Limiting stopper of electric capstan of elevator

Abstract

The utility model relates to a limiter for an electric capstan of an elevator, an adjusting rope is wound on a limit adjusting mechanism, a hook is arranged at the tail end of the adjusting rope, and the other end of the limit adjusting mechanism is connected with the tail end of a noose; the limiting adjusting mechanism comprises a U-shaped connecting body; a winding shaft is arranged on the opposite side faces of the U-shaped connecting body, one-way bearings are arranged on the two sides of the winding shaft, and ratchet wheels are arranged on the outer rings of the one-way bearings. Rotating shafts are rotationally arranged on the outer side faces of the U-shaped connecting body, a handle is arranged between the rotating shafts, a connecting rod is arranged between the opposite side faces of the handle, and the connecting rod is provided with a pawl meshed with the ratchet wheel. The electric winch has the advantages that the structure is simple, the linear distance between the rope and the noose can be changed by pulling the handle to move through the cooperation of the ratchet wheel and the pawl, and the electric winch can be matched with any existing electric winch of an elevator.

Description

Technical Field

[0001] The present application belongs to the technical field of electric winches, and in particular, relates to a limiter for an electric winch of a hoist. Background Art

[0002] Chinese utility model patent No. 202321348398.9 discloses a limiter for an electric winch of a hoist, including a frame, a winch shaft, a driven shaft, a driving gear, a driven gear, a far point mark, a near point mark and a current mark. The frame is provided with a first and a second mounting hole for the winch shaft and the driven shaft to be inserted for rotational cooperation. The driven gear is coaxially fixed with the driven shaft, and the driving gear is coaxially fixed with the winch shaft and meshes with the driven gear to drive the driven shaft to rotate. Through the structural design of the adjustable number of teeth of the driving gear, the user does not have to disassemble the entire driving gear, and can directly change the number of teeth to achieve a change in the transmission gear ratio. This greatly facilitates the user's needs to adjust the current mark movement ratio when encountering different working conditions. This makes it unnecessary to make the axial distance of the limiter very long, thereby reducing the size of the equipment. Although this structure does not require the entire active gear to be disassembled, the number of teeth can be directly changed to achieve a change in the transmission gear ratio, but it takes a long time to adjust the number of teeth of the active gear one by one, and the design of the entire structure also uses structures such as micro switches to achieve precise adjustment, but it also increases product costs, so a new technology is proposed. Summary of the invention

[0003] The technical problem to be solved by the present invention is: to solve the shortcomings of the prior art that it still takes a lot of time to adjust and change the number of teeth and the product manufacturing cost is high, so as to provide a limiter for the electric winch of the hoist.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A limiter for an electric winch of a hoist, comprising a rope wound on the electric winch of the hoist, and a limit adjustment mechanism, wherein an adjustment rope is wound on the limit adjustment mechanism, a hook is connected to the end of the adjustment rope, and the other end of the limit adjustment mechanism is connected to the end of the rope;

[0006] The limit adjustment mechanism comprises a U-shaped connector, the U-shaped opening end of the U-shaped connector faces downward, and the end of the noose is fixed to the top of the U-shaped connector; the opposite sides of the U-shaped connector are provided with mounting holes, and the mounting holes are provided with bearing seats, and a winding shaft is installed between the bearing seats, and one-way bearings are sleeved and fixed on both sides of the winding shaft, and a ratchet is fixed on the outer ring of the one-way bearing;

[0007] The outer side of the U-shaped connecting body is provided with a rotating shaft, the rotating shaft coincides with the axis center line of the winding shaft, a handle is provided between the rotating shafts, a connecting rod is provided between the opposite sides of the handles, and a pawl cooperating with the ratchet is provided on the connecting rod; one end of the rope is fixed on the winding shaft and partially wrapped around the winding shaft.

[0008] Furthermore, the handle is in a U-shaped structure, a non-slip rubber sleeve is provided at the closed end thereof, and the gap between the closed end and the connecting rod is large enough for a human hand to reach in for holding.

[0009] Furthermore, a reinforcement rod is provided between the bottom ends of the U-shaped connector to increase the connection stability.

[0010] Furthermore, the rope is located on a side of the reinforcement rod away from the handle, thereby reducing interference with the handle during braking.

[0011] Furthermore, the diameter of the ratchet is at least twice the diameter of the shaft, or even more, and the distance between the two ratchets is used to accommodate the rope.

[0012] The beneficial effects of the present invention are:

[0013] 1. The utility model product does not change the structure of the existing electric winch brake, transmission and other parts, and only needs to be installed at the other end of the noose, which means that the utility model product can be adapted to any existing electric winch of the hoist, and the cost is low, no electrical components are required, and it is a pure mechanical structure, which is also convenient for maintenance;

[0014] 2. Its structure is simple. Through the cooperation of the ratchet pawl and the handle being moved, the straight-line distance between the rope and the noose can be changed. That is to say, when the noose is longer or shorter, the length needs to be adjusted to adapt to the distance required to lift the object. The adjustment function of this structure is simpler and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of a three-dimensional structure from another viewing angle of an embodiment of the present application;

[0018] Figure 3 is a schematic diagram of the structure of an embodiment of the present application when viewed from above;

[0019] The reference numerals in the figure are:

[0020] 1. Noose, 2. Limit adjustment mechanism, 3. Rope, 4. U-shaped connector, 5. Bearing seat, 6. Shaft, 7. One-way bearing, 8. Ratchet, 9. Rotating shaft, 10. Handle, 11. Connecting rod, 12. Pawl, 13. Reinforcement rod, 15. Hook. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0024] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] Example

[0026] This embodiment provides a limiter for an electric winch of a hoist, comprising a noose 1 wound on the electric winch of the hoist, and a limit adjustment mechanism 2, an adjustment rope 3 is wound on the limit adjustment mechanism 2, a hook 15 is connected to the end of the adjustment rope 3, and the other end of the limit adjustment mechanism 2 is connected to the end of the noose 1;

[0027] The limit adjustment mechanism 2 includes a U-shaped connector 4, the U-shaped opening end of the U-shaped connector 4 faces downward, and the end of the noose 1 is fixed to the top of the U-shaped connector 4; the opposite sides of the U-shaped connector 4 are provided with mounting holes, and the mounting holes are provided with bearing seats 5, and a winding shaft 6 is installed between the bearing seats 5. Under the drive of external force, the winding shaft 6 stably rotates in the U-shaped connector 4, and a one-way bearing 7 is sleeved and fixed on both sides of the winding shaft 6, and a ratchet 8 is fixed on the outer ring of the one-way bearing 7, and the one-way bearing 7 limits the ratchet 8 to rotate only toward the end away from the hook 15, and cannot rotate back;

[0028] The outer side surface of the U-shaped connector 4 is provided with a rotating shaft 9, and the rotating shaft 9 coincides with the axis center line of the winding shaft 6. A handle 10 is fixed between the rotating shafts 9, and the handle 10 is installed at the middle end of the U-shaped connector 4, and the length of the handle 10 is less than the length of the U-shaped connector 4. A connecting rod 11 is fixed between the opposite sides of the handle 10, and the connecting rod 11 is provided with a pawl 12 that cooperates with the ratchet 8 to push the handle 10 to move back and forth on the U-shaped connector 4; one end of the rope 3 is fixed on the winding shaft 6 and partially wound on the winding shaft 6, and a reinforcement rod 13 is provided between the bottom ends of the U-shaped connector 4 to increase the connection stability, and the rope 3 is located on the side of the reinforcement rod 13 away from the handle 10 to reduce the hindrance to the handle 10 when braking.

[0029] In order to adjust the straight-line distance between the rope 3 and the noose 1, the diameter of the ratchet 8 is at least twice the diameter of the shaft 6, or even more. The distance between the two ratchets 8 is used to accommodate the rope 3, and there is sufficient space for the rope 3 to be wound.

[0030] As an embodiment of the utility model, in addition to the above structure, the handle 10 is U-shaped, and its closed end is provided with a non-slip rubber sleeve or the outer surface is sprayed with a non-slip rubber layer, and the gap between the closed end and the connecting rod is large enough to allow a hand to reach in for gripping.

[0031] In specific implementation:

[0032] It is necessary to adjust the length between the rope and the noose to adapt to the distance of the object to be lifted and to achieve precise control of the stroke. Here, only the workers at the lower end need to cooperate to lift the object. If the prior art does not have a wireless controller, it requires the cooperation of workers at the upper and lower positions, and the setting of structures such as wireless controllers will lead to higher overall costs. The second utility model product only needs to bend the handle to drive the ratchet to rotate and then wrap the rope. When the hook is exactly at the object that needs to be lifted / suspended, you can stop bending. At this time, the ratchet no longer rotates around the axis due to the limitation of the pawl, so the object can be lifted.

[0033] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A stopper for an electric winch of a hoist, comprising a rope wound around the electric winch of the hoist, characterized in that: It also includes a limit adjustment mechanism, the limit adjustment mechanism is wound with an adjustment rope, the end of the adjustment rope is provided with a hook, and the other end of the limit adjustment mechanism is connected to the end of the noose; the limit adjustment mechanism includes a U-shaped connector, and the end of the noose is fixed to the top of the U-shaped connector; The U-shaped connector has mounting holes on opposite sides thereof, bearing seats are provided in the mounting holes, a winding shaft is provided between the bearing seats, one-way bearings are provided on the winding shaft and on both sides thereof, and a ratchet is provided on the outer ring of the one-way bearing; The outer side of the U-shaped connecting body is provided with a rotating shaft, the rotating shaft coincides with the axis center line of the winding shaft, a handle is provided between the rotating shafts, a connecting rod is provided between the opposite sides of the handles, a pawl engaged with the ratchet is provided on the connecting rod, and one end of the rope is fixed on the winding shaft and partially wound around the winding shaft.

2. The limiter of the electric winch of the hoist according to claim 1 is characterized in that: The handle is in a U-shaped structure, and a non-slip rubber sleeve is provided at the closed end thereof.

3. A limiter for an electric winch of a hoist according to any one of claims 1 to 2, characterized in that: A reinforcement rod is arranged between the bottom ends of the U-shaped connector.

4. The limiter of the electric winch of the hoist according to claim 3 is characterized in that: The rope is located at a side of the reinforcement rod away from the handle.

5. The limiter of the electric winch of a hoist according to claim 1, characterized in that: The ratchet diameter is at least twice the diameter of the shaft.

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