Intelligent power switch cabinet

Abstract

The invention belongs to the technical field of switch cabinets, and discloses an intelligent power switch cabinet which comprises a switch cabinet body, a support and a circuit breaker, the bottom of the circuit breaker is provided with a supporting plate, the circuit breaker is slidably mounted on the support, the intelligent power switch cabinet further comprises a hand-push force storage mechanism arranged on the support and a lock catch mechanism used for locking the supporting plate in an initial state; two protruding blocks are arranged at the bottom of the supporting plate. According to the scheme, the lead screw is rotated to push the main sliding block to move, the movement of the main sliding block can drive one auxiliary sliding block to move, the tension piece is stretched to store force, after the tension piece reaches a preset position, locking of the supporting plate is relieved through the lock catch mechanism, and at the moment, the supporting plate and the circuit breaker above the supporting plate can be rapidly pulled to move under the action of the elastic force of the tension piece; and finally, the circuit breaker quickly moves to a working position from a testing position, so that the problem that arc discharge is caused when a moving contact and a static contact approach to each other due to the fact that the moving speed of a handcart driven by manually rotating a screw rod is low is solved.

Description

Technical Field

[0001] This invention belongs to the field of switchgear technology, specifically an intelligent power switchgear. Background Technology

[0002] Power switchgear, also known as distribution cabinet, is a complete set of electrical equipment in a power system used to ensure the safe and efficient transmission, distribution, and use of electricity. Intelligent power switchgear, based on traditional switchgear, integrates intelligent monitoring and communication units, enabling real-time reporting of the status of each component within the switchgear.

[0003] The PT trolley is an important component in the switchgear. Operators can move the PT trolley from the "working position" to the "test position" or pull it completely out of the cabinet for easy maintenance or debugging. After maintenance or debugging, the operator will rotate the lead screw to push the PT trolley from the "test position" to the "working position," thereby enabling the moving contacts on the trolley to engage with the stationary contacts on the cabinet.

[0004] However, due to the short pitch of the lead screw, the moving contact of the equipment on the handcart moves too slowly when it approaches the stationary contact, which prolongs the operation time. It can also cause arcing due to insufficient speed in the final stage of contact approach, damaging the contact surface and ultimately affecting the reliability of the electrical connection.

[0005] Therefore, to solve the above problems, an intelligent power switch cabinet is proposed. Summary of the Invention

[0006] To address the problems mentioned in the background section, this invention provides an intelligent power switchgear that solves the problem that the slow movement speed of the handcart driven by manually rotating the lead screw can cause arc discharge when the moving and stationary contacts approach each other.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an intelligent power switchgear, comprising a switchgear body, a support, and a circuit breaker, wherein the bottom of the circuit breaker is a support plate and is slidably mounted on the support, and further comprising: a hand-push power storage mechanism disposed on the support and a locking mechanism for locking the support plate in the initial state; wherein, two protrusions are provided on the bottom of the support plate; The hand-push power storage mechanism includes a lead screw rotatably connected to the middle of the support, a set of limiting rods fixedly connected to the support, a main slider threaded on the lead screw, the two ends of the main slider being movably sleeved on the two limiting rods respectively, a tension member fixedly connected to the protrusion, the other end of the tension member passing over the main slider and fixedly connected to a secondary slider, the secondary slider also being movably sleeved on the limiting rods; The two protrusions are located on different sides of the main slider, and the secondary slider abuts against the main slider in the initial state.

[0008] Preferably, the locking mechanism includes two plates fixedly installed symmetrically on one side of the support. Several slots are equally spaced on the plates. A top block that can block the slots is movably installed inside the plates. A frame is fixedly connected to the bottom of the support plate. Tension spring combination inclined blocks that can be locked in the slots are movably installed at both ends of the frame. The inclined surfaces of the two tension spring combination inclined blocks face away from each other. A push-pull assembly for controlling the individual movement of the two sets of top blocks is also installed on the other side of the support.

[0009] Preferably, the bottom of the plate is provided with a straight groove, and the top block is fixed with a convex shaft that can pass through the straight groove; The push-pull assembly includes a tension spring assembly rod hinged in the support, a connecting rod hinged in the middle of the tension spring assembly rod, and the other end of the connecting rod hinged to a convex shaft in a diagonal direction. A contact wheel is rotatably connected to one end of the tension spring assembly rod. In the initial state, the contact wheel overlaps with the main slider in the direction of movement of the main slider; Furthermore, when the main slider moves and presses against the contact wheel to rotate the frame, it can pull the top block through the connecting rod to seal the corresponding bayonet.

[0010] Preferably, the distance between the two tension spring combination oblique blocks is greater than the length of the plate.

[0011] Preferably, a housing is fixedly connected to the bottom of the pallet, and a spring combination stop bar is movably installed inside the housing; An inclined plate is fixedly connected to one side of the support, and in the initial state, the spring combination stop rod is subjected to its own elastic force so that one end of it overlaps with the inclined plate in the direction of travel. Initially, the direction of travel of the secondary slider is misaligned with one end of the spring combination stop. When one end of the spring combination stop comes into contact with the inclined plate, the other end can extend outward and block the front of the secondary slider.

[0012] Preferably, the spring combination stop bar is provided with a ball bearing at one end near the support.

[0013] Preferably, the secondary slider is also equipped with a shock-absorbing mechanism for protecting the pallet after rapid movement.

[0014] Preferably, the shock absorption mechanism includes a sleeve rod with one end fixedly sleeved inside the auxiliary slider. The sleeve rod has several air holes equidistantly opened on it, which can communicate with the sleeve rod cavity. The sleeve rod also has an air hole at the end. One end of the protrusion is fixedly connected to a piston rod, and one end of the piston rod can be sleeved inside the sleeve rod. The end of the sleeve rod facing the piston rod is provided with a flared opening.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The above solution uses a rotating lead screw to push the main slider to move under the action of a limit rod. The movement of the main slider will drive one of the auxiliary sliders to move, and the tensioning component will be stretched and stored. When the tensioning component reaches the predetermined position, the locking mechanism will release the locking of the tray. At this time, under the action of the elastic force of the tensioning component, the tray and the circuit breaker above it will be pulled quickly, and the circuit breaker will be moved quickly from the "test position" to the "working position". This solves the problem that the slow movement speed of the handcart driven by manually rotating the lead screw will cause arc discharge when the moving and stationary contacts approach each other. The above solution moves the housing and spring combination stop rod during the movement of the pallet. When one end of the spring combination stop rod contacts the inclined plate and moves along its surface, the inclined part on the inclined plate will push the other end of the spring combination stop rod to extend and block in front of the auxiliary slider. After the circuit breaker moves to the "working position", the operator can continue to rotate the screw to drive the main slider to move. The main slider will directly drive the pallet to move through the spring combination stop rod, thereby achieving rapid installation and further stable advancement of the device. In the above scheme, when the main slider pushes the secondary slider to move and the support plate is in a locked state, the movement of the secondary slider will cause the second air hole to move and disengage from the piston rod. When the support plate is unlocked and rapidly advanced, the support plate and the protrusion will drive the piston rod to quickly enter the sleeve rod. As the piston rod enters, the portion of the gas sealed inside the sleeve rod that can communicate with the outside through the first air hole gradually decreases, thereby gradually increasing the pushing resistance of the piston rod. At the same time, in conjunction with the damping effect formed by the piston end of the piston rod and the inner wall of the sleeve rod, the rapidly advancing support plate is damped and buffered. Attached Figure Description

[0016] Figure 1 This is a side perspective view of the present invention assembled on the switch cabinet body; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram showing the disassembled structure of the switch cabinet body and the support of the present invention; Figure 4 This is a schematic diagram of the hand-push power storage mechanism of the present invention; Figure 5 This is a top view schematic diagram of the support structure of the present invention; Figure 6 This is a schematic diagram of the locking mechanism of the present invention; Figure 7 This is a top sectional view of the plate structure of the present invention; Figure 8 This is a bottom view schematic diagram of the hand-push power storage mechanism of the present invention; Figure 9 for Figure 8 Enlarged view of point A in the middle; Figure 10 This is a schematic diagram of the disassembled structure of the shock absorption mechanism of the present invention.

[0017] In the diagram: 1. Switch cabinet body; 2. Support; 21. Inclined plate; 3. Circuit breaker; 31. Support plate; 32. Protrusion; 33. Housing; 4. Hand-push accumulator mechanism; 41. Lead screw; 42. Limiting rod; 43. Main slider; 44. Pulling component; 45. Secondary slider; 5. Locking mechanism; 51. Frame; 52. Tension spring combination inclined block; 53. Plate; 531. Bayonet; 532. Straight slot; 54. Top block; 541. Protruding shaft; 55. Push-pull assembly; 551. Tension spring combination rod; 552. Connecting rod; 553. Contact wheel; 6. Spring combination stop rod; 7. Shock absorption mechanism; 71. Sleeve rod; 72. Air hole one; 73. Air hole two; 74. Piston rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 10 As shown, the present invention provides an intelligent power switch cabinet, including a switch cabinet body 1, a support 2 and a circuit breaker 3. The bottom of the circuit breaker 3 is a support plate 31 and is slidably mounted on the support 2. The switch cabinet also includes a hand-push power storage mechanism 4 disposed on the support 2 and a locking mechanism 5 for locking the support plate 31 in the initial state. The support plate 31 has two protrusions 32 at its bottom. The hand-push power storage mechanism 4 includes a lead screw 41 rotatably connected to the middle of the support 2. A set of limiting rods 42 are fixedly connected to the support 2. A main slider 43 is threaded on the lead screw 41. The two ends of the main slider 43 are movably sleeved on the two limiting rods 42 respectively. A tension member 44 is fixedly connected to the protrusion 32. The other end of the tension member 44 passes over the main slider 43 and is fixedly connected to a secondary slider 45. The secondary slider 45 is also movably sleeved on the limiting rods 42. The two protrusions 32 are located on different sides of the main slider 43, and the secondary slider 45 abuts against the main slider 43 in the initial state. The locking mechanism 5 includes two plates 53 fixedly installed symmetrically on one side of the support 2. Several slots 531 are equally spaced on the plates 53. A top block 54 that can block the slots 531 is movably installed inside the plates 53. A frame 51 is fixedly connected to the bottom of the support plate 31. Tension spring combination inclined blocks 52 that can be locked in the slots 531 are movably installed at both ends of the frame 51. The inclined surfaces of the two tension spring combination inclined blocks 52 face away from each other. On the other side of the support 2, a push-pull assembly 55 for controlling the individual movement of the two sets of top blocks 54 is also installed; a straight groove 532 is opened at the bottom of the plate 53, and a convex shaft 541 that can pass through the straight groove 532 is fixed on the top block 54. The push-pull assembly 55 includes a tension spring assembly rod 551 hinged in the support 2. A connecting rod 552 is hinged in the middle of the tension spring assembly rod 551, and the other end of the connecting rod 552 is hinged to a convex shaft 541 in a diagonal direction. A contact wheel 553 is rotatably connected to one end of the tension spring assembly rod 551. In the initial state, the contact wheel 553 overlaps with the main slider 43 in the direction of movement of the main slider 43; and when the main slider 43 moves and squeezes the contact wheel 553 to make the frame 51 rotate, it can pull the top block 54 through the connecting rod 552 to block the corresponding slot 531. The distance between the two tension spring combination oblique blocks 52 is greater than the length of the plate 53.

[0020] Using the above scheme, the tension spring combination inclined block 52 at one end of the frame 51 is locked in the slot 531, at which time the support plate 31 is in a locked state. Then, by rotating the screw 41 with a wrench and under the action of the limit rod 42, the main slider 43 is pushed to move. The movement of the main slider 43 will drive one of the auxiliary sliders 45 to move, and the tension member 44 will be stretched and stored. At the same time, the movement of the main slider 43 will also release the compression of the contact wheel 553 at this position, so that the tension spring combination rod 551 is reset by its own elastic force and pushes the tension spring combination rod 551 and the corresponding top block 54 to contact and block the slot 531. At the same time, the top block 54 will also push the tension spring combination inclined block 52 out to disengage it from the slot 531. At this time, under the action of the elastic force of the tension member 44, the support plate 31 and the circuit breaker 3 above it will be pulled quickly to move, and finally the circuit breaker 3 will move quickly from the "test position" to the "working position".

[0021] Meanwhile, another set of tension spring combination inclined block 52 will move along the teeth and lock into another set of bayonet slots 531 to achieve one-way locking of the tray 31; It is worth noting that the height of the bottom surface of the protrusion 32 is lower than the height of the upper surface of the end of the main slider 43.

[0022] like Figures 1-5 , Figure 8 and Figure 9 As shown, a housing 33 is fixedly connected to the bottom of the support plate 31, and a spring combination stop bar 6 is movably installed inside the housing 33; An inclined plate 21 is fixedly connected to one side of the support 2, and in the initial state, the spring combination stop rod 6 is subjected to its own elastic force so that one end of it overlaps with the inclined plate 21 in the direction of travel; Initially, the direction of travel of the secondary slider 45 is misaligned with one end of the spring combination stop rod 6. When one end of the spring combination stop rod 6 abuts against the inclined plate 21, the other end can extend outward and block the front of the secondary slider 45. A ball bearing is provided at the end of the spring combination stop rod 6 near the support 2. Using the above scheme, as the pallet 31 moves, it also drives the housing 33 and the spring combination stop rod 6 to move. When one end of the spring combination stop rod 6 contacts the inclined plate 21 and moves along its surface, the inclined part on the inclined plate 21 will push the other end of the spring combination stop rod 6 to extend and block it in front of the auxiliary slider 45. After the circuit breaker 3 moves to the "working position", the operator can continue to rotate the screw 41 to drive the main slider 43 to move. The main slider 43 will directly drive the pallet 31 to move through the spring combination stop rod 6, thereby achieving rapid installation and further stable advancement of the device.

[0023] like Figures 8-10 As shown, the auxiliary slider 45 is also equipped with a shock-absorbing mechanism 7 for protecting the pallet 31 after rapid movement; The shock absorption mechanism 7 includes a sleeve rod 71 with one end fixedly sleeved in the auxiliary slider 45. The sleeve rod 71 has several air holes 72 that can communicate with the cavity of the sleeve rod 71 at equal intervals. The end of the sleeve rod 71 also has an air hole 73. One end of the protrusion 32 is fixedly connected to a piston rod 74. One end of the piston rod 74 can be sleeved in the sleeve rod 71. The end of the sleeve rod 71 facing the piston rod 74 is provided with a flared opening. Using the above scheme, when the main slider 43 pushes the secondary slider 45 to move and the support plate 31 is in a locked state, the movement of the secondary slider 45 will cause the second air hole 73 to move and disengage from the piston rod 74. When the support plate 31 is unlocked and rapidly advanced, the support plate 31 and the protrusion 32 will drive the piston rod 74 to quickly enter the sleeve rod 71. As the piston rod 74 enters, the portion of the gas sealed inside the sleeve rod 71 that can communicate with the outside through the first air hole 72 gradually decreases, thereby gradually increasing the pushing resistance of the piston rod 74. At the same time, in conjunction with the damping effect formed by the piston end of the piston rod 74 and the inner wall of the sleeve rod 71, the rapidly advancing support plate 31 is damped and buffered.

[0024] Working principle and usage process of this invention: First, place the device into the switch cabinet body 1, and after closing the cabinet door, expose one end of the lead screw 41 through the pre-drilled hole on the cabinet door. Since the tension spring combination inclined block 52 at one end of the frame 51 is locked in the slot 531, the support plate 31 is in a locked state. Then, by rotating the screw 41 with a wrench and under the action of the limit rod 42, the main slider 43 is pushed to move. The movement of the main slider 43 will drive one of the auxiliary sliders 45 to move, and the tension member 44 will be stretched and stored. At the same time, the movement of the main slider 43 will also release the compression of the contact wheel 553 at this position, so that the tension spring combination rod 551 is reset by its own elastic force and pushes the tension spring combination rod 551 and the corresponding top block 54 to contact and block the slot 531. At the same time, the top block 54 will also push the tension spring combination inclined block 52 out to disengage it from the slot 531. At this time, under the action of the elastic force of the tension member 44, the support plate 31 and the circuit breaker 3 above it will be pulled to move quickly, and finally the circuit breaker 3 will move quickly from the "test position" to the "working position". Meanwhile, another set of tension spring combination inclined block 52 will move along the teeth and lock into another set of bayonet slots 531 to achieve one-way locking of the tray 31.

[0025] During the movement of the pallet 31, the housing 33 and the spring combination stop rod 6 will also move. When one end of the spring combination stop rod 6 contacts the inclined plate 21 and moves along its surface, the inclined part on the inclined plate 21 will push the other end of the spring combination stop rod 6 to extend and block in front of the auxiliary slider 45. After the circuit breaker 3 moves to the "working position", the operator can continue to rotate the screw 41 to drive the main slider 43 to move. The main slider 43 will directly drive the pallet 31 to move through the spring combination stop rod 6, thereby achieving rapid installation and further stable advancement of the device. When the main slider 43 pushes the secondary slider 45 to move and the support plate 31 is in the locked state, the movement of the secondary slider 45 will cause the second air hole 73 to move and disengage from the piston rod 74. When the support plate 31 is unlocked and rapidly advanced, the support plate 31 and the protrusion 32 will drive the piston rod 74 to quickly enter the sleeve rod 71. As the piston rod 74 enters, the portion of the gas sealed inside the sleeve rod 71 that can communicate with the outside through the first air hole 72 gradually decreases, thereby gradually increasing the pushing resistance of the piston rod 74. At the same time, in conjunction with the damping effect formed by the piston end of the piston rod 74 and the inner wall of the sleeve rod 71, the rapidly advancing support plate 31 is damped and buffered.

[0026] 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.

[0027] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent power switchgear, comprising a switchgear body (1), a support (2), and a circuit breaker (3), wherein the bottom of the circuit breaker (3) is a support plate (31) and is slidably mounted on the support (2), characterized in that, Also includes: The hand-push power storage mechanism (4) and the locking mechanism (5) for locking the tray (31) in the initial state are provided on the support (2). Among them, the bottom of the tray (31) is provided with two protrusions (32); The hand-push power storage mechanism (4) includes a lead screw (41) rotatably connected to the middle of the support (2), a set of limiting rods (42) fixedly connected to the support (2), a main slider (43) threaded on the lead screw (41), the two ends of the main slider (43) being movably sleeved on the two limiting rods (42), a tension member (44) fixedly connected to the protrusion (32), the other end of the tension member (44) passing over the main slider (43) and fixedly connected to a secondary slider (45), the secondary slider (45) also being movably sleeved on the limiting rods (42); The two protrusions (32) are located on different sides of the main slider (43), and the secondary slider (45) abuts against the main slider (43) in the initial state.

2. The intelligent power switchgear according to claim 1, characterized in that: The locking mechanism (5) includes two plates (53) fixedly installed symmetrically on one side of the support (2). Several slots (531) are equally spaced on the plates (53). A top block (54) that can block the slots (531) is movably installed inside the plates (53). A frame (51) is fixedly connected to the bottom of the support plate (31). Tension spring combination inclined blocks (52) that can be locked in the slots (531) are movably installed at both ends of the frame (51). The inclined surfaces of the two tension spring combination inclined blocks (52) face away from each other. A push-pull assembly (55) for controlling the individual movement of the two sets of top blocks (54) is also installed on the other side of the support (2).

3. The intelligent power switchgear according to claim 2, characterized in that: The bottom of the plate (53) is provided with a straight groove (532), and the top block (54) is fixed with a convex shaft (541) that can pass through the straight groove (532). The push-pull assembly (55) includes a tension spring assembly rod (551) hinged in the support (2), a connecting rod (552) is hinged in the middle of the tension spring assembly rod (551), and the other end of the connecting rod (552) is hinged to a convex shaft (541) in a diagonal direction. A contact wheel (553) is rotatably connected to one end of the tension spring assembly rod (551). In the initial state, the contact wheel (553) overlaps with the main slider (43) in the direction of movement of the main slider (43); When the main slider (43) moves and squeezes the contact wheel (553) to make the frame (51) rotate, it can pull the top block (54) through the connecting rod (552) to block the corresponding bayonet (531).

4. The intelligent power switchgear according to claim 2, characterized in that: The distance between the two tension spring combination oblique blocks (52) is greater than the length of the plate (53).

5. The intelligent power switchgear according to claim 1, characterized in that: The bottom of the tray (31) is fixedly connected to a housing (33), and a spring combination stop bar (6) is movably installed inside the housing (33). An inclined plate (21) is fixedly connected to one side of the support (2), and in the initial state, the spring combination stop rod (6) is subjected to its own elastic force so that one end of it overlaps with the inclined plate (21) in the direction of travel; Initially, the direction of travel of the secondary slider (45) is misaligned with one end of the spring combination stop (6). When one end of the spring combination stop (6) comes into contact with the inclined plate (21), the other end can extend outward and block the front of the secondary slider (45).

6. The intelligent power switchgear according to claim 5, characterized in that: The spring combination stop bar (6) is provided with a ball bearing at one end near the support (2).

7. The intelligent power switchgear according to claim 1, characterized in that: The secondary slider (45) is also equipped with a shock-absorbing mechanism (7) for protecting the pallet (31) after rapid movement.

8. The intelligent power switchgear according to claim 7, characterized in that: The shock absorption mechanism (7) includes a sleeve rod (71) with one end fixedly sleeved in the auxiliary slider (45). The sleeve rod (71) has several air holes (72) that can communicate with the cavity of the sleeve rod (71) at equal intervals. The sleeve rod (71) also has an air hole (73) at the end. One end of the protrusion (32) is fixedly connected to a piston rod (74). One end of the piston rod (74) can be sleeved in the sleeve rod (71). The sleeve rod (71) has a flared end facing the piston rod (74).

Images