Press mounting and dismounting device for turbine product

Abstract

The utility model discloses a press mounting and dismounting device for a turbine product. The press mounting and dismounting device comprises a girder, a tray, a rotating shaft, an auxiliary rod, a grabbing arm, a first locking bolt, a limiting strip, a second locking bolt, a supporting arm, a third locking bolt, a fourth locking bolt, a rubber pad and a base. At least two straight arms are arranged on the tray, the two straight arms are symmetrical about the center of the through hole, and through grooves are formed in the straight arms. The rotating shaft sequentially penetrates through the threaded hole of the girder and the through hole of the tray and then is connected into the threaded hole of the base. And the two grabbing arms are respectively connected in the through grooves of the straight arms on the tray through the mounting holes and first locking bolts. The utility model solves the technical problems that the efficiency is low and the quality is poor when a diffuser and a rectifying window in a volute and a bearing assembled on a shaft are disassembled and the diffuser and the rectifying window are pressed in the conventional turbine product.

Description

TECHNICAL FIELD

[0001] The utility model belongs to turbine product assembly technical field, specifically is the pressure equipment and dismounting of diffuser, rectifier window in turbine product and bearing dismounting device. BACKGROUND

[0002] At present, the quality problem of the pressure equipment of turbine cooler product diffuser and rectifier window mainly lies in that the hammer is directly knocked for pressure equipment. The sealing ring of rectifier window or diffuser is easy to be damaged in the knocking process, which affects the sealing property of the product and increases some excess materials. In the dismounting process, the dismounting of diffuser and rectifier window mainly adopts screwdriver or heating mode, and the heating time is long and the screwdriver is easy to scratch the surface treatment layer of the product. The bearing dismounting currently uses pressure dismounting tool. For the turbine product with long service time, the tool cannot guarantee the quality consistency, and most bearings are directly scattered in the pressure dismounting process.

[0003] The current turbine product usually has the following three problems in the assembly and dismounting process.

[0004] 1. The pressure equipment of rectifier window or diffuser causes the damage of sealing ring;

[0005] 2. The dismounting of rectifier window or diffuser scratches the surface treatment layer of the product;

[0006] 3. When the bearing is dismounted, the bearing is easy to scatter in the dismounting process.

[0007] In summary, the pressure equipment and dismounting of diffuser and rectifier window and the dismounting of bearing of the existing turbine product have many technical defects, which causes the decline of product quality. SUMMARY

[0008] The utility model aims at providing a pressure equipment dismounting device of turbine product, simultaneously realizes the pressure equipment and dismounting of diffuser in turbine product, the pressure equipment and dismounting of rectifier window and bearing dismounting, solves the technical problem that the existing turbine product dismounts the diffuser and rectifier window in volute, assembles the bearing on the shaft and the pressure equipment and rectifier window exist when pressure equipment, and has low efficiency and poor quality.

[0009] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0010] A pressure equipment dismounting device of turbine product, comprising:

[0011] Base, the threaded hole is opened on the base;

[0012] Big beam, the big beam is located above the base, and at least three threaded holes are opened on the big beam;

[0013] A drag plate is arranged between the base and the girder, and a through hole without a screw thread is formed in the inner wall of the drag plate. At least two straight arms are arranged on the drag plate, and the two straight arms are symmetric about the center of the through hole. A through slot is formed in the straight arm.

[0014] A rotating shaft is arranged, and the surface of the rotating shaft comprises two sections of outer threads with opposite rotation directions and a circular ring between the two sections of outer threads with opposite rotation directions. The outer diameter of the circular ring is greater than the hole diameter of the through hole of the drag plate. One end of the rotating shaft passes through the through hole of the drag plate and the threaded hole of the girder in sequence. The other end of the rotating shaft extends into the threaded hole of the base, and the circular ring on the rotating shaft is in contact with the drag plate.

[0015] A grabbing arm is arranged on the grabbing arm and sequentially comprises a mounting hole, a limiting hole and a claw along the length direction of the grabbing arm. Two grabbing arms are connected to the through slot of the straight arm of the drag plate through the mounting hole and the first locking bolt.

[0016] A limiting strip is arranged, and a connecting hole and a limiting slot are formed in the limiting strip. The limiting strip is connected to the limiting hole of the two grabbing arms through the second locking bolt inserted into the connecting hole and the limiting slot.

[0017] A support arm is arranged, and a through hole is formed in the two support arms. The support arm is connected to the girder through the through hole in a sliding manner. A locking hole in communication with the through hole is formed in the support arm, and a third locking bolt is arranged in the locking hole.

[0018] A fourth locking bolt is arranged in the threaded hole of the girder.

[0019] As an option, the drag plate comprises a disc body, and a stepped through hole without a screw thread is formed in the center of the disc body. Four straight arms are arranged on the circumferential surface of the disc body in parallel to the same diameter line direction of the disc body. Two straight arms are arranged in parallel and at intervals to form a first group of straight arms, and the other two straight arms are also arranged in parallel and at intervals to form a second group of straight arms. The first group of straight arms and the second group of straight arms are symmetric about the center of the stepped through hole in the center of the disc body.

[0020] As an option, the rotating shaft further comprises a center and a through hole. The center is arranged on the axial end face of the rotating shaft, and the through hole is arranged on the other end of the rotating shaft away from the center. An auxiliary rod is arranged in the through hole.

[0021] As an option, a rubber pad is detachably arranged on the upper end face of the base.

[0022] As an option, a threaded shaft is arranged on the upper end face of the base. A threaded hole penetrating through the base is formed in the end face of the threaded shaft.

[0023] As an option, the press-fitting and dismounting device for turbine products further comprises an auxiliary nut, which is arranged on the rotating shaft and located on the same side of the girder and the drag plate.

[0024] Compared with the prior art, the utility model only uses a set of device to complete the press fitting, dismounting of rectifier window or diffuser and dismounting of bearing in turbine product, the device has high integration degree and wide application range.

[0025] Compared with the prior art, the utility model has the following characteristics:

[0026] (1) the relative movement between the base and the supporting arm is realized through the rotation shaft cooperating with the thread, so that the press fitting process between the volute and the rectifier window or the diffuser is completed, since only the force of the supporting arm pressing the rectifier window or the diffuser and the force of the base pressing the volute exist, without additional impact or knocking, the sealing structure of the rectifier window or the diffuser is not damaged, the quality and efficiency of the press fitting are ensured, the two threads with opposite rotation directions on the rotation shaft ensure that the base and the supporting arm can move relatively, on the other hand, the dismounting of the base is facilitated and the base is prevented from falling off during the press fitting process,

[0027] (2) the relative movement of the grab arm and the girder driven by the rotation shaft realizes the dismounting process, the contact position of the grab arm relative to the rectifier window or the diffuser is fixed and the force is uniform, so that the surface treatment layer of the rectifier window or the diffuser is not scratched, and the dismounting quality and efficiency are ensured;

[0028] (3) the circular ring of the rotation shaft and the tray do not rotate relatively during the dismounting process, but directly drive the tray to move linearly, the force direction is consistent with the axial direction of the rotation shaft, so that the integrity of the bearing during the dismounting process is ensured, the bearing is not disassembled, and the dismounting quality and efficiency are ensured;

[0029] (4) the two supporting arms can move relative to the girder, so that the relative position between the two supporting arms is adjusted;

[0030] (5) the two grab arms can move relative to the straight arm of the tray, so that the relative position between the two grab arms is adjusted, and the limiting strip can ensure that the distance between the claws at the ends of the grab arms is fixed. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is the press fitting and dismounting device of the turbine product in the utility model;

[0032] Figure 2 is a girder structure diagram;

[0033] Figure 3is Figure 2 bottom view and thread hole cross-sectional view of

[0034] Figure 4 is a drag plate structure diagram;

[0035] Figure 5 is Figure 4 top view of

[0036] Figure 6 is Figure 5 A-A cross-sectional view in

[0037] Figure 7 is a rotating shaft structure diagram;

[0038] Figure 8 is Figure 7 bottom view of

[0039] Figure 9 is an auxiliary nut structure diagram;

[0040] Figure 10 is Figure 9 A-A cross-sectional view in

[0041] Figure 11 is an auxiliary rod structure diagram;

[0042] Figure 12 is Figure 11 left view of

[0043] Figure 13 is a grab arm structure diagram;

[0044] Figure 14 is Figure 13 top view of

[0045] Figure 15 is a limiting strip structure diagram;

[0046] Figure 16 is Figure 15 top view of

[0047] Figure 17 is a support arm structure diagram;

[0048] Figure 18 is Figure 17 right view of

[0049] Figure 19 is Figure 17 top view of

[0050] Figure 20 is a rubber pad structure diagram;

[0051] Figure 21 is Figure 20 left view and cross-sectional view of

[0052] Figure 22 is the left view and sectional view of the base structure;

[0053] Figure 23 is Figure 22 the left view and sectional view of the base structure;

[0054] Figure 24 is the press-fitting use state diagram;

[0055] Figure 25 is the disassembly use state diagram;

[0056] In the figure: 1 - girder, 2 - drag plate, 3 - rotating shaft, 4 - auxiliary nut, 5 - auxiliary rod, 6 - grabbing arm, 7 - first locking bolt, 8 - limiting strip, 9 - second locking bolt, 10 - supporting arm, 11 - third locking bolt, 12 - fourth locking bolt, 13 - rubber pad, 14 - base. DETAILED DESCRIPTION

[0057] The utility model will be further described below in combination with the drawings and specific embodiments, but should not be understood as the scope of the subject matter described in the utility model is limited to the following embodiments, without departing from the above technical thought of the utility model, all kinds of modifications, replacements and changes made according to the ordinary technical knowledge and conventional means in the art are included in the scope of the utility model.

[0058] At present, the quality problem of press-fitting of diffuser and rectification window in turbine cooler product mainly originates from directly knocking press-fitting with a hammer. The sealing ring of rectification window or diffuser is easy to be damaged in the knocking process, which affects the sealing property of product and increases some excess substances. In the disassembly process, the disassembly of diffuser and rectification window mainly adopts screwdriver or heating mode, and the heating time is long and the screwdriver is easy to scratch the surface treatment layer of product. The disassembly of bearing currently uses press-disassembly tooling, and the tooling cannot guarantee the quality consistency for long-time used turbine products, and most bearings are directly scattered in the press-disassembly process.

[0059] Based on the above reasons, the utility model designs the press-fitting and disassembly device as Figure 1 shown in the figure, which comprises girder 1, drag plate 2, rotating shaft 3, auxiliary nut 4, auxiliary rod 5, grabbing arm 6, first locking bolt 7, limiting strip 8, second locking bolt 9, supporting arm 10, third locking bolt 11, fourth locking bolt 12, rubber pad 13 and base 14, wherein:

[0060] The structure of girder 1 is as Figure 2 and Figure 3As shown, the whole is a linear structure, which has three threaded holes, the middle one with larger diameter is used to assemble with the rotating shaft 3, and the other two with smaller diameter are used to install the fourth locking bolt 12, so as to limit the sliding stroke of the two support arms 10 on the girder 1.

[0061] The structure of the drag plate 2 is shown in Figure 4 , Figure 5 and Figure 6 , which includes a disc-shaped disc body and four straight arms on the circumferential surface of the disc body. The four straight arms are symmetrically arranged about the center of the disc body, and the center of the disc body has a stepped hole. The hole with smaller diameter is used to install the rotating shaft 3, and the hole with larger diameter is used for weight reduction. The four straight arms are all provided with through grooves for matching the first locking bolt 7 to install the grabbing arm 6. The grabbing arm 6 can slide left and right in the through groove to adjust the interval distance between the two grabbing arms 6.

[0062] The structure of the rotating shaft 3 is shown in Figure 7 and Figure 8 , which includes two sections of external threads with opposite rotation directions, and a circular ring (for example, a circular gasket) between the two sections of threads for driving the drag plate 2 to move. The left end of the rotating shaft 3 is a center structure, and the right end surface is provided with a through hole for installing the auxiliary rod 5. The two sections of external threads with opposite rotation directions are selected to avoid the base 14 from being accidentally separated from the rotating shaft 3 during the press fitting process.

[0063] The structure of the auxiliary nut 4 is shown in Figure 9 and Figure 10 , which is installed on the rotating shaft 3 and used for fine adjustment during the press fitting process. That is, when the base 14 is lifted to the end of the press fitting position by the auxiliary rod 5, the rotating shaft 3 is no longer rotated by the auxiliary rod 5, but is rotated by the auxiliary nut 4 to drive the rotating shaft 3 to lift the base 14 to complete the small amplitude press fitting.

[0064] The structure of the auxiliary rod 5 is shown in Figure 11 and Figure 12 , which is used to drive the rotating shaft 3 to rotate.

[0065] The structure of the grabbing arm 6 is shown in Figure 13 and Figure 14 , which is provided with an installation hole, a limiting hole and a claw along the length direction of the grabbing arm 6 in sequence. The two grabbing arms 6 are connected to the through grooves of the four straight arms of the drag plate 2 through the installation holes and the first locking bolt 7. The claw is a special structure for hooking parts during disassembly.

[0066] The structure of the limiting strip 8 is shown in Figure 15 and Figure 16 , which includes a connecting hole and a limiting groove for spacing locking of the two grabbing arms 6.

[0067] The structure of the support arm 10 is shown inFigure 17 , Figure 18 and Figure 19 As shown, the through hole on it is used for sliding installation on the main beam 1, and the threaded hole on it is used for the third locking bolt 11. By tightening the third locking bolt 11, the support arm 10 is fixed in a specific position on the main beam 1 to prevent it from moving further.

[0068] The structure of rubber pad 13 is as follows Figure 20 and Figure 21 As shown, it is placed directly on the surface of the base 14 to prevent damage to the surface of the turbine product during press-fitting.

[0069] The structure of base 14 is as follows Figure 22 and Figure 23 As shown, it has a threaded shaft with an internal threaded hole on its end face, which is used for the press-fitting process.

[0070] The following will describe the press-fitting and disassembly device of this utility model in detail in two parts: press-fitting method and disassembly method.

[0071] Methods for press-fitting diffusers or rectifier windows:

[0072] Place the vortex housing onto the rubber pad 13 on the upper surface of the base 14, ensuring that the threaded shaft of the base 14 passes through the nozzle of the vortex housing. Slide the two support arms 10 onto the beam 1 to adjust the distance to accommodate the size of the diffuser or rectifier window (i.e., the lower end of the support arm 10 can be stably pressed against the surface of the diffuser or rectifier window). Then, use the third locking bolt 11 to lock the position of the support arm 10 on the beam 1. Adjust the distance between the base 14 and the lower end of the support arm 10 by rotating the auxiliary rod 5 to press-fit the diffuser or rectifier window. It should be noted that the upper and lower sections of the rotating shaft 3 use opposite right-hand and left-hand threads to prevent the base 14 from disengaging from the rotating shaft 3 during rotation.

[0073] Methods for disassembling the diffuser or rectifier window:

[0074] Place the two support arms 10 on the end face of the vortex housing, and adjust the distance between the two gripping arms 6 on the beam 1 to hook the claws into the gap between the teeth of the rectifier window or diffuser. Then tighten the first locking bolt 7 and the second locking bolt 9. Adjust the distance between the two gripping arms 6 and the support arms 10 by rotating the auxiliary rod 5 (during this process, the two gripping arms 6 gradually move away from the lower end face of the support arm 10, i.e., the end face of the vortex housing), and finally remove the diffuser or rectifier window.

[0075] Methods for disassembling bearings:

[0076] Put two support arms 10 on the end face of the scroll casing; Put the top of the rotating shaft 3 against the center of the product shaft (i.e. the shaft on which the bearing to be disassembled is installed, to ensure the coaxiality of the subsequent disassembly, to prevent damage to the bearing and the shaft), adjust the claws of the two grab arms 6 to hook the bearing assembled on the shaft, and then lock the first locking bolt 7 and the second locking bolt 9; Adjust the distance between the two grab arms 6 and the girder 1 through the rotating auxiliary rod 5 (in this process, the grab arms 6 gradually approach the girder), and disassemble the bearing.

[0077] In the utility model, the rotating shaft 3 and the drag plate 2 can lift the grab arm 6 through non-rotation, so that the disassembly effect is achieved. The rotating shaft 3 achieves the press-fit effect through the upper and lower two sections of threads lifting the base 14.

[0078] Specifically, the implementation steps of the diffuser press-fit and disassembly, the rectification window press-fit and disassembly and the bearing disassembly of the turbine product are as follows:

[0079] The press-fit diffuser or rectification window includes the following steps:

[0080] Step one: according to Figure 1 The grab arm 6, the first locking bolt 7, the limiting strip 8 and the second locking bolt 9 are disassembled, and the final state is as shown in Figure 24 ;

[0081] Step two: place the scroll casing on the rubber pad 13 on the end face of the base 14, and the threaded shaft of the base 14 needs to pass through the nozzle of the scroll casing;

[0082] Step three: adjust the distance of the two support arms 10 on the girder 1, ensure that the ends of the two support arms 10 can press on the surface of the diffuser or rectification window, and lock the position of the two support arms 10 on the girder 1 using the first locking bolt 11;

[0083] Step four: keep the girder 1 stationary, lift the base 14 through the rotating auxiliary rod 5 to gradually approach the girder 1, press the diffuser or rectification window at the lower end of the support arm 10, and the base 14 presses the scroll casing through the rubber pad 13, so that the diffuser or rectification window is slowly pressed into the scroll casing, and since the upper and lower sections of the rotating shaft 3 are right-handed and left-handed opposite threads respectively, the base 14 is lifted while preventing the base 14 from being separated from the rotating shaft 3.

[0084] As an optional step, when fine adjustment of the press-fit position of the diffuser or rectification window in the scroll casing is needed, install the auxiliary nut 4 on the rotating shaft 3, keep the girder 1 stationary after visually observing that the diffuser or rectification window has been pressed into the scroll casing, and drive the rotating shaft 3 to slightly lift the base 14 by turning the auxiliary nut 4 with a wrench, to complete the fine adjustment of the press-fit position.

[0085] The disassembly of the diffuser or rectification window includes the following steps:

[0086] Step one: according toFigure 1 The rubber pad 13 and the base 14 are disassembled, and the final state is shown in Figure 25 ;

[0087] Step two: Place the two support arms 10 of the device on the end face of the scroll casing.

[0088] Step three: Hook the claws of the two grab arms 6 in the tooth gap of the diffuser or the rectifier window by adjusting the distance between the two grab arms 6, and then lock the first locking bolt 7 and the second locking bolt 9.

[0089] Step four: Adjust the distance between the two grab arms 6 and the lower end face of the support arm 10 by rotating the auxiliary rod 5, and disassemble the diffuser or the rectifier window.

[0090] The disassembly of the bearing includes the following steps:

[0091] Step one: According to Figure 1 disassemble the rubber pad 13 and the base 14, and the final state is shown in Figure 25 ;

[0092] Step two: Place the two support arms 10 on the end face of the scroll casing.

[0093] Step three: Top the center of the end face of the product shaft with the top of the end of the rotating shaft 3, adjust the claws of the two grab arms 6 to hook the bearing to be disassembled assembled on the product shaft, and then lock the first locking bolt 7 and the second locking bolt 9.

[0094] Step four: Shorten the distance between the two grab arms 6 and the girder 1 by rotating the auxiliary rod 5 to disassemble the bearing.

[0095] Those skilled in the art can make various adjustments to the present application according to actual conditions. The general principles defined in the present application can be implemented in other implementations without departing from the spirit. Therefore, the present application will not be limited to the structure shown in the specific embodiments, but will conform to the widest range consistent with the principles and characteristics set forth in the claims of the present application.

Claims

1. A press-fitting dismounting device of a turbine product, characterized by, The utility model relates to a kind of supporting device, including: Base (14), the threaded hole is opened on base (14); Big beam (1), big beam (1) is located above base (14), and at least three threaded holes are opened on big beam (1); Tray (2), tray (2) is between base (14) and big beam (1), and the through hole without thread is opened on inner wall of tray (2), and at least two straight arms are further provided on tray (2), and two straight arms are about the center of symmetry of through hole, and the slot is opened on straight arm; Rotary shaft (3), the surface of rotary shaft (3) includes two segments of opposite rotation outer thread and annular ring between two segments of opposite rotation outer thread, the outer diameter of annular ring is greater than the hole diameter of the through hole of tray (2), one end of rotary shaft (3) is sequentially passed through the through hole of tray (2) and the threaded hole of big beam (1), the other end of rotary shaft (3) extends into the threaded hole of base (14), and the annular ring on rotary shaft (3) is attached to tray (2); Grab arm (6), the mounting hole, the limit hole and the paw are sequentially provided on grab arm (6) and along the length direction of grab arm (6), two grab arms (6) are respectively connected in the slot of straight arm of tray (2) by mounting hole, first locking bolt (7); Limit strip (8), the connecting hole and the limit slot are opened on limit strip (8), and limit strip (8) is connected with the limit hole on two grab arms (6) by second locking bolt (9) inserted in connecting hole and limit slot respectively; Support arm (10), the through hole is opened on two support arms (10), and support arm (10) is slidably connected on big beam (1) by through hole, and the locking hole that communicates with through hole is further opened on support arm (10), and third locking bolt (11) is mounted in locking hole; Fourth locking bolt (12), fourth locking bolt (12) is mounted in the threaded hole of big beam (1).

2. A press-fit disassembly device for a turbine product according to claim 1, characterized in that: The tray (2) includes a disc body, the disc body is a disc and has a stepped through hole without thread in the center of the disc body, four straight arms are provided on the circumferential surface of the disc body in parallel to the same diameter line direction of the disc body, two straight arms of the four straight arms are parallel and spaced apart to form a first group of straight arms, and the other two straight arms are also parallel and spaced apart to form a second group of straight arms, and the first group of straight arms and the second group of straight arms are symmetric about the center of the stepped through hole in the center of the disc body.

3. A press-fit disassembly device for a turbine product according to claim 1, characterized in that: The rotary shaft (3) further includes a center and a through hole, wherein the center is located at an axial end surface of the rotary shaft (3), and the through hole is located at the other end of the rotary shaft (3) away from the center, and an auxiliary rod (5) is mounted in the through hole.

4. A press-fit disassembly device for a turbine product according to claim 1, characterized in that: The upper end surface of the base (14) is detachably mounted with a rubber pad (13).

5. The device for press mounting and dismounting of a turbine product according to claim 1, characterized in that: The upper end surface of the base (14) has a threaded shaft, and the end surface of the threaded shaft has a threaded hole penetrating through the base (14).

6. A press-fit disassembly device for a turbine product according to claim 1, characterized in that: The utility model further includes an auxiliary nut (4), which is mounted on the rotary shaft (3) and located on the same side of the big beam (1) and the tray (2).

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