Assembly type earthquake displacement recording device

Abstract

The utility model discloses an assembled earthquake displacement recording device which can record horizontal and vertical displacements of a building in an earthquake at the same time. The device is mainly composed of a horizontal scale plate substrate, a vertical scale plate substrate, a scale plate and an ejector pin assembly. The horizontal scale plate base plate and the vertical scale plate base plate are fixed to a building through anchor bolt assemblies, and the levelness and perpendicularity of the horizontal scale plate base plate and the vertical scale plate base plate are ensured through adjusting gaskets. Scale marks are marked on the surface of the scale plate and used for recording displacement traces. The ejector pin assembly comprises an ejector pin, a spring, a pressure adjusting gasket and the like and is fixed to a building through an anchor bolt assembly, and the height can be adjusted to ensure that the ejector pin makes contact with the scale plate. And the front end of the ejector pin is made of a metal material with higher hardness, so that displacement marks can be left on the wear-resistant scale plate. The device has the advantages of being high in universality, easy to mount and dismount, reliable in structure, convenient to maintain, good in economical efficiency and the like, and is suitable for earthquake displacement monitoring of new and old buildings.

Description

Technical Field

[0001] This utility model patent relates to the technical field of seismic isolation equipment, specifically an assembleable earthquake displacement recording device. Background Art

[0002] When an earthquake strikes, the foundation and the building itself inevitably experience horizontal and vertical displacements due to complex geological stresses. This displacement is crucial for studying a building's earthquake performance, assessing its seismic resistance, and optimizing its structure. To accurately observe and accurately record building displacements, some projects install earthquake displacement recording devices on the building during construction.

[0003] However, existing earthquake displacement recording devices present numerous installation inconveniences and limitations. The installation process requires the installation of embedded components simultaneously with the pouring of concrete, a process that requires precise positioning and rigorous process control. The earthquake displacement recording device can only be installed on the embedded components after the concrete has solidified and reached the required strength. Furthermore, the height of the installed earthquake displacement recording device is fixed and cannot be flexibly adjusted to meet actual needs or subsequent changes. This results in the necessity to replace damaged components or remove the recording device for unspecified reasons, requiring destructive removal. This destructive removal not only damages the building's structural integrity but also renders the recording device obsolete, increasing equipment costs and making repairs more difficult. Furthermore, for buildings already under construction, retrofitting earthquake displacement recording devices is impossible due to the lack of pre-installed embedded components and suitable installation conditions. This significantly limits the acquisition and analysis of earthquake displacement monitoring data from existing buildings.

[0004] On the other hand, existing earthquake displacement recording devices suffer from significant drawbacks in practical applications. Their structural design makes it difficult to easily adjust the distance between the needle tip and the dial. Excessive contact force between the needle tip and the dial triggers a series of chain reactions. The excessive contact force significantly increases friction and resistance, significantly impacting the smoothness of the device's displacement recording process and significantly increasing the difficulty of recording displacement. In this case, the device struggles to accurately capture minute changes in building displacement, resulting in significant deviations between the recorded data and the actual displacement. This significantly reduces recording accuracy and makes it impossible to provide reliable and accurate data support for earthquake research and building structural analysis. Conversely, if the contact force between the needle tip and the dial is too low, another problem arises. Due to the insufficient contact force, the needle tip struggles to leave a clear, visible mark on the dial when the building shifts. In this way, the displacement information may be missing or unclear, which will also seriously affect the accurate recording and subsequent analysis of earthquake displacement data, making the entire earthquake displacement recording device unable to effectively play its due role at critical moments, greatly limiting its application value and actual effectiveness in fields such as earthquake monitoring and building safety assessment. Utility Model Content

[0005] To solve the above-mentioned installation and removal difficulties and the inability to install additional equipment, the inventors have developed and designed a prefabricated earthquake displacement recording device. This device completely avoids the prerequisite requirement of installing embedded parts at the same time as pouring concrete before installation. The relevant components can be fixed in a simple way, and all components can be assembled on site. The operation is simple and adjustable, and it can also be installed on completed buildings. Whether in the horizontal or vertical direction, it can record the trajectory of the seismic isolation building's movement over time during the earthquake cycle. Specifically, the utility model is implemented as follows:

[0006] A preassembled seismic displacement recording device, wherein the four corners of a horizontal scale plate base plate are fixed to a building by means of horizontal anchor bolt assemblies for adjusting the level and being fixedly connected to the building; the edge of the horizontal scale plate is flatly mounted on the horizontal scale plate base plate by means of screws, and scale lines are formed on the front surface for a horizontal ejector assembly to leave displacement marks on the surface when it is displaced; the horizontal ejector assembly is perpendicular to the top of the horizontal scale plate, with the ejector downwardly pointing toward the center of the horizontal scale plate, and is fixed to the building by means of an ejector anchor bolt assembly and a horizontal ejector adjustment gasket, and the height can be adjusted according to the on-site conditions so that the needle tip contacts the horizontal scale plate; and is used to cause the ejector to generate contact displacement relative to the surface of the horizontal scale plate when displacement occurs.

[0007] Furthermore, a horizontal adjustment washer is mounted between the bolt of the horizontal anchor assembly and the base plate surface. The horizontal adjustment washer can be used to adjust the verticality between the horizontal scale plate base plate and the horizontal ejector assembly, as well as the horizontality between the horizontal surfaces. The horizontal adjustment washer is positioned between the base plate surface and the building structure surface.

[0008] Furthermore, the horizontal ejector assembly includes: the front end of the ejector is processed into a needle tip, the rear end is provided with a thread, a connecting gasket and a nut, and the whole is installed in the ejector sleeve and extends out from the front end hole of the ejector sleeve; the rear end of the ejector sleeve is provided with a thread for screwing into and cooperating with the thread at the front end of the ejector body, the ejector body, the rear end is installed in the mounting sleeve through the provided thread and is fastened by a locking nut; the mounting sleeve is installed on the mounting base plate, and the mounting base plate is provided with a mounting hole for inserting the anchor bolt of the ejector anchor bolt assembly, for fixing the mounting sleeve; a spring is placed in the ejector sleeve, and the front end is pressed on the ejector gasket; a pressure regulating gasket is provided between the ejector body and the ejector sleeve. After assembly, the front end of the ejector body is pressed on the rear end of the spring, thereby providing ejector pressure and contacting the horizontal scale plate.

[0009] Furthermore, the ejector pin is made of metal material, the grid lines marked with scale on the horizontal scale plate are made of wear-resistant organic material, and the hardness of the metal material of the ejector pin exceeds the hardness of the plate surface of the horizontal scale plate, so that a track can be drawn on the horizontal scale plate during an earthquake.

[0010] Furthermore, the ejector body can compress the spring after the front end thread is screwed into the ejector sleeve, and the front end of the spring presses on the ejector gasket, thereby transmitting the pressure generated by the spring compression to the ejector, providing the initial pressure for the ejector to contact the scale plate;

[0011] A pressure regulating gasket is additionally provided between the ejector body and the ejector sleeve to reduce the compression of the spring, thereby reducing the magnitude of the initial pressure.

[0012] Furthermore, the ejector assembly can be adjusted in height. The rear end of the ejector body is fully threaded and can be screwed into the mounting sleeve. The relative height of the ejector assembly can be adjusted by the screwing depth.

[0013] Furthermore, a locking nut is provided at the front end of the mounting sleeve. After the screwing depth is determined, the locking nut and the mounting sleeve are tightened to lock the ejector body and limit its axial movement.

[0014] Furthermore, the device also includes an upper structure installed on a building, the upper structure including a top surface and at least one side surface, the top surface is used to install a horizontal scale plate substrate, a horizontal scale plate and a horizontal ejector pin assembly; the side surface is used to install a vertical scale plate substrate, a vertical scale plate and a vertical ejector pin assembly; and is used to record the vertical displacement generated during an earthquake.

[0015] Furthermore, the vertical scale plate base plate is fixed to the building at its four corners by vertical anchor bolt assemblies for adjusting verticality and is connected and fixed to the side of the upper structure on the building;

[0016] The vertical scale plate is mounted on the vertical scale plate base plate by screws on its edge, and scale lines are formed on its surface for the vertical ejector assembly to leave displacement marks on the surface when it moves;

[0017] The vertical ejector pin assembly is perpendicular to the vertical scale plate, with the ejector pin horizontally facing the center of the vertical scale plate. It is fixed to the building through the vertical ejector pin anchor assembly and the vertical ejector pin adjustment gasket. The distance relative to the ejector pin can be adjusted so that the needle tip contacts the vertical scale plate. It is used to generate contact displacement of the ejector pin relative to the surface of the vertical scale plate when displacement occurs.

[0018] Furthermore, a vertical adjustment gasket is installed between the bolt of the vertical anchor assembly and the substrate surface, which can adjust the verticality and horizontality between the vertical scale plate substrate and the vertical ejector assembly through the vertical adjustment gasket; the structural structure of the vertical ejector assembly is the same as that of the horizontal ejector assembly.

[0019] The working principle of this utility model is described as follows: This device records displacement information in two dimensions, including horizontal and vertical components. The horizontal component consists of a horizontal scale plate baseplate secured to the building via a horizontal anchor assembly, ensuring the stability of the device. The horizontal scale plate is screwed onto the baseplate and features scale lines on its surface, used to record horizontal displacement. The horizontal ejector assembly is secured to the building via an ejector anchor assembly and can be adjusted in height to ensure proper contact between the needle tip and the horizontal scale plate. The vertical component consists of a vertical scale plate baseplate secured to the side of the building's superstructure via a vertical anchor assembly and similarly features adjustment to ensure proper alignment with the vertical ejector assembly. The vertical scale plate is mounted on the baseplate and also features scale lines on its surface. The vertical ejector assembly is mounted vertically, pointing toward the vertical scale plate, and records vertical displacement. Both the horizontal and vertical ejector assemblies consist of ejectors, springs, and pressure-adjusting washers, which work together to ensure the ejector pins contact the scale plates with appropriate force. When an earthquake occurs, the displacement of the building causes the ejector pin to move relative to the scale plate, leaving a displacement trace on the scale plate. The tip of the ejector pin is designed as a needle tip, made of a material harder than the scale plate surface, ensuring accurate tracking of the displacement trace on the scale plate. The scale lines on the scale plate are made of wear-resistant material to maintain long-term clarity. Both the horizontal and vertical scale plate bases can be fine-tuned for levelness and verticality using corresponding adjustment shims to ensure accurate contact between the ejector pin and the scale plate, improving measurement accuracy. The height of the ejector pin assembly and the pressure of the ejector pin can be adjusted by adjusting the shims, the insertion depth of the ejector pin body, and the lock nut to ensure stable recording of displacement data. During an earthquake, the building vibrates and moves. This causes horizontal displacement, and the horizontal ejector pin assembly moves with the building. The ejector pin tip contacts the horizontal scale plate surface, leaving a trace, and the horizontal displacement is recorded by the scale lines on the horizontal scale plate. During an earthquake, the vertical displacement of a building drives the movement of the vertical ejector assembly. The ejector pins produce contact displacement on the surface of the vertical scale plate, leaving a mark. The vertical displacement is recorded by the scale lines on the vertical scale plate. During an earthquake, the seismic forces acting on a building are a complex three-dimensional force system. Horizontal seismic forces cause the building to sway left and right or forward and backward, while vertical seismic forces may cause the building to bounce up and down. Simultaneously recording horizontal and vertical displacements fully reflects the spatial motion of a building under the influence of an earthquake. Recording horizontal displacements reveals the amplitude and frequency of a building's lateral oscillations (such as east-west or north-south), which is crucial for assessing its lateral stability and shear resistance. Recording vertical displacements, on the other hand, reveals any vertical settlement or rise of a building, which is crucial for analyzing the seismic performance of a building's vertical load-bearing structures (such as columns and foundations).

[0020] Beneficial technical effects of the utility model:

[0021] (1) Greater versatility: Compared with existing earthquake displacement recording devices, this device can be adjusted in height according to the actual on-site space and can be installed in most seismic isolation buildings.

[0022] (2) Simple installation and disassembly, and greater applicability: Compared with existing earthquake displacement recording devices, this device does not require embedded parts and can be fixed only with chemical anchor bolts. It can be installed in both horizontal and vertical directions regardless of whether the building is under construction or the building has been completed. When disassembling, it is only necessary to loosen the nut of the chemical anchor bolt without damaging the building.

[0023] (3) Simple and reliable structure: The device mainly adopts threaded connection, and the processing technology is simple, firm and reliable.

[0024] (4) Easy maintenance: The device uses conventional materials and components on the market, is easy to manufacture, and each component can be disassembled and assembled separately and easily replaced.

[0025] (5) More economical: Compared with existing earthquake displacement recording devices, this device has a simple manufacturing process and can be mass-produced, which reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of the structure of an assemblable earthquake displacement recording device of the present invention;

[0027] Figure 2 This is a schematic exploded view of the structure of an assemblable earthquake displacement recording device of the present invention;

[0028] Figure 3 This is an exploded perspective schematic diagram of the structure of the ejector pin assembly of the present utility model;

[0029] Figure 4 This is a schematic diagram of the internal structure of the ejector assembly of the present invention;

[0030] in:

[0031] 1 horizontal scale plate substrate,

[0032] 2 horizontal anchor bolt assembly,

[0033] 3 horizontal scale plates,

[0034] 4 ejector anchor assembly,

[0035] 5 horizontal ejector assembly, 5-1—ejector, 5-2—spring, 5-3—ejector sleeve, 5-4—pressure regulating gasket, 5-5—ejector body, 5-6—locking nut, 5-7—mounting sleeve, 5-8—mounting base plate;

[0036] 6 horizontal ejector adjustment gasket,

[0037] 7. Level adjustment gasket,

[0038] 8Superstructure,

[0039] 11 vertical scale plate substrate,

[0040] 12 vertical scale plates,

[0041] 13 vertical thimble anchor assembly,

[0042] 14 vertical ejector adjustment gasket,

[0043] 15 vertical ejector assembly,

[0044] 16 vertical adjustment gasket;

[0045] 17 vertical anchor bolt assembly. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0047] Example 1: An assemblable earthquake displacement recording device, comprising the following structure:

[0048] The horizontal scale plate 3 is mounted on the horizontal scale plate base plate 1 by screws, and the horizontal scale plate base plate 1 is fixed to the building by the horizontal anchor bolt assembly 2 and the horizontal adjustment gasket 7.

[0049] The horizontal ejector pin assembly 5 is fixed to the building perpendicular to the horizontal scale plate 3 through the horizontal anchor bolt assembly 2 and the horizontal adjustment gasket 7, and the needle tip contacts the horizontal scale plate 3.

[0050] The horizontal scale plate 3 is marked with grid lines and is made of wear-resistant organic material, which can record the trajectory of the needle tip during an earthquake.

[0051] The horizontal scale plate base plate 1 and horizontal ejector pin assembly 5 can be installed on a building in both horizontal and vertical directions. Based on actual needs, holes can be drilled in the building, and the horizontal anchor bolt assembly 2 can be inserted into the holes to secure it to the building. The corresponding holes on the horizontal scale plate base plate 1 and horizontal ejector pin assembly 5 can be passed through the horizontal anchor bolt assembly 2. The horizontal scale plate base plate 1 and horizontal ejector pin assembly 5 can be adjusted for horizontality or verticality using horizontal adjustment gaskets 7 before being secured to the horizontal anchor bolt assembly 2, thereby securing the base plate 1 and horizontal ejector pin assembly 5 to the building. The horizontal scale plate base plate 1 must be installed on the building's foundation support, and the horizontal ejector pin assembly 5 must be installed on the building's superstructure 8. If disassembly is required later, simply loosen the horizontal anchor bolt assembly 2.

[0052] The horizontal ejector assembly 5 comprises a pin 5-1 made of a hard metal material with a sharp tip at the front and a threaded rear end connected to a gasket and nut. The pin 5-1 fits entirely within the ejector sleeve 5-3 and extends through the front hole of the sleeve 5-3. A spring 5-2 is placed within the sleeve 5-3, with its front end pressing against the ejector gasket. The rear end of the ejector sleeve 5-3 is threaded, threaded into the front end of the ejector body 5-5, and its front end presses against the rear end of the spring 5-2. Once assembled, the spring 5-2 is compressed. The pressure generated by the compression of the spring 5-2 is transferred to the ejector 5-1 due to the front end pressing against the ejector gasket, providing initial pressure. A pressure-regulating gasket 5-4 is added between the ejector body 5-5 and the sleeve 5-3 to reduce the compression of the spring 5-2 and thus the initial pressure. The type of pressure-regulating gasket 5-4 can be selected based on actual needs. In actual use, if the ejector pin 5 - 1 undergoes axial displacement, the spring 5 - 2 can act as a buffer, allowing the ejector pin 5 - 1 to slide axially in the ejector pin sleeve 5 - 3 and always provide an axial pressure to press the ejector pin 5 - 1 against the horizontal scale plate 3.

[0053] The rear end of ejector body 5-5 is fully threaded and can be screwed into mounting sleeve 5-7. The screw-in depth can be adjusted on-site based on the actual spatial position, thereby adjusting the height of horizontal ejector assembly 5. A locking nut 5-6 is provided at the front end of mounting sleeve 5-7. Once the screw-in depth is determined, tightening locking nut 5-6 against mounting sleeve 5-7 locks ejector body 5-5, preventing axial movement. Once the entire assembly is installed, the needle tip remains firmly pressed against horizontal scale plate 3.

[0054] The mounting sleeve 5 - 7 is connected to the mounting base plate 5 - 8 , and the mounting base plate 5 - 8 is provided with mounting holes for fixing the horizontal anchor bolt assembly 2 .

[0055] After installing a set of assembleable earthquake displacement recording devices in the horizontal and vertical directions of the building, when an earthquake occurs, due to the displacement between the building foundation support and the superstructure 8, the needle tip draws a corresponding line on the horizontal scale plate 3. This structure can ensure that the needle tip always maintains appropriate force and acts on the scale plate surface, so that the trajectory of movement over time in the horizontal and vertical directions during the earthquake cycle can be recorded.

[0056] Example 2: Assembly process

[0057] Horizontal installation

[0058] Installation of horizontal scale plate substrate 1:

[0059] Determine the mounting location of the horizontal scale plate base plate 1 on the building based on design requirements, typically selecting a suitable horizontal surface, such as a floor or the surface of a specific horizontal structural beam. Insert the bolts of the horizontal anchor assembly 2 through the mounting holes of the horizontal scale plate base plate 1, and insert the horizontal adjustment spacers 7 between the bolts and the base plate surface. Then, insert the bolts into the pre-drilled anchor holes in the building and tighten them initially with nuts, but do not fully tighten them to allow for subsequent horizontal and vertical adjustments.

[0060] Horizontal scale plate 3 installation:

[0061] The edge of the horizontal scale plate 3 is installed flat on the horizontal scale plate base plate 1 by screws to ensure that the installation is firm and the surface of the scale plate is flat; during installation, it can be used in conjunction with a spirit level. After placing the spirit level, adjust the downward depth of the bolts of the horizontal anchor assembly 2 so that after the four corners are matched, the horizontal scale plate 3 can achieve the effect of maintaining levelness. Since the horizontal adjustment gasket 7 can be compressed, the adjustable depth range is actually relatively wide. The loose end is shallower, but it can ensure that the installation is tight. The tight end is deeper, and the horizontal adjustment gasket 7 is compressed tighter. In addition, the horizontal adjustment gasket 7 can stabilize the horizontal scale plate 3. Through the horizontal anchor assembly 2, it is possible to quickly find a suitable area position on the building for direct assembly and use.

[0062] Installation of horizontal ejector assembly 5:

[0063] Assemble the horizontal ejector assembly 5: the front end of the ejector is a needle tip, and the rear end is connected to the gasket and nut and then installed in the ejector sleeve as a whole, and the ejector extends from the front end hole of the ejector sleeve; the rear end of the ejector sleeve is screwed into the thread of the front end of the ejector body for matching installation; the rear end of the ejector body is installed in the mounting sleeve through a thread, and a pressure regulating gasket is placed between the ejector body and the ejector sleeve, and the spring is placed in the ejector sleeve so that its front end is pressed on the ejector gasket. At this time, the front end of the ejector body is pressed on the rear end of the spring, providing ejector pressure to contact the horizontal scale plate 3. Finally, the mounting sleeve is installed on the mounting base plate, and the mounting hole of the mounting base plate is used for inserting the anchor bolt of the ejector anchor bolt assembly 4.

[0064] Fix the assembled horizontal thimble assembly 5 to the building through the thimble anchor assembly 4 and the horizontal thimble adjustment gasket 6. Adjust the height by adjusting the depth position of the rear end of the thimble body into the mounting sleeve according to the on-site conditions so that the thimble tip contacts the horizontal scale plate 3. Then tighten the locking nut at the front end of the mounting sleeve to the mounting sleeve to lock the thimble body and limit its axial movement.

[0065] During the installation process, the horizontal adjustment gasket 7 can be used to fine-tune the verticality between the horizontal scale plate substrate 1 and the horizontal ejector pin assembly 5, as well as the horizontality between the horizontal planes. By observing the relative position and angular relationship between the ejector pin and the scale plate, it can be ensured that the ejector pin can vertically and stably contact the scale plate to ensure measurement accuracy.

[0066] Vertical installation

[0067] Vertical scale plate substrate 11 installation:

[0068] Determine the installation position of the vertical scale plate substrate 11 on the side of the building superstructure 8. This position should accurately reflect the vertical displacement of the building and be easy to install and observe.

[0069] Pass the bolts of the vertical anchor assembly 17 through the mounting holes of the vertical scale plate base plate 11, insert the vertical adjustment gasket 16 between the bolts and the base plate surface, and then implant the bolts into the pre-drilled anchor holes on the side of the building superstructure 8, and also tighten the nuts preliminarily.

[0070] Installation of vertical scale plate 12:

[0071] Align the edge of the vertical scale plate 12 with the vertical scale plate base plate 11, and install the vertical scale plate 12 on the vertical scale plate base plate 11 with screws to ensure that the scale plate surface is flat and the scale is clearly visible.

[0072] Installation of vertical ejector assembly 15:

[0073] Since the structure of the vertical ejector assembly 15 is the same as that of the horizontal ejector assembly 5 , it is assembled according to the assembly method of the horizontal ejector assembly 5 .

[0074] The assembled vertical ejector assembly 15 is fixed to the building using the vertical ejector anchor assembly 13 and the vertical ejector adjustment washer 14. The distance between the ejector and the vertical scale plate 12 is adjusted so that the needle tip contacts the vertical scale plate 12. The vertical adjustment washer 16 is used to adjust the verticality and horizontality between the vertical scale plate base plate 11 and the vertical ejector assembly 15 to ensure accurate contact between the ejector and the vertical scale plate 12.

[0075] In this embodiment, the wall on which the horizontal ejector assembly 5 and the vertical ejector assembly 15 are fixedly installed can be temporarily cast and constructed using floor slabs or building frames.

Claims

1. An assemblable earthquake displacement recording device, characterized in that include: A horizontal scale plate base plate (1) is fixed to the building at its four corners via horizontal anchor bolt assemblies (2) for adjusting the level and being fixedly connected to the building; A horizontal scale plate (3) is flatly mounted on the horizontal scale plate base plate (1) by screws on its edge, and a scale line is formed on the front surface for the horizontal ejector assembly (5) to leave a displacement mark on the surface when it is displaced; The horizontal ejector pin assembly (5) is perpendicular to the top of the horizontal scale plate (3) and is downwardly directed toward the center of the horizontal scale plate (3). It is fixed to the building through the ejector pin anchor assembly (4) and the horizontal ejector pin adjustment gasket (6). The height can be adjusted according to the on-site conditions so that the needle tip contacts the horizontal scale plate (3); it is used to generate contact displacement of the ejector pin relative to the surface of the horizontal scale plate (3) when displacement occurs.

2. The assemblable earthquake displacement recording device according to claim 1, characterized in that: A horizontal adjustment gasket (7) is also provided between the bolt of the horizontal anchor bolt assembly (2) and the substrate surface, and the verticality between the horizontal scale plate substrate (1) and the horizontal ejector pin assembly (5) and the horizontality between the horizontal surfaces can be adjusted by the horizontal adjustment gasket (7).

3. The assemblable earthquake displacement recording device according to claim 1, characterized in that: The horizontal ejector pin assembly (5) comprises: The thimble (5-1) has a front end processed into a needle tip and a rear end provided with a thread, a connecting gasket and a nut, and is integrally installed in the thimble sleeve (5-3) and extends from the front end hole of the thimble sleeve (5-3); The thimble sleeve (5-3) has a thread at the rear end for screwing into and fitting with the thread at the front end of the thimble body (5-5). The rear end of the ejector body (5-5) is mounted in the mounting sleeve (5-7) via a provided thread and is fastened via a locking nut (5-6); The mounting sleeve (5-7) is mounted on the mounting base plate (5-8), and the mounting base plate (5-8) is provided with a mounting hole for inserting an anchor bolt of the ejector anchor bolt assembly (4) for fixing the mounting sleeve (5-7); The spring (5-2) is placed in the ejector sleeve (5-3) with its front end pressed against the ejector gasket; A pressure regulating gasket (5-4) is provided between the ejector body (5-5) and the ejector sleeve (5-3). After assembly, the front end of the ejector body (5-5) presses on the rear end of the spring (5-2), thereby providing pressure to the ejector (5-1) and contacting the horizontal scale plate (3).

4. The assemblable earthquake displacement recording device according to claim 1, characterized in that: The ejector pin (5-1) is made of metal material, and the grid lines marked with scale on the horizontal scale plate (3) are made of wear-resistant organic material. The hardness of the metal material of the ejector pin (5-1) exceeds the hardness of the plate surface of the horizontal scale plate (3), and a track can be drawn on the horizontal scale plate (3) during an earthquake.

5. The assemblable earthquake displacement recording device according to claim 3, characterized in that: The ejector body (5-5) can compress the spring (5-2) after the front end thread is screwed into the ejector sleeve (5-3), and the front end of the spring (5-2) is pressed on the ejector gasket, thereby transmitting the pressure generated by the compression of the spring (5-2) to the ejector (5-1), providing the initial pressure for the ejector (5-1) to contact the horizontal scale plate (3); A pressure regulating gasket (5-4) is additionally provided between the ejector main body (5-5) and the ejector sleeve (5-3) for reducing the compression amount of the spring (5-2) to reduce the magnitude of the initial pressure.

6. The assemblable earthquake displacement recording device according to claim 5, characterized in that: The horizontal ejector assembly (5) can be adjusted in height. The rear end of the ejector body (5-5) is fully threaded and can be screwed into the mounting sleeve (5-7). The relative height of the horizontal ejector assembly (5) can be adjusted by the screwing depth.

7. The assemblable earthquake displacement recording device according to claim 6, characterized in that: A locking nut (5-6) is provided at the front end of the mounting sleeve (5-7). After the screwing-in depth is determined, the locking nut (5-6) and the mounting sleeve (5-7) are tightened to lock the ejector body (5-5), thereby limiting its axial movement.

8. The assemblable earthquake displacement recording device according to any one of claims 1 to 7, characterized in that: Also included is an upper structure (8) mounted on a building, the upper structure (8) comprising a top surface and at least one side surface, the top surface being used to mount a horizontal scale plate substrate (1), a horizontal scale plate (3) and a horizontal ejector pin assembly (5); The side surface is used for mounting a vertical scale plate substrate (11), a vertical scale plate (12), and a vertical ejector pin assembly (15); and is used for recording vertical displacement generated during an earthquake.

9. The assemblable earthquake displacement recording device according to claim 8, characterized in that: The vertical scale plate base plate (11) is fixed to the building at its four corners via vertical anchor bolt assemblies (17) for adjusting verticality and is connected and fixed to the side of the upper structure (8) on the building; The vertical scale plate (12) is mounted on the vertical scale plate base plate (11) by screws on its edge, and has scale lines on its surface for the vertical ejector assembly (15) to leave displacement marks on the surface when it is displaced; The vertical ejector pin assembly (15) is perpendicular to the vertical scale plate (12), and the ejector pin is horizontally oriented toward the center of the vertical scale plate (12). The ejector pin is fixed to the building through a vertical ejector pin anchor assembly (13) and a vertical ejector pin adjustment gasket (14). The distance relative to the ejector pin can be adjusted so that the needle tip contacts the vertical scale plate (12); and the ejector pin is used to generate contact displacement relative to the surface of the vertical scale plate (12) when displacement occurs.

10. The assemblable earthquake displacement recording device according to claim 9, characterized in that: A vertical adjustment gasket (16) is also provided between the bolt of the vertical anchor bolt assembly (17) and the substrate surface, and the verticality and horizontality between the vertical scale plate substrate (11) and the vertical ejector pin assembly (15) can be adjusted by the vertical adjustment gasket (16); The structure of the vertical ejector pin assembly (15) is the same as that of the horizontal ejector pin assembly (5).

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