CN107930015A - A kind of gradient adjusting mechanism of treadmill - Google Patents
A kind of gradient adjusting mechanism of treadmill Download PDFInfo
- Publication number
- CN107930015A CN107930015A CN201711431341.4A CN201711431341A CN107930015A CN 107930015 A CN107930015 A CN 107930015A CN 201711431341 A CN201711431341 A CN 201711431341A CN 107930015 A CN107930015 A CN 107930015A
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- Prior art keywords
- rod
- push rod
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/02—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable endless bands, e.g. treadmills
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0087—Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/80—Special sensors, transducers or devices therefor
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/09—Adjustable dimensions
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention discloses a kind of gradient adjusting mechanism of treadmill,Include base,In the fixed closed rod of base top,Closed rod one end is fixing end,The other end is free end,The free end can be rotated around fixing end,Swing rod is connected on free end,Closed rod fixed guide rod between fixing end and free end,Guide rod is vertical relative to closed rod,Sliding block is arranged with guide rod,The sliding block can be slided along the guide rod,Described swing rod one end is hinged on the sliding block,The bottom of the other end is provided with pulley,The pulley can slide on the ground,In the also fixed supporting rack of the base top,Lifting motor is provided with support frame as described above,Push rod is connected with the lifting motor,The push rod can move back and forth under the driving of the lifting motor,The sidepiece of the sliding block is connected on the push rod,Control chip is additionally provided with the base,The control chip can go out the displacement of the push rod according to the angle calcu-lation that the swing rod and ground are formed.
Description
Technical field
The present invention relates to treadmill technical field, more particularly to a kind of gradient adjusting mechanism of treadmill.
Background technology
Road-work be medical field highly praise highly aerobic fitness activity, to enhancing limb muscle, improve cardio-pulmonary function and
Weight-reducing has positive effect.Due to being subject to the factors such as weather, place and environment to restrict, the chance of outdoor running is fewer and fewer, more
To carry out running body-building on the treadmill of more people's selections indoors.Treadmill due to floor space it is small, it is easy to operate,
Speed governing is convenient, has become most common indoor body-building equipment.
To improve effect of taking exercise by running, medium-to-high grade treadmill is provided with gradient adjusting mechanism, to adjust treadmill
Angle between chassis and horizontal plane, makes to form certain gradient between treadmill belt and horizontal plane.The value of slope of treadmill belt is direct
It is related to knee joint health and body-building efficiency.Research of the prior art shows：The gradient at 0~2 °, ligamentum patellae tension force increase,
The increase of shin stock platform force；At 2~5 °, the increase of ligamentum patellae tension force, shin stock platform force reduce the gradient；For the gradient at 5~8 °, kneecap is tough
Belt tension reduces, shin stock platform force reduces.Gradient increase, exercise intensity increase, knee joint load increases therewith, for person in middle and old age
For people, the gradient is excessive to increase kneed damage.On the contrary, the gradient is small, knee joint load is small, and exercise intensity is low, body-building effect
Rate is also low.Therefore, body builder needs to adjust the gradient of treadmill before running, selects after being adapted to the gradient of self-condition, then
Take exercise by running.
At present, the gradient adjusting mechanism of treadmill has moving leader formula and sliding block push-down.The step of moving leader formula
Stepper motor drives trapezoidal screw to rotate by worm and gear, and trapezoidal screw rotates the trapezoidal nut for driving and being fixed on lifter slide
It is mobile, lifter slide is driven one end to be hinged on double elevating levers on base along setting track motion and is rotated, realize the tune of the gradient
Section.Sliding block push-down mechanism by motor drive telescopic rod to extension or receding, to promote push rod to be moved forward or rearward, from
And the angle between the up and down rod piece of cross bar is adjusted, realize the adjusting of the gradient.Moving leader formula adjusting mechanism operates steadily,
Safety, large carrying capacity, but it is complicated, transmission efficiency is relatively low；Sliding block push-down adjusting mechanism is set according to linkage
Meter, structural stability is strong, but required driving force is larger.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of treadmill gradient for the above-mentioned state of the art
Adjusting mechanism, by the Parametric designing to mechanism, builds displacement equation, and numerical solution, finds out the factor for influencing slope change,
And motion simulation simulation is carried out, provide theoretical foundation for the accurate control that the gradient is adjusted.
To achieve the above object, the present invention provides following technical solution：
A kind of gradient adjusting mechanism of treadmill, includes base, in the fixed closed rod of the base top, institute
It is fixing end to state closed rod one end, and the fixing end is fixed on the top of the base, and the other end is free end, the free end
Can be rotated around the fixing end, be connected to swing rod on the free end, the closed rod the fixing end and free end it
Between fixed guide rod, the guide rod is vertical relative to the closed rod, and sliding block, the sliding block energy edge are arranged with the guide rod
The guide rod slides, and described swing rod one end is hinged on the sliding block, and the bottom of the other end is provided with pulley, and the pulley can be
Slided on ground, in the also fixed supporting rack of the base top, lifting motor is provided with support frame as described above, in the liter
Push rod is connected with drop motor, the push rod can move back and forth under the driving of the lifting motor, and the sidepiece of the sliding block connects
It is connected on the push rod, control chip is additionally provided with the base, the control chip can be according to the swing rod and ground shape
Into angle calcu-lation go out the displacement of the push rod.
As the improvement of the present invention, the control chip is that the displacement of push rod is calculated according to below equation,
In formula, x is the displacement of length, that is, push rod of the sliding block between guide rod bottom, and a is the length of closed rod, and b is
Sliding block apart from closed rod free end length, c for closed rod free end apart from the length of pulley, e is closed rod free end distance
Guide rod and the length of closed rod junction, α are the angle that swing rod is formed with ground, and d1 is the height of base top, and d2 is pulley
Overhead height.
As a further improvement on the present invention, the control chip provides electric energy by the lifting motor.
Another as the present invention improves, and potentiometric sensor, the potentiometric sensors are provided with the lifting motor
Device can adjust the feed speed of push rod according to the amplitude of accommodation of the gradient.
As a preference of the present invention, the potentiometric sensor adjusts the feeding of push rod speed according to formula I=K Δs α/v
Degree, K is slope coefficient, is fixed value 17.5mm/ (°), and Δ α is the gradient amplitude of accommodation, and v is the feed speed of push rod, and I is electricity
Stream, current value is fixed value, therefore Δ α and v is in inverse relation, and the gradient amplitude of accommodation is bigger, then the feed speed of push rod is slower.
As present invention further optimization, the value range of Δ α is 0-8.
Compared with prior art, the advantage of the invention is that：Stable connection, movement is reliable, is simple to manufacture, and easy to implement
Electric pushrod flexible and the gradient and push rod feed speed are precisely controlled.
Brief description of the drawings
Fig. 1 is the structure diagram of treadmill gradient adjusting mechanism in the embodiment of the present invention.
Embodiment
Below in conjunction with attached drawing embodiment, the present invention is described in further detail.
As shown in drawings, the present embodiment first discloses a kind of gradient adjusting mechanism of treadmill, includes base 1,
In the fixed closed rod 2 in base top A points position, closed rod one end is fixing end, and fixing end is fixed on the top A points of base,
The other end is free end, and free end can be rotated around fixing end, and swing rod 3, the connection of free end and swing rod are connected on free end
Position is B points, then the length of closed rod is AB sections of length, and closed rod is some of AB sections between fixing end and free end
Fixed guide rod 4 on position, guide rod is vertical relative to closed rod, and sliding block C is arranged with guide rod, and sliding block can glide along guide rod
Dynamic, the driving force that sliding block slides on guide rod derives from lifting motor 5, and lifting motor is fixed on base by supporting rack 6,
Push rod 7 is connected with lifting motor, push rod is connected to the sidepiece of sliding block, when lifting motor driving push rod does linear reciprocation feeding
When, just can band movable slider be slided along guide rod, the straight-line feed speed of push rod is v, sliding speed and push rod of the sliding block on guide rod
Feed speed it is identical.
3 one end of swing rod is hinged on sliding block C, and the bottom of the other end is provided with pulley H, is contacted at the top of pulley with swing rod bottom
Point is G, and the distance between G points and ground are the height d2 of pulley, and pulley can on the ground be slided, is additionally provided with base
Control chip, control chip are connected by cable with lifting motor, and control chip provides electric energy by lifting motor.The control chip
The displacement of the push rod can be calculated according to the angle α that the swing rod and ground are formed.Specifically, control chip is according to side
Formula
In formula, x is the displacement of length, that is, push rod of the sliding block between guide rod bottom, and a is the length of closed rod, and b is
Sliding block apart from closed rod free end length, c for closed rod free end apart from the length of pulley, e is closed rod free end distance
Guide rod and the length of closed rod junction, α are the angle that swing rod is formed with ground, and d1 is the height of base top, and d2 is pulley
Overhead height.Specifically, according to Triangle Formula, ∠ ABC=alpha+betas, β is the angle that closed rod is formed with ground, meanwhile,
According to string theorem is waited,
Cos (alpha+beta)=(b2+e2- x2)/2be,
A*sin β+d1=c*sin α+d2
Go out an expression formulas of the β on α by the two derivations of equation,
β=arcsin (c*sin α+d2-d1)/a, substitutes this expression into
Cos (alpha+beta)=(b2+e2- x2It can obtain the expression formula on X in)/2be
Potentiometric sensor is provided with lifting motor, the potentiometric sensor can be adjusted according to the amplitude of accommodation of the gradient
The feed speed of push rod.Potentiometric sensor adjusts the feed speed of push rod according to formula I=K Δs α/v, and K is slope coefficient,
For fixed value 17.5mm/ (°), Δ α is the gradient amplitude of accommodation, and v is the feed speed of push rod, and I is electric current, and current value is fixation
Value, therefore Δ α and v is in inverse relation, the gradient amplitude of accommodation is bigger, then the feed speed of push rod is slower.The value range of Δ α is 0-
8, in general, 8 ° be family expenses treadmill grade limit, the gradient of bigger will not produce preferable train on, on the contrary
Muscular fatigue can be caused.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
- A kind of 1. gradient adjusting mechanism of treadmill, it is characterised in that：Include base, it is fixed in the base top Closed rod, described closed rod one end are fixing end, and the fixing end is fixed on the top of the base, and the other end is free end, The free end can be rotated around the fixing end, swing rod is connected on the free end, the closed rod is in the fixing end The fixed guide rod between free end, the guide rod is vertical relative to the closed rod, and sliding block, institute are arranged with the guide rod Stating sliding block can slide along the guide rod, and described swing rod one end is hinged on the sliding block, and the bottom of the other end is provided with pulley, institute Stating pulley can slide on the ground, and in the also fixed supporting rack of the base top, lifting electricity is provided with support frame as described above Machine, is connected with push rod on the lifting motor, and the push rod can move back and forth under the driving of the lifting motor, the cunning The sidepiece of block is connected on the push rod, and control chip is additionally provided with the base, and the control chip can be according to the pendulum The angle calcu-lation that bar is formed with ground goes out the displacement of the push rod.
- 2. gradient adjusting mechanism according to claim 1, it is characterised in that：The control chip is according to below equation pair The displacement of push rod is calculated,<mrow> <mi>x</mi> <mo>=</mo> <msqrt> <mrow> <msup> <mi>b</mi> <mn>2</mn> </msup> <mo>+</mo> <msup> <mi>e</mi> <mn>2</mn> </msup> <mo>-</mo> <mn>2</mn> <mi>b</mi> <mi>e</mi> <mrow> <mo>(</mo> <msqrt> <mrow> <msup> <mi>a</mi> <mn>2</mn> </msup> <mo>-</mo> <msup> <mrow> <mo>(</mo> <mi>c</mi> <mi>s</mi> <mi>i</mi> <mi>n</mi> <mi>&alpha;</mi> <mo>+</mo> <msub> <mi>d</mi> <mn>2</mn> </msub> <mo>-</mo> <msub> <mi>d</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> <mo>*</mo> <msqrt> <mrow> <mn>1</mn> <mo>-</mo> <msup> <mi>sin</mi> <mn>2</mn> </msup> <mi>&alpha;</mi> </mrow> </msqrt> <mo>-</mo> <mi>s</mi> <mi>i</mi> <mi>n</mi> <mi>&alpha;</mi> <mo>*</mo> <mo>(</mo> <mi>c</mi> <mi>s</mi> <mi>i</mi> <mi>n</mi> <mi>&alpha;</mi> <mo>+</mo> <mo>+</mo> <msub> <mi>d</mi> <mn>2</mn> </msub> <mo>-</mo> <msub> <mi>d</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> <mo>/</mo> <mi>a</mi> <mo>)</mo> </mrow> </msqrt> </mrow>In formula, x is the displacement of length, that is, push rod of the sliding block between guide rod bottom, and a is the length of closed rod, and b is sliding block Length apart from closed rod free end, c are length of the closed rod free end apart from pulley, and e is closed rod free end apart from guide rod With the length of closed rod junction, α is the angle that swing rod is formed with ground, and d1 is the height of base top, and d2 is at the top of pulley Highly.
- 3. gradient adjusting mechanism according to claim 2, it is characterised in that：The control chip is carried by the lifting motor For electric energy.
- 4. gradient adjusting mechanism according to claim 2, it is characterised in that：Current potential biography is provided with the lifting motor Sensor, the potentiometric sensor can adjust the feed speed of push rod according to the amplitude of accommodation of the gradient.
- 5. gradient adjusting mechanism according to claim 4, it is characterised in that：The potentiometric sensor is according to formula I=K Δ α/v adjusts the feed speed of push rod, and K is slope coefficient, is fixed value 17.5mm/ (°), and Δ α is the gradient amplitude of accommodation, v For the feed speed of push rod, I is electric current, and current value is fixed value, therefore Δ α and v is in inverse relation, and the gradient amplitude of accommodation is bigger, Then the feed speed of push rod is slower.
- 6. gradient adjusting mechanism according to claim 5, it is characterised in that：The value range of Δ α is 0-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431341.4A CN107930015A (en) | 2017-12-26 | 2017-12-26 | A kind of gradient adjusting mechanism of treadmill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431341.4A CN107930015A (en) | 2017-12-26 | 2017-12-26 | A kind of gradient adjusting mechanism of treadmill |
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| Publication Number | Publication Date |
|---|---|
| CN107930015A true CN107930015A (en) | 2018-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711431341.4A Pending CN107930015A (en) | 2017-12-26 | 2017-12-26 | A kind of gradient adjusting mechanism of treadmill |
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| CN (1) | CN107930015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915464A (en) * | 2021-01-22 | 2021-06-08 | 合肥皮皮兽智能科技有限公司 | Damping control method for large-gradient running belt of fitness center |
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| US5372559A (en) * | 1988-10-12 | 1994-12-13 | Weslo, Inc. | Adjustable incline system for exercise equipment |
| CN2503927Y (en) * | 2001-07-23 | 2002-08-07 | 青岛英派斯集团有限公司 | Electric lifting mark time device |
| CN2636900Y (en) * | 2003-07-02 | 2004-09-01 | 王长富 | Raising device of treadlemill |
-
2017
- 2017-12-26 CN CN201711431341.4A patent/CN107930015A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| US4913396A (en) * | 1988-10-12 | 1990-04-03 | Weslo, Inc. | Adjustable incline system for exercise equipment |
| US4913396B1 (en) * | 1988-10-12 | 1993-05-18 | Weslo Inc | Adjustable incline system for exercise equipment |
| US5372559A (en) * | 1988-10-12 | 1994-12-13 | Weslo, Inc. | Adjustable incline system for exercise equipment |
| US4913396B2 (en) * | 1988-10-12 | 1995-06-20 | Weslo Inc | Adjustable incline system for exercise equipment |
| CN2503927Y (en) * | 2001-07-23 | 2002-08-07 | 青岛英派斯集团有限公司 | Electric lifting mark time device |
| CN2636900Y (en) * | 2003-07-02 | 2004-09-01 | 王长富 | Raising device of treadlemill |
Non-Patent Citations (1)
| Title |
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| 杨文珍: "一种电动跑步机坡度调节机构的设计和仿真", 《浙江理工大学学报（自然科学版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915464A (en) * | 2021-01-22 | 2021-06-08 | 合肥皮皮兽智能科技有限公司 | Damping control method for large-gradient running belt of fitness center |
| CN112915464B (en) * | 2021-01-22 | 2023-08-08 | 合肥皮皮兽智能科技有限公司 | Exercise center heavy-gradient running belt damping control method |
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Application publication date: 20180420 |