A turnout hanger and gravity center adjustment method and ground support system and method

Abstract

The present invention relates to the field of turnout hangers, and specifically to a turnout hanger and a method for adjusting the center of gravity, as well as a ground support system and method, wherein the turnout hanger includes a working beam, a central hook hanger, and a side hanger. A load platform and a trolley track arranged along the length of the working beam are integrated at the top of the working beam. The load platform is used to carry counterweights. The transport trolley moves on the trolley track to transport the counterweights on the load platform, thereby changing the position distribution of the counterweights on the load platform and adjusting the center of gravity of the working beam. The embodiment of the present invention uses an active control mode of adjusting its own center of gravity to offset eccentricity instead of the traditional passive mode of adjusting the lifting point to adapt to the center of gravity, thereby improving the flexibility and adaptability of the system. In addition, the center of gravity adjustment system is attached to the top of the working beam, without changing the main load-bearing structure of the working beam, thereby reducing the research and development difficulty and safety verification cost of the turnout hanger.

Description

Technical Field

[0001] The present invention relates to the field of turnout spreaders, and in particular to a turnout spreader.

[0002] The invention also relates to a method for adjusting the center of gravity of a turnout hanger.

[0003] The invention also relates to a ground support system for a turnout spreader.

[0004] The invention also relates to a ground support method for a turnout spreader. Background Art

[0005] Railway turnouts, as critical components of railway lines, are complex, heavy, and unevenly distributed, often resulting in their physical center of gravity significantly offset from their geometric center. Traditional lifting operations typically utilize a turnout spreader (also known as a shoulder beam or balance beam). The standard operating procedure is as follows: a crane hook connects to the center lifting point of the spreader, which is then attached to the turnout via lifting straps on both sides.

[0006] The existing technology has the following two main technical problems:

[0007] Lateral eccentricity problem: When the center of gravity of the turnout is offset to one side of the turnout spreader (perpendicular to the length direction of the turnout spreader), the problem can be relatively easily solved by fine-tuning the horizontal rotation angle of the turnout spreader so that the lifting point is aligned directly above the center of gravity.

[0008] Longitudinal eccentricity problem: When the center of gravity of the turnout is offset to one end of the turnout spreader (along the length of the turnout spreader), after lifting, the turnout spreader and the turnout will be severely tilted along the length direction, posing a safety hazard and difficult to correct.

[0009] To solve the problem of longitudinal eccentricity, existing technologies (such as CN215208020U, a special spreader for turnout loading and unloading) have proposed a solution, namely, providing a hook hanger on the top of the turnout spreader that can move along its length. However, this solution requires the integration of complex transmission or mechanical devices inside the turnout spreader, which not only significantly increases the manufacturing cost and structural complexity of the turnout spreader, but is also likely to weaken the structural strength and reliability of the turnout spreader itself. Summary of the Invention

[0010] The purpose of the present invention is to provide a turnout spreader and a method for adjusting the center of gravity thereof, as well as a ground support system and method, so as to solve the problem that the traditional method of changing the total center of gravity of the turnout spreader and the turnout increases the manufacturing cost and structural complexity of the turnout spreader, and also weakens the structural strength and reliability of the turnout spreader itself.

[0011] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0012] A turnout hanger comprises: a working beam for bearing the load of a turnout; a central hook hanger arranged at the geometric center of the top of the working beam and used for connecting a hook of a crane; a plurality of side hangers arranged on both sides of the working beam and used for connecting flexible lifting belts to suspend the turnout; a center of gravity adjustment system integrated on the top of the working beam, the center of gravity adjustment system comprising: a plurality of counterweights; a load platform arranged along the length direction of the working beam and used for bearing the counterweights; a trolley track arranged on the top of the working beam and located below the load platform; a transport trolley, the transport trolley being able to move on the trolley track and being configured to transport the counterweights to change the position distribution of the counterweights on the load platform, thereby adjusting the center of gravity of the working beam.

[0013] Furthermore, the transport trolley includes: a walking system for driving the transport trolley to move along the trolley track; and a lifting system for lifting the counterweight from the load platform or placing it onto the load platform.

[0014] Furthermore, the load platform is composed of two parallel track-type vertical walls arranged along the length direction of the working beam, and the counterweight is designed to be able to ride on the load platform.

[0015] Furthermore, the central hook hanger is connected to the working beam through force arms on both sides, and the force arms bypass the sub-trolley track and the load platform to connect the two sides of the working beam.

[0016] A method for adjusting the center of gravity of a turnout hoist comprises the following steps: connecting the working beam to the turnout to be hoisted; driving the transport vehicle to move one or more counterweights on the load platform of the working beam to redistribute their positions; and moving the combined center of gravity of the combination of the working beam and the counterweights through the position redistribution of the counterweights to offset the eccentric moment of the turnout, thereby positioning the combined center of gravity of the working beam, the counterweights, and the turnout directly below the center hook hanger to achieve horizontal balance during hoisting.

[0017] A ground support system for a turnout spreader, comprising: a warehouse beam, the top of which is provided with a load platform and a trolley track having the same structure as that of the top of the working beam, for storing the counterweight and parking the transport trolley; a transport mother vehicle, which is capable of moving between the working beam and the end of the warehouse beam and is provided with a trolley track that can dock with the trolley tracks of the working beam and the warehouse beam, for transferring the transport trolley and the counterweight between the working beam and the warehouse beam; a positioning jig, for fixing and accurately positioning the working beam on the ground support system, to ensure that the trolley track of the working beam is aligned with the trolley track of the transport mother vehicle.

[0018] Furthermore, the positioning fixture includes: a roller table, used to carry and laterally constrain the working beam; a positioning push rod, installed at one end of the roller table, used to push the working beam longitudinally; a thrust mechanism, installed at the other end of the roller table, used to provide a thrust force for the end of the working beam to constrain the longitudinal position of the working beam.

[0019] Furthermore, the number of the warehouse beams is greater than 1 and they are arranged side by side from top to bottom, and the transport mother vehicle includes: a transport platform, a top of which is provided with a sub-vehicle track that can be docked with the sub-vehicle track of the working beam and the warehouse beam; an elevator, used to drive the transport platform to rise and fall in the vertical direction to align with the warehouse beam levels at different heights; a transverse machine, used to drive the elevator and the transport platform to move horizontally between the working beam and the warehouse beam.

[0020] A ground support method for a ground support system includes the step of pre-configuring counterweights: before the working beam is connected to the switch to be hoisted, the transport mother vehicle and the transport sub-vehicle work together to transfer a predetermined number of counterweights from the warehouse beam to the working beam.

[0021] Furthermore, it also includes the step of resetting the counterweight: after the lifting operation is completed, the working beam is lifted to the positioning fixture on the ground support system, and the positioning fixture accurately positions the working beam in the horizontal and vertical directions so that the sub-trolley track of the working beam is aligned with the track of the transport mother vehicle, and the transport sub-trolley and the transport mother vehicle are used to work together to transfer the counterweight on the working beam back to the warehouse beam.

[0022] Compared with the prior art, this application has the following beneficial effects:

[0023] Provided are a turnout spreader, a center of gravity adjustment method, and a ground support system and method. An active control mode of adjusting the center of gravity to offset eccentricity replaces a traditional passive mode of adjusting the lifting point to adapt to the center of gravity, thereby improving the flexibility and adaptability of the system. Furthermore, the center of gravity adjustment system is attached to the top of the working beam without changing the main load-bearing structure of the working beam, thereby reducing the research and development difficulty and safety verification cost of the turnout spreader. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0025] Figure 1A perspective view of a turnout hanger according to an embodiment of the present invention;

[0026] Figure 2 A side view of a turnout hanger according to an embodiment of the present invention;

[0027] Figure 3 A perspective view of a ground support system according to an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of step 2 of the ground support method according to an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of step 1 of the ground support method according to an embodiment of the present invention;

[0030] Figure 6 for Figure 5 Cross-sectional view in the AA direction;

[0031] The numbers in the figure represent the following:

[0032] 1-working beam; 11-load platform; 12-trolley track; 2-center hook hanger; 21-arm; 3-transport trolley; 31-travel system; 32-lifting system; 4-counterweight; 5-positioning fixture; 51-roller table; 52-positioning push rod; 53-thrust mechanism; 54-special-shaped roller; 6-warehouse beam; 7-transport trolley; 71-transport platform; 72-elevator; 73-transverse machine. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] This proposal proposes a turnout spreader and a dynamic center of gravity adjustment system thereof, aiming to achieve safe, accurate and efficient turnout hoisting balance control without changing the main structural strength of the turnout spreader and the position of the lifting point.

[0035] refer to Figure 1 The turnout hanger of this solution basically adopts the mature structure of the traditional working beam, including: working beam 1, center hook hanger 2, and side hanger (side hanger is not shown in the figure).

[0036] The working beam 1 is a steel structure beam that bears the main load. The central hook hanger 2 is located at the geometric center of the top of the working beam 1. The central hook hanger 2 is used to connect the hook of the crane. Several side hangers are located on both sides of the working beam 1 and are distributed along the length of the working beam 1. The side hangers are used to connect flexible lifting belts. The flexible lifting belts are used to bypass the bottom of the turnout to connect the turnout to the side hangers.

[0037] refer to Figure 2 In order to adjust the center of gravity position of the working beam 1, a center of gravity adjustment system is additionally integrated on the top of the working beam 1, which includes: a load platform 11, a trolley track 12, a transport trolley 3 and several counterweights 4.

[0038] The load platform 11 is two parallel track-type vertical walls arranged along the length of the working beam 1. The top of the platform has been specially treated (with higher friction or a slot that matches the counterweight 4) to stably carry the modular counterweight 4. The counterweight 4 is designed as a standard weight that can ride astride the two vertical walls.

[0039] The sub-trolley track 12 is located between the two load platforms 11, and its track surface is lower than the top surface of the platform.

[0040] The transport vehicle 3 is a miniature vehicle that can move autonomously on the vehicle track 12 . The transport vehicle 3 includes a moving system 31 and a lifting system 32 .

[0041] The traveling system 31 is used to drive the transport trolley 3 to move along the trolley track 12 and enable it to have a certain climbing ability, so that when the heights of the two ends of the working beam 1 are different, the transport trolley 3 can still carry the counterweight 4 to move.

[0042] The lifting system 32 includes a push rod or platform driven by a hydraulic cylinder to be raised and lowered on the top of the transport vehicle 3. The lifting system 32 is used to lift the counterweight 4 on the load platform 11 from the bottom, so that the transport vehicle 3 can transport the counterweight 4 with the assistance of the walking system 31, thereby placing the counterweight 4 to a new position.

[0043] The working principle of the center of gravity adjustment system: By controlling the reciprocating motion of the transport trolley 3 on the top of the working beam 1, the distribution of all counterweights 4 on the working beam 1 is actively and accurately changed, thereby dynamically adjusting the center of gravity of the switch spreader itself. When the switch spreader is connected to the eccentric switch, the center of gravity adjustment system can rearrange the position of the counterweight 4 to move the combined center of gravity of the combination of the working beam 1 and the counterweight 4 to offset the eccentric torque of the switch, thereby ensuring that the total center of gravity of the working beam 1, counterweight 4 and switch is exactly below the fixed lifting point of the crane, thereby achieving horizontal balance of the working beam 1.

[0044] In order to prevent the central hook hanger 2 from interfering with the movement of the transport trolley 3 and the counterweight 4, the lever arm 21 connecting the central hook hanger 2 and the working beam 1 is designed to bypass the trolley track 12 and the load platform 11 to connect the central hook hanger 2 and the two sides of the working beam 1.

[0045] Furthermore, in order to realize the automated management (addition, reduction, storage) of the counterweight 4 and the maintenance of the transport vehicle 3, this solution designs a ground support system that matches the turnout spreader. The ground support system is integrated into the dedicated rail vehicle for transporting the spreader.

[0046] refer to Figure 3 The ground support system includes: a positioning fixture 5, a warehouse beam 6 and a transport vehicle 7.

[0047] The positioning fixture 5 is used to firmly fix and position the working beam 1 on the rail car to ensure its absolute stability when the counterweight is adjusted.

[0048] The warehouse beam 6 has another set of load platforms 11 and trolley tracks 12 that are completely consistent with the load platform 11 and trolley tracks 12 on the top of the working beam 1. The warehouse beam 6 is placed parallel to the working beam 1 on the positioning fixture 5, and the corresponding track heights and spacing are completely consistent. Its main function is to store counterweights 4 and park the transport trolley 3.

[0049] The transport vehicle 7 is a transport vehicle that can move back and forth laterally between the ends of the working beam 1 and the warehouse beam 6. Its platform is also provided with a sub-vehicle track 12, and can be seamlessly connected with the sub-vehicle track 12 of the working beam 1 and the warehouse beam 6.

[0050] refer to Figure 4 The coordinated working mechanism of the center of gravity adjustment system and the ground support system: the transport trolley 3 carrying the counterweight 4 travels from the end of the track of the working beam 1 (or warehouse beam 6) to the transport mother trolley 7, and the transport mother trolley 7 then moves horizontally to the end of the warehouse beam 6 (or working beam 1), and the trolley then travels from the transport mother trolley 7 to the target beam. This design realizes the automatic transfer of the trolley and the counterweight 4 between the working beam 1 and the warehouse beam 6.

[0051] Furthermore, in order to ensure that after the working beam 1 is hoisted onto the rail car, the working beam 1 can be aligned with the transport mother car 7 on the positioning fixture 5, so that the transport sub-carriage 3 can move along the essentially seamless sub-carriage track 12, the positioning fixture 5 is designed with an active alignment function, which aims to ensure that the working beam 1 hoisted back to the rail car can be aligned with the mother car with high precision, providing a seamless track transfer path for the transport sub-carriage 3.

[0052] refer to Figure 5 The positioning fixture 5 includes: a roller table 51, a positioning push rod 52, and a thrust mechanism 53.

[0053] The roller table 51 is fixedly installed on the rail car and includes several special-shaped rollers 54 with concave centers. The concave surface of the special-shaped rollers 54 is designed to support the bottom surface of the working beam 1, and the two ends of the special-shaped rollers 54 are designed as tapered expansion structures, which play a passive guiding role when the working beam 1 is placed, so that the working beam 1 automatically moves toward the center of the rollers, thereby achieving horizontal alignment of the center line of the working beam 1 and the center line of the roller table 51.

[0054] The positioning push rod 52 is usually a linear actuator such as a cylinder. The positioning push rod 52 is installed at one end of the roller table 51 and is used to apply thrust to the working beam 1 to move the working beam 1 longitudinally along the roller table 51.

[0055] The thrust mechanism 53 is usually a hydraulic buffer or a precision stop block. The thrust mechanism 53 is installed at the other end of the roller platform 51. When the positioning push rod 52 pushes the working beam 1 so that its end is in close contact with the thrust mechanism 53, the working beam 1 reaches the preset longitudinal precise positioning point, and the sub-trolley track 12 at its end is now precisely aligned with the track of the transport mother vehicle 7.

[0056] Furthermore, in order to make full use of the limited transportation area of ​​the rail car, the storage beam is designed as a multi-layer three-dimensional structure from top to bottom. The structure of each layer of storage beam is completely consistent with the load platform 11 and the sub-vehicle track 12 at the top of the working beam 1. This design realizes the three-dimensional and high-density storage of the counterweight 4.

[0057] To cooperate with the multi-layer storage beams, the transport mother vehicle 7 is an intelligent transport device with two-dimensional movement capability, which can transfer the counterweight 4 and the transport sub-vehicle 3 between the working beam 1 and any layer of storage beams.

[0058] refer to Figure 6 The transport vehicle 7 includes a transport platform 71 , a lift 72 , and a transverse machine 73 .

[0059] The upper surface of the transport platform 71 is provided with a sub-vehicle track 12 which can be seamlessly connected with the working beam 1 and the storage beam.

[0060] The lift 72 is typically a hydraulic lift 72 (such as a scissor lift and a gantry lift), which is used to drive the transport platform 71 to move up and down in the vertical direction so that it can accurately reach and align with storage beam levels at different heights.

[0061] The transverse moving machine 73 is usually an electric slide (such as a synchronous belt slide and a screw slide), which is used to drive the entire elevator 72 and the transport platform 71 to perform horizontal reciprocating movement between the working beam 1 and the multi-layer storage beam.

[0062] The collaborative working mechanism of the transport mother vehicle 7 and the transport sub-vehicle 3: when the counterweight 4 needs to be transferred, the transverse moving machine 73 first moves the transport mother vehicle 7 to the end of the working beam 1 (or storage beam), and then the elevator 72 adjusts the transport platform 71 to the target height and aligns it with the track. The transport sub-vehicle 3 can then carry the counterweight 4 and shuttle freely between the working beam 1, the mother vehicle, and the storage beam, realizing efficient, flexible, and three-dimensional material allocation.

[0063] In general, the coordinated working method of the turnout spreader, center of gravity adjustment system and ground support system includes the following steps:

[0064] Step 1, preparation stage: before the lifting operation, the working beam 1, the warehouse beam 6, the transport vehicle 3 and the transport vehicle 7 are all located on the transport rail vehicle.

[0065] Step 2: Pre-configure the counterweights 4: Based on the model, weight and known eccentricity data of the turnout to be hoisted (which can be calculated in advance or marked on the turnout), the staff instructs the sub-trolley and the transport mother vehicle 7 to work together through the control system to pick up the required number of counterweights 4 from the warehouse beam 6 and transfer them to the working beam 1. In the initial state, these counterweights 4 will be evenly distributed to ensure that the center of gravity of the working beam 1 itself is at the geometric center.

[0066] Step 3: Hoisting and dynamic balancing: Connect the working beam 1 to the turnout. The system automatically calculates or receives instructions from the operator based on the eccentric torque of the turnout, and drives the sub-vehicle to move one or more counterweights 4 on the working beam 1 for precise position redistribution, ultimately causing the combined center of gravity of the working beam 1 and the counterweight 4 to shift, and the resulting balancing torque roughly offsets the overturning torque of the turnout.

[0067] Step 4: Hoisting operation: After the center of gravity of the working beam 1 is adjusted, it is lifted. At this time, the working beam 1 will remain basically horizontal. After the turnout is hoisted into place, the transport vehicle 3 will restore the counterweight 4 on the beam to its initial uniform distribution state, and then the staff will separate the working beam 1 from the turnout.

[0068] Step 5. Reset the counterweight 4: If there is no need to lift an eccentric load later (for example, lifting an ordinary rail), the working beam 1 can be lifted back to the positioning fixture 5 on the rail car. The roller table 51 of the positioning fixture 5 first completes the lateral self-centering of the working beam 1, and then the positioning push rod 52 is started to push the working beam 1 longitudinally until it contacts the thrust mechanism 53, thereby achieving precise alignment of the working beam 1 and the transport mother vehicle 7. Then, through the coordinated work of the transport trolley 3 and the transport mother vehicle 7, all the counterweights 4 and the transport trolley 3 are moved back to the warehouse beam 6 to reduce the weight of the working beam 1.

[0069] The advantages of this solution are:

[0070] The active control mode of "adjusting its own center of gravity to offset eccentricity" replaces the traditional passive mode of "adjusting the lifting point to adapt to the center of gravity", which improves the flexibility and adaptability of the system. The integrated transporter and transport mother vehicle 7 realize fully automatic and intelligent center of gravity adjustment, reducing manual intervention and improving work efficiency and accuracy.

[0071] The center of gravity adjustment system is attached to the top of the working beam 1 without changing the main load-bearing structure of the working beam 1, thereby ensuring the structural strength and safety of the turnout spreader to the greatest extent.

[0072] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the embodiments of the present invention.

Claims

1. A hoisting system, characterized in that: include: Working beam, used to bear the load of the turnout; a central hook hanger, arranged at the geometric center of the top of the working beam, for connecting the hook of the crane; a plurality of side hangers, provided on both sides of the working beam, for connecting flexible lifting belts to suspend the turnout; A center of gravity adjustment system is integrated on the top of the working beam, and the center of gravity adjustment system includes: Several counterweights; A load platform is provided along the length direction of the working beam and is used to carry the counterweight; A sub-car track is provided on the top of the working beam and is located below the load platform; a transport trolley capable of moving on the trolley track and configured to transport the counterweight to change the position distribution of the counterweight on the load platform, thereby adjusting the center of gravity of the working beam; as well as, A warehouse beam, the top of which is provided with a load platform and a trolley track having the same structure as the top of the working beam, for storing the counterweight and parking the transport trolley; a transport vehicle, which is capable of moving between the working beam and the end of the warehouse beam and is provided with a sub-vehicle track that can be docked with the sub-vehicle tracks of the working beam and the warehouse beam, and is used to transfer the transport vehicle and the counterweight between the working beam and the warehouse beam; A positioning jig, used to fix and accurately position the working beam to ensure that the sub-trolley track of the working beam is aligned with the sub-trolley track of the transport vehicle; in, The positioning fixture includes: a roller table for carrying and laterally restraining the working beam; A positioning push rod is installed at one end of the roller table and is used to push the working beam in the longitudinal direction; A thrust mechanism is installed at the other end of the roller table and is used to provide a thrust force for the end of the working beam to constrain the longitudinal position of the working beam.

2. The hoisting system according to claim 1, characterized in that: The transport vehicle comprises: A traveling system, used for driving the transport vehicle to move along the vehicle track; A lifting system is used to lift the counterweight from the load platform or place it onto the load platform.

3. The hoisting system according to claim 1, characterized in that: The load platform is composed of two parallel track-type vertical walls arranged along the length direction of the working beam, and the counterweight is designed to be able to ride on the load platform.

4. The hoisting system according to claim 1, characterized in that: The central hook hanger is connected to the working beam through force arms on both sides, and the force arms bypass the sub-trolley track and the load platform to connect the two sides of the working beam.

5. The hoisting system according to claim 1, characterized in that: The number of the warehouse beams is greater than one and is arranged side by side from top to bottom, and the transport mother vehicle comprises: A transport platform, the top of which is provided with a sub-vehicle track that can be docked with the sub-vehicle tracks of the working beam and the warehouse beam; An elevator is used to drive the transport platform to move vertically up and down to align with warehouse beam levels at different heights; A transverse moving machine is used to drive the elevator and the transport platform to move horizontally between the working beam and the warehouse beam.

6. A turnout hoisting method using the hoisting system according to any one of claims 1 to 5, characterized in that: The steps include: Connecting the working beam to the turnout to be hoisted; driving the transport vehicle to move one or more of the counterweights on the load platform of the working beam to redistribute their positions; By redistributing the position of the counterweight, the combined center of gravity of the combination of the working beam and the counterweight is moved to offset the eccentric moment of the turnout, so that the total center of gravity of the working beam, the counterweight and the turnout is located directly below the central hook hanger, achieving horizontal balance during lifting.

7. The turnout hoisting method according to claim 6, characterized in that: The method comprises the steps of pre-configuring counterweights: before the working beam is connected to the switch to be hoisted, using the transport mother vehicle and the transport sub-vehicle to work together to transfer a predetermined number of the counterweights from the warehouse beam to the working beam.

8. The turnout hoisting method according to claim 7, characterized in that: It also includes a step of resetting the counterweight: after the lifting operation is completed, the working beam is lifted to the positioning jig, and the positioning jig accurately positions the working beam in the horizontal and vertical directions so that the sub-trolley track of the working beam is aligned with the track of the transport mother vehicle, and the transport sub-trolley and the transport mother vehicle are used to work together to transfer the counterweight on the working beam back to the warehouse beam.

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