A prism mounting fixture for housing inspection

Abstract

The application discloses a prism-mounted fixing device for house detection and relates to the technical field of house detection. The device comprises an upper connecting piece connected with a house structure beam plate, a fixing rod with an openable and closable round hook at a lower end, and a lower combined mechanism composed of an arrow-shaped rod piece, a hollow round ball, a limiting block and a prism. The arrow-shaped rod piece is fixedly connected with the prism, the hollow round ball is slidably sleeved on the arrow-shaped rod piece and located between the top end of the arrow-shaped rod piece and the limiting block, and the top end of the arrow-shaped rod piece is in a reverse triangular arrow-shaped structure. When fixing, the arrow-shaped rod piece is pushed upward, the reverse triangular arrow-shaped structure is clamped into the round hook, the hollow round ball is slid into the interior of the fixing rod, and quick self-locking fixing is realized under the action of gravity; when disassembling, the hollow round ball is made to enter the inner cavity of the fixing rod by continuously pushing upward, and the round ball is made to be pulled downward to be separated from the round hook, so that quick separation is realized.

Description

Technical Field

[0001] This invention relates to the field of building inspection technology, and more specifically, to a fixing device for mounting a prism in building inspection. Background Technology

[0002] During the operation of a building structure, continuous and precise monitoring of the displacement and settlement of key load-bearing components such as floor slabs, roof slabs, and beams is essential to ensure the safety and reliability of the building structure. Currently, total stations in conjunction with prisms are commonly used for coordinate and elevation measurements in building inspections. By installing a prism as a measurement target on the component to be measured, the total station emits an infrared laser to the prism and receives the echo signal, thereby accurately measuring the three-dimensional coordinate changes of the measuring point and determining the displacement and settlement of that point. This method has advantages such as high accuracy, convenient operation, and reliable data, and has become one of the mainstream measurement technologies in the field of building structural safety monitoring.

[0003] In existing technologies, prisms are typically installed by directly attaching them to the surface of a floor slab or beam, and then using a total station to measure the coordinates of that point. However, the floor slab and beam tops are located within the building's usable space, where people frequently walk, equipment is placed, or goods are stacked. This traditional method of directly placing prisms not only occupies the space above the floor slab and beam tops, affecting the building's normal functionality, but also makes the prisms highly susceptible to displacement or even falling due to human contact, vibration, or disturbance from stacking loads. Furthermore, this installation method makes it difficult to ensure that the prism measurement point is in the same position each time during repeated testing, resulting in a lack of comparability between different batches of test data. This severely affects the accuracy, continuity, and analytical value of displacement and settlement data, making it difficult to meet the technical requirements for long-term safety monitoring of building structures. Summary of the Invention

[0004] The purpose of this invention is to provide a fixing device for prism installation in building inspection, which can monitor the displacement and settlement of beams and floor slabs. It is easy to disassemble while ensuring the fixed position of the measuring point, and does not occupy the space above the floor slabs and beams of the building structure.

[0005] The objective of this invention is achieved as follows: a fixing device for installing a prism for building inspection, comprising: a building structural beam, and further comprising: an upper connector, the upper end of which is fixedly connected to the building structural beam; a fixing rod, the lower end of which is provided with a round hook; and a lower assembly mechanism, comprising an arrow-shaped rod, a hollow sphere, a limiting block, and a prism, wherein the arrow-shaped rod is fixedly connected to the prism, the hollow sphere is slidably sleeved on the arrow-shaped rod, the arrow-shaped rod is provided with a limiting block, and a hollow sphere is provided between the limiting block and the top of the arrow-shaped rod.

[0006] Preferably, the fixing rod consists of two components, left and right, with the upper part being straight, and the two round hooks being openable and closable.

[0007] Preferably, the hollow sphere is a spherical object with a hollow center, and the hollow hole is located between the top of the arrow-shaped rod and the limiting block, allowing it to slide.

[0008] Preferably, the limiting block is located in the middle of the arrow-shaped rod and is connected by welding.

[0009] Preferably, the prism is used for coordinate and elevation measurements during building inspection, and is connected to an arrow-shaped rod and fixed by welding.

[0010] Preferably, the lower end of the upper connector is rotatably connected to the fixed rod.

[0011] Preferably, the upper end of the arrow-shaped rod is inverted triangular arrow shape, and the arrow-shaped rod is engaged with the round hook at the lower end of the fixing rod to fix the arrow-shaped rod.

[0012] Preferably, when the arrow-shaped rod is pushed upward into the interior of the fixed rod, the hollow sphere slides on the arrow-shaped rod and is inserted into the hook at the lower end of the fixed rod. Under the action of natural gravity, the inverted triangular arrow at the upper end of the arrow-shaped rod hangs on the hook, realizing the quick engagement and fixation of the lower assembly mechanism with the fixed rod.

[0013] Preferably, when it is necessary to disassemble the lower assembly mechanism, the arrow-shaped rod is pushed upward to allow the hollow sphere to enter the fixed rod, and then the arrow-shaped rod is pulled downward, so that the hollow sphere disengages from the lower hook of the fixed rod in sequence, thereby achieving rapid separation of the lower assembly mechanism from the fixed rod.

[0014] Preferably, the lower assembly mechanism can be completely detached from the fixing rod and removed as a whole.

[0015] The beneficial effects of this invention are as follows: 1. This device fixes the upper connector to the lower part of the component being measured, so that the prism is installed in the space below the floor slab and beam, without occupying the upper space of the floor slab and beam of the building structure. This avoids interference from personnel walking and cargo stacking on the prism installation position, and ensures the long-term stability and data continuity of the measuring point. 2. This device achieves quick fixing and disassembly through the snap-fit ​​between the arrow-shaped rod and the hook at the lower end of the fixed rod, as well as the sliding guide effect of the hollow ball on the arrow-shaped rod. Both fixing and disassembly involve upward pushing, only the pushing distance is different, making the operation simple and efficient. 3. The device uses the upper connector to fix the beams and slabs of the building structure, and the lower assembly mechanism to lock in place with the fixing rod, so that the prism is in the same spatial coordinate position after each installation. This ensures the consistency of the measuring point position during multiple tests, and improves the accuracy and comparative analysis value of displacement and settlement data. 4. This device is suitable for both short-term testing and long-term monitoring, making it highly adaptable. It also has simple components, low cost, and good prospects for engineering promotion and application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the arrow-shaped rod of the present invention being fixed under the action of gravity after entering the fixed rod.

[0018] Figure 2 This is a schematic diagram of the structure in the open state of the present invention.

[0019] Figure 3 This is a schematic diagram of the lower assembly mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the sliding of the hollow sphere in the lower assembly mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram of the hollow spherical structure in this invention.

[0022] Figure 6 This is a schematic diagram of the closed-state structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the arrow-shaped rod of the present invention being pushed upward into the internal structure of the fixed rod.

[0024] Figure 8 This is a schematic diagram of the upward pushing structure of the arrow-shaped rod into the fixed rod and pulling down structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the hollow sphere passing through the fixed rod structure during the downward pulling process of the arrow-shaped rod of the present invention.

[0026] Figure 10 This is a schematic diagram of the arrow-shaped rod pull-down structure of the present invention.

[0027] In the picture: 1. Upper connector; 11. Round hook; 2. Fixing rod; 3. Arrow-shaped rod; 4. Hollow sphere; 41. Hollow hole; 5. Limiting block; 6. Prism; 7. Building structural beams and slabs. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0029] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0030] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0031] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0032] like Figure 1 , Figure 2 As shown, the upper end of the upper connector 1 is fixedly connected to the structural beam 7 of the building. The upper connector 1 is fixed to the lower surface of the structural beam 7 of the building using expansion bolts or rebar, thereby suspending the entire device in the space below the floor slab or beam, so that the prism 6 is located below the component being measured, without occupying the upper space of the floor slab and beam top, effectively avoiding interference from personnel walking and goods stacking in the building's usable space on the prism installation position, and ensuring the long-term stability and data continuity of the measuring point.

[0033] like Figure 1 , Figure 2 As shown, the upper end of the fixing rod 2 is connected to the lower end of the upper connecting piece 1. The lower end of the upper connecting piece 1 and the fixing rod 2 are rotatably connected via a pivot, allowing the fixing rod 2 to rotate relative to the upper connecting piece 1 for easy installation and adjustment.

[0034] like Figure 2 , Figure 6As shown, the fixing rod 2 consists of two symmetrically arranged components, each with a straight upper part and a hook 11 at its lower end. The hooks 11 at the lower ends of both fixing rods can open and close. When the arrow-shaped rod 3 is pushed upwards, the two hooks 11 open outwards under the pressure of the tip of the arrow-shaped rod 3. Once the inverted triangular arrow-shaped part of the arrow-shaped rod 3 is inside the hook 11, the hook 11 closes, thus securely locking the arrow-shaped rod 3. This openable hook structure, combined with the inverted triangular arrow-shaped rod, enables quick locking and reliable fixation of the lower assembly mechanism.

[0035] like Figure 3 As shown, the lower assembly mechanism consists of an arrow-shaped rod 3, a hollow sphere 4, a limiting block 5, and a prism 6. The lower end of the arrow-shaped rod 3 is fixedly connected to the prism 6 by welding to ensure a firm and reliable connection, so that the prism 6 and the arrow-shaped rod 3 form an integral motion unit.

[0036] Prism 6 is used for coordinate and elevation measurements during building inspections. Its working principle is as follows: the total station emits an infrared laser to prism 6, which reflects the incident light back to the total station along its original direction. The total station accurately calculates the three-dimensional coordinates of the measurement point by measuring the round-trip time and angle parameters of the infrared laser. The displacement and settlement of the point can be determined by the difference in coordinate measurements at different times. Prism 6 is suspended and fixed below the beams and slabs 7 of the building structure via arrow-shaped rods 3, ensuring that the prism center is always located at the same spatial coordinate position. This guarantees the consistency of the measurement point position during multiple inspections, effectively improving the accuracy and comparative analysis value of displacement and settlement data.

[0037] like Figure 3 , Figure 4 , Figure 5 As shown, the hollow sphere 4 is a spherical object with a hollow center and a hollow hole 41 passing through it. The hollow sphere 4 is slidably fitted onto the arrow-shaped rod 3 through its hollow hole 41, located between the top of the arrow-shaped rod 3 and the limiting block 5, and can slide freely along the axial direction of the arrow-shaped rod 3 between the top of the arrow-shaped rod 3 and the limiting block 5.

[0038] The limiting block 5 is located in the middle of the arrow-shaped rod 3 and is fixedly connected to the arrow-shaped rod 3 by welding. The outer diameter of the limiting block 5 is larger than the inner diameter of the hollow hole 41 of the hollow sphere 4. Therefore, the limiting block 5 is used to limit the extreme position of the hollow sphere 4 sliding downward on the arrow-shaped rod 3, preventing the hollow sphere 4 from slipping off the lower end of the arrow-shaped rod 3. The limiting block 5 plays a key role in limiting the hollow sphere 4 during the fixing and disassembly of the device: when the arrow-shaped rod 3 is pushed upward, the hollow sphere 4 slides downward relative to the arrow-shaped rod 3 to the limiting block 5, where the limiting block 5 supports the hollow sphere 4 and pushes it into the interior of the fixing rod 2; when the arrow-shaped rod 3 is pulled downward, the hollow sphere 4 slides upward relative to the arrow-shaped rod 3 to the top of the arrow-shaped rod 3, where the top of the arrow-shaped rod 3 supports and assists the hollow sphere 4 in detaching from the round hook 11 of the fixing rod 2.

[0039] like Figure 1 As shown, the upper end of the arrow-shaped rod 3 has an inverted triangular arrow-shaped structure. The upper part of this inverted triangular arrow-shaped structure is smaller, making it easier to enter between the two round hooks 11 on the left and right, while the lower part is larger, forming a snap-fit ​​step surface.

[0040] When the prism needs to be fixed, the lower assembly mechanism is pushed upwards as a whole, so that the inverted triangular arrow-shaped structure at the upper end of the arrow-shaped rod 3 enters between the two round hooks 11 at the lower end of the fixing rod 2. During the upward movement of the inverted triangular arrow-shaped structure, its inclined surface contacts the inner wall of the round hooks 11, pushing the two round hooks 11 outwards. When the largest diameter portion of the inverted triangular arrow-shaped structure passes through the round hooks 11, the round hooks 11 close inwards under their own elastic restoring force. The large-sized stepped surface at the lower end of the inverted triangular arrow-shaped structure hangs on the upper surface of the round hooks 11. Under the action of natural gravity, the downward tendency of the lower assembly mechanism causes the inverted triangular arrow-shaped structure to be firmly hooked onto the round hooks 11, thus achieving the snap-fit ​​fixation between the lower assembly mechanism and the fixing rod 2. This snap-fit ​​method requires no additional tools; it can be completed simply by pushing upwards, making operation simple. At the same time, the gravity self-locking effect ensures the reliability of the fixation.

[0041] like Figure 1As shown, when the prism needs to be fixed at the measurement position, the operator holds the lower assembly mechanism and aligns the inverted triangular arrow-shaped structure at the upper end of the arrow-shaped rod 3 with the round hook 11 at the lower end of the fixing rod 2, and then pushes it upward. During the pushing process, the upper end of the arrow-shaped rod 3 passes through the hollow hole 41 of the hollow sphere 4, and the hollow sphere 4 slides downward relative to the arrow-shaped rod 3 to the limiting block 5. The limiting block 5 plays a dual role of limiting and pushing the hollow sphere 4. As the pushing continues, the hollow sphere 4 enters the interior of the fixing rod 2 under the push of the limiting block 5. At the same time, the inverted triangular arrow-shaped structure at the upper end of the arrow-shaped rod 3 passes through the round hook 11, and the round hook 11 returns to its original position and locks the arrow-shaped rod 3. At this time, due to the influence of natural gravity, the lower assembly mechanism as a whole has a downward tendency, and the inverted triangular arrow-shaped step surface at the upper part of the arrow-shaped rod 3 is tightly hung on the round hook 11 at the lower part of the fixing rod 2, thereby achieving a stable fixation. At this time, the prism 6 is in a fixed state, and coordinate and elevation measurements can be performed.

[0042] During the fixing operation, the hollow sphere 4 serves as a guide and auxiliary locking component. After entering the interior of the fixing rod 2, it increases the contact area between the upper end of the lower assembly mechanism and the fixing rod 2, thereby improving the stability and anti-shaking ability of the connection and ensuring that the position of the prism 6 remains stable during long-term monitoring.

[0043] like Figures 7 to 10 As shown, there are four device disassembly states when it is necessary to disassemble the device: Exit status one (e.g.) Figure 7 The lower assembly mechanism is pushed upwards as a whole, so that the hollow sphere 4 is fully inserted into the fixed rod 2 under the push of the limiting block 5. At this time, the inverted triangular arrow-shaped part of the arrow-shaped rod 3 is still engaged with the round hook 11, but the hollow sphere 4 has passed the position of the round hook 11 and entered the inner cavity of the fixed rod 2.

[0044] Exit Status Two ( Figure 8 Once the hollow sphere 4 is completely inside the fixed rod 2, the operator pulls the arrow-shaped rod 3 downwards. At this time, the hollow sphere 4 cannot pass through the hook 11 because it is inside the fixed rod 2, but it can slide upwards relative to the arrow-shaped rod 3 to the top of the rod 3. During the pulling process, the inverted triangular arrow-shaped part of the arrow-shaped rod 3 disengages from the hook 11, and the hollow sphere 4 connects with the hook 11 at the bottom of the fixed rod 2.

[0045] Exit Status 3 ( Figure 9 ): Continue pulling down the arrow-shaped rod 3, and the hollow sphere 4 begins to detach from the hook 11 at the bottom of the fixed rod 2. Because the hollow sphere 4 has a spherical structure and a smooth curved surface on its outer surface, it can smoothly roll over the opening of the hook 11 when it passes down, with low friction and no easy jamming, thus achieving smooth detachment.

[0046] Exit Status 4 ( Figure 10The lower assembly mechanism can be completely detached from the fixed rod 2, allowing the entire lower assembly mechanism to be removed and disassembled.

[0047] The disassembly process also requires no additional tools; simply push upwards and pull downwards to complete the entire disassembly operation, making it quick and easy. After disassembly, the lower assembly can be stored and stored as a whole to prevent prism 6 from being damaged or contaminated during non-inspection periods.

[0048] This invention, based on the fixed connection of the upper connector 1 to the structural beam slab 7, includes a fixing rod 2 with an openable hook 11 and a lower assembly mechanism composed of an arrow-shaped rod 3, a hollow sphere 4, a limiting block 5, and a prism 6. The lower assembly mechanism is quickly fixed by the interlocking action between the inverted triangular arrow-shaped structure at the upper end of the arrow-shaped rod 3 and the hook 11. The lower assembly mechanism is smoothly disassembled by the free sliding guidance of the hollow sphere 4 on the arrow-shaped rod 3. In the fixed state, the prism 6 is stably suspended below the structural beam slab 7, without occupying the upper space of the floor slab and beam top; in the disassembled state, the lower assembly mechanism can be removed as a whole without affecting the normal use of the building space.

[0049] Furthermore, since the upper connector 1 is fixedly connected to the fixed position of the beam slab 7 of the building structure, the position of the fixing rod 2 remains unchanged, while the lower assembly mechanism is positioned by the snap-fit ​​between the arrow-shaped rod 3 and the round hook 11. After each installation, the prism 6 can accurately return to the same spatial coordinate position, ensuring the high consistency of the measuring point position during multiple tests. This effectively solves the problem of data incomparability caused by the non-fixed measuring point position in traditional testing methods, and significantly improves the accuracy and scientific analysis value of the building structure displacement and settlement monitoring data.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A fixing device for mounting a prism in building inspection, comprising: The building structure beams and slabs (7) are characterized by further comprising: Upper connector (1), the upper end of which is connected to the structural beam (7) of the building; The fixing rod (2) has a hook (11) at its lower end; The lower assembly includes an arrow-shaped rod (3), a hollow sphere (4), a limiting block (5), and a prism (6). The arrow-shaped rod (3) is fixedly connected to the prism (6), and the hollow sphere (4) is slidably sleeved on the arrow-shaped rod (3). The limiting block (5) is provided on the arrow-shaped rod (3), and the hollow sphere (4) is provided between the top of the limiting block (5) and the top of the arrow-shaped rod (3).

2. The fixing device for mounting a prism for building inspection according to claim 1, characterized in that: The fixing rod (2) consists of two components, left and right, with the upper part being straight and the two round hooks (11) being openable and closed.

3. The fixing device for mounting a prism for building inspection according to claim 1, characterized in that: The hollow sphere (4) is a spherical object with a hollow center. The hollow hole (41) is located between the top of the arrow-shaped rod (3) and the limiting block (5), and can slide.

4. The fixing device for mounting a prism for building inspection according to claim 1, characterized in that: The limiting block (5) is located in the middle of the arrow-shaped rod (3) and is connected by welding.

5. The fixing device for mounting a prism for building inspection according to claim 1, characterized in that: The prism (6) is used for coordinate and elevation measurements during building inspection. It is connected to the arrow-shaped rod (3) and fixed by welding.

6. The fixing device for mounting a prism for building inspection according to claim 1, characterized in that: The lower end of the upper connector (1) is rotatably connected to the fixed rod (2).

7. A fixing device for mounting a prism for building inspection according to any one of claims 1-6, characterized in that: The upper end of the arrow-shaped rod (3) is an inverted triangular arrow shape. The arrow-shaped rod (3) is engaged with the round hook (11) at the lower end of the fixing rod (2) to fix the arrow-shaped rod (3).

8. A fixing device for mounting a prism for building inspection according to any one of claims 1-6, characterized in that: When the arrow-shaped rod (3) is pushed upward into the fixed rod (2), the hollow sphere (4) slides on the arrow-shaped rod (3) and the hollow sphere (4) is inserted into the round hook (11) at the lower end of the fixed rod (2). Under the action of natural gravity, the inverted triangular arrow at the upper end of the arrow-shaped rod (3) hangs on the round hook (11), realizing the quick snap-fit ​​and fixation of the lower combination mechanism and the fixed rod (2).

9. A fixing device for mounting a prism for building inspection according to any one of claims 1-6, characterized in that: When it is necessary to disassemble the lower assembly mechanism, push the arrow-shaped rod (3) upward to allow the hollow ball (4) to enter the fixed rod (2), and then pull the arrow-shaped rod (3) downward. The hollow ball (4) will then disengage from the lower hook (11) of the fixed rod (2) in sequence, thereby achieving rapid separation of the lower assembly mechanism from the fixed rod (2).

10. A fixing device for mounting a prism for building inspection according to claim 9, characterized in that: The lower assembly mechanism can be completely detached from the fixing rod (2) and removed as a whole.

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