CN103335051B - A kind ofly be suitable for the buffer automatically regulating stressed buffering - Google Patents

Abstract

The invention relates to a buffer suitable for automatic adjustment of force buffering, comprising: a cylinder body, a cylinder cover is arranged at the opening end of the cylinder body, and the opening is closed, and the cylinder cover is provided with an axially extending central through hole; A piston rod passes through the central through hole, and the top end of the piston rod is provided with a piston body assembly, which is suitable for piston movement in the cylinder; an electromagnet is axially provided in the side wall of the cylinder, and the piston The right end face of the body assembly is provided with a pressure sensor for detecting medium pressure, and the pressure sensor is connected with a processor module; when the slider hits the right end face of the cylinder block, the processor module is suitable for controlling a direct current according to the pressure value of the medium. The current drive module outputs a DC current that matches the medium pressure value, so that the electromagnet generates a corresponding magnetic field to attract the slider; until the processor module measures the medium pressure value as an equilibrium value, the DC current drive module is controlled to generate a reaction DC current is applied to the output to release the slider.

Description

A buffer suitable for automatic adjustment of force buffering

technical field

The invention relates to a buffer, in particular to a buffer using elastic colloid as a buffer medium.

Background technique

In the field of cushioning and shock absorption, buffers are widely used, and their main functions are to absorb various impact energy, protect equipment and reduce noise.

However, when the slider hits the buffer, due to the excessive impact energy, the piston in the buffer has no time to work, causing the slider to rebound. How to avoid this scene is a technical problem in this field.

Contents of the invention

The technical problem to be solved by the present invention is to provide a buffer suitable for automatic adjustment of force buffering, which solves the technical problem of the rebound of the slider when the slider hits the buffer.

The invention provides a buffer suitable for automatic adjustment of force buffering, comprising: a cylindrical cylinder body for filling buffer medium, a cylinder cover is sealed at the open end of the cylinder body, and the cylinder cover A piston rod is fitted in the central through hole for sealing and movement, and the right end of the piston rod is provided with a piston body assembly, which is suitable for piston movement in the cylinder, and the end of the piston rod is connected to the buffer The right end surface of the outer cylinder of the device; during buffering work, the right end surface of the cylinder body is used as the contact surface that collides with the slider, and the right end surface is laid with a buffer pad for buffering the impact of the slider. The slider is A magnetic slider; an electromagnet is arranged axially in the side wall of the cylinder body, and a pressure sensor for detecting medium pressure is arranged on the right end surface of the piston body assembly, and the pressure sensor is connected with a processor module; when the When the slider hits the right end face of the cylinder, the processor module is adapted to control a DC current drive module to output a DC current matching the medium pressure value according to the medium pressure value, so that the electromagnet generates a corresponding magnetic field to attract the slider; until the processor module measures the medium pressure value as an equilibrium value, control the DC current drive module to generate a reverse output DC current to release the slider.

Further, the piston body assembly is movable and sealed with the inner wall of the cylinder body, and the piston body assembly includes: left and right piston bodies arranged coaxially, and several piston bodies for the medium are symmetrically arranged on the left and right piston bodies. The through holes for axial flow, the sealing fit between the adjacent end faces of the left and right piston bodies, so that when the piston moves, the medium only passes through the through holes on the left and right piston bodies to realize the reciprocating flow; The left piston body is provided with a cavity for placing a motor, the motor is controlled by the processor module, and its rotor is connected to the right piston body, and is used to drive the right piston body to rotate according to the medium pressure to control the left and right pistons The relative positional relationship of each through hole on the body, that is, to control the medium flow.

The buffer pad is made of rubber material, and the wire mesh parallel to the end surface of the buffer pad is distributed in the buffer pad to prevent the rubber material from aging and fragmentation after multiple collisions.

There are multiple electromagnets (for example, 3 to 5), and they are evenly distributed in the side wall of the cylinder body of the final buffer, so as to make the magnetic force uniform.

Compared with the prior art, the present invention has the following advantages: (1) The present invention generates a magnetic field matching the impact pressure through the processor and the DC current drive module to attract the slider and prevent the slider from rebounding due to excessive impact energy (2) The present invention also overcomes the technical problem that the shock absorber cannot shrink in time due to impact energy fluctuations in the prior art, detects the impact energy through the pressure sensor, and properly adjusts the back and forth flow of the medium to control the piston body assembly The speed of movement enables the buffer to work accurately with the slider, avoiding possible damage due to the excessive impact energy and the lack of time for the buffer to compress, which may cause the buffer to work under high pressure for a long time; (3) through The through holes in the left and right piston bodies cooperate to control the reciprocating flow of the medium in the corresponding cylinders, thereby changing the reciprocating speed of the corresponding pistons, so as to relieve the pressure in the cylinders at all levels and prolong the life of the buffer.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be described in further detail below in conjunction with the specific embodiments according to the accompanying drawings, wherein

The structural representation of the buffer of the present invention of Fig. 1;

Fig. 2 is a schematic structural view of the piston body assembly in the buffer of the present invention;

Fig. 3 is a working schematic diagram of the piston body assembly of the present invention;

Fig. 4 is a structural block diagram of the control circuit of the present invention.

Among them, 1 cylinder block, 1-1 electromagnet, 1-2 buffer pad, 2 cylinder head, 3 piston rod, 4 piston body assembly, 5 outer cylinder, 6 pressure sensor, 7 slider, 4-1 left piston body, 4-2 right piston body, 4-3 through hole, 4-4 motor, 4-5 rotor.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

Example 1

See Figure 1 and Figure 4, a buffer suitable for automatic adjustment of force buffering, including: a cylinder 1 that is cylindrical and filled with a buffer medium, and a cylinder cover 2 is provided at the open end of the cylinder 1 , and the opening is closed, the central axis of the cylinder head 2 is provided with an axially extending central through hole; a piston rod 3 passes through the central through hole, and is sealed and fitted; the top end of the piston rod 3 is provided with a piston body Assembly 4, the piston body assembly is suitable for piston movement in the cylinder body 1, the end of the piston rod 3 is connected to the right end surface of the outer cylinder 5 of the buffer; when the buffer is working, the cylinder The right end face of body 1 is used as the contact surface that collides with slide block 7, and the buffer pad 1-2 that is used for cushioning slide block 7 impact is laid on this right end face; This slide block 7 is magnetic slide block; The cylinder body 1 An electromagnet 1-1 is arranged axially in the side wall, and a pressure sensor 6 for detecting medium pressure is arranged on the right end surface of the piston body assembly 4, and the pressure sensor 6 is connected to a processor module;

When the slider 7 hits the right end face of the cylinder 1, the processor module is adapted to control a DC current drive module to output a DC current matching the medium pressure value according to the medium pressure value, so that the The electromagnet 1-1 generates a corresponding magnetic field to attract the slider 7; until the processor module measures the medium pressure value as an equilibrium value, the DC current drive module is controlled to generate a reverse output DC current to Release the slider 7.

When the slider 7 hits the right end face of the cylinder body 1, the cylinder body 1 moves to the left, the piston body assembly 4 moves to the right relative to the cylinder body 1, and the buffer medium on the right side of the cylinder body 1 is subjected to When the buffer medium flows to the left side of the piston body assembly 4, the pressure on the buffer medium on the right side of the cylinder 1 gradually decreases until the medium pressure on the left and right sides of the piston body assembly 4 is equal, that is, the When the medium pressure value is an equilibrium value (that is, the pressure value when the hydraulic pressure values on the left and right sides of the piston body assembly 4 are equal), when the piston body assembly 4 stops working, the slider 7 also stops moving. At this time, the direct current drive The module generates a reverse output direct current, that is, the electromagnet 1-1 generates a reverse magnetic field to repel the slider to quickly release the slider.

Wherein, the processor module adopts a single-chip microcomputer and an embedded ARM module; the pressure sensor 6, for example, can adopt Johnson P499VBS-404C.

Referring to Fig. 2 and Fig. 3, the piston body assembly 4 is movable and sealed with the inner wall of the cylinder body 1, and the piston body assembly 4 includes: a coaxial left piston body 4-1 and a right piston body 4-2 , the left piston body 4-1 and the right piston body 4-2 are symmetrically provided with several through holes 4-3 for the axial flow of the medium, and the sealing fit between the adjacent end faces of the left and right piston bodies so that when the piston moves, the medium only passes through the through holes 4-3 on the left and right piston bodies to realize the reciprocating flow; the left piston body 4-1 is provided with a cavity for placing the motor 4-4 , the motor 4-4 is controlled by the processor module, and its rotor 4-5 is connected to the right piston body 4-2 to drive the right piston body 4-2 to rotate according to the medium pressure to control the left and right The relative positional relationship of each through hole 4-3 on the piston body is to control the medium flow.

Among Fig. 3, dotted line through hole 4-3 represents the through hole 4-3 in the left piston body 4-1, and solid line through hole 4-3 represents the through hole 4-3 in the right piston body 4-2, and arrow represents motor 4-4 rotation direction, this figure 2 shows the butt joint process of the corresponding through holes 4-3 on the mating surfaces of the left and right piston bodies 4-2, so as to control the medium flow in the through holes.

The right piston body 4-2 deflects coaxially with respect to the right piston body 4-2, and its rotation range does not exceed the diameter of the through hole 4-3, which can also be called the deflection angle, that is, the motor 4-4 drives the right piston body according to the medium pressure. The piston body 4-2 rotates back and forth within this diameter range to achieve the purpose of controlling the medium flow, thereby controlling the piston movement speed of the corresponding piston body assembly 4, thereby relieving the medium pressure in the cylinder body 1, and extending the buffer purpose of device life.

The motor 4-4 can be a DC motor 4-4 with high precision, or a stepping motor 4-4. The power supply part can be powered by batteries. Battery can be installed in left or right piston body 4-2.

As shown in Fig. 3, if there are multiple through holes 4-3, their distribution can be concentric with the left and right piston bodies 4-2. The signal and data lines can be placed in the wall of the cylinder body 1 of the buffers at all levels, or placed directly in the medium.

Claims (1)

1. be suitable for the buffer automatically regulating stressed buffering, it is characterized in that comprising:

Cylindrical, and for filling the cylinder body of buffer medium, cylinder cap is provided with in the opening end sealing of this cylinder body, in the central through bore of described cylinder cap, air-tight movable is combined with a piston rod, the right-hand member of this piston rod is provided with piston body assembly, this piston body assembly is suitable for making piston movement in described cylinder body, and the end of described piston rod is connected to its right end face of the urceolus of described buffer; When the work of buffering, the right side of described cylinder body is as the surface of contact collided with slide block, and this right side is equipped with the cushion pad clashed into for buffer sliding block, this slide block is magnetic slider; Be axially arranged with electromagnet in the sidewall of described cylinder body, the right side of described piston body assembly is provided with the pressure transducer for detecting pressure medium, and this pressure transducer is connected with a processor module;

When described slide block clashes into the right side of described cylinder body, described processor module is suitable for according to pressure medium value, control a direct current driven module and export the direct current (d.c.) matched with this pressure medium value, make described electromagnet produce corresponding magnetic field, with slide block described in adhesive; Until described processor module records pressure medium value when being equilibrium value, control described direct current driven module and produce and oppositely export direct current (d.c.), to discharge described slide block;

Described piston body assembly coordinates with the inwall movable sealing of described cylinder body, and this piston body assembly comprises: the coaxial left and right piston body arranged, this left and right piston body is arranged with several through holes for medium axial flow, being sealed and matched between the adjacent face of left and right piston body, during to make to make piston movement, medium realizes coming and going flowing by means of only each through hole on described left and right piston body; Be provided with the cavity for placing motor in described left piston body, this motor is controlled by described processor module, and its rotor is connected to described right piston body, for according to medium

Pressure drives this right piston body to rotate, to control the relative position relation of each through hole on left and right piston body, i.e. and control media flow.