Manufacturing and assembling method of cable and hydraulic combined curved clamp kit replacing straight pull rod

Abstract

The present invention discloses a method for manufacturing and assembling a cable and hydraulic combined curved clamp kit that replaces a straight pull rod, comprising the following steps: S1, manufacturing the various components that constitute the curved clamp kit, wherein the manufactured components can only be combined with adjacent components in the curved clamp kit through later assembly; S2, inserting and securing a guide tube into a hydraulic pipe; S3, passing a cable through the pipe from one end thereof, with a portion of the cable extending from both ends of the pipe; S4, connecting the ends of the cable to an upper hydraulic piston and a lower hydraulic piston, respectively; S5, installing the upper hydraulic piston rod and the lower hydraulic piston rod on the upper end surface of the upper hydraulic piston and the lower end surface of the lower hydraulic piston, respectively; S6, inserting the upper hydraulic piston and the lower hydraulic piston into an upper hydraulic cylinder and a lower hydraulic cylinder, respectively; S7, sealing and securing the upper hydraulic cylinder and the lower hydraulic cylinder to the upper and lower ends of the hydraulic pipe, respectively. The initial blanks of the hydraulic pipe and the guide tube manufactured in step S1 are both straight pipes.

Description

Technical Field

[0001] The invention relates to a manufacturing and assembling method of a cable and a hydraulic combined curved clamp kit replacing a straight pull rod, belonging to the technical field of train anti-rolling. Background Art

[0002] The anti-roll device is a flexible device that prevents the train from rolling to one side when passing through a curve or a track with a height difference on both sides. Its basic structure includes an anti-roll torsion bar, a pull rod and a support.

[0003] An anti-roll torsion bar is a rod that uses a metal elastic rod to produce torsional deformation when subjected to torque, thereby providing a torsional counter-torque. It comprises a torsion bar portion and torsion arms located at both ends of the torsion bar portion. The torsion bar portion is horizontally mounted at the bottom of the bogie frame via supports at both ends. The torsion arms at both ends remain essentially horizontal when the train is traveling over a straight road. The outer ends of the two torsion arms are connected to the two sides of the car via tie rods. The following describes the working principle of the anti-roll torsion bar device using the example of the car rolling from the left side to the right side: when the left side of the car rolls to the right side, the left car applies a pulling force to the outer end of the torsion arm on the left side through the tie rod on the left side, while the right side of the car applies downward pressure to the outer end of the torsion arm on the right side through the tie rod on the right side. According to the principle of action and reaction, this process actually works as follows: when the left side of the car rolls to the right, the left torsion arm of the anti-roll torsion bar applies a pulling force to the left side of the car through the left tie rod to prevent the left side of the car from rolling to the right; and the right torsion arm of the anti-roll torsion bar applies an upward pressure to the right side of the car through the right tie rod to prevent the right side of the car from sinking. In this process, the anti-roll torsion bar actually functions as follows: when the left side of the car rolls to the right, the left car applies a pulling force to the outer end of the left torsion arm through the left tie rod. This pulling force is converted through the torsion bar into an upward lifting force on the outer end of the right torsion arm. This lifting force is actively applied to the right side of the car through the right torsion arm. This upward lifting force actively applied to the right side of the car cooperates with the downward pulling force applied to the left car by the left tie rod, effectively resisting the left-to-right roll of the car.

[0004] Based on the aforementioned principle, most modern trains are equipped with anti-roll torsion bars. Generally, to facilitate assembly and vertical movement of the tie rod components, they are straight, and the outer sides of the bogie, where the tie rods are mounted, are also generally designed with vertical planes. However, our company's external business involves a type of bogie with concave and convex surfaces on the outer sides of the bogie. These bogies were not originally designed to be equipped with anti-roll torsion bars. When the need to add anti-roll torsion bars to these bogies arose, the straight tie rods on the sides could not be properly installed.

[0005] In order to solve the above problems, our company carried out special research and determined a technical solution for setting an anti-roll device on a bogie with pull rod obstacles on both sides. At the same time, a patent search was conducted in the industry to see if there are any technical solutions to similar problems. The result is: no patent documents were found that provide technical improvements for the above problems, but patent documents were found that solve other problems and are technically related to some of the technical solutions of this application.

[0006] Application number 202210466160.X, titled "An Adjustable Torsion Bar System and Anti-Roll Method," describes an adjustable torsion bar system and anti-roll method. The system utilizes an adjustable hydraulic connecting rod. By controlling the flow of a liquid medium, the hydraulic rod's characteristics are altered, allowing the connecting rod length to remain constant, extend in one direction, or shorten in one direction. This allows the anti-roll torsion bar system to provide either bidirectional or unidirectional anti-roll torque, meeting the safety requirements of rail vehicles on various tracks.

[0007] It can be seen from this that this application cannot solve the above-mentioned problems, the subject matter of the technical solution is different from that of this application, and only the setting of the hydraulic connecting rod adopted is relevant to this application. Summary of the Invention

[0008] To address the issue of adding an anti-roll device to a bogie with tie rods on both sides, our company proposed a series of technical improvement solutions (patent application filed on the same day), specifically including:

[0009] An anti-roll device for a bogie with tie rod obstacles on both sides comprises an anti-roll torsion bar and a support. The anti-roll torsion bar comprises a torsion bar portion and torsion arms disposed at both ends of the torsion bar portion. The torsion bar portion is laterally mounted to the bottom of the bogie frame via the support at both ends. The torsion arms at both ends remain horizontal when the train traverses a straight road. An improved solution comprises: curved force transmission mechanisms, capable of bypassing the tie rod obstacles, are disposed between the outer ends of the two torsion arms and the corresponding two sides of the car bottom. When the car rolls, the curved force transmission mechanisms transmit the force between the outer ends of the torsion arms and the sides of the car bottom.

[0010] The curved force transmission mechanism includes a hydraulic mechanism and a cable mechanism. The hydraulic mechanism transmits pressure along the curved line bypassing the obstacle set by the pull rod, and the cable mechanism transmits tension along the curved line bypassing the obstacle set by the pull rod.

[0011] The hydraulic mechanism includes a hydraulic pipe bent along a curved route that bypasses obstacles set by the pull rod, and an upper hydraulic cylinder and a lower hydraulic cylinder respectively connecting the upper and lower ends of the hydraulic pipe. The upper hydraulic cylinder has an upper hydraulic piston and an upper hydraulic piston rod connecting the upper hydraulic piston and the carriage. The lower hydraulic cylinder has a lower hydraulic piston and a lower hydraulic piston rod connecting the lower hydraulic piston and the outer end of the torsion bar arm. The space below the upper hydraulic piston in the upper hydraulic cylinder is an upper hydraulic chamber 1, and the space above the lower hydraulic piston in the lower hydraulic cylinder is a lower hydraulic chamber 1. The upper hydraulic chamber 1 extends downward through the hydraulic pipe to the lower hydraulic chamber 1, which is a closed oil pressure channel filled with hydraulic oil.

[0012] The cable mechanism includes a cable and a conduit for housing the cable, which is bent along a curved route that bypasses obstacles set by the pull rod. The cable housed in the conduit transmits the pulling force between the outer end of the torsion arm and the side of the bottom of the car body.

[0013] The conduit is sleeved and fixed in the hydraulic pipe, with an oil gap between the conduit and the hydraulic pipe. The upper end and the lower end of the cable are fixedly connected to the upper hydraulic piston and the lower hydraulic piston respectively.

[0014] The conduit is sleeved and fixed in the hydraulic pipe, and the upper port and the lower port in the hydraulic pipe are respectively provided with fixed conduit fixing frames, and the center of the conduit fixing frame has a mounting hole for sleeved and fixing the conduit.

[0015] The conduit sleeved in the hydraulic pipe is always attached to or close to the inner wall of the curved portion of the hydraulic pipe, so that the curvature of the conduit bent in the hydraulic pipe is minimized and the length is shortest.

[0016] The hydraulic pipes and conduits are rigid pipes made of metal materials with wear-resistant inner walls.

[0017] As can be seen from the above scheme, the hydraulic pipe has upper and lower hydraulic cylinders connected at both ends. The upper and lower hydraulic cylinders contain upper and lower hydraulic pistons, respectively. A cable is inserted into a conduit, which is then inserted and fixed into the hydraulic pipe. An oil-passing gap exists between the hydraulic pipe and the conduit. Hydraulic oil is contained in both the hydraulic pipe and the conduit, with pressure transmitted by the hydraulic oil and tension transmitted by the cable. Thus, the hydraulic pipe, upper and lower hydraulic cylinders, upper and lower hydraulic pistons, cable, and conduit form a curved clamp kit that transmits tension and pressure along a curved path, replacing the cable and hydraulic combination of the straight pull rod in an anti-roll torsion bar device. The manufacture and assembly of this curved clamp kit requires overcoming numerous technical challenges, primarily the need to transmit force along a curved path, the need for sealing, and, in particular, the need to insert the curved conduit into the curved hydraulic pipe. This is generally difficult to accomplish without resorting to cutting, sectioning, and welding. However, such procedures increase the complexity of the assembly process and make it difficult to ensure absolute sealing and bonding strength.

[0018] The technical problem to be solved by the present invention is: how to manufacture and assemble a curved clamp kit.

[0019] In view of the above problems, the technical solution proposed by the present invention is:

[0020] A method for manufacturing and assembling a cable and hydraulic combined curved clamp kit for replacing a straight pull rod is characterized by comprising the following steps:

[0021] S1. Fabricate the components that constitute the curved clamp kit, wherein the fabricated components can only be combined with adjacent components in the curved clamp kit through later assembly;

[0022] S2. Put the catheter into the hydraulic pipe and fix it;

[0023] S3. Pass the cable through the catheter from one end of the catheter, and extend a portion of the cable from both ends of the catheter;

[0024] S4. Connect the two ends of the cable to the upper hydraulic piston and the lower hydraulic piston respectively;

[0025] S5. Install the upper hydraulic piston rod and the lower hydraulic piston rod on the upper end surface of the upper hydraulic piston and the lower end surface of the lower hydraulic piston respectively;

[0026] S6. Install the upper hydraulic piston and the lower hydraulic piston into the upper hydraulic cylinder and the lower hydraulic cylinder respectively;

[0027] S7. Seal and fix the upper hydraulic cylinder and the lower hydraulic cylinder to the upper and lower ends of the hydraulic pipe respectively.

[0028] The hydraulic pipe and conduit initial blanks produced in step S1 are both straight pipes.

[0029] Inserting and fixing the conduit into the hydraulic pipe as described in step S1 includes the following steps:

[0030] S101, fixing two conduit fixing brackets to the upper port and the lower port in the hydraulic pipe respectively;

[0031] S102, inserting the catheter into the mounting hole of the catheter fixing frame at one end of the hydraulic pipe and extending the catheter out of the mounting hole of the catheter fixing frame at the other end of the hydraulic pipe through the hydraulic pipe, ensuring that the catheter can move in the mounting hole of the catheter fixing frame;

[0032] S103, applying a force to bend the hydraulic pipe, so that the bending of the hydraulic pipe forces the conduit inside the hydraulic pipe to bend together;

[0033] S104, welding and fixing the catheter to the catheter fixing frame;

[0034] S105. Cut off the excess conduits at both ends of the hydraulic pipe.

[0035] According to the bending process performed in sub-step S101 of step S1, two conduit fixing frames are respectively fixed to the upper port and the lower port in the hydraulic pipe by welding.

[0036] According to the bending process performed in sub-step S101 of step S1, the two conduit fixing frames are respectively fixed to the upper port and the lower port in the hydraulic pipe in a threaded manner.

[0037] The bending process performed in sub-step S103 of step S1 is a cold bending process performed at room temperature by simply applying an external force.

[0038] The bending process performed in sub-step S103 of step S1 is a process that combines the application of external force with heating, and the heating is limited to the outer side of the bending part.

[0039] In step S7, the upper and lower hydraulic cylinders are sealed and fixed to the upper and lower ends of the hydraulic pipe, respectively, by welding. Advantageous Effects: The curved conduit in the finished curved clamp kit can be positioned within the curved hydraulic pipe without cutting or severing the hydraulic pipe and then welding and sewing it. Furthermore, the resulting assembly is optimally suited for pulling the cable within the conduit, resulting in a large-radius bend that is as close to a straight curve as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic cross-sectional view of the curved clamp kit for completing the assembly;

[0041] Figure 2 A schematic cross-sectional view of the disassembled curved clamp kit;

[0042] Figure 3 It is a cross-sectional schematic diagram of assembling the conduit fixing frame when the hydraulic pipe is a blank;

[0043] Figure 4 The figure is a cross-sectional view of the hydraulic pipe and the conduit being blanks, with the conduit being sleeved inside the hydraulic pipe to be bent. The arrows in the figure indicate the position and direction of force on the hydraulic pipe during bending.

[0044] Figure 5 The position and direction of the pressure applied by the pressure column on the mold to the hydraulic pipe when the pressure is applied to the hydraulic pipe to make it bend. The arrow points to the direction of pressure.

[0045] Figure 6 This is a cross-sectional schematic diagram of the catheter pressing against the inner wall of the hydraulic pipe after the bending is completed. The circle in the figure shows the catheter pressing against the inner wall of the hydraulic pipe inside the bent part.

[0046] In the figure: 1. Hydraulic pipe; 2. Upper hydraulic cylinder; 3. Lower hydraulic cylinder; 4. Upper hydraulic piston; 5. Upper hydraulic piston rod; 6. Lower hydraulic piston; 7. Lower hydraulic piston rod; 8. Conduit; 9. Cable; 10. Oil-passing interval; 11. Conduit fixing bracket; 112. Mounting hole; 12. Pressure column. DETAILED DESCRIPTION

[0047] like Figure 1 As shown, the curved clamp kit to be manufactured and assembled in the present invention includes a hydraulic pipe 1 and an upper hydraulic cylinder 2 and a lower hydraulic cylinder 3 respectively connected to the upper and lower ends of the hydraulic pipe 1, the upper hydraulic cylinder 2 has an upper hydraulic piston 4 and an upper hydraulic piston rod 5 connecting the upper hydraulic piston 4 and the carriage, the lower hydraulic cylinder 3 has a lower hydraulic piston 6 and a lower hydraulic piston rod 7 connecting the lower hydraulic piston 6 and the outer end of the torsion bar arm, the curved clamp kit also includes a cable 9 and a conduit 8 for fitting the cable 9; the cable 9 is fitted in the conduit 8.

[0048] The conduit 8 is sleeved and fixed in the hydraulic pipe 1, with an oil gap 10 between the conduit 8 and the hydraulic pipe 1. The upper end and the lower end of the cable 9 are fixedly connected to the upper hydraulic piston 4 and the lower hydraulic piston 6 respectively.

[0049] The conduit 8 is sleeved and fixed in the hydraulic pipe 1 , and a conduit fixing frame 11 is provided at the upper and lower ends of the hydraulic pipe 1 . The center of the conduit fixing frame 11 has a mounting hole 112 for sleeved and fixing the conduit 8 .

[0050] The conduit 8 sleeved in the hydraulic pipe 1 is always attached to or close to the inner wall of the curved portion of the hydraulic pipe 1, so that the curvature of the conduit 8 in the hydraulic pipe 1 is minimized and the length is shortest.

[0051] The hydraulic pipe 1 and the conduit 8 are rigid pipes made of metal material with wear-resistant inner walls.

[0052] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example 1

[0053] A method for manufacturing and assembling a cable and hydraulic combined curved clamp kit for replacing a straight pull rod comprises the following steps:

[0054] S1. Make the components that make up the curved clamp kit. The components can only be combined with the adjacent components in the curved clamp kit through later assembly. That is, the two components that are fixedly connected in the curved clamp kit cannot be made into one piece when making the two components. For example, the upper hydraulic cylinder 2 and the hydraulic pipe 1 can only be fixedly connected through later assembly. Figure 2 shown.

[0055] S2. Fit and fix the conduit 8 into the hydraulic pipe 1, as shown in Figure 4As shown;

[0056] S3, pass the cable 9 through the catheter 8 from one end of the catheter 8, and make the cable 9 extend partly at both ends of the catheter 8, as shown in FIG. Figure 4 As shown;

[0057] S4, connect the two ends of the cable to the upper hydraulic piston 4 and the lower hydraulic piston 6 respectively, as shown in Figure 1 As shown;

[0058] S5, install the upper hydraulic piston rod 5 and the lower hydraulic piston rod 7 on the upper end surface of the upper hydraulic piston 4 and the lower end surface of the lower hydraulic piston 6 respectively, as shown in FIG. Figure 1 As shown;

[0059] S6, the upper hydraulic piston 4 and the lower hydraulic piston 6 are respectively mounted in the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3, as shown in FIG. Figure 1 As shown;

[0060] S7, seal and fix the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3 to the upper and lower ends of the hydraulic pipe 1 respectively, as shown in FIG. Figure 1 shown.

[0061] In this way, the production and assembly of the curved clamp kit can be completed through the above steps.

[0062] like Figure 2 、 3 As shown in Figures 4 and 5, the initial blanks of the hydraulic pipe 1 and the conduit 8 produced in step S1 are straight pipes, so that the conduit 8 can be smoothly inserted into the hydraulic pipe 1. If the hydraulic pipe 1 and the conduit 8 are curved, the hydraulic pipe 1 can only be axially split or cut into multiple sections before the conduit 8 can be inserted and fixed into the hydraulic pipe 1, which will significantly increase the workload and affect the strength of the hydraulic pipe 1.

[0063] The process of inserting and fixing the conduit 8 into the hydraulic pipe 1 as described in step S1 includes the following steps:

[0064] S101, fix the two conduit fixing frames 11 to the upper port and the lower port of the hydraulic pipe 1 respectively. Figure 3 shown.

[0065] S102, insert the conduit 8 into the mounting hole 112 of the conduit fixing frame 11 at one end of the hydraulic pipe 1, and extend it out from the mounting hole 112 of the conduit fixing frame 11 at the other end of the hydraulic pipe 1 through the hydraulic pipe 1, ensuring that the conduit 8 can move in the mounting hole 112 of the conduit fixing frame 11. This will ensure smooth bending in the next step, because when bending, the conduit 8 will become shorter relative to the length of the hydraulic pipe 1, and excess conduit 8 will extend outward from the mounting hole 112. Figure 4 shown.

[0066] S103, applying a bending force to the hydraulic pipe 1, and the bending of the hydraulic pipe 1 forces the conduit 8 inside the hydraulic pipe 1 to bend together. In this way, it is sufficient for the hydraulic pipe 1 to be bent into the required shape, and the closer the conduit 8 is to a straight pipe inside the hydraulic pipe 1, the better. This not only reduces the difficulty of bending the conduit, but also reduces the friction resistance between the cable 9 and the inner wall of the conduit 8, ensuring the service life of the cable 9 and the conduit 8. At the same time, when the cable is stretched, the hydraulic pipe 1 outside can also help the conduit 8 resist deformation, such as Figure 4 、 5 , as shown in 6.

[0067] S104, welding the catheter 8 to the catheter fixing frame 11;

[0068] S105 , cutting off the redundant guide tubes 8 at both ends of the hydraulic pipe 1 .

[0069] like Figure 5 As shown, in step S103 , a force is applied to the hydraulic pipe 1 to bend it, generally using a pressure column 12 on a bending mold.

[0070] In step S7, the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3 are sealed and fixed to the upper end and the lower end of the hydraulic pipe 1 respectively by welding.

[0071] According to the bending process performed in sub-step S101 of step S1 , two conduit fixing frames 11 are respectively fixed to the upper end and the lower end of the hydraulic pipe 1 by welding.

[0072] The bending process performed in sub-step S103 of step S1 is a cold bending process performed at room temperature by simply applying an external force. Example 2

[0073] The difference is that, in the bending process performed in sub-step S101 of step S1 , the two conduit fixing frames 11 are respectively fixed to the upper port and the lower port in the hydraulic pipe 1 by threaded engagement. Example 3

[0074] The bending process performed in sub-step S103 of step S1 is a process that combines the application of external force with heating, and the heating is limited to the outer side of the bending part.

[0075] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the scope of protection covered by the present invention. Any modifications in equivalent forms should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A method for manufacturing and assembling a cable and hydraulic combined curved clamp kit to replace a straight pull rod, characterized in that: The steps include: S1. Fabricate the components that constitute the curved clamp kit, wherein the fabricated components can only be combined with adjacent components in the curved clamp kit through later assembly; S2, inserting and fixing the conduit (8) into the hydraulic pipe (1); S3, passing the cable (9) through the catheter (8) from one end thereof, and making the cable (9) extend partially from both ends of the catheter (8); S4, connecting the two ends of the cable to the upper hydraulic piston (4) and the lower hydraulic piston (6) respectively; S5. Install the upper hydraulic piston rod (5) and the lower hydraulic piston rod (7) on the upper end surface of the upper hydraulic piston (4) and the lower end surface of the lower hydraulic piston (6), respectively; S6. Insert the upper hydraulic piston (4) and the lower hydraulic piston (6) into the upper hydraulic cylinder (2) and the lower hydraulic cylinder (3) respectively; S7. Seal and fix the upper hydraulic cylinder (2) and the lower hydraulic cylinder (3) to the upper and lower ends of the hydraulic pipe (1) respectively.

2. The method for manufacturing and assembling the cable and hydraulic combined curved clamp kit for replacing the straight pull rod as claimed in claim 1, characterized in that: The initial blanks of the hydraulic pipe (1) and the conduit (8) produced in step S1 are both straight pipes.

3. The method for manufacturing and assembling the cable and hydraulic combined curved clamp kit for replacing the straight pull rod as claimed in claim 2, characterized in that: The process of inserting and fixing the conduit (8) into the hydraulic pipe (1) as described in step S2 includes the following sub-steps: S101, fixing two catheter fixing frames (11) to the upper port and the lower port of the hydraulic pipe (1) respectively; S102, inserting the conduit (8) into the mounting hole (112) of the conduit fixing frame (11) at one end of the hydraulic pipe (1), and extending the conduit (8) out of the mounting hole (112) of the conduit fixing frame (11) at the other end of the hydraulic pipe (1) through the hydraulic pipe (1), ensuring that the conduit (8) can move in the mounting hole (112) of the conduit fixing frame (11); S103, applying a force to the hydraulic pipe (1) to cause it to bend, so that the bending of the hydraulic pipe (1) forces the inner guide tube (8) of the hydraulic pipe (1) to bend together; S104, welding the catheter (8) to the catheter fixing frame (11); S105, cutting off the redundant conduits (8) at both ends of the hydraulic pipe (1).

4. The method for manufacturing and assembling the cable and hydraulic combined curved clamp kit for replacing the straight pull rod as claimed in claim 3, characterized in that: The two conduit fixing frames (11) are respectively fixed to the upper port and the lower port in the hydraulic pipe (1) by welding.

5. The method for manufacturing and assembling the cable and hydraulic combined curved clamp kit for replacing the straight pull rod as claimed in claim 3, characterized in that: The two conduit fixing frames (11) are respectively fixed to the upper port and the lower port in the hydraulic pipe (1) by means of threaded engagement.

6. The method for manufacturing and assembling the cable and hydraulic combined curved clamp kit for replacing the straight pull rod as claimed in claim 3, characterized in that: The bending process performed in sub-step S103 of step S2 is a cold bending process performed at room temperature by simply applying an external force.

7. The method for manufacturing and assembling the cable and hydraulic combined curved clamp kit for replacing the straight pull rod as claimed in claim 3, characterized in that: The bending process performed in sub-step S103 of step S2 is a process that combines the application of external force with heating, and the heating is limited to the outer side of the bending part.

8. The method for manufacturing and assembling the cable and hydraulic combined curved clamp kit for replacing the straight pull rod as claimed in claim 1, characterized in that: In step S7, the upper hydraulic cylinder (2) and the lower hydraulic cylinder (3) are sealed and fixed to the upper end and the lower end of the hydraulic pipe (1) respectively by welding.

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