An up-and-down integrated shopping cart escalator

Abstract

The application discloses an up-and-down integrated shopping cart escalator, which comprises a traction track, a driving chain arranged on the traction track, a traction unit connected to the driving chain and a shopping cart connected to the traction unit, and a rotating sleeve arranged on the traction unit and connected to a cross rod of the shopping cart. When the shopping cart is connected to the traction unit, the shopping cart can rotate around the cross rod. The up-and-down integrated shopping cart escalator can improve the fixing effect of the shopping cart, adopt the same traction mode on the up-and-down escalator during installation, reduce the production cost and facilitate user use.

Description

Technical Field

[0001] This invention relates to the field of escalator technology, and more particularly to an automatic shopping cart escalator that integrates both upward and downward movement. Background Technology

[0002] Shopping cart escalators have become increasingly popular in recent years. They are typically installed in supermarkets, often alongside escalators. While escalators transport passengers up and down, shopping cart escalators are solely for transporting shopping carts. Currently, common shopping cart escalator systems utilize special shaped chains connected to matching devices on the shopping carts. The carts connect to the chain, and the chain's cyclical movement propels the carts. Therefore, shopping carts must be compatible with the escalator; standard shopping carts are not universally compatible, increasing procurement costs.

[0003] For example, publication number "CN118239360A" discloses "a shopping cart escalator conveying system," which includes a truss, a rear wheel transport frame, a first chain, a drive assembly, and a fixing assembly. The truss has guide rails, and the first chain is slidably connected inside the guide rails. The first chain is connected to the drive assembly, which is located inside the truss. The fixing assembly is connected to the first chain, and the rear wheel transport frame is connected above the truss. The fixing assembly includes positioning blocks, and both ends of the first chain are rotatably connected to the positioning blocks. However, in practical applications, this type of device can only fix the wheels of the shopping cart. Because the shopping cart wheels can rotate and change direction, the fixing effect is poor, and different traction methods are needed on the ascending and descending escalators to overcome the different directional movement tendencies of the shopping cart. Summary of the Invention

[0004] In view of the problems mentioned in the background art, such as the poor fixing effect of the existing technology and the need to use different installation methods on the up and down escalators, the present invention provides an integrated shopping cart escalator for both directions, which improves the fixing effect of the shopping cart. At the same time, during installation, the same traction method can be used on both the up and down escalators, reducing production costs and making it more convenient for users.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] An escalator that integrates both upward and downward movement of shopping carts includes:

[0007] The traction track includes an upward track and a downward track;

[0008] A drive chain mounted on the traction rail;

[0009] A traction unit, which is connected to a drive chain and to a shopping cart;

[0010] A rotating sleeve is mounted on the traction unit and is engaged with the crossbar of the shopping cart.

[0011] When the shopping cart is connected to the traction unit, the shopping cart can rotate around the crossbar.

[0012] In existing technologies, the method of moving a shopping cart via a drive chain typically involves installing a mechanism on the drive chain to fix the cart's guide wheels. This allows the cart to be secured when it moves onto the drive chain, and then move synchronously via the drive chain. However, while this type of drive system requires fixing the guide wheels, these are relatively movable components. To achieve stable fixation, the guide wheels need to be designed accordingly. Since there are four guide wheels, two synchronously moving drive chains are needed to improve the evenness of wheel fixation, increasing costs. Furthermore, because the driving force is connected to the guide wheels, but the guide wheels are located at a low position, far from the cart's center of gravity, the overall stability of the cart is poor during use. Additionally, because the guide wheels can roll and rotate circumferentially, the connection stability between the guide wheels and the drive chain is also poor. Therefore, the shopping cart faces significant risks during operation and is prone to substantial damage. Furthermore, the shopping cart's power direction differs during upward and downward movements, meaning its movement trend varies. Therefore, the connection between the guide wheels and the drive chain needs to be configured accordingly. Generally, when the shopping cart is moving upwards, the drive chain needs to abut the guide wheels from the rear, while when it's moving downwards, the drive chain needs to abut the guide wheels from the front. This necessitates setting up different drive chains for bidirectional elevators, thus increasing production costs.

[0013] In this application, a drive chain is installed on a traction track, with a drive component inside the track. This drive component rotates the drive chain, and a traction unit is mounted on the drive chain. The rotation of the drive chain synchronously moves the traction unit. Specifically, the drive chain propels the shopping cart by connecting a rotating sleeve on the traction unit to a crossbar on the shopping cart. Driving the crossbar moves the entire shopping cart. Because the rotating sleeve connects to the crossbar, only one drive chain is needed. The drive chain connects to the middle of the crossbar, allowing the cart to move as a whole. This method, by connecting only to the middle of the crossbar, ensures uniform traction of the shopping cart, thus reducing installation costs. Furthermore, since the crossbar can rotate within the rotating sleeve, it can connect to the sleeve at any angle. This means it can connect to the sleeve whether the shopping cart is tilted upwards or downwards. Because the shopping cart can rotate freely relative to the rotating sleeve via the crossbar, it can accommodate different angles of the crossbar when moving upwards, horizontally, or downwards. Simultaneously, because the rotating sleeve has a sleeve-like structure, connecting it to the crossbar allows the sleeve to wrap around the crossbar. During upward movement, the crossbar abuts at different positions via the rotating sleeve, ensuring a smooth and secure connection. It can achieve upward pulling action, providing a traction and lifting effect for the shopping cart; during downward movement, it can limit the downward movement tendency of the shopping cart by rotating the sleeve, providing a limiting constraint effect for the shopping cart, thereby keeping the shopping cart and drive chain moving synchronously; therefore, during both upward and downward movements, the shopping cart can adapt to the slope and inclination of the upward and downward movement by rotating the crossbar, so that the upward and downward traction rails only need to be set with the same specifications, thereby reducing installation costs, and making it easier for users to understand during use, without having to consider the need to change the connection method between the shopping cart and the drive chain during upward movement.

[0014] Preferably, the drive chain includes several links, all of which are rotatably connected to each other. Each link includes a chain plate, and the traction unit is connected to the chain plate. The drive chain is divided into several links, which are rotatably connected. The rotation of the links allows the drive chain to rotate, ensuring that the drive chain can connect to the driving components for cyclic rotation. The chain plates are mounted on the links, and the traction unit is mounted on these plates, ensuring that the traction unit does not affect the rotation between the links.

[0015] Preferably, the rotating sleeve includes a connecting opening, through which the crossbar is connected to the rotating sleeve. The connecting opening on the rotating sleeve allows the crossbar to be placed inside the rotating sleeve, facilitating the detachment and connection of the crossbar.

[0016] Preferably, a travel rail is provided on the side of the traction rail, the traction unit is connected to the crossbar at the front of the shopping cart, and the rear wheels of the shopping cart are in contact with the travel rail. Since the traction rail needs to stably pull the shopping cart, it is positioned in the middle of the entire shopping cart transport track to improve the uniformity of traction. Therefore, travel rails are also provided on both sides of the traction rail, and the smoothness of pulling the shopping cart is improved by the travel rails contacting the guide wheels of the shopping cart. In this application, the traction unit can be connected to the front crossbar of the shopping cart or the rear crossbar. Preferably, to ensure the stability of the shopping cart and the ease of disengaging and engaging the shopping cart, the front crossbar is connected to a rotating sleeve, and the rear wheels are connected to the travel rail. This ensures convenient operation of the shopping cart and its stability and smoothness of movement on the track. The guide wheel on the side of the crossbar connected to the rotating sleeve can be suspended or in contact with the travel rail.

[0017] Preferably, the traction unit is equipped with a locking unit, and the traction track includes an unlocking unit. When the crossbar is connected to the rotating sleeve, the locking unit locks the crossbar inside the rotating sleeve. When the traction unit moves to the unlocking unit, the unlocking unit unlocks the locking unit, allowing the crossbar to disengage from the rotating sleeve. Since the shopping cart is connected to the traction unit and the crossbar is connected to the rotating sleeve through a connection opening, it is necessary to lock the crossbar to prevent it from disengaging from the rotating sleeve during cart operation. An unlocking unit is also required, located at specific positions on the traction track, typically at the beginning and end points. This allows the shopping cart to unlock the locking unit when it reaches these positions, enabling the crossbar to disengage from the connection opening of the rotating sleeve.

[0018] Preferably, the locking unit includes a stop block and a locking element. The stop block includes a pressure rod and a stop bar, and the locking element includes a locking rod and a lever. When the crossbar is connected to the rotating sleeve, the crossbar presses down on the pressure rod, which drives the stop bar to rotate. The stop bar is located above the crossbar, and the pressure rod engages with the locking rod. The locking unit includes a stop block and a locking element, wherein the main function of the stop block is to lock the crossbar on the shopping cart using the pressure rod and the stop bar. Furthermore, the stop block is rotatably connected to the traction unit, and the pressure rod and the stop rod are staggered and form an "L" shape. In the initial state, the pressure rod is located inside the rotating sleeve and below the connecting opening, while the stop rod is not inside the rotating sleeve. Therefore, when the crossbar is placed into the connecting sleeve, the crossbar will press down on the pressure rod, causing the pressure rod to drive the entire stop block to rotate. Due to the compression of the crossbar, the pressure rod rotates to a position where it is disengaged from the rotating sleeve. Thus, the stop rod is located inside the rotating sleeve and above the crossbar through rotation. At this time, since the rotating block is not in a limited position, the stop block does not have a locking and limiting function, allowing the crossbar to still disengage in this state. Therefore, this application also includes a locking component, which comprises a locking rod and a lever. The locking rod and lever can lock the stop block. The locking rod and lever are arranged in an "L" shape, similar to the stop block, with the locking rod at the top and the lever at the bottom. When the pressure rod rotates, it can engage with the locking rod, thereby locking and limiting the pressure rod and fixing the crossbar in the rotating sleeve. The lever connects to the locking rod, and by moving the lever, the locking rod can be driven to rotate synchronously. After the locking rod rotates, it can release the engagement with the pressure rod, thereby unlocking. At this time, the pressure rod and the stop block can rotate adaptively as the crossbar is disengaged.

[0019] Preferably, the unlocking unit includes a protruding section disposed on the traction rail. When the traction unit moves to the protruding section, the protruding section actuates the lever, which drives the locking lever to rotate. The pressure lever disengages from the locking lever to unlock, and the crossbar disengages from the rotating sleeve. To ensure the safety of the shopping cart during traction, the protruding section is positioned at specific locations, at the beginning and end of the traction rail. The protruding section is a partially upward-protruding portion. Since the shopping cart needs to pass through the protruding section when entering the traction rail, and the shopping cart travels forward, the protruding section exerts a backward pushing force on the lever during this process, thereby causing the lever to rotate and unlocking the locking lever from the pressure lever.

[0020] Preferably, the raised section includes a starting section and an ending section, with a flat section between the starting and ending sections. The starting and ending sections are guide slopes that smoothly transition into the flat section. Because the raised section has a starting and ending section, and the starting and ending sections are connected to the flat section, a lever-pulling action can be generated through the starting and ending sections. Since the raised section contains the flat section, after unlocking through the starting section, the lever continues to be pulled along the flat section, remaining in a constantly unlocked state. This allows the user sufficient time to separate the shopping cart from the traction unit within this area.

[0021] Preferably, both the stop and the locking component are rotatably connected to the locking unit, and an elastic reset component is provided between the stop and the locking unit. The elastic reset components on the stop and the locking component enable automatic reset of both components. This allows the stop to quickly reset after the crossbar disengages from the rotating sleeve, thereby resetting the pressure bar back into the rotating sleeve. The stop bar then disengages from the rotating sleeve, facilitating smooth engagement of the shopping cart's crossbar into the rotating sleeve the next time. Simultaneously, it resets the locking component, rotating the locking bar back to a suitable position, ensuring that the next pressure bar can engage with the locking bar at a specific position.

[0022] Preferably, the locking rod is provided with a locking block. When the pressure rod rotates downward, the pressure rod abuts against the locking block. After the pressure rod rotates to its final position, the pressure rod and the locking block are engaged. The locking block is located on the side of the locking rod facing the pressure rod and protrudes upward. The locking block also has a guide ramp. Similarly, a ramp is also provided at the end of the pressure rod, so that during rotation, the pressure rod can contact the ramp on the locking block through the ramp at the end and drive the locking rod to deflect slightly, thereby moving the locking block downward and ensuring smooth movement of the pressure rod. Subsequently, when the pressure rod disengages from the locking block, the locking rod resets under the action of the reset component. The locking block engages with the pressure rod and restricts the reset of the pressure rod, achieving a locking effect.

[0023] The beneficial effects of this invention are as follows:

[0024] (1) During the upward and downward movement, the shopping cart can adapt to the slope of the upward and downward movement by rotating the crossbar, so that the traction rails of the upward and downward movement only need to be set with the same specifications, thereby reducing the installation cost and making it easier for users to understand during use.

[0025] (2) Setting a locking unit and an unlocking unit can ensure the stability of the connection between the shopping cart and the traction unit and prevent the shopping cart from detaching. At the same time, the unlocking unit at a specific position can quickly unlock the shopping cart from the traction unit, making it easy to detach. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the upward track of the present invention.

[0027] Figure 2 This is a schematic diagram of the downward trajectory of the present invention.

[0028] Figure 3 This is a schematic diagram of the overall structure of the present invention.

[0029] Figure 4 This is a schematic diagram of the traction unit in Example 1.

[0030] Figure 5 This is a partial structural schematic diagram of the present invention.

[0031] Figure 6 This is a schematic diagram of the first structure of Embodiment 2.

[0032] Figure 7 This is a schematic diagram of the traction unit in Embodiment 2.

[0033] Figure 8 This is a schematic diagram of the second structure of Embodiment 2.

[0034] Figure 9 yes Figure 8 A schematic diagram of the unlocking unit.

[0035] In the picture:

[0036] 1. Traction rail;

[0037] 2 drive chain, 21 chain links, 22 chain plates;

[0038] 3. Traction unit, 31. Rotating sleeve, 32. Connecting opening, 33. Locking unit, 34. Unlocking unit, 35. Stop block, 351. Pressure rod, 352. Stop lever, 36. Locking component, 361. Locking rod, 362. Lever, 363. Locking block, 37. Elastic reset component.

[0039] 4 shopping carts, 41 horizontal bars;

[0040] 5. Protruding section, 51. Starting section, 52. Ending section, 53. Leveling section, 54. Guide slope. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] Example 1:

[0043] like Figure 1 , 2 As shown in Figures 3, 4, and 5, an escalator integrating an up-and-down shopping cart includes:

[0044] Traction track 1, which includes an up track and a down track;

[0045] Drive chain 2 is installed on traction rail 1;

[0046] The traction unit 3 is connected to the drive chain 2 and the traction unit 3 is connected to the shopping cart 4;

[0047] Rotating sleeve 31, the rotating sleeve 31 is mounted on the traction unit 3, and the rotating sleeve 31 is engaged with the crossbar 41 of the shopping cart 4;

[0048] When the shopping cart 4 is connected to the traction unit 3, the shopping cart 4 can rotate around the crossbar 41.

[0049] In existing technologies, the method of moving a shopping cart via a drive chain 2 typically involves installing a mechanism on the drive chain 2 to fix the guide wheels of the shopping cart 4. This allows the shopping cart 4 to be secured by the drive chain 2 when it moves onto it, and then move synchronously via the drive chain 2. However, in this type of drive device, the guide wheels of the shopping cart 4 are relatively movable components. To achieve stable fixation, corresponding design matching is required for the guide wheels. Since there are four guide wheels on the shopping cart 4, two synchronously moving drive chains 2 are needed to improve the uniformity of wheel fixation, increasing costs. Furthermore, because the driving force is connected to the guide wheels, but the guide wheels are located at a low position, far from the center of gravity of the shopping cart 4, the overall stability of the shopping cart 4 is poor during use. Moreover, because the guide wheels can roll and rotate circumferentially, the connection stability between the guide wheels and the drive chain 2 is poor. Therefore, the shopping cart 4 faces significant risks during operation and is prone to considerable damage. Meanwhile, the direction of power for the shopping cart 4 differs during its upward and downward movements, meaning its movement trend varies. Therefore, the connection between the guide wheel and the drive chain 2 needs to be configured accordingly. Generally, when the shopping cart 4 is moving upwards, the drive chain 2 needs to abut the guide wheel from the rear, while when the shopping cart 4 is moving downwards, the drive chain 2 needs to abut the guide wheel from the front. This necessitates setting different drive chains 2 when designing a bidirectional elevator, thus increasing production costs.

[0050] In this embodiment, a drive chain 2 is installed on the traction track 1, and a drive component is installed inside the traction track 1. The drive component drives the drive chain 2 to rotate. A traction unit 3 is installed on the drive chain 2, and the rotation of the drive chain 2 synchronously drives the traction unit 3 to move. In this embodiment, the drive chain 2 drives the shopping cart 4 by rotating a sleeve 31 on the traction unit 3 and connecting it to a crossbar 41 on the shopping cart 4. The crossbar 41 drives the entire shopping cart 4 to move. Since the rotating sleeve 31 is connected to the crossbar 41, only one drive chain 2 is needed during use. The drive chain 2 can drive the entire shopping cart 4 to move by connecting the rotating sleeve 31 on the drive chain 2 to the middle of the crossbar 41. This driving method, which only connects to the middle of the crossbar, can ensure uniform traction of the shopping cart, thus reducing the installation cost. Furthermore, since the crossbar 41 can rotate within the rotating sleeve 31, the shopping cart 4 can adapt to the slope of the upward and downward movement by rotating the crossbar 41. This allows the traction rails 1 for both upward and downward movement to be set to the same specifications, thereby reducing installation costs. It also makes it easier for users to understand during use, without having to consider changing the connection between the shopping cart 4 and the drive chain 2 during the upward movement.

[0051] like Figure 4 As shown, the drive chain 2 includes several chain links 21, which are rotatably connected to each other. Each chain link 21 includes a chain plate 22, and the traction unit 3 is connected to the chain plate 22. The drive chain 2 is divided into several chain links 21, which are rotatably connected to each other. The rotation of the chain links 21 enables the drive chain 2 to rotate, thus ensuring that the drive chain 2 can connect to the drive components for cyclic rotation. The chain plate 22 is provided on the chain link 21, and the traction unit 3 is placed on the chain plate 22, so that the traction unit 3 does not affect the mutual rotation between the chain links 21.

[0052] like Figure 4 As shown, the rotating sleeve 31 includes a connecting opening 32, through which the crossbar 41 is connected to the rotating sleeve 31. The connecting opening 32 on the rotating sleeve 31 allows the crossbar 41 to be placed inside the rotating sleeve 31, facilitating the detachment and connection of the crossbar 41.

[0053] like Figure 5As shown, a travel track is provided on the side of the traction track 1, and the traction unit 3 is connected to the crossbar 41 on the front side of the shopping cart 4. The rear wheels of the shopping cart 4 are in contact with the travel track. Since the traction track 1 needs to stably pull the shopping cart 4, it is located in the middle of the entire transport track of the shopping cart 4 to improve the uniformity of traction. Therefore, travel tracks are also provided on both sides of the traction track 1. The smoothness of pulling the shopping cart 4 can be improved by the contact between the travel tracks and the guide wheels of the shopping cart 4. In this embodiment, the traction unit 3 can be connected to the front crossbar 41 of the shopping cart 4, or it can be connected to the rear crossbar 41 of the shopping cart 4. Preferably, in order to ensure the stability of the shopping cart 4 and the convenience of disengaging and engaging the shopping cart 4, the front crossbar 41 of the shopping cart 4 is connected to the rotating sleeve 31, and the rear wheel of the shopping cart 4 is connected to the travel track. This can ensure the convenient operation of the shopping cart 4 and the stability and smoothness of its movement on the track. The guide wheel on the side of the crossbar connected to the rotating sleeve 31 can be in a suspended state or it can be in contact with the travel track.

[0054] This embodiment, through the aforementioned structural features, allows the shopping cart to adapt to the slope and inclination of the upward and downward movement by rotating the crossbar during the upward and downward movement. This means that the traction tracks for both upward and downward movement only need to be set to the same specifications, thereby reducing installation costs and making it easier for users to understand during use.

[0055] Example 2:

[0056] like Figure 6 , 8 As shown, unlike Embodiment 1, the traction unit 3 in this embodiment is equipped with a locking unit 33, and the traction track 1 includes an unlocking unit 34. When the crossbar 41 is connected to the rotating sleeve 31, the locking unit 33 locks the crossbar 41 inside the rotating sleeve 31. When the traction unit 3 moves to the unlocking unit 34, the unlocking unit 34 unlocks the locking unit 33, and the crossbar 41 can be released from the rotating sleeve 31. Since the shopping cart 4 is connected to the traction unit 3 and the crossbar 41 is connected to the rotating sleeve 31 through the connection opening 32, it is necessary to lock the crossbar of the shopping cart 4 to prevent it from detaching from the rotating sleeve 31 during the operation of the shopping cart 4. At the same time, an unlocking unit 34 is required. The unlocking unit 34 is set at a specific position on the traction track 1, generally at the beginning and end positions of the traction track 1. This allows the shopping cart 4 to unlock the locking unit 33 through the unlocking unit 34 when it reaches that position, thereby allowing the crossbar 41 of the shopping cart 4 to detach from the connection opening 32 of the rotating sleeve 31.

[0057] like Figure 6 , 7As shown, the locking unit 33 includes a stop block 35 and a locking member 36. The stop block 35 includes a pressure rod 351 and a stop lever 352. The locking member 36 includes a locking lever 361 and a lever 362. When the crossbar 41 is connected to the rotating sleeve 31, the crossbar 41 presses down on the pressure rod 351. The pressure rod 351 drives the stop lever 352 to rotate. The stop lever 352 is located above the crossbar 41, and the pressure rod 351 engages with the locking lever 361. The locking unit includes a stop block 35 and a locking member 36. The main function of the stop block 35 is to lock the crossbar 41 on the shopping cart 4 using the pressure rod 351 and the stop lever. Furthermore, the stop block 35 is rotatably connected to the traction unit 3, and the pressure rod 351 and the stop rod 352 are staggered and form an "L" shape. In the initial state, the pressure rod 351 is located inside the rotating sleeve 31 and below the connecting opening 32, while the stop rod 352 is not inside the rotating sleeve 31. Therefore, when the crossbar 41 is placed into the connecting sleeve, the crossbar 41 will press down on the pressure rod 351, causing the pressure rod 351 to drive the stop block 35 to rotate as a whole. Due to the compression of the crossbar 41, the pressure rod 351 rotates to the position of disengaging from the rotating sleeve 31. Therefore, the stop rod 352 is then rotated and located inside the rotating sleeve 31 and above the crossbar 41. At this time, since the rotating block is not in a limited state, the stop block 35 does not have a locking and limiting function, so that the crossbar 41 can still disengage from the rotating sleeve 31 in this state. Therefore, in this embodiment... The device also includes a locking component 36, which comprises a locking rod 361 and a lever 362. The locking rod 361 and lever 362 can lock the stop block 35. The locking rod 361 and lever 362 are arranged in an "L" shape, similar to the stop block 35, with the locking rod 361 at the top and the lever 362 at the bottom. When the pressure rod 351 rotates, it can engage with the locking rod 361, thereby locking and limiting the pressure rod 351 and fixing the crossbar 41 in the rotating sleeve 31. The lever 362 is connected to the locking rod 361. By moving the lever 362, the locking rod 361 can be driven to rotate synchronously. After the locking rod 361 rotates, it can release the engagement with the pressure rod 351, thereby unlocking the device. At this time, the pressure rod 351 and the stop rod 352 can rotate adaptively as the crossbar 41 is disengaged.

[0058] like Figure 8 , 9As shown, the unlocking unit 34 includes a protruding section 5 disposed on the traction rail 1. When the traction unit 3 moves to the protruding section 5, the protruding section 5 actuates the lever 362, which drives the locking lever 361 to rotate. The pressure lever 351 disengages from the locking lever 361 to unlock, and the crossbar can disengage from the rotating sleeve 31. To ensure the safety of the shopping cart 4 during the traction process, the protruding section 5 is set at a specific position. The protruding section 5 is set at the beginning and end positions of the traction rail 1, where the protruding section 5 is a partially upward protruding part. Since the shopping cart 4 needs to pass through the protruding section 5 when entering the traction rail 1, and the direction of travel of the shopping cart 4 is forward, the protruding section 5 will generate a backward pushing force on the lever 362 during this process, thereby driving the lever 362 to rotate, and thus realizing the unlocking between the locking lever 361 and the pressure lever 351.

[0059] like Figure 9 As shown, the protruding section 5 includes a starting section 51 and an ending section 52, with a flat section 53 disposed between the starting section 51 and the ending section 52. The starting section 51 and the ending section 52 are guide slopes 54 that smoothly transition to the flat section 53. Since the protruding section 5 has a starting section 51 and an ending section 52, and the starting section 51 and the ending section 52 are connected to the flat section 53, a toggle lever 362 can be activated via the starting section 51 and the ending section 52. Because the protruding section 5 has the flat section 53, after unlocking via the starting section 51, the lever 362 continues to receive the toggle effect from the flat section 53. The lever 362 is always in an unlocked state on the flat section 53, thus the locking lever 361 is continuously unlocked, allowing the user sufficient time to separate the shopping cart 4 from the traction unit 3 within this area.

[0060] like Figure 7 As shown, both the stop block 35 and the locking member 36 are rotatably connected to the locking unit 33. An elastic reset member 37 is provided between the stop block 35, the locking member 36, and the locking member 36 unit. In this embodiment, the elastic reset member 37 is a torsion spring. By using the elastic reset member 37 on the stop block 35 and the locking member 36, the automatic reset effect of the stop block 35 and the locking member 36 can be achieved. This allows the stop block 35 to quickly reset after the crossbar 41 disengages from the rotating sleeve 31, thereby resetting the pressure bar 351 back into the rotating sleeve 31. The stop lever 352 then disengages from the rotating sleeve 31, facilitating the smooth engagement of the crossbar 41 of the shopping cart 4 into the rotating sleeve 31 next time. Simultaneously, it can drive the locking member 36 to reset, rotating the locking lever 361 back to a suitable position, so that the next pressure bar 351 can engage with the locking lever 361 at a specific position.

[0061] like Figure 7 As shown, a locking block 363 is provided on the locking rod 361. When the pressing rod 351 rotates downward, the pressing rod 351 abuts against the locking block 363. When the pressing rod 351 rotates to the position, the pressing rod 351 and the locking block 363 are engaged and connected. A locking block 363 is provided on the locking rod 361, with the locking block 363 located on the side of the locking rod 361 facing the pressure rod 351. The locking block 363 is convex upward and has a guide slope. Similarly, a slope is also provided at the end of the pressure rod 351, so that the pressure rod 351 can contact the slope on the locking block 363 through the slope at the end during rotation, causing the locking rod 361 to deflect slightly, thereby moving the locking block 363 downward and ensuring the smooth movement of the pressure rod 351. Subsequently, when the pressure rod 351 disengages from the locking block 363, the locking rod 361 is reset under the action of the reset component. The locking block 363 engages with the pressure rod 351 and restricts the reset of the pressure rod 351, thus achieving the locking effect.

[0062] This embodiment, by setting a locking unit and an unlocking unit, can ensure the stability of the connection between the shopping cart and the traction unit, preventing the shopping cart from detaching. At the same time, the unlocking unit at a specific position can quickly unlock the shopping cart from the traction unit, making it easy to detach.

[0063] This embodiment also includes:

[0064] Traction track 1, which includes an up track and a down track;

[0065] Drive chain 2 is installed on traction rail 1;

[0066] The traction unit 3 is connected to the drive chain 2 and the traction unit 3 is connected to the shopping cart 4;

[0067] Rotating sleeve 31, the rotating sleeve 31 is mounted on the traction unit 3, and the rotating sleeve 31 is engaged with the crossbar 41 of the shopping cart 4;

[0068] When the shopping cart 4 is connected to the traction unit 3, the shopping cart 4 can rotate around the crossbar 41;

[0069] The drive chain 2 includes a plurality of chain links 21, each chain link being rotatably connected to the others, each chain link 21 including a chain plate 22, and the traction unit 3 being connected to the chain plate 22;

[0070] The rotating sleeve 31 includes a connecting opening 32, and the crossbar 41 is connected to the rotating sleeve 31 through the connecting opening 32.

[0071] The traction track 1 has a travel track on its side, the traction unit 3 is connected to the crossbar 41 on the front side of the shopping cart 4, and the rear wheels of the shopping cart 4 are in contact with the travel track.

[0072] In this embodiment, a drive chain 2 is installed on the traction track 1, and a drive component is installed inside the traction track 1. The drive component drives the drive chain 2 to rotate. A traction unit 3 is installed on the drive chain 2, and the rotation of the drive chain 2 synchronously drives the traction unit 3 to move. In this embodiment, the drive chain 2 drives the shopping cart 4 by rotating a sleeve 31 on the traction unit 3 and connecting it to a crossbar 41 on the shopping cart 4. The crossbar 41 drives the entire shopping cart 4 to move. Since the rotating sleeve 31 is connected to the crossbar 41, only one drive chain 2 is needed during use. The drive chain 2 can drive the entire shopping cart 4 to move by connecting the rotating sleeve 31 on the drive chain 2 to the middle of the crossbar 41. This driving method, which only connects to the middle of the crossbar, can ensure uniform traction of the shopping cart, thus reducing the installation cost. Furthermore, since the crossbar 41 can rotate within the rotating sleeve 31, the shopping cart 4 can adapt to the slope and inclination during the up and down movement by rotating the crossbar 41. This allows the traction rails 1 for both up and down movements to be set to the same specifications, reducing installation costs and making it easier for users to understand during use, without needing to consider changing the connection between the shopping cart 4 and the drive chain 2 during the up movement. The drive chain 2 is divided into several links 21, which are rotatably connected. The rotation of the links 21 enables the drive chain 2 to rotate, ensuring that the drive chain 2 can connect to the drive components for cyclic rotation. Link plates 22 are provided on the links 21, and the traction unit 3 is placed on the link plates 22, so that the traction unit 3 does not affect the mutual rotation between the links 21. The connecting opening 32 on the rotating sleeve 31 allows the crossbar 41 to be placed inside the rotating sleeve 31, facilitating the disengagement and connection of the crossbar 41. Since the traction rail 1 needs to stably pull the shopping cart 4, it is positioned in the middle of the entire transport track for the shopping cart 4, thereby improving the uniformity of traction. Therefore, travel rails are also provided on both sides of the traction rail 1. These travel rails contact the guide wheels of the shopping cart 4, thus improving the smoothness of traction. In this embodiment, the traction unit 3 can be connected to either the front crossbar 41 or the rear crossbar 41 of the shopping cart 4. Preferably, to ensure the stability of the shopping cart 4 and the ease of disengaging and engaging, the front crossbar 41 of the shopping cart 4 is connected to the rotating sleeve 31, while the rear wheels of the shopping cart 4 are connected to the travel rails. This ensures convenient operation of the shopping cart 4 and its stability and smoothness of movement on the track. The guide wheel on the side of the crossbar connected to the rotating sleeve 31 can be suspended in the air or in contact with the travel rails.

Claims

1. An escalator for up-and-down integrated shopping carts, characterized by, The utility model relates to a shopping trolley system, which comprises: a traction track comprising an upper track and a lower track; a drive chain arranged on the traction track; a traction unit connected to the drive chain, the traction unit being connected to a shopping trolley; a rotating sleeve arranged on the traction unit, the rotating sleeve being engaged with a crossbar of the shopping trolley; when the shopping trolley is connected to the traction unit, the shopping trolley can rotate around the crossbar; a locking unit arranged on the traction unit, the locking unit locking the crossbar in the rotating sleeve when the crossbar is connected to the rotating sleeve, the locking unit comprising a blocking piece and a locking piece, the blocking piece comprising a pressing rod and a stop rod, the locking piece comprising a locking rod and a pushing rod, when the crossbar is connected to the rotating sleeve, the crossbar presses down the pressing rod, the pressing rod drives the stop rod to rotate, the stop rod is above the crossbar, and the pressing rod is engaged with the locking rod.

2. The escalator for an up-and-down integrated shopping cart according to claim 1, wherein the drive chain comprises a plurality of chain links, each chain link being rotatably connected to each other, and each chain link comprising a chain plate, the traction unit being connected to the chain plate.

3. The escalator for an up-and-down integrated shopping cart according to claim 1, wherein the rotating sleeve comprises a connecting opening, the crossbar being connected to the rotating sleeve through the connecting opening.

4. The escalator for an up-and-down integrated shopping cart according to claim 1, wherein the traction track is provided with a running track on the side, the traction unit being connected to the crossbar at the front side of the shopping trolley, and the rear wheel of the shopping trolley being in contact with the running track.

5. The escalator of any one of claims 1 to 4, wherein, the traction track comprises an unlocking unit, the unlocking unit unlocking the locking unit when the traction unit moves to the unlocking unit, and the crossbar being able to be pulled out of the rotating sleeve.

6. The escalator with an integrated up-and-down shopping cart according to claim 5, wherein the unlocking unit comprises a protruding section arranged on the traction track, the protruding section pushing the pushing rod when the traction unit moves to the protruding section, the pushing rod driving the locking rod to rotate, the pressing rod being pulled out of the locking rod to be unlocked, and the crossbar being able to be pulled out of the rotating sleeve.

7. An escalator for an up-and-down integrated shopping cart according to claim 6, wherein the protruding section comprises a starting section and an ending section, a flat section being arranged between the starting section and the ending section, and the starting section and the ending section being guide inclined surfaces smoothly connected to the flat section.

8. The escalator of claim 1, wherein the upper and lower shopping carts are integrated. the blocking piece and the locking piece are rotatably connected to the locking unit, and the blocking piece and the locking piece are provided with elastic return pieces between the locking piece and the locking unit.

9. The escalator of claim 1, wherein the upper and lower shopping carts are integrated. the locking rod is provided with a locking block, the pressing rod abutting against the locking block when the pressing rod rotates downward, and the pressing rod being engaged with the locking block when the pressing rod is rotated to the position.

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