Financial information management and storage device based on Internet operation

Abstract

The invention relates to the technical field of information management and storage, in particular to a financial information management and storage device based on internet operation, which comprises a cabinet body, a storage layer and a dehumidification layer are arranged in the cabinet body from top to bottom, and a sealing door is movably arranged on the outer side of the storage layer. A driving mechanism used for moving the sealing door is arranged in the cabinet body, a movable door is movably installed on the outer side of the dehumidification layer, a dehumidification assembly is arranged at the bottom end of the interior of the cabinet body, and a first supporting plate, a second supporting plate and a third supporting plate are sequentially and movably installed in the storage layer from top to bottom; the first supporting plate, the second supporting plate and the third supporting plate are provided with lifting mechanisms, and under the action of the lifting mechanisms, the distances among the first supporting plate, the second supporting plate and the third supporting plate can be freely changed, so that files or bills of different sizes can be placed on the first supporting plate, the second supporting plate and the third supporting plate respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of information management and storage, and in particular to a financial information management and storage device based on Internet operation. Background Art

[0002] Financial information management storage devices are tools used to store, organize and manage financial information, documents and data, and are usually used in companies, enterprises, financial departments and other places. This storage box helps ensure the security, convenience and orderly management of financial documents, and meets the requirements of financial data confidentiality, compliance and easy access.

[0003] In the prior art, the traditional storage device, that is, the storage box adopts a fixed partition design, which cannot adjust the space according to the size of the document, resulting in the problem that small-sized bills are easily scattered or large documents cannot be stored. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides the following technical solutions: a financial information management and storage device based on Internet operation, comprising a cabinet, wherein a storage layer and a dehumidification layer are respectively arranged inside the cabinet from top to bottom, and a sealing door is movably arranged on the outer side of the storage layer, a driving mechanism for moving the sealing door is arranged inside the cabinet, a movable door is movably installed on the outer side of the dehumidification layer, a dehumidification assembly is arranged at the inner bottom of the cabinet, a pallet one, a pallet two, and a pallet three are movably installed in sequence inside the storage layer from top to bottom, and the pallet one, the pallet two, and the pallet three are provided with a lifting mechanism, a plurality of partitions are fixedly installed on the upper surfaces of the pallet one, the pallet two, and the pallet three, and the plurality of partitions are paired, and a clamping mechanism is arranged on the upper surfaces of the pallet one, the pallet two, and the pallet three, and the clamping mechanism is located between two partitions, supporting legs are fixedly installed on both sides of the bottom of the cabinet, and a controller is fixedly installed on the side surface of the cabinet.

[0005] As an improvement of the above technical solution, the driving mechanism includes a slider arranged on the rear surface of the sealed door, and the slider is integrally formed with the sealed door, and sealed slide grooves are opened inside both sides of the cabinet, the slider is movably inserted inside the sealed slide groove, and each of the sliders is opened inside a mounting groove, an electric telescopic rod is arranged inside the mounting groove, and the bottom of the electric telescopic rod is fixedly installed on the bottom end of the inner part of the sealed slide groove, and the telescopic end of the electric telescopic rod is fixedly connected to the top of the mounting groove.

[0006] As an improvement of the above technical solution, a glass window is arranged inside the middle position of the sealed door.

[0007] As an improvement of the above technical solution, the dehumidification component includes a water collecting tank fixedly installed at the bottom of the cabinet, a mounting frame fixedly installed at the upper end of the water collecting tank, a semiconductor dehumidification sheet embedded inside the lower surface of the mounting frame, and a water level sensor fixedly installed inside the water collecting tank.

[0008] As an improvement of the above technical solution, the semiconductor dehumidification sheet is horizontally installed directly above the water collecting tank, and the condensation surface of the semiconductor dehumidification sheet faces downward. The water level sensor arranged inside the water collecting tank is electrically connected to the controller, and the water collecting tank is located directly below the tray three.

[0009] As an improvement of the above technical solution, the dehumidification component also includes a plurality of fan housings fixedly installed inside the dehumidification layer, a fan is installed inside each of the fan housings, an air inlet is provided at the bottom of the cabinet, and the dehumidification layer is connected with the storage layer through the air inlet, a plurality of air holes are provided inside the pallet one, the pallet two, and the pallet three, and a plurality of strip air outlets are provided on the top of the cabinet, a layer of waterproof and breathable membrane is installed inside each of the strip air outlets, a hot air duct is fixedly installed on the outer surface of the bottom end of the cabinet, and the hot air duct is connected with the interior of the dehumidification layer.

[0010] As an improvement of the above technical solution, the lifting mechanism includes a fixed rod fixedly installed in the middle position inside the storage layer, and the fixed rod passes through pallet one, pallet two, and pallet three respectively, and the fixed rod is movably connected to pallet one, pallet two, and pallet three, and the bottom of pallet one, pallet two, and pallet three are all provided with spring one, and the spring is sleeved on the fixed rod, and the outer surface of the fixed rod is fixedly sleeved with a plurality of fixed platforms, one end of a plurality of spring one is fixedly connected to the respective fixed platforms, and the other end of a plurality of spring one is fixedly connected to the lower surface of pallet one, pallet two, and pallet three respectively, and a plurality of limit nuts are also screwed and installed on the outer surface of the fixed rod, and the outer surface of the fixed rod is provided with threads compatible with the plurality of limit nuts, and the plurality of limit nuts are respectively located on the upper surfaces of pallet one, pallet two, and pallet three.

[0011] As an improvement of the above technical solution, a plurality of guide rods are fixedly installed on both sides of the interior of the storage layer, and the guide rods respectively pass through pallet one, pallet two, and pallet three, and the guide rods and pallet one, pallet two, and pallet three are all movably connected.

[0012] As an improvement of the above technical solution, the clamping mechanism includes a telescopic sleeve rod embedded in one of the partition boards. The telescopic sleeve rod includes a telescopic outer sleeve plate and a telescopic inner sleeve plate. The telescopic outer sleeve plate is embedded in the interior of the partition board, and the telescopic inner sleeve plate is movably inserted into the interior of the telescopic outer sleeve plate. A plurality of second springs are fixedly installed inside the telescopic outer sleeve plate. One end of the telescopic inner sleeve plate located inside the telescopic outer sleeve plate is fixedly installed with a movable clamping block, and the movable clamping block is slidably installed inside the telescopic outer sleeve plate. One ends of the plurality of second springs are fixedly connected to the movable clamping block. The end of the telescopic inner sleeve plate away from the telescopic outer sleeve plate is fixedly installed with a limiting member, and the limiting member is in a "C" shape.

[0013] Advantages of the present invention: 1. By respectively arranging a storage layer and a dehumidification layer from top to bottom inside the cabinet body, and movably arranging a first tray, a second tray, and a third tray inside the storage layer, and arranging a lifting mechanism between the first tray, the second tray, and the third tray. Under the action of the lifting mechanism, the distance between the first tray, the second tray, and the third tray can be freely changed, so that documents or bills of different sizes can be placed on the first tray, the second tray, and the third tray respectively. At the same time, a clamping mechanism is arranged between the partition boards installed between the first tray, the second tray, and the third tray. Under the action of the clamping mechanism, the placed documents or bills can be in a stable state, avoiding the phenomenon of scattering, thereby increasing the stability and adaptability of the overall device when placing documents or bills.

[0014] 2. By arranging a dehumidification component at the bottom of the cabinet body, under the action of the dehumidification component, the interior of the cabinet body can be kept dry, avoiding the phenomenon that the documents or bills placed inside the cabinet body get damp. Description of the drawings

[0015] Figure 1 is a three-dimensional structure diagram of the present invention; Figure 2 is a structure diagram of the sealing door in the present invention; Figure 3 is an internal structure diagram of the cabinet body in the present invention; Figure 4 is a structure diagram of the first tray, the second tray, and the third tray in the present invention; Figure 5 is a structure diagram of the water accumulation tank in the present invention; Figure 6 of the present invention Figure 3 is an enlarged structure diagram at A in; Figure 7 of the present invention Figure 4 is an enlarged structure diagram at B in; Figure 8 is a structure diagram of the telescopic sleeve plate of the present invention.

[0016] Figure numerals: 1, cabinet; 11, storage layer; 12, dehumidification layer; 13, movable door; 14, sealed slide; 141, electric telescopic rod; 2, controller; 3, support leg; 4, sealed door; 41, glass window; 42, slider; 43, mounting groove; 5, pallet one; 51, guide rod; 52, fixing rod; 53, spring one; 54, partition; 55, telescopic sleeve rod; 551, telescopic outer outer plate; 552, telescopic inner plate; 553, movable block; 554, spring two; 56, limit piece; 57, limit nut; 58, fixing platform; 59, air vent; 6, pallet two; 7, pallet three; 8, water collecting tank; 81, water level sensor; 82, mounting bracket; 83, semiconductor dehumidification sheet; 9, fan; 91, hot air duct; 92, strip air outlet; 93, air inlet; 94, fan cover. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] See also Figure 1-8 The present invention provides a technical solution: a financial information management and storage device based on Internet operation, comprising a cabinet 1, wherein a storage layer 11 and a dehumidification layer 12 are respectively arranged from top to bottom inside the cabinet 1, and a sealing door 4 is movably arranged outside the storage layer 11, a driving mechanism for moving the sealing door 4 is arranged inside the cabinet 1, and a movable door 13 is movably installed outside the dehumidification layer 12, a dehumidification component is arranged at the bottom end of the cabinet 1, and a storage layer 11 is movably arranged inside the storage layer 11 from top to bottom. A pallet 1 5, a pallet 2 6 and a pallet 3 7 are installed, and pallet 1 5, pallet 2 6 and pallet 3 7 are provided with a lifting mechanism, a plurality of partitions 54 are fixedly installed on the upper surfaces of pallet 1 5, pallet 2 6 and pallet 3 7, and the plurality of partitions 54 are paired, and a clamping mechanism is provided on the upper surfaces of pallet 1 5, pallet 2 6 and pallet 3 7, and the clamping mechanism is located between two partitions 54, supporting legs 3 are fixedly installed on both sides of the bottom of the cabinet 1, and a controller 2 is fixedly installed on the side surface of the cabinet 1.

[0019] In the present embodiment, a storage layer 11 and a dehumidification layer 12 are respectively arranged from top to bottom inside the cabinet 1, and pallet 1 5, pallet 2 6, and pallet 3 7 are movably arranged inside the storage layer 11, and a lifting mechanism is arranged between pallet 1 5, pallet 2 6, and pallet 3 7. Under the action of the lifting mechanism, the spacing between pallet 1 5, pallet 2 6, and pallet 3 7 can be freely changed, so that documents or bills of different sizes can be placed on pallet 1 5, pallet 2 6, and pallet 3 7 respectively, and at the same time, a clamping mechanism is arranged between the partitions 54 installed between pallet 1 5, pallet 2 6, and pallet 3 7. Under the action of the clamping mechanism, the placed documents or bills can be kept in a stable state to avoid being scattered, thereby increasing the stability and adaptability of the overall device when placing documents or bills; a dehumidification component is arranged at the bottom of the cabinet 1. Under the action of the dehumidification component, the interior of the cabinet 1 can be kept in a dry state to avoid the documents or bills placed inside the cabinet 1 from getting damp.

[0020] Specifically, the driving mechanism includes a slider 42 arranged on the rear surface of the sealed door 4, and the slider 42 is integrally formed with the sealed door 4. Sealed slide grooves 14 are opened inside the cabinet 1 on both sides, and the slider 42 is movably inserted into the sealed slide groove 14, and each slider 42 is opened inside a mounting groove 43, and an electric telescopic rod 141 is arranged inside the mounting groove 43, and the bottom of the electric telescopic rod 141 is fixedly installed on the bottom end of the sealed slide groove 14, the telescopic end of the electric telescopic rod 141 is fixedly connected to the top of the mounting groove 43, and a glass window 41 is arranged inside the middle position of the sealed door 4.

[0021] In this embodiment, a driving mechanism for the sealed door 4 is provided inside the cabinet 1. Under the action of the driving mechanism, when the sealed door 4 needs to be opened, the electric telescopic rod 141 located inside the sealed slide groove 14 is first started through the controller 2. At this time, the telescopic end of the electric telescopic rod 141 starts to move upward, thereby driving the sealed door 4 to move upward as a whole, so that the sealed door 4 can be opened to access or store documents.

[0022] Specifically, the dehumidification component includes a water collecting tank 8 fixedly installed at the bottom of the cabinet 1, a mounting frame 82 is fixedly installed on the upper end of the water collecting tank 8, a semiconductor dehumidification sheet 83 is embedded in the lower surface of the mounting frame 82, a water level sensor 81 is fixedly installed inside the water collecting tank 8, the semiconductor dehumidification sheet 83 is horizontally installed just above the water collecting tank 8, and the condensation surface of the semiconductor dehumidification sheet 83 faces downward, the water level sensor 81 arranged inside the water collecting tank 8 is electrically connected to the controller 2, and the water collecting tank 8 is located just below the support plate 7, and the dehumidification component also includes a fixedly installed dehumidification layer 12 There are several fan covers 94 inside, and a fan 9 is installed inside each fan cover 94. An air inlet 93 is opened at the bottom of the cabinet 1, and the dehumidification layer 12 is connected with the storage layer 11 through the air inlet 93. Several air holes 59 are opened inside the pallet 1 5, the pallet 2 6, and the pallet 3 7, and several strip air outlets 92 are opened on the top of the cabinet 1, and a layer of waterproof and breathable membrane is installed inside each strip air outlet 92. A hot air duct 91 is fixedly installed on the outer surface of the bottom end of the cabinet 1, and the hot air duct 91 is connected with the inside of the dehumidification layer 12.

[0023] In this embodiment, a dehumidification component is arranged at the bottom of the cabinet 1. Under the action of the dehumidification component, when the environment in which the cabinet 1 is located is relatively humid, the fan 9 arranged inside the dehumidification layer 12 is first started by the controller 2, and at the same time, the hot air maker outside is connected through the hot air duct 91 to pass hot air into the dehumidification layer 12. Under the action of the fan 9, the introduced hot air enters the storage layer 11 through the air inlet 93. At the same time, the interiors of the pallet 1 5, the pallet 2 6, and the pallet 3 7 are all provided with air holes 59, and the hot air can be blown to the storage layer 11 in turn. The documents placed on pallet 1 5, pallet 2 6 and pallet 3 7 are dehumidified. At the same time, a water collecting tank 8 and a semiconductor dehumidification sheet 83 are arranged at the bottom of the cabinet 1. The condensation surface of the semiconductor dehumidification sheet 83 can condense the moisture in the internal space of the cabinet 1, and the condensed water drips into the water collecting tank 8 under the action of gravity. When the water level in the water collecting tank 8 reaches a certain level, the water level sensor 81 arranged in the water collecting tank 8 will send an alarm to the controller 2 to remind the staff to remove water, thereby increasing the moisture resistance of the overall device.

[0024] Specifically, the lifting mechanism includes a fixed rod 52 fixedly installed at the middle position inside the storage layer 11. The fixed rod 52 penetrates through the first support plate 5, the second support plate 6, and the third support plate 7 respectively, and the fixed rod 52 is movably connected to the first support plate 5, the second support plate 6, and the third support plate 7. Spring one 53 is provided at the bottom of each of the first support plate 5, the second support plate 6, and the third support plate 7, and the spring one 53 is sleeved on the fixed rod 52. A number of fixed platforms 58 are fixedly sleeved on the outer surface of the fixed rod 52. One end of each of the number of spring one 53 is fixedly connected to the corresponding fixed platform 58, and the other end of each of the number of spring one 53 is fixedly connected to the lower surface of the first support plate 5, the second support plate 6, and the third support plate 7 respectively. A number of limiting nuts 57 are also screwed onto the outer surface of the fixed rod 52. The outer surface of the fixed rod 52 is provided with threads adapted to the number of limiting nuts 57. The number of limiting nuts 57 are respectively located on the upper surfaces of the first support plate 5, the second support plate 6, and the third support plate 7. A number of guide rods 51 are fixedly installed on both sides inside the storage layer 11, and the guide rods 51 penetrate through the first support plate 5, the second support plate 6, and the third support plate 7 respectively, and the guide rods 51 are movably connected to the first support plate 5, the second support plate 6, and the third support plate 7. The clamping mechanism includes a telescopic sleeve rod 55 embedded in one of the partition plates 54. The telescopic sleeve rod 55 includes a telescopic outer sleeve plate 551 and a telescopic inner sleeve plate 552. The telescopic outer sleeve plate 551 is embedded in the partition plate 54, and the telescopic inner sleeve plate 552 is movably inserted into the telescopic outer sleeve plate 551. A number of spring two 554 are fixedly installed inside the telescopic outer sleeve plate 551. An active clamping block 553 is fixedly installed at one end of the telescopic inner sleeve plate 552 located inside the telescopic outer sleeve plate 551, and the active clamping block 553 is slidably installed inside the telescopic outer sleeve plate 551. One end of each of the number of spring two 554 is fixedly connected to the active clamping block 553. A limiting member 56 is fixedly installed at the end of the telescopic inner sleeve plate 552 away from the telescopic outer sleeve plate 551, and the limiting member 56 is in a "C" shape.

[0025] In this embodiment, a lifting mechanism is provided between the pallet 1 5, the pallet 2 6, and the pallet 3 7. Under the action of the lifting mechanism, when it is necessary to place documents or bills of different sizes inside the cabinet 1, it is first necessary to adjust the spacing between the pallet 1 5, the pallet 2 6, and the pallet 3 7. During the adjustment, the limiting nut 57 screwed on the outer surface of the rotating fixing rod 52 is screwed to make the pallet 1 5, the pallet 2 6, and the pallet 3 7 rise or fall. At this time, the spring 1 53 is in a compressed state, so as to support the position of the pallet 1 5, the pallet 2 6, and the pallet 3 7. When the adjustment is completed, the pallet 1 5, the pallet 2 6, and the pallet 3 7 can be raised or lowered. By placing documents or bills of different sizes on pallet 1 5, pallet 2 6, and pallet 3 7, after placement, the telescopic outer plate 551, the telescopic inner plate 552, the movable block 553, the spring 2 554, and the limiting member 56 in the clamping mechanism cooperate with each other to clamp and fix the placed documents or bills to prevent the placed documents or bills from scattering. During clamping, the telescopic inner plate 552 and the limiting member 56 are always in an ejected state under the action of the spring 2 554, and can always apply pressure to the placed documents or bills to achieve the limiting effect.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A financial information management and storage device based on Internet operation, comprising a cabinet (1), characterized in that: The cabinet (1) is provided with a storage layer (11) and a dehumidification layer (12) from top to bottom, and a sealing door (4) is movably provided on the outer side of the storage layer (11). A driving mechanism for moving the sealing door (4) is provided on the inner side of the cabinet (1). A movable door (13) is movably installed on the outer side of the dehumidification layer (12). A dehumidification assembly is provided on the inner bottom of the cabinet (1). A first support plate (5), a second support plate (6), and a third support plate (7) are movably installed on the inner side of the storage layer (11) from top to bottom, and the first support plate (5) is a support plate for the first support plate (6). The first tray (5), the second tray (6), and the third tray (7) are provided with a lifting mechanism, and a plurality of partitions (54) are fixedly installed on the upper surfaces of the first tray (5), the second tray (6), and the third tray (7), and the plurality of partitions (54) are arranged in pairs, and a clamping mechanism is provided on the upper surfaces of the first tray (5), the second tray (6), and the third tray (7), and the clamping mechanism is located between the two partitions (54), and the bottom sides of the cabinet body (1) are fixedly installed with supporting legs (3), and the side surface of the cabinet body (1) is fixedly installed with a controller (2).

2. The financial information management and storage device based on Internet operation according to claim 1, characterized in that: The driving mechanism comprises a slider (42) arranged on the rear surface of the sealed door (4), and the slider (42) and the sealed door (4) are integrally formed, and sealed slide grooves (14) are provided inside the cabinet (1) on both sides, and the slider (42) is movably inserted into the inside of the sealed slide groove (14), and each slider (42) is provided with a mounting groove (43), and an electric telescopic rod (141) is provided inside the mounting groove (43), and the bottom of the electric telescopic rod (141) is fixedly installed at the bottom end of the inside of the sealed slide groove (14), and the telescopic end of the electric telescopic rod (141) is fixedly connected to the top end of the mounting groove (43).

3. The financial information management and storage device based on Internet operation according to claim 2, characterized in that: A glass window (41) is provided inside the middle of the sealed door (4).

4. The financial information management and storage device based on Internet operation according to claim 1, characterized in that: The dehumidification assembly comprises a water collecting tank (8) fixedly mounted on the bottom of the cabinet (1); a mounting frame (82) is fixedly mounted on the upper end of the water collecting tank (8); a semiconductor dehumidification sheet (83) is embedded in the lower surface of the mounting frame (82); and a water level sensor (81) is fixedly mounted inside the water collecting tank (8).

5. The financial information management and storage device based on Internet operation according to claim 4, characterized in that: The semiconductor dehumidification sheet (83) is horizontally installed directly above the water collecting tank (8), with the condensation surface of the semiconductor dehumidification sheet (83) facing downwards; a water level sensor (81) provided inside the water collecting tank (8) is electrically connected to the controller (2); and the water collecting tank (8) is located directly below the third support plate (7).

6. The financial information management and storage device based on Internet operation according to claim 5, characterized in that: The dehumidification assembly further comprises a plurality of fan covers (94) fixedly mounted inside the dehumidification layer (12), each of the fan covers (94) having a fan (9) mounted therein; an air inlet (93) is provided at the bottom of the cabinet (1), and the dehumidification layer (12) is connected to the storage layer (11) through the air inlet (93); a plurality of air holes (59) are provided inside the support plate 1 (5), the support plate 2 (6), and the support plate 3 (7); a plurality of strip air outlets (92) are provided at the top of the cabinet (1), and a waterproof and breathable membrane is mounted therein; a hot air duct (91) is fixedly mounted on the outer surface of the bottom end of the cabinet (1), and the hot air duct (91) is connected to the inside of the dehumidification layer (12).

7. The financial information management and storage device based on Internet operation according to claim 1, characterized in that: The lifting mechanism comprises a fixing rod (52) fixedly mounted at a middle position inside the storage layer (11), and the fixing rod (52) respectively penetrates the first support plate (5), the second support plate (6), and the third support plate (7), and the fixing rod (52) is movably connected to the first support plate (5), the second support plate (6), and the third support plate (7), and the bottom of each of the first support plate (5), the second support plate (6), and the third support plate (7) is provided with a spring (53), and the spring (53) is sleeved on the fixing rod (52), and the outer surface of the fixing rod (52) is fixedly sleeved with a plurality of fixing members. A fixed platform (58), one end of the plurality of springs (53) is fixedly connected to the fixed platform (58), and the other end of the plurality of springs (53) is fixedly connected to the lower surface of the support plate (5), the support plate (6), and the support plate (7), respectively. The outer surface of the fixing rod (52) is also screwed with a plurality of limit nuts (57), and the outer surface of the fixing rod (52) is provided with threads matching the plurality of limit nuts (57). The plurality of limit nuts (57) are respectively located on the upper surface of the support plate (5), the support plate (6), and the support plate (7).

8. The financial information management and storage device based on Internet operation according to claim 7, characterized in that: A plurality of guide rods (51) are fixedly mounted on both sides of the interior of the storage layer (11), and the guide rods (51) respectively penetrate the first support plate (5), the second support plate (6), and the third support plate (7), and the guide rods (51) and the first support plate (5), the second support plate (6), and the third support plate (7) are all movably connected.

9. The financial information management and storage device based on Internet operation according to claim 8, characterized in that: The clamping mechanism includes a telescopic sleeve rod (55) fitted inside one of the partition plates (54). The telescopic sleeve rod (55) includes a telescopic outer sleeve plate (551) and a telescopic inner sleeve plate (552). The telescopic outer sleeve plate (551) is fitted inside the partition plate (54), and the telescopic inner sleeve plate (552) is movably inserted inside the telescopic outer sleeve plate (551). A number of second springs (554) are fixedly installed inside the telescopic outer sleeve plate (551). One end of the telescopic inner sleeve plate (552) located inside the telescopic outer sleeve plate (551) is fixedly installed with a movable clamping block (553), and the movable clamping block (553) is slidably installed inside the telescopic outer sleeve plate (551). One ends of the number of second springs (554) are fixedly connected to the movable clamping block (553). One end of the telescopic inner sleeve plate (552) away from the telescopic outer sleeve plate (551) is fixedly installed with a limiting member (56), and the limiting member (56) is in a "C" shape.

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