Shock isolation lock and shock isolation device

Abstract

The application relates to a shock isolation lock and a shock isolation device, and belongs to the technical field of shock absorption control of engineering structures, which comprises a sensing assembly, a sensing moving assembly, a transmission assembly and a lock bolt assembly in a lock box. The sensing assembly comprises a supporting shell and a sensing ball, and the bottom surface of the supporting shell is provided with a perforation. The sensing ball rolls in the supporting shell. The sensing moving assembly is elastically connected in the lock box and the top end thereof is in contact with the sensing ball through the perforation. The transmission assembly comprises a three-link rod and a hinged rod. The three-link rod comprises a first rod segment, a second rod segment and a third rod segment which are integrally connected. The second rod segment is horizontally rotated in the lock box. The hinged rod is hinged at the bottom end of the sensing assembly and the other end thereof is hinged at the free end of the first rod segment. The bottom end of the lock bolt assembly rolls at the free end of the third rod segment. The sensing ball is first rolled on the inner bottom surface of the supporting shell which is inclined upwards from the center to the edge, and then the sensing moving assembly is elastically connected in the lock box. When the acceleration of the sensing ball exceeds the trigger point due to the earthquake action, the lock bolt assembly can be driven to move downwards, so that the shock isolation is released.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering structure shock absorption control, and particularly relates to a shock isolation lock and a shock isolation device. BACKGROUND

[0002] In the field of engineering structure shock absorption control, the stiffness design of the shock isolation device is crucial. If the stiffness of the shock isolation device is too high, it may not be able to provide sufficient isolation effect under the action of an earthquake, thus failing to achieve the ideal shock absorption goal. If the stiffness is too low, the device may be damaged when it faces non-seismic loads, such as wind action on power facilities or human pushing on an exhibit case. Therefore, an ideal shock isolation device should exhibit high stiffness in the normal use state to resist environmental excitations that may be encountered in daily use and avoid unnecessary vibration of the shock isolation system. Under the action of an earthquake, when the acceleration of the isolated structure is lower than the set triggering threshold, the shock isolation device should remain in the locked state to limit the movement of the structure and prevent excessive displacement. Once the acceleration caused by the earthquake exceeds the triggering point, the triggering mechanism in the shock isolation device will respond quickly to unlock the device and allow the shock isolation system to play its role in shock absorption. After the earthquake, the locked state of the shock isolation device can be restored by resetting the triggering device to ensure the stability and safety of the structure under non-seismic conditions.

[0003] At present, existing shock isolation locking devices, such as ① Patent No. CN201611202163.3, disclose a locking, unlocking, and resetting scheme for a cultural relic shock isolation device, which mainly realizes the unlocking and resetting functions through a series of parts such as fine ropes, pulley blocks, and balance knife-edge trigger levers. This scheme has high sensitivity but complex structure and high failure rate. ② Patent No. CN201810027052.6 discloses an adjustable locking device and an improved unlocking method for a shock isolation device in the field of exhibit case and cultural relic shock protection technology. The principle is to use the overturning of an inertia block to trigger the unlocking mechanism. This design significantly improves the traditional unlocking method, but the reliability of this technology in actual application still needs further verification and consideration. ③ Patent No. CN202110644981.3 discloses an overturning type horizontal shock isolation trigger, which realizes the unlocking function of the trigger by overturning the supporting leg and pulling out the lock tongue from the lock core. The unlocking acceleration error of this scheme is large, and it cannot achieve the expected effect in actual application. ④ Patent No. CN202322293171.5 discloses an electric control type shock isolation trigger device, which realizes the unlocking and locking of the trigger device by controlling the controller to drive the electromagnetic lock.

[0004] Therefore, how to design a small volume, pure mechanical structure, no need for power, no need for electrical components, with reset function and can realize accurate acceleration trigger shock isolation locking device is the problem that the person skilled in the art needs to solve urgently. SUMMARY

[0005] The application designs a shock isolation lock and a shock isolation device for switching the locking and unlocking states of the shock isolation device. In the normal use state, it exhibits high stiffness to resist the environmental excitation that may be encountered in daily use and avoid unnecessary vibration of the shock isolation system. Under the action of an earthquake, when the acceleration of the isolated structure is lower than the set trigger threshold, the trigger device should remain in the locked state to limit the movement of the structure and prevent excessive displacement. Once the acceleration exceeds the trigger point due to the action of an earthquake, the trigger mechanism will quickly respond to unlock the device and allow the shock isolation system to play its role in shock absorption.

[0006] The technical scheme for solving the above technical problem is as follows: a shock isolation lock, comprising a lock box and a sensing assembly, a sensing moving assembly, a transmission assembly and a lock tongue assembly located in the lock box, a lock hole is arranged on the top surface of the lock box;

[0007] The sensing assembly comprises a supporting shell and a sensing ball, the top end of the supporting shell is fixed to the inner top surface of the lock box, the inner bottom surface of the supporting shell is arranged to be inclined upward from the center to the edge, and a through hole is arranged at the lowest part of the inner bottom surface; the sensing ball rolls in the supporting shell;

[0008] The sensing moving assembly is elastically connected in the lock box along the height direction and the top end of the sensing moving assembly can be in contact with the sensing ball through the through hole to move upward after the sensing ball senses the rolling of an earthquake;

[0009] The transmission assembly comprises a three-link rod and a hinged rod, the three-link rod comprises a first rod segment, a second rod segment and a third rod segment which are integrally connected and arranged perpendicular to each other, the second rod segment is horizontally rotated on the inner bottom surface of the lock box through a bearing seat; one end of the hinged rod is hinged to the bottom end of the sensing assembly and the other end of the hinged rod is hinged to the free end of the first rod segment;

[0010] The bottom end of the lock tongue assembly rolls on the free end of the third rod segment and the top end of the lock tongue assembly is retracted into the lock hole along with the rotation of the third rod segment.

[0011] The application has the beneficial effect of improving the structure of the traditional shock isolation lock, rolling the sensing ball on the inner bottom surface of the supporting shell which is inclined upward from the center to the edge, and then elastically connecting the sensing moving assembly in the lock box. When the acceleration exceeds the trigger point due to the action of an earthquake, the sensing ball rolls and is separated from the sensing moving assembly, the sensing moving assembly moves upward, the hinged rod moves upward, the first rod segment, the second rod segment and the third rod segment rotate, and the bottom end of the lock tongue assembly rolls on the free end of the third rod segment, which can drive the lock tongue assembly to retract into the lock hole.

[0012] Based on the technical scheme, the application can be further improved as follows.

[0013] Further, the moving component comprises a top rod, a limiting ring and a balance spring, the lock box is fixed with a horizontal fixed plate below the supporting shell, and the fixed plate is fixed with a guide sliding hole; the top rod slides in the guide sliding hole, and the top end of the top rod can touch the induction ball through the perforation; the limiting ring is sleeved on the top rod; the balance spring is sleeved on the top rod, and the top end of the balance spring is in contact with the limiting ring, and the bottom end of the balance spring is in contact with the supporting rod A; one end of the hinged rod is hinged to the bottom end of the top plate.

[0014] The above further beneficial effects are that the top rod is first slid in the guide sliding hole of the fixed plate, and then the balance spring is sleeved on the top rod, and since one end of the balance spring is in contact with the limiting ring sleeved on the top rod and the other end of the balance spring is in contact with the fixed plate, the top rod can be pushed to move upward after the top rod is separated from the induction ball.

[0015] Further, the lock tongue assembly comprises a lock tongue, a blocking ring and a reset spring, the lock box is fixed with a horizontal supporting plate below the lock hole, and the supporting plate is provided with a limiting sliding hole, the lock tongue slides in the limiting sliding hole, and the bottom end of the lock tongue can be in rolling contact with the free end of the third rod segment, and the top end of the lock tongue can extend into the lock slot through the lock hole; the blocking ring is sleeved on the outside of the lock tongue; the reset spring is sleeved on the outside of the lock tongue, and the top end of the reset spring is in contact with the supporting plate, and the bottom end of the reset spring is in contact with the blocking ring.

[0016] The above further beneficial effects are that the lock tongue is first slid in the limiting sliding hole, and then the reset spring is sleeved on the outside of the lock tongue, and since one end of the reset spring is in contact with the blocking ring sleeved on the outside of the lock tongue and the other end of the reset spring is in contact with the blocking plate, the lock tongue can be pushed to move downward after the third rod segment is rotated, so that the lock tongue is retracted into the lock hole.

[0017] Further, the reset handle is further provided, and the side surface of the lock box is provided with a long hole arranged along the sliding direction of the lock tongue; one end of the reset handle is fixed on the blocking ring, and the other end of the reset handle slides out of the long hole.

[0018] The above further beneficial effects are that the other end of the reset handle slides out of the long hole, and when the earthquake vibration is eliminated, the reset handle can be pushed upward to realize the reset of the induction ball.

[0019] Further, the reset rotating shaft is further provided, and the side surface of the lock box is provided with an arc-shaped hole arranged along the rotating direction of the third rod segment; one end of the reset rotating shaft is fixed on the third rod segment, and the other end of the reset rotating shaft slides through the arc-shaped hole.

[0020] In addition, the application provides a shock isolation device, which is characterized by comprising an upper plate, a lower plate, a lock plate and the shock isolation lock, wherein the lower plate is located below the upper plate; the lock plate is fixed to the edge of the upper plate and has a lock groove on the bottom surface; the lock box is fixed to the edge of the lower plate below the lock plate and has a lock hole opposite to the lock groove; the lock bolt assembly retracted from the lock hole exits the lock groove, and the upper plate and the lower plate are released.

[0021] Specific process description:

[0022] Initial locking state: the inductive ball is stably arranged on the inner bottom surface of the shell and is inclined from the center to the edge in sequence, the top rod is pressed to a low position, the third rod segment of the three-link rod is supported by the rolling contact of the ball with the bottom end of the lock bolt, the lock bolt is inserted into the lock groove of the lock plate through the lock hole under the guidance of the limiting sliding hole of the support plate, and the shock isolation system is in a rigid locking state. The balance spring is compressed to store energy under the compression of the top rod, and provides driving force for the unlocking action.

[0023] Triggering unlocking process: when the horizontal acceleration of the earthquake reaches a preset threshold, the inductive ball rolls along the inclined direction of the inner bottom surface of the shell, is separated from the top rod, the top rod vertically moves upward under the driving of the balance spring, and drives the first rod segment of the three-link rod to move upward through the hinged rod. The three-link rod rotates around the second rod segment, the top of the third rod segment and the ball at the bottom of the lock bolt produce tangential displacement, the contact point slides along the involute trajectory until completely separated. After losing the support of the third rod segment, the lock bolt vertically moves downward along the limiting sliding hole of the support plate under the pressure of the reset spring, is separated from the lock plate, and the shock isolation system enters the shock isolation state.

[0024] After the earthquake ends, the locking state is reconstructed through the following steps: the operator pulls up the reset handle, the lock bolt compresses the reset spring and rises to the initial support position along the limiting sliding hole of the support plate. The reset shaft is synchronously rotated to drive the three-link rod to rotate reversely around the second rod segment, the top of the third rod segment is re-embedded in the ball at the bottom of the lock bolt to form rolling contact support. The lock bolt is engaged with the lock plate again, the top rod is reset to the lowest position on the inner bottom surface of the shell under the action of the gravity of the inductive ball, the balance spring is re-energized, and the device returns to the initial locking state. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the shock isolation device of the application;

[0026] Figure 2 It is a structural schematic diagram of the internal structure of the shock isolation lock of the application;

[0027] Figure 3 It is a structural schematic diagram of the structure that the inductive ball presses the top rod in the shock isolation lock of the application;

[0028] Figure 4 It is a structural schematic diagram of the structure that the inductive ball separates from the top rod in the shock isolation lock and the shock isolation device of the application;

[0029] Figure 5 This is a schematic diagram of the moving component structure in a vibration isolation lock and vibration isolation device according to the present invention;

[0030] Figure 6 This is a schematic diagram of the transmission component structure in a vibration isolation lock and vibration isolation device according to the present invention;

[0031] Figure 7 This is a schematic diagram of the locking tongue assembly in a vibration isolation lock and vibration isolation device according to the present invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Lock box; 11. Lock hole; 12. Fixed plate; 13. Support plate; 14. Long strip hole; 15. Arc hole; 2. Sensing component; 21. Support shell; 22. Sensing ball; 3. Motion component; 31. Top rod; 32. Limiting ring; 33. Balance spring; 4. Transmission component; 41. Three-bar linkage; 411. First rod segment; 412. Second rod segment; 413. Third rod segment; 42. Hinge rod; 5. Lock tongue assembly; 51. Lock tongue; 52. Retaining ring; 53. Return spring; 6. Bearing seat; 7. Return handle; 8. Return shaft; 9. Upper plate; 10. Lower plate; 16. Lock plate. Detailed Implementation

[0034] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0035] like Figure 2 As shown, a vibration isolation lock includes: a lock box 1 and a sensing component 2, a moving component 3, a transmission component 4 and a lock tongue component 5 located inside the lock box 1. The top surface of the lock box 1 is provided with a lock hole 11.

[0036] The sensing component 2 includes a housing 21 and a sensing ball 22. The top of the housing 21 is fixed to the inner top surface of the lock box 1, and its inner bottom surface is arranged to slope upward from the center to the edge. A perforation is provided at the lowest point of its inner bottom surface. The sensing ball 22 rolls inside the housing 21.

[0037] The sensing component 3 is elastically connected to the lock box 1 along the height direction, and its top end passes through the perforation and can touch the sensing ball 22, so that it can move upward after the sensing ball 22 senses the earthquake and rolls.

[0038] The transmission assembly 4 includes a three-link 41 and a hinged rod 42. The three-link 41 includes a first rod segment 411, a second rod segment 412, and a third rod segment 413 that are integrally connected and arranged perpendicularly to each other. The second rod segment 412 rotates horizontally on the inner bottom surface of the lock box 1 via a bearing seat 6. One end of the hinged rod 42 is hinged to the bottom end of the sensing assembly 2, and the other end is hinged to the free end of the first rod segment 411.

[0039] The bottom end of the latch assembly 5 rolls on the free end of the third rod segment 413 and its top end retracts into the lock hole 11 as the third rod segment 413 rotates.

[0040] like Figure 4 As shown, in some specific embodiments, the sensing component 3 may include a top rod 31, a limiting ring 32, and a balance spring 33. A horizontally arranged fixed plate 12 is fixed below the corresponding support shell 21 in the lock box 1, and a guide sliding hole is fixed on the fixed plate 12. The top rod 31 slides in the guide sliding hole and its top end can pass through the hole and touch the sensing ball 22. The limiting ring 32 is fixed on the top rod 31. The balance spring 33 is sleeved on the top rod 31 and its top end abuts against the limiting ring 32, and its bottom end abuts against the support rod A. One end of the hinge rod 42 is hinged to the bottom end of the top plate.

[0041] like Figure 7 As shown, in some specific embodiments, the latch assembly 5 may include a latch 51, a retaining ring 52, and a return spring 53. A horizontally arranged support plate 13 is fixed below the lock hole 11 in the lock box 1, and the support plate 13 is provided with a limiting sliding hole. The latch 51 slides in the limiting sliding hole and its bottom end can roll into contact with the free end of the third rod segment 413. Its top end can pass through the lock hole 11 and extend into the lock groove. The retaining ring 52 is sleeved on the outside of the latch 51. The return spring 53 is sleeved on the outside of the latch 51 and its top end contacts the support plate 13, and its bottom end contacts the retaining ring 52.

[0042] like Figure 2 As shown, in some specific embodiments, a reset handle 7 may also be included. The side of the lock box 1 is provided with an elongated hole 14 arranged along the sliding direction of the lock tongue 51. One end of the reset handle 7 is fixed on the retaining ring 52 and the other end slides out of the elongated hole 14.

[0043] like Figure 2 As shown, in some specific embodiments, a reset shaft 8 may also be included, and the side of the lock box 1 is provided with an arc-shaped hole 15 arranged along the rotation direction of the third rod segment 413; one end of the reset shaft 8 is fixed on the third rod segment 413 and the other end slides through the arc-shaped hole 15.

[0044] like Figure 1 As shown, a vibration isolation device is provided, including: an upper plate 9, a lower plate 10, a locking plate 16 and a vibration isolation lock, wherein the lower plate 10 is located below the upper plate 9; the locking plate 16 is fixed to the edge of the upper plate 9 and has a locking groove on its bottom surface; the lock box 1 is fixed to the edge of the lower plate 10 corresponding to the lower part of the locking plate 16, and the lock hole 11 is arranged opposite to the lock groove; the lock tongue assembly 5 retracts the lock hole 11 and exits the lock groove, releasing the upper plate 9 and the lower plate 10.

[0045] The above merely preferred embodiments of the present application and are not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A shock insulating lock, characterized in that, The utility model provides a lock box and the earthquake sensing device of lock box, including: Lock box (1) and inductive component (2), sense component (3), transmission component (4) and lock bolt component (5) in the lock box (1), the top surface of lock box (1) is equipped with lock hole (11); The inductive component (2) includes the shell (21) and inductive ball (22), the top end of shell (21) is fixed in the inner top surface of lock box (1) and its inner bottom surface is arranged to the edge direction from the center upwardly inclined in turn, and the lowest place of its inner bottom surface is equipped with the perforation, inductive ball (22) rolls in shell (21); The sense component (3) is elastically connected in lock box (1) along the height direction and its top end can top touch inductive ball (22) through the perforation to move upwardly after rolling with inductive ball (22) and sensing earthquake, the sense component (3) includes the top rod (31), limit ring (32) and balance spring (33), the lock box (1) is fixed with the horizontal arrangement solid plate (12) below inductive component (2) and is fixed with the guide sliding hole on solid plate (12), the top rod (31) slides in the guide sliding hole and its top end can top touch inductive ball (22) through the perforation, limit ring (32) is fixed on the top rod (31), balance spring (33) is set on the top rod (31) and its top end is in contact with limit ring (32), and its bottom end is in contact with solid plate (12); The transmission component (4) includes three connecting rods (41) and articulated rod (42), the three connecting rods (41) include first rod segment (411), second rod segment (412) and third rod segment (413) integrally connected and arranged perpendicular to each other, the second rod segment (412) is horizontally rotated on the inner bottom surface of lock box (1) through bearing seat (6), one end of articulated rod (42) is hinged on the bottom end of top rod (31) of sense component (3) and the other end is hinged on the free end of first rod segment (411); The bottom end of lock bolt component (5) rolls on the free end of third rod segment (413) and its top end is retracted into lock hole (11) along with the rotation of third rod segment (413).

2. A shock insulating lock according to claim 1, wherein The lock bolt component (5) includes lock bolt (51), stop ring (52) and return spring (53), the lock box (1) is fixed with the horizontal arrangement support plate (13) below lock hole (11) and is equipped with the limiting sliding hole on support plate (13), the lock bolt (51) slides in the limiting sliding hole and its bottom end can be in rolling contact with the free end of third rod segment (413), and its top end can extend into the lock slot through lock hole (11), the stop ring (52) is fixed on the outside of lock bolt (51), and the return spring (53) is set on the outside of lock bolt (51) and its top end is in contact with support plate (13), and its bottom end is in contact with stop ring (52).

3. A shock insulating lock according to claim 2, wherein, Further comprising a reset handle (7), the lock box (1) is provided with a long hole (14) arranged along the sliding direction of the lock tongue (51) on the side; one end of the reset handle (7) is fixed on the blocking ring (52) and the other end is slid through the long hole (14).

4. A shock insulating lock according to claim 2, wherein Further comprising a reset rotating shaft (8), the lock box (1) is provided with an arc-shaped hole (15) arranged along the rotating direction of the third rod segment (413) on the side; one end of the reset rotating shaft (8) is fixed on the third rod segment (413) and the other end is slid through the arc-shaped hole (15).

5. A seismic isolation device, characterized by Further comprising: an upper plate (9), a lower plate (10), a lock plate (16) and the shock isolation lock according to any one of claims 1-4, the lower plate (10) is below the upper plate (9); the lock plate (16) is fixed on the edge of the upper plate (9) and the bottom surface is provided with a lock groove; the lock box (1) is fixed on the edge of the lower plate (10) below the lock plate (16), the lock hole (11) is arranged opposite to the lock groove; the lock tongue assembly (5) retracted from the lock hole (11) exits the lock groove, releasing the upper plate (9) and the lower plate (10).

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