CN110513431A - A kind of magnetoelectricity mix suspending formula hydraulic damper - Google Patents

Abstract

The invention belongs to the field of hydraulic dampers, specifically a magnetic-electric hybrid suspension hydraulic damper, comprising a piston rod, an inner cylinder, an outer cylinder and a damping control valve; The inner cylinders are fixedly connected by the cylinder head; the inner cylinder is slidably connected with a piston head, and one end of the piston head is provided with a piston rod; the inner cylinder and the outer cylinder are filled with hydraulic oil; the bottom of the inner cylinder is passed through The flow limiting hole and the damping control valve are connected with the outer cylinder, and the damping control valve is controlled by the controller; the invention controls the adjusting spool of the damping control valve through the controller after the displacement detected by the displacement sensor, and then controls the hydraulic oil in the damper The effect of adjustable damping can be achieved by repeating the flow speed in the inner cylinder and outer cylinder. The stiffness and damping of the hydraulic damper can be adjusted in real time within one millisecond according to the position, achieving the effect of rapid shock absorption.

Description

A magnetic-electric hybrid suspension hydraulic damper

technical field

The invention belongs to the field of hydraulic dampers, in particular to a magnetic-electric hybrid suspension hydraulic damper.

Background technique

As a device to provide motion damping and consume motion energy, the damper is widely used in automobiles, aerospace and other fields. Commonly used dampers include hydraulic dampers, air dampers, and electromagnetic dampers. Although these dampers can adjust the damping effect, they cannot achieve the effect of simultaneously adjusting stiffness and damping, so the application range has certain limitations. .

A magnetic-electric hybrid suspension hydraulic damper is based on the electromagnetic principle, and a magnetic-electric hybrid suspension structure is added to the hydraulic damper for the first time. After the electromagnet is connected to the current, changing the direction and magnitude of the current can change the magnetic pole and magnetic strength of the electromagnet, and continuously adjust the force between the electromagnet and the permanent magnet to adjust the stiffness of the hydraulic damper. When the electromagnet vibrates, the hydraulic oil in the damper is subjected to pressure to flow repeatedly in the inner cylinder and the outer cylinder, and a damping force will be generated when passing through the damping control valve. Adjustable damping can be achieved by adjusting the valve core. This structure overcomes the limitation of single control, and can adjust the stiffness and damping simultaneously according to the situation, which greatly improves the adjustability and adaptability of the system.

Contents of the invention

In order to make up for the deficiencies of the existing technology, the commonly used dampers include hydraulic dampers, air dampers and electromagnetic dampers. Although these dampers can adjust the damping, they cannot achieve the effect of simultaneously adjusting the stiffness and damping. Problem, the present invention proposes a magnetic-electric hybrid suspension hydraulic damper.

The technical solution adopted by the present invention to solve the technical problem is: a magnetic-electric hybrid suspension hydraulic damper according to the present invention, comprising an upper support, a piston rod, an outer sealing ring, a cylinder head, an inner cylinder, an outer cylinder, A damping control valve and a lower support; the outer cylinder is lined with an inner cylinder, and the outer cylinder and the inner cylinder are fixedly connected by a cylinder head; the inner cylinder is slidably connected to a piston head, and one end of the piston head is provided with a piston rod The end of the piston rod away from the piston head is fixedly connected with an upper support, and the upper support is sleeved on the car body; the bottom of the outer cylinder is provided with a lower support, and the lower support is sleeved on the wheel; the outer seal The ring is located between the cylinder head and the piston rod, and the inner cylinder and the outer cylinder are filled with hydraulic oil; the bottom of the inner cylinder communicates with the outer cylinder through a flow limiting hole and a damping control valve, and the damping control valve is controlled by a controller; When the piston rod moves, the hydraulic oil can flow through the damping control valve in the inner cylinder and the outer cylinder, and can provide damping force when passing through the damping hole in the damping control valve; on the piston rod between the upper support and the cylinder head A fixed frame is fixed; one side of the outer cylinder is provided with a suspension fixed to the frame, and the suspension is connected to the fixed frame through a connecting rod; a displacement sensor is fixedly connected to the suspension, and the displacement sensor is connected to the controller through wires Electrical connection; when the vehicle is running on the road, the upper support of the damper is connected to the vehicle body, and the lower support is connected to the wheel. When the vehicle body vibrates, the piston rod and the piston head slide back and forth in the inner cylinder, and the hydraulic oil in the damper is under pressure The repeated flow in the inner cylinder and the outer cylinder will generate a damping force when passing through the damping control valve. Adjusting the valve core can achieve the effect of adjustable damping. The stiffness and damping of the damper can be measured within one millisecond according to the displacement detected by the displacement sensor. Make real-time adjustments to achieve fast shock absorption.

Preferably, the piston head is provided with an electromagnet, and the electromagnet is connected to the controller and the power supply through the wire in the upper end of the piston rod. The electromagnet has magnetism when it is energized, and the magnetic pole and strength of the magnetism can be changed by changing the magnitude and direction of the current. ; An inner sealing ring is provided between the electromagnet and the piston rod; a permanent magnet is fixedly connected to the bottom of the inner cylinder, and a hole is opened in the middle to facilitate the flow of hydraulic oil; There is a set of springs, which are used for buffering when the power is off; the piston head is manufactured in sections and connected by bolts. The piston rod connected to the upper support will drive the electromagnet to vibrate, and the displacement sensor is used to sense the vibration direction of the piston rod. When the electromagnet vibrates upward, according to the electromagnetic principle, the permanent magnet located below the electromagnet needs to generate an attractive force to suppress the vibration, adjust the direction of the current flowing into the electromagnet coil, so that the magnetic poles of the electromagnet and the opposite surface of the permanent magnet are opposite, and the vibration displacement The larger the input current, the greater the upward vibration of the piston rod and the electromagnet can be suppressed by adjusting the magnitude of the electromagnetic attraction force; The direction of the current in the iron coil makes the magnetic poles of the opposite surface of the electromagnet and the permanent magnet the same. The greater the vibration displacement, the greater the current flowing in. By adjusting the magnitude of the electromagnetic repulsion force, the downward vibration trend of the piston rod and the electromagnet can be suppressed, and the rigidity can be achieved. To adjust the effect, the spring between the piston head and the permanent magnet can play a buffer role when the power is off.

Preferably, the piston rod is slidably connected to the piston head, and a set of sliding holes is provided in the piston head; a support block is slidably connected to the sliding hole, and the support block and the piston rod are hinged through a connecting rod. When moving, the connecting rod pushes the support block toward the inner wall of the inner cylinder, increasing the friction between the piston head and the inner cylinder; when the wheel drives the lower support and then drives the piston rod to move downward, the piston rod pushes the connecting rod , and then push the support block to the direction close to the inner wall of the inner cylinder, and press the inner wall of the inner cylinder after the support block contacts the inner cylinder, increase the friction force between the inner cylinder and the support block, and increase the friction force between the piston head and the inner cylinder , so as to further increase the resistance of the movement of the piston rod, and achieve a very good shock-absorbing effect.

Preferably, a set of grooves is provided on the end of the support block close to the inner wall of the inner cylinder, and a rubber bowl is fixedly connected in the groove, and the rubber bowl is used for sucking the inner wall of the inner cylinder when the piston head slides upward; when the piston rod moves downward, The rubber bowl is close to the inner cylinder, which increases the friction between the piston head and the inner cylinder. When the piston rod moves upwards, the piston rod drives the connecting rod and the support rod to move away from the inner wall of the inner cylinder. At this time, the opening of the rubber bowl and the inner cylinder The inner wall forms a negative pressure chamber, and the rubber bowl is sucked on the inner wall of the inner cylinder, which increases the resistance of the piston rod moving upwards and further increases the shock absorption effect of the damper.

Preferably, the end of the piston head away from the piston rod is fixedly connected with a push rod, and the diameter of the push rod is smaller than the diameter of the restrictor hole; the part of the push rod near the restrictor hole is provided with a group of elastic oil resistance rings, and the diameter of the oil resistance ring is slightly larger than The diameter of the restricting hole, and the distance between adjacent oil-restricting rings is greater than the depth of the restricting hole; the upper edge of the restricting hole is provided with arc chamfering; when the oil-restricting ring enters the restricting hole with the push rod, the piston The movement resistance of the rod; when the piston head moves down and approaches the bottom of the inner cylinder, the push rod is inserted into the restrictor hole, further reducing the flow of hydraulic oil in the restrictor hole, increasing the reaction force of the hydraulic oil in the inner cylinder to the piston head, Avoid the rapid movement of the piston head to the bottom and damage the piston head and permanent magnet. When the push rod continues to be inserted into the flow limiting hole, the oil resistance ring is embedded in the flow limiting hole, further increasing the reaction force of the hydraulic oil in the inner cylinder to the piston head, and at the same time Since the distance between adjacent oil resistance rings is greater than the depth of the restrictor hole, when the lower oil resistance ring passes through the restrictor hole, the hydraulic oil in the inner cylinder can continue to flow into the outer cylinder through the restrictor hole. The orifice allows the hydraulic oil to pass through the restricting hole intermittently, further increasing the damping effect of the damper. The circular chamfering on the upper edge of the restricting hole can reduce the wear of the oil resistance ring and increase the service life of the oil resistance ring.

Preferably, one end of the support block close to the piston rod is provided with a buffer cavity, and a sliding column is slidably connected to the buffer cavity; the end of the sliding column located outside the buffer cavity is hinged to the connecting rod; the oil blocking ring is a hollow structure, The cavity in the oil-repelling ring communicates with the buffer chamber through a pipe; the compressed gas generated by the sliding column extruding the buffer chamber is filled into the cavity of the oil-repelling ring, further increasing the friction between the oil-repelling ring and the flow-restricting hole; After the piston rod pushes the connecting rod, it passes through the transmission of the sliding column and the buffer chamber, and finally pushes the support block against the inner wall of the inner cylinder. When the thrust of the piston rod is transmitted to the sliding column, the sliding column squeezes the air in the buffering cavity to avoid transmission from the connecting rod. The thrust of the thrust directly acts on the support block, causing the support block to impact the inner cylinder and damage the inner cylinder; at the same time, the compressed gas generated in the buffer chamber is filled into the oil resistance ring through the pipeline, which makes the volume of the oil resistance ring expand and further increases the oil resistance of the oil resistance ring. The tightness and friction with the restrictor hole further increase the damping effect of the damper.

The beneficial effects of the present invention are as follows:

1. A magnetic-electric hybrid suspension hydraulic damper according to the present invention, after the displacement detected by the displacement sensor, the controller controls the adjusting spool of the damping control valve, and then controls the hydraulic oil in the damper to be connected to the inner cylinder. The effect of adjustable damping can be achieved by repeating the flow speed in the outer cylinder. The stiffness and damping of the hydraulic damper can be adjusted in real time within one millisecond according to the position, achieving the effect of rapid shock absorption.

2. A magnetic-electric hybrid suspension type hydraulic damper of the present invention senses the vibration direction of the piston rod through a displacement sensor. When the piston rod and the electromagnet vibrate upwards, the direction of the current passing into the electromagnet coil is adjusted so that the electromagnet Contrary to the magnetic poles on the opposite surface of the permanent magnet, the greater the vibration displacement, the greater the current that is passed through. By adjusting the magnitude of the electromagnetic attraction force, the upward vibration trend of the piston rod and the electromagnet is suppressed; when the piston rod and the electromagnet vibrate downward, the adjustment of the electromagnetic force The direction of the current in the iron coil makes the magnetic poles of the opposite surface of the electromagnet and the permanent magnet the same. The greater the vibration displacement, the greater the current flowing in. By adjusting the magnitude of the electromagnetic repulsion force, the downward vibration trend of the piston rod and the electromagnet can be suppressed, and the rigidity can be achieved. tuning effect.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is the front view of the present invention;

Fig. 2 is the sectional view of outer cylinder of the present invention;

Fig. 3 is a partial enlarged view of A in Fig. 2;

Fig. 4 is a partial enlarged view of place B in Fig. 2;

In the figure: upper support 1, piston rod 2, outer sealing ring 3, cylinder head 4, inner cylinder 5, outer cylinder 6, spring 7, damping control valve 8, lower support 9, piston head 10, flow limiting hole 11 , fixed frame 12, suspension 14, connecting rod 13, displacement sensor 15, electromagnet 16, wire 17, permanent magnet 18, sliding hole 19, support block 20, connecting rod 21, rubber bowl 22, push rod 23, oil resistance ring 24, buffer cavity 25, sliding column 26.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Figures 1 to 4, a magnetic-electric hybrid suspension hydraulic damper according to the present invention includes an upper support 1, a piston rod 2, an outer sealing ring 3, a cylinder head 4, an inner cylinder 5, an outer cylinder 6. The damping control valve 8 and the lower support 9; the outer cylinder 6 is lined with an inner cylinder 5, and the outer cylinder 6 and the inner cylinder 5 are fixedly connected by the cylinder head 4; the inner cylinder 5 is slidingly connected with a piston Head 10, one end of the piston head 10 is provided with a piston rod 2; the end of the piston rod 2 away from the piston head 10 is fixedly connected with an upper support 1, and the upper support 1 is set on the car body; the bottom of the outer cylinder 6 is provided with There is a lower support 9, and the lower support 9 is set on the wheel; the outer sealing ring 3 is located between the cylinder head 4 and the piston rod 2, and the inner cylinder 5 and the outer cylinder 6 are filled with hydraulic oil; The bottom of the inner cylinder 5 communicates with the outer cylinder 6 through the flow limiting hole 11 and the damping control valve 8, and the damping control valve 8 is controlled by the controller; when the piston rod 2 moves, the hydraulic oil can pass through the inner cylinder 5 and the outer cylinder 5 through the damping control valve 8. The flow in the cylinder 6 can provide damping force when passing through the damping hole in the damping control valve 8; the piston rod 2 between the upper support 1 and the cylinder head 4 is fixedly connected with a fixed frame 12; the outer cylinder 6 One side is provided with the suspension 14 that is fixedly connected with the vehicle frame, and the suspension 14 is connected with the fixed frame 12 by a connecting rod 13; the suspension 14 is fixedly connected with a displacement sensor 15, and the displacement sensor 15 is electrically connected with the controller through an electric wire; When the vehicle is running on the road, the upper support 1 of the damper is connected to the vehicle body, and the lower support 9 is connected to the wheels. When the vehicle body vibrates, the piston rod 2 and the piston head 10 slide back and forth in the inner cylinder 5, and the hydraulic oil in the damper is affected. The pressure acts on the inner cylinder 5 and the outer cylinder 6 to flow repeatedly, and a damping force will be generated when passing through the damping control valve 8. Adjusting the valve core can achieve the effect of adjustable damping. The stiffness and damping of the damper are detected by the displacement sensor 15. The displacement can be adjusted in real time within one millisecond to achieve fast shock absorption.

As an embodiment of the present invention, the piston head 10 is provided with an electromagnet 16, and the electromagnet 16 is connected with the controller and the power supply through the wire 17 in the upper end of the piston rod 2. When electrified, the electromagnet 16 has magnetism and changes the current Size, direction can change the magnetic pole and strength of magnetism; An inner sealing ring is provided between the electromagnet 16 and the piston rod 2; The bottom of the inner cylinder 5 is fixedly connected with a permanent magnet 18, and there is a hole in the middle, so that for the flow of hydraulic oil; a group of springs 7 are provided between the piston head 10 and the permanent magnet 18, and the springs 7 are used for buffering when the power is cut off; the piston head 10 is manufactured in sections, bolted, and connected to the upper The piston rod 2 of the seat 1 will drive the electromagnet 16 to vibrate, and the displacement sensor 15 is used to sense the vibration direction of the piston rod 2. When the piston rod 2 and the electromagnet 16 vibrate upward, according to the electromagnetic principle, the permanent magnet 18 located below the electromagnet 16 needs to generate Attractive force is used to suppress vibration, adjust the direction of the current passing into the coil of electromagnet 16, so that the magnetic poles of electromagnet 16 and the opposite surface of permanent magnet 18 are opposite, the greater the vibration displacement is, the greater the current is, and the piston is suppressed by adjusting the magnitude of electromagnetic attractive force. Rod 2 and electromagnet 16 vibrate upward; when piston rod 2 and electromagnet 16 vibrate downward, permanent magnet 18 needs to produce repulsive force to suppress the vibration, and adjust the direction of the current passing into the coil of electromagnet 16, so that electromagnet 16 The same as the magnetic poles on the opposite surface of the permanent magnet 18, the greater the vibration displacement, the greater the current flow, and the downward vibration trend of the piston rod 2 and the electromagnet 16 can be suppressed by adjusting the magnitude of the electromagnetic repulsion force, so as to achieve the effect of adjustable stiffness. The spring 7 located between the piston head 10 and the permanent magnet 18 can play a buffering role.

As an embodiment of the present invention, the piston rod 2 is slidably connected with the piston head 10, and a group of sliding holes 19 are arranged in the piston head 10; a support block 20 is slidably connected with the piston head 19, and the support block 20 is connected with the piston The rods 2 are hinged by a connecting rod 21, and when the piston rod 2 moves downward, the support block 20 is pushed out toward the inner wall of the inner cylinder 5 through the connecting rod 21 to increase the frictional force between the piston head 10 and the inner cylinder 5 ; when the wheel drives the lower support 9 and then drives the piston rod 2 to move downward, the piston rod 2 pushes the connecting rod 21, and then the support block 20 is pushed out toward the direction close to the inner wall of the inner cylinder 5, after the support block 20 contacts the inner cylinder 5 Compress the inner wall of the inner cylinder 5, increase the friction force between the inner cylinder 5 and the support block 20, increase the friction force between the piston head 10 and the inner cylinder 5, thereby further increasing the resistance of the piston rod 2 movement, and achieve a good calculation. Shock effect.

As an embodiment of the present invention, a set of grooves is provided on the end of the support block 20 close to the inner wall of the inner cylinder 5, and a rubber bowl 22 is fixedly connected in the groove, and the rubber bowl 22 is used for sucking the piston head 10 when it slides upwards. The inner wall of the inner cylinder 5; when the piston rod 2 moves downward, the rubber bowl 22 is close to the inner cylinder 5, which increases the friction between the piston head 10 and the inner cylinder 5, and when the piston rod 2 moves upward, the piston rod 2 drives the connecting rod 21 and The strut moves away from the inner wall of the inner cylinder 5. At this time, the opening of the rubber bowl 22 and the inner wall of the inner cylinder 5 form a negative pressure chamber, and the rubber bowl 22 is sucked on the inner wall of the inner cylinder 5, which increases the resistance of the piston rod 2 to move upward. , to further increase the damping effect of the damper.

As an embodiment of the present invention, the end of the piston head 10 away from the piston rod 2 is fixedly connected with a push rod 23, and the diameter of the push rod 23 is smaller than the diameter of the flow limiting hole 11; A group of elastic oil blocking rings 24, the diameter of the oil blocking ring 24 is slightly larger than the diameter of the flow limiting hole 11, and the distance between adjacent oil blocking rings 24 is greater than the depth of the flow limiting hole 11; the upper edge of the flow limiting hole 11 is provided with a circle Arc chamfering; when the oil resistance ring 24 enters the restricting hole 11 with the push rod 23, the movement resistance of the piston rod 2 is increased; when the piston head 10 moves down and approaches the bottom of the inner cylinder 5, the push rod 23 is inserted into the restricting hole 11 In this process, the flow rate of the hydraulic oil in the restrictor hole 11 is further reduced, the reaction force of the hydraulic oil in the inner cylinder 5 to the piston head 10 is increased, and the rapid movement of the piston head 10 is prevented from bottoming out, which may damage the piston head 10 and the permanent magnet 18. When the rod 23 continues to be inserted into the restrictor hole 11, the oil resistance ring 24 is embedded in the restrictor hole 11, which further increases the reaction force of the hydraulic oil in the inner cylinder 5 to the piston head 10, and at the same time due to the distance between the adjacent oil resistance rings 24 Greater than the depth of the flow limiting hole 11, when the lower oil blocking ring 24 passes through the flow limiting hole 11, the hydraulic oil in the inner cylinder 5 can continue to flow into the outer cylinder 6 through the flow limiting hole 11, and the oil blocking ring 24 cooperates with the flow limiting hole 11 The hydraulic oil is intermittently passed through the restricting hole 11 to further increase the damping effect of the damper. The circular chamfering provided on the upper edge of the restricting hole 11 can reduce the wear of the oil blocking ring 24 and increase the service life of the oil blocking ring 24 .

As an embodiment of the present invention, one end of the support block 20 close to the piston rod 2 is provided with a buffer cavity 25, and a sliding column 26 is slidably connected to the buffer cavity 25; The connecting rod 21 is hinged; the oil blocking ring 24 is a hollow structure, and the cavity in the oil blocking ring 24 communicates with the buffer chamber 25 through a pipeline; In the cavity, further increase the friction between the oil resistance ring 24 and the restrictor hole 11; after the downward piston rod 2 pushes the connecting rod 21, it passes through the transmission of the sliding column 26 and the buffer chamber 25, and finally pushes the support block 20 against the inner cylinder 5 inner wall, when the thrust of the piston rod 2 is transmitted to the spool 26, the spool 26 squeezes the air in the buffer chamber 25 to prevent the thrust from the connecting rod 21 from directly acting on the support block 20, causing the support block 20 to impact the inner cylinder 5. Damage the inner cylinder 5; at the same time, the compressed gas generated in the buffer chamber 25 is filled into the oil resistance ring 24 through the pipeline, so that the volume of the oil resistance ring 24 expands, which further increases the sealing performance of the oil resistance ring 24 and the flow limiting hole 11 friction, further increasing the damping effect of the damper.

When working, the vehicle is running on the road, the upper support 1 of the damper is connected to the vehicle body, and the lower support 9 is connected to the wheels. When the vehicle body vibrates, the piston rod 2 and the piston head 10 slide back and forth in the inner cylinder 5, and the The hydraulic oil flows repeatedly in the inner cylinder 5 and the outer cylinder 6 under the action of pressure, and will generate damping force when passing through the damping control valve 8, and the effect of adjustable damping can be achieved by adjusting the valve core. The stiffness and damping of the damper are determined according to the displacement sensor 15 The detected displacement can be adjusted in real time within one millisecond to achieve the effect of rapid shock absorption; the plug head 10 is manufactured in sections and connected by bolts, and the piston rod 2 connected to the upper support 1 will drive the electromagnet 16 to vibrate, and utilize the displacement The sensor 15 senses the vibration direction of the piston rod 2, and when the piston rod 2 and the electromagnet 16 vibrate upwards, according to the electromagnetic principle, the permanent magnet 18 positioned under the electromagnet 16 needs to generate an attractive force to suppress the vibration, and adjust the current that passes into the electromagnet 16 coils. The direction of the current is to make the electromagnet 16 and the magnetic poles of the opposite surface of the permanent magnet 18 opposite, the greater the vibration displacement, the greater the current, and the upward vibration trend of the piston rod 2 and the electromagnet 16 is suppressed by adjusting the size of the electromagnetic attraction force; When the electromagnet 16 vibrates downward, the permanent magnet 18 needs to produce a repulsive force to suppress the vibration, adjust the direction of the current passing into the coil of the electromagnet 16, so that the magnetic poles of the electromagnet 16 and the opposite surface of the permanent magnet 18 are the same, and the larger the vibration displacement, the greater the current flow. The greater the size, the downward vibration of the piston rod 2 and the electromagnet 16 is suppressed by adjusting the magnitude of the electromagnetic repulsion force, and the effect of adjustable stiffness is achieved. The spring 7 between the piston head 10 and the permanent magnet 18 can be play a buffering role; when the wheel drives the lower support 9 and then drives the piston rod 2 to move downward, the piston rod 2 pushes the connecting rod 21, and then pushes the support block 20 to the direction close to the inner wall of the inner cylinder 5, and the support block 20 and the inner cylinder 5 After cylinder 5 contacts, press the inner wall of inner cylinder 5, increase the friction force between inner cylinder 5 and support block 20, increase the friction force between piston head 10 and inner cylinder 5, thereby further increase the resistance of piston rod 2 movement, reach Good anti-shock effect; when the piston rod 2 moves downward, the rubber bowl 22 is close to the inner cylinder 5, which increases the friction between the piston head 10 and the inner cylinder 5, and when the piston rod 2 moves upward, the piston rod 2 drives the connecting rod The rod 21 and the strut move away from the inner wall of the inner cylinder 5. At this time, the opening of the rubber bowl 22 and the inner wall of the inner cylinder 5 form a negative pressure chamber, and the rubber bowl 22 is sucked on the inner wall of the inner cylinder 5, increasing the piston rod 2 upward The resistance of the movement further increases the damping effect of the damper; when the piston head 10 moves downward and approaches the bottom of the inner cylinder 5, the push rod 23 is inserted into the restrictor hole 11, further reducing the flow of hydraulic oil in the restrictor hole 11, increasing The reaction force of the hydraulic oil in the large inner cylinder 5 to the piston head 10 prevents the piston head 10 from rapidly moving and bottoming out, and damages the piston head 10 and the permanent magnet 18. In the restrictor hole 11, the reaction force of the hydraulic oil in the inner cylinder 5 to the piston head 10 is further increased. At the same time, since the distance between the adjacent oil resistance rings 24 is greater than the depth of the restrictor hole 11, when the lower oil resistance ring 24 passes through After the restrictor hole 11, in the inner cylinder 5 The hydraulic oil can continue to flow into the outer cylinder 6 through the flow limiting hole 11, and the oil blocking ring 24 cooperates with the flow limiting hole 11 to make the hydraulic oil intermittently pass through the flow limiting hole 11, further increasing the damping effect of the damper. The chamfering along the set arc can reduce the wear of the oil-repelling ring 24 and increase the service life of the oil-repelling ring 24; the connecting rod 21 is pushed by the downward piston rod 2 and then driven by the sliding column 26 and the buffer chamber 25, and finally pushes the support The block 20 is against the inner wall of the inner cylinder 5, and when the thrust of the piston rod 2 is transmitted to the spool 26, the spool 26 squeezes the air in the buffer cavity 25, so as to prevent the thrust from the connecting rod 21 from directly acting on the support block 20, resulting in The support block 20 impacts the inner cylinder 5 and damages the inner cylinder 5; at the same time, the compressed gas generated in the buffer chamber 25 is filled into the oil resistance ring 24 through the pipeline, so that the volume of the oil resistance ring 24 expands, further increasing the oil resistance ring 24 and the current limiting The tightness and friction of the hole 11 further increase the damping effect of the damper.

The above-mentioned front, back, left, right, up, and down are all based on Figure 1 in the accompanying drawings of the specification, and according to the viewing angle of the person as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left. And so on.

In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the Means that a device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of the invention.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. a kind of magnetoelectricity mix suspending formula hydraulic damper, it is characterised in that: including upper bracket (1), piston rod (2), external seal Enclose (3), cylinder cap (4), inner casing (5), outer shell (6), damping control valve (8) and undersetting (9)；Inner casing is cased in the outer shell (6) (5), it is connected between outer shell (6) and inner casing (5) by cylinder cap (4)；It is slidably connected piston head (10) in the inner casing (5), it is living One end of chock plug (10) is equipped with piston rod (2)；The piston rod (2) is fixed with upper bracket (1) far from the one end of piston head (10), Upper bracket (1) covers on the car body；Outer shell (6) bottom is equipped with undersetting (9), and undersetting (9) covers on wheel；Described is outer Sealing ring (3) is located between cylinder cap (4) and piston rod (2), is marked with hydraulic oil in the inner casing (5) and outer shell (6)；In described Cylinder (5) bottom is connected to by metering hole (11) and damping control valve (8) with outer shell (6), and damping control valve (8) passes through controller control System；When piston rod (2) moves, hydraulic oil can be flowed in inner casing (5) and outer shell (6) by damping control valve (8), be passed through Damping force can be provided when damping hole in damping control valve (8)；Piston rod (2) between the upper bracket (1) and cylinder cap (4) On be fixed with fixed frame (12)；Outer shell (6) side is equipped with the suspension (14) being connected with vehicle frame, hangs (14) and fixed frame (12) it is connected between by connecting rod (13)；It is fixed with displacement sensor (15) on the suspension (14), displacement sensor (15) It is electrically connected by conducting wire (17) and controller.

2. a kind of magnetoelectricity mix suspending formula hydraulic damper according to claim 1, it is characterised in that: the piston head (10) electromagnet (16) are equipped with, electromagnet (16) is connected by the conducting wire (17) in piston rod (2) upper end with controller and power supply It connects, electromagnet (16) has magnetism when energization, changes size of current, direction is that magnetic magnetic pole and power can be changed；The electricity Inner seal ring is equipped between magnet (16) and piston rod (2)；Inner casing (5) bottom is fixed with permanent magnet (18), and centre is opened Hole, in order to the flowing of hydraulic oil；One group of spring (7), spring are equipped between the piston head (10) and permanent magnet (18) (7) for playing buffer function when powering off.

3. a kind of magnetoelectricity mix suspending formula hydraulic damper according to claim 2, it is characterised in that: the piston rod (2) it is slidably connected with piston head (10), one group of slide opening (19) is equipped in piston head (10)；It is slidably connected in the slide opening (19) Bracer (20) between bracer (20) and piston rod (2) hingedly by connecting rod (21) passes through company when piston rod (2) moves down Bar (21) releases bracer (20) to the direction close to inner casing (5) inner wall, increases the friction between piston head (10) and inner casing (5) Power.

4. a kind of magnetoelectricity mix suspending formula hydraulic damper according to claim 3, it is characterised in that: the bracer (20) It is equipped with one group of groove close to one end of inner casing (5) inner wall, is fixed with rubber cup (22) in groove, rubber cup (22) is used for piston head (10) inner casing (5) inner wall is sucked when upward sliding.

5. a kind of magnetoelectricity mix suspending formula hydraulic damper according to claim 4, it is characterised in that: the piston head (10) one end far from piston rod (2) is fixed with push rod (23), and push rod (23) diameter is less than metering hole (11) diameter；Push rod (23) The oil blocking ring (24) of one group of elasticity is equipped with close to the part of metering hole (11), oil blocking ring (24) diameter is straight slightly larger than metering hole (11) Diameter, and the distance between adjacent oil blocking ring (24) is greater than metering hole (11) depth；Edge is fallen equipped with circular arc on the metering hole (11) Angle；Increase the resistance of motion of piston rod (2) after oil blocking ring (24) enters metering hole (11) with push rod (23).

6. a kind of magnetoelectricity mix suspending formula hydraulic damper according to claim 5, it is characterised in that: the bracer (20) One end close to piston rod (2) offers cushion chamber (25), and traveller (26) are slidably connected in cushion chamber (25)；The traveller (26) one end on the outside of cushion chamber (25) and connecting rod (21) are hinged；The oil blocking ring (24) is hollow structure, oil blocking ring (24) cavity in is connected to by pipeline with cushion chamber (25)；Traveller (26) squeezes the compressed gas that cushion chamber (25) generate and is filled with In the cavity of oil blocking ring (24), the frictional force of oil blocking ring (24) Yu metering hole (11) is further increased.