Tie rods for rail vehicle bogies, bogies and rail vehicles

Abstract

This invention provides a tie rod for a railway vehicle bogie, a bogie, and a railway vehicle, belonging to the technical field of railway vehicles. The tie rod includes a tie rod body and clamps connected to both ends of the tie rod body. The clamps are used to connect the bogie. The tie rod body includes a first connecting part, a rod body part, an adjusting part, and a second connecting part that are interconnected. The first connecting part and the second connecting part are respectively used to connect the clamps at both ends of the tie rod body. The adjusting part is used to adjust the distance between the rod body part and the second connecting part. The bogie includes the aforementioned tie rod, and the railway vehicle includes the aforementioned bogie. The tie rod, bogie, and railway vehicle provided by this invention have the ability to adjust the length of the tie rod, enabling the bogie brake shoe clearance to have a corresponding adjustment function, ensuring uniform distribution of braking force, allowing for flexible operation along straight lines and smooth passage through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving the smoothness and safety of vehicle operation.

Description

Technical Field

[0001] This invention belongs to the field of rail vehicle technology, and more specifically, relates to a tie rod for a rail vehicle bogie, a bogie, and a rail vehicle. Background Technology

[0002] The running gear of subway track maintenance vehicles supports the car body and its cargo at two points. It bears and transmits various loads and forces from the car body to the wheels, or from the wheel-rail to the car body, ensuring even distribution of braking force, safe vehicle operation, flexible movement along straight lines and smooth passage through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving vehicle smoothness and safety. The running gear mainly includes wheel set axle box assembly, spring suspension system, frame components, basic braking system, and grounding system. In existing technology, the tie rod on the bogie of rail vehicles is a simple, rod-shaped component. Because it lacks length adjustment capability, the brake shoe clearance on the bogie cannot be effectively adjusted. Summary of the Invention

[0003] The purpose of this invention is to provide a tie rod for a railway vehicle bogie, a bogie, and a railway vehicle, in order to solve the technical problem that the tie rod of an existing railway vehicle bogie does not have a length adjustment function.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a tie rod for a railway vehicle bogie is provided, comprising a tie rod body and clamps connected to both ends of the tie rod body. The clamps are used to connect the bogie. The tie rod body comprises, from one end to the other, a first connecting part, a rod body part, an adjusting part, and a second connecting part that are connected to each other. The first connecting part and the second connecting part are respectively used to connect the clamps at both ends of the tie rod body. The adjusting part is used to adjust the distance between the rod body part and the second connecting part, thereby adjusting the length of the tie rod body and the spacing between the two sets of clamps.

[0005] In another embodiment of this application, the rod body is provided with an internal threaded hole at one end near the adjustment part, and a screw is coaxially provided at one end of the adjustment part near the rod body, and the other end is used to connect to the second connecting part. The screw is used to be inserted into the internal threaded hole and screwed in, and a nut is screwed on the screw. Tightening the nut is used to abut against and lock the rod body.

[0006] In another embodiment of this application, the clamping plate includes an upper clamping plate, a lower clamping plate, and a welded portion disposed between the upper clamping plate and the lower clamping plate. The welded portion is used to fix the upper clamping plate and the lower clamping plate together. The welded portion, the upper clamping plate, and the lower clamping plate together form a closed space. The two ends of the pull rod body are respectively inserted and fixed in the closed space. The upper clamping plate and the lower clamping plate both have axially collinear mounting holes.

[0007] In another embodiment of this application, the rod body includes a left rod, an adjusting cylinder, and a right rod connected in sequence from one end to the other. The outer circumferential wall of the right end of the left rod and the outer circumferential wall of the left end of the right rod are respectively provided with external threads with opposite directions of rotation. The adjusting cylinder is open at both ends and has internal threads with opposite directions of rotation. The right end of the left rod and the left end of the right rod are screwed to both ends of the adjusting cylinder. Tightening the adjusting cylinder is used to adjust the distance between the left rod and the right rod.

[0008] In another embodiment of this application, a sun gear is coaxially mounted on the outer circumference of the adjusting cylinder. Multiple planetary gears are meshed and driven on the outer circumference of the sun gear. An external gear is meshed and driven on the outer circumference formed by the multiple planetary gears. The external gear rotates circumferentially within the space surrounding the multiple planetary gears. The multiple planetary gears are rotatably connected to a planetary carrier. A connecting rod is connected to the side of the planetary carrier. The connecting rod is used to connect to the bogie, the left rod, or the right rod. A driver is provided on the connecting rod. The power output end of the driver is meshed and driven on the external gear and used to drive the external gear to rotate. In turn, the external gear drives the multiple planetary gears to rotate simultaneously, and the planetary gears drive the sun gear to rotate.

[0009] In another embodiment of this application, the external gear includes a disc-shaped gear carrier, internal teeth disposed on the inner circumferential wall of the gear carrier, and external teeth disposed on the outer circumferential wall. The internal teeth are used to mesh and drive with a plurality of planetary gears. The power output end of the driver is provided with a drive gear, and the drive gear meshes and drives with the external teeth.

[0010] In another embodiment of this application, the left rod and / or the right rod includes two outer rods, two middle rods and an inner rod. The two ends of the inner rod are respectively inserted into one end of the two middle rods, and the other ends of the two middle rods are respectively inserted into one end of the two outer rods. The other end of one outer rod is used to connect to the first connecting part or the second connecting part, and the other end of the other outer rod is used to screw the adjusting cylinder.

[0011] In another embodiment of this application, a machine vision inspection component for detecting the appearance quality of the pull rod body is connected to the planetary carrier. The detection direction and the height of the machine vision inspection component on the planetary carrier are both adjustable.

[0012] The beneficial effects of the tie rod for rail vehicle bogies provided by this invention are as follows: Compared with the prior art, the tie rod for rail vehicle bogies of this invention includes a tie rod body and clamps connected to both ends of the tie rod body. The clamps are used to connect the bogie. The tie rod body includes, from one end to the other, a first connecting part, a rod body part, an adjusting part, and a second connecting part that are connected to each other. The first connecting part and the second connecting part are respectively used to connect the clamps at both ends of the tie rod body. The adjusting part is used to adjust the distance between the rod body part and the second connecting part, thereby adjusting the length of the tie rod body and the distance between the two sets of clamps. This solves the technical problem that the tie rod of the rail vehicle bogie does not have a length adjustment function. It has the ability to adjust the length of the tie rod, so that the brake shoe clearance of the bogie has a corresponding adjustment function, so that the braking force is evenly distributed, ensuring the safe operation of the vehicle, enabling flexible operation along straight lines and smooth passage through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving the stability and safety of vehicle operation.

[0013] The present invention also provides a bogie that is equipped with the aforementioned tie rod for a railway vehicle bogie.

[0014] The beneficial effects of the bogie provided by the present invention are as follows: Compared with the prior art, the bogie of the present invention has the function of length adjustment of the brake shoe clearance, which can adjust the length of the tie rod, so that the brake shoe clearance of the bogie has the corresponding adjustment function, so that the braking force is evenly distributed, ensuring the safe operation of the vehicle, enabling it to run flexibly along straight lines and smoothly pass through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving the stability and safety of vehicle operation.

[0015] The present invention also provides a rail vehicle equipped with the bogies described above.

[0016] The beneficial effects of the rail vehicle provided by the present invention are as follows: Compared with the prior art, the bogie of the rail vehicle of the present invention has the function of length adjustment of the brake shoe clearance, which can adjust the length of the tie rod, so that the brake shoe clearance of the bogie has the corresponding adjustment function, so that the braking force is evenly distributed, ensuring the safe operation of the vehicle, enabling it to run flexibly along straight lines and smoothly pass through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving the stability and safety of vehicle operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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.

[0018] Figure 1 This is a schematic diagram of the main structure of the tie rod for a rail vehicle bogie provided in an embodiment of the present invention;

[0019] Figure 2 A side view of the tie rod for a rail vehicle bogie provided in an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0021] Figure 4 This is a front view structural schematic diagram of a tie rod for a rail vehicle bogie provided in another embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the left or right rod structure of a tie rod for a bogie of a rail vehicle provided in another embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the tie rod structure for a bogie of a rail vehicle provided in another embodiment of the present invention.

[0024] In the diagram: 100, tie rod body; 110, first connecting part; 120, rod body; 121, internal threaded hole; 122, left rod; 1221, outer rod; 1222, middle rod; 1223, inner rod; 123, adjusting cylinder; 124, right rod; 125, sun gear; 126, planetary gear; 127, external gear; 1271, gear carrier; 1272, internal gear; 1273, external gear; 128, planetary carrier; 1281, rotating shaft; 129, connecting rod; 130, adjusting part; 131, screw; 132, nut; 140, second connecting part; 200, clamping plate; 210, upper clamping plate; 220, lower clamping plate; 230, welding part; 240, mounting hole; 300, driver; 310, drive gear; 400, machine vision inspection component; 410, slide rail. Detailed Implementation

[0025] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] Please refer to the following: Figures 1 to 6The present invention will now describe the tie rod for a railway vehicle bogie. The tie rod for a railway vehicle bogie includes a tie rod body 100 and clamping plates 200 connected to both ends of the tie rod body 100. The clamping plates 200 are used to connect the bogie. The tie rod body 100, from one end to the other, sequentially includes a first connecting portion 110, a rod portion 120, an adjusting portion 130, and a second connecting portion 140 connected to each other. The first connecting portion 110 and the second connecting portion 140 are respectively used to connect the clamping plates 200 at both ends of the tie rod body 100. The adjusting portion 130 is used to adjust the distance between the rod portion 120 and the second connecting portion 140, thereby adjusting the length of the tie rod body 100 and the distance between the two sets of clamping plates 200.

[0027] The tie rod for a railway vehicle bogie provided by the present invention, compared with the prior art, includes a tie rod body 100 and clamping plates 200 connected to both ends of the tie rod body 100. The clamping plates 200 are used to connect the bogie. The tie rod body 100 includes, from one end to the other, a first connecting part 110, a rod body 120, an adjusting part 130, and a second connecting part 140 connected to each other. The first connecting part 110 and the second connecting part 140 are respectively used to connect the clamping plates 200 at both ends of the tie rod body 100. The adjusting part 130... The first connecting part 110 is used to adjust the distance between the rod body 120 and the second connecting part 140, thereby adjusting the length of the tie rod body 100 and the distance between the two sets of clamping plates 200. This solves the technical problem that the tie rod of the rail vehicle bogie does not have a length adjustment function. It has the ability to adjust the length of the tie rod, so that the brake shoe clearance of the bogie has a corresponding adjustment function, so that the braking force is evenly distributed, ensuring the safe operation of the vehicle, enabling it to run flexibly along straight lines and smoothly pass through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving the smoothness and safety of vehicle operation. Both the first connecting part 110 and the second connecting part 140 are rod-shaped and their outer diameter is smaller than that of the rod body 120.

[0028] The first connecting part 110, the rod part 120, the adjusting part 130, and the second connecting part 140 are connected to each other to form a rod-shaped component. Two sets of clamps 200 are fixedly connected to both ends. Except for the adjusting part 130, all other components are non-adjustable.

[0029] In this embodiment, the tie rod of the present invention is installed on the bogie, which can perform length adjustment, thereby giving the bogie a degree of freedom to adjust in a certain direction, thus enabling the bogie to possess the aforementioned advantages. The clamps 200 at both ends of the tie rod body 100 serve to connect the bogie to the tie rod body 100. By adjusting the length of the adjusting part 130, the length of the tie rod body can be adjusted, thus enabling the bogie to have an adjustment function, and thereby enabling tunnel vehicles (especially subways) to achieve the corresponding functions.

[0030] To achieve a detachable connection between the rod body 120 and the adjusting part 130, as a specific embodiment of the tie rod for a railway vehicle bogie provided by the present invention, please refer to... Figures 1 to 3 The rod body 120 has an internally threaded hole 121 at one end near the adjusting part 130. A screw 131 is coaxially mounted on one end of the adjusting part 130 near the rod body 120, and the other end is used to connect to the second connecting part 140. The screw 131 is inserted into the internally threaded hole 121 and screwed in. A nut 132 is screwed onto the screw 131. Tightening the nut 132 helps to abut and lock the rod body 120. The screw 131 and the internally threaded hole 121 are threaded together for easy installation and disassembly. The length of this tie rod is adjusted before connection or installation to the bogie, and then installed or connected.

[0031] As a specific embodiment of the tie rod for the bogie of a rail vehicle provided by the present invention, please refer to Figures 1 to 3 The clamping plate 200 includes an upper clamping plate 210, a lower clamping plate 220, and a welding portion 230 disposed between the upper clamping plate 210 and the lower clamping plate 220. The welding portion 230 is used to fix the upper clamping plate 210 and the lower clamping plate 220. The welding portion 230, the upper clamping plate 210, and the lower clamping plate 220 together form a closed space. The two ends of the tie rod body 100 are respectively inserted and fixed in the closed space. The upper clamping plate 210 and the lower clamping plate 220 both have axially collinear mounting holes 240. The upper clamping plate 210 and the lower clamping plate 220 are spaced apart. The welding portion 230 is formed by combining two arc-shaped plates. The mounting holes 240 are a structure for connecting with the bogie. The connection between the tie rod body 100 and the clamping plate 200 can be fixed by welding or other forms of connection, as long as a fixed connection between the two can be achieved. The closed space is a cavity that allows the two ends of the tie rod body 100 to be inserted, and finally, the two can be fixed by welding.

[0032] Besides the fact that the adjusting part 130 can adjust the length of the tie rod body 100, as a specific embodiment of the tie rod for a railway vehicle bogie provided by the present invention, please refer to [link to specific embodiments]. Figures 1 to 4The rod body 120 includes a left rod 122, an adjusting cylinder 123, and a right rod 124 connected sequentially from one end to the other. The outer circumferential wall of the right end of the left rod 122 and the outer circumferential wall of the left end of the right rod 124 are respectively provided with external threads in opposite directions. The adjusting cylinder 123 is open at both ends and has internal threads in opposite directions. The right ends of the left rod 122 and the left ends of the right rod 124 are screwed to both ends of the adjusting cylinder 123. Tightening the adjusting cylinder 123 is used to adjust the distance between the left rod 122 and the right rod 124. The adjusting cylinder 123 generally rotates clockwise or counterclockwise. The length of the tie rod body 100 can also be adjusted through the rod body 120, allowing for adjustment within different length ranges and enabling the bogie to be adjusted over a wide range. By driving the adjusting cylinder 123 to rotate, the length of the rod body 120 can be adjusted, thereby adjusting the length of the tie rod body 100 and the total length of the tie rod. In this embodiment, the adjusting cylinder 123 can be connected to a tool to drive it to rotate. Alternatively, its rotation can be controlled automatically (e.g., by connecting a motor to the adjusting cylinder 123 and controlling its rotation, where the operation of the motor can be controlled).

[0033] To achieve automatic rotation of the adjusting cylinder 123, as a specific embodiment of the tie rod for a railway vehicle bogie provided by the present invention, please refer to... Figure 4 A sun gear 125 is coaxially mounted on the outer circumference of the adjusting cylinder 123. Multiple planetary gears 126 are meshed and driven on the outer circumference of the sun gear 125. An external gear 127 is meshed and driven upward on the outer circumference formed by the multiple planetary gears 126. The external gear 127 rotates circumferentially within the space surrounding the multiple planetary gears 126. The multiple planetary gears 126 are rotatably connected to the planet carrier 128. A connecting rod 129 is connected to the side of the planet carrier 128. The connecting rod 129 is used to connect the bogie or the left rod 122 or the right rod 124. A driver 300 is provided on the connecting rod 129. The power output end of the driver 300 is meshed and driven by the external gear 127 and is used to drive the external gear 127 to rotate. In turn, the external gear 127 drives the multiple planetary gears 126 to rotate simultaneously, and the planetary gears 126 drive the sun gear 125 to rotate. The external gear 127 is driven to rotate by the driver 300, which in turn rotates multiple planetary gears 126, further rotating the sun gear 125 and the adjusting cylinder 123, thus adjusting the length of the pull rod body 100. The sun gear 125, multiple planetary gears 126, and external gear 127 combine to form a planetary gear train. The rotational speed of the adjusting cylinder 123 can be adjusted by regulating the output speed of the driver 300. When the pull rod body 100 needs to be moved to a certain position, the driver 300 also moves to that position, meaning that the movement of the pull rod body 100 does not affect the driving rotation of the adjusting cylinder 123. There can be three or four planetary gears 126 arranged in a circular array.

[0034] Specifically, multiple rotating shafts 1281 are rotatably connected to the planet carrier 128, and multiple planetary gears 126 are connected one-to-one to the multiple rotating shafts 1281. The planetary gears 126 only rotate on their own axes and do not revolve around the sun, while the external gear 127 is in a state of rotation. The cross-section of the external gear 127 is C-shaped or U-shaped, and teeth are provided on both the inner and outer circumferences, so that it can be driven to rotate.

[0035] As a specific embodiment of the tie rod for the bogie of a rail vehicle provided by the present invention, please refer to Figure 4 The external gear 127 includes a disc-shaped gear carrier 1271, internal teeth 1272 disposed on the inner circumferential wall of the gear carrier 1271, and external teeth 1273 disposed on the outer circumferential wall. The internal teeth 1272 are used for meshing and transmission connection with multiple planetary gears 126. The power output end of the driver 300 is provided with a drive gear 310, which meshes and transmits with the external teeth 1273. The gear carrier 1271 is in a rotating state. Through the meshing and transmission connection between the drive gear 310 of the driver 300 and the external gear 127, the external gear 127 can be driven to rotate. The position of the driver 300 is fixed. Only the drive gear 310, external gear 127, planetary gears 126, and sun gear 125 are rotating, thereby driving the adjusting cylinder 123 to rotate, and thus adjusting the total length of the rod body.

[0036] Specifically, the position of the driver 300 on the connecting rod 129 is adjustable, so that the drive gear 310 is always in a meshing state with the external gear 1273.

[0037] In addition to adjusting the length of the tie rod body 100 based on the adjusting cylinder 123 and the adjusting part 130, further coarse adjustment of the length of the tie rod body 100 is possible. As a specific embodiment of the tie rod for a railway vehicle bogie provided by the present invention, please refer to... Figure 5The left rod 122 and / or right rod 124 includes two outer rods 1221, two intermediate rods 1222, and an inner rod 1223. Both ends of the inner rod 1223 are respectively inserted into one end of the two intermediate rods 1222, and the other ends of the two intermediate rods 1222 are respectively inserted into one end of the two outer rods 1221. The other end of one outer rod 1221 is used to connect to the first connecting part 110 or the second connecting part 140, and the other end of the other outer rod 1221 is used to screw onto the adjusting cylinder 123. A limiting wire is threaded through the intermediate rod 1222, which can abut against the inner rod 1223 to achieve a fixed connection between the two. A limiting wire is also threaded through the outer rod 1221, which can abut against the intermediate rod 1222, thereby achieving a fixed connection between the outer rod 1221 and the intermediate rod 1222. After the length of the left rod 122 or right rod 124 is adjusted, the limiting wire can be engaged to fix the length. The limiting screw can be a set screw or a pin. Correspondingly, multiple through holes are provided on the inner rod 1223 and the intermediate rod 1222. The limiting screw can be inserted into the through holes at different positions to achieve the function of adjusting the length.

[0038] Based on the basic operational functions of the bogie, and in order to enable the bogie to have multiple functions, as a specific embodiment of the tie rod for a railway vehicle bogie provided by this invention, please refer to [the relevant documentation]. Figure 6 A machine vision inspection component 400 is connected to the connecting rod 129 for detecting the appearance quality of the pull rod body 100. The detection direction and height of the machine vision inspection component 400 on the connecting rod 129 are adjustable. The machine vision inspection component 400 uses existing components or products, including a CCD camera and a machine vision processor (located on the inner side of the connecting rod 129). The CCD camera can capture image information towards the pull rod body 100 and transmit the captured image information to detect or inspect the appearance quality of the pull rod body 100, replacing manual inspection and offering convenient operation. When the detection height cannot meet the requirements, the height or position of the machine vision inspection component 400 can be adjusted.

[0039] Specifically, a slide rail 410 is provided on the outer side of the connecting rod 129, and the machine vision inspection component 400 is slidably connected to the slide rail 410. The CCD camera is shooting towards the lower-angled rod body 100.

[0040] Specifically, the present invention also includes a mobile terminal (not shown in the figure), which is electrically connected to the machine vision inspection component 400 and is able to receive, analyze and judge the detected image information to determine whether the appearance quality of the pull rod body 100 meets or satisfies the requirements. An alarm is installed on the mobile terminal, and when the requirements are not met, the alarm will issue an alarm signal.

[0041] The present invention also provides a bogie equipped with the aforementioned tie rod for railway vehicle bogies. The bogie in this embodiment is based on a prior art bogie, with the addition of an adjustable tie rod, thereby enabling the bogie's brake shoe clearance to be adjusted accordingly.

[0042] The beneficial effects of the bogie provided by the present invention are as follows: Compared with the prior art, the bogie of the present invention has the function of length adjustment of the brake shoe clearance, which can adjust the length of the tie rod, so that the brake shoe clearance of the bogie has the corresponding adjustment function, so that the braking force is evenly distributed, ensuring the safe operation of the vehicle, enabling it to run flexibly along straight lines and smoothly pass through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving the stability and safety of vehicle operation.

[0043] The present invention also provides a rail vehicle equipped with the aforementioned bogie. The rail vehicle in this embodiment is based on existing rail vehicles, with the addition of an adjustable bogie, wherein the tie rod body 100 on the bogie has a length adjustment function.

[0044] The beneficial effects of the rail vehicle provided by the present invention are as follows: Compared with the prior art, the bogie of the rail vehicle of the present invention has the function of length adjustment of the brake shoe clearance, which can adjust the length of the tie rod, so that the brake shoe clearance of the bogie has the corresponding adjustment function, so that the braking force is evenly distributed, ensuring the safe operation of the vehicle, enabling it to run flexibly along straight lines and smoothly pass through curves, mitigating the interaction between the vehicle and the track, reducing vibration and impact, and improving the stability and safety of vehicle operation.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tie rod for a bogie of a rail vehicle, characterized in that, The device includes a tie rod body and clamps connected to both ends of the tie rod body. The clamps are used to connect the bogie. The tie rod body includes, from one end to the other, a first connecting part, a rod body, an adjusting part, and a second connecting part that are connected to each other. The first connecting part and the second connecting part are respectively used to connect the clamps at both ends of the tie rod body. The adjusting part is used to adjust the distance between the rod body and the second connecting part, thereby adjusting the length of the tie rod body and the distance between the two sets of clamps. The rod body includes a left rod, an adjusting cylinder, and a right rod connected in sequence from one end to the other. The outer circumferential wall of the right end of the left rod and the outer circumferential wall of the left end of the right rod are respectively provided with external threads in opposite directions. The adjusting cylinder is open at both ends and has internal threads in opposite directions. The right end of the left rod and the left end of the right rod are screwed to both ends of the adjusting cylinder. Tightening the adjusting cylinder is used to adjust the distance between the left rod and the right rod. The adjusting cylinder can rotate automatically. The rod body is provided with an internal threaded hole at one end near the adjustment part. The adjustment part is coaxially provided with a screw at one end near the rod body and the other end is used to connect to the second connection part. The screw is used to be inserted into the internal threaded hole and screwed in. A nut is screwed on the screw. Tightening the nut is used to abut against and lock the rod body. A sun gear is coaxially mounted on the outer circumference of the adjusting cylinder. Multiple planetary gears are meshed and connected to the outer circumference of the sun gear. An external gear is meshed and connected to the outer circumference formed by the multiple planetary gears. The external gear rotates circumferentially within the space surrounding the multiple planetary gears. The multiple planetary gears are rotatably connected to a planetary carrier. A connecting rod is connected to the side of the planetary carrier. The connecting rod is used to connect to the bogie, the left rod, or the right rod. A driver is provided on the connecting rod. The power output end of the driver is meshed and connected to the external gear and is used to drive the external gear to rotate. In turn, the external gear drives the multiple planetary gears to rotate simultaneously, and the planetary gears drive the sun gear to rotate.

2. The tie rod for a rail vehicle bogie as described in claim 1, characterized in that, The clamping plate includes an upper clamping plate, a lower clamping plate, and a welded part disposed between the upper clamping plate and the lower clamping plate. The welded part is used to fix the upper clamping plate and the lower clamping plate. The welded part, the upper clamping plate, and the lower clamping plate together form a closed space. The two ends of the pull rod body are respectively inserted and fixed in the closed space. The upper clamping plate and the lower clamping plate both have axially collinear mounting holes.

3. The tie rod for a rail vehicle bogie as described in claim 1, characterized in that, The external gear includes a disc-shaped gear carrier, internal teeth disposed on the inner circumferential wall of the gear carrier, and external teeth disposed on the outer circumferential wall. The internal teeth are used to mesh and drive with multiple planetary gears. The power output end of the driver is provided with a drive gear, which meshes and drives with the external teeth.

4. The tie rod for a rail vehicle bogie as described in claim 1, characterized in that, The left rod and / or the right rod includes two outer rods, two middle rods and an inner rod. The two ends of the inner rod are respectively inserted into one end of the two middle rods, and the other ends of the two middle rods are respectively inserted into one end of the two outer rods. The other end of one outer rod is used to connect to the first connecting part or the second connecting part, and the other end of the other outer rod is used to screw the adjusting cylinder.

5. The tie rod for a rail vehicle bogie as described in claim 1, characterized in that, The planetary carrier is connected to a machine vision inspection component for detecting the appearance quality of the pull rod body. The detection direction and the height of the machine vision inspection component on the planetary carrier are adjustable.

6. A bogie, characterized in that, The rail vehicle bogie tie rod is installed as described in any one of claims 1-5.

7. A rail vehicle, characterized in that, It is equipped with the bogie as described in claim 6.

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