Suspension type tension detection device for monitoring electrified railway contact network

Abstract

The utility model relates to the technical field of electrified railway construction and maintenance equipment, and concretely relates to a suspension type tension detection device for monitoring electrified railway contact net, which comprises a tension meter body, a wire sleeve and a handle assembly, the wire sleeve is fixed on two sets of fixed pulleys on the top of the tension meter body and a measuring movable pulley between the two sets of fixed pulleys, and the wire sleeve is of an annular structure. The assembly composed of the tension meter body, the wire sleeve and the handle assembly provides a tension detection device with good convenience for use for the monitoring personnel of electrified railway contact net line laying construction, improves the height of both sides of the tension meter body detection wheel through the wire sleeve, makes the contact net line clamped in the hanging operation process of the subsequent wheels not easy to slide off from the front wheels, reduces the failure rate during the clamping of the detection wheel, and the inclined chamfer structure of the wire sleeve can help the contact net line to better enter the middle part of the wheel during the clamping.

Description

Technical Field

[0001] This utility model relates to the technical field of construction and maintenance equipment for electrified railways, specifically to a suspended tension detection device for monitoring the overhead contact system of electrified railways. Background Technology

[0002] The overhead contact line is a crucial component of electrified railways. During its construction and installation, the tension of the contact line wire needs to be monitored to ensure its stability in later use. Currently, tension detection is generally achieved using a tension meter, such as the Schmidt DX2-5000 tension meter. This type of tension meter typically includes two sets of fixed pulleys and a set of movable pulleys mounted on top of a sliding push-pull plate with spring tension, forming a V-groove clamp measuring head. Its working principle involves clamping the contact line wire between the fixed and movable pulleys and applying a lateral force using the mechanical tension of the springs, causing a small fixed displacement or fixed bending angle. The contact line wire then generates a restoring force (i.e., a component of the tension) to resist this deformation. This bending causes pressure on the built-in force sensor (such as a strain gauge sensor). Based on an internally established calibration relationship between the "required applied force" and the "actual tension of the wire," the tension meter directly measures this force and calculates the tension value.

[0003] However, existing tension meters have the following problems during use: 1. Their three sets of pulleys (two sets of fixed pulleys and one set of movable pulleys) need to hook the contact wire simultaneously. The contact wire itself relies on tension for suspension, which has a certain degree of instability and elasticity. When the pulleys come into contact with the contact wire, the contact wire is prone to deformation. It is very easy for one pulley to hook the other pulley, which is mainly due to the insufficient limiting height of the pulleys on both sides of the wire, which cannot effectively restrain the lateral movement of the wire during the hooking process; 2. When the tension meter's pulleys are hooked onto the contact wire, it is usually necessary to support the equipment body with one hand and operate the elastic sliding plate of the movable pulley with the other hand. The overall controllability of the equipment gripping operation is poor, and there is a lack of a grip structure that can provide stable gripping operation for personnel. This not only increases the difficulty of operation but also affects the measurement efficiency. Therefore, a suspended tension detection device for monitoring the contact wire of electrified railway is proposed. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a suspended tension detection device for monitoring the overhead contact system of electrified railways.

[0005] The technical solution adopted by this utility model to solve its technical problem is a suspended tension detection device for monitoring the contact network of electrified railways, including a tension meter body, a wire sleeve and a handle assembly. The wire sleeve is fixed on two sets of fixed pulleys on the top of the tension meter body and a measuring movable pulley between the two sets of fixed pulleys. The wire sleeve has a ring structure and is respectively sleeved on the outer periphery of the wheel body on both sides of the fixed pulley and the measuring movable pulley. The surface of the wire sleeve facing the wheel body is set as an inclined chamfered structure to facilitate the sliding of the wire. The wire sleeve is fixed to the outer periphery of the corresponding fixed pulley and the measuring movable pulley by gluing or welding.

[0006] By adopting the above technical solution, a tension testing device with good ease of use is provided for the personnel monitoring the installation of overhead contact lines in electrified railways through a component consisting of a tension meter body, a conductor sleeve, and a handle assembly. The conductor sleeve increases the height of both sides of the tension meter body's testing wheel, making it less likely for the contact wire to slip off the front wheel during subsequent wheel attachment operations, thus reducing the error rate during the attachment and clamping of the testing wheel. Furthermore, the inclined chamfered structure of the conductor sleeve helps the contact wire to better enter the middle of the wheel during attachment.

[0007] Specifically, the grip assembly includes a front grip group and a rear grip group. The front grip group is disposed on the sliding plate of the tension meter body for elastically pushing and pulling the movable pulley for measuring the force, and the rear grip group is disposed on the back of the base of the tension meter body.

[0008] Specifically, the front grip assembly and the rear grip assembly have the same structure, both including a damping shaft and a grip. The end of the grip is rotatably connected to the sliding plate of the elastic force push-pull measuring pulley and the back of the tension meter body through the damping shaft.

[0009] By setting up a front grip group and a rear grip group, it is easier for personnel to grip and control the tension meter body during wheel engagement, thereby improving controllability during measurement operations, replacing the existing lever design, and increasing the gripping area for the hand.

[0010] Specifically, both sides of the front grip assembly and the rear grip assembly are provided with threaded positioning structures to limit the usage position of the front grip assembly and the rear grip assembly after rotation.

[0011] Specifically, the threaded positioning structure includes a Phillips head knob and a screw. The Phillips head knob is fixed to one end of the screw, and the end of the screw away from the Phillips head knob is threadedly connected to the back of the base of the sliding plate for measuring the elastic push-pull movable pulley or the tension meter body. The back of the base of the sliding plate for measuring the elastic push-pull movable pulley and the tension meter body are both provided with corresponding threaded positioning holes along the damping shaft at the corresponding positions, and the threaded positioning structure is provided with at least one set.

[0012] By adopting the above technical solution, the damping shaft can be easily adjusted to a grip angle that is close to the user's gripping habits. After adjustment, the threaded positioning hole can be threaded through the threaded positioning structure to limit the grip angle.

[0013] The beneficial effects of this utility model are:

[0014] The suspended tension detection device for monitoring the overhead contact line of electrified railways described in this utility model significantly improves the lateral limiting capability of the contact line by adding inclined chamfered wire sleeves to both sides of the pulley, effectively preventing the slippage of the line during the hanging and measurement process, and improving the measurement success rate and work efficiency.

[0015] The suspended tension detection device for monitoring the overhead contact system of electrified railways described in this utility model provides operators with an ergonomic grip by setting a symmetrical, adjustable and lockable handle assembly, which greatly improves the controllability, stability and convenience of equipment operation, and reduces the difficulty of operation and labor intensity.

[0016] The suspended tension detection device for monitoring the overhead contact line of electrified railways described in this utility model has a simple structure, low improvement cost, is easy to implement on the basis of existing tension meters, is highly practical, and has good promotional value. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0019] Figure 2 This is a schematic diagram of the grip of this utility model;

[0020] Figure 3 This is a front view of the wire sleeve of this utility model;

[0021] Figure 4 This is a schematic diagram of the threaded positioning structure of this utility model;

[0022] Figure 5 A schematic diagram of an existing tension meter;

[0023] In the diagram: 1. Tensioner body; 11. Fixed pulley; 12. Measuring movable pulley; 2. Wire sleeve; 21. Inclined chamfered structure; 3. Front grip assembly; 4. Rear grip assembly; 6. Damping shaft; 7. Grip; 8. Threaded positioning structure; 81. Plum blossom knob; 82. Screw. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-5 As shown, the suspended tension detection device for monitoring the overhead contact line of an electrified railway, as described in this utility model, includes a tension meter body 1, a conductor sleeve 2, and a handle assembly.

[0026] The tension meter body 1 is a prior art structure. Its top is equipped with two sets of fixed pulleys 11 and a sliding measuring pulley 12 driven by a spring mechanism. The wire sleeve 2 is made of metal or high-strength engineering plastic and has a ring structure. A wire sleeve 2 is fixedly installed on the outer periphery of both sides of each fixed pulley 11 and measuring pulley 12. The wire sleeve 2 can be fixed to the pulley by high-strength adhesive or direct welding. The side of the wire sleeve 2 near the center of the groove has an inclined chamfer structure 21. This chamfer makes it easy for the contact wire to slide into the center of the groove when it is attached.

[0027] The grip assembly includes a front grip group 3 and a rear grip group 4. The front grip group 3 is mounted on the front end of the sliding plate of the driving measuring pulley 12 via its damping shaft 6. The rear grip group 4 is mounted on the back of the base of the tension meter body 1 via its damping shaft 6. The front grip group 3 and the rear grip group 4 have the same structure, each including a damping shaft 6 and a grip 7. The grip 7 can rotate around the damping shaft 6 within a certain angle range to adapt to the gripping habits of different operators. A threaded positioning hole is provided on the component near the damping shaft 6 (sliding plate or back of the base). The threaded positioning structure 8 includes a swivel knob 81 with anti-slip texture and a screw 82 connected to it. When the grip 7 is rotated to a suitable angle, the operator can rotate the swivel knob 81 to screw the screw 82 into the corresponding threaded positioning hole, thereby tightening and fixing the grip 7 to prevent it from rotating under force.

[0028] In use, the operator holds the handles 7 of the front handle group 3 and the rear handle group 4 with both hands respectively. The angle of the handles 7 can be adjusted and locked as needed. The pulley group of the tension meter body 1 is aligned with the contact wire. With the guidance of the wire sleeve 2, the contact wire is sequentially inserted into the grooves of the fixed pulley 11 and the measuring movable pulley 12. Since the wire sleeve 2 increases the height of the side wall, the wire is not easy to come out from the side. After it is securely attached, the operator can apply or release the force on the sliding plate by holding the front handle group 3 to make the measuring movable pulley 12 move. The tension meter body 1 can then perform tension measurement according to the original principle.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A suspended tension detection device for monitoring the overhead contact system of electrified railways, characterized in that, The device includes a tension meter body (1), a wire sleeve (2), and a handle assembly. The wire sleeve (2) is fixed to two sets of fixed pulleys (11) on the top of the tension meter body (1) and a measuring movable pulley (12) between the two sets of fixed pulleys (11). The wire sleeve (2) has a ring structure and is respectively fitted onto the outer periphery of the wheel body on both sides of the fixed pulley (11) and the measuring movable pulley (12). The side surface of the wire sleeve (2) facing the wheel body is set with an inclined chamfered structure (21) to facilitate the sliding of the wire. The wire sleeve (2) is fixed to the outer periphery of the corresponding fixed pulley (11) and the measuring movable pulley (12) by gluing or welding.

2. The suspended tension detection device for monitoring the overhead contact line of an electrified railway according to claim 1, characterized in that, The grip assembly includes a front grip assembly (3) and a rear grip assembly (4).

3. A suspended tension detection device for monitoring the overhead contact system of an electrified railway according to claim 2, characterized in that, A set of front grips (3) is disposed on the sliding plate of the elastic push-pull measuring pulley (12) in the tension meter body (1), and a set of rear grips (4) is disposed on the back of the base of the tension meter body (1).

4. A suspended tension detection device for monitoring the overhead contact system of an electrified railway according to claim 2, characterized in that, The front grip assembly (3) and the rear grip assembly (4) have the same structure, both including a damping pivot (6) and a grip (7).

5. A suspended tension detection device for monitoring the overhead contact line of an electrified railway according to claim 4, characterized in that, The end of the grip (7) is rotatably connected to the sliding plate of the elastic push-pull measuring pulley (12) and the back of the base of the tension meter body (1) via a damping pivot (6).

6. A suspended tension detection device for monitoring the overhead contact line of an electrified railway according to claim 4, characterized in that, Both sides of the front grip assembly (3) and the rear grip assembly (4) are provided with threaded positioning structures (8) to limit the usage position of the front grip assembly (3) and the rear grip assembly (4) after rotation.

7. A suspended tension detection device for monitoring the overhead contact line of an electrified railway according to claim 6, characterized in that, The threaded positioning structure (8) includes a plum blossom knob (81) and a screw (82).

8. A suspended tension detection device for monitoring the overhead contact system of an electrified railway according to claim 7, characterized in that, The plum blossom knob (81) is fixed to one end of the screw (82), and the end of the screw (82) away from the plum blossom knob (81) is threadedly connected to the back of the base of the sliding plate of the elastic push-pull measuring pulley (12) or the tension meter body (1).

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