Book management lifting device

Abstract

The invention relates to the technical field of lifting equipment, in particular to a book management lifting device which comprises a trolley, a height adjusting assembly, a rotating balance mechanism and a book storage box, the height adjusting assembly is arranged on the trolley, the rotating balance mechanism is connected with the height adjusting assembly, and the book storage box is connected with the rotating balance mechanism. According to the book cabinet, the trolley, the height adjusting assembly, the rotating balance mechanism and the book storage box are arranged, when the book cabinet is used, a worker rotates the book storage box around the horizontal axis through the rotating balance mechanism till books on the side away from the book cabinet are close to the book cabinet, and then the worker can conveniently take out part of the books in the book storage box; the book storage box can stop when rotating to the preset position, so that the book storage box is kept horizontal compared with the book storage box, and a worker can take the books more conveniently and can take the needed books without bending down.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and in particular to a lifting device for book management. Background Art

[0002] The book management lifting device is an automated device specially designed for use inside libraries. It aims to help staff and readers more conveniently move books and other materials between different cabinet levels. This device can significantly improve the work efficiency of staff and reduce physical labor.

[0003] Most of the existing book management lifting devices are a kind of book management lifting device disclosed in the Chinese utility model patent with authorization announcement number CN213738434U, whose core structure includes a shell, a lifting structure and a book storage box, and the lifting structure is connected between the book storage box and the shell, and is used to drive the book storage box to move in the vertical direction through the lifting structure, so that the height of the book storage box is adapted to the standing position of the staff, so that the number of times the administrator bends down can be reduced, and the physical labor of the staff can be reduced. However, the existing book lifting device still has the following problems: since the books placed in the book storage box are usually three or more rows, it is more convenient for the staff to take the books in a row that is closer to them, but it is still inconvenient to take the books in a row that is farther away from them, and they still need to bend down to get close to the books they want to take in order to take the target books. Summary of the invention

[0004] Based on this, it is necessary to provide a book management lifting device to solve the problem that staff still need to bend down when taking a row of books far away from themselves, in view of the problems existing in the current book management lifting device.

[0005] The above purpose is achieved through the following technical solutions: A book management lifting device comprises: Car; A height adjustment component, the height adjustment component is arranged on the trolley; A rotating balancing mechanism connected to the height adjustment assembly; A book storage box, the book storage box is connected to the rotation balance mechanism; The rotation balancing mechanism is used to enable the book storage box to rotate around a horizontal axis and to stop the book storage box when it rotates to a preset position.

[0006] Further, the rotation balancing mechanism comprises a fixed bracket assembly, a rotating bracket assembly, a transmission wheel assembly and a balancing wheel assembly, the fixed bracket assembly is arranged on the trolley, the rotating bracket assembly is rotatably connected with the fixed bracket assembly around a horizontal axis, the rotating bracket assembly is fixedly connected with the lower surface of the book storage box, the transmission wheel assembly is transmission-matched between the fixed bracket assembly and the rotating bracket assembly, and the balancing wheel assembly is elastically matched with the transmission wheel assembly; When a worker pushes the book storage box to rotate around the horizontal axis, the transmission wheel assembly is forced to rotate and adaptively adjusts the torque provided by the elastic force between the balance wheel assembly and the transmission wheel assembly to balance the torque generated by the gravity of the book storage box and the books inside it, so that the book storage box stops when it rotates to a preset position.

[0007] Further, the fixed bracket assembly includes a bottom plate, a support plate, a first rod, a second rod, a third rod, a fourth rod, a first connecting plate and a second connecting plate, the support plates have two and are arranged on the upper surface of the bottom plate at intervals along the extension direction of the horizontal axis, the first rod and the second rod are coaxial, and the first rod and the second rod are respectively arranged on the sides of the two support plates facing each other, the third rod is located between the first rod and the second rod and above the first rod and the second rod, the axis of the third rod and the axis of the first rod and the second rod are located in the same vertical plane, the first rod and the third rod are fixedly connected by the first connecting plate, the second rod and the third rod are fixedly connected by the second connecting plate, and the fourth rod is arranged on a side of the second connecting plate away from the second rod; The rotating bracket assembly is rotatably arranged on the first shaft and the second shaft.

[0008] Furthermore, the rotating bracket assembly includes a rotating frame, a center frame, a first rotating ring and a second rotating ring. The rotating frame is U-shaped and has an opening facing downward. The first rotating ring and the second rotating ring are respectively arranged at two ends of the rotating frame. The first rotating ring is rotatably connected to the first rod, and the second rotating ring is rotatably connected to the second rod. The center frame is arranged in the middle position of the rotating frame and is fixedly connected to the lower surface of the book storage box.

[0009] In one embodiment, the transmission wheel assembly includes a first gear, a second gear, a first inner gear ring and a second inner gear ring, the first gear is coaxially fixedly connected to the second rotating ring, the second gear is rotatably connected to the outside of the fourth rod, the first gear is meshed with the second gear, the first inner gear ring is rotatably connected to the outside of the second rod, the first inner gear ring is meshed with the second gear, the second inner gear ring is rotatably connected to the outside of the first rod, and the first inner gear ring and the second inner gear ring can rotate synchronously around the horizontal axis; The diameter of the second gear is half of the diameter of the first gear, the diameter of the first inner gear ring is the same as the diameter of the second inner gear ring, and the diameter of the first inner gear ring is twice the diameter of the first gear.

[0010] Furthermore, the balance wheel assembly includes a third gear, a first cylinder and a first elastic member. The third gear is rotatably connected to the outside of the third rod. The third gear has the same diameter as the first gear. The cylinder body of the first cylinder is arranged on the outer peripheral surface of the third gear. The piston rod of the first cylinder and the second inner gear ring are fixedly connected by the first elastic member.

[0011] Furthermore, the rotation balancing mechanism also includes an elastic adjustment component, which is arranged between the third gear and the first cylinder. When the third gear rotates around the first rotation direction, the piston rod length of the first cylinder is extended to reduce the elastic deformation length of the first elastic member.

[0012] Furthermore, the elastic adjustment component includes a slider, a first one-way member, a toggle column, a traction rope and an elastic plug, there are a plurality of toggle columns, the plurality of toggle columns are circumferentially and evenly spaced on the end face of the third gear, the axis of the toggle column is parallel to the axis of the third gear, the slider is slidably arranged on the side of the first connecting plate close to the third gear, the slider can move in a vertical direction, the first one-way member is arranged on the slider, the first one-way member is configured to abut against the toggle column when the third gear rotates around a first rotation direction, and the first one-way member is further configured to disengage from the abutment with the toggle column when the third gear rotates around a second rotation direction; The elastic plug is arranged on the cylinder body of the first cylinder and is connected to the inside of the cylinder body of the first cylinder, and the traction rope is arranged between the elastic plug and the slider; When the first one-way piece is in one-way abutment with the toggle column, the toggle column drives the slider to move downward in the vertical direction through the first one-way piece, and then pulls the elastic plug to open through the traction rope, so that the gas inside the cylinder body of the first cylinder is released outward.

[0013] Further, the first one-way member includes a first rotating plate, a stop rod and a second elastic member, the upper portion of the first rotating plate is rotatably disposed on the slider, the stop rod is also disposed on the slider, and the lower portion of the first rotating plate is disposed on the slider via the second elastic member; When the third gear rotates around the first rotation direction, the toggle column pushes the first rotating plate to contact the stop rod, thereby driving the slider to move downward in the vertical direction, and then pulling the elastic plug open through the traction rope, so that the gas inside the cylinder body of the first cylinder is released outward; When the third gear rotates around the second rotation direction, the toggle post pushes the first rotating plate to rotate upward around its hinge point, so that the toggle post passes over the first rotating plate.

[0014] Furthermore, the height adjustment assembly includes a bidirectional screw, a guide rod, a threaded plate, a hinged plate and a sliding plate. The axis of the bidirectional screw is horizontal and the bidirectional screw can rotate around its axis. There are two threaded plates, which are threadedly connected to the two ends of the bidirectional screw. There are two guide rods, which are arranged on the inner side of the trolley and on both sides of the bidirectional screw, and both threaded plates pass through the guide rods. The hinged plates are divided into two groups, and the ends of the two groups of hinged plates that are away from each other are hinged to the threaded plates on the corresponding side, and the ends of the two groups of hinged plates that are close to each other are coaxially hinged to the lower part of the sliding plate, and the sliding plate is slidably connected to the inner circumferential wall of the trolley.

[0015] The beneficial effects of the present invention are: The present invention is provided with a trolley, a height adjustment component, a rotation balancing mechanism and a book storage box. When in use, the staff first adjusts the height of the book storage box through the height adjustment component so that the height of the book storage box is convenient for the staff to take out the books. When the books in the book storage box are not convenient for the staff to take out, the staff rotates the book storage box in the direction of the bookcase so that the side of the book storage box that was previously far away from the staff is tilted to be close to the staff. After the side of the book storage box that is far away from the staff is rotated to the point where it is convenient for the staff to take out the books, the rotation of the book storage box is stopped. At this time, under the action of the rotation balancing mechanism, the book storage box is balanced in force in the vertical direction, so the book storage box remains stationary in the current state, so that the staff can put the books in the book storage box that are far away from the bookcase back into the designated cabinet of the bookcase. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of a book management lifting device of the present invention; Figure 2 It is a side view of a book management lifting device of the present invention; Figure 3 for Figure 2 Middle AA half-section axonometric drawing; Figure 4 It is a structural schematic diagram of a rotation balance mechanism in a book management lifting device of the present invention; Figure 5 A cross-sectional view of a book management lifting device of the present invention; Figure 6 It is an exploded view of a rotation balance mechanism in a book management lifting device of the present invention; Figure 7 for Figure 6 A schematic diagram of the enlarged structure in the middle; Figure 8 for Figure 4 Side view of Fig. 9 for Figure 8 Middle BB section view; Fig.10 It is a partial structural cross-sectional view of a first cylinder in a book management lifting device of the present invention; Fig.11 for Fig. 9 Schematic diagram of the enlarged structure at C in the middle; Fig.12 for Fig. 9 Schematic diagram of the enlarged structure at D in the middle.

[0017] in: 100, trolley; 110, handle; 200, height adjustment assembly; 210, bidirectional screw; 220, guide rod; 230, threaded plate; 240, hinged plate; 250, sliding plate; 260, motor; 300, rotating balancing mechanism; 310, fixed bracket assembly; 320, rotating bracket assembly; 330, transmission wheel assembly; 340, balancing wheel assembly; 350, elastic adjustment assembly; 311, bottom plate; 312, support plate; 313, first rod; 314, second rod; 315, third rod; 316, fourth rod; 317, first connecting plate; 3171, vertical slide; 318, second connecting plate; 321, rotating frame; 322, center frame; 323, first rotating ring; 324, second rotating ring; 331, first gear; 332, second gear; 333, first inner gear ring; 334, second inner gear ring; 335, synchronization rod; 336, synchronization wheel; 341, third gear; 342, first cylinder; 343, first elastic member; 351, slider; 352, first one-way member; 353, toggle post; 354, traction rope; 355, elastic plug; 3521, a first rotating plate; 3522, a stop rod; 3523, a second elastic member; 3551, plug body; 3552, plug core; 3553, third elastic member; 3554, air leakage hole; 400. Book storage box. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] like Figure 1-Figure 12 As shown, a book management lifting device includes a trolley 100, a height adjustment component 200, a rotation balance mechanism 300 and a book storage box 400. The height adjustment component 200 is arranged on the trolley 100, the rotation balance mechanism 300 is connected to the height adjustment component 200, and the book storage box 400 is connected to the rotation balance mechanism 300. The rotation balance mechanism 300 is used to enable the book storage box 400 to rotate around a horizontal axis and stop the book storage box 400 when it rotates to a preset position.

[0022] When in use, the staff moves the trolley 100 to the side of the bookcase to be placed, and then adjusts the height of the book storage box 400 through the height adjustment component 200, so that the height of the book storage box 400 is convenient for the staff to take out the books. Next, the staff gradually takes out the books in the book storage box 400 from the side close to the bookcase to the side away from the bookcase. After the staff has taken out the books close to the side of the bookcase, they need to take out the books on the side away from the bookcase. At this time, if the books on the side away from the bookcase are not convenient for the staff to take, the staff rotates the balancing mechanism 300 to rotate the book storage box 400 around the horizontal axis until the books on the side away from the bookcase are close to the bookcase. Next, the staff can take out some of the books in the book storage box 400 more conveniently. Since the book storage box 400 can stop when it is rotated to a preset position, it is more convenient for the staff to take out the books compared to keeping the book storage box horizontal, and they can take the required books without bending over.

[0023] It should also be noted that if Figure 3 As shown, when the height of the book storage box 400 is adjusted by the height adjustment assembly 200 , the book storage box 400 has a minimum height limit, and the minimum height of the book storage box 400 should ensure that the trolley 100 does not interfere with the rotation of the book storage box 400 .

[0024] It should also be noted that if Figure 1 As shown, in order to facilitate the movement of the trolley 100, a handle 110 is provided on one side of the trolley 100. More preferably, the handle 110 can be provided on the trolley 100 and close to the side where the staff pushes the book storage box 400 to rotate.

[0025] In a further embodiment, Figure 3 and Figure 4 As shown, the rotating balancing mechanism 300 includes a fixed bracket assembly 310, a rotating bracket assembly 320, a transmission wheel assembly 330 and a balancing wheel assembly 340. The fixed bracket assembly 310 is arranged on the trolley 100. The rotating bracket assembly 320 is connected to the fixed bracket assembly 310 for rotation around a horizontal axis. The horizontal axis is a straight line where the hinge point of the rotating bracket assembly 320 and the fixed bracket assembly 310 is located. The rotating bracket assembly 320 is fixedly connected to the lower surface of the book storage box 400. The transmission wheel assembly 330 is transmission-matched between the fixed bracket assembly 310 and the rotating bracket assembly 320. The balancing wheel assembly 340 is elastically matched with the transmission wheel assembly 330. When the worker pushes the rotating book storage box 400 to rotate the rotating bracket assembly 320 relative to the fixed bracket assembly 310 around the horizontal axis, the transmission wheel assembly 330 is rotated by force, and the torque generated by the elastic force between the balancing wheel assembly 340 and the transmission wheel assembly 330 is adaptively adjusted to balance the torque generated by the sum of the gravity of the book storage box 400 and the books therein.

[0026] When the books in the book storage box 400 are inconvenient for the staff to take out, the staff rotates the book storage box 400 around the horizontal axis to a position where the staff can take out the books. In this process, the transmission wheel assembly 330 is forced to rotate, and the torque generated by the elastic force between the balancing wheel assembly 340 and the transmission wheel assembly 330 is adaptively adjusted to balance the torque generated by the sum of the gravity of the book storage box 400 and the books inside it, so that the book storage box 400 remains stopped. When the staff takes out some of the books in the book storage box 400, the torque generated by the sum of the gravity of the book storage box 400 and the books inside it changes. Next, the transmission wheel assembly 330 is forced to rotate in the opposite direction by a certain angle, and the torque generated by the elastic force between the balancing wheel assembly 340 and the transmission wheel assembly 330 is adaptively adjusted to balance the torque generated by the sum of the gravity of the book storage box 400 and the books inside it with the torque generated by the elastic force between the balancing wheel assembly 340 and the transmission wheel assembly 330 again. At this time, the book storage box 400 stops when it rotates to a preset position.

[0027] In a further embodiment, Figure 3-Figure 10 As shown, the fixing bracket assembly 310 includes a bottom plate 311, a support plate 312, a first rod 313, a second rod 314, a third rod 315, a fourth rod 316, a first connecting plate 317 and a second connecting plate 318. Two support plates 312 are arranged on the upper surface of the bottom plate 311 at intervals along the extension direction of the horizontal axis. The first rod 313 and the second rod 314 are coaxial, and the first rod 313 and the second rod 314 are respectively arranged on the sides of the two support plates 312 facing each other. Specifically, the horizontal axis is the first rod 313 and the fourth rod 316 are arranged on the first connecting plate 317 and the fourth connecting plate 318. and the axis of the second rod 314, the third rod 315 is located between the first rod 313 and the second rod 314 and above the first rod 313 and the second rod 314, the axis of the third rod 315 and the axes of the first rod 313 and the second rod 314 are located in the same vertical plane, the first rod 313 and the third rod 315 are fixedly connected by a first connecting plate 317, the second rod 314 and the third rod 315 are fixedly connected by a second connecting plate 318, and the fourth rod 316 is arranged on a side of the second connecting plate 318 away from the second rod 314.

[0028] The rotating bracket assembly 320 includes a rotating frame 321, a center frame 322, a first rotating ring 323 and a second rotating ring 324. The rotating frame 321 is U-shaped and has an opening facing downward. The first rotating ring 323 and the second rotating ring 324 are respectively arranged at two ends of the rotating frame 321. The first rotating ring 323 is rotatably connected to the first rod 313, and the second rotating ring 324 is rotatably connected to the second rod 314. The center frame 322 is arranged in the middle position of the rotating frame 321 and is fixedly connected to the lower surface of the book storage box 400.

[0029] The transmission wheel assembly 330 includes a first gear 331, a second gear 332, a first inner gear ring 333 and a second inner gear ring 334. The first gear 331 is coaxially fixedly connected to the second rotating ring 324, the second gear 332 is rotatably connected to the outside of the fourth rod 316, the first gear 331 is meshed with the second gear 332, the first inner gear ring 333 is rotatably connected to the outside of the second rod 314, the first inner gear ring 333 is meshed with the second gear 332, the second inner gear ring 334 is rotatably connected to the outside of the first rod 313, the first inner gear ring 333 and the second inner gear ring 334 can rotate synchronously around the horizontal axis, the diameter of the second gear 332 is half of the diameter of the first gear 331, the diameter of the first inner gear ring 333 and the diameter of the second inner gear ring 334 are the same, and the diameter of the first inner gear ring 333 is twice the diameter of the first gear 331.

[0030] The balancing wheel assembly 340 includes a third gear 341, a first cylinder 342 and a first elastic member 343. The diameter of the third gear 341 is the same as that of the first gear 331. The third gear 341 is rotatably connected to the outside of the third rod 315. The cylinder body of the first cylinder 342 is arranged on the outer circumference of the third gear 341. The piston rod of the first cylinder 342 and the inner circumference of the second inner gear ring 334 are fixedly connected by the first elastic member 343.

[0031] The gravity balance assembly further includes an elastic adjustment assembly 350, which is disposed between the third gear 341 and the first cylinder 342. When the third gear 341 rotates around the first rotation direction, the elastic adjustment assembly 350 extends the piston rod of the first cylinder 342, so that the elastic deformation length of the first elastic member 343 is reduced. The first elastic member 343 can be specifically any one of a tension spring and an elastic bar.

[0032] In the initial state, the book storage box 400 is in a horizontal state, and the extended length of the piston rod of the first cylinder 342 is in the shortest state. At this time, the staff puts the books to be put back in the book storage box 400 in order. After the books are placed, the staff moves the trolley 100 to the side of the bookcase to be placed, and then adjusts the height of the book storage box 400 through the height adjustment component 200, so that the height of the book storage box 400 is convenient for the staff to take the books. Next, the staff gradually takes the books in the book storage box 400 from the side close to the bookcase to the side away from the bookcase. After the staff has finished taking the books close to the bookcase, they need to take the books away from the bookcase. At this time, if the books away from the bookcase are not convenient for the staff to take the books, When the staff takes the book, the staff rotates the book storage box 400 to the side close to the bookcase. At this time, the book storage box 400 drives the central frame 322 and the rotating frame 321 to rotate synchronously, the rotating frame 321 drives the first gear 331 to rotate synchronously, the first gear 331 drives the second gear 332 to rotate, so that the second gear 332 rotates around the axis of the fourth rod 316, and the second gear 332 drives the first inner gear ring 333 to rotate. Since the first inner gear ring 333 rotates synchronously with the second inner gear ring 334, the second inner gear ring 334 is forced to rotate around the second rotation direction (the second rotation direction is opposite to the first rotation direction). Since the second inner gear ring 334 and the third gear 341 are internally meshed, the second inner gear ring 334 drives the third gear 341 to rotate around the second rotation direction. The first gear 341 rotates, and since the diameter of the second inner gear ring 334 is twice the diameter of the third gear 341, the rotation angle of the third gear 341 is greater than the rotation angle of the second inner gear ring 334, so the distance between the two points where the first elastic member 343 is connected with the third gear 341 and the second inner gear ring 334 increases, the first elastic member 343 is stretched, and the elastic deformation length of the first elastic member 343 gradually increases. After the staff pushes the book storage box 400 to a suitable angle, the staff stops pushing the book storage box 400 and takes out some of the books in the book storage box 400. At this time, the gravity balance of the "heavy object" constituted by the book storage box 400 and the books therein is broken, and the torque generated by the elastic force of the first elastic member 343 The torque generated by the elastic force of the first elastic member 343 is greater than the torque generated by the gravity of the heavy object, so the book storage box 400 is no longer balanced in the vertical direction, and the book storage box 400 rotates in the opposite direction (i.e., rotates around the first rotation direction) in order to reduce the torque generated by the elastic force of the first elastic member 343. At this time, the elastic adjustment component 350 is used to extend the piston rod length of the first cylinder 342 to reduce the elastic deformation length of the first elastic member 343, that is, the torque generated by the elastic force of the first elastic member 343 is reduced. When the torque generated by the elastic force of the first elastic member 343 is equal to the torque generated by the gravity of the heavy object again, the book storage box 400 and the books therein reach a balanced state in the vertical direction again, and the book storage box 400 stops rotating in the opposite direction and stays at the current position.The same process applies when the staff takes the books again, and the specific process will not be repeated here.

[0033] It is understandable that, compared with the ratchet structure, when the book storage box 400 rotates around the horizontal axis, the torque provided by the elastic force of the first elastic member 343 balances the torque generated by the weight of the weight, so that the influence of the weight of the weight on the rotation is offset, which greatly reduces the torque required to drive the book storage box 400 to rotate around the horizontal direction. Therefore, the staff has less resistance when pushing the book storage box 400 to rotate, which helps to reduce labor intensity. In addition, when the staff stands on the ladder to take books, the smaller rotation resistance of the book storage box 400 also helps to improve safety and prevent the staff from losing balance and falling from the ladder due to excessive force.

[0034] It should also be noted that, since the book storage box 400 will rotate in the opposite direction by a certain angle each time after taking out some books, it can prevent the book storage box 400 from maintaining a large degree of inclination for a long time, which would cause the books to slide too long along the surface of the book storage box, resulting in the height position of the books being too low, making it inconvenient for the staff to take the books.

[0035] It should also be noted that if Figure 5 As shown, in order to make the first inner gear ring 333 and the second inner gear ring 334 rotate synchronously, specifically, the outer sides of the first inner gear ring 333 and the second inner gear ring 334 are coaxially provided with synchronization wheels 336, and a synchronization rod 335 is provided between the two synchronization wheels 336 for connecting the two synchronization wheels 336 together. The synchronization rod 335 passes through the first inner gear ring 333 and the second inner gear ring 334, and the first inner gear ring 333 and the second inner gear ring 334 are fixedly connected to the synchronization rod 335. Specifically, the first inner gear ring 333 and the second inner gear ring 334 can be welded together with the synchronization rod 335 after the synchronization rod 335 passes through the first inner gear ring 333 and the second inner gear ring 334.

[0036] In a further embodiment, Fig.11As shown, the elastic adjustment component 350 includes a slider 351, a first one-way member 352, a toggle column 353, a traction rope 354 and an elastic plug 355. There are multiple toggle columns 353, and the multiple toggle columns 353 are circumferentially arranged on the end surface of the third gear 341 at equal intervals. The axis of the toggle column 353 is parallel to the axis of the third gear 341. The slider 351 is slidably arranged on the side of the first connecting plate 317 close to the third gear 341, and the slider 351 can move in the vertical direction. Specifically, a vertical slide groove 3171 is opened on the side of the first connecting plate 317 close to the third gear 341, and the vertical slide groove 3171 extends in the vertical direction. The slider 351 is slidably connected in the vertical slide groove 3171, the first one-way member 352 is arranged on the slider 351, and the first one-way member 352 is arranged on the slider 351. The one-way piece 352 is configured such that when the third gear 341 rotates around the first rotation direction, the first one-way piece 352 abuts and cooperates with the toggle column 353. The first one-way piece 352 is also configured such that when the third gear 341 rotates around the second rotation direction, the first one-way piece 352 and the toggle column 353 are disengaged from the abutment. The elastic plug 355 is arranged on the cylinder body of the first cylinder 342 and is connected to the interior of the cylinder body of the first cylinder 342. The traction rope 354 is arranged between the elastic plug 355 and the slider 351. When the first one-way piece 352 abuts and cooperates with the toggle column 353, the toggle column 353 drives the slider 351 to move downward in the vertical direction through the first one-way piece 352, and then pulls the elastic plug 355 to open through the traction rope 354, so that the gas inside the cylinder body of the first cylinder 342 is released outward.

[0037] When the staff pushes the book storage box 400 to rotate, the third gear 341 rotates around the second rotation direction (in Fig.11 As shown in the figure, the third gear 341 rotates counterclockwise), at this time, the first one-way member 352 and the toggle post 353 are out of contact, and the first one-way member 352 does not interfere with the movement of the toggle post 353. When the staff pushes the book storage box 400 to rotate to a preset angle position and takes out one or more books from the book storage box 400, the book storage box 400 rotates in the opposite direction because the force is no longer balanced. At this time, the third gear 341 rotates around the first rotation direction (to Fig.11As shown in the figure, the third gear 341 rotates clockwise), at this time, the first one-way member 352 is in abutment with the toggle column 353, and at this time, the toggle column 353 drives the slider 351 to move downward in the vertical direction through the first one-way member 352, and then pulls the elastic plug 355 to open through the traction rope 354, so that the gas inside the cylinder body of the first cylinder 342 is released outward. At this time, the deformation length of the first elastic member 343 is gradually reduced, and the torque provided by the elastic force of the first elastic member 343 is reduced. With the continuous rotation of the third gear 341, the toggle column 353 intermittently abuts against the first rotating plate 3521, and the gas inside the cylinder body of the first cylinder 342 is intermittently released outward. After the torque provided by the elastic force is equal to the torque generated by the gravity of the heavy object again, the book storage box 400 and the books inside it reach a state of equilibrium in the vertical direction again. At this time, the book storage box 400 stops rotating in the opposite direction, so the third gear 341 no longer rotates, and the toggle column 353 no longer drives the slider 351 to move downward in the vertical direction through the first one-way member 352, so the elastic plug 355 is reset under the action of its own elastic force, and the gas inside the cylinder body of the first cylinder 342 is no longer released outward, and the first elastic member 343 maintains the current elastic deformation. At this time, the torque generated by the elastic force of the first elastic member 343 is balanced with the torque generated by the gravity of the heavy object, and the book storage box 400 stops at the preset position.

[0038] It should also be noted that if Fig.12 As shown, the elastic plug 355 includes a plug body 3551, a plug core 3552 and a third elastic member 3553. The plug body 3551 is arranged outside the cylinder body of the first cylinder 342 and is connected to the inside of the air cavity of the first cylinder 342. An air leakage hole 3554 is opened on the peripheral wall of the plug body 3551. The plug core 3552 is slidably connected in the plug body 3551. The upper part of the plug body 3551 is fixedly connected to the traction rope 354. The lower part of the plug body 3551 and the plug core 3552 are connected by the third elastic member 3553. When the third elastic member 3553 is not compressed, the air leakage hole 3554 is blocked by the plug core 3552.

[0039] When the third gear 341 rotates in the opposite direction, the toggle column 353 provides the first one-way member 352 to push the slider 351 to move downward in the vertical direction. The slider 351 drives the plug core 3552 to move upward through the traction rope 354, so that the third elastic member 3553 is compressed. At this time, the plug core 3552 no longer blocks the air leakage hole 3554, so that the interior of the cylinder body of the first cylinder 342 is connected to the air leakage hole 3554, and the gas inside the cylinder body of the first cylinder 342 is discharged outward, so that the length of the piston rod of the first cylinder 342 extending outward is reduced.

[0040] When the book storage box 400 stops rotating in the opposite direction, the third gear 341 no longer rotates. At this time, the toggle column 353 no longer drives the slider 351 to move downward in the vertical direction through the first one-way member 352. Therefore, under the elastic force of the third elastic member 3553, the plug core 3552 moves downward to block the air leakage hole 3554. At this time, the gas inside the cylinder body of the first cylinder 342 is no longer released outward, and the first elastic member 343 maintains the current elastic deformation. At this time, the torque generated by the elastic force of the first elastic member 343 is balanced with the torque generated by the gravity of the heavy object, and the book storage box 400 is maintained at the current angular position to facilitate the staff to take the books in the book storage box 400.

[0041] In a further embodiment, Fig.11 As shown, the first one-way member 352 includes a first rotating plate 3521, a stop rod 3522 and a second elastic member 3523. The upper part of the first rotating plate 3521 is rotatably set on the slider 351, and the stop rod 3522 is also set on the slider 351. The lower part of the first rotating plate 3521 is set on the slider 351 through the second elastic member 3523. When the third gear 341 rotates around the first rotation direction, the toggle column 353 pushes the first rotating plate 3521 to abut against the stop rod 3522, thereby driving the slider 351 to move downward in the vertical direction, and then the elastic plug 355 is pulled open by the traction rope 354, so that the gas inside the cylinder body of the first cylinder 342 is released outwardly. When the third gear 341 rotates around the second rotation direction, the toggle column 353 pushes the first rotating plate 3521 to rotate upward around its hinge point, so that the toggle column 353 passes over the first rotating plate 3521.

[0042] When the staff pushes the book storage box 400 to rotate, the third gear 341 is forced to rotate counterclockwise. When the driving column 353 on the third gear 341 abuts against the first rotating plate 3521, the first rotating plate 3521 rotates around its hinge point and compresses the second elastic member 3523, so that the driving column 353 passes over the first rotating plate 3521, so that the third gear 341 continues to rotate counterclockwise.

[0043] When the staff takes out some books from the book storage box 400 and stops pushing the book storage box 400 to rotate, the torque provided by the elastic force of the first elastic member 343 is greater than the torque generated by the gravity of the heavy object. Therefore, under the action of the torque provided by the elastic force of the first elastic member 343, the third gear 341 rotates clockwise in the opposite direction. When the third gear 341 rotates until the toggle column 353 abuts against the first rotating plate 3521 and the first rotating plate 3521 abuts against the stop rod 3522, the toggle column 353 pushes the slider 351 to move vertically downward until the toggle column 353 passes over the first rotating plate 3521. Then, under the action of the elastic force of the third elastic member 3553, the slider 351 quickly returns to its initial position upward.

[0044] In a further embodiment, Figure 2 As shown, the height adjustment assembly 200 includes a bidirectional screw 210, a guide rod 220, a threaded plate 230, a hinge plate 240 and a sliding plate 250. The axis of the bidirectional screw 210 is horizontal, and the bidirectional screw 210 can rotate around its axis. Specifically, a motor 260 is arranged in the trolley 100, and the output end of the motor 260 is fixedly connected to the bidirectional screw 210, so that the bidirectional screw 210 is driven by the motor 260 to rotate around its axis. There are two threaded plates 230, and the two threaded plates 230 have threads. Connected to the two ends of the bidirectional screw 210, there are two guide rods 220, the two guide rods 220 are arranged on the inner side of the trolley 100 and on both sides of the bidirectional screw 210, and the two threaded plates 230 pass through the guide rods 220, and the hinged plates 240 are divided into two groups, and the ends of the two groups of hinged plates 240 that are away from each other are hinged on the threaded plates 230 on the corresponding side, and the ends of the two groups of hinged plates 240 that are close to each other are coaxially hinged on the lower part of the sliding plate 250, and the sliding plate 250 is slidably connected to the inner peripheral wall of the trolley 100.

[0045] When the height of the rotating balancing mechanism 300 needs to be raised, the motor 260 is started, and the motor 260 drives the bidirectional screw 210 to rotate. The two threaded plates 230 are brought closer to each other through the rotation of the bidirectional screw 210. At this time, the angle between the two hinged plates 240 is reduced, and the vertical height of the sliding plate 250 is increased. The rotating balancing mechanism 300 is arranged on the sliding plate 250, so the height of the rotating balancing mechanism 300 is increased, and the height of the book storage box 400 is increased.

[0046] When the height of the rotating balancing mechanism 300 needs to be lowered, the motor 260 is started, and the motor 260 drives the bidirectional screw 210 to rotate in the opposite direction. The two threaded plates 230 are moved away from each other through the reverse rotation of the bidirectional screw 210. At this time, the angle between the two hinged plates 240 is reduced, and the vertical height of the sliding plate 250 is reduced. The rotating balancing mechanism 300 is arranged on the sliding plate 250, so the height of the rotating balancing mechanism 300 is reduced, and the height of the book storage box 400 is reduced.

[0047] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A book management lifting device, characterized in that: include: Car; A height adjustment component, the height adjustment component is arranged on the trolley; A rotating balancing mechanism connected to the height adjustment assembly; A book storage box, the book storage box is connected to the rotation balance mechanism; The rotation balancing mechanism is used to enable the book storage box to rotate around a horizontal axis and to stop the book storage box when it rotates to a preset position.

2. A book management lifting device according to claim 1, characterized in that: The rotating balancing mechanism comprises a fixed bracket assembly, a rotating bracket assembly, a transmission wheel assembly and a balancing wheel assembly, wherein the fixed bracket assembly is arranged on the trolley, the rotating bracket assembly is rotatably connected with the fixed bracket assembly around a horizontal axis, the rotating bracket assembly is fixedly connected with the lower surface of the book storage box, the transmission wheel assembly is transmission-matched between the fixed bracket assembly and the rotating bracket assembly, and the balancing wheel assembly is elastically matched with the transmission wheel assembly; When a worker pushes the book storage box to rotate around the horizontal axis, the transmission wheel assembly is forced to rotate and adaptively adjusts the torque provided by the elastic force between the balance wheel assembly and the transmission wheel assembly to balance the torque generated by the gravity of the book storage box and the books inside it, so that the book storage box stops when it rotates to a preset position.

3. A book management lifting device according to claim 2, characterized in that: The fixed bracket assembly comprises a bottom plate, a support plate, a first rod, a second rod, a third rod, a fourth rod, a first connecting plate and a second connecting plate, wherein there are two support plates and they are arranged on the upper surface of the bottom plate at intervals along the extension direction of the horizontal axis, the first rod and the second rod are coaxial, and the first rod and the second rod are respectively arranged on the sides of the two support plates facing each other, the third rod is located between the first rod and the second rod and above the first rod and the second rod, the axis of the third rod and the axis of the first rod and the second rod are located in the same vertical plane, the first rod and the third rod are fixedly connected by the first connecting plate, the second rod and the third rod are fixedly connected by the second connecting plate, and the fourth rod is arranged on a side of the second connecting plate away from the second rod; The rotating bracket assembly is rotatably arranged on the first shaft and the second shaft.

4. A book management lifting device according to claim 3, characterized in that: The rotating bracket assembly includes a rotating frame, a center frame, a first rotating ring and a second rotating ring. The rotating frame is U-shaped and has an opening facing downward. The first rotating ring and the second rotating ring are respectively arranged at two ends of the rotating frame. The first rotating ring is rotatably connected to the first rod, and the second rotating ring is rotatably connected to the second rod. The center frame is arranged in the middle position of the rotating frame and is fixedly connected to the lower surface of the book storage box.

5. A book management lifting device according to claim 4, characterized in that: The transmission wheel assembly includes a first gear, a second gear, a first inner gear ring and a second inner gear ring, the first gear is coaxially fixedly connected with the second rotating ring, the second gear is rotatably connected to the outside of the fourth rod, the first gear is meshed with the second gear, the first inner gear ring is rotatably connected to the outside of the second rod, the first inner gear ring is meshed with the second gear, the second inner gear ring is rotatably connected to the outside of the first rod, and the first inner gear ring and the second inner gear ring can rotate synchronously around the horizontal axis; The diameter of the second gear is half of the diameter of the first gear, the diameter of the first inner gear ring is the same as the diameter of the second inner gear ring, and the diameter of the first inner gear ring is twice the diameter of the first gear.

6. A book management lifting device according to claim 5, characterized in that: The balance wheel assembly includes a third gear, a first cylinder and a first elastic member. The third gear is rotatably connected to the outside of the third rod. The third gear has the same diameter as the first gear. The cylinder body of the first cylinder is arranged on the outer circumferential surface of the third gear. The piston rod of the first cylinder is fixedly connected to the second inner gear ring via the first elastic member.

7. A book management lifting device according to claim 6, characterized in that: The rotation balancing mechanism also includes an elastic adjustment component, which is arranged between the third gear and the first cylinder. When the third gear rotates around the first rotation direction, the piston rod of the first cylinder is extended to reduce the elastic deformation length of the first elastic member.

8. A book management lifting device according to claim 7, characterized in that: The elastic adjustment component includes a slider, a first one-way member, a toggle column, a traction rope and an elastic plug. There are multiple toggle columns, which are circumferentially and evenly spaced on the end surface of the third gear. The axis of the toggle column is parallel to the axis of the third gear. The slider is slidably arranged on the side of the first connecting plate close to the third gear. The slider can move in a vertical direction. The first one-way member is arranged on the slider. The first one-way member is configured to abut against the toggle column when the third gear rotates around a first rotation direction. The first one-way member is also configured to disengage from the abutment with the toggle column when the third gear rotates around a second rotation direction. The elastic plug is arranged on the cylinder body of the first cylinder and is connected to the inside of the cylinder body of the first cylinder, and the traction rope is arranged between the elastic plug and the slider; When the first one-way piece is in one-way abutment with the toggle column, the toggle column drives the slider to move downward in the vertical direction through the first one-way piece, and then pulls the elastic plug to open through the traction rope, so that the gas inside the cylinder body of the first cylinder is released outward.

9. A book management lifting device according to claim 8, characterized in that: The first one-way member comprises a first rotating plate, a stop rod and a second elastic member, the upper portion of the first rotating plate is rotatably arranged on the slider, the stop rod is also arranged on the slider, and the lower portion of the first rotating plate is arranged on the slider via the second elastic member; When the third gear rotates around the first rotation direction, the toggle column pushes the first rotating plate to contact the stop rod, thereby driving the slider to move downward in the vertical direction, and then pulling the elastic plug open through the traction rope, so that the gas inside the cylinder body of the first cylinder is released outward; When the third gear rotates around the second rotation direction, the toggle post pushes the first rotating plate to rotate upward around its hinge point, so that the toggle post passes over the first rotating plate.

10. A book management lifting device according to claim 1, characterized in that: The height adjustment assembly includes a bidirectional screw, a guide rod, a threaded plate, a hinged plate and a sliding plate. The axis of the bidirectional screw is horizontal and the bidirectional screw can rotate around its axis. There are two threaded plates, which are threadedly connected to the two ends of the bidirectional screw. There are two guide rods, which are arranged on the inner side of the trolley and on both sides of the bidirectional screw, and the two threaded plates pass through the guide rods. The hinged plates are divided into two groups, and the ends of the two groups of hinged plates that are away from each other are hinged to the threaded plates on the corresponding side, and the ends of the two groups of hinged plates that are close to each other are coaxially hinged to the lower part of the sliding plate, and the sliding plate is slidably connected to the inner circumferential wall of the trolley.

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