Shopping cart conveying chain

Abstract

The utility model discloses a shopping cart conveying chain which aims at solving the problems that in the prior art, a shopping cart conveying chain and a conventional shopping cart are not universal, a specific shopping cart needs to be arranged, and the purchase cost is increased. And meanwhile, the crosspieces of the shopping cart are easy to run off from the separation blades, so that the safety is poor. The technical problem is solved through the following technical scheme that the chain comprises a plurality of chain plates which are hinged with one another; the dragging plates are arranged on the chain plate in a scattered mode, and hook grooves are formed in the dragging plates. A check block is rotationally arranged at an opening of the hook groove, a lock rod is rotationally connected to the side, close to the chain plate, of the hook groove, and reset pieces are arranged on the check block and the lock rod so that the check block and the lock rod can be kept in a reset state. A crosspiece of the shopping cart is clamped into the hook groove, the check block rotates to be matched with the lock rod, the lock rod locks the check block, and the crosspiece is locked in the hook groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to shopping cart conveying technical field, more specifically, it relates to a shopping cart conveying chain. BACKGROUND

[0002] Shopping cart escalator has been popular in recent years, and is usually arranged in parallel with an escalator in a shopping mall, the escalator is used for the up and down conveying of passengers, and the shopping cart escalator is only used for the up and down conveying of shopping carts in the supermarket. At present, the common shopping cart escalator conveying device is a special-shaped chain cooperating with a matching connecting device arranged on the shopping cart, the shopping cart can be connected with the chain, and the up and down conveying of the shopping cart is driven by the up and down circulation of the chain. Therefore, the shopping cart needs to be matched with the shopping escalator to be used, and the conventional shopping cart is not universal, which increases the procurement cost.

[0003] Chinese patent publication No. CN221419612U, published on July 26, 2024, application name: a chain for conveying shopping carts, the application discloses two groups of parallel roller chains, the roller chain is composed of a connecting piece hinged by long pins on the inner and outer sides, and a roller rotatingly connected with the long pin in the middle; a baffle between the two groups of roller chains; a stop block in the middle of the shopping cart crossbar. The extension direction of the baffle abutting portion is greater than 90 degrees compared with the vertical state, which increases the gripping force of the baffle and prevents the shopping cart from being thrown out. The stop block in the middle of the shopping cart crossbar abuts against the baffle.

[0004] In the above application, although the interaction between the stop block and the baffle can prevent the shopping cart from being thrown out, it needs to be matched with the stop block on each shopping cart, which is not universal with the conventional shopping cart, thereby increasing the procurement cost. In addition, since the baffle is spaced apart from the baffle, the shopping cart is easy to run off the baffle, and the reliability is poor. Utility model content

[0005] The utility model overcomes the two shortcomings of the prior art shopping cart conveying chain: (1) not universal with the conventional shopping cart, needs to be matched with a specific shopping cart, increases the procurement cost; (2) the crosspiece of the shopping cart is easy to run off the baffle, the safety is poor, a shopping cart conveying chain is provided, which can be applied to the conventional shopping cart, reduces the cost, and has an automatic locking mechanism, which can automatically lock the crosspiece of the shopping cart, prevent the shopping cart from running off, and has higher reliability.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a shopping cart conveying chain, comprising: a plurality of hingedly connected chain plates;

[0007] Several distributed setting on the chain plate, the drag plate is provided with hook groove;

[0008] The hook groove is provided with a stopper at the opening, and a lock rod is rotatably connected to the side of the hook groove close to the chain plate, and the stopper and the lock rod are provided with reset members to keep their respective reset state; the crossbar of the shopping cart is clamped into the hook groove, the stopper is rotated and cooperated with the lock rod, the lock rod locks the stopper, and the crossbar is locked in the hook groove.

[0009] In the utility model, the hook groove is arranged on the drag plate, the hook groove can be matched with the crossbar at the bottom of the conventional shopping cart, so that special shopping carts are not needed, and the purchasing cost is reduced. In addition, when the crossbar is clamped into the hook groove, the lock rod can be matched with the stopper, the stopper can automatically lock the opening of the hook groove, so that the crossbar is prevented from being taken out of the hook groove, and when the shopping cart runs to the inclined section of the elevator, the crossbar is prevented from falling due to accidental falling, and safety accidents are caused, and the utility model has the characteristics of high stability and safety.

[0010] Preferably, the stopper comprises a first stopper rod and a second stopper rod; the lock rod comprises a locking lever and an unlocking lever, and a limiting block is arranged on the locking lever; when the crossbar is locked in the hook groove, the second stopper rod abuts against the limiting block, and the first stopper rod closes the opening of the hook groove; when unlocking, the unlocking lever is pushed to make the lock rod rotate, the second stopper rod is separated from the limiting block, the stopper is reset, and the opening of the hook groove is opened.

[0011] When the drag plate moves on the horizontal section of the escalator, the end of the unlocking lever abuts against the convex block, so that the lock rod rotates by a certain angle, the stopper is in the unlocking state at this time, the stopper is in the initial position under the action of the first reset member, and the opening of the lock groove is opened; at this time, the crossbar can be taken into or separated from the lock groove at will.

[0012] When the shopping cart needs to go up or down, the crossbar is first clamped into the lock groove on the horizontal section of the escalator, the escalator continues to run, and when the escalator runs to the inclined section (regardless of whether the shopping cart goes up or down), the crossbar will press the second stopper rod at this time, the crossbar is located below the lock groove, and at the same time, the unlocking lever is separated from the convex block, the lock rod is reset under the action of the second reset member, the limiting block on the locking lever is also reset, the second stopper rod is locked, the stopper is prevented from being reset, the first stopper rod closes the opening of the lock groove, and thus the crossbar can be prevented from being separated from the lock groove when the escalator runs on the inclined section.

[0013] Preferably, the two sides of the hook groove are a first side plate and a second side plate respectively, the length of the first side plate from the bottom of the hook groove is L1, the length of the second side plate from the bottom of the hook groove is L2, and L2 < L1; the stopper is rotatably arranged on the first side plate.

[0014] The length of the first side plate is greater than that of the second side plate, so that the crossbar of the shopping cart can be clamped into the hook groove or separated from the hook groove along the first side plate.

[0015] Preferably, the first side plate is provided with a first rotating shaft, the block is provided with a first rotating hole, and the first rotating hole is rotatably arranged on the first rotating shaft; the first rotating shaft is provided with a first reset member for keeping the block reset.

[0016] The first reset member can make the block return to the original position under the action of losing external force, thereby automatically opening the locking groove.

[0017] Preferably, the second side plate is provided with a second rotating shaft, the locking rod is provided with a second rotating hole, and the second rotating hole is rotatably arranged on the second rotating shaft; the second rotating shaft is provided with a second reset member for keeping the locking rod reset.

[0018] The second reset member can make the locking rod return to the original position under the action of losing external force, thereby automatically opening the locking groove.

[0019] Preferably, two parallel chain plates form a rotating unit, adjacent rotating units are rotatably connected through a hinge shaft, and the hinge shaft is provided with chain rollers at both ends.

[0020] In order to improve the strength of the entire shopping cart conveying chain, the chain can be in the form of the chain mentioned in the background art or other chain structures, which are not limited herein. In the embodiment, two parallel chain plates form a rotating unit, adjacent rotating units are rotatably connected through a hinge shaft, and the hinge shaft is provided with chain rollers at both ends.

[0021] Preferably, the locking rod and the block are arranged between the two parallel drag plates.

[0022] The locking rod and the block are arranged between the two parallel drag plates, which makes the structure more reasonable, reduces the volume of the overall structure, and facilitates the assembly of the drag plate.

[0023] Preferably, the drag plate and the chain plate are integrally formed.

[0024] The drag plate and the chain plate can be two independent components, and the drag plate can be installed on the chain plate by disassembly and assembly. In the embodiment, the chain plate and the drag plate are integrally formed to form a drag plate rotating unit, which can be directly combined with the rotating unit to form a chain. The integrally formed drag plate and chain plate have the characteristics of convenient processing and assembly, and stable structure.

[0025] Preferably, the first side plate is provided with a first hook portion at the end, the second side plate is provided with a second hook portion at the end, and the first hook portion and the second hook portion are oppositely arranged.

[0026] When the crosspiece of the shopping cart slides into the hook groove along the first side plate, the first hook portion can guide the crosspiece to slide into the hook groove more smoothly, and the second hook portion can cooperate with the block to lock the hook groove to prevent the crosspiece from being separated from the hook groove.

[0027] Preferably, the upper part of the drag plate is provided with a first limiting rod for limiting the rotation angle of the lock rod, and the lock rod abuts against the first limiting rod when the lock rod is reset.

[0028] The first limiting rod limits the rotation angle of the lock rod, so that the lock rod can lock the block.

[0029] Compared with the prior art, the hook groove on the drag plate can be matched with the crosspiece at the bottom of the conventional shopping cart, so that a special shopping cart does not need to be customized, and the procurement cost is reduced. In addition, when the crosspiece is clamped into the hook groove, the lock rod can cooperate with the block, and the block can automatically lock the opening of the hook groove, thereby preventing the crosspiece from being separated from the hook groove, preventing the shopping cart from falling due to accidental separation when running to the inclined section of the elevator, and causing safety accidents. The utility model has the characteristics of high stability and safety. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the perspective view of the utility model.

[0031] Figure 2 is the sectional view of the drag plate of the utility model.

[0032] Figure 3 is the structure schematic view when the drag plate of the utility model runs to the horizontal section of the escalator.

[0033] Figure 4 is the structure schematic view when the shopping cart of the utility model runs upward.

[0034] Figure 5 is the structure schematic view when the shopping cart of the utility model runs downward.

[0035] In the drawing: 1, chain plate, 11, hinged shaft, 12, chain roller, 13, rotation unit;

[0036] 2, drag plate, 21, hook groove, 22, first side plate, 221, first hook portion, 23, second side plate, 231, second hook portion, 24, first rotation shaft, 241, first reset piece, 25, second rotation shaft, 26, first limiting rod;

[0037] 3, block, 31, first blocking rod, 32, second blocking rod, 33, first rotation hole;

[0038] 4, lock rod, 41, locking lever, 42, unlocking lever, 43, limiting block, 44, second rotating hole, 441, second reset member;

[0039] 5, protrusion. DETAILED DESCRIPTION

[0040] The technical scheme of the utility model will be further described in detail below with specific examples and in conjunction with the drawings:

[0041] Example 1: refer to Figures 1 to 5 As shown in the figure, a shopping cart conveying chain, comprising: a plurality of mutually articulated chain plates 1;

[0042] A plurality of scattered on the chain plate 1 drag plate 2, the hook groove 21 is provided on the drag plate 2;

[0043] The opening of the hook groove 21 is rotatably provided with a stop block 3, and the lock rod 4 is rotatably connected on the side of the hook groove 21 close to the chain plate 1, and the stop block 3 and the lock rod 4 are provided with reset members respectively to keep their respective reset state; the crossbar of the shopping cart is clamped into the hook groove 21, the stop block 3 is rotated and cooperated with the lock rod 4, the lock rod 4 locks the stop block 3, and the crossbar is locked in the hook groove 21.

[0044] In this embodiment, the hook groove 21 is provided on the drag plate 2, which can be matched with the crossbar at the bottom of the conventional shopping cart, so that special shopping carts do not need to be customized, and the procurement cost is reduced. In addition, when the crossbar is clamped into the hook groove 21, the lock rod 4 can cooperate with the stop block 3, and the stop block 3 can automatically lock the opening of the hook groove 21, thereby preventing the crossbar from falling out of the hook groove 21, preventing the shopping cart from falling due to accidental falling when running to the inclined section of the elevator, causing safety accidents, and having the characteristics of high stability and safety.

[0045] Example 2: refer to Figures 1 to 5 As shown in the figure, a shopping cart conveying chain, comprising: a plurality of mutually articulated chain plates 1;

[0046] A plurality of scattered on the chain plate 1 drag plate 2, the hook groove 21 is provided on the drag plate 2;

[0047] The opening of the hook groove 21 is rotatably provided with a stop block 33, and the lock rod 4 is rotatably connected on the side of the hook groove 21 close to the chain plate 1, and the stop block 3 and the lock rod 4 are provided with reset members respectively to keep their respective reset state; the crossbar of the shopping cart is clamped into the hook groove 21, the stop block 3 is rotated and cooperated with the lock rod 4, the lock rod 4 locks the stop block 3, and the crossbar is locked in the hook groove 21.

[0048] In one embodiment, the chain plates 1 are connected by the hinge shafts 11; the chain rollers 12 are arranged on the hinge shafts 11. In order to improve the strength of the whole shopping cart conveying chain, the chain can be arranged in the form of the chain in the document mentioned in the background art, or other chain structure forms, which are not limited herein. In this embodiment, a rotating unit 13 is formed by two parallel chain plates 1, and the adjacent rotating units 13 are connected by the hinge shafts 11; the chain rollers 12 are rotatably arranged at the two ends of the hinge shafts 11.

[0049] Since the shopping cart conveying chain in this embodiment is formed by two parallel chain plates 1 forming a rotating unit 13, when one of the chain plates 1 is provided with a drag plate 2, the other chain plate 1 corresponding to the rotating unit 13 is also provided with a drag plate 2 in parallel, so that the two parallel drag plates 2 form a drag plate whole. Therefore, the lock rod 4 and the stop block 3 in this embodiment are arranged between the two parallel drag plates 2, and the lock rod 4 and the stop block 3 rotate between the two parallel drag plates 2.

[0050] The drag plate 2 and the chain plate 1 can be two independent components, and the chain plate 1 can be installed by disassembly. In this embodiment, the chain plate 1 and the drag plate 2 are integrally formed to form a drag plate 2 rotating unit 13, which can be directly combined with the rotating unit 13 to form a chain. The integrally formed drag plate 2 and the chain plate 1 have the characteristics of convenient processing and assembly, and stable structure.

[0051] The number of the drag plates 2 is less than the number of the rotating units 13, that is, one, two, three or more rotating units 13 are arranged between the adjacent drag plates 2, and the number of the rotating units 13 arranged between the adjacent drag plates 2 is determined according to the specific width of the shopping cart to avoid collision of the shopping cart during transportation on the shopping cart conveying chain.

[0052] In one embodiment, the hook groove 21 is flanked by a first side plate 22 and a second side plate 23, the length of the first side plate 22 from the bottom of the hook groove 21 is L1, the length of the second side plate 23 from the bottom of the hook groove 21 is L2, and L2 < L1; the stop block 3 is rotatably arranged on the first side plate 22. The length of the first side plate 22 is greater than the length of the second side plate 23, which facilitates the crosspiece of the shopping cart to be clamped into or separated from the hook groove 21 along the first side plate 22.

[0053] A first hook portion 221 is arranged at the end of the first side plate 22, and a second hook portion 231 is arranged at the end of the second side plate 23. The first hook portion 221 and the second hook portion 231 are arranged oppositely. When the crosspiece of the shopping cart slides into the hook groove 21 along the first side plate 22, the first hook portion 221 can guide the crosspiece, so that the crosspiece can slide into the hook groove 21 more smoothly. The second hook portion 231 can cooperate with the stopper 3 to lock the hook groove 21, so as to prevent the crosspiece from being separated from the hook groove 21.

[0054] In one embodiment, the stopper 3 comprises a first stopper rod 31 and a second stopper rod 32, one end of the first stopper rod 31 and the second stopper rod 32 are fixedly connected, and a certain included angle A is formed between the first stopper rod 31 and the second stopper rod 32. The size of the included angle A is between 30 degrees and 90 degrees.

[0055] The first side plate 22 is provided with a first rotating shaft 24, and the stopper 3 is provided with a first rotating hole 33. The first rotating hole 33 is arranged on the first rotating shaft 24 in a rotating manner. The first rotating shaft 24 is provided with a first reset member 241 for keeping the stopper 3 in a reset state. In this embodiment, the first reset member 241 is a torsion spring.

[0056] The lock rod 4 comprises a locking lever 41 and an unlocking lever 42. One end of the locking lever 41 and the unlocking lever 42 are fixedly connected, and a certain included angle B is formed between the locking lever 41 and the unlocking lever 42. The size of the included angle B is between 45 degrees and 135 degrees.

[0057] The locking lever 41 is provided with a limiting block 4343 arranged at the middle portion of the locking lever 41. When the crosspiece is locked in the hook groove 21, the second stopper rod abuts against the limiting block 43, and the first stopper rod closes the opening of the hook groove 21. When unlocking, the unlocking lever 42 is actuated to rotate the lock rod 4, the second stopper rod is separated from the limiting block 43, the stopper 3 is reset, and the opening of the hook groove 21 is opened.

[0058] The drag plate 2 is provided with a second rotating shaft 25, and the lock rod 4 is provided with a second rotating hole 44. The second rotating hole 44 is arranged at the connecting position of the locking lever 41 and the unlocking lever 42. The second rotating hole 44 is arranged on the second rotating shaft 25 in a rotating manner. The second rotating shaft 25 is provided with a second reset member 441 for keeping the lock rod 4 in a reset state. In this embodiment, the second reset member 441 is a torsion spring.

[0059] The working principle of this embodiment is as follows: Figure 3As shown, in specific use, the protrusion 5 is installed along the running path of the escalator at the horizontal section of the escalator, when the drag plate 2 moves at the horizontal section of the escalator, the end of the unlocking lever 42 abuts against the protrusion 5, so that the locking rod 4 rotates by a certain angle, at this time, the blocking block 3 is in the unlocking state, the blocking block 3 is in the initial position under the action of the first reset member 241, and the opening of the locking slot is opened; at this time, the crosspiece can enter or separate from the locking slot at will.

[0060] When the shopping cart needs to go up or down, as shown in Figure 4 or Figure 5 As shown, first, the crosspiece is clamped into the locking slot at the horizontal section of the escalator, and the escalator continues to run, when the escalator runs to the inclined section (whether the shopping cart goes up or down), at this time, the crosspiece will press down the second blocking rod 32, the crosspiece is located below the locking slot, at the same time, the unlocking lever 42 is separated from the protrusion 5, under the action of the second reset member 441, the locking rod 4 is reset, the limiting block 43 on the locking lever 41 is also reset, the second blocking rod 32 is locked, the blocking block 3 is prevented from resetting, and the first blocking rod 31 closes the opening of the locking slot, so that the crosspiece can be prevented from separating from the locking slot when running at the inclined section of the escalator. The above process is an automatic locking process.

[0061] When the shopping cart runs to the horizontal section of the escalator (the shopping cart reaches the top or the bottom), the end of the unlocking lever 42 abuts against the protrusion 5 of the horizontal section of the escalator, so that the locking rod 4 rotates by a certain angle, at this time, the second blocking rod 32 can rotate freely, the blocking block 3 is reset under the action of the first reset member 241, the locking is automatically released, the opening of the locking slot is opened, and the crosspiece can separate from the locking slot at this time, and the shopping cart can be freely pushed.

[0062] In the utility model, the hook groove 21 is arranged on the drag plate 2, the hook groove 21 can be matched with the crosspiece at the bottom of the conventional shopping cart, so that special shopping carts are not needed, and the procurement cost is reduced. In addition, when the crosspiece is clamped into the hook groove 21, the locking rod 4 can be matched with the blocking block 3, the blocking block 3 can automatically lock the opening of the hook groove 21, so that the crosspiece is prevented from separating from the hook groove 21, and the safety accident caused by accidental falling when the shopping cart runs to the inclined section of the escalator is prevented, and the utility model has the characteristics of high stability and safety.

[0063] Embodiment 3: refer to Figures 1 to 5 As shown, a shopping cart conveying chain comprises: a plurality of chain plates 1 that are hingedly connected with each other;

[0064] A plurality of drag plates 2 are arranged on the chain plate 1, and the drag plate 2 is provided with a hook groove 21;

[0065] A stopper 33 is rotatably arranged at the opening of the hook groove 21, and a locking rod 4 is rotatably connected to the side of the hook groove 21 close to the chain plate 1. The stopper 3 and the locking rod 4 are respectively provided with reset members to keep their respective reset states. The crosspiece of the shopping cart is clamped into the hook groove 21, the stopper 3 is rotated to cooperate with the locking rod 4, the locking rod 4 locks the stopper 3, and the crosspiece is locked in the hook groove 21.

[0066] In one embodiment, the chain plates 1 are rotatably connected by the hinge shaft 11, and the chain rollers 12 are arranged on the hinge shaft 11. In order to improve the strength of the entire shopping cart conveying chain, the chain can be arranged in the form of the chain mentioned in the background art or other chain structures, which are not limited herein. In this embodiment, a rotating unit 13 is formed by two parallel chain plates 1, and adjacent rotating units 13 are rotatably connected by the hinge shaft 11. The chain rollers 12 are rotatably arranged at the two ends of the hinge shaft 11.

[0067] Since the shopping cart conveying chain in this embodiment adopts the mode of two parallel chain plates 1 overlapping to form a rotating unit 13, when one of the chain plates 1 is provided with a drag plate 2, the other chain plate 1 corresponding to the rotating unit 13 is also provided with a parallel drag plate 2, so that the two parallel drag plates 2 cooperate to form a drag plate whole. Therefore, the locking rod 4 and the stopper 3 in this embodiment are arranged between the two parallel drag plates 2, and the locking rod 4 and the stopper 3 rotate between the two parallel drag plates 2.

[0068] The drag plate 2 and the chain plate 1 can be two independent components, and the chain plate 1 can be installed by disassembly. In this embodiment, the chain plate 1 and the drag plate 2 are integrally formed to form a drag plate 2 rotating unit 13, which can directly cooperate with the rotating unit 13 to form a chain. The integrally formed drag plate 2 and the chain plate 1 have the characteristics of convenient processing and assembly, and stable structure.

[0069] The number of the drag plates 2 is less than the number of the rotating units 13, that is, one, two, three or more rotating units 13 are arranged between adjacent drag plates 2, and the number of the rotating units 13 arranged between the adjacent drag plates 2 is determined according to the specific width of the shopping cart to avoid collision of the shopping cart during transportation.

[0070] In one embodiment, the hook groove 21 is provided with a first side plate 22 and a second side plate 23 on both sides, the length of the first side plate 22 from the bottom of the hook groove 21 is L1, the length of the second side plate 23 from the bottom of the hook groove 21 is L2, and L2 < L1. The stopper 3 is rotatably arranged on the first side plate 22. The length of the first side plate 22 is greater than the length of the second side plate 23, which facilitates the crosspiece of the shopping cart to be clamped into or separated from the hook groove 21 along the first side plate 22.

[0071] A first hook portion 221 is arranged at the end of the first side plate 22, and a second hook portion 231 is arranged at the end of the second side plate 23. The first hook portion 221 and the second hook portion 231 are arranged oppositely. When the crosspiece of the shopping cart slides into the hook groove 21 along the first side plate 22, the first hook portion 221 can guide the crosspiece, so that the crosspiece can slide into the hook groove 21 more smoothly. The second hook portion 231 can cooperate with the stopper 3 to lock the hook groove 21, so as to prevent the crosspiece from being separated from the hook groove 21.

[0072] In one embodiment, the stopper 3 comprises a first stopper rod 31 and a second stopper rod 32, one end of the first stopper rod 31 and the second stopper rod 32 is fixedly connected, and a certain included angle A is formed between the first stopper rod 31 and the second stopper rod 32, and the size of the included angle A is between 30 degrees and 90 degrees.

[0073] The first side plate 22 is provided with a first rotating shaft 24, and the stopper 3 is provided with a first rotating hole 33, which is arranged at the connection position of the first stopper rod 31 and the second stopper rod 32. The first rotating hole 33 is rotatably arranged on the first rotating shaft 24; and the first rotating shaft 24 is provided with a first reset member 241 for keeping the stopper 3 reset, and the first reset member 241 in this embodiment is a torsion spring.

[0074] The lock rod 4 comprises a locking lever 41 and an unlocking lever 42, one end of the locking lever 41 and the unlocking lever 42 is fixedly connected, and a certain included angle B is formed between the locking lever 41 and the unlocking lever 42, and the size of the included angle B is between 45 degrees and 135 degrees.

[0075] The locking lever 41 is provided with a limiting block 4343, which is arranged at the middle portion of the locking lever 41; when the crosspiece is locked in the hook groove 21, the second stopper rod abuts against the limiting block 43, and the first stopper rod closes the opening of the hook groove 21; when unlocking, the unlocking lever 42 is actuated to rotate the lock rod 4, the second stopper rod is separated from the limiting block 43, the stopper 3 is reset, and the opening of the hook groove 21 is opened.

[0076] The drag plate 2 is provided with a second rotating shaft 25, and the lock rod 4 is provided with a second rotating hole 44, which is arranged at the connection position of the locking lever 41 and the unlocking lever 42. The second rotating hole 44 is rotatably arranged on the second rotating shaft 25; and the second rotating shaft 25 is provided with a second reset member 441 for keeping the lock rod 4 reset, and the second reset member 441 in this embodiment is a torsion spring.

[0077] The working principle of this embodiment is as follows: Figure 3As shown, in specific use, the protrusion 5 is installed along the running path of the escalator at the horizontal section of the escalator, when the plate 2 moves at the horizontal section of the escalator, the end of the unlocking lever 42 abuts against the protrusion 5, so that the locking rod 4 rotates by a certain angle, at this time, the blocking block 3 is in the unlocking state, the blocking block 3 is in the initial position under the action of the first reset member 241, and the opening of the locking slot is opened; at this time, the crosspiece can enter or separate from the locking slot at will.

[0078] In one embodiment, the plate 2 is provided with a first limiting rod 26 for limiting the rotation angle of the locking rod 4, and the locking rod 4 abuts against the first limiting rod 26 when the locking rod 4 is reset. The first limiting rod 26 limits the rotation angle of the locking rod 4, so as to ensure that the locking rod 4 locks the blocking block 3.

[0079] When the shopping cart needs to go up or down, as shown in the drawings, Figure 4 or Figure 5 As shown, first, the crosspiece is clamped into the locking slot at the horizontal section of the escalator, and the escalator continues to run, when the escalator runs to the inclined section (whether the shopping cart goes up or down), at this time, the crosspiece will press down the second blocking rod 32, the crosspiece is located below the locking slot, at the same time, the unlocking lever 42 is separated from the protrusion 5, under the action of the second reset member 441, the locking rod 4 is reset, the limiting block 43 on the locking lever 41 is also reset, the second blocking rod 32 is locked, the blocking block 3 is prevented from being reset, and the first blocking rod 31 closes the opening of the locking slot, so that the crosspiece can be prevented from separating from the locking slot when the escalator runs at the inclined section. The above process is an automatic locking process.

[0080] When the shopping cart runs to the horizontal section of the escalator (the shopping cart reaches the top end or the bottom end), the end of the unlocking lever 42 abuts against the protrusion 5 of the horizontal section of the escalator, so that the locking rod 4 rotates by a certain angle, at this time, the second blocking rod 32 can rotate freely, the blocking block 3 is reset under the action of the first reset member 241, the locking is automatically released, the opening of the locking slot is opened, and the crosspiece can separate from the locking slot at this time, and the shopping cart can be freely pushed.

[0081] In the utility model, the hook groove 21 is arranged on the plate 2, the hook groove 21 can be matched with the crosspiece at the bottom of the conventional shopping cart, so that a special shopping cart is not needed, and the procurement cost is reduced. In addition, when the crosspiece is clamped into the hook groove 21, the locking rod 4 can be matched with the blocking block 3, the blocking block 3 can automatically lock the opening of the hook groove 21, so that the crosspiece is prevented from separating from the hook groove 21, and the shopping cart is prevented from falling due to accidental separation when running to the inclined section of the escalator, so that a safety accident is avoided, and the utility model has the characteristics of high stability and safety.

[0082] The above-described embodiments are only preferred solutions of the present application, and do not limit the present application in any form, and other variants and modifications are possible without departing from the technical solutions recited in the claims.

Claims

1. A trolley conveyor chain, characterized in that, The utility model relates to a shopping trolley, including: a plurality of mutually hinged chain plates; a plurality of distributed drag plates arranged on the chain plates, the drag plates being provided with hook grooves; a stopper is rotatably arranged at the opening of the hook groove, a locking rod is rotatably connected to the side of the hook groove close to the chain plate, the stopper and the locking rod are each provided with a reset member to keep them in the reset state; the crosspiece of the shopping trolley is clamped into the hook groove, the stopper is rotated to cooperate with the locking rod, the locking rod locks the stopper to lock the crosspiece in the hook groove.

2. The cart conveyor chain of claim 1, wherein, The stopper includes a first stopper rod and a second stopper rod; the locking rod includes a locking lever and an unlocking lever, the locking lever is provided with a limiting block; when the crosspiece is locked in the hook groove, the second stopper rod abuts against the limiting block, and the first stopper rod closes the opening of the hook groove; when unlocking, the unlocking lever is actuated to rotate the locking rod, the second stopper rod is separated from the limiting block, the stopper is reset, and the opening of the hook groove is opened.

3. The cart conveyor chain of claim 1 or 2, wherein, The two sides of the hook groove are respectively a first side plate and a second side plate, the length of the first side plate from the bottom of the hook groove is L1, the length of the second side plate from the bottom of the hook groove is L2, and L2 < L1; the stopper is rotatably arranged on the first side plate.

4. The cart conveyor chain of claim 3, wherein, The first side plate is provided with a first rotating shaft, the stopper is provided with a first rotating hole, and the first rotating hole is rotatably arranged on the first rotating shaft; the first rotating shaft is provided with a first reset member to keep the stopper in the reset state.

5. The cart conveyor chain of claim 3 wherein, The drag plate is provided with a second rotating shaft, the locking rod is provided with a second rotating hole, and the second rotating hole is rotatably arranged on the second rotating shaft; the second rotating shaft is provided with a second reset member to keep the locking rod in the reset state.

6. The cart conveyor chain of claim 1, wherein, Two parallel chain plates form a rotating unit, adjacent rotating units are rotatably connected through a hinged shaft; the two ends of the hinged shaft are provided with chain rollers.

7. The cart conveyor chain of claim 6, wherein, The locking rod and the stopper are arranged between the two parallel drag plates.

8. The cart conveyor chain of claim 1 or 2 or 6 or 7, wherein, The drag plate and the chain plate are integrally formed.

9. The cart conveyor chain of claim 3, wherein, The end of the first side plate is provided with a first hook portion, and the end of the second side plate is provided with a second hook portion; the first hook portion and the second hook portion are oppositely arranged.

10. The cart conveyor chain of claim 3, wherein, The drag plate is provided with a first limiting rod limiting the rotation angle of the locking rod, and the locking rod abuts against the first limiting rod when the locking rod is reset.

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