CN214523429U - Be applied to and remove contact net connection piece structure and remove contact net - Google Patents
Be applied to and remove contact net connection piece structure and remove contact net Download PDFInfo
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- CN214523429U CN214523429U CN202022632743.4U CN202022632743U CN214523429U CN 214523429 U CN214523429 U CN 214523429U CN 202022632743 U CN202022632743 U CN 202022632743U CN 214523429 U CN214523429 U CN 214523429U
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Abstract
The utility model relates to a connecting piece structure applied to a mobile contact net and the mobile contact net, which comprises a carrier cable, a contact wire and a connecting piece, and also comprises a gravity compensation device and/or a dragging mechanism; the carrier cable and the contact line are both fixed at one end of the connecting piece, and the other end of the connecting piece is connected with the gravity compensation device and/or the dragging mechanism through the pull rope.
Description
The application is a divisional application of Chinese patent application 202020958513.4 entitled "constant tension compensation type mobile contact net" filed on 30.5.2020.
Technical Field
The utility model belongs to remove the contact net field, concretely relates to use permanent tension compensation formula removal contact net on electric railway.
Background
With the propulsion of the electric traction of railways, the electric locomotives are adopted to replace the internal combustion locomotives in the transportation of China railway trunks. Electrification is realized in a cargo loading and unloading line or warehousing maintenance. At present, a rigid movable contact net system is adopted, but the existing rigid movable contact net system has extremely high cost, a complex structure and inconvenient installation, has high requirements on the use conditions of the line and has poor structural reliability.
Therefore, whether the flexible contact net with lower cost, more reliable operation and simpler maintenance can be applied to a cargo loading and unloading line or a warehousing overhaul site becomes a technical problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
Through the continuous research and practice of the applicant, a flexible constant tension compensation type mobile contact network for cargo handling is provided, and compared with a rigid contact network, the flexible contact network is lower in cost, more reliable in operation, less influenced by weather and simpler in maintenance.
In order to achieve the purpose, the utility model provides a constant tension compensation type mobile contact network, which comprises a mobile contact network, a gravity compensation device and a dragging mechanism, wherein a carrier cable and/or a contact wire are arranged in the mobile contact network;
the gravity compensation device is arranged at one end of the catenary and/or the contact line, the other end of the catenary and/or the contact line is fixed on the dragging mechanism, and the dragging mechanism drives the catenary and/or the contact line to move so as to adjust the working state of the whole movable contact line.
Further, the dragging mechanism drives the carrier cable and/or the contact line to move, so that the working state of the whole movable contact line is adjusted as follows:
the gravity compensation device and the dragging mechanism enable a catenary and/or a contact line in a movable contact net to be in a tension state; the dragging mechanism drives the carrier cable and/or the contact line to move to one side of the rail horizontally; or the dragging mechanism drives the carrier cable and/or the contact line to move horizontally above the rail.
Further, the dragging mechanism has three schemes:
the first scheme is as follows: the dragging mechanism comprises a winch, the other end of the catenary cable and/or the contact line is fixed on the winch, and the winch drives the horizontal side of the catenary cable and/or the contact line to move to one side of the rail or move above the rail;
the second scheme is as follows: the dragging mechanism comprises an electric push rod, the other end of the carrier cable and/or the contact line is fixed at the output end of the electric push rod, and the electric push rod drives the horizontal side of the carrier cable and/or the contact line to move to one side of the rail or move above the rail; or
In the third scheme: the dragging mechanism comprises a hydraulic push rod, the other end of the carrier cable and/or the contact line is fixed at the output end of the hydraulic push rod, and the hydraulic push rod drives the horizontal side of the carrier cable and/or the contact line to move to one side of the rail or move above the rail.
Furthermore, the gravity compensation device comprises a weight, and the weight is arranged at one end of a catenary and/or a contact line in the movable contact network.
Furthermore, the movable contact net is provided with a plurality of rotating swing arms capable of rotating around the stand column, and the carrier cable and/or the contact line are/is fixed on the rotating swing arms.
Further, when the dragging mechanism comprises a winch, the winch positively rotates to drag the whole catenary cable and/or contact line to move towards the right, and the plurality of rotary swing arms are swung above the rail together, so that the catenary cable and/or the contact line are driven to move to the upper part of the rail horizontally; the winch rotates reversely, the weight gravity drives the whole carrier cable and/or contact line to move towards the left, and the rotary swing arms swing together to one side edge of the rail so as to drive the carrier cable and/or the contact line to move to one side edge horizontally;
when the dragging mechanism comprises an electric push rod, the output shaft of the electric push rod retracts to drag the whole carrier cable and/or contact line to move towards the right, and a plurality of rotary swing arms are swung above the rail together, so that the carrier cable and/or the contact line are driven to move horizontally above the rail; the electric push rod output shaft is pushed out, the weight gravity drives the whole carrier cable and/or contact line to move towards the left, and the rotary swing arms swing together to one side edge of the rail, so that the carrier cable and/or contact line is driven to move to one side edge horizontally; or
When the dragging mechanism comprises a hydraulic push rod, the output shaft of the hydraulic push rod retracts to drag the whole carrier cable and/or contact line to move towards the right, and a plurality of rotating swing arms are swung above the rail together, so that the carrier cable and/or the contact line are driven to move horizontally above the rail; the hydraulic push rod output shaft is pushed out, the weight gravity drives the whole carrier cable and/or contact line to move towards the left, and the rotary swing arms swing together to one side edge of the rail, so that the carrier cable and/or contact line is driven to move to one side edge horizontally.
Furthermore, an insulator for electrical isolation is arranged between the other end of the carrier cable and/or the contact wire and the dragging mechanism.
Furthermore, at least one rotating swing arm is provided with a driving device, the driving device drives at least one rotating swing arm to rotate and provide auxiliary rotating force in the same acting force direction as the dragging mechanism, so that the dragging mechanism is assisted to drive the horizontal side of the catenary and/or the contact line to move to one side of the rail; or the carrier cable and/or the contact line are driven to move horizontally to the upper side of the rail.
Preferably, the driving device comprises an electric push rod, a hydraulic push rod, a rotating motor or a pulling motor; when the driving device is an electric push rod, an output shaft of the electric push rod extends out to push the rotating swing arm to rotate so as to provide auxiliary rotating force in the direction of the same acting force as that of the dragging mechanism, and the carrier cable and/or the contact line are/is driven to move to the upper side of the rail horizontally; the output shaft of the electric push rod retracts to pull the rotating swing arm to rotate so as to provide auxiliary rotating force in the direction same as the acting force of the dragging mechanism, and the horizontal side of the carrier cable and/or the contact line is driven to move to one side of the rail;
when the driving device is a hydraulic push rod, an output shaft of the hydraulic push rod extends out to push the rotating swing arm to rotate so as to provide auxiliary rotating force in the direction of the same acting force as that of the dragging mechanism, and the catenary cable and/or the contact line are/is driven to move to the upper part of the rail horizontally; the output shaft of the hydraulic push rod retracts to pull the rotating swing arm to rotate so as to provide auxiliary rotating force in the direction same as the acting force of the dragging mechanism, and the horizontal side of the carrier cable and/or the contact line is driven to move to one side of the rail;
when the driving device is a rotating motor, the rotating swing arm is arranged on the upright post through a rotating shaft, the rotating motor rotates positively to drive the rotating swing arm to rotate, and auxiliary rotating force in the same acting force direction as that of the dragging mechanism is provided, so that the horizontal side of the catenary and/or the contact line is driven to move above the rail; the rotating motor reversely rotates to drive the rotating swing arm to rotate and provide auxiliary rotating force in the same acting force direction as the dragging mechanism, so that the carrier cable and/or the contact line is driven to horizontally move to one side of the rail; or
When the driving device is an external pulling motor, the pulling motor rotates forwards to pull the rotating swing arm to rotate, and provides auxiliary rotating force in the same acting force direction as the dragging mechanism, so that the catenary and/or the contact line are driven to move to the upper side of the rail horizontally; the pulling motor reversely pulls the rotating swing arm to rotate, and provides auxiliary rotating force in the same acting force direction as the dragging mechanism, so that the catenary cable and/or the contact line are driven to move horizontally to one side of the rail.
The utility model adopts the above technical scheme, the utility model discloses following beneficial effect has at least:
1) the utility model discloses well gravity compensation arrangement sets up in the one end of carrier cable and/or contact wire, the other end of carrier cable and/or contact wire is fixed on drive mechanism, drive carrier cable and/or contact wire through drive mechanism and remove thereby adjust the operating condition of whole removal contact net, adopt the contact net bearing that the utility model provides, simplified system architecture, the operation is reliable and stable; the cable is stressed more uniformly, the construction period is short, the influence of factors such as weather and temperature difference is small, the cable can be widely applied to various severe environments, the service life is long, the cable can be improved on the basis of the existing contact network, and the cable has the advantages of convenience in installation and maintenance and the like.
2) And adopt the utility model provides a constant tension compensation formula removes contact net can satisfy train goods handling line or the demand of warehousing maintenance effectively, has improved work efficiency, very big expense of purchasing diesel locomotive, saved current to the diesel locomotive allocate, cost of labor such as maintenance and repair.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1A is a front view of the constant tension compensation type mobile contact network of the present invention;
fig. 1B is a top view of the constant tension compensation type mobile contact system of the present invention, which is located right above the rail;
fig. 1C is a top view of the constant tension compensation type moving contact system of the present invention on one side of the rail;
fig. 2 is a schematic structural view of the mobile contact system of the utility model adopting a winch;
fig. 3 is a schematic structural view of the mobile contact system of the present invention using the electric push rod;
fig. 4 is a schematic structural view of the mobile contact system of the present invention with insulators;
fig. 5 is a schematic structural view of the driving device in the mobile contact system of the present invention being an electric push rod;
fig. 6 is a schematic structural view of the driving device in the mobile contact system of the present invention as a rotating motor;
fig. 7 is the utility model discloses drive arrangement is external pulling motor structure schematic diagram in the removal contact net.
In the figure: 1. moving the contact net; 2. a gravity compensation device; 3. a dragging mechanism; 4. a balance weight; 5. a catenary cable; 6. a contact line; 7. a column; 8. rotating the swing arm; 9. a winch; 10. an electric push rod in the dragging mechanism; 11. a connecting member; 12. an insulator; 13. an electric push rod in the driving device; 14. rotating the motor; 15a, a pulling motor; 15b, the other pull motor.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like 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. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
As shown in fig. 1A, 1B and 1C, the present embodiment provides a constant tension compensation type mobile catenary 1, including a mobile catenary 1, a gravity compensation device 2 and a dragging mechanism 3, where a catenary 5 and/or a contact line 6 are arranged in the mobile catenary 1;
the gravity compensation device 2 is arranged at one end of the catenary 5 and/or the contact line 6, the other end of the catenary 5 and/or the contact line 6 is fixed on the dragging mechanism 3, and the dragging mechanism 3 drives the catenary 5 and/or the contact line 6 to move so as to adjust the working state of the whole mobile contact network 1.
In this embodiment, the dragging mechanism 3 drives the carrier cable 5 and/or the contact line 6 to move, so as to adjust the working state of the whole mobile contact system 1: the gravity compensation device 2 and the dragging mechanism 3 enable a catenary 5 and/or a contact line 6 in the mobile contact network 1 to be in a tension state; the dragging mechanism 3 drives the carrier cable 5 and/or the contact line 6 to move to one side of the rail horizontally; alternatively, the dragging mechanism 3 drives the carrier cable 5 and/or the contact line 6 to move horizontally to the upper side of the rail.
It should be added that, in this embodiment, the gravity compensation device 2 includes a weight 4, and the weight 4 is disposed at one end of a catenary 5 and/or a contact line 6 in the mobile contact system 1. The movable contact net 1 is provided with a plurality of rotary swing arms 8 which can rotate around the upright posts 7, and the carrier cable 5 and/or the contact line 6 are fixed on the rotary swing arms 8.
As further described with reference to fig. 1B and 1C, the left movement of the catenary 5 is defined as driving the contact line 6 to move to one side of the rail (open state, which is the state where the train is parked in a loading/unloading or maintenance state), and the right movement of the catenary 5 is defined as driving the contact line 6 to swing back to the right of the rail (the pantograph of the train is lifted up to take power from the contact line 6, which is the state where the train drives in or out of the station), although this definition is not a limitation of the protection of the present invention, similarly, according to the actual situation, the right movement of the catenary 5 can be defined as driving the contact line 6 to move to one side of the rail, but only the problem that the contact line 6 rotates from the left side to one side of the rail or rotates from the right side to one side of the rail is solved, and the overall principle is the same, and is not described herein.
Before preparing the electric locomotive to be delivered, the dragging mechanism 3 drives the carrier cable 5 and/or the contact line 6 to horizontally move to the upper part of the rail; the movable contact net is in a closed working state, and preparation for receiving and dispatching the electric locomotive is made;
when the goods loading and unloading operation is carried out, the dragging mechanism 3 drives the horizontal side of the carrier cable 5 and/or the contact line 6 to move to one side of the rail, the movable contact net is in an open and stop state, the space above the goods loading and unloading line is vacated, and the goods loading and unloading operation can be started.
This embodiment provides three solutions with respect to the dragging mechanism 3:
the first scheme is as follows: referring to fig. 2A, 2B and 2C of the accompanying drawings, in this embodiment, the dragging mechanism 3 adopts a winch 9, the winch 9 is shown to be installed on the column 7, and according to the actual situation, the winch may also be installed on the gantry, in this embodiment, the other end of the catenary 5 and/or the contact line 6 is fixed to the winch 9, and the winch 9 drives the catenary 5 and/or the contact line 6 to move horizontally to one side of the rail or above the rail;
the specific working mode is as follows: the winch 9 positively rotates to drag the whole carrier cable 5 and/or the contact wire 6 to move to the right, and the balance weight 4 and the winch 9 provide tension from two ends of the carrier cable 5 and/or the contact wire 6, so that the carrier cable 5 and/or the contact wire 6 are in a tension state in the whole actuating process; a plurality of rotary swing arms 8 swing above the rail together, and the balance weight rises, so that the carrier cable 5 and/or the contact line 6 are driven to move horizontally above the rail;
the winch 9 rotates reversely, the balance weight 4 drives the whole carrier cable 5 and/or the contact wire 6 to move leftwards by gravity, the balance weight descends, and the rotary swing arms 8 swing together to one side of the rail, so that the carrier cable 5 and/or the contact wire 6 are driven to horizontally move to one side;
scheme II: referring to fig. 3A, 2B and 2C, in the present embodiment, the dragging mechanism 3 employs an electric push rod 10, the other end of the messenger wire 5 and/or the contact wire 6 is fixed at the output end of the electric push rod 10, and the electric push rod 10 drives the horizontal side of the messenger wire 5 and/or the contact wire 6 to move to one side of the rail or move above the rail;
the specific working mode is as follows: the output shaft of the electric push rod 10 retracts to drag the whole carrier cable 5 and/or the contact wire 6 to move to the right, and the balance weight 4 and the electric push rod 10 provide tension from the two ends of the carrier cable 5 and/or the contact wire 6, so that the carrier cable 5 and/or the contact wire 6 are in a tensioning state in the whole actuating process; the balance weight rises, and a plurality of rotary swing arms 8 swing above the rail together, so that the carrier cable 5 and/or the contact line 6 are driven to horizontally move above the rail; the output shaft of the electric push rod 10 is pushed out, the balance weight 4 drives the whole carrier cable 5 and/or the contact wire 6 to move leftwards, the balance weight descends, and the rotary swing arms 8 swing together to one side of the rail, so that the carrier cable 5 and/or the contact wire 6 are driven to horizontally move to one side;
the third scheme is as follows: the installation mode and the working principle of the hydraulic push rod are the same as those of the second scheme, referring to fig. 2, and no drawing is provided here, in this embodiment, the dragging mechanism 3 adopts the hydraulic push rod, the other end of the catenary 5 and/or the contact wire 6 is fixed at the output end of the hydraulic push rod, and the hydraulic push rod drives the horizontal side of the catenary 5 and/or the contact wire 6 to move to one side of the rail or move above the rail.
The specific working mode is as follows: the hydraulic push rod output shaft retracts to drag the whole carrier cable 5 and/or the contact line 6 to move to the right, the balance weight rises, and the rotary swing arms 8 swing together above the rail, so that the carrier cable 5 and/or the contact line 6 are driven to horizontally move to the upper side of the rail; the output shaft of the hydraulic push rod is pushed out, the balance weight 4 drives the whole carrier cable 5 and/or the contact wire 6 to move leftwards under the action of gravity, the balance weight descends, and the rotary swing arms 8 swing together to one side of the rail, so that the carrier cable 5 and/or the contact wire 6 are driven to move horizontally to one side.
As shown in fig. 4, in the above three solutions, an insulator 12 for electrical isolation is further disposed between the other end of the catenary 5 and/or the contact wire 6 and the dragging mechanism 3. Fig. 4 shows that the other ends of the carrier wire 5 and the contact wire 6 are fixed at one end of the connecting piece 11, and an insulator 12 is arranged in a pull rope fixed at the other end of the connecting piece 11.
As an auxiliary scheme, on the basis of the dragging mechanism 3, the original rotating swing arms 8 in the mobile overhead line system 1 are directly adopted, and a plurality of rotating swing arms 8 are driven to become power swing arms to provide auxiliary rotating force;
the specific mode is as follows: the driving device is arranged on at least one rotating swing arm and drives the at least one rotating swing arm to rotate so as to provide auxiliary rotating force in the direction same as the acting force of the dragging mechanism, so that the dragging mechanism is assisted to drive the horizontal side of the catenary and/or the contact line to move to one side of the rail; or the carrier cable and/or the contact line are driven to move horizontally to the upper side of the rail.
This example provides four embodiments regarding the driving means. Now, the following is explained:
as shown in fig. 5, when the driving device is an electric push rod 13, the output shaft of the electric push rod 13 extends to push the rotating swing arm to rotate to provide an auxiliary rotating force in the same acting force direction as the dragging mechanism, so as to drive the horizontal side of the messenger wire and/or the contact line to move above the rail, as shown in fig. 5B; the output shaft of the electric push rod 13 retracts to pull the rotating swing arm to rotate to provide an auxiliary rotating force in the same acting force direction as the dragging mechanism, and the horizontal side of the carrier cable and/or the contact line is driven to move to one side of the rail as shown in fig. 5C;
when driven by means of a hydraulic push rod, the mounting position and the operating principle are described with reference to fig. 4, which is only given by text. The output shaft of the hydraulic push rod extends out to push the rotating swing arm to rotate so as to provide auxiliary rotating force in the direction same as the acting force of the dragging mechanism, and the carrier cable and/or the contact line are/is driven to move to the upper part of the rail horizontally; the output shaft of the hydraulic push rod retracts to pull the rotating swing arm to rotate so as to provide auxiliary rotating force in the direction same as the acting force of the dragging mechanism, and the horizontal side of the carrier cable and/or the contact line is driven to move to one side of the rail;
as shown in fig. 6, when the driving device is a rotating motor 14, the rotating swing arm is mounted on the column through a rotating shaft, and the rotating motor rotates forward to drive the rotating swing arm to rotate, so as to provide an auxiliary rotating force in the same acting force direction as the dragging mechanism, thereby driving the horizontal side of the messenger wire and/or the contact line to move above the rail, as shown in fig. 5B; the rotating motor rotates reversely to drive the rotating swing arm to rotate, and provides auxiliary rotating force in the same acting force direction as the dragging mechanism, so as to drive the horizontal side of the catenary cable and/or the contact line to move to one side of the rail, as shown in fig. 5C;
as shown in fig. 7, when the driving device is an external pulling motor, the pulling motor rotates forward to pull the rotating swing arm to rotate, and provides an auxiliary rotating force in the same acting force direction as the dragging mechanism, so as to drive the catenary and/or the contact line to move horizontally above the rail; the pulling motor reversely pulls the rotating swing arm to rotate, and provides auxiliary rotating force in the same acting force direction as the dragging mechanism, so that the catenary cable and/or the contact line are driven to move horizontally to one side of the rail.
As shown in fig. 7, it should be added that, regarding the pulling motors, only one embodiment is provided, and not limiting to the present patent, two pulling motors are respectively disposed on the additionally added columns at both sides of the rotating swing arm, and the pulling ropes of the two pulling motors both act on the rotating swing arm, assuming that one of the pulling motors 15a is rotating forward to take up the wires and pull the rotating swing arm above the rail, and at the same time, the other pulling motor 15b is rotating backward to pay out the wires. In the same way, the other pulling motor 15b rotates forward to take up the wire and pulls the rotating swing arm to one side of the rail, and meanwhile, one pulling motor 15a rotates reversely to pay off the wire. The scheme is that two pulling motors are adopted to drive the swing arms to swing above the rails or to one side of the rails from two sides of the rotating swing arms.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. Be applied to connecting piece structure of removing contact net, its characterized in that: the cable comprises a carrier cable, an insulator and a gravity compensation device;
the carrier cable is connected with the gravity compensation device through an insulator.
2. Be applied to connecting piece structure of removing contact net, its characterized in that: the device comprises a contact wire, an insulator and a gravity compensation device;
the contact wire is connected with the gravity compensation device through an insulator.
3. Be applied to connecting piece structure of removing contact net, its characterized in that: comprises a connecting piece and a carrier cable; the device also comprises a gravity compensation device and/or a dragging mechanism;
the carrier cable is connected with the gravity compensation device and/or the dragging mechanism through a connecting piece.
4. Be applied to connecting piece structure of removing contact net, its characterized in that: comprises a connecting piece and a contact wire; the device also comprises a gravity compensation device and/or a dragging mechanism;
the contact line is connected with the gravity compensation device and/or the dragging mechanism through a connecting piece.
5. Be applied to connecting piece structure of removing contact net, its characterized in that: the device comprises a carrier cable, a contact line and a connecting piece, and also comprises a gravity compensation device and/or a dragging mechanism;
the carrier cable and the contact line are both fixed at one end of the connecting piece, and the other end of the connecting piece is connected with the gravity compensation device and/or the dragging mechanism through the pull rope.
6. The connector structure according to claim 5, wherein: and an insulator for electrical isolation is arranged between the other end of the carrier cable and/or the contact wire and the dragging mechanism and/or the gravity compensation device.
7. The connector structure according to claim 6, wherein: the carrier cable and the contact wire are both fixed at one end of the connecting piece, and the insulator is arranged between the other end of the connecting piece and the dragging mechanism and/or the gravity compensation device.
8. The connector structure according to claim 6, wherein: the catenary is connected to one end of the connecting piece through the insulator, the contact wire is connected to one end of the connecting piece through the insulator, and the other end of the connecting piece is connected with the gravity compensation device and/or the dragging mechanism through the pull rope.
9. The connector structure according to any one of claims 3 to 8, wherein: the gravity compensation device comprises a balance weight, and the dragging mechanism comprises a pulling motor or a winch.
10. Remove contact net, its characterized in that: the connecting piece structure of any one of the preceding claims 1 to 9 is used in a mobile catenary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022632743.4U CN214523429U (en) | 2020-05-30 | 2020-05-30 | Be applied to and remove contact net connection piece structure and remove contact net |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020958513.4U CN212765832U (en) | 2020-05-30 | 2020-05-30 | Constant tension compensation type mobile contact net |
| CN202022632743.4U CN214523429U (en) | 2020-05-30 | 2020-05-30 | Be applied to and remove contact net connection piece structure and remove contact net |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020958513.4U Division CN212765832U (en) | 2020-05-30 | 2020-05-30 | Constant tension compensation type mobile contact net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214523429U true CN214523429U (en) | 2021-10-29 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022632743.4U Active CN214523429U (en) | 2020-05-30 | 2020-05-30 | Be applied to and remove contact net connection piece structure and remove contact net |
| CN202020958513.4U Active CN212765832U (en) | 2020-05-30 | 2020-05-30 | Constant tension compensation type mobile contact net |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020958513.4U Active CN212765832U (en) | 2020-05-30 | 2020-05-30 | Constant tension compensation type mobile contact net |
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| Country | Link |
|---|---|
| CN (2) | CN214523429U (en) |
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2020
- 2020-05-30 CN CN202022632743.4U patent/CN214523429U/en active Active
- 2020-05-30 CN CN202020958513.4U patent/CN212765832U/en active Active
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| CN212765832U (en) | 2021-03-23 |
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