Wire tightener

Abstract

The utility model provides a wire tightener, which is used for being fixed on a carrier cable and tensioning an elastic dropper connected to a contact wire, and comprises a wire pulling device used for clamping the elastic dropper; the wire tightening device is provided with a clamping assembly and an electric wire tightening assembly, the clamping assembly is used for clamping the carrier cable, the electric wire tightening assembly is connected with a pull wire, and the electric wire tightening assembly is used for winding and unwinding the pull wire; the free end of the stay wire is connected with one end of the stay wire device and used for driving the stay wire device to tension the elastic dropper. And the fastening wire clamp is used for connecting the elastic dropper and the carrier cable. The tightener provided by the utility model is convenient to operate and can realize automatic tightening of the elastic dropper.

Description

Technical Field

[0001] The present disclosure generally relates to the field of contact network technology, and in particular to a tensioner. Background Art

[0002] The overhead contact network is a high-voltage transmission line that is set up in a zigzag shape above the rails in an electrified railway and is used by the pantograph to draw current. The overhead contact network is the main structure of the railway electrification project and is a special form of transmission line set up above the railway line to supply power to electric locomotives. It consists of contact suspension, support device, positioning device, and pillars.

[0003] The existing contact suspension method is to set up load-bearing cables on the pillars, and the contact wire is set up between the pillars and suspended under the load-bearing cables through elastic suspension strings to avoid the problem of poor flow conditions caused by sagging of the contact wire. Therefore, the installation of elastic suspension strings is an important part of the construction and maintenance of the contact network, which directly affects the stability of the contact network. The installation of elastic suspension strings requires manual operation at high altitudes, which is difficult, time-consuming and labor-intensive. Summary of the invention

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a wire tensioner to solve the above problems.

[0005] The present application provides a tensioner, which is used to be fixed on a load-bearing cable and tighten an elastic suspension string connected to a contact line, comprising:

[0006] A wire pulling device, the wire pulling device is used to clamp the elastic suspension string;

[0007] A tensioning device, the tensioning device is provided with a clamping assembly and an electric tensioning assembly, the clamping assembly is used to clamp the load-bearing cable, the electric tensioning assembly is connected with a pull wire, and the electric tensioning assembly is used to retract and release the pull wire; the free end of the pull wire is connected to one end of the tensioning device, and is used to drive the pull wire device to tighten the elastic suspension string;

[0008] A fastening wire clamp is used to connect the elastic suspension string and the load-bearing cable.

[0009] According to the technical solution provided in the embodiment of the present application, the electric tightening assembly includes:

[0010] Hold the handle;

[0011] A driving member, the driving member is installed at one end of the gripping handle and has a first rotating shaft, one end of the pulling wire away from the pulling wire device is wound around the first rotating shaft, and the driving member drives the first rotating shaft to rotate to retract and release the pulling wire;

[0012] A driving power source is installed at the other end of the holding handle.

[0013] According to the technical solution provided in the embodiment of the present application, the clamping assembly includes:

[0014] A clamping handle, the clamping handle being rotatably mounted on the outer wall of the driving member;

[0015] A first clamping portion and a second clamping portion, wherein the first clamping portion is mounted on one side of the driving member, and the second clamping portion is mounted on a side of the clamping handle close to the first clamping portion;

[0016] A first elastic member, wherein the first elastic member connects the clamping handle and the driving member so that the second clamping portion has a movement tendency to approach the first clamping portion in a natural state.

[0017] According to the technical solution provided in the embodiment of the present application, the wire pulling device includes a device body and a wire clamping assembly and a connecting assembly arranged on the device body, the connecting assembly is rotatable around the device body and connected to the wire pulling; the wire clamping assembly includes:

[0018] a first wire clamping portion and a second wire clamping portion, wherein the first wire clamping portion is mounted on the device body, and the second wire clamping portion is mounted on the connecting assembly;

[0019] A second elastic member is provided, wherein the second elastic member connects the device body and the connecting assembly so that the second wire clamping portion has a movement tendency to approach the first wire clamping portion in a natural state.

[0020] According to the technical solution provided in the embodiment of the present application, the connection component includes:

[0021] A first hinged part and a second hinged part, one end of the first hinged part is hinged to the device body, and the other end is hinged to the second hinged part, and the free end of the second hinged part is connected to one end of the pull wire; the second wire clamping part is hingedly installed on the first hinged part.

[0022] According to the technical solution provided in the embodiment of the present application, the wire pulling device also includes a first limiting portion, which is provided with an opening for the second hinged portion to pass through, and the second hinged portion passes through the opening to limit the rotation angle of the second hinged portion.

[0023] According to the technical solution provided in the embodiment of the present application, a second limiting portion is provided on the device body, and the second limiting portion is arranged on a side of the second wire clamping portion away from the first wire clamping portion, for limiting the second wire clamping portion.

[0024] According to the technical solution provided in the embodiment of the present application, a plurality of protruding teeth are provided on the side where the first wire clamping portion and the second wire clamping portion are close to each other.

[0025] According to the technical solution provided in the embodiment of the present application, the pull wire bypasses the clamping handle and is connected to the driving member.

[0026] According to the technical solution provided in the embodiment of the present application, the wire tightening device further includes a control module, which is electrically connected to the driving member and is used to adjust the retraction and extension torque of the driving member.

[0027] Compared with the prior art, the beneficial effects of the present application are: by setting a wire pulling device, the stability of the connection of the elastic suspension string is ensured when adjusting the elastic suspension string; by setting a wire tightening device, the wire tightening device includes a clamping assembly and an electric wire tightening assembly, the wire tightening device can be clamped on the load-bearing cable, and the electric wire tightening assembly is connected to the wire pulling device through a wire, so that the elastic suspension string can be adjusted by automatically retracting and releasing the wire, and then the contact line can be adjusted to avoid the contact line from sagging. The wire tightening device provided by the present application has a simple structure, is easy to operate, and can automatically adjust the tension of the elastic suspension string on the contact line, effectively improving the efficiency of the elastic suspension string installation link. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0029] Figure 1 A schematic diagram of the tensioner structure provided for this application;

[0030] Figure 2 for Figure 1 The structural diagram of the tensioning device part;

[0031] Figure 3 for Figure 1 The structural diagram of the middle wire drawing device;

[0032] Figure 4 This is a schematic diagram of the enlarged structure at A in 3.

[0033] Figure numbers: 1. load-bearing cable; 2. elastic suspension string; 3. wire pulling device; 4. wire tightening device; 5. clamping assembly; 5-1. clamping handle; 5-2. first clamping part; 5-3. second clamping part; 6. wire tightening assembly; 7. wire pulling; 8. wire tightening clamp; 9. screw; 10. holding handle; 11. driving member; 12. driving power supply; 13. device body; 13-1. first limiting part; 13-2. second limiting part; 14. wire clamping assembly; 14-1. first wire clamping part; 14-2. second wire clamping part; 14-3. second elastic member; 15. convex teeth; 16. connecting assembly; 16-1. first hinged part; 16-2. second hinged part. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Please refer to Figure 1-Figure 4 The present application provides a tensioner, which is used to be fixed on a load-bearing cable 1 and tighten an elastic suspension string 2 connected to a contact line, comprising:

[0037] A wire pulling device 3, the wire pulling device 3 is used to clamp the elastic suspension string 2;

[0038] A tensioning device 4, wherein the tensioning device 4 is provided with a clamping assembly 5 and an electric tensioning assembly 6, wherein the clamping assembly 5 is used to clamp the load-bearing cable 1, and the electric tensioning assembly 6 is connected with a pull wire 7, and the electric tensioning assembly 6 is used to retract and release the pull wire 7; the free end of the pull wire 7 is connected to one end of the tensioning device 3, and is used to drive the pull wire device 3 to tighten the elastic suspension string;

[0039] A fastening wire clamp 8 is used to connect the elastic suspension string 2 and the load-bearing cable 1.

[0040] When the contact line is erected between two pillars, it is easy to sag, resulting in poor flow conditions. The improvement method is to erect the load-bearing cable 1 between the pillars at both ends of the contact line. The load-bearing cable 1 is arranged above the contact line, and one end of the elastic suspension string 2 is connected to the sagging position of the contact line, and the other end is connected to the load-bearing cable 1. The tightening degree of the elastic suspension string 2 is adjusted to assist in the suspension of the contact line.

[0041] Specifically, the position of the fastening wire clamp 8 for connecting the load-bearing cable 1 and the elastic suspension string 2 is an open-close structure, and after the load-bearing cable 1 and the elastic suspension string 2 are installed, they are fastened by screws 9 .

[0042] Specifically, when the construction is carried out by the tensioner provided by the present application, first one end of the elastic suspension string 2 is connected to the contact line, and the other end of the elastic suspension string 2 is clamped by the tensioner 3; then the construction personnel hold the tensioner 4, and clamp the tensioner 4 and hang it on the load-bearing cable 1 by the clamping assembly 5 on the tensioner 4; then the tensioner 7 is tightened by the electric tensioner assembly 6, so that the tensioner 3 pulls the elastic suspension string 2 to pull the contact line to a suitable position; when the contact line is in a suitable position, the construction personnel clamp and fix the end of the elastic suspension string 2 away from the contact line to the load-bearing cable 1 by the tightening wire clamp 8, thereby fixing the elastic suspension string 2. The tensioner provided by the present application makes it more convenient to install the elastic suspension string 2, without the need to manually pull the elastic suspension string 2 and can control the tightening degree of the elastic suspension string 2, thereby improving the convenience and efficiency of installation.

[0043] Furthermore, the electric tensioning assembly 6 comprises:

[0044] Holding handle 10;

[0045] A driving member 11, the driving member 11 is installed at one end of the gripping handle 10 and has a first rotating shaft, one end of the pull wire 7 away from the pull wire device 3 is wound around the first rotating shaft, and the driving member 11 drives the first rotating shaft to rotate to retract and release the pull wire 7;

[0046] A driving power source 12 is installed at the other end of the gripping handle 10 .

[0047] Specifically, the driving member 11 and the driving power source 12 are respectively installed at the two ends of the gripping handle 10, so that the weight of the two ends of the gripping handle 10 is balanced, which is convenient for grabbing the tensioning device 4. The driving member 11 includes a driving motor, which is powered by the driving power source 12 and is controlled to start and stop by a switch. One end of the pull wire 7 is connected to the first rotating shaft, and the driving motor is used to drive the first rotating shaft to rotate, so that the pull wire 7 is retracted and released, and then the pull wire device 3 drives the elastic suspension string 2 to pull and release the contact wire.

[0048] Furthermore, the wire tightening device 4 further comprises a control module, which is electrically connected to the driving member 11 and is used to adjust the retraction and extension torque of the driving member 11 .

[0049] Specifically, the control module includes an adjustment button and a display screen. The retraction and extension torque of the driving member 11 can be changed by adjusting the adjustment button. The retraction and extension torque after adjustment can be displayed on the display screen so that construction personnel can observe the retraction and extension torque intuitively.

[0050] Furthermore, the clamping assembly 5 comprises:

[0051] A clamping handle 5-1, wherein the clamping handle 5-1 is rotatably mounted on the outer wall of the driving member 11;

[0052] A first clamping portion 5-2 and a second clamping portion 5-3, wherein the first clamping portion 5-2 is mounted on one side of the driving member 11, and the second clamping portion 5-3 is mounted on one side of the clamping handle 5-1 close to the first clamping portion 5-2;

[0053] A first elastic member, wherein the first elastic member connects the clamping handle 5-1 and the driving member 11, so that the second clamping portion 5-3 has a movement tendency to approach the first clamping portion 5-2 in a natural state.

[0054] Specifically, the clamping handle 5-1 is rotatably mounted on the driving member 11, and the construction worker can pinch the clamping handle 5-1 while holding the gripping handle 10 to rotate the clamping handle 5-1. The first clamping portion 5-2 is fixed on the driving member 11 and extends in a direction away from the driving member 11, and the second clamping portion 5-4 is fixed on the clamping handle 5-1. A first clamping space for the load-bearing cable 1 to pass through is formed between the first clamping portion 5-2 and the second clamping portion 5-3. The first elastic member may be a spring with a reset function, and the first elastic member is arranged on the clamping handle 5-1. The structure of the first elastic member is not shown in the figure. By setting the first elastic member, the elastic force of the first elastic member makes the clamping handle 5-1 have a tendency to move away from the holding handle 10, thereby making the second clamping part 5-3 have a tendency to move toward the first clamping part 5-2. In a natural state, the second clamping part 5-3 is close to the first clamping part 5-2. By pinching the clamping handle 5-1, the second clamping part 5-3 and the first clamping part 5-2 can be separated, thereby clamping the tensioning device 4 on the load-bearing cable 1.

[0055] Furthermore, the wire pulling device 3 includes a device body 13, a wire clamping assembly 14 and a connecting assembly 16 arranged on the device body 13, wherein the connecting assembly 16 is rotatable around the device body 13 and connected to the wire pulling device 7; the wire clamping assembly 14 includes:

[0056] A first wire clamping portion 14 - 1 and a second wire clamping portion 14 - 2 , wherein the first wire clamping portion 14 - 1 is mounted on the device body 13 , and the second wire clamping portion 14 - 2 is mounted on the connecting assembly 16 ;

[0057] The second elastic member 14-3 connects the device body 13 and the connecting assembly 16 so that the second clamping portion 14-2 has a movement tendency to approach the first clamping portion 14-1 in a natural state.

[0058] Specifically, the wire clamping assembly 14 is used to clamp the elastic suspension string 2, and the wire clamping assembly 14 consists of the first wire clamping part 14-1 and the second wire clamping part 14-2. The first wire clamping part 14-1 is fixed to the edge of the device body 13, and the second wire clamping part 14-2 is installed on the connecting assembly 16; the connecting assembly 16 is used to connect with the pull wire 7, and as the pull wire 7 is retracted and released, the connecting assembly 15 can rotate relative to the device body 13. While the connecting assembly 16 rotates, the degree of clamping of the elastic suspension string 2 by the wire clamping assembly 14 can be changed. The second elastic member 14-3 is a spring that can play a reset role. The second elastic member 14-3 limits the rotation angle of the connecting component 15. In the natural state, under the action of the second elastic member 14-3, the second wire clamping part 14-2 is close to the first wire clamping part 14-1. The second wire clamping part 14-2 and the first wire clamping part 14-1 are separated by manually rotating the connecting component 16, and a second clamping space for the elastic suspension string 2 to pass through is formed between the first wire clamping part 14-1 and the second wire clamping part 14-2.

[0059] Furthermore, the connection component 16 includes:

[0060] A first hinged portion 16-1 and a second hinged portion 16-2, wherein one end of the first hinged portion 16-1 is hinged to the device body 13, and the other end is hinged to the second hinged portion 16-2, and the free end of the second hinged portion 16-2 is connected to one end of the pull wire 7; the second wire clamping portion 14-2 is hingedly installed on the first hinged portion 16-1.

[0061] Specifically, the connecting component 16 is composed of a first hinged part 16-1 and a second hinged part 16-2, one end of the second elastic member 14-3 connected to the connecting component 16 is connected to the first hinged part 16-1, and the second clamping part 14-2 is installed on the first hinged part 16-1; the second clamping part 14-2 is separated from the first clamping part 14-3 by manually rotating the first hinged part 16-1, and the elastic suspension string 2 is placed in the second clamping space and then the first hinged part 16-1 is released. Under the action of the second elastic member 14-3, the first hinged part 16-1 rebounds, so that the second clamping part 14-2 and the first clamping part 14-1 clamp the elastic suspension string 2.

[0062] Specifically, the second wire clamping portion 14-2 is hinged to the first hinged portion 16-1, so that the second wire clamping portion 14-2 can better fit the first wire clamping portion 14-1, thereby ensuring that the contact area with the elastic suspension string 2 is maximized and improving the stability of clamping the elastic suspension string 2.

[0063] Furthermore, the wire pulling device 3 also includes a first limiting portion 13-1, and the first limiting portion 13-1 is provided with an opening for the second hinged portion 16-2 to pass through, and the second hinged portion 16-2 passes through the opening to limit the rotation angle of the second hinged portion 16-2.

[0064] Specifically, the first limiting portion 13-1 is integrally formed with the device body 13, and the first limiting portion 13-1 extends to the outer peripheral side of the device body 13. The first limiting portion 13-1 is annular, and the first hinged portion 16-1 passes through the first limiting portion 13-1. The first limiting portion 13-1 can limit the rotation angle of the first hinged portion 16-1. During the construction process, the wire pulling device 4 naturally droops under the action of the wire pulling wire 7, and the elastic suspension string 2 is also connected to the wire pulling device 4. Under the joint action of the wire pulling wire 7 and the elastic suspension string 2, the first hinged portion 16-1 and the second hinged portion 16-2 rotate relative to each other, and the first hinged portion 16-1 further has a tendency to move toward the first clamping portion 14-2, thereby enhancing the clamping degree of the second clamping portion 14-2 and the first clamping portion 14-1, and further ensuring the stability of clamping the elastic suspension string 2.

[0065] Furthermore, a second limiting portion 13-2 is provided on the device body 13, and the second limiting portion 13-2 is arranged on a side of the second wire clamping portion 14-2 away from the first wire clamping portion 14-1, and is used to limit the second wire clamping portion 14-2.

[0066] Specifically, the second limiting portion 13-2 is arranged near the end of the second clamping portion 14-2, one end of the second clamping portion 14-2 is limited by the second limiting portion 13-2, and the other end is limited by the first hinge portion 16-1 and the hinge axis of the device body 13.

[0067] Furthermore, a plurality of protruding teeth 15 are provided on the sides of the first wire clamping portion 14 - 1 and the second wire clamping portion 14 - 2 that are close to each other.

[0068] Specifically, the convex teeth 15 extend in a direction perpendicular to the extension direction of the elastic suspension string 2 in the second clamping space, and a plurality of the convex teeth 15 are arranged in a direction parallel to the extension direction of the elastic suspension string 2 in the second clamping space; by arranging a plurality of convex teeth 15 on the first clamping portion 14-1 and the second clamping portion 14-2, the friction force between the convex teeth 15 and the elastic suspension string 2 is enhanced, thereby ensuring stable clamping of the elastic suspension string 2.

[0069] Furthermore, the pull wire 7 passes around the clamping handle 5 - 1 and is connected to the driving member 11 .

[0070] Specifically, the pull wire 7 is wound from the side of the clamping handle 5-1 close to the first rotating shaft to the side away from the first rotating shaft, and then wound around the first rotating shaft. When the pull wire 7 is tightened, it drives the clamping handle 5-1 to move away from the holding handle 10, thereby ensuring that the first clamping part 5-2 and the second clamping part 5-3 fit more closely, thereby increasing the clamping effect on the bearing cable 1.

[0071] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A tensioner, used to be fixed on a load-bearing cable (1) and to tighten an elastic suspension string (2) connected to a contact line, characterized in that: include: A wire pulling device (3), the wire pulling device (3) being used for clamping the elastic suspension string (2); A tensioning device (4), the tensioning device (4) being provided with a clamping assembly (5) and an electric tensioning assembly (6), the clamping assembly (5) being used to clamp the load-bearing cable (1), the electric tensioning assembly (6) being connected to a pull wire (7), the electric tensioning assembly (6) being used to retract and release the pull wire (7); the free end of the pull wire (7) being connected to one end of the tensioning device (3) and being used to drive the pull wire device (3) to tighten the elastic suspension string (2); A fastening wire clamp (8), wherein the fastening wire clamp (8) is used to connect the elastic suspension string (2) and the load-bearing cable (1).

2. The tensioner according to claim 1, characterized in that: The electric tightening wire assembly (6) comprises: A grip handle (10); A driving member (11), the driving member (11) being mounted on one end of the gripping handle (10) and having a first rotating shaft, one end of the pulling wire (7) away from the pulling wire device (3) being wound around the first rotating shaft, the driving member (11) driving the first rotating shaft to rotate so as to retract and release the pulling wire (7); A driving power source (12) is installed at the other end of the holding handle (10).

3. The tensioner according to claim 2, characterized in that: The clamping assembly (5) comprises: A clamping handle (5-1), wherein the clamping handle (5-1) is rotatably mounted on the outer wall of the driving member (11); A first clamping portion (5-2) and a second clamping portion (5-3), wherein the first clamping portion (5-2) is mounted on one side of the driving member (11), and the second clamping portion (5-3) is mounted on a side of the clamping handle (5-1) close to the first clamping portion (5-2); A first elastic member, wherein the first elastic member connects the clamping handle (5-1) and the driving member (11), so that in a natural state, the second clamping portion (5-3) has a movement tendency to approach the first clamping portion (5-2).

4. The tensioner according to claim 3, characterized in that: The wire pulling device (3) comprises a device body (13), a wire clamping assembly (14) and a connecting assembly (16) arranged on the device body (13); the connecting assembly (16) is rotatable around the device body (13) and is connected to the pulling wire (7); the wire clamping assembly (14) comprises: a first wire clamping portion (14-1) and a second wire clamping portion (14-2), wherein the first wire clamping portion (14-1) is mounted on the device body (13), and the second wire clamping portion (14-2) is mounted on the connecting assembly (16); A second elastic member (14-3), wherein the second elastic member (14-3) connects the device body (13) and the connecting assembly (16), so that in a natural state, the second wire clamping portion (14-2) has a movement tendency to approach the first wire clamping portion (14-1).

5. The tensioner according to claim 4, characterized in that: The connection assembly (16) comprises: A first hinged portion (16-1) and a second hinged portion (16-2), wherein one end of the first hinged portion (16-1) is hinged to the device body (13), and the other end is hinged to the second hinged portion (16-2), and the free end of the second hinged portion (16-2) is connected to one end of the pull wire (7); the second wire clamping portion (14-2) is hingedly mounted on the first hinged portion (16-1).

6. The tensioner according to claim 5, characterized in that: The wire pulling device (3) further comprises a first limiting portion (13-1), wherein the first limiting portion (13-1) is provided with an opening for the second hinged portion (16-2) to pass through, and the second hinged portion (16-2) passes through the opening to limit the rotation angle of the second hinged portion (16-2).

7. The tensioner according to claim 6, characterized in that: The device body (13) is provided with a second limiting portion (13-2), which is arranged on a side of the second wire clamping portion (14-2) away from the first wire clamping portion (14-1) and is used to limit the second wire clamping portion (14-2).

8. The tensioner according to claim 7, characterized in that: A plurality of protruding teeth (15) are provided on the sides of the first wire clamping portion (14-1) and the second wire clamping portion (14-2) that are close to each other.

9. The wire tensioner according to claim 8, characterized in that: The pull wire (7) passes around the clamping handle (5-1) and is connected to the driving member (11).

10. The wire tensioner according to claim 9, characterized in that: The wire tightening device (4) further comprises a control module, wherein the control module is electrically connected to the driving member (11) and is used to adjust the retraction and extension torque of the driving member (11).

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