CN111917958A

CN111917958A - Acquisition terminal for image processing with supplementary stable leveling mechanism

Info

Publication number: CN111917958A
Application number: CN202010786366.1A
Authority: CN
Inventors: 丁德红; 郭经纬; 郭国强; 刘丽芳
Original assignee: Hunan University of Arts and Science
Current assignee: Hunan University of Arts and Science
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-11-10
Anticipated expiration: 2040-08-07
Also published as: CN111917958B

Abstract

The invention relates to the technical field of electronic products, in particular to an image processing acquisition terminal with an auxiliary stable leveling mechanism, which comprises a box body, a camera, a display and an image acquisition device, wherein the camera is arranged in the box body, the left side of the box body is fixedly connected with a first rotating table, the display is fixedly connected above the box body, the image acquisition device is fixedly connected below a keyboard, the right side of the camera is provided with an auxiliary mechanism, the inner part of the box body is fixedly connected with a damping mechanism, and the right side of the box body is fixedly connected with a second rotating table. According to the invention, the auxiliary stabilizing and leveling mechanism is arranged, so that the image acquisition terminal has higher stability in image acquisition, the high quality of image acquisition is ensured, the protection effect on equipment is further achieved through the damping mechanism, and the safety of outdoor use of the equipment is improved.

Description

Acquisition terminal for image processing with supplementary stable leveling mechanism

Technical Field

The invention relates to the technical field of electronic products, in particular to an image processing acquisition terminal with an auxiliary stable leveling mechanism.

The image acquisition refers to the process of converting an image into a digital image after sampling and quantization, inputting the digital image into a frame memory and storing the digital image into the frame memory, the image processing refers to the process of analyzing the image by using a computer to achieve a required result, the image processing is also called image processing, generally, the digital image processing refers to digital image processing, and the image acquisition and processing device is called an acquisition terminal in the industry in a combination manner and is used for acquiring and processing the image.

To this end, the chinese application patent No. CN110976349A discloses an automatic cleaning and dust-proof device for an intelligent acquisition terminal, which belongs to the technical field of electronic products, and particularly relates to an automatic cleaning and dust-proof device for an intelligent acquisition terminal, comprising a housing, wherein the housing is a rectangular hollow box, an image acquisition device is fixedly installed inside the housing, a front baffle is fixedly installed on the front side of the top end of the housing, the front baffle is an arc-shaped plate, a front frame is fixedly installed on the front side of the housing, a rectangular frame is used as the front frame, a glass plate is fixedly installed at the hollow position in the middle of the front frame, a row of drainage holes starts to be arranged at the bottom ends of two side surfaces of the housing, in the invention, a water blocking plate pulls an elastic connecting rope downwards, when the elastic coefficient of the elastic connecting rope is greater than the adsorption force between a reverse magnetic plate and a fixed magnetic plate, the elastic connecting rope pulls the sponge plate downwards to, the sponge board that slides down can rub the surface clean up of glass board with the glass board, reaches the automatic glass board that clears up through the collection of rainwater for the glass board surface can not be infected with the spot, influences the definition of gathering the picture. The image acquisition device still does not have a stable leveling structure in the using process, so that the image acquisition device throws out the situations of shaking and the like when acquiring images, and the quality of the acquired images is influenced.

In the process of using the acquisition terminal, the existing acquisition terminal is easy to shake or incline due to external factors when image acquisition is carried out, so that the image acquisition of the equipment is greatly influenced.

Therefore, it is desirable to design an image processing acquisition terminal with an auxiliary stabilizing and leveling mechanism to solve the above problems.

Disclosure of Invention

The invention aims to provide an image processing acquisition terminal with an auxiliary stable leveling mechanism, which aims to solve the problems of poor stability and inconvenient use in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an acquisition terminal with an auxiliary stable leveling mechanism for image processing comprises a box body, a camera, a display and an image collector, wherein the camera is arranged in the box body, the left side of the box body is fixedly connected with a first rotating platform, the upper side of the box body is fixedly connected with the display, the lower side of the display is fixedly connected with a keyboard, the lower side of the keyboard is fixedly connected with the image collector, the image collector comprises a shell, a switch is fixedly arranged on the front side of the shell, a power supply interface is fixedly arranged on the left side of the switch, a memory socket is fixedly arranged on the left side of the power supply interface, a USB interface is fixedly arranged on the left side of the memory socket, a wireless interface is fixedly arranged on the left side of the USB interface, a display screen interface is fixedly arranged on the left side of the wireless interface, an auxiliary mechanism is arranged, the auxiliary mechanism comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a positioning groove, the interior of the positioning groove is movably connected with a first spring, the first spring is movably inserted with a telescopic column inside, the outer wall of the telescopic column is fixedly connected with a pressing sheet, a countersunk screw is fixedly connected above the positioning groove through a cover body, a cover plate is fixedly connected at the top of the telescopic column, the center of the cover plate is movably connected with a fixed plate, a lifting block is fixedly connected below the fixed plate, the outer wall of the lifting block is movably connected with an upper supporting rod through a rotating pin, the other end of the upper supporting rod is movably connected with the outside of the movable block through the rotating pin, a second spring is fixedly connected below the upper supporting rod, a lower supporting rod is movably connected below the second spring, the inside fixedly connected with damper of box, the right side fixedly connected with second of box rotates the platform.

Preferably, the box includes the outer container, the inner wall of outer container passes through damper fixedly connected with inner box, the inside fixedly connected with baffle of inner box, the top fixedly connected with backup pad of baffle, the top swing joint of outer container has the top cap, the positive fixedly connected with padlock of top cap.

Preferably, the left and right sides of outer container all has seted up the recess, the last fixed surface of top cap is connected with the handle, the outer container is connected through the hinge with the rear of top cap, the top cap with be the transmission and be connected, the eye-splice has been seted up to the front inner wall of outer container, the padlock is the block with the outer container and is connected.

Preferably, the bottom plate is of a rectangular structure, anti-slip lines are fixedly arranged on the lower surface of the bottom plate, the bottom of the bottom plate is provided with a rubber pad, a sliding groove is formed in the positioning groove, a threaded hole is formed in the top end of the positioning groove, and three groups of positioning grooves are formed in the positioning groove.

Preferably, go up branch and be through the rotating pin and be connected with the elevator rotation, it is connected with the activity block rotation to go up branch, lower branch is the same with last branch structure, and is the rotation with elevator and activity block and is connected, it is provided with three groups to go up branch, and evenly distributed is at the outer wall of elevator, the outer wall fixedly connected with journal stirrup of elevator.

Preferably, the movable block is of a hollow structure, a sliding column is arranged inside the movable block, and the other end of the sliding column is fixed with the positioning groove.

Preferably, the lower part of the pressing sheet is fixedly connected with the buckle, the lower part of the pressing sheet is fixedly connected with the first spring, the outer wall of the pressing sheet is fixedly connected with the sliding block, and the pressing sheet is in sliding connection with the positioning groove.

Preferably, damper includes the internal connection board, the upper surface of internal connection board passes through hexagon bolt fixedly connected with inner box, the lower fixed surface of internal connection board is connected with movable post, the below swing joint of activity post has the fixed slot, the outside fixedly connected with pressure spring of fixed slot and activity post, the lower fixed surface of fixed slot is connected with the external connection board, and just through hexagon bolt fixed connection at the inner wall of outer container.

Preferably, the second swivel stand includes the riser, the left side fixedly connected with outer container of riser, the right-hand member of riser has the dwang through bolt swing joint, the last fixed surface of dwang is connected with the extension platform, swing joint has the bracing piece between dwang and the riser, the right side swing joint of bracing piece has the control lever.

Preferably, the vertical plate is rotatably connected with the rotating rod through a bolt, a sliding groove is formed in the right side of the rotating rod, a groove is formed in the lower surface of the rotating rod, and the vertical plate is rotatably connected with the supporting rod.

Compared with the prior art, the invention has the beneficial effects that:

1. this acquisition terminal for image processing is through setting up complementary unit, plays the stability and the levelling to equipment to make collection system can keep its stable effect, further also can keep its horizontal effect, and then play the stable support and the horizontal effect to equipment in the image acquisition in-process of equipment, through mutually supporting of spring and branch, play the stable effect to equipment, prevent that it from appearing rocking and slope, and then make the image acquisition of equipment have more stable effect.

2. This collection terminal for image processing carries out centralized design with required equipment, and set to the suitcase size, the top sets up to processing apparatus, acquisition device has been deposited to the below, high durability and convenient use, and the size is suitable, can deal with the image acquisition under the emergency and handle, portable, and through complementary unit, can cooperate acquisition device more steady the collection that carries out the image, further play the protecting effect to equipment through setting such as protection machanism, through the use of storing space and extension platform, make things convenient for the use of equipment more, and portable, application range and availability factor are increased.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present invention;

FIG. 2 is a schematic view of the top cover of the present invention in an unfolded configuration;

FIG. 3 is an enlarged view of the structure A in FIG. 1 according to the present invention;

FIG. 4 is a schematic front view of the auxiliary mechanism of the present invention;

FIG. 5 is an enlarged view of B of FIG. 4 according to the present invention;

FIG. 6 is a schematic top view of a partial structure of the auxiliary mechanism of the present invention;

FIG. 7 is a schematic view of the shock absorbing mechanism of the present invention;

fig. 8 is a front view of a second rotating table according to the present invention.

In the figure: 1. a box body; 11. an outer box; 12. an inner box; 13. a partition plate; 14. a support plate; 15. a top cover; 16. locking; 2. a camera; 3. a first rotating table; 4. a display; 5. a keyboard; 6. an image collector; 61. a housing; 62. a switch; 63. a power interface; 64. a memory socket; 65. a USB interface; 66. a wireless interface; 67. a display screen interface; 7. an auxiliary mechanism; 71. a base plate; 72. positioning a groove; 73. a first spring; 74. a telescopic column; 75. a cover plate; 76. a fixing plate; 77. a lifting block; 78. a rotation pin; 79. an upper support rod; 710. a movable block; 711. a second spring; 712. tabletting; 713. a cover body; 714. countersunk screws; 715. a lower support rod; 8. a damping mechanism; 81. an inner connection plate; 82. a hexagon bolt; 83. a movable post; 84. fixing grooves; 85. a pressure spring; 86. an outer connecting plate; 9. a second rotating table; 91. a vertical plate; 92. a bolt; 93. rotating the rod; 94. an extension table; 95. a support bar; 96. a control lever.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, an embodiment of the present invention:

an acquisition terminal with an auxiliary stable leveling mechanism for image processing comprises a box body 1, a camera 2, a display 4 and an image collector 6, wherein the camera 2 is arranged in the box body 1, the basic working principle of the camera is the same, optical image signals are converted into electric signals to be stored or transmitted conveniently, a first rotating table 3 is fixedly connected to the left side of the box body 1, the display 4 is fixedly connected to the upper side of the box body 1, the display 4 is also commonly called as a monitor, the display 4 is an I/O (input/output) device belonging to a computer, and is a display tool which displays certain electronic files on a screen through a specific transmission device and reflects the electronic files to human eyes, a keyboard 5 is fixedly connected to the lower side of the display 4, and the image collector 6 is fixedly connected to the lower side of the keyboard 5 and has the function of collecting the image signals into the computer, the digital video signal is stored on a hard disk in the form of a data file, which is hardware equipment essential for image processing, and through the digital video signal, video signals shot by the camera 2 can be transferred from a camera tape to a computer, and the digital video signals are subjected to post-editing processing by using relevant video editing software.

Image collector 6 includes casing 61, casing 61's the fixed switch 62 that is provided with in front, controlgear opens and stops, switch 62's the fixed power source 63 that is provided with in left side, power source 63's the fixed memory socket 64 that is provided with in left side, the fixed USB interface 65 that is provided with in left side of memory socket 64, the fixed wireless interface 66 that is provided with in left side of USB interface 65, the fixed display screen interface 67 that is provided with in left side of wireless interface 66, its bottom and top all are provided with the rubber pad, it is not hard up to avoid image collector 6 to appear, lead to appearing colliding with.

The right side of the camera 2 is provided with an auxiliary mechanism 7, the auxiliary mechanism 7 comprises a bottom plate 71, the upper surface of the bottom plate 71 is fixedly connected with a positioning groove 72, the inside of the positioning groove 72 is movably connected with a first spring 73, the inside of the first spring 73 is movably inserted with a telescopic column 74, the outer wall of the telescopic column 74 is fixedly connected with a pressing sheet 712, the upper part of the positioning groove 72 is fixedly connected with a countersunk screw 714 through a cover body 713, the top of the telescopic column 74 is fixedly connected with a cover plate 75, the center of the cover plate 75 is movably connected with a fixing plate 76, the lower part of the fixing plate 76 is fixedly connected with a lifting block 77, the outer wall of the lifting block 77 is movably connected with an upper supporting rod 79 through a rotating pin 78, the other end of the upper supporting rod 79 is movably connected with the outside of the movable block 710 through the rotating pin 78, the lower part of the upper supporting rod 79 is fixedly, can play the stable stay and the horizontally keeping to camera 2, and then realize camera 2's stable little flower, make the image quality of its collection obtain promoting, the inside fixedly connected with damper 8 of box 1 plays the protective effect, avoids appearing colliding with, and the right side fixedly connected with second of box 1 rotates platform 9, plays the effect of desktop extension, increases usable floor area.

Box 1 includes

outer container

11, 8 fixedly connected with inner box 12 of damper are passed through to the inner wall of outer container 11, the inside fixedly connected with baffle 13 of inner box 12, baffle 13's top fixedly connected with backup pad 14, the top swing joint of outer container 11 has top cap 15, top cap 15's positive fixedly connected with padlock 16, setting through the ectonexine, play certain protecting effect, avoid dropping, the condition of breaking appears, and the stopper rod of connecting when padlock 16 adopts the hinge, can play the limiting displacement to its turned angle, make it can carry out the regulation of angle.

The left and right sides of outer container 11 all sets up flutedly, and the last fixed surface of top cap 15 is connected with the handle, and outer container 11 is connected through the hinge with the rear of top cap 15, and top cap 15 with be the transmission and be connected, the eye-splice has been seted up to the positive inner wall of

outer container

11, and 16 and outer container 11 are the block and are connected, facilitate the use and install.

Bottom plate 71 is the rectangle structure, and the lower fixed surface of bottom plate 71 is provided with anti-skidding line, and the bottom of bottom plate 71 is provided with the rubber pad, and the spout has been seted up to the inside of constant head tank 72, and the top of constant head tank 72 has seted up the screw hole, and constant head tank 72 is provided with three groups, plays the effect of support.

Go up branch 79 and be rotation connection through swivel pin 78 with the elevator block 77, it is rotation connection with movable block 710 to go up branch 79, lower branch 715 is the same with last branch 79 structure, and be rotation connection with elevator block 77 and movable block 710, it is provided with three groups to go up branch 79, and evenly distributed is at the outer wall of elevator block 77, the outer wall fixedly connected with journal stirrup of elevator block 77, play stable parallel effect, the effect of rotation through last branch 79 and lower branch 715, can keep the stability of fixed plate 76, thereby play the stability and the leveling to top camera 2.

The movable block 710 is a hollow structure, and a sliding column is arranged inside, and the other end of the sliding column is fixed to the positioning groove 72, so that when the upper supporting rod 79 rotates, the movable block 710 can be moved through the sliding column.

The below fixed connection buckle of preforming 712, and the first spring 73 of below fixedly connected with, the outer wall fixedly connected with slider of preforming 712, preforming 712 and constant head tank 72 are sliding connection, realize the supporting effect to apron 75, also play the fixed effect of direction, have increased the stability of equipment, when appearing going up and down to rock, can realize the support to flexible post 74 through the effect of first spring 73, and then keep the shape of equipment.

Damper 8 includes interconnection plate 81, interconnection plate 81's upper surface passes through hexagon bolt 82 fixedly connected with inner box 12, interconnection plate 81's lower fixed surface is connected with movable post 83, the below swing joint of activity post 83 has fixed slot 84, the outside fixedly connected with pressure spring 85 of fixed slot 84 and activity post 83, the lower fixed surface of fixed slot 84 is connected with outer connecting plate 86, and pass through hexagon bolt 82 fixed connection at the inner wall of outer container 11, realize the shock attenuation buffering of outer container 11 and inner box 12 through the evil result, thereby play the protecting effect to inner box 12 internals, avoid inner box 12 internals to appear colliding with etc..

Second swivel stand 9 includes riser 91, the left side fixedly connected with outer container 11 of riser 91, there is dwang 93 riser 91's right-hand member through bolt 92 swing joint, the last fixed surface of dwang 93 is connected with extension platform 94, swing joint has bracing piece 95 between dwang 93 and the riser 91, the right side swing joint of bracing piece 95 has control lever 96, this structure can expand top service platform, and then make things convenient for personnel to carry out image processing, also can be used to place first swivel stand 3 and go on, camera 2's image acquisition uses, increase the practicality of equipment.

Riser 91 is through bolt 92 and dwang 93 and is rotated and be connected, the right side of dwang 93 is provided with the spout, the lower surface of dwang 93 is seted up flutedly, riser 91 is with bracing piece 95 to rotate to be connected and realizes the support to bracing piece 95 through control lever 96, and then plays the support to power source 63, when packing up, press control lever 96, then with the right-hand member of extension platform 94 press down can, know that dwang 93 laminates riser 91 completely.

The working principle is as follows: when the portable camera is used, the portable camera is firstly installed and used according to the using condition, when the portable camera is used, the camera 2 and the auxiliary mechanism 7 are firstly taken out, the camera 2 is further installed above the fixing plate 76, the image acquisition processing can be further carried out according to the field condition, the auxiliary mechanism 7 is firstly placed above the corresponding support, the stable support and the horizontal processing of the camera 2 can be further realized through the structure of the auxiliary mechanism 7, the high-quality image acquisition of the camera 2 can be further realized, or the portable camera can be carried on the auxiliary mechanism 7 to move, the image acquisition use of a special field can be realized, the acquired image can be further transmitted to the image acquisition device 6 through the image acquisition device 6 to be processed, and the image can be effectively processed and acquired.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an acquisition terminal for image processing with supplementary stable leveling mechanism, includes box (1), camera (2), display (4) and image collector (6), its characterized in that: the inside of box (1) is provided with camera (2), the left side fixedly connected with first revolving platform (3) of box (1), the top fixedly connected with display (4) of box (1), the below fixedly connected with keyboard (5) of display (4), the below fixedly connected with image collector (6) of keyboard (5), image collector (6) includes casing (61), the front of casing (61) is fixedly provided with switch (62), the left side of switch (62) is fixedly provided with power source (63), the left side of power source (63) is fixedly provided with memory socket (64), the left side of memory socket (64) is fixedly provided with USB interface (65), the left side of USB interface (65) is fixedly provided with wireless interface (66), the left side of wireless interface (66) is fixedly provided with display screen interface (67), the right side of the camera (2) is provided with an auxiliary mechanism (7), the auxiliary mechanism (7) comprises a bottom plate (71), the upper surface of the bottom plate (71) is fixedly connected with a positioning groove (72), the inside of the positioning groove (72) is movably connected with a first spring (73), the inside of the first spring (73) is movably inserted with a telescopic column (74), the outer wall of the telescopic column (74) is fixedly connected with a pressing sheet (712), the upper part of the positioning groove (72) is fixedly connected with a countersunk screw (714) through a cover body (713), the top of the telescopic column (74) is fixedly connected with a cover plate (75), the center of the cover plate (75) is movably connected with a fixing plate (76), the lower part of the fixing plate (76) is fixedly connected with a lifting block (77), the outer wall of the lifting block (77) is movably connected with an upper supporting rod (79) through a rotating pin, the other end of going up branch (79) passes through rotating pin (78) swing joint in the outside of movable block (710), the below fixedly connected with second spring (711) of going up branch (79), the below swing joint of second spring (711) has lower branch (715), the inside fixedly connected with damper (8) of box (1), the right side fixedly connected with second of box (1) rotates platform (9).

2. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 1, characterized in that: the box (1) comprises an outer box (11), the inner wall of the outer box (11) is provided with an inner box (12) fixedly connected with a damping mechanism (8), the inner fixedly connected with partition plate (13) of the inner box (12), a supporting plate (14) fixedly connected with the upper part of the partition plate (13), a top cover (15) movably connected with the top of the outer box (11), and a buckle lock (16) fixedly connected with the front side of the top cover (15).

3. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 2, characterized in that: the left and right sides of outer container (11) all seted up flutedly, the last fixed surface of top cap (15) is connected with the handle, outer container (11) are connected through the hinge with the rear of top cap (15), top cap (15) with be the transmission and be connected, the eye-splice has been seted up to the front inner wall of outer container (11), padlock (16) are the block with outer container (11) and are connected.

4. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 1, characterized in that: the bottom plate (71) is of a rectangular structure, anti-skid grains are fixedly arranged on the lower surface of the bottom plate (71), a rubber pad is arranged at the bottom of the bottom plate (71), a sliding groove is formed in the positioning groove (72), a threaded hole is formed in the top end of the positioning groove (72), and three groups of positioning grooves (72) are arranged.

5. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 1, characterized in that: go up branch (79) and be through rotating pin (78) and lift piece (77) and rotate and be connected, it is to rotate with movable block (710) to go up branch (79) and is connected, down branch (715) are the same with last branch (79) structure, and are to rotate with lift piece (77) and movable block (710) and be connected, it is provided with three groups to go up branch (79), and evenly distributed is at the outer wall of lift piece (77), the outer wall fixedly connected with journal stirrup of lift piece (77).

6. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 1, characterized in that: the movable block (710) is of a hollow structure, a sliding column is arranged inside the movable block, and the other end of the sliding column is fixed with the positioning groove (72).

7. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 1, characterized in that: the lower part of the pressing piece (712) is fixedly connected with a buckle, the lower part of the pressing piece is fixedly connected with a first spring (73), the outer wall of the pressing piece (712) is fixedly connected with a sliding block, and the pressing piece (712) is in sliding connection with the positioning groove (72).

8. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 1, characterized in that: damper (8) include in-connection board (81), hex bolts (82) fixedly connected with inner box (12) are passed through to the upper surface of in-connection board (81), the lower fixed surface of in-connection board (81) is connected with movable post (83), the below swing joint of activity post (83) has fixed slot (84), fixed slot (84) and the outside fixedly connected with pressure spring (85) of activity post (83), the lower fixed surface of fixed slot (84) is connected with outer connecting plate (86), and through hex bolts (82) fixed connection at the inner wall of outer container (11).

9. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 1, characterized in that: the second rotates platform (9) and includes riser (91), the left side fixedly connected with outer container (11) of riser (91), the right-hand member of riser (91) has dwang (93) through bolt (92) swing joint, the last fixed surface of dwang (93) is connected with extension platform (94), swing joint has bracing piece (95) between dwang (93) and riser (91), the right side swing joint of bracing piece (95) has control lever (96).

10. The image processing acquisition terminal with an auxiliary stabilization and leveling mechanism according to claim 9, characterized in that: riser (91) are through bolt (92) and dwang (93) and are rotated and be connected, the right side of dwang (93) is provided with the spout, the lower surface of dwang (93) is seted up flutedly, riser (91) are to rotate with bracing piece (95) and are connected.