Low-voltage lug plate connecting structure of distribution transformer

Abstract

The invention relates to the technical field of distribution transformer mounting equipment, in particular to a distribution transformer low-voltage lug connecting structure which comprises a top mounting plate, and bolt holes for mounting an oil-immersed distribution transformer are formed in the inner wall of the top mounting plate. Water guiding blocks capable of guiding rainwater are fixedly mounted on the two sides of the top mounting plate, a sliding groove allowing a supporting block to slide is formed in the bottom of the top mounting plate, the bottom of the supporting block is fixedly connected with the top of a telescopic mechanism, and the bottom of the telescopic mechanism is fixedly connected with the top of a mounting mechanism. Rigid downward acting force applied to the low-voltage comprehensive distribution box is buffered through the hoisting spring and the buffer spring, and gravity is dispersed again through the movable plate, the deflection plate and the guide block, so that the rigid acting force applied to the connecting block is reduced, and the service life of the low-voltage lug plate connecting structure of the distribution transformer is prolonged; and the risk of rigid fracture caused by long-term use of the connecting structure is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution transformer installation equipment, in particular to a low-voltage terminal lug connection structure for a distribution transformer. Background Art

[0002] The 10kV pole-mounted transformer platform is a new product launched by State Grid to meet the requirements of smart distribution network construction and development. It features safety, reliability, durability, rational structure, reduced construction costs, and economic efficiency. It facilitates unified construction standards and equipment specifications, facilitating operation, maintenance, and cost reduction.

[0003] A 10kV pole-mounted transformer system primarily includes a transformer, dropout fuses, a removable lightning rod, a low-voltage integrated distribution box, insulated cables connecting the 10kV down-lead to the integrated distribution box, and other accessories. The system consists of a power transformer, an outdoor high-voltage AC vacuum circuit breaker, an outdoor high-voltage dropout fuse, an outdoor high-voltage zinc oxide lightning arrester, a low-voltage integrated distribution box (JP), cables, brackets, and accessories. This system's primary function is to connect 10kV high-voltage AC power to the power transformer via the outdoor high-voltage dropout fuses or outdoor high-voltage AC vacuum circuit breaker, and the zinc oxide lightning arrester, where it is then stepped down to 0.4kV AC. This power is then distributed to various branch distribution systems via the integrated distribution box. This system is primarily used in rural and urban power distribution systems with 50H2 AC voltage and a rated voltage of 10kV. This product is designed in accordance with the "Typical Design of Distribution Network Project of State Grid Corporation of China - Distribution Station Volume", and each component or part complies with its own product standard.

[0004] Currently, when most of the low-voltage terminal lug connection structures of distribution transformers on the market are in use, since the connection structure needs to bear the weight of the distribution box and transformer, its rigid force will directly act on the connection structure, and there is a risk of rigid fracture of the connection structure during long-term use. Summary of the Invention

[0005] The object of the present invention is to provide a low-voltage terminal lug connection structure for a distribution transformer, so as to solve the problem raised in the above-mentioned background technology that there is a risk of fracture of the rigidity of the connection structure during long-term use. In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a low-voltage terminal lug connection structure for a distribution transformer, comprising a top mounting plate, the inner wall of the top mounting plate is provided with bolt holes for mounting an oil-immersed distribution transformer, water diversion blocks capable of guiding rainwater are fixedly mounted on both sides of the top mounting plate, a sliding groove for sliding a support block is provided at the bottom of the top mounting plate, the bottom of the support block is fixedly connected to the top of the telescopic mechanism, the bottom of the telescopic mechanism is fixedly connected to the top of the mounting mechanism, the inner wall of the telescopic mechanism is slidably connected to the outer wall of the buffer mechanism, the telescopic mechanism can slide linearly along the outer wall of the buffer mechanism, and the bottom of the buffer mechanism is fixedly connected to the top of the lifting mechanism.

[0006] Preferably, the telescopic mechanism includes a telescopic tube, a reinforcement block and a reinforcement rod. The inner wall of the telescopic tube is provided with a telescopic groove for the buffer mechanism to telescope and slide, and the inner wall of the telescopic groove is fixedly connected to the outer wall of the reinforcement block. The inner wall of the reinforcement block is fixedly connected to the reinforcement rod. The outer wall of the reinforcement rod is slidably inserted into the inner wall of the buffer mechanism, and the top of the telescopic tube close to the buffer mechanism is fixedly connected to the bottom of the support block, and the bottom of the telescopic tube away from the buffer mechanism is fixedly connected to the top of the mounting mechanism. The reinforcement block can provide multi-point dispersed support to the reinforcement rod, so that the rigid force applied to the telescopic tube can be dispersed to the reinforcement rod.

[0007] Preferably, the mounting mechanism includes a fixed block, an adjusting block and a mounting ring, the top of the fixed block is fixedly connected to the bottom of the telescopic tube away from the buffer mechanism, and the inner wall of the fixed block is provided with an adjusting opening for the adjustment block to be extended and retracted, a fixed plate is provided on one side of the adjusting block, and the fixed plate is larger than the adjusting opening, and the side of the adjusting block away from the fixed plate is fixedly connected to the outer wall of the mounting ring, and the adjusting block is pulled so that the adjusting block can slide linearly in the fixed block, and when the inner wall of the mounting ring abuts against the outer wall of the cement column, the mounting ring is fixed to the outer wall of the cement column by bolts, and when the adjusting block stops moving, the pin in the fixed block will be inserted into the adjusting block under the telescopic force of the positioning spring, so as to prevent the adjusting block from moving in the fixed block, so that the mounting mechanism can be applied to cement columns of different diameters.

[0008] Preferably, a positioning groove is provided on the inner wall of the fixed block, and a positioning spring is provided on the inner top wall of the positioning groove. The other end of the positioning spring is fixedly connected to the latch, and the outer wall of the latch is movably plugged into the inner wall of the adjusting block. The latch can position the adjusting block. When the adjusting block slides in the fixed block, the latch will lift up to compress the positioning spring. When the adjusting block stops moving, the latch in the fixed block will be inserted into the adjusting block under the telescopic force of the positioning spring, thereby avoiding after the adjustment is completed.

[0009] Preferably, the buffer mechanism includes a connecting block, a connecting plate, a movable plate, a buffer spring, a deflection plate and a guide block, the inner wall of the connecting block is provided with a connecting groove, and the inner wall of the connecting groove is fixedly installed with the connecting plate, the outer wall of the connecting plate is slidably plugged with the outer wall of the reinforcing rod, and the outer wall of the connecting block is slidably plugged with the inner wall of the telescopic tube, the center of the connecting block is provided with a movable opening for the movable plate to slide up and down, and the interior of the movable plate is provided with a buffer opening for the buffer spring to deform and store force, the inner top wall of the buffer opening is fixedly connected to one end of the buffer spring, and the other end of the buffer spring is fixedly connected to the top of the connecting block, the outer wall of the top of the movable plate is rotatably connected to the inner wall of one side of the deflection plate, and the inner wall of the other side of the deflection plate is rotatably connected to the outer wall of the guide block, and the guide block is close to the inner wall of the deflection plate. The outer wall near the bottom is slidably connected to the inner wall of the connecting block, and the outer wall of the movable plate at the bottom of the connecting block is fixedly connected to the top of the lifting mechanism. The telescopic tube is pulled, and the telescopic tube drives the reinforcing rod to slide horizontally. When the reinforcing rod moves horizontally, it slides horizontally in the connecting plate. When the telescopic tube moves horizontally, it slides along the outer wall of the connecting block. The telescopic tube can drive the two mounting rings to move to the position of the vertical line of the cement column. The downward movement of the movable plate will compress the buffer spring with the connecting block. The downward movement of the movable plate will drive the deflection plate to move downward. The downward movement of the deflection plate will drive the guide block to slide horizontally in the guide groove opened in the connecting block. The gravity exerted on the reinforcing rod will be dispersed to the connecting plate. The reinforcing block and the connecting plate disperse the gravity to multiple fulcrums through the reinforcing rod, thereby reducing the rigidity of the mounting structure.

[0010] Preferably, a guide groove for the lateral displacement of the guide block is provided on the top of the connecting block, and a rolling ball is provided at the connection between the inner wall of the guide groove and the guide block. The downward movement of the deflection plate will drive the guide block to slide laterally in the guide groove provided in the connecting block, and the sliding friction is converted into rolling friction under the rolling force of the rolling ball, so that the guide block can slide more smoothly in the connecting block.

[0011] Preferably, the hoisting mechanism includes a buffer plate, a hoisting rod, a limit plate, a hoisting spring and a hoisting plate, the top of the buffer plate is fixedly connected to the outer wall of the movable plate at the bottom of the connecting block, and the inner wall of the buffer plate is provided with a hoisting opening for the hoisting rod to slide up and down, the top of the hoisting rod located at the top of the buffer plate is fixedly connected to the bottom of the limit plate, and the hoisting rod is located at the top of the buffer plate and is movably sleeved on the outer wall at the bottom of the limit plate, the top of the hoisting spring abuts against the bottom movable rod of the limit plate, and the hoisting spring The bottom end of the lifting rod is movably abutted against the top of the buffer plate, and the bottom end of the lifting rod is located at the bottom of the buffer plate and is fixedly connected to the top of the lifting plate. The lifting plate is provided with a mounting hole for installing the low-voltage integrated distribution box. The low-voltage integrated distribution box is installed on the lifting plate. After the lifting plate is subjected to force, it will drive the lifting rod to move downward, and the lifting rod drives the limit plate to move downward. The downward movement of the limit plate will compress the lifting spring with the buffer plate and finally drive the buffer plate to move downward, thereby reducing the rigid force exerted by the low-voltage integrated distribution box on the lifting plate at one time.

[0012] Preferably, the center line of the reinforcement block coincides with the center line of the connecting plate, and the number of the reinforcement blocks is three, and the three reinforcement blocks are equidistantly arranged at one end of the closed end of the telescopic slot. The reinforcement block and the connecting plate disperse the gravity to multiple fulcrums through the reinforcement rod, thereby reducing the rigid force of the installation structure.

[0013] Preferably, the inner wall of the sliding groove is provided with a protrusion, and the support block can be limited by the protrusion after sliding to the limit in the sliding groove. The support block can slide inside the top mounting plate, and when the support block moves to the limit in the sliding groove, it can be stuck by the protrusion to prevent further displacement of the support block, thereby making the connection between the top mounting plate and the support block more stable.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The cam is pressed downwards to release the spring which in turn pushes the lever back into position, and the cam is pressed downwards to release the spring which in turn pushes the lever back into position, thereby reducing the force exerted by the cam on the lever and the load.

[0016] In the present invention, the telescopic tube is pulled according to the spacing between the two concrete columns, causing the reinforcing rod to slide laterally. The reinforcing rod slides laterally within the connecting plate during transverse movement, and the telescopic tube slides along the outer wall of the connecting block during transverse movement. The telescopic tube can then drive the two mounting rings to the position of the vertical midline of the concrete column. The adjusting block is then pulled, causing the adjusting block to slide within the fixed block. When the inner wall of the mounting ring abuts the outer wall of the concrete column, the mounting ring is fixed to the outer wall of the concrete column by bolts. When the adjusting block stops moving, the pin in the fixed block is inserted into the adjusting block under the expansion and contraction force of the positioning spring, preventing the adjusting block from moving within the fixed block. This makes the low-voltage terminal lug connection structure of the distribution transformer applicable to more complex installation environments, expanding the scope of application of the low-voltage terminal lug connection structure of the distribution transformer.

[0017] In the present invention, the water diversion blocks arranged on both sides of the top mounting plate can guide rainwater falling on the top mounting plate out, thereby preventing rainwater from accumulating on the top mounting plate for a long time and causing irreversible erosion to the connection between the oil-immersed distribution transformer and the top mounting plate, thereby bringing convenience to the staff in the later disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a cross-sectional view of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 A magnified view of the structure at center A;

[0022] Figure 5 This is a schematic diagram of the connection relationship between the telescopic mechanism and the mounting mechanism of the present invention;

[0023] Figure 6 Schematic diagram of the connection relationship between the buffer mechanism and the lifting mechanism of the present invention;

[0024] Figure 7 For the present invention Figure 6 A magnified view of the structure at point B in the middle;

[0025] Figure 8 It is a structural schematic diagram of the lifting mechanism of the present invention.

[0026] In the figure: 1. Top mounting plate; 2. Water diversion block; 3. Support block; 4. Telescopic mechanism; 401. Telescopic tube; 402. Reinforcement block; 403. Reinforcement rod; 5. Mounting mechanism; 501. Fixed block; 502. Adjustment block; 503. Mounting ring; 6. Buffer mechanism; 601. Connecting block; 602. Connecting plate; 603. Movable plate; 604. Buffer spring; 605. Deflection plate; 606. Guide block; 7. Hoisting mechanism; 701. Buffer plate; 702. Hoisting rod; 703. Limiting plate; 704. Hoisting spring; 705. Hoisting plate. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] See also Figures 1 to 8 The present invention provides a technical solution: a low-voltage terminal lug connection structure for a distribution transformer, comprising a top mounting plate 1, the inner wall of the top mounting plate 1 is provided with bolt holes for installing an oil-immersed distribution transformer, water diversion blocks 2 capable of guiding rainwater are fixedly installed on both sides of the top mounting plate 1, a sliding groove for sliding a support block 3 is provided at the bottom of the top mounting plate 1, the bottom of the support block 3 is fixedly connected to the top of a telescopic mechanism 4, the bottom of the telescopic mechanism 4 is fixedly connected to the top of a mounting mechanism 5, the inner wall of the telescopic mechanism 4 is slidably connected to the outer wall of a buffer mechanism 6, the telescopic mechanism 4 can slide linearly along the outer wall of the buffer mechanism 6, and the bottom of the buffer mechanism 6 is fixedly connected to the top of a lifting mechanism 7.

[0029] In this embodiment, Figures 1 to 8As shown, the telescopic mechanism 4 includes a telescopic tube 401, a reinforcement block 402 and a reinforcement rod 403. The inner wall of the telescopic tube 401 is provided with a telescopic groove for the telescopic sliding of the buffer mechanism 6, and the inner wall of the telescopic groove is fixedly connected to the outer wall of the reinforcement block 402. The inner wall of the reinforcement block 402 is fixedly connected to the reinforcement rod 403. The outer wall of the reinforcement rod 403 is slidably plugged into the inner wall of the buffer mechanism 6, and the top of the telescopic tube 401 close to the buffer mechanism 6 is fixedly connected to the bottom of the support block 3, and the telescopic tube 401 is away from the buffer mechanism. The bottom of one side of the structure 6 is fixedly connected to the top of the mounting structure 5. The gravity exerted by the oil-immersed distribution transformer acts directly on the telescopic tube 401 through the support block 3. The gravity exerted on the telescopic tube 401 is dispersed to the reinforcement block 402 and the reinforcement rod 403. The reinforcement block 402 can provide multi-point dispersed support for the reinforcement rod 403, so that the rigid force exerted on the telescopic tube 401 can be dispersed to the reinforcement rod 403. The gravity exerted on the telescopic tube 401 is dispersed to the reinforcement block 402 and the reinforcement rod 403.

[0030] In this embodiment, Figures 1 to 8 As shown, the mounting mechanism 5 includes a fixing block 501, an adjusting block 502 and a mounting ring 503. The top of the fixing block 501 is fixedly connected to the bottom of the telescopic tube 401 away from the buffer mechanism 6, and the inner wall of the fixing block 501 is provided with an adjusting port for the adjusting block 502 to be extended and retracted. A fixing plate is provided on one side of the adjusting block 502, and the fixing plate is larger than the adjusting port. The side of the adjusting block 502 away from the fixing plate is fixedly connected to the outer wall of the mounting ring 503. By pulling the adjusting block 502, the adjusting block 502 can slide linearly in the fixing block 501. When the inner wall of the mounting ring 503 abuts the outer wall of the cement column, the mounting ring 503 is fixed to the outer wall of the cement column by bolts. When the adjusting block 502 stops moving, the pin in the fixing block 501 will be inserted into the adjusting block 502 under the extension and contraction force of the positioning spring, preventing the adjusting block 502 from moving in the fixing block 501, so that the mounting mechanism 5 can be applied to cement columns of different diameters.

[0031] In this embodiment, Figures 1 to 8 As shown, a positioning groove is provided on the inner wall of the fixed block 501, and a positioning spring is provided on the inner top wall of the positioning groove. The other end of the positioning spring is fixedly connected to the latch, and the outer wall of the latch is movably plugged into the inner wall of the adjusting block 502. The latch can position the adjusting block 502. When the adjusting block 502 slides in the fixed block 501, the latch will be lifted to compress the positioning spring. When the adjusting block 502 stops moving, the latch in the fixed block 501 will be inserted into the adjusting block 502 under the telescopic force of the positioning spring, thereby avoiding after the adjustment is completed.

[0032] In this embodiment, Figures 1 to 8As shown, the buffer mechanism 6 includes a connecting block 601, a connecting plate 602, a movable plate 603, a buffer spring 604, a deflection plate 605 and a guide block 606. The inner wall of the connecting block 601 is provided with a connecting groove, and the inner wall of the connecting groove is fixedly installed with the connecting plate 602. The outer wall of the connecting plate 602 is slidably plugged with the outer wall of the reinforcing rod 403, and the outer wall of the connecting block 601 is slidably plugged with the inner wall of the telescopic tube 401. The center of the connecting block 601 is provided with a groove for the movable plate 603 to slide up and down. The movable opening is movable, and the interior of the movable plate 603 is provided with a buffer opening for the deformation and storage of the buffer spring 604. The inner top wall of the buffer opening is fixedly connected to one end of the buffer spring 604, and the other end of the buffer spring 604 is fixedly connected to the top of the connecting block 601. The outer wall of the top of the movable plate 603 is rotatably connected to the inner wall of one side of the deflection plate 605, and the inner wall of the other side of the deflection plate 605 is rotatably connected to the outer wall of the guide block 606. The outer wall of the guide block 606 near the bottom is connected to the connecting block 601. The inner wall of the block 601 is slidably connected, and the outer wall of the movable plate 603 at the bottom of the connecting block 601 is fixedly connected to the top of the lifting mechanism 7. When the telescopic tube 401 is pulled, the telescopic tube 401 drives the reinforcing rod 403 to slide horizontally. When the reinforcing rod 403 moves horizontally, it slides horizontally in the connecting plate 602. When the telescopic tube 401 moves horizontally, it slides along the outer wall of the connecting block 601. The telescopic tube 401 can drive the two mounting rings 503 to move to the position of the vertical line of the concrete column. The downward movement of the movable plate 603 will compress the buffer spring 604 with the connecting block 601. The downward movement of the movable plate 603 will drive the deflection plate 605 to move downward. The downward movement of the deflection plate 605 will drive the guide block 606 to slide horizontally in the guide groove provided in the connecting block 601. The gravity exerted on the reinforcing rod 403 will be dispersed on the connecting plate 602. The reinforcing block 402 and the connecting plate 602 disperse the gravity to multiple fulcrums through the reinforcing rod 403, thereby reducing the rigidity of the mounting structure.

[0033] In this embodiment, Figures 1 to 8 As shown, a guide groove for the lateral displacement of the guide block 606 is provided on the top of the connecting block 601, and a rolling ball is provided at the connection between the inner wall of the guide groove and the guide block 606. The downward movement of the deflection plate 605 will drive the guide block 606 to slide horizontally in the guide groove provided in the connecting block 601. Under the rolling force of the rolling ball, the sliding friction is converted into rolling friction, so that the guide block 606 can slide more smoothly in the connecting block 601.

[0034] In this embodiment, Figures 1 to 8As shown, the lifting mechanism 7 includes a buffer plate 701, a lifting rod 702, a limiting plate 703, a lifting spring 704 and a lifting plate 705. The top of the buffer plate 701 is fixedly connected to the outer wall of the movable plate 603 at the bottom of the connecting block 601, and the inner wall of the buffer plate 701 is provided with a lifting opening for the lifting rod 702 to slide up and down. The top of the lifting rod 702 at the top of the buffer plate 701 is fixedly connected to the bottom of the limiting plate 703, and the lifting rod 702 is located at the top of the buffer plate 701 and is located at the bottom of the limiting plate 703. The outer wall is movably connected with a lifting spring 704, the top of the lifting spring 704 abuts against the bottom movable rod of the limiting plate 703, and the lifting spring The bottom end of the spring 704 is movably abutted against the top of the buffer plate 701, and the bottom end of the lifting rod 702 is located at the bottom of the buffer plate 701 and is fixedly connected to the top of the lifting plate 705, and the lifting plate 705 is provided with an installation hole for installing the low-voltage integrated distribution box. The low-voltage integrated distribution box is installed on the lifting plate 705. After the lifting plate 705 is subjected to force, it will drive the lifting rod 702 to move downward, and the lifting rod 702 will drive the limit plate 703 to move downward. The downward movement of the limit plate 703 will compress the lifting spring 704 with the buffer plate 701 and finally drive the buffer plate 701 to move downward, thereby reducing the rigid force exerted by the low-voltage integrated distribution box on the lifting plate 705.

[0035] In this embodiment, Figures 1 to 8 As shown, the center line of the reinforcing block 402 coincides with the center line of the connecting plate 602, and the number of the reinforcing blocks 402 is three, and the three reinforcing blocks 402 are equidistantly arranged at one end of the closed end of the telescopic slot. The reinforcing block 402 and the connecting plate 602 disperse the gravity to multiple fulcrums through the reinforcing rod 403, thereby reducing the rigid force of the mounting structure.

[0036] In this embodiment, Figures 1 to 8 As shown, the inner wall of the sliding groove is provided with a protrusion, and the support block 3 can be limited by the protrusion after sliding to the limit in the sliding groove. The support block 3 can slide inside the top mounting plate. When the support block 3 moves to the limit in the sliding groove, it can be stuck by the protrusion to prevent the support block 3 from further displacement, making the connection between the top mounting plate 1 and the support block 3 more stable.

[0037] The use method and advantages of the present invention: When the low-voltage terminal lug connection structure of the distribution transformer is in operation, the working process is as follows:

[0038] like Figures 1 to 8As shown, according to the distance between the two concrete pillars, the telescopic tube 401 is pulled, and the telescopic tube 401 drives the reinforcing rod 403 to slide horizontally. When the reinforcing rod 403 moves horizontally, it slides horizontally in the connecting plate 602. When the telescopic tube 401 moves horizontally, it slides along the outer wall of the connecting block 601. The telescopic tube 401 can drive the two mounting rings 503 to move to the position of the vertical line of the concrete pillar, and the adjusting block 502 is pulled. The adjusting block 502 can slide linearly in the fixed block 501. When the inner wall of the mounting ring 503 abuts the outer wall of the concrete pillar, the two mounting rings 503 are fixed to the outer wall of the concrete pillar by bolts. When the adjusting block 502 stops moving, the pin in the fixed block 501 will be inserted into the adjusting block 502 under the telescopic force of the positioning spring, preventing the adjusting block 502 from moving in the fixed block 501.

[0039] The oil-immersed distribution transformer is mounted on the top mounting plate 1. The gravity exerted by the oil-immersed distribution transformer acts directly on the telescopic tube 401 through the support block 3. The gravity exerted on the telescopic tube 401 is dispersed to the reinforcement block 402 and the reinforcement rod 403. The gravity exerted on the reinforcement rod 403 is dispersed to the connecting plate 602. The reinforcement block 402 and the connecting plate 602 disperse the gravity to multiple points of force through the reinforcement rod 403, thereby reducing the rigidity of the mounting structure.

[0040] The low-voltage integrated distribution box is installed on the hanging plate 705. After the hanging plate 705 is subjected to force, it will drive the hanging rod 702 to move downward, and the hanging rod 702 will drive the limit plate 703 to move downward. The downward movement of the limit plate 703 will compress the hanging spring 704 with the buffer plate 701 and finally drive the buffer plate 701 to move downward, thereby reducing the rigid force applied by the low-voltage integrated distribution box to the hanging plate 705 at one time. When the buffer plate 701 moves downward, it will drive the movable plate 603 to move downward. The downward movement of the movable plate 603 will compress the buffer spring 604 with the connecting block 601. The downward movement of the movable plate 603 will drive the deflection plate 605 to move downward. The downward movement of the deflection plate 605 will drive the guide block 606 to slide horizontally in the guide groove opened in the connecting block 601, thereby reducing the rigid force applied by the installation of the low-voltage integrated distribution box to the installation structure for a second time.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-voltage terminal lug connection structure for a distribution transformer, comprising a top mounting plate (1), wherein the inner wall of the top mounting plate (1) is provided with bolt holes for mounting an oil-immersed distribution transformer, water diversion blocks (2) capable of guiding rainwater are fixedly mounted on both sides of the top mounting plate (1), and a sliding groove for sliding a support block (3) is provided at the bottom of the top mounting plate (1), characterized in that: The bottom of the support block (3) is fixedly connected to the top of the telescopic mechanism (4), the bottom of the telescopic mechanism (4) is fixedly connected to the top of the mounting mechanism (5), the inner wall of the telescopic mechanism (4) is slidably connected to the outer wall of the buffer mechanism (6), the telescopic mechanism (4) can slide linearly along the outer wall of the buffer mechanism (6), and the bottom of the buffer mechanism (6) is fixedly connected to the top of the hoisting mechanism (7).

2. A low-voltage terminal lug connection structure for a distribution transformer according to claim 1, characterized in that: The telescopic mechanism (4) comprises a telescopic tube (401), a reinforcement block (402) and a reinforcement rod (403); the inner wall of the telescopic tube (401) is provided with a telescopic groove for the buffer mechanism (6) to telescope and slide, and the inner wall of the telescopic groove is fixedly connected to the outer wall of the reinforcement block (402); the inner wall of the reinforcement block (402) is fixedly connected to the reinforcement rod (403); the outer wall of the reinforcement rod (403) is slidably plugged into the inner wall of the buffer mechanism (6); the top of the telescopic tube (401) on the side close to the buffer mechanism (6) is fixedly connected to the bottom of the support block (3); and the bottom of the telescopic tube (401) on the side away from the buffer mechanism (6) is fixedly connected to the top of the mounting mechanism (5).

3. A low-voltage terminal lug connection structure for a distribution transformer according to claim 2, characterized in that: The mounting mechanism (5) comprises a fixed block (501), an adjusting block (502) and a mounting ring (503); the top of the fixed block (501) is fixedly connected to the bottom of the telescopic tube (401) on a side away from the buffer mechanism (6); an adjusting opening for the adjusting block (502) to be extended and retracted is provided on the inner wall of the fixed block (501); a fixed plate is provided on one side of the adjusting block (502), and the fixed plate is larger than the adjusting opening; and the side of the adjusting block (502) away from the fixed plate is fixedly connected to the outer wall of the mounting ring (503).

4. A low-voltage terminal lug connection structure for a distribution transformer according to claim 3, characterized in that: The inner wall of the fixed block (501) is provided with a positioning groove, and the inner top wall of the positioning groove is provided with a positioning spring, the other end of the positioning spring is fixedly connected to the latch, and the outer wall of the latch is movably connected to the inner wall of the adjustment block (502), and the latch can position the adjustment block (502).

5. The low-voltage terminal lug connection structure for a distribution transformer according to claim 2, characterized in that: The buffer mechanism (6) comprises a connecting block (601), a connecting plate (602), a movable plate (603), a buffer spring (604), a deflection plate (605) and a guide block (606); a connecting groove is provided on the inner wall of the connecting block (601), and a connecting plate (602) is fixedly installed on the inner wall of the connecting groove; the outer wall of the connecting plate (602) is slidably connected with the outer wall of the reinforcing rod (403), and the outer wall of the connecting block (601) is slidably connected with the inner wall of the telescopic tube (401); a movable opening for the movable plate (603) to slide up and down is provided at the center of the connecting block (601), and a movable opening is provided inside the movable plate (603) A buffer opening is provided for the buffer spring (604) to deform and store force, the inner top wall of the buffer opening is fixedly connected to one end of the buffer spring (604), and the other end of the buffer spring (604) is fixedly connected to the top of the connecting block (601), the outer wall of the top of the movable plate (603) is rotatably connected to the inner wall of one side of the deflection plate (605), and the inner wall of the other side of the deflection plate (605) is rotatably connected to the outer wall of the guide block (606), the outer wall of the guide block (606) near the bottom is slidably connected to the inner wall of the connecting block (601), and the outer wall of the movable plate (603) located at the bottom of the connecting block (601) is fixedly connected to the top of the lifting mechanism (7).

6. A low-voltage terminal lug connection structure for a distribution transformer according to claim 5, characterized in that: A guide groove for lateral displacement of the guide block (606) is provided on the top of the connecting block (601), and a rolling ball is provided at the connection between the inner wall of the guide groove and the guide block (606).

7. The low-voltage terminal lug connection structure for a distribution transformer according to claim 1, characterized in that: The hoisting mechanism (7) comprises a buffer plate (701), a hoisting rod (702), a limit plate (703), a hoisting spring (704) and a hoisting plate (705); the top of the buffer plate (701) is fixedly connected to the outer wall of the movable plate (603) located at the bottom of the connecting block (601); and the inner wall of the buffer plate (701) is provided with a hoisting opening for the hoisting rod (702) to slide up and down; the top end of the hoisting rod (702) located at the top of the buffer plate (701) is fixedly connected to the bottom of the limit plate (703); and the hoisting rod ( A hanging spring (704) is movably sleeved on the outer wall of the top of the buffer plate (701) and the bottom of the limit plate (703), the top of the hanging spring (704) is in contact with the bottom movable rod of the limit plate (703), and the bottom of the hanging spring (704) is in contact with the top of the buffer plate (701), the bottom end of the hanging rod (702) located at the bottom of the buffer plate (701) is fixedly connected to the top of the hanging plate (705), and the hanging plate (705) is provided with a mounting hole for installing a low-voltage integrated distribution box.

8. The low-voltage terminal lug connection structure for a distribution transformer according to claim 5, characterized in that: The center line of the reinforcing block (402) coincides with the center line of the connecting plate (602), and there are three reinforcing blocks (402), which are equidistantly arranged at one end of the closed end of the telescopic slot.

9. The low-voltage terminal lug connection structure for a distribution transformer according to claim 5, characterized in that: The inner wall of the sliding groove is provided with a protrusion, and the support block (3) can be limited by the protrusion after sliding to the limit in the sliding groove.

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