Intermittent spring locking mechanism

Abstract

The utility model discloses an intermittent spring locking mechanism, which comprises a locking disc, a positioning plate, a spring, a supporting pin and a spring hanging pin which are arranged on the positioning plate, a spring hanging shaft arranged on a main shaft fixing plate, and a rolling sleeve rotatably arranged on the supporting pin, the positioning plate is rotatably installed on the main shaft fixing plate, a notch-shaped positioning groove is formed in the circumferential edge of the locking disc, the rolling sleeve can roll along the circumferential edge of the locking disc, the supporting pin and the spring hanging pin are located on the same side of a rotating point of the positioning plate, and the two ends of the spring are connected to the spring hanging pin and the spring hanging shaft in a hung mode respectively. According to the utility model, the positioning and locking of programmed and automatic operation among a plurality of components in the switch cabinet are realized, the structure is compact, the size is small, the performance is stable, the installation, the operation, the maintenance, the disassembly and the replacement are convenient, and the working efficiency is improved. It is ensured that the multi-station programmed operating mechanism of the intelligent switch cabinet is accurately positioned after sequential operation according to a specified program, and the locking function is achieved.

Description

Technical Field

[0001] This utility model relates to an intermittent spring locking mechanism for positioning and locking of a multi-station programmed operating mechanism in an intelligent switch cabinet. Background Technology

[0002] Intelligent switchgear has changed the concept of traditional switchgear, featuring multi-functionality, digitalization, networking, intelligence, compact structure, and ease of maintenance. It can meet the future needs of the power industry and has many advantages such as preventing / avoiding accidents, reducing equipment maintenance and repair time, and realizing data resource sharing.

[0003] The foundation for intelligent switchgear lies first and foremost in the electrification of its operation. For fixed switchgear, a typical solution requires that the upper disconnect switch, upper grounding switch, lower disconnect switch, and lower grounding switch all be electrically operated for optimal intelligent operation. To ensure intelligent operation of fixed switchgear and achieve programmed and electrically operated operation of multiple components, multi-station programmed operating mechanisms have emerged. These mechanisms need to integrate the sequential operation of disconnect switches and grounding switches to achieve sequentially controlled electric operation. They must support intelligent electrical equipment, enabling monitoring of electrical parameters such as voltage, current, and power in the power supply circuit, and be compatible with various remote monitoring software. Simultaneously, they must support manual operation of the switchgear during commissioning, maintenance, and repair. Furthermore, in fixed switchgear, disconnect switches and grounding switches should have closed, open (isolated), and grounded positions. This requires the operating mechanism to have multiple positions and meet the electrical performance requirements of each position: for example, when the disconnecting switch is in the closed position, it connects the circuit and must not only carry the rated current, but also the rated short-time withstand current and rated peak withstand current at any time; in the open (isolated) position, it isolates the power supply and forms a clear break; when the grounding switch is in the grounding (closed) position, it releases residual charge and maintains zero potential grounding protection, and in some places, it may also need to carry the rated short-time withstand current and rated peak withstand current; when the grounding switch is in the open position, it maintains a stable position to prevent accidental closing of the grounding switch.

[0004] Whether it is a disconnector or a grounding switch, when it is in the open position, it must be reliably isolated from the power supply to form a clear break, so as to ensure the safety of maintenance personnel and equipment. When it is in the closed position, it must be able to withstand the impact from short-time withstand current and rated peak withstand current, as well as vibration and impact from nature without damage. That is to say, the operating mechanism of the disconnector and grounding switch must not only have accurate positioning function to ensure that its open and closed positions are accurate, but also need to be locked in the open and closed positions to prevent malfunctions that could cause equipment damage.

[0005] Intelligent switchgear requires the use of multi-station programmed operating mechanisms, which not only have electric operation functions but also need to implement unmanned operation. When the mechanism operates automatically in clockwise and counterclockwise directions, the positioning and locking of the multi-station programmed mechanism needs to be realized. Utility Model Content

[0006] The purpose of this utility model is to provide an intermittent spring locking mechanism that enables the positioning and locking of multiple components in an intelligent switch cabinet through programmed and automated operation.

[0007] The purpose of this utility model is achieved through the following technical measures: an intermittent spring locking mechanism, characterized in that it includes a locking disc, a positioning plate, a spring, a support pin and a spring-loaded pin disposed on the positioning plate, a spring-loaded shaft disposed on the main shaft fixing plate, and a roller sleeve rotatably mounted on the support pin. The locking disc is fixedly mounted on the main shaft of the operating mechanism and can rotate synchronously with the main shaft. The positioning plate is rotatably mounted on the main shaft fixing plate. The circumferential edge of the locking disc is provided with a notch-shaped positioning groove. The roller sleeve can roll along the circumferential edge of the locking disc. The support pin and the spring-loaded pin are both located on the same side of the rotation point of the positioning plate. The two ends of the spring are respectively hooked onto the spring-loaded pin and the spring-loaded shaft. The elastic restoring force of the spring ensures that the roller sleeve and the circumferential edge of the locking disc remain in contact during the rotation of the locking disc, and the main shaft is positioned and locked when the roller sleeve falls into the positioning groove.

[0008] This invention enables the positioning and locking of multiple components in a switch cabinet through programmed and automated operation, achieving unmanned operation and meeting the needs of intelligent switch cabinets. Moreover, this invention has a compact structure, small size, and stable performance, facilitating installation, operation, maintenance, disassembly, and replacement. It ensures the accurate positioning of the multi-station programmed operating mechanism of the intelligent switch cabinet after sequential operation according to the prescribed program, and realizes the locking function, preventing equipment damage caused by malfunction of switching devices in the switch cabinet.

[0009] The spring of this invention is located on the outside of the spindle fixing plate, and the positioning plate and locking disc are located on the inside of the spindle fixing plate. An opening is provided on the spindle fixing plate, and the hanging spring pin passes through the opening and is connected to the spring.

[0010] The positioning grooves described in this invention are four in number and are evenly distributed along the circumference of the locking plate.

[0011] The positioning plate of this utility model is an elongated plate. A pin is provided on the main shaft fixing plate. One end of the positioning plate is rotatably mounted on the pin. A positioning sleeve is provided on the pin and between the positioning plate and the main shaft fixing plate. The support pin is located in the middle of the positioning plate, and the hanging spring pin is located at the other end of the positioning plate.

[0012] The locking disc of this invention has a smooth transition curve on its circumferential edge, which allows the operating mechanism to rotate flexibly without jamming and reduces wear on the outer circle of the locking disc and the rolling sleeve.

[0013] The thickness of the roller sleeve described in this invention is greater than the thickness of the locking disc.

[0014] Compared with the prior art, the present invention has the following significant advantages:

[0015] (1) This utility model can realize the positioning and locking of multiple components in the switch cabinet through programmed and automated operation, enabling unmanned operation and meeting the needs of intelligent switch cabinets.

[0016] (2) This utility model has a compact structure, small size, and stable performance, and is easy to install, operate, maintain, disassemble and replace. It can ensure the accurate positioning of the multi-station programmed operating mechanism of the intelligent switch cabinet after it performs sequential operation according to the prescribed procedure, and realize the locking function, which can prevent equipment damage caused by malfunction of the switching devices in the switch cabinet.

[0017] (3) Under the action of spring force, the sleeve installed on the support pin is always in contact with the outer circle of the positioning locking disc. The outer circle of the locking disc is designed as a smooth transition curve, which makes the mechanism rotate flexibly without jamming and can reduce the wear between the outer circle of the locking disc and the sleeve.

[0018] (4) This utility model has a simple structure, low cost, and strong practicality, and is suitable for widespread promotion and use. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a front view of the application of this utility model to the operating mechanism;

[0021] Figure 2 This is a top view of the application of this utility model to the operating mechanism;

[0022] Figure 3 This is a side view of the application of this utility model to the operating mechanism;

[0023] Figure 4 This is a top sectional view of the present invention;

[0024] Figure 5 This is a schematic diagram of the working process of this utility model;

[0025] Figure 6 This is a schematic diagram of the installation of the hanging spring shaft of this utility model;

[0026] Figure 7 This is a schematic diagram of the positioning plate of this utility model;

[0027] Figure 8 This is a schematic diagram of the installation of the positioning plate of this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the locking disc of this utility model.

[0029] In the diagram: 1-Hanging spring shaft, 2-Spring, 3-Positioning plate, 3.1-Hanging spring pin, 3.2-Support pin, 4-Rolling sleeve, 5-Locking disc, 5.1-Positioning groove, 6-Positioning sleeve, 7-Pin shaft, 8-Main spindle fixing plate, 9-Main spindle, 10-Opening. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] like Figures 1-9 As shown, this utility model discloses an intermittent spring locking mechanism, including a locking disc 5, a positioning plate 3, a spring 2, a support pin 3.2 and a hanging spring pin 3.1 set on the positioning plate 3, a hanging spring shaft 1 set on the main shaft fixing plate 8, and a roller sleeve 4 rotatably mounted on the support pin 3.2. The locking disc 5 is fixedly mounted on the main shaft 9 of the operating mechanism and can rotate synchronously with the main shaft 9. The positioning plate 3 is an elongated plate body, and a pin 7 is provided on the main shaft fixing plate 8. One end of the positioning plate 3 is rotatably mounted on the pin 7. Four notched positioning grooves 5.1 are evenly distributed on the circumferential edge of the locking disc 5, and the circumferential edge of the locking disc 5 is a smoothly transitioned curve. The roller sleeve 4 can roll along the circumferential edge of the locking disc 5. The support pin 3.2 is located in the middle of the positioning plate 3, and the hanging spring pin 3.1 is located at the other end of the positioning plate 3. That is, the hanging spring pin 3.1 and the support pin 3.2 are both located on the same side of the rotation point of the positioning plate 3. The two ends of the spring 2 are respectively hooked on the hanging spring pin 3.1 and the hanging spring shaft 1. The elastic restoring force of the spring 2 ensures that the rolling sleeve 4 and the circumferential edge of the locking disc 5 remain in contact during the rotation of the locking disc 5, and the main shaft 9 is positioned and locked when the rolling sleeve 4 falls into the positioning groove 5.1.

[0032] The spindle fixing plate 8 of this utility model refers to a fixing plate used in intelligent switch cabinets for installing the spindle 9 of a multi-station programmed operating mechanism. Figure 1 As can be seen, there is a fixing plate on each side of the spindle 9. Here, the spindle fixing plate 8 refers to the fixing plate on the left side.

[0033] In this embodiment, the spring 2 is located on the outside of the spindle fixing plate 8, and the positioning plate 3 and the locking disc 5 are located on the inside of the spindle fixing plate 8. An opening 10 is provided on the spindle fixing plate 8, and the hanging pin 3.1 passes through the opening 10 and is connected to the spring 2. As the roller sleeve 4 rolls along the circumferential edge of the locking disc 5, the hanging pin 3.1 moves up and down, and the opening 10 satisfies the movement stroke of the hanging pin 3.1.

[0034] The installation process of this utility model is as follows:

[0035] like Figure 6 As shown, the spring shaft 2 is fixedly installed on the left side plate of the multi-station programmed operating mechanism of the intelligent switchgear; as shown... Figure 7 As shown, the positioning plate 3 is welded with a hanging spring pin 3.1 and a support pin 3.2; as Figure 8 As shown, pin 7 is fixedly installed on the left side plate of the multi-station programmed operating mechanism of the intelligent switchgear. Positioning plate 3 and positioning sleeve 6 are installed in conjunction with pin 7. Positioning plate 3 can rotate around pin 7 with pin 7 as the center. Roller sleeve 4 is installed in conjunction with support pin 3.2. Roller sleeve 4 can rotate freely around support pin 3.2 with support pin 3.2 as the center. Figure 9 As shown, four identical positioning slots 5.1 are evenly arranged on the locking disc 5. These slots are mounted on the main shaft of the multi-station programmed operating mechanism of the intelligent switchgear and rotate together with the main shaft. The outer circle of the locking disc 5 is designed with a smoothly transitioning curve, allowing the mechanism to rotate flexibly without jamming, thus reducing wear on the outer circle of the main shaft positioning locking disc 5 and the rolling sleeve 4. Figure 3 , Figure 4 , Figure 5 As shown, spring 2 is connected between spring shaft 1 and support pin 3.2. Under the action of spring force, the roller sleeve 4 installed on support pin 3.2 is always in contact with the outer circle of positioning locking disk 5. The roller sleeve 4, which rotates freely around support pin 3.2, rolls on the outer circle of positioning locking disk 5, realizing flexible rotation of the mechanism and reducing wear on the outer circle of main shaft positioning locking disk 5 and roller sleeve 4.

[0036] The working process of this utility model is as follows:

[0037] like Figure 3 , Figure 5As shown, when the main shaft of the multi-station programmed operating mechanism of the intelligent switchgear rotates counterclockwise, the main shaft drives the locking disc 5 to rotate counterclockwise as well. Every 90° rotation of the main shaft, the sleeve falls into one of the four positioning slots 5.1 on the locking disc 5. At this time, the operation of one station is completed. Under the action of the spring force, the locking disc 5 positions and locks the main shaft of the mechanism. Within the control range of the spring force, the main shaft of the mechanism is positioned and locked. Overcoming the action of the spring force, the main shaft continues to be driven to rotate counterclockwise. The main shaft rotates 90° again, and the sleeve 4 falls into the other of the four evenly arranged positioning slots 5.1 on the locking disc 5. At this time, the operation of another station is completed. Within the control range of the spring force, the main shaft of the mechanism is positioned and locked. The main shaft can be rotated counterclockwise 360° in this way. Conversely, driving the main shaft to rotate clockwise can also sequentially complete the main shaft rotation clockwise 360°. Under the action of the spring force, the locking disc 5 positions and locks the main shaft of the mechanism. Within the control range of the spring force, the main shaft of the mechanism is positioned and locked. When there are no other restrictions, this utility model can be continuously rotated clockwise for 90°, then intermittently; it can also be continuously rotated counterclockwise for 90°, then intermittently.

[0038] In this example, due to the limitations of the multi-station programmed operating mechanism, four positioning slots are evenly arranged on the spindle positioning and locking disc. The positioning and locking disc rotates clockwise, pauses every 90°, rotates 360°, then rotates counterclockwise, pauses every 90°, and rotates 360° to complete one operation cycle. Alternatively, it can rotate 90° clockwise, pause, then rotate 90° counterclockwise, pause, and complete the operation of one station.

Claims

1. An intermittent spring locking mechanism, characterized in that: The device includes a locking disc, a positioning plate, a spring, a support pin and a spring-loaded pin on the positioning plate, a spring-loaded shaft on the main shaft fixing plate, and a roller sleeve rotatably mounted on the support pin. The locking disc is fixedly mounted on the main shaft of the operating mechanism and can rotate synchronously with the main shaft. The positioning plate is rotatably mounted on the main shaft fixing plate. The circumferential edge of the locking disc has a notched positioning groove. The roller sleeve can roll along the circumferential edge of the locking disc. The support pin and the spring-loaded pin are both located on the same side of the rotation point of the positioning plate. The two ends of the spring are respectively hooked onto the spring-loaded pin and the spring-loaded shaft. The elastic restoring force of the spring ensures that the roller sleeve always maintains contact with the circumferential edge of the locking disc during the rotation of the locking disc, and positions and locks the main shaft when the roller sleeve falls into the positioning groove.

2. The intermittent spring locking mechanism according to claim 1, characterized in that: The positioning slots are four in number and are evenly distributed along the circumference of the locking plate.

3. The intermittent spring locking mechanism according to claim 2, characterized in that: The circumferential edge of the locking disc is a smoothly transitioning curve.

4. The intermittent spring locking mechanism according to claim 3, characterized in that: The spring is located on the outside of the spindle fixing plate, and the positioning plate and locking disc are located on the inside of the spindle fixing plate. An opening is provided on the spindle fixing plate, and the hanging spring pin passes through the opening and is connected to the spring.

5. The intermittent spring locking mechanism according to claim 4, characterized in that: The positioning plate is an elongated plate with a pin on the main shaft fixing plate. One end of the positioning plate is rotatably mounted on the pin. A positioning sleeve is provided on the pin and between the positioning plate and the main shaft fixing plate. The support pin is located in the middle of the positioning plate, and the hanging spring pin is located at the other end of the positioning plate.

6. The intermittent spring locking mechanism according to claim 5, characterized in that: The thickness of the roller sleeve is greater than the thickness of the locking disc.

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