CN110065400B - A buffer stop for new forms of energy battery on new forms of energy car - Google Patents

Abstract

The invention relates to the field of new energy utilization, and discloses an anti-collision device for a new energy battery on a new energy vehicle, which comprises a battery box, wherein the battery box is arranged in a piston frame, one end of the piston frame is inserted into a first air pressure adjusting box and can slide in the first air pressure adjusting box, one end of the piston frame inserted into the first air pressure adjusting box is connected with a first piston head, the first piston head is clamped in the first air pressure adjusting box and clings to the inner wall of a circle of the first air pressure adjusting box, the first piston head can slide from one end in the first air pressure adjusting box to the other end in the inner part of the first air pressure adjusting box, and the first air pressure adjusting box can adjust the air pressure intensity in a closed space formed by the first piston. The device can resist lateral impact, impact in a vehicle flying state and impact in an oblique direction.

Description

An anti-collision device for a new energy battery on a new energy vehicle

technical field

The invention relates to the field of new energy utilization, in particular to an anti-collision device for a new energy battery on a new energy vehicle.

Background technique

For example, Chinese Patent Bulletin No. CN 106098990 B discloses a new energy vehicle, which is used to solve the problem of deformation and explosion of existing battery components during the impact process. It mainly offsets the battery by squeezing and breaking the deformed strip The impact on the components requires consumption of the alloy material used to make the deformed bars, which is expensive, not conducive to repeated use, inconvenient to replace accessories, and the deformed bars are prone to rust and lose their original mechanical properties after a long time. The device of the component can only resist the impact of the car in the forward and backward directions, but cannot resist the impact of the lateral impact, the impact of the car in the state of flying, and the impact of the oblique upward impact on the car.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an anti-collision device that can make the new energy battery resist lateral impact, impact under the state of automobile flying, and impact obliquely upward.

An anti-collision device for a new energy battery on a new energy vehicle, which is adopted to solve the above problem, includes a battery box.

Further, the battery box is placed in the piston rack, one end of the piston rack is inserted into the first air pressure adjustment box, and can slide in the first air pressure adjustment box, and the end of the piston rack inserted into the first air pressure adjustment box is connected with the first piston head. , the first piston head is clamped inside the first air pressure adjustment box, and is close to the inner wall of the first air pressure adjustment box. The first piston head can slide from one end inside the first air pressure adjustment box to the other end inside, and the first air pressure The adjustment box can adjust the air pressure in the closed space formed by the first piston head and the first piston head. The first piston head divides the inside of the first air pressure regulating box into two closed spaces, and the air pressure of the two closed spaces controls the first piston head in a balanced position and will not slide. When the battery box is impacted, the battery box drives the piston. The frame slides toward the first air pressure adjustment box, and the piston frame is slidably inserted at one end of the first air pressure adjustment box, pushing the first piston head to slide. Due to the compressibility of the gas, the first piston head squeezes the sliding direction. In the closed space, the compressed gas will form a high pressure, which will hinder the sliding of the first piston head, which can buffer the impact of the battery box. The formation of low pressure can also hinder the sliding of the first piston head, so that the first piston head can return to the original equilibrium position.

Further, an inner wall of the first air pressure regulating box facing the first piston head is provided with a first elastic member, one end of the first elastic member is connected to the inner wall of the air pressure regulating box, and one end faces the first piston head. The first elastic member can be a spring, which further improves the buffering effect of the first air pressure regulating box, delays the compression speed of the compressed gas, and further hinders the sliding of the first piston head.

Further, a second elastic member is provided on the inner wall of the first air pressure regulating box which is slidably inserted by the piston frame, one end of the second elastic member is connected to the inner wall of the first air pressure regulating box which is slidably inserted by the piston frame, and one end faces the first air pressure regulating box. Piston head. The second elastic member can be pre-pressed, the closed space where the second elastic member is located is adjusted to a low pressure or a negative pressure, the first piston head is adsorbed, the second elastic member supports the first piston head, and keeps the first piston head Balanced so that a portion of the suction is stored and resists shock effects.

A single air pressure regulating box can resist shocks in a corresponding single direction.

Further, the other end of the piston frame is slidably inserted into the second air pressure adjustment box, the inner wall of the second air pressure adjustment box is clamped to the second piston head, the second piston head is close to the inner wall of the second air pressure adjustment box, and the second piston head can be Slide in the second air pressure adjustment box, the first piston head and the second piston head are in contact with the end of the piston frame, the contact parts can be freely separated, the lower part of the piston frame is slidingly connected to the first slideway, the first slideway The two ends are respectively vertically connected to the first air pressure regulating box and the second air pressure regulating box. The piston rack slides on the first slideway, so that the battery box can resist a pair of impacts. Wherever the piston rack moves toward the air pressure regulating box, it squeezes the closed space inside the air pressure regulating box, which is hindered by the compressed gas. , When the impact is eliminated, the battery box can return to the original equilibrium position without damage, or reduce damage, and can still function normally. Moreover, the end of the piston rack can slide out from the air pressure regulating box it is plugged into and slide on the first slideway, which further lengthens the buffering distance, improves the buffering effect, makes the buffering more stable, and further reduces the impact on the battery box. damage.

A pair of air pressure regulating boxes on the same impact line can resist the impact of two opposite directions.

Further, one end of the first sliding rod is vertically connected to the horizontal and vertical side of the first air pressure regulating box, and the other end of the first sliding rod is slidably inserted into the third air pressure regulating box, and is connected with the third air pressure regulating box in the third air pressure regulating box. The three piston heads are connected, and the third piston head can be clamped inside the third air pressure regulating box, and is close to the inner wall of the third air pressure regulating box. Connect with the third air pressure regulating box. In order to resist the impact on the side, an air pressure adjustment box on the action line of the side impact can be added. The second slideway can allow the entire slide of the air pressure adjustment box, battery box and piston frame assembly of the previous stage. The first sliding rod Push the third piston head to squeeze the closed space in the third air pressure adjustment box, so that the gas in the closed space is compressed, and then act in the opposite direction on the third piston head to prevent the third piston head from sliding, so as to complete the lateral one-way Resist shocks.

Further, one end of the second slide bar is vertically connected to the other side of the first air pressure regulation box, the other end of the second slide bar is slidably inserted into the fourth air pressure regulation box, and the fourth air pressure regulation box is clamped inside the box. The fourth piston head, the fourth piston head can slide in the fourth air pressure adjustment box, the other end of the second slideway is connected to the fourth air pressure adjustment box, the first sliding rod is in contact with the third piston head, and the two can be freely separated , the second sliding rod is in contact with the fourth piston head, and the two can be freely separated. The first air pressure regulating box slides on the second slideway. After receiving a lateral impact, the first air pressure regulating box slides toward the third air pressure regulating box, or slides toward the fourth air pressure regulating box, and the first air pressure regulating box The third air pressure regulating box or the fourth air pressure regulating box is obstructed.

Further, the top of the third air pressure regulating box is vertically connected to one end of the third sliding rod, the other end of the third sliding rod is slidably inserted into the fifth air pressure regulating box, and the fifth air pressure regulating box is provided with a fifth piston head, and the fifth The piston head is close to the inner wall of the fifth air pressure adjustment box, the fifth piston head can slide in the fifth air pressure adjustment box, and the fifth piston head and the third sliding rod are in contact with the fifth air pressure adjustment box. Separated from each other, the bottom of the third air pressure regulating box is vertically connected to one end of the fourth sliding rod, and the other end of the fourth sliding rod is slidably inserted into the sixth air pressure regulating box. The sixth air pressure regulating box is provided with a sixth piston head, and the sixth The piston head is close to the inner wall of the sixth air pressure adjustment box, and can slide in the sixth air pressure adjustment box. The fourth sliding rod and the sixth piston head are in contact with the sixth air pressure adjustment box, and the two can be separated from each other. A third slideway is arranged between the fifth air pressure regulation box and the sixth air pressure regulation box, the upper end of the third slideway is connected to the fifth air pressure regulation box, the lower end is connected to the sixth air pressure regulation box, and the third air pressure regulation box is slidably connected to the fifth air pressure regulation box. On the three slides, it can slide vertically along the third slide but not leave the third slide. The fifth air pressure adjustment box and the sixth air pressure adjustment box are used to resist the vertical impact force received by the car in the state of leaping, and the third air pressure adjustment box drives the horizontal components connected to it to make vertical movements on the third slideway. In order to protect the battery box against vertical impact.

Further, the sixth air pressure regulating box is a polygon, the shape of the sixth piston head arranged in the sixth air pressure regulating box is also set as a corresponding polygon, and a pair of the sixth air pressure regulating box is parallel to each other and The horizontal and vertical sides are respectively vertically connected with one end of the fifth sliding rod and one end of the sixth sliding rod, and the other end of the fifth sliding rod is slidingly inserted into the seventh air pressure regulating box, and the seventh air pressure regulating box is provided with a seventh piston The seventh piston head is in close contact with the inner wall of the seventh air pressure adjustment box, the fifth sliding rod and the seventh piston head are in contact with the seventh air pressure adjustment box, and the two can be separated from each other. The other end is slidably connected to the eighth air pressure regulating box. The eighth air pressure regulating box is provided with an eighth piston head. The eighth piston head is close to the inner wall of the eighth air pressure regulating box and can slide in the eighth air pressure regulating box. The eighth piston head and the sixth slide rod are in contact in the eighth air pressure regulating box, and the two can be separated from each other. A fourth slideway is provided between the eighth air pressure regulating box and the seventh One end of the four slideways is connected to the seventh air pressure regulation box, the other end is connected to the eighth air pressure regulation box, and the sixth air pressure regulation box and the fourth slideway are slidingly connected. The seventh air pressure regulating box and the eighth air pressure regulating box are used to resist the oblique impact force. The air pressure adjustment box slides to protect the battery box against diagonal impacts.

As long as a pair of air pressure adjustment boxes are arranged on the action line of any impact force, and other components slide between the pair of air pressure adjustment boxes, so that these components are hindered by compressed gas or springs, they can resist any impact from any impact. Impact on the force line.

The device is beneficial to resist the opposite impact, the lateral impact, the oblique impact and the vertical impact.

Description of drawings

Figure 1 is a schematic diagram of the structure of a single air pressure regulating box

Figure 2 is a schematic diagram of the internal structure of a single air pressure regulating box.

FIG. 3 is a schematic view of the structure in the form of a double air pressure regulating box.

Figure 4 is a schematic structural diagram of the form of four air pressure regulating boxes.

FIG. 5 is a schematic structural diagram of the form of six air pressure regulating boxes.

Figure 6 is a schematic structural diagram in the form of eight air pressure regulating boxes.

Reference signs: 1. Battery box; 2. Piston frame; 3. First air pressure regulating box; 4. First piston head

31. The first elastic part; 32. The second elastic part; 5. The second air pressure regulating box; 6. The second piston head; ; 10, the third piston head; 11, the second slide; 12, the second slide rod; 13, the fourth air pressure adjustment box; 14, the fourth piston head; 15, the third slide rod; 16, the fifth air pressure adjustment box; 17, the fifth piston head; 18, the fourth slide rod; 19, the sixth air pressure adjustment box; 20, the sixth piston head; 21, the third slideway; 22, the fifth slide rod; 23, the sixth slide Rod; 24, the seventh air pressure adjustment box; 25, the seventh piston head; 26, the eighth air pressure adjustment box; 27, the eighth piston head; 28, the fourth slide.

Detailed ways

As shown in Figure 1-6, an anti-collision device for a new energy battery on a new energy vehicle includes a battery box 1.

The battery box 1 is placed in the piston rack 2, one end of the piston rack 2 is inserted into the first air pressure adjustment box 3, and can slide in the first air pressure adjustment box 3, and one end of the piston rack 2 inserted into the first air pressure adjustment box 3 is connected with a The first piston head 4, the first piston head 4 is clamped inside the first air pressure regulating box 3, and is close to the inner wall of a circle of the first air pressure regulating box 3. Sliding to the other end inside, the first air pressure regulating box 3 can adjust the air pressure in the closed space formed by the first piston head 4 and the first piston head 4 . The first piston head 4 divides the inside of the first air pressure regulating box 3 into two closed spaces, and the air pressure of the two closed spaces controls the first piston head 4 in a balanced position and will not slide. When the battery box 1 is impacted, The battery box drives the piston frame 2 to slide toward the first air pressure regulating box 3, and the piston frame 2 is slidably inserted at one end of the first air pressure regulating box 3, and pushes the first piston head 4 to slide. The piston head 4 squeezes the closed space toward which it slides, and the squeezed gas will form a high pressure, which hinders the sliding of the first piston head 4, which can buffer the impact of the battery box 1, and the squeezed closed space is reduced due to , the closed space that is not squeezed increases, forming a low pressure, which can also hinder the sliding of the first piston head 4, so that the first piston head can return to the original equilibrium position.

An inner wall of the first air pressure regulating box 3 facing the first piston head 4 is provided with a first elastic member 31 . The first elastic member 31 can be a spring, which further improves the buffering effect of the first air pressure regulating box 3 , delays the compression speed of the pressurized gas, and further hinders the sliding of the first piston head 4 .

A second elastic member 32 is provided on the inner wall of the first air pressure regulating box 3 which is slidably inserted by the piston frame 2, and one end of the second elastic member 32 is connected to the inner wall of the first air pressure regulating box 3 which is slidably inserted by the piston frame 2, and the other is One end faces the first piston head 4 . The second elastic member 32 can be pre-pressed, the closed space where the second elastic member 32 is located is adjusted to a low pressure or a negative pressure, and the first piston head 4 is adsorbed. The second elastic member 32 supports the first piston head 4 and makes The first piston head 4 is kept in balance, so that a part of the suction force can be stored to resist the impact.

The first air pressure regulating box 3 can resist the impact in its corresponding single direction.

The other end of the piston frame 2 is slidably connected to the second air pressure adjustment box 5, the inner wall of the second air pressure adjustment box 5 is clamped to the second piston head 6, and the second piston head 6 is close to the inner wall of the second air pressure adjustment box 5. The piston head 6 can slide in the second air pressure regulating box 5, the first piston head 4 and the second piston head 6 are in contact with the end of the piston frame 2, the contact parts can be freely separated, and the lower part of the piston frame 2 is slidably connected The first slideway 7, the two ends of the first slideway 7 are respectively vertically connected to the first air pressure regulating box 3 and the second air pressure regulating box 5. The piston rack 2 slides on the first slide 7 so that the battery box 1 can resist a pair of impacts, and the piston rack 2 moves toward the first air pressure regulating box 3 at one end or the second air pressure regulating box 5 at the other end, so that Squeeze the closed space inside the first air pressure regulating box 3 or the second air pressure regulating box 5, which is hindered by the compressed gas. When the impact is eliminated, the battery box 1 can return to the original equilibrium position without damage or reduce damage. , still functioning normally. Moreover, the end of the piston rack 2 can slide out from the first air pressure regulating box 3 or the second air pressure regulating box 5, and slide on the first slideway 7, which further lengthens the buffering distance and improves the buffering effect. As a result, the buffering is more stable, thereby further reducing the damage to the battery case 1 .

The first air pressure regulating box 3 and the second air pressure regulating box 5 on the same impact line can resist the impact of two opposite directions.

One end of the first sliding rod 8 is vertically connected to the horizontal and vertical side of the first air pressure regulating box 3 , and the other end of the first sliding rod 8 is slidably inserted into the third air pressure regulating box 9 , and is in the third pressure regulating box 9 . Connected with the third piston head 10, the third piston head 10 can be clamped inside the third air pressure adjustment box 9, and is close to the inner wall of the third air pressure adjustment box 9, and the first air pressure adjustment box 3 is slidably connected to the second slider. One end of the second slideway 11 is connected to the third air pressure regulating box 9 . In order to resist the impact on the side, a third air pressure regulating box 9 on the action line of the lateral impact is added, and the second slideway can allow the first air pressure regulating box 3 in front and its connected battery box 1 and piston rack 2 The whole assembly slides, the first sliding rod 8 pushes the third piston head 10 to squeeze the closed space in the third air pressure regulating box 9, so that the gas in the closed space is compressed, and then acts on the third piston head 10 in the opposite direction, hindering the The third piston head 10 slides to complete the lateral unidirectional impact resistance.

One end of the second sliding rod 12 is vertically connected to the other side of the first air pressure regulating box 3 , and the other end of the second sliding rod 12 is slidably inserted into the fourth air pressure regulating box 13 . The fourth piston head 14 is clamped, the fourth piston head 14 can slide in the fourth air pressure adjustment box 13 , the other end of the second slideway 11 is connected to the fourth air pressure adjustment box 13 , the first sliding rod 8 and the third piston head 10 In order to abut, the two can be freely separated, and the second sliding rod 12 and the fourth piston head 14 are in abutment, and the two can be freely separated. The first air pressure adjustment box 3 slides on the second slideway 11, and after receiving a lateral impact, the first air pressure adjustment box 3 slides toward the third air pressure adjustment box 9, or toward the fourth air pressure adjustment box 13, the first air pressure adjustment box 3 slides The air pressure regulating box 3 is hindered by the third air pressure regulating box 9 or the fourth air pressure regulating box 13 .

The third air pressure regulating box 9 and the fourth air pressure regulating box 13 on a pair of side impact action lines complete the effect of resisting the side impact.

The top of the third air pressure regulating box 9 is vertically connected to one end of the third sliding rod 15 , and the other end of the third sliding rod 15 is slidably inserted into the fifth air pressure regulating box 16 , and the fifth air pressure regulating box 16 is provided with a fifth piston head 17 , the fifth piston head 17 is close to the inner wall of the fifth air pressure adjustment box 16, the fifth piston head 17 can slide in the fifth air pressure adjustment box 16, the fifth piston head 17 and the third sliding rod 15 are adjusted in the fifth air pressure adjustment box 16 The inside of the box 16 is in contact, and the two can be separated from each other. The bottom of the third air pressure regulating box 9 is vertically connected to one end of the fourth sliding rod 18, and the other end of the fourth sliding rod 18 is slidably inserted into the sixth air pressure regulating box 19. The sixth air pressure regulating box 19 is provided with a sixth piston head 20. The sixth piston head 20 is in close contact with the inner wall of the sixth air pressure regulating box 19 and can slide in the sixth air pressure regulating box 19. The six piston heads 20 are in contact with the sixth air pressure regulating box 19, and the two can be separated from each other. The upper end of 21 is connected to the fifth air pressure regulating box 16, the lower end is connected to the sixth air pressure regulating box 19, and the third air pressure regulating box 9 is slidably connected to the third slideway 21, and can slide vertically along the third slideway 21 but will not be separated from the third slideway 21. Three slides 21. The fifth air pressure regulating box 16 and the sixth air pressure regulating box 19 are used to resist the vertical impact force received by the vehicle in the state of leaping, and the third air pressure regulating box 9 drives the horizontal components connected to it on the third slideway 21. Do vertical movement to protect the battery box 1 against vertical impact.

The sixth air pressure regulating box 19 is polygonal, the shape of the sixth piston head 20 arranged in the sixth air pressure regulating box 19 is also set as a corresponding polygon, and a pair of the sixth air pressure regulating box 19 is parallel to each other and perpendicular to the horizontal direction The side of the fifth slide bar 22 and one end of the sixth slide bar 23 are respectively vertically connected, and the other end of the fifth slide bar 22 is slidably inserted into the seventh air pressure regulating box 24. Seven piston heads 25, the seventh piston head 25 is close to the inner wall of the seventh air pressure regulating box 24, the fifth sliding rod 22 and the seventh piston head 25 are in contact with the seventh air pressure regulating box 24, and the two can be separated from each other , the other end of the sixth sliding rod 23 is slidably inserted into the eighth air pressure regulating box 26, the eighth air pressure regulating box 26 is provided with an eighth piston head 27, and the eighth piston head 27 is close to the inner wall of the eighth air pressure regulating box 26. , and can slide in the eighth air pressure adjustment box 26, the eighth piston head 27 and the sixth sliding rod 23 are in contact with the eighth air pressure adjustment box 26, and the two can be separated from each other, and the eighth air pressure adjustment box 26 and the sixth sliding rod 23 are in contact with each other. A fourth slideway 28 is provided between the seventh air pressure regulating box 24. One end of the fourth slideway 28 is connected to the seventh air pressure regulating box 24, and the other end is connected to the eighth air pressure regulating box 26. The sixth air pressure regulating box 19 is connected to the fourth slideway. Track 28 is a sliding connection. The seventh air pressure adjustment box 24 and the eighth air pressure adjustment box 26 are used to resist the oblique impact force, and the sixth air pressure adjustment box 19 drives other components connected to it to adjust obliquely toward the seventh air pressure on the fourth slideway 28 The box 24 or the eighth air pressure regulating box 26 slides to protect the battery box against the oblique impact force.

The multi-deformable sixth air pressure regulating box 19 has multiple inclined surfaces, which can be used to resist the impact force on the action line of the impact force from multiple angles.

As long as a pair of air pressure adjustment boxes are arranged on the action line of any impact force, and other components slide between the pair of air pressure adjustment boxes, so that these components are hindered by compressed gas or springs, they can resist any impact from any impact. Impact on the force line.

Other accessories on the new energy vehicle connected to the battery box 1 can be installed outside the impact line, or an isolation plate can be installed to reserve wiring holes to isolate the battery box 1 from other accessories.

The device utilizes the compressibility of the gas and the elasticity of the spring, and can achieve the effect of buffering resistance to the opposite impact, lateral impact, oblique impact and vertical impact, and as long as a certain degree of impact force is not too large , it will not damage the device, it can still be reused after being impacted, and it is more convenient to replace accessories.

Claims (1)

1. An anti-collision device for a new energy battery on a new energy vehicle, comprising a battery box (1), the battery box (1) being placed in a piston frame (2), one end of the piston frame (2) The first air pressure regulating box (3) is inserted into the first air pressure regulating box (3) and can slide in the first air pressure regulating box (3). (4), the first piston head (4) is clamped inside the first air pressure regulating box (3), and is close to the inner wall of a circle of the first air pressure regulating box (3), the first piston head (4) It can slide from one end inside the first air pressure regulating box (3) to the other end inside, and the first air pressure regulating box (3) can adjust the air pressure in the closed space formed by the first piston head (4) and it. The inner wall of the first air pressure regulating box (3) facing the first piston head (4) is provided with a first elastic member (31), and one end of the first elastic member (31) is connected to the air pressure regulating box ( 3) The inner wall, the other end of which faces the first piston head (4), and the inner wall of the first air pressure regulating box (3) that is slidably inserted by the piston frame (2) is provided with a second elastic member (32), One end of the second elastic member (32) is connected to the inner wall of the first air pressure regulating box (3) which is slidably inserted by the piston frame (2), and the other end faces the first piston head (4). The other end of the frame (2) is slidably inserted into the second air pressure regulating box (5), the inner wall of the second air pressure regulating box (5) is clamped to the second piston head (6), and the second piston head (6) is tightly A circle is attached to the inner wall of the second air pressure adjustment box (5), the second piston head (6) can slide in the second air pressure adjustment box (5), the first piston head (4) and the second piston The head (6) is in contact with the end of the piston rack (2), and the contacting parts can be separated freely. The two ends of the passage (7) are respectively vertically connected to the first air pressure regulating box (3) and the second air pressure regulating box (5), and the first air pressure regulating box (3) is vertically connected to the horizontal and vertical side of the first sliding plate. One end of the rod (8), the other end of the first sliding rod (8) is slidably inserted into the third air pressure regulating box (9), and is connected with the third piston head (10) in the third pressure regulating box (9) , the third piston head (10) can be clamped inside the third air pressure regulating box (9), and is in close contact with the inner wall of the third air pressure regulating box (9), under the first air pressure regulating box (3) A second slideway (11) is slidably connected, one end of the second slideway (11) is connected to the third air pressure regulating box (9), and the other side of the first air pressure regulating box (3) is horizontal and vertical One end of the second sliding rod (12) is vertically connected, and the other end of the second sliding rod (12) is slidably inserted into the fourth air pressure regulating box (13), and the fourth air pressure regulating box (13) is clamped to the fourth piston head (14), the fourth piston head (14) can slide in the fourth air pressure regulation box (13), the other end of the second slideway (11) is connected to the fourth air pressure regulation box (13), the The first slide bar (8) and the The third piston head (10) is in abutment, and the two can be freely separated. The second sliding rod (12) is in abutment with the fourth piston head (14), and the two can be freely separated. The top of the air pressure regulating box (9) is vertically connected to one end of the third sliding rod (15), and the other end of the third sliding rod (15) is slidably inserted into the fifth air pressure regulating box (16), and the fifth air pressure regulating box ( 16) There is a fifth piston head (17) inside, the fifth piston head (17) is close to the inner wall of the fifth air pressure regulating box (16), and the fifth piston head (17) can be adjusted in the fifth air pressure. The adjustment box (16) slides, and the fifth piston head (17) and the third sliding rod (15) are in contact with the fifth air pressure adjustment box (16), and the two can be separated from each other, so The bottom of the third air pressure regulating box (9) is vertically connected to one end of the fourth sliding rod (18), and the other end of the fourth sliding rod (18) is slidably inserted into the sixth air pressure regulating box (19). A sixth piston head (20) is arranged inside the six air pressure regulating box (19), and the sixth piston head (20) is in close contact with the inner wall of the sixth air pressure regulating box (19), and can be installed in the sixth air pressure regulating box (19). 19), the fourth sliding rod (18) and the sixth piston head (20) are in contact with the sixth air pressure regulating box (19), and the two can be separated from each other. A third slideway (21) is arranged between the regulating box (16) and the sixth air pressure regulating box (19), the upper end of the third slideway (21) is connected to the fifth air pressure regulating box (16), and the lower end is connected to the sixth air pressure regulating box (16) An air pressure regulating box (19), the third air pressure regulating box (9) is slidably connected to the third slideway (21), and can slide vertically along the third slideway (21) but will not be separated from the third slideway ( 21), the sixth air pressure regulating box (19) is a polygon, and the shape of the sixth piston head (20) arranged in the sixth air pressure regulating box (19) is also set to a corresponding polygon, and the sixth A pair of mutually parallel and horizontal vertical sides of the air pressure regulating box (19) are respectively vertically connected with one end of the fifth sliding rod (22) and one end of the sixth sliding rod (23). The other end of 22) is slidably connected to the seventh air pressure regulating box (24), and the seventh air pressure regulating box (24) is provided with a seventh piston head (25), and the seventh piston head (25) is in close contact with the seventh air pressure regulating box (24). The inner wall of the seventh air pressure regulating box (24) is one circle, and the fifth sliding rod (22) and the seventh piston head (25) are in contact with each other inside the seventh air pressure regulating box (24). separation, the other end of the sixth sliding rod (23) is slidably inserted into the eighth air pressure regulating box (26), the eighth air pressure regulating box (26) is provided with an eighth piston head (27), and the The eighth piston head (27) is in close contact with the inner wall of the eighth air pressure regulating box (26) and can slide in the eighth air pressure regulating box (26). The eighth piston head (27) is connected to the sixth sliding rod (23). ) is in contact with the eighth air pressure regulating box (26), the two can be separated from each other, between the eighth air pressure regulating box (26) and the seventh air pressure regulating box (24) A fourth slideway (28) is provided, one end of the fourth slideway (28) is connected to the seventh air pressure regulation box (24), the other end is connected to the eighth air pressure regulation box (26), and the sixth air pressure regulation box (26) is connected at the other end. The air pressure regulating box (19) is slidably connected with the fourth slideway (28).

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