Poison anesthetic storage device

Abstract

The invention belongs to the technical field of medicine storage equipment, and particularly relates to a poison anesthetic storage device which comprises a control cabinet and a storage cabinet, the storage cabinet is provided with a plurality of storage cavities, and the poison anesthetic storage device further comprises driving assemblies arranged in the storage cavities; the storage assembly is arranged on the driving assembly and is driven by the driving assembly to move; the linkage assembly is arranged below the driving assembly and is in transmission connection with the driving assembly; the blocking piece is fixedly connected to an opening and closing door of the storage cabinet; the drawer is inserted into the storage cavity of the storage cabinet in a drawing manner; and the locking assembly comprises a locking part arranged at the drawer, and a control part used for controlling the locking part is arranged on the control cabinet. According to the invention, automatic first-in first-out management of the anesthetic can be realized, the operation is simplified, and the safety and efficiency are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of pharmaceutical storage equipment, and specifically relates to a storage device for narcotic drugs. Background Technology

[0002] Controlled drugs (including narcotic drugs and psychotropic substances) are strictly controlled materials in medical institutions. Existing storage cabinets or devices for controlled drugs mostly adopt a simple multi-layered drawer structure, with each drawer equipped with an independent physical lock. This structure has revealed two main problems in practical use: First, inefficient drug turnover management easily leads to drug expiration. When nurses or pharmacists replenish medications, they often place the newly replenished drugs directly at the front of the drawer or in the most easily accessible position. When retrieving medications, they also habitually take them from the front. This results in medications that were placed at the back of the drawer accumulating over time, failing to adhere to the "first-in, first-out" drug management principle, increasing the risk of drug expiration, causing waste, and potentially creating safety hazards.

[0003] Secondly, the process is cumbersome and inconvenient to manage. Different types or batches of controlled substances usually need to be stored in separate, locked drawers. When retrieving the medication, managers need to use multiple different keys to open multiple drawers sequentially, a tedious and time-consuming process that can affect efficiency in emergencies. The daily management and handover of keys also increases the workload and the risk of errors.

[0004] Current improvement solutions focus on electronic management and recording, such as using electronic combination locks, fingerprint recognition, or RFID tracking. However, these solutions are costly, structurally complex, and dependent on power and software systems. Therefore, there is an urgent need for a mechanically innovative drug storage device that can effectively achieve "first-in, first-out" management and simplify drug retrieval operations. Summary of the Invention

[0005] The purpose of this invention is to provide a storage device for controlled substances that enables automatic first-in-first-out management of controlled substances, simplifies operation, and improves safety and efficiency.

[0006] The specific technical solution adopted by this invention is as follows: A storage device for narcotic drugs includes a control cabinet and a storage cabinet, wherein the storage cabinet is provided with multiple storage cavities, and further includes: A drive assembly disposed within the storage cavity; A storage component, which is disposed on the driving component and moved by the driving component; A linkage component is disposed below the drive component and is connected to the drive component in a transmission manner; A barrier, which is fixedly connected to the opening and closing door of the storage cabinet; A drawer is inserted in the storage cavity of the storage cabinet in a drawer-pulling manner; A locking assembly is arranged on the drawer, and a control part for controlling the locking part is arranged on the control cabinet; When the drawer is pushed into the storage cavity, the linkage assembly is triggered, and the storage assembly is moved to a preset position by the driving assembly, and the medicine in the storage assembly falls into the drawer at the position.

[0007] In a preferred embodiment, the driving assembly comprises driving shafts, the two driving shafts are rotatably connected in the storage cavity through bearings, driving rollers are fixedly sleeved on the driving shafts, and transmission belts are sleeved on the two driving rollers.

[0008] In a preferred embodiment, the storage assembly comprises an L-shaped plate, the L-shaped plate is fixedly connected to the transmission belt through a support rod, a cover plate is rotatably connected to the shaft of the L-shaped plate, a torsion spring is fixedly connected between the cover plate and the L-shaped plate, and an elastic rod is fixedly connected to one end of the cover plate.

[0009] In a preferred embodiment, the linkage assembly comprises a linkage shaft, the linkage shaft is rotatably connected in the storage cavity through a bearing, a first gear and a second gear are installed on the linkage shaft, and a third gear is installed at both ends of one of the driving shafts.

[0010] In a preferred embodiment, the first gear is fixedly installed on the linkage shaft, the second gear is rotatably connected to the linkage shaft through a bearing, and a ratchet-pawl structure is arranged between the second gear and the linkage shaft.

[0011] In a preferred embodiment, the third gear is rotatably connected to the driving shaft through a bearing, the third gear is annularly distributed and has a movable slot, a movable plate is slidably connected in the movable slot, a first compression spring is fixedly connected between the movable plate and the inner wall of the movable slot, a lock rod is slidably inserted into one end of the movable slot, and the lock rod is fixedly connected to the movable plate.

[0012] In a preferred embodiment, the blocking member comprises a first circular rod, the first circular rod is fixedly connected to the switch door on the storage cabinet, and a second circular rod is fixedly connected to the first circular rod.

[0013] In a preferred scheme, the locking part comprises a mounting groove, which is arranged on the storage cabinet and located at the drawer, a lower end of the mounting groove is fixedly connected with a sliding rail, a sliding block is slidably connected on the sliding rail, a vertical rod is fixedly connected on the sliding block, a limiting block is fixedly connected on the vertical rod and penetrates to the outside of the mounting groove and is inserted into the groove arranged on the side of the drawer, a hollow cylinder is fixedly connected in the mounting groove, first piston rods are pistonically inserted into both ends of the hollow cylinder and are fixedly connected with the vertical rod, a first piston plate is fixedly connected on one end of the first piston rod in the hollow cylinder, and a second compression spring is fixedly connected between the first piston plate and the hollow cylinder.

[0014] In a preferred scheme, the control part comprises a containing groove, which is arranged on the control cabinet, a sleeve is fixedly embedded at the front end of the containing groove, a control rod is rotatably connected in the sleeve through a bearing, a cam is fixedly connected on one end of the control rod in the containing groove, a plurality of piston cavities are arranged on the control cabinet and are annularly distributed on the outside of the containing groove, a second piston rod is pistonically inserted into one end of the piston cavity, a second piston plate is fixedly connected on one end of the second piston rod in the piston cavity, a tension spring is fixedly connected between the second piston plate and the piston cavity, and a liquid delivery pipe is connected between the piston cavity and the hollow cylinder.

[0015] In a preferred scheme, a scale is arranged on the front surface of the sleeve, a pointer is fixedly connected on the front end of the control rod, and a ratchet-pawl-ratchet wheel structure is arranged between the control rod and the sleeve.

[0016] The technical effects achieved by the application are as follows: The linkage assembly, the driving assembly and the storage assembly are cooperatively matched to convert the drawer pushback action into the work position advancing movement of the storage assembly, and the blocking member and the elastic cover plate structure are combined to automatically put a box of medicine above the drawer into the drawer after each reset operation. The application adopts the centralized control hydraulic locking system, and a single control rod on the control cabinet is matched with the cam and the multi-way hydraulic circuit to selectively unlock any target drawer without carrying and switching multiple physical keys. The present application mainly adopts a pure mechanical structure, is assisted by simple hydraulic transmission, and does not depend on power, network or complex software. The medicine dispensing mode is physically isolated from the medicine taking mode through a switch door linkage blocking piece, and a sliding clutch structure is arranged to prevent damage to the mechanism due to misoperation. The whole device is compact in structure, reliable in action and easy to maintain, meets the requirements of medicine storage, and reduces the procurement and operation and maintenance costs of medical institutions. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the whole application; Figure 2 is a structural schematic diagram of a single storage cavity of the application; Figure 3 is a side sectional view of a single storage cavity of the application; Figure 4 is a structural schematic diagram of the inside of a single storage cavity of the application; Figure 5 is a connection schematic diagram of the third gear and the driving shaft of the application; Figure 6 is an enlarged schematic diagram of part A shown in the application Figure 5 ; Figure 7 is a connection schematic diagram of the linkage shaft and the second gear of the application; Figure 8 is a structural schematic diagram of the storage assembly of the application; Figure 9 is a partial structural schematic diagram of the whole application; Figure 10 is an enlarged schematic diagram of part B shown in the application Figure 9 ; Figure 11 is an enlarged schematic diagram of part C shown in the application Figure 9 ; Figure 12 is a connection schematic diagram of the control rod and the sleeve of the application; Figure 13 is an enlarged schematic diagram of part D shown in the application Figure 9 .

[0018] In the drawings, the component list represented by each reference numeral is as follows: 1, control cabinet; 2, storage cabinet; 21, storage cavity; 3, driving assembly; 4, storage assembly; 5, linkage assembly; 6, blocking piece; 7, drawer; 8, locking assembly; 31, driving shaft; 32, driving roller; 33, transmission belt; 41, L-shaped plate; 42, cover plate; 43, torsional spring; 44, elastic rod; 51, linkage shaft; 52, first gear; 53, second gear; 54, third gear; 541, movable slot; 542, movable plate; 543, first compression spring; 544, locking rod; 61, first round rod; 62, second round rod; 81, locking part; 82, control part; 811, mounting groove; 812, sliding rail; 813, sliding block; 814, vertical rod; 815, limiting block; 816, hollow cylinder; 817, first piston rod; 818, first piston plate; 819, second compression spring; 821, accommodating groove; 822, sleeve; 823, control rod; 824, cam; 825, piston cavity; 826, second piston rod; 827, second piston plate; 828, tension spring; 829, infusion tube. DETAILED DESCRIPTION

[0019] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0020] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0021] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In a preferred embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0022] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0023] Please refer to the accompanying Figures 1 to 3 As shown in the drawings, the embodiment provides a narcotic drug storage device, which comprises a control cabinet 1 and a storage cabinet 2, and the two are fixedly connected, the storage cabinet 2 is provided with a plurality of storage cavities 21, and further comprises: A driving assembly 3 is arranged in the storage cavity 21; A storage assembly 4 is arranged on the driving assembly 3 and is driven by the driving assembly 3 to move, and the boxed medicine is stored in the storage assembly 4; Linkage assembly 5, linkage assembly 5 is arranged below the driving assembly 3, and is in transmission connection with the driving assembly 3; Barrier 6, barrier 6 is fixedly connected on the opening and closing door of the storage cabinet 2, and the barrier 6 includes a first circular rod 61, which is fixedly connected on the opening and closing door of the storage cabinet 2, and a second circular rod 62 is fixedly connected on the first circular rod 61, the opening and closing door is in the closed state in the normal state, only when the medicine needs to be supplemented, a special key is used to open; Drawer 7, drawer 7 is inserted in the storage cavity 21 of the storage cabinet 2 in a drawer type; Locking assembly 8, locking assembly 8 includes locking part 81 arranged at drawer 7, control cabinet 1 is provided with control part 82 for controlling locking part 81; Wherein, when the drawer 7 is pushed into the storage cavity 21, the linkage assembly 5 can be triggered, and then the storage assembly 4 is driven to move to a preset position by the driving assembly 3, and the medicine in the storage assembly 4 falls into the drawer 7 at the position.

[0024] In this embodiment, Authorized medicine taking: the operator selects and unlocks the locking part 81 corresponding to the target drawer 7 by operating the control part 82 on the control cabinet 1.

[0025] Medicine taking action: pull out the unlocked drawer 7 and take out the pre-placed medicine.

[0026] Automatic medicine supplement and turnover: push the empty drawer 7 back to the storage cavity 21. The return movement of the drawer 7 triggers the driving assembly 3 through the linkage assembly 5, drives the storage assembly 4 to move a station, so that the medicine with long storage time at the upper end of the drawer 7 falls into the drawer 7, and prepares for the next time of taking medicine. At the same time, the subsequent medicines are sequentially supplemented.

[0027] Batch medicine supplement: open the opening and closing door of the storage cabinet 2, move the barrier 6, manually drive the system, and fill the empty storage assembly 4 to the medicine supplement station, and the system continues to follow the "first in first out" principle.

[0028] Secondly, please refer to Figure 4 , the driving assembly 3 includes a driving shaft 31, two driving shafts 31 are rotatably connected in the storage cavity 21 through bearings, a driving roller 32 is fixedly sleeved on the driving shaft 31, and two driving rollers 32 are sleeved with a transmission belt 33.

[0029] Thirdly, please refer to Figure 8The storage assembly 4 comprises an L-shaped plate 41 fixedly connected to the transmission belt 33 by a support rod, a cover plate 42 rotatably connected to the shaft of the L-shaped plate 41, a torsion spring 43 fixedly connected between the L-shaped plate 41 and the cover plate 42, and an elastic rod 44 fixedly connected to one end of the cover plate 42. Block rods are arranged on both sides of the L-shaped plate 41, and a block rod is arranged at the end of the cover plate 42 close to the elastic rod 44.

[0030] Secondly, please refer to Figure 4 and Figure 7 The linkage assembly 5 comprises a linkage shaft 51 rotatably connected in the storage cavity 21 by a bearing, a first gear 52 and a second gear 53 installed on the linkage shaft 51, and a third gear 54 installed at both ends of one of the drive shafts 31.

[0031] In this embodiment, when the locking assembly 8 is unlocked, the operator can pull the drawer 7 forward (i.e. away from the storage cabinet 2) to take out the medicine already in the drawer 7. This action is a simple linear motion, which aims to take the medicine that has been put into the drawer 7 in the previous cycle. At this time, the entire transmission system is not triggered and is in a standby state. After taking the medicine, the drawer 7 needs to be pushed back into the storage cavity 21 to reset the device and prepare for the next time of taking medicine. The return push action of the drawer 7 is the starting instruction for the operation of the entire system.

[0032] When the drawer 7 is pushed back, the tooth groove (forming a rack structure) opened on the side of the drawer 7 is engaged with the second gear 53 of the linkage assembly 5. This efficiently converts the linear motion of the drawer 7 into the rotational motion of the gear.

[0033] The rotation of the linkage shaft 51 drives the synchronous rotation of the first gear 52 thereon. The first gear 52 transmits power to the third gear 54 on the drive shaft 31 through the tooth belt. The rotational motion of the drive shaft 31 is finally transmitted to the drive rollers 32 fixed thereon. The two drive rollers 32 are sleeved with the transmission belt 33, thereby converting the rotational motion into the circular linear motion of the transmission belt 33. The operation of the transmission belt 33 drives the entire storage assembly 4 fixedly connected above the transmission belt 33 to move forward by one station. The storage assembly 4 stores the medicine that needs to be taken subsequently.

[0034] When the storage assembly 4 moves to a specific position below (i.e. a preset release station), it interacts with the fixed blocking piece 6, so that the cover plate 42 thereon is opened, and the boxed medicine automatically falls into the drawer 7 which has been reset (empty) under the action of gravity. This completes the "pre-delivery" action, ensuring that the medicine is in place for the next time of taking medicine, realizing a fast and continuous medicine taking process, and strictly following the "first-in first-out" principle.

[0035] Specifically, under the drive of the drive assembly 3, the storage assembly 4 carrying the medicine moves circularly along with the transmission belt 33. When the assembly moves to the preset release station below the storage cavity 21, the elastic rod 44 on the assembly is in contact with the blocking piece 6 fixed to the switch door of the storage cabinet 2. Specifically, the elastic rod 44 is in contact with the second round rod 62 on the blocking piece 6. At this time, the kinetic energy of the storage assembly 4 in the drive of the transmission belt 33 continues to advance, and interacts with the fixed blocking force exerted by the second round rod 62, thereby triggering the release sequence. The elastic rod 44 is blocked by the second round rod 62, and a reverse torque is exerted on the cover plate 42 fixed with the elastic rod 44. The torque overcomes the pre-tightening force of the torsional spring 43, forcing the cover plate 42 to rotate around the shaft connected with the L-shaped plate 41. The rotation of the cover plate 42 causes the medicine originally enclosed in the accommodation space formed by the L-shaped plate 41 and the cover plate 42 to lose the limit. The medicine slides off the opened L-shaped plate 41 under the action of its own gravity and falls into the reset (empty) drawer 7 below. This design ensures that the transfer of the medicine relies entirely on gravity without the need for additional power, and the structure is simple and reliable. As the transmission belt 33 continues to move, the L-shaped plate 41 continues to advance with the entire storage assembly 4. The blocking force on the elastic rod 44 continues to increase, and when the force reaches a certain threshold, the elastic rod 44 itself deforms elastically. This design allows the elastic rod 44 to "bow" or "yield", thereby smoothly passing through the fixed second round rod 62. At the moment when the elastic rod 44 completely passes through the second round rod 62, the cover plate 42 reversely rotates rapidly and automatically rebounds to the closed position due to the sudden disappearance of the blocking force under the action of the elastic potential energy stored in the torsional spring 43, thereby preparing for the next time of carrying medicine. The combination of "elastic rod 44 bending" and "torsional spring 43 resetting" realizes the instantaneous completion of the release action and the automatic resetting of the mechanism, ensuring the smoothness of the circulation operation. Through the above mechanism, each time the drawer 7 is pushed back to the storage cavity 21, the return operation will trigger the drive assembly 3 to move the storage assembly 4 by a fixed distance (i.e. the angle of one station), and eventually make one storage assembly 4 move to the release station and automatically deliver one box of medicine in it to the drawer 7. The circulation movement of the transmission system naturally follows the "first-in first-out" queue principle, completely avoiding the accumulation and expiration of medicines.

[0036] Please refer to Figure 5 and Figure 6 , the third gear 54 is rotatably connected to the drive shaft 31 through a bearing, the third gear 54 is annularly distributed and has a movable groove 541 formed therein, the movable groove 541 is slidably connected with a movable plate 542, the movable plate 542 is fixedly connected with a first compression spring 543 between the inner wall of the movable groove 541, a lock rod 544 is slidably inserted into one end of the movable groove 541, and the lock rod 544 is fixedly connected with the movable plate 542, wherein a semispherical recess compatible with the end of the lock rod 544 is formed in the drive shaft 31.

[0037] In this embodiment, before replenishing the medication, the operator first needs to open the door of the storage cabinet 2. The barrier 6 fixed to the door moves synchronously to the outside of the storage cavity 21. At this time, if the drive assembly 3 drives the storage assembly 4 to rotate cyclically, the elastic rod 44 on it will not contact the barrier 6 throughout the entire movement path. This means that the cover 42 will not be passively opened, and the medication will not fall accidentally, thus creating the necessary conditions for safe and undisturbed medication replenishment. This design distinguishes the daily medication retrieval mode from the maintenance replenishment mode by the state of the door opening and closing. The operator manually rotates the drive shaft 31 located below. This manual driving force is transmitted through the drive assembly 3 (drive roller 32, transmission belt 33), causing all storage assemblies 4 to rotate together. The operator rotates the empty storage assembly 4 to the frontmost position, which is the most convenient for operation. The operator manually flips the cover 42 of the target storage assembly 4, puts the new medication into the storage space formed by the L-shaped plate 41 and the cover 42, and then manually closes the cover 42. This cyclical rotation method ensures that vacant workstations corresponding to medicines that have been stored for a long time are prioritized for replenishment, thus solidifying the "first-in, first-out" management logic from the source of replenishment.

[0038] When replenishing medicine, since drawer 7 is in the closed and locked state, its rack engages with the second gear 53, locking the entire transmission system. To prevent damage to the mechanism from forced manual rotation, a sliding clutch structure (composed of movable groove 541, movable plate 542, first compression spring 543, and locking rod 544) is provided between drive shaft 31 and third gear 54. When the manually applied torque is too large, the inclined end of locking rod 544 is compressed back into movable groove 541, compressing the first compression spring 543, causing relative slippage between third gear 54 and drive shaft 31, thereby driving transmission belt 33 without moving drawer 7, facilitating medicine replenishment.

[0039] Specifically: When the operator manually rotates the drive shaft 31 with a torque exceeding the normal resistance, relative movement is required between the third gear 54 and the drive shaft 31. At this time, the hemispherical end of the locking rod 544 is subjected to enormous pressure from the corresponding groove wall on the drive shaft 31. This pressure forces the locking rod 544 to retract into the movable groove 541. The movement of the locking rod 544 pushes the movable plate 542 to move together and compresses the first compression spring 543. As the locking rod 544 retracts, its end disengages from the groove of the drive shaft 31. Once disengaged, the torque transmission path between the third gear 54 and the drive shaft 31 is cut off. At this time, although the operator is rotating the drive shaft 31, the third gear 54 "slips" in its original position (i.e., the drive shaft 31 spins freely, while the third gear 54 does not rotate), thus preventing the entire locked transmission chain (linkage shaft 51, second gear 53, etc.) from moving forcibly, effectively avoiding damage to the mechanism due to forced operation.

[0040] Please refer to it again. Figure 7 The first gear 52 is fixedly mounted on the linkage shaft 51, and the second gear 53 is rotatably connected to the linkage shaft 51 through a bearing. A pawl-ratchet structure is provided between the second gear 53 and the linkage shaft 51.

[0041] In this embodiment, the second gear 53 is connected to the linkage shaft 51 via a pawl-ratchet structure. This structure allows the second gear 53 to drive the linkage shaft 51 to rotate only in one direction (corresponding to the direction in which the drawer 7 is pushed in); when the drawer 7 is pulled out, the second gear 53 rotates freely, and the linkage shaft 51 does not move (the pawl-ratchet structure is common knowledge in the prior art, and those skilled in the art should be clear about it, so it will not be described in detail here).

[0042] Please refer to it again. Figures 9 to 11 The locking part 81 includes a mounting groove 811, which is opened on the storage cabinet 2 and located at the drawer 7. The lower end of the mounting groove 811 is fixedly connected to a slide rail 812. A slider 813 is slidably connected to the slide rail 812. A vertical rod 814 is fixedly connected to the slider 813. A limit block 815 is fixedly connected to the vertical rod 814, and the limit block 815 extends through to the outside of the mounting groove 811 and is inserted into a groove opened on the side of the drawer 7. A hollow cylinder 816 is fixedly connected inside the mounting groove 811. Both ends of the hollow cylinder 816 are piston-type inserted with a first piston rod 817, and the first piston rod 817 is fixedly connected to the vertical rod 814. One end of the first piston rod 817 located inside the hollow cylinder 816 is fixedly connected to a first piston plate 818. A second compression spring 819 is fixedly connected between the first piston plate 818 and the hollow cylinder 816.

[0043] Please refer to it again. Figure 1 and Figures 9 to 13 The control unit 82 includes a receiving groove 821, which is located on the control cabinet 1. A sleeve 822 is fixedly embedded in the front end of the receiving groove 821. A control rod 823 is rotatably connected to the sleeve 822 via a bearing. One end of the control rod 823 located in the receiving groove 821 is fixedly connected to a cam 824. The control cabinet 1 also has multiple piston chambers 825, which are arranged in a ring around the outside of the receiving groove 821. A second piston rod 826 is piston-type inserted into one end of each piston chamber 825. A second piston plate 827 is fixedly connected to one end of the piston chamber 825. A tension spring 828 is fixedly connected between the second piston plate 827 and the piston chamber 825. An infusion tube 829 is connected between the piston chamber 825 and the hollow cylinder 816. A scale line is provided on the front side of the sleeve 822. A pointer is fixedly connected to the front end of the control rod 823. A pawl-ratchet structure is provided between the control rod 823 and the sleeve 822. An appropriate amount of hydraulic oil is injected into the piston chamber 825, the hollow cylinder 816, and the infusion tube 829.

[0044] In this embodiment, when medication needs to be retrieved, the operator inserts a special key into the lock cylinder of the control lever 823 and turns it. The rotation of the control lever 823 directly drives the cam 824, which is fixedly connected to it, to rotate synchronously. In the initial state, the profile of the cam 824 does not exert pressure on any of the second piston rods 826, and all locking parts 81 are in the locked drawer 7 state. Multiple piston chambers 825 are designed, and each piston chamber 825 is connected to a specific hollow cylinder 816 through an independent infusion tube 829, thereby controlling a corresponding locking part 81.

[0045] When the control lever 823 rotates a specific angle (e.g., 90 degrees), the protruding portion of the cam 824 begins to compress one of the second piston rods 826, forcing it to contract into its corresponding piston chamber 825. The inward movement of the second piston rod 826 pushes the second piston plate 827 within the piston chamber 825, compressing the hydraulic oil within and stretching the tension spring 828. Under pressure, the compressed hydraulic oil is delivered through a dedicated infusion pipe 829 connected to the piston chamber 825 to the corresponding hollow cylinder 816.

[0046] After hydraulic oil enters the target hollow cylinder 816, it drives the locking actuator to actuate: the hydraulic oil flowing into the hollow cylinder 816 pushes the two first piston plates 818 inside the cylinder to overcome the elastic force of the second compression spring 819 and move away from each other. The movement of each first piston plate 818 is transmitted to the vertical rod 814 through the first piston rod 817, which ultimately causes the limiting block 815 fixed to the end of the vertical rod 814 to produce radial displacement. The two limiting blocks 815 move away from each other, thus disengaging from the groove on the side of the drawer 7. During the entire movement of the vertical rod 814, the slider 813 slides along the slide rail 812. This structure ensures that the vertical rod 814 and the limiting block 815 can only move along a preset straight trajectory, effectively preventing deflection or jamming, and ensuring the reliability and accuracy of the action. Once the limiting block 815 disengages from the groove, the corresponding drawer 7 loses its mechanical lock and can be smoothly pulled out for medicine retrieval. Thus, a selective unlocking operation for a specific drawer 7 is completed.

[0047] As the control lever 823 continues to rotate to the next angle (e.g., 180 degrees), the compression of the previous second piston rod 826 is released. At this time, the stretched tension spring 828 and the compressed second compression spring 819 release their elastic potential energy, pulling the second piston plate 827 back to its original position and pushing the first piston plate 818 back to its original position, thereby driving the hydraulic oil back into the piston chamber 825 and causing the limit block 815 to extend again under the action of the spring force, automatically restoring the locking of the drawer 7. At the same time, the cam 824 will begin to compress the next second piston rod 826, triggering the unlocking process of the next corresponding locking part 81. By operating in this manner, the corresponding drawer 7 can be unlocked by rotating the control lever 823, achieving efficient sequential medicine retrieval management.

[0048] The sleeve 822 has scale lines on the front, which, together with the pointer at the front end of the control lever 823, can intuitively display the angle of rotation of the control lever 823, making it easy for the operator to accurately identify and position the drawer 7 to be operated.

[0049] A pawl-ratchet structure is provided between the control lever 823 and the sleeve 822. This structure restricts the control lever 823 to rotate in only one direction, preventing accidental changes in the locked state due to unintended rotation. At the same time, the pawl compresses the spring during rotation, generating a damping sensation, which improves the stability of the operating feel and prevents the control lever 823 from rotating arbitrarily.

[0050] The working principle of this invention is as follows: The operator selects and unlocks the target drawer 7 via the control unit 82 on the control cabinet 1, pulls out the drawer 7 to retrieve the medicine that has been pre-placed there; when the empty drawer 7 is pushed back, its rack and pinion structure drives the linkage component 5, which in turn drives the storage component 4 to move forward one position through the transmission system, so that a box of medicine above the drawer 7 automatically falls into the reset drawer 7 under the action of gravity, realizing "first in first out"; when replenishing medicine, the storage cabinet 2 door is opened, the barrier 6 is removed, and the empty position can be safely filled by manually rotating the drive shaft 31. The whole process does not require electricity and relies on a purely mechanical and hydraulic structure to complete the closed-loop management of medicine retrieval, turnover and replenishment.

[0051] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A storage device for narcotic drugs, comprising a control cabinet and a storage cabinet, wherein the storage cabinet is provided with multiple storage cavities, characterized in that, Also includes: A drive assembly is disposed within the storage cavity; The storage component is mounted on the driving component and is moved by the driving component. The linkage component is located below the drive component and is connected to the drive component for transmission. The barrier is fixedly connected to the opening and closing door of the storage cabinet; The drawer is a pull-out type that is inserted into the storage cavity of the storage cabinet; The locking assembly includes a locking part disposed at the drawer, and a control part for controlling the locking part is disposed on the control cabinet; When the drawer is pushed into the storage cavity, it can trigger the linkage component, which in turn drives the storage component to move to a preset position, and at that position, the medicine in the storage component falls into the drawer.

2. The narcotic drug storage device according to claim 1, characterized in that: The drive assembly includes drive shafts, two drive shafts are rotatably connected in the storage cavity via bearings, drive rollers are fixedly sleeved on the drive shafts, and transmission belts are sleeved on the two drive rollers.

3. The narcotic drug storage device according to claim 2, characterized in that: The storage assembly includes an L-shaped plate, which is fixedly connected to the transmission belt by a support rod. A cover plate is rotatably connected to the shaft of the L-shaped plate, and a torsion spring is fixedly connected between the cover plate and the L-shaped plate. An elastic rod is fixedly connected to one end of the cover plate.

4. A storage device for narcotic drugs according to claim 2, characterized in that: The linkage assembly includes a linkage shaft, which is rotatably connected to the storage cavity via bearings. A first gear and a second gear are mounted on the linkage shaft, and a third gear is mounted on both ends of one of the drive shafts.

5. A narcotic drug storage device according to claim 4, characterized in that: The first gear is fixedly mounted on the linkage shaft, and the second gear is rotatably connected to the linkage shaft through a bearing. A pawl-ratchet structure is provided between the second gear and the linkage shaft.

6. A narcotic drug storage device according to claim 4, characterized in that: The third gear is rotatably connected to the drive shaft via a bearing. The third gear has movable slots arranged in a ring. A movable plate is slidably connected inside the movable slot. A first compression spring is fixedly connected between the movable plate and the inner wall of the movable slot. A locking rod is slidably inserted into one end of the movable slot and is fixedly connected to the movable plate.

7. A narcotic drug storage device according to claim 1, characterized in that: The barrier includes a first round rod, which is fixedly connected to the switch door on the storage cabinet, and a second round rod is fixedly connected to the first round rod.

8. A narcotic drug storage device according to claim 1, characterized in that: The locking part includes a mounting groove, which is opened on the storage cabinet and located at the drawer. A slide rail is fixedly connected to the lower end of the mounting groove. A slider is slidably connected to the slide rail. A vertical rod is fixedly connected to the slider. A limit block is fixedly connected to the vertical rod, and the limit block extends through to the outside of the mounting groove and is inserted into a groove opened on the side of the drawer. A hollow cylinder is fixedly connected inside the mounting groove. A first piston rod is piston-type inserted into both ends of the hollow cylinder, and the first piston rod is fixedly connected to the vertical rod. A first piston plate is fixedly connected to the end of the first piston rod located inside the hollow cylinder. A second compression spring is fixedly connected between the first piston plate and the hollow cylinder.

9. A narcotic drug storage device according to claim 8, characterized in that: The control unit includes a receiving tank, which is located on the control cabinet. A sleeve is fixedly embedded at the front end of the receiving tank. A control rod is rotatably connected to the sleeve via a bearing. A cam is fixedly connected to one end of the control rod located in the receiving tank. The control cabinet also has multiple piston chambers, which are arranged in a ring around the outside of the receiving tank. A second piston rod is piston-type inserted into one end of each piston chamber. A second piston plate is fixedly connected to one end of the second piston rod located in the piston chamber. A tension spring is fixedly connected between the second piston plate and the piston chamber. An infusion tube is connected between the piston chamber and the hollow cylinder.

10. A storage device for narcotic drugs according to claim 9, characterized in that: The sleeve has scale lines on the front, a pointer is fixedly connected to the front end of the control lever, and a pawl-ratchet structure is provided between the control lever and the sleeve.

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