A swing arm type mechanical locking structure for isolating switch
By adopting a swing arm mechanical locking structure in the isolating switch and using line contact and screw adjustment design, the problem of existing push-pull isolation switches being susceptible to wind and sand to clamp, achieving higher fault tolerance and convenient installation and adjustment.
Patent Information
- Application Number
- CN202421443671.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The existing push-pull isolation switch mechanical locking structure is susceptible to wind and sand due to the large contact surface.
The swing arm type mechanical locking structure is adopted. Through the design of the locking disc, the locking joint and the connecting joint, the first roller contacts with the line contact between the locking disc, and the connecting joints on the main tool side and the ground tool side are connected by a screw to adjust the distance between the locking joint and the connecting joint.
It effectively reduces the risk of stagnation, increases the fault tolerance rate, and the open structure of the locking joint and connecting joint is easy to install and adjust.
Smart Images
Figure CN222705367U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of isolating switches, in particular to a swing arm type mechanical locking structure of an isolating switch. Background Art
[0002] The mechanical lock of the isolating switch is generally installed on the isolating switch body, and uses the mechanical linkage components of the electrical equipment to form a blocking and locking braking relationship at a specific position of the mechanical stroke. In the prior art, the mechanical locking structure is a push-pull movement, and the contact form of the locking structure is surface-to-surface contact, with a large friction area, which is easily blocked by wind and sand. Utility Model Content
[0003] The utility model aims to provide a swing arm type mechanical locking structure for an isolating switch, which is used to solve the problem that the existing push-pull type isolating switch locking structure is easily affected by wind and sand and becomes stuck due to the large contact surface.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a swing arm type mechanical locking structure of an isolating switch, the main knife side and the ground knife side of the isolating switch are each provided with a mounting bracket, a locking disk, a locking joint and a connecting joint, the locking disk is located on the inner side of the mounting bracket, the locking disk located on the main knife side is fixedly connected to the vertical connecting rod on the main knife side, the locking disk located on the ground knife side is fixedly connected to the vertical connecting rod on the ground knife side, one end of the locking joint is hingedly connected to the mounting bracket, one end of the connecting joint is hingedly connected to the other end of the locking joint, the locking disk located on the main knife side is fixedly connected to the vertical connecting rod on the ground knife side, one end of the locking joint is hingedly connected to the mounting bracket, one end of the connecting joint is hingedly connected to the other end of the locking joint, The other end of the connecting joint on the main knife side is threadedly connected to one end of the screw, and the other end of the connecting joint on the ground knife side is threadedly connected to the other end of the screw; the edge of the locking disk has a slot, and the locking joint has a first roller in linear contact with the locking disk; when the first roller on the main knife side contacts the part of the locking disk except the slot, the first roller on the ground knife side is located in the slot of the locking disk; when the first roller on the ground knife side contacts the part of the locking disk except the slot, the first roller on the main knife side is located in the slot of the locking disk.
[0005] Furthermore, the locking joint includes a cylinder and a fixing plate, the cylinder is hingedly connected to the mounting bracket, the fixing plates are two parallelly arranged pieces, one end of the fixing plate is fixedly connected to the outer wall of the cylinder, and the other end of the fixing plate is hingedly connected to the connecting joint.
[0006] Furthermore, the first roller is located between two fixing plates.
[0007] Furthermore, the side wall of the cylinder has a positioning hole, and a positioning pin is provided in the positioning hole, and one end of the positioning pin extends into the pin shaft of the cylinder and the mounting bracket.
[0008] Furthermore, the connecting joint includes a nut and a clamping plate, the clamping plates are two pieces arranged in parallel, the nut is fixed between one ends of the two clamping plates, and the other end of the clamping plate is hingedly connected to the other end of the fixing plate.
[0009] Furthermore, the cylinder and the mounting bracket, the first roller and the fixed plate, and the fixed plate and the clamping plate are all connected via a pin hinge, and a second roller is provided on the outer side of the pin between the fixed plate and the clamping plate.
[0010] Furthermore, a washer is provided between the first roller and the lower fixing plate and is loosely sleeved on the pin shaft.
[0011] Furthermore, in the vertical direction, the locking plate is located between the two clamping plates and also between the two fixing plates, so that the locking joint and the connecting joint are both open structures.
[0012] The beneficial effect of the utility model is that only the first roller among the components of the utility model contacts the outer wall of the locking disk, and the contact form is line contact, which can effectively reduce the risk of jamming. The connection joints on the main knife side and the ground knife side are connected by a screw, so that the distance between the main knife side locking joint and the ground knife side locking joint can be adjusted, thereby increasing the fault tolerance rate. Both the locking joint and the connection joint are open structures, which facilitates the installation of the first roller and the second roller, and reserves space for adjusting the relative position between the screw and the connection joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional diagram of the utility model;
[0014] Figure 2 It is a top view of the utility model;
[0015] Figure 3 It is a rear view of the utility model;
[0016] Figure 4 is a top view of the locking disk;
[0017] Figure 5 It is the rear view of the locking disk;
[0018] Figure 6 It is the front view of the connection joint;
[0019] In the figure: 1 locking joint, 11 cylinder, 12 fixing plate, 12 positioning hole, 2 mounting bracket, 3 locking plate, 31 slot, 4 screw, 5 first roller, 5' second roller, 6 connecting joint, 61 nut, 62 clamping plate, 7 pin shaft. DETAILED DESCRIPTION
[0020] like Figures 1 to 6As shown, the utility model includes a locking joint 1, a mounting bracket 2, a locking disk 3, a screw rod 4, a connecting joint 6 and a first roller 5. The utility model is described in detail below with reference to the accompanying drawings.
[0021] like Figures 1 to 6 As shown, a swing arm type mechanical locking structure of an isolating switch includes a locking joint 1, a mounting bracket 2, a locking disk 3 and a connecting joint 6, and a mounting bracket 2, a locking disk 3, a locking joint 1 and a connecting joint 6 are provided on both the main switch side and the ground switch side of the isolating switch. Figure 4 , Figure 5 As shown, the main body of the locking disk 3 is a circular structure, and the edge of the locking disk 3 has a card slot 31, so that the edge of the locking disk 3 forms a depression. The locking disk 3 is located inside the mounting bracket 2, and the locking disk 3 located on the main knife side is fixedly connected to the vertical connecting rod on the main knife side, and the locking disk 3 located on the ground knife side is fixedly connected to the vertical connecting rod on the ground knife side. When the vertical connecting rod on the main knife side rotates, the rotation of the locking disk 3 on the main knife side can be driven. When the vertical connecting rod on the ground knife side rotates, the rotation of the locking disk 3 on the ground knife side can be driven.
[0022] like Figures 1 to 3 As shown, one end of the locking joint 1 is hingedly connected to the mounting bracket 2, one end of the connecting joint 6 is hingedly connected to the other end of the locking joint 1, the other end of the connecting joint 6 on the main knife side is threadedly connected to one end of the screw 4, and the other end of the connecting joint 5 on the ground knife side is threadedly connected to the other end of the screw 4. Specifically: Figure 1 As shown, the locking joint 1 includes a cylinder 11 and a fixing plate 12. The cylinder 11 is hingedly connected to the mounting bracket 2 through a pin 7. The fixing plates 12 are two parallel pieces. One end of the fixing plate 12 is fixedly connected to the outer wall of the cylinder 11, and the other end of the fixing plate 12 is hingedly connected to the connecting joint 6. Figure 6 As shown, the connection joint 6 includes a nut 61 and a clamping plate 62. The clamping plates 62 are two parallel pieces. The nut 61 is fixed between one end of the two clamping plates 62. The other end of the clamping plate 62 is hingedly connected to the other end of the fixing plate 12 through a pin 7. The screw rod 4 is a double-headed screw rod. Both ends of the screw rod 4 have external threads. The external threads at the ends of the screw rod 4 are threadedly connected to the nut 61 of the connection joint 6. The side wall of the cylinder 11 has a positioning hole 13. A positioning pin can be installed in the positioning hole 13. The positioning pin limits the relative rotation of the cylinder 11 and the pin 7, and ensures that the locking joint 1 is at the center of the mounting bracket 2 in the vertical direction.
[0023] like Figure 1As shown, the locking joint 1 has a first roller 5 in line contact with the locking disk 3, specifically: the first roller 5 is located between the two fixing plates 12, the first roller 5 and the fixing plate 12 are hingedly connected through a pin 7, and the first roller 5 is located outside the pin 7. A washer is provided between the first roller 5 and the lower fixing plate 12, and the washer is loosely sleeved on the pin between the first roller 5 and the fixing plate 12. The setting of the washer is used to adjust the height of the first roller 5 to ensure that the first roller 5 is at the center height position of the locking disk 3, and plays a supporting role when the locking joint 1 is deformed.
[0024] like Figure 2 As shown, when the first roller 5 on the main knife side contacts the part of the locking disk 3 except the slot 31, that is, when it contacts the arc-shaped part of the locking disk 3, the first roller 5 on the ground knife side is located in the slot 31 of the locking disk 3. At this time, the first roller 5 on the ground knife side limits the locking disk 3 on the ground knife side, and the locking disk 3 on the ground knife side cannot rotate, and the vertical connecting rod on the ground knife side cannot rotate; that is, when the vertical connecting rod on the main knife side rotates, the vertical connecting rod on the ground knife side cannot rotate. When the first roller 5 on the ground knife side contacts the part of the locking disk 3 except the slot 31, that is, when it contacts the arc-shaped part of the locking disk 3, the first roller 5 on the main knife side is located in the slot 31 of the locking disk 3. At this time, the first roller 5 on the main knife side limits the locking disk 3 on the main knife side, and the locking disk 3 on the main knife side cannot rotate, and the vertical connecting rod on the main knife side cannot rotate; that is, when the vertical connecting rod on the ground knife side rotates, the vertical connecting rod on the main knife side cannot rotate. Then, the isolating switch is locked.
[0025] A second roller 5 ′ is arranged outside the pin shaft 7 between the fixing plate 12 and the clamping plate 62 . The second roller 5 ′ supports the other end of the clamping plate 62 , thereby ensuring the stability of the distance between the other ends of the two clamping plates 62 .
[0026] like Figure 1 As shown, in the vertical direction, the locking disk 3 is located between the two clamping plates 62 and also between the two fixing plates 12, so that the locking joint 1 and the connecting joint 6 are both in an open structure. When the locking joint 1 swings relative to the mounting bracket 2 and the connecting joint 6 moves relative to the mounting bracket 2, the locking joint 1 and the connecting joint 6 with the open structure can avoid the locking disk 3, thereby avoiding motion interference between the locking joint 1 and the locking disk 3, and between the connecting joint 6 and the locking disk 3.
[0027] Among the parts of the utility model, only the first roller contacts the outer wall of the locking disk, and the contact form is line contact, which reduces the friction area and can effectively reduce the risk of jamming. The connecting joints on the main knife side and the ground knife side are connected by a screw, so that the distance between the locking joint on the main knife side and the locking joint on the ground knife side can be adjusted, thereby increasing the fault tolerance rate. Both the locking joint and the connecting joint are open structures, which are convenient for the installation of the first roller and the second roller, and reserve space for the relative position adjustment between the screw and the connecting joint. The entire locking structure adopts a modular structure design. The locking joint 1, the connecting joint 6, the first roller 5 and the mounting bracket 2 are shipped after installation, reducing the on-site installation process. The utility model is different from the mechanical locking push-pull structure in the prior art. The utility model uses the locking joint 1, the connecting joint 6, and the screw 4 to form a swing arm structure to convert the horizontal force into the rotational movement of the locking structure.
Claims
1. A swing arm type mechanical locking structure of an isolating switch, characterized in that: The main knife side and the ground knife side of the isolating switch are each provided with a mounting bracket, a locking disk, a locking joint and a connecting joint, wherein the locking disk is located on the inner side of the mounting bracket, the locking disk located on the main knife side is fixedly connected to the vertical connecting rod on the main knife side, the locking disk located on the ground knife side is fixedly connected to the vertical connecting rod on the ground knife side, one end of the locking joint is hingedly connected to the mounting bracket, one end of the connecting joint is hingedly connected to the other end of the locking joint, the other end of the connecting joint located on the main knife side is threadedly connected to one end of the screw, and the other end of the connecting joint located on the ground knife side is threadedly connected to the other end of the screw; the edge of the locking disk is provided with a slot, and the locking joint is provided with a first roller in line contact with the locking disk; when the first roller on the main knife side contacts the portion of the locking disk other than the slot, the first roller on the ground knife side is located in the slot of the locking disk; when the first roller on the ground knife side contacts the portion of the locking disk other than the slot, the first roller on the main knife side is located in the slot of the locking disk.
2. The isolating switch swing arm type mechanical locking structure according to claim 1 is characterized in that: The locking joint includes a cylinder and a fixing plate, wherein the cylinder is hingedly connected to the mounting bracket, and the fixing plates are two parallelly arranged plates, one end of the fixing plate is fixedly connected to the outer wall of the cylinder, and the other end of the fixing plate is hingedly connected to the connecting joint.
3. The isolating switch swing arm type mechanical locking structure according to claim 2 is characterized in that: The first roller is located between the two fixing plates.
4. The isolating switch swing arm type mechanical locking structure according to claim 3 is characterized in that: The side wall of the cylinder is provided with a positioning hole, and a positioning pin is provided in the positioning hole. One end of the positioning pin extends into the pin shaft of the cylinder and the mounting bracket.
5. The isolating switch swing arm type mechanical locking structure according to claim 4, characterized in that: The connecting joint comprises a nut and a clamping plate, wherein the clamping plates are two parallel pieces, the nut is fixed between one ends of the two clamping plates, and the other end of the clamping plate is hingedly connected to the other end of the fixing plate.
6. The isolating switch swing arm type mechanical locking structure according to claim 5, characterized in that: The cylinder and the mounting bracket, the first roller and the fixed plate, and the fixed plate and the clamping plate are all connected through a pin hinge, and a second roller is arranged outside the pin between the fixed plate and the clamping plate.
7. The isolating switch swing arm type mechanical locking structure according to claim 3, characterized in that: A washer is provided between the first roller and the lower fixing plate and is loosely sleeved on the pin shaft.
8. The isolating switch swing arm type mechanical locking structure according to claim 5, characterized in that: In the vertical direction, the locking plate is located between the two clamping plates and also between the two fixing plates, so that the locking joint and the connecting joint are both in an open structure.