Two-position lower door unlocking linkage mechanism

Abstract

The utility model relates to a two -station's lower door unlocking linkage mechanism passes through the synergies of main shaft, operating cam, indication subassembly etc. parts, realized the unlocking operation of lower door, and operating personnel only need to rotate simple operation such as main shaft, can drive operating cam rotation, and further triggers a series of linkage actions, completes lower door unlocking, compared with the unlocking mode that the traditional need multiple steps, multiple parts cooperative operation and easy to make mistakes, this mechanism greatly simplifies the operation process, improves the operation efficiency, and the microswitch is installed on the microswitch of single -pole support one side, when the abnormal situation appears in the lower door unlocking process, such as unlocking not in place or over unlocking, microswitch can detect in time and send the electric signal, cut off the equipment power or trigger the alarm device, trigger the corresponding protection mechanism, prevent the equipment damage or personnel casualty, effectively improved the safety of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a two-station lower door unlocking linkage mechanism. Background Technology

[0002] In many fields such as power equipment and industrial control equipment, the inspection, maintenance, and normal operation of equipment often require unlocking specific parts, with unlocking the lower door being a common and critical step. Traditional two-station lower door unlocking mechanisms have revealed numerous problems in practical applications, severely impacting operational efficiency and safety. These mechanisms typically require multiple steps and components working together to unlock the door. Furthermore, they lack effective detection and protection mechanisms for abnormal situations such as incomplete or excessive unlocking during the unlocking process. Additionally, they lack effective measures to prevent misoperation when the equipment is locked. Components in traditional unlocking mechanisms, such as shafts and supports, are prone to wear and loosening over long-term use, leading to decreased precision in component fit and affecting the stability and reliability of the unlocking operation. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a two-station lower door unlocking linkage mechanism that improves operating efficiency, enhances security, and has multiple security protection mechanisms.

[0004] To achieve the above objectives, this utility model employs a two-station lower door unlocking linkage mechanism, including a lower door bracket. A base plate is fixedly installed at one end of the lower door bracket, and a single-rod bracket is fixedly installed at the other end. A lower door transmission assembly is disposed within the internal space enclosed by the base plate and the lower door bracket. A main shaft is provided on the single-rod bracket, and the main shaft is coaxially disposed through the base plate and the lower door bracket. A main shaft sleeve is fitted on the main shaft, and an indicator component is installed on the main shaft sleeve. An operating cam is provided on the main shaft at the end of the main shaft away from the lower door bracket. A micro-motion plate is provided on one side of the single-rod bracket, and a micro switch is installed on the micro-motion plate.

[0005] The beneficial effects of the above structure are as follows: through the coordinated action of components such as the main shaft, operating cam, and indicating assembly, the unlocking operation of the lower door is realized. The operator only needs to perform simple operations such as rotating the main shaft to drive the operating cam to rotate, thereby triggering a series of linkage actions to complete the unlocking of the lower door. Compared with the traditional unlocking method that requires multiple steps and multiple components to coordinate and is prone to errors, this mechanism greatly simplifies the operation process and improves the operation efficiency. A micro switch is installed on the micro plate on one side of the single-pole bracket. If an abnormal situation occurs during the unlocking process of the lower door, such as incomplete unlocking or over-unlocking, the micro switch can detect it in time and send an electrical signal to cut off the power supply of the equipment or trigger the alarm device and trigger the corresponding protection mechanism to prevent equipment damage or personal injury, effectively improving the safety of equipment operation.

[0006] This utility model is further configured such that the indicator assembly includes an indicator mounting plate mounted on the main shaft sleeve. A baffle is fixedly mounted on the indicator mounting plate by screws. A return spring is provided on the baffle and the indicator mounting plate. A rotating screw is provided on the indicator mounting plate. A snap-fit ​​groove is provided on the baffle. One end of the return spring is snapped into the snap-fit ​​groove of the baffle, and the other end is snapped into the rotating screw on the indicator mounting plate. An indicator shaft is also provided on the baffle. A lower door unlock indicator is hinged on the indicator shaft. An interlocking baffle is installed on one end of the lower door unlock indicator. A waist-shaped groove is provided on the lower door unlock indicator. An indicator screw installed in the waist-shaped groove is provided between the lower door unlock indicator and the interlocking baffle. The design of the snap-fit ​​groove and rotating screw provides a stable connection point for the return spring, allowing the baffle to accurately return to its initial position after being subjected to external force. By adjusting the position of the indicator screw in the slot, the rotation angle of the indicator shaft can be changed, thereby driving the interlock baffle to move. When the equipment is locked, the interlock baffle automatically blocks and isolates the operating hole through the rotation of the indicator shaft to prevent accidental operation. When unlocking, the interlock baffle moves away, exposing the operating hole to allow legal operation. In addition, the interlock baffle works in conjunction with the lower door unlock indicator. The interlock baffle can dynamically restrict or allow operation according to the equipment status. Combined with the mechanical reset function of the return spring, a multi-layered safety protection mechanism is formed to ensure the safety of the equipment during operation.

[0007] This utility model is further configured with an isolation electric operating mechanism mounted on the base plate. The isolation electric operating mechanism is provided with an electric operating shaft. The base plate is provided with a shaft opening corresponding to the electric operating shaft. The base plate is also provided with a type I dynamic fit assembly. The type I dynamic fit assembly includes a rotating plate, a dynamic sealing bushing, and a dynamic fit sleeve. The electric operating shaft on the isolation electric operating mechanism extends outward through the shaft opening in the base plate into the dynamic sealing bushing. The rotating plate and the dynamic fit sleeve are respectively fitted on the outer wall of the dynamic sealing bushing. A limit post is also welded to the base plate. The limit post is used to limit the rotation range of the rotating plate during operation. The dynamic seal bushing not only provides stable support for the electric operating shaft, but its excellent sealing performance also effectively prevents external dust and moisture from entering the electric operating mechanism. This avoids problems such as corrosion and short circuits of internal parts caused by dust and moisture intrusion, ensuring the normal operation of internal parts. In addition, the dynamic mating sleeve works in conjunction with the dynamic seal bushing. Through the tight fit between the dynamic mating sleeve and the dynamic seal bushing, it provides more precise radial constraint for the electric operating shaft, reducing the radial runout of the shaft. The limit post is used to limit the rotation range of the rotating plate during operation, ensuring that the rotating plate rotates within a safe range and preventing equipment failure or injury to operators caused by excessive rotation of the rotating plate.

[0008] This utility model further specifies that the lower door drive assembly includes a lower door drive plate and a lower door knife bracket built into the lower door drive plate. A lower door shaft is snapped onto the lower door drive plate, and the lower door knife bracket is connected to the lower door drive plate via the lower door shaft. A spring guide plate is provided inside the lower door knife bracket. One end of the spring guide plate is connected to the lower door shaft, and the other end passes through a base plate shaft. The two ends of the base plate shaft are respectively connected to the base plate and the lower door bracket. A spring is wound around the spring guide plate. The lower door shaft, as a key component connecting the lower door drive plate and the lower door knife bracket, provides stable support and precise guidance for the relative movement between the two. The spring wound on the spring guide plate and the connection design between the spring guide plate and the lower door shaft and the base plate shaft provide good elastic buffering and adjustment functions for the lower door drive assembly. The base plate shaft connects the base plate and the lower door bracket, and through its cooperation with the spring guide plate, forms an organic moving whole between the base plate, the lower door bracket, and the lower door drive assembly. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0010] Figure 2 This is an exploded view showing the installation of the lower door bracket, base plate, and single bar bracket according to an embodiment of this utility model.

[0011] Figure 3 This is an exploded view of the installation of the single-rod bracket and the indicator component according to an embodiment of this utility model.

[0012] Figure 4This is an exploded view of the installation of the isolation electric operating mechanism and the type I moving engagement component according to an embodiment of the present utility model.

[0013] Figure 5 This is a schematic diagram of the lower door transmission assembly structure according to an embodiment of the present utility model. Detailed Implementation

[0014] like Figures 1-5 As shown, an embodiment of this utility model provides a two-station lower door unlocking linkage mechanism, including a lower door bracket 1. A base plate 2 is fixedly installed at one end of the lower door bracket 1, and a single rod bracket 3 is fixedly installed at the other end. A lower door transmission assembly 4 is provided in the internal space enclosed by the base plate 2 and the lower door bracket 1. A main shaft 31 is provided on the single rod bracket 3. The main shaft 31 is coaxially connected through the base plate 2 and the lower door bracket 1. A main shaft sleeve 32 is sleeved on the main shaft 31. An indicator assembly 5 is installed on the main shaft sleeve 32. An operating cam 6 is installed on the main shaft 31 at the end of the main shaft 31 away from the lower door bracket 1. A micro plate 7 is provided on one side of the single rod bracket 3. A micro switch 71 is installed on the micro plate 7.

[0015] The indicator assembly 5 includes an indicator mounting plate 51 mounted on the main shaft sleeve 32. A baffle 52 is fixedly mounted on the indicator mounting plate 51 by screws. A return spring 53 is provided on the baffle 52 and the indicator mounting plate 51. A rotating screw 54 is provided on the indicator mounting plate 51. A snap-fit ​​groove is provided on the baffle 52. One end of the return spring 53 is snapped into the snap-fit ​​groove of the baffle 52, and the other end is snapped into the rotating screw 54 on the indicator mounting plate 51. An indicator shaft 55 is also provided on the baffle 52. A lower door unlock indicator 56 is hinged to the indicator shaft 55. An interlocking baffle 58 is installed on one end of the lower door unlock indicator 56. A waist-shaped groove 57 is provided on the lower door unlock indicator 56. An indicator screw 59 installed in the waist-shaped groove 57 is provided between the lower door unlock indicator 56 and the interlocking baffle 58.

[0016] An isolating electric operating mechanism 8 is installed on the base plate 2. An electric operating shaft 81 is provided on the isolating electric operating mechanism 8. The base plate 2 has a shaft opening corresponding to the electric operating shaft 81. An I-type dynamic fit assembly 9 is also provided on the base plate 2. The I-type dynamic fit assembly 9 includes a rotating plate 91, a dynamic sealing bushing 92, and a dynamic fit sleeve 93. The electric operating shaft 81 on the isolating electric operating mechanism 8 extends outward through the shaft opening in the base plate 2 into the dynamic sealing bushing 92. The rotating plate 91 and the dynamic fit sleeve 93 are respectively fitted on the outer wall of the dynamic sealing bushing 92. A limit post 21 is also welded on the base plate 2. The limit post 21 is used to limit the rotation range of the rotating plate 91 during operation. During operation, the main shaft 31 does not participate in the rotation but only plays a related cooperative role.

[0017] The lower door drive assembly 4 includes a lower door drive plate 41 and a lower door knife bracket 42 built into the lower door drive plate 41. A lower door shaft 43 is snapped onto the lower door drive plate 41. The lower door knife bracket 42 is connected to the lower door drive plate 41 through the lower door shaft 43. A spring guide plate 44 is provided inside the lower door knife bracket 42. One end of the spring guide plate 44 is connected to the lower door shaft 43, and the other end is provided with a bottom plate shaft 45. The two ends of the bottom plate shaft 45 are respectively connected to the bottom plate 2 and the lower door bracket 1. A spring 46 is wound on the spring guide plate 44.

[0018] Of course, in addition to the above embodiments, this utility model may have other various embodiments. Without departing from the essential technical solution of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, and these changes or modifications are equivalent to the technical solution in this patent. Therefore, these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model, and the utility model creation is in line with the applicant's actual R&D capabilities and resource conditions.

Claims

1. A two-station lower door unlatching linkage characterized by: The device includes a lower door bracket, one end of which is fixedly mounted with a base plate, and the other end of which is fixedly mounted with a single-rod bracket. A lower door transmission assembly is disposed within the internal space enclosed by the base plate and the lower door bracket. A main shaft is provided on the single-rod bracket, and the main shaft is coaxially disposed through the base plate and the lower door bracket. A main shaft sleeve is fitted on the main shaft, and an indicator component is installed on the main shaft sleeve. An operating cam is provided on the main shaft at the end of the main shaft away from the lower door bracket. A micro-motion plate is provided on one side of the single-rod bracket, and a micro switch is installed on the micro-motion plate.

2. The two-position lower door unlatching linkage of claim 1, wherein: The indicating assembly includes an indicating mounting plate mounted on the main shaft sleeve. A baffle is fixedly mounted on the indicating mounting plate by screws. A return spring is provided on the baffle and the indicating mounting plate. A rotating screw is provided on the indicating mounting plate. A snap-fit ​​groove is provided on the baffle. One end of the return spring is snapped into the snap-fit ​​groove of the baffle, and the other end is snapped into the rotating screw on the indicating mounting plate. An indicating shaft is also provided on the baffle. A lower door unlocking indicator is hinged on the indicating shaft. An interlocking baffle is installed on one end of the lower door unlocking indicator. A waist-shaped groove is provided on the lower door unlocking indicator. An indicating screw installed in the waist-shaped groove is provided between the lower door unlocking indicator and the interlocking baffle.

3. A two-position lower door unlatching linkage as defined in claim 1 or 2, characterized in that: An isolating electric operating mechanism is installed on the base plate. The isolating electric operating mechanism is provided with an electric operating shaft. The base plate is provided with a shaft opening corresponding to the electric operating shaft. The base plate is also provided with a type I dynamic fit assembly. The type I dynamic fit assembly includes a rotating plate, a dynamic sealing bushing, and a dynamic fit sleeve. The electric operating shaft on the isolating electric operating mechanism extends outward through the shaft opening in the base plate into the dynamic sealing bushing. The rotating plate and the dynamic fit sleeve are respectively fitted on the outer wall of the dynamic sealing bushing. A limit post is also welded to the base plate. The limit post is used to limit the rotation range of the rotating plate during operation.

4. The two-position lower door unlatching linkage of claim 3, wherein: The lower door drive assembly includes a lower door drive plate and a lower door knife bracket built into the lower door drive plate. A lower door shaft is snapped onto the lower door drive plate. The lower door knife bracket is connected to the lower door drive plate through the lower door shaft. A spring guide plate is provided inside the lower door knife bracket. One end of the spring guide plate is connected to the lower door shaft, and the other end is provided with a base plate shaft. The two ends of the base plate shaft are respectively connected to the base plate and the lower door bracket. A spring is wound on the spring guide plate.

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