Dismounting device and method for walking speed reducer of ship unloader

Abstract

A dismounting device for a walking speed reducer of a ship unloader comprises a moving trolley, a lifting device is arranged on a frame of the trolley, a fixing frame is arranged at the rear end of the lifting device, a horizontal pushing piece is arranged on the fixing frame, and the horizontal pushing piece is provided with a pushing rod used for pushing a rotating shaft of the speed reducer. A limiting mechanism is arranged on the fixing frame and used for limiting forward movement of the speed reducer. The invention further provides a method for disassembling the walking speed reducer through the ship unloader walking speed reducer disassembling device. The welding mode adopted in the speed reducer dismounting process can be effectively avoided, the service life of an oil seal at the end of the shaft sleeve is prolonged, the working efficiency is improved, the speed reducer can be stably dismounted, and the phenomenon that the speed reducer shaft sleeve is cracked in the dismounting process is avoided.

Description

Technical Field

[0001] The invention relates to the field of reducer maintenance, and in particular to a disassembly device and a disassembly method for a travel reducer of a ship unloader. Background Art

[0002] Ship unloader is a large-scale lifting machinery equipment widely used in docks, responsible for water lifting operations. Travel reducer is an important part of ship unloader travel. Since ship unloader is in a marine corrosive environment for a long time, the service life of travel reducer equipment is relatively short and needs to be disassembled after the service life expires.

[0003] The traditional method of disassembling the reducer is to use a hydraulic jack placed between the axle bearing seat and the reducer because the gap between the travel reducer and the wheel axle of the ship unloader is too small. The reducer is removed under the action of the hydraulic jack. This method is prone to damage to the reducer body.

[0004] In addition, the Chinese invention patent "Method and Special Tool for Disassembling the Reducer of the Large Bridge Grab Ship Unloader" (application number 201610991120.1) discloses a special tool for disassembling the reducer of the large bridge grab ship unloader, including a trolley with adjustable height, on which a first base is provided; a bracket is provided on the first base, on which a vertically movable fixing device is provided, on which a horizontally arranged oil cylinder is provided, and a connecting piece is provided at the end of the oil cylinder, and a head is provided in the connecting piece, and the head is connected to the piston rod of the oil cylinder, and the end of the head can extend out of the connecting piece. The invention sets a connecting piece at the end of the oil cylinder, sets a head in the connecting piece, and the end of the connecting piece is welded to the shaft sleeve of the reducer, and the rotating shaft of the reducer is supported by the piston rod to separate the rotating shaft from the reducer. This invention patent welds the end of the connecting piece to the reducer sleeve. The high temperature generated during welding can easily cause damage to the oil seal at the end of the sleeve. In addition, during use, cracks can easily occur at the connection between the end of the connecting piece and the reducer sleeve, resulting in repeated welding construction, which can easily cause the reducer sleeve to crack. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a disassembly device and a disassembly method for a travel reducer of a ship unloader.

[0006] The present invention proposes a disassembly device for a travel reducer of a ship unloader, comprising a mobile trolley, a lifting device is provided on the frame of the trolley, a fixed frame is provided at the rear end of the lifting device, a horizontal pushing member is provided on the fixed frame, and the horizontal pushing member includes a pushing rod for pushing a rotating shaft of the reducer forward; a limiting mechanism is provided on the fixed frame, and the limiting mechanism is used to limit the forward movement of the reducer.

[0007] Preferably, the limiting mechanism includes a first limiting component, the first limiting component includes a first limiting portion and a slide groove, the slide groove is fixed on the fixed frame, and the slide groove extends to both sides of the fixed frame along the left and right directions; the first limiting portion is movably arranged at both ends of the slide groove, and the first limiting portion can move closer to or away from each other along the slide groove.

[0008] Preferably, the first limiting portion includes a slider, a connecting rod and a stopper, the slider is movably arranged in the slide groove, one end of the connecting rod is fixedly connected to the slider, and the other end of the connecting rod is fixedly connected to the stopper, and the stopper can abut against the reducer housing.

[0009] Preferably, the end of the block is provided with an arc-shaped groove matching the reducer wheel end shaft sleeve, which is used to clamp the reducer wheel end shaft sleeve.

[0010] Preferably, the limiting mechanism also includes a second limiting component, the second limiting component includes a plurality of second limiting parts, one end of the second limiting part is connected to the reducer end sleeve, the other end of the second limiting part is connected to the fixed frame, and the second limiting parts are evenly distributed along the circumference of the horizontal pushing member.

[0011] Preferably, the fixed frame includes a side plate, the slide groove is attached to the side plate, first avoidance grooves are opened at both ends of the slide groove, and second avoidance grooves are opened on both sides of the side plate, the first avoidance groove and the second avoidance groove have the same opening direction and are on the same axis, the groove walls of the first avoidance groove and the second avoidance groove are in the same plane, and the connecting rod can move in the first avoidance groove and the second avoidance groove at the same time.

[0012] As described above, the method for disassembling a travel reducer of a ship unloader according to the present invention comprises the following steps:

[0013] During the stage of moving the trolley, the lifting device is moved to the bottom of the reducer, and the lifting device is adjusted so that the horizontal pusher and the shaft of the reducer are on the same axis;

[0014] During the installation of the second limiting member, the second limiting member is connected to the fixing frame and the reducer end sleeve respectively, and the positions of the horizontal pusher and the second limiting member are appropriately adjusted by moving the trolley;

[0015] In the stage of adjusting the first limiting member, the first limiting member is engaged with the reducer wheel end sleeve, and the end of the first limiting member is abutted against the reducer housing;

[0016] During the disassembly stage, the horizontal pusher is started to push the piston rod of the horizontal pusher axially, and the piston rod pushes the reducer shaft until the reducer is detached from the reducer shaft; then the lifting device is started to take over the reducer to complete the disassembly.

[0017] Preferably, the stage of adjusting the first limiting member specifically includes the following steps: moving the first limiting portion along the slide groove so that the stopper is engaged with the reducer wheel end bushing, and the stopper is abutted against the reducer outer wall.

[0018] As described above, the present invention relates to a ship unloader travel reducer disassembly device and a disassembly method, which have the following beneficial effects: the mobile trolley of the present invention is on a lifting device, and a fixed frame is provided on the lifting device, and a horizontal pusher and a limiting mechanism are provided on the fixed frame. The horizontal pusher and the limiting mechanism are lifted to a predetermined height by the lifting device, and the limiting mechanism is used to limit the forward movement of the reducer, and then the reducer shaft is pushed by the horizontal pusher until the reducer is separated from the shaft, thereby realizing the disassembly of the reducer. The present invention can effectively avoid the use of welding in the process of disassembling the reducer, increase the service life of the oil seal at the end of the sleeve, improve work efficiency, can stably disassemble the reducer, and avoid the reduction sleeve from being torn during the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the assembly structure provided by an embodiment of the present invention.

[0020] Figure 2 This is a left view of the assembly structure provided by an embodiment of the present invention.

[0021] Figure 3 A top view of the assembly structure provided by an embodiment of the present invention.

[0022] Figure 4 A cross-sectional view of an embodiment of the present invention is provided.

[0023] Figure 5 This is a front view of the first limiting member assembly structure provided in an embodiment of the present invention.

[0024] Figure 6 This is a left view of the first limiting member assembly structure provided in an embodiment of the present invention.

[0025] Figure 7 This is a right view of the first limiting member assembly structure provided in an embodiment of the present invention.

[0026] Figure 8 This is a front view of the side panel installation provided in an embodiment of the present invention.

[0027] Fig. 9 A left view of the side panel installation provided in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 100, trolley; 200, lifting device; 300, fixed frame; 310, side plate; 311, second avoidance groove; 400, horizontal pushing member; 500, reducer; 600, limiting mechanism; 610, first limiting member; 611, first limiting part; 612, slide groove; 6121, first avoidance groove; 613, slider; 614, connecting rod; 615, stopper; 616, groove; 620, second limiting member; 621, second limiting part; 700, reducer end sleeve. DETAILED DESCRIPTION

[0030] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0031] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0032] like Figures 1 to 9 As shown, the present invention provides a ship unloader travel reducer disassembly device, including a mobile trolley 100, a lifting device 200 is provided on the frame of the trolley 100, the lifting height and the landing accuracy deviation of the lifting device 200 are 1mm, and the rising height reaches 1-1.2m, a fixing frame 300 is provided at the rear end of the lifting device 200, and a horizontal pusher 400 is provided on the fixing frame 300, and the horizontal pusher 400 includes a push rod for pushing the shaft of the reducer 500 forward, and the pushing stroke of the horizontal pusher 400 is not less than 400mm; a limiting mechanism 600 is provided on the fixing frame 300, and the limiting mechanism 600 is used to limit the forward movement of the reducer 500. The horizontal pusher 400 can be selected from various existing linear top tools such as hydraulic cylinders, air cylinders or electric push rods.

[0033] Furthermore, the lifting device 200 includes a lifting bracket and a lifting bracket, the lifting bracket is fixed to the frame of the trolley 100, the lifting bracket is fixed to the lifting bracket, and the fixed frame 300 is arranged at the rear end of the lifting bracket in the vertical direction. The lifting bracket can drive the limiting mechanism 600 and the horizontal pusher 400 to move to a predetermined height, so that the horizontal pusher push rod and the reducer shaft are on the same central axis, and the limiting mechanism 600 constrains the reducer 500 to ensure that the reducer 500 does not move forward when the horizontal pusher 400 pushes the reducer shaft. The fixed frame 300 includes a side plate 310 and a bracket, the bracket is vertically fixed to the rear end of the lifting bracket, a plurality of reinforcing ribs are provided on the back of the side plate 310, and a plurality of mounting grooves adapted to the bracket are opened on the reinforcing ribs, and the side plate 310 is fixed to the bracket by welding through the mounting grooves. The horizontal pusher 400 is fixedly arranged on the side plate 310.

[0034] like Figures 1 to 4 As shown, the limiting mechanism 600 includes two first limiting components 610, the first limiting component 610 includes a first limiting portion 611 and a slide groove 612, the slide groove 612 is provided with a mounting groove, the slide groove 612 is fixed to the bracket through the mounting groove, the slide groove 612 is attached to the back of the side plate 310, and the slide groove 612 extends to both sides of the fixing frame 300 along the left and right directions; the first limiting portion 611 is movably arranged at both ends of the slide groove 612, and the first limiting portion 611 can move closer to or away from each other along the slide groove 612.

[0035] Furthermore, one end of the first limiting portion 611 is movably disposed in the slide groove 612, and the other end of the first limiting portion 611 is respectively in contact with the housing of the reducer 500 and the shaft sleeve at the wheel end of the reducer. A locking device (not shown in the figure) is also provided between the first limiting portion 611 and the slide groove 612. When the two first limiting portions are close to each other along the slide groove 612 so that the first limiting portions 611 are in contact with the front wall of the reducer housing, the first limiting portion 611 is locked by the locking device to ensure that the first limiting portion 611 does not move during the disassembly process of the reducer 500, and at the same time, the reducer 500 is prevented from moving forward.

[0036] like Figures 5 to 7 As shown, the first limiting portion 611 includes a slider 613, a connecting rod 614 and a stopper 615. The slider 613 is movably arranged in the slide groove 612. One end of the connecting rod 614 is fixedly connected to the slider 613, and the other end of the connecting rod 614 is fixedly connected to the stopper 615. The stopper 615 can abut against the housing of the reducer 500.

[0037] Furthermore, the stopper 615 is distributed radially along the connecting rod 614, and the outer side of the stopper 615 is fixedly connected to the inner side of the end of the connecting rod 614. The connection between the stopper 615 and the connecting rod 614 is fixed to the reinforcing rib to enhance the structural strength. The inner side of the stopper 615 is provided with an arc groove 616 that matches the wheel end sleeve of the reducer 500 and is used to lock the wheel end sleeve of the reducer 500.

[0038] like Figure 1 , Figure 3 and Figure 5 As shown, the limiting mechanism 600 also includes a second limiting member 620, and the second limiting member 620 includes four second limiting parts 621. One end of the second limiting part 621 is connected to the reducer end sleeve 700, and the other end of the second limiting part 621 is connected to the side plate 310. The second limiting parts 621 are evenly spaced along the circumference of the horizontal pushing member 400, so that the reducer 500 can be subjected to uniform and stable force during the disassembly process.

[0039] Specifically, the second limiting portion 621 can be a pull rod with threads at both ends. A mounting hole is provided on the side plate 310. One end of the pull rod is threadedly connected to the reducer end sleeve 700, and the other end of the pull rod can pass through the side plate and be fixed with a nut.

[0040] like Figures 5 to 9 As shown, first avoidance grooves 6121 are opened at both ends of the slide groove 612, and second avoidance grooves 311 are opened on both sides of the side plate 310. The first avoidance groove 6121 and the second avoidance groove 311 have the same opening direction and are on the same axis. The groove walls of the first avoidance groove 6121 and the second avoidance groove 311 are on the same plane. The connecting rod 614 can move in the first avoidance groove 6121 and the second avoidance groove 311 at the same time to avoid interference between the connecting rod 614 and the side plate 310 when moving along the slide groove 612.

[0041] The present invention provides a method for disassembling a travel reducer of a ship unloader travel reducer disassembly device, comprising the following steps:

[0042] During the stage of moving the trolley 100, the lifting device 200 is moved to the bottom of the reducer 500, the lifting device 200 is adjusted, the lifting bracket is driven to drive the lifting bracket to rise, and the lifting bracket drives the side plate 310 to rise to a predetermined height, so that the horizontal pusher 400 and the reducer shaft are on the same axis.

[0043] During the installation of the second limiting member 620, first remove the bolts on the reducer end sleeve 700 at intervals, install one end of the four second limiting parts 621 onto the reducer end sleeve 700, and then fix the other end of the second limiting part onto the side plate 310 through nuts, and adjust the positions of the horizontal pusher 400 and the second limiting member 620 appropriately by moving the trolley 100;

[0044] In the stage of adjusting the first limiting member 610, the first limiting members 610 located at both ends of the slide groove 612 are moved so that the block 615 is engaged with the reducer wheel end bushing along the radial direction of the connecting rod 614, and the block 615 is abutted against the reducer 500 housing along the axial direction of the connecting rod 614, and then the slider 613 is locked by the locking device to prevent the slider 613 from moving when the horizontal pushing member 400 pushes the reducer shaft, thereby causing the reducer to move forward as the piston rod of the horizontal pushing member is pushed down.

[0045] During the disassembly stage, the horizontal pusher 400 is started, so that the piston rod of the horizontal pusher 400 is pushed axially, and the piston rod pushes the reducer shaft until the reducer 500 is separated from the reducer shaft; then the lifting device 200 is started to receive the reducer 500, and the disassembly is completed.

[0046] In summary, the present invention relates to a ship unloader travel reducer disassembly device and disassembly method, which have the following beneficial effects: the mobile trolley of the present invention is on a lifting device, and a fixed frame is provided on the lifting device, and a horizontal pushing member and a limiting mechanism are provided on the fixed frame. The horizontal pushing member and the limiting mechanism are lifted to a predetermined height by the lifting device, and the limiting mechanism is used to limit the forward movement of the reducer, and then the reducer shaft is pushed by the horizontal pushing member until the reducer is separated from the shaft, thereby realizing the disassembly of the reducer. It effectively avoids the use of welding in the process of disassembling the reducer, prolongs the service life of the oil seal at the end of the sleeve, improves work efficiency, can stably disassemble the reducer, and avoids the phenomenon of cracking of the reducer sleeve during the disassembly process. The ship unloader travel reducer disassembly device saves about 54,000 yuan per year in specific use.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A ship unloader travel reducer disassembly device, characterized in that: The invention comprises a movable trolley (100), wherein a lifting device (200) is provided on the frame of the trolley (100), a fixing frame (300) is provided at the rear end of the lifting device (200), a horizontal pushing member (400) is provided on the fixing frame (300), and the horizontal pushing member (400) comprises a pushing rod for pushing the rotating shaft of a reducer (500) forward; and a limiting mechanism (600) is provided on the fixing frame (300), and the limiting mechanism (600) is used to limit the forward movement of the reducer (500).

2. The ship unloader travel reducer disassembly device according to claim 1, characterized in that: The limiting mechanism (600) comprises a first limiting component (610), wherein the first limiting component (610) comprises a first limiting portion (611) and a slide groove (612), wherein the slide groove (612) is fixedly arranged on the fixing frame (300), and the slide groove (612) extends to both sides of the fixing frame (300) along the left-right direction; the first limiting portion (611) is movably arranged at both ends of the slide groove (612), and the first limiting portion (611) can move towards or away from each other along the slide groove (612).

3. The ship unloader travel reducer disassembly device according to claim 2, characterized in that: The first limiting portion (611) includes a slider (613), a connecting rod (614) and a stopper (615); the slider (613) is movably arranged in the slide groove (612); one end of the connecting rod (614) is fixedly connected to the slider (613); the other end of the connecting rod (614) is fixedly connected to the stopper (615); and the stopper (615) can abut against the housing of the reducer (500).

4. The ship unloader travel reducer disassembly device according to claim 3, characterized in that: An arc-shaped groove (616) matching the wheel end shaft sleeve of the reducer (500) is provided at the end of the stopper (615) and is used to clamp the wheel end shaft sleeve of the reducer (500).

5. The ship unloader travel reducer disassembly device according to claim 1, characterized in that: The limiting mechanism (600) further comprises a second limiting component (620), wherein the second limiting component (620) comprises a plurality of second limiting portions (621), wherein one end of the second limiting portion (621) is connected to the reducer end sleeve (700), and the other end of the second limiting portion (621) is connected to the fixing frame (300), and the second limiting portions (621) are evenly distributed along the circumference of the horizontal pushing member (400).

6. The ship unloader travel reducer disassembly device according to claim 3, characterized in that: The fixing frame (300) comprises a side plate (310), the slide groove (612) is attached to the side plate (310), first avoidance grooves (6121) are provided at both ends of the slide groove (612), and second avoidance grooves (311) are provided on both sides of the side plate (310), the first avoidance groove (6121) and the second avoidance groove (311) have the same opening direction and are located on the same axis, the groove walls of the first avoidance groove (6121) and the second avoidance groove (311) are located in the same plane, and the connecting rod (614) can move in the first avoidance groove (6121) and the second avoidance groove (311) at the same time.

7. A method for disassembling a travel reducer of a ship unloader using the disassembly device according to any one of claims 2 to 6, characterized in that: The steps include: In the stage of moving the trolley (100), the lifting device (200) is moved to the bottom of the reducer (500), and the lifting device (200) is adjusted so that the horizontal pusher (400) and the reducer shaft are on the same axis; During the installation of the second limiting member (620), the second limiting member (620) is connected to the fixing frame (300) and the reducer end sleeve (700) respectively, and the positions of the horizontal pusher (400) and the second limiting member (620) are appropriately adjusted by moving the trolley (100); In the stage of adjusting the first limiting member (610), the first limiting member (610) is engaged with the reducer wheel end shaft sleeve, and the end of the first limiting member (610) is abutted against the reducer (500) housing; During the disassembly stage, the horizontal pushing member (400) is started, so that the piston rod of the horizontal pushing member (400) is pushed axially, and the piston rod pushes the reducer shaft until the reducer (500) is separated from the reducer shaft; then the lifting device (200) is started to receive the reducer (500), and the disassembly is completed.

8. The method for disassembling a travel reducer of a ship unloader according to claim 7, characterized in that: The stage of adjusting the first limiting member (610) specifically comprises the following steps: The first limiting portion (611) is moved along the sliding groove (612) so that the stopper (615) is engaged with the reducer wheel end shaft sleeve, and the stopper (615) is abutted against the outer wall of the reducer (500).

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