CN207426895U - A kind of adjustment structure on double thread formula reciprocating motor - Google Patents

Abstract

The utility model provides an adjustment structure on a double-thread type reciprocating motor, which belongs to the technical field of motors. It solves the problem of adjusting the limit position of the reciprocating motion of the motor. An adjustment structure on a double-threaded reciprocating motor. The reciprocating motor also includes a housing, a rotating shaft and a reciprocating push shaft. A plurality of contact plates 1 and 2 are radially slidably connected to the rotating shaft. The two ends of the reciprocating push shaft are respectively Connecting an external shaft, the reciprocating motor also includes two bushings, one of which is connected to the end of contact plate 1 on one side and the end of contact plate 2, and the other bush is connected to the contact plate on the other side The end of the first end and the end of the contact plate two are internally threaded with a limiting sleeve, and the limiting sleeve can abut against the end face of the reciprocating push shaft. The utility model has the advantages of being able to adjust the limit position of reciprocating motion and the like.

Description

An adjustment structure on a double-threaded reciprocating motor

technical field

The utility model belongs to the technical field of motors, and relates to an adjustment structure on a double-threaded reciprocating motor.

Background technique

Screw motors have always been one of the key points in the research of the motor industry, and are favored by people in the industry because of their smooth transmission and low noise.

However, the screw motor in the prior art needs to control the direction of the current through a circuit, or realize the forward and reverse rotation of the rotor through a frequency converter. In this way, its applicable environment is limited, and the underwater environment, high temperature environment, etc. will not work well. promotion.

The reciprocating motor in the prior art is realized by a connecting rod structure or a similar connecting rod structure, which has a low space utilization rate, and low transmission stability and transmission precision.

In the prior art, there are also mechanical transmission parts with a double thread structure. However, due to the change of the thread path, the manufacturing precision of the internal and external threads is extremely high, and it is easy to be disordered after being worn out, causing the motor to be stuck or burned out.

Contents of the invention

The purpose of this utility model is to provide an adjustment structure on a double-threaded reciprocating motor for the above-mentioned problems in the existing technology. The technical problem to be solved by this utility model is how to make the limit position of the reciprocating motor adjustable.

The purpose of this utility model can be achieved through the following technical solutions: an adjustment structure on a double-threaded reciprocating motor, characterized in that the reciprocating motor also includes a housing, a rotating shaft and a reciprocating push shaft, and radially slides on the rotating shaft Several pieces of contact plate 1 and contact plate 2 are connected, and the two ends of the reciprocating push shaft are respectively connected to an external shaft. The reciprocating motor also includes two bushings, one of which is connected to the end of contact plate 1 on one side. part and the end of contact plate 2, another shaft sleeve connects the end of contact plate 1 on the other side and the end of contact plate 2, and the inner thread of the shaft sleeve is connected with a limit sleeve, and the limit sleeve It can abut against the end face of the reciprocating push shaft.

By contacting the end surface of the reciprocating push shaft with the limit sleeve, the positions of the push rod 1 and push rod 2 connected to the limit sleeve are driven to change, thereby replacing the contact plate 1 or the contact plate 2 to engage with the reciprocating push shaft.

The limit position of the reciprocating push shaft movement can be adjusted by screwing in or rotating the limit sleeve, so that the reciprocating motor has better versatility.

In the above-mentioned adjustment structure on a double-threaded reciprocating motor, two protective covers respectively sleeved on the two ends of the circumscribed shaft are fixedly arranged on the housing, and an end cover is detachably connected to the protective cover. The end cover and the circumscribed shaft are connected by splines.

The protective cover protects the reciprocating motor from dust, protects the external shaft, and can also fix the external shaft so that it does not rotate, thereby improving reliability.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the reciprocating motor.

Fig. 2 is a schematic plan view of the reciprocating push shaft in the reciprocating motor.

Fig. 3 is a cross-sectional view of the rotating shaft in the reciprocating motor.

Fig. 4 is a sectional view of the reciprocating push shaft in the reciprocating motor.

In the figure, 11, housing; 12, rotor; 13, stator; 14, rotating shaft; 15, reciprocating push shaft; 21, external thread groove one; 22, external thread groove two; 23, connecting groove; ;32, contact plate two; 33, mounting hole one; 34, mounting hole two; 35, through hole one; 36, through hole two; 37, push rod one; 38, push rod two; 41, notch one; 42 , Notch 2; 43, Protrusion 1; 44, Protrusion 2; 45, Compression reed 1; 46, Compression reed 2; 5, External shaft; 61, Shaft sleeve; 62, Limit sleeve; 63 , bearing; 64, sleeve; 71, protective cover; 72, end cover.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, including casing 11, rotor 12 and stator 13, this reciprocating motor also includes rotating shaft 14 and reciprocating push shaft 15, and the middle part of reciprocating push shaft 15 has external thread groove 1 21 and external Thread groove 2 22, external thread groove 1 21 and external thread groove 2 22 have opposite thread directions, rotor 12 is fixed to the outer wall of rotating shaft 14, stator 13 is fixed to the inner wall of housing 11, and several blocks are radially slidably connected on rotating shaft 14 Contact plate one 31 and contact plate two 32, the inner thread protrusion one that cooperates with external thread groove one 21 is arranged on the inner wall of contact plate one 31, and the internal thread that cooperates with external thread groove two 22 is arranged on the inner wall of contact plate two 32 Protrusion two, between the rotating shaft 14 and the reciprocating push shaft 15, there is a reversing device that selects one to drive the contact plate one 31 to engage the external thread groove one 21 or the contact plate two 32 to engage the external thread groove two 22.

After the stator 13 is energized, the rotor 12 and the rotating shaft 14 rotate. Under the action of the reversing device, the external thread groove-21 cooperates with the internal thread convex line on the contact plate-31, so that the reciprocating push shaft 15 moves to one end, and moves to After the limit position, the reversing device drives the external thread groove 22 to cooperate with the internal thread convex line 2 on the contact plate 2 32, and at the same time, the external thread groove 1 21 disengages from the engagement of the internal thread convex line 1 of the contact plate 31, Make the reciprocating push shaft 15 move to the other side, and repeat like this; of course, the connection between the reciprocating push shaft 15 and the parts that need to be pushed limits the rotation of the reciprocating push shaft 15 .

The reversing device comprises a mounting hole 1 33 and a mounting hole 34 provided in the rotating shaft 14, the contact plate 1 31 is slidably connected in the mounting hole 33, the contact plate 2 32 is slidably connected in the mounting hole 2 34, and the contact plate 31 is slidably connected in the mounting hole 34. A through hole 35 is opened inside, a through hole 36 is opened in the contact plate 2 32, a push rod 37 is inserted in the through hole 1 35, a push rod 2 38 is inserted in the through hole 36, and a through hole 35 is inserted in the through hole 1 35. The inner wall of the through hole 36 is provided with some notches 1 41, the push rod 1 37 has a protrusion 43 corresponding to the notch 1 41, the inner wall of the through hole 2 36 is provided with some notches 2 42, and the push rod 2 38 has The protrusion two 44 corresponding to the notch two 42, between the contact plate one 31 and the mounting hole one 33, there is a compression reed one 45 that drives the contact plate one 31 to move towards the axial direction of the rotating shaft 14, the contact plate two 32 and the mounting hole one 33 There is a compression reed 2 46 that drives the contact plate 2 32 to move towards the axial direction of the rotating shaft 14 between the holes 2 34; function, always keep the tendency to push inward, when the contact plate-31 is under the action of the push rod-37, so that the protrusion-43 corresponds to the notch-41, and the contact plate-31 is under the action of the compression reed-45 Move to the direction of the reciprocating push shaft 15, and make the internal thread protrusion one engage with the external thread groove one 21, and the reciprocating push shaft 15 moves to one side. Similarly, the reciprocating push shaft 15 can move to the other side.

Compression reed 1 45 and compression reed 2 46 are corrugated elastic metal sheets; Sheet 2 is welded with the outer wall of contact plate 1 31 and the outer wall of mounting hole 1 33 respectively, and compression reed 2 46 includes several concave fixed sheet 3 and outwardly protruding fixed sheet 4, fixed sheet 3 and fixed sheet 4 Weld with the outer wall of the contact plate 2 32 and the outer wall of the mounting hole 34 respectively; this structure can ensure that the compression reed 1 45 and the compression reed 2 46 have uniform elastic force, and will not cause the contact plate 1 31 and the contact Plate two 32 is bent or tilted so that it moves in parallel.

The two ends of the reciprocating push shaft 15 are respectively connected with an external shaft 5. The reciprocating motor also includes two bushings 61, one of which is connected to the end of the contact plate one 31 and the end of the contact plate two 32 on one side. , another shaft sleeve 61 is connected to the end of the contact plate one 31 and the end portion of the contact plate two 32 on the other side, the shaft sleeve 61 is internally threaded with a limit sleeve 62, the limit sleeve 62 can be connected with the reciprocating push shaft 15 The end face of the push rod 15 contacts the limit sleeve 62 by reciprocating the end face of the push shaft 15, so that the positions of the push rod one 37 and the push rod two 38 connected to the limit sleeve 62 are changed, thereby replacing the contact plate one 31 or the contact plate Two 32 are engaged with the reciprocating push shaft 15; by screwing in or screwing the limit sleeve 62, the limit position of the reciprocating push shaft 15 motion can be adjusted, so that the reciprocating motor has better versatility.

There are two sockets on the housing 11, a bearing 63 is fixedly arranged on the hole wall of the socket, a sleeve 64 is inserted in the bearing 63, the outer wall of the sleeve 64 is fixedly connected with the inner ring of the bearing 63, and the sleeve 64 The inner wall is connected with the outer wall of the shaft sleeve 61 through a spline; this structure enables the first push rod 37 and the second push rod 38 to move axially and rotate around the axis of the rotating shaft 14 .

The first contact plate 31 has two pieces, and is an arc-shaped curved plate, and the second contact plate 32 has two pieces, and is an arc-shaped curved plate, and the first contact plate 31 and the second contact plate 32 are distributed alternately.

As shown in Figure 4, external thread groove one 21 is U-shaped, external thread groove two 22 is semicircular, and the helix angle of external thread groove one 21 and external thread groove two 22 is the same, and the groove width of external thread groove one 21 is larger than The groove width of the second external thread groove 22; the different settings of the first external thread groove 21 and the second external thread groove 22 can effectively avoid toothing and mis-engagement.

Both the openings of the first external thread groove 21 and the second external thread groove 22 have curved surface chamfers with the axial surface of the reciprocating push shaft 15; the curved surface chamfers can improve the smoothness of engagement.

The axial faces of the two ends of the reciprocating push shaft 15 all have the connection groove 23 that external thread groove one 21 and external thread groove two 22 are conducted; The circulation between the two grooves 22 makes the lubricating and cooling effects better.

The casing 11 is fixedly provided with two protective covers 71 respectively sleeved on both ends of the external shaft 5, and the protective cover 71 is detachably connected with an end cover 72, which is connected by a spline between the end cover 72 and the external shaft 5; The cover 71 protects the reciprocating motor from dust, protects the external shaft 5, and can also fix the external shaft 5 so that it does not rotate, thereby improving reliability.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (2)

1. An adjustment structure on a double-threaded reciprocating motor, characterized in that, the reciprocating motor also includes a housing (11), a rotating shaft (14) and a reciprocating push shaft (15), and the radial direction on the rotating shaft (14) A plurality of contact plates one (31) and two contact plates (32) are slidingly connected, and the two ends of the reciprocating push shaft (15) are connected with an external shaft (5) respectively, and the reciprocating motor also includes two axle sleeves (61 ), one of the sleeves (61) connects the end of contact plate one (31) on one side and the end of contact plate two (32), and the other sleeve (61) connects contact plate one on the other side The end of (31) and the end of contact plate two (32), described axle sleeve (61) internal thread is connected with a spacer sleeve (62), and described spacer sleeve (62) can be pushed back and forth with shaft (15) ) against the end face. 2. The adjustment structure on a double-threaded reciprocating motor according to claim 1, characterized in that, the housing (11) is fixedly provided with two protective devices respectively sleeved on both ends of the external shaft (5). A cover (71), the protective cover (71) is detachably connected with an end cover (72), and the end cover (72) is connected to the circumscribed shaft (5) by a spline.