CN110735878A - A high bearing capacity cylindrical spring cylinder combined shock isolator and its application - Google Patents

Abstract

The invention discloses a high bearing capacity cylindrical spring cylinder combined shock isolator and its application. The shock isolator comprises: an upper flange assembly, the upper flange assembly includes an upper flange, the upper flange is welded with an upper guide cylinder, The upper tension frame is welded between the adjacent upper guide cylinders, the upper spherical hinge seat is installed on the bottom surface of the upper flange, the lower flange assembly includes a lower flange, the lower flange is welded with a lower guide cylinder, and the adjacent lower guide cylinders are The lower tension frame is welded, the lower spherical hinge seat is installed on the top surface of the lower flange, the vibration isolation cylinder is hinged with the upper spherical hinge seat and the lower spherical hinge seat, the upper guide cylinder and the lower guide cylinder are set with compression springs, and the upper tension frame corresponds to the The lower tension frame is connected by a screw; the vibration isolation cylinder includes a cylinder barrel, a front cylinder cover and a rear cylinder cover are installed at both ends of the cylinder barrel, and air holes are provided on one side of the front cylinder cover and the rear cylinder cover. The air hole is connected, the rear cylinder head is installed with a lower ball hinge, one end of the piston rod is installed with the piston, and the other end is installed with an upper ball hinge, which has a large bearing capacity, and also has a high effect of vibration isolation and shock absorption.

Description

A high bearing capacity cylindrical spring cylinder combined shock isolator and its application

technical field

The invention belongs to a shock isolation device for explosion shock vibration, in particular to a high bearing capacity cylindrical spring cylinder combined shock isolator and its application.

Background technique

Whether it is the vibration (vibration) caused by the power machinery or the vibration caused by the explosion, it will have a certain impact on people's lives, especially the strong vibration, which often causes damage to the environment and casualties. In order to reduce and isolate the destructive effects of strong vibrations, the research on seismic isolation technology has attracted more and more attention. After decades of rapid development, the current isolation technology for vibration caused by power machinery has become increasingly perfect. From the control technology level, it includes passive control, active control, semi-active control, hybrid control and other control technologies; from vibration isolation devices In terms of types, including hysteretic damping type, friction type and viscous damping type; from the shock isolation device products, there are ordinary laminated rubber bearings, high damping laminated rubber bearings, lead core laminated rubber bearings, and coil springs. Bearings, metal sliding isolation bearings, metal spherical sliding isolation systems, friction pendulum isolation bearings, new SMA sliding isolation bearings, metal dampers, cylinder dampers, mild steel dampers, etc. For the isolation of explosion shock vibration, there are also some research results, such as wire rope isolators and PGG isolators with low bearing capacity, which do not have wide applicability and cannot meet the requirements of high bearing capacity for explosion shock vibration isolation. shock.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is in the field of explosion shock vibration isolation, a vibration isolation device that can meet the area size and resistance requirements at the same time, overcomes the shortcomings of the prior art, and provides a high bearing capacity cylindrical spring cylinder combined vibration isolator And its application, according to the respective advantages of the existing springs and cylinders, a new type of combined isolator is obtained by combining two different isolators, which can not only meet the requirements of resistance and damping of a single isolator, but also It ensures the overall isolation performance, and has the effects of relatively slow deformation, small dynamic force changes, and easy control. It is suitable for isolation in strong shock and vibration environments.

In order to solve the above technical problems, the present invention provides a high bearing capacity cylindrical spring cylinder combined shock isolator, comprising: an upper flange assembly and a lower flange assembly that are oppositely arranged, the upper flange assembly includes an upper flange, an upper flange Four upper guide cylinders are welded on the four corners of the lower surface of the upper flange, and the upper tension frame is welded between the adjacent upper guide cylinders at the edge of the lower surface of the upper flange, and the upper spherical hinge seat is installed at the center of the lower surface of the upper flange. There are protective plates around the lower surface of the upper flange, and the lower end surface of the protective plate is flush with the outer side of the rear cylinder head; the lower flange assembly includes a lower flange, and the upper surface of the lower flange is welded with four lower guide cylinders at four corners. A lower tension frame is welded between the adjacent lower guide cylinders at the edge of the upper surface of the lower flange, and a lower spherical hinge seat is installed at the center of the upper surface of the lower flange. The shock isolation cylinder passes through the upper spherical hinge and the upper spherical hinge seat. At the same time, the lower ball hinge is hinged with the lower ball hinge seat. The upper guide cylinder and the lower guide cylinder correspond one-to-one in position and shape and are nested with each other. , The lower ends are respectively attached to the lower surface of the upper flange and the upper surface of the lower flange, and the upper tensioning frame and the lower tensioning frame correspond one-to-one and are connected by screws respectively;

The vibration isolation cylinder includes a vertically arranged sleeved cylinder, the sleeved cylinder includes an inner cylinder and an outer cylinder, the inner and outer cylinders are formed by interference fit, and both ends of the sleeved cylinder are fixedly installed with The front and rear cylinder heads, the front and rear cylinder heads are provided with air holes along the central axis of the sleeve cylinder, and the drilling screws are vertically connected with the air holes through threads. Through hole, a lower ball hinge is installed on the outer side of the rear cylinder cover, a piston is installed in the inner cylinder barrel, the end of the piston is provided with an air cavity communication hole along the direction of the central axis of the inner cylinder barrel, and the piston rod passes through the front cylinder cover and the piston. The piston rod, the piston, the front cylinder cover and the rear cylinder cover are coaxial with the sleeve type cylinder barrel, and the outer end of the piston rod is installed with an upper ball joint through threads. The damping of the isolator can be adjusted by adjusting the number and size of the air holes.

The technical solution further defined in the present invention is: the inner diameter of the upper guide cylinder is larger than the outer diameter of the lower guide cylinder by 9.5 mm.

Further, the wire diameter of the compression spring is greater than 35mm, and the stiffness is greater than 133N/mm.

Further, at the contact point between the piston and the cylinder, a guide band and a sealing ring are installed on the outer peripheral edge of the piston.

Further, oil cups are installed on both the upper spherical hinge and the lower spherical hinge.

Further, the diameter of the through hole of the drilling screw is 1mm-2mm.

further,

The present invention also provides an application of a high bearing capacity cylindrical spring cylinder combined shock isolator, including:

Several shock isolation devices are evenly distributed between the base and the base, and the explosion container is installed above the base and fixed by support;

The vibration isolation device is installed vertically between the base and the base;

The base is fixedly installed in the foundation.

The aforesaid base is arranged in parallel with the base, and the base is fixedly embedded in the foundation and is on the same horizontal plane as the foundation.

The aforementioned base is U-shaped and is inlaid and fixed in the foundation; the vibration isolation device is arranged between the lower surface of the base and the upper surface of the base, and between the sides around the base and the inner surface of the U-shaped vertical side wall of the base. .

The beneficial effects of the present invention are:

The invention adopts the combination of a spring and a cylinder, wherein the piston of the cylinder is provided with a communication hole, and the end cover of the cylinder is provided with an air hole. When the cylinder is compressed under the action of an external force, the communication hole and the air hole can carry out the in and out of the air flow, Therefore, a certain damping is given to the vibration isolator for shock absorption and shock absorption, and the size of the damping can be set by setting the number and size of the communication holes and the air holes.

According to the respective advantages of the existing springs and cylinders with different physical and mechanical properties of the isolation components, the two different isolation components are combined to obtain a new type of combined isolator, which can meet the requirements of resistance and damping of a single isolator. According to the requirements, the vibration generated by the explosion impact is distributed to each isolator; the requirements for the resistance and damping of a single isolator are reduced to ensure the overall isolation performance; it has relatively slow deformation, small dynamic force changes, and easy control. The effect is suitable for isolation in strong shock and vibration environments.

Description of drawings

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

Fig. 2 is a sectional view of the present invention;

Fig. 3 is the side sectional view of the present invention;

Fig. 4 is the front view of the vibration isolation cylinder of the present invention;

Fig. 5 is the sectional view of the drilling screw of the present invention;

Fig. 6 is the installation schematic diagram 1 of the present invention;

FIG. 7 is a second installation schematic diagram of the present invention.

Among them, 1-upper flange, 2-compression spring, 3-upper guide cylinder, 4-vibration isolation cylinder, 400-upper ball hinge, 401-oil cup, 402-piston rod, 403-front cylinder head, 404-drill Hole screw, 405-air hole, 406-piston, 407-inner cylinder barrel, 408-rear cylinder head, 409-lower ball joint, 410-air chamber connecting hole, 411-sealing ring, 412-guide belt, 413-through hole , 414-outer cylinder, 5-lower guide cylinder, 6-lower flange, 7-lower ball joint seat, 8-lower tension frame, 9-screw, 10-upper tension frame, 11-upper ball joint seat, 12 - Shield, 13- Explosion Container, 14- Support, 15- Base, 16- Shock Isolator, 17- Base.

Detailed ways

Example 1

This embodiment provides a high bearing capacity cylindrical spring cylinder combined shock isolator, the structure is shown in Figures 1-5, including: including: an upper flange assembly and a lower flange assembly that are oppositely arranged, and the upper flange assembly includes an upper flange assembly Flange 1, the upper flange 1 is in contact with the explosion container and plays the role of supporting the explosion container. Four upper guide cylinders 3 are welded to the four corners of the lower surface of the upper flange 1, and the upper flange is located between the adjacent upper guide cylinders 3. An upper tension frame 10 is welded at the edge of the lower surface of the upper flange 1, an upper spherical hinge seat 11 is installed at the center of the lower surface of the upper flange 1, a protective plate 12 is arranged around the lower surface of the upper flange 1, and the lower end surface of the protective plate 12 is installed. It is flush with the outside of the rear cylinder head 408, the direction of the force transmitted by the explosion container is uncertain, and sometimes the instantaneous force is relatively large. Due to some reasons, the parts inside the shock isolator will splash, and the splashed parts will seriously threaten the staff. By setting the protective plate 12, the parts inside the shock isolator can be effectively prevented from splashing to the outside, and the safety of the field staff is protected; the lower flange assembly includes the lower flange 6, and the lower flange 6 is in contact with the foundation. Supporting the whole part, four lower guide cylinders 5 are welded on the upper surface of the lower flange 6 at four corners, and a lower tension frame 8 is welded between the adjacent lower guide cylinders 5 at the edge of the upper surface of the lower flange, and the lower flange 6 The lower spherical hinge seat 7 is installed at the center position of the upper surface of the shock-isolating cylinder 4, and the shock isolation cylinder 4 is hinged with the upper spherical hinge seat 11 through the upper spherical hinge 400, and at the same time, it is hinged with the lower spherical hinge seat 7 through the lower spherical hinge 409. The direction is uncertain, the spherical hinge can adapt to a certain lateral force, and the vibration isolation cylinder 4 is hinged with the upper flange 1 and the lower flange 6, which can ensure that the vibration isolation cylinder 4 is not disturbed by lateral force during the shock absorption process, and at the same time It also protects the vibration isolation cylinder 4 from being damaged by lateral force during the shock absorption process, and ensures the service life of the vibration isolation cylinder 4. The upper guide cylinder 3 and the lower guide cylinder 5 correspond one-to-one in position and shape and fit each other. After the explosive in the explosion container explodes, the explosion container will transmit a certain force to the outside world, the upper flange assembly and the lower flange assembly will have a certain relative movement, and the upper guide cylinder 3 and the corresponding lower guide cylinder 5 will have relative movement. , which can provide guidance for the upper flange assembly and the lower flange assembly to avoid damage to other components of the shock isolator due to the lateral force generated by the explosion. The spring 2 can assist in supporting the upper flange 1 and the lower flange 6, and at the same time provide a certain buffer force. The upper and lower ends of the compression spring 2 are respectively attached to the lower surface of the upper flange 1 and the upper surface of the lower flange 6. The upper tensioning frame 10 corresponds to the lower tensioning frame 8 one-to-one and is connected by the screw 9 respectively, which can provide a certain pre-tightening force to the whole system, and at the same time, it can also ensure that the upper flange 1 and the lower flange 6 are parallel. the normal conduct of the entire test;

The vibration isolation cylinder 4 includes a vertically arranged sleeve-type cylinder. The sleeve-type cylinder includes an inner cylinder 407 and an outer cylinder 414. The inner cylinder 407 and the outer cylinder 414 are formed by interference fit. The inner cylinder 407 It is made of a different material from the outer cylinder 414. It is processed into a sleeved cylinder. The sleeved cylinder can meet the higher test pressure, ensure the safety of the vibration isolation cylinder 4 to a certain extent, and prolong the vibration isolation cylinder. 4 service life, the two ends of the sleeve cylinder are fixedly installed with a front cylinder head 403 and a rear cylinder head 408. The front cylinder head 403 and the rear cylinder head 408 are provided with air holes 405 and 405 along the central axis of the sleeve cylinder. An air source passage is provided for the shock-isolating cylinder 4. The drilling screw 404 is vertically connected with the air hole 405 through the thread. The drilling screw 404 is provided with a through hole 413 along its central axis. The diameter of the through hole 413 is smaller than the diameter of the air hole 405. It can play a buffering role during the earthquake, and at the same time protect the air source devices such as air pipes and valves from the outside. There is an air cavity communication hole 410 along the central axis of the inner cylinder 407, and the air cavity communication hole 410 communicates with the two air cavities of the shock isolation cylinder 4. When the explosion container will transmit force to the outside world, the piston rod 402 drives the piston When the 406 moves downward, the two air cavities of the vibration isolation cylinder 4 will transmit the pressurized gas through the air cavity communication hole 410, so that the gas pressures of the two air cavities of the vibration isolation cylinder 4 are balanced, ensuring that the piston 406 will not be fast. Falling, maintaining a certain damping characteristics, but also protecting the isolation cylinder 4 from being damaged by the sudden increase of gas pressure, the piston rod 402 passes through the front cylinder cover 403 and is installed with the piston 406, the piston rod 402, the piston 406, the front The cylinder head 403 and the rear cylinder head 408 are coaxial with the sleeve-type cylinder, and the outer end of the piston rod 402 is provided with an upper spherical hinge 400 through threads.

The specific working process is as follows: the present invention is installed below the explosion container. After the explosive in the explosion container is exploded, the explosion container will transmit a certain force to the outside world, and the upper flange assembly and the lower flange assembly of the present invention will generate a certain amount of force. Relative movement, the upper guide cylinder 3 and the corresponding lower guide cylinder 5 will have relative movement at the same time, which can provide guidance for the upper flange assembly and the lower flange assembly, and the compression spring 2 can assist in supporting the upper flange 1 and the lower flange 6. Provide a certain buffer force, and at the same time, make the piston rod 402 of the vibration isolation cylinder 4 drive the piston 406 to move downward, and the two air cavities of the vibration isolation cylinder 4 will transmit the pressurized gas through the air cavity communication hole 410, so that the vibration isolation cylinder 4 The gas pressure of the two air cavities is kept in balance, which ensures that the piston 406 does not fall quickly, and at the same time maintains a certain damping characteristic, and also protects the vibration isolation cylinder 4 from being damaged by the sudden increase of gas pressure, and the drilling screw 404 passes through The thread is connected with the air hole 405, and the drilling screw 404 is provided with a through hole 413. During the shock absorption process, the pressure gas is discharged through the through hole 413 in the drilling screw 404. The diameter of the through hole 413 is smaller than the diameter of the air hole 405, which can be removed At the same time, it protects the outside air pipes, valves and other air source devices.

The inner diameter of the upper guide cylinder 3 is 9.5mm larger than the outer diameter of the lower guide cylinder 5. When the upper guide cylinder 3 and the corresponding lower guide cylinder 5 move relative to each other, it can ensure better guidance and can adapt to larger side It adapts to the uncertainty of the direction in which the explosive container transmits the force to the outside world; the wire diameter of the compression spring 2 is greater than 35mm, and the stiffness is greater than 133N/mm, which ensures that the compression spring 2 plays a better auxiliary support role; the piston 406 and the At the contact point of the cylinder 407, a guide belt 412 and a sealing ring 411 are installed on the piston 406. During the downward movement of the piston 406, the guide belt 412 can provide a support force for the piston 406 and guide the piston 406 to avoid the piston 406. 406 is offset in the cylinder 407, which causes the piston 406 and the inner wall of the cylinder 407 to collide and scratch, which ensures the service life of the shock-isolating cylinder 4. The sealing ring 411 can provide sealing for the piston 406 and the inner wall of the cylinder 407, At the same time, a certain damping characteristic is maintained; both the upper ball joint 400 and the lower ball joint 409 are equipped with oil cups 401, through which oil cups 401 can be used to fill the upper ball joint 400 and the lower ball joint 409 with oil at any time, ensuring that the upper ball joint 400 and the lower ball joint The lubricity of the ball joint 409 ensures the service life of the upper ball joint 400 and the lower ball joint 409; the diameter of the through hole 413 of the drilling screw 404 is 1mm-2mm, which can play a buffer role and protect the outside air pipes and valves at the same time. and other air source devices.

Example 2

This embodiment provides an application of a high bearing capacity cylindrical spring-cylinder combined shock isolator, as shown in FIG. 6 , including:

A plurality of vibration isolation devices 16 are evenly distributed between the base 15 and the base 17, and the explosion container 13 is installed above the base 15 and fixed by the support 14;

The vibration isolation device 16 is vertically installed between the base 15 and the base 17;

The base 17 is fixedly mounted in the foundation.

Figure 6 shows the first installation method, the base 15 is arranged in parallel with the base 17, the base 17 is fixedly embedded in the foundation, and is on the same horizontal plane as the foundation

As shown in FIG. 7 , the second installation method is shown. The base 17 is U-shaped and is embedded and fixed in the foundation; Between the surrounding side and the inner surface of the U-shaped vertical side wall of the base 17 .

In this embodiment, according to the respective advantages of the existing springs and cylinders with different physical and mechanical properties of the shock isolation members, two different shock isolation members are combined to obtain a new type of combined shock isolator, which can meet the resistance of a single shock isolator , damping requirements, the vibration generated by the explosion impact is distributed to each isolator; the requirements for the resistance and damping of a single isolator are reduced to ensure the overall isolation performance; it has relatively slow deformation, small dynamic force changes, The easy-to-control effect is suitable for isolation in high-shock vibration environments.

The first installation method is used to test the performance parameters of the isolation device under both static and dynamic conditions.

Under the action of static force, according to the calculation method of the stiffness of the isolator, the stiffness of the spring-cylinder isolator under different numbers and different loading levels is calculated, as shown in Table 1.

Table 1 Stiffness and deformation of TQGG under different loading grades.

It can be seen from Table 1 that under different loading classifications, the stiffness of the spring-cylinder isolator varies in the range of 546~561 N/mm, the deviation is within 2.8%, and the change in stiffness is small. The resistance of the spring-cylinder isolator - The deformation curve is an approximate linear relationship; when the deformation of the spring-cylinder isolator reaches 174mm, the bearing capacity is 130kN.

Under the dynamic action, the dynamic characteristic parameters of the spring-cylinder isolator are obtained through calculation and analysis, as shown in Table 2.

Table 2 Dynamic characteristic parameters of TQGG.

It can be seen from the table that the periods of the three spring-cylinder isolators are 0.518s, 0.534s and 0.502s respectively, the maximum relative error is 6.4%, the frequencies are 1.93Hz, 1.87Hz and 1.99Hz respectively, the damping ratio ξ were 0.124, 0.127 and 0.149, respectively.

The above embodiments are only to illustrate the technical idea of the present invention, and cannot limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the present invention. Inside.

Claims (9)

1. The cylinder spring and cylinder combined shock isolator is characterized by comprising an upper flange component and a lower flange component which are oppositely arranged, wherein the upper flange component comprises an upper flange (1), four upper guide cylinders (3) are welded at four corners of the lower surface of the upper flange (1), an upper tensioning frame (10) is welded at the edge of the lower surface of the upper flange (1) between the adjacent upper guide cylinders (3), an upper ball hinge seat (11) is installed at the center position of the lower surface of the upper flange (1), protection plates (12) are arranged at the periphery of the lower surface of the upper flange (1), the lower end surface of each protection plate (12) is flush with the outer side of a rear cylinder cover (408), the lower flange component comprises a lower flange (6), four lower guide cylinders (5) are welded at four corners of the upper surface of the lower flange (6), a lower tensioning frame (8) is welded at the edge of the upper surface of the lower flange between the adjacent lower guide cylinders (5), a lower ball hinge seat (7) is installed at the center position of the upper surface of the lower flange, an upper cylinder (4) is hinged with the upper guide cylinder (3) through an upper ball hinge seat (400), the upper ball hinge seat (3), the upper hinge seat (2) is hinged with the lower ball hinge seat (3), the upper end of the lower spring hinge (2), the lower spring hinge seat (6), and the lower hinge seat (2), the upper spring hinge (2) are hinged with the lower hinge (3), the lower hinge seat, the upper hinge seat (2), and the lower hinge (2), the lower hinge (3), the lower hinge seat (2), the upper hinge seat (2), and the lower hinge (3), the lower hinge (2) and the lower;

   the shock insulation cylinder (4) comprises a vertically arranged sleeve type cylinder barrel, the sleeve type cylinder barrel comprises an inner cylinder barrel (407) and an outer cylinder barrel (414), the inner cylinder barrel (407) and the outer cylinder barrel (414) are sleeved in an interference fit manner, two ends of the sleeve type cylinder barrel are fixedly provided with a front cylinder cover (403) and a rear cylinder cover (408), the front cylinder cover (403) and the rear cylinder cover (408) are respectively provided with an air hole (405) along the central axis direction of the sleeve type cylinder barrel, a drilling screw (404) is vertically connected with the air hole (405) through a thread, a through hole (413) is arranged in the drilling screw (404) along the central axis direction of the drilling screw, the outer side of the rear cylinder cover (408) is provided with a lower spherical hinge (409), the inner cylinder barrel (407) is internally provided with a piston (406) in a fit manner, the end part of the piston (406) is provided with an air cavity (410) along the central axis direction of the, the piston rod (402), the piston (406), the front cylinder cover (403) and the rear cylinder cover (408) are coaxial with the sleeve type cylinder barrel, and an upper spherical hinge (400) is installed at the outer end of the piston rod (402) through threads.
2. 2. The high-bearing-capacity cylindrical spring cylinder combined vibration isolator as claimed in claim 1, wherein the inner diameter of the upper guide cylinder (3) is 9.5mm larger than the outer diameter of the lower guide cylinder (5).
3. 3. A high load bearing cylindrical spring cylinder combination decoupler as in claim 1 wherein the compression spring (2) has a wire diameter greater than 35mm and a stiffness greater than 133N/mm.
4. 4. The high-bearing capacity cylindrical spring cylinder unit isolator as claimed in claim 1, wherein a guide band (412) and a seal ring (411) are mounted on the outer peripheral edge of the piston (406) at the contact position of the piston (406) and the cylinder tube (407).
5. 5. The high-bearing-capacity cylindrical spring cylinder combined vibration isolator as claimed in claim 1, wherein the upper spherical hinge (400) and the lower spherical hinge (409) are both provided with oil cups (401).
6. 6. The high load bearing cylindrical spring cylinder combination isolator of claim 1, wherein the through hole (413) of the drilling screw (404) has a diameter of 1mm to 2 mm.
7. 7. Use of a high load bearing cylindrical spring cylinder combination isolator as claimed in any of claims 1 to 6 at comprising:

   a plurality of shock insulation devices (16) are uniformly distributed between a base (15) and a base (17), and an explosion container (13) is arranged above the base (15) and is fixed through a support (14);

   the shock insulation device (16) is vertically arranged between the base (15) and the base (17);

   the base (17) is fixedly mounted in a foundation.
8. 8. Use of a high load bearing cylindrical spring cylinder unit decoupler as claimed in claim 7 wherein the base (15) is arranged parallel to the base (17) and the base (17) is fixedly embedded in the foundation at a level of .
9. 9. Use of a high load bearing cylindrical spring cylinder combination isolator as claimed in claim 7, characterized in that the base (17) is U-shaped and is fixed in the ground by embedding; the shock insulation device (16) is arranged between the lower surface of the base (15) and the upper surface of the base (17) and between the peripheral side surfaces of the base (15) and the inner side surface of the U-shaped vertical side wall of the base (17).

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