A retractable roller type power receiving device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 黎明重工股份有限公司
- Filing Date
- 2025-08-01
- Publication Date
- 2026-06-09
AI Technical Summary
In the grinding mill production workshop, the power receiving device of the track-mounted electric flatbed cart suffers mechanical impact, jamming, and contact resistance fluctuations due to track misalignment, mechanical wear, and environmental changes, affecting the stable operation and lifespan of the equipment.
Design a retractable roller-type power receiving device, which adopts an elastic telescopic structure and rolling friction. The roller adapts to the misalignment of the conductive rail, and a spring provides stable downward pressure to ensure close contact with the conductive rail.
This achieves stable equipment operation and reduces frictional losses, extends equipment lifespan, reduces maintenance costs, and ensures stable power transmission.
Smart Images
Figure CN224335627U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of material conveying equipment, and in particular relates to a retractable roller-type power receiving device. Background Technology
[0002] In the current material transfer process in grinding mill production workshops, track-mounted electric flatbed carts serve as the core equipment for transferring large workpieces. Their power system relies on the sliding contact between the power receiving device and the conductive rails laid on the ground to obtain low-voltage electrical energy. However, numerous technical challenges exist in actual operation: due to factors such as workshop foundation settlement, accumulated tolerances in equipment installation, and thermal expansion and contraction caused by changes in ambient temperature, millimeter-level misalignment is prone to occur at the track joints. When the power receiving device passes through, it suffers mechanical impact and may even jam. In addition, the surface smoothness of the track is significantly reduced due to long-term mechanical wear and impacts, which not only accelerates abnormal wear of the power receiving device but also causes fluctuations in contact resistance, leading to frequent equipment shutdowns, significantly increasing maintenance costs, and severely restricting production efficiency and equipment lifespan. Utility Model Content
[0003] To address the technical problems existing in the prior art, this application provides a retractable roller-type power receiving device with elastic telescopic function, used to provide stable power transmission for rail-mounted electric flatbed carts. Through innovative design, it achieves dynamic and stable control of the power supply contact interface, effectively solving the existing technical problems and ensuring the long-term, efficient and stable operation of electric flatbed carts in the grinding mill production workshop.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A retractable roller-type power receiving device includes a fixed base, an insulating plate fixedly connected to one side of the fixed base, and a fixed sleeve with an open lower end fixedly connected to the outer side of the insulating plate; a guide rod is slidably embedded in the fixed sleeve, and a spring is provided between the upper end of the guide rod and the top of the fixed sleeve; the lower part of the guide rod is hinged to a hinge seat, and a terminal post is provided on the hinge seat and a roller is rotatably connected thereto.
[0006] Preferably, a longitudinal groove is formed on the guide rod along its length, and a threaded hole is formed on the fixing sleeve. The guide bolt is threaded into the threaded hole and passes through the longitudinal groove.
[0007] Preferably, the fixing sleeve includes a fixing sleeve body and a connecting frame. The connecting frame includes a vertical plate and an upper connecting plate and a lower connecting plate fixedly connected to the vertical plate. The fixing sleeve body is fixedly embedded in the lower connecting plate and its upper end face is fixedly connected to the lower end face of the upper connecting plate. The vertical plate is fixedly connected to the insulating plate.
[0008] Preferably, a fixing base connection hole and a clearance hole are respectively provided on the fixing base. The first fastening bolt is sequentially passed through the fixing base connection hole and the insulating plate, and the insulating plate is fixedly connected to the fixing base by the first nut. The upright plate is provided with an upright plate connection hole. The second fastening bolt is sequentially passed through the clearance hole, the insulating plate, and the upright plate connection hole, and the upright plate is fixedly connected to the insulating plate by the second nut.
[0009] Preferably, reinforcing ribs are fixedly connected in a crisscross pattern on the end face of the fixing seat opposite to the upright plate.
[0010] Preferably, the hinge seat includes a support plate, and two hinge plates are disposed opposite each other at the middle of the upper end of the support plate. The guide rod is rotatably connected to the two hinge plates via a first pin assembly.
[0011] Preferably, notches are provided on the support plates on both sides of the hinge plate, and two hinge plates are fixedly connected to the support plates on both sides of the notches. The roller is rotatably connected to the two hinge plates via the second pin assembly and is rotatably embedded in the notch.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. This utility model has the advantages of strong adaptability and stable operation: The guide rod can slide up and down flexibly in the fixed sleeve, driving the roller to extend and retract synchronously. This structure enables the roller to adapt to the misalignment or local protrusion of the conductive track, effectively preventing mechanical impact or jamming, and ensuring the stability of equipment operation.
[0014] 2. In addition, this utility model also has the advantage of low friction loss: the roller and the conductive rail adopt rolling friction, which greatly reduces the wear rate of the receiving device and extends the service life of the equipment compared with traditional sliding friction.
[0015] 3. Furthermore, this utility model also has the advantage of stable and reliable contact pressure: the spring continuously provides stable downward pressure to the roller and has a good buffering function, ensuring that the roller and the conductive rail always maintain close and stable contact, effectively avoiding the problem of unstable power transmission caused by poor contact.
[0016] 4. The device has a scientific and reasonable overall structural design, is easy and quick to install, and is stable and reliable in operation. It not only has a long service life, but also significantly reduces maintenance costs, and has high practical value and economic benefits. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 for Figure 1A schematic diagram of the AA cross-sectional structure.
[0019] Figure 3 for Figure 1 A schematic diagram of the BB cross-sectional structure.
[0020] Figure 4 This is a schematic diagram of the structure of the fixing base of this utility model.
[0021] Figure 5 This is a schematic diagram of the structure of the fixing sleeve of this utility model.
[0022] Figure 6 This is a schematic diagram of the hinge seat of this utility model.
[0023] Figure 7 This is a schematic diagram of the guide rod of this utility model.
[0024] In the diagram: 1. Fixing base; 11. Fixing base connecting hole; 12. Clearance hole; 13. Reinforcing rib; 14. First fastening bolt; 15. First nut; 16. Second fastening bolt; 17. Second nut.
[0025] 2. Insulating board,
[0026] 3. Fixing sleeve; 31. Fixing sleeve body; 311. Threaded hole; 32. Vertical plate; 321. Vertical plate connecting hole; 33. Upper connecting plate; 34. Lower connecting plate; 35. Guide bolt.
[0027] 4. Guide rod; 41. Longitudinal slide groove; 42. Limiting groove; 43. Hinge hole.
[0028] 5. Spring,
[0029] 6. Hinge seat; 61. Support plate; 62. Hinge plate one; 63. Notch; 64. Hinge plate two; 65. First pin; 66. First limiting pin; 67. Second pin; 68. Second limiting pin.
[0030] 7. Terminal block; 8. Roller; 9. Conductive rail. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example
[0033] See appendix Figure 1 As shown, a retractable roller-type power receiving device includes a fixed base 1 connected to the body of an existing electric flatbed vehicle. An insulating plate 2 is fixedly connected to one side of the fixed base 1, and the insulating plate 2 can be made of existing insulating materials. A fixed sleeve 3 with an open lower end is fixedly connected to the outside of the insulating plate 2. A guide rod 4 is slidably embedded in the fixed sleeve 3, and a spring 5 is provided between the upper end of the guide rod 4 and the top of the fixed sleeve 3. The lower part of the guide rod 4 is hinged to a hinge seat 6, and a terminal post 7 is provided on the hinge seat 6, and a roller 8 is rotatably connected to the hinge seat 6.
[0034] See Figure 5 As shown, the fixing sleeve 3 includes a sleeve-shaped body 31 with openings at both ends and a connecting frame welded to the fixing sleeve body 31. Specifically, the connecting frame includes a vertically arranged upright plate 32 and an upper connecting plate 33 and a lower connecting plate 34 fixedly connected to the upright plate 32. The upper connecting plate 33 and the lower connecting plate 34 can be integrally formed with the upright plate 32. The middle part of the fixing sleeve body 31 is fixedly embedded in the lower connecting plate 34 by welding, and the upper end face of the fixing sleeve body 31 is welded to the lower end face of the upper connecting plate 33. A threaded hole 311 is opened on the fixing sleeve body 31 below the lower connecting plate 34. The axis of the threaded hole 311 is perpendicular to the fixing sleeve body 31. The upright plate 32 is fixedly connected to the insulating plate 2.
[0035] See Figure 7 As shown, the guide rod 4 has a cylindrical structure, and a longitudinal groove 41 is formed on the guide rod 4 along its length. Limiting grooves 42 are formed on both sides of the lower end of the guide rod 4, and hinge holes 43 that penetrate the guide rod 4 are formed horizontally on the groove wall of the limiting groove 42.
[0036] See Figure 4 As shown, the fixing base 1 is a plate-shaped structure. Four fixing base connection holes 11 are evenly distributed at the four corners of the fixing base 1, and four clearance holes 12 are evenly distributed on the fixing base 1 inside the fixing base connection holes 11. The fixing base connection holes 11 and clearance holes 12 all penetrate the fixing base 1. In order to improve the structural strength of the fixing base 1, reinforcing ribs 13 are welded in a crisscross pattern on the end face of the fixing base 1 on the side away from the upright plate 32.
[0037] See Figure 1As shown, the mounting base 1 is vertically fixed to the body of the existing electric flatbed vehicle. The first fastening bolt 14 passes sequentially through the mounting base connection hole 11 and the insulating plate 2, and is fixedly connected to the mounting base 1 by the first nut 15. A vertical plate connection hole 321 corresponding to the clearance hole 12 is provided on the vertical plate 32. The second fastening bolt 16 passes sequentially through the clearance hole 12, the insulating plate 2, and the vertical plate connection hole 321, and is fixedly connected to the insulating plate 2 by the second nut 17. In this structure, by fixing the mounting sleeve 3 to the insulating plate 2, and fixing the insulating plate 2 to the mounting base 1, and because the second fastening bolt 16 does not contact the mounting base 1, the mounting sleeve 3 is insulated from the mounting base 1. This connection method achieves reliable electrical insulation between the mounting sleeve 1 and the mounting base 3.
[0038] The guide rod 4 is slidably inserted into the inner cavity of the fixed sleeve body 31. A spring 5 is disposed within the fixed sleeve body 31 between the upper end of the guide rod 4 and the lower end of the upper connecting plate 33, and the spring 5 is in a compressed state. A guide bolt 35 is threaded into the threaded hole 311 and passes through the longitudinal groove 41. Thus, due to the blocking effect of the guide bolt 35, the guide rod 4 can be limited in both the circumferential and axial directions, thereby restricting the circumferential rotation of the guide rod 4 and the sliding range of the guide rod 4 within the fixed sleeve body 31, ensuring the stability of the device operation.
[0039] See Figure 6 As shown, the hinge base 6 includes a support plate 61, and the terminal block 7 is fixedly installed on the support plate 61. Two hinge plates 62 are arranged opposite each other at the middle of the upper end of the support plate 61, and the two hinge plates 62 are vertically welded to the support plate 61. Notches 63 are opened on the support plates 61 on both sides of the hinge plates 62, and two sets of hinge plates 64 are welded on the support plates 61 on both sides of the notches 63. There are two hinge plates 64 in each set, and the hinge plates 62 and hinge plates 64 are arranged parallel to each other.
[0040] See Figure 2 , 3 As shown, the lower part of the guide rod 4 is inserted between the two hinge plates 62 and the two hinge plates 62 are locked in the limiting groove 42 of the guide rod 4. The guide rod 4 is rotatably connected to the two hinge plates 62 through the existing first pin assembly. That is, the first pin 65 is rotatably inserted into the two hinge plates 62 and the hinge hole 43 of the guide rod 4. A first limiting pin 66 is fixedly connected to the first pin 65 on the outside of the two hinge plates 62.
[0041] The roller 8 is rotatably embedded in the notch 63 between the two hinge plates 64. The roller 8 is rotatably connected to the two hinge plates 64 via the existing second pin assembly. That is, the second pin 67 is rotatably inserted into the two hinge plates 64 and the roller 8. A second limiting pin 68 is fixedly connected to the second pin 67 on the outer side of the two hinge plates 64.
[0042] The working principle and process of this embodiment are as follows:
[0043] Install the retractable roller power receiving device according to the above structural description, and connect the terminal 7 to the motor of the track-type electric flatbed vehicle through the wire to realize the transmission of electrical energy. Fix the mounting base 1 to the body of the existing electric flatbed vehicle.
[0044] When the track-type electric flatbed vehicle is running, it drives the roller 8 to roll on the conductive rail 9. Under the combined action of its own weight and the pressure of the spring 5, the roller 8 can adapt to the ups and downs of the conductive rail 9 and automatically adjust its height by extending and retracting. In addition, through the hinge between the lower part of the guide rod 4 and the hinge seat 6, the hinge seat 6 and the roller 8 can rotate relative to the guide rod 4 with the first pin 65 as the axis, thereby further adapting to the ups and downs of the conductive rail 9, so that the roller 8 always maintains close contact with the conductive rail 9, and ensures that the current is stably conducted to the motor through the roller 8, the hinge seat 6, the terminal 7 and the wire.
[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A retractable roller-type power receiving device, comprising a fixed base, characterized in that: An insulating plate is fixedly connected to one side of the fixed base, and a fixed sleeve with an open bottom is fixedly connected to the outside of the insulating plate; a guide rod is slidably embedded in the fixed sleeve, and a spring is provided between the upper end of the guide rod and the top of the fixed sleeve; the lower part of the guide rod is hinged to a hinge seat, and a terminal post is provided on the hinge seat and a roller is rotatably connected thereto.
2. The retractable roller-type power receiving device according to claim 1, characterized in that: A longitudinal groove is provided on the guide rod along its length, and a threaded hole is provided on the fixed sleeve. The guide bolt is threaded into the threaded hole and passes through the longitudinal groove.
3. The retractable roller-type power receiving device according to claim 1, characterized in that: The fixing sleeve includes a fixing sleeve body and a connecting frame. The connecting frame includes a vertical plate and an upper connecting plate and a lower connecting plate fixedly connected to the vertical plate. The fixing sleeve body is fixedly embedded in the lower connecting plate and its upper end face is fixedly connected to the lower end face of the upper connecting plate. The vertical plate is fixedly connected to the insulating plate.
4. The retractable roller-type power receiving device according to claim 3, characterized in that: The fixed base is provided with a fixed base connection hole and a clearance hole respectively. The first fastening bolt is sequentially inserted into the fixed base connection hole and the insulating plate, and the insulating plate is fixedly connected to the fixed base by the first nut. The upright plate is provided with an upright plate connection hole. The second fastening bolt is sequentially inserted into the clearance hole, the insulating plate, and the upright plate connection hole, and the upright plate is fixedly connected to the insulating plate by the second nut.
5. The retractable roller-type power receiving device according to claim 4, characterized in that: Reinforcing ribs are fixedly connected in a crisscross pattern on the end face of the fixed seat opposite to the upright plate.
6. The retractable roller-type power receiving device according to claim 1, characterized in that: The hinge base includes a support plate, and two hinge plates are arranged opposite each other at the middle of the upper end of the support plate. The guide rod is rotatably connected to the two hinge plates through a first pin assembly.
7. The retractable roller-type power receiving device according to claim 6, characterized in that: Notches are provided on the support plates on both sides of the hinge plate one. Two hinge plates two are fixedly connected to the support plates on both sides of the notches respectively. The roller is rotatably connected to the two hinge plates two through the second pin assembly and is rotatably embedded in the notch.