A kind of drum-shaped tooth outer gear ring dismounting device

Abstract

The utility model provides a kind of drum gear outer gear ring dismounting device, belong to the technical field of speed reducer maintenance, including fixed plate, fixed plate is fixed to the axial surface of outer gear ring by connecting mechanism;Two telescopic driving members are symmetrically provided at the both ends of the side of fixed plate towards outer gear ring, when the telescopic end of driving member is elongated, and positive thrust is applied to speed reducer body, fixed plate can be synchronously subjected to reverse thrust, linear motion is carried out along its axial by the reverse thrust to drive outer gear ring, to realize the dismounting of outer gear ring;The utility model can change traditional manual knock dismounting into mechanical thrust dismounting by the synergistic effect of telescopic driving member and fixed plate, avoid the problem of long time knocking due to assembly tightness too large, significantly reduce worker labor intensity, improve equipment maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer maintenance technology, specifically to a device for disassembling a drum-shaped external gear ring. Background Technology

[0002] In order to achieve high precision and high load-bearing capacity transmission systems, the reducers in the rolling mill workshop often need to be equipped with drum gear couplings at the output shaft. However, the external gear ring in the drum gear is the core component of the reducer transmission system. It operates under high load, alternating stress and high temperature environment for a long time, and is prone to failure problems such as tooth surface wear, fatigue pitting and mating surface damage. It is necessary to disassemble, repair or replace it regularly to ensure the transmission accuracy and operational reliability of the reducer.

[0003] Currently, the steel rolling workshop does not have specialized disassembly tools for disassembling the drum-shaped gear outer ring of the reducer. Instead, they generally use a manual hammering method: workers use hammers to continuously strike the outer wall of the drum-shaped gear outer ring, and the vibration causes the interference fit structure between the gear ring and the inner hole of the reducer to loosen, thereby achieving detachment.

[0004] However, relying solely on the mechanical vibrations generated by hammering for disassembly often results in situations where disassembly cannot be achieved even after hours of hammering due to excessive assembly tightness. Furthermore, prolonged hammering leads to extreme labor intensity for workers and affects equipment maintenance efficiency. Utility Model Content

[0005] In view of this, the present invention provides a drum-shaped toothed external gear ring disassembly device, which transforms the traditional manual knocking disassembly into mechanical thrust disassembly through the synergistic action of the telescopic drive component and the fixed plate, avoiding the problem of prolonged knocking caused by excessive assembly tightness, significantly reducing the labor intensity of workers and improving equipment maintenance efficiency.

[0006] To solve the above technical problems, this utility model provides a drum-shaped external gear ring disassembly device, including a fixing plate. The fixing plate is fixed to the axial surface of the external gear ring by a connecting mechanism, and the length of the fixing plate is greater than the outer diameter of the external gear ring. After the fixing plate is fixed, two telescopic drive components are respectively installed at the two ends of the fixing plate that extend towards the side of the external gear ring.

[0007] When the telescopic end of the drive component extends axially and applies a positive thrust to the reducer body, the fixed plate can simultaneously receive a reverse pull. This reverse pull is transmitted to the external gear ring through the connecting mechanism, driving the external gear ring to move linearly along its axial direction, thereby separating the external gear ring from the reducer body. This eliminates the need for workers to knock and disassemble, reducing the labor intensity of workers and improving equipment maintenance efficiency.

[0008] The driving component is a manual hydraulic jack. This manual hydraulic jack is a small hydraulic jack, and its light weight, combined with a high-strength fixing plate, can prevent damage to the fixing plate.

[0009] The connecting mechanism includes two insertion holes on both sides of the surface of the fixed plate. The two insertion holes are coaxially arranged with two threaded holes on the axial surface of the external gear ring. Bolts are inserted into the insertion holes. Tightening the bolts causes the threaded end of the bolts to engage with the straight threaded hole, thereby fixing the fixed plate to the axial surface of the external gear ring.

[0010] The geometric center of the fixed plate coincides with the axis of the external gear ring. The coaxial design ensures that the reverse thrust generated during disassembly is evenly distributed along the circumference of the external gear ring, avoiding local stress concentration caused by eccentric loads.

[0011] The hydraulic jack and the fixed plate are detachably connected, which facilitates maintenance of the hydraulic jack.

[0012] The hydraulic jack has a fixed support base. Two positioning slots are formed on both sides of the support base in the horizontal direction. A connecting frame is welded to the surface of the fixed plate at a position corresponding to the support base. Two through slots are formed on both sides of the connecting frame in the horizontal direction, corresponding to the positioning slots. Positioning pins are inserted into each of the two through slots. By passing the positioning pins through the through slots and inserting them into the positioning slots, the support base and the hydraulic jack are fixed to the connecting frame. The positioning pins and positioning slots are in a clearance fit to ensure no shaking. The hydraulic jack can be easily assembled and disassembled by pulling the positioning pins to insert or remove them from the positioning slots.

[0013] The end of the positioning post away from the positioning groove extends to both sides with extension blocks. Each extension block is equipped with a tension spring. One end of the tension spring is fixed to the surface of the extension block, and the other end of the tension spring is fixed to the surface of the connecting frame. The tension spring limits the positioning post and prevents it from falling out of the positioning groove. The design of the tension spring can limit the positioning post to a certain extent and prevent the positioning post from falling out of the positioning groove due to operator error.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0015] 1. The efficient and labor-saving disassembly method transforms traditional manual hammering disassembly into mechanical pushing disassembly through the synergistic action of telescopic drive components and fixed plates. This avoids the problem of prolonged hammering caused by excessive assembly tightness, significantly reduces the labor intensity of workers, and improves equipment maintenance efficiency.

[0016] 2. The precise mechanical transmission structure and the coaxial design of the fixed plate and the external gear ring ensure that the reverse tensile force is evenly distributed along the circumference of the external gear ring, effectively avoiding local stress concentration caused by eccentric loads and extending the service life of parts.

[0017] 3. Modular quick-release design: The detachable connection structure between the hydraulic jack and the fixed plate adopts a gap fit design of positioning column and positioning groove to realize quick disassembly and assembly, which facilitates equipment maintenance and replacement of vulnerable parts.

[0018] 4. Stable positioning guarantee: The tension spring limit device effectively prevents the positioning column from accidentally dislodging under normal working conditions, ensuring the installation stability of the hydraulic jack. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure after the fixing plate and the external gear ring of this utility model are fixed together;

[0021] Figure 3 This is a schematic diagram of the disassembled structure of the jack of this utility model;

[0022] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Fixing plate; 101. Insertion hole; 102. Bolt; 200. Jack; 300. Reducer body; 400. External gear ring; 401. Threaded hole; 500. Support base; 501. Positioning groove; 600. Connecting frame; 601. Positioning column; 602. Tension spring; 603. Extension block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figures 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0026] A drum-shaped toothed external gear ring disassembly device, such as Figure 1 and Figure 2As shown: It includes a fixing plate 100, which is fixed to the axial surface of the outer gear ring 400 by a connecting mechanism. The length of the fixing plate 100 is greater than the outer diameter of the outer gear ring 400. The connecting mechanism is used to fix the fixing plate 100 to the circumferential surface of the outer gear ring 400.

[0027] After the fixing plate 100 is fixed, its two ends extend outward to form a symmetrical structure, similar to a cantilever structure. The two ends of the fixing plate 100 extend outward and face the side of the external gear ring 400. Two telescopic drive components are installed at each end. The telescopic ends of the drive components are arranged along the axial direction of the output shaft of the reducer body 300. The drive component can be a hydraulic push rod, a pneumatic push rod, or a hydraulic jack 200.

[0028] When the telescopic end of the drive component extends axially and applies a positive thrust to the reducer body 300, the fixed plate 100 can be simultaneously subjected to a reverse pull. This reverse pull is transmitted to the outer gear ring 400 through the connecting mechanism, driving the outer gear ring 400 to move linearly along its axial direction, thereby realizing the separation of the outer gear ring 400 from the reducer body 300.

[0029] When it is necessary to disassemble the outer gear ring 400 with drum-shaped teeth, firstly, the fixing plate 100 is fixed to the axial surface of the outer gear ring 400 through the connecting mechanism. Then, the telescopic drive is operated so that its telescopic end extends along the axial direction of the output shaft of the reducer body 300. Its telescopic end contacts the outer wall surface of the reducer body 300 and applies a positive thrust. According to the principle of action and reaction, the fixing plate 100 is simultaneously subjected to a reverse thrust. This thrust is transmitted to the outer gear ring 400 through the connecting mechanism, driving the outer gear ring 400 to move linearly along the axial direction of the output shaft of the reducer body 300. As the drive continues to extend, the outer gear ring 400 gradually disengages from the inner hole mating surface of the reducer body 300 until it is completely disassembled. Thus, through the synchronous cooperation of the drive and the fixing plate 100, the outer gear ring 400 does not need to be disassembled by workers striking it, thereby reducing the labor intensity of workers and improving equipment maintenance efficiency.

[0030] During disassembly, to facilitate faster and smoother disassembly, workers may tap the outer gear ring 400 with a hammer to improve the disassembly effect.

[0031] Specifically, the driving component is a manual hydraulic jack 200. This manual hydraulic jack 200 is a small hydraulic jack 200. Its light weight, combined with the high-strength fixing plate 100, can prevent damage to the fixing plate 100.

[0032] Furthermore, the geometric center of the fixed plate 100 and the axis of the external gear ring 400 are located on the same central axis. The coaxial design ensures that the reverse thrust generated during disassembly is evenly distributed along the circumference of the external gear ring 400, avoiding local stress concentration caused by eccentric load.

[0033] according toFigure 1 and Figure 2 As shown, the axial surface of the external gear ring 400 has a plurality of threaded holes 401 distributed in a ring. The connecting mechanism includes two insertion holes 101 opened on both sides of the surface of the fixed plate 100. The two insertion holes 101 are coaxially arranged with the two threaded holes 401 on the axial surface of the external gear ring 400.

[0034] A bolt 102 is inserted into the insertion hole 101. After the bolt 102 is inserted, the bolt 102 is screwed in so that the end of the bolt 102 is threaded into the straight thread hole 401, thereby fixing the fixing plate 100 to the axial surface of the outer gear ring 400.

[0035] It is worth mentioning that most of the speed reducers in the workshop are of the same model, and their drum-shaped gears are also mostly of the same model and size. Therefore, most of them can be disassembled using the same specification of fixing plate 100.

[0036] If it is necessary to disassemble the external gear ring 400 with different outer diameters, since the insertion hole 101 and the threaded hole 401 do not correspond, you can choose to replace the fixing plate 100 and open the corresponding insertion hole 101 on the new fixing plate 100. Alternatively, you can choose to open multiple threaded holes 401 on the same fixing plate 100 to adapt to the external gear ring 400 with different outer diameters.

[0037] according to Figure 3 and Figure 4 As shown, the hydraulic jack 200 and the fixed plate 100 are detachably connected. This detachable connection allows the equipment to be modularly designed, making it easier to maintain the hydraulic jack 200.

[0038] Specifically, the base of the hydraulic jack 200 is fixedly equipped with a support seat 500, and two positioning grooves 501 of the same size and depth are opened on both sides of the horizontal direction of the support seat 500.

[0039] A U-shaped connecting frame 600 is welded to the surface of the fixing plate 100 at a position corresponding to the support base 500. Two through slots are opened on both sides of the connecting frame 600 in the horizontal direction, corresponding to the position of the positioning slot 501. Positioning pins 601 are inserted and inserted into the two through slots respectively. By passing the positioning pins 601 through the through slots and inserting them into the positioning slots 501, the support base 500 and the hydraulic jack 200 are fixed to the connecting frame 600. The positioning pins 601 and the positioning slots 501 are in clearance fit to ensure no shaking. The small gap between the two will not affect the levelness of the hydraulic jack 200 and will not cause the hydraulic jack 200 to tilt significantly, so that the disassembly work can be carried out smoothly.

[0040] When installing the hydraulic jack 200, align the support base 500 and place it into the connecting frame 600, ensuring that the positioning groove 501 coincides with the axis of the through groove. Then, insert the positioning pin 601 into the positioning groove 501. Since the positioning pin 601 passes through the through groove of the connecting frame 600 and the positioning groove 501, it can limit and fix the support base 500, thereby fixing the hydraulic jack 200 in place. If disassembly is required, pull the positioning pin 601 out of the positioning groove 501 to remove the limitation on the support base 500, thus allowing the hydraulic jack 200 to be disassembled, making the disassembly and assembly work more convenient.

[0041] Furthermore, the end of the positioning post 601 away from the positioning groove 501 extends to both sides with an extension block 603. A tension spring 602 is provided on the extension block 603. One end of the tension spring 602 is fixed to the surface of the extension block 603, and the other end of the tension spring 602 is fixed to the surface of the connecting frame 600. The tension spring 602 limits the positioning post 601 and prevents the positioning post 601 from falling out of the positioning groove 501.

[0042] When installing the jack 200, the positioning column 601 needs to be pulled first, causing the extension blocks 603 on both sides of the positioning column 601 to stretch the tension spring 602, thereby disengaging the end of the positioning column 601 from the inner side of the connecting frame 600 so that the support column can be inserted into the connecting frame 600. Then, the positioning column 601 is released, and the rebound force of the tension spring 602 will drive the positioning column 601 to reset, so that the positioning column 601 is inserted into the positioning groove 501 for limiting. Furthermore, through the design of the tension spring 602, the positioning column 601 can be limited to a certain extent, preventing the positioning column 601 from disengaging from the positioning groove 501 due to operator error.

[0043] It is worth mentioning that during disassembly, the reducer body 300 is in a stopped state and will not shake. Therefore, the tension spring 602 will not shake under normal conditions, making the position of the positioning column 601 more stable. Furthermore, the hydraulic jack 200 is small and lightweight, and the positioning column 601 and connecting frame 600 are strong enough to support the weight of the hydraulic jack 200, preventing damage to them.

[0044] It should be clarified that this utility model relates to the maintenance of speed reducers, and is mainly used to disassemble the outer gear ring 400 with drum-shaped teeth at the output shaft of the speed reducer. It should be noted that the outer gear ring 400 and the speed reducer body 300 are existing devices in the prior art. Since they are not the main technical features of this utility model, the model will not be limited here, nor will their structure be described in detail. Only the usage and installation position of the fixing plate 100 and the jack 200 will be described in detail.

[0045] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A device for disassembling a drum-shaped external gear ring, characterized in that: Includes a fixing plate (100), which is fixed to the axial surface of the external gear ring (400) by a connecting mechanism; The fixed plate (100) has two telescopic drive members symmetrically arranged at both ends facing the outer gear ring (400). When the telescopic end of the drive member extends and applies a positive thrust to the reducer body (300), the fixed plate (100) can be simultaneously subjected to a reverse thrust. Through this reverse thrust, the outer gear ring (400) is driven to move linearly along its axial direction, so as to realize the disassembly of the outer gear ring (400).

2. The drum-shaped external gear ring disassembly device as described in claim 1, characterized in that: The driving component is a hydraulic jack (200).

3. The drum-shaped external gear ring disassembly device as described in claim 1, characterized in that: The connecting mechanism includes two insertion holes (101) on both sides of the surface of the fixed plate (100), and the two insertion holes (101) are coaxially arranged with the two threaded holes (401) on the axial surface of the external gear ring (400); A bolt (102) is inserted into the insertion hole (101), and the end of the bolt (102) is screwed into the straight thread hole (401) to fix the fixing plate (100) to the axial surface of the external gear ring (400).

4. The drum-shaped external gear ring disassembly device as described in claim 3, characterized in that: The geometric center of the fixed plate (100) and the axis of the external gear ring (400) are located on the same central axis.

5. The drum-shaped external gear ring disassembly device as described in claim 2, characterized in that: The hydraulic jack (200) and the fixing plate (100) are detachably connected.

6. The drum-shaped external gear ring disassembly device as described in claim 5, characterized in that: The base of the hydraulic jack (200) is fixedly provided with a support seat (500), and two positioning grooves (501) are opened on both sides of the horizontal direction of the support seat (500). A connecting frame (600) is provided on the surface of the fixing plate (100) at a position corresponding to the support base (500). Two through slots are opened on both sides of the connecting frame (600) in the horizontal direction. Positioning pins (601) are respectively provided in the two through slots. By passing the positioning pins (601) through the through slots and inserting them into the positioning slots (501), the support base (500) and the hydraulic jack (200) are fixed to the connecting frame (600).

7. The drum-shaped external gear ring disassembly device as described in claim 6, characterized in that: The positioning post (601) extends to both sides from the end away from the positioning groove (501) and is provided with extension blocks (603). A tension spring (602) is provided on the extension block (603). One end of the tension spring (602) is fixed to the surface of the extension block (603), and the other end of the tension spring (602) is fixed to the surface of the connecting frame (600). The tension spring (602) limits the positioning post (601) and prevents the positioning post (601) from leaving the positioning groove (501).

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