Locomotive conductive copper bar contact surface jacking and flattening device
By designing a top-pressure leveling device for conductive copper rows of harmonious electric locomotives, and using jack cylinders for cold pressing processing, the problem of poor flatness of the contact surface of the conductive copper rows is solved, and the contact surface uniformity and efficient flatness are achieved, and the contact surface is avoided. Care buildup.
Patent Information
- Application Number
- CN202420129363.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-18
AI Technical Summary
The prior art is difficult to effectively level the contact surfaces of the conductive copper rows of harmonious electric locomotives, resulting in uneven gaps between the contact surfaces, resulting in excessive heat and burning.
Design a conductive copper row contact surface top-pressing and flattening device including bottom plate, support plate, lifting device, mobile plate and top plate. Use the jack cylinder to drive the mobile plate to perform cold pressing processing of the conductive copper row to ensure that the contact surface is flat and pass through the guide. The set ensures linear movement of the moving plate.
It realizes efficient and flattening of the contact surface of the conductive copper strip, which is convenient to operate and high efficiency, avoids local heating caused by uneven gaps, and ensures the integrity of the copper strip.
Smart Images
Figure CN222198371U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conductive copper bar contact surface flattening, in particular to a conductive copper bar contact surface top pressing and flattening device for locomotives. Background Art
[0002] The Harmony electric locomotive uses the main transformer as the power source. The main transformer uses copper studs, conductive copper bars, and copper nuts to connect and output power. Since the main transformer has a large power, the current flowing through the copper nut is large. This places high demands on the gap between the nut and the conductive copper bar after the copper nut is tightened, requiring the gap around the contact surface to be uniform. At this time, the current flowing through the contact surface between the nut and the conductive copper bar is evenly distributed around the circumference, and will not generate excessive heat.
[0003] In actual use, if the surface of the conductive copper busbar is uneven, causing the gap between the conductive busbar and the copper nut to be uneven after the nut is tightened, a larger resistance will be generated at the location where the gap is large, which will cause excessive heat to be generated there, burning the copper nut and the conductive copper busbar and affecting the operation of the locomotive.
[0004] Due to the special shape of the conductive copper bars of Harmony electric locomotives and the huge number of copper bars on each locomotive, currently, most people use manual knocking to make the copper bar contact surface flat, which is time-consuming and labor-intensive and easily damages the copper bar contact surface. The flattening effect is average, and there is no existing forming equipment that can quickly and effectively process the copper bar contact surface to achieve a uniform and flat gap. Utility Model Content
[0005] Aiming at the problems existing in the prior art, the utility model provides a device for pressing and leveling the contact surface of a conductive copper bar of a locomotive.
[0006] The technical solution adopted by the utility model to solve the above technical problems is: a locomotive conductive copper bar contact surface top pressing and flattening device, comprising:
[0007] A bottom plate, with two supporting plates opposite to each other at its upper end, a lifting device disposed at the upper end of the bottom plate between the two supporting plates, a moving plate disposed at the upper end of the lifting device, and a first shaft-shaped protrusion matched with the mounting hole of the conductive copper bar disposed on the moving plate;
[0008] A top plate is located above the movable plate, and a second shaft-shaped protrusion matching the mounting hole is provided at the lower end of the top plate relative to the first shaft-shaped protrusion, and the sum of the lengths of the first shaft-shaped protrusion and the second shaft-shaped protrusion is less than the thickness of the conductive copper busbar. The top plate is connected to the support plate through a locking bolt, and a guide sleeve sliding through the movable plate is provided between the top plate and the support plate, and the guide sleeve is provided on the outside of the screw of the locking bolt, and the lifting device is used to drive the movable plate to move up and down.
[0009] As a preferred technical solution, each support plate is connected to the base plate via two fixing bolts.
[0010] As a preferred technical solution, each support plate is connected to the top plate via two locking bolts.
[0011] As a preferred technical solution, the length of the first shaft-shaped protrusion is 0.45 times the thickness of the conductive copper busbar.
[0012] As a preferred technical solution, the length of the second shaft-shaped protrusion is 0.45 times the thickness of the conductive copper busbar.
[0013] As a preferred technical solution, the lifting device is a jack cylinder, and the movable plate is arranged at the end of the piston rod of the jack cylinder.
[0014] As a preferred technical solution, a slot cooperating with the jack cylinder is provided on the upper end of the base plate.
[0015] The beneficial effects of the present application are as follows: 1. The jack cylinder of the present application drives the movable plate to rise, and the conductive copper busbar is pressed by the movable plate and the top plate, and then the contact surface of the conductive copper is cold pressed, which is easy to operate, the contact surface of the copper busbar is pressed flat, and the efficiency is high.
[0016] 2. The present application provides a guide sleeve to play a guiding role and ensure the straightness of the moving plate when it moves up and down.
[0017] 3. The difference between the sum of the lengths of the first shaft-shaped protrusion and the second shaft-shaped protrusion of the present application and the thickness of the conductive copper busbar is 1 mm. Even if the jack exceeds the stroke, it will not cause excessive extrusion to the conductive copper busbar. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model;
[0019] Figure 2 It is a structural schematic diagram of the movable plate of the utility model;
[0020] Figure 3 It is a top view of the movable plate of the utility model;
[0021] Figure 4 It is a structural schematic diagram of the top plate of the utility model;
[0022] Figure 5 This is a bottom view of the top plate of the utility model;
[0023] Figure 6 It is a schematic diagram of the first structure of the existing conductive copper busbar;
[0024] Figure 7 It is a second structural schematic diagram of the existing conductive copper busbar;
[0025] Markings in the figure: 1, top plate, 11, second shaft-shaped protrusion, 2, guide sleeve, 3, movable plate, 31, first shaft-shaped protrusion, 4, support plate, 5, lifting device, 6, bottom plate, 7, locking bolt, 8, fixing bolt, 9, conductive copper busbar, 91, mounting hole, 92, contact surface A, 93, contact surface B. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0027] See also Figure 1-5 The embodiment of the utility model provides a contact surface pressing and leveling device for a locomotive conductive copper bar, comprising a bottom plate 6 and a top plate 1, two supporting plates 4 are oppositely arranged at the upper end of the bottom plate 6, a lifting device 5 is arranged at the upper end of the bottom plate 6 between the two supporting plates 4, a movable plate 3 is arranged at the upper end of the lifting device 5, a first shaft-shaped protrusion 31 is arranged on the movable plate 3 to cooperate with the mounting hole 91 of the conductive copper bar 9, the top plate 1 is located above the movable plate 3, a second shaft-shaped protrusion 11 is arranged at the lower end of the top plate 1 to cooperate with the mounting hole 91 relative to the first shaft-shaped protrusion 31, the sum of the lengths of the first shaft-shaped protrusion 31 and the second shaft-shaped protrusion 11 is less than the thickness of the conductive copper bar 9, the top plate 1 is connected to the supporting plate 4 by a locking bolt 7, a guide sleeve 2 is arranged between the top plate 1 and the supporting plate 4 to slide through the movable plate 3, the guide sleeve 2 is sleeved on the outside of the screw of the locking bolt 7, and the lifting device 5 is used to drive the movable plate 3 to move up and down.
[0028] When the lifting device 5 does not drive the movable plate 3 to move upward, the lower end of the movable plate 3 contacts the upper end surface of the support plate 4. Figure 1As shown, each support plate 4 is connected to the base plate 6 by two fixing bolts 8, and each support plate 4 is connected to the top plate 1 by two locking bolts 7. A threaded through hole is provided on the support plate 4, and the fixing bolts 8 and the locking bolts 7 are threadedly matched with the threaded through holes. A first flat washer and a first spring washer are sleeved on the outer side of the screw rod of the fixing bolt 8, and the first flat washer and the first spring washer are located between the head of the fixing bolt 8 and the base plate 6. A second flat washer and a second spring washer are sleeved on the outer side of the screw rod of the locking bolt 7, and the second flat washer and the second spring washer are located between the head of the locking bolt 7 and the top plate 1. It should be noted that the parts not described in detail in this application are all prior art.
[0029] The length of the first shaft-shaped protrusion 31 is 0.45 times the thickness of the conductive copper busbar 9, the length of the second shaft-shaped protrusion 11 is 0.45 times the thickness of the conductive copper busbar 9, the difference between the sum of the lengths of the first shaft-shaped protrusion 31 and the second shaft-shaped protrusion 11 and the thickness of the conductive copper busbar 9 is 1 mm, that is, the difference between the sum of the lengths of the first shaft-shaped protrusion 31 and the second shaft-shaped protrusion 11 and the length of the mounting hole 91 is 1 mm, and the movable plate 3 and the top plate 1 are both steel plates.
[0030] Specific, combined Figure 6 and Figure 7 As shown, the conductive copper busbar 9 has a horizontal portion and a vertical portion, the mounting hole 91 is located on the horizontal portion, and the contact surface of the conductive copper busbar 9 includes a contact surface A 92 and a contact surface B 93, which are respectively located on the upper and lower end surfaces of the horizontal portion.
[0031] In addition, the outer diameters of the first axial protrusion 31 and the second axial protrusion 11 are slightly smaller than the inner diameter of the mounting hole 91, the lifting device 5 is a jack cylinder, the movable plate 3 is arranged at the end of the piston rod of the jack cylinder, and the upper end of the base plate 6 is provided with a slot that cooperates with the jack cylinder.
[0032] When the present application is used, before pressing, the horizontal part of the conductive copper bar 9 is inserted into the gap between the top plate 1 and the movable plate 3, and the mounting hole 91 in the conductive copper bar 9 is inserted into the first shaft-shaped protrusion 31 above the movable plate 3 to play a positioning role; then the jack cylinder is used to lift the movable plate 3 up, and the conductive copper bar 9 rises accordingly. Since the top plate 1 is fixed, the conductive copper bar 9 can only be squeezed by the top plate 1 and the movable plate 3, and the contact surface A 92 and the contact surface B 93 of the copper bar 9 can be squeezed and flattened, thereby achieving the purpose of flattening the contact surface of the conductive copper bar 9.
[0033] The flatness of the conductive copper busbar 9 after top pressing and flattening in the present application meets the requirements, and after being connected with the copper nut, the gap is uniform, which effectively avoids the local heating phenomenon caused by the uneven gap when a large current passes through.
[0034] When the jack cylinder continues to apply pressure, since the two bosses are already in contact, the pressure of the jack cylinder is transmitted by the two bosses. The jack cylinder will only have a 1mm top pressure stroke on the conductive copper bar 9 and will not squeeze the conductive copper bar 9 to a greater extent, thereby ensuring the integrity of the appearance of the conductive copper bar 9.
[0035] Of course, the present invention is not limited to the above-described implementations. Several other implementations based on the design concept of the present invention are provided below.
[0036] For example, in other embodiments, different from the above-described embodiments, the lifting device 5 may also be a hydraulic cylinder or an electric cylinder.
[0037] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model fall within the protection scope of the present utility model.
Claims
1. A device for pressing and leveling the contact surface of a locomotive conductive copper bar, characterized in that: include: A bottom plate (6) is provided with two supporting plates (4) at its upper end, the bottom plate (6) is provided with a lifting device (5) at its upper end between the two supporting plates (4), a movable plate (3) is provided at the upper end of the lifting device (5), and the movable plate (3) is provided with a first shaft-shaped protrusion (31) that cooperates with the mounting hole (91) of the conductive copper busbar (9); A top plate (1) is located above the movable plate (3); a second shaft-shaped protrusion (11) matching with the mounting hole (91) is provided at the lower end of the top plate (1) opposite to the first shaft-shaped protrusion (31); the sum of the lengths of the first shaft-shaped protrusion (31) and the second shaft-shaped protrusion (11) is less than the thickness of the conductive copper bar (9); the top plate (1) is connected to the support plate (4) via a locking bolt (7); a guide sleeve (2) slidingly penetrating the movable plate (3) is provided between the top plate (1) and the support plate (4); the guide sleeve (2) is sleeved on the outer side of the screw of the locking bolt (7); and a lifting device (5) is used to drive the movable plate (3) to move up and down.
2. The device for pressing and leveling the contact surface of a locomotive conductive copper bar according to claim 1, characterized in that: Each support plate (4) is connected to the base plate (6) via two fixing bolts (8).
3. The contact surface pressing and leveling device for a locomotive conductive copper bar according to claim 1, characterized in that: Each support plate (4) is connected to the top plate (1) via two locking bolts (7).
4. A locomotive conductive copper bar contact surface top pressing and flattening device according to claim 2 or 3, characterized in that: The length of the first shaft-shaped protrusion (31) is 0.45 times the thickness of the conductive copper busbar (9).
5. The contact surface pressing and leveling device for a locomotive conductive copper bar according to claim 4, characterized in that: The length of the second shaft-shaped protrusion (11) is 0.45 times the thickness of the conductive copper busbar (9).
6. A contact surface pressing and leveling device for a locomotive conductive copper bar (9) according to claim 5, characterized in that: The lifting device (5) is a jack cylinder, and the movable plate (3) is arranged at the end of the piston rod of the jack cylinder.
7. A locomotive conductive copper bar contact surface top pressing and flattening device according to claim 6, characterized in that: The upper end of the bottom plate (6) is provided with a slot that cooperates with the jack cylinder.
8. The contact surface pressing and leveling device for a locomotive conductive copper bar according to claim 1, characterized in that: The difference between the sum of the lengths of the first shaft-shaped protrusion (31) and the second shaft-shaped protrusion (11) and the thickness of the conductive copper busbar (9) is 1 mm.