A guide wheel guard and bogie

Abstract

The guide wheel protection cover and protection frame disclosed by the application relate to the field of rail transit technology and comprise a movable protection cover and a fixing part. The movable protection cover is arranged on the side of a frame far from the ground through a supporting seat and can rotate, and the opening direction of the movable protection cover is towards the rim of the guide wheel close to one end of the power rail. The fixing part is arranged on the frame. When the movable protection cover rotates to a first limit position, the movable protection cover is opened, the rim of the guide wheel is exposed, and the guide wheel can be maintained by an operator. When the movable protection cover rotates to a second limit position, the movable protection cover is closed and located above the guide wheel, the rim of the guide wheel close to one end of the power rail is shielded by the movable protection cover, the protection of the rim of the guide wheel is realized, and when the movable protection cover rotates to the second limit position, the movable protection cover is connected with the fixing part. The movable protection cover is prepared from an insulating material, and the rim of the guide wheel can be prevented from being affected by the power rail to cause electric corrosion.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and more specifically, to a guide wheel guard and a bogie. Background Technology

[0002] In the field of rubber-tired subways, there is a type of bogie with guide wheel devices on both sides to guide the vehicle. This bogie receives current through a lateral third rail and returns it through the bottom rail (electric rail). Since an electric arc is generated between the electric rail and the guide wheel, it can cause electro-erosion of components such as the rim and bearings of the guide wheel device. Therefore, corresponding protective devices are needed to prevent the electric arc from entering the rim of the guide wheel device.

[0003] Therefore, how to provide electrical insulation protection for the rims and bearings of the guide wheel has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a guide wheel protective cover to provide electrical insulation protection for the rim, bearings and other components of the guide wheel.

[0005] Another object of the present invention is to provide a bogie including the above-described guide wheel guard.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A guide wheel guard, comprising:

[0008] A movable protective cover is rotatably mounted on the side of the frame away from the ground via a support base, and the opening of the movable protective cover is oriented toward the end of the guide wheel near the power rail. The movable protective cover is made of insulating material.

[0009] Fasteners, used for mounting on the frame;

[0010] Specifically, when the movable protective cover rotates to the first limit position, the rim of the guide wheel is exposed; when the movable protective cover rotates to the second limit position, the movable protective cover protects the rim of the guide wheel near the end of the power receiving rail, and the movable protective cover is connected to the fixing member.

[0011] Optionally, in the above-mentioned guide wheel protective cover, the movable protective cover is provided with a fixed shaft, and the fixing member is provided with a snap-fit ​​groove for engaging with the fixed shaft.

[0012] Optionally, in the above-mentioned guide wheel protective cover, two mounting supports are provided on the inner wall of the movable protective cover. The mounting supports are provided with mounting holes. The fixed shaft passes through the mounting holes and is fixed at both ends by the first limiting member. The fixed shaft is located in the middle of the two mounting supports and is used to engage with the snap-fit ​​groove.

[0013] Optionally, in the above-mentioned guide wheel guard, the fixing member includes:

[0014] Fixed supports are used for connection to the frame;

[0015] The spring plates are two located on the side of the fixed support facing the movable protective cover and extend in the direction of the movable protective cover, with the snap-fit ​​groove formed between the two spring plates.

[0016] Optionally, in the above-mentioned guide wheel guard, the spring plate is tilted away from the frame.

[0017] Optionally, in the above-mentioned guide wheel protective cover, the support base is used to be disposed on the frame and has a first hinge hole, the movable protective cover has a second hinge hole, the rotating shaft passes through the first hinge hole and the second hinge hole, and both ends are fixed by a second limiting member.

[0018] Optionally, in the above-mentioned guide wheel protective cover, a circumferentially variable diameter ring is provided on the rotating shaft, and the variable diameter ring rotates synchronously with the rotating shaft and the movable protective cover. An elastic element is provided on the support base for abutting against the circumferential outer wall of the variable diameter ring.

[0019] Optionally, in the above-mentioned guide wheel protective cover, the variable diameter ring includes a first variable diameter portion and a second variable diameter portion connected end to end in the circumferential direction, and the radial length of the first variable diameter portion is greater than the radial length of the second variable diameter portion;

[0020] Specifically, when the movable protective cover rotates to the first limit position, the outer wall of the second variable diameter part abuts against the elastic element; when the movable protective cover moves from the first limit position to the second limit position, the outer wall of the first variable diameter part abuts against the elastic element.

[0021] Optionally, the guide wheel protective cover described above also includes a fixed protective cover, which is installed on the frame and located at the end of the guide wheel away from the power rail, so as to protect the hub of the guide wheel at the end away from the power rail.

[0022] A bogie including the aforementioned guide wheel guard.

[0023] The guide wheel protective cover provided by this invention includes a movable protective cover and a fixing member. The movable protective cover is rotatably mounted on the side of the frame away from the ground via a support base, with its opening facing the rim of the guide wheel near the energized rail. The fixing member is mounted on the frame. When the movable protective cover rotates to its first extreme position, it opens, exposing the rim of the guide wheel for maintenance by personnel. When it rotates to its second extreme position, it closes and sits above the guide wheel, shielding the rim of the guide wheel near the energized rail. When the movable protective cover rotates to its second extreme position, it connects to the fixing member, fixing it in place and preventing free rotation during vehicle operation. The movable protective cover is made of insulating material to prevent electrolytic corrosion of the guide wheel rim due to the energized rail.

[0024] Compared with the prior art, the guide wheel protective cover provided by the present invention has a simple and reliable structure and is easy to maintain. The movable protective cover can effectively prevent electrolytic corrosion of the guide wheel rim and bearings, and achieve electrical insulation protection for the guide wheel rim and bearings. At the same time, it can also prevent foreign objects from intruding and causing damage to the guide wheel rim, and prevent corrosion from rainwater, etc. The rotatable connection of the movable protective cover does not affect the daily maintenance of the guide wheel.

[0025] The bogie provided by the present invention includes the above-mentioned guide wheel protective cover, and therefore has the same structure and beneficial effects as described above, which will not be repeated here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram showing the installation positions of the guide wheel protective cover, the power receiving rail, and the frame as disclosed in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the movable protective cover at the first extreme position according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the movable protective cover at the second extreme position disclosed in an embodiment of the present invention;

[0030] Figure 4 for Figure 3 Top view;

[0031] Figure 5 for Figure 4 Schematic diagram of the cross section at point AA;

[0032] Figure 6 This is a schematic diagram of the structure of the guide wheel protective cover disclosed in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the installation structure of the movable protective cover disclosed in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the fastener disclosed in an embodiment of the present invention;

[0035] Figure 9 This is a top view of the fixed protective cover disclosed in an embodiment of the present invention;

[0036] Figure 10 This is a bottom view of the fixed protective cover disclosed in an embodiment of the present invention;

[0037] Figure 11 This is a front view of the variable diameter ring disclosed in an embodiment of the present invention;

[0038] Figure 12 This is an isometric view of the variable diameter ring disclosed in an embodiment of the present invention;

[0039] Figure 13 This is a side view of the variable diameter ring disclosed in an embodiment of the present invention.

[0040] Among them, 100 is the movable protective cover, 101 is the first reinforcing rib, 110 is the mounting support, and 120 is the fixed shaft;

[0041] 200 is the support base, 210 is the rotating shaft, 220 is the variable diameter ring, 221 is the first variable diameter part, 222 is the second variable diameter part, and 230 is the elastic element;

[0042] 300 is a fastener, 310 is a fixed support, and 320 is a spring plate;

[0043] 400 is the fixed protective cover, and 401 is the second reinforcing rib;

[0044] 500 is the frame, and 510 is the guide wheel;

[0045] 600 is the power receiving rail. Detailed Implementation

[0046] The core of this invention is to disclose a guide wheel protective cover to provide electrical insulation protection for the rim, bearings, etc. of the guide wheel.

[0047] Another object of the present invention is to provide a bogie including the above-described guide wheel guard.

[0048] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the invention as described in the claims. It should be noted that, for ease of description, only the parts relevant to the relevant application are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0049] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0050] Combination Figure 1 and Figure 6 The guide wheel protective cover disclosed in this embodiment of the invention includes a movable protective cover 100 and a fixing member 300. The movable protective cover 100 is rotatably disposed on the side of the frame 500 away from the ground via a support base 200, and the opening of the movable protective cover 100 faces the rim of the guide wheel 510 near the end of the power receiving rail 600. The fixing member 300 is disposed on the frame 500.

[0051] like Figure 2 As shown, when the movable protective cover 100 rotates to its first limit position, the movable protective cover 100 opens, exposing the rim of the guide wheel 510, allowing operators to maintain the guide wheel 510. Figure 3 As shown, when the movable protective cover 100 rotates to the second limit position, the movable protective cover 100 closes and is located above the guide wheel 510. The rim of the guide wheel 510 near the energized rail 600 is shielded by the movable protective cover 100, thus protecting the rim of the guide wheel 510. When the movable protective cover 100 rotates to the second limit position, the movable protective cover 100 is connected to the fixing member 300, thus fixing the movable protective cover 100 at the second limit position. This prevents the movable protective cover 100 from rotating freely during vehicle operation. The movable protective cover 100 is made of insulating material, which can prevent the rim of the guide wheel 510 from being electro-eroded by the energized rail 600.

[0052] Compared with the prior art, the guide wheel protective cover disclosed in this embodiment of the invention has a simple and reliable structure and is easy to maintain. The movable protective cover 100 can effectively prevent electrolytic corrosion of the guide wheel rim and bearings, and achieve electrical insulation protection for the guide wheel rim and bearings. At the same time, it can also prevent foreign objects from intruding and causing damage to the guide wheel rim and avoid corrosion from rainwater, etc., and the rotatable connection of the movable protective cover 100 does not affect the daily maintenance of the guide wheel 510.

[0053] For ease of description, the position closer to the ground is referred to as "bottom" and the position farther from the ground is referred to as "top".

[0054] Those skilled in the art will understand that, in combination Figure 1 The power receiving rail 600 (which is also the guide rail) is located on the side of the guide wheel 510 away from the frame 500. The position of the power receiving rail 600 and the guide wheel device that is prone to electric arcing is located above the guide wheel 510, which makes the rim and bearing above the guide wheel 510 prone to electrolytic corrosion. However, the rim and bearing below the guide wheel 510 are far away and generally do not experience electrolytic corrosion. Therefore, only the position above the guide wheel 510 needs to be electrically insulated.

[0055] When rotated to the second extreme position, the movable protective cover 100 shields the top of the guide wheel 510 rim, achieving isolation and protection against the electric arc from the energized rail 600. Since the tire of the guide wheel 510 is made of rubber, the movable protective cover 100 only needs to extend to the outer side of the guide wheel 510 rim, without requiring electrolytic corrosion protection for the tire area. Figure 7 As shown, the movable protective cover 100 has a semi-circular cover-like structure.

[0056] In a specific embodiment of the present invention, in order to fix the movable protective cover 100 at the second extreme position, a fixed shaft 120 is provided on the movable protective cover 100, and the fixing member 300 is provided with a snap-fit ​​groove for snapping with the fixed shaft 120.

[0057] Specifically, such as Figure 7 As shown, two mounting supports 110 are symmetrically arranged on the inner wall of the movable protective cover 100 facing the rim of the guide wheel 510. The mounting supports 110 are far away from the hinge position of the movable protective cover 100. Mounting holes are provided on the mounting supports 110. The fixed shaft 120 passes through the mounting holes and is limited and fixed to the mounting supports 110 at both ends by the first limiting member. The fixed shaft 120 is exposed at the middle part of the two mounting supports 110 for engaging with the snap-fit ​​groove.

[0058] The first limiting member can be a pin, with limiting holes at both ends of the fixed shaft 120. The limiting holes are located at the ends of the fixed shaft 120 exposed on the mounting support 110. After the pin passes through the limiting holes, the fixed shaft 120 and the mounting support 110 can be limited and fixed. Alternatively, a limiting block can be set at one end of the fixed shaft 120 as the first limiting member, and a limiting hole can be opened at the other end of the fixed shaft 120 for pin-based limiting. The fixed shaft 120 can also be a screw, with nuts at both ends serving as the first limiting members for limiting connection with the mounting support 110.

[0059] Correspondingly, such as Figure 8 As shown, the fixing member 300 includes a fixing support 310 and spring plates 320. The fixing support 310 is used to fix the frame 500 via a connector. There are two spring plates 320 disposed on the side of the fixing support 310 facing the movable protective cover 100, and the spring plates 320 extend in the direction of the movable protective cover 100. A snap-fit ​​groove is formed between the two spring plates 320 to engage with the fixing shaft 120.

[0060] like Figure 1 As shown, the fixed support 310 is disposed on the end face of the frame 500, the support base 200 is disposed on the upper surface of the end of the frame 500, and the movable protective cover 100 rotates in the direction of the power receiving rail, and rotates to the second limit position to be engaged and fixed with the fixing member 300.

[0061] The spring plate 320 is snapped into the fixed shaft 120, which makes it easy to open and close the movable protective cover 100 and the fixed part 300 and ensures reliable fixation. The fixed part 300 is set on the frame 500 and will not affect the normal rotation of the guide wheel 510.

[0062] Furthermore, such as Figure 8 As shown, the spring plate 320 is tilted away from the frame 500, so that in addition to closing and locking the movable protective cover 100, the spring plate 320 also supports the movable protective cover 100 and reduces the vibration of the movable protective cover 100.

[0063] The fixed support 310 includes a body and a connecting part. The connecting part is fixed to the frame 500 by bolts. The body is connected to the connecting part and extends away from the frame 500. A spring plate 320 is disposed on the body. Figure 8 The two spring plates 320 can be an integral structure and are pressed onto the body by a fixing plate. The end of the body away from the connecting part is a bevel structure. The spring plate 320 is fixed on the bevel structure and tilted away from the frame 500.

[0064] Furthermore, reinforcing ribs are provided between the main body and the connecting parts to improve the structural strength.

[0065] Those skilled in the art will understand that the movable protective cover 100 and the fixing member 300 can also be fixed by means of bolt connection, so that the movable protective cover 100 can be opened by removing the bolts to achieve maintenance of the guide wheel 510.

[0066] Combination Figure 7 The support base 200 is used to be installed on the frame 500 and has a first hinge hole. The movable protective cover 100 has a second hinge hole. The rotating shaft 210 passes through the first hinge hole and the second hinge hole, and its end is limited by the second limiting member to realize the hinge connection between the support base 200 and the movable protective cover 100.

[0067] The specific limiting method of the rotating shaft 210 is similar to that of the fixed shaft 120, and will not be described in detail here.

[0068] In order to slow down the rotation of the movable protective cover 100, a circumferentially variable diameter ring 220 is provided on the rotating shaft 210. The variable diameter ring 220 rotates synchronously with the rotating shaft 210, and the rotating shaft 210 rotates synchronously with the movable protective cover 100, so that the variable diameter ring 220 rotates synchronously with the movable protective cover 100. An elastic element 230 is provided on the support base 200 for abutting against the circumferential outer wall of the variable diameter ring 220.

[0069] The elastic element 230 can be a spring sheet. According to Hooke's Law, when a spring undergoes elastic deformation, the spring force is directly proportional to the amount of deformation. During the free descent of the movable protective cover 100 from the first extreme position to the second extreme position, the diameter of the variable diameter ring 220 gradually increases, causing the deformation of the spring sheet 320 on the rotating shaft 210 to gradually increase. This increases the frictional force of the rotating shaft 210, thereby gradually increasing the closing resistance experienced by the movable protective cover 100 during its descent, thus achieving a deceleration and vibration reduction effect.

[0070] Specifically, the reducing ring 220 is installed at the middle position of the rotating shaft 210, and its circumferential outer wall abuts against the spring sheet provided on the support base 200. The structure is simple and easy to install.

[0071] In a specific embodiment disclosed in this invention, such as Figure 11 As shown, the variable diameter ring 220 includes a first variable diameter portion 221 and a second variable diameter portion 222 connected end to end in the circumferential direction. The radial length of the first variable diameter portion 221 is greater than the radial length of the second variable diameter portion 222. When the movable protective cover 100 rotates to the first limit position, the outer wall of the second variable diameter portion 222 abuts against the elastic member 230. During the process of the movable protective cover 100 moving from the first limit position to the second limit position, the outer wall of the first variable diameter portion 221 abuts against the elastic member 230.

[0072] Combination Figures 11-13The first variable diameter section 221 and the second variable diameter section 222 are transitioned by a curved surface structure.

[0073] The variable diameter ring 220 can reduce the closing speed of the movable protective cover 100 and also reduce the vibration of the movable protective cover 100 to a certain extent. By pressing the movable protective cover 100, the operator can achieve the closing and locking of the movable protective cover 100 and the fixed part 300, thereby protecting the rim and bearing of the guide wheel 510 from electrical insulation and mechanical damage. The operation is simple.

[0074] Meanwhile, the variable diameter ring 220 slows down the closing speed of the movable protective cover 100, which makes it easier for operators to observe the assembly of the guide wheel 510 during maintenance and prevents operators from being pinched and injured.

[0075] The reducing ring 220 and the rotating shaft 210 can be fixed by key connection or by interference fit.

[0076] like Figure 7 As shown, the movable protective cover 100 is used to be installed at the end of the frame 500, and a clearance groove is provided on the support base 200 to avoid the connection between the guide wheel 510 and the frame 500.

[0077] The movable protective cover 100 is designed in a semi-circular shape. A first reinforcing rib 101 is provided near the second hinge hole of the movable protective cover 100 to enhance the structural strength of the hinge position of the movable protective cover 100.

[0078] During installation, first install the reducing ring 220 on the rotating shaft 210, then assemble the rotating shaft 210, the movable protective cover 100, and the support base 200. Then, install the support base 200 on the guide arm of the bogie using fasteners. Install the fixing part 300 on the mounting bases at both ends of the frame 500 using bolts. Rotate the movable protective cover 100 to the second limit position so that the fixed shaft 120 is locked with the spring plate 320 on the fixing part 300, thus completing the installation of the guide wheel protective cover.

[0079] During maintenance, simply forcefully lift the movable protective cover 100, and the fixed shaft 120 will disengage from the spring plate 320 slot on the fixing component 300.

[0080] Since the movable protective cover 100 only protects the rim of the guide wheel 510 away from the frame 500, in order to protect the side of the guide wheel 510 closer to the frame 500, the guide wheel protective cover disclosed in this invention also includes a fixed protective cover 400, combined with... Figure 4 and Figure 5The fixed protective cover 400 is used to be installed on the frame 500 and located above the end of the guide wheel 510 away from the power receiving rail 600 (close to the frame 500) to protect the rim of the guide wheel 510 from damage by foreign objects and corrosion by rainwater.

[0081] Among them, such as Figure 9 and Figure 10 As shown, the fixed protective cover 400 can be made of insulating and waterproof material, and a second reinforcing rib 401 is provided on the fixed protective cover 400 to improve the structural strength.

[0082] The fixed protective cover 400 and the frame 500 can be bolted together. The fixed protective cover 400 can be designed as a semi-circular plate structure with a diameter slightly larger than the outer diameter of the rim of the guide wheel 510.

[0083] The bogie disclosed in this embodiment of the invention includes the above-mentioned guide wheel protective cover, and therefore has the same structure and beneficial effects as described above, which will not be repeated here.

[0084] The terms "first" and "second," etc., used in the specification and claims of this invention are used to distinguish different objects, not to describe a specific order, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed. Additionally, in the description of embodiments in this application, "a plurality of" means two or more.

[0085] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guide wheel protective cover, characterized in that, include: A movable protective cover (100) is rotatably mounted on the side of the frame (500) away from the ground via a support base (200), and the opening of the movable protective cover (100) is directed toward the end of the guide wheel (510) near the power rail (600), and the movable protective cover (100) is made of insulating material. A fastener (300) is used to mount on the frame (500); When the movable protective cover (100) rotates to the first limit position, the rim of the guide wheel (510) is exposed. When the movable protective cover (100) rotates to the second limit position, the movable protective cover (100) protects the rim of the guide wheel (510) near the end of the power receiving rail (600) above the rim. The movable protective cover (100) is connected to the fixing member (300). The movable protective cover (100) is provided with a fixed shaft (120), and the fastener (300) is provided with a snap-fit ​​groove for engaging with the fixed shaft (120); The fastener (300) includes: A fixed support (310) is used to connect to the frame (500); The spring pieces (320) are two of them located on the side of the fixed support (310) facing the movable protective cover (100) and extending in the direction of the movable protective cover (100). The snap-fit ​​groove is formed between the two spring pieces (320). The support base (200) is used to be installed on the frame (500) and has a first hinge hole. The movable protective cover (100) has a second hinge hole. The rotating shaft (210) passes through the first hinge hole and the second hinge hole, and both ends are fixed by the second limiting member. The rotating shaft (210) is provided with a circumferentially variable diameter ring (220), and the variable diameter ring (220) rotates synchronously through the rotating shaft (210) and the movable protective cover (100). The support base (200) is provided with an elastic element (230) for abutting against the circumferential outer wall of the variable diameter ring (220).

2. The guide wheel protective cover as described in claim 1, characterized in that, The inner wall of the movable protective cover (100) is provided with two mounting supports (110). The mounting supports (110) are provided with mounting holes. The fixed shaft (120) passes through the mounting holes and is fixed at both ends by the first limiting member. The fixed shaft (120) is located in the middle of the two mounting supports (110) for engaging with the snap-fit ​​groove.

3. The guide wheel protective cover as described in claim 1, characterized in that, The spring sheet (320) is tilted away from the frame (500).

4. The guide wheel protective cover as described in claim 1, characterized in that, The variable diameter ring (220) includes a first variable diameter section (221) and a second variable diameter section (222) connected end to end in the circumferential direction. The radial length of the first variable diameter section (221) is greater than the radial length of the second variable diameter section (222). When the movable protective cover (100) rotates to the first limit position, the outer wall of the second variable diameter part (222) abuts against the elastic member (230). When the movable protective cover (100) moves from the first limit position to the second limit position, the outer wall of the first variable diameter part (221) abuts against the elastic member (230).

5. The guide wheel protective cover as described in any one of claims 1 to 4, characterized in that, It also includes a fixed protective cover (400), which is installed on the frame (500) and located at the end of the guide wheel (510) away from the power rail (600) to protect the hub of the guide wheel (510) away from the power rail (600).

6. A bogie, characterized in that, Includes the guide wheel protective cover as described in any one of claims 1 to 5.

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