Safety interlock mechanism for cage stranding machine
Patent Information
- Application Number
- CN202521450520.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-07-10
AI Technical Summary
然而，在更换完线盘后，工人有时会将摇把落在设备上，导致主机旋转体带着摇把一起旋转，进而容易打坏设备和线盘，对生产造成不利影响
[0015] The beneficial effects of this utility model are that it has a simple structure and is easy to use. Through the sleeve, direct-acting limit switch and crank, it can form a safety interlock with the start and stop of the cage stranding machine. The cage stranding machine can only be started after the crank is inserted into the sleeve. In this way, even if the worker accidentally drops the crank on the equipment (at this time the crank is not inserted into the sleeve), the equipment cannot be started, and the wire reel and equipment will not be damaged, thus playing a safety protection role.
Smart Images
Figure CN224652079U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of cage stranding machines, and specifically relates to a safety interlocking mechanism for cage stranding machines. Background Technology
[0002] A stranding machine is a widely used mechanical device for stranding various types of soft and hard conductor wires. It twists multiple single conductors into a single strand to meet the processing requirements of the wire. Stranding machines can generally be classified according to the stranding method into single stranding machines, double stranding machines, high-speed stranding machines, untwisting machines, cage stranding machines, frame stranding machines, tubular stranding machines, and disc stranding machines. Among them, cage stranding machines generally have a frame structure, and the outside of the rotating main body is usually equipped with a protective cage, which has a protective door for personnel to enter and exit.
[0003] Currently, when replacing a new reel in a cage-type stranding machine, workers typically enter the protective cage, loosen the locking screws with a crank handle, and release the safety lock pin. However, after replacing the reel, workers sometimes drop the crank handle onto the equipment, causing the main rotating body to rotate along with the handle, which can easily damage the equipment and the reel, adversely affecting production.
[0004] Therefore, there is an urgent need for a safety interlocking mechanism for cage stranding machines to solve the above problems. Utility Model Content
[0005] To address the aforementioned deficiencies in existing technologies, this utility model provides a safety interlock mechanism for a cage-type stranding machine, comprising a sleeve, a direct-acting limit switch, and a crank handle. The cage-type stranding machine is equipped with a protective cage, which has a protective door for personnel entry and exit. One end of the sleeve is rotatably connected to the inner wall of the protective door via a pin, and the sleeve has a cavity inside. The direct-acting limit switch is fixed to the inner wall of the protective door and located below the other end of the sleeve. A push rod is provided on the top of the direct-acting limit switch, and the top of the push rod abuts against the bottom of the sleeve. The direct-acting limit switch is connected by a connecting wire. Electrically connected to the control circuit of the cage stranding machine, the state of the internal contacts of the direct-acting limit switch is changed from open to closed by mechanically pressing the push rod, thereby connecting the control circuit of the cage stranding machine. When the push rod loses external force, its internal contacts automatically reset under the action of the spring, changing from closed to open, thereby disconnecting the control circuit of the cage stranding machine. The crank handle includes a crank handle body, one end of which is fixed with a handle, which is inserted into the cavity of the sleeve. The crank handle acts like a wrench and is used to loosen the locking screw when changing wires.
[0006] Optionally, the bottom of the sleeve is provided with a limiting groove, and the top of the push rod of the direct-acting limit switch is inserted into the limiting groove of the sleeve.
[0007] Specifically, the limiting groove of the sleeve can limit the push rod of the direct-acting limit switch to a certain extent, so that the two can make stable contact.
[0008] Optionally, a hook is provided on the crank handle body.
[0009] Optionally, a support base is fixed on the inner wall of the protective door, a counterweight is placed on the support base, and a suspension rope is provided on the top of the counterweight.
[0010] Specifically, the function of the counterweight is: if the weight of the crank handle is insufficient to press the push rod of the direct-acting limit switch, the counterweight can be hung on the hook of the crank handle to appropriately increase the downward force and change the state of the internal contacts of the direct-acting limit switch.
[0011] Optionally, the handle of the crank is adapted to the cavity of the sleeve.
[0012] Optionally, the direct-acting limit switch is model number Delixi LX19-001.
[0013] This utility model also includes other components that enable the safety interlock mechanism of a cage-type stranding machine to function normally, all of which are conventional technical means in the art. Furthermore, any devices or components not specified in this utility model employ conventional technical means in the art, such as direct-acting limit switches.
[0014] The working principle of this utility model is as follows: After replacing the wire reel, the worker needs to insert the handle of the crank into the cavity of the sleeve. Under the gravity of the crank and the sleeve, the push rod of the direct-acting limit switch is pressed down, changing the state of the internal contacts of the direct-acting limit switch from open to closed. At the same time, the control circuit of the cage stranding machine is also closed. After that, the worker leaves the protective cage, and the on-site personnel can start the cage stranding machine. When the wire reel needs to be replaced again, the equipment is stopped first, and then the worker pulls out the crank to perform the wire replacement operation. At this time, the external force on the push rod of the direct-acting limit switch is less than the elastic force of the internal spring, and the internal contacts automatically reset, changing from closed to open. At the same time, the control circuit of the cage stranding machine is also closed, improving the safety of the operation process.
[0015] The beneficial effects of this utility model are that it has a simple structure and is easy to use. Through the sleeve, direct-acting limit switch and crank, it can form a safety interlock with the start and stop of the cage stranding machine. The cage stranding machine can only be started after the crank is inserted into the sleeve. In this way, even if the worker accidentally drops the crank on the equipment (at this time the crank is not inserted into the sleeve), the equipment cannot be started, and the wire reel and equipment will not be damaged, thus playing a safety protection role. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 This is a schematic diagram of the sleeve of this utility model.
[0019] Figure 3 This is a schematic diagram of the crank handle of this utility model.
[0020] Figure 4 This is a schematic diagram of the direct-acting limit switch in the embodiment after the crank handle is pulled out of the sleeve.
[0021] In the diagram: 1. Sleeve, 2. Direct-acting limit switch, 3. Handle, 4. Protective door, 5. Pin, 6. Cylinder cavity, 7. Limiting groove, 8. Push rod, 9. Handle body, 10. Handle, 11. Hook, 12. Counterweight, 13. Support base. Detailed Implementation
[0022] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.
[0023] Example
[0024] like Figure 1-4 As shown, this utility model embodiment provides a safety interlocking mechanism for a cage-type stranding machine, including a sleeve 1, a direct-acting limit switch 2, and a crank 3. The cage-type stranding machine is equipped with a protective cage, and the protective cage is equipped with a protective door 4 for personnel to enter and exit. One end of the sleeve 1 is rotatably connected to the inner wall of the protective door 4 through a pin 5. The sleeve 1 has a cavity 6 inside, and a limiting groove 7 is provided at the bottom of the sleeve 1.
[0025] The direct-acting limit switch 2 is fixed on the inner wall of the protective door 4 and located below the other end of the sleeve 1. A push rod 8 is provided on the top of the direct-acting limit switch 2, and the top end of the push rod 8 is inserted into the limiting groove 7 of the sleeve 1. The limiting groove 7 of the sleeve 1 can play a certain limiting role on the push rod 8 of the direct-acting limit switch 2, so that the two are in stable contact. The model of the direct-acting limit switch 2 is Delixi LX19-001. The direct-acting limit switch 2 is electrically connected to the control circuit of the cage stranding machine through the connecting wire. By mechanically pressing the push rod 8, the state of the internal contacts of the direct-acting limit switch 2 is changed from the open state to the closed state, thereby realizing the connection of the control circuit of the cage stranding machine. When the push rod 8 loses the external force, under the action of the spring, its internal contacts automatically reset, changing from the closed state to the open state, thereby realizing the disconnection of the control circuit of the cage stranding machine.
[0026] The crank handle 3 includes a crank handle body 9, one end of which is fixed with a handle 10. The handle 10 is inserted into the cavity 6 of the sleeve 1, and the handle 10 of the crank handle 3 is adapted to the cavity 6 of the sleeve 1. The crank handle 3 acts like a wrench and is used to loosen the locking screw when changing the wire.
[0027] In addition, a hook 11 is provided on the crank body 9. A support base 13 is fixed on the inner wall of the protective door 4. A counterweight 12 is placed on the support base 13, and a hanging rope is provided on the top of the counterweight 12. The function of the counterweight 12 is: if the weight of the crank 3 is insufficient to press the push rod 8 of the direct-acting limit switch 2, the counterweight 12 can be hung on the hook 11 of the crank 3 to appropriately increase the downward force and change the state of the internal contacts of the direct-acting limit switch 2.
[0028] The working principle of this utility model is as follows: After replacing the wire reel, the worker needs to insert the handle 10 of the crank 3 into the cavity 6 of the sleeve 1. Under the gravity of the crank 3 and the sleeve 1, the push rod 8 of the direct-acting limit switch 2 is pressed down, changing the state of the internal contacts of the direct-acting limit switch 2 from open to closed. At the same time, the control circuit of the cage stranding machine is also closed. After that, the worker leaves the protective cage, and the on-site staff can start the cage stranding machine. When the wire reel needs to be replaced again, the equipment is stopped first, and then the worker pulls out the crank 3 to perform the wire replacement operation. At this time, the external force on the push rod 8 of the direct-acting limit switch 2 is less than the elastic force of the internal spring, and the internal contacts automatically reset, changing from closed to open. At the same time, the control circuit of the cage stranding machine is also closed, improving the safety during operation.
[0029] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A safety interlocking mechanism for a cage-type stranding machine, comprising a sleeve, a direct-acting limit switch, and a crank handle, wherein the cage-type stranding machine is equipped with a protective cage, and the protective cage is equipped with a protective door for personnel to enter and exit, characterized in that: One end of the sleeve is rotatably connected to the inner wall of the protective door via a pin. The sleeve has a cavity inside. A direct-acting limit switch is fixed to the inner wall of the protective door and located below the other end of the sleeve. A push rod is provided on the top of the direct-acting limit switch, and the top of the push rod abuts against the bottom of the sleeve. The handle includes a handle body, one end of which is fixed with a handle, and the handle is inserted into the cavity of the sleeve.
2. The safety interlocking mechanism of the cage stranding machine according to claim 1, characterized in that: The bottom of the sleeve is provided with a limiting groove, and the top of the push rod of the direct-acting limit switch is inserted into the limiting groove of the sleeve.
3. The safety interlocking mechanism of the cage stranding machine according to claim 2, characterized in that: The crank handle has a hook.
4. The safety interlocking mechanism of the cage stranding machine according to claim 3, characterized in that: A support base is fixed on the inner wall of the protective door, a counterweight is placed on the support base, and a suspension rope is provided on the top of the counterweight.
5. The safety interlocking mechanism of the cage stranding machine according to claim 4, characterized in that: The handle of the crank is adapted to the cavity of the sleeve.
6. The safety interlocking mechanism of the cage stranding machine according to claim 5, characterized in that: The model number of the direct-acting limit switch is LX19-001.