Automatic control limiting device of electric push rod
By designing the automatic limiting device of the electric push rod of magnetic inductor and signal processor on the electric push rod, the problem of mechanical limit cannot be automatically cut off, and the automatic protection of the motor and the continuous production of the motor are achieved.
Patent Information
- Application Number
- CN202421979193.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-15
AI Technical Summary
In the existing aluminum liquid casting production, the mechanical limit of the electric push rod cannot be automatically cut off, resulting in frequent start-up and burning, and even the electric push rod is deformed and scrapped or the mechanical limit collapse, affecting the production continuity.
An electric push rod self-controlled limiting device is designed, including an external sleeve, an internal rotating screw, a motor, a limit monitoring magnetic induction contact, a magnetic inductor and an induction signal processor. The limit position is sensed through the magnetic inductor and the motor power is automatically cut off to avoid misoperation.
It realizes that the electric push rod is automatically powered off when it reaches the limit, avoiding motor burns and mechanical limit damage caused by misoperation, and ensuring the continuity of production and the integrity of equipment.
Smart Images
Figure CN223141739U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aluminum liquid melting and casting, and particularly relates to an electric push rod self-control limit device. Background Art
[0002] The statements in this part are only to provide background information related to the technical solution of the present application for the purpose of helping understanding, and it does not necessarily constitute the prior art for the technical solution of the present application.
[0003] During the production process of aluminum liquid melting and casting, in order to ensure the cleanliness of aluminum liquid, the filter box in the production is responsible for cleaning the aluminum liquid. The lid of the filter box needs to be frequently opened and operated. The opening and closing of the lid are responsible for an electric push rod installed on the side. The original electric push rod uses an external mechanical limit control for lifting. During use, after the mechanical limit reaches the upper and lower limits, since automatic power-off cannot be achieved and it cannot be visually judged on-site, misoperation by personnel causes the motor to start frequently and burn out, and even causes the electric push rod to deform and be scrapped or the mechanical limit to break, resulting in the production being forced to stop. Summary of the Utility Model
[0004] In view of the deficiencies existing in the above-mentioned prior art, the utility model provides an electric push rod self-control limit device.
[0005] One aspect of the utility model relates to an electric push rod self-control limit device, which is characterized by comprising: an external sleeve, an internal rotating screw, a motor for controlling the movement of the internal rotating screw, a limit monitoring magnetic induction contact at the bottom of the internal rotating screw, two magnetic sensors, two limit monitoring induction holes corresponding to the two magnetic sensors, and an induction signal processor connected to the two magnetic sensors;
[0006] The internal rotating screw can move up and down in the external sleeve under the control of the motor. The two limit monitoring induction holes penetrate the wall of the external sleeve and are respectively located at the upper limit and lower limit positions of the movement of the internal rotating screw. The two magnetic sensors are respectively installed in the two limit monitoring induction holes. The limit monitoring magnetic induction contact is a cylindrical boss, the diameter of which is larger than the diameter of the internal rotating screw and smaller than the inner diameter of the external sleeve. The induction signal processor is connected to the motor by wired or wireless means.
[0007] In one embodiment, the limit monitoring induction hole has threads, and the magnetic sensor is installed in the limit monitoring induction hole by screwing in.
[0008] In one embodiment, the magnetic sensor is installed in the limit monitoring induction hole through a fixing ring around the external sleeve.
[0009] In one embodiment, a nut for screwing into a magnetic inductor is provided on the fixing ring, and the position of the nut corresponds to the position of the limit monitoring induction hole.
[0010] In one embodiment, the magnetic inductor can be screwed into different depths, so as to adjust the distance between the magnetic inductor and the limit monitoring magnetic induction contact.
[0011] In one embodiment, the two magnetic inductors and the induction signal processor are connected by wires or wirelessly.
[0012] In one embodiment, the limit monitoring magnetic induction contact is welded to the bottom of the internal rotating screw.
[0013] In one embodiment, the limit monitoring magnetic induction contact is an O-shaped steel ring located at the bottom of the internal rotating screw.
[0014] The utility model provides an electric push rod self-control limit device, which ensures that when the internal rotating screw reaches the upper and lower limits, the corresponding magnetic inductor can immediately sense it and automatically cut off the power supply of the electric push rod motor, avoiding accidents such as frequent starting and burning of the motor caused by misoperation of personnel, and even deformation and scrapping of the electric push rod or breakage of mechanical limits. Description of the Drawings
[0015] The following further describes the embodiments of the present utility model with reference to the drawings, where:
[0016] Figure 1 Shows a three-dimensional schematic diagram (partial) of an electric push rod self-control limit device according to an embodiment of the present application;
[0017] Figure 2 Shows a cross-sectional schematic diagram (partial) of an electric push rod self-control limit device according to an embodiment of the present application. Detailed Description of the Embodiments
[0018] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model through specific embodiments with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0019] Figure 1 Shows a three-dimensional schematic diagram (partial) of an electric push rod self-control limit device according to an embodiment of the present application, Figure 2 Shows a cross-sectional schematic diagram (partial) of an electric push rod self-control limit device according to an embodiment of the present application.
[0020] In one embodiment, the electric push rod self-control limit device includes an outer sleeve 1, an inner rotating screw 2, a motor (not shown in the figure) for controlling the movement of the inner rotating screw 2, a limit monitoring magnetic induction contact 4 located at the bottom of the inner rotating screw 2, two magnetic sensors 3, two limit monitoring induction holes corresponding to the two magnetic sensors 3, and an induction signal processor (not shown in the figure) connected to the two magnetic sensors 3.
[0021] The inner rotating screw 2 can move up and down within the outer sleeve 1 under the control of the motor. The two limit monitoring induction holes penetrate the wall of the outer sleeve 1 and are respectively located at the upper limit and lower limit positions of the movement of the inner rotating screw 2. The two magnetic sensors 3 are respectively installed in the two limit monitoring induction holes. The limit monitoring magnetic induction contact 4 is a cylindrical boss, whose diameter is larger than the diameter of the inner rotating screw 2 and smaller than the inner diameter of the outer sleeve 1. The boss is made of ferromagnetic material, so that it can be sensed by the magnetic sensor 3 when it approaches the magnetic sensor 3. The induction signal processor can receive the induction signal from the magnetic sensor 3 and send corresponding instructions to the motor. The induction signal processor and the motor can be connected by wired or wireless means.
[0022] In one embodiment, the two magnetic sensors 3 are connected to the induction signal processor by wires. In one embodiment, the two magnetic sensors 3 are wirelessly connected to the induction signal processor.
[0023] In one embodiment, the limit monitoring induction hole has threads, and the magnetic sensor 3 is installed in the limit monitoring induction hole by screwing. In one embodiment, by screwing in or out the magnetic sensor 3, the distance between the magnetic sensor 3 and the limit monitoring magnetic induction contact 4 can be adjusted.
[0024] In one embodiment, the magnetic sensor 3 is installed in the limit monitoring induction hole by a fixing ring around the outer sleeve 1. In one embodiment, the fixing ring has a nut for screwing in the magnetic sensor 3, and the position of the nut corresponds to the position of the limit monitoring induction hole. By screwing in or out the magnetic sensor 3, the distance between the magnetic sensor 3 and the limit monitoring magnetic induction contact 4 can be adjusted.
[0025] In one embodiment, the fixing ring around the outer sleeve 1 is made of a 20-mm-wide flat steel bent to fit the shape of the outer diameter of the outer sleeve. At the interface, each is bent at a 90-degree angle, and the overlapping area of the bent angle is taken as the midpoint to drill a 6-mm-diameter hole. A 6-mm nut is welded to the outside of the hole on one side, and a 6-mm screw is inserted into the hole on the other side. At the same time, the screw and the nut are screwed in for fixing; a 100-mm-diameter round hole is drilled at the center position of the total length of the flat steel, and a 100-mm nut is welded at the position corresponding to the round hole for screwing in the magnetic sensor, and the distance between the magnetic sensor and the limit monitoring magnetic induction contact can be adjusted at any time.
[0026] In one embodiment, the limit monitoring magnetic induction contact 4 is welded to the bottom of the internal rotating screw 2.
[0027] In one embodiment, the limit monitoring magnetic induction contact 4 is an O-shaped steel ring located at the bottom of the internal rotating screw 2.
[0028] In one embodiment, the limit monitoring induction holes are two 100-mm round holes on the outer sleeve 1 corresponding to the upper limit position and the lower limit position of the movement of the internal rotating screw 2, and tapping can be performed according to the diameter of the magnetic inductor.
[0029] The electric push rod self-control limit device of the present utility model can ensure that the corresponding magnetic inductor can immediately sense when the internal rotating screw reaches the upper and lower limits, and automatically cut off the power supply of the electric push rod motor, avoiding the frequent start-up and burnout of the motor caused by misoperation of personnel, and even preventing accidents such as deformation and scrapping of the electric push rod or breakage of the mechanical limit.
[0030] References herein to "each embodiment", "some embodiments", "one embodiment" or "an embodiment" etc. refer to a particular feature, structure or property described in connection with the embodiment being included in at least one embodiment. Thus, the appearances of the phrases "in each embodiment", "in some embodiments", "in one embodiment" or "in an embodiment" etc. throughout this document are not necessarily referring to the same embodiment. Additionally, the particular features, structures or properties may be combined in any suitable manner in one or more embodiments. Therefore, the particular features, structures or properties shown or described in connection with one embodiment may be combined with the features, structures or properties of one or more other embodiments, either wholly or partially, without limitation, provided that the combination is not illogical or inoperative.
[0031] Some exemplary embodiments of the present utility model have been described above. It can be understood that the above embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model. The features in these embodiments can be recombined in a suitable manner, and the solutions obtained thereby are still within the protection scope required by the present utility model. Based on the above embodiments, all other embodiments obtained by those skilled in the art without creative efforts, that is, all modifications, equivalent replacements and improvements etc. made within the spirit and principle of this application, fall within the protection scope required by the present utility model.
Claims
1. An electric push rod self-control limit device, characterized in that, Comprising: An outer sleeve (1), an inner rotating screw (2), a motor for controlling the movement of the inner rotating screw (2), a limit monitoring magnetic induction contact (4) located at the bottom of the inner rotating screw (2), two magnetic sensors (3), two limit monitoring induction holes corresponding to the two magnetic sensors (3), and an induction signal processor connected to the two magnetic sensors (3); the inner rotating screw (2) can move up and down in the outer sleeve (1) under the control of the motor, the two limit monitoring induction holes penetrate the wall of the outer sleeve (1) and are respectively located at the upper limit and lower limit positions of the movement of the inner rotating screw (2), the two magnetic sensors (3) are respectively installed in the two limit monitoring induction holes, the limit monitoring magnetic induction contact (4) is a cylindrical boss, its diameter is larger than the diameter of the inner rotating screw (2) and smaller than the inner diameter of the outer sleeve (1), and the induction signal processor is connected to the motor in a wired or wireless manner.
2. The electric push rod automatic control limit device according to claim 1, wherein, The limit monitoring induction hole has threads, and the magnetic sensor (3) is installed in the limit monitoring induction hole by screwing in.
3. The electric push rod self-control limit device according to claim 1, wherein, The magnetic sensor (3) is installed in the limit monitoring induction hole through a fixing ring around the outer sleeve (1).
4. The electric push rod automatic control limit device according to claim 3, wherein, The fixing ring has a nut for screwing in the magnetic sensor (3), and the position of the nut corresponds to the position of the limit monitoring induction hole.
5. The electric push rod self-control limit device according to claim 2 or 4, wherein, The magnetic sensor (3) can be screwed in to different depths, so as to adjust the distance between the magnetic sensor (3) and the limit monitoring magnetic induction contact (4).
6. The electric push rod automatic control limit device according to claim 1, wherein, The two magnetic sensors (3) are connected to the induction signal processor by wires or wirelessly.
7. The electric push rod automatic control limit device according to claim 1, wherein, The limit monitoring magnetic induction contact (4) is welded to the bottom of the inner rotating screw (2).
8. The electric push rod self-control limit device according to claim 1, wherein, The limit monitoring magnetic induction contact (4) is an O-shaped steel ring located at the bottom of the inner rotating screw (2).