Pendant for engineering surveying

Abstract

The utility model relates to the technical field of engineering surveying equipment, and discloses a line pendant for engineering surveying, which comprises a line pendant body, an accommodating cavity is arranged in the line pendant body, a line roller capable of automatically winding a lifting rope is arranged in the accommodating cavity, and a positioning piece for positioning the line roller is arranged on the line pendant body. The top of the plumb bob body is provided with a line hole for the lifting rope to penetrate through. According to the utility model, the lifting rope can be accommodated in the plumb bob body, so that the occupied external space can be reduced, the carrying convenience can be improved, and the phenomenon that the lifting rope is wound when being arranged outside the plumb bob body can be avoided; the structure is simple, operation and use are convenient, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of engineering surveying equipment technology, and in particular to a plumb bob for engineering surveying. Background Art

[0002] Plumb bobs are commonly used for verticality measurement. Due to their simple structure and ease of operation, they are widely used in construction, mining, and related fields. Existing plumb bobs typically have the measuring rope suspended from the top, with excess rope located on the winding reel or directly wound around the take-up roller. This requires carrying both the plumb bob and the roller simultaneously, which is inconvenient. Improper storage easily leads to rope tangling, requiring significant time and effort to untangle the rope during use. Therefore, there is an urgent need for a plumb bob for engineering surveying that can retract the rope, reduce its footprint, and prevent tangling. Utility Model Content

[0003] The purpose of this utility model is to provide a plumb bob for engineering measurement that can store the suspension rope inside the plumb bob body, which can reduce the occupation of external space, improve the convenience of carrying, and avoid the phenomenon of the suspension rope being tangled when placed outside the plumb bob body; it has a simple structure, is easy to operate and use, and is highly practical.

[0004] The present invention adopts the following technical solution:

[0005] A plumb bob for engineering surveying includes a plumb bob body with an internal cavity. A wire roller for automatically winding a suspension rope is disposed within the cavity. A positioning element for positioning the wire roller is disposed on the plumb bob body. A wire hole for the suspension rope to pass through is disposed at the top of the plumb bob body.

[0006] Preferably, a spring is provided inside the roller, and rotating rods are provided on both sides of the roller, with the rotating rods rotatably disposed within the accommodating cavity.

[0007] Preferably, the positioning component includes a positioning rod elastically disposed on the bobbin body, one end of the positioning rod being movably inserted into the hollow rotating rod, and a positioning disk being disposed at one end of the positioning rod located inside the rotating rod; a positioning ring is coaxially disposed on the inner wall of the rotating rod, the positioning ring being located on the side of the positioning disk away from the bobbin, and the end face of the positioning ring that contacts the positioning disk being provided with mutually meshing positioning teeth.

[0008] Preferably, the end of the positioning rod away from the rotating rod is provided with an operating part that protrudes from the side of the plumb bob body.

[0009] Preferably, the operating part has a spherical structure, and a rubber pressing sleeve is provided on the plumb bob body outside the operating part.

[0010] Preferably, a limiting part is movably provided on the plumb bob body above the accommodating cavity, and the suspension rope is connected to the bottom of the limiting part.

[0011] Preferably, a level bubble is provided at the top of the limiting part.

[0012] Preferably, the top of the plumb bob body is detachably provided with an end cap, and the limiting part is movably disposed on the end cap.

[0013] Preferably, a limiting ring is provided in the middle of the end cap, and the opening in the middle of the limiting ring matches the diameter of the lifting rope.

[0014] Preferably, a mounting cavity is provided through the plumb bob body below the accommodating cavity, a laser pointer is provided inside the mounting cavity, and a switch for controlling the laser pointer is provided on the outside of the plumb bob body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: By opening a receiving cavity inside the plumb bob body, this utility model can provide installation space for the wire roller, integrating the wire roller onto the plumb bob body. This reduces the occupation of external space, improves the convenience of carrying, and avoids the situation of the lifting rope getting tangled when the wire roller is placed outside the plumb bob body. It can also ensure the orderly storage of the lifting rope and improve the convenience of use. The setting of the positioning component can flexibly adjust the extension length of the lifting rope according to the usage requirements, meet different usage conditions, and enhance the practicality of this utility model. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0017] Figure 2 This is a partial cross-sectional view of an embodiment of this application;

[0018] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0019] Figure 4 This is a schematic diagram of the limiting part of this application. DETAILED DESCRIPTION

[0020] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0021] like Figures 1 to 4As shown, the plumb bob for engineering measurement according to this utility model includes a plumb bob body 1, and a receiving cavity 2 is provided inside the plumb bob body 1. The receiving cavity 2 is preferably located in the upper part of the plumb bob body 1. A wire roller 4 that can automatically wind the suspension rope 3 is provided in the receiving cavity 2. A positioning component is provided on the plumb bob body 1 to position the wire roller 4. By positioning the wire roller 4 with the positioning component, the length of the suspension rope 3 can be flexibly adjusted, thereby meeting different working conditions. A wire hole is provided at the top of the plumb bob body 1 for the suspension rope 3 to pass through.

[0022] Furthermore, a spring is installed inside the roller 4 to automatically wind the suspension rope 3, similar to the winding principle of a measuring tape. Rotating rods 5 are installed on both sides of the roller 4, rotatably positioned within the accommodating cavity 2. One rotating rod 5 is hollow, and a positioning element is movably inserted from the outside of the plumb bob body 1 into the hollow rotating rod 5. In the initial state, the positioning element limits the rotating rod 5, and the roller 4 is in a stable state. Specifically, the positioning element includes an adjustment hole 6 on the plumb bob body 1, with a positioning rod 7 elastically installed inside the adjustment hole 6 via a spring. One end of the positioning rod 7 movably inserts into the hollow rotating rod 5, and a positioning disc 8 is installed at its end. A positioning ring 9 is installed on the inner wall of the rotating rod 5, located on the side of the positioning disc 8 away from the roller 4. The end face of the positioning ring 9 that contacts the positioning disc 8 has meshing positioning teeth. In the initial state, the positioning disc 8 and the positioning ring 9 are engaged, and the roller 4 is in a positioned state. When the length of the suspension rope 3 needs to be adjusted, press the positioning rod 7. The positioning rod 7 will move towards the wire roller 4 along the axis of the rotating rod 5. At this time, the positioning disc 8 and the positioning ring 9 will disengage, and the positioning operation of the wire roller 4 will be released.

[0023] Preferably, the end of the positioning rod 7 away from the rotating rod 5 is provided with an operating part 10 protruding from the side of the plumb bob body 1, so that pressing the operating part 10 can move the positioning rod 7 along the axis of the rotating rod 5, thereby separating the positioning disc 8 from the positioning ring 9. The operating part 10 has a spherical structure for easy pressing by hand. A rubber pressing sleeve 11 is provided on the plumb bob body 1 outside the operating part 10. The rubber pressing sleeve 11 can seal the adjustment hole 6 through which the positioning rod 7 passes, preventing dust from entering the adjustment hole 6 and increasing the wear between the positioning rod 7 and the plumb bob body 1 during use.

[0024] Furthermore, a limiting part 12 is movably provided on the plumb bob body 1 above the receiving cavity 2. The suspension rope 3 is connected to the bottom of the limiting part 12. The limiting part 12 not only limits the suspension rope 3 to prevent it from entering the receiving cavity 2, but also facilitates the pulling of the suspension rope 3 during use. The limiting part 12 includes upper and lower parts. The upper part is a cylindrical structure, and the lower part is a conical structure. The plumb bob body 1 is provided with a conical hole 13 that matches the lower conical structure. The lower conical structure of the limiting part 12 is preferably made of rubber to facilitate the installation of the limiting part 12 in the conical hole 13. In addition, a spirit level 14 is provided at the top of the limiting part 12 to provide a reference for its horizontal placement and further improve the accuracy of the measurement. A fixing hole 15 is also provided through the upper part of the limiting part 12 for passing through a fixing rod to fix the limiting part 12 in a designated position.

[0025] In addition, an end cap 16 is detachably provided on the top of the plumb bob body 1. The end cap 16 is preferably detachably connected to the plumb bob body 1 by bolts to facilitate the inspection and replacement of the wire roller 4. A limiting part 12 is movably provided on the end cap 16. A limiting ring 17 is provided in the middle of the end cap 16. The limiting ring 17 is fixedly connected to the bottom side wall of the end cap 16 by a connecting rod. The opening in the middle of the limiting ring 17 matches the diameter of the suspension rope 3 to limit the suspension rope 3 and ensure that the suspension rope 3 passes through the plumb bob body 1 in a centered position.

[0026] Furthermore, a mounting cavity 18 is formed through the plumb bob body 1 below the receiving cavity 2. A laser pointer 19 is installed inside the mounting cavity 18, and the laser pointer 19 is coaxially arranged with the plumb bob body 1. A switch for controlling the laser pointer 19 is provided on the outside of the plumb bob body 1. The laser pointer 19 can provide a reference for the position of the plumb bob in dark environments by emitting light, thus enhancing the practicality of this invention.

[0027] In use, first press the rubber pressing sleeve 11 to move the positioning rod 7 along the axis of the rotating rod 5, releasing the limit on the wire roller 4. Then, pull the limiting part 12 to pull the suspension rope 3 out of the wire roller 4. In dark working conditions, the laser pointer 19 can be turned on. The light emitted by the laser pointer 19 passes through the bottom of the plumb bob body 1 and acts on the bottom reference surface, providing a reference for the position of the plumb bob. After use, press the rubber pressing sleeve 11 again, and the spring will drive the wire roller 4 to rotate, completing the winding of the suspension rope 3. This invention reduces the occupation of external space, improves the convenience of carrying the plumb bob, and avoids the situation where the suspension rope 3 is tangled when the wire roller 4 is placed outside the plumb bob body 1. It can ensure the orderly storage of the suspension rope 3 and improve the convenience of use.

Claims

1. A plumb bob for engineering surveying, characterized in that: The device includes a plumb bob body, which has an internal cavity containing a wire roller for automatically winding a suspension rope. The plumb bob body also has a positioning element for positioning the wire roller. The top of the plumb bob body has a wire hole for the suspension rope to pass through.

2. The plumb bob for engineering surveying according to claim 1, characterized in that: The roller is equipped with a spring, and rotating rods are provided on both sides of the roller, with the rotating rods rotatably disposed within the accommodating cavity.

3. The plumb bob for engineering surveying according to claim 2, characterized in that: The positioning component includes a positioning rod elastically disposed on the bobbin body, one end of which is movably inserted into the hollow rotating rod, and a positioning disk is disposed at one end of the positioning rod located inside the rotating rod; a positioning ring is coaxially disposed on the inner wall of the rotating rod, the positioning ring is located on the side of the positioning disk away from the bobbin, and the end face of the positioning ring that contacts the positioning disk is provided with mutually meshing positioning teeth.

4. The plumb bob for engineering surveying according to claim 3, characterized in that: The positioning rod has an operating part protruding from the side of the plumb bob body at the end away from the rotating rod.

5. The plumb bob for engineering surveying according to claim 4, characterized in that: The operating part has a spherical structure, and a rubber pressing sleeve is provided on the plumb bob body outside the operating part.

6. The plumb bob for engineering surveying according to claim 1, characterized in that: A limiting part is movably provided on the plumb bob body above the accommodating cavity, and the suspension rope is connected to the bottom of the limiting part.

7. The plumb bob for engineering surveying according to claim 6, characterized in that: A level bubble is provided at the top of the limiting part.

8. The plumb bob for engineering surveying according to claim 7, characterized in that: The top of the plumb bob body is detachably provided with an end cap, and the limiting part is movably disposed on the end cap.

9. The plumb bob for engineering surveying according to claim 8, characterized in that: The end cap is provided with a limiting ring in the middle, and the opening in the middle of the limiting ring matches the diameter of the lifting rope.

10. The plumb bob for engineering surveying according to claim 1, characterized in that: A mounting cavity is provided through the plumb bob body below the accommodating cavity. A laser pointer is installed inside the mounting cavity, and a switch for controlling the laser pointer is provided on the outside of the plumb bob body.

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