Library self-service terminal equipment for storing and taking books

Abstract

The invention relates to the technical field of book access, and discloses library self-service terminal equipment for book access, which comprises a host, a placement plate arranged at the top of the host, a display screen arranged at the top of the placement plate, and an adjusting part arranged between the host and the placement plate, the adjusting component comprises a lifting assembly arranged between the main machine and the containing plate and a first rotating assembly arranged on the lifting assembly. According to the library self-service terminal equipment for storing and taking the books, the angle of the equipment is adjusted through the adjusting component, the equipment is convenient for the disabled to use, a placement plate is driven to move back and forth, so that the placement plate is moved to the front of the disabled, and the operation difficulty of the disabled is reduced; and under the cooperation of the groove, the moving block slides up and down on the outer side of the threaded rod to drive the placing plate to move up and down, so that the operation interface of the device is not too high, and the disabled can also easily operate the device.

Description

Technical Field

[0001] The present invention relates to the technical field of book access, and in particular to a self-service terminal device for library used for book access. Background Art

[0002] As an important part of the intelligent management of modern libraries, the background technology of self-service terminal equipment for libraries mainly stems from the demand for efficient, convenient and safe book storage and access services. With the rapid development of information technology, especially the widespread application of technologies such as the Internet of Things, RFID (radio frequency identification), QR code technology, intelligent identification and remote monitoring, the application of self-service terminal equipment in the library field has become increasingly mature, providing readers with an unprecedented convenient experience.

[0003] When using the self-service terminal equipment for libraries, the operator needs to stand in front of the equipment, operate the display screen, place the books to be borrowed in the book placement area of ​​the equipment, and the equipment scans the books and displays that the borrowing is successful. It is easy for normal people to operate the equipment, but it is very difficult for disabled people such as those with inconvenient legs to borrow books. They cannot stand in front of the equipment and find it difficult to place the books in the book placement area of ​​the equipment. The existing technology has the following defects: First, since disabled people in wheelchairs have a lower body position, they often find it difficult to reach the operating interface of the library's self-service terminal equipment. The design of traditional library self-service terminal equipment usually does not fully consider the special needs of this group, resulting in the operating interface being too high, making it difficult for them to operate easily, increasing their operating difficulty. Secondly, the library's self-service terminal equipment may not reserve enough space for disabled people in wheelchairs, making it difficult for them to approach and operate the equipment smoothly. Moreover, if the equipment layout is unreasonable, such as the distance between the operating interface and the wheelchair channel is too close, it may bring additional operating obstacles to disabled people. In addition, some steps of the library's self-service terminal equipment may be too cumbersome and require multiple clicks or information input, which is particularly inconvenient for disabled people in wheelchairs; they may need to frequently adjust their body posture or ask others for help to complete these steps, thereby reducing their borrowing efficiency and experience. Summary of the invention

[0004] In view of the problem in the prior art that it is difficult for disabled people with leg problems to borrow books, a self-service terminal device for library use for storing and accessing books is proposed.

[0005] The present application provides a self-service terminal device for library use for accessing books, and its purpose is to solve the problem that the operation interface of the self-service terminal device for library use is too high, which increases the difficulty of operation for disabled people, and the device may not reserve enough space for disabled people in wheelchairs, resulting in them being unable to smoothly approach and operate the device. In addition, some steps of the device may be too cumbersome and require multiple operations, which is even more inconvenient for disabled people in wheelchairs.

[0006] The technical solution of the present invention is: a self-service terminal device for library use for storing and accessing books, comprising a host, a placement board arranged on the top of the host, and a display screen arranged on the top of the placement board, and also comprising an adjustment component arranged between the host and the placement board; The adjusting component includes a lifting assembly arranged between the main machine and the placing plate, a first rotating assembly arranged on the lifting assembly, a transmission assembly arranged on the first rotating assembly, a driving assembly arranged on the transmission assembly, and a tensioning assembly arranged on the driving assembly; The lifting assembly includes a groove opened on the main machine, a threaded rod rotatably connected to the inner side of the groove, a moving block threadedly connected to the threaded rod, the moving block is slidably connected to the inner side of the groove, an installation cavity opened on the main machine at the top of the groove, a first drive motor fixedly connected in the installation cavity, the output shaft of the first drive motor extends through the installation cavity to the inner side of the groove and is fixedly connected to the top of the threaded rod, a support rod rotatably connected to one side of the moving block, and the support rod is rotatably connected to the placement plate.

[0007] Furthermore, the first rotating assembly includes a through hole opened on the moving block, a sliding block limitedly slidably connected in the through hole, a connecting shaft rotatably connected to the sliding block, an arc groove opened on the sliding block, a rotating block slidably connected to the inner side of the arc groove, the rotating block is fixedly connected to the connecting shaft, and the connecting shaft is fixedly connected to the support rod.

[0008] Furthermore, the transmission assembly includes a movable groove opened on the sliding block, a connecting shaft extending away from one end of the support rod to the inner side of the movable groove, a connecting plate fixedly connected to the connecting shaft, two symmetrically distributed V-shaped grooves opened on the connecting plate, V-shaped blocks respectively slidably connected to the inner sides of the two V-shaped grooves, and a rotating plate fixedly connected between the two V-shaped blocks.

[0009] Furthermore, the driving assembly includes a moving frame connected to the moving block in a limited sliding manner, a second driving motor fixedly connected to the moving frame, a driving cylinder fixedly connected to the output shaft of the second driving motor, a driving shaft connected to the driving cylinder in a limited sliding manner, and the driving shaft is fixedly connected to the rotating disk.

[0010] Furthermore, the tensioning assembly includes a movable sleeve mounted on the driving shaft, a sleeve rotatably connected to the sliding block, the movable sleeve and the sleeve rotatably connected, a plurality of first rotating rods symmetrically distributed and rotatably connected to the driving shaft, a plurality of second rotating rods symmetrically distributed and rotatably connected to the movable sleeve, and a clamping plate rotatably connected between the first rotating rods and the corresponding second rotating rods.

[0011] Furthermore, the adjustment component further includes a moving component arranged on the tensioning component, a resetting component arranged on the driving component, and a second rotating component arranged between the placement plate and the support rod; The moving assembly comprises a gear fixedly sleeved on the sleeve and a rack fixedly connected in the through hole, and the gear is meshedly connected with the rack.

[0012] Furthermore, the reset assembly includes a reset spring fixedly connected between the drive shaft and the inner wall of the drive cylinder, a guide groove provided in the drive cylinder, a guide block slidably connected to the inner side of the guide groove, and the guide block is fixedly connected to the drive shaft.

[0013] Furthermore, the second rotating assembly includes an electric push rod rotatably connected to the support rod, a pushing rod rotatably connected to the output end of the electric push rod, and the pushing rod is fixedly connected to the placement plate.

[0014] Beneficial effects of the present invention: The angle of the device can be adjusted by adjusting components to facilitate use by disabled people. The placement plate is driven to rise and fall by the lifting component, and the placement plate is driven to rotate by the first rotating component. The first rotating component is driven to move forward and backward by the driving component, and the placement plate is driven to move forward and backward, so that the placement plate is moved in front of the disabled person, reducing the difficulty of operation for the disabled person. The threaded rod is driven to rotate by the first driving motor, and with the cooperation of the groove, the moving block slides up and down on the outside of the threaded rod, driving the support rod to move up and down, and driving the placement plate to move up and down, so that the operating interface of the device will not be too high, so that disabled people can also easily operate the device.

[0015] The sleeve rotates to drive the gear to rotate, causing the gear to roll on the rack, driving the moving frame to slide on the moving block, driving the drive shaft to move, driving the sliding block to move inside the through hole, driving the connecting shaft to move, driving the support rod to move, and driving the placement plate to move, so that the placement plate moves away from the main machine side, making it more convenient for disabled people to operate the device, and preventing the disabled person's seat from touching the device due to being too close to the device.

[0016] Through the cooperation of the V-block and the V-groove, the connecting disk is driven to rotate, and the clamping plate does not conflict with the inner wall of the sleeve, that is, the sleeve does not rotate. When the connecting disk is limited, the V-block slides on the inner side of the V-groove, driving the rotating disk to move, driving the drive shaft to move, so that the drive shaft slides in the movable sleeve, driving the first rotating rod and the second rotating rod to rotate, so that the clamping plate moves toward the inner wall of the sleeve and conflicts with the inner wall of the sleeve. At this time, the drive shaft rotates, driving the first rotating rod to rotate, driving the clamping plate to rotate, and driving the sleeve to rotate, so that the placement plate is in a more comfortable position for disabled people to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the regulating component of the present invention; Figure 3 It is a schematic diagram of the local structure of the adjustment component of the present invention; Figure 4 It is a partial cross-sectional structural schematic diagram of the adjustment component of the present invention; Figure 5 It is a schematic structural diagram of the first rotating assembly of the present invention; Figure 6 It is a schematic diagram of the transmission assembly structure of the present invention; Figure 7 It is a schematic diagram of the structure of the driving assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the tensioning assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the mobile component of the present invention; Fig.10 It is a schematic diagram of the structure of the reset component of the present invention.

[0018] In the figure: 1. Host; 11. Placement plate; 12. Display screen; 2. Lifting assembly; 21. Groove; 22. Threaded rod; 23. Moving block; 24. First drive motor; 25. Support rod; 3. First rotating assembly; 31. Sliding block; 32. Connecting shaft; 33. Arc groove; 34. Rotating block; 4. Transmission assembly; 41. Connecting disk; 42. V-shaped groove; 43. V-shaped block; 44. Rotating disk; 5. Driving assembly; 51. Driving shaft; 52. Driving cylinder; 53. Moving frame; 54. Second drive motor; 6. Tensioning assembly; 61. Movable sleeve; 62. Sleeve; 63. First rotating rod; 64. Second rotating rod; 65. Clamping plate; 7. Moving assembly; 71. Gear; 72. Rack; 8. Reset assembly; 81. Reset spring; 82. Guide groove; 83. Guide block; 9. Second rotating assembly; 91. Electric push rod; 92. Push rod. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] Example 1, reference Figure 1-Figure 8 , which is the first embodiment of the present invention, provides a library self-service terminal device for accessing books, including a host 1, a placement plate 11 rotatably connected to the top of the host 1, and a display screen 12 fixedly connected to the top of the placement plate 11, and also includes an adjustment component installed between the host 1 and the placement plate 11; the adjustment component includes a lifting component 2 installed between the host 1 and the placement plate 11, a first rotating component 3 installed on the lifting component 2, a transmission component 4 installed on the first rotating component 3, a driving component 5 installed on the transmission component 4, and a The tensioning assembly 6; the lifting assembly 2 includes a groove 21 opened on the main machine 1, a threaded rod 22 rotatably connected to the inner side of the groove 21, a moving block 23 threadedly connected to the threaded rod 22, the moving block 23 is slidably connected to the inner side of the groove 21, an installation cavity opened on the main machine 1 at the top of the groove 21, a first drive motor 24 fixedly connected in the installation cavity, the output shaft of the first drive motor 24 extends through the installation cavity to the inner side of the groove 21 and is fixedly connected to the top of the threaded rod 22, a support rod 25 rotatably connected to one side of the moving block 23, and the support rod 25 is rotatably connected to the placement plate 11.

[0021] Specifically, when in use, the angle of the device is adjusted by adjusting components to facilitate use by disabled people. The lifting component 2 is used to drive the placement plate 11 to rise and fall, and the first rotating component 3 is used to drive the placement plate 11 to rotate. The driving component 5 is used to drive the first rotating component 3 to move forward and backward, and the placement plate 11 is driven to move forward and backward, so that the placement plate 11 is moved in front of the disabled person, reducing the difficulty of operation for the disabled person. The first driving motor 24 is used to drive the threaded rod 22 to rotate, and with the cooperation of the groove 21, the moving block 23 slides up and down on the outside of the threaded rod 22, driving the support rod 25 to move up and down, and driving the placement plate 11 to move up and down, so that the operating interface of the device will not be too high, so that disabled people can also easily operate the device.

[0022] Reference Figure 4 and Figure 5 The first rotating assembly 3 includes a through hole opened on the moving block 23, a sliding block 31 limitedly slidably connected in the through hole, a connecting shaft 32 rotatably connected to the sliding block 31, an arc groove 33 opened on the sliding block 31, and a rotating block 34 slidably connected to the inner side of the arc groove 33. The rotating block 34 is fixedly connected to the connecting shaft 32, and the connecting shaft 32 is fixedly connected to the support rod 25.

[0023] Specifically, when the connecting shaft 32 rotates, it drives the support rod 25 to rotate, and drives the placement plate 11 to rotate, so that the rotating block 34 slides inside the arc groove 33. Under the action of the arc groove 33, the rotating block 34 stops rotating after rotating to a certain angle, so that the support rod 25 and the placement plate 11 rotate at a certain angle, so that the rotation angle of the placement plate 11 will not be too large, which increases the difficulty of adjusting the device.

[0024] Reference Figure 6 The transmission assembly 4 includes a movable groove opened on the sliding block 31, a connecting shaft 32 extending to the inner side of the movable groove away from one end of the support rod 25, a connecting plate 41 fixedly connected to the connecting shaft 32, two V-shaped grooves 42 symmetrically distributed on the connecting plate 41, V-shaped blocks 43 respectively slidably connected to the inner sides of the two V-shaped grooves 42, and a rotating plate 44 fixedly connected between the two V-shaped blocks 43.

[0025] Specifically, the rotating disk 44 rotates, driving the V-shaped block 43 to rotate, and under the action of the V-shaped groove 42, driving the connecting disk 41 to rotate, and then driving the connecting shaft 32 to rotate. When the rotating block 34 cannot rotate inside the arc groove 33, the connecting shaft 32 is limited, and the connecting disk 41 is limited. At this time, the rotating disk 44 continues to rotate, so that the V-shaped block 43 slides inside the V-shaped groove 42 until the V-shaped block 43 slides out from the inside of the V-shaped groove 42. At this time, the rotating disk 44 will no longer drive the connecting disk 41 to rotate, that is, the connecting shaft 32 no longer rotates.

[0026] Reference Figure 7 The driving assembly 5 includes a moving frame 53 which is limitedly slidably connected to the moving block 23, a second driving motor 54 which is fixedly connected to the moving frame 53, a driving cylinder 52 which is fixedly connected to the output shaft of the second driving motor 54, a driving shaft 51 which is limitedly slidably connected to the driving cylinder 52, and the driving shaft 51 is fixedly connected to the rotating disk 44.

[0027] Specifically, the second drive motor 54 is started, driving the drive cylinder 52 to rotate. Since the drive shaft 51 and the drive cylinder 52 are limited sliding, the drive shaft 51 is driven to rotate, and the rotating disk 44 is driven to rotate. When the connecting disk 41 is limited, the V-block 43 slides on the inside of the V-groove 42, driving the rotating disk 44 to move, and driving the drive shaft 51 to move toward the inside of the drive cylinder 52.

[0028] Example 2, reference Figure 8, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the tensioning assembly 6 includes a movable sleeve 61 sleeved on the driving shaft 51, a sleeve 62 rotatably connected to the sliding block 31, the movable sleeve 61 is rotatably connected to the sleeve 62, a plurality of first rotating rods 63 rotatably connected to the driving shaft 51 and symmetrically distributed, a plurality of second rotating rods 64 rotatably connected to the movable sleeve 61 and symmetrically distributed, and a clamping plate 65 rotatably connected between the first rotating rods 63 and the corresponding second rotating rods 64.

[0029] Specifically, when the driving shaft 51 drives the rotating disk 44 to rotate, the V-block 43 cooperates with the V-groove 42 to drive the connecting disk 41 to rotate, and the clamping plate 65 does not conflict with the inner wall of the sleeve 62, that is, the sleeve 62 does not rotate. When the connecting disk 41 is limited, the V-block 43 slides on the inner side of the V-groove 42, driving the rotating disk 44 to move, driving the driving shaft 51 to move, so that the driving shaft 51 slides in the movable sleeve 61, driving the first rotating rod 63 and the second rotating rod 64 to rotate, so that the clamping plate 65 moves toward the inner wall of the sleeve 62 and conflicts with the inner wall of the sleeve 62. At this time, the driving shaft 51 rotates, driving the first rotating rod 63 to rotate, driving the clamping plate 65 to rotate, and driving the sleeve 62 to rotate.

[0030] Reference Fig. 9 and Fig.10 The adjusting component also includes a moving component 7 installed on the tensioning component 6, a reset component 8 installed on the driving component 5, and a second rotating component 9 installed between the placement plate 11 and the support rod 25; the moving component 7 includes a gear 71 fixedly mounted on the sleeve 62, a rack 72 fixedly connected to the through hole, and the gear 71 is meshed with the rack 72.

[0031] Specifically, the sleeve 62 rotates, driving the gear 71 to rotate, so that the gear 71 rolls on the rack 72, driving the moving frame 53 to slide on the moving block 23, driving the driving shaft 51 to move, driving the sliding block 31 to move inside the through hole, driving the connecting shaft 32 to move, driving the support rod 25 to move, driving the placement plate 11 to move, so that the placement plate 11 moves away from the main unit 1, making it more convenient for the disabled to operate the device, so that the disabled person's seat will not touch the device due to the distance between the disabled person and the device being too close. The rest of the structure is the same as that of Example 1.

[0032] Example 3, reference Fig.10 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the reset assembly 8 includes a reset spring 81 fixedly connected between the drive shaft 51 and the inner wall of the drive cylinder 52, a guide groove 82 provided in the drive cylinder 52, and a guide block 83 slidably connected to the inner side of the guide groove 82, and the guide block 83 is fixedly connected to the drive shaft 51.

[0033] Specifically, when the drive shaft 51 moves toward the inside of the drive cylinder 52, the reset spring 81 is compressed, and with the cooperation of the guide block 83 in the guide groove 82, the drive cylinder 52 rotates, thereby driving the drive shaft 51 to rotate. When the drive shaft 51 stops moving toward the inside of the drive cylinder 52, the reset spring 81 is reset, causing the drive shaft 51 to move toward the outside of the drive cylinder 52 for reset.

[0034] Reference Figure 1 The second rotating assembly 9 includes an electric push rod 91 rotatably connected to the support rod 25 , a push rod 92 rotatably connected to the output end of the electric push rod 91 , and the push rod 92 is fixedly connected to the placement plate 11 .

[0035] Specifically, when the support rod 25 drives the placement plate 11 to rotate, the placement plate 11 will no longer be parallel to the ground. At this time, it is impossible to place books on the placement plate 11. The electric push rod 91 pushes the push rod 92 to move, so that the placement plate 11 rotates, gradually making the placement plate 11 parallel to the ground, and then it is convenient to place books on the placement plate 11. When the support rod 25 drives the placement plate 11 to rotate, the placement plate 11 can always remain horizontal with the ground. The rest of the structure is the same as that of Example 2.

[0036] In summary, the working principle of the present invention is as follows: when in use, by starting the second drive motor 54, the drive cylinder 52 is driven to rotate, the drive shaft 51 is driven to rotate, and the rotating disk 44 is driven to rotate. Under the action of the V-shaped block 43 and the V-shaped groove 42, the connecting disk 41 is driven to rotate, the connecting shaft 32 is driven to rotate, the support rod 25 is driven to rotate, and the placement plate 11 is driven to rotate. During the rotation process, the placement plate 11 gradually stops being parallel to the ground. By starting the electric push rod 91, the push rod 92 is driven to move, and the placement plate 11 is driven to rotate, so that the placement plate 11 remains parallel to the ground. The connecting shaft 32 rotates to drive the rotating block 34 to rotate inside the arc groove 33. Under the action of the arc groove 33, the rotating block 34 can only rotate to a certain angle, and the connecting shaft 32 is limited so that the connecting shaft 32 no longer rotates, so that the placement plate 11 is no longer driven to rotate by the support rod 25. At this time, the connecting disk 41 is limited, and the rotating disk 44 continues to rotate, so that the V-shaped block 43 slides to the outside of the V-shaped groove 42, driving the driving shaft 51 to move to the inside of the driving cylinder 52, compressing the reset spring 81, until the V-shaped block 43 slides out of the V-shaped groove 42, and the driving shaft 51 is in the V-shaped groove 42. When moving, the first rotating rod 63 is driven to rotate, so that the second rotating rod 64 also rotates, so that the abutting plate 65 moves, and the abutting plate 65 is pressed against the inner wall of the sleeve 62. When the driving shaft 51 rotates, the first rotating rod 63 and the second rotating rod 64 are driven to rotate, the abutting plate 65 is driven to rotate, the sleeve 62 is driven to rotate, the gear 71 is driven to rotate, so that the gear 71 rolls on the rack 72, the sleeve 62 moves in the through hole, the moving frame 53 slides on the moving block 23, the driving shaft 51 moves, the sliding block 31 moves inside the through hole, and the connecting shaft 32 is driven. The first drive motor 24 drives the threaded rod 22 to rotate, so that the moving block 23 moves up and down inside the groove 21, drives the support rod 25 to move, drives the placement plate 11 to move, and adjusts the height of the placement plate 11 so that the placement plate 11 is in a more comfortable position for the disabled person to operate.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A self-service terminal device for a library for accessing books, comprising a host (1), a placement board (11) arranged on the top of the host (1), and a display screen (12) arranged on the top of the placement board (11), characterized in that: It also includes an adjustment component arranged between the main unit (1) and the placement plate (11); The adjusting component comprises a lifting assembly (2) arranged between the main machine (1) and the placement plate (11), a first rotating assembly (3) arranged on the lifting assembly (2), a transmission assembly (4) arranged on the first rotating assembly (3), a driving assembly (5) arranged on the driving assembly (4), and a tensioning assembly (6) arranged on the driving assembly (5); The lifting assembly (2) comprises a groove (21) formed on the main machine (1), a threaded rod (22) rotatably connected to the inner side of the groove (21), a moving block (23) threadedly connected to the threaded rod (22), the moving block (23) being slidably connected to the inner side of the groove (21), a mounting cavity formed on the main machine (1) and located at the top of the groove (21), a first drive motor (24) fixedly connected to the mounting cavity, an output shaft of the first drive motor (24) extending through the mounting cavity to the inner side of the groove (21) and fixedly connected to the top of the threaded rod (22), and a support rod (25) rotatably connected to one side of the moving block (23), the support rod (25) being rotatably connected to the placement plate (11).

2. The self-service terminal device for library use for accessing books according to claim 1, characterized in that: The first rotating assembly (3) comprises a through hole formed on the moving block (23), a sliding block (31) slidably connected in a limited position in the through hole, a connecting shaft (32) rotatably connected to the sliding block (31), an arc groove (33) formed on the sliding block (31), a rotating block (34) slidably connected to the inner side of the arc groove (33), the rotating block (34) being fixedly connected to the connecting shaft (32), and the connecting shaft (32) being fixedly connected to the support rod (25).

3. The self-service terminal device for library use for accessing books according to claim 2, characterized in that: The transmission assembly (4) comprises a movable groove formed on a sliding block (31), a connecting shaft (32) extending from one end of the connecting shaft (32) away from the supporting rod (25) to the inner side of the movable groove, a connecting plate (41) fixedly connected to the connecting shaft (32), two symmetrically distributed V-shaped grooves (42) formed on the connecting plate (41), V-shaped blocks (43) respectively slidably connected to the inner sides of the two V-shaped grooves (42), and a rotating plate (44) fixedly connected between the two V-shaped blocks (43).

4. The self-service terminal device for library use for accessing books according to claim 3, characterized in that: The driving assembly (5) comprises a moving frame (53) connected to the moving block (23) in a limited sliding manner, a second driving motor (54) fixedly connected to the moving frame (53), a driving cylinder (52) fixedly connected to the output shaft of the second driving motor (54), a driving shaft (51) connected to the driving cylinder (52) in a limited sliding manner, and the driving shaft (51) is fixedly connected to the rotating disk (44).

5. The self-service terminal device for library use for accessing books according to claim 4, characterized in that: The tensioning assembly (6) comprises a movable sleeve (61) sleeved on the driving shaft (51), a sleeve (62) rotatably connected to the sliding block (31), the movable sleeve (61) and the sleeve (62) being rotatably connected, a plurality of first rotating rods (63) rotatably connected to the driving shaft (51) and symmetrically distributed, a plurality of second rotating rods (64) rotatably connected to the movable sleeve (61) and symmetrically distributed, and a clamping plate (65) rotatably connected between the first rotating rods (63) and the corresponding second rotating rods (64).

6. The self-service terminal device for library use for accessing books according to claim 5, characterized in that: The adjusting component further comprises a moving component (7) arranged on the tensioning component (6), a resetting component (8) arranged on the driving component (5), and a second rotating component (9) arranged between the placement plate (11) and the support rod (25); The moving assembly (7) comprises a gear (71) fixedly sleeved on the sleeve (62), and a rack (72) fixedly connected to the through hole, wherein the gear (71) is meshingly connected to the rack (72).

7. The self-service terminal device for library use for accessing books according to claim 6, characterized in that: The reset assembly (8) comprises a reset spring (81) fixedly connected between the drive shaft (51) and the inner wall of the drive cylinder (52), a guide groove (82) provided in the drive cylinder (52), and a guide block (83) slidably connected to the inner side of the guide groove (82); the guide block (83) is fixedly connected to the drive shaft (51).

8. The self-service terminal device for library use for accessing books according to claim 6, characterized in that: The second rotating assembly (9) comprises an electric push rod (91) rotatably connected to the support rod (25), a push rod (92) rotatably connected to the output end of the electric push rod (91), and the push rod (92) is fixedly connected to the placement plate (11).

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