阅读说明：本技术 一种旋转轴轴向往复摆动时防护机构 (Protection mechanism during axial reciprocating swing of rotating shaft ) 是由 余永 池申 陈�峰 于 2019-10-20 设计创作，主要内容包括：本发明公开了一种旋转轴轴向往复摆动时防护机构,两转动臂固定于限位轴上,两限位臂分别置于一转动臂的一侧并转动连接于限位轴,限位面处于转动臂上的转动面绕限位轴轴线转动的转动路径上,滑台处于两限位臂之间,两滑块平行设置,且通过滑移固定于滑台的沿滑移方向的不同位置上,两连接块分别与一限位臂滑动连接并与对应侧的滑块铰接；处于不同位置上的两滑块分别通过对应连接块和限位臂的传动使限位臂上的限位面处于转动面转动时的不同周向位置上。本发明中限位臂的位置调节是通过滑动位移的方式来实现,通过直线与转动的运动变换来实现,调节范围广,使用灵活。(The invention discloses a protection mechanism for a rotating shaft during axial reciprocating swing.A two rotating arms are fixed on a limiting shaft, the two limiting arms are respectively arranged on one side of the rotating arm and are rotationally connected with the limiting shaft, a limiting surface is positioned on a rotating path of the rotating surface on the rotating arm rotating around the axis of the limiting shaft, a sliding table is positioned between the two limiting arms, two sliding blocks are arranged in parallel and are fixed on different positions of the sliding table along the sliding direction through sliding, and two connecting blocks are respectively connected with the limiting arm in a sliding manner and are hinged with the sliding blocks on the corresponding side; the two sliding blocks at different positions respectively enable the limiting surfaces on the limiting arms to be at different circumferential positions when the rotating surface rotates through the transmission of the corresponding connecting blocks and the limiting arms. The position adjustment of the limiting arm is realized in a sliding displacement mode, and is realized through the motion conversion of straight line and rotation, so that the adjusting range is wide, and the use is flexible.)

1. The utility model provides a protection machanism when rotation axis axial reciprocating swing which characterized in that: comprises a limiting shaft (31), a sliding block (34), a sliding table (35), a connecting block (36), a rotating arm (32) provided with a rotating surface (321) and a limiting arm (33) provided with a limiting surface (331), wherein the rotating arm (32) is fixed on the limiting shaft (31), the two limiting arms (33) are respectively arranged on one side of the rotating arm (32) and are rotatably connected with the limiting shaft (31), the limiting surface (331) is positioned on a rotating path of the rotating surface (321) on the rotating arm (32) rotating around the axis of the limiting shaft (31), the sliding table (35) is horizontally arranged below the limiting shaft (31) and between the two limiting arms (33), and the two sliding blocks (34) are arranged in parallel, the two connecting blocks (36) are fixed on different positions of the sliding table (35) along the sliding direction in a sliding manner, are respectively connected with a limiting arm (33) in a sliding manner and are hinged with the sliding blocks (34) on the corresponding sides; the two sliding blocks (34) at different positions respectively enable the limiting surface (331) on the limiting arm (33) to be at different circumferential positions when the rotating surface (321) rotates through the transmission of the corresponding connecting block (36) and the limiting arm (33).

2. The shielding mechanism for preventing axial reciprocation of a rotatable shaft as claimed in claim 1, wherein: be equipped with two track (351) that are parallel to each other on slip table (35), and the axis mutually perpendicular of track (351) and spacing axle (31), two slider (34) correspond sliding connection on two track (351), and slider (34) are fixed in on the different positions of track (351) through sliding.

3. The shielding mechanism for preventing axial reciprocation of a rotatable shaft as claimed in claim 2, wherein: the locking block (343) is inserted into the sliding block (34), the locking block (343) is connected to the track (351) in a sliding mode, the sliding block (34) is connected with a locking screw (344) in a threaded mode, the locking screw (344) penetrates through the sliding block (34) and abuts against the locking block (343), and the locking block (343) abuts against the track (351).

4. The shielding mechanism for preventing axial reciprocation of a rotatable shaft as claimed in claim 1, wherein: the rotating arm (32) is of a circular block structure, a rectangular lug (320) is arranged on the outer circumferential wall of the rotating arm (32), and a rotating surface (321) is formed on one side end surface of the lug (320).

5. The shielding mechanism for preventing axial reciprocation of a rotatable shaft as claimed in claim 4, wherein: spacing arm (33) are the strip shaped plate structure, are equipped with stopper (330) of perpendicular to spacing arm (33) on spacing arm (33), and stopper (330) are rectangle column structure, on stopper (330) with in lug (320) the side that the rotating surface (321) is relative is spacing face (331).

The technical field is as follows:

the invention relates to a protection mechanism for a rotating shaft during axial reciprocating swing.

Background art:

when the mechanical reciprocating swing structure based on the rotating shaft as the rotating center is used, in order to prevent the swing action from exceeding a limited range in the mechanical execution process, a limiting protection structure is often arranged at the limit position of the swing.

The existing limiting protection structure is generally characterized in that a limiting block is fixed on a rotating shaft, two limiting nails are arranged on a circumferential path of the limiting block rotating along the axis of the rotating shaft, and the two limiting nails are correspondingly positioned at an upper swing limit position and a lower swing limit position on the circumferential path of the limiting block. The limiting block is limited by the limiting nail when rotating to the position of the limiting nail, and the mechanical execution reciprocating swing process is prevented from moving beyond the range.

When the structure is used, the position change of the limit nail is generally that a plurality of limit holes (namely the circumferential path of the limit block) are arranged on a preset rotating path, when a certain position is needed to be limited, the limit nail is connected with the corresponding position through threads, the limit of the structure is limited by the position of the preset hole, namely, the final limit position can be determined according to the position of the hole, the use flexibility is poor, and the adjusting range is limited.

The invention content is as follows:

the invention provides a protection mechanism for axial reciprocating swing of a rotating shaft, aiming at solving the problems in the prior art.

The technical scheme adopted by the invention is as follows: a protection mechanism for the axial reciprocating swing of a rotating shaft comprises a limiting shaft, sliding blocks, a sliding table, connecting blocks, rotating arms with rotating surfaces and limiting arms with limiting surfaces, wherein the two rotating arms are fixed on the limiting shaft, the two limiting arms are respectively arranged on one side of the rotating arm and are rotatably connected to the limiting shaft, the limiting surfaces are positioned on a rotating path of the rotating surfaces on the rotating arms rotating around the axis of the limiting shaft, the sliding table is horizontally arranged below the limiting shaft and between the two limiting arms, the two sliding blocks are arranged in parallel and are fixed on different positions of the sliding table along the sliding direction through sliding, and the two connecting blocks are respectively connected with one limiting arm in a sliding mode and hinged with the sliding block on the corresponding side; the two sliding blocks at different positions respectively enable the limiting surfaces on the limiting arms to be at different circumferential positions when the rotating surface rotates through the transmission of the corresponding connecting blocks and the limiting arms.

Further, be equipped with two tracks of mutual parallel arrangement on the slip table, and the axis mutually perpendicular of track and spacing axle, two sliders correspond sliding connection on two tracks, and the slider is fixed in on orbital different positions through sliding.

Furthermore, a locking block is inserted into the sliding block, the locking block is connected to the rail in a sliding mode, a locking screw is connected to the sliding block in a threaded mode, penetrates through the sliding block and abuts against the locking block, and the locking block abuts against the rail.

Furthermore, the rotating arm is of a circular block structure, a rectangular protruding block is arranged on the outer circumferential wall of the rotating arm, and a rotating surface is formed on one side end face of the protruding block.

Furthermore, the limiting arm is of a strip-shaped plate structure, a limiting block perpendicular to the limiting arm is arranged on the limiting arm, the limiting block is of a rectangular structure, and a side face, opposite to the rotating face, of the limiting block is a limiting face.

The invention has the following beneficial effects:

the position adjustment of the limiting arm is realized in a sliding displacement mode, and is realized through the motion conversion of straight line and rotation, so that the adjusting range is wide, and the use is flexible.

The two limiting arms are arranged and correspond to the upper swing limiting position and the lower swing limiting position respectively, are mutually independent and flexible to use, can be independently adjusted and controlled, and are extremely convenient to use.

Description of the drawings:

fig. 1 to 4 are structural views of the present invention.

Fig. 5 is a structural view of the rotating arm and the limiting arm in the present invention.

Fig. 6 is a diagram of an application of the present invention.

FIG. 7 is an actuation diagram of the angle limiting structure of FIG. 6 for limiting the foot pedal from exceeding a set range of motion.

Fig. 8 is a structural view of another application of the present invention.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 5, the protection mechanism for the axial reciprocating swing of the rotating shaft of the present invention includes a limiting shaft 31, a sliding block 34, a sliding table 35, a connecting block 36, a rotating arm 32 with a rotating surface 321, and a limiting arm 33 with a limiting surface 331.

The two rotating arms 32 are fixed at two ends of the limiting shaft 31, and the rotating surfaces 321 on the two rotating arms 32 are arranged in a staggered manner. The two limiting arms 33 are respectively arranged at the inner side of a rotating arm 32, and the two limiting arms 33 are rotatably connected to the limiting shaft 31 through bearings. The stopper surface 331 of the stopper arm 33 is located on a rotation path of the upper rotation surface 321 of the corresponding side rotation arm 32 around the axis of the stopper shaft 31.

The sliding table 35 is horizontally arranged below the limiting shaft 31, the sliding table 35 is located between the two limiting arms 33, the two sliding blocks 34 are arranged in parallel, the two sliding blocks 34 are fixed on different positions of the sliding table 35 along the sliding direction through sliding, the two connecting blocks 36 are respectively connected with the limiting arms 33 in a sliding mode, and the two connecting blocks 36 are respectively hinged to the sliding blocks 34 on the corresponding sides correspondingly.

The two sliding blocks 34 at different positions of the sliding table 35 in the sliding direction are respectively driven by the connecting block 36 and the limiting arm 33 at the corresponding side, so that the limiting surface 331 on the limiting arm 33 is at different circumferential positions when the rotating surface 321 rotates.

Two rails 351 arranged in parallel are arranged on the sliding table 35, the two rails 351 realize the sliding of the two sliders 34, and the direction of the rails 351 is the sliding direction of the sliders 34.

The track 351 is perpendicular to the axis of the limiting shaft 31, the two sliders 34 are correspondingly connected to the two tracks 351 in a sliding manner, and the sliders 34 are fixed on different positions of the track 351 in a sliding manner.

After the slider 34 slides to suitable position, in order to fix the position of slider 34, a latch segment 343 is inserted on the slider 34, the latch segment 343 is "H" shape structure, the draw-in groove of the upper end of the latch segment 343 and the slider 34 are mutually clamped, the draw-in groove of the lower end of the latch segment 343 is slidably connected on the track 351, a locking screw 344 is connected on the slider 34 in a threaded manner, and the locking screw 344 penetrates through the slider 34 and is abutted on the latch segment 343, and is abutted on the track 351. The position of the slider 34 on the track 351 can be adjusted by loosening the locking screw 344.

To facilitate mounting of the connecting blocks 36, a fixing plate 345 is fixed to an outer side surface of each slider 34, the fixing plate 345 is vertically disposed, and the connecting blocks 36 are hinged to outer end surfaces of the fixing plates 345.

The connecting block 36 is provided with a sliding groove 368, the limiting arm 33 is provided with a sliding rib 338, and the sliding rib 338 is inserted in the sliding groove 368, so that the sliding connection between the limiting arm 33 and the connecting block 36 is realized.

The rotating arm 32 has a circular block structure, and a fixing hole is formed in the rotating arm 32 in the circular direction, and the fixing hole is fixedly connected to the stopper shaft 31. A rectangular projection 320 is provided on the outer circumferential wall of the rotating arm 32, and a rotating surface 321 is formed on one end surface of the projection 320. After the two rotating arms 32 are fixed on the limiting shaft 31, the lugs 320 on the two rotating arms 32 are arranged in a staggered mode.

The limiting arm 33 is of a strip plate structure, a limiting block 330 perpendicular to the limiting arm 33 is arranged on the limiting arm 33, the limiting block 330 is of a rectangular structure, and a side surface of the limiting block 330 opposite to the rotating surface 321 in the bump 320 is a limiting surface 331.

The rotating arm 32 is fixed with a reference shaft (a limiting shaft 31 in the invention) of a rotating center into a whole, the rotating arm 32 is rotatably connected with the reference shaft, and the limiting arm 33 limits the rotation of the rotating arm 32. The limiting arm 33 rotates in the axial direction of the reference shaft and can be positioned at a fixed point at any time, the position of the limiting arm 33 is adjusted in a sliding displacement mode, the adjustment is realized through the transformation of straight lines and rotating motion, the adjusting range is wide, and the use is flexible. And the upper swing limit position and the lower swing limit position of the reference shaft are mutually independent, so that the device is flexible to use, can be independently adjusted and controlled, and is extremely convenient to use.