A winch drum and a winch

Abstract

This invention provides a winch drum and a winch. The winch drum includes an outer drum and a winding rope, and also includes an inner drum. The outer and inner drums are concentrically arranged on a rotating power shaft. The inner drum is located inside the outer drum. One end of the winding rope is fixed to the inner drum by a fixing mechanism, and the other end is wound around the inner drum at least three times before being wound outwards. After being wound around the outer drum several times according to the working stroke, it is connected to a weight. By incorporating the portion of the drum used to install the winding rope into the drum used for winding, the volume of the drum and the overall size of the winch are reduced, making it suitable for more working scenarios.

Description

Technical Field

[0001] This invention belongs to the field of winch technology, specifically relating to a winch drum and a winch. Background Technology

[0002] A winch is a device that uses a drum to wind steel wire rope or chain to lift or pull heavy objects. It can achieve vertical lifting, horizontal movement, or tilting traction of heavy objects, and is widely used in material handling and installation projects in construction, water conservancy, mining, docks, forestry, and various factories.

[0003] The drum is the core component of the entire winch. It is the carrier of the wire rope and, as the terminal of power transmission, converts the rotational motion of the motor into a linear traction force on the wire rope.

[0004] When the hook or load is lowered to its lowest position, a certain number of turns of wire rope must be retained on the drum. The purpose of this is to use friction to reduce the tension on the rope end fixing device and prevent the wire rope from being pulled directly off the drum.

[0005] The "Safety Regulations for Construction Hoists" (GB10055) stipulates that when the cage or heavy object stops at its lowest position, the wire rope remaining on the drum should not be less than 3 turns. This is the safety baseline for the vast majority of conventional winches (such as those used for construction sites and general material hoisting).

[0006] The "Safety Regulations for Construction Winches" (GB13329) and the "Technical Specifications for Safety of Construction Lifting and Hoisting Engineering" clearly stipulate that for larger construction winches and hoisting operations, the number of safety turns of the wire rope should not be less than 5 turns.

[0007] As can be seen from the above, the drum must have a certain non-working width reserved for winding the wire rope. The non-working width results in a larger drum volume, which in turn increases the overall size of the winch, making installation more difficult and unsuitable for some scenarios with relatively limited space.

[0008] Therefore, there is an urgent need to design a more compact winch drum to adapt to more application scenarios. Summary of the Invention

[0009] To address the above technical problems, this invention provides a winch drum and winch that are compact in size, stable in operation, and easy to maintain.

[0010] The technical solution of the present invention is: a winch drum, comprising an outer drum and a winding rope, and further comprising an inner drum, wherein the outer drum and the inner drum are concentrically arranged on a rotating power shaft, and the inner drum is disposed inside the outer drum. One end of the winding rope is fixed to the inner drum by a fixing mechanism, and the other end is wound around the inner drum at least 3 times before being wound outwards and around the outer drum several times according to the working stroke before being connected to the weight.

[0011] Preferably, the inner winding drum is provided with an inner winding groove, and the outer winding drum is provided with an outer winding groove, wherein the outlet direction of the inner winding groove and the inlet direction of the outer winding groove are on the same straight line.

[0012] Preferably, the fixing structure includes several clamping blocks and several bolts. The inner side of the clamping block is provided with a pressure groove that matches the diameter of the winding rope. The clamping block is also provided with a fixing hole. The inner drum is provided with several threaded holes that match the bolts. After the bolts pass through the fixing holes, the engagement of the bolts and the threaded holes presses the winding rope onto the inner drum.

[0013] Preferably, the clamping blocks are evenly distributed along the circumference of the inner roll.

[0014] Preferably, a sub-shaft is sleeved on the rotating power shaft, and the inner drum is disposed on the sub-shaft.

[0015] Preferably, the bolt is divided into a connecting section and an anti-loosening section. The diameter of the anti-loosening section is smaller than that of the connecting section. The thread on the connecting section matches the threaded hole on the inner cylinder. The thread on the anti-loosening section is opposite to the first thread. An anti-loosening nut is provided on the anti-loosening section.

[0016] Preferably, the method further includes a winding rope loosening alarm component, which includes a housing, a spring, a crimping rope, a ball, and an alarm. One end of the crimping rope is located between the pressing block and the inner drum, and the other end is connected to the ball. The housing is located on the inner drum, the ball is located inside the housing, the mounting ring is located inside the housing, a spring is provided between the ball and the mounting ring, and an alarm is provided on the upper wall of the housing.

[0017] Preferably, the alarm is equipped with a wireless transceiver module to enable information exchange with the control room.

[0018] Preferably, the diameter of the inner roll is one-third to one-half the diameter of the outer roll.

[0019] A winch is also provided, including a drum, said drum being any of the drums provided above.

[0020] The beneficial effects of this invention are: by incorporating the drum for installing the winding rope into the drum for winding operations, the volume of the drum is reduced, and the overall volume of the winch is reduced, so as to adapt to more working scenarios. To address the issue of inconvenient maintenance after the installation is built-in, bolt anti-loosening components and winding rope loosening alarm components are added, which greatly improves the stability and safety of the operation, without changing the existing drum structure, thus having good economic benefits. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a cross-sectional view of the present invention. Figure 3 This is a schematic diagram of the bolt structure in Embodiment 2 of the present invention. Figure 4 This is a schematic diagram of the structure of the winding rope loosening alarm component in Embodiment 3 of the present invention. Figure 5 This is a schematic diagram of the structure of the alarm component for loose winding rope under alarm conditions.

[0022] In the diagram, 1 is the outer drum, 2 is the winding rope, 3 is the inner drum, 4 is the rotating power shaft, 41 is the sub-shaft, 5 is the fixing mechanism, 51 is the clamping block, 52 is the bolt, 521 is the connecting section, 522 is the anti-loosening section, 6 is the anti-loosening nut, 7 is the winding rope loosening alarm assembly, 71 is the housing, 72 is the spring, 73 is the crimped rope, 74 is the ball bearing, 75 is the mounting ring, and 76 is the alarm. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "vertical," "horizontal," "inner," "outer," "front," and "back," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1

[0025] Figure 1 and Figure 2 The middle part is a type of winch drum, including an outer drum 1 and a winding rope 2, and also includes an inner drum 3. The outer drum 1 and the inner drum are concentrically arranged on a rotating power shaft 4, and the inner drum 3 is located inside the outer drum 1. See Figure 2One end of the winding rope 2 is fixed to the inner drum 3 by the fixing mechanism 5, and the other end is wound around the inner drum 3 at least 3 times and then wound around the outer drum several times according to the working stroke before being connected to the weight.

[0026] The inner drum 3 is provided with an inner winding groove, and the outer drum 1 is provided with an outer winding groove. The outlet direction of the inner winding groove and the inlet direction of the outer winding groove are on the same straight line.

[0027] The fixing mechanism 5 includes several clamping blocks 51 and several bolts 52. The inner side of each clamping block 51 has a groove matching the diameter of the winding rope 2. Each clamping block 51 also has a fixing hole. The inner drum 3 has several threaded holes matching the bolts 52. The bolts 52 pass through the fixing holes, and the engagement with the threaded holes presses the winding rope 2 onto the inner drum 3. The clamping blocks 51 are evenly distributed along the circumference of the inner drum 3, and the end faces of the clamping blocks 51 on the same side are all on the same plane and parallel to the radial plane of the rotating power shaft 4. This ensures the balance of the center of gravity during rotation and prevents deflection.

[0028] A sub-shaft 41 is sleeved on the rotating power shaft 4, and an inner drum 3 is set on the sub-shaft 41. The sub-shaft 41 can move and then be fixed on the rotating power shaft 4. The winding rope 2 can be wound around the outside first, and then pushed into the inside of the outer drum 1 for fixing, which facilitates the assembly of the winding rope 2.

[0029] The diameter of the inner drum 3 is one-third to one-half the diameter of the outer drum 1. This facilitates assembly and ensures sufficient space for rope winding.

[0030] By incorporating the drum used to install the winding rope into the drum used for winding, the volume of the drum is reduced, thus reducing the overall size of the winch and making it suitable for more working scenarios. Example 2

[0031] See Figure 3 In this embodiment, the bolt 52 is divided into a connecting section 521 and an anti-loosening section 522. The diameter of the anti-loosening section 522 is smaller than that of the connecting section 522. The thread on the connecting section 522 matches the threaded hole on the inner roll 3. The thread on the anti-loosening section 522 is opposite to the first thread. An anti-loosening nut 6 is provided on the anti-loosening section 522.

[0032] To address the issue of inconvenient maintenance after the installation is built-in, a bolt anti-loosening component is added. The connecting section 521 and the anti-loosening section 522 are designed with reverse threads, and the anti-loosening nut 6 and bolt 52 are interlocked to prevent loosening. Example 3

[0033] See Figure 4This embodiment includes a loose winding rope alarm component 7, which includes a housing 71, a spring 72, a crimping rope 73, a ball 74, a mounting ring 75, and an alarm 76. One end of the crimping rope 73 is located between the clamping block 51 and the inner winding drum 3, and the other end is connected to the ball 74. The housing 71 is located on the inner winding drum 3, the ball 74 is located inside the housing 71, and the mounting ring 75 is located inside the housing 71. A spring 72 is provided between the ball 74 and the mounting ring 75. An alarm 75 is provided at the inner end of the housing 71. The alarm 75 is a contact alarm, which is a conventional structure, and the specific working principle will not be described in detail.

[0034] The alarm 75 is equipped with a wireless transceiver module to communicate with the control room. This is a conventional technology, and the specific working principle will not be elaborated here.

[0035] See Figure 5 To address the issue of inconvenient maintenance after the installation is built-in, a loose winding rope alarm component 7 is added (76). When the drum rotates, it generates centrifugal force. When the bolts loosen, the ball 74 will contact the alarm under the action of centrifugal force and spring force, triggering the alarm and reminding maintenance.

[0036] This invention is not limited to the above embodiments. Based on the technical solutions disclosed in this invention, those skilled in the art can make some substitutions and modifications to some of the technical features without creative effort, and all such substitutions and modifications are within the protection scope of this invention.

Claims

1. A winch drum, comprising an outer drum and a winding rope, characterized in that, It also includes an inner drum, wherein the outer drum and the inner drum are concentrically arranged on the rotating power shaft, and the inner drum is located inside the outer drum. One end of the winding rope is fixed to the inner drum by a fixing mechanism, and the other end is wound around the inner drum at least 3 times before being wound outwards and around the outer drum several times according to the working stroke before being connected to the weight.

2. A winch drum according to claim 1, characterized in that, The inner drum is provided with an inner winding groove, and the outer drum is provided with an outer winding groove. The outlet direction of the inner winding groove and the inlet direction of the outer winding groove are on the same straight line.

3. A winch drum according to claim 1, characterized in that, The fixing structure includes several clamping blocks and several bolts. The inner side of the clamping block is provided with a pressure groove that matches the diameter of the winding rope. The clamping block is also provided with a fixing hole. The inner drum is provided with several threaded holes that match the bolts. After the bolts pass through the fixing holes, the engagement of the bolts and the threaded holes presses the winding rope onto the inner drum.

4. A winch drum according to claim 1, characterized in that, The clamping blocks are evenly distributed along the circumference of the inner roll.

5. A winch drum according to claim 1, characterized in that, A sub-shaft is sleeved on the rotating power shaft, and the inner drum is disposed on the sub-shaft.

6. A winch drum according to claim 3, characterized in that, The bolt is divided into a connecting section and an anti-loosening section. The diameter of the anti-loosening section is smaller than that of the connecting section. The thread on the connecting section matches the threaded hole on the inner cylinder. The thread on the anti-loosening section is opposite to the first thread. An anti-loosening nut is provided on the anti-loosening section.

7. A winch drum according to claim 1, characterized in that, The device also includes a winding rope loosening alarm assembly, which includes a housing, a spring, a crimping rope, a ball, a mounting ring, and an alarm. One end of the crimping rope is located between the clamping block and the inner drum, and the other end is connected to the ball. The housing is located on the inner drum, the ball is located inside the housing, the mounting ring is located inside the housing, a spring is located between the ball and the mounting ring, and an alarm is located on the upper wall of the housing.

8. A winch drum according to claim 1, characterized in that, The alarm is equipped with a wireless transceiver module to enable information exchange with the control room.

9. A winch drum according to claim 1, characterized in that, The diameter of the inner roll is one-third to one-half the diameter of the outer roll.

10. A winch comprising a drum, characterized in that, The reel is the reel provided in any one of claims 1 to 8.

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