Overhead Contact Line Guide Pulley Device

Abstract

This utility model relates to the technical field of guide pulleys and discloses a catenary guide pulley device, including a connecting block, a rotating shaft, a pin, and a pulley assembly. The connecting block has a rotating shaft and a pin inserted into it, with the axis of the rotating shaft and the axis of the pin spaced apart. The pulley assembly is rotatably connected to the rotating shaft, and the rotating shaft is rotatably connected to the connecting block, allowing the pulley assembly to rotate relative to the connecting block via the rotating shaft. The pin is connected to the connecting block and is used to fix the connecting block. By using a staggered rotating shaft and pin, the rotating shaft can be made of a single piece, eliminating the need to fix the pulley assembly in sections. This results in higher strength for the rotating shaft, solving the technical problem of catenary collapse caused by the breakage of the elastic cylindrical pin in the pulley in the prior art. This achieves a more stable pulley assembly and prevents catenary collapse.

Description

Technical Field

[0001] This utility model relates to the field of guide pulley technology, and in particular to a catenary guide pulley device. Background Technology

[0002] Currently, the overhead contact system is one of the core pieces of equipment in electrified railways that are most directly related to the operating speed and transportation safety of high-speed trains. Guide pulleys are key auxiliary components of the overhead contact system, and their core function is to ensure the rational arrangement of the overhead contact line and the stable operation of the system. They guide the overhead contact line to change its direction through the grooves, adapt to the path design, and avoid interference with other components; assist the operation of the compensation device, ensuring the smooth raising and lowering of the weights to maintain stable tension of the overhead contact line; replace sliding friction with rolling friction, reduce wear on the overhead contact line, and extend its service life; they also help fix the spatial posture of the overhead contact line, ensuring that the geometric parameters of the overhead contact system meet the standards and that the overhead contact line makes stable contact. They are an important component for maintaining the safe and efficient operation of the system.

[0003] In the prior art, guide pulleys are generally fixed to two short pins by two elastic cylindrical pins, and the pulley and the fixed block are fixedly connected by a connecting plate.

[0004] However, due to the harsh environment and complex working conditions at railway sites, and the fact that pulleys need to drive connecting plates under continuous force, the elastic cylindrical pins in the existing connection methods are relatively thin, with limited structural strength and fatigue resistance, resulting in poor reliability. In actual service, there is a phenomenon of elastic cylindrical pin breakage, which causes the left / right short pins to fall off, leading to the pulley falling off and posing a risk of contact wire collapse. Utility Model Content

[0005] The purpose of this invention is to provide a contact wire guide pulley device to solve the technical problem of contact wire collapse caused by the breakage of the elastic cylindrical pin in the pulley in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model provides a contact wire guide pulley device, including a connecting block, a rotating shaft, a pin shaft, and a pulley assembly; The connecting block is provided with the rotating shaft and the pin, and the axis of the rotating shaft and the axis of the pin are spaced apart. The pulley assembly is rotatably connected to the rotating shaft, and the rotating shaft is rotatably connected to the connecting block, so that the pulley assembly can rotate relative to the connecting block via the rotating shaft; The pin is connected to the connecting block, and the pin is used to fix the connecting block.

[0007] In an optional implementation, a mounting bracket is also included; The pin passes through the mounting bracket, and the connecting block is connected to the mounting bracket via the pin.

[0008] In an optional embodiment, a connecting ear is further included, which is connected to the mounting bracket. A pin passes through the connecting ear and sequentially passes through the mounting bracket, the connecting block, and the connecting ear. The connecting block abuts against the inner wall of the mounting bracket, thereby fixing the connecting block.

[0009] In an optional embodiment, a first cotter pin is provided on the side of the connecting ear away from the connecting block, and the first cotter pin is inserted into and connected to the pin shaft.

[0010] In an optional embodiment, the mounting bracket includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are connected and arranged perpendicularly to each other, the connecting ear is fixedly connected to the second mounting plate, the connecting ear is arranged parallel to the first mounting plate, and the connecting block is provided between the first mounting plate and the connecting ear.

[0011] In an optional embodiment, the second mounting plate is provided with a through hole, and the second mounting plate is fixedly mounted through the through hole and bolts.

[0012] In an optional embodiment, the axis of the rotating shaft and the axis of the pin are arranged perpendicular to each other on the projection of the shaft onto the mounting bracket.

[0013] In an optional embodiment, a fixing cap is provided at one end of the rotating shaft and a nut is provided at the other end. The nut is threadedly connected to the rotating shaft, and the fixing cap and the nut are respectively provided on both sides of the pulley assembly.

[0014] In an optional embodiment, a second cotter pin is provided on the side of the nut away from the connecting block, and the second cotter pin is inserted into and connected to the rotating shaft.

[0015] In an optional embodiment, the pulley assembly includes a wheel body, a connecting arm, and a rotating shaft. One side of the connecting arm is sleeved on the rotating shaft, and the other side of the connecting arm is rotatably connected to the wheel body through the rotating shaft. The axes of the rotating shaft and the rotating shaft are arranged parallel to each other.

[0016] This utility model provides a contact wire guide pulley device, including a connecting block, a rotating shaft, a pin, and a pulley assembly. The connecting block has the rotating shaft and pin inserted into it, with the axes of the rotating shaft and pin spaced apart. The pulley assembly is rotatably connected to the rotating shaft, which is rotatably connected to the connecting block, allowing the pulley assembly to rotate relative to the connecting block via the rotating shaft. The pin is connected to the connecting block and is used to fix the connecting block. By using a staggered rotating shaft and pin, the rotating shaft can be made of a single piece, eliminating the need for segmented fixing of the pulley assembly. This results in higher strength for the rotating shaft, solving the technical problem of contact wire collapse caused by the breakage of the elastic cylindrical pin in the pulley in existing technologies. This achieves a more stable pulley assembly and prevents contact wire collapse. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overhead contact line guide pulley device mentioned in the embodiments of this utility model; Figure 2 This is a side view of the contact wire guide pulley device mentioned in the embodiments of this utility model; Figure 3 This is a front view of the contact wire guide pulley device mentioned in the embodiments of this utility model.

[0018] In the figure, 1-connecting block; 2-rotating shaft; 3-pin shaft; 4-pulley assembly; 401-wheel body; 402-connecting arm; 403-rotating shaft; 5-mounting bracket; 501-first mounting plate; 502-second mounting plate; 6-connecting ear. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In related technologies, due to the harsh environment and complex working conditions at railway sites, and the fact that pulleys need to drive connecting plates to bear continuous force, the elastic cylindrical pins in existing connection methods are relatively thin, with limited structural strength and fatigue resistance, resulting in poor reliability. In actual service, there is a phenomenon of elastic cylindrical pin breakage, which leads to the detachment of left / right short pins, which in turn leads to the detachment of pulleys, posing a risk of contact wire collapse.

[0022] In view of this, such as Figures 1-3 As described above, some embodiments of this utility model provide a contact wire guide pulley device, including a connecting block 1, a rotating shaft 2, a pin 3, and a pulley assembly 4; the connecting block 1 is provided with the rotating shaft 2 and the pin 3, with the axis of the rotating shaft 2 and the axis of the pin 3 spaced apart; the pulley assembly 4 is rotatably connected to the rotating shaft 2, and the rotating shaft 2 is rotatably connected to the connecting block 1, so that the pulley assembly 4 can rotate relative to the connecting block 1 through the rotating shaft 2; the pin 3 is connected to the connecting block 1 and is used to fix the connecting block 1.

[0023] In the above embodiments, the connecting block 1 can be made of metal, and the connecting block 1 can be rectangular. The connecting block 1 can be fixed to a wall or to a metal bracket installed on the wall. The connecting block 1 is provided with a cylindrical hole, and the rotating shaft 2 and the pin 3 are respectively inserted into one hole, so that the rotating shaft 2 and the pin 3 can rotate relative to the connecting block 1 respectively. The axes of the rotating shaft 2 and the pin 3 are spaced apart, thereby avoiding the situation where the rotating shaft 2 cannot completely penetrate the connecting block 1 after the pin 3 is installed, thus adopting a segmented fixing method, which effectively improves the connection strength between the pulley assembly 4 and the connecting block 1. The pin 3 can be used to fix the connecting block 1, and the pin 3 can fix the connecting block 1 to the bracket on the wall.

[0024] This utility model provides a contact wire guide pulley device, including a connecting block 1, a rotating shaft 2, a pin 3, and a pulley assembly 4. The connecting block 1 has the rotating shaft 2 and the pin 3 inserted into it, with the axis of the rotating shaft 2 and the axis of the pin 3 spaced apart. The pulley assembly 4 is rotatably connected to the rotating shaft 2, and the rotating shaft 2 is rotatably connected to the connecting block 1, allowing the pulley assembly 4 to rotate relative to the connecting block 1 via the rotating shaft 2. The pin 3 is connected to the connecting block 1 and is used to fix the connecting block 1. By using the staggered rotating shaft 2 and pin 3, the rotating shaft 2 can be made as a single piece, eliminating the need to fix the pulley assembly 4 in sections. This results in higher strength for the rotating shaft 2, solving the technical problem of contact wire collapse caused by the breakage of the elastic cylindrical pin in the pulley in the prior art, and achieving a more stable pulley assembly 4, thus preventing contact wire collapse.

[0025] In an optional embodiment, a mounting bracket 5 is also included; a pin 3 passes through the mounting bracket 5, and the connecting block 1 is connected to the mounting bracket 5 via the pin 3.

[0026] In the above embodiment, the mounting bracket 5 can be made of metal and can be fixed to the wall. The pin 3 passes through the mounting bracket 5 and the connecting block 1 respectively, so that the connecting block 1 can be fixed.

[0027] In an optional embodiment, a connecting ear 6 is also included. The connecting ear 6 is connected to the mounting bracket 5. A pin 3 is inserted through the connecting ear 6. The pin 3 passes through the mounting bracket 5, the connecting block 1 and the connecting ear 6 in sequence. The connecting block 1 abuts against the inner wall of the mounting bracket 5, so that the connecting block 1 is fixed.

[0028] In the above embodiment, the connecting ear 6 can be made of metal and can be welded to the mounting bracket 5. The connecting ear 6 can also be provided with a through hole. The pin 3 passes through the holes on the mounting bracket 5, the connecting block 1 and the connecting ear 6 in sequence, thereby making the pin 3 more secure and the connecting block 1 more secure. Since the connecting block 1 is set as a cuboid, when the pin 3 passes through the holes on the mounting bracket 5, the connecting block 1 and the connecting ear 6 in sequence, the outer wall of the connecting block 1 abuts against the inner wall of the mounting bracket 5. At this time, the connecting block 1 cannot rotate relative to the pin 3, so that the connecting block 1 is fixed.

[0029] In an optional embodiment, a first cotter pin is provided on the side of the connecting ear 6 away from the connecting block 1, and the first cotter pin is inserted into the pin 3 and connected.

[0030] In the above embodiment, a first cotter pin is provided on the side of the connecting ear 6 away from the connecting block 1, and a hole can be provided on the pin 3. The first cotter pin passes through the hole on the pin 3 and connects, so that the pin 3 can be fixed and the connecting block 1 is prevented from moving due to the sliding of the pin 3.

[0031] In an optional embodiment, the mounting bracket 5 includes a first mounting plate 501 and a second mounting plate 502, the first mounting plate 501 and the second mounting plate 502 are connected, the first mounting plate 501 and the second mounting plate 502 are arranged perpendicular to each other, the connecting ear 6 is fixedly connected to the second mounting plate 502, the connecting ear 6 is arranged parallel to the first mounting plate 501, and a connecting block 1 is provided between the first mounting plate 501 and the connecting ear 6.

[0032] In the above embodiments, the first mounting plate 501 and the second mounting plate 502 can be integrally formed or welded. The edges of the first mounting plate 501 and the second mounting plate 502 are connected to each other. The two ends of the first mounting plate 501 and the second mounting plate 502 are flush. Both the first mounting plate 501 and the second mounting plate 502 are rectangular. The first mounting plate 501 and the second mounting plate 502 are vertically arranged. The connecting ear 6 is welded to the second mounting plate 502, so that the connecting ear 6 is parallel to the first mounting plate 501. Thus, the connecting ear 6, the first mounting plate 501 and the second mounting plate 502 form a space with an opening. The connecting block 1 is located in this space, so that the connecting block 1 can be better fixed.

[0033] In an optional embodiment, the second mounting plate 502 is provided with through holes, and the second mounting plate 502 is fixedly mounted by means of through holes and bolts.

[0034] In the above embodiment, the second mounting plate 502 is provided with a circular or elliptical through hole, and the bracket on the wall can have a threaded hole. The second mounting plate 502 can be connected to the threaded hole on the wall bracket by means of bolts passing through the through hole, so that the second mounting plate 502 can be fixed.

[0035] In an optional embodiment, the projections of the axis of the rotating shaft 2 and the axis of the pin 3 onto the mounting bracket 5 are perpendicular to each other.

[0036] In the above embodiments, such as Figure 3 As shown, the axis of the rotating shaft 2 can be set in the horizontal direction, while the axis of the pin 3 can be set in the vertical direction, so that the projections of the axis of the rotating shaft 2 and the axis of the pin 3 on the second mounting plate 502 are perpendicular, thereby meeting the usage requirements and better limiting the rotation direction of the pulley assembly 4.

[0037] In an optional embodiment, a fixing cap is provided at one end of the rotating shaft 2 and a nut is provided at the other end. The nut is threadedly connected to the rotating shaft 2, and the fixing cap and the nut are respectively provided on both sides of the pulley assembly 4.

[0038] In the above embodiments, the fixing cap can be hemispherical, and the fixing cap can be integrally formed with the rotating shaft 2, or it can be welded to the end face of the rotating shaft 2. The rotating shaft 2 can be provided with a threaded section, and the nut is connected to the rotating shaft 2 through the threaded section. Thus, the movement of the rotating shaft 2 can be limited by the fixing cap and the nut to prevent the rotating shaft 2 from falling off.

[0039] In an optional embodiment, a second cotter pin is provided on the side of the nut away from the connecting block 1, and the second cotter pin is inserted into and connected to the rotating shaft 2.

[0040] In the above embodiment, a hole is provided on the rotating shaft 2, and the second cotter pin is inserted into the hole on the rotating shaft 2, so that the second cotter pin is connected to the rotating shaft 2, thereby preventing the nut from separating from the rotating shaft 2 and effectively preventing the rotating shaft 2 from falling off.

[0041] In an optional embodiment, the pulley assembly 4 includes a wheel body 401, a connecting arm 402 and a rotating shaft 403. One side of the connecting arm 402 is sleeved on the rotating shaft 2, and the other side of the connecting arm 402 is rotatably connected to the wheel body 401 through the rotating shaft 403. The axes of the rotating shaft 2 and the rotating shaft 403 are arranged parallel to each other.

[0042] In the above embodiment, the wheel body 401 can be a circular wheel, the connecting arm 402 can be made of metal, and there can be two connecting arms 402. The two connecting arms 402 are parallel to each other and are respectively arranged on both sides of the wheel body 401. The two connecting arms 402 are also arranged on both sides of the connecting block 1. A cylindrical metal rotating shaft 403 is connected to one side of the two connecting arms 402. The rotating shaft 403 can be provided with threads. The rotating shaft 403 is locked to the connecting arm 402 by a nut. The wheel body 401 is provided with grooves and is used to connect with the thread. A bearing can be provided between the rotating shaft 403 and the wheel body 401 to make the rotation of the wheel body 401 smoother.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A contact wire guide pulley device, characterized in that, Includes connecting blocks, rotating shafts, pins, and pulley assemblies; The connecting block is provided with the rotating shaft and the pin, and the axis of the rotating shaft and the axis of the pin are spaced apart. The pulley assembly is rotatably connected to the rotating shaft, and the rotating shaft is rotatably connected to the connecting block, so that the pulley assembly can rotate relative to the connecting block via the rotating shaft; The pin is connected to the connecting block, and the pin is used to fix the connecting block.

2. The contact wire guide pulley device according to claim 1, characterized in that, It also includes mounting brackets; The pin passes through the mounting bracket, and the connecting block is connected to the mounting bracket via the pin.

3. The contact wire guide pulley device according to claim 2, characterized in that, It also includes a connecting ear, which is connected to the mounting bracket. The pin passes through the connecting ear and is arranged to pass through the mounting bracket, the connecting block and the connecting ear in sequence. The connecting block abuts against the inner wall of the mounting bracket to fix the connecting block.

4. The contact wire guide pulley device according to claim 3, characterized in that, A first cotter pin is provided on the side of the connecting ear away from the connecting block, and the first cotter pin is inserted into the pin shaft and connected.

5. The contact wire guide pulley device according to claim 3, characterized in that, The mounting bracket includes a first mounting plate and a second mounting plate, which are connected and perpendicular to each other. The connecting ear is fixedly connected to the second mounting plate and is parallel to the first mounting plate. A connecting block is provided between the first mounting plate and the connecting ear.

6. The contact wire guide pulley device according to claim 5, characterized in that, The second mounting plate is provided with through holes, and the second mounting plate is fixedly installed through the through holes and bolts.

7. The contact wire guide pulley device according to claim 5, characterized in that, The axis of the rotating shaft and the axis of the pin are perpendicular to each other on the projection of the pin onto the mounting bracket.

8. The contact wire guide pulley device according to claim 1, characterized in that, A fixing cap is provided at one end of the rotating shaft, and a nut is provided at the other end. The nut is threadedly connected to the rotating shaft. The fixing cap and the nut are respectively provided on both sides of the pulley assembly.

9. The contact wire guide pulley device according to claim 8, characterized in that, The nut is provided with a second cotter pin on the side opposite to the connecting block, and the second cotter pin is inserted into and connected to the rotating shaft.

10. The contact wire guide pulley device according to any one of claims 1-9, characterized in that, The pulley assembly includes a wheel body, a connecting arm, and a rotating shaft. One side of the connecting arm is sleeved on the rotating shaft, and the other side of the connecting arm is rotatably connected to the wheel body through the rotating shaft. The axes of the rotating shaft and the rotating shaft are arranged parallel to each other.

Images