Explosion-proof positive pressure cabinet with adjustable circuit breaker control structure

Abstract

The utility model discloses an explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure, which comprises a circuit breaker fixedly arranged in a cabinet body and an operation handle fixedly arranged on a cabinet door, and the circuit breaker comprises a circuit breaker shell and a switch handle rotationally arranged on the circuit breaker shell. A connecting structure is arranged between the switch handle and the operating handle, the connecting structure comprises a mounting frame and a connecting shaft, a first end of the connecting shaft is rotatably arranged on the mounting frame, the operating handle comprises a connecting sleeve which penetrates through the cabinet door and extends into the cabinet body, and the connecting sleeve is in insertion fit with a second end of the connecting shaft. An adjusting mechanism which is used for positioning the connecting shaft and can finely adjust the position of the second end of the connecting shaft is mounted on the mounting frame, and the adjusting mechanism comprises a Z-shaped plate and a flat plate, so that the connecting shaft can be better supported and positioned, and the position of the second end of the connecting shaft can be finely adjusted transversely and longitudinally.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof positive pressure cabinets, in particular to an explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure. Background Art

[0002] In the existing explosion-proof positive pressure cabinet, generally includes a circuit breaker fixedly installed in the cabinet body and an operating handle fixedly installed on the cabinet door, the circuit breaker includes a circuit breaker housing and a switch handle rotatably arranged on the circuit breaker housing, a connecting structure is arranged between the switch handle and the operating handle, the connecting structure includes a mounting frame and a connecting shaft, the mounting frame is mounted and fixed on the circuit breaker housing, the first end of the connecting shaft is rotatably arranged on the mounting frame, and a linkage mechanism is arranged between the first end of the connecting shaft and the switch handle, the operating handle includes a connecting sleeve that passes through the cabinet door and extends into the cabinet body, and the connecting sleeve and the second end of the connecting shaft form a plug-in fit. When working, the cabinet door is closed, and the operator rotates the operating handle to drive the connecting shaft to rotate, and then drives the switch handle on the circuit breaker itself to rotate through the linkage mechanism, so as to control the on and off of the circuit breaker. Since the circuit breaker is usually mounted and fixed on the bottom surface of the cabinet body, and the distance from the cabinet door is relatively long, the connecting shaft used to connect the circuit breaker and the operating handle on the cabinet door is usually relatively long, and the first end of the connecting shaft is mounted and positioned on the mounting frame, and the second shaft of the connecting shaft is extended to be plugged with the connecting sleeve of the operating handle on the cabinet door to achieve linkage matching. In this way, when the cabinet door is opened, the second end of the connecting shaft is separated from the connecting sleeve and is in a suspended state, and when the cabinet door is closed again, the connecting sleeve is plugged with the second end of the connecting shaft again. In this way, as the cabinet door is repeatedly opened and closed, the connecting sleeve and the second end of the connecting shaft are repeatedly plugged and unplugged, and their positions are easily offset. After long-term use, the cabinet door or other parts are also prone to some looseness. Therefore, it is difficult to ensure that the connecting sleeve and the second end of the connecting shaft can always be well aligned and plugged, and the prior art lacks a structure for fine-tuning the position of the second end of the connecting shaft. Therefore, once the situation that the alignment and plugging cannot be achieved occurs, the connecting shaft or the operating handle can only be disassembled and reassembled, which is inconvenient to operate. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure, which can not only provide better support and positioning for the connecting shaft, but also can perform horizontal and vertical fine adjustments on the position of the second end of the connecting shaft to facilitate better connection between the second end of the connecting shaft and the connecting sleeve on the operating handle. Compared with re-disassembling the connecting shaft or the operating handle, the operation is simpler.

[0004] To achieve the above-mentioned purpose, the utility model provides an explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure, comprising a circuit breaker fixedly installed in the cabinet body and an operating handle fixedly installed on the cabinet door, the circuit breaker comprising a circuit breaker housing and a switch handle rotatably arranged on the circuit breaker housing, a connecting structure is arranged between the switch handle and the operating handle, the connecting structure comprises a mounting frame and a connecting shaft, the mounting frame is mounted and fixed on the circuit breaker housing, the first end of the connecting shaft is rotatably arranged on the mounting frame, and a linkage mechanism is arranged between the first end of the connecting shaft and the switch handle, the operating handle comprises a connecting sleeve passing through the cabinet door and extending into the cabinet body, the connecting sleeve is plug-fitted with the second end of the connecting shaft, the mounting frame is provided with an adjusting mechanism for positioning the connecting shaft and fine-tuning the position of the second end of the connecting shaft, the adjusting mechanism The mechanism includes a Z-shaped plate and a flat plate, the Z-shaped plate including a first transverse end and a second transverse end, the first transverse end and the second transverse end being connected by a vertical end, the first transverse end and the second transverse end being both provided with a transverse long groove extending in the transverse direction, the first transverse end and the second transverse end being both connected to the mounting frame through a support rod, one end of the support rod being fixed to the mounting frame, the other end of the support rod being locked with the first transverse end or the second transverse end by a transverse positioning screw, the transverse positioning screw correspondingly passing through the transverse long groove, the flat plate being fitted with the vertical end of the Z-shaped plate, and the flat plate and the vertical end of the Z-shaped plate are correspondingly provided with through holes for the second end of the connecting shaft to pass through, a longitudinal long groove extending in the longitudinal direction is provided on the flat plate, the flat plate and the vertical end of the Z-shaped plate are locked by a longitudinal positioning screw, and the longitudinal positioning screw correspondingly passes through the longitudinal long groove.

[0005] The beneficial effects of the utility model are as follows: by adopting the scheme of the utility model, since the transverse positioning screw passes through the transverse long grooves at the first and second transverse ends of the Z-shaped plate to be fixed to the support rod, the transverse position of the Z-shaped plate can be fine-tuned accordingly, and the second end of the connecting shaft passes through the through hole of the Z-shaped plate, so the transverse position of the second end of the connecting shaft can be fine-tuned; similarly, since the longitudinal positioning screw passes through the longitudinal long groove on the flat plate to be fixed to the Z-shaped plate, the longitudinal position of the flat plate can be fine-tuned accordingly, and the second end of the connecting shaft also passes through the through hole of the flat plate, so the longitudinal position of the second end of the connecting shaft can be fine-tuned. In summary, the transverse and longitudinal positions of the second end of the connecting shaft can be fine-tuned through simple operations, so that the second end of the connecting shaft can be better plugged and linked with the connecting sleeve on the operating handle, which is easier to operate than re-disassembling the connecting shaft or the operating handle. In addition, by providing the Z-shaped plate, the flat plate and the support rod, the connecting shaft can be effectively supported and positioned to prevent the connecting shaft from being suspended after the cabinet door is opened, thereby allowing the connecting shaft to be in a more stable and reliable state when being plugged in and linked with the connecting sleeve on the operating handle.

[0006] The utility model can be further configured such that the linkage mechanism includes a mounting sleeve and a slide plate, the mounting sleeve is rotatably mounted on the mounting frame and fixed with the first end of the connecting shaft, a gear is mounted on the mounting sleeve, the slide plate is slidably mounted on the mounting frame and is provided with a rack meshing with the gear, and a connection port for the switch handle to be inserted is correspondingly provided on the slide plate. With the above structure, the operator rotates the operating handle to drive the connecting shaft to rotate, thereby driving the gear to rotate, and the slide plate is driven to slide through the cooperation of the gear and the rack, so that the slide plate corresponds to toggle the switch handle on the circuit breaker to realize the on-off switching operation of the circuit breaker.

[0007] The utility model can be further configured such that the connection port is provided with flaps that are turned outward and extend on both sides of the switch handle, thereby increasing the contact area between the slide plate and the switch handle, thereby not only being able to better toggle the switch handle, but also being able to effectively protect the switch handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of the utility model;

[0009] Figure 2 It is a structural diagram of the mounting frame part of the utility model;

[0010] Figure 3 It is a structural diagram of the adjustment mechanism part in the utility model;

[0011] Figure 4 It is a structural diagram of the operating handle part of the utility model. DETAILED DESCRIPTION

[0012] like Figure 1 , 2, 3, and 4 show an explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure, including a circuit breaker 1 fixedly installed in the cabinet body and an operating handle 2 fixedly installed on the cabinet door, the circuit breaker 1 includes a circuit breaker housing 11 and a switch handle 12 rotatably arranged on the circuit breaker housing 11, a connecting structure is arranged between the switch handle 12 and the operating handle 2, the connecting structure includes a mounting frame 3 and a connecting shaft 4, the mounting frame 3 is mounted and fixed on the circuit breaker housing 11, the first end 41 of the connecting shaft 4 is rotatably arranged on the mounting frame 3, and a linkage mechanism is arranged between the first end 41 of the connecting shaft 4 and the switch handle 12, the operating handle 2 includes a connecting sleeve 21 passing through the cabinet door and extending into the cabinet body, the connecting sleeve 21 is plugged into the second end 42 of the connecting shaft 4, the mounting frame 3 is equipped with an adjusting mechanism for positioning the connecting shaft 4 and fine-tuning the position of the second end 42 of the connecting shaft, the adjusting mechanism includes a Z-shaped plate 5 and a flat plate 6, the Z-shaped The plate 5 includes a first transverse end 51 and a second transverse end 52, which are connected by a vertical end 53, and the first transverse end 51 and the second transverse end 52 are both provided with a transverse long groove 54 extending in the transverse direction. The first transverse end 51 and the second transverse end 52 are both connected to the mounting frame 3 through a support rod 7, one end of the support rod 7 is fixed to the mounting frame 3, and the other end of the support rod 7 is locked with the first transverse end 51 or the second transverse end 52 by a transverse positioning screw 71, and the transverse positioning screw 71 passes through the transverse long groove 54 accordingly. The flat plate 6 is fitted with the vertical end 53 of the Z-shaped plate 5, and the flat plate 6 and the vertical end 53 of the Z-shaped plate 5 are correspondingly provided with a through hole 61 for the second end 42 of the connecting shaft 4 to pass through, and a longitudinal long groove 62 extending in the longitudinal direction is provided on the flat plate 6, and the flat plate 6 and the vertical end 53 of the Z-shaped plate 5 are locked by a longitudinal positioning screw 63, and the longitudinal positioning screw 63 passes through the longitudinal long groove 62 accordingly.

[0013] According to the solution of the utility model, since the transverse positioning screw 71 passes through the transverse long grooves 54 at the first and second transverse ends of the Z-shaped plate 5 to be fixed to the support rod 7, the transverse position of the Z-shaped plate 5 can be fine-tuned accordingly, and the second end 42 of the connecting shaft 4 passes through the through hole of the Z-shaped plate 5, so the transverse position of the second end 42 of the connecting shaft can be fine-tuned; similarly, since the longitudinal positioning screw 63 passes through the longitudinal long groove 62 on the flat plate 6 to be fixed to the Z-shaped plate 5, the longitudinal position of the flat plate 6 can be fine-tuned accordingly, and the second end 42 of the connecting shaft 4 also passes through the through hole 61 of the flat plate, so the longitudinal position of the second end 42 of the connecting shaft can be fine-tuned. In summary, the transverse and longitudinal positions of the second end 42 of the connecting shaft can be fine-tuned through simple operations, so that the second end 42 of the connecting shaft 4 can be better plugged and linked with the connecting sleeve 21 on the operating handle 2, which is easier to operate than re-disassembling the connecting shaft or the operating handle. In addition, by providing the Z-shaped plate 5, the flat plate 6 and the support rod 7, the connecting shaft 4 can be effectively supported and positioned to prevent the connecting shaft from being suspended after the cabinet door is opened, thereby enabling the connecting shaft to be in a more stable and reliable state when being plugged in and linked with the connecting sleeve on the operating handle.

[0014] The linkage mechanism includes a mounting sleeve 8 and a slide plate 9. The mounting sleeve 8 is rotatably mounted on the mounting frame 3 and fixed to the first end 41 of the connecting shaft 4. A gear 81 is mounted on the mounting sleeve 8. The slide plate 9 is slidably mounted on the mounting frame 3 and provided with a rack 91 meshing with the gear 81. A connection port 92 is correspondingly provided on the slide plate 9 for the switch handle 12 to extend into. With the above structure, the operator rotates the operating handle 2 to drive the connecting shaft 4 to rotate, thereby driving the gear 81 to rotate. The gear 81 cooperates with the rack 91 to drive the slide plate 9 to slide, so that the slide plate 9 corresponds to the switch handle 12 on the circuit breaker 1 to realize the on-off switching operation of the circuit breaker 1. The connection port 92 corresponds to the two sides of the switch handle 12 with flaps 93 that are turned outward and extended. In this way, the contact area of ​​the slide plate 9 and the switch handle 12 can be increased, so that the switch handle 12 can be better toggled and the switch handle 12 can be effectively protected.

Claims

1. An explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure, comprising a circuit breaker fixedly mounted in the cabinet and an operating handle fixedly mounted on the cabinet door, the circuit breaker comprising a circuit breaker housing and a switch handle rotatably mounted on the circuit breaker housing, a connecting structure is arranged between the switch handle and the operating handle, the connecting structure comprises a mounting frame and a connecting shaft, the mounting frame is mounted and fixed on the circuit breaker housing, the first end of the connecting shaft is rotatably mounted on the mounting frame, and a linkage mechanism is arranged between the first end of the connecting shaft and the switch handle, the operating handle comprises a connecting sleeve passing through the cabinet door and extending into the cabinet, the connecting sleeve and the second end of the connecting shaft form a plug-in fit, and the characteristics are as follows: The cam is connected to the mounting bracket by a first screw threading device and a second screw threading device, and the second screw threading device is connected to the mounting bracket by a first screw threading device.

2. The explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure according to claim 1, characterized in that: The linkage mechanism includes a mounting sleeve and a slide plate. The mounting sleeve is rotatably arranged on the mounting frame and is fixed to the first end of the connecting shaft. A gear is installed on the mounting sleeve. The slide plate is slidably arranged on the mounting frame and is provided with a rack meshing with the gear. A connecting port for the switch handle to extend into is correspondingly opened on the slide plate.

3. The explosion-proof positive pressure cabinet with an adjustable circuit breaker control structure according to claim 2, characterized in that: The connection port is provided with flaps that are turned outward and extend on both sides of the switch handle corresponding to the switch handle.

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