Dredging spring adapter

Abstract

The utility model discloses a dredging spring adapter joint which comprises a spring connecting column and a connecting cap, threaded protrusions are spirally and annularly arranged on the peripheral face of the spring connecting column, the interval space between the threaded protrusions is matched with the thread pitch and the diameter of a spring, the diameter of the connecting cap is larger than that of the spring connecting column, and the diameter of the connecting cap is larger than that of the spring connecting column. An annular skirt edge is arranged at one end of the connecting cap and surrounds the periphery of one end of the spring connecting column, first screw joint holes are symmetrically formed in the two sides of the annular skirt edge, a second screw joint hole is formed in the spring connecting column, and the second screw joint hole and the two first screw joint holes are the same in aperture and are located on the same straight line. And two limiting screws with the same length are in threaded connection with the interiors of the two first threaded connection holes correspondingly, the limiting screws are detachably connected with the second threaded connection holes, double limiting and fixing are completed through the spring, the spring cannot be loosened even if vibration is generated in the use process, and the installation stability of the spring is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of adapter, specifically relates to a dredging spring adapter. BACKGROUND

[0002] In actual dredging scene, the device such as pipeline dredging machine often produces violent vibration, and the conventional thread connection or simple sleeve structure is adopted for most existing dredging spring and adapter, the conventional thread is prone to axial loosening under high-frequency vibration, leading to the disconnection of spring and adapter, and although the sleeve structure is convenient to install, it lacks effective limiting and is difficult to bear the alternating stress generated by frequent extension and torsion of spring during dredging operation, especially when dealing with stubborn blockage, the connection failure problem of spring and adapter is more prominent. CONTENT

[0003] The utility model aims at the above problems, provides a dredging spring adapter, solves the problems such as poor connection stability of existing spring and adapter.

[0004] The utility model is a kind of dredging spring adapter, which is realized by the following technical solutions, including cylindrical spring connecting column and the connecting cap located at one end of spring connecting column, the outer circumferential surface of spring connecting column is spirally ringed with thread-shaped protrusions, the interval space between thread-shaped protrusions is adapted to the pitch and diameter of spring, the diameter of connecting cap is greater than the diameter of spring connecting column, the end of connecting cap close to spring connecting column is provided with annular skirt, the annular skirt is wrapped around the outer circumferential of one end of spring connecting column, and there is accommodating gap between the inner wall of annular skirt and the outer wall of spring connecting column, the length of accommodating gap is greater than the height of thread-shaped protrusion, the first screw hole is symmetrically arranged on both sides of annular skirt, the second screw hole is arranged on spring connecting column, the hole diameter of second screw hole and two first screw holes is same and located on the same straight line, two limit screws of equal length are respectively screwed in two first screw holes, and the limit screw is detachably connected with second screw hole.

[0005] Further, the edge of thread-shaped protrusion is sharp pointed end.

[0006] Further, the two side edges of thread-shaped protrusion located at sharp pointed end are concave arc.

[0007] Further, the edge of one end of limit screw for inserting first screw hole is ringed with guide bevel.

[0008] Further, the end of connecting cap away from spring connecting column is provided with T-shaped groove or T-shaped plug connector, and the shape and size of T-shaped groove and T-shaped plug connector are adapted.

[0009] Before connecting and fixing the spring and the adapter, the two limiting screws are removed. Then, the spring is inserted from the end of the spring connecting post that is far away from the connecting cap. The spring and the spring connecting post are rotated in opposite directions so that the spring is screwed onto the outer circumference of the spring connecting post along the threaded protrusion. Subsequently, one end of the spring enters the receiving gap between the annular skirt and the spring connecting post until one end of the spring abuts against the connecting cap and stops rotating. At this time, the two limiting screws are respectively inserted into the two first screw holes on the annular skirt. As the limiting screws continue to rotate, they enter the gap of the spring and then enter the second screw hole to complete the fixation. Thus, the spring completes double limiting fixation. Even if vibration occurs during use, the spring will not loosen, and the installation stability of the spring is further improved. Attached Figure Description

[0010] Figure 1 This is the front view of this utility model;

[0011] Figure 2 yes Figure 1 Schematic diagram of the cross section at point AA.

[0012] The attached figures are labeled as follows:

[0013] 1. Spring connecting post; 11. Threaded protrusion; 12. Second screw hole; 2. Connecting cap; 21. Annular skirt; 22. First screw hole; 3. Limit screw; 31. Guide bevel. Detailed Implementation

[0014] The present invention will be further illustrated below with reference to specific examples and accompanying drawings.

[0015] like Figures 1-2 As shown, this utility model describes a drain cleaning spring adapter, including a cylindrical spring connecting post 1 and a connecting cap 2 located at one end of the spring connecting post 1. The outer circumference of the spring connecting post 1 is spirally provided with threaded protrusions 11. The spacing between the threaded protrusions 11 is adapted to the pitch and diameter of the spring. The diameter of the connecting cap 2 is larger than the diameter of the spring connecting post 1. The end of the connecting cap 2 near the spring connecting post 1 is provided with an annular skirt 21, which surrounds the outer circumference of one end of the spring connecting post 1. Furthermore, there is a receiving gap between the inner wall of the annular skirt 21 and the outer wall of the spring connecting post 1. The length of the receiving gap is greater than the height of the threaded protrusion 11. The annular skirt 21 has symmetrical first screw holes 22 on both sides. The spring connecting post 1 has a second screw hole 12. The second screw hole 12 and the two first screw holes 22 have the same diameter and are located on the same straight line. Two equal-length limiting screws 3 are screwed into the two first screw holes 22 respectively. The limiting screws 3 are detachably connected to the second screw holes 12.

[0016] Before connecting and fixing the spring and the adapter, remove the two limiting screws 3. Then, insert the spring from the end of the spring connecting post 1 that is relatively far from the connecting cap 2. Rotate the spring and the spring connecting post 1 in opposite directions so that the spring is screwed onto the outer circumference of the spring connecting post 1 along the threaded protrusion 11. Then, one end of the spring enters the receiving gap between the annular skirt 21 and the spring connecting post 1 until one end of the spring abuts against the connecting cap 2 and stops rotating. At this time, insert the two limiting screws 3 into the two first screw holes 22 on the annular skirt 21 respectively. As the limiting screws 3 continue to rotate, they enter the gap of the spring and then enter the second screw hole 12 to complete the fixation. Thus, the spring completes double limiting fixation. Even if vibration occurs during use, the spring will not loosen. The installation stability of the spring is further improved.

[0017] In this embodiment of the invention, the edge of the threaded protrusion 11 has an acute angle tip. Compared with the traditional rounded or right-angled edges, the acute angle tip can effectively reduce the contact area between the spring and the threaded protrusion 11, thereby reducing friction and making the spring screwing operation easier and more convenient, greatly improving installation efficiency. After the spring is screwed in, the acute angle tip can be embedded more deeply into the gap of the spring, which to a certain extent restricts the radial movement of the spring and improves the stability of the connection.

[0018] Furthermore, in this embodiment of the invention, the threaded protrusion 11 is located on both sides of the acute angle tip in an inwardly concave arc shape, so that when the threaded protrusion 11 contacts the helical coil of the spring, it can better fit the contour of the spring, increase the contact area, and thus further improve the tightness and stability of the connection.

[0019] In this embodiment of the present invention, the limiting screw 3 is provided with a guide bevel 31 on one end edge for inserting into the first screw hole 22. When the limiting screw 3 is screwed into the first screw hole 22 and abuts against the spring surface, under the guidance of the guide bevel 31, the end of the limiting screw 3 can smoothly slide into the gap of the spring. Thus, as the limiting screw 3 is further screwed in, it can be inserted into the gap of the spring until it is screwed into the second screw hole 12. By setting the guide bevel 31, jamming can be avoided and installation efficiency can be improved.

[0020] In this embodiment of the present invention, the end of the connecting cap 2 away from the spring connecting post 1 is provided with a T-shaped groove or a T-shaped plug. The T-shaped groove and the T-shaped plug are adapted to each other in shape and size. The T-shaped groove on the connecting cap 2 is the female adapter, and the T-shaped plug on the connecting cap 2 is the male adapter. When connecting two springs, the female adapter and the male adapter are fixed at both ends of the two springs respectively, and then the T-shaped plug of the male adapter is inserted into the T-shaped groove of the female adapter for fixation, thus completing the connection of the two springs.

[0021] The above embodiments are merely preferred embodiments of the present utility model and are only used to explain the present utility model, not to limit the present utility model. Any changes, substitutions, combinations, simplifications, modifications, etc., made by those skilled in the art without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A drain cleaning spring adapter, characterized in that: The device includes a cylindrical spring connecting post (1) and a connecting cap (2) located at one end of the spring connecting post (1). The outer circumference of the spring connecting post (1) is provided with a spiral ring of threaded protrusions (11). The spacing between the threaded protrusions (11) is adapted to the pitch and diameter of the spring. The diameter of the connecting cap (2) is larger than the diameter of the spring connecting post (1). The end of the connecting cap (2) near the spring connecting post (1) is provided with an annular skirt (21). The annular skirt (21) surrounds the outer circumference of one end of the spring connecting post (1), and the inner edge of the annular skirt (21)... There is a receiving gap between the wall and the outer wall of the spring connecting column (1). The length of the receiving gap is greater than the height of the threaded protrusion (11). The two sides of the annular skirt (21) are symmetrically provided with first screw holes (22). The spring connecting column (1) is provided with second screw holes (12). The second screw hole (12) and the two first screw holes (22) have the same diameter and are located on the same straight line. Two equal-length limiting screws (3) are screwed into the two first screw holes (22). The limiting screws (3) are detachably connected to the second screw holes (12).

2. The unblocking spring adapter according to claim 1, characterized in that: The edge of the threaded protrusion (11) has an acute angle tip.

3. A drain cleaning spring adapter according to claim 2, characterized in that: The threaded protrusion (11) is located on both sides of the acute angle tip in an inwardly concave arc shape.

4. The unblocking spring adapter according to claim 1, characterized in that: The limiting screw (3) is provided with a guide bevel (31) on one end edge for insertion into the first screw hole (22).

5. A drain cleaning spring adapter according to claim 1, characterized in that: The end of the connecting cap (2) away from the spring connecting post (1) is provided with a T-shaped groove or a T-shaped plug, the T-shaped groove and the T-shaped plug being adapted to each other in shape and size.

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