High-capacity shopping cart escalator

Abstract

The invention discloses an escalator for a large-capacity shopping cart, and aims to overcome the defects that in the prior art, when the large-capacity shopping cart is designed, a more protruding carriage needs to be designed, so that the turning radius of the escalator is increased, the size of the whole escalator equipment is increased, and the production cost is increased. The technical problem is solved through the following technical scheme: a truss is provided with a rear wheel transportation track and a carriage transportation track; the driving assembly comprises a driving main shaft, a drag chain wheel arranged on the driving main shaft and a driving main engine for driving the drag chain wheel to rotate; the dragging plate chain and the dragging plate are wound on the dragging chain wheel; one end of the dragging plate is rotationally arranged on a rotating shaft of the dragging plate chain, and the other end of the dragging plate abuts against the dragging plate conveying rail; the carriage is also provided with a carriage groove; the fluctuating angle of the dragging plate is adjusted along the track of the dragging plate conveying rail, so that the angle of the shopping cart is adjusted, and the shopping cart is prevented from interfering with the escalator.

Description

Technical Field

[0001] The present invention relates to the technical field of escalators, and more particularly to a large-capacity shopping cart escalator. Background Art

[0002] Shopping cart escalators have become popular in recent years. Shopping cart escalators are usually installed in shopping supermarkets and are often arranged in parallel with escalators. Escalators are used to transport passengers up and down, while shopping cart escalators are only used to transport shopping carts up and down in supermarkets.

[0003] With the improvement of living standards, the capacity of shopping carts is getting bigger and bigger. The larger the volume of the shopping cart, the smaller the distance between the tail of the shopping cart basket and the ground. When designing a shopping cart escalator, it is necessary to consider whether there is interference between the tail of the shopping basket and the escalator equipment cover when going down. If a conventional design is adopted, a more protruding drag plate is required. Although it can avoid interference, an overly protruding drag plate will greatly increase the turning radius, thereby increasing the size of the entire escalator equipment and increasing production costs. Summary of the invention

[0004] The present invention overcomes the disadvantages of the prior art that, when designing a large-capacity shopping cart, a more protruding drag plate is required, thereby increasing the turning radius of the escalator, further increasing the size of the entire escalator equipment, and further increasing the production cost. A large-capacity shopping cart automatic escalator is provided, which can be used for shopping carts with larger capacity without increasing the turning radius of the escalator, and there will be no interference between the shopping cart and the escalator.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a large-capacity shopping cart escalator, comprising: A truss, on which a rear wheel transport track and a pallet transport track are arranged; A driving assembly includes a driving spindle, a drag chain sprocket disposed on the driving spindle, and a driving mainframe driving the drag chain sprocket to rotate; The drag chain assembly comprises a drag plate chain and a drag plate wound on a drag chain sprocket; one end of the drag plate is rotatably arranged on a rotating shaft of the drag plate chain, and the other end of the drag plate abuts against a drag plate transport track; a drag plate groove is also arranged on the drag plate; The crossbar of the shopping cart is stuck in the groove of the drag plate, the drag chain sprocket drives the drag plate chain to move, the drag plate chain drives the drag plate to move along the truss, the drag plate follows the trajectory of the drag plate transport track, adjusts the ups and downs of the drag plate, and then adjusts the angle of the shopping cart to prevent the shopping cart from interfering with the escalator.

[0006] In the present invention, when the shopping cart moves along the escalator driven by the carriage, one end of the carriage is rotatably connected to the chain, and the other end of the carriage moves along the carriage transport track, so that the carriage moves along the track of the carriage transport track during the movement of the carriage, thereby changing the angle between the carriage and the ground, thereby changing the position of the shopping cart crossbar, and then adjusting the posture of the shopping cart, thereby avoiding interference between the large-capacity shopping cart and the escalator. Compared with the prior art, the present application can adjust the posture of the shopping cart when it moves on the escalator through the cooperation between the carriage and the carriage transport track, thereby avoiding interference between the shopping cart and the escalator; it does not need to change the turning radius of the escalator, nor does it need to change the size of other escalator equipment to achieve the transportation of large shopping carts.

[0007] Preferably, the pallet is triangular; the three vertices on the triangular pallet are respectively the first vertices, the second vertices and the third vertices; the first vertices are rotatably connected to the rotating shaft of the pallet chain, and the pallet groove is arranged at the second vertices; the third vertices are provided with an abutment wheel that abuts against the pallet transport track.

[0008] The triangle is stable. During the operation of the carriage, each of the carriage groove, the abutment wheel and the first through hole has a force point, so that the carriage can remain stable during operation.

[0009] Preferably, a movable tow hook and a reset part for resetting the movable tow hook are provided on one side of the drag plate groove; the cross bar of the shopping cart hits the movable tow hook, causing the movable tow hook to rotate to avoid the cross arm of the shopping cart. After the cross arm of the shopping cart passes over the movable tow hook, the drag plate moves to clamp the cross arm of the shopping cart into the drag plate groove.

[0010] The movable unhooking enables the crossbar to be easily inserted into the groove of the carriage.

[0011] Preferably, a side of the movable towing hook away from the groove of the towing plate is arranged as an arc surface.

[0012] When the shopping cart crossbar hits the arc surface, the arc surface plays a guiding role, so that the shopping cart crossbar can more easily pass over the movable towing hook.

[0013] Preferably, the drive assembly further comprises a main drive sprocket arranged on the drive main shaft, an output wheel is arranged at the output end of the drive main shaft, and the output wheel and the main drive sprocket are driven by a chain.

[0014] The drag chain passes around the drag chain sprocket on the driven shaft and the drag chain sprocket on the driving main shaft. The driving main machine drives the main driving sprocket to rotate through the chain, the active driving sprocket drives the driving main shaft to rotate, the driving main shaft drives the drag chain sprocket to rotate, and the drag chain sprocket drives the drag chain to move.

[0015] Preferably, gates and door opening components for driving the gates to open and close automatically are provided on both sides of the truss ends.

[0016] Gates and door opening components can be set at both ends of the elevator to prevent customers from mistakenly entering the shopping cart escalator and causing danger.

[0017] Preferably, the door opening assembly comprises: The door opening driving turntable has a plurality of turntable levers evenly distributed in the circumferential direction; A rotating pressure block is slidably arranged on the gate shaft, and a pressure block spring is arranged at the bottom of the rotating pressure block to push it to move in the vertical direction; a convex rod, an upper arc groove and a lower arc groove are arranged on the side wall of the rotating pressure block; a boss is arranged on the top of the rotating pressure block; The limiting assembly includes a limiting rod and a limiting compression spring, wherein the limiting compression spring pushes the end of the limiting rod to abut against the upper arc groove or the lower arc groove; an upper slope and a lower slope are respectively arranged at the top of the limiting rod near the rotating pressure block; Trigger assembly: after the shopping cart approaches the gate or passes through the gate, the trigger assembly pushes the rotating pressing block to move downward.

[0018] By setting up a door opening component, the power of the driving spindle can be utilized. At the same time, through the cooperation of the trigger component, the gate can be automatically opened and closed when the shopping cart passes through the gate; thereby effectively preventing customers from mistakenly entering the gate and entering the escalator dedicated to shopping carts, preventing the occurrence of danger.

[0019] Preferably, the trigger assembly includes a trigger pressure plate, a trigger pressure rod and a pressure plate reset torsion spring, and the pressure plate reset torsion spring enables the trigger pressure plate to be reset; one end of the trigger pressure rod is fixedly connected to the trigger pressure plate, and the other end of the trigger pressure rod is provided with a pressure rod waist hole, and the gate shaft is passed through the pressure rod waist hole.

[0020] The trigger assembly can be provided with a cylinder separately. When the sensor detects that the shopping cart is close to or far away from the gate, the cylinder is pushed to act on the rotating pressing block to press the rotating pressing block downward. In this embodiment, the above mechanical mechanism is used to complete the process of pressing the rotating pressing block downward, which has the advantages of stable structure and low cost.

[0021] Preferably, a small transmission sprocket is arranged on the driving main shaft, the door opening driving turntable is fixedly arranged on the door opening driving shaft, a small door opening sprocket is arranged on the door opening driving shaft, and the door opening small sprocket and the transmission small sprocket are driven by a chain.

[0022] The door opening drive turntable can be provided with a separate motor to drive the door opening drive turntable to rotate. In this embodiment, in order to save costs, the door opening drive turntable is linked to the driving main shaft. The driving main shaft drives the door opening drive shaft to rotate under the action of the chain, thereby causing the door opening drive turntable to rotate.

[0023] Preferably, a shaft slide groove is arranged along the axial direction of the gate shaft on the side wall, and a boss slider matching with the shaft slide groove is arranged on the rotating pressure block.

[0024] The rotating pressing block can slide along the axial direction of the gate shaft, but the rotating pressing block cannot rotate relative to the gate shaft in the circumferential direction.

[0025] Compared with the prior art, the present invention has the following beneficial effects: (1) In the present application, the posture of the shopping cart when moving on the escalator can be adjusted by the cooperation between the pallet and the pallet transport track, thereby avoiding interference between the shopping cart and the escalator; the transportation of large shopping carts can be achieved without changing the turning radius of the escalator or the size of other escalator equipment; (2) A door opening assembly is provided, which can utilize the power of the driving spindle and cooperate with the trigger assembly to realize automatic opening and closing of the gate when the shopping cart passes through the gate; thereby effectively preventing customers from mistakenly entering the gate and entering the escalator dedicated to shopping carts, thereby preventing the occurrence of danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a running track diagram of the shopping cart of the present invention on an escalator.

[0028] Figure 3 It is a structural diagram of the drive assembly of the present invention.

[0029] Figure 4 It is a three-dimensional structural diagram of the drag chain assembly of the present invention.

[0030] Figure 5 It is a front view of the drag chain assembly of the present invention.

[0031] Figure 6 It is a schematic diagram of the shopping cart crossbar of the present invention colliding with a movable towing hook.

[0032] Figure 7 It is a schematic diagram of the shopping cart crossbar of the present invention when it passes over the movable towing hook.

[0033] Figure 8 It is a three-dimensional structural diagram of the door opening assembly of the present invention.

[0034] Fig. 9 It is a three-dimensional structural schematic diagram of the gate shaft and the trigger assembly of the present invention.

[0035] Fig.10 It is a structural schematic diagram of the door opening drive turntable and the drive main shaft of the present invention.

[0036] Fig.11 It is a schematic structural diagram of the shopping cart of the present invention when the front wheel presses on the trigger pressure plate.

[0037] Fig.12 It is a three-dimensional structural diagram of the rotating pressing block of the present invention.

[0038] Fig.13 It is a three-dimensional structural diagram of the gate shaft of the present invention.

[0039] Fig.14 It is a three-dimensional structural diagram of the limiting component of the present invention.

[0040] In the figure: 1, truss, 11, rear wheel transport track, 12, pallet transport track, 13, top end, 14, bottom end, 15, crossbar; 2. Drive assembly, 21. Drive spindle, 22. Drag chain sprocket, 23. Drive mainframe, 24. Main drive sprocket, 25. Transmission small sprocket, 3. Drag chain; 4. a drag plate, 41. a first perforation, 42. a drag plate groove, 43. an abutting wheel, 44. a movable towing hook, 45. a reset member, 46. a groove perforation, 47. a groove rotating shaft, 48. a groove limiting block; 5. gate, 51. gate shaft, 511. shaft slideway, 52. gate torsion spring; 6. trigger assembly, 61. trigger shaft, 62. trigger pressure plate, 63. trigger pressure rod, 631. pressure rod waist hole, 64. pressure plate reset torsion spring, 65. shaft fixing seat; 7. Door opening drive turntable, 71. Turntable lever, 72. Door opening drive shaft, 73. Door opening small sprocket; 8. Rotating pressing block, 81. Through hole, 82. Pressing block spring, 83. Protruding rod, 84. Upper arc groove, 85. Lower arc groove, 86. Boss, 87. Boss slider; 9. Limiting assembly, 91. Limiting rod, 911. Up slope, 912. Down slope, 92. Limiting compression spring. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: Reference Figures 1 to 7 As shown, a large-capacity shopping cart escalator comprises: Truss 1, on which rear wheel transport track 11 and pallet transport track 12 are arranged; The driving assembly 2 includes a driving spindle 21, a drag chain sprocket 22 disposed on the driving spindle 21, and a driving main unit 23 for driving the drag chain sprocket 22 to rotate; The drag chain assembly includes a drag chain 3 and a drag plate 4 wound around a drag chain sprocket 22; one end of the drag plate 4 is rotatably arranged on the rotating shaft of the drag chain 3, and the other end of the drag plate 4 abuts against the drag plate transport track 12; and a drag plate groove 42 is also arranged on the drag plate 4; The crosspiece 15 of the shopping cart is stuck in the slide groove 42, the slide chain sprocket 22 drives the slide chain 3 to move, the slide chain 3 drives the slide 4 to move along the truss 1, and the slide 4 follows the trajectory of the slide transport track 12 to adjust the ups and downs of the slide 4, thereby adjusting the angle of the shopping cart to prevent the shopping cart from interfering with the escalator.

[0042] In the present invention, when the shopping cart moves along the escalator driven by the carriage 4, one end of the carriage 4 is rotatably connected to the chain, and the other end of the carriage 4 moves along the carriage transport track 12, so that the carriage 4 moves along the track of the carriage transport track 12 during the movement of the carriage 4, thereby changing the angle between the carriage 4 and the ground, thereby changing the position of the shopping cart crossbar 15, and then adjusting the posture of the shopping cart, thereby avoiding interference between the large-capacity shopping cart and the escalator. Compared with the prior art, the present application can adjust the posture of the shopping cart when moving on the escalator through the cooperation between the carriage 4 and the carriage transport track 12, thereby avoiding interference between the shopping cart and the escalator; it is not necessary to change the turning radius of the escalator, nor the size of other escalator equipment to achieve the transportation of large shopping carts.

[0043] Example 2: Reference Figures 1 to 7 As shown, a large-capacity shopping cart escalator includes: a truss 1, a drive assembly 2 and a drag chain assembly.

[0044] The truss 1 is provided with a rear wheel transport track 11 and a pallet transport track 12; the rear wheel transport track 11 is arranged on both sides of the truss 1 in the width direction, and is adapted to the two rear wheels of the shopping cart when transporting the shopping cart, and the pallet transport track 12 is arranged between the two rear wheel transport tracks 11.

[0045] like Figure 1 and Figure 3 As shown, the driving assembly 2 includes a driving main shaft 21, a drag chain sprocket 22 arranged on the driving main shaft 21, and a driving main body 23 driving the drag chain sprocket 22 to rotate.

[0046] The drag chain assembly includes a drag chain 3 and a drag plate 4 wound around a drag chain sprocket 22; one end of the drag plate 4 is rotatably set on the rotating shaft of the drag chain 3, and the other end of the drag plate 4 abuts against the drag plate transport track 12; the drag plate 4 is also provided with a drag plate groove 42.

[0047] The shopping cart comprises a shopping basket, two front legs and a rear leg respectively arranged at the front and rear positions of the bottom of the shopping basket, the ends of the front legs are provided with front wheels, and the ends of the rear legs are provided with rear wheels. A crossbar 15 is arranged between the two front legs.

[0048] The crosspiece 15 of the shopping cart is stuck in the groove 42 of the drag plate, the drag chain sprocket 22 drives the chain to move, the drag plate chain 3 drives the drag plate 4 to move along the truss 1, and the drag plate 4 follows the trajectory of the drag plate transport track 12 to adjust the ups and downs of the drag plate 4, thereby adjusting the angle of the shopping cart to prevent the shopping cart from interfering with the escalator.

[0049] The truss 1 is provided with a high end 13 and a bottom end 14. The driving assembly 2 in this embodiment is arranged at the high end 13 of the truss 1. A driven shaft is arranged at the bottom end 14 of the truss 1, and a drag chain sprocket 22 is also arranged on the driven shaft. A main driving sprocket 24 is also arranged on the driving main shaft 21, and an output wheel is arranged at the output end of the driving main shaft 23, and the output wheel and the main driving sprocket 24 are transmitted through a chain. The drag plate chain 3 bypasses the drag chain sprocket 22 on the driving driven shaft and the drag chain sprocket 22 on the driving main shaft 21, and the driving main shaft 23 drives the main driving sprocket 24 to rotate through the chain, the active driving sprocket drives the driving main shaft 21 to rotate, the driving main shaft 21 drives the drag chain sprocket 22 to rotate, and the drag chain sprocket 22 drives the drag plate chain 3 to move.

[0050] like Figures 5 to 7 As shown, the carriage 4 is triangular, and the three vertex angles of the triangular carriage 4 are respectively the first vertex angle, the second vertex angle and the third vertex angle; the first vertex angle is provided with a first through hole 41, and the rotating shaft of the carriage chain 3 passes through the first through hole 41, so that the first vertex angle position of the triangular carriage 4 is rotatably connected with the rotating shaft of the carriage chain 3, and the carriage groove 42 is provided at the second vertex angle; the third vertex angle is provided with an abutting wheel 43 that abuts against the carriage transport track 12. The third vertex angle is located below the first vertex angle and the second vertex angle, and when the escalator is running, the abutting wheel 43 is also located below the first vertex angle and the second vertex angle.

[0051] A movable hook 44 and a reset member 45 for resetting the movable hook 44 are provided on one side of the drag plate groove 42. Specifically, the movable hook 44 is provided at a position close to one side of the first vertex of the drag plate groove 42. A groove through hole 46 is provided on one side of the drag plate groove 42. A groove shaft 47 is provided in the groove through hole 46. The movable hook 44 is rotatably provided on the groove shaft 47. The reset member 45 is a torsion spring, which is provided on the groove shaft 47 to reset the movable hook 44. A groove stopper 48 for limiting the position of the movable hook 44 is provided in the groove. The reset member 45 makes the movable hook 44 abut against the groove stopper 48.

[0052] The crossbar 15 of the shopping cart hits the movable towing hook 44, causing the movable towing hook 44 to rotate to avoid the crossbar of the shopping cart. After the crossbar of the shopping cart passes over the movable towing hook 44, the carriage 4 moves to clamp the crossbar of the shopping cart into the carriage groove 42.

[0053] In one embodiment, two drag chain 3 are provided, and the two drag chain 3 are respectively located on both sides of the drag plate 4. Therefore, correspondingly, two drag chain sprocket wheels 22 cooperating with the two drag chain 3 are provided on the driving main shaft 21 and the driving driven shaft.

[0054] The two carriage chains 3 are arranged on both sides of the carriage 4, so that both sides of the carriage 4 can be subjected to uniform thrust, thereby providing a more stable thrust for the carriage 4, and further providing a more stable thrust for the transportation of the shopping cart.

[0055] In one embodiment, the side of the movable hook 44 away from the drag plate groove 42 is configured as an arc surface. When the shopping cart crossbar 15 hits the arc surface, the arc surface plays a guiding role, so that the shopping cart crossbar 15 can more easily pass over the movable hook 44.

[0056] In one embodiment, the triangular carriage 4 is in the shape of a sector. The third carriage 4 is in the shape of a sector with the first vertex as the center and the second and third vertex as endpoints. That is, the distance between the first vertex and the second vertex is L1, the distance between the first vertex and the third vertex is L2, and the second vertex and the third vertex form an arc segment C.

[0057] The structure of the carriage 4 is fan-shaped, and the center of the fan-shaped carriage 4 is rotatably connected to the rotating shaft of the carriage chain 3. When the carriage 4 rotates, the carriage groove 42 and the abutment wheel 43 rotate around the center of the carriage 4. Therefore, in the design calculation, it is easier to accurately design the corresponding carriage transport track 12 according to the size of the fan-shaped carriage 4.

[0058] The working principle of this embodiment is as follows: Taking the escalator going down as an example, the customer pushes the shopping cart into the escalator device, and first the crossbar 15 of the shopping cart will collide with the movable hook 44. Under the impact of the crossbar 15, the movable hook 44 will overcome the force of the reset member 45 and rotate. At the same time, as the shopping cart moves, the rotation angle of the movable hook 44 gradually increases. After the crossbar 15 passes over the movable hook 44, the movable hook 44 is reset under the action of the torsion spring, and the movable hook 44 abuts against the groove limiter to return to its original position.

[0059] Afterwards, the carriage 4 moves forward driven by the carriage chain 3. During the movement of the carriage 4, the movable towing hook 44 abuts against the cross bar 15, and the movable towing hook 44 pushes the cross bar 15 to move forward. Then, under the action of the carriage transport track 12, the carriage 4 rotates around the first vertex angle, so that the carriage groove 42 begins to rise upward, so that the cross arm completely falls into the carriage groove 42.

[0060] When the shopping cart moves along the escalator driven by the carriage 4, one end of the carriage 4 is rotatably connected to the carriage chain 3, and the other end of the carriage 4 moves along the carriage transport track 12, so that the carriage 4 moves along the track of the carriage transport track 12 during the movement of the carriage 4, thereby changing the angle between the carriage 4 and the ground, thereby changing the position of the shopping cart crossbar 15, and then adjusting the posture of the shopping cart, thereby avoiding interference between the large-capacity shopping cart and the escalator.

[0061] Compared with the prior art, the present application can adjust the posture of the shopping cart when it moves on the escalator through the cooperation between the pallet 4 and the pallet transport track 12, thereby avoiding interference between the shopping cart and the escalator; there is no need to change the turning radius of the escalator, nor the size of other equipment on the escalator, so as to realize the transportation of large shopping carts.

[0062] Example 3: Reference Figures 8 to 14 As shown, the structure of this embodiment is similar to that of the embodiment 2, except that gates 5 and door opening components that drive the gates to open and close automatically are provided on both sides of the end of the truss 1. The gates 5 and the door opening components can be provided at both ends of the elevator. When the shopping cart passes through the gates 5, they can be opened and closed automatically, so that the shopping cart can smoothly enter the escalator dedicated to the shopping cart, and remain in a normally closed state under normal conditions, thereby preventing customers from mistakenly entering the escalator dedicated to the shopping cart and causing danger. In this embodiment, the gates 5 and the door opening components are only provided at the entrance of the escalator. There are two gates 5 in this embodiment, and the two gates 5 correspond to one door opening component respectively.

[0063] The door opening assembly includes a trigger assembly 6, a door opening drive turntable 7, a rotating pressure block 8 and a limit assembly 9.

[0064] A plurality of turntable levers 71 are evenly distributed in the circumferential direction of the door opening drive turntable 7 .

[0065] like Figure 8 , Fig. 9 As shown, a gate shaft 51 is connected to the gate 5, and the gate shaft 51 can drive the gate 5 to rotate. A gate torsion spring 52 is arranged on the gate shaft 51, and the gate torsion spring 52 can reset the gate shaft 51. When the gate shaft 51 loses the external force, the gate 5 is reset under the action of the valve torsion spring, and the two gates 5 are horizontal at the entrance of the escalator to close the entrance of the escalator.

[0066] like Fig.12 As shown, the rotating pressing block 8 is provided with a through hole 81, and the gate shaft 51 is passed through the through hole 81. The rotating pressing block 8 is slidably arranged on the gate shaft 51.

[0067] The bottom of the rotating pressure block 8 is provided with a pressure block spring 82 that pushes it to move in the vertical direction; the side wall of the rotating pressure block 8 is provided with a protruding rod 83, an upper arc groove 84 and a lower arc groove 85; the top of the rotating pressure block 8 is provided with a boss 86, and two bosses 86 are provided, and the two bosses 86 are correspondingly arranged on the axis of the through hole 81. The side wall of the gate shaft 51 is provided with a shaft slide groove 511 arranged along its axial direction, and the rotating pressure block 8 is provided with a boss slider 87 that cooperates with the shaft slide groove 511, so that the rotating pressure block 8 can slide along the axial direction of the gate shaft 51, but the rotating pressure block 8 cannot rotate relative to the gate shaft 51 in the circumferential direction.

[0068] like Fig.13 As shown, the limiting assembly 9 includes a limiting rod 91 and a limiting compression spring 92. The limiting compression spring 92 pushes the end of the limiting rod 91 to abut against the upper arc groove 84 or the lower arc groove 85. An upper slope 911 and a lower slope 912 are respectively provided at the top of the limiting rod 91 near the rotating pressure block 8.

[0069] The trigger assembly 6, after the shopping cart approaches the gate 5 or passes through the gate 5, the trigger assembly 6 pushes the rotating pressure block 8 to move downward, so that the protruding rod 83 is inserted into the turntable lever 71, and the turntable lever 71 on the turntable 7 is driven to rotate to open the door, driving the protruding rod 83 to rotate, so that the rotating pressure block 8 rotates, and the rotating pressure block 8 rotates while driving the gate 5 to rotate, thereby opening the door.

[0070] The door opening drive turntable 7 can be provided with a separate motor to drive the door opening drive turntable 7 to rotate. In this embodiment, in order to save costs, the door opening drive disk is linked to the driving main shaft 21. Specifically, the door opening drive turntables 7 on the two sets of door opening assemblies are connected to a door opening drive shaft 72, and the two door opening drive turntables 7 are fixedly arranged on the door opening drive shaft 72, and a door opening small sprocket 73 is arranged on the door opening shaft. A transmission small sprocket 25 is arranged on the driving main shaft 21, and the door opening small sprocket 73 and the transmission small sprocket 25 are driven by a chain. The driving main shaft 21 drives the door opening drive shaft 72 to rotate under the action of the chain, thereby rotating the door opening drive disk.

[0071] In one embodiment, the trigger assembly 6 includes a trigger shaft 61, a trigger pressure plate 62, a trigger pressure rod 63 and a pressure plate reset torsion spring 64. The trigger pressure plate 62 is fixedly arranged on the trigger shaft 61. A shaft fixing seat 65 is arranged on the truss 1. The trigger shaft 61 passes through the shaft fixing seat 65, and the trigger shaft 61 can rotate in the shaft fixing seat 65. The pressure plate reset torsion spring 64 enables the trigger pressure plate 62 to be reset.

[0072] A trigger pressure rod 63 is fixedly arranged at both ends of the trigger shaft 61 . One end of the trigger pressure rod 63 is fixedly connected to the trigger pressure plate 62 , and the other end is provided with a pressure rod waist hole 631 . The gate shaft 51 is inserted into the pressure rod waist hole 631 .

[0073] When the wheels (front wheels or rear wheels) of the shopping cart press on the trigger pressure plate 62, the trigger pressure plate 62 rotates, driving the trigger shaft 61 to rotate, and the trigger shaft 61 drives the trigger pressure rod 63 to rotate, so that the end of the pressure rod waist hole 631 of the trigger pressure rod 63 acts on the boss 86, thereby pressing the rotating pressure block 8 downward. Of course, a cylinder can also be set separately, and when the sensor detects that the shopping cart is close to the gate 5 or away from the gate 5, the cylinder is pushed to act on the rotating pressure block 8 to press the rotating pressure block 8 downward. In this embodiment, a mechanical mechanism is used to complete the process of pressing the rotating pressure block 8 downward, which has the advantages of stable structure and low cost.

[0074] The working principle of this embodiment is as follows: when the shopping cart approaches the gate 5, when the front wheel passes over the trigger pressure plate 62, the front wheel presses down the trigger pressure plate 62, so that the trigger pressure plate 62 drives the trigger shaft 61 to rotate, and then the trigger shaft 61 drives the trigger pressure rod 63 to swing, so that the trigger pressure rod 63 presses down the boss 86 on the rotating pressure block 8.

[0075] The protruding rod 83 of the rotating pressing block 8 is located above the turntable lever 71 in the initial position, that is, the door opening driving turntable 7 rotates normally and does not contact the protruding rod 83, and the lower slope 912 of the limiting rod 91 is located in the lower arc groove 85 at this time.

[0076] When the rotating pressing block 8 moves downward under the action of the triggering pressing rod 63, the protruding rod 83 falls between the two rotating disk levers 71. At the same time, the convex edge between the lower arc groove 85 and the upper arc groove 84 on the rotating pressing block 8 pushes the lower slope 912, so that the end of the lower slope 912 of the limiting rod 91 slides from the lower arc groove 85 to the upper arc groove 84. Under the action of the limiting rod 91, the protruding rod 83 is always limited between the rotating disk levers 71 before the rotating pressing block 8 rotates. At this time, the pressing block spring 82 is compressed, and the gate torsion spring 52 is twisted and deformed.

[0077] As the door opening driving turntable 7 rotates continuously, the turntable lever 71 keeps pushing the protruding rod 83 of the rotating pressing block 8, so that the rotating pressing block 8 rotates, thereby driving the gate rotating shaft 51 to rotate, and the gate rotating shaft 51 rotates to drive the gate 5 to rotate, and the gate 5 is opened, so that the shopping cart can pass through the gate 5. During the rotation of the rotating pressing block 8, the end of the lower slope 912 slides in the upper arc groove 84.

[0078] When the gate 5 is fully opened to 90 degrees, the rotating pressing block 8 also rotates 90 degrees, and the end of the lower slope 912 also slides to the end of the lower arc groove 85, and the boss 86 also rotates 90 degrees. In the initial position, the triggering pressure rod 63 acts on the boss 86 to press the rotating pressing block 8 downward, so that the boss 86 falls into the projection range of the pressure rod waist hole 631.

[0079] When the front wheel of the shopping cart passes over the trigger pressure plate 62, the rear wheel continues to press down the trigger pressure plate 62 when passing the trigger pressure plate 62, so that the trigger pressure rod 63 is pressed down again. Since the boss 86 at this time falls within the projection range of the pressure rod waist hole 631, the trigger pressure rod 63 does not act on the rotating pressure block 8, but acts on the upper slope 911 of the limit rod 91. The horizontal projection length of the upper slope 911 is greater than the horizontal projection length of the lower slope 912.

[0080] When the triggering pressure rod 63 acts on the upper slope 911, the limiting rod 91 moves backwards continuously, so that the end of the lower slope 912 is separated from the upper arc groove 84. The pressure block spring 82 pushes the pressure block to move upward and reset, so that the protruding rod 83 is separated from between the two rotating disk levers 71, and the gate 5 is reset under the action of the gate torsion spring 52, and the gate 5 is closed again. At this time, the end of the lower slope 912 of the limiting rod 91 is abutted against the lower arc groove 85 again.

[0081] In this embodiment, by providing a door opening assembly, the power of the driving spindle 21 can be utilized to drive the turntable lever 71 to rotate, and through the cooperation of the trigger assembly 6, the gate 5 can be automatically opened and closed when the shopping cart passes through the gate 5; thereby effectively preventing customers from mistakenly entering the gate 5 and entering the escalator dedicated to shopping carts, thereby preventing the occurrence of danger.

[0082] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A large-capacity shopping cart escalator, characterized in that: include: A truss, on which a rear wheel transport track and a pallet transport track are arranged; A driving assembly includes a driving spindle, a drag chain sprocket disposed on the driving spindle, and a driving mainframe driving the drag chain sprocket to rotate; The drag chain assembly comprises a drag plate chain and a drag plate wound on a drag chain sprocket; one end of the drag plate is rotatably arranged on a rotating shaft of the drag plate chain, and the other end of the drag plate abuts against a drag plate transport track; a drag plate groove is also arranged on the drag plate; The crossbar of the shopping cart is stuck in the groove of the drag plate, the drag chain sprocket drives the drag plate chain to move, the drag plate chain drives the drag plate to move along the truss, the drag plate follows the trajectory of the drag plate transport track, adjusts the ups and downs of the drag plate, and then adjusts the angle of the shopping cart to prevent the shopping cart from interfering with the escalator.

2. The large-capacity shopping cart escalator according to claim 1 is characterized in that: The carriage is triangular in shape; the three vertices on the triangular carriage are respectively the first vertices, the second vertices and the third vertices; the first vertices are rotatably connected to the rotating shaft of the carriage chain, and the carriage groove is arranged at the second vertices; and the third vertices are provided with abutment wheels abutting against the carriage transport track.

3. The large-capacity shopping cart escalator according to claim 1 or 2, characterized in that: A movable towing hook and a resetting member for resetting the movable towing hook are arranged on one side of the drag plate groove; the cross bar of the shopping cart hits the movable towing hook, so that the movable towing hook rotates to avoid the cross arm of the shopping cart. After the cross arm of the shopping cart passes over the movable towing hook, the drag plate moves to clamp the cross arm of the shopping cart into the drag plate groove.

4. The large-capacity shopping cart escalator according to claim 3 is characterized in that: The side of the movable towing hook away from the towing plate groove is arranged as an arc surface.

5. The large-capacity shopping cart escalator according to claim 1 is characterized in that: The driving assembly also includes a main driving sprocket arranged on the driving main shaft. An output wheel is arranged at the output end of the driving main shaft. The output wheel and the main driving sprocket are driven by a chain.

6. The large-capacity shopping cart escalator according to claim 1, 2 or 5, characterized in that: Gates and door opening components for driving the gates to automatically open and close are arranged on both sides of the truss ends.

7. The large-capacity shopping cart escalator according to claim 6 is characterized in that: The door opening assembly includes: The door opening driving turntable has a plurality of turntable levers evenly distributed in the circumferential direction; A rotating pressure block is slidably arranged on the gate shaft, and a pressure block spring is arranged at the bottom of the rotating pressure block to push it to move in the vertical direction; a convex rod, an upper arc groove and a lower arc groove are arranged on the side wall of the rotating pressure block; a boss is arranged on the top of the rotating pressure block; The limiting assembly includes a limiting rod and a limiting compression spring, wherein the limiting compression spring pushes the end of the limiting rod to abut against the upper arc groove or the lower arc groove; an upper slope and a lower slope are respectively arranged at the top of the limiting rod near the rotating pressure block; Trigger assembly: after the shopping cart approaches the gate or passes through the gate, the trigger assembly pushes the rotating pressing block to move downward.

8. The large-capacity shopping cart escalator according to claim 6 is characterized in that: The trigger assembly includes a trigger pressure plate, a trigger pressure rod and a pressure plate reset torsion spring. The pressure plate reset torsion spring enables the trigger pressure plate to be reset; one end of the trigger pressure rod is fixedly connected to the trigger pressure plate, and the other end of the trigger pressure rod is provided with a pressure rod waist hole, and the gate shaft is inserted into the pressure rod waist hole.

9. The large-capacity shopping cart escalator according to claim 1, characterized in that: A small transmission sprocket is arranged on the driving main shaft, the door opening driving turntable is fixedly arranged on the door opening driving shaft, a small door opening sprocket is arranged on the door opening driving shaft, and the door opening sprocket and the transmission small sprocket are driven by a chain.

10. The large-capacity shopping cart escalator according to claim 1, characterized in that: A rotating shaft sliding groove is arranged along the axial direction of the gate rotating shaft on the side wall, and a boss sliding block matched with the rotating shaft sliding groove is arranged on the rotating pressing block.

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