A hanging conveyor system for pharmaceutical production

Abstract

The application relates to the technical field of medicine production conveying equipment, in particular to a suspension conveying system for medicine production, which comprises a suspension wheel frame installed on a conveying track, the bottom of the suspension wheel frame is fixedly connected with a connecting shaft, the bottom end of the connecting shaft is fixedly provided with an upper L-shaped tooth plate, and the left and right sides of the upper L-shaped tooth plate are slidably sleeved with sliding frames. The suspension conveying system for medicine production is characterized in that a gear transmission pair composed of the upper L-shaped tooth plate, a driving gear and a lower L-shaped tooth plate is used to convert the gravity of the medicine carried by the clamping jaw into the downward displacement of the sliding frame relative to the upper L-shaped tooth plate, so as to drive the throttle valve core to synchronously move downward and reduce the effective flow cross section of the hydraulic channel; the greater the load weight of the medicine is, the smaller the opening of the hydraulic channel is, and the greater the hydraulic oil flow resistance is; the buffer damping matched with the load can be automatically matched; the smoothness of light load operation and the yaw suppression capacity of heavy load working conditions are considered; and the conveying demand of medicines with different weights and different specifications can be met.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical production conveying equipment technology, specifically a suspended conveying system for pharmaceutical production. Background Technology

[0002] Overhead conveyor systems are commonly used equipment in pharmaceutical production workshops for material transfer across workstations. By suspending the lifting equipment on an overhead track, continuous transport of medicine bottles, medicine boxes, and turnover containers can be achieved without occupying ground working space, thus adapting to the layout requirements of clean pharmaceutical production workshops.

[0003] Currently, conventional pharmaceutical production overhead conveyor systems mostly employ rigid suspension structures or ordinary spring buffer structures, which have significant limitations in actual production operation: First, when the system passes through curved sections of the track, the lifting device and the loaded pharmaceuticals are prone to lateral swaying due to centrifugal force. The swaying amplitude increases with the operating speed and load weight, which may cause pharmaceutical containers to shake and collide, affecting the integrity of pharmaceutical packaging and the safety of transportation. It may also lead to excessive positioning deviation of the lifting device when it reaches the process station, making it impossible to accurately connect with the production equipment. Second, the damping parameters of existing buffer structures are mostly fixed values, which cannot adaptively adjust the buffering capacity according to the actual weight of the transported pharmaceuticals. Excessive damping under light load conditions can easily cause running jerks, while insufficient damping under heavy load conditions results in poor sway suppression, making it difficult to meet the transportation needs of pharmaceuticals of various specifications and weights. Third, existing structures cannot provide differentiated responses to small disturbances on straight tracks and large centrifugal swaying on curves, making it difficult to enhance the sway suppression capability on curves while ensuring the smoothness of straight track operation, thus restricting the simultaneous improvement of transportation efficiency and operational stability. Summary of the Invention

[0004] The purpose of this invention is to provide a suspended conveying system for pharmaceutical production, thereby solving the problems mentioned in the background section. To achieve the above objective, this invention provides the following technical solution: a suspended conveying system for pharmaceutical production, comprising a suspended wheel frame installed on a conveying track, a connecting shaft fixedly connected to the bottom of the suspended wheel frame, and an upper L-shaped toothed plate fixed to the bottom end of the connecting shaft;

[0005] The upper L-shaped toothed plate is slidably fitted with sliding frames on both sides, and a return spring telescopic rod is connected between the sliding frames and the upper L-shaped toothed plate; a connecting plate is fixed between the two sliding frames, and a drive gear is rotatably connected to the connecting plate. The drive gear meshes with both the upper L-shaped toothed plate and the lower L-shaped toothed plate at the same time, and the lower L-shaped toothed plate is slidably set between the two sliding frames.

[0006] The lower ends of the two sliding frames are fixed with a hydraulic cylinder. A hydraulic channel is opened at the top of the hydraulic cylinder, and the hydraulic channel is connected to a storage tank.

[0007] A valve core guide sleeve is fixed to the top wall of the hydraulic cylinder. A throttling valve core is slidably arranged inside the valve core guide sleeve. A spring telescopic rod is arranged between the throttling valve core and the valve core guide sleeve.

[0008] A lower pressure plug is fixed at the upper end of the throttle valve core, and the lower pressure plug slides in the through groove opened in the lower L-shaped toothed plate;

[0009] An inner pressure plug is slidably installed on the inner wall of the hydraulic cylinder, and an inner pressure cylinder is slidably assembled inside the inner pressure plug. A roller is rotatably connected to the outer wall of the inner pressure cylinder, and the roller is in rolling cooperation with the guide extrusion groove opened on the inner wall of the inner pressure plug. A conical groove is opened at the lower end of the inner pressure cylinder, and a strip-shaped retaining strip is provided on the groove wall of the conical groove.

[0010] A sealing plate is fixed to the bottom of the inner pressure plug, and a spring telescopic rod is installed between the sealing plate and the inner pressure cylinder.

[0011] A second universal ball joint is movably embedded inside the sealing plate. The upper end of the second universal ball joint is fixed with a compression ball head with a ball protrusion, which abuts against the strip-shaped locking strip for transmission. The lower end of the second universal ball joint is connected to a gripper for holding medicine.

[0012] Preferably, the upper L-shaped toothed plate and the lower L-shaped toothed plate are arranged opposite each other, and the two are arranged in a rectangular frame shape and slide together with the two sliding frames to form a guide and limiting structure for sliding up and down;

[0013] The upper end of the return spring telescopic rod is fixedly connected to the opposite side wall of the slide frame, and the lower end is fixedly connected to the surface of the upper L-shaped toothed plate.

[0014] Preferably, a disc is fixedly connected to the upper part of the inner wall of the through groove, and a first universal ball rod is embedded in the center of the disc;

[0015] The lower end of the first universal cue is fixedly connected to the lower ball head, and the upper end is fixedly connected to the upper ball body.

[0016] Preferably, the top surface of the lower pressure plug has a semi-elliptical inner cavity, and the spherical surface of the lower ball head abuts against the inner wall of the semi-elliptical inner cavity.

[0017] Preferably, the guide extrusion groove is formed by mirror-connected two arc-shaped grooves, and the initial position of the roller corresponds to the middle of the guide extrusion groove.

[0018] Preferably, an annular groove is provided on the upper part of the outer wall of the inner pressure cylinder, and the roller is rotatably installed inside the annular groove.

[0019] Preferably, the suspension wheel frame has a U-shaped frame structure, and a drive wheel for driving is installed on the suspension wheel frame; the lower end of the throttle valve core extends into the hydraulic channel.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention features load-adaptive damping adjustment, suitable for conveying various specifications of medicines. Through a gear transmission pair consisting of an upper L-shaped toothed plate, a drive gear, and a lower L-shaped toothed plate, the invention converts the weight of the medicine-bearing jaws into a downward displacement of the sliding frame relative to the upper L-shaped toothed plate. This, in turn, drives the throttle valve core downwards synchronously, reducing the effective flow cross-section of the hydraulic channel. The greater the weight of the medicine load, the smaller the opening of the hydraulic channel and the greater the hydraulic oil flow resistance. The invention automatically matches the buffer damping to the load, balancing smooth operation under light loads with sway suppression under heavy loads, thus adapting to the conveying needs of medicines of different weights and specifications.

[0022] This invention features a dual-stage damping enhancement mechanism for curves, effectively suppressing centrifugal sway. When the system operates in the curve section of the track, a dual-stage damping enhancement mechanism is formed, with upper and lower components working in tandem. In the upper structure, the upper ball deflects due to the centrifugal force of the curve, and the pressure plug is further moved downward by the first universal joint and the lower ball head, further reducing the flow area of ​​the hydraulic channel and increasing the damping of the main oil circuit. In the lower structure, the gripper and the loaded medicine are simultaneously deflected by the centrifugal force, and the pressure ball head and ball protrusion are driven to rotate by the second universal joint, driving the inner pressure cylinder to rotate circumferentially. Then, through the curved surface cooperation of the roller and the guide pressure groove, the rotational motion is converted into the axial pressure force of the inner pressure plug, actively increasing the flow damping of the hydraulic oil in the oil pressure cylinder. The upper and lower structures respond synchronously to the centrifugal force of the curve, and the damping force dynamically increases with the centrifugal intensity, which can effectively reduce the lateral sway amplitude of the lifting device and medicine at the curve, ensure the docking accuracy of the work station, and prevent the medicine from colliding and spilling due to shaking.

[0023] This invention features a micro-disturbance buffer on straight sections to improve operational stability. When the track is running on a straight section, the small deflection of the gripper caused by factors such as airflow and track joints can be transmitted to the inner pressure cylinder through the second universal ball joint. This causes the inner pressure cylinder and inner pressure plug to move slightly upward along the axial direction of the hydraulic cylinder, allowing the hydraulic oil in the hydraulic cylinder to flow into the storage tank through the hydraulic channel. The flow resistance of the hydraulic oil dissipates the deflection energy, buffering the small swaying during straight track operation and improving the overall stability of drug delivery. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the sliding frame and the lower L-shaped toothed plate of the present invention in a separated state;

[0026] Figure 3 This is a three-dimensional cross-sectional view of the hydraulic cylinder of the present invention;

[0027] Figure 4 This is a three-dimensional cross-sectional view of the L-shaped toothed plate and the lower pressure plug of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the hydraulic cylinder of the present invention;

[0029] Figure 6 This is a three-dimensional structural diagram of the present invention with the conical groove and the extruded ball head separated.

[0030] Figure 7 This is a three-dimensional cross-sectional view of the internal pressure plug of the present invention;

[0031] Figure 8 This is a three-dimensional structural diagram of the conical groove and strip-shaped clip of the present invention.

[0032] In the diagram: 1. Suspension wheel frame, 2. Connecting shaft, 3. Upper L-shaped toothed plate, 4. Slide frame, 41. Return spring telescopic rod, 5. Connecting plate, 6. Drive gear, 7. Lower L-shaped toothed plate, 71. Through groove, 8. Hydraulic cylinder, 81. Hydraulic channel, 82. Storage tank, 83. Valve core guide sleeve, 84. Throttling valve core, 85. Lower pressure plug, 86. Semi-elliptical inner cavity, 87. Disc, 88. First universal ball joint, 89. Lower ball head, 810. Upper ball, 811. Spring telescopic rod one, 9. Inner pressure plug, 91. Guide extrusion groove, 92. Inner pressure cylinder, 93. Annular groove, 94. Roller, 95. Conical groove, 96. Strip-shaped clamp, 97. Sealing plate, 98. Second universal ball joint, 99. Extrusion ball head, 910. Ball protrusion, 911. Spring telescopic rod two, 10. Gripper. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 8 The present invention provides a technical solution: a suspended conveying system for pharmaceutical production, including a suspended wheel frame 1, the suspended wheel frame 1 being installed on a conveying track, a connecting shaft 2 being installed at the bottom of the suspended wheel frame 1, an upper L-shaped toothed plate 3 being fixedly connected to the bottom end of the connecting shaft 2, and sliding frames 4 being slidably sleeved on both sides of the upper L-shaped toothed plate 3, and a return spring telescopic rod 41 being fixedly connected to the opposite sides of the two sliding frames 4, the lower end of the return spring telescopic rod 41 being fixed on the upper L-shaped toothed plate 3;

[0035] A connecting plate 5 is fixedly connected to the two sliding frames 4 on opposite sides. A drive gear 6 is rotatably connected to the connecting plate 5. The drive gear 6 meshes with the upper L-shaped toothed plate 3, and a lower L-shaped toothed plate 7 also meshes with the drive gear 6. The lower L-shaped toothed plate 7 is slidably disposed in the two sliding frames 4. The lower L-shaped toothed plate 7 and the upper L-shaped toothed plate 3 are arranged in a rectangular frame shape in the sliding frames 4 to ensure that the upper L-shaped toothed plate 3 and the lower L-shaped toothed plate 7 can slide stably up and down in the two sliding frames 4. A through groove 71 is provided on the horizontal plate of the lower L-shaped toothed plate 7.

[0036] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the lower ends of the two sliding frames 4 are fixedly connected to hydraulic cylinders 8. The openings of the hydraulic cylinders 8 face downwards. A hydraulic channel 81 is provided on the top of the inner wall of the hydraulic cylinder 8. One end of the hydraulic channel 81 is fixedly connected to a storage tank 82.

[0037] A valve core guide sleeve 83 is fixedly connected to the top center of the hydraulic cylinder 8. A throttling valve core 84 is slidably disposed inside the valve core guide sleeve 83. A spring telescopic rod 811 is fixedly connected between the upper end face of the valve core guide sleeve 83 and the outer wall of the throttling valve core 84. This rod is used to pull the throttling valve core 84 downward and then move it upward and reset it inside the valve core guide sleeve 83. The lower end of the throttling valve core 84 extends into the hydraulic channel 81. A lower pressure plug 85 is fixedly connected to the upper end of the throttling valve core 84. The lower pressure plug 85 is slidably disposed in the through groove 71 and a semi-elliptical inner cavity 86 is opened on the top surface of the lower pressure plug 85.

[0038] A disc 87 is fixedly connected to the upper part of the inner wall of the through groove 71. A first universal ball joint 88 is movably embedded in the disc 87. A lower ball head 89 is fixedly connected to the lower end of the first universal ball joint 88. The lower ball head 89 abuts against the semi-elliptical inner cavity 86, ensuring that the first universal ball joint 88 and the lower ball head 89 deflect and squeeze the semi-elliptical inner cavity 86 at the same time, driving the lower pressure plug 85 to move down. An upper ball 810 is fixedly connected to the upper end of the first universal ball joint 88. The centrifugal force received by the suspension wheel frame 1 during the movement is transmitted to the semi-elliptical inner cavity 86 of the lower pressure plug 85 through the upper ball 810.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, an inner pressure plug 9 is slidably provided on the inner wall of the hydraulic cylinder 8. A guide extrusion groove 91 is provided on the inner wall of the inner pressure plug 9. The guide extrusion groove 91 is composed of two arc-shaped grooves connected in a mirror image.

[0040] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, an inner pressure cylinder 92 is slidably disposed inside the inner pressure plug 9. An annular groove 93 is formed on the upper part of the outer wall of the inner pressure cylinder 92. A roller 94 is rotatably connected inside the annular groove 93, and the other end of the roller 94 is rolled and disposed in the middle of the corresponding guide extrusion groove 91. A conical groove 95 is formed at the lower end of the inner pressure cylinder 92, and a strip-shaped retaining strip 96 is formed inside the conical groove 95. When the roller 94 rolls in the guide extrusion groove 91, it can continue to extrude the inner pressure plug 9 upward.

[0041] A sealing plate 97 is fixedly connected to the bottom of the inner pressure plug 9. A spring telescopic rod 911 is fixedly connected to the top surface of the sealing plate 97. The upper end of the spring telescopic rod 911 is fixed to the lower end face of the inner pressure cylinder 92. A second universal ball joint 98 is movably embedded in the sealing plate 97. A compression ball head 99 is fixedly connected to the upper end of the second universal ball joint 98. A ball protrusion 910 is fixedly connected to the outer wall of the compression ball head 99, and the compression ball head 99 abuts against the strip-shaped clamping strip 96 through the ball protrusion 910. The end of the strip-shaped clamping strip 96 is chamfered. When the medicine held by the gripper 10 is subjected to centrifugal force, the compression ball head 99 drives the ball protrusion 910 to rotate inside the inner pressure cylinder 92, thus pushing the inner pressure cylinder 92 to rotate.

[0042] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the lower end of the second universal ball joint 98 is connected to a gripper 10.

[0043] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the suspension wheel frame 1 is U-shaped, and a drive wheel is mounted on the suspension wheel frame 1.

[0044] The method of use and advantages of this invention: The working process of this suspended conveying system for pharmaceutical production is as follows:

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8As shown, when transporting medicine, the gripper 10 clamps the medicine to be transported. After the medicine is fixed on the gripper 10, the medicine exerts a downward force on the gripper 10. The hydraulic cylinder 8, the slide frame 4 and the connecting plate 5 work together to pull the drive gear 6 to roll on the teeth of the upper L-shaped toothed plate 3, thereby driving the lower L-shaped toothed plate 7 to move down between the two slide frames 4. When the lower L-shaped toothed plate 7 moves down, it pushes the throttle valve core 84 to move down in the valve core guide sleeve 83, reducing the flow cross section of the hydraulic channel 81. This achieves the purpose of adjusting the flow cross section of the hydraulic channel 81 according to the weight of the medicine, and increases the flow resistance of the hydraulic oil in the hydraulic channel 81. When the slide frame 4 moves down, the return spring telescopic rod 41 is contracted by the downward force of the slide frame 4, which facilitates the subsequent release of the medicine by the gripper 10 and the subsequent upward movement and reset of the slide frame 4.

[0046] Then, when the suspension wheel frame 1 moves in the straight section of the conveying track, the gripper 10 and the medicine it holds deflect slightly, causing the second universal ball joint 98 to drive the extrusion ball head 99 and ball protrusion 910 to deflect, extruding the conical groove 95 at the lower end of the inner pressure cylinder 92, causing the inner pressure cylinder 92 and the inner pressure plug 9 to move upward in the hydraulic cylinder 8 at the same time, and transporting the oil in the hydraulic cylinder 8 to the storage tank 82 through the hydraulic channel 81. The flow resistance of the hydraulic oil buffers the deflection force experienced by the suspension wheel frame 1 when it moves in the straight section of the conveying track.

[0047] When the suspension wheel frame 1 moves to the curve area, the upper ball 810 is deflected by centrifugal force, which in turn drives the lower ball head 89 to squeeze the lower pressure plug 85 to move down in the through groove 71, causing the flow cross-sectional area of ​​hydraulic oil in the hydraulic channel 81 to be further reduced.

[0048] At the same time, the centrifugal force on the gripper 10 and the medicine on it increases synchronously, causing the medicine to drive the second universal ball rod 98 to rotate in an arc within the sealing plate 97. This causes the ball protrusion 910 to rotate around the ball in the middle of the second universal ball rod 98, which in turn, in conjunction with the strip-shaped clamping strip 96, drives the inner pressure cylinder 92 to rotate within the inner pressure plug 9. As the inner pressure plug 9 rotates, the roller 94 on its annular groove 93 rolls within the guide extrusion groove 91, further extruding the inner pressure plug 9 and causing it to move within the hydraulic cylinder 8. This extrudes the hydraulic oil and causes it to flow within the hydraulic channel 81. At this point, the centrifugal deflection force on the medicine is further restricted when it passes through the curved area.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A suspended conveying system for pharmaceutical production, comprising a suspended wheel frame (1) installed on a conveying track, a connecting shaft (2) fixedly connected to the bottom of the suspended wheel frame (1), and an upper L-shaped toothed plate (3) fixed to the bottom end of the connecting shaft (2). Its features are: The upper L-shaped toothed plate (3) is slidably fitted with sliding frames (4) on both sides. A return spring telescopic rod (41) is connected between the sliding frames (4) and the upper L-shaped toothed plate (3). A connecting plate (5) is fixed between the two sliding frames (4). A drive gear (6) is rotatably connected to the connecting plate (5). The drive gear (6) meshes with the upper L-shaped toothed plate (3) and the lower L-shaped toothed plate (7) at the same time. The lower L-shaped toothed plate (7) is slidably set between the two sliding frames (4). The lower ends of the two sliding frames (4) are fixed with a hydraulic cylinder (8), and a hydraulic channel (81) is opened at the top of the hydraulic cylinder (8), which is connected to a storage tank (82). A valve core guide sleeve (83) is fixed on the inner top wall of the hydraulic cylinder (8), and a throttle valve core (84) is slidably arranged inside the valve core guide sleeve (83). A spring telescopic rod (811) is arranged between the throttle valve core (84) and the valve core guide sleeve (83). The upper end of the throttle valve core (84) is fixed with a lower pressure plug (85), which slides in the through groove (71) opened in the lower L-shaped toothed plate (7); An inner pressure plug (9) is slidably provided on the inner wall of the hydraulic cylinder (8), and an inner pressure cylinder (92) is slidably assembled inside the inner pressure plug (9). A roller (94) is rotatably connected to the outer wall of the inner pressure cylinder (92), and the roller (94) is in rolling cooperation with the guide extrusion groove (91) opened on the inner wall of the inner pressure plug (9). A conical groove (95) is opened at the lower end of the inner pressure cylinder (92), and a strip-shaped retaining strip (96) is provided on the groove wall of the conical groove (95). A sealing plate (97) is fixed at the bottom of the inner pressure plug (9), and a spring telescopic rod (911) is provided between the sealing plate (97) and the inner pressure cylinder (92). The sealing plate (97) is movably embedded with a second universal ball rod (98). The upper end of the second universal ball rod (98) is fixed with a compression ball head (99) with a ball protrusion (910). The ball protrusion (910) and the strip-shaped clamp (96) are in contact and driven. The lower end of the second universal ball rod (98) is connected to a gripper (10) for holding medicine.

2. The suspended conveying system for pharmaceutical production according to claim 1, characterized in that: The upper L-shaped toothed plate (3) and the lower L-shaped toothed plate (7) are arranged opposite each other, and the two are arranged in a rectangular frame shape and slide together with the two sliding frames (4) to form a guide and limiting structure for sliding up and down; The upper end of the reset spring telescopic rod (41) is fixedly connected to the opposite side wall of the slide frame (4), and the lower end is fixedly connected to the surface of the upper L-shaped toothed plate (3).

3. The suspended conveying system for pharmaceutical production according to claim 2, characterized in that: A disc (87) is fixedly connected to the upper part of the inner wall of the through groove (71), and a first universal ball rod (88) is embedded in the center of the disc (87). The lower end of the first universal ball handle (88) is fixedly connected to the lower ball head (89), and the upper end is fixedly connected to the upper ball body (810).

4. A suspended conveyor system for pharmaceutical production according to claim 3, characterized in that: The top surface of the lower pressure plug (85) has a semi-elliptical inner cavity (86), and the spherical surface of the lower ball head (89) abuts against the inner wall of the semi-elliptical inner cavity (86).

5. A suspended conveyor system for pharmaceutical production according to claim 4, characterized in that: The guide extrusion groove (91) is composed of two arc-shaped grooves mirrored together, and the initial position of the roller (94) corresponds to the middle of the guide extrusion groove (91).

6. A suspended conveyor system for pharmaceutical production according to claim 5, characterized in that: An annular groove (93) is provided on the upper part of the outer wall of the inner pressure cylinder (92), and the roller (94) is rotatably installed inside the annular groove (93).

7. A suspended conveyor system for pharmaceutical production according to claim 6, characterized in that: The suspension wheel frame (1) is a U-shaped frame structure, and the suspension wheel frame (1) is equipped with a drive wheel for driving. The lower end of the throttle valve core (84) extends into the hydraulic channel (81).

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