Space optimization arrangement structure of power distribution room
By designing a flip-up shield and lifting pedal in the power distribution room, the problem of limited operation in narrow spaces was solved, enabling an efficient and safe maintenance process and shortening the troubleshooting time.
Patent Information
- Application Number
- CN202511439215.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2045-10-10
AI Technical Summary
The narrow space in the power distribution room restricts operation, makes it difficult to use tools, and poses safety hazards for maintenance at heights, thus delaying the troubleshooting time.
An optimized layout structure for a power distribution room was designed, including a flip-up shield, a lifting pedal, and independent lighting. The flip-up shield expands the operating range, the lifting pedal adapts to different heights, and the battery-powered lighting enables efficient use of narrow spaces and safe storage of tools.
It significantly improves the convenience and safety of power distribution room maintenance, shortens fault handling time, and ensures rapid response in emergencies.
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Figure CN120896012A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power distribution room, and particularly relates to a power distribution room space optimization arrangement structure. BACKGROUND
[0002] The power distribution room is a key node of the power system, mainly responsible for receiving and distributing power, controlling the on-off of the circuit through the power distribution cabinet and switch, and monitoring and protecting the power system (such as automatic tripping in case of overload and short circuit) to ensure the safe and stable transmission of power to each power consumption area.
[0003] When the power distribution room is maintained, the narrow space will limit the operation, the body is difficult to stretch, and the equipment is easy to be touched and rubbed to cause the loosening of the wiring and the damage of the components, or even the mis-touching of the live body. When the maintenance is performed at a high place, the climbing or standing on tiptoe operation is easy to be unbalanced and fall due to the lack of stable support, and the components at the high place are often damaged due to the inability to reach or improper force. The tool taking and placing problem is more obvious: the tool bag is difficult to unfold in the narrow space, the tools are easy to roll into the gap of the equipment and are difficult to find back; the taking and placing at the high place needs repeated bending and stretching, which not only wastes time, but also easily causes the tools to fall and damage the equipment or injure people, and the mixed tools are easy to be mistaken, which delays the fault handling, and greatly prolongs the power-off time in the emergency repair. SUMMARY
[0004] The purpose of the present application is to solve the problem of difficult maintenance of the power distribution room in the prior art, and a power distribution room space optimization arrangement structure is provided.
[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A power distribution room space optimization arrangement structure, comprising a power distribution cabinet, a cabinet door is arranged on the power distribution cabinet, and further comprising: A shielding plate is arranged on the cabinet door and is flipped along a vertical shaft, a sealing rubber ring is arranged on the outer side of the shielding plate; A connecting plate is fixedly arranged on one side of the shielding plate in the power distribution cabinet, and a lifting unlocking component is arranged on the connecting plate; A pedal is installed on the connecting plate in a folding storage manner through a connecting component, the lifting unlocking component is used for limiting the state of the pedal and adjusting the height of the pedal to adapt to the required use height of the personnel, the pedal is used for maintaining the structure on the other side of the power distribution cabinet by rotating the shielding plate, and the dynamic expansion of the maintenance space and the adaptation of the operation platform are realized through the cooperation of the sealing of the shielding plate, the folding storage and height adjustment of the pedal, and the bearing of the lifting unlocking component of the connecting plate.
[0006] In the power distribution room space optimization arrangement structure, a rotating hole is arranged on the cabinet door, two fixed ring frames are fixedly installed on the inner side of the cabinet door, a rotating rod is rotatably installed between the two fixed ring frames, and the shielding plate is fixedly arranged on the rotating rod and seals the rotating hole.
[0007] In the power distribution room space optimization arrangement, the upper end of the rotating rod is provided with a locking groove, and two blocking rods are rotatably installed in the locking groove, and the rotating angle of the two blocking rods in the locking groove is 90°, which is rotated from the horizontal state to the vertical state.
[0008] In the power distribution room space optimization arrangement, a plurality of straight rods are arranged on the connecting plate, and the plurality of straight rods are connected by universal shafts, and the upper end of the uppermost straight rod is fixedly installed with a lighting lamp.
[0009] In the power distribution room space optimization arrangement, the lifting unlocking component includes two threaded rods screwed on the connecting plate, one side of the shielding plate is fixedly installed with two mounting rings, two threaded rods are rotatably installed in the corresponding mounting rings, and the two threaded rods are provided with operation components.
[0010] In the power distribution room space optimization arrangement, the operation component includes a through hole formed in the threaded rod, a damping bearing one is installed in the through hole, a center shaft is sleeved in the damping bearing one, the upper end of the center shaft is located above the threaded rod, a limiting hammer is fixedly installed on the upper end of the center shaft, a clamping groove one is formed in the lower end of the center shaft, a rotating groove and a clamping groove two are sequentially formed in the threaded rod in an upward and downward direction, and the rotating groove, the clamping groove two and the through hole are communicated, a rotating ring is slidably installed in the rotating groove, a clamping block one used in cooperation with the clamping groove one is fixedly installed on the upper end of the rotating ring, a clamping block two is fixedly installed on the lower end of the rotating ring and used in the clamping groove two, a sliding column is fixedly installed on the lower end of the clamping block two and used in the through hole, and a knob is fixedly installed on the lower end of the sliding column.
[0011] In the power distribution room space optimization arrangement, the outer sides of the two threaded rods are fixedly installed with sprockets, and a chain is jointly arranged between the two sprockets.
[0012] In the power distribution room space optimization arrangement, the connecting component includes a right-angle plate fixedly arranged on one side of the connecting plate, three hinges are arranged on the pedal, two upper hinges are fixedly provided with support frames, and a resisting plate is fixedly installed on the lowermost hinge.
[0013] In the power distribution room space optimization arrangement, the side of the pedal close to the cabinet door is fixedly installed with a boss and a plurality of limiting plates, a displacement groove is formed in each of the plurality of limiting plates, a sliding block is slidably installed in each displacement groove, a damping bearing two is installed in each sliding block, and a rotating shaft is rotatably sleeved in the damping bearing two.
[0014] In the above-mentioned optimized layout structure of the power distribution room, two sliding plates are slidably installed on the boss, and each of the two sliding plates is provided with a limiting groove for use with a limiting hammer. Each pair of rotating shafts is set on the same sliding plate.
[0015] Compared with existing technologies, the advantages of this invention are as follows: by using a flip-up shield and a foldable foot pedal, the limited space of a narrow electrical room can be utilized efficiently; during maintenance, the flip-up shield expands the operating range, the lifting foot pedal adapts to different heights, and the battery-powered lighting provides precise supplementary lighting according to the operating position, greatly improving the convenience of maintenance; at the same time, maintenance tools can be placed on the horizontal foot pedal, with a sliding plate to prevent them from falling, making them easy to access; for narrow areas, the compact design avoids cramped operation; in emergencies, the structure can be quickly deployed, the lighting is independently powered and does not rely on the main power, and the tools are placed in an orderly manner, which can shorten the repair time and efficiently respond to sudden failures. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a power distribution room space optimization layout structure proposed in this invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the cabinet door structure in this invention; Figure 4 In this invention Figure 3 Enlarged structural diagram of part a; Figure 5 This is a side view of the shielding plate in this invention; Figure 6 This is a schematic diagram of the structure of the lighting lamp and the universal joint in this invention; Figure 7 This is a schematic diagram of the threaded rod and the limiting hammer in this invention; Figure 8 This is a bottom view of the knob in this invention; Figure 9 In this invention Figure 8 Cross-sectional view of the structure along the AA direction; Figure 10 This is a schematic diagram of the skateboard structure in this invention; Figure 11 This is a schematic diagram of the structure of the boss and slider in this invention.
[0017] In the figure: 1, power distribution cabinet; 2, cabinet door; 3, pedal; 4, shielding plate; 5, support frame; 6, rotating rod; 7, blocking rod; 8, fixed ring frame; 9, threaded rod; 10, boss; 11, sliding plate; 12, knob; 13, rotating shaft; 14, stop plate; 15, right angle plate; 16, hinge; 17, connecting plate; 18, limiting plate; 19, light; 20, universal shaft; 21, straight rod; 22, limiting hammer; 23, chain wheel; 24, clamping groove I; 25, rotating groove; 26, clamping block I; 27, rotating ring; 28, clamping block II; 29, sliding column; 30, clamping groove II; 31, damping bearing I; 32, central shaft; 33, limiting groove; 34, sliding block. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0019] Reference Figure 1 - Figure 6 A power distribution room space optimization arrangement structure, comprising a power distribution cabinet 1, the power distribution cabinet 1 is provided with a cabinet door 2, further comprising: a shielding plate 4 is arranged on the cabinet door 2 and is flipped along a vertical shaft, the middle of the shielding plate 4 is made of metal material to maintain its firmness, rubber pads are installed on both sides of the shielding plate 4 to achieve insulation and prevent electric conduction, ensuring the safety of workers; a rotating hole is formed in the cabinet door 2, two fixed ring frames 8 are fixedly installed on the inner side of the cabinet door 2, a rotating rod 6 is rotatably installed between the two fixed ring frames 8, and the shielding plate 4 is fixedly arranged on the rotating rod 6 and seals the rotating hole, a sealing rubber ring is arranged around the outer side of the shielding plate 4, the sealing rubber ring on the outer side of the shielding plate 4 can seal the rotating hole when the cabinet door 2 is closed, effectively preventing dust and water vapor from entering the cabinet body, protecting the internal equipment from environmental erosion, preventing dust from entering the power distribution cabinet 1 when the cabinet door 2 is closed, and a lock groove is formed in the upper end of the rotating rod 6, two blocking rods 7 are rotatably installed in the lock groove, the rotation angle limit of the two blocking rods 7 in the lock groove is 90°, that is, from a horizontal state (as shown in the figure) to a vertical state (the two blocking rods 7 are in an overlapping state), when the two blocking rods 7 are in a horizontal state, the shielding plate 4 will not rotate at this time, ensuring the sealing of the cabinet door 2 when the cabinet door 2 is locked, and preventing the internal structure of the power distribution room from being damaged at will. Figure 6
[0020] Also includes a connecting plate 17, which is fixedly arranged in the side of the shielding plate 4 located in the power distribution cabinet 1, the connecting plate 17 is provided with lifting unlocking part; The connecting plate 17 is provided with a plurality of straight rods 21, a plurality of straight rods 21 are connected by universal shaft 20, the upper end of the uppermost straight rod 21 is fixedly installed with the illuminating lamp 19, the illuminating lamp 19 adopts the mode of battery, compared with wire connection is more convenient, when the main power supply of the power distribution cabinet 1 fails or is under maintenance, the battery-powered illuminating lamp 19 can be immediately used, providing continuous emergency lighting, ensuring uninterrupted maintenance, cooperating with the setting of universal shaft 20, the illuminating lamp 19 can be rotated to any position (the length of the plurality of straight rods 21 is set according to the specific use length, so that it can adapt to the size of the power distribution cabinet 1, and the equipment in the power distribution cabinet 1 is illuminated without dead angle).
[0021] Referring to Figures 6-9 , the lifting unlocking part includes two threaded rods 9 screwed on the connecting plate 17, one side of the shielding plate 4 is fixedly installed with two mounting rings, the two threaded rods 9 are rotatably installed in the corresponding mounting rings, the two mounting rings positionally limit the threaded rods 9, the threaded rods 9 are both provided with operating parts, the operating parts include through holes formed in the threaded rods 9, the through holes are sleeved with damping bearings one 31, the damping bearings one 31 are sleeved with central shafts 32, the upper ends of the central shafts 32 are above the threaded rods 9, the upper ends of the central shafts 32 are fixedly installed with limit hammers 22, the lower ends of the central shafts 32 are formed with clamping grooves one 24, and the horizontal height of the lower end of the central shaft 32 is higher than that of the threaded rod 9, the threaded rod 9 is sequentially formed with rotating grooves 25 and clamping grooves two 30 from top to bottom, and the rotating grooves 25, the clamping grooves two 30 and the through holes are communicated, the rotating grooves 25 are slidably installed with rotating rings 27, the upper ends of the rotating rings 27 are fixedly installed with clamping blocks one 26 used in cooperation with the clamping grooves one 24, the lower ends of the rotating rings 27 are fixedly installed with clamping blocks two 28, the clamping blocks one 26 and the clamping blocks two 28 are prisms, the sum of the thickness of the clamping blocks two 28 and the thickness of the rotating ring 27, and the sum of the thickness of the clamping blocks one 26 and the thickness of the rotating ring 27 are both less than the height of the rotating groove 25, and the clamping blocks two 28 are used by clamping in the clamping grooves two 30, the lower ends of the clamping blocks two 28 are fixedly installed with sliding columns 29, and the sliding columns 29 are used by sliding in the through holes, the lower ends of the sliding columns 29 are fixedly installed with knobs 12. The outer sides of the two threaded rods 9 are both fixedly installed with sprockets 23, the two sprockets 23 are jointly meshed with chains, rotating one knob 12 can drive the two threaded rods 9 to rotate simultaneously through the cooperation of the two sprockets 23 and the chain.
[0022] Referring to Figures 3-5 and Figures 10-11Also includes the pedal 3, pedal 3 is installed on the connecting plate 17 through connecting components, connecting plate 17 with insulating material, while the upper surface of the pedal 3 is also provided with rubber pad, effectively prevent the failure of the power supply when the conductive, lifting unlocking components for limiting the state of the pedal 3 and adjust the height of the pedal 3, so that it adapts to the height of the staff required to use, by rotating the baffle 4, drive pedal 3 to the other side of the structure inside the switchgear 1 maintenance.
[0023] Connecting components include fixedly arranged on one side of the connecting plate 17 right angle plate 15, one side of the pedal 3 is provided with three hinges 16, the upper two hinges 16 are fixedly provided with support frame 5, three hinges 16 need a certain force to rotate, prevent the two support frame 5 on the pedal 3 from rotating to cause damage to the equipment inside the switchgear 1, in the area prone to earthquakes, increase the rotation resistance required by the hinge 16 on the two support frame 5 can realize the adaptability of the structure. The lowermost hinge 16 is fixedly installed with the stop plate 14, which can rotate to the horizontal angle with the pedal 3 and abut against the right angle plate 15, reducing the downward pressure on the hinge 16 at this position, improving the service life of the hinge 16 installed on the stop plate 14. The side of the pedal 3 close to the cabinet door 2 is fixedly installed with the boss 10 and the plurality of limiting plates 18, the plurality of limiting plates 18 are provided with displacement grooves, each displacement groove is slidably installed with a sliding block 34, each sliding block 34 is installed with a damping bearing two, the inner portion of each damping bearing two is rotatably sleeved with a rotating shaft 13, the boss 10 is slidably installed with two sliding plates 11, the two sliding plates 11 are provided with limiting grooves 33 for cooperating with the limiting hammer 22, and each two rotating shafts 13 are arranged on the same sliding plate 11. The two sliding plates 11 are subjected to opposite pulling force, so that the sliding block 34 slides in the displacement groove. When the sliding plate 11 is separated from the boss 10, the two sliding plates 11 are rotated to be perpendicular to the pedal 3 by rotating the sliding plate 11. The two sliding plates 11 are subjected to a certain force to rotate under the action of the damping bearing two. When the pedal 3 is in a horizontal state, the two sliding plates 11 shield the pedal 3 on both sides, which can effectively prevent the tools on the pedal 3 from falling off.
[0024] When the limiting hammer 22 is engaged in the limiting groove 33, the structure as a whole is fitted on the cabinet door 2, which does not affect the equipment inside the switchgear 1, and can be used conveniently. The two limiting hammers 22 are independently controlled, which can realize double insurance locking function. If one side limiting hammer 22 and limiting locking of limiting groove 33 fail, the other side can still keep locking to avoid safety accidents.
[0025] When the knob 12 is in the low position (initial state, personnel does not exert force), the knob 12 is rotated, and the threaded rod 9 is driven to rotate under the cooperation of the clamping block two 28 and the clamping groove two 30, the threaded rod 9 rotates through the connecting plate 17 and the right-angle plate 15 to drive the pedal 3 to rise, so that the pedal 3 rises to the repair height, and the personnel assists in maintenance. A plurality of round knobs are arranged on the outer side of the knob 12 at equal intervals, each round knob is 90°, one of the round knobs is red and reflective, and the position of the red reflective knob is in the same vertical plane as the limiting hammer 22. The position of the limiting hammer 22 can be obtained by observing the position of the red reflective knob, and the position of the limiting hammer 22 can be better observed while increasing the rotating friction.
[0026] Further, the fixed connection should be understood in a broad sense unless otherwise specified and limited, for example, it can be welding, or gluing, or integrally formed with the conventional means familiar to those skilled in the art.
[0027] The specific operation steps of the application are as follows: In the initial state, the limiting hammers 22 are clamped in the limiting grooves 33. When the high equipment in the power distribution cabinet 1 needs to be repaired: under the action of gravity, the knob 12 makes the structure above it as a whole Figure 9 When the high equipment in the power distribution cabinet 1 needs to be repaired or the repair tool needs to be placed, at this time, an upward pushing force is applied to the knob 12 with the hand, so that the clamping block one 26 is clamped in the clamping groove one 24, and the rotating ring 27 and the clamping block two 28 are located in the rotating groove 25. At this time, the knob 12 is rotated, and the limiting hammer 22 is driven to disengage from the limiting groove 33 through the cooperation of the clamping block one 26 and the center shaft 32. The other limiting hammer 22 is unlocked by repeating the above step, and the pedal 3 is unlocked as a whole. A rotating force is applied to the pedal 3 with the hand, so that the pedal 3 and the shielding plate 4 remain in a vertical state. Then the two supporting frames 5 are moved to be horizontal with the pedal 3, so that the bottom end of the supporting frame 5 is in contact with the ground. At this time, the personnel standing on the pedal 3 can repair or install the equipment in the power distribution cabinet 1. In the case of narrow space or sudden equipment damage, the equipment in the power distribution cabinet 1 can be quickly repaired.
[0028] When the tool is needed to maintain the equipment in the power distribution cabinet 1: At this time, the pedal 3 is rotated to the horizontal state (without rotating the support frame 5), at this time, the knob 12 is rotated to drive the pedal 3 to rise through the threaded rod 9, so that the pedal 3 rises to the height suitable for repair, and the repair tool is placed thereon, thereby reducing the number of times of bending over. After being raised to the required height, opposite pulling force is applied to the two sliding plates 11, so that the sliding block 34 slides in the displacement groove, when the sliding plate 11 is separated from the boss 10, at this time, the two sliding plates 11 are rotated to be perpendicular to the pedal 3, and the two sliding plates 11 need a certain force to rotate under the action of the damping bearing two, when the pedal 3 is in the horizontal state, at this time, the two sliding plates 11 shield the two sides of the pedal 3, which can effectively prevent the tool on the pedal 3 from falling.
[0029] When the equipment on the other side of the cabinet door 2 in the power distribution cabinet 1 needs to be maintained, at this time, the two blocking rods 7 are rotated to the vertical state, then the shielding plate 4 is rotated, so that the equipment on the shielding plate 4 is on the other side of the cabinet door 2, the above-mentioned operation is repeated to maintain the equipment on the other side, which can increase the maintenance area while ensuring the sealing of the cabinet door 2 and reducing the occupied area.
[0030] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A space optimization layout structure for a power distribution room, comprising a power distribution cabinet (1), characterized in that, The distribution cabinet (1) is equipped with a cabinet door (2) and also includes: A baffle (4) is installed on the cabinet door (2) and rotates along the vertical axis. A sealing rubber ring is provided on the outside of the baffle (4). A connecting plate (17) is fixedly installed on one side of the shield (4) inside the power distribution cabinet (1), and a lifting and unlocking component is provided on the connecting plate (17); The pedal (3) is installed on the connecting plate (17) by folding and storing it through the connecting component. The lifting and unlocking component is used to limit the state of the pedal (3) and adjust the height of the pedal (3) to adapt to the height required by the personnel. By rotating the cover plate (4), the pedal (3) is driven to repair the structure on the other side of the power distribution cabinet (1). Through the flipping and sealing of the cover plate (4), the folding and storage and height adjustment of the pedal (3) and the lifting and unlocking component of the connecting plate (17) are coordinated, the maintenance space is dynamically expanded and the operating platform is adapted.
2. The optimized layout structure for a power distribution room according to claim 1, characterized in that, The cabinet door (2) has a rotating hole. Two fixed ring frames (8) are fixedly installed on the inside of the cabinet door (2). A rotating rod (6) is rotatably installed between the two fixed ring frames (8). A baffle plate (4) is fixedly installed on the rotating rod (6) and seals the rotating hole.
3. The optimized layout structure for a power distribution room according to claim 2, characterized in that, The upper end of the rotating rod (6) is provided with a locking groove, and two stop rods (7) are rotatably installed in the locking groove. The two stop rods (7) rotate at an angle of 90° in the locking groove, rotating from a horizontal state to a vertical state.
4. The optimized layout structure for a power distribution room according to claim 1, characterized in that, The connecting plate (17) is provided with multiple straight rods (21), and the multiple straight rods (21) are connected by universal joints (20). The upper end of the uppermost straight rod (21) is fixedly installed with a lighting lamp (19).
5. The optimized layout structure for a power distribution room according to claim 1, characterized in that, The lifting and unlocking component includes two threaded rods (9) threadedly mounted on the connecting plate (17). Two mounting rings are fixedly installed on one side of the shielding plate (4). The two threaded rods (9) are rotatably mounted in the corresponding mounting rings. Each of the two threaded rods (9) is equipped with an operating component.
6. The optimized layout structure of a power distribution room according to claim 5, characterized in that, The operating component includes a through hole in the threaded rod (9), a damping bearing (31) is fitted inside the through hole, a central shaft (32) is fitted inside the damping bearing (31), the upper end of the central shaft (32) is located above the threaded rod (9), a limit hammer (22) is fixedly installed at the upper end of the central shaft (32), a slot (24) is opened at the lower end of the central shaft (32), and a rotating groove (25) and a slot (30) are opened in the threaded rod (9) in sequence, and the rotating groove (25) and the slot (30) are... (30) and the through hole are connected. A rotating ring (27) is slidably installed in the rotating groove (25). A first locking block (26) for use with the first locking groove (24) is fixedly installed at the upper end of the rotating ring (27). A second locking block (28) is fixedly installed at the lower end of the rotating ring (27), and the second locking block (28) is engaged in the second locking groove (30). A sliding column (29) is fixedly installed at the lower end of the second locking block (28), and the sliding column (29) slides in the through hole. A knob (12) is fixedly installed at the lower end of the sliding column (29).
7. The optimized layout structure for a power distribution room according to claim 6, characterized in that, Both of the threaded rods (9) are fixedly mounted with sprockets (23) on their outer sides, and a chain is provided between the two sprockets (23).
8. The optimized layout structure of a power distribution room according to claim 1, characterized in that, The connecting component includes a right-angle plate (15) fixedly installed on one side of the connecting plate (17), and three hinges (16) are provided on the pedal (3). The two upper hinges (16) are fixedly provided with support frames (5), and the lower hinge (16) is fixedly installed with a stop plate (14).
9. The optimized layout structure of a power distribution room according to claim 6, characterized in that, The pedal (3) is fixedly installed with a boss (10) and multiple limiting plates (18) on the side near the cabinet door (2). Each of the multiple limiting plates (18) has a displacement groove, and each displacement groove has a slider (34) slidably installed. Each slider (34) has a damping bearing II installed inside, and each damping bearing II has a rotating shaft (13) rotatably fitted inside.
10. The optimized layout structure of a power distribution room according to claim 9, characterized in that, Two sliding plates (11) are slidably mounted on the boss (10). Each of the two sliding plates (11) is provided with a limiting groove (33) for use with the limiting hammer (22). Each pair of rotating shafts (13) is set on the same sliding plate (11).
Citation Information
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