Winch for stage

Abstract

The stage winch relates to the field of winch application and comprises a mounting frame, a winding drum is arranged in the mounting frame, the winding drum is connected with a first driving device through a belt wheel assembly, the interior of the winding drum is hollow, a steel wire rope is wound around the exterior of the winding drum, and multiple sets of strip-shaped grooves are formed in the outer wall of the winding drum; and a threaded rod is rotationally connected to the center position in the winding drum, the two ends of the threaded rod are fixedly connected with the mounting frame, a reset mechanism is movably mounted in the winding drum and comprises a reset rod, and the reset rod penetrates through the interior of the strip-shaped groove. The reset mechanism rotates outside the threaded rod to synchronously move, so that the winding and unwinding amount of the steel wire rope is matched with the movement of the reset mechanism, the steel wire rope is horizontally extruded by one set of reset rods every time the steel wire rope is wound by one section, the steel wire rope can be pushed to reset even if a gap occurs in winding, and the situation that the steel wire rope is wound too loosely is reduced.

Description

Technical Field

[0001] This invention relates to the field of winch applications, specifically a stage winch. Background Technology

[0002] A winch (also called a hoist) is a small, lightweight lifting device that uses a steel wire rope / chain wound around a drum to vertically lift heavy objects and horizontally / incline them. Its core features are simple structure, high load-bearing capacity, and convenient operation. It is a core traction / lifting tool in the industrial and construction fields.

[0003] Winches are also widely used on stage, including power units, transmission systems, drum assemblies, braking systems, as well as frames and auxiliary parts. When the power source starts, the speed reducer reduces the speed and increases the torque, driving the drum to rotate. When the drum rotates, it winds / releases the wire rope. The direction of the force is changed through the pulley block. By using the traction of the wire rope, the vertical lifting, horizontal dragging, or tilting of the heavy object can be achieved. The braking system can lock the drum at any time, allowing the heavy object to be suspended stably and the operation to stop.

[0004] In practical applications, winches are divided into single-layer winding drums suitable for conventional scenarios and multi-layer winding drums suitable for long-distance scenarios. Multi-layer winding winches experience greater mutual wear between the wire ropes and are therefore mostly used in special situations. For single-layer winding drums, although a reciprocating guide mechanism assists in winding the wire rope, after the wire rope is wound into a loop, adjacent wire ropes are prone to being too tight or too loose. Loosely wound wire ropes will leave gaps, resulting in incomplete winding. Overly tight wire ropes will cause adjacent wire ropes to rub against each other, increasing wear. Furthermore, uneven winding and unwinding of the wire rope can easily cause equipment vibration. Because of the inherent dynamic nature of wire rope winding, most winch drums have grooves (recesses) on their surface. This allows the wire rope to be wound along these grooves during operation. While this ensures even winding and unwinding and maintains gaps between adjacent wire ropes, reducing wear, grooved drums also have drawbacks. If the equipment is disturbed by external factors, such as abnormal vibration, the wire rope in the winding position may detach from the designated groove, causing subsequent winding to fail to match the groove and requiring a shutdown and rewinding. Furthermore, because there are gaps between adjacent grooves, grooved drums are generally larger than those without grooves. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a stage winch to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a stage winch, comprising a mounting frame, wherein a drum is disposed inside the mounting frame, the drum is connected to a first drive device via a pulley assembly, the drum is hollow inside, a steel wire rope is wound around the outside of the drum, and multiple sets of strip grooves are formed on the outer wall of the drum, a threaded rod is rotatably connected to the center position inside the drum, the two ends of the threaded rod are fixedly connected to the mounting frame, a reset mechanism is movably installed inside the drum, the reset mechanism comprises a base, the base and the threaded rod are threadedly connected, a guide rod is disposed on the top of the base, a first spring is sleeved on the outside of the guide rod, and a reset rod is movably installed on the outside of the guide rod, the reset rod passing through the inside of the strip groove.

[0007] By adopting the above technical solution, a reset mechanism is set inside the drum to horizontally push and reset the wire rope that is being wound, reducing the occurrence of excessively loose wire rope winding. The drum in this application is a drum without a groove, which is less prone to errors during winding and unwinding. The reset mechanism mainly consists of multiple sets of movable reset rods that are driven by springs. A threaded rod is rotatably connected inside the drum, and the threaded rod is fixedly connected to the equipment mounting bracket. The reset mechanism inside the drum is threadedly connected to the threaded rod, and the multiple sets of reset rods of the reset mechanism penetrate and fit into the strip grooves on the surface of the drum. Therefore, when the drum rotates to wind the wire rope, it will drive the reset mechanism to rotate. The reset mechanism rotates synchronously with the outside of the threaded rod, so that the amount of wire rope winding and unwinding matches the movement of the reset mechanism. Thus, each section of wire rope is horizontally squeezed by a set of reset rods, so that even if there are gaps in the wire rope winding, they will be pushed and reset, reducing the occurrence of excessively loose wire rope winding.

[0008] The present invention is further configured such that the top of the base is provided with multiple sets of guide rods, the top of the multiple sets of guide rods is provided with end caps, the outside of the multiple sets of guide rods is sleeved with a first spring, and the multiple sets of guide rods are movably installed with a reset rod, and the multiple sets of reset rods respectively pass through the multiple sets of strip grooves.

[0009] Preferably, by setting multiple sets of reset rods, and each set of reset rods is pushed and reset by an independent first spring, the multiple sets of reset rods can be squeezed individually or pushed together horizontally to reset the same coil of wire rope.

[0010] The present invention is further configured such that limit blocks are provided on the sides of the multiple sets of reset rods, and multiple sets of limit grooves matching the limit blocks are opened on the outside of the base.

[0011] Preferably, by setting a limiting block and a limiting groove, the stability of the reset rod and the base installation can be improved.

[0012] The present invention is further configured such that a first guide surface is provided on the side of the reset rod, and a second guide surface is provided on the top of the reset rod.

[0013] Preferably, by setting a first guide surface and a second guide surface, it is beneficial to compress and wind the wire rope and reduce the wear of the wire rope.

[0014] The present invention is further configured such that a guide post is provided on the side of the mounting bracket, and a bidirectional lead screw is rotatably connected to the side of the mounting bracket. The bidirectional lead screw is connected to a second driving device, and an adjustment mechanism is movably installed on the outside of the guide post. The adjustment mechanism and the bidirectional lead screw are threadedly connected.

[0015] Preferably, a bidirectional screw-driven adjustment mechanism is provided, which enables the adjustment mechanism to automatically control reciprocating movement and guide the wire rope to wind onto the drum.

[0016] The present invention is further configured such that the adjustment mechanism includes a fixed frame, and the fixed frame is provided with two sets of limiting guide wheels. Each set of limiting guide wheels is composed of two sets of rotating and connected guide wheels, and the two sets of limiting guide wheels are vertically distributed.

[0017] Preferably, by setting two sets of vertically distributed limiting guide wheels, the movement of the wire rope up, down, left, and right can be restricted for the drum, but this does not affect the worker's ability to pull the wire rope left and right.

[0018] The invention is further configured such that a square rod is provided on one side of the fixing frame, a sleeve is movably installed on the outside of the square rod, and a second spring is sleeved on both ends of the sleeve on the outside of the square rod. A guide wheel is rotatably connected to the outside of the sleeve, and the guide wheel is matched with the wire rope.

[0019] Preferably, the wire rope is guided by a floating guide wheel, which allows the guide wheel to adapt to the vibration of the wire rope.

[0020] The invention is further configured such that the square rod is located on the middle side of the fixed frame, so that the wire rope guided by the guide wheel can be wound around the outside of the drum in an inclined state.

[0021] Preferably, by setting the guide wheel eccentrically, the wire rope can be wound on the drum at an inclined angle, reducing wear between the wire rope and adjacent wire ropes.

[0022] In summary, the present invention has the following main beneficial effects: This invention utilizes a reset mechanism inside the drum to horizontally push and reset the wire rope during winding, reducing the likelihood of loose winding. The drum in this application is without grooves, minimizing errors during winding and unwinding. The reset mechanism primarily consists of multiple sets of spring-driven reset rods. A threaded rod is rotatably connected inside the drum, and the threaded rod is fixedly connected to the equipment mounting bracket. The reset mechanism inside the drum is threadedly connected to the threaded rod, and the multiple reset rods penetrate and fit into the grooves on the drum surface. As the drum rotates to wind the wire rope, it drives the reset mechanism to rotate. The reset mechanism rotates synchronously with the threaded rod, matching the amount of wire rope winding with the movement of the reset mechanism. Thus, each section of the wire rope is horizontally compressed by a set of reset rods, ensuring that even gaps in the wire rope winding are pushed and reset, reducing the likelihood of loose winding.

[0023] This invention reduces wear caused by the interlacing of wire ropes by setting an adjustment mechanism to wind the wire rope at an inclined angle. Ideally, the wire rope should be tangent to the already wound wire rope on the drum during winding to minimize mutual wear. However, in practical applications, the guide mechanism used to guide the wire rope may deviate slightly, resulting in a winding angle between the wire rope to be wound and the wire rope on the drum. This could be an interlacing angle, causing mutual wear (i.e., overly tight winding) or a separation angle, causing gaps in the winding (i.e., overly loose winding). While overly loose winding reduces wear, it can lead to incomplete winding. In this application, an inclined guide wheel is used to wind the wire rope at an inclined angle, reducing wear. Then, a reset mechanism resets the overly loose wire rope, thus reducing both wear and overly loose winding. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the roll structure of the present invention; Figure 3 This is a schematic diagram showing the distribution of the reel and reset mechanism of the present invention; Figure 4 This is a schematic diagram of the reset mechanism structure of the present invention; Figure 5 This is a diagram illustrating the installation of the reset mechanism of the present invention. Figure 6 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 7 This is a top view of the winch of the present invention; Figure 8 For the present invention Figure 7Enlarged view of point A in the image.

[0025] Explanation of reference numerals in the attached figures: 1. Mounting bracket; 2. Drum; 3. Strip groove; 4. Threaded rod; 5. Reset mechanism; 501. Base; 502. Guide rod; 503. First spring; 504. Reset rod; 505. First guide surface; 506. Second guide surface; 507. Limiting block; 508. Limiting groove; 509. End cap; 6. Pulley assembly; 7. First drive device; 8. Wire rope; 9. Guide column; 10. Adjustment mechanism; 1001. Fixing bracket; 1002. Limiting guide wheel; 1003. Square rod; 1004. Sleeve; 1005. Second spring; 1006. Guide wheel; 11. Bidirectional lead screw; 12. Second drive device. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The embodiments of the present invention will now be described.

[0028] Please see Figures 1-8 A stage winch includes a mounting frame 1, inside which a drum 2 is installed. The drum 2 is connected to a first drive device 7 via a pulley assembly 6. The first drive device 7 includes a drive motor and a reducer, which drives the drum 2 to rotate after speed reduction and torque increase. The drum 2 is hollow inside, and a steel wire rope 8 is wound around its outside. One end of the steel wire rope 8 is fixedly connected to the outer wall of the drum 2, and multiple sets of strip grooves 3 are formed on the outer wall of the drum 2. A threaded rod 4 is rotatably connected to the center position inside the drum 2. Both ends of the drum 2 are fixedly connected to the mounting bracket 1. A reset mechanism 5 is movably installed inside the drum 2. The reset mechanism 5 includes a base 501, which is threadedly connected to a threaded rod 4. When the reset mechanism 5 rotates, it moves along the threaded rod 4. A guide rod 502 is provided on the top of the base 501. A first spring 503 is sleeved on the outside of the guide rod 502. The first spring 503 can push the reset rod 504 to move. The reset rod 504 is movably installed on the outside of the guide rod 502 and passes through the inside of the strip groove 3.

[0029] Please refer to the above embodiments for further details. Figure 4 and Figure 5The top of the base 501 is provided with multiple sets of guide rods 502, and the top of the multiple sets of guide rods 502 is provided with end caps 509. Each set of guide rods 502 is fitted with a first spring 503, and each set of guide rods 502 is movably mounted with a reset rod 504. The multiple sets of reset rods 504 respectively pass through multiple sets of strip grooves 3. By setting multiple sets of reset rods 504, and each set of reset rods 504 is pushed and reset by an independent first spring 503, the multiple sets of reset rods 504 can be squeezed individually, or they can be pushed and reset together horizontally to push the same coil of steel wire rope 8.

[0030] Please refer to the above embodiments for further details. Figure 5 Each of the multiple reset rods 504 has a limit block 507 on its side, and the base 501 has multiple limit grooves 508 that match the limit blocks 507 on its outside. By setting the limit blocks 507 and the limit grooves 508, the stability of the reset rods 504 and the base 501 can be improved.

[0031] Please refer to the above embodiments for further details. Figure 4 The reset rod 504 has a first guide surface 505 on its side and a second guide surface 506 on its top. By setting the first guide surface 505 and the second guide surface 506, it is beneficial to compress and wind the wire rope 8 and reduce the wear of the wire rope 8.

[0032] Please refer to the above embodiments for further details. Figure 1 and Figure 7 The mounting frame 1 has a guide post 9 on its side and a double-acting screw 11 rotatably connected to the side of the mounting frame 1. The double-acting screw 11 is connected to a second drive device 12. An adjustment mechanism 10 is movably installed on the outside of the guide post 9. The adjustment mechanism 10 and the double-acting screw 11 are threadedly connected. By setting the double-acting screw 11 to drive the adjustment mechanism 10, the adjustment mechanism 10 can be automatically controlled to achieve reciprocating movement and guide the wire rope 8 to wind onto the drum 2.

[0033] Please refer to the above embodiments for further details. Figure 6 The adjustment mechanism 10 includes a fixed frame 1001. The fixed frame 1001 has two sets of limiting guide wheels 1002 inside. Each set of limiting guide wheels 1002 consists of two sets of rotating and connected guide wheels. The two sets of limiting guide wheels 1002 are vertically distributed. By setting two sets of vertically distributed limiting guide wheels 1002, the movement of the wire rope 8 up, down, left, and right can be restricted for the drum 2, but it does not affect the worker's ability to pull the wire rope 8 left and right.

[0034] Please refer to the above embodiments for further details. Figure 6A square rod 1003 is provided on one side of the fixed frame 1001. A sleeve 1004 is movably installed on the outside of the square rod 1003. A second spring 1005 is sleeved on both ends of the sleeve 1004 on the outside of the square rod 1003. A guide wheel 1006 is rotatably connected to the outside of the sleeve 1004. The guide wheel 1006 is matched with the wire rope 8. The wire rope 8 is guided by the floating guide wheel 1006, so that the guide wheel 1006 can adapt to the vibration of the wire rope 8.

[0035] Please refer to the above embodiments for further details. Figure 6 and Figure 8 The square rod 1003 is located on the middle side of the fixed frame 1001, so that the wire rope 8 guided by the guide wheel 1006 can be wound on the outside of the drum 2 in an inclined state. By setting the position of the guide wheel 1006 eccentrically, the wire rope 8 can be wound on the drum 2 at an inclined angle, reducing the wear between the wire rope 8 and the adjacent wire rope 8.

[0036] In practical operation, when the wire rope 8 is released for use and needs to be wound up, the first drive device 7 is activated to drive the drum 2 to rotate through the pulley assembly 6. When the drum 2 rotates, it uses multiple sets of strip grooves 3 on its surface to drive the reset mechanism 5 to rotate. The base 501 of the reset mechanism 5 is threadedly connected to the threaded rod 4, and then the reset mechanism 5 moves along the threaded rod 4 and the strip grooves 3. That is, the amount of wire rope 8 wound around the outside of the drum 2 increases while the reset mechanism 5 moves.

[0037] During the winding process of the wire rope 8, the wire rope 8 is guided by the adjusting mechanism 10 to wind at an angle. At the winding contact point between the wire rope 8 and the drum 2, the wire rope 8 is tilted and squeezed, sliding down along the second guide surface 506 of one set of reset rods 504 of the reset mechanism 5, and bending through the first guide surface 505. The strong tension of the wire rope 8 will push the reset rod 504 to move along the guide rod 502, compressing the first spring 503. As the wire rope 8 continues to wind, under the reset action of the first spring 503, the reset rod 504 pushes the wire rope 8 to fit with the adjacent wire rope 8, reducing the occurrence of winding gaps. Moreover, the wire rope 8 is wound by squeezing the reset rod 504 of the reset mechanism 5 at an inclined angle, which does not create an intersecting angle with the wire rope 8 already wound on the drum 2, and is less likely to cause wear to the wire rope 8. The first driving device 7 continuously drives the drum 2 to rotate and wind the wire rope 8. The reset mechanism 5 moves synchronously, using multiple sets of reset rods 504 to horizontally reset the wound wire rope 8.

[0038] At the same time, the second drive device 12 drives the bidirectional lead screw 11 to rotate, thereby driving the adjustment mechanism 10 to move along the guide column 9. The two sets of vertically distributed limit guide wheels 1002 of the adjustment mechanism 10 guide the wire rope 8 until the wire rope 8 is completely wound up. Similarly, the steps are reversed when the wire rope 8 is unwound.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A stage winch comprising a mounting frame (1), characterised in that: The inside of the mounting frame (1) is provided with a winding drum (2), the winding drum (2) is connected with the first driving device (7) through the setting of the pulley assembly (6), the inside of the winding drum (2) is hollow, the outside of the winding drum (2) is wound with the steel wire rope (8), and a plurality of strip-shaped grooves (3) are formed in the outer wall of the winding drum (2), a threaded rod (4) is rotatably connected to the inside of the winding drum (2), the two ends of the threaded rod (4) are fixedly connected with the mounting frame (1), and a reset mechanism (5) is movably arranged in the inside of the winding drum (2), the reset mechanism (5) comprises a base (501), the base (501) is threadedly connected with the threaded rod (4), the top of the base (501) is provided with a guide rod (502), the outside of the guide rod (502) is sleeved with a first spring (503), and the outside of the guide rod (502) is movably provided with a reset rod (504), and the reset rod (504) penetrates the inside of the strip-shaped groove (3).

2. The stage winch according to claim 1, characterized in that: The top of the base (501) is provided with a plurality of guide rods (502), the top of the plurality of guide rods (502) is provided with an end cover (509), the outside of the plurality of guide rods (502) is sleeved with a first spring (503), and the plurality of guide rods (502) are movably provided with a reset rod (504), and the plurality of reset rods (504) correspondingly penetrate the plurality of strip-shaped grooves (3).

3. A stage winch according to claim 2, wherein: The side surface of the plurality of reset rods (504) is provided with a limiting block (507), and the outside of the base (501) is provided with a plurality of limiting grooves (508) matched with the limiting block (507).

4. A stage winch according to claim 3, wherein: The side surface of the reset rod (504) is provided with a first guide surface (505), and the top of the reset rod (504) is provided with a second guide surface (506).

5. The stage winch of claim 1, wherein: The side surface of the mounting frame (1) is provided with a guide column (9), and the side surface of the mounting frame (1) is rotatably connected with a bidirectional screw rod (11), the bidirectional screw rod (11) is connected with a second driving device (12), the outside of the guide column (9) is movably provided with an adjusting mechanism (10), and the adjusting mechanism (10) is threadedly connected with the bidirectional screw rod (11).

6. A stage winch according to claim 5 wherein: The adjusting mechanism (10) comprises a fixed frame (1001), the inside of the fixed frame (1001) is provided with two sets of limiting guide wheels (1002), one set of limiting guide wheels (1002) is composed of two sets of rotatably connected guide wheels, and the two sets of limiting guide wheels (1002) are vertically distributed.

7. A stage winch according to claim 6 wherein: One side of the fixed frame (1001) is provided with a square rod (1003), the outside of the square rod (1003) is movably provided with a sleeve (1004), the outside of the square rod (1003) is sleeved with a second spring (1005) at both ends of the sleeve (1004), the outside of the sleeve (1004) is rotatably connected with a guide wheel (1006), and the guide wheel (1006) is matched with the steel wire rope (8).

8. A stage winch according to claim 7, wherein: The square rod (1003) is arranged on one side of the middle of the fixed frame (1001), so that the steel wire rope (8) guided through the guide wheel (1006) can be wound on the outside of the winding drum (2) in an inclined state.

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