Anti-loose electric push rod

Abstract

The utility model discloses an anti-loose electric push rod which comprises a mounting plate, a push rod body is arranged on the mounting plate, an inner pipe used for bearing objects is further arranged in the push rod body, a driving motor is further arranged on the mounting plate, and an auxiliary bearing structure used for dispersing loads of the inner pipe is further arranged on the push rod body. The auxiliary bearing structure comprises a supporting seat, a bearing seat is arranged on the supporting seat, a plurality of locking bearing assemblies used for dispersing and positioning the bearing force of the inner pipe are further arranged on the inner wall of the bearing seat, and the locking bearing assemblies are connected with the corresponding locking grooves in a clamped mode. According to the device, auxiliary supporting can be automatically conducted on the inner pipe, the inner pipe is locked, meanwhile, through auxiliary supporting, the inner pipe can be borne, the load of the inner pipe on the lead screw is reduced, the situation that the lead screw is loosened due to the fact that the load of the lead screw is too large is effectively prevented, the service life of the lead screw is prolonged, and the service life of the lead screw is prolonged. And the use performance of the device is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of electric linear actuator technology, specifically relating to an anti-loosening electric linear actuator. Background Technology

[0002] An electric linear actuator is a new type of electric actuator. It mainly consists of a motor, a push rod, and a control device, enabling remote and centralized control. The electric linear actuator reciprocates within a certain stroke range. Standard strokes for electric linear actuators are typically 100, 150, 200, 250, 300, 350, and 400 mm, but custom strokes can be designed to meet specific application requirements. Electric linear actuators can be designed with different thrusts to handle varying loads, with a maximum thrust generally reaching 6000 N. The no-load operating speed is 4 mm to 35 mm / s. Powered by a 24V / 12V DC permanent magnet motor, the actuator converts the motor's rotational motion into linear reciprocating motion. During the extension and retraction process, a significant axial load is applied to the internal lead screw under load. To better withstand this axial load, a load-bearing structure is needed to reduce the load on the lead screw.

[0003] Currently, when using electric linear actuators, the inner tube cannot provide auxiliary support after being lifted, and the load on the lead screw cannot be reduced, which can easily cause the lead screw to loosen and affect the overall stability of use. Therefore, we propose an anti-loosening electric linear actuator. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-loosening electric linear actuator to solve the problem mentioned in the background art that, when the electric linear actuator is in use, the inner tube cannot provide auxiliary support for the inner tube after being lifted, and the load on the lead screw by the inner tube cannot be reduced, which easily causes the lead screw to loosen and affects the overall stability of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening electric push rod, including a mounting plate, a push rod body disposed on the mounting plate, an inner tube for bearing an object disposed within the push rod body, a drive motor disposed on the mounting plate, and an auxiliary bearing structure for dispersing the load on the inner tube disposed on the push rod body;

[0006] The auxiliary bearing structure includes a support base, which is disposed on one side surface of the push rod body. A bearing seat is disposed on the support base. Multiple sets of locking bearing components for dispersing and positioning the bearing force of the inner tube are also disposed on the inner wall of the bearing seat. The locking bearing components are engaged with corresponding locking grooves.

[0007] The locking grooves are arranged longitudinally and evenly on the outer surface of the inner tube.

[0008] Preferably, the locking bearing assembly includes a mounting groove, which is disposed on the inner wall of the bearing seat. A mounting box is also disposed in the mounting groove, and a locking rod is movably disposed in the mounting box. One end of the locking rod is provided with a locking buckle that automatically engages with the locking groove. By setting the locking buckle, the inner tube can bear the load after the inner tube is loaded, and the load of the inner tube on the lead screw can be reduced.

[0009] Preferably, the locking groove has a cross-section of an inverted right-angled trapezoid, which facilitates the automatic movement of the locking buckle when the inner tube moves.

[0010] Preferably, the locking buckle surface is provided with an inclined driving surface, which is flush with the inclined surface of the locking groove. By providing the inclined driving surface, the locking buckle can be automatically driven to move during the inner tube raising process, thereby improving the smoothness of the locking buckle movement.

[0011] Preferably, limiting sliders are also provided on both sides of the locking rod. One end of the limiting slider is slidably disposed in the limiting groove. The limiting groove is symmetrically disposed on both sides of the mounting box. By setting the limiting sliders, the movement position of the locking rod can be limited and guided when the locking rod moves.

[0012] Preferably, a return spring is provided on one side surface of the limiting slide groove. One end of the return spring is connected to the limiting slider. By providing the return spring, the locking buckle can be automatically engaged into the locking groove during the process of the inner tube rising.

[0013] Preferably, an electromagnet is also provided on one side surface of the mounting box. Each electromagnet is connected in series with a control switch. The control switch is located on one side surface of the push rod body and can simultaneously control the operation of the electromagnet and attract and fix the locking rod.

[0014] Preferably, the locking rod is made of metal, and the electromagnet can attract the locking rod to control its movement. By attracting the locking rod, the locking buckle can be automatically separated from the locking groove, which facilitates the retraction of the inner tube.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] During the raising process of the inner tube, this invention can automatically provide auxiliary support and lock the inner tube. At the same time, through auxiliary support, the inner tube can bear the load, reducing the load on the lead screw and effectively preventing the lead screw from becoming too heavy and loosening, thus ensuring the performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a half-sectional schematic diagram of the auxiliary load-bearing structure in this utility model;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a half-sectional structural diagram of the locking and bearing component in this utility model;

[0021] In the diagram: 1. Auxiliary load-bearing structure; 2. Control switch; 3. Mounting plate; 4. Drive motor; 5. Push rod body; 6. Inner tube; 11. Support base; 12. Load-bearing base; 13. Locking load-bearing assembly; 14. Locking groove; 131. Mounting box; 132. Electromagnet; 133. Locking rod; 134. Locking buckle; 135. Mounting groove; 136. Inclined drive surface; 137. Limiting slider; 138. Return spring; 139. Limiting slide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution: an anti-loosening electric push rod, including a mounting plate 3, a push rod body 5 on the mounting plate 3, an inner tube 6 for bearing an object inside the push rod body 5, a drive motor 4 on the mounting plate 3, the drive motor 4 can drive the lead screw to rotate through a gear transmission structure, and the rotation of the lead screw drives the inner tube 6 to move up and down, and an auxiliary bearing structure 1 for distributing the load on the inner tube 6 is also provided on the push rod body 5;

[0024] The auxiliary bearing structure 1 includes a support base 11, which is disposed on one side surface of the push rod body 5. A bearing base 12 is disposed on the support base 11. Multiple sets of locking bearing components 13 for dispersing and positioning the bearing force of the inner tube 6 are also disposed on the inner wall of the bearing base 12. The locking bearing components 13 are engaged with the corresponding locking grooves 14. The locking grooves 14 are evenly disposed longitudinally on the outer surface of the inner tube 6.

[0025] The locking bearing assembly 13 includes a mounting groove 135, which is disposed on the inner wall of the bearing seat 12. A mounting box 131 is also disposed in the mounting groove 135. A locking rod 133 is movably disposed in the mounting box 131. A locking buckle 134 is disposed at one end of the locking rod 133 and automatically engages with the locking groove 14. After the inner tube 6 is supported, it can support the inner tube 6 and reduce the load of the inner tube 6 on the lead screw.

[0026] Furthermore, the locking groove 14 has an inverted right-angled trapezoidal cross-section, which facilitates the automatic movement of the locking buckle 134 when the inner tube 6 moves.

[0027] Furthermore, the surface of the locking buckle 134 is provided with an inclined driving surface 136, which is flush with the inclined surface of the locking groove 14. By setting the inclined driving surface 136, the locking buckle 134 can be automatically driven to move during the process of raising the inner tube 6, thereby improving the smoothness of the movement of the locking buckle 134.

[0028] Furthermore, limiting sliders 137 are provided on both sides of the locking rod 133. One end of the limiting slider 137 is slidably disposed in the limiting groove 139. The limiting groove 139 is symmetrically disposed on both sides of the mounting box 131. By setting the limiting sliders 137, when the locking rod 133 moves, the locking rod 133 drives the limiting sliders 137 to move in the limiting groove 139, which can limit and guide the movement position of the locking rod 133.

[0029] Please see Figure 4 A return spring 138 is provided on one side surface of the limiting slide groove 139. One end of the return spring 138 is connected to the limiting slider 137. During the process of the inner tube 6 rising, as the inner tube 6 moves, it automatically drives the locking buckle 134 to move. The movement of the locking buckle 134 compresses the return spring 138. Through the elastic force of the return spring 138, the locking buckle 134 can be automatically locked into the locking groove 14.

[0030] An electromagnet 132 is also provided on one side of the mounting box 131. The electromagnets 132 are all connected in series with the control switch 2. The control switch 2 is located on one side of the push rod body 5 and can simultaneously control the operation of multiple sets of electromagnets 132 and attract and fix multiple sets of locking rods 133.

[0031] Furthermore, the locking rod 133 is made of metal, and the electromagnet 132 can attract the locking rod 133 to control its movement. By attracting the locking rod 133, the locking buckle 134 can be automatically separated from the locking groove 14, which facilitates the retraction of the inner tube 6.

[0032] Working principle and usage process of this utility model:

[0033] In use, the drive motor 4 drives the lead screw to rotate. As the lead screw rotates, the inner tube 6 is lifted. During the lifting process, the inner tube 6 moves the locking groove 14 upward. As the locking groove 14 moves, the locking buckle 134 moves. The movement of the locking buckle 134 moves the locking rod 133 within the mounting box 131. The movement of the locking rod 133 moves the limiting slider 137 within the limiting groove 139. The movement of the limiting slider 137 compresses the return spring 138. When the inner tube 6 moves to the support height, the return spring 138 moves the locking buckle 134 back to its original position and engages it in the corresponding locking groove 14. The locking buckle 134 can lock and support the inner tube 6, while also distributing the load on the inner tube 6 to prevent the lead screw from bearing excessive load and avoid the lead screw from becoming loose.

[0034] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening electric actuator, characterized in that: It includes a mounting plate (3), on which a push rod body (5) is provided, and an inner tube (6) for bearing the object is also provided inside the push rod body (5). A drive motor (4) is also provided on the mounting plate (3), and an auxiliary bearing structure (1) for dispersing the load of the inner tube (6) is also provided on the push rod body (5). The auxiliary bearing structure (1) includes a support base (11), which is disposed on one side surface of the push rod body (5). A bearing base (12) is disposed on the support base (11). Multiple sets of locking bearing components (13) for dispersing and positioning the bearing force of the inner tube (6) are also disposed on the inner wall of the bearing base (12). The locking bearing components (13) are engaged with the corresponding locking grooves (14). The locking groove (14) is arranged longitudinally and uniformly on the outer surface of the inner tube (6).

2. The anti-loosening electric actuator according to claim 1, characterized in that: The locking support assembly (13) includes a mounting groove (135), which is disposed on the inner wall of the support seat (12). A mounting box (131) is also disposed in the mounting groove (135). A locking rod (133) is movably disposed in the mounting box (131). One end of the locking rod (133) is provided with a locking buckle (134) that automatically engages with the locking groove (14).

3. The anti-loosening electric actuator according to claim 1 or 2, characterized in that: The locking groove (14) has an inverted right-angled trapezoidal cross-section.

4. The anti-loosening electric actuator according to claim 2, characterized in that: The locking buckle (134) has an inclined driving surface (136) on its surface, and the inclined driving surface (136) is flush with the inclined surface of the locking groove (14).

5. The anti-loosening electric actuator according to claim 2, characterized in that: Limiting sliders (137) are also provided on both sides of the locking rod (133). One end of the limiting slider (137) is slidably disposed in the limiting groove (139). The limiting groove (139) is symmetrically disposed on both sides of the mounting box (131).

6. The anti-loosening electric actuator according to claim 5, characterized in that: A reset spring (138) is provided on one side surface of the limiting slide groove (139), and one end of the reset spring (138) is connected to the limiting slider (137).

7. The anti-loosening electric actuator according to claim 5, characterized in that: An electromagnet (132) is also provided on one side surface of the mounting box (131). The electromagnet (132) is connected in series with the control switch (2). The control switch (2) is provided on one side surface of the push rod body (5).

8. The anti-loosening electric actuator according to claim 7, characterized in that: The locking rod (133) is made of metal, and the electromagnet (132) can attract the locking rod (133) to control the movement of the locking rod (133).

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