the second spring and are inserted into the corresponding wedge-shaped tooth grooves, the resistance device stops descending, the movable plate moves downwards and drives the baffle ring to move upwards through the moving pipe, water in the moving box can be discharged from the water discharging holes and returns to the water tank, the user can close the motor and the water pump, if the user needs to descend and reset the resistance device, one hand of the user is in contact with the bottom surface of the connecting plate, the other hand of the user is in contact with the top surface of the outer wall of the moving box, the other hand of the user is lifted up, the other hand of the user is pressed down, compared with the prior device, firstly, the device can adjust the distance between the first plate and the second plate to adjust the size of a resistance change interval, secondly, the positions of the two second outer screw pipes can be adjusted to adjust the position of the resistance change interval, and furthermore, the reciprocating screw rod moving period can be adjusted by adjusting the rotating speed of an output shaft of a motor, because the reciprocating screw rod moving speed is stable, the time for the movable rod to be contacted with the first plate and separated can be adjusted in one reciprocating screw rod moving period by adjusting the position of the first outer screw pipe, the time is the time for the resistance device to implement the maximum resistance to the user, and the overlong time for the resistance device to provide the maximum resistance to the user can be avoided by adjusting the time, prevent that the user is injured, at last, if the user looses the hand suddenly because of the uncomfortable, this device is provided with self-locking function, should can prevent to carry out the locking to resistance device and make it stop the decline, avoids resistance device to break, and when the user adjusted first board and second board and pressed from both sides the movable rod tightly, then the resistance of training person in the training process can not change, consequently, this device can adjust between rheostatic training and constant resistance training.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of a portion of FIG. 1 from direction A; fig. 3 is an enlarged view of part i of fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

The utility model provides an arm strength promotes trainer for sports teaching, as shown in the figure, including the support body 1 of the shape of falling U, two sets of fixed pulleys 2 of inner wall top surface fixed mounting of support body 1, every group fixed pulley 2 is including controlling two fixed pulleys that distribute, and two sets of fixed pulleys distribute around 2, are equipped with a stay cord 3 on every group fixed pulley 2 respectively, and the one end of stay cord 3 is provided with pull handle 4 respectively, is equipped with resistance device, its characterized in that in the support body 1: the resistance device comprises a movable box 5, a box body 6 with an opening at the bottom surface is fixedly arranged on the top surface of the movable box 5, a movable plate 7 which is in sliding fit with the upper part and the lower part is arranged in the box body 6, the top surface of the movable plate 7 is connected with the top surface of the inner wall of the box body 6 through a first spring, the top surface of the movable plate 7 is fixedly connected with the lower end of a movable rod 8, the movable rod 8 penetrates through the top surface of the box body 6 and is in sliding fit with the box body 6, the upper end of the movable rod 8 is fixedly connected with the bottom surface of a connecting plate 41, the other end of a pull rope 3 is fixedly connected with the connecting plate 41, the front side and the rear side of the top surface of the movable box 5 are respectively and fixedly provided with a fixed box 10, the outer side of the fixed box 10 is open, wedge blocks 11 which are in sliding fit with the fixed box 10 are respectively arranged, the wedge faces upwards, the inner sides of the wedge blocks 11 are respectively connected with the inner sides of the inner wall of the corresponding fixed box 10 through second springs, one end of a connecting rope 12 is respectively and fixedly connected with the inner sides of the wedge blocks 11, the connecting rope 12 penetrates through the inner side of the corresponding fixed box 10 and is in sliding fit with the fixed box 10, the connecting rope 12 penetrates through the lower portion of the box body 6 and is in sliding fit with the box body 6, the other end of the connecting rope 12 is fixedly connected with the bottom surface of the movable plate 7, two guide shafts are installed in the box body 6 in a rotating mode, the connecting rope 12 bypasses the corresponding guide shafts respectively, the guide shafts can play a role in guiding, vertical wedge-shaped tooth grooves 9 are formed in the front side and the rear side of the inner wall of the frame body 1 respectively, the wedge-shaped blocks 11 are located in the corresponding wedge-shaped tooth grooves 9 respectively and are matched with the corresponding wedge-shaped tooth grooves, drain holes 13 are formed in the bottom surface of the inner wall of the movable box 5, the bottom surface of the movable plate 7 is fixedly connected with a movable pipe 14, the movable pipe 14 penetrates through the top surface of the movable box 5 and is in sliding fit with the movable box 5, the movable pipe 14 penetrates through the drain holes 13 and is in clearance fit with the periphery of the movable box 14, a retaining ring 15 is fixedly installed at the bottom of the periphery of the movable box 5, and a clearance between the top surface of the retaining ring 15 and the movable box 5 and the bottom surface is smaller than the maximum contraction amount of the first spring and the second spring The maximum contraction quantity of the two springs is that the structure can enable the top surface of the baffle ring 15 to be contacted with the bottom surface of the outer wall of the movable box 5, the baffle ring 15 can block the drain hole 13, the top surface of the baffle ring 15 is fixedly provided with a rubber sealing ring to further prevent water from flowing out of the drain hole 13, the movable pipe 14 is internally provided with a first telescopic pipe 16, the lower end of the first telescopic pipe 16 is fixedly connected with the lower part of the inner wall of the movable pipe 14 through a first connecting ring, the top surface of the first connecting ring is fixedly connected with the lower end of the first telescopic pipe 16, the periphery of the first connecting ring is fixedly connected with the lower part of the inner wall of the movable pipe 14, the upper part of the first telescopic pipe 16 is fixedly provided with a movable ring 17, the top surface of the movable ring 17 is connected with the bottom surface of the movable ring 18 through a first tension spring, the bottom surface of the movable ring 17 is connected with the top surface of a permeable plate 19 through a second tension spring, and a reciprocating screw 20 is arranged above the movable ring 18, a reciprocating screw rod 21 in threaded fit with the reciprocating screw 20 penetrates through the reciprocating screw rod, an adjusting ring 42 is fixedly installed at the lower end of the reciprocating screw rod 21, the inner diameter of a movable ring 18 is smaller than the outer diameter of the adjusting ring 42 and smaller than the inner diameter of a movable ring 17, the adjusting ring 42 is positioned below the movable ring 18, a through square through hole is formed in the top surface of the reciprocating screw rod 21, a first square rod 22 in sliding fit with the square through hole is arranged in the square through hole, a through first through hole is formed in a water permeable plate 19, the first square rod 22 penetrates through the first through hole, the periphery of the first square rod 22 is not contacted with the inner wall of the first through hole, abrasion caused by friction between the first square rod 22 and the first through hole can be prevented, the movable pipe 23 is rotatably connected to the bottom surface of a movable box 5, the lower part of the inner wall of the movable pipe 23 is fixedly connected with the lower part of the first square rod 22 through a third connecting rod, a motor 24 is fixedly installed on the bottom surface of the outer wall of the movable box 5, the output shaft of the motor 24 and the periphery of the movable tube 23 are respectively fixedly provided with a transmission gear, the two transmission gears are meshed, one side of the movable tube 14 is provided with a vertical strip-shaped through groove 25, one side of the movable ring 17 is fixedly connected with one end of a movable rod 26, when the movable rod 26 is not contacted with a first plate 27 or a second plate 28, the first tension spring and the second tension spring are in a stretched state, under the tensile force action of the first tension spring and the second tension spring, the movable ring 18 and the permeable plate 19 clamp the movable ring 17 tightly, the clamping force is larger than the sum of the gravity of the movable plate 26 and the resistance force applied to the movement of the movable ring 17, a horizontal first plate 27 and a horizontal second plate 28 are arranged in the movable box 5, the first plate 27 is positioned above the second plate 28, the front side surface of the first plate 27 is positioned in front of the front side surface of the second plate 28, the other end of the movable rod 26 is positioned between the first plate 27 and the second plate 28, and the rear surfaces of the first plate 27 and the second plate 28 are both in sliding fit with the inner wall of the movable box 5, the first plate 27 is provided with a first screw hole, the first screw hole is internally provided with a first outer screwed pipe 29 in threaded fit with the first screw hole, the first screw hole is positioned between the front side surface of the first plate 27 and the front side surface of the second plate 28, the first plate 27 and the second plate 28 are respectively provided with a second screw hole, the two second screw holes have opposite thread directions and are respectively provided with a second outer screwed pipe 30 in threaded fit with the second screw holes, the two adjacent ends of the second outer screwed pipe 30 are rotatably connected with the same third connecting ring, the first outer screwed pipe 29 and the second outer screwed pipe 30 are internally provided with square holes, the movable box 5 is rotatably provided with a second square rod 31 and a third square rod 32, the second square rod 31 passes through the first outer screwed pipe 29 and is in up-down sliding fit with the first outer screwed pipe 29, the third square rod 32 passes through the two second outer screwed pipes 30 and is in up-down sliding fit with the second outer screwed pipe 30, the top surface of the first outer screwed pipe 29 is rotatably provided with a second connecting ring, the periphery of the second connecting ring is fixedly connected with the periphery of the reciprocating nut 20 through a first connecting rod, the first connecting rod penetrates through the strip-shaped through groove 25 and is in sliding fit with the upper portion and the lower portion, a vertical screw 33 is rotatably installed in the moving box 5, a screw sleeve 34 in threaded fit with the screw 33 is arranged on the screw 33, the periphery of the third connecting ring is fixedly connected with the periphery of the screw sleeve 34 through a second connecting rod, the upper ends of the second square rod 31, the third square rod 32 and the screw 33 penetrate through the moving box 5, the lower end of the movable pipe 23 is connected with the upper end of the second telescopic pipe 35 through rotation, the first telescopic pipe 16 and the second telescopic pipe 35 are both plastic corrugated hoses, the lower end of the second telescopic pipe 35 is fixedly connected with a water tank 36, water is filled in the water tank 36, the lower portion of one side of the water tank 36 is connected with the lower portion of one side of the moving box 5 through a connecting hose 37, and a water pump 38 is arranged on the connecting hose 37. The device is a resistance-variable training device, a user rotates a third square rod 32, the third square rod 32 rotates to drive second outer screw pipes 30 to rotate, two second outer screw pipes 30 rotate to drive a first plate 27 and a second plate 28 to move oppositely or oppositely, so as to adjust a gap between the first plate 27 and the second plate 28, the user rotates a screw 33, the screw 33 rotates to drive the two second outer screw pipes 30 to move up and down through a screw sleeve 34, a second connecting rod and a third connecting ring, so as to drive the first plate 27 and the second plate 28 to move up and down synchronously, the positions of the first plate 27 and the second plate 28 can be adjusted through the adjustment, the user rotates a second direction rod 31, the second square rod 31 can drive a first outer screw pipe 29 to rotate and move up and down, so as to adjust the position of a reciprocating nut 20 through the second connecting ring and the first connecting ring, the user opens a motor 24 and a water pump 38, a user pulls the pull handle 4 to carry out pull-down training, the pull handle 4 can drive the movable plate 7 to move upwards through the pull rope 3, the connecting plate 41 and the movable rod 8, so that the first spring is compressed, the movable plate 7 simultaneously drives the movable pipe 14 to move upwards, so that the top surface of the baffle ring 15 can be contacted with the bottom surface of the outer wall of the movable box 5, the water pump 38 sends water in the water tank 36 into the movable box 5 along the connecting hose 37, when the water surface in the movable box 5 rises and does not pass through the movable ring 17, the water can return to the water tank 36 along the strip-shaped through groove 25, the first telescopic pipe 16, the movable pipe 23 and the second telescopic pipe 35, meanwhile, the output shaft of the motor 24 rotates to drive the movable pipe 23 to rotate through the transmission gear, the movable pipe 23 rotates to drive the reciprocating screw rod 21 to rotate through the third connecting rod and the first square rod 22, and because the reciprocating screw nut 20 in threaded fit with the reciprocating screw rod 21 cannot rotate, the reciprocating screw rod 21 can reciprocate up and down while rotating, when the reciprocating screw 21 moves upwards, the movable ring 18 can be pulled to move upwards through the adjusting ring 42, and then the movable ring 17 can be pulled to move upwards through the first tension spring, after the movable rod 26 fixedly connected with the movable ring 17 contacts with the bottom surface of the first plate 27, the movable ring 17 stops moving upwards, at this time, the adjusting ring 42 can be enabled to move upwards, so that the first tension spring can be lengthened, otherwise, when the movable ring 17 moves upwards, the movable ring 17 can be driven to move upwards through the water permeable plate 19 and the second tension spring, after the movable rod 26 fixedly connected with the movable ring 17 contacts with the top surface of the second plate 28, the movable ring 17 stops moving downwards, at this time, the adjusting ring 42 can move downwards, so that the second tension spring can be lengthened, the movable ring 17 is located between the first plate 27 and the second plate 28 to move in a reciprocating manner, so that the water level in the movable box 5 can be changed, and then can change the water yield in the movable box 5, thus change the gravity of the resistance device, make the resistance that the user receives change, meanwhile, the moving plate 7 moves upwards and can be through connecting the rope 12 and pulling two wedge blocks 11 to move to the inside and break away from the wedge-shaped tooth space 9, the user can give the moving plate 7 the upward pulling force all the time during training, the pulling force and gravity of the resistance device can make the first spring in the state of contracting all the time, when the user loosens the pull handle 4, the upward pulling force that the moving plate 7 receives disappears, under the elastic force of the first spring, the moving plate 7 moves downwards, and the wedge block 11 is outside and inserted into the corresponding wedge-shaped tooth space 9 under the elastic force of the second spring, and then make the resistance device stop dropping, the moving plate 7 moves downwards and drives the catch ring 15 to move upwards through the shift pipe 14 at the same time, the water in the moving box 5 can be discharged from the water discharging hole 13 and returned to the water tank 36, the user can turn off the motor 24 and the water pump 38, if the user needs to lower and reset the resistance device, the user contacts with the bottom surface of the connecting plate 41 with one hand and contacts with the top surface of the outer wall of the moving box 5 with the other hand, the user lifts up with the other hand and presses down with the other hand, the wedge block 11 can be separated from the wedge-shaped tooth space 9, the user can move the resistance device up and down, thereby resetting the resistance device, compared with the prior device, firstly, the device can adjust the distance between the first plate 27 and the second plate 28 to adjust the size of the resistance change interval, secondly, adjust the positions of the two second outer screw pipes 30 to adjust the position of the resistance change interval, and also, can adjust the moving period of the reciprocating screw rod 21 by adjusting the rotating speed of the output shaft of the motor 24, because the moving speed of the reciprocating screw rod 21 is stable, through the position of adjusting first outer solenoid 29, can adjust in a reciprocal lead screw 21 movement cycle, movable rod 26 contacts the time of separation with first board 27, this time is the time of resistance device implementation maximum resistance to the user promptly, through the regulation to this time, can avoid resistance device to provide the time overlength of maximum resistance to the user, prevent that the user is injured, finally, if the user loosens the hand suddenly because of the uncomfortable, this device is provided with self-locking function, should can prevent to carry out the locking to resistance device and make it stop to descend, avoid resistance device to break, when the user adjusts first board 27 and second board 28 and presss from both sides movable rod 26 tightly, then the resistance of training person in training process can not change, therefore, this device can adjust between variable resistance training and constant resistance training.

Specifically, as shown in fig. 2, the second square rod 31, the third square rod 32 and the screw 33 of the present embodiment are all fixedly mounted with a rotating handle 39, and the rotating handle 39 is provided with anti-slip threads. The rotating handle 39 can provide force for the user, the user can conveniently rotate the second square rod 31, the third square rod 32 and the screw 33, and the anti-slip lines can increase the friction force between the hand of the user and the rotating handle 39, so that the hand of the user is prevented from slipping.

Specifically, as shown in fig. 2, a transparent window 40 is disposed on one side of the movable box 5 according to the embodiment. The user can view the positions of the first plate 27, the second plate 28 and the first outer coil 29 through the transparent window 40 to facilitate the user in adjusting the positions of the first plate 27, the second plate 28 and the first outer coil 29, respectively.

Further, as shown in fig. 1 or 2, the motor 24 described in this embodiment is a servo motor, the motor 24 is electrically connected to a controller, the controller is fixedly mounted on the frame body 1, and connection lines between the motor 24 and the controller, and between the motor and a power supply are soft wires. Compared with other types of motors, the servo motor has more accurate control on the corresponding speed, and a user can adjust the rotating speed of the output shaft of the motor 24 through the controller, so that the use is more convenient.

Furthermore, as shown in fig. 1, the controller circuit described in this embodiment is connected to a control button, the control button is fixedly mounted on the handle 4, the controller circuit is connected to the water pump 38, and the controller 38 controls the power supply of the power supply, so as to control the switching of the motor 24 and the water pump 38. When the user pulls pull handle 4, can press control button, and then controller control motor 24 and water pump 38 open, when the user loosens pull handle 4, control button resets, and then the controller is closed motor 24 and water pump 38, convenient to use.

Furthermore, as shown in fig. 1, a fixing ring is fixedly installed on the top of the pull handle 4 in the embodiment, and one end of the pull rope 3 respectively passes through the corresponding fixing ring and is knotted. Through this connected mode, the user can adjust the length of stay cord 3, and the user of the different heights of being convenient for uses.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an arm strength promotes trainer for sports teaching, includes support body (1) of the shape of falling U, two sets of fixed pulleys (2) of inner wall top surface fixed mounting of support body (1), is equipped with a stay cord (3) on every group fixed pulley (2) respectively, and the one end of stay cord (3) is provided with pull handle (4) respectively, is equipped with resistance device, its characterized in that in support body (1): the resistance device comprises a movable box (5), a box body (6) with an opening at the bottom surface is fixedly arranged on the top surface of the movable box (5), a movable plate (7) which is in sliding fit with the upper part and the lower part is arranged in the box body (6), the top surface of the movable plate (7) is connected with the top surface of the inner wall of the box body (6) through a first spring, the top surface of the movable plate (7) is fixedly connected with the lower end of a movable rod (8), the movable rod (8) penetrates through the top surface of the box body (6) and is in sliding fit with the box body (6), the upper end of the movable rod (8) is fixedly connected with the bottom surface of a connecting plate (41), the other end of a pull rope (3) is fixedly connected with the connecting plate (41), the front side and the rear side of the top surface of the movable box (5) are respectively and fixedly provided with a fixed box (10), the outer side of the fixed box (10) is opened, wedge blocks (11) which are in sliding fit with the fixed box (10) are respectively, the inner sides of the wedge blocks (11) are respectively connected with the inner walls of the corresponding fixed box (10) through a second spring, the inner sides of the wedge blocks (11) are respectively and fixedly connected with one end of a connecting rope (12), the connecting ropes (12) respectively penetrate through the inner sides of the corresponding fixed boxes (10) and are in sliding fit with the fixed boxes (10), the connecting ropes (12) respectively penetrate through the lower parts of the box bodies (6) and are in sliding fit with the box bodies (6), the other ends of the connecting ropes (12) are respectively and fixedly connected with the bottom surface of the movable plate (7), the front side and the rear side of the inner wall of the frame body (1) are respectively provided with vertical wedge-shaped tooth sockets (9), the wedge blocks (11) are respectively positioned in the corresponding wedge-shaped tooth sockets (9) and are in sliding fit with the same, the bottom surface of the inner wall of the movable box (5) is provided with a drain hole (13), the bottom surface of the movable plate (7) is fixedly connected with a movable pipe (14), the movable pipe (14) penetrates through the top surface of the movable box (5) and is in sliding fit with the movable box (5), the movable pipe (14) penetrates through the drain hole (13) and is in clearance fit with the same, a baffle ring (15) is fixedly installed at the bottom of the periphery of a moving pipe (14), a first telescopic pipe (16) is arranged in the moving pipe (14), the lower end of the first telescopic pipe (16) is fixedly connected with the lower part of the inner wall of the moving pipe (14) through a first connecting ring, a moving ring (17) is fixedly installed at the upper part of the first telescopic pipe (16), the top surface of the moving ring (17) is connected with the bottom surface of a movable ring (18) through a first tension spring, the bottom surface of the moving ring (17) is connected with the top surface of a water permeable plate (19) through a second tension spring, a reciprocating screw nut (20) is arranged above the movable ring (18), a reciprocating screw rod (21) in threaded fit with the reciprocating screw nut (20) passes through the reciprocating screw nut, an adjusting ring (42) is fixedly installed at the lower end of the reciprocating screw rod (21), a through square through hole is formed in the top surface of the reciprocating screw rod (21) and a first square rod (22) in sliding fit with the square through hole is arranged in the square through hole, a permeable first through hole is formed in the permeable plate (19), a first square rod (22) penetrates through the first through hole, the bottom surface of the movable box (5) is rotatably connected with the movable pipe (23), the lower part of the inner wall of the movable pipe (23) is fixedly connected with the lower part of the first square rod (22) through a third connecting rod, a motor (24) is fixedly mounted on the bottom surface of the outer wall of the movable box (5), transmission gears are respectively and fixedly mounted on the output shaft of the motor (24) and the periphery of the movable pipe (23), the two transmission gears are meshed, a vertical strip-shaped through groove (25) is formed in one side of the movable pipe (14), one end of one side of a movable ring (17) is fixedly connected with one end of a movable rod (26), a first horizontal plate (27) and a second plate (28) are arranged in the movable box (5), the other end of the movable rod (26) is positioned between the first plate (27) and the second plate (28), the back surfaces of the first plate (27) and the second plate (28) are in sliding fit with the inner wall of the movable box (5), the first plate (27) is provided with a first screw hole, a first outer screwed pipe (29) in threaded fit with the first screw hole is arranged in the first screw hole, the first plate (27) and the second plate (28) are respectively provided with a second screw hole, the two second screw holes are opposite in thread direction and are respectively provided with a second outer screwed pipe (30) in threaded fit with the second screw holes, the two near ends of the second outer screwed pipe (30) are rotatably connected with the same third connecting ring, the first outer screwed pipe (29) and the second outer screwed pipe (30) are internally provided with square holes, a second square rod (31) and a third square rod (32) are rotatably arranged in the movable box (5), the second square rod (31) penetrates through the first outer screwed pipe (29) and is in up-down sliding fit with the first outer screwed pipe (29), the third square rod (32) penetrates through the two second outer screwed pipes (30) and is in up-down sliding fit with the second outer screwed pipe (30), the top surface of the first outer screwed pipe (29) is rotatably provided with a second connecting ring, the periphery of the second connecting ring is fixedly connected with the periphery of the reciprocating nut (20) through a first connecting rod, the first connecting rod penetrates through the strip-shaped through groove (25) and is in sliding fit with the upper portion and the lower portion, a vertical screw rod (33) is rotatably mounted in the movable box (5), a threaded sleeve (34) in threaded fit with the screw rod (33) is arranged on the screw rod (33), the periphery of the third connecting ring is fixedly connected with the periphery of the threaded sleeve (34) through the second connecting rod, the upper ends of the second square rod (31), the third square rod (32) and the screw rod (33) penetrate through the movable box (5), the lower end of the movable pipe (23) is rotatably connected with the upper end of the second telescopic pipe (35), the lower end of the second telescopic pipe (35) is fixedly connected with a water tank (36), the lower portion of one side of the water tank (36) is connected with the lower portion of one side of the movable box (5) through a connecting hose (37), and a water pump (38) is arranged on the connecting hose (37).

2. An arm force lift training device for sports teaching according to claim 1, characterized in that: the upper ends of the second square rod (31), the third square rod (32) and the screw (33) are fixedly provided with rotating handles (39), and the rotating handles (39) are provided with anti-skid grains.

3. An arm force lift training device for sports teaching according to claim 1, characterized in that: one side of the movable box (5) is provided with a transparent window (40).

4. An arm force lift training device for sports teaching according to claim 1, characterized in that: the motor (24) is a servo motor, and the circuit of the motor (24) is connected with the controller.

5. An arm force lift training device for sports teaching according to claim 4, wherein: the controller circuit is connected with the control button, the control button is fixedly arranged on the pull handle (4), and the controller circuit is connected with the water pump (38).

6. An arm force lift training device for sports teaching according to claim 1, characterized in that: the top of the pull handle (4) is fixedly provided with a fixing ring, and one end of the pull rope (3) respectively penetrates through the corresponding fixing ring and is knotted.