Folding mobile overhead line system

Abstract

The invention discloses a folding type mobile contact network which comprises a supporting column, a folding type cantilever device and a power supply body. The folding cantilever device comprises a first cantilever body structure, a rotating shaft, a second cantilever body structure and a relative rotating structure. The first cantilever body structure is rotationally mounted on the supporting column through a rotating shaft; the second cantilever body structure is connected with the first cantilever body through a relative rotation structure, and the second cantilever body structure can rotate relative to the first cantilever body structure; the second cantilever body structure can rotate relative to the first cantilever body structure to adjust the length of the folding cantilever device; and a power supply body of the mobile overhead line system is mounted on the second cantilever body structure. The problem that a power supply body of the mobile overhead line system cannot move to a preset space due to various reasons can be effectively solved, loading and unloading operation can be conveniently carried out on a freight train, and the safety of the freight train adopting hoisting equipment for loading and unloading operation is guaranteed; and meanwhile, the work is more stable and reliable.

Description

Technical Field

[0001] The invention belongs to the field of electrified railway mobile contact network, and in particular relates to a foldable mobile contact network. Background Art

[0002] The existing mobile contact network is used in large freight loading and unloading yards. When a freight train enters or leaves the freight loading and unloading yard, the load-bearing cables and / or contact wires of the mobile contact network need to be located above the rails to facilitate the freight train's pantograph to draw power from the contact wires after it is raised; when a freight train stops at the freight loading and unloading yard, the contact network above the rails needs to be moved away to make room above the rails to facilitate loading and unloading operations.

[0003] The existing mobile contact network load-bearing cables and contact wires are fixed on the arm support device. When the ambient temperature and other factors remain unchanged, there is no change in the length of the conductor. At this time, the mobile contact network moves to the non-working position. Figure 1 In the second case, the entire mobile contact network can be in place at the non-working position, which is an ideal working state. However, due to the influence of thermal expansion and contraction, when the ambient temperature rises, the conductor becomes longer due to the principle of thermal expansion and contraction, and the mobile contact network moves to the non-working position. Figure 1 In the first case, the arm at the non-powered end rotates to the right position first, and the arm at the powered end is still far away from the support side. If the mobile contact network fails to move to the right position, it will affect the safe loading and unloading operation. When the ambient temperature drops, the conductor shortens due to the principle of thermal expansion and contraction, and the mobile contact network moves to the non-working position. Figure 1 In the third case, the powered end arm rotates into position first, while the unpowered end arm is still a long distance away from the support side. If the mobile contact network fails to move into position, safe loading and unloading operations will be affected.

[0004] Also, due to the difference in the force acting on the load-bearing cables between the arm support devices and the arm support devices, for example, since the two ends of the moving contact line are close to the power supply device, if tons of force act directly on the arms near the two ends of the moving contact network, it is easy to damage the arm structure and affect the service life. In addition, after the first or last arm is rotated into place, it stops rotating, and the remaining arm support devices in the moving contact network are not rotated to the side of the railway, and the load-bearing cables and / or contact wires between the arms are not straightened; if the arm support device is not rotated to the side of the railway, the space above the railway is not completely vacated; on the one hand, it will hinder the forklift and the suspension device from loading and unloading freight trains; on the other hand, the suspension device is easy to touch the load-bearing cables, contact wires, or the arm support device, and the dragging action is easy to damage the moving contact network, and there is also a safety hazard.

[0005] To this end, a new foldable mobile contact network can be developed. When the foldable arm is rotated to the side of the railway, the load-bearing cables and the contact wires can be further pulled and moved by the power device. This can conveniently drive the foldable arm and the power supply of the mobile contact network to the side of the railway and further out above the railway, freeing up space above the railway for convenient operations. Summary of the invention

[0006] In order to effectively solve the problems existing in the prior art, the present invention provides a foldable mobile contact network to solve the problem in the prior art that when the load-bearing cables and / or contact wires are rotating from above the railway to the side of the railway or are located on the side of the railway, the load-bearing cables and / or contact wires cannot be further pulled, resulting in the arm in the mobile contact network being unable to effectively and completely move to the side of the railway.

[0007] To achieve the above object, the present invention provides a foldable mobile contact network, which includes a support, a foldable arm device, and a power supply body; the foldable arm device includes a first arm body structure, a rotating shaft, a second arm body structure, and a relatively rotatable structure;

[0008] The first arm body structure is rotatably mounted on the support via the rotation axis;

[0009] The second arm body structure is directly or indirectly connected to the first arm body by means of the relatively rotatable structure, and the second arm body structure is configured to be rotatable relative to the first arm body structure by means of the relatively rotatable structure; the second arm body structure can adjust the length of the foldable arm device by rotating relative to the first arm body structure;

[0010] The power supply of the mobile contact network is directly or indirectly installed on the second arm body structure.

[0011] In the preferred technical solution, when the power supply body is located above the railway, the foldable arm device is in the working position; when the power supply body is located on the side of the railway, the foldable arm device is in the non-working position;

[0012] The foldable arm device is adjusted in length by rotating the first arm body structure relative to the support and the second arm body structure relative to the first arm body structure to match the conversion of the foldable arm device between the non-working state and the working state.

[0013] According to a preferred technical solution, the power supply is pulled by an external force, and the pulling force applied to the power supply directly or indirectly acts on the second arm body structure, thereby driving the second arm body structure to rotate relative to the first arm body structure, and the first arm body structure to rotate relative to the support.

[0014] A preferred technical solution is that the power supply includes a load-bearing cable and / or a contact wire, and the foldable arm device also includes a rotating rod, a load-bearing cable clamping seat and / or a contact wire clamping seat, the rotating rod is rotatably connected to the second arm body structure, the load-bearing cable clamping seat is directly or indirectly arranged on the upper part of the rotating rod for clamping the load-bearing cable, and the contact wire clamping seat is directly or indirectly arranged on the lower part of the rotating rod for clamping the contact wire.

[0015] A preferred technical solution is that the mobile contact network also includes a first gravity contact network compensation device and a second gravity contact network compensation device; wherein, the first gravity contact network compensation device is arranged at one end of the mobile contact network; the second gravity contact network compensation device is arranged at the other end of the mobile contact network, and the first gravity contact network compensation device and the second gravity contact network compensation device respectively adjust the working state of the mobile contact network from both ends of the mobile contact network.

[0016] In a preferred technical solution, the mobile contact network further comprises a power supply device, which is used to drive the first gravity contact network compensation device or the second gravity contact network compensation device to rise or fall to break the balance and realize the switching between the working position and the non-working position of the mobile contact network;

[0017] In an unbalanced state, the contact wire and / or the load-bearing cable in the driven mobile contact network is transferred from a working position to a non-working position, or from a non-working position to a working position.

[0018] A preferred technical solution is that the power supply device adopts a hydraulically driven lifting device, and the hydraulically driven lifting device is used to drive the first gravity contact network compensation device or the second gravity contact network compensation device to rise or fall to break the balance and realize the switching of the mobile contact network working position and non-working position.

[0019] According to a preferred technical solution, the mobile contact network further comprises a driving device, which provides a pulling force and / or a pushing force for directly or indirectly driving the second arm body structure to rotate relative to the first arm body structure.

[0020] In a preferred technical solution, the mobile contact network further comprises a rotation limiting device, which is used to limit the rotation angle of the second arm body structure relative to the first arm body structure; when the foldable arm device is in the working position, the rotation limiting device limits the rotation angle of the second arm body structure relative to the first arm body structure, so that the power supply connected to the second arm body structure is located within the side limit of the mobile contact network of the corresponding railway; when the foldable arm device is in the non-working position, the rotation limiting device limits the rotation angle of the second arm body structure relative to the first arm body structure, so that a safe distance exists between the power supply connected to the second arm body structure and the pillar of the mobile contact network located on the side of the railway;

[0021] The rotation limiting device can adopt any of the following structural forms:

[0022] The first structural form: the first arm body structure is directly or indirectly equipped with a limit rod, one end of the limit rod is rotatably connected to the first arm body structure, the other end of the limit rod connected to the second arm body structure is provided with a limit slide groove, and the second arm body structure can slide in the limit slide groove of the limit rod;

[0023] The second structural form: the first arm body structure and the second arm body structure are directly or indirectly installed with a limited rotation shaft, and the second arm body structure can rotate relative to the first arm body structure by limiting the rotation shaft;

[0024] The third structural form: a limit spring assembly is installed between the first arm body structure and the second arm body structure.

[0025] In a preferred technical solution, the relatively rotatable structure adopts any one of the following structural forms:

[0026] The first structural form: the first arm body structure and the second arm body structure are directly or indirectly installed with a rotating shaft, and the second arm body structure can rotate relative to the first arm body structure through the rotating shaft;

[0027] The second structural form: a ball joint is directly or indirectly installed between the first arm body structure and the second arm body structure, and the second arm body structure can rotate relative to the first arm body structure through the ball joint;

[0028] A third structural form: a hinge is directly or indirectly installed between the first arm body structure and the second arm body structure, and the second arm body structure can rotate relative to the first arm body structure through the hinge;

[0029] The fourth structural form: a rotatable gear pair that cooperates with each other is directly or indirectly installed between the first arm body structure and the second arm body structure, and the rotatable gear pair is used to enable the second arm body structure to rotate relative to the first arm body structure.

[0030] According to a preferred technical solution, the mobile contact network further comprises one or more insulators, wherein the insulators are directly or indirectly arranged on the second arm body structure to achieve electrical isolation between the power supply body and the first arm body structure.

[0031] According to a preferred technical solution, the mobile contact network further comprises one or more insulators, wherein the insulators are directly or indirectly arranged on the first arm body structure to achieve electrical isolation between the power supply body and the support.

[0032] According to a preferred technical solution, the mobile contact network also includes two or more insulators, which are directly or indirectly arranged on the second arm body structure to achieve electrical isolation between the power supply and the first arm body structure; the insulators are directly or indirectly arranged on the first arm body structure to achieve electrical isolation between the power supply and the support.

[0033] According to a preferred technical solution, the mobile contact network also includes a first gravity contact network compensation device and a power supply device. The first gravity contact network compensation device is arranged at one end of the mobile contact network, and the power supply device is arranged at the other end of the mobile contact network. The first gravity contact network compensation device and the power supply device respectively adjust the working state of the mobile contact network from both ends of the mobile contact network; the power supply device is used to pull the load-bearing cable and / or the contact line to move, thereby driving the wrist-arm support device to switch between the working position or the non-working position.

[0034] The present invention includes but is not limited to the following beneficial effects:

[0035] 1. When the ambient temperature rises, the folding arm of the unpowered side of the mobile contact network is in place first, and the powered side is not yet in place. At this time, after the unpowered side limit device supports the distance between the arm and the support side, the angle between the first arm body structure and the second arm body structure of the folding arm device can be changed (for example, become larger), the unpowered side arm continues to move, and the powered side arm continues to rotate until the powered side arm rotates into place and stops.

[0036] 2. When the ambient temperature drops, the folding arm on the power side of the mobile contact network is in place first, and the arm on the unpowered side has not yet rotated into place. At this time, after the power side limit device supports the distance between the arm and the support side, the angle between the first arm body structure and the second arm body structure of the folding arm can be changed (for example, become larger), the power side arm continues to move, and the unpowered side arm continues to rotate until the unpowered side arm rotates into place and stops.

[0037] 3. The foldable arm structure and rotating connection method can automatically adjust the arm angle to compensate for the change in contact network position caused by the change in conductor length due to thermal expansion and contraction. This makes the mobile contact network composed of the foldable arm structure simpler and more stable in operation.

[0038] 4. In the existing contact network, the power supply is fixed on the arm device, and the distance from the fixing point of the power supply on the arm device to the rotatable point of the arm device is fixed. In the present invention, the second arm body structure rotates relative to the first arm body structure to increase or shorten the length of the overall arm device. In the present invention, arm devices of different lengths can be provided according to different working states of the arm device in the working position or non-working position.

[0039] 5. The present invention provides a wrist arm device and a corresponding mobile contact network. When the wrist arm device is rotated to the side of the railway, or in the process of rotation, the second wrist arm body structure can be rotated relative to the first wrist arm body structure, thereby adjusting the length of the entire wrist arm device; this approach can effectively solve the problem that the wrist arm device can be further lengthened after being rotated to the side of the railway, so that the power supply can be further moved a certain distance.

[0040] 6. In the entire mobile contact network, the load-bearing cables and contact wires can be further pulled and moved, so that the wrist-arm device can be easily driven to rotate toward the side of the railway, and the wrist-arm device can be effectively driven to move further toward the side of the railway, thereby effectively freeing up space above the railway, facilitating loading and unloading operations of freight trains, and ensuring the safety of freight trains using lifting equipment for loading and unloading operations, avoiding safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of the working principle structure of the mobile contact network in the prior art;

[0043] Figure 2 It is a schematic structural diagram of the foldable arm of the mobile contact network in the non-working position state in the first embodiment of the present invention;

[0044] Figure 3 It is a schematic structural diagram of the foldable arm of the mobile contact network in the working position in the first embodiment of the present invention;

[0045] Figure 4 It is a schematic diagram of the foldable mobile contact network of the present invention in a non-working position;

[0046] Figure 5 It is a schematic diagram of the foldable mobile contact network of the present invention in the working position;

[0047] Figure 6 It is a schematic structural diagram of the foldable arm of the mobile contact network of the present invention in the non-working position in Example 2;

[0048] Figure 7 It is a schematic structural diagram of the foldable arm of the mobile contact network of the present invention in the working position in Example 2;

[0049] Figure 8 It is a schematic structural diagram of the foldable arm of the mobile contact network of the present invention in the non-working position in Example 3;

[0050] Fig. 9 It is a schematic structural diagram of the foldable arm of the mobile contact network of the present invention in Example 3 in the working position.

[0051] In the figure: 1. first arm body structure; 2. rotation axis; 3. second arm body structure; 4. relatively rotatable structure; 51. load-bearing cable; 52. contact wire; 6. support; 7. insulator; 8. rotating rod; 9. load-bearing cable clamping seat; 10. contact wire clamping seat; 11. first gravity contact network compensation device; 12. second gravity contact network compensation device; 13. hydraulically driven lifting device; 14. rotation limit device. DETAILED DESCRIPTION

[0052] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices consistent with some aspects of the present invention as detailed in the appended claims.

[0053] See also Figures 2 to 9 As shown, the specific implementation method is described below:

[0054] Example 1

[0055] like Figures 2 to 5 As shown, the present invention provides a foldable mobile contact network, which includes a support 6, a foldable arm device, and a power supply body; the foldable arm device includes a first arm body structure 1, a rotating shaft 2, a second arm body structure 3, and a relatively rotatable structure 4;

[0056] The first arm body structure 1 is rotatably mounted on the support 6 via the rotation shaft 2;

[0057] The second arm body structure 3 is directly or indirectly connected to the first arm body by means of the relatively rotatable structure 4. The second arm body structure 3 is configured to be rotatable relative to the first arm body structure 1 by means of the relatively rotatable structure 4. The second arm body structure 3 can adjust the length of the foldable arm device by rotating relative to the first arm body structure 1.

[0058] The power supply of the mobile contact network is directly or indirectly installed on the second arm body structure 3.

[0059] It should be noted that the first arm body structure 1 in this embodiment includes a body structure of any form, and the second arm body structure 3 includes a body structure of any form. The first arm body structure 1 and the second arm body structure 3 in this embodiment are only a specific implementation scheme, including but not limited to this.

[0060] In addition, the power supply in this embodiment may preferably include a load-bearing cable 51 and / or a contact wire 52. The use of the load-bearing cable 51 alone, or the use of the contact wire 52 alone, or the use of both the load-bearing cable 51 and the contact wire 52 in the mobile contact network all fall within the protection scope defined in this implementation.

[0061] In addition, in this embodiment, the power supply is directly or indirectly arranged on the second arm body structure 3, and the specific protection forms include that the power supply is directly arranged on the second arm body structure 3, or the power supply is indirectly arranged on the second arm body structure 3 through an intermediate piece, and the intermediate piece here can be one or more intermediate pieces. The function of the intermediate piece is mainly to facilitate the direct or indirect arrangement of the load-bearing cable 51 or the contact wire 52 on the second arm structure body.

[0062] Regarding the installation method, it should be added that the load-bearing cable 51 and / or the contact wire 52 can be directly or indirectly installed on the second arm body structure 3. The load-bearing cable 51 and / or the contact wire 52 are directly or indirectly arranged on the middle piece, and the middle piece is directly or indirectly fixedly arranged on the second arm body structure 3. In this embodiment, the load-bearing cable 51 and / or the contact wire 52 can be fixed on the middle piece. Of course, the load-bearing cable 51 and the contact wire 52 can also be slidably arranged on the middle piece. For example, this method can be applicable to the case where a stroke compensation device is provided, and the load-bearing cable 51 is inserted into the first stroke compensation device (not shown in the figure), and a spring is arranged in the first stroke compensation device. Regarding the specific structure of the stroke compensation device here, the applicant's previously authorized patent CN214822715U can be fully cited here, and this patent will not be repeated.

[0063] To supplement, normally when a freight train enters or exits a freight loading and unloading yard, the load-bearing cables 51 and / or contact wires 52 of the mobile contact network need to be located above the rails to facilitate the freight train's pantograph to draw power from the contact wires 52 after it is raised; when a freight train stops at a freight loading and unloading yard, the contact network above the rails needs to be moved away to make room above the rails to facilitate loading and unloading operations.

[0064] In this embodiment, it is defined that when the power supply is located above the railway, the arm device is in the working position, and when the power supply is located on the side of the railway, the arm device is in the non-working position; in addition, in this embodiment, the terms "above the rails" and "above the railway" correspond to the spatial positions of the foldable arm device, and the two terms "above the rails" and "above the railway" have the same meaning.

[0065] An important technical feature of this embodiment is that during the process of the foldable arm device rotating from the working position to the non-working position, the second arm body structure 3 gradually rotates relative to the first arm body structure 1 to increase the length of the entire foldable arm device; and / or

[0066] When the foldable arm device is in a non-working state, the second arm body structure 3 rotates relative to the first arm body structure 1 to increase the length of the entire foldable arm device.

[0067] It should be noted that the length of the existing arm devices is consistent. Therefore, in the entire mobile contact network, when the power supply body rotates toward the side of the railway, the load-bearing cable 51 and / or the contact wire 52 are arranged on several arm body structures. The existing technical problems have been detailed in the background part and will not be repeated here.

[0068] In order to solve this problem, the applicant avoided the existing technology and involved a new structural solution, which has no similar or identical solutions in the existing prior patents. One of the highlights of this solution is that when the foldable arm device rotates from the working position to the non-working position, the second arm body structure 3 gradually rotates relative to the first arm body structure 1, and the focus is on gradually rotating the second arm body structure 3 to change the length of the entire foldable arm device; in this way, the first arm body structure 1 rotates around the support 6, and the second arm body structure 3 can rotate around the first arm body structure 1.

[0069] Another implementation is: when the foldable arm device is in a non-working state, that is, the foldable arm device has been basically or completely moved out of the space above the rail, the second arm body structure 3 rotates relative to the first arm body structure 1 to increase the length of the entire foldable arm device;

[0070] In this manner, after the foldable arm device has been basically or completely moved out of the space above the rail, the second arm body structure 3 rotates relative to the first arm body structure 1 .

[0071] Of course, the relationship defined in this embodiment is and / or. The above two cases have been explained separately. The relationship of and is also defined in this embodiment. That is, the case where both of the above two cases exist. That is, the second arm body structure 3 rotates while the foldable arm device rotates toward the side of the railway. After the foldable arm device is basically or completely moved out of the space above the rail, the second arm body structure 3 can further rotate relative to the first arm body structure 1.

[0072] The second arm body structure 3 can be pulled and / or pushed, and can rotate relative to the first arm body structure 1 by using the relatively rotatable structure 4;

[0073] Supplementary explanation of this embodiment: The relatively rotatable structure 4 refers to any structure that can realize the second arm body structure 3 relative to the first arm body structure 1. Several specific structural forms are given in this embodiment. However, it should be noted that the several specific structural forms given in this embodiment include but are not limited to these. Any structure that can realize the second arm body structure 3 being able to rotate relative to the first arm body structure 1 is within the protection scope of this embodiment, and this embodiment explains this here.

[0074] The above-mentioned structural forms for realizing that the second arm body structure 3 can be pulled and / or pushed include:

[0075] The first structural form: the power supply is directly or indirectly connected to the second arm body structure 3, and the power supply is pulled by an external force, and the pulling force applied to the power supply directly or indirectly acts on the second arm body structure 3, thereby driving the second arm body structure 3 to rotate relative to the first arm body structure 1;

[0076] The second structural form: also includes a driving device (not shown in the figure), which provides a pulling force and / or a thrust force for directly or indirectly driving the second arm body structure 3 to rotate relative to the first arm body structure 1; it is supplemented here that the driving device here is any device that can provide a force output, and the specific installation position of the driving device is not limited. As long as the force output by the driving device can drive the second arm body structure 3 to rotate relative to the first arm body structure 1. For example, a hydraulic cylinder or a pneumatic cylinder. A motor can also be used as the output power, and at least one transmission component is used to directly or indirectly apply the force to the second arm body structure 3. Such a transmission method also belongs to a transmission method of the driving device in this embodiment.

[0077] The structural form that enables the second arm body structure 3 to be pulled and / or pushed adopts the above-mentioned first structural form and / or the second structural form. It should be supplemented here that this is an and / or relationship, and the above-mentioned first structural form or the second structural form can be used alone to drive the second arm body structure 3 to rotate, or these two methods can exist at the same time. For example, when the power supply is pulled by an external force, the pulling force to which the power supply is subjected directly or indirectly acts on the second arm body structure 3, and the driving device is also used to push or pull the second arm body structure 3 to rotate.

[0078] In addition, in order to facilitate the review by those skilled in the art, the second arm body structure 3 being pulled and / or pushed mentioned above is explained here with respect to being pulled and / or pushed.

[0079] Similarly, here it is also an and / or relationship. The second arm body structure 3 is pulled. This is easy to understand. For example, the force on the load-bearing cable 51 can pull the second arm device to rotate. This is just one way. Another way is to use the driving device mentioned above to drive the second arm body structure 3 to rotate. Both of these situations can also exist.

[0080] The applicant believes that as a designer of mobile contact networks in the field, the above content has been explained clearly, and the various pulled and / or pushed implementation forms in this embodiment all fall within the scope of protection limited by the present invention.

[0081] During the process of the foldable arm device rotating from the working position to the non-working position, or when the foldable arm device is in the non-working position, the overall length of the foldable arm device can be increased, so that the power supply can be further rotated, and the further movement of the power supply is also conducive to the further rotation of the arm device. The final effect achieved is that the foldable arm device is basically or completely moved out of the space above the rails, overcoming the problem of one or more arms not being able to completely move out of the railroad during the rotation of the mobile contact network to the non-working position in the prior art. This embodiment defines: If one or more arm devices in the entire mobile contact network cannot be completely moved out of the railroad, it is deemed that the entire mobile contact network has not been rotated into place.

[0082] The foldable arm-and-crutch device provided in this embodiment can effectively solve the problem that the arm-and-crutch device in the mobile contact network cannot be rotated into place during the process of rotating from the working position to the non-working position.

[0083] As a limitation of the overall technical solution, it is necessary to explain the rotation of the lower arm device from the non-working position state to the working position state to facilitate the review by technical personnel in the field.

[0084] like Figure 4 and Figure 5 As shown, when the power supply is located above the railway, the foldable arm device is in the working position; when the power supply is located on the side of the railway, the foldable arm device is in the non-working position; the foldable arm device is adjusted in length by rotating the first arm body structure 1 relative to the support 6 and the second arm body structure 3 relative to the first arm body structure 1 to match the conversion of the foldable arm device between the non-working position and the working position.

[0085] During the rotation of the foldable arm device from the non-working position to the working position, the second arm body structure 33 gradually rotates relative to the first arm body structure 11, thereby shortening the length of the entire foldable arm device; and / or

[0086] When the foldable arm device is in the working position, the second arm body structure 3 rotates relative to the first arm body structure 1 to shorten the length of the entire foldable arm device.

[0087] It is necessary to supplement the description of the working position state and non-working position state of the foldable arm device. The foldable arm device as a whole rotates around the rotating shaft 2 set on the support 6, and the foldable arm device is driven by the force of the power supply body to switch between the working position state and the non-working position state. The working position state refers to the state of the foldable arm device when the power supply body is basically located directly above the rail, and the pantograph of the freight train is lifted up and can draw power from the contact line 52. The non-working position state refers to the state in which the foldable arm device is rotated to the side of the railway and the power supply body moves out of the space above the rail. It can be seen that the working position state or the non-working position state refers to an interval, not a specific rotation angle. For example, when the foldable arm device is located above the railway, the standard should be that the foldable arm device and the rail should be 90° in space. The interval of 80° to 100° can be defined as the working position state, and the judgment standard is that as long as the pantograph is lifted, it can draw power from the contact line 52.

[0088] The present embodiment may also preferably include a rotating rod 8, a load-bearing cable clamping seat 9 and / or a contact line clamping seat 10, wherein the load-bearing cable clamping seat 9 is directly or indirectly arranged on the upper part of the rotating rod 8 for clamping the load-bearing cable 51, and the contact line clamping seat 10 is directly or indirectly arranged on the lower part of the rotating rod 8 for clamping the contact line 52.

[0089] As a preferred embodiment, this embodiment also includes a first gravity contact network compensation device 11 and a second gravity contact network compensation device 12; wherein, the first gravity contact network compensation device 11 is arranged at one end of the mobile contact network; the second gravity contact network compensation device 12 is arranged at the other end of the mobile contact network, and the first gravity contact network compensation device 11 and the second gravity contact network compensation device 12 respectively adjust the working state of the mobile contact network from both ends of the mobile contact network.

[0090] As a preferred embodiment, the present embodiment may also include a power supply device, the power supply device is used to drive the first gravity contact network compensation device 11 or the second gravity contact network compensation device 12 to rise or fall to break the balance and realize the switching between the working position and the non-working position; in the non-balanced state, drive the contact wire 52 and / or the load-bearing cable 51 in the mobile contact network to transfer from the working position to the non-working position, or from the non-working position to the working position. In the present embodiment, the gravity contact network compensation device can use a weight, including a first weight and a second weight, the first weight is directly or indirectly set at one end of the load-bearing cable 51 and / or the contact wire 52, the second weight is directly or indirectly set at the other end of the load-bearing cable 51 and / or the contact wire 52, each weight is electrically isolated from the load-bearing cable 51 by an insulator 7, and each weight is electrically isolated from the contact wire 52 by an insulator 7.

[0091] The power supply device may adopt a hydraulically driven lifting device 13, and the hydraulically driven lifting device 13 is used to drive the first gravity contact network compensation device 11 or the second gravity contact network compensation device 12 to rise or fall to break the balance and realize the switching between the working position and the non-working position of the mobile contact network. In this embodiment, the hydraulically driven lifting device 13 drives the first gravity contact network compensation device 11 to rise, and the load-bearing cable 51 and / or the contact line 52 drive the several folding arm devices in the mobile contact network to rotate to the non-working position so that the load-bearing cable 51 and / or the contact line 52 swing to the side of the railway, and the hydraulically driven lifting device 13 drives the first gravity contact network compensation device 11 to fall, and the load-bearing cable 51 and / or the contact line 52 drive the several folding arm devices in the mobile contact network to rotate to the working position so that the load-bearing cable 51 and / or the contact line 52 swing to the top of the rail.

[0092] As a preferred embodiment of the present invention, the mobile contact network of the present invention may further include a rotation limiting device 14, which is used to limit the rotation angle of the second arm body structure 3 relative to the first arm body structure 1; when the foldable arm device is in the working position, the rotation limiting device 14 limits the rotation angle of the second arm body structure 3 relative to the first arm body structure 1, so that the power supply connected to the second arm body structure 3 is located within the side limit of the mobile contact network of the corresponding railway; when the foldable arm device is in the non-working position, the rotation limiting device 14 limits the rotation angle of the second arm body structure 3 relative to the first arm body structure 1, so that a safe distance exists between the power supply connected to the second arm body structure 3 and the pillar 6 of the mobile contact network located on the side of the railway;

[0093] The rotation limiting device 14 can adopt any of the following structural forms:

[0094] The first structural form: the first arm body structure 1 is directly or indirectly installed with a limit rod, one end of the limit rod is rotatably connected to the first arm body structure 1, and the other end of the limit rod connected to the second arm body structure 3 is provided with a limit slide groove, and the second arm body structure 3 can slide in the limit slide groove of the limit rod;

[0095] The second structural form: the first arm body structure 1 and the second arm body structure 3 are directly or indirectly installed with a limited rotation axis, and the second arm body structure 3 can rotate relative to the first arm body structure 1 by limiting the rotation axis;

[0096] The third structural form: a limit spring assembly is installed between the first arm body structure 1 and the second arm body structure 3.

[0097] In this embodiment, the relatively rotatable structure 4 of the foldable arm-wrist device may adopt any of the following structural forms:

[0098] The first structural form: the first arm body structure 1 and the second arm body structure 3 are directly or indirectly installed with a rotating shaft, and the second arm body structure 3 can rotate relative to the first arm body structure 1 through the rotating shaft;

[0099] The second structural form: a ball joint is directly or indirectly installed between the first arm body structure 1 and the second arm body structure 3, and the second arm body structure 3 can rotate relative to the first arm body structure 1 through the ball joint;

[0100] The third structural form: a hinge is directly or indirectly installed between the first arm body structure 1 and the second arm body structure 3, and the second arm body structure 3 can rotate relative to the first arm body structure 1 through the hinge;

[0101] The fourth structural form: a rotatable gear pair that cooperates with each other is directly or indirectly installed between the first arm body structure 1 and the second arm body structure 3, and the rotatable gear pair is used to enable the second arm body structure 3 to rotate relative to the first arm body structure 1.

[0102] In this embodiment, the mobile contact network may further include one or more insulators 7, and the insulators 7 are directly or indirectly arranged on the second arm body structure 3 to achieve electrical isolation between the power supply body and the first arm body structure 1.

[0103] As a preferred technical solution, the mobile contact network of this embodiment may further include one or more insulators 7, which are directly or indirectly arranged on the first arm body structure 1 to achieve electrical isolation between the power supply and the support 6.

[0104] As a preferred technical solution, the mobile contact network of this embodiment may also include more than two insulators 7, and the insulators 7 are directly or indirectly arranged on the second arm body structure 3 to achieve electrical isolation between the power supply and the first arm body structure 1; the insulators 7 are directly or indirectly arranged on the first arm body structure 1 to achieve electrical isolation between the power supply and the support 6.

[0105] Of course, in other embodiments, another type of mobile contact network (not shown in the figure) can also be provided, wherein the mobile contact network includes one or more folding arm devices, a first gravity contact network compensation device and a power supply device, wherein the first gravity contact network compensation device is arranged at one end of the mobile contact network, and the power supply device is arranged at the other end of the mobile contact network, and the first gravity contact network compensation device and the power supply device respectively adjust the working state of the mobile contact network from both ends of the mobile contact network; the power supply device is used to pull the load-bearing cable and / or the contact line to move, thereby driving the arm support device to switch between the working position or the non-working position.

[0106] In summary, in the existing contact network, the power supply is fixed on the arm device, and the distance from the fixed point of the power supply on the arm device to the rotatable point of the arm device is fixed. In the present invention, the second arm body structure 3 rotates relative to the first arm body structure 1 to increase or shorten the length of the overall arm device. The folding arm device in the present invention can provide different lengths of arm devices according to the different working states of the arm device in the working position or non-working position. Using the folding arm device and the corresponding mobile contact network provided by the present invention, when the arm device rotates to the side of the railway, or in the process of rotation, the second arm body structure 3 can rotate relative to the first arm body structure 1 to increase the length of the overall arm device; this approach can effectively achieve that the arm device can be further lengthened after being turned to the side of the railway, so that the power supply can further move a distance. In the entire mobile contact network, the load-bearing cable 51 and the contact wire 52 can be further pulled and moved, so that the folding arm device can be easily driven to rotate toward the side of the railway, and the folding arm device can be effectively driven to move further toward the side of the railway, thereby effectively making room above the railway, facilitating the loading and unloading operations of freight trains, ensuring the safety of freight trains using lifting equipment for loading and unloading operations, and avoiding safety hazards.

[0107] Example 2

[0108] like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the structure of the mobile contact network in this embodiment is substantially similar to the structure of other mobile contact networks in the present invention, except that Figure 6 or Figure 7 As shown, the specific structure of the foldable arm device of the relevant mobile contact network is slightly different, which will not be repeated here.

[0109] Example 3

[0110] like Figure 4 , Figure 5 , Figure 8 , Fig. 9 As shown, the structure of the mobile contact network in this embodiment is substantially similar to the structure of other mobile contact networks in the present invention, except that Figure 8 or Fig. 9 As shown, the specific structure of the foldable arm device of the relevant mobile contact network is slightly different, which will not be repeated here.

[0111] The present invention can rotate relative to the first arm body structure through the second arm body structure, thereby effectively solving the problem that individual arm devices cannot synchronously follow other arm devices to the predetermined position on the side of the railway due to various reasons, and can effectively compensate for the problem that the power supply body of the mobile contact network cannot be moved to a safe space or to an effective working space due to various reasons. It is convenient for loading and unloading operations of freight trains, ensures the safety of freight trains using hoisting equipment for loading and unloading operations, and avoids safety hazards; at the same time, it makes its work more stable and reliable.

[0112] It should be noted that, for the specific structures of other related devices or specific shapes of related components in the mobile contact network of the present invention, reference can be made to the contents of other related patents for mobile contact networks that the applicant has applied for authorization or has applied for disclosure, and will not be repeated here.

[0113] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A foldable mobile contact network, characterized in that: It includes a support, a foldable arm device, and a power supply; the foldable arm device includes a first arm body structure, a rotation axis, a second arm body structure, and a relatively rotatable structure; The first arm body structure is rotatably mounted on the support via the rotation axis; The second arm body structure is directly or indirectly connected to the first arm body by means of the relatively rotatable structure, and the second arm body structure is configured to be rotatable relative to the first arm body structure by means of the relatively rotatable structure; the second arm body structure can adjust the length of the foldable arm device by rotating relative to the first arm body structure; The power supply of the mobile contact network is directly or indirectly installed on the second arm body structure.

2. The mobile contact network according to claim 1, characterized in that: When the power supply body is located above the railway, the foldable arm device is in the working position; when the power supply body is located on the side of the railway, the foldable arm device is in the non-working position; The foldable arm device is adjusted in length by rotating the first arm body structure relative to the support and the second arm body structure relative to the first arm body structure to match the conversion of the foldable arm device between the non-working state and the working state.

3. The mobile contact network according to claim 1, characterized in that: The power supply is pulled by an external force, and the pulling force applied to the power supply directly or indirectly acts on the second arm body structure, thereby driving the second arm body structure to rotate relative to the first arm body structure, and the first arm body structure to rotate relative to the support.

4. The mobile contact network according to claim 2, characterized in that: The power supply body includes a load-bearing cable and / or a contact wire, and the foldable arm device also includes a rotating rod, a load-bearing cable clamping seat and / or a contact wire clamping seat. The rotating rod is rotatably connected to the second arm body structure, and the load-bearing cable clamping seat is directly or indirectly arranged on the upper part of the rotating rod for clamping the load-bearing cable, and the contact wire clamping seat is directly or indirectly arranged on the lower part of the rotating rod for clamping the contact wire.

5. The mobile contact network according to claim 4, characterized in that: It also includes a first gravity contact network compensation device and a second gravity contact network compensation device; wherein, the first gravity contact network compensation device is arranged at one end of the mobile contact network; the second gravity contact network compensation device is arranged at the other end of the mobile contact network, and the first gravity contact network compensation device and the second gravity contact network compensation device respectively adjust the working state of the mobile contact network from both ends of the mobile contact network.

6. The mobile contact network according to claim 5, characterized in that: It also includes a power supply device, which is used to drive the first gravity contact network compensation device or the second gravity contact network compensation device to rise or fall to break the balance and realize the switching between the working position and the non-working position of the mobile contact network; In an unbalanced state, the contact wire and / or the load-bearing cable in the driven mobile contact network is transferred from a working position to a non-working position, or from a non-working position to a working position.

7. The mobile contact network according to claim 6, characterized in that: The power supply device adopts a hydraulically driven lifting device, which is used to drive the first gravity contact network compensation device or the second gravity contact network compensation device to rise or fall to break the balance and realize the switching of the mobile contact network working position and non-working position.

8. The mobile contact network according to claim 2, characterized in that: It also includes a driving device, which provides a pulling force and / or a pushing force for directly or indirectly driving the second arm body structure to rotate relative to the first arm body structure.

9. The mobile contact network according to claim 2, characterized in that: It also includes a rotation limiting device, which is used to limit the rotation angle of the second arm body structure relative to the first arm body structure; when the foldable arm device is in the working position, the rotation limiting device limits the rotation angle of the second arm body structure relative to the first arm body structure, so that the power supply connected to the second arm body structure is located within the side limit of the mobile contact network of the corresponding railway; when the foldable arm device is in the non-working position, the rotation limiting device limits the rotation angle of the second arm body structure relative to the first arm body structure, so that a safe distance exists between the power supply connected to the second arm body structure and the pillar of the mobile contact network located on the side of the railway; The rotation limiting device can adopt any of the following structural forms: The first structural form: the first arm body structure is directly or indirectly equipped with a limit rod, one end of the limit rod is rotatably connected to the first arm body structure, the other end of the limit rod connected to the second arm body structure is provided with a limit slide groove, and the second arm body structure can slide in the limit slide groove of the limit rod; The second structural form: the first arm body structure and the second arm body structure are directly or indirectly installed with a limited rotation shaft, and the second arm body structure can rotate relative to the first arm body structure by limiting the rotation shaft; The third structural form: a limit spring assembly is installed between the first arm body structure and the second arm body structure.

10. The mobile contact network according to claim 1, characterized in that: The relatively rotatable structure adopts any of the following structural forms: The first structural form: the first arm body structure and the second arm body structure are directly or indirectly installed with a rotating shaft, and the second arm body structure can rotate relative to the first arm body structure through the rotating shaft; The second structural form: a ball joint is directly or indirectly installed between the first arm body structure and the second arm body structure, and the second arm body structure can rotate relative to the first arm body structure through the ball joint; A third structural form: a hinge is directly or indirectly installed between the first arm body structure and the second arm body structure, and the second arm body structure can rotate relative to the first arm body structure through the hinge; The fourth structural form: a rotatable gear pair that cooperates with each other is directly or indirectly installed between the first arm body structure and the second arm body structure, and the rotatable gear pair is used to enable the second arm body structure to rotate relative to the first arm body structure.

11. The mobile contact network according to any one of claims 1 to 10, characterized in that: It also includes one or more insulators, which are directly or indirectly arranged on the second arm body structure to achieve electrical isolation between the power supply and the first arm body structure.

12. The mobile contact network according to any one of claims 1 to 10, characterized in that: It also includes one or more insulators, which are directly or indirectly arranged on the first arm body structure to achieve electrical isolation between the power supply and the support.

13. The mobile contact network according to any one of claims 1 to 10, characterized in that: It also includes more than two insulators, which are directly or indirectly arranged on the second arm body structure to achieve electrical isolation between the power supply and the first arm body structure; the insulators are directly or indirectly arranged on the first arm body structure to achieve electrical isolation between the power supply and the support.

14. The mobile contact network according to claim 4, characterized in that: It also includes a first gravity contact network compensation device and a power supply device. The first gravity contact network compensation device is arranged at one end of the mobile contact network, and the power supply device is arranged at the other end of the mobile contact network. The first gravity contact network compensation device and the power supply device respectively adjust the working state of the mobile contact network from both ends of the mobile contact network; the power supply device is used to pull the load-bearing cable and / or the contact line to move, thereby driving the wrist-arm support device to switch between the working position or the non-working position.

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