Shock insulation lock and shock insulation device

Abstract

The invention relates to a shock insulation lock and a shock insulation device, and belongs to the technical field of shock absorption control of engineering structures, the shock insulation lock comprises a sensing assembly, a sensing assembly, a transmission assembly and a spring bolt assembly which are located in a lock box, the sensing assembly comprises a supporting shell and a sensing ball, and a through hole is formed in the bottom surface of the supporting shell; the induction ball rolls in the supporting shell; the sensing assembly is elastically connected into the lock box, and the top end of the sensing assembly penetrates through the through hole and abuts against the sensing ball; the transmission assembly comprises a three-connecting rod and a hinge rod, the three-connecting rod comprises a first rod section, a second rod section and a third rod section which are integrally connected, and the second rod section horizontally rotates in the lock box; one end of the hinge rod is hinged to the bottom end of the sensing assembly and the other end is hinged to the free end of the first rod section; the bottom end of the spring bolt assembly rolls at the free end of the third rod section. The sensing ball rolls on the inner bottom face, sequentially inclining upwards from the center to the edge, of the supporting shell, then the sensing assembly is elastically connected into the lock box, when the acceleration of the sensing ball exceeds a trigger point due to the earthquake action, the spring bolt assembly can be driven to move downwards, and unlocking shock isolation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic control for engineering structures, and particularly to an isolation lock and an isolation device. Background Art

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

[0003] Currently, existing isolation locking devices, such as ① the patent with application number CN201611202163.3, discloses a scheme for locking, unlocking, and resetting of a cultural relic isolation device, which mainly realizes the unlocking and resetting functions through a series of parts such as thin ropes, pulley blocks, and balance knife-edge type trigger levers. This scheme has a high sensitivity, but a complex structure and a high failure rate. ② The patent with application number CN201810027052.6 discloses an improved method for an adjustable locking device and unlocking of an isolation device in the technical field of shock protection for display cabinets and cultural relics. Its principle is to trigger the unlocking mechanism by the overturning of an inertia block. This design has significantly improved the traditional unlocking method, but the reliability of this technology still needs to be further verified and considered in practical applications. ③ The patent with application number CN202110644981.3 discloses an overturning type horizontal isolation trigger, which realizes the unlocking function of the trigger by the overturning of the support legs and the extraction of the lock tongue from the lock core. This scheme has a large error in unlocking acceleration and cannot achieve the expected effect in practical applications. ④ The patent with application number CN202322293171.5 discloses an electronically controlled isolation trigger device, which realizes the unlocking and locking of the trigger device by controlling a driving device to drive an electromagnetic lock. This scheme requires a power supply to ensure the smooth unlocking of the electromagnetic lock in practical applications.

[0004] Therefore, how to design a shock isolation locking device with a small size, a pure mechanical structure, no need for electricity, no electrical components, a reset function, and capable of achieving accurate acceleration triggering is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The present invention designs a shock isolation lock and a shock isolation device for switching between the locked and unlocked states of the shock isolation device. In the normal use state, it exhibits a high stiffness to resist the environmental excitation that may be encountered during daily use and avoid causing unnecessary vibrations 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 triggering device should remain locked to limit the movement of the structure and prevent excessive displacement. Once the earthquake causes the acceleration to exceed the trigger point, the triggering mechanism will quickly respond to unlock the device and allow the shock isolation system to play its shock absorption role.

[0006] The technical solution of the present invention to solve the above technical problems is as follows. A shock isolation lock includes: a lock box and an induction assembly, a moving assembly, a transmission assembly, and a lock tongue assembly located in the lock box. A lock hole is provided on the top surface of the lock box;

[0007] The induction assembly includes a support shell and an induction ball. The top end of the support shell is fixed to the inner top surface of the lock box, and its inner bottom surface is arranged to incline upward successively from the center to the edge. A perforation is provided at the lowest point of its inner bottom surface; the induction ball rolls inside the support shell;

[0008] The moving assembly is elastically connected inside the lock box in the height direction, and its top end passes through the perforation and can abut against the induction ball to move upward as the induction ball rolls after sensing an earthquake;

[0009] The transmission assembly includes a three-link rod and a hinged rod. The three-link rod includes a first rod segment, a second rod segment, and a third rod segment that are integrally connected and arranged perpendicular to each other. The second rod segment rotates horizontally 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 induction assembly, and the other end 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 its top end retracts into the lock hole as the third rod segment rotates.

[0011] The beneficial effect of the present invention is: improving the structure of the traditional shock isolation lock. First, the induction ball rolls on the inner bottom surface of the support shell that inclines upward successively from the center to the edge, and then the moving assembly is elastically connected inside the lock box. After the earthquake causes the acceleration to exceed the trigger point, the induction ball rolls and gets out of contact with the moving assembly. The moving assembly moves upward, driving the hinged rod to move upward, driving the first rod segment, the second rod segment, and the third rod segment to rotate. Since the bottom end of the lock tongue assembly rolls on the free end of the third rod segment, the lock tongue assembly can be driven to retract into the lock hole.

[0012] Based on the above technical solutions, the present invention can be further improved as follows.

[0013] Further, the sensing component includes a push rod, a limiting ring, and a balance spring. A horizontally arranged fixed plate is fixed below the shell corresponding to the lock box, and a guiding slide hole is fixed on the fixed plate; the push rod slides in the guiding slide hole, and its top end can pass through the perforation and touch the sensing ball; the limiting ring is fixedly sleeved on the push rod; the balance spring is sleeved on the push rod, its top end abuts against the limiting ring, and its bottom end abuts against the strut A; one end of the hinge rod is hinged to the bottom end of the top plate.

[0014] The beneficial effect of the above further improvement is: First, slide the push rod in the guiding slide hole of the fixed plate, and then sleeve the balance spring outside the push rod. Since one end of the balance spring contacts the limiting ring sleeved on the push rod and the other end contacts the fixed plate, it can push the push rod upward after the push rod is separated from the sensing ball.

[0015] Further, the locking tongue component includes a locking tongue, a retaining ring, and a return spring. A horizontally arranged support plate is fixed below the lock box corresponding to the lock hole, and a limiting slide hole is provided on the support plate. The locking tongue slides in the limiting slide hole, and its bottom end can rollingly contact the free end of the third rod segment, and its top end can pass through the lock hole and extend into the lock groove; the retaining ring is fixedly sleeved on the locking tongue; the return spring is sleeved on the locking tongue, its top end contacts the support plate, and its bottom end contacts the retaining ring.

[0016] The beneficial effect of the above further improvement is: First, slide the locking tongue in the limiting slide hole, and then sleeve the return spring outside the locking tongue. Since one end of the return spring contacts the retaining ring sleeved on the locking tongue and the other end contacts the baffle, it can push the locking tongue downward after the third rod segment rotates, so that the locking tongue retracts into the lock hole.

[0017] Further, it further includes a reset handle. A long strip hole is provided on the side of the lock box along the sliding direction of the locking tongue; one end of the reset handle is fixed on the retaining ring, and the other end slides out of the long strip hole.

[0018] The beneficial effect of the above further improvement is: Slide the other end of the reset handle out of the long strip hole. After the earthquake vibration is eliminated, the reset handle can be pushed upward to realize the reset of the sensing ball.

[0019] Further, it further includes a reset rotating shaft. An arc-shaped hole is provided on the side of the lock box 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 slides through the arc-shaped hole.

[0020] In addition, a seismic isolation device is provided, which is characterized by comprising an upper plate, a lower plate, a locking plate and the seismic isolation lock as described above. The lower plate is located below the upper plate. The locking plate is fixed to the edge of the upper plate and a locking groove is provided on its bottom surface. The lock box is fixed to the edge of the lower plate corresponding to the lower part of the locking plate, and the lock hole is arranged opposite to the locking groove. The lock tongue assembly retracted into the lock hole withdraws from the locking groove, releasing the upper plate and the lower plate.

[0021] Description of the specific process:

[0022] Initial locking state: The sensing ball is stably placed in the inner bottom surface of the support shell that slopes upward in sequence from the center to the edge, and the pressing ejector rod is in the low position. The top of the third rod segment of the three-link rod forms a rolling contact support with the bottom end of the lock tongue through a ball. The lock tongue passes through the lock hole and inserts into the locking groove of the locking plate under the guidance of the limiting sliding hole of the supporting plate, and the seismic isolation system is in a rigid locking state. The balance spring is compressed by the ejector rod to store energy and provides driving force for the unlocking action.

[0023] Triggering the unlocking process: When the horizontal acceleration of the earthquake reaches the preset threshold, the sensing ball rolls along the inclined direction of the inner bottom surface of the support shell, disengaging from the pressing of the ejector rod. The ejector rod moves vertically upward under the drive of the balance spring, driving the first rod segment of the three-link rod to move upward through the hinge rod. The three-link rod rotates around the axis of the second rod segment, and a tangential displacement is generated between the top of the third rod segment and the ball at the bottom of the lock tongue, and the contact point slides along the involute trajectory until it is completely separated. After losing the support of the third rod segment, the lock tongue moves vertically downward along the limiting sliding hole of the supporting plate under the pressure of the return spring and separates from the locking plate, and the seismic isolation system enters the seismic isolation state.

[0024] After the earthquake ends, the locking state is restored through the following steps: The operator pulls up the reset handle upward, and the lock tongue compresses the return spring and rises along the limiting sliding hole of the supporting plate to the initial support position. Synchronously rotate the reset rotating shaft to drive the three-link rod to rotate reversely around the second rod segment, and the top of the third rod segment is re-embedded at the ball at the bottom of the lock tongue to form a rolling contact support. The lock tongue meshes with the locking plate again, the ejector rod is reset to the lowest position of the inner bottom surface of the support shell under the action of the gravity of the sensing ball, the balance spring stores energy again, and the device returns to the initial locking state. Description of the drawings

[0025] Figure 1 It is a schematic structural diagram of a seismic isolation device of the present invention;

[0026] Figure 2 It is a schematic internal structure diagram of a seismic isolation lock of the present invention;

[0027] Figure 3 It is a schematic structural diagram of the sensing ball pressing on the ejector rod in a seismic isolation lock of the present invention;

[0028] Figure 4 It is a schematic structural diagram of the sensing ball disengaging from the ejector rod in a seismic isolation lock and a seismic isolation device of the present invention;

[0029] Figure 5 This is a schematic structural diagram of the moving component in an isolation lock and an isolation device of the present invention;

[0030] Figure 6 This is a schematic structural diagram of the transmission component in an isolation lock and an isolation device of the present invention;

[0031] Figure 7 This is a schematic structural diagram of the lock tongue component in an isolation lock and an isolation device of the present invention.

[0032] In the drawings, the list of components represented by each reference numeral is as follows:

[0033] 1. Lock box, 11. Lock hole, 12. Fixed plate, 13. Support plate, 14. Long strip hole, 15. Arc hole, 2. Induction component, 21. Support shell, 22. Induction ball, 3. Moving component, 31. Thrust rod, 32. Limit ring, 33. Balance spring, 4. Transmission component, 41. Three-link rod, 411. First rod section, 412. Second rod section, 413. Third rod section, 42. Hinge rod, 5. Lock tongue component, 51. Lock tongue, 52. Retaining ring, 53. Return spring, 6. Bearing seat, 7. Return handle, 8. Return rotating shaft, 9. Upper plate, 10. Lower plate, 16. Lock plate. Detailed implementation manners

[0034] The principles and features of the present invention will be described below in conjunction with the drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0035] As Figure 2 shown, an isolation lock includes: a lock box 1 and an induction component 2, a moving component 3, a transmission component 4 and a lock tongue component 5 located inside the lock box 1. A lock hole 11 is provided on the top surface of the lock box 1;

[0036] The induction component 2 includes a support shell 21 and an induction ball 22. The top end of the support shell 21 is fixed to the inner top surface of the lock box 1, and its inner bottom surface is arranged to incline upward in sequence from the center to the edge direction, and a through hole is provided at the lowest position of its inner bottom surface; the induction ball 22 rolls inside the support shell 21;

[0037] The moving component 3 is elastically connected inside the lock box 1 in the height direction, and its top end passes through the through hole and can be abutted against the induction ball 22 to move upward as the induction ball 22 senses the earthquake and rolls;

[0038] The transmission component 4 includes a three-link rod 41 and a hinge rod 42. The three-link rod 41 includes a first rod section 411, a second rod section 412 and a third rod section 413 that are integrally connected and arranged perpendicular to each other. The second rod section 412 rotates horizontally on the inner bottom surface of the lock box 1 through a bearing seat 6; one end of the hinge rod 42 is hinged to the bottom end of the induction component 2, and the other end is hinged to the free end of the first rod section 411;

[0039] The bottom end of the lock tongue 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] As Figure 4 shown, in some specific embodiments, the moving assembly 3 may include a push rod 31, a limit ring 32, and a balance spring 33. A fixed plate 12 arranged horizontally is fixed below the corresponding support shell 21 of the lock box 1, and a guiding sliding hole is fixed on the fixed plate 12; the push rod 31 slides in the guiding sliding hole, and its top end can pass through the perforation and touch the sensing ball 22; the limit ring 32 is fixedly sleeved on the push rod 31; the balance spring 33 is sleeved on the push rod 31, its top end abuts against the limit 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] As Figure 7 shown, in some specific embodiments, the lock tongue assembly 5 may include a lock tongue 51, a retaining ring 52, and a return spring 53. A support plate 13 arranged horizontally is fixed below the corresponding lock hole 11 of the lock box 1, and a limiting sliding hole is provided on the support plate 13. The lock tongue 51 slides in the limiting sliding hole, its bottom end can rollingly contact the free end of the third rod segment 413, and its top end can pass through the lock hole 11 and extend into the lock groove; the retaining ring 52 is fixedly sleeved outside the lock tongue 51; the return spring 53 is sleeved outside the lock tongue 51, its top end contacts the support plate 13, and its bottom end contacts the retaining ring 52.

[0042] As Figure 2 shown, in some specific embodiments, it may further include a reset handle 7. A long slot 14 arranged along the sliding direction of the lock tongue 51 is provided on the side of the lock box 1; one end of the reset handle 7 is fixed on the retaining ring 52, and the other end slides out of the long slot 14.

[0043] As Figure 2 shown, in some specific embodiments, it may further include a reset rotating shaft 8. An arc-shaped hole 15 arranged along the rotating direction of the third rod segment 413 is provided on the side of the lock box 1; one end of the reset rotating shaft 8 is fixed on the third rod segment 413, and the other end slides through the arc-shaped hole 15.

[0044] As Figure 1 shown, a shock isolation device is provided, including: an upper plate 9, a lower plate 10, a lock plate 16, and a shock isolation lock. The lower plate 10 is located below the upper plate 9; the lock plate 16 is fixed on the edge of the upper plate 9, and a lock groove is provided on its bottom surface; the lock box 1 is fixed on the edge of the lower plate 10 corresponding to the lower part of the lock plate 16, and the lock hole 11 and the lock groove are arranged opposite to each other; the lock tongue assembly 5 retracted into the lock hole 11 withdraws from the lock groove, releasing the upper plate 9 and the lower plate 10.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A seismic isolation lock, characterized in that: include: A lock box (1) and a sensing component (2), a moving component (3), a transmission component (4) and a lock tongue component (5) located in the lock box (1), wherein a lock hole (11) is provided on the top surface of the lock box (1); The sensing component (2) comprises a support shell (21) and a sensing ball (22); the top end of the support shell (21) is fixed to the inner top surface of the lock box (1) and the inner bottom surface thereof is arranged to be inclined upward from the center to the edge in sequence, and a perforation is provided at the lowest point of the inner bottom surface; the sensing ball (22) rolls in the support shell (21); The moving component (3) is elastically connected to the lock box (1) along the height direction, and its top end passes through the through hole and can touch the sensing ball (22), so as to move upward after the sensing ball (22) senses the earthquake and rolls; The transmission assembly (4) comprises three connecting rods (41) and an articulated rod (42); the three connecting rods (41) comprise a first rod segment (411), a second rod segment (412) and a third rod segment (413) which 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 articulated rod (42) is hinged to the bottom end of the sensing assembly (2) and the other end thereof is hinged to the free end of the first rod segment (411); The bottom end of the locking tongue assembly (5) rolls on the free end of the third rod segment (413) and the top end thereof retracts into the locking hole (11) as the third rod segment (413) rotates.

2. A seismic isolation lock and seismic isolation device according to claim 1, characterized in that: The moving assembly (3) comprises a push rod (31), a limiting ring (32) and a balancing spring (33); a horizontally arranged fixing plate (12) is fixed below the lock box (1) corresponding to the support shell (21), and a guide sliding hole is fixed on the fixing plate (12); the push rod (31) slides in the guide sliding hole, and its top end can pass through the through hole and touch the sensing ball (22); the limiting ring (32) is sleeved on the push rod (31); the balancing spring (33) is sleeved on the push rod (31), and its top end contacts the limiting ring (32), and its bottom end contacts the support rod A; one end of the hinged rod (42) is hinged to the bottom end of the push plate.

3. A seismic isolation lock and seismic isolation device according to claim 2, characterized in that: The lock tongue assembly (5) comprises a lock tongue (51), a retaining ring (52) and a return spring (53); a horizontally arranged support plate (13) is fixed below the lock box (1) corresponding to the lock hole (11), and a limiting sliding hole is provided on the support plate (13); the lock tongue (51) slides in the limiting sliding hole and its bottom end can roll in contact with the free end of the third rod segment (413), and 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 lock tongue (51); the return spring (53) is sleeved on the outside of the lock tongue (51), and its top end contacts the support plate (13), and its bottom end contacts the retaining ring (52).

4. A seismic isolation lock and seismic isolation device according to claim 3, characterized in that: It also includes a reset handle (7), and a side surface 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 thereof slides through the elongated hole (14).

5. A seismic isolation lock and seismic isolation device according to claim 3, characterized in that: It also includes a reset shaft (8), and a side surface 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 thereof slides through the arc-shaped hole (15).

6. A seismic isolation device, characterized in that: include: An upper plate (9), a lower plate (10), a locking plate (16) and a seismic isolation lock as described in any one of claims 1 to 5, 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 a locking groove is provided on its bottom surface; the lock box (1) is fixed to the edge of the lower plate (10) corresponding to the bottom of the locking plate (16), and the locking hole (11) is arranged opposite to the locking groove; the locking tongue assembly (5) retracts the locking hole (11) and exits the locking groove, releasing the upper plate (9) and the lower plate (10).

Images