Electric push rod with accurate guide mechanism

Abstract

The utility model discloses an electric push rod with an accurate guide mechanism, which comprises a transmission module used for transmission and supporting, a servo motor is arranged at the input end of the upper end face of the transmission module, and a guide screw rod is arranged on one side, right opposite to the servo motor, of the upper end face of the transmission module. During guiding, the guiding stability of equipment can be effectively improved through sliding limiting of the two groups of guiding sliding shafts and the limiting shaft sleeve, and meanwhile, the two groups of sensing shifting pieces can synchronously move outside the grating detection shaft in real time when moving up and down along with the threaded sliding sleeve; the position sensor can monitor the displacement distance of the induction shifting piece in real time through the grating detection shaft, meanwhile, the servo motor is controlled to conduct position covering on the up-down displacement distance of the alignment clamping base, and the accuracy and stability of guiding of the electric push rod on equipment are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric push rod equipment, in particular to an electric push rod with a precise guiding mechanism. Background Art

[0002] The working principle of the electric linear actuator is mainly based on the conversion of the rotational motion of the motor and the linear motion of the screw nut. The electric linear actuator has been widely used in many fields due to its advantages such as simple structure, fast response, clean and environmental protection, high precision and versatility.

[0003] For example, the utility model patent disclosed in publication number CN217842557U discloses an electric push rod with a precise guide mechanism, comprising a fixed seat, a sliding frame, and a screw. One side of the top of the fixed seat is connected to a support sleeve via bolts. The top of the support sleeve is provided with a push rod, and the push rod is slidably connected relative to the support sleeve. The end of the push rod away from the support sleeve is connected to a connector via bolts. The top of the fixed seat is located on both sides of the support sleeve and is connected to a telescopic sleeve via bolts. The top of the telescopic sleeve is connected to a telescopic rod, and the top of the telescopic rod is provided with a sliding frame for auxiliary limit guide. The utility model provides an electric push rod with a precise guide mechanism, which has a simple structure, is easy to operate, is flexible and stable to use, has high practical value, and is suitable for widespread promotion and use.

[0004] Although the above-mentioned equipment can guide the electric push rod, it is not convenient to accurately monitor the guide position of the electric push rod according to needs, thereby reducing the accuracy of the electric push rod stroke guidance. Therefore, an electric push rod with a precise guiding mechanism is urgently needed to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide an electric push rod with a precise guide mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an electric push rod with a precise guide mechanism, comprising a transmission module for transmission and support, a servo motor being provided at the input end of the upper end face of the transmission module, and a guide screw being provided on the side of the upper end face of the transmission module facing the servo motor.

[0007] There are two guide slide shafts, each of which is arranged on both sides of the guide screw;

[0008] There are two groups of alignment slots, which are respectively arranged at the front and rear of the guide screw;

[0009] A feedback device, the feedback device being fixedly mounted on the upper end surface of the transmission module through the alignment slot;

[0010] A guide device is threadedly connected to the upper end surface of the transmission module through the guide screw.

[0011] Preferably, the guiding device includes a supporting base, a positioning base is fixedly provided at the center of the upper end surface of the supporting base, and a threaded sleeve is fixedly provided at the center of the lower end surface of the supporting base, two groups of sensing paddles for guiding are provided at the lower end surface of the threaded sleeve, and two groups of limiting sleeves are provided on the lower end surface of the supporting base with the threaded sleeve as the center.

[0012] Preferably, the feedback device includes a position sensor, a grating detection axis is fixedly provided at the center of the lower end surface of the position sensor, and a fixed base is fixedly provided at the center of the lower end surface of the grating detection axis, and a buffer gasket is provided on the lower end surface of the position sensor opposite to the grating detection axis.

[0013] Preferably, the support base is adapted to the guide sliding shaft through the limiting sleeve and then slidably engaged with the upper end surface of the transmission module, which can effectively improve the stability of the subsequent reciprocating movement of the support base on the upper part of the transmission module.

[0014] Preferably, the support base is adapted to the guide screw through the threaded sleeve and then threadedly connected to the upper end surface of the transmission module, which can effectively improve the stability and accuracy of the subsequent up and down displacement of the support base on the upper part of the transmission module.

[0015] Preferably, the sensing paddle is slidably engaged with the grating detection shaft, and the buffer gasket is made of rubber, which can effectively improve the subsequent protection performance of the sensing paddle, thereby increasing the service life of the sensing paddle in subsequent detections.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. During the guiding process, the sliding limit of the two sets of guide slide shafts and the limit sleeves can effectively improve the stability of the equipment guidance. At the same time, the two sets of sensor paddles can be synchronously displaced in real time outside the grating detection shaft when the threaded sleeve moves up and down, so that the position sensor can monitor the displacement spacing of the sensor paddles in real time through the grating detection shaft, and at the same time control the servo motor to fill the up and down displacement spacing of the positioning card seat, effectively improving the accuracy and stability of the electric push rod in guiding the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the main body of the utility model;

[0019] Figure 2 It is a structural diagram of the main body of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the guide device of the present utility model;

[0021] Figure 4 It is a structural diagram of the feedback device of the present utility model.

[0022] In the figure: 1-servo motor, 2-guide device, 3-feedback device, 4-guide slide shaft, 5-guide screw, 6-alignment slot, 7-transmission module, 21-alignment base, 22-threaded sleeve, 23-support base, 24-limiting sleeve, 25-sensing pick, 31-position sensor, 32-grating detection shaft, 33-fixed base, 34-buffer gasket. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The present invention provides an embodiment of an electric push rod with a precise guide mechanism, comprising a transmission module 7 for transmission and support, a servo motor 1 being provided at the input end of the upper end face of the transmission module 7, and a guide screw 5 being provided on the side of the upper end face of the transmission module 7 facing the servo motor 1.

[0025] There are two sets of guide slide shafts 4, which are respectively arranged on both sides of the guide screw rod 5;

[0026] There are two groups of alignment slots 6, which are respectively arranged at the front and rear of the guide screw rod 5;

[0027] Feedback device 3, which is fixed on the upper end surface of transmission module 7 through alignment slot 6;

[0028] The guide device 2 is threadedly connected to the upper end surface of the transmission module 7 through the guide screw 5.

[0029] The guiding device 2 includes a supporting base 23, an alignment base 21 is fixedly provided at the center of the upper end surface of the supporting base 23, and a threaded sleeve 22 is fixedly provided at the center of the lower end surface of the supporting base 23, two groups of sensing paddles 25 for guiding are provided at the lower end surface of the threaded sleeve 22, and two groups of limiting sleeves 24 are provided on the lower end surface of the supporting base 23 with the threaded sleeve 22 as the center.

[0030] The feedback device 3 includes a position sensor 31, a grating detection axis 32 is fixedly provided at the center of the lower end surface of the position sensor 31, and a fixed base 33 is fixedly provided at the center of the lower end surface of the grating detection axis 32. A buffer gasket 34 is provided on the lower end surface of the position sensor 31 opposite to the grating detection axis 32.

[0031] The support base 23 is adapted to the guide slide shaft 4 through the limiting shaft sleeve 24 and then slidably engaged with the upper end surface of the transmission module 7, which can effectively improve the stability of the subsequent reciprocating movement of the support base 23 on the upper part of the transmission module 7.

[0032] The support base 23 is adapted to the guide screw 5 through the threaded sleeve 22 and then threadedly connected to the upper end surface of the transmission module 7, which can effectively improve the stability and accuracy of the subsequent up and down displacement of the support base 23 on the upper part of the transmission module 7.

[0033] The sensing paddle 25 is slidably engaged with the grating detection shaft 32 , and the buffer gasket 34 is made of rubber, which can effectively improve the subsequent protection performance of the sensing paddle 25 , thereby increasing the service life of the sensing paddle 25 in subsequent detection.

[0034] Working principle: Before use, the staff can install the required guiding equipment on the top of the alignment card seat 21. When guiding the equipment, the servo motor 1 can be started. At this time, the servo motor 1 can provide power to the transmission module 7. After the transmission module 7 increases the power to torque, it drives the guide screw 5 to rotate. At this time, the guide screw 5 can drive the support card seat 23 and the alignment card seat 21 to move up and down reciprocatingly through the threaded connection with the threaded sleeve 22. At the same time, the sliding limit of the two sets of limit sleeves 24 and the guide slide shaft 4 can improve the stability of the alignment card seat 21 and the equipment guidance. When the alignment card seat 21 and the equipment are displaced, the threaded sleeve 22 can synchronously drive the sensing paddle 25 to move up and down synchronously on the outside of the grating detection shaft 32. At this time, the grating detection shaft 32 can control the opening and closing of the servo motor 1 through the position sensor 31 according to the spacing of the up and down displacement of the sensing paddle 25, so that the guide screw 5 can always drive the threaded sleeve 22 and the equipment to move up and down the same distance, effectively improving the accuracy and stability of the equipment guidance.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric push rod with a precise guide mechanism, comprising a transmission module (7) for transmission and support, a servo motor (1) being provided at an input end of an upper end surface of the transmission module (7), and a guide screw (5) being provided on a side of the upper end surface of the transmission module (7) facing the servo motor (1), characterized in that: Guide slide shafts (4), wherein two groups of guide slide shafts (4) are provided, and the guide slide shafts (4) are respectively arranged on both sides of the guide screw rod (5); Alignment slots (6), wherein two groups of alignment slots (6) are provided, and the two groups of alignment slots (6) are respectively arranged at the front and rear of the guide screw rod (5); A feedback device (3), wherein the feedback device (3) is fixedly arranged on the upper end surface of the transmission module (7) through the alignment slot (6); A guide device (2), wherein the guide device (2) is threadedly connected to the upper end surface of the transmission module (7) through the guide screw (5).

2. The electric linear actuator with a precise guide mechanism according to claim 1, characterized in that: The guide device (2) includes a support base (23), a positioning base (21) is fixedly provided at the center of the upper end surface of the support base (23), and a threaded sleeve (22) is fixedly provided at the center of the lower end surface of the support base (23), two groups of sensor picks (25) for guiding are provided at the lower end surface of the threaded sleeve (22), and two groups of limiting shaft sleeves (24) are provided at the lower end surface of the support base (23) with the threaded sleeve (22) as the center.

3. The electric linear actuator with a precise guide mechanism according to claim 2, characterized in that: The feedback device (3) includes a position sensor (31), a grating detection shaft (32) is fixedly provided at the center of the lower end surface of the position sensor (31), a fixed base (33) is fixedly provided at the center of the lower end surface of the grating detection shaft (32), and a buffer gasket (34) is provided at the lower end surface of the position sensor (31) directly opposite to the grating detection shaft (32).

4. The electric linear actuator with a precise guide mechanism according to claim 3, characterized in that: The support base (23) is adapted to the guide sliding shaft (4) through the limiting shaft sleeve (24) and is then slidably engaged with the upper end surface of the transmission module (7).

5. The electric linear actuator with a precise guide mechanism according to claim 3, characterized in that: The support base (23) is adapted to the guide screw (5) through the threaded sleeve (22) and is then threadedly connected to the upper end surface of the transmission module (7).

6. The electric linear actuator with a precise guide mechanism according to claim 3, characterized in that: The sensing paddle (25) is slidably engaged with the grating detection shaft (32), and the buffer gasket (34) is made of rubber.

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