A vibration-triggered locking device

Abstract

The present invention belongs to the technical field of shockproof equipment, and specifically relates to a vibration-triggered locking device, which is particularly suitable for shockproof structures such as bridges and buildings. It includes a horizontal imprisonment body and a vertical imprisonment body connected by a telescopic structure, the telescopic structure includes a cylinder and a piston rod arranged in the cylinder, the cylinder base and the piston rod end are respectively hinged with the horizontal imprisonment body and the vertical imprisonment body, the cylinder surface is provided with a plurality of lock holes for inserting lock tubes, the piston rod surface is provided with a plurality of keyholes, the lock tube is provided with a push spring, a lock rod and a trigger, the trigger includes pin holes respectively arranged on the surface of the lock tube and the lock rod and a pin column matched with the pin hole, the outer end of the pin column is connected to a counterweight through a connecting rod, the counterweight swings to pull the pin column off, and the push spring is pre-compressed by a reset pull rod connected to the lock rod. The vibration-triggered locking device has the characteristics of high locking strength, good anti-seismic effect, long service life, simple and compact structure, and sensitive vibration triggering.

Description

Technical Field

[0001] The invention belongs to the technical field of shockproof equipment, and specifically relates to a vibration-triggered locking device, which is particularly suitable for shockproof structures such as bridges and buildings. Background Art

[0002] Due to the actual needs of earthquake prevention and disaster reduction, the current buildings, residential buildings, highways, railways and bridges all have shock-proof and shock-absorbing structural designs. For example, dampers and speed lockers are widely used in the field of roads and bridges. Among them, dampers are shock-absorbing products, and speed lockers are earthquake-resistant products. The purpose is to lock all the beams and piers to achieve the overall earthquake resistance of the bridge and disperse the earthquake impact, rather than just using a fixed pier or bridge support to resist the earthquake force.

[0003] The speed locker is realized by using the non-Newtonian fluid properties of silica gel in the rigid cylinder. Silica gel is a pink clay-like substance with a reverse thixotropic property of a shock-coagulating fluid, and its viscosity is an increasing function of the velocity gradient. When it is not subjected to external force, it is like a solid, but it can flow slowly under a constant pressure at a slow speed; it becomes solid again under a high speed and sudden impact. When the bridge plate only undergoes temperature expansion and contraction, or creep and shrinkage of concrete and other slow movements, the medium always maintains the properties of a fluid and can flow from one side of the piston to the other through the gap in the cylinder wall or the small holes on the piston, so that the piston can move freely in the cylinder, and the cylinder will not produce harmful constraints to limit the free movement of the bridge plate. When the bridge is subjected to sudden vibration loads, the bridge plate drives the piston to move suddenly and quickly, the medium flows at a very high speed in the gap, the viscosity increases rapidly, and finally the fluid becomes almost solid, so the piston is locked.

[0004] The speed locker has the above advantages, but its disadvantages are also fatal: first, the cylinder body is not tightly sealed, and after long-term work, repeated impacts will cause oil leakage; second, the working medium material is easy to age, for example, silicone is easy to deteriorate and fail after long-term use, and lose its locking function; third, the processing and manufacturing cost of non-Newtonian fluid materials is high. For example, domestic silicone production technology is immature and still needs to be imported at this stage. It is highly dependent on foreign countries and has poor economic benefits. Utility Model Content

[0005] The purpose of the present invention is to provide a locking device with high locking strength, good anti-seismic effect, long service life, simple and compact structure, and sensitive vibration triggering, which is particularly suitable for bridge earthquake resistance.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A vibration-triggered locking device, characterized in that it includes a horizontal restraining body and a vertical restraining body connected by a telescopic structure, the telescopic structure includes a cylinder and a piston rod arranged in the cylinder, the cylinder base and the piston rod end are respectively hinged to the horizontal restraining body and the vertical restraining body, the cylinder surface is provided with a plurality of lock holes for inserting lock tubes, the piston rod surface is provided with a plurality of keyholes, the lock tube is provided with a push spring, a lock rod and a trigger, the trigger includes pin holes respectively arranged on the surfaces of the lock tube and the lock rod and a pin column matched with the pin hole, the outer end of the pin column is connected to a counterweight through a connecting rod, the counterweight swings to pull the pin column off, and the push spring is pre-compressed by a reset pull rod connected to the lock rod.

[0008] Additional technical features constituting the above-mentioned vibration-triggered locking device also include:

[0009] ——The number of lock holes on the cylinder for installing the lock tube is two, the connecting rod of the trigger includes a horizontal rod and a vertical rod, the two ends of the horizontal rod are respectively connected to the pins on the lock tube, and the counterweight is arranged at the end of the vertical rod;

[0010] ——The middle part of the horizontal rod is a hinged structure, the horizontal pins are respectively connected to the horizontal rods on both sides of the hinged structure, and the vertical rod is connected to the horizontal pins;

[0011] ——The horizontal imprisonment body and the vertical imprisonment body both include a positioning plate and a fastening bolt or anchoring steel bar arranged on the bottom surface of the positioning plate. The surface of the positioning plate has a hinged clip, which is respectively inserted into the hinged tongue of the cylinder base and the end of the piston rod and penetrated by a rotating shaft;

[0012] The end of the piston rod located in the cylinder is provided with a limit block, and the limit block cooperates with a sealing cover arranged at the mouth of the cylinder;

[0013] ——The cross-sectional shapes of the cylinder barrel and the piston rod are consistent, and the cross-sectional shapes are circular, rectangular or polygonal;

[0014] ——The shape of the keyhole on the piston rod is consistent with the cross-sectional shape of the lock rod in the lock tube, and its shape is circular, rectangular or polygonal;

[0015] ——The keyhole of the piston rod and the pin hole of the locking rod are through holes or blind holes.

[0016] Compared with the prior art, the vibration-triggered locking device provided by the present invention has the following advantages: first, since the locking device is positioned at the right angle of the building through the horizontal restraining body and the vertical restraining body, such as the junction of the bridge beam and the bridge pier, the horizontal restraining body and the vertical restraining body are connected by a telescopic structure, which will not restrict the displacement, deformation, rotation, etc. of the bridge, and cooperates with the normal operation of the bridge support. The surface of the cylinder body constituting the telescopic structure is provided with a plurality of lock holes for inserting lock tubes, and the lock tube is provided with a push spring, a lock rod and a trigger. The surface of the piston rod is provided with a plurality of lock holes. When encountering an earthquake impact, the trigger responds, so that the push spring pushes the lock rod to insert into the lock hole of the piston rod, making the telescopic function invalid, so that the horizontal restraining body, the vertical restraining body and the fixed-length telescopic structure form a locked position, thereby improving the earthquake resistance of the bridge structure. force; secondly, because the trigger includes pin holes respectively arranged on the surfaces of the lock tube and the lock rod and a pin column matched with the pin hole, the outer end of the pin column is connected to the counterweight through a connecting rod, and the counterweight swings to pull the pin column off, and the push spring is pre-compressed by the reset pull rod connected to the lock rod, that is, the lock rod is pulled outward by the reset pull rod to compress the push spring, and after the pin holes on the lock rod and the lock tube coincide, the pin column is inserted. At this time, the telescopic structure works normally. When it is impacted by an earthquake, the counterweight swings or jumps, the connecting rod pulls the pin column out of the pin hole, and the push spring applies force to the lock rod to make it insert into the keyhole of the piston rod to complete the locking positioning. It has the advantages of sensitive vibration triggering, rapid locking action, high structural strength and significant seismic resistance. At the same time, the structure is simple and compact, the layout of the locking components is reasonable, the processing and manufacturing cost is low, the economic benefit is good, and it is of great value for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a vibration-triggered locking device of the present invention (front view);

[0018] Figure 2 This is a schematic diagram of the structure of the vibration-triggered locking device (top view). DETAILED DESCRIPTION

[0019] The structure and working principle of a vibration-triggered locking device provided by the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] See also Figure 1 , Figure 2, is a schematic diagram of the structure of a vibration-triggered locking device provided by the present invention. The vibration-triggered locking device comprises a horizontal imprisonment body 1 and a vertical imprisonment body 2 connected by a telescopic structure 3, the telescopic structure 3 comprises a cylinder 31 and a piston rod 32 arranged in the cylinder 31, the base 311 of the cylinder 31 and the end of the piston rod 32 are respectively hinged with the horizontal imprisonment body 1 and the vertical imprisonment body 2, the surface of the cylinder 31 is provided with a plurality of lock holes 42 for inserting the lock tube 41, the surface of the piston rod 32 is provided with a plurality of lock holes 321, the lock tube 41 is provided with a push spring 411, a lock rod 412 and a trigger, the trigger comprises a pin hole 51 respectively arranged on the surface of the lock tube 41 and the lock rod 412 and a pin 52 matched with the pin hole 51, the outer end of the pin 52 is connected to the counterweight 54 through a connecting rod 53, the counterweight 54 swings to pull the pin 52 off, and the push spring 411 is pre-compressed by a reset pull rod 55 connected to the lock rod 412.

[0021] Its working principle is as follows: the vibration-triggered locking device is installed on the bridge, the horizontal locking body 1 is connected and fixed to the side of the bridge pier, the vertical locking body 2 is connected and fixed to the bottom surface of the bridge beam, the locking bodies are hinged by the telescopic structure 3, and the normal displacement change of the bridge is not affected. The surface of the cylinder 31 of the telescopic structure 3 is provided with a plurality of locking holes 42 for inserting the locking tube 41, and the locking tube 41 has a locking rod 412 driven by a push spring 411. The locking rod 412 pops out and inserts into the keyhole 321 on the piston rod 32 to complete the locking action, and the locking rod 412 is restricted by the trigger, and the trigger The device includes pin holes 51 respectively arranged on the surfaces of the lock tube 41 and the lock rod 412, and a pin 52 cooperating with the pin hole 51. The push spring 411 is pre-compressed by a reset pull rod 55 connected to the lock rod 412, so that the lock rod 412 is synchronously retracted, and the pin 52 is inserted into the pin hole 51 to position the lock rod 412. After the pin 52 is pulled out, the lock rod 412 extends out to lock the piston rod 32. Since the outer end of the pin 52 is connected to the counterweight 54 through the connecting rod 53, the counterweight 54 swings or jumps to pull the pin 52 off, thereby sensitively sensing the earthquake impact and quickly triggering the pin 52 to act.

[0022] In the structure constituting the above-mentioned vibration-triggered locking device,

[0023] ——As a preferred embodiment, the number of lock holes 42 for installing the lock tube 41 on the cylinder 31 is two, and the connecting rod 53 of the trigger includes a horizontal rod and a vertical rod. The two ends of the horizontal rod are respectively connected to the pin 52 on the lock tube 41, and the counterweight 54 is arranged at the end of the vertical rod, that is, the connecting rod 53 of the trigger is in a horizontal and vertical cross-balanced state, and has a good sensitivity to the longitudinal and lateral impacts of the earthquake, that is, no matter the counterweight 54 swings or jumps, the vertical rod will ensure that the horizontal rod moves, thereby pulling the pin 52 off;

[0024] In practical applications, it is best to place the vertical rod and the counterweight 54 at its end above the horizontal rod so that the counterweight 54 rests against the bottom of the bridge beam, thereby increasing the sensitivity of the counterweight 54 to earthquake shocks to a greater extent;

[0025] ——Furthermore, the middle part of the horizontal rod is a hinged structure, and the horizontal pins 61 are respectively connected to the horizontal rods on both sides of the hinged structure, and the vertical rods are connected to the horizontal pins 61, that is, the horizontal pins 61 bear the shear force from the counterweight 54, and are particularly sensitive to longitudinal impact. When an earthquake occurs, the first thing to reach the bottom is the longitudinal shock wave. After the counterweight 54 is stressed, it will generate longitudinal jump, causing the horizontal pin 61 to break, and the hinged structure in the middle part of the horizontal rod will deform from a horizontal state to a V-shape. The counterweight 54 pulls the connecting rod 53 to stretch the pin 52 out of the pin hole 51, and the locking rod 412 is driven into the cylinder by the push spring 411 and inserted into the keyhole 321 of the piston rod 32 to lock the telescopic structure 3;

[0026] ——In order to enhance the stability of the locking device, the horizontal imprisonment body 1 and the vertical imprisonment body 2 may optionally include a positioning plate 11 and fastening bolts or anchoring steel bars 12 arranged on the bottom surface of the positioning plate 11, that is, the positioning plate 11 is attached to the building component, and the positioning is completed by the fastening bolts or anchoring steel bars 12. Of course, it can also be a building embedded part and processed at the same time; the surface of the positioning plate 11 has an articulated clip 13, which is respectively inserted into the base 311 of the cylinder 31 and the articulated tongue 14 at the end of the piston rod 32, and penetrated by the rotating shaft 15. This articulation method not only improves the connection strength, but also maintains the flexibility of relative rotation, and adapts to the displacement and deformation requirements of the bridge;

[0027] ——Furthermore, the end of the piston rod 32 in the cylinder 31 is provided with a limit block 312, which cooperates with a cover 313 provided at the mouth of the cylinder 31 to prevent the bridge from being displaced too much, that is, after the piston rod 32 is fully extended out of the cylinder 31, the limit block 312 inside it is restricted by the cover 313 at the mouth of the cylinder 31, and is not easy to separate and break, thereby improving the safety factor of the equipment;

[0028] ——Preferably, the cross-sectional shapes of the cylinder 31 and the piston rod 32 are consistent, and the cross-sectional shapes are circular, rectangular or polygonal. The circular cross-sectional shape can improve the flexibility of telescopic movement, and the rectangular or polygonal cross-sectional shape can prevent the piston and the cylinder 31 from twisting, so that the locking rod 412 can accurately enter and exit the keyhole 321 of the piston rod 32;

[0029] - Preferably, the shape of the lock hole 321 on the piston rod 32 is consistent with the cross-sectional shape of the lock rod 412 in the lock tube 41, and the shape is circular, rectangular or polygonal. After the lock rod 412 is inserted into the lock hole 321, it can be completely locked in place, and will not be pulled out or separated even if it is displaced, deformed or twisted at multiple angles;

[0030] ——According to different application scenarios, from the perspective of ease of processing and manufacturing, the keyhole 321 of the piston rod 32 and the pin hole 51 of the locking rod 412 are through holes or blind holes to adapt to the specific working conditions of different bridge structures.

Claims

1. A vibration-triggered locking device, characterized in that: It includes a horizontal imprisonment body and a vertical imprisonment body connected by a telescopic structure. The telescopic structure includes a cylinder and a piston rod arranged in the cylinder. The cylinder base and the piston rod end are respectively hinged to the horizontal imprisonment body and the vertical imprisonment body. The surface of the cylinder is provided with a plurality of lock holes for inserting lock tubes. The surface of the piston rod is provided with a plurality of keyholes. The lock tube is provided with a push spring, a lock rod and a trigger. The trigger includes pin holes respectively arranged on the surfaces of the lock tube and the lock rod and a pin column matched with the pin hole. The outer end of the pin column is connected to a counterweight through a connecting rod. The counterweight swings to pull the pin column off. The push spring is pre-compressed by a reset pull rod connected to the lock rod.

2. A vibration-triggered locking device according to claim 1, characterized in that: There are two lock holes on the cylinder for installing the lock tube. The connecting rod of the trigger includes a horizontal rod and a vertical rod. The two ends of the horizontal rod are respectively connected to the pins on the lock tube, and the counterweight is arranged at the end of the vertical rod.

3. A vibration-triggered locking device according to claim 2, characterized in that: The middle part of the horizontal rod is a hinged structure, horizontal pins are respectively connected to the horizontal rods on both sides of the hinged structure, and the vertical rods are connected to the horizontal pins.

4. A vibration-triggered locking device according to claim 2, characterized in that: The horizontal restraining body and the vertical restraining body both include a positioning plate and fastening bolts or anchoring steel bars arranged on the bottom surface of the positioning plate. The surface of the positioning plate has a hinged clip, which is respectively inserted into the hinged tongues of the cylinder base and the end of the piston rod and penetrated by a rotating shaft.

5. The vibration-triggered locking device according to claim 1, characterized in that: The end of the piston rod located in the cylinder is provided with a limit block, and the limit block cooperates with a sealing cover arranged at the mouth of the cylinder.

6. A vibration-triggered locking device according to claim 1, characterized in that: The cross-sectional shapes of the cylinder barrel and the piston rod are consistent, and the cross-sectional shapes are circular, rectangular or polygonal.

7. The vibration-triggered locking device according to claim 1, characterized in that: The shape of the keyhole on the piston rod is consistent with the cross-sectional shape of the lock rod in the lock tube, and its shape is circular, rectangular or polygonal.

8. The vibration-triggered locking device according to claim 1, characterized in that: The keyhole of the piston rod and the pin hole of the locking rod are through holes or blind holes.

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