Emergency stop pull cord switch safety catch device

Abstract

The utility model relates to the field of tire production discloses an emergency stop pull rope switch safety lock catch device, it includes fixed base and safety lock, the fixed base includes the first fixed flat plate, fixed backplate and second fixed flat plate that are connected as a whole, the first fixed flat plate and second fixed flat plate are parallel and the upper and lower positions correspond, the end face of first fixed flat plate and second fixed flat plate in the same direction is connected the two end faces of fixed backplate respectively, at least one fixed flat plate is cut in the position of its one side near fixed backplate and forms the cut strip longitudinally, and the base of cut strip bends inwards and becomes the L-shaped lock strip including curved portion and straight strip portion, the utility model discloses through reasonable design realizes pure mechanical locking and manual authorization reset double insurance, avoids the abnormal reset of emergency stop pull rope switch, greatly improves the safety reliability of emergency stop pull rope switch, eliminates the risk hidden danger of personnel injury and equipment damage.

Description

Technical Field

[0001] This utility model relates to the field of tire manufacturing, specifically to a safety locking device for an emergency stop pull rope switch. Background Technology

[0002] Currently, during tire production line transportation, conveyor belt malfunctions and maintenance are frequently required. During maintenance, traditional emergency stop pull-cord switches can accidentally reset due to misoperation, external interference, or poor communication, causing the equipment to suddenly restart and potentially injuring operators and other personnel. If the equipment is started without thorough inspection and preparation, it may lead to more serious malfunctions or accidents, increasing maintenance costs and downtime. Therefore, improving the safety of emergency stop pull-cord switches is a pressing technical problem that needs to be solved. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an emergency stop pull rope switch safety lock device, the technical solution of which is as follows:

[0004] A safety locking device for an emergency stop pull-cord switch, comprising a switch body, a socket, a connecting rod, a connecting rod limiting head, and a pull-cord fixing head. The switch body has an emergency stop reset button. The socket is located on one side of the switch body. One end of the connecting rod is inserted into the socket, and the other end is connected to the connecting rod limiting head. A protective plate is provided on the outside of the socket, including an upper protective plate above the connecting rod limiting head and the connecting rod, and a lower protective plate below the connecting rod limiting head and the connecting rod. One end of the pull-cord fixing head is connected to the connecting rod limiting head, and the other end has a rope-tying hole for securing the pull-cord. The device includes a fixed base and a safety lock. The fixed base includes a first fixed plate, a fixed back plate, and a second fixed plate integrally connected. The first fixed plate and... The second fixed plates are parallel and vertically aligned. The end faces of the first and second fixed plates in the same direction are each connected to one of the two end faces of the fixed back plate. At least one of the two fixed plates has a longitudinal cut on one side near the fixed back plate to form a strip, and the base of the strip is bent inward to form an L-shaped locking strip including a curved part and a straight part. When the emergency stop pull rope switch is in the off state, the straight part of the L-shaped locking strip is inserted into the gap formed between the protective plate, the plug rod, the plug rod limit head and the socket, preventing the plug rod from moving axially. The first and second fixed plates have vertically aligned locking holes on the side away from the L-shaped locking strip. The safety lock can be locked through the locking holes.

[0005] Furthermore, the first fixed plate and the second fixed plate are symmetrically provided with L-shaped locking strips on the same side near the fixed back plate, and the two straight strips formed are inserted from the upper and lower directions of the plug rod respectively.

[0006] Furthermore, the keyhole is circular in shape.

[0007] Furthermore, the safety lock includes a lock body and a lock beam.

[0008] Furthermore, the lock body and lock beam are made of engineering plastics.

[0009] Furthermore, the fixing base is made of high-strength metal.

[0010] Furthermore, the high-strength metal is Q460 steel.

[0011] Compared with the prior art, the present invention has the following main advantages:

[0012] 1. This utility model achieves dual insurance through reasonable design, including pure mechanical locking and manual authorized reset, avoiding abnormal reset of the emergency stop pull rope switch, greatly improving the safety and reliability of the emergency stop pull rope switch, and eliminating the risk of personnel injury and equipment damage.

[0013] 2. Compared with traditional magnetic or electronic latches, this utility model can still be used under extreme conditions such as power failure and electromagnetic interference, making it suitable for special industrial scenarios such as automated conveyor lines and high-risk equipment, and significantly improving the safety of emergency stop systems.

[0014] 3. This utility model has a simple and compact structure, is suitable for mechanical manufacturing, and is conducive to mass production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the fixed base structure of this utility model;

[0017] In the diagram: 1-Switch body, 2-Socket, 3-Plug rod limit head, 4-First fixed plate, 5-Pull rope fixing head, 6-Rope tethering hole, 7-Safety lock, 7.1-Lock body, 7.2-Lock beam, 8-Second fixed plate, 9-Upper protective plate, 10-Lower protective plate, 11-L-shaped locking bar, 11.1-Bent part, 11.2-Straight part, 12-Plug rod, 13-Emergency stop reset button, 14-Fixed back plate, 15-Lock hole. Detailed Implementation

[0018] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. Example 1

[0019] See Figure 1 and Figure 2A safety locking device for an emergency stop pull-cord switch includes a switch body 1, a socket 2, a connecting rod 12, a connecting rod limiting head 3, and a pull-cord fixing head 5. The switch body 1 has an emergency stop reset button 13. The socket 2 is located on one side of the switch body 1. One end of the connecting rod 12 is inserted into the socket 2, and the other end is connected to the connecting rod limiting head 3. A protective plate is provided on the outside of the socket 2, including an upper protective plate 9 located above the connecting rod limiting head 3 and the connecting rod 12, and a lower protective plate 10 located below the connecting rod limiting head 3 and the connecting rod 12. One end of the pull-cord fixing head 5 is connected to the connecting rod limiting head 3, and the other end has a rope-tying hole 6 for securing the pull-cord. The device includes a fixed base and a safety lock 7. The fixed base includes a first fixed plate 4, a fixed back plate 14, and a second fixed plate 8 integrated together. The first fixed plate 4 and the second fixed plate 8 are connected together. The plates 8 are parallel and vertically aligned. The first fixed plate 4 and the second fixed plate 8 are each connected to one of the two end faces of the fixed back plate 14 in the same direction. At least one of the two fixed plates, the first fixed plate 4 and the second fixed plate 8, is longitudinally cut on one side near the fixed back plate 14 to form a strip. The base of the strip is bent inward to form an L-shaped locking strip 11, which includes a curved part 11.1 and a straight part 11.2. When the emergency stop pull rope switch is in the off state, the straight part 11.2 of the L-shaped locking strip 11 is inserted into the gap formed between the protective plate, the plug rod 12, the plug rod limiting head 3 and the socket 2, preventing the plug rod 12 from moving axially. The first fixed plate 4 and the second fixed plate 8 are provided with vertically aligned locking holes 15 on the side away from the L-shaped locking strip 11. The safety lock 7 can be locked through the locking holes 15. Example 2

[0020] See Figure 1 and Figure 2 A safety locking device for an emergency stop pull rope switch, based on the technical solution described in Embodiment 1, wherein the first fixed plate 4 and the second fixed plate 8 are symmetrically provided with L-shaped locking strips 11 on the same side near the fixed back plate 14, and the two straight strips 11.2 formed therein are inserted from the upper and lower directions of the plug rod 12 respectively, which has good balance and can more reliably prevent the plug rod 12 from moving axially. Example 3

[0021] See Figure 1 and Figure 2 An emergency stop pull rope switch safety lock device, based on the technical solution described in Embodiment 1, has a circular lock hole 15 to facilitate smoother locking of the safety lock 7. Example 4

[0022] See Figure 1 and Figure 2A safety lock device for an emergency stop pull rope switch, based on the technical solution described in Embodiment 1, includes a lock body 7.1 and a lock beam 7.2; the lock body 7.1 and the lock beam 7.2 are made of engineering plastic with high mechanical strength and good electrical insulation to enhance the safety and reliability of the safety lock 7. Example 5

[0023] See Figure 1 and Figure 2 A safety locking device for an emergency stop pull rope switch, based on the technical solution described in Embodiment 1, uses a high-strength metal base, preferably Q460 steel. Q460 steel is a high-strength low-alloy steel that only undergoes plastic deformation when subjected to a stress of 460 MPa.

[0024] The basic working principle of this utility model is as follows:

[0025] When the emergency stop pull rope is in the triggered state, pressing the emergency stop reset button 13 will reset the pull rope switch, and the equipment will continue to operate. If the emergency stop pull rope is in the opened state, even if the emergency stop reset button 13 is pressed, the pull rope switch cannot be reset, and the equipment will not continue to operate. Based on this principle, after the emergency stop pull rope is opened, the fixed base is installed at the corresponding positions of the pull rope fixing head 5 and the protective plate. That is, the first fixed plate 4 and the second fixed plate 8 pass through the pull rope fixing head 5 and the protective plate, respectively, and the fixed back plate 14 is attached tightly from the back. The straight part 11.2 of the L-shaped locking strip 11 is inserted into the gap formed between the protective plate, the plug rod 12, the plug rod limiting head 3 and the socket 2, preventing the plug rod 12 from moving axially. The locking beam 7.2 of the safety lock 7 is passed through the lock hole 15, so that the locking beam 7.2 is locked with the lock body 7.1. After installation, only when the operator opens the safety lock 7 with a key, pulls out the straight part 11.2 of the L-shaped locking bar 11, moves the plug rod 12 to connect with the socket 2, and presses the emergency stop reset button 13, can the pull rope switch be truly reset. This fully ensures the safety of personnel handling faults.

Claims

1. A safety locking device for an emergency stop pull-cord switch, the emergency stop pull-cord switch comprising a switch body, a socket, a connecting rod, a connecting rod limiting head, and a pull-cord fixing head, wherein the switch body is provided with an emergency stop reset button, the socket is located on one side of the switch body, one end of the connecting rod is inserted into the socket and the other end is connected to the connecting rod limiting head, a protective plate is provided on the outside of the socket, the protective plate comprising an upper protective plate located above the connecting rod limiting head and the connecting rod and a lower protective plate located below the connecting rod limiting head and the connecting rod, one end of the pull-cord fixing head is connected to the connecting rod limiting head and the other end is provided with a rope-tying hole for tying the pull-cord, characterized in that, The device includes a fixed base and a safety lock. The fixed base includes a first fixed plate, a fixed back plate, and a second fixed plate that are integrally connected. The first and second fixed plates are parallel and vertically aligned. The end faces of the first and second fixed plates in the same direction are each connected to one of the two end faces of the fixed back plate. At least one of the two fixed plates has a longitudinal cut on one side near the fixed back plate to form a strip, and the base of the strip is bent inward to form an L-shaped locking strip including a curved portion and a straight portion. When the emergency stop pull rope switch is in the off state, the straight portion of the L-shaped locking strip is inserted into the gap formed between the protective plate, the plug rod, the plug rod limiting head, and the socket, preventing the plug rod from moving axially. The first and second fixed plates have vertically aligned locking holes on the side away from the L-shaped locking strip. The safety lock can be locked through the locking holes.

2. The emergency stop pull rope switch safety lock device according to claim 1, characterized in that, The first and second fixed plates are symmetrically provided with L-shaped locking strips on the same side near the fixed back plate, and the two straight strips formed are inserted from the upper and lower directions of the plug rod respectively.

3. The emergency stop pull rope switch safety lock device according to claim 1, characterized in that, The keyhole is circular in shape.

4. The emergency stop pull rope switch safety lock device according to claim 1, characterized in that, The safety lock includes a lock body and a lock beam.

5. The emergency stop pull rope switch safety lock device according to claim 4, characterized in that, The lock body and lock beam are made of engineering plastics.

6. The emergency stop pull rope switch safety lock device according to claim 1, characterized in that, The fixed base is made of high-strength metal.

7. The emergency stop pull rope switch safety lock device according to claim 6, characterized in that, The high-strength metal is Q460 steel.

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