A laser plummet target device for elevator standard section

Abstract

The utility model discloses a laser plummet cursor receiving target device special for elevator standard section, including receiving target frame, four two two opposite jacks, strip activity ware, receiving target frame includes the frame main part of the middle hollow part being equipped with transparent plastic sheet, four vertical fixed branch of frame main part bottom surface, and the branch is located the outside of standard section, four jacks are connected with four branch one to one screw threads, and the both sides of standard section are pressed between four jacks, and the activity ware is located the above center of transparent plastic sheet, and the bottom surface of activity ware is vertically fixed with cursor pointer, the top surface of frame main part provides two roof boards in the outside of transparent plastic sheet, and two roof boards are perpendicular to activity ware, and the length both ends of activity ware are connected on two roof boards, in the width and length direction of activity ware, the position of activity ware relative to roof board is adjusted through width adjusting mechanism, length adjusting mechanism respectively. Cursor pointer can point to the spot of laser beam vertical shooting on transparent plastic sheet.

Description

Technical Field

[0001] This utility model relates to the technical field of standard sections of elevators, and in particular to a laser plumb line cursor receiving target device for a standard section of an elevator. Background Technology

[0002] Currently, there are many circular structures in China, such as chimneys, heat absorption towers, cooling towers, and various circular storage tanks. The construction techniques for circular structures are generally slipform and formwork casting. During construction, it is necessary to determine the center of the circular structure at different heights, and use this center as the basis for measurement and construction. For example, control of verticality and external dimensions is achieved through vertical measurement of the center. First, the center is determined on a standard section located at a high altitude, and then the radius is measured using this center as a reference to control the design geometric dimensions. Radius measurement is further achieved using a standard section of a vertical lift as the measurement point framework. The verticality of the structure depends entirely on the accuracy of the vertical measurement of the center. Only by ensuring the accurate position of the center in any plane in the vertical direction can the geometric dimensions of the structure on the same plane as the center be obtained by measuring the radius, thus achieving control of the external dimensions. Therefore, determining the center of a circular structure is crucial.

[0003] Measuring the radius of a circular structure typically involves using a laser device or similar equipment to emit a vertical laser beam upwards near the ground. This laser beam is positioned at the center of the circle at the bottom of the structure. Since standard sections are stacked one on top of another, the center of the circle at the bottom of each section forms the foundation. Generally, an adjustable circular iron plate is clamped at the bottom of each standard section. The center mark is painted on the ground-facing side of this plate, and the laser beam illuminates this side. Construction workers determine the foundation of the standard section by continuously adjusting the center mark to align with the laser beam. However, in this observation, because the circular iron plate is located at the bottom of the standard section and the center mark is on its bottom surface, workers often have to look down and turn their heads to observe the bottom of the plate from below.

[0004] During this process, it is troublesome for construction workers to locate the points, and the accuracy is not high. In view of this situation, there is an urgent need for a special laser plumb line receiver target device for elevator standard sections, which can easily determine the position of the vertically emitted laser beam on each standard section, so as to improve the measurement accuracy of the center of the circle, improve work efficiency, and control the verticality and geometric dimensions of circular structures such as solar thermal engineering heat absorption towers. Utility Model Content

[0005] The purpose of this invention is to provide a dedicated laser plumb line cursor receiving target device for elevator standard sections, which facilitates the determination of the position of the vertically emitted laser beam on each standard section, thereby overcoming the problems existing in related technologies.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A laser plumb line receiving target device for a standard section of an elevator includes: a receiving target frame, four opposing top rods, a width adjustment mechanism, a length adjustment mechanism, parallel transparent plastic plates, and strip-shaped actuators.

[0008] The receiving target frame includes a frame body with a hollow center and four legs that are vertically fixed to the bottom surface of the frame body. The legs are located on the outside of the standard section.

[0009] The four push rods are threadedly connected to the four legs, and the standard section is supported on both sides between the four push rods.

[0010] The transparent plastic plate is positioned at the cutout and its width is greater than that of the actuator.

[0011] The actuator is located above the transparent plastic plate, and cursor pointers are vertically fixed on both sides of the actuator;

[0012] The top surface of the frame body is provided with two top plates located outside the transparent plastic plate. The two top plates are perpendicular to the actuator, and the two ends of the actuator are connected to the two top plates.

[0013] In the width and length directions of the actuator, the top plate adjusts the position of the actuator relative to the top plate through the width adjustment mechanism and the length adjustment mechanism, respectively.

[0014] Furthermore, the width adjustment mechanism includes two width strip holes and two fasteners;

[0015] The top plate has a width strip hole with a length perpendicular to the actuator. Fasteners pass through each end of the actuator and the width strip hole. The position of the actuator can be adjusted by adjusting the position of the fasteners relative to the width strip hole.

[0016] Furthermore, the length adjustment mechanism includes two length strip holes opened at both ends of the actuator, the length of which is perpendicular to the width strip hole;

[0017] The actuator, the length strip hole, and the width strip hole are all inserted through the same fastener.

[0018] Furthermore, the main frame body includes two first frame strips arranged symmetrically front to back and two second frame strips arranged symmetrically left to right;

[0019] Two parallel second frame bars are vertically fixed between two first frame bars, and four support legs are respectively fixed to the ends of the two first frame bars;

[0020] The transparent plastic sheet is fixed at the four corners to the four ends of the two second frame strips.

[0021] Furthermore, the first frame strip includes a first horizontal plate and a second vertical plate that are fixed vertically. The first vertical plate is located on the top surface of the first horizontal plate, and the two second frame strips and the two top plates abut against the two first vertical plates at their ends.

[0022] The second frame strip includes a second horizontal plate and a second vertical plate that are fixed vertically. The two ends of the second horizontal plate are attached to the two first horizontal plates, and the four corners of the transparent plastic plate are fixed to the two second horizontal plates.

[0023] The two ends of the second vertical plate are vertically fixed between the top plate and the second horizontal plate.

[0024] Furthermore, there are inherent connecting plates between the front and rear ends of the two second frame strips, and the two connecting plates and the two second frame strips form a hollow space in the middle, with the connecting plates attached to the first horizontal plate.

[0025] Furthermore, the support leg has a 90° bent plate cross-section, and the line connecting the four cross-sections lies on the same rectangle; a nut is fixed on the inner side of the support leg and sleeved on the top rod, and the top rod is threadedly connected to the nut.

[0026] Furthermore, the width of the actuator is no greater than 60mm.

[0027] Furthermore, it also includes a steel ruler, the end of which can be fitted onto the cursor pointer on the top surface of the actuator.

[0028] Furthermore, the transparent plastic sheet is rectangular.

[0029] In the above technical solution, the present invention has the following beneficial effects:

[0030] In use, first attach the main frame body to the bottom of the marked frame. Since the bottom of the standard section has a rectangular frame, the main frame body should be positioned on the top surface of this rectangular frame to ensure it is level. The support legs should be located near the outer sides of the rectangular frame, limiting the range of movement of the main frame body relative to the rectangular frame of the standard section. Then, by turning the four push rods (acting as set screws), the ends of the four push rods clamp the sides of the main frame body. Continue this process until the main frame body is properly positioned on the standard section.

[0031] At the bottom of the circular structure, after setting up the laser plumb line and turning on the laser emission switch, a laser beam will be emitted vertically upwards. A red spot will then appear on the transparent plastic plate; this spot indicates the center of the circular structure's bottom has been transferred to the plane at the height of the transparent plastic plate. Adjust the width and length adjustment mechanisms until the cursor pointer aligns with the laser beam spot on the transparent plastic plate. At this point, the steel needle at the top of the cursor pointer indicates the center of the circle, facilitating subsequent radius measurements. The bottom of the cursor pointer should be close to the transparent plastic plate with a gap, minimizing this gap to prevent scratching or rubbing against the plate. The actuator is strip-shaped, while the transparent plastic plate is a bare flat plate, wider than the actuator, allowing the cursor pointer's position to be observed visually. Because the laser beam position can be observed from the top surface of the transparent plastic plate, the construction personnel can observe from top to bottom, finally indicating the center position from the cursor pointer on the top surface of the actuator, making the measurement more accurate and intuitive. Dismantling is achieved by simply turning the top rod, and the receiving target frame is easily installed on standard sections disassembled to different heights. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0033] Figure 1 This is a top view of the laser plumb line cursor receiving target device disclosed in this utility model.

[0034] Figure 2 for Figure 1 Cross-sectional view at point D;

[0035] Figure 3 for Figure 2 Cross-sectional view at point C;

[0036] Figure 4 This is a schematic diagram of the structure of the transparent plastic sheet disclosed in this utility model;

[0037] Figure 5 This is a schematic diagram of the receiving target frame disclosed in this utility model;

[0038] Figure 6 This is a schematic diagram of the structure of the laser plumb line cursor receiving target device disclosed in this utility model. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0040] It should be noted that the terms "above," "one end," "up," etc. used in this document indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Similar expressions are only for illustrative purposes 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 this utility model. In addition, the terms "part," "two parts," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] like Figure 1-6 The device shown is a laser plumb line receiver target for a standard section of an elevator, comprising a receiver target frame 1, four opposing top rods 2, a width adjustment mechanism, a length adjustment mechanism, parallel transparent plastic plates 3, and a strip-shaped actuator 4.

[0042] The receiving target frame 1 includes a frame body with a hollow center and four legs vertically fixed to the bottom surface of the frame body, with the legs located outside the standard section. Four push rods 2 are threadedly connected to the four legs, and the standard section is supported between the four push rods 2 on both sides. A transparent plastic plate 3 is positioned in the hollow center and is wider than the actuator. The actuator 4 is located at the center above the transparent plastic plate 3, with cursor pointers 41 vertically fixed on both sides of the actuator 4. The top surface of the frame body provides two top plates 11 located outside the transparent plastic plate 3, perpendicular to the actuator 4, with both ends of the actuator 4 connected to the two top plates 11. The position of the actuator 4 relative to the top plates 11 is adjusted by a width adjustment mechanism and a length adjustment mechanism, respectively, in the width and length directions of the actuator 4.

[0043] The receiving target frame 1 serves as the mounting foundation for the entire laser plumb line cursor receiving target device. For example, the frame body is a U-shaped structure without end caps, comprising two opposing first frame strips 13 and two opposing second frame strips 12. The two ends of the second frame strips 12 are vertically fixed between the two first frame strips 13. Support legs are fixed downwards at the four corners of the receiving target frame 1. In use, the bottom surface of the receiving target frame 1 rests on the rectangular frame at the bottom of the standard section frame. The support legs are located on the outside of the standard section, preferably on both sides of the standard section's width. This reduces the length of the receiving target frame 1, saving materials and increasing the strength of the receiving target frame 1 itself. The initial position of the support legs is close to both sides of the standard section. By using the screw-on top rods 2, the position of the top rods 2 can be adjusted to achieve adjustable distance between two corresponding top rods 2, thereby clamping both sides of the standard section between the four top rods 2. The four top rods 2 are parallel in axis and point perpendicularly to the clamped sides of the standard section. This clamping method is to meet the construction requirement that holes cannot be drilled on the standard section. In addition, the top rod 2 can be made directly from bolts, which is easy to source.

[0044] The transparent plastic plate 3 and the actuator 4 are arranged in parallel. The transparent plastic plate 3 is a horizontal thin plate. When the laser beam is vertically incident, a red spot appears on the transparent plastic plate 3. The four corners of the transparent plastic plate 3 are fixed to the central cutout of the receiving target frame 1 with screws or other fasteners, so that the upper and lower surfaces of the transparent plastic plate 3 are fully exposed. The transparent plastic plate is a component for receiving the laser beam of the laser alignment instrument. Four circular holes are opened on the transparent plastic plate, corresponding to the four circular holes on the receiving target frame 1. The transparent plastic plate is fixed to the receiving target frame 1 with screws. There is a vertical gap between the transparent plastic plate 3 and the actuator 4, which facilitates clear visual observation of the actuator 4, the transparent plastic plate 3, and the cursor pointer 41. The actuator 4 is a strip-shaped thin plate with a width much smaller than that of the transparent plastic plate 3 and a length greater than that of the transparent plastic plate. Preferably, the width of the actuator 4 does not exceed 6 cm, or is less than 1 / 4 of the width of the transparent plastic plate. This minimizes the area of ​​the actuator 4 that obstructs the transparent plastic plate 3, making it easier to fully observe the position of the cursor pointer 41 relative to the red spot with the naked eye.

[0045] The top surface of the main frame has two top plates 11 located outside the transparent plastic plate 3. This positioning is designed to ensure that the top plates 11 minimize their impact on the observation field of the actuator 4 and the transparent plastic plate 3. The top plates 11 are an integral part of the receiving target frame 1, serving to support the actuator 4 and forming the mounting base for the actuator 4.

[0046] The cursor pointer 41 is vertically inserted through the actuator 4, so that the top and bottom surfaces of the actuator 4 are respectively equipped with cursor pointers 41. The two cursor pointers 41 are coaxially arranged, which can extend the visual length of the cursor pointer 41 and make it easier to observe the position of the cursor pointer 41 relative to the red spot. After the center position is determined, subsequent measurement work can be carried out using traditional measurement methods, such as measuring the radius between the center and the point to be measured with a steel ruler. For example, the actuator 4 is made of flat steel, and the cursor pointer is formed by welding a 3 mm thick steel nail through the center of the flat steel.

[0047] The width adjustment mechanism and the length adjustment mechanism are used to adjust the position of the actuator 4 relative to the receiving target frame 1 in a two-dimensional direction, so that the cursor pointer 41 coincides with the red spot, and the position of the cursor pointer 41 is the center position of the standard section. The technical solutions of the width adjustment mechanism and the length adjustment mechanism can be found in the prior art below, or in the preferred embodiments below.

[0048] Optionally, the width adjustment mechanism consists of two linear modules arranged along the width direction of the actuator 4, the two linear modules being fixed on two top plates 11, and the linear modules being provided with width sliders that can slide along the width direction of the actuator 4.

[0049] Optionally, the length adjustment mechanism is a linear module arranged along the length direction of the actuator 4. The bottom surface of the linear module is fixed on two width sliders. The linear module of the length adjustment mechanism is provided with a length slider that can slide along the length direction of the actuator 4. The actuator 4 is fixed on the length slider.

[0050] In a preferred embodiment, the width adjustment mechanism includes two width strip holes 111 and two fasteners 5; the top plate 11 has width strip holes 111 with a length perpendicular to the actuator 4, and fasteners pass through each end of the length of the actuator 4 and the width strip holes 111. The position of the actuator 4 can be adjusted by adjusting the position of the fasteners 5 relative to the width strip holes 111.

[0051] Optionally, fastener 42 is a bolt with a nut and a matching nut. The top plate 11 and the actuator are clamped between the nut and the nut.

[0052] The length adjustment mechanism includes two length strip holes 42 opened at both ends of the actuator 4, the length of which is perpendicular to the width strip hole 111.

[0053] The actuator 4, the length strip hole 42, and the width strip hole 111 are all connected to the same fastener 5. This design is low-cost and easy to maintain.

[0054] For example, the actuator 4 is made of flat steel, with a thickness of 3mm and a width of 35mm. A long strip hole 42 is cut into the flat steel. The fastener 5 is a component that fixes the actuator to the receiving target frame 1, consisting of a nut and a screw. The nut is welded with an iron plate and can be tightened by hand without the use of other tools. The actuator can be adjusted arbitrarily in the direction of the long strip hole 42. After being adjusted to the desired position, it can be tightened and fixed to the receiving target frame using the fastener 5.

[0055] During assembly, first, the transparent plastic plate 3 is fixed to the receiving target frame 1 with screws, and then the actuator is assembled to the receiving target frame 1 using 5 fasteners. This completes the assembly. Such a width adjustment mechanism and length adjustment mechanism structure is simple to assemble.

[0056] When using it, first fix the laser plumb line cursor receiving target device on the standard section of the elevator where the height to be measured is required. Fix the position so that the transparent plastic plate receiving the laser beam is roughly in the center of the standard section. Use the top rod 2 to fix the laser plumb line cursor receiving target device.

[0057] At the bottom of the circular structure, set up the laser plumb line. After alignment, turn on the laser emission switch to emit a laser beam vertically upwards. At this point, a red spot will be seen on the transparent plastic plate of the receiving device. This spot is the center of the circle at the bottom, which has been transferred to this height plane. Adjust the width adjustment structure and mechanism to allow the actuator to be adjusted arbitrarily in the X and Y axes until the cursor pointer is aligned with the laser beam spot. Tighten fastener 5 to fix the actuator. At this point, the steel needle of the cursor pointer is the center of the circle.

[0058] In a preferred embodiment, the frame body includes two first frame bars 13 arranged symmetrically front to back and two second frame bars 12 arranged symmetrically left to right. The two parallel second frame bars 12 are vertically fixed between the two first frame bars 13, forming a central hollow. Four legs are fixed to the ends of the two first frame bars 13 respectively; the four corners of the transparent plastic plate 3 are fixed to the four ends of the two second frame bars 12.

[0059] Preferably, the first frame strip 13 includes a first horizontal plate and a second vertical plate that are fixed vertically. The first vertical plate is located on the top surface of the first horizontal plate, and the two first vertical plates are located on the outer layer of the two first horizontal plates. The two second frame strips 12 and the two top plates 11 abut against the two first vertical plates at both ends; this makes the appearance aesthetically pleasing and provides a mounting base for the second frame strips 12 and the two top plates 11.

[0060] The second frame strip 12 includes a second horizontal plate and a second vertical plate that are fixed vertically. The two ends of the second horizontal plate are attached to the two first horizontal plates, and the four corners of the transparent plastic plate 3 are fixed to the second horizontal plate.

[0061] The two ends of the second vertical plate are vertically fixed between the upper top plate 11 and the lower second horizontal plate. The second frame strip 12 and the top plate 11 can be a single piece, using a Z-shaped bent plate with a 90° bend. In addition, the receiving target frame 1 of this structure is mainly welded from shaped steel and angle steel.

[0062] In terms of manufacturing process, the laser plumb line cursor receiving target device eliminates complex processing procedures. Core components can be formed through conventional cutting, grinding, and printing. The target surface uses low-cost engineering plastics, and the support uses general-purpose angle steel profiles. The entire device can be mass-produced without specialized equipment, significantly lowering the barrier to entry. The improvement in operational efficiency is even more significant. Traditional methods for measuring the radius of cylindrical buildings take more than 40 minutes from equipment setup to data recording. With this device, a single person can complete the operation, and a single measurement takes no more than 10 minutes, increasing efficiency by over 80%. For tall and large chimneys, heat absorption towers, cooling towers, and various circular storage tanks, the center and radius of the building are checked after each section of construction. This efficiency advantage can significantly shorten the construction period and reduce labor input.

[0063] Preferably, a connecting plate is inherent between each end (front or rear end) of the two second frame strips 12 on the same side, and the two connecting plates and the two second frame strips 12 form a hollow, with the connecting plates attached to the first horizontal plate. That is, the two connecting plates and the two second frame strips 12 form a hollow in the middle, and can adopt an integral structure with a plate-like structure with a through hole in the center. This can strengthen the strength of the frame body.

[0064] In a preferred embodiment, the support leg is a 90° bent plate with the lines connecting the four sections lying on the same rectangle. A nut 6 is fixed to the inner side of the support leg, fitted over the top rod 2, and the top rod 2 is threadedly connected to the nut 6. The nut 6 serves to locally thicken the support leg, facilitating more precise adjustment of the top rod 2's position. Additionally, the support leg provides coarse positioning for the standard section; during design, the spacing between the support legs is close to that of the standard section, reducing the active length of the top rod 2. For example, the end of the top rod 2 furthest from the frame body is located outside the support leg, and this end has a manual tightening plate, allowing for hand tightening without other tools; the nut is welded to the receiving target frame 1.

[0065] In a preferred embodiment, the width of the actuator is no more than 60mm, which facilitates observation of the cursor pointer.

[0066] In a preferred embodiment, a cursor pointer 41 located above can be used. Specifically, a steel ruler is also included, the end of which can be fitted onto the cursor pointer 41 on the top surface of the actuator 4.

[0067] Specifically, the end of the steel ruler can be a loop made of rope. After the loop is placed on the cursor pointer 41 above, the steel ruler is straightened for measurement. The scale of the steel ruler can also be updated or modified based on the loop so that the end of the ruler is zero meters, which can be hung on the cursor pointer 41 to facilitate the measurement of the radius of the structure.

[0068] In a preferred embodiment, such as Figure 4 The transparent plastic sheet 3 shown is rectangular, and the central cutout of the main frame is also rectangular. This facilitates processing and manufacturing.

[0069] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser plumb line receiver target device for a standard section of an elevator, characterized in that, include: The receiving target frame (1), four opposing top rods (2), a width adjustment mechanism, a length adjustment mechanism, parallel transparent plastic plates (3), and a strip-shaped actuator (4). The receiving target frame (1) includes a frame body with a hollow center and four legs that are vertically fixed to the bottom surface of the frame body. The legs are located on the outside of the standard section. The four push rods (2) are threadedly connected to the four legs, and the two sides of the standard section are pushed between the four push rods (2); The transparent plastic plate (3) is set in the middle hollow and its width is greater than that of the actuator (4); The actuator (4) is located above the transparent plastic plate (3), and cursor pointers (41) are vertically fixed on both sides of the actuator (4). The top surface of the frame body is provided with two top plates (11) located outside the transparent plastic plate (3). The two top plates (11) are perpendicular to the actuator (4). The two ends of the length of the actuator (4) are connected to the two top plates (11). In the width and length directions of the actuator (4), the top plate (11) adjusts the position of the actuator (4) relative to the top plate (11) through the width adjustment mechanism and the length adjustment mechanism, respectively.

2. The laser plumb line receiving target device for a standard section of an elevator according to claim 1, characterized in that, The width adjustment mechanism includes two width strip holes (111) and two fasteners (5); The top plate (11) has a width strip hole (111) with a length perpendicular to the actuator (4). Fasteners (5) pass through each end of the length of the actuator (4) and the width strip hole (111). The position of the actuator (4) can be adjusted by adjusting the position of the fasteners (5) relative to the width strip hole (111). The length adjustment mechanism includes two length strip holes (42) opened at both ends of the actuator (4), the length of the length strip holes (42) being perpendicular to the width strip hole (111). The actuator (4), the length strip hole (42), and the width strip hole (111) are all threaded through the same fastener (5).

3. The laser plumb line receiving target device for a standard section of an elevator as described in claim 1, characterized in that, The main frame includes two first frame bars (13) arranged symmetrically front to back and two second frame bars (12) arranged symmetrically left to right. Two parallel second frame bars (12) are vertically fixed between two first frame bars (13), and the four legs are respectively fixed to the ends of the two first frame bars (13); The transparent plastic sheet (3) is fixed at the four corners to the four ends of the two second frame strips (12).

4. The laser plumb line receiving target device for a standard section of an elevator according to claim 3, characterized in that, The first frame strip (13) includes a first horizontal plate and a second vertical plate that are fixed vertically. The first vertical plate is located on the top surface of the first horizontal plate, and the two second frame strips (12) and the two top plates (11) abut against the two first vertical plates at both ends. The second frame strip (12) includes a second horizontal plate and a second vertical plate that are fixed vertically. The two ends of the second horizontal plate are attached to the two first horizontal plates, and the four corners of the transparent plastic plate (3) are fixed to the two second horizontal plates. The two ends of the second vertical plate are vertically fixed between the top plate (11) and the second horizontal plate.

5. The laser plumb line receiving target device for a standard section of an elevator according to claim 4, characterized in that, A connecting plate is fixed between the front end or the rear end of the two second frame strips (12), and the two connecting plates and the two second frame strips (12) form a hollow in the middle, and the connecting plate is attached to the first horizontal plate.

6. The laser plumb line receiving target device for a standard section of an elevator according to claim 1, characterized in that, The support leg has a 90° bent plate cross section and the line connecting the four cross sections is on the same rectangle; a nut (6) is fixed on the inner side of the support leg and sleeved on the top rod (2), and the top rod (2) is threadedly connected to the nut (6).

7. The laser plumb line receiving target device for a standard section of an elevator according to claim 1, characterized in that, The width of the actuator (4) is no more than 60 mm.

8. The laser plumb line receiving target device for a standard section of an elevator according to claim 7, characterized in that, It also includes a steel ruler, the end of which can be fitted onto the cursor pointer (41) on the top surface of the actuator (4).

9. The laser plumb line receiving target device for a standard section of an elevator according to claim 1, characterized in that, The transparent plastic sheet (3) is rectangular.

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