The monorail stabilizing device and its assembly and welding method

Abstract

This invention discloses a track stabilization device and its assembly welding method. The method includes: welding a rotating guide rail to a flange. The rotating guide rail has a rotating hole on its end face and a spiral guide groove on its peripheral wall. The spiral guide groove radially penetrates the peripheral wall to form a through-hole on the other side. The spiral guide groove is used to install a positioning shaft. When the positioning shaft rotates to the bottom of the spiral guide groove, its axial direction is axis A. The line connecting the two fixing holes on the flange is axis B. When welding the rotating guide rail to the flange, axis A and axis B are kept coplanar, and an angle θ is allowed. The rotating shaft is installed into the rotating hole. The rotating shaft has a mounting hole along its radial direction, and the mounting hole is parallel to axis A. The positioning shaft is installed into the mounting hole. A rocker arm is placed on top of the rotating shaft, and the rocker arm is rotated to position it so that it forms an angle of -θ with the rotating shaft to compensate for the error of axis A and axis B not being coplanar. Spot welding is then performed. The rocker arm is then welded to the rotating shaft. This method reduces the difficulty of positioning.

Description

Technical Field

[0001] This invention belongs to the field of monorail stabilizers, and more specifically, relates to a monorail stabilizer device and its assembly and welding method. Background Technology

[0002] Monorail is a suspended monorail transit system that has been operating in Germany for decades, but has not yet been officially implemented in China. Monorail is particularly suitable for urban rail transit in small and medium-sized cities, and can also serve as an extension of the subway in large cities, providing connections to hospitals, schools, residential areas, and other facilities.

[0003] When a monorail vehicle stops near a station, passengers tend to concentrate around the doors, which increases the load on the area near the doors and causes lateral load imbalance. Due to this imbalance and the vehicle's low lateral stiffness, the doors move away from the platform, increasing the distance between the doors and the platform steps and posing a safety risk. At the same time, the vehicle sways laterally during passenger boarding and alighting, resulting in poor passenger comfort. The introduction of a stabilizer can largely solve this problem.

[0004] The stabilizing device of a general vehicle stabilizer has high requirements for assembly and positioning during welding, requiring the design of various positioning fixtures, which makes the process difficult and results in low production efficiency. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a rail-mounted vehicle stabilization device with reduced positioning requirements and its assembly and welding method.

[0006] The present invention adopts the following technical solutions.

[0007] A welding method for assembling a monorail stabilizing device includes the following steps:

[0008] S1: Weld the rotary guide rail to the flange. The end face of the rotary guide rail is provided with a rotating hole, and the peripheral wall is provided with a spiral guide groove. The spiral guide groove radially penetrates the peripheral wall to form a through-hole on the other side. The spiral guide groove is used to install the positioning shaft. When the positioning shaft rotates to the bottom of the spiral guide groove, the axial direction is the A-axis. The line connecting the two fixing holes on the flange is the B-axis. When welding the rotary guide rail to the flange, keep the A-axis and the B-axis coplanar and allow for an angle of deflection θ.

[0009] S2: Insert the rotating shaft into the rotating hole. The rotating shaft has a mounting hole along its radial direction. Make the mounting hole parallel to axis A.

[0010] S3: Insert the positioning shaft into the mounting hole, and install bearings and nuts at both ends of the positioning shaft respectively;

[0011] S4: Place the rocker arm on top of the rotating shaft, rotate the rocker arm so that it forms an angle of -θ with the rotating shaft to compensate for the error of the non-coplanarity of the A-axis and B-axis, and then perform spot welding;

[0012] S5: Weld the joystick to the rotating shaft.

[0013] Furthermore, the rotary guide rail includes a first shaft, a second shaft, and a third shaft connected in sequence, with the diameters of the first shaft, the second shaft, and the third shaft decreasing sequentially; the flange is sleeved on the second shaft and welded to the first shaft.

[0014] Further, in step S3, the flange is fixed to the positioning device with bolts, and then the positioning shaft is installed.

[0015] An assembly method for a monorail stabilizing device, comprising:

[0016] The rotary guide mechanism includes:

[0017] The rotary guide rail has a rotating hole on its end face and a spiral guide groove on its peripheral wall.

[0018] Flange, welded to the rotary guide rail;

[0019] The joystick mechanism includes:

[0020] A rocker arm is rotatably disposed in the rotating hole and has a mounting hole along its radial direction;

[0021] A rotating shaft is welded to the top of the rocker arm;

[0022] A positioning shaft passes through the mounting hole, and bearings and nuts are respectively provided at both ends of the positioning shaft, with the bearings and nuts located in the spiral guide groove.

[0023] Furthermore, the rocker mechanism also includes:

[0024] Two stepped shafts are respectively located at both ends of the rotating shaft;

[0025] A traction seat is located on the rotating shaft.

[0026] Furthermore, when the positioning shaft rotates to the bottom of the spiral guide groove, its axial direction is axis A, and the line connecting the two fixing holes on the flange is axis B. Axis A and axis B are coplanar and have an angle θ. The rocker arm and the rotating shaft form an angle of -θ to compensate for the error that axis A and axis B are not coplanar. Beneficial effects

[0027] In practical use, the flange is fixed to the mounting base of the monorail vehicle. The B-axis corresponds to the position perpendicular to the vehicle. In the initial state, the rocker arm needs to be kept parallel to the vehicle, at which point the positioning shaft and mounting hole are at the bottom of the spiral guide groove (corresponding to the A-axis position).

[0028] According to the traditional assembly process, the rotary guide rail is first welded to the flange, then the rocker arm is welded to the rotating shaft, and finally the rotating shaft is installed into the rotary guide rail. Therefore, the positioning requirements are as follows: the rotary guide rail and the flange must be positioned in the same plane as the flange's B axis, and the rocker arm and the rotating shaft must be positioned perpendicular to the rocker arm.

[0029] Because the spiral guide surface of the rotary guide is an irregularly shaped structure, traditional processes present significant challenges in positioning the A-axis and B-axis, making it difficult to guarantee positioning accuracy. The positioning between the rocker arm and the rotating shaft also requires specific tooling equipment to ensure accuracy.

[0030] In this invention, the rotary guide rail is first welded to the flange, then the rotating shaft is installed into the rotary guide rail, and finally the rocker arm is welded to the rotating shaft. When welding the rotary guide rail to the flange, the A-axis and B-axis are kept coplanar, but an error, i.e., an angle θ, is allowed. When welding the rocker arm to the rotating shaft, the positioning requirement between the rocker arm and the rotating shaft is abandoned; instead, the rocker arm is positioned at an angle of -θ with the rotating shaft to compensate for the error caused by the non-coplanarity of the A-axis and B-axis.

[0031] Therefore, by adjusting the assembly sequence, this invention can eliminate the precision requirement for the coplanarity of axes A and B, thereby significantly reducing the difficulty of this process and improving production efficiency. This invention transforms two precise positioning requirements into a single, routine positioning, reducing assembly difficulty and increasing production efficiency. This vehicle stabilizing device is used as a complete set during operation and is replaced as a complete set during maintenance; therefore, this assembly method does not affect the interchangeability of the product. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the welded assembly of the air rail stabilizing device according to an embodiment of the present invention.

[0033] Figure 2 This is a three-dimensional schematic diagram of the rotating guide rail mechanism of the air rail stabilizing device according to an embodiment of the present invention.

[0034] Figure 3 for Figure 2 A schematic diagram of the rotary guide rail of the rotary guide rail mechanism.

[0035] Figure 4 for Figure 2 A schematic diagram of the flange of the rotary guide mechanism.

[0036] Figure 5 This is a schematic diagram of the rocker arm mechanism of the track stabilizer in an embodiment of the present invention.

[0037] In the picture:

[0038] Stable wheel 1, rocker arm mechanism 2, rotating guide rail mechanism 3, positioning shaft 4, spacer 5, bearing 6, nut 7, rotating guide rail 11, flange 1, stepped shaft 21, rocker arm 22, rotating shaft 23, traction seat 24. Detailed Implementation

[0039] The present invention will now be further described with reference to specific embodiments and accompanying drawings.

[0040] See Figure 1-5 This invention provides a welding method for assembling a monorail stabilizing device, comprising the following steps:

[0041] S1: Weld the rotary guide rail 11 to the flange 12. The rotary guide rail 11 has a rotating hole on its end face and a spiral guide groove on its peripheral wall. The spiral guide groove radially penetrates the peripheral wall and forms a through opening on the other side. The spiral guide groove is used to install the positioning shaft 4. When the positioning shaft 4 rotates to the bottom of the spiral guide groove, its axial direction is the A-axis. The line connecting the two fixing holes on the flange 12 is the B-axis. When welding the rotary guide rail to the flange, keep the A-axis and the B-axis coplanar and allow for an angle θ.

[0042] S2: Insert the rotating shaft 23 into the rotating hole. The rotating shaft 23 is provided with a mounting hole along its radial direction. Make the mounting hole parallel to the A-axis.

[0043] S3: Insert the positioning shaft 4 into the mounting hole;

[0044] S4 Place the rocker arm 22 on top of the rotating shaft 23, rotate the rocker arm so that it forms an angle of -θ with the rotating shaft 23 to compensate for the error of the non-coplanarity of the A-axis and the B-axis, and perform spot welding;

[0045] S5: Weld the rocker arm 22 to the rotating shaft 23.

[0046] In the illustrated embodiment, the shaft 4 is also provided with a spacer 5, a bearing 6 and a nut 7.

[0047] Furthermore, the rotary guide rail 11 includes a first shaft, a second shaft, and a third shaft connected in sequence, with the diameters of the first shaft, the second shaft, and the third shaft decreasing sequentially; the flange is sleeved on the second shaft and welded to the first shaft.

[0048] Further, in step S3, the flange 12 is fixed to the positioning device by bolts.

[0049] The present invention also provides an air rail stabilizing device assembled by a welding method for an air rail stabilizing device, comprising:

[0050] Rotary guide mechanism 3 includes:

[0051] The rotary guide rail 11 has a rotating hole on its end face and a spiral guide groove on its peripheral wall.

[0052] Flange 12 is welded to the rotary guide rail;

[0053] The joystick mechanism 2 includes:

[0054] The rocker arm 22 is rotatably disposed in the rotating hole and has a mounting hole along its radial direction;

[0055] Rotating shaft 23 is welded to the top of rocker arm 22;

[0056] The positioning shaft 4 passes through the mounting hole, and bearings 6 and nuts 7 are respectively provided at both ends of the positioning shaft 4. The bearings 6 and nuts 7 are located in the spiral guide groove.

[0057] Furthermore, the rocker mechanism 2 also includes:

[0058] Two stepped shafts 21 are respectively disposed at both ends of the rotating shaft 23;

[0059] The traction seat 24 is located on the rotating shaft.

[0060] The A-axis and B-axis are coplanar and have an angle θ; the rocker arm and the rotation axis form an angle of -θ to compensate for the error caused by the A-axis and B-axis not being coplanar.

[0061] The stabilizing device is used by driving the traction seat 24 to rotate through the drive mechanism, which in turn drives the rocker arm mechanism 2 to rotate in a circle. The function of the rotating guide rail 11 is to limit the rotation angle and realize the movement in the height direction. In this way, this set of mechanisms realizes the functions of circular rotation and height increase, which meets the needs of use.

[0062] The examples described herein are merely preferred embodiments of the invention and are not intended to limit the concept and scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the invention without departing from the design concept of the invention should fall within the protection scope of the invention.

Claims

1. A welding method for assembling a monorail stabilizing device, characterized in that, Including the following steps: S1: Weld the rotary guide rail to the flange. The rotary guide rail has a rotating hole on its end face and a spiral guide groove on its peripheral wall. The spiral guide groove radially penetrates the peripheral wall and forms a through-hole on the other side. The spiral guide groove is used to install the positioning shaft. When the positioning shaft rotates to the bottom of the spiral guide groove, its axial direction is the A-axis. The line connecting the two fixing holes on the flange is the B-axis. When welding the rotary guide rail to the flange, keep the A-axis and the B-axis non-coplanar and allow for an angle θ. S2: Insert the rotating shaft into the rotating hole. The rotating shaft has a mounting hole along its radial direction. Make the mounting hole parallel to axis A. S3: Insert the positioning shaft into the mounting hole; S4: Place the rocker arm on top of the rotating shaft, rotate the rocker arm so that it forms an angle of -θ with the rotating shaft to compensate for the error of the non-coplanarity of the A-axis and B-axis, and then perform spot welding; S5: Weld the joystick to the rotating shaft.

2. The assembly and welding method of the air rail stabilizing device according to claim 1, characterized in that, The rotary guide rail includes a first shaft, a second shaft, and a third shaft connected in sequence, with the diameters of the first shaft, the second shaft, and the third shaft decreasing sequentially; the flange is fitted onto the second shaft and welded to the first shaft.

3. The assembly and welding method of the air rail stabilizing device according to claim 1, characterized in that, In step S3, the flange is fixed to the positioning device with bolts, and then the positioning shaft is installed.

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