Modular stereoscopic warehousing system suitable for multi-specification bins

Abstract

The application relates to the technical field of modular stereoscopic storage systems, in particular to a modular stereoscopic storage system suitable for multiple specifications of material boxes, which comprises a base, a storage rack, a partition plate, a guide structure, a walking structure, a butt joint structure, a suspension structure and a limiting structure. Through cooperation of the top guide structure and the walking structure and cooperation of the suspension structure and the butt joint structure, automatic hoisting and translation of the whole storage rack can be realized, manual forklift intervention is not needed, quick adjustment and modular reconstruction of the storage layout are facilitated, the partition plate is quickly clamped with the limiting hole on the storage rack through the limiting structure, bolt tools are not needed, and operation is simple and convenient; a user can flexibly adjust the position of the partition plate according to the size of the material box, and the storage demand of different specifications of material boxes can be adapted; the base, the storage rack, the partition plate, the guide structure, the walking structure, the suspension structure and the butt joint structure all adopt standardized components, production and manufacturing and on-site assembly are facilitated, and maintenance cost is low.

Description

Technical Field

[0001] This invention relates to the field of modular automated storage and retrieval systems, specifically a modular automated storage and retrieval system adaptable to various sizes of bins. Background Technology

[0002] Automated storage and retrieval systems (AS / RS) enable high-level warehouse optimization, automated storage and retrieval, and simplified operation. The main components of an AS / RS consist of racking, aisle stacker cranes, inbound and outbound workstations, and an automated transport and control system. The racking is a steel or reinforced concrete structure containing standard-sized storage locations. The aisle stacker cranes move through the aisles between the racks to perform storage and retrieval operations. Management utilizes computer and barcode technology.

[0003] In the fields of modern logistics and intelligent manufacturing, modular automated storage and retrieval systems are widely used due to their high space utilization and efficient storage and retrieval. However, most existing automated storage racks are integrally welded or bolted structures. The internal partitions of the storage racks are fixed in position and connected by bolts, making it difficult to flexibly adjust the storage space according to the specifications of the storage boxes. This results in the storage system being unable to adapt to storage boxes of different sizes, leading to poor flexibility. At the same time, storage racks are usually fixedly installed on the ground or at the storage location. When it is necessary to adjust the layout or move the entire rack unit, forklifts or large lifting equipment must be used, which is cumbersome and inefficient. It is impossible to achieve rapid disassembly and modular reconfiguration of the storage rack itself. Existing automated storage and retrieval systems lack a unified modular handling interface and supporting automated walking and hoisting mechanisms. The movement of storage racks still relies on manual or external equipment intervention, making it difficult to link with intelligent storage management systems. Summary of the Invention

[0004] To address the problems in the existing technology, the present invention provides a modular three-dimensional storage system that is adaptable to multiple sizes of bins.

[0005] The technical solution adopted by this invention to solve its technical problem is: a modular three-dimensional storage system adapted to multi-specification bins, including multiple bases, with each pair of bases arranged symmetrically. Multiple storage racks are snap-fitted onto each base. Each storage rack is provided with corresponding partition grooves and limiting holes. Partitions can be installed in the partition grooves, and each partition is provided with a limiting structure that engages with the limiting holes. The limiting structure enables rapid installation of the partitions. The top of the storage rack is equipped with a docking structure, and the top of the storage room is provided with three guide structures. Each guide structure includes a hanger, and a traveling structure is slidably installed on the hanger. Two of the hangers are installed parallel to each other on the top of the storage room, and the other hanger is installed on the traveling structure on the two parallel hangers. A suspension structure is installed on the traveling structure on the hanger. The suspension structure works in conjunction with the docking structure. By moving the traveling structure on the guide structure, the suspension structure lifts the docking structure, and the docking structure raises the storage rack, thus realizing the modular handling of the storage rack.

[0006] Specifically, the limiting structure includes limiting rods, and two limiting rods are slidably provided on the partition plate, with the limiting rods engaging with the limiting holes.

[0007] Specifically, a driving block is slidably provided in the partition, and two symmetrically arranged inclined grooves are provided on the driving block. A roller is rotatably provided in the inclined groove, and the roller is rotatably connected to the limiting rod.

[0008] Specifically, a tension spring is installed between the drive block and the partition, and a T-shaped tension plate is fixed on the drive block.

[0009] Specifically, the walking structure includes a walking frame, gears, and a first driving component. Two of the hanging frames installed at the top of the storage room form a Y-axis moving guide rail, and another hanging frame forms an X-axis guide rail. Each hanging frame is equipped with a rack, and the top of each hanging frame is equipped with a walking frame. A gear is rotatably mounted on the walking frame, and the gear meshes with the rack. The first driving component is installed on the walking frame, and the drive shaft of the first driving component is fixedly connected to the gear. The two ends of the hanging frame forming the X-axis guide rail are fixed to the two walking frames that move along the Y-axis.

[0010] Specifically, the traveling frame is provided with two guide wheels that rotate with the hanging frame. The guide wheels have grooves in them, and the rack is located in the grooves.

[0011] Specifically, the suspension structure includes a fixed frame, a telescopic component, and a docking component. A docking frame is installed at the bottom of the traveling frame that moves along the X-axis. A fixed frame is installed at the bottom of the docking frame. A telescopic component is installed at the bottom of the fixed frame. A docking component is installed on the telescopic component. The docking component is connected to the docking structure.

[0012] Specifically, the telescopic component includes a first telescopic component, a first guide rod, and a docking frame. The first telescopic component is installed at the bottom of the fixed frame, the docking frame is fixed on the piston rod of the first telescopic component, and the first guide rod is installed at the top of the docking frame. The first guide rod is slidably connected to the fixed frame.

[0013] Specifically, the docking structure includes a cover plate, a docking block, and a positioning block. Four positioning blocks are engaged at the top of the storage rack. The positioning blocks are connected to the storage rack by bolts. A cover plate is installed at the top of the positioning block. A docking block is installed on the cover plate. The docking frame engages with the docking block.

[0014] Specifically, the docking component includes a locking block, a second telescopic component, and a second guide rod. The locking block is slidably provided on the docking frame and engages with the docking block. The second guide rod is fixed on the locking block and is slidably connected to the docking frame. The sliding direction of the second guide rod is perpendicular to the sliding direction of the first guide rod. The second telescopic component is installed on the docking frame, and the piston rod of the second telescopic component is fixed to the locking block.

[0015] The beneficial effects of this invention are: (1) The modular three-dimensional storage system adapted to multiple specifications of bins described in this invention can realize the automatic lifting and translation of the entire storage rack by means of the top guide structure and the walking structure, and the suspension structure and docking structure, without the need for manual forklift intervention, which facilitates the rapid adjustment and modular reconstruction of the storage layout.

[0016] (2) The modular three-dimensional storage system adapted to multiple specifications of bins described in this invention has a partition that can be quickly engaged with the limiting holes on the storage rack through a limiting structure, without the need for bolts or tools, and is easy to operate; users can flexibly adjust the position of the partition according to the size of the bin to meet the storage needs of bins of different specifications.

[0017] (3) The modular three-dimensional storage system adapted to multiple specifications of bins described in this invention adopts gear and rack meshing drive and is equipped with grooved guide wheels to ensure accurate guidance and easy derailment when the walking structure moves on the hanger, thereby improving the stability of system operation; reliable docking and safe hoisting: the suspension structure adopts telescopic parts and card block docking parts. After the docking frame and docking block are locked, the second telescopic part locks it to ensure that the storage rack will not loosen during hoisting, which is safe and reliable. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 The enlarged view of part A shown; Figure 3 for Figure 1 The enlarged view of section B shown; Figure 4 for Figure 1 The diagram shows the connection structure between the guide structure and the walking structure. Figure 5This is a schematic diagram of the gear and rack structure of the present invention; Figure 6 This is a schematic diagram of the structure of the storage rack and partition of the present invention; Figure 7 for Figure 1 The diagram shows the structure of the docking structure and the suspension structure. Figure 8 This is a schematic diagram of the structure of the partition groove and the partition plate of the present invention; Figure 9 for Figure 8 A bottom view; Figure 10 for Figure 9 Enlarged view of section C shown; Figure 11 This is a schematic diagram of the limiting structure of the present invention.

[0020] In the diagram: 1. Base; 2. Storage rack; 201. Divider groove; 202. Limiting hole; 3. Partition; 4. Guide structure; 401. Hanger; 402. Rack; 5. Walking structure; 501. Walking frame; 502. Gear; 503. First driving component; 504. Guide wheel; 505. Groove; 506. Docking frame; 6. Docking structure; 601. Cover plate; 602. Docking block; 603. Positioning block; 7. Suspension structure; 701. Fixing frame; 702. First telescopic component; 703. First guide rod; 704. Docking frame; 705. Locking block; 706. Second telescopic component; 707. Second guide rod; 8. Limiting structure; 801. Pull plate; 802. Driving block; 803. Inclined groove; 804. Roller; 805. Limiting rod; 806. Tension spring. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 , Figure 6 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the modular three-dimensional storage system of the present invention, which is adapted to multiple specifications of bins, includes multiple bases 1, which are arranged symmetrically in pairs. Multiple storage racks 2 are snapped onto each base 1. The storage racks 2 are provided with corresponding partition grooves 201 and limiting holes 202. Partitions 3 can be installed in the partition grooves 201. The partitions 3 are provided with limiting structures 8, which engage with the limiting holes 202. The limiting structures 8 enable the rapid installation of the partitions 3. The limiting structure 8 includes limiting rods 805. Two limiting rods 805 are slidably disposed on the partition 3, and the limiting rods 805 engage with the limiting holes 202. A driving block 802 is slidably disposed in the partition 3. The driving block 802 has two symmetrically arranged inclined grooves 803. A roller 804 is rolled in the inclined grooves 803, and the roller 804 is rotatably connected to the limiting rods 805. A tension spring 806 is installed between the driving block 802 and the partition 3. A T-shaped pull plate 801 is fixed on the driving block 802. By inserting the partition 3 into the corresponding groove, and then pulling the T-shaped pull plate 801, the driving block 802 is driven to move on the partition. 3. Internal sliding: The inclined groove 803 on the drive block 802 pushes the roller 804, causing the two limiting rods 805 to slide into the partition 3. The drive block 802 pulls the tension spring 806 to extend. When the partition 3 is completely slid into the partition groove 201, the pull plate 801 is released, the tension spring 806 retracts, and the tension spring 806 drives the drive block 802 to reset. The inclined groove 803 on the drive block 802 pushes the roller 804, causing the two limiting rods 805 to extend outward from the partition 3 and engage in the limiting holes 202 on the storage rack, completing the rapid locking of the partition. This facilitates quick adjustment of the position of the partition 3 and enables multi-specification modular storage.

[0023] Specific, specific, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a docking structure 6 is installed at the top of the storage rack 2, and three guide structures 4 are provided at the top of the storage room. The guide structure 4 includes a hanger 401, and a traveling structure 5 is slidably installed on the hanger 401. Two hangers 401 are installed in parallel at the top of the storage room, and another hanger 401 is installed on the traveling structure 5 on the two parallel hangers 401. A suspension structure 7 is installed on the traveling structure 5 on the hanger 401. The suspension structure 7 works in conjunction with the docking structure 6. By moving the traveling structure 5 on the guide structure 4, the suspension structure 7 lifts the docking structure 6, and the docking structure 6 lifts the storage rack 2, thereby realizing the modular handling of the storage rack 2. The walking structure 5 includes a walking frame 501, a gear 502, and a first driving member 503. Two hangers 401 mounted on the top of the storage room form a Y-axis moving guide rail, and another hanger 401 forms an X-axis guide rail. A rack 402 is provided on the hanger 401, and the walking frame 501 is provided at the top of the hanger 401. The gear 502 is rotatably mounted on the walking frame 501 and meshes with the rack 402. The first driving member 503 is mounted on the walking frame 501, and the drive shaft of the first driving member 503 is fixedly connected to the gear 502. The two ends of the hanger 401 forming the X-axis guide rail are fixed to the two walking frames 501 that move along the Y-axis. The first driving member 503 drives the gear 502 to rotate, and the gear 502 rolls on the rack 402, thereby realizing the movement of the walking frame 501.

[0024] Specifically, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the traveling frame 501 is rotatably equipped with two guide wheels 504. The guide wheels 504 roll with the hanger 401. The guide wheels 504 have grooves 505, and the rack 402 is located in the grooves 505. The traveling frame 501 drives the guide wheels 504 and the hanger 401 to roll. The setting of the guide wheels 504 makes the movement of the traveling frame 501 more stable. The grooves 505 on the guide wheels 504 allow the guide wheels 504 to cooperate with the rack 402, which limits the lateral movement of the traveling frame 501 and makes it more stable.

[0025] Specifically, such as Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, the suspension structure 7 includes a fixed frame 701, a telescopic component, and a docking component. A docking frame 506 is installed at the bottom of the traveling frame 501 that moves along the X-axis. The fixed frame 701 is installed at the bottom of the docking frame 506. A telescopic component is installed at the bottom of the fixed frame 701. A docking component is installed on the telescopic component and is connected to the docking structure 6. The telescopic component includes a first telescopic component 702, a first guide rod 703, and a docking frame 704. The first telescopic component 702 is installed at the bottom of the fixed frame 701. The docking frame 704 is fixed on the piston rod of the first telescopic component 702. The first guide rod 703 is installed at the top of the docking frame 704 and is slidably connected to the fixed frame 701. The docking structure 6 includes a cover plate 601, a docking block 602, and a positioning block 603. Four positioning blocks 603 are engaged at the top of the storage rack 2. The positioning blocks 603 are bolted to the storage rack 2. The cover plate 601 is installed at the top of the positioning block 603. The docking block 602 is installed on the cover plate 601. The docking frame 704 is engaged with the docking block 602. The piston rod of the first telescopic member 702 pushes the docking frame 704 to move up and down, adjusting the distance between the docking frame 704 and the docking block 602. The docking frame 704 drives the first guide rod 703 to slide against the fixed frame 701, making the up and down movement of the docking frame 704 more stable.

[0026] Specifically, such as Figure 3 and Figure 7As shown, the docking component includes a locking block 705, a second telescopic member 706, and a second guide rod 707. The locking block 705 is slidably mounted on the docking frame 704, and the locking block 705 engages with the docking block 602. The second guide rod 707 is fixed on the locking block 705 and is slidably connected to the docking frame 704. The sliding direction of the second guide rod 707 is perpendicular to the sliding direction of the first guide rod 703. The second telescopic member 706 is mounted on the docking frame 704, and the piston rod of the second telescopic member 706 is fixed to the locking block 705. When the second telescopic member 706 moves, it pushes the locking block 705 to extend horizontally perpendicular to the movement direction of the first telescopic member, so that the locking block 705 engages in the slot of the docking block 602, completing the mechanical locking. During the movement of the locking block 705, the locking block 705 drives the second guide rod 707 to slide against the docking frame 704, making the movement of the locking block 705 more stable.

[0027] In use, the entire system's walking, lifting, and docking actions are uniformly controlled by a PLC controller. The controller is electrically connected to the first drive component 503 (preferably a servo motor), the first telescopic component 702 (preferably a hydraulic cylinder), and the second telescopic component 706 (preferably a hydraulic cylinder). The two hydraulic cylinders are connected to an external hydraulic station via oil pipes. The hydraulic station includes an oil pump, an oil tank, and an electromagnetic directional valve. The inlet of the electromagnetic directional valve is connected to the outlet of the oil pump, and the return port is connected to the oil tank. The two working ports are connected to the rodless chamber and the rod chamber of the hydraulic cylinder, respectively. The electromagnetic directional valve is electrically connected to the PLC controller. The PLC controller controls the valve core of the electromagnetic directional valve to switch directions by outputting electrical signals, thereby controlling the extension or retraction of the piston rod of the hydraulic cylinder. The operator selects a suitable partition slot 201 on the storage rack 2 according to the height or width of the material box, and inserts the partition 3 into the corresponding slot. Then, the operator pulls the T-shaped pull plate 801, which drives the drive block 802 to slide inside the partition 3. The inclined groove 803 on the drive block 802 pushes the roller 804, causing the two limit rods 805 to slide into the partition 3. The drive block 802 pulls the tension spring 806 to extend. After the partition 3 has completely slid into the partition slot 201, the operator releases the pull plate 801, the tension spring 806 retracts, and the tension spring 806 drives the drive block 802 to reset. The inclined groove 803 on the drive block 802 pushes the roller 804, causing the two limit rods 805 to extend outward from the partition 3 and engage in the limit holes 202 on the storage rack, thus completing the quick locking of the partition. This facilitates quick adjustment of the position of the partition 3 and enables multi-specification modular storage.

[0028] The controller activates the two first drive units 503 in the Y-axis direction. The first drive units 503 drive the gear 502 to rotate, and the gear 502 rolls on the rack 402, thereby moving the walking frame 501. The walking frame 501 drives the guide wheel 504 and the hanger 401 to roll. The guide wheel 504 makes the movement of the walking frame 501 more stable. The guide wheel 504 has a groove 505, which allows the guide wheel 504 to cooperate with the rack 402 to limit the lateral movement of the walking frame 501, thus improving stability. The walking frame 501 is driven to move along the two parallel hangers 401 on the top of the storage room, thereby moving the hanger in the X-axis direction and its suspension structure 7 to the top of the target storage shelf. Subsequently, the controller controls the first drive unit 503 in the X-axis direction to accurately position the suspension structure 7 in the X-axis direction, ensuring that the docking frame 704 is directly aligned with the docking block 602 on the top of the storage shelf.

[0029] The controller issues a command to activate the first telescopic component 702, causing the piston rod to extend and push the docking frame 704 downward. The docking frame 704 drives the first guide rod 703 to slide against the fixed frame 701, making the up-and-down movement of the docking frame 704 more stable until the docking frame 704 is engaged with the docking block 602. At this time, the controller controls the second telescopic component 706 to move, pushing the locking block 705 to extend horizontally perpendicular to the direction of movement of the first telescopic component, so that the locking block 705 is engaged in the slot of the docking block 602, completing the mechanical locking. During the movement of the locking block 705, the locking block 705 drives the second guide rod 707 to slide against the docking frame 704, making the movement of the locking block 705 more stable. After locking is confirmed, feedback can be obtained via limit switch or pressure sensor. The controller then restarts the first telescopic component 702, the piston rod retracts, and the storage rack 2 is lifted off the base 1 as a whole. Subsequently, the controller synchronously or in stages controls the first drive component 503 in the Y and X axes, causing the traveling structure 5 to move along the hanger and transport the storage rack to the target position. After reaching the target position, the controller controls the first telescopic component 702 to extend and place the storage rack smoothly on the new base 1. After confirming that it is in place, the controller controls the second telescopic component 706 to retract, causing the locking block 705 to disengage from the docking block 602. Then, the controller controls the first telescopic component 702 to retract, causing the docking frame 704 to rise and reset, completing the entire modular handling process.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A modular three-dimensional storage system adaptable to multi-specification bins, comprising multiple bases (1), wherein the multiple bases (1) are arranged symmetrically in pairs, and multiple storage racks (2) are snapped onto each base (1), characterized in that: The storage rack (2) is provided with a partition groove (201) and a limiting hole (202). A partition (3) can be installed in the partition groove (201). A limiting structure (8) is provided on the partition (3). The limiting structure (8) engages with the limiting hole (202). The partition (3) can be quickly installed through the limiting structure (8). The top of the storage rack (2) is equipped with a docking structure (6), and the top of the storage room is provided with three guide structures (4). The guide structure (4) includes a hanger (401), and a walking structure (5) is slidably installed on the hanger (401). Two of the hangers (401) are installed in parallel at the top of the storage room, and another hanger (401) is installed on the walking structure (5) on the two hangers (401) that are set in parallel. A suspension structure (7) is installed on the walking structure (5) on the hanger (401). The suspension structure (7) is used in conjunction with the docking structure (6). By moving the walking structure (5) on the guide structure (4), the suspension structure (7) lifts the docking structure (6), and the docking structure (6) lifts the storage rack (2), thereby realizing the modular handling of the storage rack (2).

2. The modular three-dimensional storage system adaptable to multi-specification bins according to claim 1, characterized in that: The limiting structure (8) includes a limiting rod (805), and two limiting rods (805) are slidably provided on the partition (3), and the limiting rods (805) engage with the limiting hole (202).

3. The modular three-dimensional warehousing system adaptable to multi-specification bins according to claim 2, characterized in that: A drive block (802) is slidably provided in the partition (3). Two symmetrically arranged inclined grooves (803) are provided on the drive block (802). A roller (804) is slidably provided in the inclined groove (803). The roller (804) is rotatably connected to the limiting rod (805).

4. The modular three-dimensional storage system adaptable to multi-specification bins according to claim 3, characterized in that: A tension spring (806) is installed between the drive block (802) and the partition (3), and a T-shaped pull plate (801) is fixed on the drive block (802).

5. The modular three-dimensional warehousing system adaptable to multi-specification bins according to claim 1, characterized in that: The walking structure (5) includes a walking frame (501), a gear (502) and a first driving member (503). Two hangers (401) installed at the top of the storage room form a Y-axis moving guide rail, and another hanger (401) forms an X-axis guide rail. A rack (402) is provided on the hanger (401). The top of the hanger (401) is provided with a walking frame (501). A gear (502) is rotatably provided on the walking frame (501). The gear (502) meshes with the rack (402). The first driving member (503) is installed on the walking frame (501). The drive shaft of the first driving member (503) is fixedly connected to the gear (502). The two ends of the hanger (401) forming the X-axis guide rail are fixed to the two walking frames (501) that move along the Y-axis.

6. The modular three-dimensional warehousing system adaptable to multi-specification bins according to claim 5, characterized in that: The walking frame (501) is provided with two guide wheels (504) that rotate. The guide wheels (504) roll with the hanger (401). The guide wheels (504) are provided with grooves (505), and the rack (402) is located in the grooves (505).

7. The modular three-dimensional warehousing system adaptable to multi-specification bins according to claim 5, characterized in that: The suspension structure (7) includes a fixed frame (701), a telescopic component, and a docking component. A docking frame (506) is installed at the bottom end of the traveling frame (501) that moves along the X-axis. A fixed frame (701) is installed at the bottom end of the docking frame (506). A telescopic component is installed at the bottom end of the fixed frame (701). A docking component is installed on the telescopic component. The docking component is connected to the docking structure (6).

8. The modular three-dimensional storage system adaptable to multi-specification bins according to claim 7, characterized in that: The telescopic component includes a first telescopic component (702), a first guide rod (703), and a docking frame (704). The first telescopic component (702) is installed at the bottom of the fixed frame (701). The docking frame (704) is fixed on the piston rod of the first telescopic component (702). The first guide rod (703) is installed at the top of the docking frame (704). The first guide rod (703) is slidably connected to the fixed frame (701).

9. The modular three-dimensional warehousing system adaptable to multi-specification bins according to claim 8, characterized in that: The docking structure (6) includes a cover plate (601), a docking block (602), and a positioning block (603). The top of the storage rack (2) is fitted with four positioning blocks (603). The positioning blocks (603) are connected to the storage rack (2) by bolts. The top of the positioning block (603) is fitted with a cover plate (601). The cover plate (601) is fitted with a docking block (602). The docking frame (704) is engaged with the docking block (602).

10. The modular three-dimensional storage system adaptable to multi-specification bins according to claim 9, characterized in that: The docking component includes a locking block (705), a second telescopic component (706), and a second guide rod (707). The locking block (705) is slidably provided on the docking frame (704), and the locking block (705) engages with the docking block (602). The second guide rod (707) is fixed on the locking block (705), and the second guide rod (707) is slidably connected to the docking frame (704). The sliding direction of the second guide rod (707) is perpendicular to the sliding direction of the first guide rod (703). The second telescopic component (706) is installed on the docking frame (704), and the piston rod of the second telescopic component (706) is fixed to the locking block (705).

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