Seismograph

Abstract

The invention relates to a seismograph which can roughly detect the direction of a seismic source. The center position of the device is a column made of a connecting rod pendulum with a high gravity center, the column penetrates through a hole of a shelf, eight radial grooves are formed in the center of the bottom of the column, namely eight combined mechanisms are formed by eight dragon machines made of multi-stage levers and levers decorated by dragon heads and trigger mechanisms in the eight grooves, and the piston is jointly dragged through a pulley block. And the column is suspended through the piston. A safety mechanism capable of controlling the dragon machine is pulled by a pulley at the upper end of the piston. The movement distance of the lower end of the column is far larger than the shaking distance of the gravity center of the column, so that weak earthquakes are detected. When the column shakes, the lower end of the column touches the trigger mechanisms in the eight channels, so that the dragon machine and the multi-stage lever lose restriction and rotate, finally, the rope for pulling the piston slides through the pulley and is loosened, and the column falls on the shelf and does not touch other mechanisms any more. Meanwhile, the piston releases a safety mechanism through a pulley to prevent other mechanisms from false alarm.

Description

Technical Field

[0001] The present invention is a seismic instrument which can roughly determine the direction of earthquake source. Background Art

[0002] All existing plans to restore the seismometer have design flaws and differ from historical records, making them unable to truly eliminate academic disputes. Summary of the Invention Summary of the Invention

[0003] In order to restore a seismometer that is consistent with historical records and the technological level of the Han Dynasty, the present invention provides a mechanical device with better sensitivity that can roughly detect the direction of the earthquake source.

[0004] The purpose of the present invention is achieved by the following scheme.

[0005] The seismometer has eight pillars, which are connected by horizontal beams at the top and bottom. There are inward-pointing beams on the top of the pillars, two of which are connected to the top with opposite beams.

[0006] There are eight radial grooves in the middle of the bottom, which are called "eight ways". The width of the eight ways is larger than the diameter of the lower part of the capital column.

[0007] Inside the eighth channel, a trigger mechanism is set to control the tail end of the dragon machine. There is a hole on the trigger mechanism to insert the safety pin.

[0008] The dragon machine is a lever decorated with a dragon head. Its fulcrum is located at the lower part of the column. When only gravity acts on it, the dragon head droops. The dragon mouth is cup-shaped and can hold projectiles.

[0009] There is a toad under the dragon's head.

[0010] A multi-stage lever, also known as a "tooth lever," is mounted on the column above the dragon machine. The number of levers and the ratio of the power arm to the resistance arm are determined by the sensitivity of the instrument and the specific weight of the column. The pull rope of the multi-stage lever is slidable at the joint with the lever below.

[0011] In the middle of the top of the instrument, on the short horizontal beam between the two inclined beams, there is a vertical hole with a piston installed inside. The piston is pulled up by a double high pulley, and a column is suspended under the piston.

[0012] The "Duzhu" is a special type of pendulum, a high-center-of-gravity connecting rod pendulum. It consists of a central hook, a large cylinder below the hook, a coaxial annular cylinder above the large cylinder, and a coaxial thin cylinder below the large cylinder. The distance between the center of gravity of the Duzhu and the suspension point is one of the determining factors for the instrument's sensitivity.

[0013] A horizontal shelf is installed under the large cylinder of the main column. There is a hole in the middle of the shelf, and the thin cylindrical part of the main column passes through the hole in the middle of the shelf.

[0014] A fixed pulley is set on each inclined beam, and a pulley is set on the inclined beam below the fixed pulley. This pulley can slide along the inclined beam. One end of the rope is used to hold the pulley shaft, and the other end of the rope passes through the fixed pulley of the inclined beam to pull the top lever of the multi-stage lever downward.

[0015] Pulleys are set at both ends of the beam at the top of the column, close to the column.

[0016] A movable pulley is mounted on the top of the piston. A pair of fixed pulleys are mounted above the piston, on the short horizontal beams between the two diagonal beams. A rope runs from the two high pulleys, pulling the piston. The rope is then directed to the pulleys in the middle of the opposite horizontal beams below it, passing through the pulleys on the adjacent column edges, through the pulley on the diagonal beam, then through the pulley on the other side of the column, and then around the pulleys on the other diagonal beams before being secured.

[0017] In this way, eight sets of combined mechanisms composed of multi-stage levers, levers decorated with dragon heads to make dragon machines, and trigger mechanisms, together pull the piston through a pulley set, and suspend the column through the piston.

[0018] The safety mechanism is a hook installed under the crane. There is a ring on the crane for the hook to hang on. When the safety falls, it can pull the crane. The safety is pulled by a rope, passing through pulleys on the pillars and beams, and finally tied to the top of the piston. Beneficial effects

[0019] The present invention provides a seismograph that can roughly detect the direction of an earthquake source by using a mechanical device that meets the technological level of the Han Dynasty.

[0020] Eight sets of combined mechanisms consisting of multi-stage levers, dragon machines made of levers decorated with dragon heads, and eight trigger mechanisms, together pull the piston through a pulley set, and suspend the high-center-of-gravity connecting rod pendulum made of a column. The lower half of the column passes through the hole in the shelf, and the upper end of the piston also uses a pulley to control the safety mechanism of the dragon machine.

[0021] Place the seismometer on a horizontal base. Use each trigger mechanism to engage the corresponding tail end of the auger, and through a multi-stage lever and pulley system, pull up the piston and column. This operation requires setting up a set of combined mechanisms. First, use the safety device on the eighth path to control the trigger mechanism. Once fully set up, wait until the column is still, remove the safety device, and the seismometer can be used for earthquake detection.

[0022] During an earthquake, the seismometer's main body moves with the ground. Due to inertia, the column moves relative to the instrument toward the earthquake's source. Because the column's center of gravity is high, the distance its lower end moves is much greater than the distance its center of gravity moves, allowing it to detect even weak earthquakes.

[0023] As the pillar swayed, its lower end struck a trigger mechanism within the eight paths, causing the dragon mechanism and multi-stage levers to lose their restraints and rotate upward. Eventually, the rope pulling the piston slipped over the pulley and loosened, allowing the pillar to fall onto the shelf, no longer contacting other mechanisms. Simultaneously, the piston released a safety mechanism via the pulley, preventing other mechanisms from falsely triggering an alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic longitudinal section of the seismometer and a general diagram of the instrument's structural layout.

[0025] In the picture, 1. Pillar, 2. Shelf, 3. Piston, 4. Trigger mechanism, 5. Dragon mechanism, 6. Multi-stage lever, 7. Pulley, 8. Rope, 9. Horizontal beam, 10. Inclined beam, 11. Pillar, 12. Toad, 13. Eight paths.

[0026] Figure 2 This diagram shows a mechanism combining a double column, a piston, and a direction. It illustrates how the rope, after being drawn from the double-height pulley, winds around the top of the first column.

[0027] Figure 2 In the diagram, 1. Column, 2. Shelf, 3. Piston, 4. Trigger, 5. Dragon mechanism, 6. Multi-stage lever, 7. Pulley, 8. Rope, 9. Beam. Figure 3 This is a diagram of a combined mechanism in one direction. This diagram shows that the rope passes around the top of the previous pillar and then leads to the top of the current pillar to pass around.

[0028] Figure 3 In the diagram, 1. Column, 2. Shelf, 3. Piston, 4. Trigger, 5. Dragon mechanism, 6. Multi-stage lever, 7. Pulley, 8. Rope, 9. Beam. Figure 4 This is a schematic diagram of the insurance mechanism.

[0029] In the picture, 1. Piston, 2. Dragon machine, 3. Ring, 4. Hook, 5. Pulley. DETAILED DESCRIPTION

[0030] Figure 1In the structure, the column (1) passes through the shelf (2) and is suspended at the lower end of the piston (3). The piston (3) is installed on the beam (9). The piston (3) is pulled up by the rope (8) passing through the double-high pulley (7). The rope (8) on one side is wound around the pulley (7) in the middle of a beam (9) of the frame, and then passes through the pulleys (7) on both sides of the top of the four columns (11) and the pulley (7) on the inclined beam (10). The four combined mechanisms on the other side are operated in the same way. In this way, eight groups of combined mechanisms composed of multi-stage levers (6), dragon machines (5), and trigger mechanisms (4) in eight paths (13) together pull the piston through the pulley group.

[0031] During an earthquake, the lower end of the shaking capital column (1) touches the trigger mechanism (4) in the eight paths (13), causing the dragon machine (5) to lose its restraint. The dragon machine (5) rotates, and the projectile in the dragon's mouth falls into the mouth of the toad (12). The multi-stage lever (6) loses its lower pulling force and rotates upward. The rope (8) pulling the piston (3) slides over the pulley (7) and becomes loose. Finally, due to the action of gravity, the capital column (1) falls on the shelf (2) and no longer touches other mechanisms.

[0032] Note: The drawing is only a schematic diagram. The number of multi-stage levers (6), the ratio of the power arm to the resistance arm, etc., will depend on the specific situation.

[0033] Figure 2 It is a diagram showing that the column (1) passes through the shelf (2) and is suspended on the lower end of the piston (3) installed on the beam (9). The piston (3) is pulled up by the rope (8) passing through the double-high pulley (7). The rope (8) on one side is wound around the pulley (7) in the middle of the frame beam (9), and then passes through the pulley (7) at the end of the beam (9) to the pulley (7) on the inclined beam (10). Through the pulley (7) on the inclined beam (10), the rope between the combined mechanism consisting of the multi-stage lever (6), the dragon machine (5), and the trigger mechanism (4) in the eight paths (13) and the pulley (7) is tightened.

[0034] When the other combined organs are triggered, the rope (8) will slide through the pulley (7) on the end of the crossbeam (9) and the inclined beam (10), causing the piston (3) and the column (1) to fall, and this group of combined organs will not give a false alarm.

[0035] Figure 3 It is a schematic diagram that a rope (8) is pulled from one end of a horizontal beam (9) to the other end, and then passes through the pulley (7) at the end of the horizontal beam (9) and the pulley (7) on the inclined beam (10), and through the pulley (7) on the inclined beam (10), tightens the rope between the combined mechanism consisting of the multi-stage lever (6), the dragon machine (5), and the trigger mechanism (4) in the eight paths (13).

[0036] Figure 4In the embodiment, when the piston (1) is in a suspended state, the hook (4) serving as the safety mechanism is pulled up through several pulleys (5). If other combined mechanisms cause the piston (1) to fall, the hook (4) will fall and hook the ring (3) on the dragon machine (2). If the piston (1) falls due to the mechanism in the same combination, since the dragon machine (2) and the hook (4) move at the same time, the ring (3) on the dragon machine (2) will stagger the hook (4) and will not affect the alarm of the dragon machine (2).

Claims

1. A seismograph capable of roughly detecting the direction of an earthquake source, comprising a column made of a high-center-of-gravity connecting rod pendulum, a shelf, a piston, a pulley system, a multi-stage lever, a dragon mechanism made of a lever decorated with a dragon head, eight paths, a trigger mechanism, a toad, and a safety mechanism. Its characteristics are: Eight sets of combined mechanisms composed of multi-stage levers, dragon machines, and eight trigger mechanisms jointly pull the piston through a pulley set, and suspend the column through the piston. The lower half of the column passes through the hole in the shelf, and the upper end of the piston also uses a pulley to pull the safety mechanism that can control the dragon machine.

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