CN102661257B - Rubber belt accumulator - Google Patents

Abstract

The invention discloses a rubber belt type energy accumulator and aims to provide a novel rubber belt type energy accumulator which is high in energy transformation ratio, high in energy density, light in weight and simple in structure. The rubber belt type energy accumulator comprises an end cover, a casing, a rubber belt, a rotary drum, multiple guiding rolling shafts, a power transmission shaft, a brake shaft and a brake device, wherein the rubber belt is supported by the multiple guiding rolling shafts to extend along an approximate Archimedes spiral. The rubber belt type energy accumulator can be used for storing and transforming kinetic energy; in the energy accumulation process, the kinetic energy inputted to the energy accumulator can be stored in the form of rubber belt elastic potential energy; and in the energy releasing process, the elastic potential energy stored in the rubber belt is transformed into kinetic energy which is outputted to the external environment. The rubber belt type energy accumulator is suitable for recycling braking energy of equipments such as vehicles and elevators.

Description

Rubber belt accumulator

technical field

The present invention relates to an accumulator, more particularly, the present invention relates to a rubber belt accumulator.

Background technique

During the movement of vehicles, elevators and other equipment, frequent braking and starting often occur. During the braking process, the kinetic energy of vehicles, elevators and other equipment is converted into heat energy through the braking device and is wasted. In order to make full use of the braking energy of vehicles, elevators and other equipment, there are usually three braking energy recovery methods:

The first braking energy recovery method is to convert the kinetic energy of vehicles, elevators, etc. into hydraulic energy and air pressure energy through secondary components such as hydraulic pumps and air compressors, and store them in accumulators. Hydraulic or pneumatic accumulators are mainly divided into pneumatic, gravity and spring types. Inflatable accumulators include air bag type, piston type, direct contact type, etc., which are mainly used in hydraulic and pneumatic systems. During the energy storage process, they cannot be used alone, and have the defects of low energy conversion rate and low energy density. Although gravity accumulators and spring accumulators have high energy conversion rates, they have the disadvantage of low energy density.

The second braking energy recovery method is to convert the kinetic energy of vehicles, elevators, etc. into electrical energy through a generator and store it. The devices for storing electrical energy mainly include batteries and supercapacitors, both of which need to convert mechanical energy into electrical energy storage through a generator, and there are also disadvantages such as low energy conversion efficiency and low braking energy recovery and utilization rate.

The third braking energy recovery method is to directly convert and store the kinetic energy of the rotating parts into kinetic energy or potential energy. This energy storage method currently mainly has two forms: clockwork spring energy storage and flywheel energy storage. Energy conversion, high energy conversion efficiency. Clockwork spring energy storage is generally only used in clocks and toys due to its low energy density. Flywheel energy storage is still immature due to high cost and technical difficulty.

Contents of the invention

The purpose of the present invention is to overcome the above defects and provide a new type of rubber belt accumulator with high energy conversion rate, high energy density, light weight and simple structure.

In order to solve the above technical problems, the rubber belt accumulator of the present invention includes an end cover, a housing, a rubber belt, a roller, a plurality of guide rollers, a power transmission shaft, a brake shaft and a brake device. The end cover and the shell are of a split structure. The end cover and the shell are fixedly connected by bolts. The end cover and the shell form a cavity inside. The shell has a mounting base. Pin positioning, rubber belts, rollers, and multiple guide rollers are all completely inside the cavity formed by the end cap and the housing.

The drum adopts a hollow cylinder structure, which can not only reduce weight, save materials, but also reduce the moment of inertia of the drum. The left end of the drum is fixedly connected to the right end of the power transmission shaft with bolts, the right end of the drum is fixedly connected to the left end of the brake shaft with bolts, the left end of the power transmission shaft protrudes outside the end cover, and the middle part of the power transmission shaft is supported by bearings. On the end cover, the right end of the brake shaft protrudes to the outside of the housing, and the right end of the brake shaft is fixedly connected with the brake disc through a nut. The middle part of the brake shaft is supported on the housing through bearings. Multiple guide rollers The left ends of the guide rollers are all installed and supported in the bearing housing holes of the end cover through multiple bearings, and the right ends of the multiple guide rollers are all installed and supported in the bearing housing holes of the housing through multiple bearings.

The rubber belt type accumulator can use a single rubber belt or multiple rubber belts. The inner end of the rubber belt is placed between the inner fixed upper splint and the inner fixed lower splint, and is fixed and clamped in the rubber belt of the drum by bolts. In the end installation groove, the middle part of the rubber belt is supported by multiple guide rollers. This support method is beneficial to increase the length of the rubber belt, thereby increasing the energy that the rubber belt can store. Multiple guide rollers are installed on the end cover through bearings. And on the shell, the hole centers of the bearing seat holes of the end cover are distributed on an Archimedes spiral with the outer diameter of the drum as the base circle, and the hole centers of the bearing seat holes of the shell are distributed on a line with the outer diameter of the drum as the base circle. On the Archimedes spiral of the base circle, the outer end of the rubber band is placed between the outer fixed upper splint and the outer fixed lower splint, and is fixed and clamped on the cylindrical wall of the inner cavity of the housing by bolts. When multiple rubber belts are used, in order to balance the stress on each rubber belt, the length, width and thickness of each rubber belt should be the same. When the rubber belt is not tensioned without storing energy, it is wound on the drum in a single layer due to the short length of the rubber belt; on the roller.

The brake device includes a brake device housing, a brake caliper body and a piston. The brake device is located on the right side of the housing, and the brake device housing of the brake device is fixedly connected to the housing by bolts. There is a positioning boss on the brake caliper body, and the positioning of the positioning boss and the brake device housing The groove is a clearance fit. Since the length of the positioning boss is 3-6 mm shorter than the length of the positioning groove, the brake caliper body has an axial gap of 3-6 mm in the brake device housing, and there is a guide pin at one end of the brake caliper body. , the guide pin and the guide pin hole of the brake device housing are clearance fit, the other end of the brake caliper body has a piston chamber, the outer end of the brake caliper has a brake hydraulic oil port connected to the piston chamber, and the piston is mounted on In the piston cavity, the end of the brake caliper body with the guide pin is connected with a fixed brake block on the inner side, and the end of the piston close to the brake disc is equipped with a movable brake block, so that the fixed brake block and the movable brake block are respectively located at the brake On both sides of the end surface of the moving disc, and the fixed brake block and the movable brake block maintain a gap of 0.3-0.8 mm between the two end faces of the brake disc.

When a certain pressure of hydraulic oil is supplied to the brake hydraulic oil port, the piston is stretched out under the action of hydraulic pressure, and the brake block at the outer end of the piston is first pressed against the end surface of the brake disc on one side. There is an axial clearance of 3-6 mm in the housing of the brake device, which can make the brake caliper body move outward, so that the fixed brake block is pressed against the end surface of the other side of the brake disc, and the brake device is in the braking position. state; when the pressure of the brake hydraulic oil port is released, the piston returns, so that the brake block at the outer end of the piston and the end face of the brake disc on one side generate a gap, and the fixed brake block and the other end face of the brake disc A gap is generated, and the braking device is in a non-braking state.

The basic working principle of the rubber belt accumulator is as follows: fix the installation base of the accumulator shell, and during the energy storage process of the accumulator, the braking device remains in the non-braking device state, and the kinetic energy is input from the power transmission shaft. Drive the roller to rotate, because the inner end of the rubber belt is fixed on the roller, the outer end of the rubber belt is fixed on the shell, the middle part of the rubber belt is supported by a plurality of guide rollers, the rotation of the roller makes the rubber belt tensioned from the inner end and Wound on the drum layer by layer, the input kinetic energy is stored in the form of elastic potential energy of the rubber belt; in the process of releasing energy from the accumulator, the braking device remains in the non-braking device state, and the tensioned rubber belt is under the action of elastic force Contraction drives the roller to rotate, converts the elastic potential energy stored in the rubber belt into kinetic energy, and outputs kinetic energy from the power transmission shaft; when the accumulator neither stores energy nor releases energy, the roller is braked by the braking device, and the roller cannot rotate. The length of the rubber band remains constant and the energy of the accumulator remains constant.

Compared with the prior art, the present invention has the advantages that the energy storage medium of the rubber belt accumulator is a rubber belt made of rubber material, the length of the rubber belt is large, and the density of the rubber is small, and its density is only that of alloy steel. 0.128 times of that, the elastic deformation of the rubber is large, so that the energy density of the rubber belt accumulator is high and the weight is light. High and fast.

Description of drawings

Fig. 1 is a structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a cross-sectional view along line I-I in Fig. 1 of Embodiment 1 of the present invention

Fig. 3 is a characteristic diagram of the position distribution of multiple guide roller bearing housing holes in Embodiment 1 of the present invention

Fig. 4 is a structural diagram of Embodiment 2 of the present invention.

In the figure: 1. End cover, 1a. Bearing seat hole, 1b. Bearing seat hole, 2. Housing, 2a. Bearing seat hole, 2b. Bearing seat hole, 3. Rubber belt, 3a. Outer end, 3b. Inner 4. The outer end fixes the upper splint, 5. The outer end fixes the lower splint, 6. Bolts, 7. Multiple guide rollers, 8. Bearings, 9. Rollers, 9a. Rubber belt inner end installation groove, 10. Manufacturing Moving device, 11. brake device housing, 11a. brake caliper body positioning groove, 11b. brake caliper body guide pin hole, 12. brake caliper body, 12a. brake caliper body positioning boss, 12b. Moving caliper body guide pin, 12c. Brake hydraulic oil port, 12d. Piston cavity, 13. Piston, 14. Movable brake block, 15. Fixed brake block, 16. Brake shaft, 17. Nut, 18. Bearing , 19. Brake disc, 20. Mounting base, 21. Power transmission shaft, 22. Bearing, 23. Inner end fixed lower splint, 24. Bolt, 25. Inner end fixed upper splint, 26. Bearing.

Detailed ways

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1 and Figure 2, the rubber belt accumulator according to Embodiment 1 of the present invention includes: an end cover 1, a housing 2, a rubber belt 3, a roller 9, a plurality of guide rollers 7, a power transmission shaft 21, The brake shaft 16 and the brake device 10, wherein the rubber belt 3 adopts a single rubber belt.

The end cover 1 and the shell 2 are split structures. The end cover 1 and the shell 2 are fixedly connected by bolts. The end cover and the shell form a cavity inside. In order to ensure the accuracy of the installation position of the end cover 1 and the housing 2, the right side of the housing 2 is fixedly connected to the brake device 10, and the housing 2 has a mounting base 20, which is used to fix the rubber belt type accumulator during use. The left end of the drum 9 is connected with a power transmission shaft 21 with a bolt, the middle part of the power transmission shaft 21 is supported on the end cover 1 through a bearing 22, and the right end of the drum 9 is connected with a brake shaft 16 of the braking device 10 with a bolt. The hollow cylindrical structure has a mounting groove 9a for installing the inner end 3b of the rubber belt on the outer cylindrical surface. The middle part of the brake shaft 16 is supported on the housing 2 through a bearing 18, and the right end of the brake shaft 16 is in the housing. The outside of the body 2 is fixedly connected with a brake disc 19 through a nut 17, the brake disc 19 is located between the fixed brake block 15 and the movable brake block 14 of the brake device 10, and the inner end 3b of the rubber band 3 is placed at the inner end Between the fixed upper splint 25 and the inner end fixed lower splint 23, it is fixed and clamped in the rubber belt inner end installation groove 9a on the drum 9 by bolts 24, and the middle part of the rubber belt 3 is carried out by a plurality of guide rollers 7. Support, the left ends of multiple guide rollers 7 are installed and supported in the bearing seat hole 1a of the end cover 1 through bearings 26, and the right ends of multiple guide rollers 7 are installed and supported in the bearing seat hole 2a of the housing 2 through bearings 8 Inside. The outer end 3a of the rubber band 3 is placed between the outer end fixed upper splint 4 and the outer end fixed lower splint 5, and is fixed and clamped on the cylindrical wall surface of the inner cavity of the housing 2 by bolts 6.

The brake device 10 is located on the right side of the housing 2, and the brake device 10 includes a brake device housing 11, a brake caliper body 12 and a piston 13, and the brake device housing 11 is fixedly connected to the housing 2 by bolts. The brake caliper body 12 is provided with a positioning boss 12a, and the positioning boss 12a and the positioning groove 11a of the braking device housing 11 are clearance fits, and the length of the positioning boss 12a is less than the length 4 mm of the positioning groove 11a, so that The moving caliper body 12 has an axial gap of 4mm in the brake device housing 11, and one end of the brake caliper body 12 is provided with a guide pin 12b, and the guide pin 12b and the guide pin hole 11b of the brake device housing 11 adopt a gap Cooperate, the other end of the brake caliper body 12 has a piston chamber 12d, the outer end of the brake caliper body 12 has a brake hydraulic oil port 12c connected to the piston chamber 12d, the piston 13 is installed in the piston chamber 12d, and the brake caliper One end of the body 12 provided with the guide pin 12b is connected with a fixed brake block 15 on its inner side, and the piston 13 is equipped with a movable brake block 14 at an end close to the brake disc 19, and the fixed brake block 15 and the movable brake block 14 are respectively Located on both sides of the end face of the brake disc 19 , the fixed brake block 15 and the movable brake block 14 maintain a gap of 0.4 mm between the two end faces of the brake disc 19 .

Fig. 3 is a characteristic diagram of the position distribution of a plurality of guide roller bearing housing holes 2a in Embodiment 1 of the present invention. In order to ensure that the rubber belt 3 deforms evenly during stretching or shrinking, the middle part of the rubber belt that is not wound on the drum is supported by a plurality of guide rollers 7. This support method is conducive to increasing the length of the rubber belt 3, thereby increasing the rubber belt. With the energy that can be stored in the belt 3, a plurality of guide rollers 7 are installed on the end cover 1 and the housing 7 through the bearing 8, and the center of the bearing seat hole 2a of the housing 2 is distributed on a line with the outer diameter of the drum as the base circle. On the Archimedes spiral 2b. Similarly, the center of the bearing seat hole 1a of the end cover 1 is distributed on an Archimedes spiral with the outer diameter of the drum as the base circle, and the bearing seat hole 1a of the end cover and the bearing seat hole 2a of the housing are one by one correspond and maintain symmetry.

Figure 4 is a structural diagram of a rubber belt accumulator according to Embodiment 2 of the present invention, including an end cover 1, a housing 2, a rubber belt 3, a roller 9, a plurality of guide rollers 7, a power transmission shaft 21, a brake Shaft 16 and braking device 10. The rubber belt 3 of the second embodiment of the present invention is four rubber belts. In order to balance the force on each rubber belt, the structure of each rubber belt is the same, and the structural features of other parts are the same as the rubber belt type energy storage of the first embodiment of the present invention. device is the same.

When the rubber belt type accumulator is installed, the mounting base 24 is fixed. When the accumulator neither stores energy nor releases energy, a certain pressure of hydraulic oil is supplied to the brake hydraulic oil port 12d, and the piston 13 is stretched out under the action of hydraulic pressure, and the movable brake block 14 at the outer end of the piston 13 is pressed first. On one end face of the brake disc 19, since the brake caliper body 12 has an axial gap of 4 millimeters in the brake device housing 11, the brake caliper body 12 is moved outward, thereby making the fixed brake block 15 Pressing against the other end surface of the brake disc, the braking device 10 is in the braking state, the drum 9 is braked by the braking device 10, the drum 9 cannot rotate, the length of the rubber belt 3 remains unchanged, and the accumulator The energy remains unchanged; during the energy storage process of the accumulator, the hydraulic oil is released from the brake hydraulic oil port 12d, and the piston 13 is returned, so that the movable brake block 14 connected to one end of the piston 13 and the brake disc 19 are connected to each other. A gap of 0.4 mm is generated on the side end face, and a gap of 0.4 mm is generated on the other side end face of the fixed brake block 15 and the brake disc 19. The braking device 10 is in a non-braking state, and the kinetic energy is input from the power transmission shaft 21 to drive the roller 9 Rotate, because the inner end 3b of the rubber belt is fixed on the roller 9, the outer end 3b of the rubber belt 3 is fixed on the housing 2, the middle part of the rubber belt 3 is supported by a plurality of guide rollers 7, the rotation of the roller 3 makes the rubber belt 3 It is tensioned and wound on the drum 9 layer by layer starting from the inner end 3b, and the input kinetic energy is stored in the form of elastic potential energy of the rubber belt; during the energy release process of the accumulator, the hydraulic oil is discharged from the brake hydraulic oil port 12d Press the piston 13 back, so that the movable brake block 14 connected to one end of the piston 13 and the end surface of the brake disc 19 produce a gap of 0.4 mm, and the fixed brake block 15 and the other end surface of the brake disc 19 form a gap of 0.4 mm. With a gap of 0.4 mm, the braking device 10 is in a non-braking state, and the stretched rubber belt 3 shrinks under the action of the elastic force, driving the roller 9 to rotate, converting the elastic potential energy stored in the rubber belt 3 into kinetic energy, which is transmitted from the power transmission shaft 21 output.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. Variations.

Claims (5)

1. a rubber belt type accumulator, comprises end cap (1), housing (2), rubber tape (3), cylinder (9), a plurality of guiding roller bearing (7), power transmission shaft (21), brake axle (16) and braking device (10), it is characterized in that:

Described end cap (1) is split-type structural with housing (2), and end cap (1) is bolted to connection with housing (2), and a cavity of end cap (1) and the inner formation of housing (2), has mounting base (20) on housing (2);

Described rubber tape (3), cylinder (9), a plurality of guiding roller bearing (7) are all positioned at the cavity inside of end cap (1) and housing (2) formation completely;

The left end of described cylinder (9) is fixedly attached to the right-hand member of power transmission shaft (21) with bolt, the right-hand member of cylinder (9) is fixedly attached to the left end of brake axle (16) with bolt;

The left end of described power transmission shaft (21) reaches end cap (1) outside, and the intermediate portion of power transmission shaft (21) is supported on end cap (1) by bearing (22);

The right-hand member of described brake axle (16) reaches the outside of housing (2), and the right-hand member of brake axle (16) is fixedly connected with brake disc (19), and the intermediate portion of brake axle (16) is supported on housing (2) by bearing (18);

The left end of described a plurality of guiding roller bearings (7) all passes through a plurality of bearings (26) installation and is supported in the bearing saddle bore (1a) of end cap (1), and the right-hand member of a plurality of guiding roller bearings (7) all passes through a plurality of bearings (8) installation and is supported in the bearing saddle bore (2a) of housing (2);

The inner (3b) of described rubber tape (3) is placed in inner fixedly punch holder (25) and inner fixedly between die holder (23), and fix to clamp in the inner mounting groove of rubber tape (9a) of cylinder (9) by bolt (24), the intermediate portion of rubber tape (3) supports by a plurality of guiding roller bearings (7), the outer end (3a) of rubber tape (3) is placed in outer end fixedly punch holder (4) and outer end fixedly between die holder (5), and fixes to clamp on the cylinder wall of housing (2) inner chamber by bolt (6);

Described braking device (10) is positioned at the right side of housing (2), by bolt, the braking device housing (11) of braking device (10) is fixedly connected on housing (2), fixedly brake slipper (15) and movable brake slipper (14) lay respectively at the end face both sides of brake disc (19), and fixedly the both ends of the surface of brake slipper (15) and movable brake slipper (14) and brake disc (19) keep respectively the gap of 0.3～0.8 millimeter.

2. rubber belt type accumulator as claimed in claim 1, is characterized in that: described rubber tape (3) is wall scroll rubber tape or many slat gums band.

3. rubber belt type accumulator as claimed in claim 1, is characterized in that: described cylinder (9) is hollow core structure.

4. rubber belt type accumulator as claimed in claim 1, it is characterized in that: the central distribution of the bearing saddle bore (1a) of described end cap (1) be take on the Archimedes spiral that cylinder external diameter is basic circle at one, the central distribution of the bearing saddle bore (2a) of described housing (2) be take on the Archimedes spiral that cylinder external diameter is basic circle at one.

5. rubber belt type accumulator as claimed in claim 1, it is characterized in that: described braking device (10) comprises braking device housing (11), braking clamp body (12) and piston (13), braking clamp body (12) is provided with positioning boss (12a), positioning boss (12a) is Spielpassung with the locating slot (11a) of braking device housing (11), the length of positioning boss (12a) is less than 3～6 millimeters of the length of locating slot (11a), make braking clamp body (12) have the axial clearance of 3～6 millimeters in braking device housing (11), there is guide finger (12b) one end of braking clamp body (12), guide finger (12b) is Spielpassung with the guide pin hole (11b) of braking device housing (11), the other end of braking clamp body (12) has a piston cavity (12d), braking clamp body (12) outer end You Yige UNICOM is to the brake fluid pressure hydraulic fluid port (12c) of piston cavity, piston (13) is arranged in piston cavity (12d), braking clamp body (12) has its inner side, one end of guide finger (12b) to be connected with fixedly brake slipper (15), movable brake slipper (14) is equipped with in one end of stretching out piston cavity (12d) of piston (13).

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