CN112383185B

CN112383185B - Buffer starter

Info

Publication number: CN112383185B
Application number: CN202011302413.7A
Authority: CN
Inventors: 张志林
Original assignee: Hubei Sainier Machinery Manufacturing Co ltd
Current assignee: Hubei Sainier Machinery Manufacturing Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2022-09-27
Anticipated expiration: 2040-11-19
Also published as: CN112383185A

Abstract

The invention belongs to the technical field of buffer starting, and particularly relates to a buffer starter which comprises a motor, a starting box and a planetary gear, wherein the motor is connected with the starting box; a starting box is arranged at the right side position of the motor; a driving shaft is rotatably connected inside the starting box; the surface of the driving column is rotationally connected with a first telescopic rod; the interior of the starting box is rotatably connected with a driven shaft, and the first telescopic rod is rotatably connected with the driven shaft; the outer arc surface of the driven shaft is fixedly connected with second telescopic rods which are uniformly arranged; the surface of the second telescopic rod is rotatably connected with a planetary gear; the invention effectively realizes the stepless adjustment of the output rotating speed of the motor, ensures that the output torque is smaller when the motor is initially started through the slow adjustment of the first telescopic rod and the second telescopic rod, simultaneously realizes the continuous adjustment of the transmission ratio, is more gentle in the adjustment process, has no transmission pause and frustration, realizes the protection effect when the motor is started, and prolongs the service life of the motor.

Description

Buffer starter

Technical Field

The invention belongs to the technical field of buffer starting, and particularly relates to a buffer starter.

Background

The buffer starter is a device used in cooperation with an alternating current motor, can temporarily reduce the load and the moment of the motor when the motor is started, and also reduces the surge current when the motor is started, so that the mechanical stress on the motor and a shaft when the motor is started can be reduced, the electromagnetic stress on a power distribution system and a cable is also reduced, and the service life of the system is prolonged.

According to the CN107659095A asynchronous motor, the synchronous additional torque can be weakened, and the design requirements of the asynchronous motor for outputting large torque at low rotating speed and outputting large power at high rotating speed can be met.

In the prior art, the motor has the defects of low starting torque and difficulty in meeting the requirement of starting with load, most methods for solving the problem in the current society are to improve the power capacity (capacity increase) of the motor to improve the starting torque, so that a serious 'big horse-drawn vehicle' is caused, the investment of purchasing equipment is increased, a large amount of electric quantity is wasted due to low-load operation in long-term application, and the method is not economical, a second method is to purchase a hydraulic coupler, the motor is started without load, when the load is driven by the hydraulic coupler, the investment of purchasing equipment is also increased, at least 3% of electric energy is wasted due to the efficiency of the hydraulic coupler being lower than 97%, so that the efficiency of the whole driving device is low, the electric quantity is wasted, when the motor is used for driving the load which often has short-time overload, such as a crusher used in a mine, the motor is often stopped and burnt out, so that the motor can only run under the condition of light load, the yield is reduced, electric energy is wasted, meanwhile, the starting current of the motor is very large, the capacity of a required power supply transformer is increased, and a large amount of investment is increased.

In view of the above, in order to overcome the above technical problems, the present inventors have designed and developed a buffer starter, which solves the above technical problems.

Disclosure of Invention

In order to overcome the disadvantages of the prior art, and to solve the problems of the prior art, in which the starting torque of the motor is not large and the requirement for starting with load is difficult to satisfy, most solutions to the problem in the present society are to increase the power capacity (i.e. capacity increase) of the motor to increase the starting torque thereof, which results in a serious "big horse-drawn vehicle", which increases the investment in equipment purchase and wastes a large amount of electricity due to low-load operation in long-term applications, which is not economical, and a second solution is to purchase a hydraulic coupler, which first starts the motor with no load and drives the load by the hydraulic coupler, which also increases the investment in additional equipment purchase and wastes at least 3% of electric energy due to the efficiency of the hydraulic coupler being lower than 97%, so that the efficiency of the whole driving device is very low and the electricity is also wasted, and when used to drive the load which often has short-time overload, the invention provides a buffer starter, which is characterized in that a motor is frequently stopped to burn out and only can be operated under the condition of light load, so that the yield is reduced, the electric energy is wasted, meanwhile, the starting current of the motor is very large, the capacity of a required power supply transformer is increased, and a large amount of investment is increased.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a buffer starter which comprises a motor, a starting box and a planetary gear, wherein the starting box is arranged at the right side position of the motor; the starting box is designed into a cuboid structure; a driving shaft is rotatably connected to the position, close to the front end face of the starting box, in the starting box; the surface of the driving shaft is fixedly connected with a driving gear; the surface of the driving shaft is rotatably connected with connecting rods at the left side and the right side of the driving gear; the rear end surfaces of the two connecting rods are fixedly connected with first telescopic rods; the positions, close to the rear end face of the starting box, in the starting box are rotatably connected with driven shafts, and the two first telescopic rods are rotatably connected with the driven shafts; the outer arc surface of the driven shaft is fixedly connected with second telescopic rods which are uniformly arranged, and the second telescopic rods on the surface of the driven shaft are arranged in a left-right matching manner; the two second telescopic rods arranged in pairs are connected with the same planetary gear in a co-rotating mode; the same first transmission belt is connected between the driving gear and the planetary gear; the end face of the right side of the driven shaft is connected with a connecting shaft; the right end face of the spindle penetrates through the starting box and extends to the outside of the starting box; a connecting gear is fixedly connected to the surface of the connecting shaft at a position close to the right end face of the connecting shaft;

when working, the buffer starter is a device used with an AC motor, and can temporarily reduce the load and moment when the motor is started, and also reduce the surge current when the motor is started, so that the mechanical stress on the motor and a shaft when the motor is started can be reduced, and the electromagnetic stress on a power distribution system and a cable wire can be reduced, and the service life of the system can be prolonged, in the prior art, the motor has the defects of small starting torque and difficulty in meeting the requirement of starting with load, most methods for solving the problem in the current society are to improve the power capacity (namely capacity increase) of the motor to improve the starting torque, so that a serious 'big horse-drawn trolley' is caused, the investment for purchasing the device is increased, a large amount of electric quantity is wasted due to the operation in long-term application, and the load is not economical, and the second method is to purchase a hydraulic coupler, firstly the motor is started without load, the load is driven by the hydraulic coupler, this method also requires an increase in investment in additional equipment, and wastes at least 3% of electric energy because the efficiency of the fluid coupling is less than 97%, and thus the efficiency of the entire drive is very low, and also wastes electric power, when used to drive a load that often has a short overload, such as a crusher used in a mine, the motor is often stopped and burned out, so that it can only operate under a light load condition, which reduces both the output and the electric power, and the starting current of the motor is very large, increasing the capacity of the required power supply transformer, thereby increasing a lot of investment, and another method is to use a reduced voltage start to reduce the starting current, and also requires an increase in investment in additional voltage reduction equipment, for mechanical buffer, a method of changing speed and reducing the transmission ratio by directly converting the transmission ratio, and problems such as transmission suspension and the like occur during the conversion, by means of the buffer starter of the present invention, when the buffer starter is needed to be used, firstly, a driving shaft of the buffer starter is in power connection with an output shaft of a motor, meanwhile, a connecting gear is connected with a load body, the motor is started, the motor can drive the driving shaft to rotate, the driving shaft can drive a driving gear to rotate, the driving gear can drive a first transmission belt to move, planetary gears can be driven to do revolution motion around the axis of a driven shaft through the first transmission belt, when the motor is initially started, a piston rod of a second telescopic rod is pushed out by adjusting the second telescopic rod, the second telescopic rod further drives the planetary gears to rotate around the axis of the driven shaft, the diameter of a revolution circle where all the planetary gears are located is enlarged, the diameter of the revolution circle where the planetary gears are located is larger than that of the driving gear, and when the driving gear drives the driven shaft through the first transmission belt and the planetary gears, the needed power is smaller, after the motor is started and accelerated, the piston rod of the second telescopic rod is synchronously and slowly retracted, and the first telescopic rod is ejected out at the same time, so that the first transmission belt is kept in a tightly-pulled state, the revolution circle diameter of the planetary gear is gradually reduced at the moment, and the torque value required to be input is increased.

Preferably, the surface of the driving gear is fixedly connected with a rotating disc at the right side position of the driving gear; a resistance box is fixedly connected with the rear position of the rotating disc in the starting box; the interior of the resistance box is rotatably connected with a resistance rod; the side face of the blocking rod, which is opposite to one side of the rotating disc, is fixedly connected with a top rod; the side surface of one side of the ejector rod relative to the rotating disc is fixedly connected with a contact block; the rear end surface of the resistance rod is hinged with a resistance block; a spring is fixedly connected between the lower surface of the block and the block box; the surface of the rotating disc is provided with guide pressing blocks which are uniformly distributed; the left side surface of the connecting shaft is provided with an installation groove; a third telescopic part is fixedly connected inside the mounting groove; the right side end face of the third telescopic rod is fixedly connected with a first guide connecting block; the right side surface of the driven shaft is fixedly connected with a second guide connecting block;

when the motor works, under the condition that a moving component is not used for a long time, because the moving part is lack of lubrication, even if stepless speed reduction adjustment is carried out, the starting resistance is still larger, in order to enable the motor to have enough power before being connected with a load, the third telescopic rod is firstly retracted to enable the first guide connecting block and the second guide connecting block to be separated from each other, then the ejector rod is ejected out, the ejector rod can drive the contact block to move to the position of the pressure guide block, the motor drives the driving shaft to rotate, the driving shaft can drive the rotating disc to rotate, the rotating disc further drives the pressure guide blocks uniformly arranged on the surface of the rotating disc to rotate, the contact block can be continuously pushed downwards through the pressure guide blocks, the contact block can drive the resistance rod to rotate, the resistance rod further drives the resistance block to move, and the pressure guide blocks need acting force and pass through acting force when pushing the contact block downwards through the gravity of the resistance block and the elasticity of the spring, when having guaranteed motor start earlier, increase the load, the motor operation gets up the back, leads to connect between the piece and with the ejector pin adduction with first lead and connect the piece with the second again for the motor switches over to insert external load, and the motor has sufficient kinetic energy this moment to make the motion move the mechanism operation.

Preferably, the left side surface and the right side surface of the resistance box are both provided with sliding grooves; the sliding blocks are connected inside the two sliding grooves in a front-back sliding mode; the two sliding blocks are connected with the same supporting rod in a rotating mode; the surface of the supporting rod is rotatably connected with a resistance rod;

the during operation, through setting up the slider, slide around the spout that hinders the case surface through the slider is inside, the slider and then drives the bracing piece motion, through the adjustment to the bracing piece, make the rotation fulcrum that hinders the pole change, and then according to lever principle, make the required effort of contact piece motion slowly increase, the motor can adapt to the adjustment at this in-process, when further reducing the motor and starting, under the condition that the motor output shaft did not rotate, the movement resistance is great, lead to the emergence of motor burnout problem.

Preferably, the outer surface of the rotating disc is provided with uniformly arranged rotating grooves; the inner parts of the rotating grooves are rotatably connected with the pressure guide blocks; the pressure guide block is designed into a cylindrical structure; the front end surface of the contact block is designed to be an arc-shaped structure, and the contact block and the pressure guide block are matched with each other;

the during operation is through leading the briquetting design to the cylinder structure, and leads the briquetting and all rotate the inside of connecting in the rotation groove on rolling disc surface, when leading the briquetting and contact between the piece contact roof pressure, leads the briquetting and can make rotation adjustment in the roof pressure, reduces to produce great wearing and tearing problem between top briquetting and the contact piece.

Preferably, the left side surface inside the starting box is rotatably connected with an adjusting rotary column; the number of the adjusting rotary columns is two, the adjusting rotary columns are symmetrically arranged left and right and front and back, and the adjusting rotary columns in the front positions are fixedly connected with the output shaft of the motor; the two adjusting rotary columns are connected with the same second transmission belt; an adjusting gear is fixedly connected to the outer surface of the driving shaft between the two adjusting rotating columns, and the adjusting gear is meshed with the second transmission belt;

during operation, adjust the rotary column through setting up, adjust through two and connect the second drive belt jointly between the rotary column, fixed connection between the direct output shaft with the motor of regulation rotary column in the place ahead position, it rotates to drive this regulation rotary column through the motor, this regulation rotates and can drive the transmission of second drive belt, can drive adjusting gear through the second drive belt and rotate, and then drive the driving shaft through adjusting gear and rotate, when first telescopic link is flexible, the driving shaft position can change, through this motion, guaranteed that the driving shaft can both effectually connect the power supply in each position, the problem of the common motion adjustment between power supply needs and the driving shaft has been avoided.

Preferably, a supporting block is fixedly connected to the left side surface inside the starting box; the number of the supporting blocks is two, and the supporting blocks are respectively positioned above and below the second transmission belt;

during operation, the supporting blocks are arranged on the upper side and the lower side of the second transmission belt, when the adjusting gear moves forwards and backwards, the adjusting gear moves up and down easily due to the non-integral hard structure of the second transmission belt, the second transmission belt can be effectively supported through the supporting blocks, and transmission of the adjusting gear can be stabilized.

The invention has the following beneficial effects:

1. according to the buffer starter, the motor, the starting box and the planetary gear are arranged, and the motor is connected with the motion mechanism in the starting box, so that stepless adjustment of the output rotating speed of the motor is effectively realized.

2. According to the buffer starter, the sliding block, the contact block and the supporting rod are arranged, the sliding block slides back and forth in the sliding groove in the surface of the resistance box, the sliding block further drives the supporting rod to move, the rotating fulcrum of the resistance rod is changed by adjusting the supporting rod, the acting force required by the movement of the contact block is slowly increased according to the lever principle, the motor can be adaptively adjusted in the process, and the problem that the motor is burnt due to large movement resistance under the condition that the motor output shaft does not rotate when the motor is started is further reduced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is an external view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a cross-sectional view at B-B of FIG. 3;

FIG. 6 is a cross-sectional view at C-C of FIG. 3;

FIG. 7 is a cross-sectional view taken at D-D in FIG. 3;

in the figure: the device comprises a motor 1, a driving shaft 11, an adjusting rotary column 12, a second transmission belt 13, an adjusting gear 14, a supporting block 15, a starting box 2, a rotating disc 21, a stop rod 22, a push rod 23, a contact block 24, a stop block 25, a spring 26, a guide pressing block 27, a planetary gear 3, a driving gear 31, a first telescopic rod 32, a driven shaft 33, a second telescopic rod 34, a first transmission belt 35, a connecting gear 36, a sliding block 37, a third telescopic rod 38, a first guide connecting block 39 and a second guide connecting block 310.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, the buffer starter of the present invention comprises a motor 1, a starting box 2 and a planetary gear 3, wherein the starting box 2 is arranged at the right side of the motor 1; the starting box 2 is designed into a cuboid structure; a driving shaft 11 is rotatably connected to the position, close to the front end face of the starting box 2, in the starting box 2; the surface of the driving shaft 11 is fixedly connected with a driving gear 31; the surface of the driving shaft 11 is rotatably connected with connecting rods at the left side and the right side of the driving gear 31; the rear end surfaces of the two connecting rods are fixedly connected with a first telescopic rod 32; the positions, close to the rear end face of the starting box 2, inside the starting box 2 are rotatably connected with driven shafts 33, and the two first telescopic rods 32 are rotatably connected with the driven shafts 33; the outer arc surface of the driven shaft 33 is fixedly connected with second telescopic rods 34 which are uniformly arranged, and the second telescopic rods 34 on the surface of the driven shaft 33 are arranged in a left-right matching manner; the two second telescopic rods 34 arranged in pairs are connected with the same planetary gear 3 in a co-rotating manner; the same first transmission belt 35 is connected between the driving gear 31 and the planetary gear 3; the right end face of the driven shaft 33 is connected with a connecting shaft; the right end face of the spindle penetrates through the starting box 2 and extends to the outside of the starting box 2; a connecting gear 36 is fixedly connected to the surface of the connecting shaft at a position close to the right end face of the connecting shaft;

when working, the buffer starter is a device used with AC motor, when the motor 1 is started, it can temporarily reduce its load and moment, and also reduce surge current, so that it can reduce the mechanical stress on the motor 1 and shaft, and also reduce the electromagnetic stress on the distribution system and cable, and prolong the service life of the system, in the existent technology, the motor has the defects of small starting torque, and is difficult to meet the requirement of starting with load, at present, most methods for solving said problem in society are to raise the power capacity of motor (i.e. capacity-increasing) to raise its starting torque, so that it can result in serious "large horse-drawn trolley", not only can increase investment for purchasing equipment, but also can waste large quantity of electric quantity due to low-load operation in long-term application, and is not economical, and the second method is to purchase hydraulic coupler, firstly make motor start without load, and drive load by hydraulic coupler, this method also requires an increase in investment in additional equipment, and wastes at least 3% of electric energy because the efficiency of the fluid coupling is less than 97%, and thus the efficiency of the entire drive is very low, and also wastes electric power, when used to drive a load that often has a short overload, such as a crusher used in a mine, the motor is often stopped and burned out, so that it can only operate under a light load condition, which reduces both the output and the electric power, and the starting current of the motor is very large, increasing the capacity of the required power supply transformer, thereby increasing a lot of investment, and another method is to use a reduced voltage start to reduce the starting current, and also requires an increase in investment in additional voltage reduction equipment, for mechanical buffer, a method of changing speed and reducing the transmission ratio by directly converting the transmission ratio, and problems such as transmission suspension and the like occur during the conversion, by means of the buffer starter of the present invention, when the buffer starter needs to be used, firstly, a driving shaft 11 of the buffer starter is in power connection with an output shaft of a motor 1, meanwhile, a connecting gear 36 is connected with a load, the motor 1 is started, the motor 1 can drive the driving shaft 11 to rotate, the driving shaft 11 can drive a driving gear 31 to rotate, the driving gear 31 can drive a first transmission belt 35 to move, a planetary gear 3 can be driven by the first transmission belt 35 to revolve around the axis of a driven shaft 33, when the motor 1 is initially started, a piston rod of a second telescopic rod 34 is pushed out by adjusting the second telescopic rod 34, the second telescopic rod 34 further drives the planetary gear 3 to rotate around the axis of the driven shaft 33, the diameter of a revolution circle where all the planetary gears 3 are located is enlarged, and the diameter of the revolution circle where the planetary gear 3 is located is larger than that of the driving gear 31, when the driving gear 31 drives the driven shaft 33 through the first transmission belt 35 and the planetary gears 3, the required power is small, after the motor 1 is started and accelerated, the piston rod of the second telescopic rod 34 is synchronously and slowly retracted, the first telescopic rod 32 is ejected out, the first transmission belt 35 is guaranteed to be in a tightly-pulled state, the diameter of the revolution circle of the planetary gear 3 is gradually reduced at the moment, and the value of the torque required to be input is increased.

As an embodiment of the present invention, the surface of the driving gear 31 is fixedly connected with a rotating disc 21 at the right position of the driving gear 31; a resistance box is fixedly connected with the rear position of the rotating disc 21 in the starting box 2; the interior of the resistance box is rotatably connected with a resistance rod 22; a top rod 23 is fixedly connected to the side surface of the stop rod 22 opposite to one side of the rotating disc 21; the side surface of the ejector rod 23 opposite to one side of the rotating disc 21 is fixedly connected with a contact block 24; the rear end surface of the resistance rod 22 is hinged with a resistance block 25; a spring 26 is fixedly connected between the lower surface of the block 25 and the resistance box; the surface of the rotating disc 21 is provided with guide pressure blocks 27 which are uniformly arranged; the left side surface of the connecting shaft is provided with an installation groove; the inside of the mounting groove is fixedly connected with a third telescopic part 38; the right side end face of the third telescopic rod 38 is fixedly connected with a first guide connecting block 39; the right side surface of the driven shaft 33 is fixedly connected with a second guide connecting block 310;

when the motor works, under the condition that a moving component is not used for a long time, because the moving part is lack of lubrication, even if stepless speed reduction adjustment is carried out, the starting resistance is still larger, in order to ensure that the motor 1 can have enough power before being connected with a load, the third telescopic rod 38 is firstly retracted by arranging the rotating disc 21, so that the first guide connecting block 39 and the second guide connecting block 310 are separated from each other, then the ejector rod 23 is ejected, the ejector rod 23 can drive the contact block 24 to move to the position of the guide pressing block 27, the motor 1 drives the driving shaft 11 to rotate, the driving shaft 11 can drive the rotating disc 21 to rotate, the rotating disc 21 further drives the guide pressing block 27 uniformly arranged on the surface to rotate, the contact block 27 can continuously push the contact block 24 downwards, the contact block 24 can drive the resistance rod 22 to rotate, the resistance rod 22 further drives the resistance block 25 to move, and when the guide pressing block 27 pushes the contact block 24 downwards, the acting force is needed, and through the acting force, when the motor 1 is started in the earlier stage, the load is increased, after the motor 1 runs, the first guide connecting block 39 and the second guide connecting block 310 are connected, and the push rod 23 is retracted, so that the motor 1 is switched into an external load, and the motor 1 has enough kinetic energy to run the movement mechanism at the moment.

As an implementation mode of the invention, the left side surface and the right side surface of the resistance box are both provided with sliding chutes; the sliding blocks 37 are connected in the two sliding grooves in a front-back sliding mode; the two sliding blocks 37 are connected with the same supporting rod in a rotating mode; the surface of the supporting rod is rotatably connected with a resistance rod 22;

during operation, through setting up slider 37, slide around the spout that hinders the case surface is inside through slider 37, slider 37 and then drives the bracing piece motion, through the adjustment to the bracing piece, make the rotation fulcrum that hinders pole 22 change, and then according to lever principle, make contact block 24 move required effort and slowly increase, motor 1 can adapt to the adjustment at this in-process, when further reducing motor 1 and starting, under the condition that motor 1 output shaft did not rotate, the movement resistance is great, lead to the emergence of motor 1 burnout problem.

As an embodiment of the present invention, the outer surface of the rotating disc 21 is provided with uniformly arranged rotating grooves; the inner parts of the rotating grooves are rotatably connected with pressure guide blocks 27; the pressure guide block 27 is designed into a cylindrical structure; the front end face of the contact block 24 is designed to be of an arc structure, and the contact block 24 and the pressure guide block 27 are matched with each other;

during operation, through leading briquetting 27 to design for the cylinder structure, and lead briquetting 27 and all rotate the inside of connecting in the rotation groove on rolling disc 21 surface, when leading briquetting 27 and contact between the contact piece 24 during the roof pressure, lead briquetting 27 and can make the rotation adjustment in the roof pressure, reduce and produce great wearing and tearing problem between top briquetting and the contact piece 24.

As an embodiment of the invention, the left side surface inside the starting box 2 is rotatably connected with an adjusting rotary column 12; the number of the adjusting rotary columns 12 is two, the adjusting rotary columns are symmetrically arranged left and right and front and back, and the adjusting rotary columns 12 in the front positions are fixedly connected with the output shaft of the motor 1; the same second transmission belt 13 is connected between the two adjusting rotary columns 12; an adjusting gear 14 is fixedly connected to the outer surface of the driving shaft 11 between the two adjusting rotating columns 12, and the adjusting gear 14 is meshed with the second transmission belt 13;

during operation, adjust rotary column 12 through the setting, through two second drive belt 13 of connecting jointly between adjusting rotary column 12, fixed connection between the direct output shaft with motor 1 of regulation rotary column 12 of place ahead position, it rotates to drive this regulation rotary column 12 through motor 1, this regulation is rotated and can be driven second drive belt 13 transmission, can drive adjusting gear 14 through second drive belt 13 and rotate, and then drive driving shaft 11 through adjusting gear 14 and rotate, when first telescopic link 32 is flexible, 11 positions of driving shaft can change, through this motion structure, it can both effectual connection power supply to have guaranteed driving shaft 11 at each position, the problem of common motion adjustment between power supply needs and driving shaft 11 has been avoided.

As an embodiment of the invention, the left side surface inside the starting box 2 is fixedly connected with a supporting block 15; the number of the supporting blocks 15 is two, and the supporting blocks are respectively positioned above and below the second transmission belt 13;

during operation, through all setting up supporting shoe 15 in the upper and lower both sides of second drive belt 13, during the adjustment of adjusting gear 14 seesaw, because the not whole stereoplasm structure of second drive belt 13, the drunkenness problem about adjusting gear 14 appears easily, can effectual support second drive belt 13 through supporting shoe 15, guarantees the transmission that adjusting gear 14 can be stable.

The specific working process is as follows:

when the buffer starter is used, firstly, a driving shaft 11 of the buffer starter is in power connection with an output shaft of a motor 1, meanwhile, a connecting gear 36 is connected with a load, the motor 1 is started, the motor 1 can drive the driving shaft 11 to rotate, the driving shaft 11 can drive a driving gear 31 to rotate, the driving gear 31 can drive a first transmission belt 35 to move, a planetary gear 3 can be driven to revolve around the axis of a driven shaft 33 through the first transmission belt 35, when the motor 1 is initially started, a piston rod of a second telescopic rod 34 is pushed out by adjusting the second telescopic rod 34, the second telescopic rod 34 further drives the planetary gear 3 to rotate around the axis of the driven shaft 33, the diameter of a revolution circle where all planetary gears 3 are located is enlarged, and the diameter of the revolution circle where the planetary gear 3 is larger than that of the driving gear 31, at the moment, when the driving gear 31 drives the driven shaft 33 through the first transmission belt 35 and the planetary gears 3, the required power is small, after the motor 1 is started and accelerated, the piston rod of the second telescopic rod 34 is synchronously and slowly retracted, and meanwhile, the first telescopic rod 32 is ejected out, so that the first transmission belt 35 is ensured to be kept in a tightly-pulled state, the diameter of the revolution circle where the planetary gear 3 is located is gradually reduced, and the torque value required to be input is increased; by arranging the rotating disc 21, firstly, the third telescopic rod 38 is retracted to separate the first guide block 39 and the second guide block 310 from each other, then the ejector rod 23 is ejected, the ejector rod 23 can drive the contact block 24 to move to the position of the guide block 27, the motor 1 drives the driving shaft 11 to rotate, the driving shaft 11 can drive the rotating disc 21 to rotate, the rotating disc 21 further drives the guide blocks 27 uniformly arranged on the surface of the rotating disc to rotate, the contact block 24 can be continuously pushed downwards by the guide block 27, the contact block 24 can drive the resistance rod 22 to rotate, the resistance rod 22 further drives the resistance block 25 to move, the gravity of the resistance block 25 and the elastic force of the spring 26 are utilized to ensure that the acting force is required when the guide block 27 pushes the contact block 24 downwards, the load is increased when the motor 1 is started in earlier stage, after the motor 1 is operated, the first guide block 39 and the second guide block 310 are connected and the ejector rod 23 is retracted, the motor 1 is switched into an external load, and the motor 1 has enough kinetic energy to enable the movement mechanism to run; through the arrangement of the sliding block 37, the sliding block 37 slides back and forth in the sliding groove on the surface of the resistance box, the sliding block 37 further drives the supporting rod to move, the rotating fulcrum of the resistance rod 22 is changed through adjustment of the supporting rod, and then the acting force required by the movement of the contact block 24 is slowly increased according to the lever principle, the motor 1 can be adaptively adjusted in the process, so that the problem that the motor 1 is burnt due to large movement resistance under the condition that the output shaft of the motor 1 is not rotated when the motor 1 is started is further reduced; by designing the pressure guide block 27 to be a cylindrical structure and rotationally connecting the pressure guide block 27 to the inside of the rotating groove on the surface of the rotating disc 21, when the pressure guide block 27 and the contact block 24 are contacted and pressed, the pressure guide block 27 can be rotationally adjusted while being pressed, so that the problem of large abrasion between the pressure guide block and the contact block 24 is solved; through setting the adjusting rotary columns 12, the two adjusting rotary columns 12 are connected with the second transmission belt 13 together, the adjusting rotary column 12 at the front position is directly and fixedly connected with the output shaft of the motor 1, the adjusting rotary column 12 is driven to rotate through the motor 1, the adjusting rotation can drive the second transmission belt 13 to transmit, the second transmission belt 13 can drive the adjusting gear 14 to rotate, the driving shaft 11 is further driven to rotate through the adjusting gear 14, when the first telescopic rod 32 is stretched, the position of the driving shaft 11 can be changed, through the movement structure, the driving shaft 11 can be effectively connected with a power source at each position, and the problem that the power source needs to be adjusted by moving together with the driving shaft 11 is avoided; through all setting up supporting shoe 15 in the upper and lower both sides of second drive belt 13, when adjusting gear 14 seesaw adjustment, because the non-whole stereoplasm structure of second drive belt 13, drunkenness problem about adjusting gear 14 appears easily, through supporting shoe 15 can effectual support second drive belt 13, the transmission that assurance adjusting gear 14 can be stable.

While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a buffering starter, includes motor (1), start-up box (2) and planetary gear (3), its characterized in that: a starting box (2) is arranged at the right side position of the motor (1); the starting box (2) is designed into a cuboid structure; a driving shaft (11) is rotatably connected to the position, close to the front end face of the starting box (2), in the starting box (2); the surface of the driving shaft (11) is fixedly connected with a driving gear (31); the surface of the driving shaft (11) is rotatably connected with connecting rods at the left side and the right side of the driving gear (31); the rear end surfaces of the two connecting rods are fixedly connected with first telescopic rods (32); the rear end face of the inside of the starting box (2), which is close to the starting box (2), is rotatably connected with a driven shaft (33), and the two first telescopic rods (32) are rotatably connected with the driven shaft (33); the outer arc surface of the driven shaft (33) is fixedly connected with second telescopic rods (34) which are uniformly arranged, and the second telescopic rods (34) on the surface of the driven shaft (33) are arranged in a left-right matching manner; the two second telescopic rods (34) which are arranged in pairs are connected with the same planetary gear (3) in a co-rotating manner; the same first transmission belt (35) is connected between the driving gear (31) and the planetary gear (3); the right end face of the driven shaft (33) is connected with a connecting shaft; the right end face of the spindle penetrates through the starting box (2) and extends to the outside of the starting box (2); and a connecting gear (36) is fixedly connected to the surface of the connecting shaft at a position close to the right end face of the connecting shaft.

2. A buffer starter according to claim 1 wherein: the surface of the driving gear (31) is fixedly connected with a rotating disc (21) at the right side position of the driving gear (31); a resistance box is fixedly connected with the rear position of the rotating disc (21) in the starting box (2); a resistance rod (22) is rotatably connected inside the resistance box; a push rod (23) is fixedly connected to the side face of one side of the stop rod (22) relative to the rotating disc (21); the side surface of the ejector rod (23) opposite to one side of the rotating disc (21) is fixedly connected with a contact block (24); the rear end surface of the resistance rod (22) is hinged with a resistance block (25); a spring (26) is fixedly connected between the lower surface of the block (25) and the resistance box; guide pressing blocks (27) which are uniformly arranged are arranged on the surface of the rotating disc (21); the left side surface of the connecting shaft is provided with an installation groove; a third telescopic part (38) is fixedly connected inside the mounting groove; the right side end face of the third telescopic rod (38) is fixedly connected with a first guide connecting block (39); and the right side surface of the driven shaft (33) is fixedly connected with a second guide connecting block (310).

3. A buffer starter according to claim 2 wherein: the left side surface and the right side surface of the resistance box are both provided with sliding chutes; the sliding blocks (37) are connected in the two sliding grooves in a front-back sliding manner; the two sliding blocks (37) are connected with the same supporting rod in a rotating mode; the surface of the supporting rod is rotatably connected with a resistance rod (22).

4. A buffer starter according to claim 2 wherein: the outer surface of the rotating disc (21) is provided with rotating grooves which are uniformly distributed; the inner parts of the rotating grooves are rotatably connected with pressure guide blocks (27); the pressure guide block (27) is designed into a cylindrical structure; the front end face of the contact block (24) is designed to be of an arc-shaped structure, and the contact block (24) and the pressure guide block (27) are matched with each other.

5. A buffer starter according to claim 1 wherein: the left side surface inside the starting box (2) is rotatably connected with an adjusting rotary column (12); the number of the adjusting rotary columns (12) is two, the adjusting rotary columns are symmetrically arranged left and right and front and back, and the adjusting rotary columns (12) in the front position are fixedly connected with the output shaft of the motor (1); the two adjusting rotary columns (12) are connected with the same second transmission belt (13) together; the outer surface of the driving shaft (11) is fixedly connected with an adjusting gear (14) between the two adjusting rotating columns (12), and the adjusting gear (14) is meshed with the second transmission belt (13) to be connected.

6. A buffer starter according to claim 5 wherein: the left side surface inside the starting box (2) is fixedly connected with a supporting block (15); the number of the supporting blocks (15) is two, and the supporting blocks are respectively positioned above and below the second transmission belt (13).