Positioning device for trailer axle repair

Abstract

The embodiment of the present invention provides a positioning device for repairing a trailer axle, including an alignment sleeve, a top sleeve and a fixing umbrella; wherein the alignment sleeve is mounted on the bearing seat in the replacement part and the outer port abuts against the top surface of the bearing seat in the replacement part, the inner port of the top sleeve is clamped on the outer port of the alignment sleeve, the end of the bearing in the replacement part passes through the outer port of the top sleeve, the fixing umbrella is threadedly connected with the end of the bearing in the replacement part, and the alignment sleeve and the bearing seat in the replacement part are tightened by the top sleeve; the inner port of the alignment sleeve is mounted on the bearing seat of the trailer axle, and a positioning long hole is provided on the alignment sleeve at a position flush with the bottom surface of the bearing seat in the replacement part. The solution provided by the embodiment of the present invention can quickly and accurately determine the cutting line; at the same time, the alignment sleeve can be directly mounted on the bearing seat of the trailer axle to ensure the coaxiality between the replacement part and the trailer axle, which greatly improves the repair efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of trailer axle repair equipment, and in particular to a positioning device for trailer axle repair. Background Art

[0002] During the use of trailer axles, since they need to bear large loads, they may break due to strength fatigue. The broken parts are mainly at the connection between the bearing and the bearing seat. After the break, the trailer axle needs to be repaired.

[0003] The traditional repair method is to measure the cutting position on the bearing seat of the trailer axle, cut at the cutting position, and weld the replacement part (including the integrated structure of the bearing seat and the bearing) to the cutting position to complete the repair. During the repair process, it is necessary to accurately measure the length of the bearing seat part in the replacement part on the original bearing seat. If the measurement is inaccurate, the overall length of the trailer axle will become longer or shorter after the repair.

[0004] In addition, during the welding process, it is necessary to ensure the coaxiality of the replacement part and the trailer axle. The traditional method is to insert a positioning device into the brake base plate of the trailer axle to adjust the coaxiality. Specifically, the positioning device includes a rotating shaft for inserting into the brake base plate, a support arm fixed at the end of the rotating shaft and at 90 degrees to the rotating shaft, and a clamp is fixed at the end of the support arm. When adjusting, the bearing of the replacement part is inserted into the clamp and tightened, and the coaxiality is adjusted by rotating the replacement part. However, when the trailer axle is broken, the brake base plate is often deformed due to collision, which will cause inaccurate coaxiality adjustment. Summary of the invention

[0005] In view of the above problems, an embodiment of the present invention provides a positioning device for repairing a trailer axle.

[0006] One aspect of the present invention provides a positioning device for repairing a trailer axle, comprising an alignment sleeve, a top sleeve and a fixing umbrella; wherein the alignment sleeve is mounted on the bearing seat in the replacement part and the outer port thereof abuts against the top surface of the bearing seat in the replacement part, the inner port of the top sleeve is clamped on the outer port of the alignment sleeve, the end of the bearing in the replacement part passes through the outer port of the top sleeve, and after the fixing umbrella is threadedly connected to the end of the bearing in the replacement part, the alignment sleeve and the bearing seat in the replacement part are tightened through the top sleeve; the inner port of the alignment sleeve is mounted on the bearing seat of the trailer axle, and a long positioning hole is provided on the alignment sleeve at a position flush with the bottom surface of the bearing seat in the replacement part.

[0007] Compared with the prior art, the beneficial effect of the present invention is that during the repair process, the alignment sleeve is firstly mounted on the bearing seat of the trailer axle, the outer port of the alignment sleeve is pressed against the top surface of the bearing seat of the trailer axle, and then a cutting line is drawn on the outer periphery of the bearing seat of the trailer axle along the positioning long hole. After cutting at the cutting line position, the replacement part is inserted from the inner port of the alignment sleeve, and after the bearing in the replacement part passes through the top sleeve, the fixing umbrella and the end of the bearing in the replacement part are tightened, so that the outer port of the alignment sleeve is pressed against the top surface of the bearing seat in the replacement part, and the assembly is completed. After that, the alignment sleeve is put on the bearing seat of the trailer axle, the bearing seat of the trailer axle and the bearing seat in the replacement part are pressed against each other and spot welded, and the positioning device is removed and full welding is performed to complete the repair; the distance from the positioning long hole to the outer port of the alignment sleeve is the length of the bearing seat in the replacement part. Therefore, when determining the cutting line, you only need to put the alignment sleeve on the bearing seat of the trailer axle to draw the cutting line, which is convenient and accurate; at the same time, the alignment sleeve is directly put on the bearing seat of the trailer axle to ensure the coaxiality between the replacement part and the trailer axle, which greatly improves the repair efficiency.

[0008] Optionally, tightening screws are arranged at circumferential intervals on the side wall of the alignment sleeve near the inner port, and a stepped hole structure that is compatible with the boss structure on the top surface of the bearing seat in the replacement part is arranged at the outer port of the alignment sleeve.

[0009] Optionally, the top sleeve includes a sleeve body and claws spaced apart at an inner port of the sleeve body.

[0010] Optionally, the fixing umbrella comprises an annular fixing disk, and a threaded sleeve is arranged on the inner side surface of the annular fixing disk, and the threaded sleeve is threadedly connected to the end of the bearing in the replacement part.

[0011] Optionally, it also includes a first center sleeve, a second center sleeve and an alignment rod; the first center sleeve is fixed on the outer side of the annular fixed plate, the second center sleeve is arranged at the unbroken bearing end in the trailer axle, and the alignment rod is inserted into the side of the first center sleeve and out of the second center sleeve.

[0012] Optionally, the annular fixing plate includes a first annular fixing plate and a second annular fixing plate fixedly connected by bolts, the threaded sleeve is arranged on the first annular fixing plate, and the first central sleeve is fixed on the second annular fixing plate

[0013] Optionally, calibration scales are provided at relative positions between the first annular fixing disk and the second annular fixing disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. In the drawings:

[0015] Figure 1 A schematic structural diagram of a positioning device for repairing a trailer axle provided by an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of the structure of an alignment sleeve in a positioning device for repairing a trailer axle provided by an embodiment of the present invention;

[0017] Figure 3 A schematic cross-sectional view of an alignment sleeve in a positioning device for repairing a trailer axle provided by an embodiment of the present invention;

[0018] Figure 4 A schematic structural diagram of a top sleeve in a positioning device for repairing a trailer axle provided by an embodiment of the present invention;

[0019] Figure 5 A schematic diagram of the structure of a fixed umbrella in a positioning device for repairing a trailer axle provided in an embodiment of the present invention.

[0020] Among them, there are an alignment sleeve 1, a top sleeve 2, a fixing umbrella 3, a replacement part 4, a trailer axle 5, a positioning long hole 6, a tightening screw 7, a stepped hole structure 8, a sleeve body 9, a claw 10, an annular fixing plate 11, a threaded sleeve 12, a first center sleeve 13, a second center sleeve 14, an alignment rod 15, a first annular fixing plate 16, a second annular fixing plate 17, a calibration scale 18, and a cutting line 19. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0022] See also Figure 1-Figure 5 A positioning device for repairing a trailer axle according to an embodiment of the present invention comprises an alignment sleeve 1, a top sleeve 2 and a fixing umbrella 3; wherein, the alignment sleeve 1 is sleeved on the bearing seat in the replacement part 4 and the outer port thereof abuts against the top surface of the bearing seat in the replacement part 4, the inner port of the top sleeve 2 is clamped on the outer port of the alignment sleeve 1, the end of the bearing in the replacement part 4 passes through the outer port of the top sleeve 2, and after the fixing umbrella 3 is threadedly connected with the end of the bearing in the replacement part 4, the alignment sleeve 1 and the bearing seat in the replacement part 4 are tightened through the top sleeve 2; the inner port of the alignment sleeve 1 is sleeved on the bearing seat of the trailer axle 5, and a positioning long hole 6 is opened on the alignment sleeve 1 at a position flush with the bottom surface of the bearing seat in the replacement part 4.

[0023] During implementation, tightening screws 7 are circumferentially spaced on the side wall of the alignment sleeve 1 near the inner port, and a stepped hole structure 8 that matches the boss structure on the top surface of the bearing seat in the replacement part 4 is provided at the outer port of the alignment sleeve 1; there can be four tightening screws 7, and the axes of the tightening screws 7 intersect on the axis of the alignment sleeve 1. When the alignment sleeve 1 and the bearing seat in the trailer axle 5 are clearance-matched, but a coaxiality error occurs due to the excessive clearance, the tightening screws 7 can be used to adjust and ensure the coaxiality; the outer port of the alignment sleeve 1 adopts a stepped hole structure, which can better adapt to the top surface shape of the bearing seat in the trailer axle 5 and the replacement part 4, thereby ensuring the accurate position of the cutting line.

[0024] The top sleeve 2 includes a sleeve body 9 and claws 10 arranged at intervals at the inner port of the sleeve body 9; there can be four claws 10, specifically including a clamping arm with a fan-shaped structure, and a clamping finger arranged at the outer end of the clamping arm and perpendicular to the clamping arm, that is, the clamping finger is an arc surface structure, which can better fit with the port of the alignment sleeve 1.

[0025] The fixing parachute 3 comprises an annular fixing plate 11 , on the inner side of which a threaded sleeve 12 is arranged, and the threaded sleeve 12 is threadedly connected to the end of the bearing in the replacement part 4 .

[0026] In one implementation, it also includes a first center sleeve 13, a second center sleeve 14 and an alignment rod 15; the first center sleeve 13 is fixed on the outer side of the annular fixed plate 11, the second center sleeve 14 is arranged at the unbroken bearing end of the trailer axle 5, and the alignment rod 15 is inserted from the side of the first center sleeve 13 and passes out from the second center sleeve 14; the first center sleeve 13 and the second center shaft 14 both include an annular disk and a sleeve connected to the annular disk, the inner hole of the annular disk is the same as the inner hole of the sleeve, and can be tightly fitted with the alignment rod 15, the outer diameter of the sleeve in the second center sleeve 14 is the same as the inner diameter of the bearing in the front 5 of the trailer, so that the second center sleeve 14 can be inserted into the bearing in the front 5 of the trailer; the alignment rod 15 can use a solid steel rod to ensure strength; the coaxiality can be further ensured by the alignment rod 15.

[0027] In implementation, the annular fixing plate 11 may include a first annular fixing plate 16 and a second annular fixing plate 17 fixedly connected by bolts, the threaded sleeve 12 is arranged on the first annular fixing plate 16, and the first center sleeve 13 is fixed on the second annular fixing plate 17; the second annular fixing plate 17 may be welded with a tightening nut for easy tightening by inserting an iron rod into the tightening nut when connecting with the bearing end in the replacement part.

[0028] A calibration scale 18 is provided at the relative position of the first annular fixing disk 16 and the second annular fixing disk 4; that is, the annular fixing disk 11 adopts a split structure, and the outer diameters of the first annular fixing disk 16 and the second annular fixing disk 17 are exactly the same. In this case, it can be used to detect whether the coaxiality of other repair methods meets the requirements. Specifically, the alignment sleeve 1, the top sleeve 2 and the first annular fixing disk 16 are fixed on the repaired bearing seat and the bearing in sequence, and the alignment rod 15 is inserted from the side of the first annular fixing disk 16 and passes out from the second center shaft sleeve 17 set at one end of the trailer axle. Then, the second annular fixing disk 17 is sleeved on the alignment rod 15. If the calibration scale 18 on the second annular fixing disk 17 cannot be aligned with the calibration scale 18 on the first annular fixing disk 16, it can be determined that the coaxiality does not meet the requirements.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A positioning device for repairing a trailer axle, characterized in that: It includes an alignment sleeve, a top sleeve and a fixing umbrella; wherein, the alignment sleeve is arranged on the bearing seat in the replacement part and the outer port abuts against the top surface of the bearing seat in the replacement part, the inner port of the top sleeve is clamped on the outer port of the alignment sleeve, the end of the bearing in the replacement part passes through the outer port of the top sleeve, and the fixing umbrella is threadedly connected with the end of the bearing in the replacement part, and then the alignment sleeve and the bearing seat in the replacement part are tightened through the top sleeve; the inner port of the alignment sleeve is arranged on the bearing seat of the trailer axle, and a long positioning hole is opened on the alignment sleeve at a position flush with the bottom surface of the bearing seat in the replacement part.

2. The trailer axle repair positioning device according to claim 1, characterized in that: Tightening screws are arranged at circumferential intervals on the side wall of the alignment sleeve near the inner port, and a stepped hole structure that matches the boss structure on the top surface of the bearing seat in the replacement part is arranged at the outer port of the alignment sleeve.

3. The trailer axle repair positioning device according to claim 1, characterized in that: The top sleeve comprises a sleeve body and claws which are arranged at intervals at the inner side port of the sleeve body.

4. The trailer axle repair positioning device according to claim 1, characterized in that: The fixed umbrella comprises an annular fixed disk, the inner side surface of which is provided with a threaded sleeve, which is threadedly connected with the end of the bearing in the replacement part.

5. The trailer axle repair positioning device according to claim 4, characterized in that: It also includes a first center sleeve, a second center sleeve and an alignment rod; the first center sleeve is fixed on the outer side of the annular fixed plate, the second center sleeve is arranged at the unbroken bearing end in the trailer axle, and the alignment rod is inserted into the first center sleeve side and out of the second center sleeve.

6. The trailer axle repair positioning device according to claim 5, characterized in that: The annular fixing plate comprises a first annular fixing plate and a second annular fixing plate which are fixedly connected by bolts, the threaded sleeve is arranged on the first annular fixing plate, and the first central sleeve is fixed on the second annular fixing plate.

7. The trailer axle repair positioning device according to claim 6, characterized in that: A calibration scale is arranged at a relative position between the first annular fixing disk and the second annular fixing disk.

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