An energy storage spring operating mechanism for a disconnecting switch

Abstract

This utility model discloses an energy storage spring operating mechanism for a disconnecting switch, belonging to the field of disconnecting switches. The energy storage spring operating mechanism of this utility model includes a base, a fixed frame mounted on the base, a spring body sleeved inside the fixed frame, a push-pull mechanism on the base, a connecting plate on the push-pull mechanism, two connecting shafts mounted on the connecting plate, connecting rods rotatably connected to the outer sides of the connecting shafts, and a support rod rotatably connected to the end of the connecting rod. The support rod is rotatably connected to the fixed frame, and its side is in contact with the spring body. A transmission mechanism is provided on the base to drive the push-pull mechanism to move laterally. This utility model solves the problem of uneven spring force caused by the single-point traction structure in existing energy storage spring operating mechanisms. By adopting a double-point traction structure, this utility model can significantly improve the uniformity of spring force and avoid the stress concentration problem caused by the traditional single-point traction method.

Description

Technical Field

[0001] This utility model relates to the field of disconnect switches, specifically to an energy storage spring operating mechanism for a disconnect switch. Background Technology

[0002] When repairing electrical equipment, it is necessary to disconnect the power supply to isolate the repaired part from the live part and maintain an effective isolation distance. This requires the use of a low-voltage disconnect switch. When the operator moves the handle to open or close the low-voltage disconnect switch, the manual operating shaft will rotate under the action of the handle, which will drive the operating rod to rotate accordingly. Then, the switch contact actuator will drive the contacts on the switch contact mechanism to open or close. According to the search, Chinese patent document, publication number CN213988714U, discloses an energy storage spring operating mechanism for a low-voltage disconnector, including an operating shaft, a lever, an upper connecting rod, an energy storage spring, a first clamping plate, a second clamping plate, a first needle roller, a second needle roller, a washer, and a lower connecting rod. The first clamping plate, the upper connecting rod, and the second clamping plate are respectively sleeved around the operating shaft. A lever is installed at one end of the operating shaft. The upper end of the lower connecting rod is sleeved around the second needle roller, and the lower end of the lower connecting rod is sleeved around the first needle roller. An energy storage spring is installed around the lower connecting rod, and both ends of the energy storage spring are fixedly connected to the outer periphery of the lower connecting rod through a washer. The energy storage spring operating mechanism of the low-voltage disconnecting switch described in this utility model allows the contacts to open and close quickly without affecting the speed of the operator's operation. This prevents the disconnecting switch contacts from burning out. The energy storage spring operating mechanism has a reasonable, simple, and low-cost structural design. However, this utility model uses a single-point tensioning method for the spring during use, which may cause the spring to bend and deform due to uneven stress after long-term use.

[0003] In summary, to improve the long-term stability and reliability of the disconnector switch energy storage spring operating mechanism, it is necessary to solve the problem of uneven spring force caused by the single-point traction structure, so that the spring can bear the load evenly during repeated compression and release, avoiding bending deformation or fatigue fracture caused by stress concentration, thereby ensuring accurate mechanism operation, extending service life, and maintaining stable opening and closing performance. Summary of the Invention

[0004] The purpose of this utility model is to provide an energy storage spring operating mechanism for a disconnecting switch. By adopting a two-point traction structure, the uniformity of the spring force can be improved, and deformation of the spring after long-term use can be avoided, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy storage spring operating mechanism for a disconnecting switch, comprising a base, a fixed frame mounted on the base, a spring body sleeved on the inner side of the fixed frame, a push-pull mechanism provided on the base, a connecting plate provided on the push-pull mechanism, two connecting shafts mounted on the connecting plate, a connecting rod rotatably connected to the outer side of the connecting shaft, a support rod rotatably connected to the end of the connecting rod, the support rod rotatably connected to the fixed frame, the side of the support rod fitting against the spring body, and a transmission mechanism provided on the base for driving the push-pull mechanism to move laterally.

[0006] Preferably, the push-pull mechanism includes a sliding component and a driving component disposed on the base. The driving component is used to drive the sliding component to move laterally along the surface of the base, and the sliding component is used to drive the connecting plate to move.

[0007] Preferably, the sliding assembly includes two positioning seats fixed on the base and a rack disposed between the two positioning seats. The rack is fixedly connected to the connecting plate and slidably connected to the base.

[0008] Preferably, the drive assembly includes a mounting base fixed on the base, a rotating shaft disposed on the mounting base, and a gear fixed at the end of the rotating shaft. The rotating shaft is rotatably connected to the mounting base, and the gear meshes with a rack.

[0009] Preferably, the transmission mechanism includes a rotating component mounted on the base, a locking component mounted on the rotating component, and a pulling component mounted on the rotating component. The rotating component is used to drive the pulling component to rotate, the pulling component is used to drive the rotating shaft to rotate, and the locking component is used to prevent the rotating component from rotating back.

[0010] Preferably, the rotating assembly includes a bearing mounted on a base, a rotating seat mounted inside the bearing, and a rotating arm mounted on the rotating seat, the rotating arm being used to drive the rotating seat to rotate.

[0011] Preferably, the locking assembly includes a fixing ring fixed to the inner side of the base, a connector mounted on the rotating seat, a ratchet groove formed on the inner side of the fixing ring, and ratchet teeth mounted on the outer side of the connector, wherein the ratchet teeth are adapted to the ratchet groove.

[0012] Preferably, the traction assembly includes a mounting shaft eccentrically disposed on the connector head, a traction rod rotatably connected to the mounting shaft, and a connecting piece fixed to the outside of the rotating shaft, wherein the mounting shaft and the connecting piece are rotatably connected.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, by employing a dual-point traction structure, significantly improves the uniformity of spring force, avoiding the stress concentration problem caused by traditional single-point traction methods. This symmetrical design allows the spring to bear load simultaneously on both sides during compression and release, effectively dispersing mechanical load and greatly reducing the risk of local fatigue. After long-term operation, the spring can still maintain its original linear deformation characteristics and is not prone to torsion or plastic deformation, thereby maintaining stable energy storage efficiency and operating accuracy. At the same time, the dual-point support structure can reduce frictional losses between the spring and transmission components, further extending the service life of key components and ensuring that the disconnecting switch can still reliably complete opening and closing actions under frequent operation, thus improving the overall operational stability of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the connecting plate of this utility model; Figure 3 This is a three-dimensional structural diagram of the bracket of this utility model; Figure 4 This is a three-dimensional structural diagram of the transmission mechanism of this utility model; Figure 5 This is a three-dimensional structural diagram of the present invention viewed from below.

[0015] In the diagram: 1. Base; 2. Fixing frame; 3. Spring body; 41. Positioning seat; 42. Rack; 43. Mounting seat; 44. Rotating shaft; 45. Gear missing; 5. Connecting plate; 6. Connecting shaft; 7. Connecting rod; 8. Support rod; 91. Bearing; 92. Rotating seat; 93. Rotating arm; 94. Fixing ring; 95. Connector; 96. Mounting shaft; 97. Traction rod; 98. Connecting piece. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] Refer to the instruction manual appendix Figures 1 to 5 An energy storage spring operating mechanism for a disconnecting switch includes a base 1, a fixed frame 2 mounted on the base 1, a spring body 3 sleeved on the inner side of the fixed frame 2, a push-pull mechanism on the base 1, a connecting plate 5 on the push-pull mechanism, two connecting shafts 6 mounted on the connecting plate 5, a connecting rod 7 rotatably connected to the outer side of the connecting shaft 6, a support rod 8 rotatably connected to the end of the connecting rod 7, the support rod 8 rotatably connected to the fixed frame 2, the side of the support rod 8 fitting against the spring body 3, and a transmission mechanism on the base 1 for driving the push-pull mechanism to move laterally.

[0018] It should be noted that when the connecting plate 5 is driven to move by the push-pull mechanism, the two connecting shafts 6 drive the corresponding connecting rods 7 to move, which in turn drives the two support rods 8 to expand or contract around their rotation point with the fixed frame 2. When the support rods 8 expand, their sides evenly press the spring body 3 to achieve compression and energy storage of the spring. When they contract, the spring energy is released. This dual-point traction structure significantly improves the uniformity of the spring force.

[0019] Refer to the instruction manual appendix Figures 1 to 4 The push-pull mechanism includes a sliding component and a driving component disposed on the base 1. The driving component is used to drive the sliding component to move laterally along the surface of the base 1, and the sliding component is used to drive the connecting plate 5 to move.

[0020] It should be noted that the function of the push-pull mechanism is to transmit the power of the drive component and convert it into the linear motion of the sliding component, thereby driving the support rod 8 to move through the connecting plate 5.

[0021] Refer to the instruction manual appendix Figures 1 to 4 The sliding assembly includes two positioning seats 41 fixed on the base 1 and a rack 42 disposed between the two positioning seats 41. The rack 42 is fixedly connected to the connecting plate 5 and slidably connected to the base 1.

[0022] It should be noted that the main function of the sliding component is to support and guide the rack 42 and the connecting plate 5 fixed thereto to make stable linear motion in a predetermined direction.

[0023] Refer to the instruction manual appendix Figures 1 to 4 The drive assembly includes a mounting base 43 fixed on the base 1, a rotating shaft 44 disposed on the mounting base 43, and a gear 45 fixed at the end of the rotating shaft 44. The rotating shaft 44 is rotatably connected to the mounting base 43, and the gear 45 meshes with the rack 42.

[0024] It should be noted that the function of the drive component is to transmit rotational power to the gear 45, and through meshing with the rack 42, convert the rotational motion into the linear motion of the rack 42, thereby driving the sliding component.

[0025] Refer to the instruction manual appendix Figure 1 , Figure 2 and Figure 4 The transmission mechanism includes a rotating component mounted on the base 1, a locking component mounted on the rotating component, and a pulling component mounted on the rotating component. The rotating component is used to drive the pulling component to rotate, the pulling component is used to drive the rotating shaft 44 to rotate, and the locking component is used to prevent the rotating component from rotating back.

[0026] It should be noted that the rotating component drives the traction component to move, which in turn drives the rotating shaft 44 of the drive component to rotate, and the locking component ensures the unidirectionality of the action.

[0027] Refer to the instruction manual appendix Figure 1 , Figure 2 and Figure 4 The rotating assembly includes a bearing 91 mounted on a base 1, a rotating seat 92 mounted inside the bearing 91, and a rotating arm 93 mounted on the rotating seat 92. The rotating arm 93 is used to drive the rotating seat 92 to rotate.

[0028] It should be noted that the function of the rotating component is to provide rotational support and to receive operating force through the rotating arm 93 to rotate the entire component around the axis.

[0029] Refer to the instruction manual appendix Figure 2 and Figure 4 The locking assembly includes a retaining ring 94 fixed inside the base 1, a connector 95 mounted on the rotating seat 92, a ratchet groove inside the retaining ring 94, and ratchet teeth mounted outside the connector 95, with the ratchet teeth and ratchet grooves being compatible.

[0030] It should be noted that the function of the locking component is to use the cooperation of ratchet teeth and ratchet grooves to allow the rotating component to rotate freely in one direction, but prevent it from rotating in the opposite direction, thereby locking the action position.

[0031] Refer to the instruction manual appendix Figure 2 and Figure 4 Figure 2 Figure 4 The traction assembly includes a mounting shaft 96 eccentrically mounted on the connector 95, a traction rod 97 rotatably connected to the mounting shaft 96, and a connecting piece 98 fixed to the outside of the rotating shaft 44. The mounting shaft 96 and the connecting piece 98 are rotatably connected.

[0032] It should be noted that the function of the traction component is to convert the rotational motion of the rotating component into the rotational motion of the drive component shaft 44. When the rotating component rotates, the eccentrically set mounting shaft 96 drives the traction rod 97 to move, which in turn pulls the shaft 44 to rotate through the connecting piece 98.

[0033] Working principle: During operation, the rotating arm 93 is manually driven to rotate, which drives the rotating seat 92 to rotate within the bearing 91. The connector 95 on the rotating seat 92 rotates synchronously, and its eccentrically set mounting shaft 96 pulls the traction rod 97 to move. The traction rod 97 pulls the rotating shaft 44 to rotate within the mounting seat 43 through the connecting piece 98. The missing gear 45 at the end of the rotating shaft 44 rotates accordingly, pushing the rack 42 that meshes with it to slide laterally along the base 1. The rack 42 drives the connecting plate 5 to move synchronously, causing the two connecting shafts 6 fixed on the connecting plate 5 to push the corresponding connecting rod 7 to move. The connecting rod 7 drives the support rod 8 to expand in opposite directions around its rotation point with the fixed frame 2. Its side evenly presses the spring body 3 to store energy. After the rotating arm 93 continues to rotate, the missing gear 45 disengages from the rack 42, and the spring body 3 rebounds to release elastic potential energy.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An energy storage spring operating mechanism for a disconnecting switch, comprising a base (1), characterized in that, A fixed frame (2) is installed on the base (1). A spring body (3) is sleeved on the inner side of the fixed frame (2). A push-pull mechanism is provided on the base (1). A connecting plate (5) is provided on the push-pull mechanism. Two connecting shafts (6) are installed on the connecting plate (5). A connecting rod (7) is rotatably connected to the outer side of the connecting shaft (6). A support rod (8) is rotatably connected to the end of the connecting rod (7). The support rod (8) is rotatably connected to the fixed frame (2). The side of the support rod (8) is in contact with the spring body (3). A transmission mechanism is provided on the base (1). The transmission mechanism is used to drive the push-pull mechanism to move laterally.

2. An energy-storing spring operating mechanism of a disconnector according to claim 1, characterized in that The push-pull mechanism includes a sliding component and a driving component disposed on the base (1). The driving component is used to drive the sliding component to move laterally along the surface of the base (1), and the sliding component is used to drive the connecting plate (5) to move.

3. An energy-storing spring operating mechanism of a disconnector according to claim 2, characterized in that The sliding assembly includes two positioning seats (41) fixed on the base (1) and a rack (42) disposed between the two positioning seats (41). The rack (42) is fixedly connected to the connecting plate (5) and slidably connected to the base (1).

4. An energy-storing spring operating mechanism of a disconnector according to claim 3, characterized in that The drive assembly includes a mounting base (43) fixed on the base (1), a rotating shaft (44) disposed on the mounting base (43), and a gear (45) fixed at the end of the rotating shaft (44). The rotating shaft (44) is rotatably connected to the mounting base (43), and the gear (45) meshes with the rack (42).

5. The energy storage spring operating mechanism of a disconnecting switch according to claim 4, characterized in that, The transmission mechanism includes a rotating component mounted on the base (1), a locking component mounted on the rotating component, and a pulling component mounted on the rotating component. The rotating component is used to drive the pulling component to rotate, the pulling component is used to drive the rotating shaft (44) to rotate, and the locking component is used to prevent the rotating component from rotating back.

6. An energy-storing spring operating mechanism of a disconnector according to claim 5, characterized in that The rotating assembly includes a bearing (91) mounted on a base (1), a rotating seat (92) mounted inside the bearing (91), and a rotating arm (93) mounted on the rotating seat (92). The rotating arm (93) is used to drive the rotating seat (92) to rotate.

7. An energy-storing spring operating mechanism of a disconnector according to claim 6, characterized in that The locking assembly includes a retaining ring (94) fixed inside the base (1), a connector (95) mounted on the rotating seat (92), a ratchet groove opened inside the retaining ring (94), and ratchet teeth mounted outside the connector (95), the ratchet teeth being adapted to the ratchet groove.

8. An energy-storing spring operating mechanism of a disconnector according to claim 7, characterized in that The traction assembly includes a mounting shaft (96) eccentrically mounted on the connector (95), a traction rod (97) rotatably connected to the mounting shaft (96), and a connecting piece (98) fixed to the outside of the rotating shaft (44). The mounting shaft (96) and the connecting piece (98) are rotatably connected.

Images