Push rod device
By setting a stepped section and a combined limiting structure of thrust bearing and rolling bearing in the bearing housing, the problem of axial movement of the electric linear actuator in the case of extension is solved, achieving higher stability and integration, and is suitable for grinding machines and other applications.
Patent Information
- Application Number
- CN202423110359.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing electric linear actuators are prone to axial movement when lengthened, affecting processing efficiency, and conventional linear actuator devices are not structurally stable enough.
A stepped section is provided in the bearing housing so that the thrust bearing and the rolling bearing can jointly limit the push rod axially and radially. The push rod is rotated by the end of the lead screw driven by the motor, and the thrust bearing and the rolling bearing rotate synchronously to limit the displacement of the push rod.
It improves the operational stability of the push rod, prevents push rod axial movement, enhances the integration and structural stability of the bearing housing, and is suitable for use with longer push rods.
Smart Images
Figure CN223713738U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of electric push rod, in particular to a kind of push rod device. BACKGROUND
[0002] The description in this section is provided only for purposes of summarizing aspects of the utility model disclosure, and is not intended to limit the present utility model.
[0003] Electric push rod as a kind of linear motion power conversion device of electric energy, its core technology is in motor, transmission mechanism and the efficient integration of control system.In grinder, the application of electric push rod mainly reflects in feed system, worktable adjustment etc., its high-precision, high-efficiency characteristics make the machining capacity of grinder has been significantly improved.But not enough detailed conventional push rod has been limited to travel. Therefore, the application scene of some push rod device needs to use longer push rod to achieve more wide adaptation position, but, in the case of push rod lengthening, it is easier to appear push rod up and down along axial situation, difficult to move smoothly, affect processing efficiency.
[0004] It should be noted that the above introduction to the technical background is only to facilitate the clear and complete description of the technical scheme of the utility model, and to facilitate the understanding of those skilled in the art. The above technical scheme cannot be considered as known to those skilled in the art just because it is described in the background section of the utility model. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a kind of push rod device, can be set in bearing seat by setting ladder part, so that thrust bearing and rolling bearing are limited to push rod along axial and radial direction, enhance the stability of push rod operation, and the same bearing seat integration is higher.
[0006] In order to achieve the above object, the utility model discloses a kind of push rod device, the push rod device includes:
[0007] Push rod, the push rod extends along axial direction;
[0008] Bearing seat, the bearing seat has through hole for the sleeve set the push rod, the through hole has annular ladder formed by protruding along radial direction inward;
[0009] Thrust bearing, the thrust bearing is installed in the vertical position of the ladder, and the push rod is abutted on the thrust bearing;
[0010] Rolling bearing, the rolling bearing is installed in the tread position of the ladder, and the push rod is set through the rolling bearing;
[0011] Motor, the output end of the motor is connected with the end of the push rod by screw rod end head.
[0012] The motor is arranged on one side of the thrust bearing.
[0013] As a further description of the above technical solution, when the motor drives the screw rod end to rotate the push rod around the axial direction, the inner ring of the thrust bearing rotates synchronously around the axial direction and limits the displacement of the push rod along the axial direction, and the inner ring of the rolling bearing rotates synchronously around the axial direction and limits the displacement of the push rod along the radial direction.
[0014] As a further description of the above technical solution, the thrust bearing and the rolling bearing are arranged adjacent to each other along the axial direction.
[0015] As a further description of the above technical solution, the thickness of the thrust bearing along the axial direction matches the thickness of the step along the axial direction, so that after the thrust bearing is installed in place, the end face of the thrust bearing is flush with the side of the bearing seat facing the motor.
[0016] As a further description of the above technical solution, the thickness of the rolling bearing along the axial direction matches the thickness of the through hole away from the step along the axial direction, so that after the rolling bearing is installed in place, the end face of the rolling bearing is flush with the side of the bearing seat away from the motor.
[0017] As a further description of the above technical solution, the size of the step along the radial direction matches the size of the rolling bearing along the radial direction.
[0018] As a further description of the above technical solution, the step is surrounded by 3mm alloy.
[0019] Through the above technical solution, the beneficial effects of the present application are as follows:
[0020] The push rod device of the present application can realize the axial and radial positioning of the push rod in the same bearing seat, so that the concentricity of the push rod rotation is higher and the push rod cannot move up and down, the structure of the same bearing seat is more stable, the integration is higher, and the device is easy to use.
[0021] For a further understanding of the features and technical contents of the present application, please refer to the following detailed description and drawings of the present application. However, the provided drawings are only used for reference and illustration, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to make the technical solutions in the description embodiments or prior art clearer, the following will briefly introduce the drawings needed to be used in the description embodiments or prior art description. Obviously, the drawings in the following description only some of the embodiments in the description, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0023] Figure 1 is a perspective view of a thrust bearing angle of a push rod device provided by the description embodiments;
[0024] Figure 2 is a perspective view of a rolling bearing angle of a push rod device provided by the description embodiments;
[0025] Figure 3 is a front view of a push rod device provided by the description embodiments;
[0026] In the figure: 1, push rod; 2, bearing seat; 3, step; 4, thrust bearing; 5, rolling bearing; 6, screw end. DETAILED DESCRIPTION
[0027] In order to make the technical solutions in the description embodiments or prior art clearer, the following will briefly introduce the drawings needed to be used in the description embodiments or prior art description. Obviously, the drawings in the following description only some of the embodiments in the description, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0028] The following is to illustrate the embodiments of the present application by specific embodiments, those skilled in the art can understand the advantages and effects of the present application from the disclosed content of the present application. The present application can be implemented or applied by other different specific embodiments, and each detail in the description can be modified and changed based on different viewpoints and applications without departing from the concept of the present application. In addition, the drawings of the present application are only simple schematic illustrations, not the actual size of the description, and the prior declaration. The following embodiments will further illustrate the related technical content of the present application, but the disclosed content is not used to limit the protection scope of the present application.
[0029] It should be understood that although the terms "first", "second", "third", etc. can be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein can include any combination of one or more associated listed items as appropriate.
[0030] Referring to Figures 1-3 A push rod device is provided in the embodiment, wherein the push rod device comprises:
[0031] A push rod 1, the push rod 1 extends along an axial direction;
[0032] A bearing seat 2, the bearing seat 2 has a through hole for sleeving the push rod 1, and the through hole has an annular step 3 formed by protruding radially inwardly;
[0033] A thrust bearing 4, the thrust bearing 4 is installed at a vertical position of the step 3, and the push rod 1 abuts against the thrust bearing 4;
[0034] A rolling bearing 5, the rolling bearing 5 is installed at a tread position of the step 3, and the push rod 1 passes through the rolling bearing 5;
[0035] A motor, an output end of the motor is connected to an end of the push rod 1 through a screw end head 6;
[0036] The motor is arranged at one side of the thrust bearing 4.
[0037] For the above structure, when being installed, an operator installs the thrust bearing 4 and the rolling bearing 5 in the through hole of the bearing seat 2 in sequence, abuts the end of the push rod 1 against the thrust bearing 4, limits the axial movement of the push rod 1 by the thrust bearing 4, makes the push rod 1 pass through the rolling bearing 5, makes the periphery of the end of the push rod 1 be covered by the rolling bearing 5, and realizes the transmission connection between the push rod 1 and the output end of the motor through the screw end head 6.
[0038] Through the above structure, when being used, the motor drives the screw end head 6 to drive the push rod 1 to rotate around the axial direction, at the same time, the inner ring of the thrust bearing 4 abuts against the end of the push rod 1, the inner ring of the thrust bearing 4 synchronously rotates around the axial direction, limits the axial displacement of the push rod 1, the inner ring of the rolling bearing 5 is connected to the periphery of the end of the push rod 1, the inner ring of the rolling bearing 5 synchronously rotates around the axial direction, and limits the radial displacement of the push rod 1.
[0039] In the above use process, when the possible axial forward and backward movement trend of the push rod 1 occurs, due to the abutment of the thrust bearing 4 at one end, the force of the above trend is resolved, and similarly, when the possible radial swing trend of the push rod 1 occurs, due to the peripheral covering of the rolling bearing 5 to the push rod 1, the force of the above trend is also resolved, so that the stable rotation of the push rod 1 can be effectively realized, especially in the case of using multiple pitch push rod and over-length size push rod, the above situation can be effectively avoided.
[0040] Further, the thrust bearing 4 and the rolling bearing 5 are arranged axially adjacent. At the same time, the axial thickness of the thrust bearing 4 matches the axial thickness of the step 3, so that after the thrust bearing 4 is installed in place, the end face of the thrust bearing 4 is flush with the side of the bearing seat 2 facing the motor; the axial thickness of the rolling bearing 5 matches the axial thickness of the through hole away from the side of the step 3, so that after the rolling bearing 5 is installed in place, the end face of the rolling bearing 5 is flush with the side of the bearing seat 2 away from the motor. Specifically, by means of the above structure, the axial volume of the bearing seat 2 can be minimized, and the degree of intensification of the entire push rod device is higher, and the overall volume is smaller and more compact, and it is not protruding, so that the product is more easily matched in different use scenarios. Of course, the above flush refers to the relative flush trend, for example, the thrust bearing 4 can have a certain degree of axial protrusion as shown in the figure, which does not affect the installation of the motor on one side, and most of the thrust bearing 4 body is arranged inside the through hole on the side of the step 3. Figure 1
[0041] Further, the radial size of the step 3 matches the radial size of the rolling bearing 5. Through the above structure, the end face of the rolling bearing 5 in the axial direction can be effectively and completely supported by the tread of the step 3, avoiding the possibility of axial movement of the rolling bearing 5 itself during installation or use. Similarly, the thrust bearing 4 is tightly limited by the vertical annular wall of the step 3, avoiding the possibility of radial displacement of the thrust bearing 4, which leads to its falling off. Specifically, the step 3 is surrounded by a 3mm alloy, that is, in this embodiment, a rolling bearing 5 with a corresponding size thickness is also selected to meet the need for limiting.
[0042] The above disclosed content is only a preferred feasible embodiment of the utility model, and does not limit the patent application range of the utility model, so that any equivalent technical change made by applying the contents of the utility model specification and drawings is included in the patent application range of the utility model.
[0043] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.
[0044] While the application has been depicted, described, and is defined by reference to particular embodiments, those skilled in the art understand that modifications and variations can be made to the application without departing from the spirit or scope of the application, and it is therefore contemplated to include such modifications and variations as come within the scope of the application.
Claims
1. A push rod device, characterized by The push rod device comprises: a push rod extending along an axial direction; a bearing seat having a through hole for sleeving the push rod, the through hole having a ring-shaped step formed by protruding radially inward; a thrust bearing installed at a vertical position of the step, and the push rod abutting against the thrust bearing; a rolling bearing installed at a tread position of the step, and the push rod penetrating through the rolling bearing; a motor, an output end of the motor being connected to a terminal end of the push rod through a screw end head; wherein the motor is arranged at one side of the thrust bearing.
2. The push rod device of claim 1, wherein: When the motor drives the screw end head to drive the push rod to rotate around the axial direction, the inner ring of the thrust bearing synchronously rotates around the axial direction and limits the displacement of the push rod along the axial direction, and the inner ring of the rolling bearing synchronously rotates around the axial direction and limits the displacement of the push rod along the radial direction.
3. The push bar device of claim 1, wherein: The thrust bearing and the rolling bearing are arranged adjacent to each other along the axial direction.
4. The push bar device of claim 1, wherein: The thickness of the thrust bearing along the axial direction matches the thickness of the step along the axial direction, so that after the thrust bearing is installed in place, the end face of the thrust bearing is flush with the side of the bearing seat facing the motor.
5. The putter device of claim 1, wherein: The thickness of the rolling bearing along the axial direction matches the thickness of the side of the through hole away from the step along the axial direction, so that after the rolling bearing is installed in place, the end face of the rolling bearing is flush with the side of the bearing seat away from the motor.
6. The putter device of claim 1, wherein: The size of the step along the radial direction matches the size of the rolling bearing along the radial direction.
7. The putter device of claim 1, wherein: The step is surrounded by 3mm alloy.