Electric actuator worm gear dismounting device

Abstract

The utility model discloses a kind of electric actuators worm wheel dismounting device, including circular fixing disc, the two sides of the fixing disc are respectively provided with first handle and second handle, the extension line of the first handle and second handle coincides and all pass through the center of fixing disc, first clamping key post and second clamping key post that can be in-depth worm wheel dismounting hole inside are arranged on the fixing disc, the second clamping key post can reciprocate along fixing disc, and the center of fixing disc and first clamping key post are all located on the extension line of second clamping key post moving path;The utility model has the beneficial effect that: first clamping key post and second clamping key post are respectively sleeved into worm wheel dismounting hole, then by first handle and second handle rotating fixing disc, worm wheel disc can be driven to rotate, the quick dismounting of worm wheel can be realized;Second clamping key post can also reciprocate, and then adapt to worm wheel disc of different sizes, improve the application range of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler maintenance equipment, and in particular to an electric actuator worm gear disassembly device. Background Technology

[0002] Electric actuators are common equipment in power plant units. According to the requirements of the power plant maintenance program, electric actuators should undergo disassembly and overhaul on a regular basis. In the disassembly and overhaul of electric actuators, when performing steps such as inspecting the internal worm gear and worm and replacing the lubricating grease, the critical step of removing the worm gear (and installing the worm gear after maintenance) is unavoidable.

[0003] Because the center of gravity of the electric actuator is biased towards the motor side, the worm gear axis cannot be perpendicular to the ground. Currently, the following problems exist when disassembling and assembling the worm gear: During worm gear reassembly, the fit between the stroke drive crown gear and the worm gear drive teeth on the hollow shaft cannot be guaranteed. Improper fit during assembly often leads to bending of the stroke crown gear rod. A bent stroke shaft cannot be visually confirmed after reassembly, causing complete failure of the stroke mechanism during electric testing, posing a risk of motor burnout, and resulting in repetitive maintenance. Furthermore, current disassembly and assembly methods are time-consuming, labor-intensive, and inefficient. Due to the complex and confined environment of the site, and because of uneven force distribution and the worm gear's direction not being aligned with its gravitational force, the actuator worm gear often cannot be properly assembled. Additionally, manually handling the worm gear can cause equipment damage and injury if the operator loses their grip.

[0004] The patent application number "CN2202122635064.7" discloses "a reverse osmosis membrane housing end cap disassembly tool". Although it can quickly disassemble the reverse osmosis membrane housing end cap, the limiting hole of the tool is fixed and cannot be adapted to end caps of different shapes and sizes, which limits its application. Utility Model Content

[0005] The purpose of this utility model is to provide an electric actuator worm gear disassembly device, which can quickly disassemble and assemble the worm gear, and can be adapted to worm gears of different sizes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An electric actuator worm gear disassembly device includes a circular fixed plate. A first handle and a second handle are respectively provided on both sides of the fixed plate. The extension lines of the first handle and the second handle coincide and both pass through the center of the fixed plate. The fixed plate is provided with a first locking pin and a second locking pin that can penetrate into the worm gear disassembly hole. The second locking pin can reciprocate along the fixed plate, and the center of the fixed plate and the first locking pin are both located on the extension line of the movement path of the second locking pin.

[0007] Preferably, the first key post includes a first post and a second post located on the upper and lower sides of the fixed disk, respectively, and the diameter of the first post is smaller than the diameter of the second post.

[0008] Preferably, the second handle has a movable groove for the second key post to move, and the movable groove extends into the fixed plate.

[0009] Preferably, the second key post includes a fourth post and a third post extending from the movable groove, wherein the outer side of the third post is provided with a fastening part for fixing it in the movable groove.

[0010] Preferably, the outer side of the third column is provided with a threaded portion, which extends from the joint of the third column and the fourth column to the end of the third column. The height of the threaded portion is greater than the height of the second handle, and the fastening portion is a nut sleeved on the outer side of the threaded portion.

[0011] Preferably, the first column and the third column have the same diameter, and the second column and the fourth column have the same diameter.

[0012] Preferably, the first handle is provided with a first handle extension rod, and the second handle is provided with a second handle extension rod.

[0013] Preferably, the first handle, the first handle extension rod, the second handle, and the second handle extension rod are all rectangular.

[0014] Preferably, the first handle, the first handle extension rod, the second handle, and the second handle extension rod are all circular.

[0015] The beneficial effects of this utility model are as follows: 1. Insert the first and second key pins into the worm gear mounting and dismounting holes respectively. Then, by rotating the fixed plate with the first and second handles, the worm gear can be rotated, thus achieving quick mounting and dismounting of the worm gear. The second key pin can also move back and forth to adapt to worm gears of different sizes, thereby improving the application range of the equipment.

[0016] 2. The first key post has a first post and a second post. Correspondingly, the second key post has a third post and a fourth post, which can be adapted to the two sizes of worm gear mounting and dismounting holes on the worm gear disk.

[0017] 3. Both the first and second handles are equipped with extension rods, which can save the operator's physical strength and make the process of disassembling and assembling the worm gear easier and more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the mounting end face of the worm gear on the electric actuator. Figure 2 This is the front view of the device; Figure 3 This is a top view of the device; Figure 4 for Figure 3 A-A sectional view (the first handle is rectangular); Figure 5 for Figure 3 Sectional view A-A (the first handle is circular).

[0019] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] Example 1 like Figure 1 The diagram shows the mounting end face of the worm gear on the electric actuator. The worm gear and the worm gear disc 7 are integrally set. The outer wall of the worm gear disc 7 is provided with external threads. The actuator housing 6 is provided with an internal threaded hole for mounting the worm gear disc 7. The worm gear disc 7 is screwed into the actuator housing 6 by threads. In order to ensure that the worm gear disc 7 is tightened and to facilitate the removal of the worm gear disc 7, worm gear disassembly and assembly holes 71 are also evenly distributed on the worm gear disc 7.

[0022] like Figure 2 and Figure 3 As shown in the figure, the electric actuator worm gear disassembly device described in this embodiment includes a circular fixed plate 1. A first handle 3 and a second handle 4 are respectively provided on both sides of the fixed plate 1. The extension lines of the first handle 3 and the second handle 4 coincide and both pass through the center of the fixed plate 1. The fixed plate 1 is provided with a first locking pin 2 and a second locking pin 5 that can penetrate into the worm gear disassembly hole 71, and the center of the fixed plate 1 is located on the line connecting the first locking pin 2 and the second locking pin 5. In use, the first locking pin 2 and the second locking pin 5 are respectively inserted into the two worm gear disassembly holes 71, and then the first handle 3 and the second handle 4 are pushed in the opposite direction to rotate the fixed plate 1, thereby achieving the purpose of tightening the worm gear disc 7 onto the actuator housing 6 or removing it from the actuator housing 6.

[0023] In order to adapt to worm gear disks 7 of different sizes (as the size of the worm gear disk 7 changes, the distance between the two worm gear mounting and dismounting holes 71 corresponding to the first key post 2 and the second key post 5 will also change accordingly), the second key post 5 can reciprocate along the fixed disk 1, and the center of the fixed disk 1 and the first key post 2 are both located on the extension line of the movement path of the second key post 5, thereby realizing the adaptation to worm gear disks 7 of different sizes and improving the versatility of the equipment.

[0024] The second handle 4 has a movable groove 42 for the second key post 5 to move. The movable groove 42 extends towards the fixed plate 1 and enters the fixed plate 1. Figure 1 As shown, the second handle 4 and the fixed plate 1 are at the same height, so that the second key post 5 can move smoothly along the movable groove 42 within the second handle 4 and the fixed plate 1.

[0025] The second key post 5 includes a fourth post 52 and a third post 51 extending from the movable groove 42. The outer side of the third post 51 is provided with a fastening part 54 to fix it in the movable groove 42.

[0026] A threaded portion 53 is provided on the outer side of the third column 51. The threaded portion 53 extends from the joint of the third column 51 and the fourth column 52 towards the end of the third column 51. The height of the threaded portion 53 is greater than the height of the second handle 4. The fastening portion 54 is a nut sleeved on the outer side of the threaded portion 53, and the height difference between the threaded portion 53 and the second handle 4 is consistent with the thickness of the nut. The diameter of the fourth column 52 is greater than the diameter of the threaded portion 53, and the diameter of the threaded portion 53 is greater than the diameter of the third column 51. The width of the movable groove 42 is the same as or slightly larger than the diameter of the threaded portion 53, allowing it to pass through the movable groove 42 and enabling the second locking pin 5 to reciprocate along the movable groove 42. After moving to a suitable position, tightening the fastening portion 54 locks the second locking pin 5, after which the worm gear can be disassembled and assembled.

[0027] The first key post 2 includes a first post 21 and a second post 22 located on the upper and lower sides of the fixed plate 1, respectively. The diameter of the first post 21 is smaller than the diameter of the second post 22.

[0028] In this embodiment, the diameters of the first column 21 and the third column 51 are the same, and the diameters of the second column 22 and the fourth column 52 are the same. When the diameter of the worm gear mounting hole 71 is small, the first column 21 and the third column 51 located above the fixed plate 1 are selected; when the diameter of the worm gear mounting hole 71 is large, the second column 22 and the fourth column 52 located below the fixed plate 1 can be selected.

[0029] To make it easier to rotate the fixed disc 1, a first handle extension rod 31 is provided in the first handle 3, and a second handle extension rod 41 is provided in the second handle 4. The extension rods can be retracted into the handles when not in use and pulled out when needed. By using the lever principle, the operation process is made easier.

[0030] like Figure 4 and Figure 5As shown, in practical applications, the first handle 3, the first handle extension rod 31, the second handle 4, and the second handle extension rod 41 can all be set as rectangles or circles. Depending on the actual working conditions on site, they can also be set as a combination of rectangles and circles.

[0031] During assembly, the device can be assembled by first making a circular hole with the same diameter as the first column 21 on the fixed plate 1, then inserting the first locking pin 2 and welding it; then making a movable groove 42 at a position symmetrical to the center of the fixed plate 1 with respect to the first locking pin 2; then welding the first handle 3 to one side of the first locking pin 2 on the fixed plate 1, welding the second handle 4 to one side of the movable groove 42 on the fixed plate 1, then making an extension section of the movable groove 42 on the second handle 4, and inserting the second locking pin 5; then inserting the first handle extension rod 31 and the second handle extension rod 41 into the first handle 3 and the second handle 4 respectively.

[0032] In use, first select the appropriate key pins (first pin 21, third pin 51 or second pin 22, fourth pin 52) according to the diameter of the worm gear mounting / removing hole 71. Then, adjust the position of the second key pin 5 in the movable groove 42 according to the different dimensions of the worm gear disc 7. After adjustment, tighten the fastening part 54. Then, insert the two key pins into the two worm gear mounting / removing holes 71 respectively, and tighten the fixing disc 1 to achieve the mounting / removing of the worm gear.

[0033] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0035] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A worm gear disassembly device for an electric actuator, comprising a circular fixed plate, wherein a first handle and a second handle are respectively provided on both sides of the fixed plate, the extension lines of the first handle and the second handle coincide and both pass through the center of the fixed plate, characterized in that: The fixed disk is provided with a first key post and a second key post that can be inserted into the worm gear disassembly hole. The second key post can reciprocate along the fixed disk, and the center of the fixed disk and the first key post are both located on the extension line of the movement path of the second key post.

2. The electric actuator worm gear disassembly device according to claim 1, characterized in that, The first key post includes a first post and a second post located on the upper and lower sides of the fixed plate, respectively, and the diameter of the first post is smaller than the diameter of the second post.

3. The electric actuator worm gear disassembly device according to claim 1, characterized in that, The second handle has a movable groove for the second key post to move, and the movable groove extends into the fixed plate.

4. The electric actuator worm gear disassembly device according to claim 3, characterized in that, The second key post includes a fourth post and a third post extending from the movable groove. The outer side of the third post is provided with a fastening part to fix it in the movable groove.

5. The electric actuator worm gear disassembly device according to claim 4, characterized in that, The outer side of the third column is provided with a threaded part, which extends from the joint of the third column and the fourth column to the end of the third column. The height of the threaded part is greater than the height of the second handle. The fastening part is a nut sleeved on the outer side of the threaded part.

6. The electric actuator worm gear disassembly device according to claim 2, characterized in that, The first column has the same diameter as the third column, and the second column has the same diameter as the fourth column.

7. The electric actuator worm gear disassembly device according to claim 1, characterized in that, The first handle is provided with a first handle extension rod, and the second handle is provided with a second handle extension rod.

8. The electric actuator worm gear disassembly device according to claim 7, characterized in that, The first handle, the first handle extension rod, the second handle, and the second handle extension rod are all rectangular.

9. The electric actuator worm gear disassembly device according to claim 7, characterized in that, The first handle, the first handle extension rod, the second handle, and the second handle extension rod are all circular.

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