Large-scale parking lot off-line transaction device

Abstract

The invention discloses a large-scale parking lot off-line transaction device which comprises an off-line transaction device body provided with a display screen and an IC card induction area, the off-line transaction device body is installed at the upper end of a stand column, an installation base at the lower end of the stand column is fixedly installed on the ground, and the large-scale parking lot off-line transaction device further comprises a magnetic protection unit. When the stand column rotates, the off-line transaction equipment body is rapidly sealed in a sealed protection cavity, buffering is carried out through the magnetic force effect, and the off-line transaction equipment body is prevented from making contact with the ground and being collided and damaged. And the cleaning unit is used for cleaning the magnetic protection unit so as to ensure the magnetic buffering effect of the magnetic protection unit. The off-line transaction equipment is provided with the magnetic protection unit and the cleaning unit, so that after collision, the protection cylinder stops rotating motion and is finally in a suspension state, a good protection effect can be formed on the off-line transaction equipment, the off-line transaction equipment is effectively prevented from being collided and damaged, and meanwhile, the influence of impurities such as dust on magnetic force is also avoided.

Description

Technical Field

[0001] The invention relates to the technical field of parking lot transaction, and in particular to an offline transaction device for a large parking lot. Background Art

[0002] Offline transaction equipment is generally installed in some large parking lots with incomplete network coverage or poor signals. Most of these offline transaction equipment are used for offline payment by swiping IC cards. The offline transaction equipment can make up for the shortcomings of insufficient network and ensure the continuity of service.

[0003] The existing offline transaction equipment in large parking lots has poor protection capabilities, especially when the parking lot exit is located near an uphill section or at a corner. It is easy for the driver to accidentally hit the offline transaction equipment due to improper operation or poor vision, and ultimately cause damage to the offline transaction equipment. Therefore, this application provides a large parking lot offline transaction equipment to meet the needs. Summary of the invention

[0004] The purpose of this application is to provide a large-scale parking lot offline transaction device, which is used to solve the technical problem of poor protection capability of large-scale parking lot offline transaction devices in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an offline transaction device for a large parking lot, comprising an offline transaction device body on which a display screen and an IC card sensing area are arranged, the offline transaction device body is mounted on the upper end of a column, and a mounting seat at the lower end of the column is fixedly mounted on the ground, and further comprising a magnetic protection unit, which quickly seals the offline transaction device body in a sealed protection cavity while the column rotates in the event of a collision, and performs buffering through magnetic force to prevent the offline transaction device body from contacting the ground and being damaged by the collision; It also includes a cleaning unit for cleaning the magnetic protection unit to ensure the magnetic buffering effect of the magnetic protection unit.

[0006] As a preferred implementation in this embodiment, the magnetic protection unit includes a protection unit and a magnetic buffer unit; The protection unit comprises a column consisting of a rotating cylinder and a movable rod, and a protection cylinder slidably sleeved on the movable rod; A ball is fixed at the lower end of the rotating cylinder, and the ball is movably arranged in the inner cavity of the mounting seat, an elastic fastening pad is arranged between the ball and the inner cavity of the mounting seat, and a notch is arranged on the mounting seat; The bottom of the protective tube is conical, and the offline transaction device body can enter and exit the inner cavity of the protective tube. Two vertical poles are fixed on the outer wall of the protective tube, and the lower ends of the two vertical poles slide through the corresponding mounting plates and are fixedly connected to the baffle. Two groups of limit plates are fixed on the mounting plate, one group of limit plates is fixed with a positioning spring, and the other end of the positioning spring is fixed with a positioning rod, and the triangular positioning head of the positioning rod slides through the other group of limit plates, and the vertical pole is provided with a positioning groove adapted to the triangular positioning head; The lower end of the movable rod is vertically movably arranged in the inner cavity of the rotating cylinder, and an L-shaped driving rod is rotatably arranged in the inner cavity of the rotating cylinder. The cross bar arranged at the upper end of the L-shaped driving rod is located in a spiral groove arranged on the inner cavity wall of the movable rod. The lower end of the L-shaped driving rod is located in the inner cavity of the sphere and is connected to a fixed shaft through a bevel gear. The fixed shaft is arranged at the rotation axis of the sphere, and the left end of the fixed shaft passes through the sphere and the elastic fastening pad and is fixedly connected to the inner wall of the mounting seat. The spiral groove is divided into two sections, denoted as L1 and L2, and the spiral pitch between L1 is greater than the spiral pitch between L2; The two vertical poles are arranged on the back side of the movable pole; A top plate is fixed to the upper end of the offline transaction device body, and a plurality of elastic sheets are circumferentially arranged on the lower end of the top plate, and a plurality of the elastic sheets are provided with positioning protrusions, a rectangular slot matching the elastic sheet is arranged at the upper end of the protective tube, and an inner concave positioning groove matching the positioning protrusion is arranged on the inner wall of the rectangular slot; The magnetic buffer unit includes a first magnet, a second magnet, and a long plate; The long plate is installed in the same position as the notch and is fixed on the mounting seat, the first magnet is arranged in the mounting groove of the long plate, the second magnet is installed in the mounting groove of the plate body, the plate body is installed on the back side of the protective tube, and the first magnet and the second magnet have the same outer magnetic pole; The cleaning unit includes a driving shaft on the same horizontal line as the axis of the ball, a transmission shaft rotatably arranged in the inner cavity of the mounting seat, a cleaning push plate slidably engaged with the outer wall of the long plate, and a driving screw; The mounting end of the driving shaft is fixedly arranged on the outer surface of the sphere, and both ends of the transmission shaft are respectively connected to the driving shaft and the driving screw through bevel gears, and the driving screw is rotatably arranged on the mounting seat, and the driving screw thread is rotatably arranged in the inner cavity of the upper moving rod, and the moving rod is slidably clamped on the cleaning push plate, and an elastic positioning head is provided on the moving rod, and a positioning groove adapted to the elastic positioning head is provided on the cleaning push plate; A limit stop bar is fixed on the side end of the long plate to block the cleaning push plate.

[0007] As a preferred implementation in this embodiment, a centrifugal adjustment unit is further provided, which can adjust the magnetic action area between the first magnet and the second magnet according to the centrifugal force generated when the protective cylinder makes a circular motion, thereby adapting to the buffering of the protective cylinder moving at different speeds.

[0008] As a preferred implementation manner in this embodiment, the centrifugal adjusting unit includes a magnetic shielding plate and a connecting spring. The magnetic shielding plate is slidably disposed in the mounting groove of the plate body and covers part of the second magnet. The upper end of the magnetic shielding plate is fixedly connected to the inside of the mounting groove of the plate body through a connecting spring.

[0009] As a preferred implementation manner in this embodiment, it also includes a resistance unit for preventing the magnetic shielding plate from quickly returning to its original position.

[0010] As a preferred implementation manner in this embodiment, the buffer unit includes a rubber cam rotatably arranged in the inner cavity of the plate body through a rotating shaft, and a first baffle bar fixedly arranged on the rotating shaft and the inner cavity wall of the plate body respectively, and two groups of second baffle bars arranged on the same side, the rubber cam is located directly below the magnetic isolation baffle, the outer wall of the rubber cam is in sliding contact with the lower end of the magnetic isolation baffle, and the first baffle bar is located between the two groups of the second baffle bars.

[0011] In summary, the technical effects and advantages of the present invention are as follows: The invention has a reasonable structure. The offline transaction device is provided with a magnetic protection unit and a cleaning unit, which can stop the rotation of the protection tube after a collision and finally put it into a suspended state, thus forming a good protection effect for the offline transaction device, effectively preventing it from being damaged by collision, and also preventing the influence of impurities such as dust on the magnetic force. 2. In the present invention, the centrifugal adjustment unit can adjust the magnetic action area between the first magnet and the second magnet according to the centrifugal force generated when the protective tube makes a circular motion, thereby adapting to the buffering of the protective tube moving at different speeds.

[0012] 3. In the present invention, the retarding unit is used to prevent the magnetic shield from quickly returning to its original position, prolong the corresponding magnetic repulsion time, increase the deceleration effect, and avoid contact between the protective tube and the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a rear view structural schematic diagram of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the moving rod and the cleaning push plate; Figure 3 for Figure 1 Schematic diagram of the rear view structure of the middle protective tube; Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure of the middle protective tube; Figure 5 for Figure 1 Schematic diagram of the cross-section structure of the center column; Figure 6 for Figure 3 Schematic diagram of the cross-section structure of the middle plate; Figure 7 for Figure 1 Middle front view structure diagram In the figure: 1. mounting seat; 2. elastic fastening pad; 3. sphere; 4. notch; 5. long board; 6. rotating cylinder; 7. offline trading equipment body; 8. moving rod; 81. elastic positioning head; 82. driving screw; 9. elastic sheet; 10. positioning protrusion; 11. protective cylinder; 12. movable rod; 121. spiral groove; 13. vertical rod; 14. rectangular slot; 15. mounting plate; 16. limit plate; 17. positioning spring; 18. positioning rod; 19. triangular positioning head; 20. positioning groove; 21. L-shaped driving rod; 22. fixed shaft; 23. first magnet; 24. plate body; 25. second magnet; 26. magnetic shield; 27. connecting spring; 28. cleaning push plate; 29. ​​rubber cam; 30. first stop bar; 31. second stop bar; 32. driving shaft; 33. transmission shaft; 34. limit stop bar. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Example: Reference Figure 1A large parking lot offline transaction device is shown, comprising an offline transaction device body 7 on which a display screen and an IC card sensing area are arranged, the offline transaction device body 7 is mounted on the upper end of a column, and a mounting base 1 at the lower end of the column is fixedly mounted on the ground, and also comprises a magnetic protection unit, which quickly seals the offline transaction device body 7 in a sealed protection cavity while the column rotates in the event of a collision, and buffers the offline transaction device body 7 through magnetic force to prevent the offline transaction device body 7 from contacting the ground and being damaged by the collision; It also includes a cleaning unit for cleaning the magnetic protection unit to ensure the magnetic buffering effect of the magnetic protection unit.

[0017] As a preferred implementation in this embodiment, Figure 1-5 As shown, the magnetic protection unit includes a protection unit and a magnetic buffer unit; The protection unit includes a column composed of a rotating cylinder 6 and a movable rod 12, and a protection cylinder 11 slidably sleeved on the movable rod 12; A ball 3 is fixed to the lower end of the rotating cylinder 6, and the ball 3 is movably arranged in the inner cavity of the mounting seat 1, an elastic fastening pad 2 is arranged between the ball 3 and the inner cavity of the mounting seat 1, and a notch 4 is arranged on the mounting seat 1; The bottom of the protective tube 11 is conical, and the offline transaction device body 7 can enter and exit the inner cavity of the protective tube 11. Two vertical poles 13 are fixed on the outer wall of the protective tube 11, and the lower ends of the two vertical poles 13 slide through the corresponding mounting plates 15 and are fixedly connected to the baffle. Two groups of limit plates 16 are fixed on the mounting plate 15, one group of limit plates 16 is fixed with a positioning spring 17, and the other end of the positioning spring 17 is fixed with a positioning rod 18, and the triangular positioning head 19 of the positioning rod 18 slides through the other group of limit plates 16, and a positioning groove 20 adapted to the triangular positioning head 19 is provided on the vertical pole 13; The lower end of the movable rod 12 is vertically movable and arranged in the inner cavity of the rotating cylinder 6. The inner cavity of the rotating cylinder 6 is rotatably provided with an L-shaped driving rod 21. The cross bar arranged at the upper end of the L-shaped driving rod 21 is located in a spiral groove 121 arranged on the inner cavity wall of the movable rod 12. The lower end of the L-shaped driving rod 21 is located in the inner cavity of the ball 3 and is connected to the fixed shaft 22 through a bevel gear. The fixed shaft 22 is arranged at the rotation axis of the ball 3. The left end of the fixed shaft 22 penetrates the ball 3 and the elastic fastening pad 2 and is fixedly connected to the inner wall of the mounting seat 1. The spiral groove 121 is divided into two sections, denoted as L1 and L2, and the spiral pitch between L1 is greater than the spiral pitch between L2; Two vertical rods 13 are arranged on the back of the movable rod 12; A top plate is fixed to the upper end of the offline transaction device body 7, and a plurality of elastic sheets 9 are arranged circumferentially on the lower end of the top plate, and a positioning protrusion 10 is arranged on each of the plurality of elastic sheets 9. A rectangular slot 14 matching the elastic sheet 9 is arranged at the upper end of the protective tube 11, and an inner concave positioning groove matching the positioning protrusion 10 is arranged on the inner wall of the rectangular slot 14; The magnetic buffer unit includes a first magnet 23, a second magnet 25, and a long plate 5; The long plate 5 is installed in the same position as the notch 4 and is fixed on the mounting seat 1. The first magnet 23 is arranged in the mounting groove of the long plate 5. The second magnet 25 is installed in the mounting groove of the plate body 24. The plate body 24 is installed on the back of the protective tube 11. The outer end magnetic poles of the first magnet 23 and the second magnet 25 are the same. The cleaning unit includes a driving shaft 32 which is on the same horizontal line as the axis of the ball 3, a transmission shaft 33 which is rotatably arranged in the inner cavity of the mounting seat 1, a cleaning push plate 28 which is slidably engaged with the outer wall of the long plate 5, and a driving screw 82; The mounting end of the driving shaft 32 is fixedly arranged on the outer surface of the ball 3, and both ends of the transmission shaft 33 are respectively connected to the driving shaft 32 and the driving screw 82 through bevel gears. The driving screw 82 is rotatably arranged on the mounting seat 1, and the driving screw 82 is threadably rotatably arranged in the inner cavity of the upper moving rod 8. The moving rod 8 is slidably connected to the cleaning push plate 28. The moving rod 8 is provided with an elastic positioning head 81, and the cleaning push plate 28 is provided with a positioning groove adapted to the elastic positioning head 81; A limit stop bar 34 is fixed on the side end of the long plate 5 to block the cleaning push plate 28 .

[0018] After the front of the column is hit by a vehicle, the column rotates in the direction of entering the notch 4. At the same time, as the column rotates, the L-shaped driving rod 21 inside the rotating cylinder 6 rotates under the action of the bevel gear, and the rotation of the L-shaped driving rod 21 drives the movable rod 12 to move toward the inner cavity of the rotating cylinder 6, thereby shortening the height of the column. At the beginning, the movable rod 12 drives the offline transaction device body 7 to move relative to the protective cylinder 11 into the rotating cylinder 6 until the offline transaction device body 7 completely enters the protective cylinder 11. At this time, the elastic The sheet 9 is plugged into the upper end of the protective tube 11, and the positioning protrusion 10 arranged thereon moves into the concave positioning groove. At this time, as the movable rod 12 continues to move toward the inner cavity of the rotating tube 6, it will drive the protective tube 6 to move along the direction of the rotating tube 6 (at this time, the vertical rod 13 is subjected to the downward extrusion force, so that the triangular positioning head 19 moves out of the positioning groove 20, and the vertical rod 13 can move along the direction of the rotating tube 6). Through the magnetic force of the first magnet 23 and the second magnet 25, the protective tube 11 is finally suspended to avoid contact with the ground and cause Collision damage, when it is necessary to restore the fallen column to its original position, it is only necessary to rotate the column in the opposite direction to make it rotate in the opposite direction, and at the same time, the L-shaped driving rod 21 rotates in the opposite direction, and the movable rod 12 will drive the protective tube 11 and the offline transaction device body 7 to extend outward. After the triangular positioning head 19 is plugged into the positioning groove 20 (the protective tube 11 is blocked at this time), as the movable rod 12 continues to extend outward, the protective tube 11 will be separated from the top plate of the offline transaction device body 7, that is, after being blocked, the movable rod 12 can only continue to drive the offline transaction device body 7 to extend outward, and finally make the offline transaction device body 7 move out of the protective tube 11. At this time, the column is in an upright state, and the squeezing force between the elastic fastening pad 2 and the ball 3 keeps the column stable, and each component is restored to its original position. The operation is simple and convenient. When the device is hit and rotated on the front of the column, the offline transaction device body 7 can be stored in the protective tube 11 (to prevent the subsequent offline transaction device body 7 from directly contacting and colliding with the ground) while changing the length of the column (so that the device can complete the operation even with a small activity space); A cleaning unit is provided. When the column rotates in the direction of entering the notch 4, the rotation of the ball 3 will drive the driving shaft 32 to rotate, and finally drive the driving screw 82 to rotate through the transmission shaft 33. The rotating driving screw 82 drives the moving rod 8 to move, and the movement of the moving rod 8 will drive the cleaning push plate 28 (an elastic cushion layer may be provided at the bottom) to move, so as to wipe off the dust on the first magnet 23 before the magnetic force of the two magnets acts (to avoid dust and debris covering and blocking the magnetic force between the two magnets). When the cleaning push plate 28 is blocked and cannot be pushed, the elastic positioning head 81 on the moving rod 8 moves out of the positioning groove and continues to slide along the slide groove provided at the side end of the cleaning push plate 28 until the protective tube 11 is in a suspended state; During the resetting process of the column, the driving screw 82 moves in the reverse direction, and the cleaning push plate 28 is driven to return to its original position and contact with the limit stop bar 34 through the extrusion force between the elastic positioning head 81 and the cleaning push plate 28. The moving rod 8 continues to move in the reverse direction, and finally the elastic positioning head 81 moves to the positioning groove and returns to its original position.

[0019] It should be noted that: 1. The spiral pitch between L1 is greater than the spiral pitch between L2, the purpose of which is to speed up the offline transaction device body 7 to enter the protective cylinder 11, realize rapid protection of the offline transaction device body 7, and reduce the risk of the offline transaction device body 7 being scratched by the vehicle due to slow movement; 2. The bottom of the protective cylinder 11 is set as a conical structure, which can form an extrusion guide with the vehicle, which is conducive to the retraction of the movable rod 12 into the rotating cylinder 6; 3. The access wire of the offline transaction device body 7 passes through the movable rod 12 and passes out from the axis of the fixed shaft 22 and is connected to the power supply system; 4. A through hole is set at the bottom of the protective cylinder 7, and rainwater and dust can be discharged through the through hole; 5. The present invention can also be applied to wired transaction equipment; 6. When the protective cylinder 11 is in a suspended state, its height is lower than the height of the vehicle chassis (that is, the chassis cannot continue to form contact with the protective cylinder 11), so as to avoid secondary damage to the protective cylinder 11 or the entire device when the subsequent vehicle is removed.

[0020] As a preferred implementation in this embodiment, Figure 3 As shown, a centrifugal adjustment unit is also provided, which can adjust the magnetic action area between the first magnet 23 and the second magnet 25 according to the centrifugal force generated when the protective cylinder 11 makes a circular motion, thereby adapting to the buffering of the protective cylinder 11 moving at different speeds.

[0021] Since the effective area between the second magnet 25 and the first magnet 23 remains unchanged, for a rapidly rotating column, the first magnet 23 and the second magnet 25 will be very close to each other due to the movement speed and inertia, which will lead to a large repulsive force. The large repulsive force causes the column to rotate in the opposite direction, which can easily cause the protective tube 11 to collide with the vehicle, so a centrifugal adjustment unit is provided.

[0022] As a preferred implementation manner in this embodiment, the centrifugal adjusting unit includes a magnetic isolation baffle 26 and a connecting spring 27. The magnetic isolation baffle 26 is slidably set in the mounting groove of the plate body 24 and covers part of the second magnet 25. The upper end of the magnetic isolation baffle 26 is fixedly connected to the inside of the mounting groove of the plate body 24 through the connecting spring 27.

[0023] For the protection cylinder 11 rotating at a low speed, the centrifugal force generated is very small, and the magnetic shielding plate 26 basically does not move. The protection cylinder 11 can be decelerated by the repulsive force between the unshielded part of the second magnet 25 and the first magnet 23, and finally put into a suspended state. For the protection cylinder 11 rotating rapidly (caused by the excessively fast collision speed of the vehicle), a large centrifugal force will be generated on the magnetic shielding plate 26. According to the magnitude of the centrifugal force, the magnetic shielding plate 26 will compress the connecting spring 27 and expose the shielded part, thereby increasing the repulsive force. , which can quickly decelerate the fast-moving protective tube 11. At the same time, when the protective tube 11 decelerates, the centrifugal force it generates on the magnetic shielding plate 26 is reduced. Through the elastic force of the connecting spring 27, the magnetic shielding plate 26 will move outward to block a part of the second magnet 25. As the speed of the protective tube 11 gradually decreases, the magnetic shielding plate 26 will gradually block the second magnet 25, and finally the protective tube 11 will be in a relatively stable suspended state, and will not generate a large repulsive reaction force to cause the protective tube 11 to rotate in the opposite direction and cause collision damage.

[0024] It should be noted that the connection spring 27 is a linear spring, which can be precisely adjusted according to the magnitude of the centrifugal force, which is beneficial to the subsequent rapid deceleration of the protective tube 11 and the formation of a good magnetic buffer.

[0025] As a preferred implementation manner in this embodiment, a resistance unit is also included to prevent the magnetic shielding plate 26 from quickly returning to its original position.

[0026] When the speed of the rotational movement of the protective cylinder 11 decreases, its magnetic shielding plate 26 immediately forms a partial shielding for the second magnet 25 accordingly. The corresponding magnetic repulsion force does not act long enough, and the deceleration effect is poor, which causes the protective cylinder 11 to contact and collide with the components on the long plate 5. Therefore, a blocking unit is provided to hinder the magnetic shielding plate 26 from quickly returning to its original position, so as to fully decelerate the protective cylinder 11 and avoid the poor deceleration effect, which causes the protective cylinder 11 to contact and collide with the components.

[0027] As a preferred implementation in this embodiment, Figure 6 As shown, the damping unit includes a rubber cam 29 rotatably arranged in the inner cavity of the plate body 24 through a rotating shaft, a first baffle 30 fixedly arranged on the rotating shaft and the inner cavity wall of the plate body 24 respectively, and two groups of second baffles 31 arranged on the same side. The rubber cam 29 is located directly below the magnetic isolation baffle 26, and the outer wall of the rubber cam 29 slides against the lower end of the magnetic isolation baffle 26, and the first baffle 30 is located between the two groups of second baffles 31.

[0028] When the magnetic shielding plate 26 releases the shielding of the second magnet 25 due to the centrifugal force (at the beginning, the first baffle 30 contacts the second baffle 31 arranged below to form a blockage), the magnetic shielding plate 26 moves and drives the rubber cam 29 to rotate through the friction force. At this time, the friction force on the magnetic shielding plate 26 is small and the movement speed is fast. When the magnetic shielding plate 26 blocks the second magnet 25 (at this time, the rubber cam 29 rotates so that its upper protrusion contacts the magnetic shielding plate 26, and the first baffle 30 contacts the second baffle 31 arranged above to form a blockage, so that the magnetic shielding plate 26 is subjected to constant friction resistance), the protruding part of the rubber cam 29 contacts the lower end of the magnetic shielding plate 26. At this time, the friction force on the magnetic shielding plate 26 is large and the movement speed is slow. By slowing down the movement speed of the magnetic shielding plate 26 when the magnetic shielding plate 26 blocks the second magnet 25, the corresponding magnetic repulsion force action time is extended, the deceleration effect is increased, and the protective tube 11 is prevented from contacting and colliding with the components.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large parking lot offline transaction device, comprising an offline transaction device body (7) provided with a display screen and an IC card sensing area, the offline transaction device body (7) being mounted on the upper end of a column, and a mounting base (1) at the lower end of the column being fixedly mounted on the ground, characterized in that: It also includes a magnetic protection unit, which, when a collision occurs, quickly seals the offline transaction device body (7) in a sealed protection cavity while the column rotates, and provides buffering through magnetic force, thereby preventing the offline transaction device body (7) from contacting the ground and being damaged by the collision; It also includes a cleaning unit for cleaning the magnetic protection unit to ensure the magnetic buffering effect of the magnetic protection unit.

2. A large parking lot offline transaction device according to claim 1, characterized in that: The magnetic protection unit includes a protection unit and a magnetic buffer unit; The protection unit comprises a column consisting of a rotating cylinder (6) and a movable rod (12), and a protection cylinder (11) slidably sleeved on the movable rod (12); A sphere (3) is fixed to the lower end of the rotating cylinder (6), and the sphere (3) is movably arranged in the inner cavity of the mounting seat (1), an elastic fastening pad (2) is arranged between the sphere (3) and the inner cavity of the mounting seat (1), and a notch (4) is arranged on the mounting seat (1); The bottom of the protective tube (11) is conical, and the offline transaction device body (7) can enter and exit the inner cavity of the protective tube (11). Two vertical poles (13) are fixed on the outer wall of the protective tube (11), and the lower ends of the two vertical poles (13) slide through the corresponding mounting plates (15) and are fixedly connected to the baffle plate. Two groups of limit plates (16) are fixed on the mounting plate (15), one group of the limit plates (16) is fixed with a positioning spring (17), and the other end of the positioning spring (17) is fixed with a positioning rod (18), and the triangular positioning head (19) of the positioning rod (18) slides through the other group of the limit plates (16), and the vertical pole (13) is provided with a positioning groove (20) adapted to the triangular positioning head (19); The lower end of the movable rod (12) is vertically movable in the inner cavity of the rotating cylinder (6); an L-shaped driving rod (21) is rotatably arranged in the inner cavity of the rotating cylinder (6); a cross bar arranged at the upper end of the L-shaped driving rod (21) is located in a spiral groove (121) arranged on the inner cavity wall of the movable rod (12); the lower end of the L-shaped driving rod (21) is located in the inner cavity of the ball (3) and is connected to a fixed shaft (22) through a bevel gear; the fixed shaft (22) is arranged at the rotation axis of the ball (3); the left end of the fixed shaft (22) passes through the ball (3) and the elastic fastening pad (2) and is fixedly connected to the inner wall of the mounting seat (1); The spiral groove (121) is divided into two sections, denoted as L1 and L2, and the spiral pitch between the L1 is greater than the spiral pitch between the L2; The two vertical rods (13) are arranged on the back side of the movable rod (12); A top plate is fixed to the upper end of the offline transaction device body (7), and a plurality of elastic sheets (9) are circumferentially arranged at the lower end of the top plate, and a positioning protrusion (10) is provided on each of the plurality of elastic sheets (9), and a rectangular slot (14) matching the elastic sheet (9) is provided at the upper end of the protective tube (11), and an inner concave positioning groove matching the positioning protrusion (10) is provided on the inner wall of the rectangular slot (14); The magnetic buffer unit comprises a first magnet (23), a second magnet (25), and a long plate (5); The long plate (5) is installed in the same position as the notch (4) and is fixed on the mounting seat (1); the first magnet (23) is arranged in the mounting groove of the long plate (5); the second magnet (25) is installed in the mounting groove of the plate body (24); the plate body (24) is installed on the back side of the protective tube (11); the first magnet (23) and the second magnet (25) have the same outer magnetic poles; The cleaning unit comprises a driving shaft (32) which is on the same horizontal line as the axis of the ball (3), a transmission shaft (33) which is rotatably arranged in the inner cavity of the mounting seat (1), a cleaning push plate (28) which is slidably engaged with the outer wall of the long plate (5), and a driving screw (82); The mounting end of the driving shaft (32) is fixedly arranged on the outer surface of the sphere (3), and both ends of the transmission shaft (33) are respectively connected to the driving shaft (32) and the driving screw (82) through bevel gears. The driving screw (82) is rotatably arranged on the mounting seat (1), and the driving screw (82) is threadably rotatably arranged in the inner cavity of the upper moving rod (8). The moving rod (8) is slidably engaged with the cleaning push plate (28), and an elastic positioning head (81) is provided on the moving rod (8), and a positioning groove matched with the elastic positioning head (81) is provided on the cleaning push plate (28); A limit stop bar (34) is fixed on the side end of the long plate (5) for blocking the cleaning push plate (28).

3. A large parking lot offline transaction device according to claim 2, characterized in that: A centrifugal adjustment unit is also provided, which can adjust the magnetic action area between the first magnet (23) and the second magnet (25) according to the centrifugal force generated when the protective cylinder (11) performs circular motion, thereby adapting to the buffering of the protective cylinder (11) moving at different speeds.

4. A large parking lot offline transaction device according to claim 3, characterized in that: The centrifugal adjustment unit comprises a magnetic shielding plate (26) and a connecting spring (27); the magnetic shielding plate (26) is slidably disposed in a mounting groove of the plate body (24) and shields a portion of the second magnet (25); the upper end of the magnetic shielding plate (26) is fixedly connected to the inside of the mounting groove of the plate body (24) via the connecting spring (27).

5. A large parking lot offline transaction device according to claim 4, characterized in that: It also comprises a resistance unit, which is used to prevent the magnetic shielding plate (26) from quickly returning to its original position.

6. A large parking lot offline transaction device according to claim 5, characterized in that: The damping unit comprises a rubber cam (29) rotatably arranged in the inner cavity of the plate body (24) via a rotating shaft, a first baffle (30) and two groups of second baffles (31) respectively fixedly arranged on the rotating shaft and the inner cavity wall of the plate body (24), wherein the rubber cam (29) is located directly below the magnetic shielding plate (26), the outer wall of the rubber cam (29) is in sliding contact with the lower end of the magnetic shielding plate (26), and the first baffle (30) is located between the two groups of the second baffles (31).

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