Trapezoidal screw

Abstract

The utility model provides a trapezoidal screw, and belongs to the technical field of machinery. The problem that an existing trapezoidal screw is short in service life is solved. The trapezoidal screw rod comprises a rod body, an arc groove is formed in one side of the exterior of the rod body, notch grooves are formed in the top and the bottom of the exterior of the rod body, threads are formed in the exterior of the rod body, a connecting screw hole is formed in the other side of the rod body, and a flowing hole is formed in one side of the inner wall of the connecting screw hole. A plurality of liquid separation holes are formed in the top and the bottom of the inner wall of the flowing hole, and balls are embedded in the sides, away from the inner wall of the flowing hole, of the liquid separation holes. The utility model can prevent the thread from rusting, and has long service life.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a screw, particularly a trapezoidal screw. Background Technology

[0002] A trapezoidal screw is a mechanical transmission element suitable for applications with lower requirements for precision and speed, such as guide rods, lifting mechanisms, and clamping devices.

[0003] Trapezoidal screws are widely used in mechanical transmission. However, during use, lubricating oil cannot be added to the threaded connection and the surface of the screw. Over time, rust will appear at the threaded connection and on the surface of the screw, causing the trapezoidal screw to become unable to rotate due to corrosion and resulting in a short service life. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a trapezoidal screw with lubrication function.

[0005] The objective of this utility model can be achieved through the following technical solution: A trapezoidal screw includes a rod body, an arc groove is provided on one side of the outer surface of the rod body, notch grooves are provided at the top and bottom of the outer surface of the rod body, threaded teeth are provided on the outer surface of the rod body, a connecting screw hole is provided on the other side of the rod body, a flow hole is provided on one side of the inner wall of the connecting screw hole, a plurality of liquid distribution holes are provided at the top and bottom of the inner wall of the flow hole, and a ball is embedded on the side of the liquid distribution hole away from the inner wall of the flow hole.

[0006] This trapezoidal screw, through the connection of the screw hole, flow hole, distribution hole and ball bearings, allows for the removal of the T-shaped sealing plug. Lubricating oil is then added to the screw hole, flows into the flow hole, and is then evenly distributed in the distribution hole. Finally, it flows out from the gap between the ball bearings and the distribution hole, providing lubrication to the screw threads and preventing rust from forming, which would hinder the subsequent rotation of the trapezoidal screw.

[0007] In one of the trapezoidal screws described above, a T-shaped sealing plug is threaded onto the inner wall of the connecting screw hole. The T-shaped sealing plug seals the connecting screw hole.

[0008] In the trapezoidal screw described above, the distribution hole is located between two adjacent threads. The distribution hole facilitates the guidance of lubricating oil within the flow orifice.

[0009] In the aforementioned trapezoidal screw, the inner diameter of the connecting screw hole is larger than the inner diameter of the flow hole. The connecting screw hole facilitates the addition of lubricating oil and also allows for easy connection to other external components.

[0010] Compared with existing technologies, this trapezoidal screw, through the cooperation of connecting screw hole, flow hole, distribution hole and ball, removes the T-shaped sealing plug, lubricating oil is added into the connecting screw hole, then the lubricating oil flows into the flow hole, and then is evenly distributed in the distribution hole, and finally flows out from the gap between the ball and the distribution hole, which plays a lubricating role on the screw thread, avoids rust at the screw thread which would be detrimental to the subsequent rotation of the trapezoidal screw, and has a long service life. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of a partial structure of the rod body of this utility model.

[0013] Figure 3 This is a side sectional view of the rod body of this utility model.

[0014] Figure 4 This is a utility model Figure 1 A magnified view of A in the middle.

[0015] In the diagram: 1. Connecting screw hole; 2. Rod body; 3. Notch groove; 4. Thread; 5. Arc groove; 6. Flow hole; 7. Separating hole; 8. Ball bearing; 9. T-type sealing plug. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the trapezoidal screw includes a rod body 2. An arc groove 5 is provided on one side of the outer side of the rod body 2. Notch grooves 3 are provided at the top and bottom of the outer side of the rod body 2. Threads 4 are provided on the outer side of the rod body 2. A connecting screw hole 1 is provided on the other side of the rod body 2. A flow hole 6 is provided on one side of the inner wall of the connecting screw hole 1. Several liquid distribution holes 7 are provided at the top and bottom of the inner wall of the flow hole 6. A ball bearing 8 is embedded on the side of the liquid distribution hole 7 away from the inner wall of the flow hole 6.

[0018] To elaborate further, a T-shaped sealing plug 9 is threaded onto the inner wall of the connecting screw hole 1. The liquid distribution hole 7 is located between two adjacent screw threads 4. The inner diameter of the connecting screw hole 1 is larger than the inner diameter of the flow hole 6.

[0019] When using this utility model, remove the T-shaped sealing plug 9, add lubricating oil into the connecting screw hole 1, the lubricating oil flows into the flow hole 6, and then is evenly distributed in the distribution hole 7, and finally flows out from the gap between the ball 8 and the distribution hole 7, which lubricates the screw thread 4 and prevents rust from appearing at the screw thread 4, which is not conducive to the subsequent rotation of the trapezoidal screw.

[0020] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A trapezoidal screw, comprising a rod body (2), characterized in that: An arc groove (5) is provided on one side of the rod body (2). Notch grooves (3) are provided at the top and bottom of the rod body (2). Threads (4) are provided on the outside of the rod body (2). A connecting screw hole (1) is provided on the other side of the rod body (2). A flow hole (6) is provided on one side of the inner wall of the connecting screw hole (1). Several liquid distribution holes (7) are provided at the top and bottom of the inner wall of the flow hole (6). A ball bearing (8) is embedded on the side of the liquid distribution hole (7) away from the inner wall of the flow hole (6).

2. The trapezoidal screw according to claim 1, characterized in that: The inner wall of the connecting screw hole (1) is threaded with a T-type sealing plug (9).

3. A trapezoidal screw according to claim 1, characterized in that: The liquid distribution hole (7) is located between two adjacent threads (4).

4. A trapezoidal screw according to claim 1, characterized in that: The inner diameter of the connecting screw hole (1) is larger than the inner diameter of the flow hole (6).

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