Escalator device for shopping cart

Abstract

The present invention belongs to the technical field of elevator products, and specifically discloses an escalator device for a shopping cart, including an escalator truss and an escalator track, wherein an upward / downward running device is respectively installed on the escalator truss, and the running device includes a driving device, and a lower horizontal conveying chain, an inclined conveying chain, and an upper horizontal conveying chain that are symmetrically arranged with the escalator truss as the center and driven by the driving device, and each chain of the conveying chain is connected with a push rod structure that forms a conflicting contact with the upright column at the rear side of the shopping cart and can drive the shopping cart to move when the elevator goes up or down, and the horizontal projection of the inclined conveying chain partially overlaps with the end positions of the upper horizontal conveying chain and the lower horizontal conveying chain adjacent thereto, and the bottoms of the lower horizontal conveying chain, the inclined conveying chain, and the upper horizontal conveying chain are all provided with a rolling support structure supported on the escalator truss. The escalator device can effectively reduce the pressure generated by the conveying chain at the bending part, ensure the stable performance during chain transmission, and effectively improve its service life. At the same time, it is easy to disassemble and assemble, which is convenient for the maintenance and maintenance of the escalator.

Description

Technical Field

[0001] The invention belongs to the technical field of escalator products, and in particular relates to an escalator device for a shopping cart. Background Art

[0002] In the prior art, escalator devices for shopping carts generally work by transmitting through a flexible endless rotating chain. For example, the invention with publication number CN111056415A is named a shopping cart elevator, which includes a steel frame and an apron plate arranged on the steel frame, and also includes a support plate for supporting the shopping cart wheels; a transmission device for pushing the shopping cart handle to move along the support plate; the transmission device includes a transmission chain, a clamping mechanism connected to the transmission chain for clamping the shopping cart handle, a sprocket arranged on the transmission chain, and a power component for driving the sprocket. The transmission chain used in this special elevator can be bent vertically and horizontally between the chain links, but its more obvious disadvantage is that the service life of the chain is not long, because the chain will produce abnormal noise and vibration during the transmission process, mainly occurring at the bending part of the chain belt, which will squeeze and flex the chain links, and in the inclined section of the shopping cart going up and down, the locking mechanism installed on the chain will be simultaneously subjected to forces perpendicular to the chain plate and forces parallel to the chain plate, which will cause fatigue damage to the chain. In addition, this special chain has the disadvantages of high processing cost and difficult maintenance.

[0003] Therefore, it is urgent to develop a shopping cart escalator device that reduces the pressure generated by the chain at the bending part, can better ensure the stable performance during chain transmission and improve the service life. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and disclose an escalator device for a shopping cart, which can effectively reduce the pressure generated by the conveyor chain at the bending part, ensure the stable performance of the chain during transmission, effectively improve its service life, and at the same time is easy to disassemble and assemble, which is convenient for the maintenance and maintenance of the escalator.

[0005] In order to achieve the above technical objectives, the present invention is implemented according to the following technical solutions:

[0006] An escalator device for a shopping cart described in the present invention comprises an escalator truss and an escalator track, wherein the escalator truss is respectively provided with two sets of running devices for ascending and descending, wherein the running device comprises a driving device, and a linear lower horizontal conveying chain, an inclined conveying chain, and an upper horizontal conveying chain which are symmetrically arranged with the escalator truss as the center and are driven by the driving device, wherein each chain of the lower horizontal conveying chain, the inclined conveying chain, and the upper horizontal conveying chain is connected with a push rod structure which forms abutment contact with the upright column of the shopping cart and can drive the shopping cart to move when the elevator goes up or down, wherein the horizontal projection of the inclined conveying chain partially overlaps with the end positions of the upper horizontal conveying chain and the lower horizontal conveying chain adjacent thereto, and the bottoms of the lower horizontal conveying chain, the inclined conveying chain, and the upper horizontal conveying chain are respectively provided with a rolling support structure supported on the escalator truss.

[0007] As a further improvement of the above technology, the driving device includes a driving main unit installed centrally on the escalator truss, two lower gear boxes and two upper gear boxes symmetrically arranged with the escalator truss as the center, and the driving main unit is provided with two left-right symmetrical output shafts, and the two output shafts are coaxially connected to the input shafts of the two lower gear boxes.

[0008] As a further improvement of the above technology, when running upward, the lower gear box is horizontally installed on the escalator truss corresponding to the bottom position of the overlapping part of the lower horizontal conveying chain and the inclined conveying chain; when running downward, the lower gear box is installed parallel to the inclined surface of the escalator truss and corresponds to the bottom position of the overlapping part of the lower horizontal conveying chain and the inclined conveying chain.

[0009] As a further improvement of the above technology, the upper gear box includes an upper gear box top cover and an upper gear box base, three horizontally arranged cylindrical gears are vertically mounted on the upper gear box base, three bevel gears with an axis angle of 17.5° are mounted on the upper gear box base, and the adjacently arranged third cylindrical gear is coaxial with the first bevel gear, wherein the gear shaft of the first cylindrical gear is a vertical output shaft, which is coaxial with the upper end sprocket of the upper horizontal conveying chain for driving the movement of the upper horizontal conveying chain, and the gear shaft of the third bevel gear is an inclined input shaft, which is coaxial with the upper end sprocket of the inclined conveying chain to realize the transmission inside the gear box.

[0010] As a further improvement of the above technology, the lower gearbox includes a lower gearbox top cover and a lower gearbox base, three horizontally arranged cylindrical gears are vertically installed on the lower gearbox base, three bevel gears with an axis angle of 17.5° are installed on the lower gearbox base, and the third cylindrical gear arranged adjacently is coaxial with the first bevel gear, wherein the gear shaft of the first cylindrical gear is a vertical output shaft, which is coaxial with the sprocket of the lower horizontal conveying chain for driving the movement of the lower horizontal conveying chain, and the gear shaft of the third bevel gear is a lower inclined output shaft, which is coaxial with the lower end sprocket of the inclined conveying chain for driving the movement of the inclined conveying chain, and also includes a pair of bevel gear groups with an axis angle of 90° installed below the third cylindrical gear, the input end of the bevel gear group is an input shaft, and the input shaft is correspondingly connected to the output shaft of the driving main engine through a coupling.

[0011] As a further improvement of the above technology, the chain structures of the lower horizontal conveying chain, the inclined conveying chain and the upper horizontal conveying chain are the same, and all include chain brackets, a plurality of sprockets and chains. The outer link plates of the chains are connected to the inner links of the chains. The outer link plates are L-shaped bending parts. The push rod mechanism is a push rod fixedly installed on the outside of each outer link plate. When the shopping cart enters the escalator track, the left and right upright columns at the rear of the shopping cart are correspondingly engaged in the gap between the two adjacent push rods, and the push rod is a conical structure, which can facilitate the rear upright columns of the shopping cart to smoothly enter or exit the gap between the two push rods.

[0012] As a further improvement of the above technology, the rolling support structure is a support roller installed on the inner bottom of the outer link plate, the support roller is located below the chain, and the chain bracket is provided with a rolling guide rail that cooperates with the rolling of the support roller.

[0013] As a further improvement of the above technology, stainless steel wall panels are provided on both sides of the escalator track, and slots for the push rods to pass through are correspondingly provided on the wall panels.

[0014] As a further improvement of the above technology, a C-shaped guide groove is provided on the bottom of the escalator track, and a guide roller that can slide in the C-shaped guide groove is correspondingly installed on the bottom of the front side of the shopping cart.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) In the present invention, since the conveyor chain is designed to be three straight sections of a lower horizontal conveyor chain, an inclined conveyor chain, and an upper horizontal conveyor chain without a bent portion, the pressure generated by the chain at the bent portion and fatigue damage are effectively reduced, thereby ensuring the stable performance of the chain during transmission and improving its service life. In addition, the three straight conveyor chains partially overlap in horizontal projection at the adjacent end positions of each two, thereby ensuring the feasibility of escalator operation;

[0017] (2) In the present invention, since a push rod structure is provided which forms a resistance contact with the upright posts of the shopping cart and can drive the shopping cart to move when the elevator goes up or down, the push rod installed on the outer chain plate of each chain link is in resistance contact with the upright posts on the left and right sides of the shopping cart, so that the left and right sides of the shopping cart can be tightly fixed, and the stability is good;

[0018] (2) In the present invention, since a C-shaped guide groove is provided on the escalator track, a guide roller that can slide in the C-shaped guide groove is correspondingly installed at the bottom of the front side of the shopping cart to limit the left and right swing of the head of the shopping cart during the transportation process;

[0019] (2) The escalator device for a shopping cart described in the present invention has a conveyor chain of three independent linear structures. When maintenance or replacement is needed, the escalator can be removed and repaired separately, making the maintenance of the escalator convenient and the maintenance cost low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 It is a schematic structural diagram of an escalator device for a shopping cart of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the escalator device for shopping carts of the present invention when transmitting upward (without the wall guard plate);

[0023] Figure 3 It is a schematic diagram of the structure of the escalator device for shopping carts of the present invention when transmitting downward (without the wall guard plate);

[0024] Figure 4 It is a schematic diagram of the structure of the upward running device in the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the downlink running device in the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the driving device, the lower horizontal conveying chain and the inclined conveying chain in the present invention;

[0027] Figure 7 This is a schematic diagram of the appearance structure of the lower gear box;

[0028] Figure 8 is a schematic diagram of the internal structure of the lower gearbox;

[0029] Fig. 9 This is a schematic diagram of the appearance structure of the upper gear box;

[0030] Fig.10 is a schematic diagram of the internal structure of the upper gearbox;

[0031] Fig.11 It is the front view of the upper / lower horizontal conveyor chain or inclined conveyor chain;

[0032] Fig.12 is the above Fig.11 AA view;

[0033] Fig.13 It is a schematic diagram of a partial structure of the shopping cart escalator device when it is running upward;

[0034] Fig.14 It is a schematic diagram of a partial structure of an escalator device for a shopping cart when it is running downward. DETAILED DESCRIPTION

[0035] like Figures 1 to 5 As shown, an escalator device for a shopping cart according to the present invention comprises an escalator truss 10 and an escalator track 20, wherein the escalator truss 10 is respectively provided with two groups of upward and downward running devices 30, 30', wherein the upper and lower groups of running devices each comprise a driving device 31, 31', and the driving device 31, 31' drives a lower horizontal conveying chain 32, an inclined conveying chain 33, and an upper horizontal conveying chain 34 which are symmetrically arranged with the escalator truss 10 as the center. Each chain of the upper horizontal conveying chain 34 is connected with a push rod structure 40 which forms a resistance contact with the upright column of the shopping cart 70 and can drive the shopping cart 70 to move when the elevator goes up or down. The horizontal projection of the inclined conveying chain 33 partially overlaps with the end positions of the upper horizontal conveying chain 34 and the lower horizontal conveying chain 32 adjacent thereto. The bottoms of the lower horizontal conveying chain 32, the inclined conveying chain 33 and the upper horizontal conveying chain 34 are all provided with a rolling support structure 50 supported on the escalator truss 10.

[0036] For the two different operation modes of uplink and downlink (such as Figures 4 to 6 shown):

[0037] (1) The structures of the driving devices of the two modes are basically the same. Specifically, the driving devices 31, 31' include a driving main unit 35, 35' centrally mounted on the escalator truss 10, two lower gear boxes 36 / 36' and two upper gear boxes 37 symmetrically arranged around the escalator truss 10, and the driving main unit 35, 35' is provided with two left-right symmetrical output shafts, which are coaxially connected to the input shafts of the lower gear boxes 36 / 36'.

[0038] (2) The difference between the two types of driving devices is that:

[0039] When the escalator is in upward operation, the lower gear box 36 is horizontally installed on the escalator truss 10 at a bottom position corresponding to the overlapping part of the lower horizontal conveying chain 32 and the inclined conveying chain 33.

[0040] During downward movement, the lower gear box 36 ′ is installed in parallel with the inclined surface of the escalator truss 10 and corresponds to the bottom position of the overlapped portion of the lower horizontal conveying chain 32 and the inclined conveying chain 33 .

[0041] like Figure 7 , and 8, the lower gear box 36 includes a lower gear box top cover 361, a lower gear box base 362, three horizontally arranged cylindrical gears 363 are vertically mounted on the lower gear box base 362, three bevel gears 364 with an axis angle of 17.5° are mounted on the lower gear box base 362, and the third cylindrical gear arranged adjacently is coaxial with the first bevel gear, wherein the gear shaft of the first cylindrical gear is the vertical output shaft 365, which is connected to the upper end sprocket of the lower horizontal conveying chain 32 342 is coaxially used to drive the movement of the lower horizontal conveying chain 32. The gear shaft of the third bevel gear is an inclined output shaft 366, which is coaxial with the lower end sprocket of the inclined conveying chain 33 to drive the movement of the inclined conveying chain 33. In addition, a pair of bevel gear sets 367 with an axis angle of 90° are installed below the third cylindrical gear. The input end of the bevel gear set 367 is an input shaft 368, and the input shaft 368 is correspondingly connected to the output shaft of the driving main machine 35, 35' through a coupling 38.

[0042] like Fig. 9 , Fig.10 As shown, the upper gear box 37 includes an upper gear box top cover 371 and an upper gear box base 372, three horizontally arranged cylindrical gears 373 are vertically mounted on the upper gear box base 372, three bevel gears 374 with an axis angle of 17.5° are mounted on the upper gear box base 372, and the adjacently arranged third cylindrical gear is coaxial with the first bevel gear, wherein the gear shaft of the first cylindrical gear is a vertical output shaft 375, which is coaxial with the upper end sprocket 341 of the upper horizontal conveying chain 34 for driving the movement of the upper horizontal conveying chain 34, and the gear shaft of the third bevel gear is an inclined input shaft 376, which is coaxial with the upper end sprocket 331 of the inclined conveying chain 33 to realize the transmission inside the upper gear box 37.

[0043] like Fig.11 , Fig.12 As shown, the chain structures of the lower horizontal conveying chain 32, the inclined conveying chain 33, and the upper horizontal conveying chain 34 are the same, and all include a chain bracket 301, a plurality of sprockets 302, and a chain 303. The outer link plate 304 of the chain 303 is connected to the inner link of the chain. The outer link plate 304 is an L-shaped bending part. The push rod mechanism 40 is a push rod fixedly installed on the outer side of each outer link plate. When the shopping cart 70 enters the escalator track 20, the left and right upright columns 71 at the rear of the shopping cart 70 are correspondingly engaged in the gap position between the two adjacent push rods.

[0044] like Fig.12 As shown, the rolling support structure 50 is a support roller installed at the inner bottom of the outer link plate 304, the support roller is located below the chain 303, and the chain bracket 301 is provided with a rolling guide rail 3011 that cooperates with the rolling of the support roller.

[0045] like Fig.13 , Fig.14 As shown, the escalator track 20 is provided with a C-shaped guide groove 21 , and a guide roller 72 which can slide in the C-shaped guide groove 21 is correspondingly installed at the bottom of the front side of the shopping cart 70 .

[0046] Stainless steel wall panels 60 are provided on both sides of the escalator track 20 , and slots 61 for the push rod structure 40 to pass through are correspondingly provided on the wall panels 60 . The arrangement of the push rod structure 40 also avoids mutual interference with the stainless steel wall panels 60 .

[0047] The working process of the practical escalator device for shopping cart is described in detail below:

[0048] (1) During the upward movement, the shopping cart 70 enters the bottom plane of the escalator track 20, and then the shopping cart 70 is clamped by the push rod structure 40 installed on the lower horizontal conveying chain 32, and the driving host 35 sequentially drives the lower gear box 36, the lower horizontal conveying chain 32, the inclined conveying chain 33, the upper gear box 37, and the upper horizontal conveying chain 34 to complete the upward conveying process, and enables the shopping cart 70 to be smoothly output from the upper plane of the escalator track, completing the ascending process of the shopping cart 70;

[0049] (2) When the shopping cart 70 enters the top of the escalator track 20 during the downward movement, the shopping cart 70 is clamped by the push rod structure 40 installed on the upper horizontal conveying chain 34, and the driving host 35' drives the lower gear box 36', the lower horizontal conveying chain 32, the inclined conveying chain 33, the upper gear box 37, and the upper horizontal conveying chain 34 to move in sequence, and enables the shopping cart 70 to be smoothly output from the bottom plane of the escalator track, thereby completing the descending process of the shopping cart 70.

[0050] The present invention is not limited to the above-mentioned embodiments. Any changes or modifications to the present invention do not depart from the spirit and scope of the present invention. If these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also meant to include these changes and modifications.

Claims

1. An escalator device for a shopping cart, comprising an escalator truss and an escalator track, characterized in that: The escalator trusses are respectively equipped with upward / downward running devices, and the running devices include a driving device, and a linear lower horizontal conveying chain, an inclined conveying chain, and an upper horizontal conveying chain that are symmetrically arranged with the escalator truss as the center and driven by the driving device. Each chain of the lower horizontal conveying chain, the inclined conveying chain, and the upper horizontal conveying chain is connected with a push rod structure that forms a resistance contact with the upright column at the rear side of the shopping cart and can drive the shopping cart to move when the elevator goes up or down. The horizontal projection of the inclined conveying chain partially overlaps with the end positions of the upper horizontal conveying chain and the lower horizontal conveying chain adjacent thereto, and the bottoms of the lower horizontal conveying chain, the inclined conveying chain, and the upper horizontal conveying chain are all provided with a rolling support structure supported on the escalator truss; The driving device comprises a driving main unit installed on the escalator truss and arranged in the center, two lower gear boxes and two upper gear boxes arranged symmetrically with the escalator truss as the center, and the driving main unit is provided with two left-right symmetrical output shafts, and the two output shafts are coaxially connected with the input shafts of the two lower gear boxes; When running upward, the lower gear box is horizontally installed on the escalator truss corresponding to the bottom position of the overlapping part of the lower horizontal conveying chain and the inclined conveying chain; when running downward, the lower gear box is installed parallel to the inclined surface of the escalator truss and corresponds to the bottom position of the overlapping part of the lower horizontal conveying chain and the inclined conveying chain.

2. The escalator device for a shopping cart according to claim 1, characterized in that: The upper gearbox includes an upper gearbox top cover and an upper gearbox base, three horizontally arranged cylindrical gears are vertically mounted on the upper gearbox base, three bevel gears with an axis angle of 17.5° are mounted on the upper gearbox base, and the third cylindrical gear arranged adjacently is coaxial with the first bevel gear, wherein the gear shaft of the first cylindrical gear is a vertical output shaft, which is coaxial with the upper end sprocket of the upper horizontal conveying chain for driving the movement of the upper horizontal conveying chain, and the gear shaft of the third bevel gear is an inclined input shaft, which is coaxial with the upper end sprocket of the inclined conveying chain to realize the transmission inside the gearbox.

3. The escalator device for a shopping cart according to claim 1, characterized in that: The lower gearbox includes a lower gearbox top cover and a lower gearbox base, three horizontally arranged cylindrical gears are vertically installed on the lower gearbox base, three bevel gears with an axis angle of 17.5° are installed on the lower gearbox base, and the third cylindrical gear arranged adjacently is coaxial with the first bevel gear, wherein the gear shaft of the first cylindrical gear is a vertical output shaft, which is coaxial with the sprocket of the lower horizontal conveying chain for driving the movement of the lower horizontal conveying chain, the gear shaft of the third bevel gear is a lower inclined output shaft, which is coaxial with the lower end sprocket of the inclined conveying chain for driving the movement of the inclined conveying chain, and also includes a pair of bevel gear sets with an axis angle of 90° installed below the third cylindrical gear, the input end of the bevel gear set is an input shaft, and the input shaft is correspondingly connected to the output shaft of the driving main machine through a coupling.

4. The escalator device for a shopping cart according to claim 1, characterized in that: The chain structures of the lower horizontal conveyor chain, the inclined conveyor chain and the upper horizontal conveyor chain are the same, and all include a chain bracket, a plurality of sprockets and a chain. The outer link plates of the chains are connected to the inner links of the chains. The outer link plates are L-shaped bent parts. The push rod structure is a push rod fixedly installed on the outside of each outer link plate. When the shopping cart enters the escalator track, the left and right upright columns at the rear of the shopping cart are correspondingly engaged in the gap between two adjacent push rods.

5. The escalator device for a shopping cart according to claim 4, characterized in that: The push rod is a cone structure.

6. The escalator device for a shopping cart according to claim 4, characterized in that: The rolling support structure is a support roller installed at the inner bottom of the outer chain plate. The support roller is located below the chain. The chain bracket is provided with a rolling guide rail that cooperates with the support roller to roll.

7. The escalator device for a shopping cart according to claim 1, characterized in that: Stainless steel wall panels are provided on both sides of the escalator, and a plurality of slots for the push rods to pass through are correspondingly provided on the wall panels.

8. The escalator device for a shopping cart according to claim 1, characterized in that: A C-shaped guide groove is arranged at the bottom of the escalator track, and a guide roller which can slide in the C-shaped guide groove is correspondingly installed at the bottom of the front side of the shopping cart.

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