CN216599285U

CN216599285U - Device for converting rotary motion into linear reciprocating motion

Info

Publication number: CN216599285U
Application number: CN202122942200.7U
Authority: CN
Inventors: 张铭增; 李树森; 桑嘉坡; 叶文洪; 李治强
Original assignee: Delaine Tianjin Technology Co ltd
Current assignee: Delaine Tianjin Technology Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-05-24
Anticipated expiration: 2031-11-25

Abstract

The utility model belongs to the technical field of motion conversion, and particularly discloses a device for converting rotary motion into linear reciprocating motion, which comprises a rotary motor for driving a spline shaft to rotate, wherein the output end of the rotary motor is in transmission connection with the spline shaft, a motion shaft sleeve is sleeved on the outer side of the spline shaft and is in transmission connection with the spline shaft, an installation cover is in threaded connection with the outer side of the output end of the rotary motor, two symmetrically distributed bolts are in threaded connection with the middle position of the inner side of the installation cover, and the bottom ends of the bolts penetrate through the installation cover and extend to the inner side of the installation cover; the reciprocating linear motion mechanism has the advantages that the reciprocating linear motion mechanism is simple in structure, easy to machine and manufacture, small in occupied space, capable of adjusting reciprocating linear motion stroke only by replacing a few parts, and the rotating direction and the linear motion direction are on different planes, and the rotating spiral line concave-convex mechanism formed by utilizing the left half spiral lead and the right half spiral lead is used as the mechanism for changing the stress of the repeated linear motion.

Description

Device for converting rotary motion into linear reciprocating motion

Technical Field

The utility model relates to the technical field of motion conversion, in particular to a device for converting rotary motion into linear reciprocating motion.

Background

In industry, it is necessary to convert the rotary motion of a rotating electrical machine into a linear motion, as required by the application. Common methods are pneumatic, hydraulic, rack and pinion, synchronous belts, lead screw drives, and the like. The above-described method of converting rotational motion into linear motion is widely used according to the requirements of different applications, such as stroke, accuracy, linear thrust, mechanical efficiency, installation, maintenance, etc.

In the field of motion conversion technology, a device for converting rotary motion into linear reciprocating motion generally adopts a crank-slider mechanism, a cam, an 8-shaped mechanism and the like, the mechanisms occupy large space or have small conversion force, and the direction of the rotary motion and the direction of the linear motion after conversion can only be on one plane.

Therefore, the present disclosure provides a device for converting a rotational motion into a linear reciprocating motion, which has a small occupied space and can convert the rotational motion into a linear motion in different planes, so as to solve the above problems in the related art.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a device for converting rotational motion into linear reciprocating motion, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a rotary motion converts straight reciprocating motion device into, is including the rotating electrical machines that is used for driving integral key shaft rotary motion, the output of rotating electrical machines with the integral key shaft transmission is connected, the outside cover of integral key shaft is equipped with the motion axle sleeve, the motion axle sleeve with the integral key shaft transmission is connected, the output outside spiro union of rotating electrical machines has the installation cover, the inboard intermediate position department spiro union of installation cover has two symmetrically distributed's bolt, the bottom of bolt runs through the installation cover and extends to the installation cover is inboard, the bolt extends to the inboard one end cover of installation cover is equipped with deep groove ball bearing, the bolt exposes the one end spiro union of installation cover has the nut, the surface of motion axle sleeve is provided with the helix boss, the helix boss is located two bolt intermediate position department to press from both sides and establish two bolt bottom suit between the deep groove ball bearing, the spiral line boss and the motion shaft sleeve are integrally formed, and the linear reciprocating motion stroke of the motion shaft sleeve is equal to the distance between two spiral line bosses in the left-right spiral half lead direction along the axis.

As a still further scheme of the utility model: the spline shaft is connected with the output shaft of the rotating motor to perform synchronous rotating motion, and the outer side wall of the spline shaft is fixedly provided with a spline bulge.

As a still further scheme of the utility model: and a spline groove matched with the spline protrusion is fixedly arranged on the inner wall of the motion shaft sleeve.

As a still further scheme of the utility model: the spiral line boss is processed in a left-right spiral symmetry manner in a semi-circle mode by taking a plane passing through the central line of the motion shaft sleeve as a symmetry plane.

As a still further scheme of the utility model: and the mounting cover is provided with a processing hole for mounting the bolt.

Compared with the prior art, the utility model has the beneficial effects that:

1. simple structure, easy processing and manufacturing and small occupied space of the mechanism.

2. The direction of the rotational movement is in a different plane than the direction of the linear movement.

3. A rotational spiral concave-convex mechanism formed by using left and right half spiral leads.

4. The rotating mechanism is used as a mechanism for changing the stress of the repeated linear motion, and the stroke of the reciprocating linear motion can be conveniently adjusted by only replacing a few parts.

Drawings

FIG. 1 is a schematic structural diagram of a device for converting rotary motion into linear reciprocating motion;

FIG. 2 is a schematic axial view of a moving sleeve of a device for converting rotary motion into linear reciprocating motion;

fig. 3 is a schematic front view showing a structure of a moving sleeve in a device for converting a rotary motion into a linear reciprocating motion.

In the figure: 1. a rotating electric machine; 2. mounting a cover; 3. a spline shaft; 31. a spline projection; 4. a motion shaft sleeve; 41. a helical line boss; 42. a spline groove; 5. a bolt; 6. a deep groove ball bearing; 7. and a nut.

Detailed Description

Referring to fig. 1 to 3, in the embodiment of the present invention, a device for converting a rotational motion into a linear reciprocating motion includes a rotating electrical machine 1 for driving a spline shaft 3 to rotate, an output end of the rotating electrical machine 1 is in transmission connection with the spline shaft 3, a moving shaft sleeve 4 is sleeved outside the spline shaft 3, the moving shaft sleeve 4 is in transmission connection with the spline shaft 3, an installation cover 2 is screwed outside an output end of the rotating electrical machine 1, two symmetrically distributed bolts 5 are screwed in a middle position of an inner side of the installation cover 2, bottom ends of the bolts 5 penetrate through the installation cover 2 and extend to the inner side of the installation cover 2, a deep groove ball bearing 6 is sleeved at one end of each bolt 5 extending to the inner side of the installation cover 2, a nut 7 is screwed at one end of each bolt 5 exposed out of the installation cover 2, a spiral line boss 41 is disposed on an outer surface of the moving shaft sleeve 4, the spiral line boss 41 is located in a middle position of the two bolts 5 and is sandwiched between the deep groove ball bearings 6 sleeved at bottom ends of the two bolts 5, the spiral line boss 41 and the moving shaft sleeve 4 are integrally formed, and the linear reciprocating motion stroke of the moving shaft sleeve 4 is equal to the distance between two pieces 411 of the spiral line boss 41 in the left and right spiral half lead directions along the axis.

In this embodiment: the output end of a rotating motor 1 is in transmission connection with a spline shaft 3, a moving shaft sleeve 4 is sleeved on the outer side of the spline shaft 3, the moving shaft sleeve 4 is in transmission connection with the spline shaft 3, a spiral line boss 41 is arranged on the outer surface of the moving shaft sleeve 4, the spiral line boss 41 is positioned in the middle of two bolts 5 and is clamped between deep groove ball bearings 6 sleeved at the bottom ends of the two bolts 5, through adjusting the center distance of the bolts 5, the outer surface of the outer rings of the two deep groove ball bearings 6 is ensured to be in tangential contact with the two parallel surfaces of the spiral line boss 41 on the moving shaft sleeve 4 along the axial direction, when the moving shaft sleeve 4 is driven to rotate by the rotating motor 1, the spiral line boss 41 is contacted with the deep groove ball bearings 6, the moving shaft sleeve 4 is pushed by the deep groove ball bearings 6 to move forwards (or backwards) linearly, when the processing sharp point of the spiral line boss 41 moves to coincide with the central line of the two deep groove ball bearings 6, the spiral line boss 41 is processed into a point-concave side to be contacted with the tangent points of the two deep groove ball bearings 6, when the motion shaft sleeve 4 is driven by the rotating motor 1 to continue to do rotary motion, the tangent points of the spiral line boss 41 and the two deep groove ball bearings 6 are changed into another half circle, the motion shaft sleeve 4 is pushed by the deep groove ball bearings 6 to change the linear motion direction, and the motion shaft sleeve moves backwards (or forwards) in a linear motion manner; the stroke of the linear reciprocating motion of the motion shaft sleeve 4 is equal to the distance between two 411 of the spiral boss 41 along the axis in the left and right spiral half lead direction, the stroke of the linear motion of the motion shaft sleeve 4 can be changed by changing the distance between two processing sharp points of the spiral boss 41, the center distance of the mounting bolt 5 of the mounting cover 2 is adjustable, only the motion shaft sleeve 4 is replaced during use, the stroke of the linear motion can be adjusted without changing other parts, the structure is simple, the processing and manufacturing are easy, the occupied space of the mechanism is small, and the direction of the rotary motion and the direction of the linear motion are on different planes.

As shown in fig. 1 and fig. 2, the spline shaft 3 is connected with the output shaft of the rotating electrical machine 1 to perform synchronous rotating motion, the outer side wall of the spline shaft 3 is fixedly provided with a spline protrusion 31, and the inner wall of the moving shaft sleeve 4 is fixedly provided with a spline groove 42 matched with the spline protrusion 31; and the spline shaft 3 is matched to play a linear motion guiding role and a rotating torque transmitting role.

Referring to fig. 2 and 3, the spiral boss 41 is processed in a symmetrical manner in a left-right spiral manner around a half circle by taking a plane passing through the center line of the moving sleeve 4 as a symmetrical plane; the linear reciprocating motion stroke of the motion shaft sleeve 4 is equal to the distance between two processing sharp points of the spiral line boss 41 along the left and right spiral half lead directions of the axis.

As shown in fig. 1, the mounting cover 2 is provided with a hole for mounting the bolt 5.

The working principle of the utility model is as follows: the deep groove ball bearings 6 are sleeved on the bolts 5, the bolts 5 are fixed in processing holes (grooves) on the surface of the mounting cover 2 by nuts 7, the center distance of the bolts 5 is adjusted to ensure that the outer surfaces of the outer rings of the two deep groove ball bearings 6 are in tangential contact with two parallel surfaces of a spiral line boss 41 on the motion shaft sleeve 4 along the axial direction, when the motion shaft sleeve 4 is driven by the rotating motor 1 to rotate, the spiral line boss 41 is in contact with the deep groove ball bearings 6, the motion shaft sleeve 4 moves forwards (or backwards) in a linear motion under the pushing of the deep groove ball bearings 6, when the processing sharp point of the spiral line boss 41 moves to coincide with the connecting line of the center lines of the two deep groove ball bearings 6, the processing sharp point concave side of the spiral line boss 41 is in contact with the two deep groove ball bearings 6, when the motion shaft sleeve 4 continues to rotate under the driving of the rotating motor 1, the tangential point of the spiral line boss 41 and the two deep groove ball bearings 6 is changed into another semi-circle, the linear motion direction of the motion shaft sleeve 4 is changed under the pushing of the deep groove ball bearing 6, the motion shaft sleeve is moved linearly backwards (or forwards), the linear motion stroke of the motion shaft sleeve 4 can be changed by changing the distance between two processing sharp points of the spiral line boss 41, the center distance of the mounting bolt 5 of the mounting cover 2 is adjustable, the motion shaft sleeve 4 is only replaced when the linear motion mechanism is used, the linear motion stroke can be adjusted without changing other parts, the structure is simple, the processing and the manufacturing are easy, the occupied space of the mechanism is small, and the direction of the rotary motion and the direction of the linear motion are on different planes.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. The utility model provides a rotary motion converts linear reciprocating motion device into, including rotating electrical machines (1) that are used for driving integral key shaft (3) rotary motion, its characterized in that, the output of rotating electrical machines (1) with integral key shaft (3) transmission is connected, the outside cover of integral key shaft (3) is equipped with motion axle sleeve (4), motion axle sleeve (4) with integral key shaft (3) transmission is connected, the output outside spiro union of rotating electrical machines (1) has installation cover (2), the inboard intermediate position department spiro union of installation cover (2) has two symmetric distribution's bolt (5), the bottom of bolt (5) is run through installation cover (2) and extend to installation cover (2) are inboard, bolt (5) extend to the inboard one end cover of installation cover (2) is equipped with deep groove (6), bolt (5) expose the one end spiro union of installation cover (2) has nut (7), the surface of motion axle sleeve (4) is provided with helix boss (41), helix boss (41) are located two bolt (5) intermediate position department to press from both sides and establish two bolt (5) bottom suit between deep groove ball bearing (6), helix boss (41) with motion axle sleeve (4) integrated into one piece, motion axle sleeve (4) straight reciprocating motion stroke equals distance between two (411) of half helical pitch direction about the axis is followed to helix boss (41).

2. The device for converting rotary motion into linear reciprocating motion as claimed in claim 1, wherein the spline shaft (3) is connected with the output shaft of the rotary motor (1) for synchronous rotary motion, and the spline shaft (3) is fixedly provided with a spline protrusion (31) on the outer side wall.

3. A device for converting rotary motion into linear reciprocating motion according to claim 2, characterized in that the inner wall of the motion shaft sleeve (4) is fixedly provided with spline grooves (42) matched with the spline protrusions (31).

4. The device for converting rotary motion into linear reciprocating motion as claimed in claim 1, wherein the helical line boss (41) is processed in a semicircular left-right helical symmetry mode by taking a plane passing through the central line of the motion shaft sleeve (4) as a symmetry plane.

5. The device for converting rotary motion into linear reciprocating motion according to claim 1, wherein the mounting cover (2) is provided with a processing hole for mounting the bolt (5).