Back splicing structure of double switch cabinets

Abstract

The invention relates to the technical field of switch cabinets, and discloses a double-switch-cabinet back-to-back splicing structure which comprises two switch cabinet bodies, a splicing mechanism is arranged in the middle of the inner side of each switch cabinet body and comprises a support, the support is fixedly connected to the middle of the inner side of each switch cabinet body, and hollow shells are fixedly connected to the upper side and the lower side of the interior of each support. Fixing rods are fixedly connected to the left side and the right side of the interior of the hollow shell, wedge-shaped blocks are slidably connected to the outer sides of the fixing rods, first springs are arranged on the lower sides of the outer walls of the fixing rods, a plug pin is arranged on one side of the interior of the hollow shell, and positioning frames are fixedly connected to the upper side and the lower side of the interior of the support. The cabinet body moves to drive the push plate to move, so that the hook is pushed to be separated from the L-shaped plate, limiting on the movable plate is automatically relieved, at the moment, the first spring pushes the wedge-shaped block to slide upwards along the fixing rod, the wedge face is used for pushing the plug pin to be inserted into the positioning frame, and the splicing efficiency and stability are improved.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, and in particular to a back-to-back splicing structure for dual switchgear. Background Technology

[0002] Low-voltage switchgear is a core piece of equipment in power transmission and distribution systems. It is mainly used for the distribution, control, protection and monitoring of electrical energy, and is widely used in power plants, substations, industrial and mining enterprises and high-rise buildings.

[0003] In existing low-voltage power distribution systems, switchgear is generally arranged in a single row, with each row sharing a single main horizontal copper busbar. Due to the large number of switchgear in a single row sharing a single main horizontal copper busbar, the main horizontal copper busbar is quite long, resulting in a huge amount of copper used. In addition, the price of copper has been rising continuously and has reached a historical high, causing a sharp increase in the manufacturing cost of the switchgear. At the same time, the large area occupied by the single row of switchgear installed in the power distribution room also leads to higher investment costs for the owner.

[0004] In existing technologies, the power distribution industry is increasingly adopting a back-to-back arrangement, where two rows of switchgear are placed back-to-back, sharing the central main busbar system. This structure can save about half of the main horizontal copper busbar usage and effectively reduce the floor space. However, existing technologies typically use bolts through the back plate for fastening when splicing back-to-back. Since the two cabinets are placed back-to-back, it is impossible to operate from the outside. This forces workers to open the cabinet door and go deep into the narrow cabinet filled with electrical components to drill holes and install bolts, which is difficult and inefficient. To solve these problems, existing technologies have designed external connecting plates or simple hooks on the sides or top of the cabinets, attempting to fix the cabinets through external operation. However, external connections can only fix the edges of the cabinets and cannot ensure a tight fit in the central area of ​​the back of the cabinet. Moreover, most existing push-in splicing structures are direct-insertion snap-fit ​​structures, lacking an active rotation locking mechanism, resulting in insufficient connection strength. They may loosen during operation and vibration, reducing the practicality of the double switchgear structure. Summary of the Invention

[0005] The purpose of this invention is to provide a back-to-back splicing structure for dual switch cabinets, which solves the problems of difficult installation and maintenance caused by the need for bolts to be tightened inside the cabinet when splicing dual switch cabinets back to back, and the lack of a rotation locking mechanism in the simple connection structure, resulting in poor connection stability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The dual switch cabinet back-to-back splicing structure includes two switch cabinets. A splicing mechanism is provided in the middle of the inner side of each switch cabinet, a connecting mechanism is provided in the upper middle of the inner side of each switch cabinet, and an adjustment mechanism is provided at the bottom of each switch cabinet. The splicing mechanism includes a bracket, which is fixedly connected to the inner center of the switch cabinet. Hollow shells are fixedly connected to the upper and lower sides of the bracket. Fixed rods are fixedly connected to the left and right sides of the hollow shells. Wedge blocks are slidably connected to the outer sides of the fixed rods. A spring is provided on the lower outer wall of the fixed rod. A pin is provided on one side of the hollow shell. Positioning frames are fixedly connected to the upper and lower sides of the bracket. One end of the pin passes through the hollow shell and the corresponding positioning frame in sequence. A movable plate is slidably connected to one side of the bracket. Connecting plates are fixedly connected to the upper and lower ends of one side of the movable plate. The outer side of the connecting plate passes through the hollow shell and is fixedly connected to the corresponding wedge block. A rotating mechanism is provided on the inner side of the hollow shell.

[0007] The above technical solution enables the automatic triggering of the splicing mechanism when the cabinet approaches, using wedge blocks to drive the pins to extend and engage, thus completing the rapid fixation of the cabinet back-to-back splicing.

[0008] Preferably, the connecting mechanism includes a housing, which is fixedly connected to the upper inner side of the rear switch cabinet. Multiple busbars are equidistantly arranged on the upper inner sides of both switch cabinets. Multiple disconnect switches are equidistantly fixedly connected to the front and rear inner sides of the housing. Multiple elastic contact fingers are equidistantly fixedly connected to the middle inner side of the housing. The front end of the rear busbar penetrates the housing and is fixedly connected to the disconnect switch. The rear end of the front busbar penetrates the housing and is plugged into the disconnect switch. Guide rods are fixedly connected to the left and right inner sides of the housing. A back plate is slidably connected to the outer side of the guide rods. Multiple plug-in posts are equidistantly fixedly connected to the bottom of the back plate. A thrust spring is provided at the bottom outer side of the guide rods. Push blocks are fixedly connected to the left and right top sides of the back plate. A U-shaped frame is fixedly connected to the top of the housing. A mounting plate is slidably connected to the bottom inner side of the U-shaped frame. The outer side of the push block penetrates the housing and contacts the mounting plate.

[0009] The above technical solution establishes an electrical connection between the busbar, disconnector, and flexible contact finger. The mounting plate and backplate are used to lock the position of the busbar, ensuring safety and stability during switching operations.

[0010] Preferably, the adjusting mechanism includes a bracket, which is fixedly connected to the bottom of the switch cabinet. Multiple bases are equidistantly arranged on the lower side of the bracket. A threaded rod is rotatably connected to one side of the inner side of each base, with one end of the threaded rod penetrating the base. A rack is threadedly connected to the outer side of the threaded rod, and the rack is slidably connected to the inner side of the base. A rotating column is rotatably connected to the middle of the inner side of the base. A gear is fixedly connected to the bottom outer side of the rotating column. A turntable is fixedly connected to the top of the rotating column, penetrating the base. A threaded column is fixedly connected to one side of the top of the turntable. A threaded sleeve is threadedly connected to the outer side of the threaded column, and the threaded sleeve is rotatably connected to the bracket. A positioning cone is fixedly connected to the bottom of the base.

[0011] The above technical solution enables multi-dimensional fine-tuning of the cabinet position through gear transmission and thread drive, correcting docking deviations caused by uneven ground and ensuring splicing alignment accuracy.

[0012] Preferably, the rotating mechanism includes a support ring, which is fixedly connected to the outside of the pin. A lever is fixedly connected to one side of the support ring. A support rod is fixedly connected to the inside of the hollow shell. A linkage pawl is slidably connected to the outside of the support rod. A second spring is provided at the top of the outside of the support rod. A lever is fixedly connected to one side of the wedge block. A limit piece is fixedly connected to the middle of the outside of the support rod.

[0013] The above technical solution converts the linear motion of the wedge block into the rotational motion of the pin. The pin is driven to rotate by the linkage claw and the lever, thereby achieving automatic rotational locking after the pin is inserted.

[0014] Preferably, the rotating mechanism further includes a third spring, which is disposed on one side of the support ring, and the front and rear ends of the third spring abut against the support ring and the hollow shell, respectively.

[0015] The above technical solution provides a reverse thrust to the support ring, and the auxiliary pin automatically resets after unlocking, thus releasing the locking state of the cabinet.

[0016] Preferably, the splicing mechanism further includes a hook, which is rotatably connected to one end of the movable plate, an L-shaped plate is fixedly connected to one side of the bracket, and a push plate is fixedly connected to the other side of the bracket.

[0017] The above technical solution utilizes the relative movement of the push plate to force the hook to detach from the L-shaped plate, automatically releasing the limit on the movable plate, thereby triggering the subsequent pin ejection action.

[0018] Preferably, the splicing mechanism further includes a positioning pin, which is fixedly connected to one side of the hollow shell, and a positioning ring is fixedly connected to the bottom of one side of the bracket, with the positioning pin and the positioning ring being inserted into each other.

[0019] The above technical solution enables the initial and rapid alignment of the two switch cabinets, providing a positioning benchmark for the precise insertion of the subsequent splicing mechanism.

[0020] Preferably, the connecting mechanism further includes a mounting rod, which is fixedly connected to the inner side of the mounting plate. Pawls are slidably connected to the left and right sides of the outer wall of the mounting rod. Racket grooves are opened on the left and right sides of the inner side of the U-shaped frame. The pawls are engaged with the ratchet grooves. A button is fixedly connected to the top of the pawls. The outer side of the button penetrates the mounting plate.

[0021] The above technical solution uses the engagement of the pawl and the ratchet groove to lock the position of the mounting plate, preventing the mechanism from retracting during operation and ensuring the reliability of the busbar locking state.

[0022] Preferably, the connecting mechanism further includes two return springs, which are respectively disposed on the left and right sides of the outer wall of the mounting rod, and the left and right ends of the return springs abut against the mounting plate and the pawl, respectively.

[0023] The above technical solution provides constant elasticity to the pawl, ensuring that the pawl always maintains its meshing tendency with the ratchet groove, thereby improving the stability of the locking structure.

[0024] Preferably, the connecting mechanism further includes a U-shaped rod, which is fixedly connected to the rear side of the mounting plate, and the tops of the multiple disconnect switches all penetrate the housing and are fixedly connected to the same linkage rod.

[0025] The above technical solution forms a mechanical interlock with the disconnecting switch, ensuring that the circuit can only be operated when the mounting plate is in place, and the circuit is forcibly disconnected when the plate is removed, preventing misoperation.

[0026] In summary, the present invention has at least one of the following beneficial technical effects: 1. This invention moves the cabinet, causing the push plate to move, thereby pushing the hook to disengage from the L-shaped plate and automatically releasing the limit on the movable plate. At this time, a spring pushes the wedge block to slide upward along the fixed rod, using the wedge surface to push the pin into the positioning frame. Simultaneously, as the wedge block moves upward, it drives the lever block to push the linkage claw upward. The linkage claw drives the support ring to rotate through the lever, thereby driving the pin to automatically rotate 90 degrees after being inserted into the positioning frame to achieve locking, thus improving splicing efficiency and stability.

[0027] 2. This invention uses a mounting plate to move a U-shaped rod forward, creating operating space for the linkage rod of the disconnect switch. Simultaneously, the mounting plate, through the mounting rod, moves the pawl forward and presses against the push block, causing the plug-in pin to insert and lock the position of the front busbar. When unlocking, the mounting plate is pushed backward, and the thrust spring pushes the back plate to reset, releasing the lock on the busbar. If the disconnect switch is in the open state, the mounting plate will force the linkage rod to rotate when it resets, thereby closing the disconnect switch. This ensures that the circuit can only be opened when the busbar is securely locked, and the circuit must be cut off before disconnection to avoid arcing caused by plugging or unplugging the busbar under load.

[0028] 3. This invention uses a positioning cone at the bottom of the base to insert into a pre-drilled hole in the ground for rough positioning. Rotating the threaded rod drives the rack to move, and the rack drives the gear and rotating column to rotate, causing the threaded column at the top of the turntable to perform circumferential motion. The threaded sleeve drives the bracket to make fine adjustments in the horizontal direction, ensuring precise alignment of the cabinets on both sides. At the same time, by rotating the threaded sleeve, the bracket is moved in the vertical direction, enabling independent fine adjustments of the switch cabinet in both horizontal and vertical directions, thus ensuring the accuracy of the splicing. Attached Figure Description

[0029] Figure 1 This is a perspective view of the present invention; Figure 2 This is a structural breakdown diagram of the present invention; Figure 3 This is a partial structural exploded view of the present invention; Figure 4 This is a partial structural cross-sectional view of the splicing mechanism of the present invention; Figure 5 This is a partial structural exploded view of the splicing mechanism of the present invention; Figure 6 This is a partial structural diagram of the present invention; Figure 7 This is a partial structural cross-sectional view of the present invention; Figure 8 This is a partial structural cross-sectional view of the connecting mechanism of the present invention; Figure 9 This is a partial structural exploded view of the adjustment mechanism of the present invention; Figure 10 This is a partial structural cross-sectional view of the adjustment mechanism of the present invention.

[0030] The components include: 1. Switch cabinet body; 2. Splicing mechanism; 21. Bracket; 22. Hollow shell; 23. Fixing rod; 24. Wedge block; 25. Spring 1; 26. Pin; 27. Movable plate; 28. Connecting plate; 29. ​​Rotating mechanism; 291. Support ring; 292. Lever; 293. Support rod; 294. Linkage claw; 295. Spring 2; 296. Lever block; 297. Limiting plate; 298. Spring 3; 210. Hook; 211. L-shaped plate; 212. Push plate; 213. Positioning frame; 214. Positioning pin; 215. Positioning ring; 3. Connecting mechanism; 31. Cabinet body. 32. Disconnecting switch; 33. Spring-loaded contact finger; 34. Busbar; 35. Guide rod; 36. Backplate; 37. Push block; 38. U-shaped bracket; 39. Rattle groove; 310. Mounting plate; 311. Mounting rod; 312. Pawl; 313. Button; 314. Plug-in post; 315. Thrust spring; 316. Linkage rod; 317. U-shaped rod; 318. Return spring; 4. Adjusting mechanism; 41. Bracket; 42. Base; 43. Threaded rod; 44. Rack; 45. Rotating column; 46. Gear; 47. Turntable; 48. Threaded column; 49. Threaded sleeve; 410. Positioning cone. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 10 The present invention will be further described in detail below.

[0032] The present invention provides a dual switch cabinet back-to-back splicing structure, including two switch cabinet bodies 1, a splicing mechanism 2 is provided in the middle of the inner side of the switch cabinet body 1, a connecting mechanism 3 is provided in the upper middle of the inner side of the switch cabinet body 1, and an adjustment mechanism 4 is provided at the bottom of the switch cabinet body 1. The splicing mechanism 2 includes a bracket 21, which is fixedly connected to the inner middle of the switch cabinet body 1. Hollow shells 22 are fixedly connected to the upper and lower sides of the bracket 21. Fixing rods 23 are fixedly connected to the left and right sides of the hollow shells 22. Wedge blocks 24 are slidably connected to the outer sides of the fixing rods 23. A spring 25 is provided on the lower side of the outer wall of the fixing rods 23, which can push the wedge blocks 24 upwards. A pin 26 is provided on one side of the hollow shell 22. Positioning frames 213 are fixedly connected to the upper and lower sides of the bracket 21. One end of the pin 26 passes through the hollow shell 22 and the corresponding positioning frame 213, allowing the pin 26 to be inserted into the positioning frame 213. A movable plate 27 is slidably connected to one side of the bracket 21. Connecting plates 28 are fixedly connected to the upper and lower ends of one side of the movable plate 27. The outer side of the hollow shell 22 is fixedly connected to the corresponding wedge block 24. The inner side of the hollow shell 22 is provided with a rotating mechanism 29. The splicing mechanism 2 also includes a hook 210, which is rotatably connected to one end of the movable plate 27. An L-shaped plate 211 is fixedly connected to one side of the bracket 21. The hook 210 can be hung on the L-shaped plate 211 to fix the movable plate 27. A push plate 212 is fixedly connected to the other side of the bracket 21. The push plate 212 can push the hook 210 away from the L-shaped plate 211. The splicing mechanism 2 also includes a positioning pin 214, which is fixedly connected to one side of the hollow shell 22. A positioning ring 215 is fixedly connected to the bottom of one side of the bracket 21. The positioning pin 214 and the positioning ring 215 are inserted into each other. The positioning pin 214 and the positioning ring 215 can achieve preliminary positioning. The rotating mechanism 29 includes a support ring 291, which is fixedly connected to the outside of the pin 26. A lever 292 is fixedly connected to one side of the support ring 291, which drives the support ring 291 to rotate. A support rod 293 is fixedly connected to one side of the interior of the hollow shell 22. A linkage pawl 294 is slidably connected to the outside of the support rod 293, which can drive the lever 292 to move. A second spring 295 is provided at the top of the outside of the support rod 293, which can push the linkage pawl 294 downward. The wedge block 24 is fixedly connected to one side of a lever block 296, and a limit piece 297 is fixedly connected to the middle of the outer side of the support rod 293. The limit piece 297 is used to limit the downward movement height of the linkage claw 294, thereby ensuring that the pin 26 can be accurately reset. The rotating mechanism 29 also includes a spring 298, which is located on one side of the support ring 291. The front and rear ends of the spring 298 abut against the support ring 291 and the hollow shell 22, respectively. The spring 298 can push the pin 26 to reset through the support ring 291. Specifically, when it is necessary to perform a back-to-back splicing operation on two switch cabinets 1, first move one switch cabinet 1 closer to the fixed switch cabinet 1 on the other side. This is done by aligning the positioning pin 214 on one switch cabinet 1 with and inserting it into the positioning ring 215 at the bottom of the other switch cabinet 1, thus completing the initial positioning between the two cabinets. At this time, the axes of the pins 26 on both sides are coaxially aligned with the center holes of the corresponding positioning brackets 213. As the switch cabinets 1 continue to move closer to each other, the brackets 21 fixed inside the switch cabinets 1 are displaced accordingly. The push plate 212 on 21 contacts and pushes the hook 210 on the moving path, forcing the hook 210 to rotate and disengage from the slot of the L-shaped plate 211. This releases the locking restriction of the hook 210 on the position of the movable plate 27, at which point the movable plate 27 is in a free state. The wedge block 24, which is rigidly connected to the movable plate 27 through the connecting plate 28, is also released from its vertical limit. Under the action of the spring force released by the spring 25, the wedge block 24 is pushed to slide upward along the fixed rod 23. The inclined wedge surface on the side of the wedge block 24 contacts the tail of the pin 26 and generates a squeezing force, which... The vertical thrust is converted into a horizontal thrust, driving the pin 26 to extend outward and insert into the locking hole of the positioning bracket 213. During the outward extension of the pin 26, the outer fixed support ring 291 moves synchronously, and the lever 292 on the support ring 291 slides into the slot of the linkage claw 294. When the inclined surface of the wedge block 24 completely pushes past the pin 26, the pin 26 stops its horizontal displacement, but the wedge block 24 continues to move upward under the action of the spring 25, driving the lever 296 fixed on the side of the wedge block 24 to move upward and lift the linkage claw 294. During the upward movement, spring 295 is compressed and, through its cooperation with lever 292, drives support ring 291 to rotate, thereby causing pin 26 to rotate inside positioning frame 213. When wedge block 24 reaches the top stop, pin 26 rotates exactly ninety degrees to form a hook-locked state, achieving a rigid connection between the two switch cabinets 1. When unlocking, pull down movable plate 27 to drive wedge block 24 to move downward and reset. Pin 26 loses the support of wedge block 24 and rotates in the opposite direction and retracts under the action of spring 298 and its own rotation mechanism, releasing the lock on the cabinet.

[0033] The connecting mechanism 3 includes a housing 31, which is fixedly connected to the upper interior of the rear switch cabinet 1. Multiple busbars 34 are equidistantly arranged on the upper interior of both switch cabinets 1. Multiple disconnect switches 32 are equidistantly fixedly connected to the front and rear interior sides of the housing 31. Multiple resilient contacts 33 are equidistantly fixedly connected to the center of the inner side of the housing 31. The front end of the rear busbar 34 penetrates the housing 31 and is fixedly connected to the disconnect switch 32. The rear end of the front busbar 34 penetrates the housing 31 and is inserted into the disconnect switch 32. The disconnect switch 32 and the resilient contacts 33 connect the front and rear busbars 34. 4. The enclosure 31 has guide rods 35 fixedly connected to both the left and right sides inside. A back plate 36 is slidably connected to the outer side of the guide rods 35. Multiple plug-in pins 314 are fixedly connected at equal intervals to the bottom of the back plate 36. The plug-in pins 314 can be inserted into the front busbar 34 to lock the busbar 34. A thrust spring 315 is provided at the bottom outer side of the guide rods 35. The thrust spring 315 can push the back plate 36 to move upward. Push blocks 37 are fixedly connected to both the left and right sides of the top of the back plate 36. A U-shaped frame 38 is fixedly connected to the top of the enclosure 31. A mounting plate 310 is slidably connected to the bottom inner side of the U-shaped frame 38. The outer side of the push block 37 penetrates the housing 31 and contacts the mounting plate 310. The mounting plate 310 can push the push block 37 downward. The connecting mechanism 3 also includes a mounting rod 311, which is fixedly connected to the inner side of the mounting plate 310. Pawls 312 are slidably connected to the left and right sides of the outer wall of the mounting rod 311. Racket grooves 39 are provided on the left and right sides of the interior of the U-shaped frame 38. The pawls 312 are engaged with the ratchet grooves 39. The pawls 312 can lock the position of the mounting plate 310. A button 313 is fixedly connected to the top of the pawl 312. The outer side of the button 313 penetrates the mounting plate. 310, the connecting mechanism 3 also includes two return springs 318, which are respectively disposed on the left and right sides of the outer wall of the mounting rod 311. The left and right ends of the return springs 318 abut against the mounting plate 310 and the pawl 312 respectively. The return springs 318 can push the pawl 312 to engage with the ratchet groove 39. The connecting mechanism 3 also includes a U-shaped rod 317, which is fixedly connected to the rear side of the mounting plate 310. The tops of the multiple disconnect switches 32 all penetrate the housing 31 and are fixedly connected to the same linkage rod 316. The U-shaped rod 317 can form a linkage with the linkage rod 316. Specifically, after the mechanical assembly of the cabinet is completed, when making the internal busbar electrical connection, the end of the busbar 34 in the front switch cabinet 1 passes through the box 31 and is inserted into the elastic contact finger 33 on the rear side to establish initial electrical contact. Then, the operator holds the mounting plate 310 and pulls it forward. The mounting plate 310 drives the U-shaped rod 317 at the rear end to move forward synchronously, so that the U-shaped rod 317 moves out of the area above the disconnect switch 32, making room for the rotation operation of the linkage rod 316. At the same time, the mounting plate... 310 drives the pawl 312 forward via the internal mounting rod 311. The front end of the pawl 312 abuts against and presses against the push block 37. After being forced, the push block 37 drives the back plate 36 to slide downward along the guide rod 35. The downward movement of the back plate 36 drives the bottom insertion post 314 to vertically insert into the positioning hole reserved in the front busbar 34, thereby locking the busbar 34 in the housing 31. When the mounting plate 310 moves to the front limit position, the structure of the U-shaped rod 317 forces... The pawl 312 engages with the ratchet grooves 39 on both sides of the U-shaped frame 38. The position of the pawl 312 and the locking mounting plate 310 of the ratchet grooves 39 prevents retraction. At this time, since the U-shaped rod 317 has released its obstruction of the linkage rod 316, the operator can move the linkage rod 316 to close the disconnect switch 32. The main circuit is connected through the cooperation of the busbar 34, the elastic contact finger 33 and the disconnect switch 32, ensuring that the busbar 34 must be locked before the switch can be closed to prevent plugging and unplugging under load. When disconnection is required, press the button 313 to retract the pawl 312 and disengage it from the ratchet grooves 39, push the mounting plate 310 backward, release the pressure on the push block 37, and the push spring 315 releases its elasticity to push the back plate 36 upward. Pull out the plug 314 to release the lock on the busbar 34. If the disconnect switch 32 is not disconnected at this time, the edge of the retracted mounting plate 310 will forcefully hit the linkage rod 316 to rotate it to the disconnect position, forcibly cutting off the circuit and ensuring operational safety.

[0034] The adjustment mechanism 4 includes a bracket 41, which is fixedly connected to the bottom of the switch cabinet 1. Multiple bases 42 are equidistantly arranged on the lower side of the bracket 41. A threaded rod 43 is rotatably connected to one side of the inner side of the base 42. One end of the threaded rod 43 passes through the base 42. A rack 44 is threadedly connected to the outer side of the threaded rod 43. The rack 44 is slidably connected to the inner side of the base 42. When the threaded rod 43 rotates, it drives the rack 44 to move. A rotating column 45 is rotatably connected to the middle of the inner side of the base 42. A gear 46 is fixedly connected to the bottom of the outer side of the rotating column 45. The top of the rotating column 45 passes through the base 42 and is fixedly connected to a turntable 47. The rotating column 45 drives the turntable 47 to rotate. A threaded column 48 is fixedly connected to one side of the top of the turntable 47. A threaded sleeve 49 is threadedly connected to the outer side of the threaded column 48. The threaded sleeve 49 is rotatably connected to the bracket 41. A positioning cone 410 is fixedly connected to the bottom of the base 42. The positioning cone 410 can be inserted into a pre-embedded hole in the ground. Specifically, during the calibration and adjustment process before assembling the switch cabinet 1, the positioning cone 410 on the base 42 at the bottom of the adjustment mechanism 4 is first aligned and inserted into the pre-embedded hole in the ground to complete the positioning and anchoring of the equipment. Then, the threaded rod 43 is rotated. The rotation of the threaded rod 43 drives the rack 44 to move within the base 42. The rack 44 drives the meshing gear 46 to rotate, which in turn drives the rotating column 45 and the top turntable 47 to rotate. The rotation of the turntable 47 causes the threaded column 48 at its eccentric position to oscillate in a circular motion. 8. The threaded sleeve 49 pulls the bracket 41 to produce a slight displacement in the horizontal plane. By coordinating and adjusting the threaded rods 43 in multiple directions, the horizontal coordinate of the switch cabinet 1 is accurately corrected. After horizontal alignment, the threaded sleeve 49 is directly rotated to make the threaded sleeve 49 rise and fall vertically along the threaded column 48, thereby driving the bracket 41 and the switch cabinet 1 above to make fine adjustments in vertical height. Through independent adjustment in both horizontal and vertical dimensions, the alignment error caused by uneven ground is eliminated, ensuring that the splicing mechanisms 2 on both sides can be accurately connected.

[0035] Working principle: When it is necessary to assemble switch cabinet 1, first move switch cabinet 1 into position so that the positioning pin 214 in one side of switch cabinet 1 is inserted into the positioning ring 215 in the other side of switch cabinet 1, achieving initial fixation. This allows the pins 26 on both sides to align with the corresponding positioning brackets 213. As the brackets 21 on both sides move with switch cabinet 1, they will drive the push plate 212 to move, thereby pushing the hook 210 to disengage from the L-shaped plate 211, releasing the limiting effect of the hook 210 on the movable plate 27, allowing the... The movable plate 27 is connected to the wedge block 24 via the connecting plate 28. At this time, the limit of the wedge block 24 will be released, and the spring 25 can push the wedge block 24 to slide upward along the fixed rod 23. Due to the wedge surface design of the contact surface between the pin 26 and the wedge block 24, when the wedge block 24 moves upward, it will push the pin 26 to move, so that the pin 26 is inserted into the positioning frame 213. During this process, the pin 26 keeps moving back and forth, and the lever 292 fixed on the support ring 291 will slide into the linkage claw 294. After the inclined surface of the wedge block 24 disengages from the pin 26, it will cause the lever block 296 to continue moving upward. At this time, the lever block 296 just comes into contact with the linkage pawl 294, thus pushing the linkage pawl 294 to move upward. When the linkage pawl 294 moves upward, it will compress the second spring 295, and drive the support ring 291 to rotate through the lever 292, thereby driving the pin 26 to rotate. When the wedge block 24 moves to the top, the linkage pawl 294 just drives the pin 26 to rotate ninety degrees, so that the pin 26 can connect with the positioning frame 213. The two switch cabinets 1 work together to form a whole without detachment. They can be joined simply by bringing the two cabinets close to each other, making the joining process more convenient and faster. When unlocking, the movable plate 27 is pulled, and the movable plate 27 moves the wedge block 24 downward through the connecting plate 28, which in turn drives the pin 26 to rotate. When the wedge block 24 disengages from the pin 26, the spring 3 298 pushes the pin 26 to reset through the support ring 291, thereby releasing the fixing effect on the switch cabinets 1 on both sides. When it is necessary to splice the busbars inside the two switch cabinets 1, the busbar 34 of the front switch cabinet 1 will be inserted into the rear cabinet 31 and connected to the elastic contact finger 33 located on the front. The mounting plate 310 will then be pulled forward, causing the U-shaped rod 317 to move forward, thus creating space for the linkage rod 316 on the top of the disconnector switch 32. As the mounting plate 310 moves, it will cause the pawl 312 to move forward via the mounting rod 311, pressing the extended push block 37. At this time, the push block 37 will cause the back plate 36 to slide downwards on the outside of the guide rod 35. As the back plate 36 moves, it will cause the plug-in post 314 to insert into the front busbar 34, locking the position of the front busbar 34. After the mounting plate 310 is in place, the U-shaped rod 317 will push the pawl 312 to engage with the ratchet groove 39, thus locking the position of the mounting plate 310. Furthermore, due to the forward movement of the U-shaped rod 317, the operator... When the operator moves the linkage rod 316, the disconnect switch 32 can be opened. The circuit can be connected through the busbars 34 on both sides, the elastic contact fingers 33 and the disconnect switch 32. Through the cooperation of the U-shaped rod 317 and the linkage rod 316, the front busbar 34 is locked inside the housing 31 when the circuit is connected, so as to avoid the generation of electric arc due to the forced pulling out of the busbar 34. When unlocking, press the buttons 313 on both sides, which will drive the pawls 312 on both sides to retract into the mounting plate 310. Then push the mounting plate 310 backward to release the limit on the push block 37. At this time, the thrust spring 315 will push the back plate 36 to move upward, thereby driving the plug post 314 to disengage from the front busbar 34 and release the limit on the busbar 34. If the disconnect switch 32 is in the open state at this time, when the mounting plate 310 moves backward, it will push the linkage rod 316 to rotate backward, thereby closing the disconnect switch 32 and disconnecting the circuit. Furthermore, when splicing the switch cabinets 1 on both sides, the positioning cone 410 at the bottom of the base 42 is first inserted into the pre-embedded positioning hole in the ground to quickly complete the rough positioning of the cabinet. Then, the threaded rod 43 is rotated. When the threaded rod 43 moves, it will drive the rack 44 to move. Since the rack 44 meshes with the gear 46, when the rack 44 moves, it can drive the rotating column 45 to rotate through the gear 46, which in turn drives the turntable 47 to rotate. The rotation of the turntable 47 will drive the threaded column 48 to perform circumferential motion, which will then drive the bracket 41 to move through the threaded sleeve 49. By adjusting multiple threaded rods 43 simultaneously, the position of the bracket 41 can be finely adjusted, so that the horizontal position of the switch cabinets 1 on both sides can be accurately aligned. Simultaneously, multiple threaded sleeves 49 are rotated. When the threaded sleeves 49 rotate, they will drive the bracket 41 to move in the vertical direction, so that the vertical position of the switch cabinets 1 on both sides can be finely adjusted, and the switch cabinets 1 on both sides can be accurately aligned.

[0036] 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. A dual-switch cabinet back-to-back splicing structure, comprising two switch cabinet bodies (1), characterized in that, The switch cabinet (1) is provided with a splicing mechanism (2) in the middle of its inner side, a connecting mechanism (3) in the upper middle of its inner side, and an adjustment mechanism (4) at the bottom of its bottom. The splicing mechanism (2) includes a bracket (21), which is fixedly connected to the inner middle of the switch cabinet (1). Hollow shells (22) are fixedly connected to the upper and lower sides of the bracket (21). Fixing rods (23) are fixedly connected to the left and right sides of the hollow shells (22). Wedge blocks (24) are slidably connected to the outer side of the fixing rods (23). A spring (25) is provided on the lower side of the outer wall of the fixing rods (23). A pin (26) is provided on one side of the inner side of the hollow shells (22). The upper and lower sides of the bracket (21) are fixedly connected to positioning frames (213). One end of the pin (26) passes through the hollow shell (22) and the corresponding positioning frame (213) in sequence. A movable plate (27) is slidably connected to one side of the bracket (21). A connecting plate (28) is fixedly connected to the upper and lower ends of one side of the movable plate (27). The outer side of the connecting plate (28) passes through the hollow shell (22) and is fixedly connected to the corresponding wedge block (24). A rotating mechanism (29) is provided on the inner side of the hollow shell (22).

2. The back-to-back splicing structure of the dual switchgear according to claim 1, characterized in that, The connecting mechanism (3) includes a housing (31), which is fixedly connected to the upper interior of the rear switch cabinet (1). Multiple busbars (34) are equidistantly arranged on the upper interior of both switch cabinets (1). Multiple disconnect switches (32) are equidistantly fixedly connected to the front and rear interior of the housing (31). Multiple elastic contact fingers (33) are equidistantly fixedly connected to the middle inner side of the housing (31). The front end of the rear busbar (34) penetrates the housing (31) and is fixedly connected to the disconnect switch (32). The rear end of the front busbar (34) penetrates the housing (31) and is inserted into the disconnect switch (32). The box (31) is fixedly connected to the left and right sides of the interior. The guide rod (35) is slidably connected to the outer side of the guide rod (35). The bottom of the back plate (36) is fixedly connected to multiple plug-in posts (314) at equal intervals. The bottom of the outer side of the guide rod (35) is provided with a thrust spring (315). The top left and right sides of the back plate (36) are fixedly connected to push blocks (37). The top of the box (31) is fixedly connected to a U-shaped frame (38). The bottom of the inner side of the U-shaped frame (38) is slidably connected to a mounting plate (310). The outer side of the push block (37) penetrates the box (31) and contacts the mounting plate (310).

3. The back-to-back splicing structure of the dual switchgear according to claim 1, characterized in that, The adjusting mechanism (4) includes a bracket (41), which is fixedly connected to the bottom of the switch cabinet (1). Multiple bases (42) are equidistantly arranged on the lower side of the bracket (41). A threaded rod (43) is rotatably connected to one side of the inner side of each base (42). One end of the threaded rod (43) passes through the base (42). A rack (44) is threadedly connected to the outer side of the threaded rod (43). The rack (44) is slidably connected to the inner side of the base (42). The inner side of the base (42)... A rotating column (45) is rotatably connected to the middle side. A gear (46) is fixedly connected to the bottom outer side of the rotating column (45). The top of the rotating column (45) passes through the base (42) and is fixedly connected to a turntable (47). A threaded column (48) is fixedly connected to one side of the top of the turntable (47). A threaded sleeve (49) is threadedly connected to the outer side of the threaded column (48). The threaded sleeve (49) is rotatably connected to the bracket (41). A positioning cone (410) is fixedly connected to the bottom of the base (42).

4. The back-to-back splicing structure of the dual switchgear according to claim 1, characterized in that, The rotating mechanism (29) includes a support ring (291), which is fixedly connected to the outside of the pin (26). A lever (292) is fixedly connected to one side of the support ring (291). A support rod (293) is fixedly connected to one side of the hollow shell (22). A linkage claw (294) is slidably connected to the outside of the support rod (293). A spring (295) is provided on the top of the outside of the support rod (293). A lever block (296) is fixedly connected to one side of the wedge block (24). A limit piece (297) is fixedly connected to the middle of the outside of the support rod (293).

5. The back-to-back splicing structure of the dual switchgear according to claim 4, characterized in that, The rotating mechanism (29) also includes a third spring (298), which is disposed on one side of the support ring (291). The front and rear ends of the third spring (298) abut against the support ring (291) and the hollow shell (22) respectively.

6. The back-to-back splicing structure of the dual switchgear according to claim 1, characterized in that, The splicing mechanism (2) also includes a hook (210), which is rotatably connected to one end of the movable plate (27). An L-shaped plate (211) is fixedly connected to one side of the bracket (21), and a push plate (212) is fixedly connected to the other side of the bracket (21).

7. The back-to-back splicing structure of the dual switchgear according to claim 1, characterized in that, The splicing mechanism (2) also includes a positioning pin (214), which is fixedly connected to one side of the hollow shell (22). A positioning ring (215) is fixedly connected to the bottom of one side of the bracket (21), and the positioning pin (214) is inserted into the positioning ring (215).

8. The back-to-back splicing structure of the dual switch cabinet according to claim 2, characterized in that, The connecting mechanism (3) further includes a mounting rod (311), which is fixedly connected to the inner side of the mounting plate (310). The outer walls of the mounting rod (311) are slidably connected with pawls (312) on both the left and right sides. The U-shaped frame (38) has ratchet grooves (39) on both the left and right sides inside. The pawls (312) are engaged with the ratchet grooves (39). A button (313) is fixedly connected to the top of the pawls (312), and the outer side of the button (313) penetrates the mounting plate (310).

9. The back-to-back splicing structure of the dual switchgear according to claim 8, characterized in that, The connecting mechanism (3) also includes two return springs (318), which are respectively disposed on the left and right sides of the outer wall of the mounting rod (311). The left and right ends of the return springs (318) abut against the mounting plate (310) and the pawl (312) respectively.

10. The back-to-back splicing structure of the dual switchgear according to claim 8, characterized in that, The connecting mechanism (3) also includes a U-shaped rod (317), which is fixedly connected to the rear side of the mounting plate (310). The tops of the multiple disconnect switches (32) all penetrate the housing (31) and are fixedly connected to the same linkage rod (316).

Images