A quick pressing device for screw rod bearing of electric actuator

Abstract

The utility model relates to electric actuator bearing installation technical field discloses a kind of electric actuator screw rod bearing quick pressing device, including upper plate and screw rod, screw rod is passed through upper plate by screwing mode, the upper side edge of screw rod is welded and fixed with the handle of outward extension, the bottom end of screw rod is rotatably connected with fixed plate by pivot, the bottom of fixed plate is provided with pressing plate, the middle position of fixed plate bottom is provided with stud, stud is screwed into the screw groove of the middle position of fixed plate and makes the pressing plate detachably installed in fixed plate bottom.The utility model technical scheme is connected above the bearing seat of different sizes by the connecting rod of adjustable spacing, and the pressing plate is driven by screw rod and presses down, and screw rod bearing is pressed into bearing seat, the size of screw rod bearing can be replaced and adapted, the purpose that different size screw rod bearing is quickly pressed and installed into bearing seat can be realized, and bearing inner and outer ring is avoided and is damaged unevenly stressed.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator bearing technology, specifically to a quick clamping device for electric actuator lead screw bearings. Background Technology

[0002] Electric actuators are indispensable actuators in process automation control systems, used in large quantities and with wide applications. The working principle of an electric actuator is to control the motor to drive the lead screw to rotate forward and backward. The lead screw drives the output shaft of the electric actuator to move up or down accordingly, thereby completing the opening or closing of the valve. The lead screw bearing is located at both ends of the ball screw, so that the lead screw can be rotatably connected to its end structure through the lead screw bearing. The lead screw bearing is usually pressed into the bearing housing for installation. Because the fit clearance between the lead screw bearing and the bearing housing is relatively small, it is not convenient to press the lead screw bearing into the bearing housing during installation.

[0003] Existing technology involves hammering the lead screw bearing into the bearing housing using tools. During this process, the vibration from the hammering can damage the lead screw bearing. Furthermore, when different types of lead screw bearings are hammered together, uneven stress on the inner and outer rings can easily lead to misalignment damage. Therefore, we propose a rapid clamping device for lead screw bearings in electric actuators. Utility Model Content

[0004] The purpose of this invention is to provide a quick clamping device for ball screw bearings in electric actuators. An adjustable-pitch connecting rod can be used to connect to bearing housings of different sizes. A pressure plate, driven by the ball screw, presses down to clamp the ball screw bearing into the bearing housing. The pressure plate can be replaced to fit the size of the ball screw bearing. This allows for convenient and quick clamping and installation of ball screw bearings of different sizes into the bearing housing, preventing damage due to uneven force on the inner and outer rings of the bearing, and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick clamping device for a lead screw bearing of an electric actuator, comprising an upper plate and a lead screw. The lead screw passes through the middle of the upper plate by a screw connection. An outwardly extending rotating handle is welded and fixed to the upper side of the lead screw. A fixed plate is rotatably connected to the bottom end of the lead screw via a rotating shaft. A pressure plate is provided at the bottom of the fixed plate. A stud is provided at the middle of the bottom of the fixed plate. The stud is screwed into a screw groove provided at the middle of the fixed plate, so that the pressure plate can be detachably installed at the bottom of the fixed plate. Connecting rods are vertically arranged on both sides of the lower part of the upper plate. A slider is welded and fixed to the top of the connecting rod. The slider is slidably placed in a sliding groove opened inside the upper plate on both sides. The sliding groove is parallel to the line connecting the top sliders of the two lead screws. A screw seat is rotatably connected to the bottom of the connecting rod via a rotating shaft. A screw is provided at the bottom of the screw seat.

[0006] By adopting the above technical solution, the device can be connected to bearing seats of different sizes via a screw at the bottom of an adjustable-pitch connecting rod. The pressure plate connected to the fixing plate at the end of the lead screw can also be replaced according to the size of the lead screw bearing, thus making it convenient to press the lead screw bearing into the bearing seat for bearings of different sizes.

[0007] Optionally, both the side surface of the fixing plate and the side surface of the pressure plate are provided with insertion holes, and multiple insertion holes are provided on the sides of both the fixing plate and the pressure plate.

[0008] By adopting the above technical solution, when it is necessary to remove the pressure plate, a pry bar can be inserted into the socket to lock the fixing plate and rotate the pressure plate, thereby facilitating the removal and installation of the fixing plate.

[0009] Optionally, a handle is fixed to the side surface of the upper plate, and the handle is fixed to the side of the upper plate by welding.

[0010] By adopting the above technical solution, when pressing down the lead screw bearing, the cylinder handle supports the upper plate.

[0011] Optionally, a hexagonal block is provided on the upper surface of the screw seat, and the hexagonal block is connected to the screw seat as an integral structure.

[0012] By adopting the above technical solution, using a wrench on the hexagonal block, it is easy to screw the screw at the bottom of the screw seat into the screw hole on the side of the bearing seat.

[0013] Optionally, a screw hole is provided at the middle position of the surface of the upper plate, and the lead screw is screwed through the screw hole and passes through the upper plate.

[0014] Optionally, the upper plate surface at the bottom of the slide groove is provided with a through-hole communicating with the slide groove, and the connecting rod passes through the through-hole into the slide groove.

[0015] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0016] 1. The technical solution of this application can be connected to bearing housings of different sizes by setting adjustable-spacing connecting rods, and the set pressure plate is driven by the lead screw to press down and press the lead screw bearing into the bearing housing. The pressure plate can be replaced to adapt to the size of the lead screw bearing, which can realize the purpose of conveniently and quickly pressing and installing lead screw bearings of different sizes into the bearing housing, and avoid damage caused by uneven force on the inner and outer rings of the bearing.

[0017] 2. The technical solution of this application provides insertion holes on the sides of both the fixing plate and the pressure plate, which allows for easy installation and removal when the pressure plate is removed for replacement. A pry bar can be inserted into the insertion hole to lock the fixing plate and rotate the pressure plate. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the electric actuator lead screw bearing quick clamping device of this utility model;

[0020] Figure 2 This is a schematic diagram showing the position and structure of the fixing plate and pressure plate of the quick clamping device for the lead screw bearing of the electric actuator of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the pressure plate and the fixing plate of the quick clamping device for the lead screw bearing of the electric actuator of this utility model;

[0022] Figure 4 This is a schematic diagram of the bottom of the upper plate and its internal structure of the quick clamping device for the lead screw bearing of the electric actuator of this utility model.

[0023] In the diagram: 1. Top plate; 11. Threaded opening; 12. Slide groove; 121. Through hole; 13. Handle; 2. Lead screw; 21. Fixing plate; 211. Stud; 22. Rotary handle; 3. Pressure plate; 31. Threaded groove; 4. Insertion hole; 5. Connecting rod; 51. Threaded seat; 511. Threaded rod; 512. Hexagonal block; 52. Slider. Detailed Implementation

[0024] Please see Figure 1-4 This utility model provides a technical solution: a quick clamping device for the lead screw bearing of an electric actuator, comprising an upper plate 1 and a lead screw 2.

[0025] In use, the upper plate 1 needs to be locked above the bearing seat where the lead screw 2 is installed. Connecting rods 5 are vertically arranged on both sides of the lower part of the upper plate 1, and sliders 52 are welded and fixed to the top of the connecting rods 5. The sliders 52 are slidably placed in the sliding grooves 12 opened inside the two sides of the upper plate 1. The sliding grooves 12 are parallel to the line connecting the top sliders 52 of the two lead screws 2. The surface of the upper plate 1 at the bottom of the sliding groove 12 is provided with a through hole 121 communicating with the sliding groove 12. The connecting rods 5 pass through the through hole 121 into the sliding groove 12. In use, the sliders 52 at the top of the connecting rods 5 slide in the sliding groove 12, which can change the distance between the two connecting rods 5, so that the distance between the connecting rods 5 can be adapted to the distance of the screw holes symmetrically arranged on the surface of bearing seats of different sizes.

[0026] The bottom of the connecting rod 5 is rotatably connected to a screw seat 51 via a pivot. A screw 511 is provided at the bottom of the screw seat 51. In addition, a hexagonal block 512 is provided on the upper surface of the screw seat 51. The hexagonal block 512 and the screw seat 51 are connected as an integral structure. When the spacing of the connecting rod 5 is adjusted to be the same as the spacing of the screw holes symmetrically set on the surface of the bearing seat, a wrench can be used to drive the screw seat 51 and the screw 511 at its bottom to rotate through the hexagonal block 512, so that the screw 511 can be screwed into the screw holes provided on both sides of the bearing seat, so that the connecting rod 5 is connected to the top of the bearing seat.

[0027] A screw hole 11 is provided in the middle of the surface of the upper plate 1. The lead screw 2 is screwed through the screw hole 11 and passes through the middle of the upper plate 1. An outwardly extending handle 22 is welded and fixed to the upper side of the lead screw 2. The lead screw 2 can be rotated with less effort by using the outwardly extending handle 22. The bottom end of the lead screw 2 is rotatably connected to a fixing plate 21 through a rotating shaft. A pressure plate 3 is installed at the bottom of the fixing plate 21. After the connecting rod 5 is connected above the bearing seat, the bearing of the lead screw 2 is first placed above the groove of the bearing seat. The handle 22 drives the lead screw 2 to rotate, causing the fixing plate 21 and the pressure plate 3 to lower and press against the upper surface of the bearing of the lead screw 2, so that the connecting rod 5 is in a tensioned state. The slider 52 is pressed against the inner surface of the slide groove 12 and locked in position.

[0028] A handle 13 is fixed to the side surface of the upper plate 1. The handle 13 is fixed to the side of the upper plate 1 by welding. After that, the bearing of the lead screw 2 can be supported without supporting the upper plate 1. Then, the lead screw 2 is rotated by the rotating handle 22 to drive the fixed plate 21 and the pressure plate 3 downward, so that the pressure plate 3 presses the bearing of the lead screw 2 into the groove of the bearing seat.

[0029] The aforementioned fixing plate 21 has a stud 211 at the bottom center, and the pressure plate 3 has a matching screw groove 31 at the top center. The pressure plate 3 can be detachably installed at the bottom of the fixing plate 21 by screwing the stud 211 into the screw groove 31 at the center of the fixing plate 21. When pressing and installing the lead screw 2 bearings of different sizes, the pressure plate 3 can be removed and replaced with a new pressure plate 3 of the appropriate size to ensure that the pressure plate 3 can press down the inner and outer rings of the lead screw 2 bearing and to avoid the diameter of the pressure plate 3 being larger than the diameter of the lead screw 2 bearing.

[0030] The side surfaces of the fixing plate 21 and the pressure plate 3 are also provided with insertion holes 4. There are multiple insertion holes 4 on the sides of the fixing plate 21 and the pressure plate 3. When it is necessary to remove the pressure plate 3, a pry bar can be inserted into the insertion hole 4 to lock the fixing plate 21 and rotate the pressure plate 3, thereby facilitating the installation and removal of the fixing plate 21.

[0031] In use, the distance between the two connecting rods 5 is adjusted according to the size of the bearing housing to be pressed into the lead screw 2, so that the distance between the two connecting rods 5 is equal to the alignment of two symmetrically arranged screw holes on the bearing surface. When adjusting the distance between the connecting rods 5, the slider 52 at the top of the connecting rod 5 slides in the groove 12 in the upper plate 1. Then, a wrench is used to drive the screw seat 51 to rotate through the hexagonal block 512, and the screw 511 at its bottom is screwed into the symmetrically arranged screw holes on the bearing surface, thus connecting the bottom of the connecting rod 5 to the bearing housing. Then, the lead screw 2 is driven to rotate through the handle 22, so that the bottom fixing plate 2... Lower the height of plate 1 and pressure plate 3, place the lead screw 2 bearing above the bearing housing, and make the bottom of pressure plate 3 touch the upper surface of the lead screw 2 bearing. Then, release the support for the lead screw 2 bearing, and support plate 1 with handle 13. Then, continue to drive the lead screw 2 to rotate through handle 22, and drive the fixing plate 21 and pressure plate 3 to continue to lower the height, and gradually press the lead screw 2 bearing into the bearing housing to achieve the pressing installation of the lead screw 2 bearing. Then, the screw 511 at the bottom of screw seat 51 can be unscrewed from the screw hole on the surface of the bearing housing in the same way, and the cover plate of the bearing housing can be installed. When clamping and installing bearings of other sizes for lead screw 2, two pry bars can be inserted into the insertion holes 4 on the sides of the fixing plate 21 and the pressure plate 3 respectively before installation. The fixing plate 21 is locked and the pressure plate 3 is rotated to unscrew the stud 211 from the screw groove 31. The pressure plate 3 is then removed and replaced with a pressure plate 3 of another size that matches the size of the lead screw 2 bearing to be clamped and installed. The stud 211 is then screwed into the screw groove 31 of the new pressure plate 3 to install the new pressure plate 3. Then the above operations can be performed to complete the clamping and installation of the lead screw 2 bearing.

Claims

1. A quick clamping device for a lead screw bearing of an electric actuator, comprising an upper plate (1) and a lead screw (2), characterized in that: The lead screw (2) passes through the middle of the upper plate (1) by screwing. An outwardly extending handle (22) is welded and fixed to the upper side of the lead screw (2). The bottom end of the lead screw (2) is rotatably connected to a fixing plate (21) through a rotating shaft. A pressure plate (3) is provided at the bottom of the fixing plate (21). A stud (211) is provided at the middle of the bottom of the fixing plate (21). The stud (211) is screwed into the screw groove (31) provided at the middle of the fixing plate (21), so that the pressure plate (3) can be detachably installed at the bottom of the fixing plate (21). The upper plate (1) has vertical connecting rods (5) on both sides below. A slider (52) is welded and fixed to the top of the connecting rod (5). The slider (52) is slidably placed in the sliding groove (12) opened inside the upper plate (1). The sliding groove (12) is parallel to the line connecting the top slider (52) of the two lead screws (2). The bottom of the connecting rod (5) is rotatably connected to a screw seat (51) through a rotating shaft. A screw (511) is provided at the bottom of the screw seat (51).

2. The electric actuator lead screw bearing quick clamping device according to claim 1, characterized in that: The side surfaces of the fixing plate (21) and the pressure plate (3) are provided with insertion holes (4), and multiple insertion holes (4) are provided on the sides of the fixing plate (21) and the pressure plate (3).

3. The electric actuator lead screw bearing quick clamping device according to claim 1, characterized in that: A handle (13) is fixed to the side surface of the upper plate (1), and the handle (13) is fixed to the side of the upper plate (1) by welding.

4. The electric actuator lead screw bearing quick clamping device according to claim 1, characterized in that: The upper surface of the screw seat (51) is provided with a hexagonal block (512), and the hexagonal block (512) is connected to the screw seat (51) as an integral structure.

5. The electric actuator lead screw bearing quick clamping device according to claim 1, characterized in that: A screw hole (11) is provided in the middle of the surface of the upper plate (1), and the lead screw (2) is screwed through the screw hole (11) and passes through the upper plate (1).

6. The electric actuator lead screw bearing quick clamping device according to claim 1, characterized in that: The surface of the upper plate (1) at the bottom of the slide (12) is provided with a through hole (121) that communicates with the slide (12), and the connecting rod (5) passes through the through hole (121) into the slide (12).

Images