Tool special for drilling of contact net strut flange plate
By designing a special tooling for drilling flanges with a rotatable connecting arm and a servo motor drive, the problem that existing drilling machines can only position round or square flanges individually has been solved, enabling flexible application and efficient drilling of flanges of different shapes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI KEMAO RAILWAY EQUIP TECH CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-21
AI Technical Summary
The existing fixtures for drilling machines can only be used to position and clamp round or square flanges, which has a limited range of applications and leads to increased processing costs.
A special tooling for drilling holes in the flange of the contact wire support was designed. By setting a rotatable first connecting arm and a second connecting arm on the shifting shaft, combined with a servo motor and a cylinder, flexible positioning and clamping of round and square flanges can be achieved. The V-mouth clamp and the push-moving sleeve roller are used for automatic centering and positioning.
It enables flexible application to flanges of different shapes, is easy to operate, improves drilling efficiency, and reduces processing costs.
Smart Images
Figure CN224144066U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drilling tooling technology, specifically a special tooling for drilling holes in the flange of a contact wire support. Background Technology
[0002] The overhead contact line support is the core support structure of the electrified railway power supply system. It provides stable mechanical load and spatial positioning for the overhead contact line. It is usually erected along the railway line and is responsible for fixing the overhead contact line suspension, support and positioning devices, bearing all mechanical loads and transferring them to the foundation. During the installation of the overhead contact line support, a flange is usually provided at its bottom. It is fixed in the designated position through the mounting holes on the flange to achieve a reliable support effect. In the process of manufacturing the flange, a drilling machine is usually used to make holes. Holes are made in the designated positions according to actual needs to facilitate subsequent installation.
[0003] However, during drilling, it was found that due to the variety of contact wire supports, including cylindrical and square supports, the flanges required vary depending on the type of support. Typically, circular supports have circular flanges at the bottom, while square supports have square flanges at the bottom. The fixing fixtures on commonly used drilling machines can usually only be used to position and clamp either circular or square flanges individually, resulting in limited applicability. Multiple sets of positioning fixtures are also required for subsequent use, increasing processing costs.
[0004] Therefore, it is necessary to provide a new special tooling for drilling holes in the flange of the contact wire support to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this utility model is to provide a positioning fixture that can be selected and used according to the shape of the flange, and a special fixture for drilling holes in the flange of the contact wire support.
[0006] To solve the above-mentioned technical problems, the special tooling for drilling flanges of contact wire support provided by this utility model includes: a tooling frame, a first U-shaped base fixedly installed at the bottom of the tooling frame, a first bidirectional threaded rod rotatably installed inside the first U-shaped base, two square sliding columns threaded on the first bidirectional threaded rod, the tops of the two square sliding columns passing through the tooling frame and slidably connected to the tooling frame, an I-shaped frame fixedly installed on the tops of the two square sliding columns, a shifting shaft rotatably installed inside the two I-shaped frames, a first connecting arm and a second connecting arm fixedly installed on the two shifting shafts, and the corresponding first connecting arms and second connecting arms are vertically distributed, a straight-edge clamp fixedly installed on the end side of the two first connecting arms, a V-shaped clamp fixedly installed on the end side of the two second connecting arms, a first servo motor fixedly installed on one outer wall of the first U-shaped base, and the output shaft of the first servo motor fixedly connected to one end of the first bidirectional threaded rod.
[0007] Preferably, a central support ring is fixedly installed on the top of the tooling stand.
[0008] Preferably, a second U-shaped base is fixedly installed at the bottom of the tooling frame, the second U-shaped base passes through the first U-shaped base and the two are perpendicularly distributed, a second bidirectional threaded rod is rotatably installed inside the second U-shaped base, two longitudinal sliding pieces are threaded on the second bidirectional threaded rod, two guide posts are fixedly installed on the top of each of the two longitudinal sliding pieces, the tops of the four guide posts pass through the tooling frame and are slidably connected to the tooling frame, and a pushing sleeve roller is rotatably sleeved on each of the four guide posts, and the four pushing sleeve rollers are all located above the tooling frame.
[0009] Preferably, a second servo motor is fixedly installed on one outer wall of the second U-shaped base. The output shaft of the second servo motor is fixedly connected to one end of the second bidirectional threaded rod. The top of the tooling stand is provided with four longitudinal sliding openings. The four guide posts pass through the four longitudinal sliding openings respectively and contact the inner wall of the corresponding longitudinal sliding opening.
[0010] Preferably, the bottom of each of the two first connecting arms and the two second connecting arms is provided with a locking groove. A boss is fixedly installed on the side of each of the two square sliding pillars that is close to each other. A locking slide bar is slidably installed on each of the two bosses. The top of each locking slide bar penetrates the tooling frame and does not contact the tooling frame. The top of each locking slide bar is inserted into the locking groove on each of the two first connecting arms. Two cylinders are fixedly installed at the bottom of the tooling frame. A common connecting rod is fixedly installed on the output shaft of each of the two cylinders. The connecting rod penetrates the two locking slide bars and is slidably connected to them. Both square sliding pillars are provided with clearance holes. The connecting rod penetrates the clearance holes but does not contact the inner wall of the clearance holes.
[0011] Preferably, the top of the tooling frame has two horizontal sliding openings, two square sliding columns pass through the two horizontal sliding openings respectively, and the two square sliding columns contact the inner walls of the two horizontal sliding openings respectively. Two locking sliding strips pass through the two horizontal sliding openings respectively, and neither of the two locking sliding strips contacts the inner wall of the corresponding horizontal sliding opening.
[0012] Preferably, two stop rods are fixedly installed on the bottom inner walls of both of the two C-shaped frames, and both of the second connecting arms are in contact with the corresponding stop rods.
[0013] Compared with related technologies, the special tooling for drilling holes in the flange of the contact wire support provided by this utility model has the following advantages:
[0014] This invention, by setting a first connecting arm and a second connecting arm on a rotatable transposition shaft, allows for the selection of either a straight-edge clamp or a V-shaped clamp by rotating the transposition shaft. This enables the positioning and clamping of both round and square flanges, broadening its applicability and providing greater flexibility in actual operation. Furthermore, the V-shaped design of the V-shaped clamp automatically positions the round flange in the center, while the four push rollers, in conjunction with the straight-edge clamp, can quickly position the square flange in the center, facilitating subsequent drilling operations. Attached Figure Description
[0015] Figure 1 A schematic diagram of a preferred embodiment of the special tooling for drilling holes in the flange of a contact wire support provided by this utility model;
[0016] Figure 2 This is a frontal planar structural diagram of the present invention;
[0017] Figure 3 This is a schematic diagram of the connection structure between the square sliding column and the boss in this utility model;
[0018] Figure 4 This is a schematic diagram showing the insertion state of the first connecting arm and the locking slide bar in this utility model;
[0019] Figure 5 This is a schematic diagram showing the disassembled state of the first connecting arm and the locking slide bar in this utility model;
[0020] Figure 6 This is an assembly diagram of the first connecting arm and the second connecting arm in this utility model;
[0021] Figure 7 This is a side sectional view of the present invention.
[0022] In the diagram: 1. Tooling stand; 2. First U-shaped base; 3. First bidirectional threaded rod; 4. Square sliding column; 5. C-shaped frame; 6. Transposition shaft; 7. First connecting arm; 8. Straight-edge clamp; 9. Second connecting arm; 10. V-shaped clamp; 11. Centered support ring; 12. Positioning groove; 13. Boss; 14. Positioning slide bar; 15. Cylinder; 16. Connecting rod; 17. Stop rod; 18. Second U-shaped base; 19. Second bidirectional threaded rod; 20. Longitudinal sliding plate; 21. Guide column; 22. Pushing roller. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Please refer to the following: Figures 1-7 The special tooling for drilling flanges of overhead contact line supports includes: a tooling frame 1, with a first U-shaped base 2 fixedly installed at the bottom of the tooling frame 1. A first bidirectional threaded rod 3 is rotatably installed inside the first U-shaped base 2, and two square sliding columns 4 are threaded onto it. A first servo motor is fixedly installed on one outer wall of the first U-shaped base 2, and its output shaft is fixedly connected to one end of the first bidirectional threaded rod 3. The tops of the two square sliding columns 4 penetrate the tooling frame 1 and are slidably connected to the tooling frame 1. An I-shaped frame 5 is fixedly installed on the top of each of the two square sliding columns 4, and a transposition mechanism is rotatably installed inside each of the two I-shaped frames 5. The rotating shaft 6 has a first connecting arm 7 and a second connecting arm 9 fixedly installed on each of the two rotating shafts 6. The corresponding first connecting arms 7 and second connecting arms 9 are vertically distributed. Straight edge clamps 8 are fixedly installed on the ends of the two first connecting arms 7, and V-mouth clamps 10 are fixedly installed on the ends of the two second connecting arms 9. The straight edge clamps 8 or V-mouth clamps 10 can be selected for positioning by rotating the rotating shaft 6, which is convenient to operate and improves applicability. In addition, a central support ring 11 is fixedly installed on the top of the tooling stand 1. The central support ring 11 has a small diameter and will not have much impact on the drilling operation.
[0025] In the above method, to center the square flange, a second U-shaped base 18 is fixedly installed at the bottom of the tooling stand 1. The second U-shaped base 18 passes through the first U-shaped base 2, and the two are perpendicularly distributed. A second bidirectional threaded rod 19 is rotatably installed inside the second U-shaped base 18, and two longitudinal sliding plates 20 are threaded onto it. A second servo motor is fixedly installed on one outer wall of the second U-shaped base 18, and its output shaft is fixedly connected to one end of the second bidirectional threaded rod 19. Two guide posts 21 are fixedly installed on the top of each of the two longitudinal sliding plates 20, and the tops of the four guide posts 21 all penetrate the tooling stand 1. It is slidably connected to the tooling stand 1. Each of the four guide columns 21 is rotatably fitted with a pusher roller 22. The four pusher rollers 22 are all located above the tooling stand 1. Through the operation of the second servo motor, the two longitudinal sliding plates 20 are brought closer to each other, so that the pusher rollers 22 can be used to push the square flange to the longitudinal center position. Then, with the clamping and positioning effect of the straight edge clamp 8, the centering and positioning operation of the square flange can be completed. In addition, four longitudinal sliding holes are opened on the top of the tooling stand 1. The four guide columns 21 pass through the four longitudinal sliding holes respectively and contact the inner wall of the corresponding longitudinal sliding hole to ensure that the guide columns 21 can move smoothly.
[0026] In this method, in order to fix the adjusted first connecting arm 7 or second connecting arm 9, a locking groove 12 is provided at the bottom of both first connecting arms 7 and both second connecting arms 9. A boss 13 is fixedly installed on the side of the two square sliding pillars 4 that are close to each other. A locking slide 14 is slidably installed on both bosses 13. The top of the two locking slides 14 passes through the tooling stand 1 and does not contact the tooling stand 1. The top of the two locking slides 14 is inserted into the locking groove 12 on the two first connecting arms 7 respectively. Two cylinders 15 are fixedly installed at the bottom of the tooling stand 1. The same connecting rod 16 is fixedly installed on the output shaft of the two cylinders 15. The connecting rod 16 passes through the two locking slides 14 and is slidably connected to the two locking slides 14. A clearance hole is provided on both square sliding pillars 4. The connecting rod 16 passes through the clearance hole and does not contact the inner wall of the clearance hole, so that there is no motion interference between them.
[0027] In this method, in order to ensure that both the square sliding column 4 and the locking sliding strip 14 can move smoothly and will not interfere with the tooling stand 1, two transverse sliding openings are opened on the top of the tooling stand 1. The two square sliding columns 4 pass through the two transverse sliding openings respectively, and the two square sliding columns 4 contact the inner walls of the two transverse sliding openings respectively. The two locking sliding strips 14 pass through the two transverse sliding openings respectively, and the two locking sliding strips 14 do not contact the inner walls of the corresponding transverse sliding openings.
[0028] In this method, in order to ensure that the first connecting arm 7 or the second connecting arm 9 is adjusted to the designated position, two stop rods 17 are fixedly installed on the bottom inner wall of the two U-shaped frames 5. In the initial state, the two second connecting arms 9 are in contact with the corresponding stop rods 17. In this state, the square flange can be positioned and clamped. When the first connecting arm 7 is in contact with the corresponding stop rod 17, it means that the round flange can be positioned and clamped, and the operation is flexible.
[0029] The working principle of the special tooling for drilling holes in the flange of the contact wire support provided by this utility model is as follows:
[0030] When it is necessary to position and clamp the square flange to be drilled, first place the square flange on the central support ring 11, then start the second servo motor in the forward direction. Its output shaft drives the second bidirectional threaded rod 19 to rotate, and the two longitudinal sliding plates 20 move towards each other. When the two push rollers 22 on one side contact one side of the square flange, they will push the square flange to move until the two push rollers 22 on the other side also contact one side of the square flange. Then, turn off the second servo motor. At this time, the square flange is in the longitudinal center position.
[0031] Subsequently, the first servo motor is started in the forward direction, and the first bidirectional threaded rod 3 rotates, causing the two square sliding columns 4 to move closer to each other. When one of the straight edge clamping pieces 8 first contacts one side of the square flange, the square flange moves horizontally by means of the rotating push roller 22 until the other straight edge clamping piece 8 also contacts one side of the square flange. Then the first servo motor is turned off. At this point, the horizontal centering operation of the square flange is completed. The square flange is now centered, and drilling can then be performed.
[0032] When the circular flange needs to be positioned and clamped, the output shaft of the telescopic cylinder 15 is first extended, and the connecting rod 16 descends with the two locking slides 14, eventually moving out of the locking groove 12 on the first connecting arm 7. Then, the two shifting shafts 6 are rotated. When the two first connecting arms 7 rotate to contact the corresponding stop rods 17, it means that the two V-mouth clamps 10 have been switched to the positioning position. Then, the output shaft of the telescopic cylinder 15 is retracted, and the two locking slides 14 are respectively brought into the locking grooves 12 on the two second connecting arms 9. Then, the circular flange is placed on the central support ring 11. Then, the first servo motor is started in the forward direction until the inner walls of the two V-mouth clamps 10 contact the circular flange, thus forming a positioning and clamping operation. At the same time, the circular flange is automatically in the central position, and drilling can then be performed.
[0033] Compared with related technologies, the special tooling for drilling holes in the flange of the contact wire support provided by this utility model has the following advantages:
[0034] This invention, by setting a first connecting arm 7 and a second connecting arm 9 on a rotatable transposition shaft 6, allows for the selection of either a straight-edge clamp 8 or a V-shaped clamp 10 by rotating the transposition shaft 6. This enables positioning and clamping of both round and square flanges, broadening its applicability and providing greater flexibility in actual operation. Furthermore, the V-shaped design of the V-shaped clamp 10 automatically positions the round flange in the center, while the four push rollers 22, in conjunction with the straight-edge clamp 8, can quickly position the square flange in the center, facilitating subsequent drilling operations.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A special tool for drilling the flange plate of a catenary support post, comprising a tool rack, characterized in that, A first U-shaped base is fixedly installed at the bottom of the tooling frame. A first bidirectional threaded rod is rotatably installed inside the first U-shaped base. Two square sliding columns are threaded onto the first bidirectional threaded rod. The tops of the two square sliding columns pass through the tooling frame and are slidably connected to it. An I-shaped frame is fixedly installed on the top of each of the two square sliding columns. A shifting shaft is rotatably installed inside each of the two I-shaped frames. A first connecting arm and a second connecting arm are fixedly installed on each of the two shifting shafts, and the corresponding first and second connecting arms are vertically distributed. Straight-edged clamps are fixedly installed on the ends of the two first connecting arms. V-shaped clamps are fixedly installed on the ends of the two second connecting arms. A first servo motor is fixedly installed on one outer wall of the first U-shaped base. The output shaft of the first servo motor is fixedly connected to one end of the first bidirectional threaded rod.
2. The catenary post flange drilling special tool according to claim 1, characterized in that, A central support ring is fixedly installed on the top of the tooling stand.
3. The catenary post flange drilling special tool according to claim 1, characterized in that, A second U-shaped base is fixedly installed at the bottom of the tooling stand. The second U-shaped base passes through the first U-shaped base and the two are perpendicular to each other. A second bidirectional threaded rod is rotatably installed inside the second U-shaped base. Two longitudinal sliding pieces are threaded on the second bidirectional threaded rod. Two guide posts are fixedly installed on the top of each of the two longitudinal sliding pieces. The tops of the four guide posts pass through the tooling stand and are slidably connected to the tooling stand. A pushing sleeve roller is rotatably sleeved on each of the four guide posts. The four pushing sleeve rollers are all located above the tooling stand.
4. The catenary post flange drilling special tool according to claim 3, characterized in that, A second servo motor is fixedly installed on one side of the outer wall of the second U-shaped base. The output shaft of the second servo motor is fixedly connected to one end of the second bidirectional threaded rod. The top of the tooling stand is provided with four longitudinal sliding holes. The four guide posts pass through the four longitudinal sliding holes and contact the inner wall of the corresponding longitudinal sliding holes.
5. The catenary post flange drilling special tool according to claim 1, characterized in that, Each of the two first connecting arms and the two second connecting arms has a locking groove at its bottom. Each of the two square sliding pillars has a boss fixedly installed on one side closest to each other. A locking slide bar is slidably installed on each of the two bosses. The tops of the two locking slide bars penetrate the tooling frame and do not contact the tooling frame. The tops of the two locking slide bars are respectively inserted into the locking grooves on the two first connecting arms. Two cylinders are fixedly installed at the bottom of the tooling frame. A common connecting rod is fixedly installed on the output shaft of the two cylinders. The connecting rod penetrates the two locking slide bars and is slidably connected to them. Each of the two square sliding pillars has a clearance hole. The connecting rod penetrates the clearance hole but does not contact the inner wall of the clearance hole.
6. The catenary post flange drilling special tool according to claim 5, characterized in that, The tooling stand has two horizontal sliding openings at the top. Two square sliding columns pass through the two horizontal sliding openings respectively, and the two square sliding columns contact the inner walls of the two horizontal sliding openings respectively. Two locking sliding strips pass through the two horizontal sliding openings respectively, and neither of the two locking sliding strips contacts the inner wall of the corresponding horizontal sliding opening.
7. The catenary post flange drilling special tool according to claim 1, characterized in that, Two stop levers are fixedly installed on the inner walls of the bottoms of the two U-shaped enclosures, and the two second connecting arms are in contact with the corresponding stop levers.