Line sinker device with stability

Abstract

The present invention relates to the field of measurement, and specifically to a stable plumb bob device. It comprises a traction rope and a lower cone, the upper portion of the connecting column is threadedly connected to the inner wall of the first connecting groove, the lower portion of the connecting column is threadedly connected to the inner wall of the second connecting groove, the upper cover and the connecting column are provided with first through holes of the same diameter along the axis, an inverted cone-shaped adjustment block is fitted in the adjustment groove, a conical fixed block is fitted in the fixed groove, the adjustment block and the fixed block are provided with second through holes of the same diameter along the axis, and a fixing piece for clamping the fixed block in the fixed groove is connected to the bottom end of the traction rope. The deadweight of the adjustment block and the friction generated with the adjustment groove have a damping effect on the movement of the adjustment block, and after the movement, the deadweight can be relied on to ensure that the adjustment block is concentric with the first through hole of the connecting column again, which can greatly shorten the swing time before the overall device stabilizes and reduces the amplitude of the swing. The device is easy to operate, quick to assemble and disassemble, reduces the stabilization time, improves the anti-disturbance ability, and improves the construction efficiency.

Description

Technical Field

[0001] The invention relates to the field of measurement, in particular to a stable plumb bob device. Background Art

[0002] The use of plumb bobs is ubiquitous in all construction fields and production and maintenance work, including civil construction, public buildings, and industrial engineering. Especially for the installation and maintenance of equipment with high precision requirements, there will be higher requirements for the accuracy and stability of the plumb bob. However, the plumb bob will continue to swing after being lowered, and it takes a long time before it stabilizes.

[0003] In order to solve the problem that the reciprocating swing of the line sinker body takes a long time, the existing 201920519060.2 discloses a stable line sinker, including a line sinker body and a traction rope. The line sinker body is conical, and the line sinker body includes a large end face. An energy-consuming hole is provided on the large end face of the line sinker body. The axis of the energy-consuming hole coincides with the axis of the line sinker body. One end of the traction rope is connected to the bottom of the energy-consuming hole. After the energy-consuming hole is provided, when the line sinker body swings back and forth around the connection point of the traction rope, the part of the traction rope above the connection point will collide with the side wall of the energy-consuming hole. The movements of the line sinker body and the traction rope will interfere with each other, and the potential energy on the original line sinker body will be quickly consumed, thereby The plumb line body can be stabilized faster; the ball head and the ball hole are provided so that the plumb line body can swing smoothly in all directions by relying on the cooperation of the ball head and the ball hole, thereby making it easy for the plumb line body to interfere with the movement of the traction rope, quickly consume potential energy, and quickly stabilize; however, in actual use, it can be seen that an energy-consuming hole is provided on the large end face of the plumb line body, and a ball head and a ball hole are provided at the bottom of the energy-consuming hole. Although this method reduces the swinging time to a certain extent compared with the traditional method, it causes a larger gap between the traction rope and the inner wall of the energy-consuming hole. When a collision occurs, the plumb line body will collide with the inner wall of the energy-consuming hole, which will cause unstable swinging, and there is still room for improvement in reducing the swinging time.

[0004] invention

[0005] The present invention aims to solve the above problems, thereby providing a stable line sinker device that reduces the swinging time.

[0006] The present invention solves the above problems by adopting the following technical solutions:

[0007] A stable line sinker device includes a traction rope and a lower cone, an upper cover and a connecting column, a first connecting groove is opened in the middle of the bottom surface of the upper cover, a second connecting groove corresponding to the first connecting groove is opened in the middle of the top surface of the lower cone, the inner walls of the first connecting groove and the second connecting groove are both provided with internal threads, an external thread is provided on the outer surface of the connecting column, the upper part of the connecting column is threadedly connected to the inner wall of the first connecting groove, the lower part of the connecting column is threadedly connected to the inner wall of the second connecting groove, the upper cover and the connecting column are relatively provided with first through holes of the same diameter along the axis, and the connecting column is provided with an internal thread. An inverted cone-shaped adjustment groove is provided around the top of the first through hole, and a conical fixing groove is provided around the connecting column and at the bottom of the first through hole. An inverted cone-shaped adjustment block is placed in the adjustment groove, and a conical fixing block is placed in the fixing groove. A second through hole of the same diameter is provided on the adjustment block and the fixed block relative to each other along the axis. The inner diameter of the second through hole is smaller than the diameter of the first through hole. The bottom end of the traction rope passes through the through holes on the upper cover, the adjustment block, the connecting column, and the fixed block in sequence. The bottom end of the traction rope is connected to a fixing piece that clamps the fixed block in the fixing groove.

[0008] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0009] Align the top of the traction line with the adopted center reference point and fix it firmly, then release the traction line to make it free, use the connecting column as the middle connecting structure and the fixing piece to clamp the fixed block at the bottom of the traction line in the fixing groove, so as to connect the whole device as one, the first through hole and the second through hole are concentric, and the lower cone naturally hangs down due to its own gravity to achieve centering and automatic centering. When the backward swing amplitude is large, since the inner diameter of the second through hole is smaller than the diameter of the first through hole, the traction line will drive the adjustment block to move along the inner wall of the adjustment groove, and the deadweight of the adjustment block and the friction generated with the adjustment groove will damp the movement of the adjustment block, and after moving, it can rely on its own weight to ensure that it is concentric with the first through hole of the connecting column again, which can greatly shorten the swing time before the whole device stabilizes, reduce the swing amplitude, accelerate stabilization, reduce operation time, and maintain stability through the conical fixing block and fixing groove at the bottom. The device is easy to operate and quick to disassemble and assemble, reduces stabilization time, improves anti-disturbance ability, and improves construction efficiency.

[0010] Preferably, a further technical solution of the present invention is:

[0011] The fixing member is a sphere, and the diameter of the sphere is larger than the diameter of the second through hole.

[0012] A limiting ring is provided at the middle portion of the outer circumference of the connecting column.

[0013] A control ring is provided on the outer peripheral surface of the upper cover and above the first connecting groove.

[0014] The interior of the lower cone is a solid structure.

[0015] The diameter of the traction rope is adapted to the diameter of the second through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of the upper cover in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the main cross-sectional structure of the upper cover in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the main structure of the connecting column in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the main cross-sectional structure of the connecting column in an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the main cross-sectional structure of the lower cone in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the main cross-sectional structure of the adjustment block in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the main cross-sectional structure of the fixing block in an embodiment of the present invention;

[0024] Marked in the figure are: traction rope 1, lower cone 2, upper cover 3, control ring 31, connecting column 4, adjustment groove 41, fixing groove 42, limit ring 43, first through hole 5, second through hole 6, adjustment block 7, fixing block 8, and fixing part 9. Implementation Method

[0025] The present invention will be further described below with reference to the embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0026] A stable line sinker device includes a traction rope 1, a lower cone 2, an upper cover 3, a control ring 31, a connecting column 4, an adjustment groove 41, a fixing groove 42, a limiting ring 43, a first through hole 5, a second through hole 6, an adjustment block 7, a fixing block 8 and a fixing member 9. The connecting column 4, the adjustment block 7 and the fixing block 8 are all made of low carbon steel. A first connecting groove is opened in the middle of the bottom surface of the upper cover 3, and a second connecting groove corresponding to the first connecting groove is opened in the middle of the top surface of the lower cone 2. The inner walls of the first connecting groove and the second connecting groove are both provided with internal threads. The outer surface of the connecting column 4 is provided with External thread, the upper part of the connecting column 4 is threadedly connected to the inner wall of the first connecting groove, and the lower part of the connecting column 4 is threadedly connected to the inner wall of the second connecting groove. The connecting column 4 connects the upper cover 3 and the lower cone 2 as a whole. The upper cover 3 and the connecting column 4 are relatively provided with a first through hole 5 of the same diameter along the vertical axis. The diameter of the first through hole 5 is 1.5mm. An inverted conical adjustment groove 41 is provided on the connecting column 4 and is located around the top of the first through hole 5. A conical fixing groove 42 is provided on the connecting column 4 and is located around the bottom of the first through hole 5. An inverted conical adjustment block 7 is placed in the adjustment groove 41. , a conical fixing block 8 is placed in the fixing groove 42, and a second through hole 6 of the same diameter is opened on the adjusting block 7 and the fixing block 8 along the axis. The inner diameter of the second through hole 6 is smaller than the diameter of the first through hole 5. The bottom end of the traction rope 1 passes through the upper cover 3, the adjusting block 7, the connecting column 4, and the through hole on the fixing block 8 in sequence. The bottom end of the traction rope 1 is connected to a fixing piece 9 that clamps the fixing block 8 in the fixing groove 42. The bottom end of the traction rope 1 and the fixing piece 9 are both located in the second connecting groove. The vertical axis of the upper cover 3, the adjusting block 7, the connecting column 4, the fixing block 8 and the lower cone 2 are located on the same straight line. The axes of the first through hole 5 and the second through hole 6 are located on the same straight line. The upper and lower ends of the adjusting block 7 and the fixed block 8 are both flat. The adjusting block 7 and the connecting column 4 are made of low-carbon steel with a maximum friction coefficient of 0.2. In order to ensure that the adjusting block 7 is not blocked by the friction force of the contact surface of the adjusting groove 41, the angle between the hypotenuse of the adjusting block 7 and the axis is ≤30°, so that the gravity component along the conical surface (cos60°G) can overcome the friction force (sin30°G*0.2). The angle between the hypotenuse of the fixed block 8 and the axis is ≤30°, which is convenient for quick alignment.

[0027] The fixing member 9 is a sphere, and the diameter of the sphere is larger than the diameter of the second through hole 6. The sphere can be formed by tying a knot at the bottom end of the traction line.

[0028] A limiting ring 43 is provided in the middle of the outer circumference of the connecting column 4, and the connecting column 4 is screwed to the second connecting groove. The limiting ring 43 stops rotating when it contacts the lower cone 2. It can be used for limiting, or you can hold the limiting ring 43 for operation, making the operation more convenient.

[0029] A control ring 31 is provided on the outer circumferential surface of the upper cover 3 and above the first connecting groove. The upper cover 3 is operated by holding the control ring 31 .

[0030] The interior of the lower cone 2 is a solid structure.

[0031] The diameter of the traction rope 1 is adapted to the diameter of the second through hole 6 , and both the diameter of the second through hole 6 and the diameter of the traction rope are 0.8 mm.

[0032] Align the top of the traction line with the adopted center reference point and fix it firmly, then release the traction line to make it free, use the connecting column 4 as the middle connecting structure, and the fixing piece 9 to clamp the fixing block 8 at the bottom end of the traction line in the fixing groove 42, so that the whole device is connected as one, the first through hole 5 and the second through hole 6 are concentric, and the lower cone 2 naturally hangs down due to its own gravity to achieve centering and automatic centering. When the backward swing amplitude is large, since the inner diameter of the second through hole 6 is smaller than the diameter of the first through hole 5, the traction line will drive the adjustment block 7 to move along the inner wall of the adjustment groove 41, and the deadweight of the adjustment block 7 and the friction generated with the adjustment groove 41 will damp the movement of the adjustment block 7, and after moving, it can rely on its own weight to ensure that it is concentric with the first through hole 5 of the connecting column 4 again, which can greatly shorten the swing time before the whole device stabilizes, reduce the swing amplitude, accelerate stabilization, and reduce operation time. It is kept stable by the bottom conical fixing block 8 and the fixing groove 42. The device is easy to operate, quick to disassemble and assemble, reduces stabilization time, improves anti-disturbance ability, and improves construction efficiency.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made using the contents of the present invention specification and its drawings are included in the scope of the present invention.

Claims

1. A stable line sinker device comprising a traction rope and a lower cone, characterized in that: The utility model further comprises an upper cover and a connecting column, wherein a first connecting groove is provided in the middle of the bottom surface of the upper cover, a second connecting groove corresponding to the first connecting groove is provided in the middle of the top surface of the lower cone, the inner walls of the first connecting groove and the second connecting groove are both provided with internal threads, an external thread is provided on the outer surface of the connecting column, the upper part of the connecting column is threadedly connected to the inner wall of the first connecting groove, and the lower part of the connecting column is threadedly connected to the inner wall of the second connecting groove, the upper cover and the connecting column are provided with first through holes of the same diameter relative to each other along the axis, an inverted conical adjustment groove is provided on the connecting column and around the top of the first through hole, and a conical fixing groove is provided on the connecting column and around the bottom of the first through hole The adjusting block is fitted in the adjusting groove, and the fixing block is fitted in the fixing groove. The adjusting block and the fixing block are provided with second through holes of the same diameter along the axis. The inner diameter of the second through hole is smaller than the diameter of the first through hole. The bottom end of the traction rope passes through the through holes on the upper cover, the adjusting block, the connecting column, and the fixing block in sequence. The bottom end of the traction rope is connected with a fixing piece that clamps the fixing block in the fixing groove. A limiting ring is provided in the middle of the outer circumference of the connecting column. The connecting column and the adjusting block are made of low carbon steel. The angle between the hypotenuse of the adjusting block and the axis is ≤30°, and the angle between the hypotenuse of the fixing block and the axis is ≤30°.

2. The stable plumb bob device according to claim 1, characterized in that: The fixing member is a sphere, and the diameter of the sphere is larger than the diameter of the second through hole.

3. The stable plumb bob device according to claim 1, characterized in that: A control ring is provided on the outer peripheral surface of the upper cover and above the first connecting groove.

4. The stable plumb bob device according to claim 1, characterized in that: The interior of the lower cone is a solid structure.

5. The stable plumb bob device according to claim 1, characterized in that: The diameter of the traction rope is adapted to the diameter of the second through hole.

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