Scientific and technological work competition showcase

Abstract

The utility model relates to a scientific and technological work competition showcase, belongs to the technical field of showcases, and aims to solve the problems that the flexibility of an observation area of an existing showcase is limited, and an observer cannot accurately and comprehensively observe all details of scientific and technological works only through the observation area on the showcase. The cabinet further comprises a detail display unit, a detail collection unit, a lifting unit and a rotating unit, the detail display unit is located on the front side of the counter and fixedly connected with the counter, the detail collection unit is arranged in the glass cover, and the top of the detail collection unit is installed at the bottom of the cabinet top; a signal transmission end of the detail acquisition unit is connected with an image input end of the detail display unit through a wireless module, the lifting unit is mounted in the counter, a passing hole is formed in the top of the counter, the counter is communicated with an enclosed area of the glass cover through the passing hole, and the rotating unit is mounted on a lifting part of the lifting unit. The showcase mainly serves as a showcase used during competition or exhibition of scientific and technological works.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the showcase technical field, concretely relates to a science and technology work competition showcase. BACKGROUND

[0002] The showcase is the bearing structure and protection structure of the exhibits in the exhibition process, and the viewers can appreciate the exhibits through the observation area on the showcase. With the continuous progress of the science and technology level in recent years, science and technology exhibitions and science and technology work competitions are also held continuously in various places. The latest science and technology works exhibited on the exhibition or the competition can be observed and learned by scholars in various technical fields. However, some science and technology works have exquisite structure and unique appearance, and the viewers cannot accurately and comprehensively observe all the details of the science and technology works through the observation area on the showcase. In particular, in the science and technology work competition process, the negligence of some details will directly affect the evaluation of the works by the judges and the subsequent development of the works. Therefore, in order to overcome the disadvantages of the existing showcases, it is very practical to develop a showcase that can observe the science and technology works in detail. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a science and technology work competition showcase to solve the problem that the observation area flexibility of the existing showcase is limited, and the viewers cannot accurately and comprehensively observe all the details of the science and technology works through the observation area on the showcase.

[0004] A science and technology work competition showcase, the showcase includes a cabinet top, a glass cover and a counter, the cabinet top is arranged directly above the counter, the glass cover is arranged between the cabinet top and the counter, the top of the glass cover is embedded in the cabinet top and detachably connected with the cabinet top, the bottom of the glass cover is embedded in the counter and detachably connected with the counter, the showcase further includes a detail display unit, a detail collection unit, a lifting unit and a rotating unit, the detail display unit is located at the front side of the counter and fixedly connected with the counter, the detail collection unit is arranged in the glass cover, the top of the detail collection unit is installed at the bottom of the cabinet top, the detail collection unit transmits image information to the detail display unit through a wireless module, the lifting unit is installed in the counter, the top of the counter is processed with a through hole, the counter is communicated with the enclosing area of the glass cover through the through hole, the rotating unit is installed on the lifting part of the lifting unit, and the lifting unit drives the rotating unit to reciprocate up and down.

[0005] Further, the back side plate body of the counter is a detachable movable plate.

[0006] Further, the detail collecting unit comprises a mounting seat, a first rotating motor, a first coupling, a first arm body, a first swing motor, a second arm body, a second swing motor, a third arm body, a third swing motor, an electric push rod, a fourth arm body, a fourth swing motor, a camera mounting seat and a camera, the mounting seat is installed at the bottom of the cabinet top, the first coupling is installed in the mounting seat, the first rotating motor and the first arm body are oppositely arranged at the two sides of the first coupling, and the power output shaft of the first rotating motor is connected with one end of the first arm body through the first coupling, the shell of the first rotating motor is fixedly connected with the mounting seat, one end of the second arm body is hinged with the other end of the first arm body, the first swing motor is installed at the hinge between the first arm body and the second arm body, and the first swing motor drives the second arm body to swing relative to the first arm body, one end of the third arm body is hinged with the other end of the second arm body, the second swing motor is installed at the hinge between the second arm body and the third arm body, and the second swing motor drives the third arm body to swing relative to the second arm body, the closed end of the electric push rod is hinged with the other end of the third arm body, the third swing motor is installed at the hinge between the third arm body and the electric push rod, and the third swing motor drives the electric push rod to swing relative to the third arm body, one end of the fourth swing arm body is fixedly connected with the piston rod end of the electric push rod, the other end of the fourth arm body is hinged with the fixed end of the camera mounting seat, the fourth swing motor is installed at the hinge between the fourth arm body and the camera mounting seat, and the fourth swing motor drives the camera mounting seat to swing relative to the fourth arm body, the camera is installed in the camera mounting seat, the shooting end of the camera faces the display work, and the camera transmits image information to the detail display unit through a wireless module;

[0007] Further, the lifting unit comprises two drive assemblies and a lifting bracket, the two drive assemblies are arranged in parallel and opposite to each other in the vertical direction in the counter, and the top of each drive assembly is detachably connected with the inner top of the counter, the bottom of each drive assembly is detachably connected with the inner bottom of the counter, and the lifting bracket is arranged between the two drive assemblies, and each end of the lifting bracket is fixedly connected with the lifting part of the corresponding drive assembly.

[0008] Further, the driving assembly comprises a lead screw, a second rotating motor, a second coupling, a top connecting seat and a motor fixing seat, the motor fixing seat is detachably connected with the inner bottom of the counter, the shell of the second rotating motor is installed in the motor fixing seat, and the power output shaft of the second rotating motor is vertically upwardly arranged, the top connecting seat is detachably connected with the inner top of the counter, and the top connecting seat is arranged in correspondence with the motor fixing seat in the up-down direction, the lead screw is arranged between the top connecting seat and the motor fixing seat in the vertical direction, the top end of the lead screw is inserted into the top connecting seat and is rotatably connected with the top connecting seat through a bearing, the top end of the lead screw is connected with the power output shaft of the second rotating motor through the second coupling, a nut is sleeved on the lead screw, the lifting bracket is provided with connecting arms on both sides, and each connecting arm is arranged in correspondence with one driving assembly, one end of each connecting arm is fixedly connected with the lifting bracket, and the other end of each connecting arm is fixedly connected with the nut sleeved on the corresponding lead screw;

[0009] Further, the inner bottom of the counter is provided with a power module, the power input end of the power module is connected with the power socket in the exhibition hall through an external plug, and the power output end of the power module is connected with the power input end of each second rotating motor and the power input end of the detail display unit through wires;

[0010] Further, the rotating unit comprises a bottom mounting plate, an outer sleeve, a cover plate, an upper support plate, a rotating shaft, a connecting sleeve, an exhibit supporting plate, a third rotating motor, a third coupling, a middle support plate, a first bearing pressing plate and a second bearing pressing plate, the outer sleeve is arranged on the top of the bottom mounting plate and is detachably connected with the bottom mounting plate through bolts, the cover plate is arranged on the top of the outer sleeve and is detachably connected with the outer sleeve through bolts, an annular protrusion is arranged on the inner wall of the outer sleeve, the middle support plate is arranged on the annular protrusion and is detachably connected with the annular protrusion through bolts, the upper support plate is arranged on the outer top of the cover plate and is detachably connected with the cover plate through bolts, the third rotating motor is fixed on the top center of the bottom mounting plate through a motor mounting seat, and the power output shaft of the third rotating motor is vertically upwardly arranged, the bottom end of the rotating shaft passes through the upper support plate, the cover plate and the middle support plate in sequence and is connected with the power output shaft of the third rotating motor through the third coupling, the top end of the rotating shaft extends above the upper support plate, the connecting sleeve is sleeved on the top end of the rotating shaft and is keyed connected with the rotating shaft, the exhibit supporting plate is arranged on the top end of the connecting sleeve and is detachably connected with the connecting sleeve through bolts, the rotating shaft and the middle support plate are rotatably connected through a first bearing, the first bearing is limited by the middle support plate through a first bearing pressing plate, and the first bearing pressing plate is detachably connected with the middle support plate through bolts, the rotating shaft and the upper support plate are rotatably connected through a second bearing, the second bearing is limited by the upper support plate through a second bearing pressing plate, and the second bearing pressing plate is detachably connected with the upper support plate through bolts;

[0011] Further, the showcase further comprises a first limiting assembly, the first limiting assembly is arranged between the lifting bracket and the power module, the first limiting assembly comprises a first limiting switch and a first limiting contact, the first limiting contact is fixed to the outer bottom of the lifting bracket, the first limiting switch is fixed to the top of the power module, and the first limiting switch and the first limiting contact are arranged oppositely in the up-down direction, and the first limiting switch is connected in series with the power supply circuit of the two second rotating motors;

[0012] Further, the showcase further comprises two second limiting assemblies, each second limiting assembly is arranged between a top connecting seat and a connecting arm, the second limiting assembly comprises a second limiting contact and a second limiting switch, the second limiting contact is fixed to the top of the corresponding connecting arm, the second limiting switch is fixed to the bottom of the corresponding top connecting seat, and the second limiting switch and the second limiting contact are arranged oppositely in the up-down direction, and the second limiting switch is connected in series with the power supply circuit of the two second rotating motors;

[0013] Further, the detail display unit comprises a controller, a computer and a display screen, the power input end of the display screen, the power input end of the controller and the power input end of the computer are connected with the power output end of the power module through wires, the data input end of the display screen is connected with the data output end of the computer through wires, the camera transmits image information to the computer through a wireless module, the signal output end of the controller is connected with the signal input end of the computer through wires, and the signal output end of the computer is connected with the signal input end of each rotating motor and each swinging motor through a wireless module.

[0014] The beneficial effects of the present application relative to the prior art are as follows:

[0015] 1、The scientific and technological work competition showcase provided by the present application increases a detail collecting unit and a detail display unit compared with a traditional showcase, the camera carried by the multi-joint mechanical arm arranged in the showcase can collect multi-angle detail images of the overall appearance of the exhibit, for the scientific and technological exhibit with exquisite structure, the person who observes or judges can shoot the detail area that the person who observes or judges wants to understand on the appearance of the exhibit through the camera, and transmit the collected images to the detail display unit through a wireless module, and then present the enlarged images on the display, so as to meet the needs of the person who observes or judges for detail consideration to the greatest extent, and help the person who observes or judges to understand the exhibited work in all directions, so as to accurately judge the value and scientific and technological content of the exhibit;

[0016] 2. The scientific work competition showcase provided by the application, in order to cooperate with the working flexibility of the detail collection unit, a rotating unit and a lifting unit are additionally arranged in the showcase, the detail collection unit is arranged in the initial state and is folded on the inner top of the cabinet top, which can save the exhibition space, the exhibits are arranged on the top of the rotating unit, and in the initial state, the rotating unit and the exhibits are lifted from the inside of the cabinet to the glass cover by the lifting unit for exhibition, the initial folding state of the detail collection unit can also effectively avoid the collision between the exhibits and the detail collection unit and the damage to the exhibits, and the rotating unit can also provide the exhibits with the circumferential freedom to cooperate with the detail collection unit to realize the omnibearing collection of the details of the exhibits. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The front view schematic diagram of the showcase provided by the application;

[0018] Figure 2 The front view schematic diagram of the showcase provided by the application;

[0019] Figure 3 The state schematic diagram of the showcase provided by the application when carrying the exhibits;

[0020] Figure 4 The working state schematic diagram of the showcase provided by the application;

[0021] Figure 5 The working schematic diagram of the detail collection unit in the showcase provided by the application;

[0022] Figure 6 The appearance schematic diagram of the rotating unit in the showcase provided by the application;

[0023] Figure 7 The main section schematic diagram of the rotating unit in the showcase provided by the application;

[0024] Figure 8 The structure schematic diagram of the lifting unit in the showcase provided by the application;

[0025] Figure 9 The structure schematic diagram of the detail collection unit in the showcase provided by the application.

[0026] 1 cabinet top, 2 glass cover, 3 counter, 4 detail display unit, 5 detail collection unit, 51 mounting seat, 52 No. 1 rotating motor, 53 No. 1 coupling, 54 No. 1 arm body, 55 No. 1 swing motor, 56 No. 2 arm body, 57 No. 2 swing motor, 58 No. 3 arm body, 59 No. 3 swing motor, 510 electric push rod, 511 No. 4 arm body, 512 No. 4 swing motor, 513 camera mounting seat, 514 camera, 6 lifting unit, 61 lead screw, 62 No. 2 rotating motor, 63 No. 2 coupling, 64 top connecting seat, 65 motor fixing seat, 66 lifting bracket, 7 rotating unit, 71 bottom mounting plate, 72 outer sleeve, 73 cover plate, 74 upper support plate, 75 rotating shaft, 76 connecting sleeve, 77 exhibit supporting plate, 771 clamping jaw, 78 No. 3 rotating motor, 79 No. 3 coupling, 710 middle support plate, 711 No. 1 bearing pressing plate, 712 No. 2 bearing pressing plate, 8 power module, 9 No. 1 limit switch, 10 No. 1 limit contact, 11 No. 2 limit contact and 12 No. 2 limit switch. DETAILED DESCRIPTION

[0027] DETAILED DESCRIPTION Figures 1 to 9 In this embodiment, a science and technology work competition display cabinet is provided. The display cabinet comprises a cabinet top 1, a glass cover 2 and a counter 3. The cabinet top 1 is arranged directly above the counter 3. The glass cover 2 is arranged between the cabinet top 1 and the counter 3. The top of the glass cover 2 is embedded in the cabinet top 1 and detachably connected with the cabinet top 1. The bottom of the glass cover 2 is embedded in the counter 3 and detachably connected with the counter 3. The display cabinet further comprises a detail display unit 4, a detail collection unit 5, a lifting unit 6 and a rotating unit 7. The detail display unit 4 is located at the front side of the counter 3 and fixedly connected with the counter 3. The detail collection unit 5 is arranged in the glass cover 2. The top of the detail collection unit 5 is mounted on the bottom of the cabinet top 1. The detail collection unit 5 transmits image information to the detail display unit 4 through a wireless module. The lifting unit 6 is installed in the counter 3. The top of the counter 3 is processed with a through hole. The counter 3 is arranged in communication with the enclosing area of the glass cover 2 through the through hole. The rotating unit 7 is installed on the lifting part of the lifting unit 6. The lifting unit 6 drives the rotating unit 7 to reciprocate up and down.

[0028] The science and technology work competition display cabinet provided in this embodiment can enlarge and display the detailed part of the exhibit, which is beneficial to help the observers and judges to fully understand the exhibit. Meanwhile, the lifting unit and the rotating unit are additionally arranged on the display cabinet, which can effectively increase the flexibility of collecting the details of the exhibit, so as to achieve the purpose of fully collecting the details of the exhibit.

[0029] DETAILED DESCRIPTION Figures 1 to 9This embodiment differs from Specific Embodiment 1 in that the back panel of counter 3 is a detachable movable panel. Other components and connection methods are the same as in Specific Embodiment 1.

[0030] In this embodiment, the detachable movable panel on the back side of the counter 3 is used for placing and taking out exhibits. At the same time, the internal structure of the counter can be inspected through the notch created by removing the movable panel.

[0031] Specific implementation method three: Combining Figures 1 to 9 This embodiment differs from Specific Embodiment Two in that the detailed acquisition unit 5 includes a mounting base 51, a first rotary motor 52, a first coupling 53, a first arm 54, a first swing motor 55, a second arm 56, a second swing motor 57, a third arm 58, a third swing motor 59, an electric push rod 510, a fourth arm 511, a fourth swing motor 512, a camera mounting base 513, and a camera 514. The mounting base 51 is installed at the bottom of the cabinet top 1, and the first coupling 53 is installed on the mounting base. In section 51, the first rotating motor 52 and the first arm body 54 are arranged opposite each other on both sides of the first coupling 53, and the power output shaft of the first rotating motor 52 is connected to one end of the first arm body 54 through the first coupling 53. The housing of the first rotating motor 52 is fixedly connected to the mounting base 51. One end of the second arm body 56 is hinged to the other end of the first arm body 54. The first swing motor 55 is installed at the hinge point between the first arm body 54 and the second arm body 56, and the first swing motor 55 drives the second arm body 56 to swing relative to the first arm body 54. The third arm body... One end of arm 58 is hinged to the other end of arm 56. A second swing motor 57 is installed at the hinge between arm 56 and arm 58, and drives arm 58 to swing relative to arm 56. The closed end of electric push rod 510 is hinged to the other end of arm 58. A third swing motor 59 is installed at the hinge between arm 58 and electric push rod 510, and drives electric push rod 510 to swing relative to arm 58. One end of arm 511 is connected to the electric push rod... The piston rod end of rod 510 is fixedly connected, and the other end of the fourth arm 511 is hinged to the fixed end of the camera mounting base 513. The fourth swing motor 512 is installed at the hinge between the fourth arm 511 and the camera mounting base 513, and the fourth swing motor 512 drives the camera mounting base 513 to swing relative to the fourth arm 511. The camera 514 is installed in the camera mounting base 513, and the shooting end of the camera 514 is set facing the displayed artwork 13. The camera 514 transmits image information to the detail display unit 4 through a wireless module. Other components and connection methods are the same as in specific embodiment two.

[0032] In this embodiment, the detail collection unit 5 includes two parts, the first part is a multi-joint mechanical arm, and the second part is an industrial camera, wherein the multi-joint mechanical arm is internally provided with an electric push rod, which can be used to increase the collection range of the industrial camera, the multi-joint mechanical arm has high working flexibility, and the end thereof can drive the industrial camera to move to an optimal collection position to meet the collection of exhibits with different structures and sizes. The industrial camera adopts XK-1080 WiFi type industrial camera produced by KSJLENS brand. In actual use, the power supply is integrated on the top of the cabinet, and the motor and camera included in the detail collection unit 5 are powered through wires.

[0033] Specific embodiment four: combination Figures 1 to 9 In this embodiment, the difference between this embodiment and specific embodiment three is that the lifting unit 6 includes two driving assemblies and a lifting bracket 66, the two driving assemblies are arranged in parallel and opposite to each other in the vertical direction in the counter 3, and the top of each driving assembly is detachably connected with the inner top of the counter 3, and the bottom of each driving assembly is detachably connected with the inner bottom of the counter 3, the lifting bracket 66 is arranged between the two driving assemblies, and each end of the lifting bracket 66 is fixedly connected with the lifting part of the corresponding driving assembly. The other components and connection modes are the same as those of specific embodiment three.

[0034] Specific embodiment five: combination Figures 1 to 9 In this embodiment, the difference between this embodiment and specific embodiment four is that the driving assembly includes a lead screw 61, a second rotating motor 62, a second coupling 63, a top connecting seat 64, and a motor fixing seat 65, the motor fixing seat 65 is detachably connected with the inner bottom of the counter 3, the shell of the second rotating motor 62 is mounted in the motor fixing seat 65, and the power output shaft of the second rotating motor 62 is vertically upwardly arranged, the top connecting seat 64 is detachably connected with the inner top of the counter 3, and the top connecting seat 64 and the motor fixing seat 65 are arranged in corresponding upper and lower positions, the lead screw 61 is arranged in the vertical direction between the top connecting seat 64 and the motor fixing seat 65, the top end of the lead screw 61 is inserted into the top connecting seat 64 and is rotatably connected with the top connecting seat 64 through a bearing, the top end of the lead screw 61 is connected with the power output shaft of the second rotating motor 62 through the second coupling 63, a nut is sleeved on the lead screw 61, the lifting bracket 66 is provided with a connecting arm on each side, each connecting arm is arranged in corresponding to one driving assembly, one end of each connecting arm is fixedly connected with the lifting bracket 66, and the other end of each connecting arm is fixedly connected with the nut sleeved on the corresponding lead screw 61. The other components and connection modes are the same as those of specific embodiment four.

[0035] Specific embodiment six: combination Figures 1 to 9The difference between the embodiment and the fifth embodiment is that the inner bottom of the counter 3 is provided with a power module 8, the power input end of the power module 8 is connected with a power socket in the exhibition hall through an external plug, and the power output end of the power module 8 is connected with the power input end of each second rotating motor 62 and the power input end of the detail display unit 4 through wires. The other components and connection modes are the same as those in the fifth embodiment.

[0036] In combination with the fourth embodiment to the sixth embodiment, the lifting unit 6 is driven by a screw-nut slider structure. If it is for large exhibits, a hydraulic jack can be used as the lifting unit. However, it is worth noting that the stroke of the hydraulic jack is limited and is not suitable for high exhibits. The power module 8 is used to supply power to the rotating motors in the display cabinet.

[0037] The seventh embodiment is in combination with the first embodiment to the sixth embodiment. Figures 1 to 9The difference between the embodiment and the sixth specific embodiment is that the rotating unit 7 comprises a bottom mounting plate 71, an outer sleeve 72, a cover plate 73, an upper support plate 74, a rotating shaft 75, a connecting sleeve 76, an exhibit supporting plate 77, a third rotating motor 78, a third coupling 79, a middle support plate 710, a first bearing pressing plate 711 and a second bearing pressing plate 712. The outer sleeve 72 is arranged on the top of the bottom mounting plate 71 and is detachably connected to the bottom mounting plate 71 by bolts. The cover plate 73 is arranged on the top of the outer sleeve 72 and is detachably connected to the outer sleeve 72 by bolts. An annular protrusion is arranged on the inner wall of the outer sleeve 72. The middle support plate 710 is arranged on the annular protrusion and is detachably connected to the annular protrusion by bolts. The upper support plate 74 is arranged on the outer top of the cover plate 73 and is detachably connected to the cover plate 73 by bolts. The third rotating motor 78 is fixed on the top center of the bottom mounting plate 71 by a motor mounting seat. The power output shaft of the third rotating motor 78 is arranged vertically upward. The bottom end of the rotating shaft 75 passes through the upper support plate 74, the cover plate 73 and the middle support plate 710 in sequence and is connected to the power output shaft of the third rotating motor 78 by the third coupling 79. The top end of the rotating shaft 75 extends above the upper support plate 74. The connecting sleeve 76 is sleeved on the top end of the rotating shaft 75 and is keyed connected to the rotating shaft 75. The exhibit supporting plate 77 is arranged on the top end of the connecting sleeve 76 and is detachably connected to the connecting sleeve 76 by bolts. The rotating shaft 75 is rotatably connected to the middle support plate 710 by a first bearing. The first bearing is limited by the first bearing pressing plate 711 and is detachably connected to the middle support plate 710 by bolts. The rotating shaft 75 is rotatably connected to the upper support plate 74 by a second bearing. The second bearing is limited by the second bearing pressing plate 712 and is detachably connected to the upper support plate 74 by bolts. The other components and connection modes are the same as those in the sixth specific embodiment.

[0038] In the embodiment, the rotating unit 7 is mainly used for bearing the exhibits and rotating the exhibits in the circumferential direction to cooperate with the detail collecting unit 5 to perform the detail collecting work. In order to ensure the stability of the exhibits during bearing, the fixed clamping jaw 771 is arranged on the exhibit supporting plate 77 and is detachably connected to the exhibit supporting plate 77. The detachable connection mode can be fixed by bolts or magnetic adsorption. The fixed clamping jaw 771 is mainly used for limiting the exhibits in the circumferential direction. The third rotating motor 78 is a low-speed rotating motor to rotate the exhibit supporting plate 77 at a low speed. The rotating unit 7 is embedded in the lifting bracket 66. In order to ensure the arrangement reliability of the rotating unit 7, the fastening bolts can be arranged on the outer wall of the lifting bracket 66 to clamp and fix the outer sleeve 72.

[0039] Specific embodiment eight: combined with the first specific embodiment Figures 1 to 9The difference between the embodiment and the seventh embodiment is that the showcase further comprises a first limiting assembly arranged between the lifting bracket 66 and the power module 8, the first limiting assembly comprises a first limiting switch 9 and a first limiting contact 10, the first limiting contact 10 is fixed to the outer bottom of the lifting bracket 66, the first limiting switch 9 is fixed to the top of the power module 8, the first limiting switch 9 and the first limiting contact 10 are arranged oppositely in the up-down direction, and the first limiting switch 9 is connected in series with the power supply circuit of the two second rotating motors 62. The other components and connection modes are the same as those in the seventh embodiment.

[0040] The ninth embodiment is combined with the eighth embodiment. Figures 1 to 9 The difference between the embodiment and the eighth embodiment is that the showcase further comprises two second limiting assemblies, each of the second limiting assemblies is arranged between a top connecting seat 64 and a connecting arm, each of the second limiting assemblies comprises a second limiting contact 11 and a second limiting switch 12, the second limiting contact 11 is fixed to the top of the corresponding connecting arm, the second limiting switch 12 is fixed to the bottom of the corresponding top connecting seat 64, the second limiting switch 12 and the second limiting contact 11 are arranged oppositely in the up-down direction, and the second limiting switch 12 is connected in series with the power supply circuit of the two second rotating motors 62. The other components and connection modes are the same as those in the eighth embodiment.

[0041] In combination with the eighth embodiment and the ninth embodiment, the first limiting assembly and the second limiting assembly are used to improve the safety of the lifting assembly during work, so as to avoid the collision between the lifting bracket 66 and other parts in the counter 3 when the lifting bracket 66 is lifted or lowered by a large distance, thereby preventing the damage of the original parts.

[0042] The tenth embodiment is combined with the ninth embodiment. Figures 1 to 9 The difference between the embodiment and the ninth embodiment is that the detail display unit 4 comprises a controller, a computer and a display screen, the power input end of the display screen, the power input end of the controller and the power input end of the computer are connected with the power output end of the power module 8 through wires, the data input end of the display screen is connected with the data output end of the computer through wires, the camera 514 transmits image information to the computer through a wireless module, the signal output end of the controller is connected with the signal input end of the computer through wires, and the signal output end of the computer is connected with the signal input end of each rotating motor and each swing motor through a wireless module. The other components and connection modes are the same as those in the eighth embodiment.

[0043] The detail display unit 4 in the embodiment is mainly used for receiving the image information transmitted by the camera 514 and enlarging and displaying the image information on the display screen, the controller is used for controlling the working state of each motor in the showcase, so that the observers and judges can adjust the working position of the camera 514 and the display height of the exhibits according to needs, the computer is used for receiving the image information transmitted by the camera 514, simultaneously processing the image by using image processing software, and projecting the processed image on the display screen, the controller is an OHR-PR10 type PLC controller produced by Hongrun brand, and the display is an EP type display produced by Suofude brand.

[0044] The above-mentioned embodiments of the utility model have been disclosed as preferred examples, however, are not used to limit the utility model, any skilled person in the art can make slight changes or modifications to the above-mentioned disclosed structure and technical content to obtain equivalent embodiments without departing from the technical scheme range of the utility model, however, any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the utility model are still within the technical scheme range of the utility model.

[0045] Working principle:

[0046] Before use, the components are assembled according to the connecting relationship described in the first to tenth specific embodiments, first, the exhibits are fixed on the exhibit supporting plate 77 through the fixed clamping jaw 771 by opening the movable plate at the back side of the counter 3, meanwhile, the second rotating motor 62 in the lifting unit 6 is driven to work by the controller, so that the lifting unit 6 drives the rotating unit 7 to ascend and transports the exhibits into the glass cover for exhibition, during the exhibition of the exhibits, the staff can make the camera 514 close to the details of the exhibits by controlling the detail collecting unit 5 and collect the image of the details of the exhibits, the collected image data is displayed on the display screen after being processed by the computer, so that the understanding of the works by the observers and judges can be improved, the flexibility and accuracy of the detail collection can be improved by the cooperation of the detail collecting unit 5 and the rotating unit 6, and the observers and judges can accurately check all the details they want to know.

Claims

1. A showcase for a science and technology works competition, the showcase comprising a top (1), a glass cover (2) and a counter (3), the top (1) being arranged directly above the counter (3), the glass cover (2) being arranged between the top (1) and the counter (3), the top of the glass cover (2) being embedded in the top (1) and detachably connected with the top (1), the bottom of the glass cover (2) being embedded in the counter (3) and detachably connected with the counter (3), characterized in that: The showcase further comprises a detail display unit (4), a detail collection unit (5), a lifting unit (6) and a rotating unit (7), the detail display unit (4) is located at the front side of the counter (3) and fixedly connected with the counter (3), the detail collection unit (5) is arranged in the glass cover (2), and the top of the detail collection unit (5) is mounted on the bottom of the cabinet top (1); the detail collection unit (5) transmits image information to the detail display unit (4) through a wireless module; the lifting unit (6) is mounted in the counter (3), and the top of the counter (3) is processed with a through hole; the counter (3) is in communication with the enclosing area of the glass cover (2) through the through hole; and the rotating unit (7) is mounted on the lifting part of the lifting unit (6), and the lifting unit (6) drives the rotating unit (7) to reciprocate up and down. ​ 2. A science fair display cabinet as in claim 1, wherein: The back plate body of the counter (3) is a detachable movable plate.

3. A science fair display cabinet as in claim 2, wherein: The detail collecting unit (5) comprises a mounting seat (51), a first rotating motor (52), a first coupling (53), a first arm body (54), a first swing motor (55), a second arm body (56), a second swing motor (57), a third arm body (58), a third swing motor (59), an electric push rod (510), a fourth arm body (511), a fourth swing motor (512), a camera mounting seat (513) and a camera (514), the mounting seat (51) is installed at the bottom of the cabinet top (1), the first coupling (53) is installed in the mounting seat (51), the first rotating motor (52) and the first arm body (54) are oppositely arranged at the two sides of the first coupling (53), and the power output shaft of the first rotating motor (52) is connected with one end of the first arm body (54) through the first coupling (53), the shell of the first rotating motor (52) is fixedly connected with the mounting seat (51), one end of the second arm body (56) is hingedly connected with the other end of the first arm body (54), the first swing motor (55) is installed at the hinged connection between the first arm body (54) and the second arm body (56), and the first swing motor (55) drives the second arm body (56) to swing relative to the first arm body (54), one end of the third arm body (58) is hingedly connected with the other end of the second arm body (56), the second swing motor (57) is installed at the hinged connection between the second arm body (56) and the third arm body (58), and the second swing motor (57) drives the third arm body (58) to swing relative to the second arm body (56), the closed end of the electric push rod (510) is hingedly connected with the other end of the third arm body (58), the third swing motor (59) is installed at the hinged connection between the third arm body (58) and the electric push rod (510), and the third swing motor (59) drives the electric push rod (510) to swing relative to the third arm body (58), one end of the fourth arm body (511) is fixedly connected with the piston rod end of the electric push rod (510), the other end of the fourth arm body (511) is hingedly connected with the fixed end of the camera mounting seat (513), the fourth swing motor (512) is installed at the hinged connection between the fourth arm body (511) and the camera mounting seat (513), and the fourth swing motor (512) drives the camera mounting seat (513) to swing relative to the fourth arm body (511), the camera (514) is installed in the camera mounting seat (513), the shooting end of the camera (514) is arranged to face the displayed work (13), and the camera (514) transmits image information to the detail display unit (4) through a wireless module.

4. A science fair display cabinet as in claim 3, wherein: The lifting unit (6) comprises two drive assemblies and a lifting bracket (66), the two drive assemblies are arranged in parallel and opposite to each other in the vertical direction in the counter (3), and the top of each drive assembly is detachably connected with the inner top of the counter (3), the bottom of each drive assembly is detachably connected with the inner bottom of the counter (3), and the lifting bracket (66) is arranged between the two drive assemblies, and each end of the lifting bracket (66) is fixedly connected with the lifting part of the corresponding drive assembly.

5. A science fair display cabinet as in claim 4, wherein: The driving assembly comprises a lead screw (61), a second rotating motor (62), a second coupling (63), a top connecting seat (64) and a motor fixing seat (65), the motor fixing seat (65) is detachably connected with the inner bottom of the counter (3), the shell of the second rotating motor (62) is installed in the motor fixing seat (65), and the power output shaft of the second rotating motor (62) is vertically upwardly arranged, the top connecting seat (64) is detachably connected with the inner top of the counter (3), and the top connecting seat (64) is arranged in correspondence with the motor fixing seat (65) in the up-down direction, the lead screw (61) is arranged between the top connecting seat (64) and the motor fixing seat (65) in the vertical direction, the top end of the lead screw (61) is inserted into the top connecting seat (64) and is rotatably connected with the top connecting seat (64) through a bearing, the top end of the lead screw (61) is connected with the power output shaft of the second rotating motor (62) through the second coupling (63), a nut is sleeved on the lead screw (61), the lifting bracket (66) is provided with connecting arms on both sides, and each connecting arm is arranged in correspondence with one driving assembly, one end of each connecting arm is fixedly connected with the lifting bracket (66), and the other end of each connecting arm is fixedly connected with the nut sleeved on the corresponding lead screw (61).

6. A science fair display cabinet as in claim 5, wherein: The inner bottom of the counter (3) is provided with a power module (8), the power input end of the power module (8) is connected with the power socket in the exhibition hall through an external plug, and the power output end of the power module (8) is connected with the power input end of each second rotating motor (62) and the power input end of the detail display unit (4) through wires.

7. A science fair display cabinet as in claim 6, wherein: The rotating unit (7) comprises a bottom mounting plate (71), an outer sleeve (72), a cover plate (73), an upper support plate (74), a rotating shaft (75), a connecting sleeve (76), an exhibit supporting plate (77), a third rotating motor (78), a third coupling (79), a middle support plate (710), a first bearing pressing plate (711) and a second bearing pressing plate (712). The outer sleeve (72) is arranged on the top of the bottom mounting plate (71) and is detachably connected with the bottom mounting plate (71) through bolts. The cover plate (73) is arranged on the top of the outer sleeve (72) and is detachably connected with the outer sleeve (72) through bolts. An annular protrusion is arranged on the inner wall of the outer sleeve (72). The middle support plate (710) is arranged on the annular protrusion and is detachably connected with the annular protrusion through bolts. The upper support plate (74) is arranged on the outer top of the cover plate (73) and is detachably connected with the cover plate (73) through bolts. The third rotating motor (78) is fixed on the top center of the bottom mounting plate (71) through a motor mounting seat, and the power output shaft of the third rotating motor (78) is arranged vertically upward. The bottom end of the rotating shaft (75) sequentially penetrates the upper support plate (74), the cover plate (73) and the middle support plate (710) and is connected with the power output shaft of the third rotating motor (78) through the third coupling (79). The top end of the rotating shaft (75) extends above the upper support plate (74). The connecting sleeve (76) is sleeved on the top end of the rotating shaft (75) and is keyed connected with the rotating shaft (75). The exhibit supporting plate (77) is arranged on the top end of the connecting sleeve (76) and is detachably connected with the connecting sleeve (76) through bolts. The rotating shaft (75) and the middle support plate (710) are rotatably connected through a first bearing. The first bearing is limited by the first bearing pressing plate (711) and the middle support plate (710) and is detachably connected with the middle support plate (710) through bolts. The rotating shaft (75) and the upper support plate (74) are rotatably connected through a second bearing. The second bearing is limited by the second bearing pressing plate (712) and the upper support plate (74) and is detachably connected with the upper support plate (74) through bolts.

8. A science fair display cabinet as in claim 7, wherein: The showcase further comprises a first limiting assembly arranged between the lifting bracket (66) and the power module (8). The first limiting assembly comprises a first limiting switch (9) and a first limiting contact (10). The first limiting contact (10) is fixed on the outer bottom of the lifting bracket (66). The first limiting switch (9) is fixed on the top of the power module (8). The first limiting switch (9) and the first limiting contact (10) are arranged oppositely. The first limiting switch (9) is connected in series with the power supply circuit of the two second rotating motors (62).

9. A science fair display cabinet as in claim 8, wherein: The showcase further comprises two second limiting assemblies, each of which is arranged between a top connecting seat (64) and a connecting arm, and each of the second limiting assemblies comprises a second limiting contact (11) and a second limiting switch (12), the second limiting contact (11) is fixed at the top of the corresponding connecting arm, the second limiting switch (12) is fixed at the bottom of the corresponding top connecting seat (64), the second limiting switch (12) and the second limiting contact (11) are arranged in an up-down opposite manner, and the second limiting switch (12) is connected in series with the power supply circuit of the two second rotating motors (62).

10. A science fair display cabinet as in claim 9, wherein: The detail display unit (4) comprises a controller, a computer and a display screen, the power input end of the display screen, the power input end of the controller and the power input end of the computer are connected with the power output end of the power module (8) through wires, the data input end of the display screen is connected with the data output end of the computer through wires, the camera (514) transmits image information to the computer through a wireless module, the signal output end of the controller is connected with the signal input end of the computer through wires, and the signal output end of the computer is connected with the signal input end of each rotating motor and each swing motor through a wireless module.

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