Current collection head without wire jamming
By setting a connecting shaft at the front end of the slipper and using a universal joint to achieve the pitching action, the problems of wire jamming and breakage when the collector head tilts backward at a large angle are solved, thus improving the safety and stability of the collector head.
Patent Information
- Application Number
- CN202520062550.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-10
AI Technical Summary
The existing current collector has a large gap between the slipper and the base when tilted back at a large angle, which poses a risk of wire jamming. In addition, the electrical connection terminals are located at a large displacement position, which can easily lead to wire breakage.
The connecting shaft is positioned at the front end of the sliding shoe, and the pitching motion is achieved through the universal joint sleeve. The pitch hinge shaft is located at the lower front of the sliding shoe, and the electrical connection terminal is located at a position with minimal movement. Combined with the reset mechanism, this ensures good contact between the sliding shoe and the sliding contact line.
This avoids wire jamming in the gap between the slipper and the base, reduces the probability of wire breakage, and improves the flexibility and reliability of the collector head.
Smart Images
Figure CN223590552U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present solution relates to the field of trolleybus, in particular to a current collector head without line clamping. BACKGROUND
[0002] Trolleybus relies on the current collector head on the roof to take power from the slide wire to provide power for the vehicle. The current collector head must maintain good electrical contact with the slide wire under various complex working conditions such as vehicle bumping, turning, line deviation operation, and slide wire ups and downs. Therefore, the current collector head relies on a series of measures such as current collecting rod and tension spring to ensure that the slide shoe always abuts on the slide wire with a certain pressure. The current collector head itself is also designed to have the function of left and right swinging and up and down pitching of the slide shoe to adapt to various complex working conditions.
[0003] Since the most common working condition is that the slide shoe maintains a horizontal state to contact the slide wire, the known current collector head sets the up and down pitch hinge shaft at the middle or lower position in the length direction of the slide shoe. Because this position is close to the center of the slide shoe, the front and rear strokes are basically symmetrical and similar when pitching, which is beneficial to the synchronous wear of the front and rear ends of the carbon brush and will not cause front and rear uneven wear.
[0004] However, this setting has a long-neglected defect: because the pitch hinge shaft is set at the middle position of the slide shoe, a large gap will be generated between the slide shoe and the base when the slide shoe is greatly tilted backward, which is like an open mouth. The trolleybus continues to move forward, and the slide wire and its overhead facilities form a network. There are not only cables extending along the direction of vehicle movement, but also cables, suspensions, and support arms vertically arranged at intervals. When the line is disconnected, the transverse components may be clamped into the gap between the slide shoe and the base. If the vehicle continues to move forward, it will pull the slide wire network, and in severe cases, it will cause the fixed slide wire to fall, causing a major accident. In the known technology, a shielding part is arranged at the front end of the slide shoe in the pitch direction to avoid line clamping. However, the shielding part is often damaged, and if it is not discovered in time, there is still a risk of line clamping. Designing a solid and heavy shielding part will affect the flexibility of the slide shoe and thus reduce the overall performance of the current collector.
[0005] At the same time, the current collector head moves up and down and swings left and right at any time during operation due to the influence of the vehicle operating state. The known current collector head sets the electrical connection terminal at the rear and tail end of the slide shoe, which is located at a position with a large displacement amplitude during slide shoe movement. Therefore, the slide shoe electrical connection terminal often has a broken wire problem during normal operation.
[0006] Therefore, it is necessary to improve the existing current collector head to eliminate such safety hazards. CONTENT OF THE UTILITY MODEL
[0007] The utility model wants to solve the technical problem mainly is the big gap produced when the current collector head is backward, the big angle to the direction of movement, has the problem of the risk of wire clamping.
[0008] The specific technical scheme for solving the above technical problem of the utility model is:
[0009] A current collector head without wire clamping, including base, sliding shoe, universal shaft sleeve, the front end of sliding shoe is fixedly provided with connecting shaft, the connecting shaft is rotatably provided in the universal shaft sleeve, the universal shaft sleeve is provided with pitch hinge shaft, the pitch hinge shaft is arranged below the front of sliding shoe, the universal shaft sleeve can rotate around the pitch hinge shaft;The universal shaft sleeve is a component with cross intersection rotary axis;The lower end of connecting shaft is electric connection end.
[0010] Compared with the prior art, the present scheme has the following beneficial technical effects:
[0011] The connecting shaft is arranged at the front end of the sliding shoe, and the connecting shaft is arranged in the universal shaft sleeve, the pitch movement of the sliding shoe is realized by rotating around the pitch hinge shaft on the universal shaft sleeve, and the pitch hinge shaft is located below the front of the sliding shoe, so that when the angle changes, the displacement of the sliding shoe mainly occurs behind the pitch hinge shaft, and there is no large gap in the forward direction, avoiding the possibility of forward wire clamping in the backward state.
[0012] Meanwhile, the current collector head is affected by the running state of the vehicle during operation, and the up-down pitch and left-right swing occur at any time, and the traditional current collector head sets the cable connection end at the rear and tail end of the sliding shoe, which is located at a position with large displacement amplitude during sliding shoe movement, so that the sliding shoe electric connection end is more prone to breakage during normal operation, the electric connection end is changed to the lower end of the connecting shaft in the present case, which is located at a position with small displacement during movement, improving the working condition of the connecting cable and the electric connection terminal during work, and reducing the probability of breakage.
[0013] Meanwhile, in the development of trackless electric heavy trucks, the application scenario of the current collector is more likely to become the relative movement of the current collector and the sliding contact line under the automatic driving control, and there are fewer applications of line splitting and line merging, the carbon brush wears more, and the known current collector is similar to the railway pantograph, which uses large-size carbon slide plate to contact the sliding contact line, thereby supplying power to the vehicle, and the use of carbon slide plate makes the whole structure relatively bulky, which is not suitable for application on single trucks, the present scheme can conveniently increase the length of the sliding shoe to accommodate large-size carbon brushes, and the longer sliding shoe length can also suppress the horizontal vibration of the sliding shoe during operation to reduce the impact, thereby providing a possible direction for the development of current collectors for trackless electric heavy trucks.
[0014] Further, the electric connection end of the cable and the sliding shoe is independently arranged at the front end of the sliding shoe, which is located at a position with small pitch movement displacement, thereby improving the working condition of the cable and reducing the probability of breakage.
[0015] Further, the sliding shoe is integrally machined with the connecting shaft.
[0016] Further, the distance between the axis of the pitch hinge shaft and the bottom surface of the sliding shoe is less than 3 cm. Only when the distance is small enough, the gap at the front end of the collector head will be small enough when the collector head pitches.
[0017] Further, the position on the base which is adapted to the front end of the sliding shoe is provided with a shielding and collision-avoiding part. Further ensuring that the transverse slide wire will not collide with the sliding shoe, or even if it collides, the streamlined shielding and collision-avoiding part can guide the transverse slide wire to smoothly pass over the sliding shoe, avoiding being stuck in the sliding shoe to cause an accident.
[0018] Further, it further comprises a reset operation mechanism for making the sliding shoe pitch with the change of the angle with the slide wire, keeping good contact of the sliding shoe with the slide wire. The sliding shoe must keep good contact with the slide wire at all times during work, so it must have the ability to change with the change of the shape of the slide wire, and the reset operation mechanism is the structure for driving it to follow.
[0019] Further, the reset operation mechanism comprises a leaf spring and an extension arm, the extension arm extends from the universal shaft sleeve, one end of the leaf spring is fixed on the base or the external member fixedly connected with the base, the other end of the leaf spring is hinged on the extension arm, and the two end points of the leaf spring and the pitch hinge point of the universal shaft sleeve are not on a straight line. The leaf spring has a certain elastic deformation in the length direction and the up-down direction, so its connection with the base or the external member fixedly connected with the base can be fixed connection, and the setting of the extension arm can reduce the requirement for the elastic force of the leaf spring, and a smaller specification of the leaf spring can meet the needs on site.
[0020] Further, the reset operation mechanism comprises a gas spring, an operation hinge shaft provided on the universal shaft sleeve, one end of the gas spring is hinged on the base or the external member fixedly connected with the base, the other end of the gas spring is hinged on the operation hinge shaft on the universal shaft sleeve, and the two end points of the gas spring and the pitch hinge point of the universal shaft sleeve are not on a straight line.
[0021] Further, the reset operation mechanism is a torsion spring respectively provided on the two end portions of the pitch hinge shaft, one end of the torsion spring is fixed on the universal shaft sleeve, and the other end is fixed on the base.
[0022] Further, the pitch hinge shaft comprises a pitch shaft hole and a rotating shaft, a key is arranged in the pitch shaft hole, a key groove is arranged on the rotating shaft, the rotating shaft and the pitch shaft hole are connected together through the key, and radial slots are arranged at the two ends of the rotating shaft, the radial slots are used for fixing the end portions of the torsion spring.
[0023] Further, the two ends of the rotating shaft are respectively provided with circumferential grooves on the two sides of the torsion spring, and the grooves are used for installing the clamping spring to fix the position of the rotating shaft and the torsion spring in the axial direction of the rotating shaft.
[0024] In this way, the overall installation is facilitated.
[0025] Further, the base is provided with a pitch limiting part, which is used for limiting the pitch range of the sliding shoe, avoiding the pantograph pitch angle exceeding the required range, and increasing the failure frequency. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is a schematic diagram of the existing pantograph structure;
[0027] Figure 2 It is a schematic diagram of the embodiment 1 of the utility model;
[0028] Figure 3 It is a sectional view schematic diagram of the embodiment 1 of the utility model;
[0029] Figure 4 It is a schematic diagram of the universal shaft sleeve in the embodiment 1 of the utility model;
[0030] Figure 5 It is a schematic diagram of the embodiment 2 of the utility model;
[0031] Figure 6 It is a sectional view schematic diagram of the embodiment 2 of the utility model;
[0032] Figure 7 It is a schematic diagram of the universal shaft sleeve in the embodiment 2 of the utility model;
[0033] Figure 8 It is a schematic diagram of the embodiment 3 of the utility model;
[0034] Figure 9 It is a sectional view schematic diagram of the embodiment 3 of the utility model;
[0035] Figure 10 It is a schematic diagram of the embodiment 3 of the utility model after some parts are hidden;
[0036] Figure 11 It is a schematic diagram of the universal shaft sleeve in the embodiment 3 of the utility model;
[0037] Figure 12 It is a schematic diagram of the pitch limiting part in the embodiment 1 of the utility model;
[0038] Figure 13 It is a schematic diagram of the pitch limiting part in the embodiment 3 of the utility model;
[0039] Figure 14 This is a schematic diagram of Embodiment 4 of the present invention;
[0040] Figure 15 This is a cross-sectional schematic diagram of Embodiment 4 of the present invention;
[0041] Figure 16 This is a schematic diagram of the universal joint sleeve in Embodiment 4 of this utility model;
[0042] Figure 17 This is a schematic diagram of the ski boot in Embodiment 4 of this utility model.
[0043] The following is a list of component names represented by the reference numerals in the attached diagram:
[0044] 1. Base; 2. Slipper; 3. Carbon brush; 4. Pitch hinge shaft; 5. Connecting shaft; 6. Electrical connection terminal; 7. Universal joint sleeve; 8. Shielding and collision avoidance part; 9. Leaf spring; 10. Extension arm; 11. Gas spring; 12. Operating hinge shaft; 13. Torsion spring; 14. Pitch shaft hole; 15. Rotating shaft; 16. Key; 17. Snap ring; 18. Pitch limiting part; 19. Cable; 20. Vertical hinge shaft. Detailed Implementation
[0045] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0046] like Figure 1 As shown, this is a current collector of existing technology, including a base 1, a slipper 2, a carbon brush 3 disposed inside the slipper 2, a shielding and collision avoidance part 8 on the base 1, a pitch hinge shaft 4 disposed in the middle and lower part of the slipper 2, and an electrical connection end 6 disposed at the tail end of the slipper 2. The tail end is the position with the largest swing amplitude during operation, which is one of the main causes of cable 19 breakage. At the same time, since the pitch hinge shaft 4 is disposed in the middle of the slipper 2, a large angle is formed between the current collector and the base 1 when tilting backward, and a large opening gap is formed at the front end. Although a shield is provided in the figure, when the shield is broken, an opening that may jam the wire may be formed at the front end, which may lead to a major accident.
[0047] Although advanced current collectors are equipped with a quick-descent function for disconnected lines, the power control unit is located at the base of the current collector pole. Due to factors such as system response time lag, vehicle speed, and external conditions, there is still a possibility of the line getting stuck or the net being pulled.
[0048] Example 1:
[0049] like Figures 2 to 4 and Figure 12As shown, a current collector that does not jam wires includes a base 1, a slip shoe 2, and a universal sleeve 7. The front end of the slip shoe 2 is fixedly provided with a connecting shaft 5, which is rotatably inserted into the universal sleeve 7. The universal sleeve 7 is provided with a pitch hinge shaft 4, and the universal sleeve 7 can rotate around the pitch hinge shaft 4. The lower end of the connecting shaft 5 is an electrical connection end 6.
[0050] Furthermore, the distance between the axis of the pitch hinge 4 and the bottom surface of the slipper 2 is less than 3cm.
[0051] Furthermore, a shielding and collision avoidance part is provided on the base 1 at a position that matches the front end of the slipper 2.
[0052] Furthermore, it also includes a reset mechanism, which is used to make the slide shoe 2 pitch as the angle of the sliding contact line changes, so as to maintain good contact between the slide shoe 2 and the sliding contact line.
[0053] Furthermore, the reset mechanism includes a leaf spring 9 and an extension arm 10. The extension arm 10 extends from the universal sleeve 7. One end of the leaf spring 9 is fixed to the base 1 or an external component fixedly connected to the base 1. The other end of the leaf spring 9 is hinged to the extension arm 10. The two endpoints of the leaf spring 9 and the pitch hinge point of the universal sleeve 7 are not on the same line.
[0054] The base 1 is provided with a pitch limiting part 18, which is used to limit the pitch range of the sliding shoe 2; the pitch limiting part 18 cooperates with the sliding shoe 2 and the connecting shaft 5 to limit the pitch range of the sliding shoe 2.
[0055] Example 2:
[0056] like Figures 5 to 7 As shown, unlike Embodiment 1, in this example, the reset operation mechanism includes a gas spring 11 and an operation hinge shaft 12 disposed on the universal sleeve 7. One end of the gas spring 11 is hinged to the base or an external component fixedly connected to the base, and the other end of the gas spring 11 is hinged to the operation hinge shaft 12 on the universal sleeve 7. The two endpoints of the gas spring 11 and the pitch hinge point of the universal sleeve 7 are not on the same line.
[0057] The gas spring 11 can also be replaced by a helical compression spring with a guiding mechanism.
[0058] Example 3:
[0059] like Figures 8 to 11As shown, unlike embodiments 1 and 2, in this example, the reset operation mechanism is a torsion spring 13 located at both ends of the pitch hinge shaft 4. The pitch hinge shaft 4 includes a pitch shaft hole 14 and a rotating shaft 15. A key 16 is provided in the pitch shaft hole 14, and a keyway is provided on the rotating shaft 15. The rotating shaft 15 is connected to the pitch shaft hole 14 via the key 16. Radial slots are provided at both ends of the rotating shaft 15, and the radial slots are used to fix the ends of the torsion spring 13.
[0060] Both ends of the rotating shaft 15 and the two sides of the torsion spring 13 are respectively provided with circumferential grooves. The grooves are used to install snap rings 17 to fix the position of the rotating shaft 15 and the torsion spring 13 in the axial direction of the rotating shaft 15.
[0061] One end of the torsion spring 13 is fixed to the universal joint sleeve 7, and the other end is fixed to the base 1.
[0062] Example 4:
[0063] like Figures 14 to 17 As shown, a current collector that does not jam the wire includes a base 1, a slip shoe 2, a carbon brush 3 disposed inside the slip shoe 2, a shielding and collision avoidance part 8 on the base 1, and a universal joint sleeve 7. An electrical connection end 6 is fixedly disposed on the lower middle part of the slip shoe 2. The universal joint sleeve 7 is provided with a pitch hinge shaft 4, and a pitch shaft hole 14 is provided on the lower front side of the slip shoe 2. The pitch hinge shaft 4 is disposed in the pitch shaft hole 14, connecting the two rotatably together. The universal joint sleeve 7 is also provided with a vertical hinge shaft 20, which is rotatably installed in the mounting hole of the base 1. One end of a leaf spring 9 is fixedly installed on the lower end of the vertical hinge shaft 20 and rotates synchronously with the vertical hinge shaft 20. The other end of the leaf spring 9 is a movable end, which elastically lifts and supports the bottom surface of the slip shoe 2, so that the slip shoe 2 is in a standby position and is held to set the pressure contact wire. Obviously, the leaf spring 9 can also be replaced by an elastic element with the same function, such as a torsion spring.
[0064] The above embodiments all adhere to the principle that the pitch axis is located below the front of the skate, and the electrical connection point is located at the front of the skate; this makes the skate run more smoothly and flexibly, and minimizes or eliminates the frontal opening of the skate within its range of motion; thus reducing the possibility of derailment or snagging. This is also the key feature of this utility model.
[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A current collector that does not jam wires, comprising a base, a slip shoe, and a universal joint sleeve, characterized in that, The front end of the slipper is fixedly provided with a connecting shaft, which is rotatably inserted into the universal sleeve. The universal sleeve is provided with a pitch hinge shaft, which is located below the front of the slipper. The universal sleeve can rotate around the pitch hinge shaft. The universal sleeve is a component with a cross-shaped rotation axis.
2. The current collector that does not jam wires according to claim 1, characterized in that, The distance between the axis of the pitch hinge and the bottom surface of the slipper is less than 3cm.
3. The non-clogging current collector according to claim 1 or 2, characterized in that, The lower end of the connecting shaft is an electrical connection terminal, or the electrical connection terminal is independently disposed at the front end of the slipper.
4. The current collector that does not jam wires according to claim 3, characterized in that, It also includes a reset mechanism, which is used to make the sliding shoe pitch as the angle of the sliding contact line changes, so as to maintain good contact between the sliding shoe and the sliding contact line.
5. The current collector that does not jam wires according to claim 4, characterized in that, The reset mechanism includes a leaf spring and an extension arm. The extension arm extends from the universal joint sleeve. One end of the leaf spring is fixed to the base or an external component fixedly connected to the base. The other end of the leaf spring is hinged to the extension arm. The two ends of the leaf spring and the pitch hinge point of the universal joint sleeve are not on the same line.
6. The current collector that does not jam wires according to claim 4, characterized in that, The reset mechanism includes a gas spring and an operating hinge shaft mounted on the universal joint sleeve. One end of the gas spring is hinged to the base or an external component fixedly connected to the base, and the other end of the gas spring is hinged to the operating hinge shaft on the universal joint sleeve. The two endpoints of the gas spring and the pitch hinge point of the universal joint sleeve are not on the same line.
7. The current collector that does not jam wires according to claim 4, characterized in that, The reset mechanism consists of torsion springs located at both ends of the pitch hinge shaft, with one end of the torsion spring fixed to the universal joint sleeve and the other end fixed to the base.
8. The current collector that does not jam wires according to claim 7, characterized in that, The pitch hinge shaft includes a pitch shaft hole and a rotating shaft. A key is provided in the pitch shaft hole, and a keyway is provided on the rotating shaft. The rotating shaft is connected to the pitch shaft hole by the key. Radial slots are provided at both ends of the rotating shaft, and the radial slots are used to fix the ends of the torsion spring.
9. The current collector that does not jam wires according to claim 1, characterized in that, The slipper and the connecting shaft are integrally machined.
10. The non-jamming current collector according to claim 1 or 2, characterized in that, The base is provided with a pitch limiting part, which is used to limit the pitch range of the ski boot.