一种扩管器的锁紧机构以及扩管器

Abstract

本技术方案属于扩管器技术领域，具体涉及一种扩管器的夹头机构以及扩管器，包括机座，其具有扩管腔；夹头，其活动置于所述扩管腔内；以及锁紧结构，其用于推动夹头在扩管腔内移动并将夹头锁定在扩管腔内；其中，所述锁紧结构包括：活动件，其中部铰接在所述机座上，且前端设置有抵压部；复位件，其用于使得所述抵压部始终具有远离扩管腔内夹头的趋势；以及手柄，其上端铰接在所述机座上，且上端边缘设置有推动部，该推动部活动抵接活动件的后端；其中，当所述夹头插入扩管腔后，转动所述手柄，在推动部的作用下，推动活动件后端移动，从而使得活动件的前端抵压扩管腔内的夹头，配合扩管腔内壁，实现锁定所述夹头。

Claims

1. A locking mechanism for a pipe expander, characterized by include: The base (1) has an expanded cavity (2); The chuck (3) is movable within the expansion cavity (2); as well as The locking structure (4) is used to push the chuck (3) to move within the expansion cavity (2) and lock the chuck (3) within the expansion cavity (2); The locking structure (4) includes: The movable part (5) is hinged to the base (1) in the middle and has a pressing part (51) at the front end; The reset member (6) is used to ensure that the pressing part (51) always tends to move away from the clamp (3) inside the expanding cavity (2); and The handle (7) is hinged at its upper end to the base (1) and has a pushing part at its upper edge, which moves to abut the rear end of the movable part (5); When the clamp (3) is inserted into the expansion cavity (2), the handle (7) is rotated, and the rear end of the movable part (5) is pushed to move under the action of the pushing part, so that the front end of the movable part (5) presses against the clamp (3) in the expansion cavity (2), and cooperates with the inner wall of the expansion cavity (2) to lock the clamp (3).

2. A locking mechanism for a pipe expander as defined in claim 1, wherein: The pushing part has an abutting surface (8), which includes a recess (9), a protrusion (10) and a locking part (11) connected in sequence. The distances of the recess (9), the protrusion (10) and the locking part (11) from the hinge point of the handle (7) on the base (1) increase in sequence. During the clamping process of the chuck (3), the lower end of the movable part (5) abuts against the recess (9), the protrusion (10) and the locking part (11) in sequence; When the chuck (3) is locked, the lower end of the movable part (5) is placed inside the locking part (11).

3. A locking mechanism for an expander as claimed in claim 2, wherein: The base (1) is provided with a movable pin (12), and the middle part of the movable part (5) is hinged to the base (1) by the movable pin (12).

4. A locking mechanism for a pipe expander as defined in claim 3, wherein: The lower end of the movable part (5) is provided with a mounting groove (13), and an abutment wheel (14) is rotatably arranged in the mounting groove (13); The abutting wheel (14) abuts against the abutting surface (8) of the handle (7).

5. A locking mechanism for a pipe expander as defined in claim 4, wherein: The reset member (6) is configured as a torsion spring (15), which is sleeved on the movable pin (12) and has its two ends connected to the base (1) and the movable member (5) respectively.

6. A locking mechanism for a pipe expander as defined in claim 5, wherein: The clamp (3) includes a left clamp (16) and a right clamp (17), with one end of the left clamp (16) and the right clamp (17) hinged together and the other end connected by a pin (18). The upper end of the movable part (5) is provided with a protrusion, which movably abuts against the pin (18).

7. A locking mechanism for a pipe expander according to claim 6, wherein: The expansion cavity (2) is provided with several positioning pins (19), and the side wall of the clamp (3) is provided with positioning grooves (20) adapted to the positioning pins (19); When the chuck (3) is placed in the set position, the positioning pin (19) is placed in the positioning groove (20).

8. A locking mechanism for a pipe expander according to claim 7, wherein: A spring piece (21) is provided inside the expansion cavity (2). One end of the spring piece (21) is fixed on the machine base (1), and the other end abuts against one side of the chuck (3), so that the chuck (3) always tends to be clamped when in use.

9. A pipe expander characterized by include: Shell (22); An expanding mechanism (23) is arranged in the housing (22) and comprises an expanding cone (24); And The locking mechanism according to any one of claims 1-8; Wherein the machine base (1) is arranged on the housing (22), and the expanding cone (24) is movably arranged in the expanding cavity (2).

Images