Line pendant equipment for building construction

By adopting a design that uses a belt pulley to drive synchronous rotation and a magnetic base to fix the plumb bob in the plumb bob equipment used in construction, the problem of plumb bob swaying is solved, and the measurement efficiency and equipment life are improved.

CN223769526UActive Publication Date: 2026-01-06HUBEI HONGRUN CONSTRUCTION DEVELOPMENT CO LTD
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Patent Information

Application Number
CN202520300002.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-25
Publication Date
2026-01-06
Estimated Expiration
2035-02-25

AI Technical Summary

Technical Problem

Existing plumb bob equipment used in construction suffers from wobbling of the plumb bob due to the reciprocating motion of the plumb line during the stringing process, which affects measurement efficiency and the lifespan of the equipment.

Method used

The second pulley works in conjunction with the first pulley to drive the slider and the take-up roller to rotate synchronously, ensuring that the lead line maintains a straight output during the release process. A magnetic base is used to fix the lead weight, avoiding wear caused by gravity shaking.

Benefits of technology

This enabled the smooth release of the plumb line, improving measurement efficiency and extending the lifespan of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of building construction equipment, and discloses line pendant equipment for building construction, which comprises a box body, cushion blocks are fixedly connected to four corners of the bottom end of the box body, a line outlet is fixedly connected to the bottom end of the box body, a magnetic attraction seat is fixedly connected to the bottom end of the line outlet, and a sliding block is connected to the inner wall of the rear end of the box body through a driving assembly. A fixing frame is fixedly connected to the front end of the sliding block, a winding roller is rotationally connected to the inner wall of the fixing frame, a falling line is wound around the outer wall of the winding roller, and baffles are fixedly connected to the left side and the right side of the outer wall of the winding roller. According to the utility model, under the action that the second belt pulley and the first belt pulley are matched with the belt, the fixed frame reciprocates along with the sliding block, and meanwhile, the winding roller on the inner wall of the fixed frame synchronously rotates to release the pendant wire, and the moving speed of the fixed frame is the same as that of the pendant wire on the surface of the winding roller; therefore, the plummet line can always keep linear output, shaking is avoided, and a worker can conveniently measure the plummet line.
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Description

Technical Field

[0001] This utility model relates to the field of construction equipment, and in particular to a plumb bob device for construction. Background Technology

[0002] A plumb bob is a commonly used tool for measuring verticality in construction engineering. It consists of a plumb line wound around a reel with a plumb bob fixed at the free end. When in use, the plumb line is released to allow the plumb bob to fall, and the worker visually observes the vertical deviation between the plumb line and the object to measure the verticality of the object being measured.

[0003] Due to the characteristic of the plumb line being wound and stored on the take-up spool, the plumb line will move back and forth on the surface of the take-up spool during winding to ensure that the wound coil is flat and that the line will not get stuck when unwinding. This causes the plumb line to swing due to its reciprocating motion when unwinding, and it is necessary to wait for the plumb line to settle before measurement can be performed, which is very inconvenient. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a plumb bob device for construction. Under the action of the belts of the second and first pulleys, the fixed frame moves back and forth with the slider, while the inner wall of the take-up roller rotates synchronously to release the plumb line. The moving speed of the fixed frame is the same as the moving speed of the plumb line on the surface of the take-up roller, so that the plumb line can always maintain a straight output to avoid shaking and facilitate workers to perform measurements.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A plumb bob device for construction includes a housing. Pads are fixedly connected to the four corners of the bottom of the housing. A wire outlet is fixedly connected to the bottom of the housing, and a magnetic base is fixedly connected to the bottom of the wire outlet. A slider is connected to the inner wall of the rear end of the housing via a drive assembly. A fixing frame is fixedly connected to the front end of the slider. A take-up roller is rotatably connected to the inner wall of the fixing frame. A plumb line is wound around the outer wall of the take-up roller. Baffles are fixedly connected to both the left and right sides of the outer wall of the take-up roller. Two limiting blocks are fixedly connected to the inner wall of the take-up roller. A rotating rod is rotatably connected to the inner wall of the left end of the housing, and a first pulley is fixedly connected to the outer wall of the rotating rod.

[0007] Furthermore, the drive assembly includes a drive motor fixedly connected to the inner wall of the rear end of the box, a reciprocating lead screw fixedly connected to the drive end of the drive motor, and two fixing blocks fixedly connected to the inner wall of the rear end of the box.

[0008] Furthermore, the left and right sides of the outer wall of the reciprocating screw are respectively rotatably connected to the inner walls of two fixed blocks, and the right end of the reciprocating screw is rotatably connected to the inner wall of the right end of the box.

[0009] Furthermore, the inner wall of the slider is threadedly connected to the outer wall of the reciprocating lead screw, and the rear end of the slider is slidably connected to the inner wall of the rear end of the box.

[0010] Furthermore, a second pulley is fixedly connected to the left side of the outer wall of the reciprocating screw, and the second pulley is connected to the first pulley through the inner side of the belt.

[0011] Furthermore, the outer walls of the rotating rod are provided with sliding grooves on both the upper and lower sides, and the outer walls of the limiting blocks are slidably connected to the inner walls of the sliding grooves.

[0012] Furthermore, a fixing block is fixedly connected to the inner wall of the front end of the box, and a pulley is fixedly connected to the rear end of the fixing block.

[0013] Furthermore, an iron cap is fixedly connected to the free end of the plumb line, and a lead weight is fixedly connected to the bottom end of the iron cap.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, under the action of the belt of the second pulley and the first pulley, the fixed frame moves back and forth with the slider, and the winding roller on its inner wall rotates synchronously to release the plumb line. The moving speed of the fixed frame is the same as the moving speed of the plumb line on the surface of the winding roller, so that the plumb line can always maintain a straight output to avoid shaking, which is convenient for workers to measure.

[0016] 2. In this utility model, the magnetic base can attract the iron cover after the lead wire is wound up, thereby fixing the lead wire on the magnetic base. This prevents the lead wire from being worn due to friction at the wire outlet caused by the lead wire shaking due to gravity when the device is placed, thus improving the service life of the device. Attached Figure Description

[0017] Figure 1 A perspective view of a plumb bob device for building construction proposed in this utility model;

[0018] Figure 2 This is a diagram of the housing in a plumb bob device for construction proposed in this utility model;

[0019] Figure 3 This is a cross-sectional view of the fixing frame in a plumb bob device for building construction proposed in this utility model.

[0020] Legend:

[0021] 1. Box body; 2. Pad block; 3. Cable outlet; 4. Magnetic base; 5. Plumb line; 6. Iron cover; 7. Plumb line; 8. Fixing block one; 9. Pulley; 10. Baffle; 11. Fixing frame; 12. First pulley; 13. Rotating rod; 14. Drive motor; 15. Second pulley; 16. Fixing block two; 17. Slider; 18. Reciprocating screw; 19. Take-up roller; 20. Limiting block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1-3 An embodiment of this utility model provides: a plumb bob device for construction, including a box body 1, with pads 2 fixedly connected to the four corners of the bottom of the box body 1, a wire outlet 3 fixedly connected to the bottom of the box body 1, a magnetic seat 4 fixedly connected to the bottom of the wire outlet 3, a fixing block 8 fixedly connected to the inner wall of the front end of the box body 1, a pulley 9 fixedly connected to the rear end of the fixing block 8, an iron cover 6 fixedly connected to the free end of the plumb line 5, and a lead weight 7 fixedly connected to the bottom of the iron cover 6;

[0024] Specifically, the magnetic base 4 at the bottom of the outlet 3 can attract the iron cover 6 after the lead 5 is wound up, thereby fixing the lead weight 7 on the magnetic base 4. This prevents the lead weight 7 from being worn by the lead 5 due to the friction caused by the weight of the lead 5 on the outlet 3 when the device is placed, thus improving the service life of the device.

[0025] A slider 17 is connected to the inner wall of the rear end of the box 1 via a drive assembly. The drive assembly includes a drive motor 14 fixedly connected to the inner wall of the rear end of the box 1. A reciprocating lead screw 18 is fixedly connected to the drive end of the drive motor 14. Two fixing blocks 16 are fixedly connected to the inner wall of the rear end of the box 1. The left and right sides of the outer wall of the reciprocating lead screw 18 are rotatably connected to the inner walls of the two fixing blocks 16, respectively. The right end of the reciprocating lead screw 18 is rotatably connected to the inner wall of the right end of the box 1. The inner wall of the slider 17 is threadedly connected to the outer wall of the reciprocating lead screw 18. The rear end of the slider 17 is slidably connected to the inner wall of the rear end of the box 1. A fixing bracket 1 is fixedly connected to the front end of the slider 17. 1. A take-up roller 19 is rotatably connected to the inner wall of the fixed frame 11. A plumb line 5 is wound around the outer wall of the take-up roller 19. Baffles 10 are fixedly connected to both the left and right sides of the outer wall of the take-up roller 19. Two limiting blocks 20 are fixedly connected to the inner wall of the take-up roller 19. A rotating rod 13 is rotatably connected to the inner wall of the left end of the box body 1. Slide grooves are opened on both the upper and lower sides of the outer wall of the rotating rod 13. The outer walls of the limiting blocks 20 are slidably connected to the inner walls of the slide grooves. A first pulley 12 is fixedly connected to the outer wall of the rotating rod 13. A second pulley 15 is fixedly connected to the left side of the outer wall of the reciprocating screw 18. The second pulley 15 and the first pulley 12 are connected through the inner side of the belt.

[0026] Specifically, the second pulley 15, in conjunction with the first pulley 12, enables the drive motor 14 to drive the reciprocating screw 18 to rotate. The rotating rod 13 then rotates along with the reciprocating screw 18, causing the slider 17 to reciprocate on the reciprocating screw 18. Simultaneously, the rotating rod 13 drives the take-up roller 19 to rotate, winding or releasing the weighted wire 5 wound on its surface. The limiting block 20 inside the take-up roller 19 slides in the groove on the outer wall of the rotating rod 13, ensuring that the take-up roller 19 can rotate with the rotating rod 13 and slide on the outer wall of the rotating rod 13 as it moves with the slider 17. During unwinding, the slider 17 can move according to the position change of the weighted wire 5 on the take-up roller 19, ensuring the weighted wire 5 is released smoothly without wobbling. After passing the pulley 9, the weighted wire 5 extends along the center of the outlet 3, avoiding friction and wear with the outlet 3.

[0027] Working principle: The drive motor 14 is started to drive the reciprocating screw 18 to rotate, causing the slider 17 to reciprocate on the reciprocating screw 18. At the same time, under the action of the belt of the second pulley 15 and the first pulley 12, the drive rod 13 follows the reciprocating screw 18 to rotate, thereby driving the take-up roller 19 to rotate. As the fixed frame 11 reciprocates with the slider 17, the take-up roller 19 on its inner wall rotates synchronously to release the plumb line 5. The moving speed of the fixed frame 11 is the same as the moving speed of the plumb line 5 on the surface of the take-up roller 19, so that the plumb line 5 can always maintain a straight output to avoid shaking. Then, the fixed block 8 changes the movement direction of the plumb line 5 and extends it out from the outlet 3, so that the lead weight 7 falls for measurement.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A line drop device for use in construction, characterized by, The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13).

2. A line drop device for use in construction according to claim 1, characterized in that: The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13).

3. A line clamp apparatus for use in construction according to claim 2, wherein: The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13).

4. A line drop device for use in construction according to claim 1, characterized in that: The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13).

5. A line drop device for use in construction according to claim 2, wherein: The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13).

6. A line clamp apparatus for use in construction according to claim 1, characterized in that: The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13).

7. A line clamp apparatus for use in construction according to claim 1, characterized in that: The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13).

8. A line clamp apparatus for use in construction according to claim 1, characterized in that: The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the fixed connection of the sliding block (17) in the rear end inner wall of box body (1) through drive assembly, the fixed connection of the fixed frame (11) in the front end of sliding block (17), the rotary connection of the winding roller (19) in the inner wall of fixed frame (11), the fixed connection of the falling line (5) around the outer wall of winding roller (19), the fixed connection of the baffle (10) in the left and right sides of outer wall of winding roller (19), the fixed connection of the two limit blocks (20) in the inner wall of winding roller (19), the rotary connection of the rotary lever (13) in the left end inner wall of box body (1), the fixed connection of the first belt pulley (12) in the outer wall of rotary lever (13). The utility model relates to a box body (1) is provided with the fixed connection of the cushion block (2) in the bottom end four corners, the fixed connection of the line outlet (3) in the bottom end of box body (1), the fixed connection of the magnetic seat (4) in the bottom end of line outlet (3), the