A combined rangefinder for building construction and its usage method

Abstract

This invention discloses a combined rangefinder for building construction and its usage method, relating to the field of rangefinder technology. It includes a laser rangefinder, a suspension component, and a support structure. Two mounting plates are fixed to the upper end of a back plate, and two side support rods are inclinedly fixed to the side walls of the back plate. An adjustment seat is fixed to the end of the support rods, and the support seat is adjustablely mounted on the adjustment seat. The laser rangefinder is detachably mounted on the upper end of the support seat. The upper end of the support seat has several arc-shaped clamping blocks for holding the laser rangefinder. The bottom end of each arc-shaped clamping block is fixed with a lever block hinged to the inner wall of a hinge groove, and the end of the lever block is engaged between two adjacent elastic partitions. This invention solves the problem of poor measurement accuracy caused by the tilt of the traditional rangefinder supported by a tripod, which is easily affected by terrain. By rotating the arc-shaped clamping blocks in the opposite direction to remove the laser rangefinder and lifting the suspension component upwards, the rangefinder can be disassembled. The length of the suspension component and support structure is relatively short compared to the length of the tripod, occupying little space and making it easy to carry.

Description

Technical Field

[0001] This invention relates to the field of rangefinder technology, specifically to a combined rangefinder for building construction and its usage method. Background Technology

[0002] Commonly used rangefinders in existing technologies include ultrasonic rangefinders and laser rangefinders, which offer high measurement safety, high accuracy, low system energy consumption, and miniaturization. Currently, rangefinders are handheld by the user, which affects measurement accuracy due to the inability to be stably fixed. Tripods are commonly used as support for the rangefinder. In actual use, the rangefinder and tripod are assembled for architectural distance measurement. However, the current assembly method mainly uses screws, requiring a wrench to tighten the bolts. Therefore, a wrench needs to be carried as an auxiliary tool during the assembly and use of the rangefinder and tripod. Wrenches are small, easily lost, and inconvenient to disassemble after use, affecting the storage of the rangefinder. Furthermore, the tripod is relatively long, making it inconvenient to carry after disassembly. Therefore, this paper designs a combined rangefinder for construction and its usage method to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a combined rangefinder for building construction and its usage method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a combined rangefinder for building construction, comprising a laser rangefinder, a suspension component, and a support structure. The laser rangefinder includes a main control circuit and an infrared light source. The signal output terminal of the main control circuit is connected to a photosensitive element, the signal output terminal of the photosensitive element is connected to a control module, the signal output terminal of the photosensitive element is connected to a photoelectric conversion module, the signal output terminal of the photoelectric conversion module is connected to a calculation module, and the signal output terminal of the calculation module is connected to a display screen embedded in the outer wall of the laser rangefinder. The infrared laser is emitted after being adjusted by an optical lens inside the laser emission cavity. The laser beam reflected from the target is received by the photoelectric element. The calculation module measures the time from emission to reception of the laser beam, calculates the distance from the rangefinder to the target, and displays it on the display screen for the operator to refer to and record.

[0005] The suspension system includes two hanging plates and a back plate. The two hanging plates are fixed to the upper sides of the back plate, and the upper ends of both hanging plates are curved for hanging on the shoulders of the human body. The support structure includes a support rod, a support base, and an adjustment base. The support rod is inclined and fixed to the side wall of the back plate, and the adjustment base is fixed to the end of the support rod. The support base is adjustable and mounted on the adjustment base. The laser rangefinder is detachably mounted on the upper end of the support base. The upper end of the support base is provided with several arc-shaped clamps for holding the laser rangefinder. First, the two hanging plates are hung from the front of the human body on both shoulders, with the back plate resting against the chest. Then, the laser rangefinder is placed on the support base. Depending on the human body's standing posture, the support base can be adjusted in tilt on the adjustment base to ensure that the laser rangefinder is in a relatively horizontal state, thus realizing the installation of the laser rangefinder. The operator can then operate the laser rangefinder to measure distances.

[0006] The upper end of the support base has several hinge slots. The bottom end of the arc-shaped clamping block is fixed with a toggle block that is hinged to the inner wall of the hinge slot. The bottom surface inside the hinge slot is fixed with several elastic partitions. The end of the toggle block is stuck between two adjacent elastic partitions. After the laser rangefinder is placed on the support base, each toggle block is rotated around the hinge position. During the rotation, the end of the toggle block pushes the elastic partition to produce bending deformation, so as to pass over the elastic partition until the arc-shaped clamping block can no longer rotate. At this time, the arc-shaped clamping block can clamp the outer wall of the laser rangefinder and position the laser rangefinder.

[0007] In a further embodiment, the upper ends of several elastic partitions within the same hinge groove are arranged in an arc shape.

[0008] In a further embodiment, the upper end of the adjustment seat is provided with a placement groove for placing the support seat, and the radial sidewall inside the placement groove is provided with a plurality of adjustment grooves, and the radial sidewall of the support seat is fixed with a plurality of plug-in blocks that are respectively inserted into each adjustment groove.

[0009] In a further embodiment, the height of the plug block is 0.1-0.5 times the height inside the adjustment slot.

[0010] In a further embodiment, a spherical block is rotatably embedded in the bottom of the placement slot, and a slidable rod is fixed at the center of the bottom of the support base, which slides through the spherical block. A balance ball is provided at the bottom of the rod. The balance ball acts as a counterweight for the support base, and the spherical block will rotate freely on the bottom surface of the placement slot, ensuring that the laser rangefinder on the support base is always in a relatively horizontal state, which facilitates normal distance measurement by the laser rangefinder and reduces measurement errors.

[0011] In a further embodiment, the support structure further includes an extension rod, a matching seat, a tray, and an inverted T-shaped guide rod. The extension rod is fixed to the bottom end of the side wall of the support rod. The matching seat is rotatably disposed at the end of the extension rod. The inverted T-shaped guide rod is slidably inserted into the matching seat, and the tray is fixed to the upper end of the inverted T-shaped guide rod. The balance ball has a magnet embedded in it. The tray is an iron disc with a spherical structure on its upper surface that fits against the outer wall of the balance ball. No matter how the support seat is adjusted by the suspension rod driving the balance ball, the suspension rod is always in a vertical direction. At the same time, the magnet inside the balance ball attracts the tray in real time, and the inverted T-shaped guide rod slides along the matching seat to ensure that the tray is always in contact with the bottom end of the balance ball, preventing the balance ball from swinging freely around the spherical block. The purpose of this arrangement is to ensure that the spherical block can be rotated in the placement slot to adjust the balance of the support seat in real time, while also preventing the suspension rod from causing the balance ball to swing too much, requiring a long period of stillness before the support seat can be in a relatively horizontal state before the laser rangefinder can be operated for distance measurement.

[0012] In a further embodiment, the two mounting plates are adjustable to the back panel, and the two mounting plates are adjustable on the back panel to meet the needs of different users.

[0013] In a further embodiment, a hinge block is fixed to the bottom end of the hanging plate, and an inverted L-shaped notch is provided on the upper side of the back plate. The hinge block is rotatably disposed in the inverted L-shaped notch. A stainless steel spring is fixed to the bottom end inside the inverted L-shaped notch. After the hinge block is flipped to a vertical state around the hinge point, the end of the hinge block abuts against the corner side wall of the inverted L-shaped notch. At the same time, the end of the stainless steel spring abuts against the side wall of the hinge block. The hinge block is flipped around the hinge position, and the stainless steel spring is subjected to pressure from the hinge block, resulting in bending deformation. At the same time, the angle between the two hanging plates increases. It is only necessary to place the back plate in front of the chest, with the height of the two hanging plates higher than the shoulders. With the help of the elasticity of the stainless steel spring, the two handles are brought together, that is, the two hanging plates are flipped onto the shoulders, realizing quick wearing.

[0014] In a further embodiment, an inverted T-shaped rotating block is fixed to the bottom of the hanging plate, and an inverted L-shaped rotating groove is provided on the upper side of the back plate. An elliptical tension ring is placed inside the bottom of the inverted L-shaped rotating groove. Sliding rods are fixed to both sides of the long half-axis of the elliptical tension ring. A buffer groove is provided on the inner wall of the inverted L-shaped rotating groove to slide and insert with the sliding rods. The inverted T-shaped rotating block extends into the inverted L-shaped rotating groove and is located inside the elliptical tension ring. The hanging plate rotates around the inverted T-shaped rotating block as the rotation center, that is, the two hanging plates are rotated from a parallel state to be adjusted until the curved parts of the two hanging plates are in the same plane. During this process, the end of the inverted T-shaped rotating block rotates from the long half-axis to the short half-axis of the elliptical tension ring, and the elliptical tension ring deforms. Then, the back plate is placed in front of the chest, and the height of the two hanging plates is higher than the shoulders. The elastic potential energy generated when the elliptical tension ring deforms is used to rotate the inverted T-shaped rotating block in the opposite direction to reset it, that is, the two hanging plates are flipped to a parallel state and hung on the shoulders, so as to achieve quick wearing.

[0015] Preferably, the combination method of the above-mentioned modular rangefinder for building construction includes the following steps:

[0016] Two hanging plates are attached to the shoulders of the person from the chest, with the backrest resting against the chest. The laser rangefinder is then placed on the support base. The support base can be adjusted to a horizontal position based on the person's standing posture. This allows the laser rangefinder to be installed at chest level, off the ground. This design facilitates operation and eliminates the problem of inaccurate measurements caused by terrain in traditional tripod-supported rangefinders. The infrared laser beam is emitted after being adjusted by optical lenses inside the laser emission cavity. The laser beam reflected from the target is received by photoelectric elements. The calculation module measures the time from emission to reception, calculates the distance from the rangefinder to the target, and displays it on the screen for the operator to reference and record.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention relates to a combined rangefinder for construction and its usage method. It changes the traditional method of combining a tripod and rangefinder, using an arc-shaped clamp to hold the laser rangefinder. A suspension structure hangs the laser rangefinder, which is clamped to the support structure, on the worker's shoulder. The laser rangefinder is positioned in front of the worker's chest, off the ground, facilitating operation and measurement. It also solves the problem of poor measurement accuracy caused by terrain in traditional tripod-supported rangefinders. During disassembly, the arc-shaped clamp is rotated in the opposite direction to remove the laser rangefinder, and the suspension component is lifted upwards to remove the support structure. Furthermore, the length of the suspension component and support structure is shorter than the tripod, occupying less space and making it easy to carry. Attached Figure Description

[0019] Figure 1 This is an exploded view of the main structure of the present invention;

[0020] Figure 2 This is a cross-sectional view of the adjusting seat and support seat structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This is a partial structural diagram of the connection between the mounting plate and the back plate of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0025] Figure 7 This is a partial cross-sectional view of the back plate of the present invention;

[0026] Figure 8 This is a top sectional view of the elliptical tensioning ring and inverted T-shaped actuating block of the present invention.

[0027] In the diagram: 1. Back plate; 2. Hanging plate; 21. Hinge block; 22. Inverted T-shaped rotating block; 3. Support rod; 4. Adjusting seat; 41. Adjusting groove; 42. Spherical block; 5. Support seat; 51. Elastic partition; 52. Insertion block; 6. Arc-shaped clamping block; 61. Actuating block; 7. Balance ball; 8. Extension rod; 9. Matching seat; 10. Inverted T-shaped guide rod; 11. Tray; 12. Laser rangefinder; 13. Stainless steel spring; 14. Elliptical tension ring; 15. Slide rod. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-8

[0030] This embodiment provides a combined rangefinder for building construction and its usage method, including a laser rangefinder 12, a suspension component, and a support structure, such as... Figure 1 As shown, the laser rangefinder 12 includes a main control circuit and an infrared light source. The signal output terminal of the main control circuit is connected to a photosensitive element, the signal output terminal of the photosensitive element is connected to a control module, the signal output terminal of the photosensitive element is connected to a photoelectric conversion module, the signal output terminal of the photoelectric conversion module is connected to a calculation module, and the signal output terminal of the calculation module is connected to a display screen embedded in the outer wall of the laser rangefinder 12. The infrared laser is emitted after being adjusted by the optical lens inside the laser emission cavity. The laser beam reflected by the target is received by the photoelectric element. The calculation module measures the time from the emission to the reception of the laser beam, calculates the distance from the rangefinder to the target, and displays it on the display screen for the operator to refer to and record.

[0031] The calculation process is shown below. If the time required for light to travel back and forth between points A and B at a speed of c in the air is t, then the distance D between points A and B can be expressed as follows: D = ct / 2.

[0032] In the formula: D: distance between two measurement stations A and B, c: speed of light in the atmosphere, t: time required for light to travel back and forth between A and B once. Therefore, to measure the distance between A and B, we actually need to measure the time t it takes for light to travel.

[0033] like Figures 1-2 As shown, the suspension system includes two hanging plates 2 and a back plate 1. The two hanging plates 2 are fixed to the upper sides of the back plate 1, and the upper ends of both hanging plates 2 are curved for hanging on the shoulders of the human body. The support structure includes a support rod 3, a support seat 5, and an adjustment seat 4. The support rod 3 is inclined and fixed to the side wall of the back plate 1. The adjustment seat 4 is fixed to the end of the support rod 3. The support seat 5 is adjustable and set on the adjustment seat 4. The laser rangefinder 12 is detachably installed on the upper end of the support seat 5. First, the two hanging plates 2 are hung from the chest of the human body on both shoulders, with the back plate 1 resting against the chest. Then, the laser rangefinder 12 is set on the support seat 5. According to the standing posture of the human body, the support seat 5 can be adjusted on the adjustment seat 4 to ensure that the laser rangefinder 12 is in a relatively horizontal state, thus realizing the installation of the laser rangefinder 12. The operator can operate the laser rangefinder 12 to measure distances.

[0034] Several arc-shaped clamps 6 are provided on the upper end of the support base 5 for clamping the laser rangefinder 12. The laser rangefinder 12 is clamped by the arc-shaped clamps 6 to ensure that the laser rangefinder 12 is stably placed on the support base 5, and to prevent the laser rangefinder 12 from losing its limit and slipping off the support base 5 when the tilt angle of the support base 5 is adjusted on the adjustment seat 4.

[0035] The upper end of the support base 5 is provided with several hinge slots. The bottom end of the arc-shaped clamping block 6 is fixed with a toggle block 61 that is hinged to the inner wall of the hinge slot. Several elastic partitions 51 are fixed inside the bottom surface of the hinge slot. The end of the toggle block 61 is stuck between two adjacent elastic partitions 51. After the laser rangefinder 12 is placed on the support base 5, each toggle block 61 is rotated around the hinge position. During the rotation, the end of the toggle block 61 pushes the elastic partition 51 to produce bending deformation, so as to pass over the elastic partition 51 until the arc-shaped clamping block 6 can no longer rotate. At this time, the arc-shaped clamping block 6 can clamp on the outer wall of the laser rangefinder 12 and position the laser rangefinder 12.

[0036] The end of the actuating block 61 is locked between two adjacent elastic partitions 51, which ensures that without external force intervention, the actuating block 61 can pass over the elastic partition 51 and lock between an adjacent elastic partition 51, thereby preventing the arc-shaped clamping block 6 from arbitrarily flipping around the hinge position through the actuating block 61, which would cause the clamped laser rangefinder 12 to loosen and fall off.

[0037] The elastic partition 51 can be made of PVC plastic or other elastic components with reversible deformation.

[0038] The laser rangefinder 12 is positioned on the chest of the operator and is off the ground. This makes it easier for the operator to use the rangefinder for distance measurement and also solves the problem that the traditional rangefinder supported by a tripod is easily affected by the terrain, resulting in poor measurement accuracy due to tilt.

[0039] During disassembly, rotate the arc-shaped clamp 6 in the opposite direction to remove the laser rangefinder 12, and at the same time lift the suspension piece upwards to separate it from the human shoulder. This allows the support structure to be removed. Furthermore, the combined length of the suspension piece and the support structure is relatively short compared to the length of the tripod, taking up little space and making it easy to carry.

[0040] Further improvements were made based on Example 1:

[0041] like Figure 2 As shown, the upper ends of several elastic partitions 51 in the same hinge groove are arranged in an arc shape. The purpose of this arrangement is that when the actuating block 61 rotates around the rotation position, it can contact the end of each elastic partition 51, ensuring that when the actuating block 61 does not rotate, it can be stuck between two adjacent elastic partitions 51, thereby restricting the clamping position of the arc-shaped clamping block 6.

[0042] like Figure 2 As shown, a spherical block 42 is rotatably embedded at the bottom of the placement groove. A hanging rod that slides through the spherical block 42 is fixed at the center of the bottom of the support base 5, and a balance ball 7 is provided at the bottom of the hanging rod. The support base 5 can rotate freely in the placement groove with the spherical block 42 as the center of adjustment, thereby adjusting the tilt angle of the support base 5 in the placement groove. The hanging rod is connected to the balance ball 7 to balance the support base 5. When the suspension is suspended on the human shoulder, the laser rangefinder 12 is fixed on the support base 5. Due to the different standing postures of different users and the unevenness of the ground, the adjustment base 4 will tilt to a certain extent, but the tilt angle will not be too large. Therefore, no matter how the adjustment base 4 tilts, the spherical block 42 will rotate freely on the bottom surface of the placement groove through the counterweight of the support base 5 by the balance ball 7, ensuring that the laser rangefinder 12 on the support base 5 is always in a relatively horizontal state, which facilitates the normal distance measurement of the laser rangefinder 12 and reduces measurement error.

[0043] The upper end of the adjustment seat 4 is provided with a placement groove for placing the support seat 5. Several adjustment grooves 41 are opened on the radial side wall inside the placement groove. Several plug-in blocks 52 are fixed on the radial side wall of the support seat 5, which are respectively inserted into each adjustment groove 41. When the support seat 5 is adjusted in the placement groove of the adjustment seat 4, the plug-in blocks 52 are used to move up and down along the corresponding adjustment groove 41 to adjust the tilt angle in coordination with the support seat 5. The function of the plug-in blocks 52 is to prevent the support seat 5 from rotating in the placement groove, which would affect the linear emission of infrared light from the laser rangefinder 12 and thus easily lead to measurement errors. If the ranging position needs to be changed, the operator only needs to turn his body to adjust the direction of infrared light emission.

[0044] The height of the plug block 52 is 0.1-0.5 times the height inside the adjustment slot 41. The height of the plug block 52 is much smaller than the vertical height inside the adjustment slot 41. The adjustment slot 41 has enough height to accommodate the up-and-down movement of the plug block 52.

[0045] In addition, since the tilt angle fluctuation of the adjustment seat 4 will not change significantly due to the standing posture of the human body or unevenness of the standing ground, the plug-in block 52 also has another function: the rotation range of the support seat 5 is the same as the rotation range of the plug-in block 52 in the adjustment groove 41, so as to avoid the support seat 5 from undergoing a large rotation operation in the placement groove, which would cause the laser rangefinder 12 to rotate too much and affect the normal operation of the distance measurement.

[0046] like Figure 1As shown, the support structure also includes an extension rod 8, a matching seat 9, a tray 11, and an inverted T-shaped guide rod 10. The extension rod 8 is fixed to the bottom end of the side wall of the support rod 3. The matching seat 9 is rotatably mounted at the end of the extension rod 8. The inverted T-shaped guide rod 10 is slidably inserted into the matching seat 9, and the tray 11 is fixed to the upper end of the inverted T-shaped guide rod 10. The balance ball 7 has a magnet embedded in it. The tray 11 is an iron plate, and the upper surface of the tray 11 has a spherical structure and is in contact with the outer wall of the balance ball 7. No matter how the support seat 5 adjusts the balance ball 7 through the suspension rod, the suspension rod is always in a vertical direction. Meanwhile, the magnet inside the balance ball 7 is used to attract the tray 11 in real time, and the inverted T-shaped guide rod 10 slides along the matching seat 9 to ensure that the tray 11 is in real time attached to the bottom of the balance ball 7, so as to prevent the balance ball 7 from swinging freely around the spherical block 42. The purpose of this setting is to ensure that the spherical block 42 can be flipped in the placement slot to adjust the balance of the support seat 5 in real time, and to prevent the balance ball 7 from swinging too much due to the suspension rod. It would take a long time for the support seat 5 to be in a relatively horizontal state before the laser rangefinder 12 can be operated to measure the distance.

[0047] Further improvements were made based on Example 1:

[0048] When wearing the suspension device, the staff holds two hanging plates 2 in front of their chest, and then hangs the curved part of the hanging plates 2 on the shoulders of the person to complete the wearing. Although this straight up and down wearing method can achieve the wearing, the distance between the two hanging plates 2 is fixed. For people of different body types, the above wearing method makes it inconvenient for the arms to bend and exert force during the wearing process. The two hanging plates 2 are adjustable to the back plate 1, and the two hanging plates 2 can be adjusted on the back plate 1 to meet the needs of different users.

[0049] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, a hinge block 21 is fixed to the bottom of the hanging plate 2. An inverted L-shaped notch is provided on the upper side of the back plate 1. The hinge block 21 is rotatably set in the inverted L-shaped notch. A stainless steel spring piece 13 is fixed to the bottom of the inverted L-shaped notch. After the hinge block 21 is flipped to a vertical state around the hinge, the end of the hinge block 21 abuts against the corner side wall of the inverted L-shaped notch. At the same time, the end of the stainless steel spring piece 13 abuts against the side wall of the hinge block 21. In a natural state, the hinge block 21 is affected by the elastic potential energy from the stainless steel spring piece 13 and will flip to a vertical state around the hinge position, that is, the end of the hinge block 21 abuts against the corner side wall of the inverted L-shaped notch. This ensures that the hanging plate 2 is vertically distributed on the back plate 1 and is not easy to slip off the shoulder when worn.

[0050] Handles are installed on the side walls of the two mounting plates 2 that are far apart from each other, such as... Figure 3As shown, when wearing it, hold the handles with both hands and pull them to the side that is far apart from each other, so that the hinge block 21 flips around the hinge position. The stainless steel spring 13 is subjected to pressure from the hinge block 21 and produces bending deformation. At the same time, the angle between the two hanging plates 2 increases. Simply place the back plate 1 in front of the chest, and the height of the two hanging plates 2 is higher than the shoulders. With the help of the elasticity of the stainless steel spring 13, the two handles are brought together, that is, the two hanging plates 2 are flipped onto the shoulders, so as to achieve quick wearing.

[0051] The difference from Example 3 is that:

[0052] like Figure 1 , Figure 6 , Figure 7 as well as Figure 8 As shown, an inverted T-shaped rotating block 22 is fixed to the bottom of the hanging plate 2. An inverted L-shaped rotating groove is provided on the upper side of the back plate 1. An elliptical tension ring 14 is placed at the bottom of the inverted L-shaped rotating groove. Slide rods 15 are fixed to both sides of the long half-axis of the elliptical tension ring 14. A buffer groove is provided on the inner wall of the inverted L-shaped rotating groove to slide into the slide rods 15. The inverted T-shaped rotating block 22 extends into the inverted L-shaped rotating groove and is located inside the elliptical tension ring 14. In the natural state, the two sides of the end of the inverted T-shaped rotating block 22 are limited by the small gap between the short half-axis of the elliptical tension ring 14. Without external force to assist in rotating the hanging plate 2, the end of the inverted T-shaped rotating block 22 cannot operate automatically inside the elliptical tension ring 14. This ensures that the two hanging plates 2 are distributed parallel to each other on the back plate 1, and they are not easy to slip off the shoulder when worn.

[0053] The two mounting plates have handles on their two side walls for hand gripping, such as... Figure 6 As shown, hold the handles with both hands and rotate the hanging plate 2 around the inverted T-shaped rotating block 22 as the rotation center. That is, rotate and adjust the two hanging plates 2 from a parallel state until the curved parts of the two hanging plates 2 are in the same plane. During this process, the end of the inverted T-shaped rotating block 22 rotates from the long half axis to the short half axis of the elliptical tension ring 14, and the elliptical tension ring 14 deforms. Then, place the back plate 1 in front of the chest, and the height of the two hanging plates 2 is higher than the shoulders. With the help of the elastic potential energy generated when the elliptical tension ring 14 deforms, rotate the inverted T-shaped rotating block 22 in the opposite direction to reset it, that is, flip the two hanging plates 2 to a parallel state and hang them on the shoulders to achieve quick wearing.

[0054] Users can choose the wearing method according to their own needs, as long as it meets the requirements of convenient wearing.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined rangefinder for building construction, comprising a laser rangefinder (12), a suspension component, and a support structure, wherein the laser rangefinder (12) includes a main control circuit and an infrared light source, a photosensitive element is connected to the signal output terminal of the main control circuit, a control module is connected to the signal output terminal of the photosensitive element, a photoelectric conversion module is connected to the signal output terminal of the photosensitive element, a calculation module is connected to the signal output terminal of the photoelectric conversion module, and a display screen embedded in the outer wall of the laser rangefinder (12) is connected to the signal output terminal of the calculation module. The feature is that: The suspension includes two hanging plates (2) and a back plate (1). The two hanging plates (2) are fixed on both sides of the upper end of the back plate (1), and the upper ends of the two hanging plates (2) are curved for hanging on the human shoulder. The support structure includes a support rod (3), a support seat (5), and an adjustment seat (4). The support rod (3) is inclined and fixed to the side wall of the back plate (1). The adjustment seat (4) is fixed to the end of the support rod (3). The upper end of the adjustment seat (4) is provided with a placement groove for placing the support seat (5). Several adjustment grooves (41) are opened in the radial side wall of the placement groove. Several plug-in blocks (52) are fixed in the radial side wall of the support seat (5) and are respectively inserted into each adjustment groove (41). The height of the plug-in block (52) is 0.1-0.5 times the height of the adjustment groove (41). A spherical block (42) is rotatably embedded in the bottom end of the placement groove. The support seat (5) is adjustablely set in the placement groove of the adjustment seat (4). The laser rangefinder (12) is detachably installed on the upper end of the support seat (5). The upper end of the support base (5) is provided with several arc-shaped clamping blocks (6) for clamping the laser rangefinder (12). The upper end of the support base (5) is provided with several hinge slots. The bottom end of the arc-shaped clamping block (6) is fixed with a moving block (61) that is hinged to the inner wall of the hinge slot. The bottom surface inside the hinge slot is fixed with several elastic partitions (51). The end of the moving block (61) is stuck between two adjacent elastic partitions (51). The support base (5) has a sliding through spherical block (42) fixed at the bottom center, and a balance ball (7) is provided at the bottom of the sliding through spherical block (42). The support structure also includes an extension rod (8), a matching seat (9), a tray (11), and an inverted T-shaped guide rod (10). The extension rod (8) is fixed to the bottom of the side wall of the support rod (3). The matching seat (9) is rotatably disposed at the end of the extension rod (8). The inverted T-shaped guide rod (10) is slidably inserted into the matching seat (9), and the tray (11) is fixed to the upper end of the inverted T-shaped guide rod (10). The balance ball (7) is embedded with a magnet. The tray (11) is an iron disc. The upper surface of the tray (11) is a spherical structure and fits against the outer wall of the balance ball (7).

2. The combined rangefinder for building construction according to claim 1, characterized in that: The upper ends of several elastic partitions (51) in the same hinge slot form an arc-shaped structure.

3. The combined rangefinder for building construction according to claim 1, characterized in that: The two mounting plates (2) are adjustablely connected to the back plate (1).

4. A combined rangefinder for building construction according to claim 3, characterized in that: The bottom end of the hanging plate (2) is fixed with a hinge block (21). The upper side of the back plate (1) is provided with an inverted L-shaped notch. The hinge block (21) is rotatably set in the inverted L-shaped notch. The bottom end of the inverted L-shaped notch is fixed with a stainless steel spring piece (13). After the hinge block (21) is flipped around the hinge to a vertical state, the end of the hinge block (21) abuts against the corner side wall of the inverted L-shaped notch, and at the same time the end of the stainless steel spring piece (13) abuts against the side wall of the hinge block (21).

5. A combined rangefinder for building construction according to claim 3, characterized in that: The bottom end of the hanging plate (2) is fixed with an inverted T-shaped rotating block (22). An inverted L-shaped rotating groove is provided on the upper side of the back plate (1). An elliptical tension ring (14) is placed at the bottom inside the inverted L-shaped rotating groove. Slide rods (15) are fixed on both sides of the long half-axis of the elliptical tension ring (14). A buffer groove is provided on the inner wall of the inverted L-shaped rotating groove to slide and insert with the slide rods (15). The inverted T-shaped rotating block (22) extends into the inverted L-shaped rotating groove and is located inside the elliptical tension ring (14).

6. A method for assembling a modular rangefinder for building construction, employing a modular rangefinder for building construction as described in any one of claims 1-5, characterized in that, Includes the following steps: Two hanging plates (2) are hung from the chest of the human body on both shoulders, with the back plate (1) resting against the chest. Then, the laser rangefinder (12) is placed on the support base (5). According to the standing posture of the human body, the support base (5) automatically adjusts its tilt angle in the placement groove of the adjustment seat (4) through the ball block (42). The plug block (52) moves up and down along the corresponding adjustment groove (41) to adjust the tilt angle and prevent the support base (5) from rotating. At the same time, the magnet embedded in the balance ball (7) attracts the iron tray (11) to each other. The tray (11) is in real time attached to the bottom of the balance ball (7). The inverted T-shaped guide rod (10) slides along the matching seat (9) to follow the position change of the balance ball (7) and suppress the excessive swing of the hanging rod. Ensure that the laser rangefinder (12) is in a relatively horizontal state to achieve the installation of the laser rangefinder (12). The laser rangefinder (12) is located in front of the staff's chest, off the ground, which makes it convenient for the operator to operate the rangefinder to measure distance. At the same time, it solves the problem that the traditional use of tripod to support the rangefinder is easily affected by the terrain, resulting in poor measurement accuracy due to tilt. When the staff operates the laser rangefinder (12) to measure distance, the infrared laser is emitted after being adjusted by the optical lens inside the laser emission cavity. The laser beam reflected by the target is received by the photoelectric element. The calculation module determines the time from the emission to the reception of the laser beam, calculates the distance from the rangefinder to the target, and displays it on the display screen for the operator to refer to and record.

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