Lockable explosion-proof emergency stop button mechanism

Abstract

The application relates to a lockable anti-explosion emergency stop button mechanism of mining equipment, which comprises a switch main body, an emergency stop button assembly, a travel switch and a padlock, the emergency stop button assembly comprises an emergency stop button shaft, an emergency stop button copper sleeve, an emergency stop button spring, a steel ball, a lock shaft, a lock shaft spring and a lock pin; the application of the lockable anti-explosion emergency stop button mechanism eliminates the hidden troubles possibly caused by the fact that anyone can reset the emergency stop button after the emergency stop button is pressed in the past, the product can only be operated by a key holder after a U-shaped lock is matched, and the special design of the structural member guarantees the reliability of the mechanism.

Description

Technical Field

[0001] This application relates to the field of mining equipment technology, and in particular to a padlockable explosion-proof emergency stop button mechanism. Background Technology

[0002] Currently, most explosion-proof emergency stop buttons can be manually reset by anyone after being pressed. This doesn't effectively prevent arbitrary resets, potentially leading to unsuspecting individuals or misoperation that could energize equipment that should be de-energized, causing safety hazards. With increasing awareness of underground safety, this hazard urgently needs to be addressed. Utility Model Content

[0003] The purpose of this application is to provide a lockable explosion-proof emergency stop button mechanism, which improves upon the previous explosion-proof emergency stop button mechanism. After the button is pressed, a U-shaped copper lock is attached to the front end of the button, and non-key holders of the copper lock cannot reset the explosion-proof emergency stop button, thus avoiding potential safety hazards.

[0004] To achieve the above objectives, this utility model provides a padlockable explosion-proof emergency stop button mechanism, including a switch body, an emergency stop button assembly, a limit switch, and a padlock. The emergency stop button assembly is disposed within the switch body and connected to the limit switch, and the emergency stop button assembly can drive the limit switch to move. The padlock is disposed at the end of the emergency stop button assembly away from the limit switch, and the padlock can lock the emergency stop button assembly. The emergency stop button assembly includes an emergency stop button shaft, an emergency stop button copper sleeve, an emergency stop button spring, a steel ball, a locking shaft, a locking shaft spring, and a locking pin. The emergency stop button copper sleeve is fixed inside the switch body. The emergency stop button copper sleeve has a hollow inner cavity. The emergency stop button shaft is slidably connected to the inner cavity of the emergency stop button copper sleeve. A through groove penetrating the wall thickness is formed radially on the emergency stop button shaft. The emergency stop button spring is disposed in the through groove, and both ends of the emergency stop button spring extend outside the through groove and are fixed with steel balls. The inner wall of the emergency stop button copper sleeve cavity has an annular boss. Each side of the annular boss has an annular groove. When the emergency stop button shaft moves, the steel balls at both ends of the emergency stop button spring can be embedded in the annular grooves. The emergency stop button shaft moves away from the switch body. One end of the limit switch has a slot, one end of the locking shaft is slidably connected to the slot and elastically connected to the slot by a locking shaft spring, the other end of the locking shaft extends out of the slot and is connected to the padlock, the end of the locking shaft away from the limit switch has a first guide groove that penetrates its wall thickness radially, the end of the emergency stop button sleeve away from the limit switch has a second guide groove that penetrates its wall thickness radially, the locking pin passes through the first guide groove and the second guide groove respectively, and can slide along the first guide groove and the second guide groove, the first guide groove and the second guide groove can limit the movement range of the locking shaft.

[0005] To prevent the limit switch from exceeding its travel range, an emergency stop button bracket is fixed to one end of the switch body. The emergency stop button bracket is correspondingly disposed on one side of the limit switch, and a pad is fixed on the limit switch. The emergency stop button bracket can limit the movement range of the pad.

[0006] To further ensure safety, an emergency stop button protective sleeve is fixed to the other end of the switch body, and the emergency stop button protective sleeve is fitted over the emergency stop button shaft and the lock shaft.

[0007] To prevent the emergency stop button spring from twisting, several steel balls are provided at both ends of the emergency stop button spring.

[0008] To facilitate locking of the lock shaft, a circular hole penetrating its wall thickness is radially opened at the end of the lock shaft away from the limit switch, and the U-shaped locking rod of the padlock passes through the circular hole.

[0009] In summary, this utility model has the following beneficial effects: the application of this lockable explosion-proof emergency stop button mechanism eliminates the potential hazards that could arise from anyone being able to reset the emergency stop button after it has been pressed. Once the product is equipped with a U-lock, it can only be operated by the key holder. The specially designed structural components ensure the reliability of the mechanism. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the lockable explosion-proof emergency stop button mechanism of this utility model; Figure 2 This is a schematic diagram of the normally closed state of the lockable explosion-proof emergency stop button mechanism of this utility model; Figure 3 This is a schematic diagram of the normally open state of the lockable explosion-proof emergency stop button mechanism of this utility model. Detailed Implementation

[0011] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0012] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0013] like Figure 1The diagram shows a padlockable explosion-proof emergency stop button mechanism, comprising a switch body 1, an emergency stop button assembly, a limit switch 12, and a padlock 13. The switch body 1 is a cylindrical structure. The emergency stop button assembly is disposed inside the switch body 1 and connected to the limit switch 12. The emergency stop button assembly can drive the limit switch 12 to move. The padlock 13 is disposed at the end of the emergency stop button assembly away from the limit switch 12, and the padlock 13 can lock the emergency stop button assembly. In addition, an emergency stop button bracket 11 is detachably fixed to one end of the switch body 1. The emergency stop button bracket 11 is correspondingly disposed on one side of the limit switch 12, and the emergency stop button bracket 11 can limit the movement range of the limit switch 12. An emergency stop button protective sleeve 10 is detachably fixed to the other end of the switch body 1, and the emergency stop button protective sleeve 10 is sleeved on the outside of the emergency stop button assembly.

[0014] Specifically, in combination Figure 2 , Figure 3 As shown, the emergency stop button assembly includes an emergency stop button shaft 2, an emergency stop button copper sleeve 3, an emergency stop button spring 4, a steel ball 5, a locking shaft 6, a locking shaft spring 7, and a locking pin 8. The emergency stop button copper sleeve 3 is coaxially fixed to the inner cavity of the switch body 1. The emergency stop button copper sleeve 3 has a hollow inner cavity. The emergency stop button shaft 2 is coaxially slidably connected to the inner cavity of the emergency stop button copper sleeve 3. A through groove penetrating its wall thickness is opened radially on the emergency stop button shaft 2. The emergency stop button spring 4 is disposed in the through groove, and both ends of the emergency stop button spring 4 extend outside the through groove and are fixed with steel balls 5. Preferably, there are multiple steel balls 5. The inner wall of the emergency stop button copper sleeve 3 has an annular boss 14. The two sides of the annular boss 14 have annular grooves. When the emergency stop button shaft 2 moves, the steel balls 5 at both ends of the emergency stop button spring 4 can be embedded in the annular grooves. A washer 9 is detachably fixed to the left end of the emergency stop button shaft 2. The limit switch 12 is fixed on the washer 9. The washer 9 has a disc-shaped structure, and its diameter is larger than the diameter of the emergency stop button copper sleeve 3. The washer 9 cooperates with the emergency stop button bracket 11 to limit the movement range of the limit switch 12. The emergency stop button shaft 2 has a slot at the end (right end) away from the limit switch 12. One end (left end) of the locking shaft 6 is slidably connected to the slot and elastically connected to the slot through the locking shaft spring 7. The other end (right end) of the locking shaft 6 extends out of the slot and is connected to the padlock 13. The end (right end) of the locking shaft 6 away from the limit switch 12 has a first guide groove that penetrates its wall thickness. The end (right end) of the emergency stop button copper sleeve 3 away from the limit switch 12 has a second guide groove that penetrates its wall thickness. The second guide groove is connected to the first guide groove. The locking pin 8 passes through the first guide groove and the second guide groove respectively and can slide along the first guide groove and the second guide groove. The first guide groove and the second guide groove can limit the movement range of the locking shaft 6. In addition, the end (right end) of the locking shaft 6 away from the limit switch 12 has a circular hole that penetrates its wall thickness. The U-shaped locking rod of the padlock 13 passes through the circular hole.

[0015] When the lockable explosion-proof emergency stop button mechanism activates the emergency stop function, the operator presses the emergency stop button shaft 2 and the locking shaft 6. The steel ball 5, moving radially along the emergency stop button shaft 2, travels to the annular boss 14 of the emergency stop button sleeve 3, compressing the emergency stop button spring 4 until the steel ball 5 no longer protrudes from the cylindrical surface of the emergency stop button shaft 2, allowing it to pass through the annular boss 14. Then, the emergency stop button spring 4 returns to its original shape, pushing the steel ball 5 out of the cylindrical surface of the emergency stop button shaft 2, thus causing the steel ball 5 to lock into the groove on the other side of the annular boss 14 of the emergency stop button sleeve 3. Structurally, this achieves self-locking of the emergency stop button. After button shaft 2 is locked, since locking shaft 6 is also pressed together with emergency stop button shaft 2, locking shaft spring 7 is also in a compressed state. When the external force is released, locking shaft spring 7 returns to its original state, pushing locking shaft 6 out. However, due to the presence of locking pin 8, locking pin 8 is restricted within the first guide groove and the second guide groove, limiting the distance that locking shaft 6 can be pushed out, just enough to expose the round hole at the front end of locking shaft 6. At this time, when U-shaped padlock 13 is hung in the round hole at the front end of locking shaft 6, and the emergency stop button shaft 2 is pulled out, it is blocked by U-shaped padlock 13. Therefore, emergency stop button shaft 2 cannot be reset, and limit switch 12 remains in the normally closed state (e.g., Figure 2 (as shown) When a person with the key to the U-shaped padlock 13 opens and removes the lock, they then pull out the emergency stop button shaft 2. The steel ball 5, as it passes the annular protrusion 14 of the emergency stop button's copper sleeve 3, repeats the compression and recovery process, thus deactivating the emergency stop button and placing the limit switch in the normally open state (e.g., Figure 3 (As shown).

[0016] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.

Claims

1. A padlockable explosion-proof emergency stop button mechanism, comprising a switch body, an emergency stop button assembly, a limit switch, and a padlock, wherein the emergency stop button assembly is disposed within the switch body and connected to the limit switch, the emergency stop button assembly is capable of driving the limit switch to move, and the padlock is disposed at the end of the emergency stop button assembly away from the limit switch, the padlock being capable of locking the emergency stop button assembly, characterized in that: The emergency stop button assembly includes an emergency stop button shaft, an emergency stop button copper sleeve, an emergency stop button spring, a steel ball, a locking shaft, a locking shaft spring, and a locking pin; The emergency stop button copper sleeve is fixed inside the switch body. The emergency stop button copper sleeve has a hollow inner cavity. The emergency stop button shaft is slidably connected to the inner cavity of the emergency stop button copper sleeve. A through groove penetrating the wall thickness is formed radially on the emergency stop button shaft. The emergency stop button spring is disposed in the through groove, and both ends of the emergency stop button spring extend outside the through groove and are fixed with steel balls. The inner wall of the emergency stop button copper sleeve cavity has an annular boss. Each side of the annular boss has an annular groove. When the emergency stop button shaft moves, the steel balls at both ends of the emergency stop button spring can be embedded in the annular grooves. The emergency stop button shaft moves away from the switch body. One end of the limit switch has a slot, one end of the locking shaft is slidably connected to the slot and elastically connected to the slot by a locking shaft spring, the other end of the locking shaft extends out of the slot and is connected to the padlock, the end of the locking shaft away from the limit switch has a first guide groove that penetrates its wall thickness radially, the end of the emergency stop button sleeve away from the limit switch has a second guide groove that penetrates its wall thickness radially, the locking pin passes through the first guide groove and the second guide groove respectively, and can slide along the first guide groove and the second guide groove, the first guide groove and the second guide groove can limit the movement range of the locking shaft.

2. The lockable explosion-proof emergency stop button mechanism according to claim 1, characterized in that: An emergency stop button holder is fixed to one end of the switch body. The emergency stop button holder is correspondingly arranged on one side of the limit switch. A gasket is fixed on the limit switch. The emergency stop button holder can limit the movement range of the gasket.

3. The lockable explosion-proof emergency stop button mechanism according to claim 2, characterized in that: An emergency stop button protective sleeve is fixed to the other end of the switch body, and the emergency stop button protective sleeve is sleeved on the emergency stop button shaft and the lock shaft.

4. The lockable explosion-proof emergency stop button mechanism according to claim 1, characterized in that: Several steel balls are respectively provided at both ends of the emergency stop button spring.

5. The lockable explosion-proof emergency stop button mechanism according to claim 1, characterized in that: The end of the lock shaft furthest from the limit switch has a radially protruding circular hole that penetrates its wall thickness, and the U-shaped locking rod of the padlock passes through the circular hole.

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