An anti-overturning automatic bracket for a drag chain

Abstract

A drag chain anti-overturning automatic bracket comprises a base (2) and a bracket (4), wherein the base (2) is mounted on one side of a running track of a drag chain (1), and is characterized in that: the bracket (4) is mounted on the base (2) and can move perpendicularly to the direction of movement of the drag chain under the control of a horizontal motion actuator (3) so as to enter or leave the lower part of the drag chain; a vertical motion actuator (5) is mounted in the bracket (4), the vertical motion actuator (5) is connected to a roller frame (6), and a group of conical rollers (7) capable of generating a thrust toward the center are mounted on the upper part of the roller frame (6); the vertical motion actuator (5) drives the bracket (6) to move up and down, and the bracket drives the conical rollers to move up and down so as to support the drag chain (1) upward. The present invention has a simple structure, is economical and reliable, and has a high degree of automation.

Description

Technical Field

[0001] The invention relates to a water jet technology, in particular to a water jet drag chain support technology, specifically to an automatic anti-overturning bracket for a drag chain. Background Art

[0002] Currently, with the development of waterjet products and market applications, more and more modular waterjet equipment with long travels (8-30m) is being put into use. This also means that the drag chains used to house cables, sand pipes, air pipes, high-pressure pipes (over 8 meters) and other pipelines and to provide traction and protection are becoming longer and longer. The load-bearing capacity within the drag chain will also increase. When the drag chain is not in motion or is moving at medium or low speeds, the gravity force generated by its own weight and the internal pipes can cause the drag chain to sag. In addition, the stainless steel high-pressure pipes used to transport ultra-high-pressure water in the drag chain have a bend radius exceeding 1 meter. This means that the drag chain that houses the high-pressure pipes has a large radius, which also increases the weight of the drag chain and increases the possibility of sagging.

[0003] Drag chains used in large waterjet equipment can significantly tilt during operation for the following reasons: ① The high-pressure hoses used in large machine tools are typically more than 1.5 times the length of the machine tool's travel. These extra-long, thick-walled, small-diameter hoses inherently possess significant rigidity. However, due to transportation constraints, these hoses, exceeding 8 meters in length, are often transported in coils. This high-strength steel pipe can retain residual multi-directional internal stresses even after being straightened out for use. ② The high-pressure hose length must be longer than the drag chain to be practical, and this excess hose length can cause lateral force imbalance within the drag chain during operation. ③ Currently available high-pressure hose lengths are typically less than 7 meters. When used longer than 7 meters, connectors are often used to extend the hose to meet engineering requirements. However, the connectors used to deliver high-pressure water are significantly larger than the outer diameter of the hose, which can cause deformation and tilt within the drag chain.

[0004] In real-world applications, drag chains used for complex loads involving multiple lines and tubes often employ large, heavy-duty drag chains or flexible cable conveyors with self-propelled mechanisms. However, such applications are difficult to adopt in waterjet equipment due to their high cost. Therefore, a new, low-cost drag chain bracket mechanism is needed to address these issues. Summary of the Invention

[0005] The purpose of the present invention is to design an automatic anti-overturning bracket for a drag chain that can prevent the overlong drag chain from overturning during operation, in order to solve the problem that the drag chain of existing water jet cutting equipment is prone to deformation and overturning when the length exceeds 7 meters.

[0006] One of the technical solutions of the present invention is:

[0007] A drag chain anti-overturning automatic bracket, which includes a base 2 and a bracket 4, the base 2 is installed on one side of the running track of the drag chain 1, and is characterized in that: the bracket 4 is installed on the base 2 and can move perpendicular to the direction of movement of the drag chain under the control of a horizontal motion actuator 3 so as to enter or leave the lower part of the drag chain; a vertical motion actuator 5 is installed in the bracket 4, the vertical motion actuator 5 is connected to a roller frame 6, and a group of conical rollers 7 that can generate a central thrust are installed on the upper part of the roller frame 6; the vertical motion actuator 5 drives the bracket 6 to move up and down, and the bracket drives the roller to move up and down so as to support the drag chain 1 upward.

[0008] The horizontal motion actuator 3 and the vertical motion actuator 5 have the same structure, which are linear guide rail motion supporting structures driven by cylinders, or linear guide rail motion supporting structures driven by hydraulic cylinders and lead screw nuts.

[0009] The number of the conical supporting wheels 7 is an even number of four or more, and the supporting wheels are conical in structure, with the small conical heads of the supporting wheels on both sides pointing to the center of the supporting chain.

[0010] The second technical solution of the present invention is:

[0011] A drag chain anti-overturning device is characterized in that it includes at least one anti-overturning automatic bracket 8 and at least one fixed support 9. The anti-overturning automatic bracket 8 is installed on a base 2 on one side of the drag chain 1 and can move perpendicular to the drag chain so as to support the drag chain in time. A conical support wheel 7 that can automatically center is installed on the upper part of the anti-overturning automatic bracket 8.

[0012] There are two automatic anti-overturning brackets 8 and two fixed supports 9.

[0013] Beneficial effects of the present invention:

[0014] The present invention controls the composite movement of the vertical and horizontal motion actuators to the working position through a position sensing signal triggering system, thereby supporting the drag chain and effectively preventing the drag chain from sagging and tilting, greatly reducing the cost of existing overall fixed support or special drag chains, and also improving the service life of the drag chain and the stability of the equipment.

[0015] The invention has the advantages of simple structure, economy, reliability and high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the mobile bracket of the present invention.

[0017] Figure 2 It is a schematic diagram of the state when the movable bracket of the present invention moves to the bottom of the drag chain and rises to the highest point.

[0018] Figure 3 It is a schematic diagram of the working principle of the present invention. Figure 3 a is a schematic diagram of the original state; Figure 3 b is a schematic diagram of the working state of the first bracket; Figure 3 c is a schematic diagram of the first and second brackets being in working state; Figure 3 d is a schematic diagram of the working state when the first bracket is separated from the drag chain; Figure 3 e is a schematic diagram of the first and second brackets being detached from the support chain and the fixed bracket supporting state. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] like Figure 1-2 shown.

[0021] A drag chain anti-overturning automatic bracket, which includes a base 2 and a bracket 4. The base 2 is installed on one side of the running track of the drag chain 1. The bracket 4 is installed on the base 2 and can move perpendicular to the direction of movement of the drag chain under the control of the horizontal motion actuator 3 to enter or leave the lower part of the drag chain; a vertical motion actuator 5 is installed in the bracket 4, and the vertical motion actuator 5 is connected to a roller frame 6. The upper part of the roller frame 6 is equipped with a group of conical rollers 7 that can generate a thrust toward the center; the vertical motion actuator 5 drives the bracket 6 to move up and down, and the bracket drives the conical rollers to move up and down to support the drag chain 1 upward, such as Figure 1 As shown. The horizontal motion actuator 3 and the vertical motion actuator 5 have the same structure, which are linear guide motion auxiliary structures driven by cylinders or linear guide motion auxiliary structures driven by hydraulic cylinders and screw nuts. The number of the conical supporting wheels 7 is an even number of four or more, and the supporting wheels are conical in structure, with the small cone heads of the supporting wheels on both sides pointing to the center of the supporting chain, as shown. Figure 2 shown.

[0022] During operation, the drag chain follows the crossbeam's movement. Before entering the support range of the bracket, the drag chain triggers the corresponding position sensor. Upon receiving the sensor signal, the system controls the horizontal actuator to move horizontally toward the machine tool to the working position. Five seconds after receiving the position sensor signal, the system simultaneously controls the vertical actuator to begin moving upward to the working position. After the support mechanism reaches the working position, the drag chain enters the support track of the roller frame, providing support for the drag chain.

[0023] The drag chain follows the crossbeam. If the corresponding position sensor is triggered before the forward or backward movement exceeds the support range of the bracket, the automatic bracket 8 will automatically withdraw from the support. Upon receiving the sensing signal, the system controls the vertical motion actuator to begin moving vertically downward to the initial position. Five seconds after receiving the position sensing signal, the horizontal motion actuator moves horizontally to the initial position. Through the combined motion, the automatic bracket 8 returns to its initial position and automatically withdraws from supporting the drag chain.

[0024] The conical supporting wheel 7 adopts an inverted V-shaped mechanism and has a rolling guide function. When there is a position deviation between the drag chain and the supporting wheel or the weight or force distribution of the pipeline in the drag chain is uneven, the drag chain can automatically correct the running trajectory of the drag chain through the centripetal thrust generated by the rolling of the two wheels of the conical supporting wheel, and self-adjust to the center position to prevent tilting.

[0025] The working principle and system of the present invention are described in detail below in conjunction with its specific use.

[0026] like Figure 3 shown.

[0027] The crossbeam 10 and the drag chain 1 are outside the bracket support area. The left automatic bracket 8 and the right automatic bracket 8 are in the initial position. Figure 3 As shown in a.

[0028] The crossbeam 10 drives the drag chain 1 to move to the left automatic bracket 8 support area, triggering the position signal a. The system controls the vertical and parallel actuators of the left automatic bracket 8 to move to the working position. The crossbeam 10 drives the drag chain 1 to continue to move forward, and the left automatic bracket 8 is supported in place. Figure 3 b. The left automatic bracket 8 is in the working position, and the right automatic bracket 8 is in the initial position.

[0029] The crossbeam 10 drives the drag chain 1 to continue moving toward the support area of the right automatic bracket 8, triggering the position signal b. The system controls the vertical and parallel actuators of the right automatic bracket 8 to move to the working position. The crossbeam drives the drag chain to continue moving forward, and the left and right automatic brackets 8 are supported in place. Because the drag chain has a downward force, the position of the right automatic bracket 8 is slightly higher than the left automatic bracket 8. The left and right automatic brackets 8 are both in the working position. Figure 3 As shown in c.

[0030] The crossbeam 10 drives the drag chain 1 to continue forward and leave the support area of the left automatic bracket 8, triggering the position signal. The system controls the vertical actuator of the left automatic bracket 8 to descend and the parallel actuator to retract to the initial position. The right automatic bracket 8 is still in the working position. The drag chain enters the support area of the left fixed support frame 9. The left automatic bracket 8 is in the initial position, and the right automatic bracket 8 is in the working position. Figure 3 As shown in d.

[0031] The above is the working status in the forward direction, and the same applies to the backward direction.

[0032] The crossbeam 10 drives the drag chain 1 forward and out of the support area of the right automatic bracket 8, triggering the position signal. The system controls the vertical actuator of the right automatic bracket 8 to descend vertically and the parallel actuator to move to the initial position. The drag chain is supported by the left fixed support frame 9 and the right fixed support frame 9. The left automatic bracket 8 and the right automatic bracket 8 are in the initial position. Figure 3 As shown in e.

[0033] The parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.

Claims

1. A drag chain anti-overturning device equipped with an automatic anti-overturning bracket for the drag chain, characterized by: It includes at least one drag chain anti-overturning automatic bracket (8) and at least one fixed support (9), and also includes a crossbeam (10) and a position sensor. The drag chain anti-overturning automatic bracket (8) includes a base (2) and a bracket (4). The base (2) is installed on one side of the running track of the drag chain (1). The bracket (4) is installed on the base (2) and can move perpendicular to the movement direction of the drag chain under the control of the horizontal direction movement actuator (3) so as to enter or leave the lower part of the drag chain; a vertical direction movement actuator (5) is installed in the bracket (4), and the vertical direction movement actuator (5) is connected to the roller frame (6). ), a group of conical rollers (7) that can generate thrust toward the center are installed on the upper part of the roller frame (6); the vertical motion actuator (5) drives the roller frame (6) to move up and down, and the roller frame (6) drives the conical rollers to move up and down so as to support the chain (1) upward; the drag chain follows the movement of the crossbeam, and touches the corresponding position sensor before moving forward or backward into the support range of the bracket. After receiving the sensing signal, the system controls the horizontal motion actuator to move horizontally toward the machine tool to the working position; five seconds after receiving the position sensing signal, the system synchronously controls the vertical motion actuator to start moving upward to the working position After the drag chain anti-overturning automatic bracket (8) moves to the working position, the drag chain enters the support track of the support roller frame, thereby supporting the drag chain; the drag chain follows the movement of the crossbeam, and before moving forward or backward beyond the support range of the bracket, it touches the corresponding position sensor, and the drag chain anti-overturning automatic bracket (8) will automatically exit the support. After the system receives the sensing signal, it controls the vertical direction movement actuator to start moving downward in the vertical direction to the initial position; five seconds after the horizontal direction movement actuator receives the position sensing signal, it moves horizontally to the initial position; the drag chain anti-overturning automatic bracket (8) returns to the initial position through the composite movement. The drag chain automatically withdraws from its initial position and supports the drag chain; the conical supporting wheel adopts an inverted V-shaped mechanism with a rolling guide function, so that when there is a position deviation between the drag chain and the supporting wheel or the weight or force distribution of the pipeline in the drag chain is uneven, the drag chain can automatically correct the running trajectory of the drag chain through the centripetal thrust generated by the rolling of the two wheels of the conical supporting wheel, and adjust itself to the center position to prevent it from tilting; the drag chain anti-overturning automatic bracket (8) is installed on the base (2) on one side of the drag chain (1) and can move perpendicular to the drag chain to support the drag chain in time. The upper part of the drag chain anti-overturning automatic bracket (8) is equipped with a supporting wheel (7) that can automatically center.

2. The drag chain anti-overturning device equipped with the drag chain anti-overturning automatic bracket according to claim 1 is characterized in that: The horizontal direction motion actuator (3) and the vertical direction motion actuator (5) have the same structure, and are cylinder-driven linear guide motion supporting structures, or hydraulic cylinders or screw nut-driven linear guide motion supporting structures.

3. The drag chain anti-overturning device equipped with the drag chain anti-overturning automatic bracket according to claim 1 is characterized in that: The number of the supporting wheels (7) is an even number of four or more, and the supporting wheels are of a conical structure, with the small conical heads of the supporting wheels on both sides pointing to the center of the supporting chain.

4. The drag chain anti-overturning device equipped with the drag chain anti-overturning automatic bracket according to claim 1 is characterized in that: The number of the drag chain anti-overturning automatic bracket (8) and the fixed support (9) is two.

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