Gearbox threaded sleeve repairing tool

Abstract

The utility model discloses a gear box thread insert repairing tool, which relates to the field of gear box thread insert repairing tools and comprises a left side plate and a right side plate, the left side plate and the right side plate are bilaterally symmetrically arranged, the bottoms of the left side plate and the right side plate are connected through a connecting plate, and a positioning device is arranged at the bottom of the connecting plate. The positioning device comprises a positioning hole formed in the connecting plate, a positioning sleeve is arranged below the connecting plate, the positioning sleeve and the positioning hole are coaxial, a positioning plug pin is arranged in the positioning sleeve and the positioning hole and penetrates through the positioning hole and the positioning sleeve, locking holes are formed in the two ends of the left side plate and the two ends of the right side plate respectively, and locking bolts are arranged in the locking holes. The method is used for repairing the gearbox threaded sleeve.

Description

Technical Field

[0001] The utility model relates to a gear box installation tool, in particular to a gear box screw sleeve repair tool. Background Art

[0002] The gearbox is set at the bottom of the rail vehicle. The screw sleeve on the gearbox is used to install the gearbox hanger. The gearbox hanger is an important component used to fix the gearbox. The gearbox is connected to the bogie at the bottom of the vehicle through the hanger. When the screw sleeve at the hanger of the gearbox body is damaged, it is necessary to repair and replace the screw sleeve in time, otherwise the hanger cannot fix the gearbox body, which poses a great safety hazard and causes safety accidents.

[0003] If the screw sleeve is damaged and the boom cannot be installed, the vehicle usually needs to be shut down, the gearbox removed from the vehicle bogie, and the gearbox returned to the manufacturer to replace the box or screw sleeve. This will result in high costs for shutting down the vehicle, removing the gearbox from the bogie, and transportation.

[0004] In the prior art, when the screw sleeve on the gear box is damaged, the original screw sleeve is first removed, and then a drill is used to expand the hole, a reamer is used to ream the hole, and then a new screw sleeve is replaced; since there is no positioning tooling, the operation process has to rely entirely on personal feeling to drill and ream the holes, and during the drilling and reaming process, it cannot be guaranteed to be concentric with the original hole, so there is a high probability that the drilled or reamed hole will be eccentric or the center distance will change. In this case, the gear box will be scrapped, resulting in a series of economic losses.

[0005] The existing replacement method has high labor intensity for workers, complicated operation, low work efficiency, and cannot ensure the installation accuracy of the new screw sleeve. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the utility model provides a gear box screw sleeve repair tool which has a simple structure, is easy to install, improves work efficiency, and ensures installation accuracy.

[0007] The technical solution adopted by the utility model is:

[0008] A gear box screw sleeve repair tool,

[0009] It includes: a left side panel and a right side panel; the left side panel and the right side panel are symmetrically arranged;

[0010] The bottoms of the left side plate and the right side plate are connected by a connecting plate;

[0011] A positioning device is provided at the bottom of the connecting plate;

[0012] The positioning device includes a positioning hole arranged on the connecting plate; a positioning sleeve is arranged under the connecting plate;

[0013] The positioning sleeve and the positioning hole are coaxial;

[0014] Positioning pins are arranged in the positioning sleeve and the positioning hole;

[0015] The positioning pin passes through the positioning sleeve and the positioning hole;

[0016] Locking holes are respectively arranged at both ends of the left plate and the right plate; locking bolts are arranged in the locking holes.

[0017] Preferably, the bottom of the connecting plate and both sides of the positioning sleeve are respectively provided with positioning sleeve locking screws;

[0018] The positioning sleeve is connected to the bottom of the connecting plate through the positioning sleeve locking screw.

[0019] Preferably, it comprises a lower tooling set, on which a step is arranged, and the diameter of the step is larger than the diameter of the positioning sleeve and the positioning hole on the connecting plate.

[0020] The beneficial effects of the utility model compared with the prior art:

[0021] The utility model discloses a gear box screw sleeve repair tool, which has a simple structure and is easy to install, reduces maintenance costs, ensures screw sleeve installation accuracy, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a gear box screw sleeve repair tool of the utility model;

[0023] Figure 2 It is a partial structural schematic diagram of the gear box screw sleeve repair tool and the gear box installation of the utility model;

[0024] Figure 3 The utility model is a schematic diagram of the structure of the lower sleeve tooling of the gear box screw sleeve repair tooling.

[0025] Description of the main components in the attached drawings:

[0026] In the figure:

[0027] 1. Left side panel 2. Right side panel

[0028] 3. Connecting plate 4. Positioning sleeve

[0029] 5. Positioning pin 6. Positioning sleeve locking screw

[0030] 7. Locking bolt 8. Gearbox left end cover

[0031] 9. Right side support rib plate 10. Driving rod

[0032] 11. Lower tooling set 12. Left side supporting rib plate. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0034] The two screw sleeves on the mounting holes of the hanger on the cast aluminum housing of the gear box may be damaged during the overhaul process. Once the screw sleeves are damaged, it is time-consuming and costly to replace the entire gear box. Conventional tools are used for repair on site, but the accuracy requirements cannot be met. The present utility model is produced in order to save costs.

[0035] By using the tooling of the utility model, it is only necessary to remove the suspension rod connecting the gear box and the bogie, and then repair can be carried out on the bottom of the vehicle, thus greatly saving the repair cost.

[0036] Attached Figure 1 and 2 It can be seen that a gear box screw sleeve repair tool,

[0037] It includes: a left side panel 1 and a right side panel 2; the left side panel 1 and the right side panel 2 are arranged symmetrically;

[0038] The bottoms of the left side plate 1 and the right side plate 2 are connected by a connecting plate 3;

[0039] A positioning device is provided at the bottom of the connecting plate 3;

[0040] The positioning device includes positioning holes arranged on the connecting plate 3, and the positioning holes include a left positioning hole and a right positioning hole; the center distance between the left positioning hole and the right positioning hole corresponds to the center distance between two screw sleeve holes for installing screw sleeves on the gear box, and the left positioning hole and the right positioning hole are respectively arranged on both sides of the connecting plate 3 near the left plate 1 and the right plate 2, and a positioning sleeve 4 is arranged below the connecting plate 3; the positioning sleeve 4 is arranged below the positioning hole; and the top end of the positioning sleeve 4 is connected to the connecting plate 3;

[0041] The positioning sleeve 4 and the positioning hole are coaxial;

[0042] The positioning sleeve 4 and the positioning hole are provided with a positioning pin 5;

[0043] The positioning pin 5 passes through the positioning sleeve 4 and the positioning hole; the front end of the positioning pin 5 passes through the upper end of the positioning hole; the front end of the positioning pin 5 is inserted into the screw sleeve hole;

[0044] The rear end of the positioning latch 5 is provided with a driving rod 10 or a rotating handle for driving the rotation of the positioning latch 5. The rear end of the positioning latch 5 is provided with a through hole in the radial direction, and the driving rod 10 is provided in the through hole.

[0045] Locking holes are respectively arranged at both ends of the left plate 1 and the right plate 2; locking bolts 7 are arranged in the locking holes.

[0046] The locking bolt 7 is a gearbox fixing part, which is used to fix the gearbox end cover and is used when repairing the screw sleeve.

[0047] Preferably, the bottom of the connecting plate 3 and both sides of the positioning sleeve 4 are respectively provided with positioning sleeve locking screws 6;

[0048] The positioning sleeve 4 is connected to the bottom of the connecting plate 3 via the positioning sleeve locking screw 6 .

[0049] like Figure 3 As shown, it includes a lower tooling 11, which is provided with a step, and the diameter of the step is larger than the diameter of the positioning sleeve 4 and the positioning hole on the connecting plate 3. The lower tooling 11 is a stepped shaft, and the front end of the lower tooling 11 is provided with an external thread, and the screw sleeve is connected to the front end of the lower tooling 11 through an internal thread. The step of the lower tooling 11 ensures the installation depth of the screw sleeve and ensures the accurate installation position.

[0050] Use a drill with a step to expand the hole. When the drill step contacts the tooling step, it will not move further (the step is provided to ensure the expansion depth).

[0051] Use a stepped reamer to expand the hole. When the reamer step contacts the tooling step, it will not move further (the step is provided to ensure the reaming depth).

[0052] Use a chamfering cutter to chamfer the hole to facilitate the introduction of the screw sleeve during the installation process; use the lower sleeve tool 11 to install the new screw sleeve. Using the lower sleeve tool 11 is the last step, and the previous expansion, reaming, chamfering, etc. do not involve the use of the lower sleeve tool 11.

[0053] The main function of the positioning pin 5 is to ensure that the centers of the two holes on the connecting plate 3 correspond to the centers of the two holes on the box body, so that the drilling and reaming processes in the process of repairing the screw sleeve will not deviate the holes, thereby ensuring the accuracy of the processed holes.

[0054] The utility model discloses a gear box screw sleeve repair tool, which has a simple structure and is easy to install, reduces maintenance costs, ensures screw sleeve installation accuracy, and improves work efficiency.

[0055] The operating steps of the utility model gear box screw sleeve repair tool are as follows:

[0056] 1. The gear box is provided with two mutually parallel left supporting ribs 12 and right supporting ribs 9; the lower surfaces of the left supporting ribs 12 and the right supporting ribs 9 are respectively provided with machined surfaces; the machined surface is a plane on the box body connected to the suspension rod. After the suspension rod is installed, the suspension rod is perpendicular to the machined surface of the gear box, and the machined surface of the left supporting ribs 12 and the machined surface of the right supporting ribs 9 are each provided with a screw sleeve hole for fixing the suspension rod, and a screw sleeve is provided in the screw sleeve hole. The end of the suspension rod is threadedly connected with the screw sleeve, and the suspension rod installed on the gear box is removed; after the suspension rod on the gear box is removed, the machined surface of the left supporting ribs 12 and the machined surface of the right supporting ribs 9 each expose a screw sleeve hole provided with a screw sleeve, and the screw sleeve is damaged at this time. The tooling of the utility model is used to replace these two damaged screw sleeves.

[0057] 2. If Figure 2 As shown, the upper surface of the connecting plate 3 is fitted with the machined surface of the left supporting rib plate 12 and the machined surface of the right supporting rib plate 9, and the connecting plate 3 is positioned on the gear box body with two positioning pins 5. The positioning pin 5 is inserted from the lower end of the positioning sleeve 4, and the front end of the positioning pin 5 passes through the positioning sleeve 4 and the through hole of the connecting plate. The front end of the positioning pin 5 is provided with a thread, and the positioning pin 5 is connected to the screw sleeve hole by rotating the driving rod 10. At this time, the utility model tooling is initially positioned; the left side plate 1 is connected to the left end cover 8 of the gear box through two locking bolts 7, and the locking bolts are initially tightened; the right side plate is connected to the right end cover of the gear box through two locking bolts 7, and the locking bolts 7 are initially tightened. The left end cover 8 and the right end cover of the gear box are symmetrically arranged. The gap between the left side plate 1 and the outer surface of the left supporting rib plate 12 is filled with a plug; the gap between the right side plate 2 and the outer surface of the right supporting rib plate 9 is filled with a plug; the four locking bolts are finally tightened to complete the final fixation of the utility model tooling.

[0058] 3. Loosen and remove one of the positioning pins 5 by rotating the drive rod 10, insert a special tool from the lower end of the positioning sleeve 4, and remove the damaged screw sleeve from the screw sleeve hole.

[0059] 4. Use a pistol drill and special tools to expand, ream and chamfer the screw sleeve hole on the machined surface, and install the new screw sleeve in the reamed screw sleeve hole; the screw sleeve installation is guided by the lower sleeve tooling 11, which is also used to control the verticality of the screw sleeve. When the limit depth of the tooling is reached, the installation depth of the screw sleeve is met.

[0060] 5. Reinstall the loosened positioning pin 5. At this time, one of the screw sleeves has been replaced.

[0061] 6. Repeat steps 3 to 5 to complete the replacement of another screw sleeve.

[0062] The above is only a preferred embodiment of the utility model, and does not limit the structure of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model are within the scope of the technical solution of the utility model.

Claims

1. A gear box screw sleeve repair tool, characterized by: include: A left side plate (1) and a right side plate (2); the left side plate (1) and the right side plate (2) are arranged symmetrically; The bottoms of the left side plate (1) and the right side plate (2) are connected via a connecting plate (3); A positioning device is provided at the bottom of the connecting plate (3); The positioning device comprises a positioning hole arranged on the connecting plate (3); a positioning sleeve (4) is arranged below the connecting plate (3); The positioning sleeve (4) and the positioning hole are coaxial; A positioning pin (5) is provided in the positioning sleeve (4) and the positioning hole; The positioning pin (5) passes through the positioning hole and the positioning sleeve (4); Locking holes are respectively arranged at both ends of the left side plate (1) and the right side plate (2); locking bolts (7) are arranged in the locking holes.

2. The gear box screw sleeve repair tool according to claim 1, characterized in that: Positioning sleeve locking screws (6) are respectively provided at the bottom of the connecting plate (3) and on both sides of the positioning sleeve (4); The positioning sleeve (4) is connected to the bottom of the connecting plate (3) via the positioning sleeve locking screw (6).

3. The gear box screw sleeve repair tool according to claim 2, characterized in that: It comprises a lower tooling set (11), on which a step is provided, and the diameter of the step is greater than the diameter of the positioning sleeve (4) and the positioning hole on the connecting plate (3).

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