Line clamp for preventing eccentric wear of compensation pulley of catenary

Abstract

Provided is a catenary compensation pulley anti-abrasion correction clamp, belonging to the technical field of electrified railway catenary equipment. The clamp mainly comprises two fixed ring clamps, a set of correction gaskets, bolts and lock nuts. The fixed ring clamps are composed of two half clamps with half clamps, and are fixed on the double ring rod through the bolt. The correction gasket is provided with a gasket at one end and a sliding groove at the other end. The bolt passes through the sliding groove and is connected with the bolt hole on the fixed ring clamp, and is locked by the lock nut. The sliding groove structure can flexibly adjust the installation position of the correction gasket. The gasket at the front end is tightly pressed against the inner side of the pulley fixing plate, so that a reverse correction force is applied to the abraded pulley, effectively correcting the pulley abrasion and restoring the coaxial operation of the pulley and the compensation rope. The device has the advantages of simple structure, convenient installation, reliable fixation, can significantly improve the operation stability of the equipment and prolong the service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of overhead contact line equipment for electrified railways, specifically relating to a clamp for preventing uneven wear of the overhead contact line compensation pulley. Background Technology

[0002] In electrified railway catenary systems, the compensation device is a key component ensuring constant catenary tension. As the core component of the compensation device, the operating condition of the compensation pulley directly affects the safety and stability of the catenary. Due to factors such as installation deviations, terrain undulations, and wind forces, compensation pulleys often experience uneven wear, leading to wear on the pulley groove edges, loosening or breakage of the compensation rope, and even detachment from the groove, severely impacting power supply reliability and train operation safety.

[0003] In existing technologies, correction is often achieved by adding iron shims or adjusting the installation angle, but the following problems exist: the shim material is not standardized and is prone to rust and deformation; the installation method is not fixed and is prone to loosening and falling off; the adjustment range is limited and cannot adapt to different wear angles; the maintenance frequency is high and the work efficiency is low.

[0004] Therefore, there is an urgent need for a special rectification device that is structurally sound, easy to install, reliably fixed, and can effectively prevent uneven wear of the compensating pulley. Utility Model Content

[0005] The technical problem solved by this utility model is: The purpose of this utility model is to provide a line clamp that is simple in structure, easy to install, reliable in fixing, and can effectively prevent uneven wear of the compensation pulley.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Contact line compensation pulley anti-wear clamps, including: A fixed ring clamp, which consists of two half clamps, each half clamp having a half retaining ring in the middle, and connecting plates on both sides of the half retaining ring, with bolt holes on the connecting plates; A set of corrective pads, including a positive corrective pad and a negative corrective pad, wherein the upper end of the corrective pad is provided with a pad strip and the lower end is provided with a sliding groove; Bolts and lock nuts are used to connect the straightening washer to the fixing ring clamp; The fixed ring clamp is snapped onto the double ring rod by the half-clamping ring, and the straightening shim is connected to the bolt hole of the fixed ring clamp through the sliding groove and the bolt, and abuts against the inner side of the pulley fixing plate through the shim strip.

[0007] Further specifying the above solution, the corrective pad is made of stainless steel, with a thickness of 3-5mm and a length of 155mm.

[0008] Further defining the above solution, the pad strip is 75mm long, which is used to enhance the contact area and force uniformity between the pad and the pulley fixing plate.

[0009] Further defining the above solution, the sliding groove has a length of 45mm and a width of 13mm, and is used to adjust the installation position of the corrective pad on the fixing ring clamp.

[0010] Further defining the above solution, the two halves of the fixing ring clamp are connected by bolts and anti-loosening nuts to form a closed ring structure.

[0011] As a further limitation of the above solution, the outer side of the anti-loosening nut is coated with anti-loosening adhesive to prevent loosening during use.

[0012] Further defining the above solution, the corrective pad can be installed in a position and thickness that can be selected according to the direction of pulley wear, so as to achieve bidirectional correction.

[0013] Advantages of this utility model compared to the prior art: 1. This solution has a simple structure, is easy to process, and has low cost: it uses standardized components, making it easy to mass-produce and install on-site; 2. This solution is flexible in installation and highly adaptable: the sliding groove structure allows for fine-tuning of the front and rear positions, accommodating different wear angles and installation errors; 3. This solution is reliable and has a long service life: it adopts double protection with anti-loosening nuts and anti-loosening adhesive to ensure that it will not loosen during long-term use; 4. The corrective effect of this solution is significant: through the design of corrective shims in both directions, it effectively corrects the uneven wear of the pulley, restores the coaxial operation of the fixed pulley and the compensating rope, extends the service life of the equipment, and improves the operational stability of the equipment; 5. This solution has low maintenance frequency and high safety: once installed, it can be used for a long time, reducing the number of maintenance operations and improving power supply safety and traffic order. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the corrective pad structure of this utility model; Figure 3 This is a schematic diagram of the fixed ring clamp structure of this utility model; Figure 4 This is a schematic diagram of the utility model in use. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] Please see Figure 1-4 The embodiments of this utility model are described in detail below.

[0018] like Figure 1-4 As shown, a contact wire clamp for preventing uneven wear of a contact wire compensating pulley includes a straightening shim 1, a fixing ring clamp 2, a bolt 3, and a locking nut 6. The straightening shim 1 has two parts: a positive straightening shim and a negative straightening shim. The upper end of the straightening shim 1 has a shim strip 1-2 for fitting against the pulley fixing plate 5, enhancing the shim's support and force uniformity. To ensure the straightening shim 1 can fit against the pulley fixing plate 5 and adjust the pulley's uneven wear angle, the shim strip 1-2 can be adjusted according to actual conditions. The lower end of the straightening shim 1 has a sliding groove 1-1 for installing and adjusting the shim, ensuring the straightening shim is correctly installed to the uneven wear point. The fixing ring clamp 2 consists of two half-clamps, each half-clamp having a half-ring 2-2 in the middle. Connecting plates 2-3 are located on both sides of the half-ring 2-2, and bolt holes 2-1 are provided on the connecting plates.

[0019] Preferably, the straightening shim 1 is made of stainless steel, with a thickness of 3-5mm and a length preferably of 155mm. The shim strip 1-2 is 75mm long and is used to enhance the contact area and force uniformity between the shim and the pulley fixing plate 5. The sliding groove 1-1 is 45mm long and 13mm wide and is used to adjust the installation position of the straightening shim 1 on the fixing ring clamp 2.

[0020] In actual installation, first check the wear condition and direction of the compensating pulley, and select a suitable corrective shim (positive or negative corrective shim). Secure the fixing ring clamp 2 to the double ring rod 4 using two half-rings 2-2. Use bolts 3 to pass through the sliding groove 1-1 and bolt hole 2-1 to install the corrective shim 1 onto the fixing ring clamp 2, and tighten the anti-loosening nut 6. The anti-loosening nut 6 is coated with anti-loosening adhesive to prevent loosening due to vibration during use.

[0021] The connecting plates 2-3 on both sides of the assembled fixing ring clamp 2 are located on different sides of the two straightening shims 1. The position of the straightening shim 1 is adjusted by the sliding groove 1-1 so that its shim strip 1-2 is in close contact with the inner side of the pulley fixing plate 5. By selecting the appropriate thickness and installation position of the straightening shim, precise correction of the deviation can be achieved.

[0022] Working principle: This invention uses a fixed ring clamp to fix the corrective pads to a double-ring rod. The corrective pads are adjusted in position via a sliding groove structure, ensuring they are tightly fitted to the inner side of the pulley fixing plate. When the pulley experiences uneven wear, the two corrective pads provide lateral support to the pulley fixing plate in opposite directions, changing the direction of force on the pulley and restoring it to coaxial operation with the compensating rope. The sliding groove structure allows the pads to move within a certain range, adapting to different deflection angles, thus achieving a precise and adjustable effect in correcting uneven wear.

[0023] In a field test conducted on an electrified railway section, after the installation of this utility model, the previously severely compromised operating condition of the compensating pulley was significantly improved, the phenomenon of the compensating rope derailing disappeared, the operational stability of the equipment was significantly enhanced, and the maintenance cycle was extended to more than three times the original length.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A contact wire compensation pulley anti-wear clamp, characterized in that: include: The fixed ring clamp (2) is composed of two half clamps. Each half clamp has a half retaining ring (2-2) in the middle. The half retaining ring (2-2) has connecting plates (2-3) on both sides. The connecting plates (2-3) have bolt holes (2-1). A set of corrective pads (1) includes a positive corrective pad and a negative corrective pad. The upper end of the corrective pad (1) is provided with a pad strip (1-2) and the lower end is provided with a sliding groove (1-1). Bolts (3) and lock nuts (6) are used to connect the straightening shim (1) to the fixing ring clamp (2); The fixed ring clamp (2) is clamped onto the double ring rod (4) by the half-clamp (2-2), and the straightening pad (1) is connected to the bolt hole (2-1) of the fixed ring clamp (2) through the sliding groove (1-1) and the bolt (3), and abuts against the inner side of the pulley fixing plate (5) through the pad strip (1-2).

2. The contact wire compensation pulley anti-wear clamp according to claim 1, characterized in that: The corrective pad (1) is made of stainless steel, with a thickness of 3-5mm and a length of 155mm.

3. The contact wire compensation pulley anti-wear clamp according to claim 1, characterized in that: The pad strip (1-2) is 75mm long and is used to enhance the contact area and force uniformity between the pad and the pulley fixing plate (5).

4. The contact wire compensation pulley anti-wear clamp according to claim 1, characterized in that: The sliding groove (1-1) is 45mm long and 13mm wide, and is used to adjust the installation position of the corrective pad (1) on the fixed ring clamp (2).

5. The contact wire compensation pulley anti-wear clamp according to claim 1, characterized in that: The two halves of the fixed ring clamp (2) are connected by bolts (3) and anti-loosening nuts (6) to form a closed ring structure.

6. The contact wire compensation pulley anti-wear clamp according to claim 1, characterized in that: The outer side of the anti-loosening nut (6) is coated with anti-loosening glue to prevent it from loosening during use.

7. The contact wire compensation pulley anti-wear clamp according to claim 1, characterized in that: The corrective pad (1) can be installed in a position and thickness according to the direction of pulley wear, so as to achieve bidirectional correction.

Images