Quick pressing device for lead screw bearing of electric actuator

Abstract

The utility model relates to the technical field of electric actuator lead screws, and discloses an electric actuator lead screw bearing quick pressing device which comprises a support, a lead screw, lead screw supports rotationally connected to the upper end and the lower end of the lead screw respectively, sleeve plates fixedly connected to the top and the bottom of the left side of the support respectively, and connecting rods connected to the inner sides of the sleeve plates in a sliding mode. A pressing structure used for pressing the lead screw support is arranged at the top end of the top connecting rod and comprises a pressing plate fixedly connected to the top end of the top connecting rod. According to the electric actuator lead screw bearing rapid pressing device, the pressing structure is easy to install and operate, rapid pressing and fixing of the lead screw bearing can be achieved through simple operation, complex tools and steps are not needed, sufficient space is reserved for the driving assembly, the lead screw can be driven by the driving assembly to rotate, high-efficiency transmission is guaranteed, and the service life of the lead screw bearing is prolonged. The device is simple in structure, reasonable in connection and matching of all parts and easy to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuator screw rods, in particular to a quick pressing device for a screw rod bearing of an electric actuator. Background Art

[0002] Electric actuators are indispensable actuators in process automation control systems, with large usage and wide applications. The working principle of the electric actuator is to control the motor to drive the screw to rotate forward and reverse, and drive the output shaft of the electric actuator to move upward or downward accordingly through the screw, thereby completing the opening or closing of the valve. The screw bearing is also called the screw support. The screw bearing is mainly used to support the operation of the screw, and plays a supporting, positioning and guiding role. It can not only withstand axial loads, but also withstand certain radial loads and tilting moments.

[0003] Chinese patent announcement No. CN209245410U proposes a quick clamping device for an electric actuator screw bearing. The utility model proposes that: the existing technical solution has the problem that "the bearing clamping installation device has a complex structure, large equipment investment, high cost, and is not suitable for locking the electric actuator screw bearing". The following technical solution is proposed: "Manually locking the electric actuator screw bearing has the problems of low efficiency, high labor intensity, and difficult to control locking torque, which affects product quality". However, in this technical solution, there is no drive device for the screw and no reserved space for installing the drive device. The screw is a transmission element that converts rotational motion into linear motion. It cannot be used without a drive component that makes it rotate. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a quick clamping device for a screw bearing of an electric actuator, which has the advantages of simple structure, easy installation, and reserved space for a drive component for the screw.

[0006] (II) Technical solution

[0007] In order to achieve the purpose of the above structure being simple, easy to install, and reserving space for the drive assembly for the screw rod, the utility model provides the following technical solutions: a quick pressing device for a screw rod bearing of an electric actuator, comprising a bracket, a screw rod, a screw rod support respectively rotatably connected to the upper and lower ends of the screw rod, a sleeve plate respectively fixedly connected to the left top and left bottom of the bracket, and a connecting rod slidably connected to the inner side of the sleeve plate, and a pressing structure for pressing the screw rod support is provided at the top end of the connecting rod;

[0008] The clamping structure includes a pressing plate fixedly connected to the top of the top connecting rod, an inserting block fixedly connected to the bottom of the pressing plate, an elastic component fixedly connected to the inner top wall of the inserting block, and an inserting sheet fixedly connected to the other side of the elastic component.

[0009] Furthermore, the left side wall of the bracket is fixedly connected with a sleeve, the bottom end of the top connecting rod is fixedly connected with a magnetic block and is located on the inner side of the sleeve, and the top end of the bottom connecting rod is fixedly connected with an iron block that matches the magnetic block and is located on the inner side of the sleeve.

[0010] Furthermore, the elastic component includes a telescopic rod fixedly connected to the inner top wall of the plug block, a spring arranged on the outside of the telescopic rod, and a slide plate fixedly connected to the bottom end of the piston rod of the telescopic rod.

[0011] Furthermore, sliding blocks are fixedly connected to the left and right sides of the slide plate, and the inner left wall and the inner right wall of the insert block are provided with sliding grooves adapted to the sliding blocks.

[0012] Furthermore, the number of the inserts is two, and the two inserts are respectively located on the left and right sides of the telescopic rod, and the upper surface of the screw rod support at the top is provided with two slots adapted to the inserts.

[0013] Furthermore, the bottom end of the connecting rod at the bottom is fixedly connected to a fixing plate, and the upper surface of the fixing plate is provided with a driving assembly, and the driving assembly includes a shell fixedly connected to the upper surface of the fixing plate, a motor fixedly connected to the bottom wall of the shell, and a motor fixedly connected to the motor.

[0014] Furthermore, a through opening adapted to the plug block is provided on the upper surface of the bracket, and an opening adapted to the shell is provided on the bottom of the bracket.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a quick pressing device for a screw bearing of an electric actuator, which has the following beneficial effects:

[0017] The electric actuator lead screw bearing quick clamping device has a simple clamping structure for installation and operation. The lead screw bearing can be quickly clamped and fixed through simple operation without complicated tools and steps. Sufficient space is reserved for the drive assembly so that the lead screw can be driven to rotate by the drive assembly, ensuring efficient transmission. The device has a simple structure, reasonable connection and coordination between the components, and is easy to maintain and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle A part;

[0020] Figure 3 It is a three-dimensional diagram of the bracket in the structure of the utility model.

[0021] In the figure: 1. bracket; 2. screw rod; 3. screw rod support; 4. sleeve plate; 5. connecting rod; 6. pressure plate; 7. plug block; 8. plug sheet; 9. sleeve; 10. magnetic block; 11. iron block; 12. telescopic rod; 13. spring; 14. slide plate; 15. slider; 16. fixing plate; 17. housing; 18. motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a quick clamping device for a screw bearing of an electric actuator, comprising a bracket 1, a screw 2, a screw support 3 rotatably connected to the upper and lower ends of the screw 2, a sleeve plate 4 fixedly connected to the left top and left bottom of the bracket 1, and a connecting rod 5 slidably connected to the inner side of the sleeve plate 4. The top end of the top connecting rod 5 is provided with a clamping structure for clamping the screw support 3.

[0024] like Figure 1 As shown, the clamping structure includes a pressing plate 6 fixedly connected to the top of the top connecting rod 5, an insert block 7 fixedly connected to the bottom of the pressing plate 6, an elastic component fixedly connected to the inner top wall of the insert block 7, and an insert piece 8 fixedly connected to the other side of the elastic component.

[0025] It should be noted that the left side wall of the bracket 1 is fixedly connected with a sleeve 9, the bottom end of the top connecting rod 5 is fixedly connected with a magnetic block 10 and is located on the inner side of the sleeve 9, the top end of the bottom connecting rod 5 is fixedly connected with an iron block 11 that matches the magnetic block 10 and is located on the inner side of the sleeve 9, the elastic component includes a telescopic rod 12 fixedly connected to the inner top wall of the plug block 7, a spring 13 arranged on the outside of the telescopic rod 12, and a slide plate 14 fixedly connected to the bottom end of the piston rod of the telescopic rod 12, and sliders 15 are fixedly connected to the left and right sides of the slide plate 14. The inner left side wall and the inner right side wall of the plug block 7 are provided with sliding grooves that match the sliders 15. There are two inserts 8, and the two inserts 8 are respectively located on the left and right sides of the telescopic rod 12, and the upper surface of the top screw support 3 is provided with two slots that match the inserts 8.

[0026] The bottom end of the bottom connecting rod 5 is fixedly connected with a fixing plate 16. The upper surface of the fixing plate 16 is provided with a driving assembly, which includes a housing 17 fixedly connected to the upper surface of the fixing plate 16, a motor 18 fixedly connected to the inner bottom wall of the housing 17, and a motor 18 fixedly connected to the motor 18. The output shaft of the motor 18 penetrates the inner top wall of the housing 17 and extends to the inner side of the center of the screw support 3 and is fixedly connected to the bottom end of the screw 2. The upper surface of the bracket 1 is provided with a through opening adapted to the plug block 7, and the bottom of the bracket 1 is provided with an opening adapted to the housing 17.

[0027] The working principle of the above embodiment is:

[0028] Insert the two connecting rods 5 into the sleeve 9, and the two connecting rods 5 are attracted to each other through the magnetic block 10 and the iron block 11, so as to position the two connecting rods 5. At the same time, the pressure plate 6 inserts the plug block 7 into the through-hole of the bracket 1, and the fixing plate 16 inserts the shell 17 into the opening of the bracket 1. Due to the elastic reset characteristics, the telescopic rod 12 and the spring 13 in the plug block 7 insert the plug piece 8 into the slot of the top screw support 3, so that the top screw support 3 is supported by the plug piece 8, and the shell 17 further supports the bottom screw support 3, so as to tighten the screw support 3. At the same time, the output shaft of the motor 18 is fixedly connected to the bottom end of the screw 2 to provide driving force for the screw.

[0029] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0030] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick pressing device for a screw bearing of an electric actuator, comprising a bracket (1), a screw (2), a screw support (3) rotatably connected to the upper and lower ends of the screw (2), a sleeve (4) fixedly connected to the left top and left bottom of the bracket (1), and a connecting rod (5) slidably connected to the inner side of the sleeve (4), characterized in that: The top end of the connecting rod (5) is provided with a clamping structure for clamping the screw rod support (3); The clamping structure comprises a pressing plate (6) fixedly connected to the top of the top connecting rod (5), an insert block (7) fixedly connected to the bottom of the pressing plate (6), an elastic component fixedly connected to the inner top wall of the insert block (7), and an insert sheet (8) fixedly connected to the other side of the elastic component.

2. The electric actuator screw bearing quick clamping device according to claim 1, characterized in that: The left side wall of the bracket (1) is fixedly connected to a sleeve (9), the bottom end of the top connecting rod (5) is fixedly connected to a magnetic block (10) and is located on the inner side of the sleeve (9), and the top end of the bottom connecting rod (5) is fixedly connected to an iron block (11) that matches the magnetic block (10) and is located on the inner side of the sleeve (9).

3. The electric actuator screw bearing quick clamping device according to claim 1, characterized in that: The elastic component comprises a telescopic rod (12) fixedly connected to the inner top wall of the plug block (7), a spring (13) arranged on the outside of the telescopic rod (12), and a slide plate (14) fixedly connected to the bottom end of the piston rod of the telescopic rod (12).

4. The electric actuator screw bearing quick clamping device according to claim 3, characterized in that: The left and right sides of the slide plate (14) are fixedly connected with sliding blocks (15), and the inner left wall and the inner right wall of the insert block (7) are both provided with sliding grooves adapted to the sliding blocks (15).

5. The electric actuator screw bearing quick clamping device according to claim 1, characterized in that: There are two inserting pieces (8), and the two inserting pieces (8) are respectively located on the left and right sides of the telescopic rod (12), and the upper surface of the screw rod support (3) at the top is provided with two slots adapted to the inserting pieces (8).

6. The electric actuator screw bearing quick clamping device according to claim 1, characterized in that: The bottom end of the connecting rod (5) is fixedly connected to a fixing plate (16), and the upper surface of the fixing plate (16) is provided with a driving assembly, and the driving assembly includes a shell (17) fixedly connected to the upper surface of the fixing plate (16), a motor (18) fixedly connected to the inner bottom wall of the shell (17), and a motor (18) fixedly connected to the motor (18).

7. The electric actuator screw bearing quick clamping device according to claim 1, characterized in that: The upper surface of the bracket (1) is provided with a through opening adapted to the plug block (7), and the bottom of the bracket (1) is provided with an opening adapted to the shell (17).

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