Assembly type power distribution cabinet convenient to overhaul

Abstract

The invention relates to the technical field of power distribution cabinet equipment, in particular to an assembly type power distribution cabinet convenient to overhaul, which comprises a cabinet body, two side plates are symmetrically clamped and fixed on two sides of the cabinet body, one side of each side plate is rotatably connected with a cabinet door, the other side of each side plate is provided with an accommodating groove, and the interior of each accommodating groove is rotatably connected with a storage plate. A movable clamping mechanism is installed between the side plate and the storage plate, and two positioning blocks are symmetrically fixed to the rear end of the interior of the cabinet body; the first moving wheels are controlled to be freely stored and placed through the moving clamping mechanisms, so that overall movement of the side plates is facilitated, redundant manpower and material resources do not need to be consumed for carrying, meanwhile, the side plates are fixed when the first moving wheels are stored and placed, stable assembling between the side plates and the cabinet body is guaranteed, and the assembling efficiency is improved. And the locking assembly is matched to prevent the storage plate from popping up to cause potential safety hazards and damage, and the connecting plate is used for fixing the mounting plate, so that the mounting plate is convenient to fix and disassemble, and the electronic elements are more quickly overhauled and replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinet equipment, and in particular to an assembled power distribution cabinet which is easy to maintain. Background Art

[0002] With the continuous development of power systems and the acceleration of urbanization, the importance of distribution systems in power transmission and distribution is increasing. Traditional distribution cabinets usually adopt fixed structures, which often have problems such as small space and complicated wiring during installation and maintenance. In addition, it is difficult to maintain and replace parts during long-term use. This not only increases the workload of maintenance, but also affects the reliability and safety of the distribution system. When assembling and installing the assembled power distribution cabinets in the prior art, most of them require a lot of manpower and material resources to carry the separated cabinet components, which makes it difficult to transport the cabinet components conveniently. It also makes it difficult to quickly move the cabinet side panels and other components during disassembly, which is inconvenient for subsequent maintenance of the cabinet. At the same time, after the cabinet is disassembled, the internal mounting plate and the cabinet are usually still in a solid state and need to be disassembled separately, which is inconvenient. In view of the above technical defects, a solution is now proposed. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an assembled power distribution cabinet which is easy to maintain. The side panels can be conveniently moved by moving the snap-fitting components, and can be quickly tightly installed and fixed with the cabinet body. In combination with the snap-fitting fixing method between the mounting plate and the cabinet body, the mounting plate can be removed while the side panels are disassembled, which facilitates the subsequent maintenance of the electronic components, thereby solving the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an assembled distribution cabinet that is easy to maintain, including a cabinet body, two side panels are symmetrically fixed on both sides of the cabinet body, one side of the side panel is rotatably connected to a cabinet door, and the other side of the side panel is provided with a receiving groove, the interior of the receiving groove is rotatably connected to a storage plate, a movable locking mechanism is installed between the side panel and the storage plate, two positioning blocks are symmetrically fixed to the inner rear end of the cabinet body, and an installation plate is arranged inside the cabinet body, a limiting block is fixed at the rear end of the installation plate corresponding to the middle position of the two positioning blocks, and the installation plate is fixed to the inner rear end of the cabinet body by engaging with the positioning block through the limiting block.

[0005] Further, the movable engaging mechanism includes a second bevel gear rotatably connected inside the receiving groove. Two first bevel gears are symmetrically meshed on both sides of the second bevel gear. An embedding groove is formed on one side of the second bevel gear. A rotating shaft rotatably connected inside the side plate is fixed on one side of the first bevel gear. A worm is sleeved on the outer layer of the rotating shaft. A worm gear is meshed on one side of the worm. A lead screw rotatably connected inside the cabinet body penetrates through the worm gear.

[0006] Further, two special-shaped plates are symmetrically sleeved on the upper and lower ends of the outer layer of the lead screw. The special-shaped plate is in a "U" shape structure. A sleeve is sleeved on the outer layer of the bottom of the lead screw. The bottom of the sleeve penetrates through and extends outside the side plate and is fixed with a first moving wheel.

[0007] Further, a receiving groove is formed at the position corresponding to the rotating shaft on the inner side of the receiving plate. A locking assembly is installed between the receiving plate and the side plate. The bottom end of the receiving plate is rotatably connected with a second connecting plate. A second moving wheel is rotatably connected to the bottom of the second connecting plate. One side of the second connecting plate is rotatably connected with a first connecting plate. One side of the first connecting plate is rotatably connected inside the receiving plate. A placing groove is formed at the position corresponding to the second moving wheel inside the receiving plate.

[0008] Further, the locking assembly includes a fixed disk fixed inside the receiving plate. Two clamping blocks are slidably connected inside the fixed disk. A connecting rod is rotatably connected inside the fixed disk. A docking block and a knob are respectively fixed on both sides of the connecting rod. The embedding groove is adapted to the docking block.

[0009] Further, a rotating disk is rotatably connected to one side of the fixed disk. Two arc-shaped sliding grooves are symmetrically formed inside the rotating disk. A guiding slider is slidably connected inside the arc-shaped sliding groove. One side of the guiding slider is fixedly connected with the clamping block. Card slots are formed at the positions corresponding to the clamping blocks on both sides inside the receiving plate.

[0010] Further, two groups of fixed blocks are symmetrically fixed on both sides of the bottom layer and the top layer inside the cabinet body. A slot adapted to the first connecting plate is formed inside the fixed block. Notches are formed at the positions corresponding to the fixed blocks at the upper and lower ends of the side plate.

[0011] Further, the positioning block is in a "C" shape structure. A through groove is formed at the position corresponding to the opening of the positioning block inside the limiting block. An adapter plate is rotatably connected to one side of the side plate corresponding to the positioning block.

[0012] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are: 1. The present invention is composed of a side panel, a cabinet door and a cabinet body. The side panel is provided with a movable locking mechanism. When the side panel is assembled, the first moving wheel and the second moving wheel are used to push the side panel to move to the cabinet body position until the notch is fitted with the fixed block, and the storage plate is received in the receiving groove. The docking block is engaged with the embedded groove, and the knob is rotated to drive the first moving wheel to move into the side panel, and at the same time, the special-shaped plate is inserted into the slot to form a locked state. At this time, the cabinet assembly is completed, the side panel is easy to move, and no extra manpower and financial resources are required to carry the side panel, and the assembly can be carried out quickly; 2. In the present invention, during the assembly process, rotating the knob drives the rotating disk to rotate at the same time, thereby cooperating with the arc-shaped slide groove and the guide slider to drive the card block to move and engage with the card groove to form a locked state, thereby preventing the storage plate from popping out and causing damage or safety hazards.

[0013] 3. In the present invention, during assembly, the connecting plate on the inner side of the side panel is inserted into the through groove as it moves, and simultaneously forms a snap-fitting state with the positioning plate and the limit plate, thereby ensuring that the mounting plate is firmly fixed inside the cabinet. When performing maintenance and disassembly, the side panel is removed to release the fixation of the mounting plate, which facilitates the overall disassembly of the mounting plate and is more conducive to the subsequent maintenance and replacement of the electronic equipment.

[0014] To summarize, the present invention relies on a mobile locking mechanism to control the free retraction and placement of the first moving wheel, thereby facilitating the overall movement of the side panel without consuming extra manpower and material resources for transportation. At the same time, the side panel is fixed when the first moving wheel is retracted and placed to ensure stable assembly between the side panel and the cabinet body. A locking assembly is used to prevent the storage panel from popping out and causing safety hazards and damage, and the connecting plate is used to fix the mounting plate, which is convenient for fixing and disassembly of the mounting plate, thereby more quickly repairing and replacing electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a combined view of the side panel and the cabinet door of the present invention; Figure 3 It is a schematic diagram of the structure of the storage plate of the present invention being pulled out; Figure 4 It is a schematic diagram of the structure inside the receiving tank of the present invention; Figure 5 It is a structural schematic diagram of the mobile engaging mechanism of the present invention; Figure 6 It is a structural schematic diagram of the locking assembly of the present invention; Figure 7 It is a structural schematic diagram of the connection plate of the present invention; Figure 8 It is a schematic diagram of the structure inside the cabinet of the present invention; Fig. 9 This is a combined view of the cabinet and the mounting plate of the present invention.

[0016] 1. The first movable wheel is provided with a plurality of locking members, each of which is provided with a plurality of locking members. The locking members are provided with a plurality of locking members, each of which is provided with a plurality of locking members. The locking members are provided with a plurality of locking members, each of which is provided with a plurality of locking members. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0018] This embodiment aims to address the problem that in the prior art, most anti-theft transformers are placed in a protective box for fixing and sealing to achieve an anti-theft effect. However, the anti-theft fixing and disassembly processes require excessive manual intervention, making it difficult to achieve a self-locking effect by placing the transformer into the box, which is generally inconvenient.

[0019] like Figure 1-5 As shown, an assembled power distribution cabinet that is easy to maintain includes a cabinet body 1, two side panels 2 are symmetrically clamped and fixed on both sides of the cabinet body 1, one side of the side panel 2 is rotatably connected to a cabinet door 3, and the other side of the side panel 2 is provided with a receiving groove 14, the interior of the receiving groove 14 is rotatably connected to a receiving plate 5, and a movable clamping mechanism 4 is installed between the side panel 2 and the receiving plate 5; The mobile engaging mechanism 4 includes a second bevel gear 23 rotatably connected to the inside of the receiving groove 14, two first bevel gears 19 are symmetrically meshed and connected to the two sides of the second bevel gear 23, and a groove 24 is provided on one side of the second bevel gear 23, a rotating shaft 15 rotatably connected to the inside of the side plate 2 is fixed to one side of the first bevel gear 19, a worm 20 is sleeved on the outer layer of the rotating shaft 15, a worm wheel 25 is meshed and connected to one side of the worm 20, and a screw 21 rotatably connected to the inside of the cabinet 1 is penetrated inside the worm wheel 25; Two special-shaped plates 18 are symmetrically sleeved on the upper and lower ends of the outer layer of the lead screw 21. The special-shaped plate 18 is in a "凵"-shaped structure. A sleeve 22 is sleeved on the outer layer of the bottom of the lead screw 21. The bottom of the sleeve 22 penetrates and extends to the outside of the side plate 2 and is fixed with a first moving wheel 8. The threads inside the top special-shaped plate 18 are the same as the threads inside the sleeve 22, and the threads inside the bottom special-shaped plate 18 are opposite to the threads inside the sleeve 22; A storage groove 9 is opened at the position corresponding to the rotating shaft 15 on the inner side of the storage plate 5. The bottom end of the storage plate 5 is rotatably connected with a second connecting plate 11. The bottom of the second connecting plate 11 is rotatably connected with a second moving wheel 12. And one side of the second connecting plate 11 is rotatably connected with a first connecting plate 10. The first connecting plate 10 and the second connecting plate 11 can only be folded and flipped upwards. One side of the first connecting plate 10 is rotatably connected to the inside of the storage plate 5. A placement groove 16 is opened at the position corresponding to the second moving wheel 12 inside the storage plate 5; Two groups of fixing blocks 34 are symmetrically fixed on both sides of the inner bottom layer and the top layer of the cabinet body 1. A slot 36 adapted to the first connecting plate 10 is opened inside the fixing block 34. Notches 31 are opened at the upper and lower ends of the side plate 2 corresponding to the positions of the fixing blocks 34. The side plate 2 is preliminarily fixed through the preliminary engagement formed by the notch 31 and the fixing block 34.

[0020] During installation, the side plate 2 is pushed to both sides of the cabinet body 1. Subsequently, the storage plate 5 is pushed to be received inside the receiving groove 14 in cooperation with the folding effect of the first connecting plate 10 and the second connecting plate 11. At this time, the second moving wheel 12 is received inside the placement groove 16; When the storage plate 5 is completely received inside the receiving groove 14, the docking block 27 and the embedding groove 24 are engaged. Subsequently, the knob 7 is rotated to drive the docking block 27 to rotate through the connecting rod 38. The rotation of the docking block 27 drives the second bevel gear 23 to rotate, and two first bevel gears 19 are used to drive the two placement grooves 16 to rotate. During the rotation of the placement groove 16, the lead screw 21 is driven to rotate in cooperation with the worm 20 and the worm gear 25. The rotation of the lead screw 21 drives the sleeve 22 to rise and be received inside the side plate 2. At this time, the storage plate 5 is completely pushed into the cabinet body 1, and a preliminary engagement is formed through the notch 31 and the fixing block 34; As the lead screw 21 continues to rotate, the upper and lower groups of special-shaped plates 18 are all moved out of the side plate 2 and inserted into the slot 36 until a stable engagement effect is formed between the side plate 2 and the cabinet body 1. When the side plate 2 needs to be removed, the knob 7 is rotated in the reverse direction, and there is no need for extra manpower and material resources to carry the side plate 2, and the assembly is more convenient. Embodiment

[0021] This embodiment aims at the problem that when a theft-proof transformer in the prior art needs to be overhauled, workers need to enter the box body, and the internal space of the box body is often relatively narrow, which is not convenient for overhaul.

[0022] Such as Figure 6As shown, the embodiment is an assembled power distribution cabinet that is easy to repair, and a locking assembly 6 is installed between the storage plate 5 and the side plate 2. The locking assembly 6 includes a fixed plate 26 fixed inside the storage plate 5, and two clamping blocks 13 are slidably connected inside the fixed plate 26, and a connecting rod 38 is rotatably connected inside the fixed plate 26. The two sides of the connecting rod 38 are respectively fixed with a docking block 27 and a knob 7, and the embedded groove 24 and the docking block 27 are adapted to each other, and the embedded groove 24 and the docking block 27 are engaged with each other, so that when the docking block 27 rotates, the second bevel gear 23 is driven to rotate; One side of the fixed disk 26 is rotatably connected to a rotating disk 29, a connecting rod 38 is fixedly connected to the rotating disk 29, two arc-shaped slide grooves 28 are symmetrically provided inside the rotating disk 29, a guide slider 30 is slidably connected inside the arc-shaped slide groove 28, one side of the guide slider 30 is fixedly connected to the card block 13, and card grooves 17 are provided at the positions of the card blocks 13 on both sides of the inside of the storage plate 5.

[0023] When the storage plate 5 is stored, the connecting rod 38 is used to drive the rotating disk 29 to rotate during the process of rotating the knob 7. The rotating disk 29 rotates to cooperate with the arc-shaped slide groove 28 and the guide slider 30 to drive the card block 13 to move out of the fixed disk 26, and the card block 13 continues to move until it is inserted into the card slot 17 to form a card lock, thereby avoiding popping out during normal use of the distribution cabinet, thereby causing safety hazards and damage. Example

[0024] This embodiment aims to solve the problem in the prior art that when an emergency occurs, it is difficult to quickly dismantle the anti-theft transformer, which may lead to serious consequences.

[0025] like Figure 7-9 As shown, the embodiment is an assembled power distribution cabinet that is easy to repair, and two positioning blocks 35 are symmetrically fixed at the rear end of the cabinet body 1, and a mounting plate 33 is arranged inside the cabinet body 1, and a limiting block 37 is fixed at the rear end of the mounting plate 33 corresponding to the middle position of the two positioning blocks 35, and the mounting plate 33 is fixed to the rear end of the cabinet body 1 by engaging the limiting block 37 with the positioning block 35; The positioning block 35 has a "C"-shaped structure, and a through groove 39 is provided inside the limit block 37 at a position corresponding to the opening of the positioning block 35. The limit block 37 has an "I"-shaped structure, which forms a snap-fitting effect with the two positioning blocks 35. A connecting plate 32 is rotatably connected to one side of the side panel 2 at a position corresponding to the positioning block 35.

[0026] The mounting plate 33 is initially locked with the cabinet body 1 through the engagement effect between the limit block 37 and the positioning block 35. When the side panel 2 and the cabinet body 1 are engaged, the connecting plate 32 is completely inserted into the through groove 39 as the side panel 2 moves, thereby further locking the mounting plate 33, thereby ensuring the overall stable placement of the mounting plate 33. When the side panel 2 is disassembled, the locking of the mounting plate 33 is released, thereby facilitating the rapid disassembly of the mounting plate 33 and being more conducive to the inspection and replacement of electronic components.

[0027] Working process and principle of the present invention: Step 1: During installation, push the side panels 2 to the positions on both sides of the cabinet 1, and then push the storage panels 5 to fit into the receiving slots 14 in coordination with the folding effect of the first connecting panels 10 and the second connecting panels 11. At this time, the second moving wheels 12 are retracted into the placement slots 16. When the storage plate 5 is completely received in the receiving groove 14, the docking block 27 is engaged with the embedded groove 24, and then the knob 7 is rotated to cooperate with the connecting rod 38 to drive the docking block 27 to rotate, and the second bevel gear 23 is driven to rotate by the rotation of the docking block 27, and the two first bevel gears 19 are used to drive the two placement grooves 16 to rotate. During the rotation of the placement groove 16, the worm 20 and the worm wheel 25 drive the screw rod 21 to rotate, and the screw rod 21 rotates to drive the sleeve 22 to rise and be received in the side plate 2. At this time, the storage plate 5 is completely pushed into the cabinet 1, and forms a preliminary engagement with the fixing block 34 through the notch 31; As the screw rod 21 continues to rotate, the upper and lower sets of special-shaped plates 18 are moved out of the side plate 2 until they are inserted into the slot 36. At this time, a stable engagement effect is formed between the side plate 2 and the cabinet body 1. When the side plate 2 needs to be removed, the knob 7 can be turned in the opposite direction. No extra manpower or material resources are required to carry the side plate 2, and assembly is more convenient. Step 2: When the storage plate 5 is stored, the connecting rod 38 is used to drive the rotating disk 29 to rotate during the process of rotating the knob 7. The rotating disk 29 rotates to cooperate with the arc-shaped slide groove 28 and the guide slider 30 to drive the card block 13 to move out of the fixed disk 26, and the card block 13 continues to move until it is inserted into the card slot 17 to form a card lock, so as to avoid the pop-up situation during the normal use of the daily distribution cabinet, thereby causing safety hazards and damage; Step three: The mounting plate 33 is initially locked with the cabinet body 1 through the engagement effect between the limit block 37 and the positioning block 35. When the side panel 2 and the cabinet body 1 are engaged, the connecting plate 32 is completely inserted into the through groove 39 as the side panel 2 moves, thereby further locking the mounting plate 33, thereby ensuring the overall stable placement of the mounting plate 33. When the side panel 2 is disassembled, the locking of the mounting plate 33 is released, thereby facilitating the rapid disassembly of the mounting plate 33 and facilitating the inspection and replacement of electronic components.

[0028] In summary, the first moving wheel 8 is controlled by the mobile locking mechanism 4. During daily transportation, the side panel 2 is moved by the first moving wheel 8 and the second moving wheel 12, so that the side panel 2 can be quickly moved without external manpower and material resources. At the same time, during assembly, the first moving wheel 8 can be directly retracted into the side panel 2, and the special-shaped plate 18 can be moved out at the same time to form a lock with the slot 36, so as to ensure the stable assembly between the side panel 2 and the cabinet body 1, and the locking component 6 can be used to prevent the storage plate 5 from popping out, thereby avoiding safety hazards and damage. Finally, the effect of driving the connecting plate 32 to be inserted into the through groove 39 during the assembly of the side panel 2 can be used to quickly disassemble and assemble the mounting plate 33, which is convenient for the inspection, replacement and assembly of electronic components.

[0029] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An assembled power distribution cabinet that is easy to maintain, comprising a cabinet body (1), characterized in that: On both sides of the cabinet body (1), two side plates (2) are symmetrically clamped and fixed. On one side of the side plate (2), a cabinet door (3) is rotatably connected. On the other side of the side plate (2), a receiving groove (14) is provided. Inside the receiving groove (14), a receiving plate (5) is rotatably connected. A moving clamping mechanism (4) is installed between the side plate (2) and the receiving plate (5). At the rear end inside the cabinet body (1), two positioning blocks (35) are symmetrically fixed. Inside the cabinet body (1), a mounting plate (33) is provided. At the middle position corresponding to the two positioning blocks (35) at the rear end of the mounting plate (33), a limiting block (37) is fixed. The mounting plate (33) is clamped and fixed to the rear end inside the cabinet body (1) through the limiting block (37) and the positioning block (35).

2. The assembled power distribution cabinet that is easy to maintain according to claim 1 is characterized in that: The moving clamping mechanism (4) includes a second bevel gear (23) rotatably connected inside the receiving groove (14). On both sides of the second bevel gear (23), two first bevel gears (19) are symmetrically meshed. On one side of the second bevel gear (23), an embedding groove (24) is provided. On one side of the first bevel gear (19), a rotating shaft (15) rotatably connected inside the side plate (2) is fixed. The outer layer of the rotating shaft (15) is sleeved with a worm (20). On one side of the worm (20), a worm gear (25) is meshed. Inside the worm gear (25), a lead screw (21) rotatably connected inside the cabinet body (1) penetrates.

3. The assembled power distribution cabinet that is easy to maintain according to claim 2 is characterized in that: On the upper and lower ends of the outer layer of the lead screw (21), two special-shaped plates (18) are symmetrically sleeved. The special-shaped plate (18) has a "U" - shaped structure. On the outer layer of the bottom of the lead screw (21), a sleeve (22) is sleeved. The bottom of the sleeve (22) penetrates and extends to the outside of the side plate (2) and is fixed with a first moving wheel (8).

4. The assembled power distribution cabinet that is easy to maintain according to claim 2 is characterized in that: At the position corresponding to the rotating shaft (15) on the inner side of the receiving plate (5), a receiving groove (9) is provided. A locking component (6) is installed between the receiving plate (5) and the side plate (2). The bottom end of the receiving plate (5) is rotatably connected with a second connecting plate (11). The bottom of the second connecting plate (11) is rotatably connected with a second moving wheel (12). On one side of the second connecting plate (11), a first connecting plate (10) is rotatably connected. One side of the first connecting plate (10) is rotatably connected inside the receiving plate (5). At the position corresponding to the second moving wheel (12) inside the receiving plate (5), a placing groove (16) is provided.

5. The assembled power distribution cabinet that is easy to maintain according to claim 4 is characterized in that: The locking component (6) includes a fixed disk (26) fixed inside the receiving plate (5). Inside the fixed disk (26), two clamping blocks (13) are slidably connected. Inside the fixed disk (26), a connecting rod (38) is rotatably connected. On both sides of the connecting rod (38), a docking block (27) and a knob (7) are respectively fixed. The embedding groove (24) and the docking block (27) are adapted to each other.

6. The assembled power distribution cabinet that is easy to maintain according to claim 5, characterized in that: One side of the fixed disk (26) is rotatably connected to a rotating disk (29), two arc-shaped slide grooves (28) are symmetrically provided inside the rotating disk (29), a guide slider (30) is slidably connected inside the arc-shaped slide groove (28), one side of the guide slider (30) is fixedly connected to a clamping block (13), and clamping grooves (17) are provided at positions corresponding to the clamping block (13) on both sides of the interior of the storage plate (5).

7. The assembled power distribution cabinet that is easy to maintain according to claim 1 is characterized in that: Two groups of fixing blocks (34) are symmetrically fixed on both sides of the bottom layer and the top layer inside the cabinet (1), and slots (36) adapted to the first connecting plate (10) are provided inside the fixing blocks (34), and notches (31) are provided at the upper and lower ends of the side panels (2) at positions corresponding to the fixing blocks (34).

8. The assembled power distribution cabinet that is easy to maintain according to claim 1 is characterized in that: The positioning block (35) is in a "C"-shaped structure, a through slot (39) is provided inside the limit block (37) at a position corresponding to the opening of the positioning block (35), and a connecting plate (32) is rotatably connected to one side of the side plate (2) at a position corresponding to the positioning block (35).

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