A guide rail-free steel wire rope type casting hoist system

Abstract

The application discloses a guide rail-free steel wire rope type casting hoist system and relates to the technical field of casting hoists. The guide rail-free steel wire rope type casting hoist system comprises a main body, a reel arranged on the main body and used for winding a steel wire rope, and a tension mechanism used for applying tension to the steel wire rope. The tension mechanism operates when the load of the steel wire rope is less than a set threshold. The guide rail-free steel wire rope type casting hoist system can apply tension to the steel wire rope when the load of the steel wire rope is small, so that the steel wire rope is tightly wound on the reel and the steel wire rope is prevented from being loosely wound on the reel and leaving a safety hazard. When the load of the steel wire rope exceeds the set threshold, the tension mechanism does not operate, so that the tension mechanism is prevented from causing an additional burden on the hoist system.

Description

Technical Field

[0001] This invention relates to the field of casting winch technology, specifically to a railless wire rope casting winch system. Background Technology

[0002] The railless wire rope casting hoist system essentially transforms the traditional "rigid push-pull on a rigid track" mode into a "flexible cable traction based on spatial anchor points" mode. Through a combination of innovative mechanical structures and intelligent control technology, it solves the core pain points of traditional systems, such as rigid layouts and high costs.

[0003] For example, the patent document with authorization announcement number CN208883367U, authorization announcement date May 21, 2019, entitled "A Variable Speed ​​Winch Lifting Device for an Aluminum Tube Casting Machine", has a roller and a power unit that drives the roller to rotate. The power unit has a low-speed winch motor and a high-speed winch motor. The high-speed winch motor is used to lift the empty pallet, which greatly reduces the time spent lifting the empty pallet and improves the production efficiency of aluminum tube casting.

[0004] In existing technologies, winch systems sometimes wind up wire ropes without a load. During the winding process, the wire rope lacks sufficient and stable tension, which obviously causes the wire rope to become loosely wrapped around the reel, posing a safety hazard. Summary of the Invention

[0005] The purpose of this invention is to provide a railless wire rope casting hoisting system to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A railless wire rope casting hoisting system includes a main body and a reel mounted on the main body for winding the wire rope, and further includes:

[0008] A tensioning mechanism is used to apply tension to the wire rope, and the tensioning mechanism operates when the load on the wire rope is less than a set threshold.

[0009] The aforementioned railless wire rope casting hoisting system has a box body slidably mounted on its main body, and a fixed pulley is rotatably connected inside the box body.

[0010] The aforementioned railless wire rope casting hoisting system includes a tension mechanism comprising a friction block and a movable plate slidably disposed within a housing. The movable plate is provided with a first elastic element for forcing the friction block to abut against the wire rope on a fixed pulley.

[0011] In the aforementioned railless wire rope casting hoisting system, a slider is slidably arranged inside the housing, and a movable pulley is rotatably connected to the slider. The movable pulley is located below the fixed pulley. A second elastic element is provided inside the housing to force the movable pulley to move downward, and a movable plate is arranged on the slider.

[0012] The aforementioned railless wire rope casting hoisting system has two fixed pulleys inside the housing, and the wire rope passes through one fixed pulley, a movable pulley, and another fixed pulley in sequence.

[0013] In the aforementioned railless wire rope casting hoisting system, when the load on the wire rope increases, the tension of the wire rope enables the movable pulley to overcome the elastic force of the second elastic element and rise, thereby driving the movable plate to rise; until the load on the wire rope exceeds a set threshold, the movable plate drives the friction block to rise to release the resistance to the wire rope on the fixed pulley.

[0014] The aforementioned railless wire rope casting hoisting system has a connecting column on the slider, a lifting frame slidingly disposed inside the connecting column, the lifting frame and the movable plate being fixedly connected, and a second elastic element disposed between the lifting frame and the housing.

[0015] The aforementioned railless wire rope casting hoisting system includes a locking mechanism inside the housing. When the load on the wire rope exceeds the full load threshold, the locking mechanism locks the wire rope.

[0016] In the aforementioned railless wire rope casting hoisting system, the locking mechanism is triggered based on the upward stroke of the movable pulley.

[0017] The aforementioned railless wire rope casting hoisting system includes a locking mechanism comprising a rotating plate rotatably connected to a housing. Locking blocks are constructed on both sides of the rotating plate. A torsion spring is provided inside the housing to force one end of the rotating plate to abut against the outer wall of a fixed pulley. When the wire rope load exceeds the full load threshold, the movable pulley abuts against the other end of the rotating plate to rotate the rotating plate, thereby reducing the horizontal distance between the two locking blocks and locking the wire rope.

[0018] In the above technical solution, the present invention provides a railless wire rope casting hoisting system. By setting a tension mechanism, the wire rope can be tensioned when the load is small, so that the wire rope is tightly wound on the reel, thus avoiding the wire rope from being loosely wound on the reel and leaving safety hazards. When the load on the wire rope exceeds a set threshold, the tension mechanism does not operate, thus avoiding the tension mechanism from causing additional burden on the hoisting system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a movable plate structure provided in another embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of a lifting frame structure provided in another embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of a movable pulley structure provided in another embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of a friction block structure provided in another embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of a rotating plate structure provided in another embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of a locking block structure provided in another embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of another angle of the rotating plate provided in another embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of a resistance plate structure provided in another embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Main body; 2. Steel wire rope; 3. Reel; 4. Box body; 5. Fixed pulley; 6. Friction block; 7. Movable plate; 8. First elastic element; 9. Sliding block; 10. Moving pulley; 11. Second elastic element; 12. Connecting column; 13. Lifting frame; 14. Lower connecting rod; 15. Upper connecting rod; 16. Rotating plate; 17. Locking block; 18. Stop block; 19. Resistance plate; 20. Third elastic element. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Reference Figure 1-9This invention provides a railless wire rope casting hoisting system, including a main body 1 and a reel 3 mounted on the main body 1 for winding a wire rope 2. It also includes a tension mechanism for applying tension to the wire rope 2. The tension mechanism operates when the load on the wire rope 2 is less than a set threshold.

[0033] Specifically, in the aluminum casting process, both raw materials and shaped aluminum bars need to be hoisted by a winch system. The railless wire rope type 2 winch system can solve the core pain points of the traditional winch system, such as rigid layout and high cost. All of the above are existing technologies and will not be elaborated here. The innovation of this invention lies in the fact that during the winding of the wire rope 2 via the reel 3, if the load on the wire rope 2 is less than a set threshold (i.e., the weight of the object suspended at the end of the wire rope 2 away from the reel 3, such as a set threshold of 100N or 200N), the wire rope 2 may become loosely wound. When the wire rope 2 is heavily loaded, the loosely wound wire rope 2 poses a significant safety hazard. Therefore, a tension mechanism is provided. The tension mechanism can be an active pressure friction structure. When the load on the wire rope 2 is less than the set threshold, the tension mechanism can apply resistance to the wire rope 2 to create tension within the wire rope 2, thereby tightly winding the wire rope 2 onto the reel 3. When the load on the wire rope 2 is greater than the set threshold, the resistance (tension) applied to the wire rope 2 by the tension mechanism can be removed, thus minimizing the additional burden that the tension mechanism places on the hoisting system.

[0034] In another embodiment of the present invention, a box 4 is slidably disposed on the main body 1, and a fixed pulley 5 is rotatably connected inside the box 4. Specifically, the box 4 is hollow inside and has through holes at both ends, through which the wire rope 2 can pass and be wound around the fixed pulley 5. In this way, a tension mechanism can be disposed inside the box 4 to apply tension to the wire rope 2 at appropriate times. During the winding of the wire rope 2 by the reel 3, the winding position of the wire rope 2 will move along the axial direction of the reel 3. For this purpose, an axial drive mechanism can be provided on the main body 1 to drive the box 4 to slide on the main body 1 to adapt to the winding of the wire rope 2. This is prior art and is not shown in the figure, so it will not be described in detail here.

[0035] Preferably, the tension mechanism includes a friction block 6 and a movable plate 7 slidably disposed within the housing 4. The movable plate 7 is provided with a first elastic element 8 for forcing the friction block 6 to abut against the wire rope 2 on the fixed pulley 5. Specifically, the first elastic element 8 can be a spring or elastic telescopic rod structure from the prior art; the movable plate 7 is located above the fixed pulley 5, and the friction block 6 is located between the movable plate 7 and the fixed pulley 5. The side of the friction block 6 closest to the fixed pulley 5 is constructed as an arc-shaped groove structure adapted to the wire rope 2 (a resistance structure can be set in the arc-shaped groove to improve friction). Under the action of the first elastic element 8, the friction block 6 can cooperate with the fixed pulley 5 to apply pressure to the wire rope 2, thereby providing resistance (tension) for the wire rope 2 during winding; a linear drive mechanism can be set in the housing 4 to drive the movable plate 7 to move. Obviously, when the movable plate 7 moves away from the fixed pulley 5, the elastic force applied by the first elastic element 8 to the friction block 6 decreases, the resistance applied by the friction block 6 to the wire rope 2 decreases, thereby reducing the tension of the wire rope 2. Thus, the position of the movable plate 7 can be adjusted according to the situation to apply tension to the wire rope 2 accordingly.

[0036] Preferably, a slider 9 is slidably disposed inside the box body 4, and a movable pulley 10 is rotatably connected to the slider 9. The movable pulley 10 is located below the fixed pulley 5. A second elastic element 11 is disposed inside the box body 4 to force the movable pulley 10 to move downward. A movable plate 7 is disposed on the slider 9. Two fixed pulleys 5 are disposed inside the box body 4, and the wire rope 2 passes through one fixed pulley 5, the movable pulley 10, and the other fixed pulley 5 in sequence. Specifically, the second elastic element 11 can be a spring or elastic telescopic rod structure in the prior art; two fixed pulleys 5 are symmetrically disposed inside the box body 4, and the movable pulley 10 is located between and below the two fixed pulleys 5; a vertical groove is constructed inside the box body 4, and the slider 9 is slidably connected in the groove so that the movable pulley 10 can slide vertically inside the box body 4 through the slider 9; for the movable pulley 10, when the tension on the wire rope 2 is small, the elastic force of the second elastic element 11 can force the slider 9 to be at the bottom of the groove, and when the tension on the wire rope 2 is large, the second elastic element 11 can force the slider 9 to be at the bottom of the groove. When the tension is large (i.e., when the hoisting mechanism is winding up a heavy object), the tension on the wire rope 2 can force the movable pulley 10 to overcome the elastic force of the second elastic element 11 and move upward. This allows the movable plate 7 to be mounted on the slider 9 (e.g., fixedly connected), so that the movable plate 7 rises and falls with the slider 9. When the tension on the wire rope 2 reaches a certain threshold due to winding up a heavy object, it can drive the movable pulley 10 to rise to a certain height, allowing the friction block 6 to be suspended below the movable plate 7 via the first elastic element 8, thus separating the friction block 6 from the wire rope 2 (e.g., ...). Figure 5 As shown, at this point, the wire rope 2 has separated from the arc groove on the friction block 6, thereby relieving the tension applied to the wire rope 2.

[0037] With this configuration, when the load on the wire rope 2 increases, the tension of the wire rope 2 allows the movable pulley 10 to overcome the elastic force of the second elastic element 11 and rise, thereby driving the movable plate 7 to rise. Until the load on the wire rope 2 exceeds a set threshold, the movable plate 7 drives the friction block 6 to rise to release the resistance to the wire rope 2 on the fixed pulley 5. The advantage is that, in the above embodiment, the position of the movable plate 7 needs to be individually controlled to adjust the tension mechanism. In this embodiment, the movable plate 7 is positioned on the slider 9, allowing the movable plate 7 to move based on the movement of the slider 9, passively adjusting the tension applied to the wire rope 2. When the load on the wire rope 2 exceeds the set threshold, the tension applied to the wire rope 2 is passively released.

[0038] It should be noted that when there is no tension on the wire rope 2, the gravity of the movable pulley 10 and the slider 9, as well as the elastic force of the second elastic element 11, can force the slider 9 to be at the bottom of the groove, so as to determine the position of the movable plate 7 and apply tension (resistance) to the wire rope 2 through the friction block 6. The analysis in each embodiment of the present invention is based on the premise that the reel 3 rotates at a constant speed to make the wire rope 2 be wound at a constant speed. That is, the motion conditions in each embodiment of the present invention may be different in reality, but it does not affect the judgment of the trend (such as when the load on the wire rope 2 is greater than a certain threshold, the movable pulley 10 rises, the movable plate 7 rises, and the resistance of the friction block 6 to the wire rope 2 decreases or disappears).

[0039] As an alternative to fixing the aforementioned movable plate 7 and slider 9, preferably, a connecting post 12 is constructed on the slider 9, and a lifting frame 13 is slidably disposed within the connecting post 12. The lifting frame 13 and the movable plate 7 are fixedly connected, and a second elastic element 11 is disposed between the lifting frame 13 and the box 4. Specifically, a lower connecting rod 14 is constructed below the lifting frame 13, and the lower connecting rod 14 is slidably disposed within the connecting post 12. A telescopic mechanism is provided between the two, and the telescopic mechanism can be a lead screw structure in the prior art to control the relative position of the lower connecting rod 14 and the connecting post 12; an upper connecting rod 15 is constructed above the lifting frame 13, and a lifting groove is constructed within the box 4. The upper connecting rod 15 is slidably disposed within the lifting groove. In this embodiment, the second elastic element 11 is a spring structure and is disposed within the lifting groove to force the lifting frame 13 and slider 9 to move downward through the second elastic element 11; in this embodiment, when the telescopic mechanism controls the lower connecting rod 14 to retract into the connecting post 12 (e.g. Figure 5 (As shown in the relative positions of the connecting column 12 and the movable frame), the slider 9 and the movable plate 7 can operate according to the above-described motion process. When the lower connecting rod 14 extends out of the connecting column 12 under the control of the telescopic mechanism, the telescopic mechanism can force the upper connecting rod 15 to retract into the lifting groove, force the slider 9 to contact the bottom of the groove, and force the friction block 6 and the wire rope 2 to separate. This allows the structure inside the box 4 to operate normally without being affected by the resistance of the friction block 6, and minimizes the impact of the movable pulley 10 on the winch of the wire rope 2.

[0040] In another embodiment of the present invention, a locking mechanism is provided inside the housing 4. When the load on the wire rope 2 exceeds the full load threshold, the locking mechanism locks the wire rope 2. The locking mechanism is triggered based on the upward stroke of the movable pulley 10. Specifically, the locking mechanism can be an electric locking structure from the prior art, which can lock the relative position of the housing 4 and the wire rope 2 when needed, so as to avoid the hoisting system from overloading and causing greater safety hazards (mainly during the process of the hoisting system winding the wire rope 2 to lift objects). In the above embodiment, the tension on the wire rope 2 will be reflected in the sliding stroke of the movable pulley 10. That is, when the load on the wire rope 2 increases, the movable pulley 10 will move upward inside the housing 4. Therefore, the locking mechanism is set to be triggered based on the upward stroke of the movable pulley 10, so that when the load (tension) on the wire rope 2 exceeds the full load threshold, the locking mechanism is triggered to lock the relative position of the housing 4 and the wire rope 2.

[0041] As an alternative to the aforementioned electric locking structure, preferably, the locking mechanism includes a rotating plate 16 rotatably connected within the housing 4. Locking blocks 17 are constructed on both sides of the rotating plate 16. A torsion spring is provided within the housing 4 to force one end of the rotating plate 16 to abut against the outer wall of the fixed pulley 5. When the load on the wire rope 2 exceeds the full load threshold, the movable pulley 10 abuts against the other end of the rotating plate 16, causing the rotating plate 16 to rotate. This reduces the horizontal spacing between the two locking blocks 17, thereby locking the wire rope 2. Specifically, the rotating plate 16 is rotatably connected to the inner wall of the housing 4. The rotating plate 16 and the wire rope 2 are staggered, preventing interference during operation. The locking blocks 17 on both sides of the rotating plate 16 are rotationally symmetrical about the center of the rotating plate 16, and both locking blocks 17 extend to the position of the wire rope 2. Under the action of the torsion spring, the end of the rotating plate 16 away from the movable pulley 10 abuts against the outer wall of a fixed pulley 5 (e.g., Figure 7 As shown), at this time, the rotation of the fixed pulley 5 driven by the wire rope 2 will not have a significant impact on the angle of the rotating plate 16. Furthermore, the distance between the two locking blocks 17 is greater than the diameter of the wire rope 2, minimizing the impact of the locking blocks 17 on the operation of the wire rope 2. Simultaneously, the two locking blocks 17 can also clean foreign objects from the wire rope 2. When the load on the wire rope 2 exceeds the full load threshold, the movable pulley 10 rises to a certain height. At this time, the outer wall of the movable pulley 10 can abut against the end of the rotating plate 16, forcing the rotating plate 16 to overcome the spring force of the torsion spring and rotate. Thus, the two locking blocks 17 clamp and fix the wire rope 2, limiting the relative position of the wire rope 2 and the box 4 (e.g., ...). Figure 8(As shown). The advantage is that, in this embodiment, the load on the wire rope 2 can be reflected in the lifting stroke of the movable pulley 10. When the load on the wire rope 2 exceeds the full load threshold, the movable pulley 10 also rises to a certain height, thereby forcing the rotating plate 16 to rotate against the elastic force of the torsion spring, thereby locking the wire rope 2 and minimizing the overload operation of the hoisting system.

[0042] In another embodiment of the present invention, a stop block 18 is constructed inside the box body 4, and a resistance plate 19 and a third elastic element 20 are provided inside the box body 4. The third elastic element 20 is used to force the resistance plate 19 to abut against the stop block 18. After the load on the wire rope 2 exceeds the set threshold, the movable plate 7 abuts against the bottom wall of the resistance plate 19. Subsequently, the load on the wire rope 2 continues to increase, and the movable pulley 10 no longer rises until the load on the wire rope 2 exceeds the full load threshold. Then, the slider 9 and other structures can overcome the elastic force of the second elastic element 11 and the third elastic element 20 and rise to trigger the locking mechanism to operate. Specifically, in the above embodiment, the load of the wire rope 2 can be reflected in the lifting stroke of the movable pulley 10. There is a large difference between the set threshold and the full load threshold (the full load threshold is not limited and can be set according to the situation). Therefore, the movable pulley 10 needs to rise a large stroke to trigger the locking mechanism to operate. However, in the hoisting system, the small sliding stroke of the movable pulley 10 based on the elastic element will not have a significant impact on the operation of the overall device, and may even play a buffering role. However, if the sliding stroke of the movable pulley 10 is long, it will affect the stability of the overall hoisting system. For this reason, the resistance plate 19 and the third elastic element 20 are provided. In this embodiment, the resistance plate 19 is located above the movable plate 7. Under the action of the third elastic member 20, the resistance plate 19 abuts against the stop block 18. As the load on the wire rope 2 increases, the movable pulley 10 drives the movable plate 7 to move upward so that the movable plate 7 abuts against the bottom of the resistance plate 19. At this time, the load on the wire rope 2 continues to increase but cannot overcome the elastic force of the third elastic member 20. Until the load on the wire rope 2 exceeds the full load threshold, the movable pulley 10 and the movable plate 7 can overcome the elastic force of the second elastic member 11 and the third elastic member 20, so that the movable plate 7 continues to move upward and triggers the locking mechanism. In the above embodiments, if the upward stroke of the movable pulley 10 corresponding to the load on the wire rope 2 from zero to the set threshold is one unit, and the upward stroke of the movable pulley 10 corresponding to the load on the wire rope 2 from the design threshold to the full load threshold is three units, then in this embodiment, the upward stroke of the movable pulley 10 corresponding to the load on the wire rope 2 from zero to the set threshold is one unit, and the upward stroke of the movable pulley 10 corresponding to the load on the wire rope 2 from the design threshold to the full load threshold is reduced to one unit or even less. The advantage of this setting is that, in this embodiment, the state switching of the wire rope 2 reaching the set threshold and the full load threshold is retained, the sliding stroke of the movable pulley 10 is reduced, so that the wire rope 2 can have a certain elastic buffer stroke, while also taking into account the stability of the overall hoisting system.

[0043] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A railless wire rope casting hoisting system, comprising a main body and a reel mounted on the main body for winding a wire rope, characterized in that, Also includes: A tensioning mechanism is used to apply tension to the wire rope, and the tensioning mechanism operates when the load on the wire rope is less than a set threshold.

2. The railless wire rope casting hoisting system according to claim 1, characterized in that, A box is slidably mounted on the main body, and a fixed pulley is rotatably connected inside the box.

3. The railless wire rope casting hoisting system according to claim 2, characterized in that, The tension mechanism includes a friction block and a movable plate slidably disposed within the housing. The movable plate is provided with a first elastic element for forcing the friction block to abut against the wire rope on the fixed pulley.

4. The railless wire rope casting hoisting system according to claim 3, characterized in that, A slider is slidably disposed inside the box, and a movable pulley is rotatably connected to the slider. The movable pulley is located below the fixed pulley. A second elastic element is disposed inside the box to force the movable pulley to move downward. A movable plate is disposed on the slider.

5. A railless wire rope casting hoisting system according to claim 4, characterized in that, The box is equipped with two fixed pulleys, and the steel wire rope passes through one fixed pulley, one movable pulley and another fixed pulley in sequence.

6. The railless wire rope casting hoisting system according to claim 4, characterized in that, When the load on the wire rope increases, the tension of the wire rope enables the movable pulley to overcome the elastic force of the second elastic element and rise, thereby driving the movable plate to rise; until the load on the wire rope is greater than the set threshold, the movable plate drives the friction block to rise to release the resistance to the wire rope on the fixed pulley.

7. A railless wire rope casting hoisting system according to claim 4, characterized in that, The slider has a connecting column, and a lifting frame is slidably arranged inside the connecting column. The lifting frame and the movable plate are fixedly connected, and the second elastic element is arranged between the lifting frame and the box body.

8. A railless wire rope casting hoisting system according to claim 7, characterized in that, The box is equipped with a locking mechanism that locks the wire rope when the load on the wire rope exceeds the full load threshold.

9. A railless wire rope casting hoisting system according to claim 8, characterized in that, The locking mechanism is triggered based on the upward stroke of the movable pulley.

10. A railless wire rope casting hoisting system according to claim 9, characterized in that, The locking mechanism includes a rotating plate rotatably connected to the housing. Locking blocks are constructed on both sides of the rotating plate. A torsion spring is provided in the housing to force one end of the rotating plate to abut against the outer wall of the fixed pulley. When the load on the wire rope is greater than the full load threshold, the movable pulley abuts against the other end of the rotating plate to make the rotating plate rotate, thereby reducing the horizontal distance between the two locking blocks and locking the wire rope.

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