Cart gauge limiting device and conveying equipment

Abstract

The invention relates to a cart gauge limiting device and conveying equipment. The conveying equipment comprises the cart gauge limiting device. The cart gauge limiting device comprises a rotating rod rotationally arranged on the conveying equipment; the push rod is arranged at the first end of the rotating rod and rotates to drive the rotating rod to rotate; the stop lever is arranged at the first end of the rotating rod; the fixed rod is arranged at the second end of the rotating rod and is driven by the rotating rod to rotate; the locking piece is used for locking the fixed rod at the locking position or unlocking the fixed rod; the resetting piece is used for providing tension required by rotation for the fixed rod; the first sensor is used for outputting a locking sensing signal when detecting that the cart enters a sensing area of the first sensor; and the second sensor is used for outputting an unlocking sensing signal when detecting that the cart enters the sensing area of the second sensor. According to the cart gauge limiting device, it can be ensured that the carts enter the conveying equipment at the preset gauge and are conveyed, the carts are prevented from being overlapped or entering the conveying equipment at a small gauge, and damage to the carts or the conveying equipment due to mutual extrusion of the carts is avoided.

Description

Technical Field

[0001] The invention relates to a conveying device for a cart and a distance limiting device for the cart used therein. Background Art

[0002] Cart conveying equipment is widely used in supermarkets and other occasions. Currently, common cart conveying equipment can allow multiple carts to be placed in an overlapping manner and move in parallel to reduce the space occupied. The conveying equipment set at different heights includes an upper plane, a lower plane, and an inclined section set between the upper plane and the lower plane. The inclined section has road strips for the front wheels and rear wheels of the cart to move respectively, and the road strips for the front wheels to move and the road strips for the rear wheels to move are set up and down. The inclined section is transitionally connected with the upper plane and the lower plane through arc surfaces. When multiple carts overlap or enter the cart conveying equipment with a small spacing from front to back, due to the height difference of the road strips, the carts will squeeze each other at the inclined section or the arc surface, causing damage to the carts or the cart conveying equipment. Therefore, it is necessary to limit the spacing of the carts entering the cart conveying equipment. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a cart spacing limiting device, which can limit the spacing of carts entering the conveying equipment, avoid the carts from overlapping or entering the cart conveying equipment with a small spacing, thereby avoiding damage to the carts or the cart conveying equipment due to the mutual squeezing of the carts.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: A cart spacing limiting device is arranged at the starting section of a conveying device for conveying a cart, the cart includes a car stop bar, the conveying device has a working channel for the car stop bar to move, and the cart spacing limiting device includes: Rotating a rotating rod disposed on the conveying device; A push rod disposed at the first end of the rotating rod and used to cooperate with the vehicle stop bar to rotate between a first position and a second position to drive the rotating rod to rotate; A blocking rod disposed at the first end of the rotating rod and rotating synchronously with the rotating rod; A fixed rod disposed at the second end of the rotating rod and driven by the rotating rod to rotate between an initial position and a locking position; A locking member disposed at a side of the locking position and capable of locking the fixed rod at the locking position based on a locking sensing signal or unlocking the fixed rod based on an unlocking sensing signal; A reset member disposed at the side of the initial position and used to provide the fixed rod with a pulling force required for rotating from the locking position to the unlocking position; A first sensor disposed at the side of the second position and configured to output the locking sensing signal when detecting that the cart enters its sensing area; A second sensor disposed in front of the conveying direction of the conveying device relative to the first sensor and used to output the unlocking sensing signal when detecting that the cart enters its sensing area; When the push rod is in the first position, the push rod closes the working channel, the baffle rod is located outside the conveying channel, and the fixed rod is in the initial position; when the vehicle baffle bar enters the working channel and pushes the push rod, the push rod rotates from the first position to the second position, and the fixed rod rotates from the initial position to the locking position; when the push rod is in the second position, the push rod is located outside the conveying channel, the baffle rod closes the working channel, the fixed rod rotates to the locking position, and the cart enters the sensing area of ​​the first sensor.

[0005] Furthermore, the cart spacing limiting device also includes a limiting block arranged on the side of the starting position and used to limit the fixed rod.

[0006] Preferably, the locking member includes an electromagnet and a controller for controlling power on or off of the electromagnet based on the locking sensing signal or the unlocking sensing signal, and the first sensor and the second sensor are respectively connected to the controller.

[0007] According to a specific embodiment of the present invention, the starting section of the conveying equipment has a starting top platform and a starting bottom platform arranged below the starting top platform, the axis of the rotating rod is perpendicular to the starting top platform and the starting bottom platform, the first end of the rotating rod is located on the starting top platform, and the second end of the rotating rod is located on the starting bottom platform.

[0008] According to a preferred embodiment of the present invention, the axis of the push rod, the axis of the baffle rod and the axis of the fixed rod are all perpendicular to the axis of the rotating rod, and on a plane perpendicular to the axis of the rotating rod, the projection of the axis of the push rod and the projection of the axis of the baffle rod intersect.

[0009] Preferably, the reset member includes a spring and a bracket arranged on the conveying device, and two ends of the spring are respectively connected to the fixed rod and the bracket.

[0010] Another aspect of the present invention provides a conveying device for conveying a cart including a cart stop bar, wherein the conveying device includes the aforementioned cart spacing limiting device.

[0011] Furthermore, the conveying equipment includes a truss, a left guide bar arranged on the truss, a right guide bar arranged on the truss, a plurality of transmission wheels arranged in the truss, an electric motor connected to the transmission wheel, a conveying chain cooperated with the transmission wheel for transmission, a plurality of chain baffles arranged on the conveying chain and capable of cooperating with the vehicle baffle bar, and wheel road bars respectively arranged on the left side of the left guide bar and the right side of the right guide bar for movement of the wheels of the cart, the left guide bar and the right guide bar are arranged in parallel, the working channel is formed between the left guide bar and the right guide bar, and a part of the conveying chain is transmitted in the working channel.

[0012] Preferably, the transmission wheel includes a driving wheel and a driven wheel, and the motor is connected to the driving wheel via a belt drive.

[0013] According to a preferred embodiment of the present invention, the wheel road strips include a front wheel road strip for moving the front wheels of the cart and a rear wheel road strip for moving the rear wheels of the cart, and a portion of the front wheel road strip and a portion of the rear wheel road strip have a height difference.

[0014] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention adopts a cart spacing limiting device, which can ensure that the cart enters the conveying equipment at a preset spacing and is transported, avoids the carts from overlapping or entering the conveying equipment at a small spacing, and avoids damage to the carts or the conveying equipment due to squeezing of the carts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a front schematic diagram of the conveying equipment of the present invention.

[0016] Attached Figure 2 It is a schematic top view in the direction of A of the starting section of the conveying device of the present invention before the trolley enters and when the push rod is in the first position.

[0017] Attached Figure 3 It is a schematic top view in the direction of A of the starting section of the conveying device of the present invention when the push rod is pushed by the push cart.

[0018] Attached Figure 4 It is a schematic top view in the direction A of the starting section of the conveying device of the present invention when the push rod is in the second position and the trolley enters the sensing area of ​​the first sensor.

[0019] Attached Figure 5 It is a schematic top view in the direction A of the starting section of the conveying device of the present invention when the cart enters the sensing area of ​​the second sensor.

[0020] In the above drawings: 1, cart; 11, cart body; 12, push handle; 13, wheel frame; 14, front wheel; 15, rear wheel; 16, front cross bar; 17, cart stop bar; 2. Conveying equipment; 21. Truss; 22. Left guide bar; 23. Right guide bar; 24. Driving wheel; 25. Driven wheel; 26. Motor; 27. Conveying chain; 28. Chain stopper; 29. ​​Front wheel road bar; 210. Rear wheel road bar; 211. Electric control box; 212. Starting top platform; 213. Starting bottom platform; 214. Working channel; 3. Trolley spacing limiting device; 31. Rotating rod; 32. Push rod; 33. Stop rod; 34. Fixed rod; 35. Electromagnet; 36. Reset member; 37. First sensor; 38. Second sensor; 39. Limit block; 310. Bracket. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0022] Embodiment 1: As shown in the attached Figure 1 To Attachment Figure 5 As shown, the cart 1 includes a body 11, a push handle 12 disposed at the rear of the body 11, a wheel frame 13 disposed at the lower part of the body 11, a pair of front wheels 14 disposed at the bottom of the wheel frame 13, and a pair of rear wheels 15 disposed at the bottom of the wheel frame 13 and located obliquely behind the front wheels 14. The wheel frame 13 includes a left frame disposed at the left side of the body 11 and extending in the front-to-back direction, a right frame disposed at the rear of the body 11 and extending in the front-to-back direction, a front cross bar 16 connecting the left frame and the right frame at the front end, and a rear cross bar connecting the left frame and the right frame at the rear end. A car stop bar 17 is disposed in the middle of the front cross bar 16. The left frame and the right frame are symmetrically inclined, and the spacing between the two front wheels 14 is smaller than the spacing between the two rear wheels 15.

[0023] The conveying device 2 for conveying the cart 1 includes a truss 21, a left guide bar 22, a right guide bar 23, a plurality of transmission wheels, a motor 26, a conveying chain 27, a plurality of chain baffles 28 and a wheel road bar. Specifically, the truss 21 is arranged along the conveying direction of the conveying device 2. In this embodiment, the conveying device 2 is arranged between different height positions, so its truss 21 is assumed to be between different height positions. Along the conveying direction of the conveying device 2, it can be roughly divided into three sections: a starting section, a middle section and an ending section, wherein the middle section is mainly an inclined section. The starting section has a starting top platform 212 and a starting bottom platform 213 arranged below the starting top platform 212. In this embodiment, the starting section of the conveying device 2 is located at a relatively high position, while the ending section is located at a relatively low position. The left guide bar 22 and the right guide bar 23 are both arranged on the truss 21 and extend along the conveying direction. The left guide bar 22 is located on the left side of the right guide bar 23. The left guide bar 22 and the right guide bar 23 are arranged in parallel with a gap formed therebetween. A working channel 214 for the vehicle stop bar 17 of the cart 1 to move is formed between the left guide bar 22 and the right guide bar 23, and wheel road bars are arranged on the left side of the left guide bar 22 and on the right side of the right guide bar 23. The wheel road bars for the vehicle movement of the cart 1 include a front wheel road bar 29 for the front wheels 14 of the cart 1 to move and a rear wheel road bar 210 for the rear wheels 15 of the cart 1 to move. Since the spacing between the front wheels 14 of the cart 1 is smaller than the spacing between the rear wheels 15, the rear wheel road strip 210 is located on the left side of the left guide strip 22 and on the right side of the right guide strip 23, the rear wheel road strip 210 is located on the right side of the front wheel road strip 29, that is, the front wheel road strip and the rear wheel road strip 210 on the left side of the left guide strip 22 are symmetrically arranged with the front wheel road strip and the rear wheel road strip 210 on the right side of the right guide strip 23, and the rear wheel road strip 210 is further away from the center of the working channel 214 than the front wheel road strip 29 and is located on the outside. At the same time, in the middle section of the conveying device 2, a part of the front wheel road strip 29 and a part of the rear wheel road strip 210 have a drop in the height direction, so that the cart 1 can be transported in a relatively horizontal posture in this section. A plurality of transmission wheels are arranged in the truss 21 and driven to rotate by the motor 26. The transmission wheels include a driving wheel 24 and a driven wheel 25, which are respectively arranged at the starting section and the ending section of the conveying device 2. The motor 26 connected to the driving wheel 24 in the transmission wheel is arranged at the starting section of the conveying device 2 and is connected to the driving wheel 24 through a belt drive. The conveying chain 27 is arranged in the truss 21 and cooperates with the transmission wheel for transmission, that is, when the transmission wheel rotates, the conveying chain 27 is driven to rotate. A plurality of chain stoppers 28 are evenly arranged on the conveying chain 27 at fixed intervals. The chain stoppers 28 can cooperate with the car stopper bar 17 of the cart 1, and a part of the conveying chain 27 is driven in the working channel 214, so that as the conveying chain 27 runs, the chain stoppers 28 located at the rear side of the car stopper bar 17 can push the car stopper bar 17, thereby driving the cart 1 to move forward as a whole.

[0024] The conveying device 2 is provided with a cart spacing limiting device 3 at its starting section to limit the spacing of the carts 1 entering the conveying device 2 to avoid a small spacing between two carts 1 .

[0025] The cart spacing limiting device 3 includes a rotating rod 31, a push rod 32, a stop rod 33, a fixed rod 34, a locking member, a reset member 36, a first sensor 37, a second sensor 38 and a limit block 39. The rotating rod 31 is rotatably arranged on the conveying device 2. In this embodiment, the axis of the rotating rod 31 is vertically arranged, that is, the axis of the rotating rod 31 is perpendicular to the starting top platform 212 and the starting bottom platform 213. The first end of the rotating rod 31 is located on the starting top platform 212 to form its upper end, and the second end of the rotating rod 31 is located on the starting bottom platform 213 to form its lower end, so the rotating rod 31 can also be called a vertical rod. The rotating rod 31 can be arranged on the right guide bar 23 or the left guide bar 22. The push rod 32 is arranged at the first end of the rotating rod 31, and its axis is perpendicular to or at a certain angle to the axis of the rotating rod 31. In this embodiment, a vertical arrangement is adopted. The push rod 32 is used to cooperate with the vehicle stop bar 17 to rotate between the first position and the second position, thereby driving the rotating rod 31 to rotate synchronously. The blocking rod 33 is arranged at the first end of the rotating rod 31, and its axis is perpendicular to or forms a certain angle with the axis of the rotating rod 31. In this embodiment, a vertical arrangement is adopted. At the same time, on the plane perpendicular to the axis of the rotating rod 31, the projection of the axis of the push rod 32 and the projection of the axis of the blocking rod 33 intersect, that is, an angle is also formed between the push rod 32 and the blocking rod 33, and the angle of the angle is equal to the angle between the first position and the second position of the push rod 32. The fixed rod 34 is arranged at the second end of the rotating rod 31, and its axis is perpendicular to or forms a certain angle with the axis of the rotating rod 31. In this embodiment, a vertical arrangement is adopted. The fixed rod 34 is driven by the rotating rod 31 to rotate between the initial position and the locked position. The locking member is arranged around the second end of the fixed rod 34, and is located at the locked position side of the fixed rod 34, and is arranged on the starting bottom platform 213. The locking member is used to lock the fixed rod 34 in the locked position based on the locking sensing signal or to unlock the locking rod 34 based on the unlocking sensing signal. In this embodiment, the fixed rod 34 is made of magnetic metal material, so the locking member can be a magnetic attraction member, that is, the locking member includes an electromagnet 35, a controller that controls the electromagnet 35 to be powered on or off based on a locking induction signal or an unlocking induction signal, and a first sensor 37 and a second sensor 38 are connected to the controller respectively. The controller can be arranged in the electric control box 211 of the conveying device. The reset member 36 is arranged around the second end of the fixed rod 34 and is located on the side of the initial position of the fixed rod 34, which is used to provide the fixed rod 34 with the required pulling force to rotate from the locked position to the unlocked position. In this embodiment, the reset member 36 includes a spring and a bracket 310 arranged on the starting bottom platform 213 of the conveying device 2, and the two ends of the spring are respectively connected to the fixed rod 34 and the bracket 310. The limit block 39 is arranged around the second end of the fixed rod 34 and is located on the side of the initial position of the fixed rod 34, which is used to limit the fixed rod 34 to prevent the fixed rod 34 from rotating to a range beyond the starting position.The first sensor 37 is disposed at the second position side of the push rod 32, and is used to output a lock sensing signal to the controller of the lock member when detecting that the cart 1 enters its sensing area. The second sensor 38 is disposed in front of the conveying direction of the conveying device 2 relative to the first sensor 37, and is used to output an unlock sensing signal to the controller of the lock member when detecting that the cart 1 enters its sensing area.

[0026] The working principle of the above cart spacing limiting device 3 is: Attached Figure 2 As shown, before the car stop bar 17 of the cart 1 enters the working channel 214, the push rod 32 is in the first position, at which time the push rod 32 closes the working channel 214, that is, the push rod 32 is horizontally blocked at the entrance of the working channel 214, and the stop bar 33 is located outside the conveying channel, for example, above the right guide bar 23, the fixed rod 34 is in its starting position defined by the limit block 39, and the electromagnet 35 is not energized.

[0027] As attached Figure 3 As shown, as the cart 1 moves forward, the car stop bar 17 enters the working channel 214 and contacts the push rod 32, thereby pushing the push rod 32, and the car stop bar 17 is within the angle between the push rod 32 and the stop rod 33. The push rod 32 drives the rotating rod 31 to rotate under the push of the car stop bar 17, and the push rod 32 rotates from the first position to the second position. At the same time, the stop rod 33 and the fixed rod 34 rotate synchronously with the rotating rod 31, and the fixed rod 34 rotates from the initial position to its locking position. The fixed rod 34 gradually approaches the electromagnet 35, and the spring is stretched.

[0028] As attached Figure 4 As shown; the car stop bar 17 of the cart 1 pushes the push rod 32 to the second position, at which time the push rod 32 is already outside the conveying channel, for example, above the right guide bar 23, and the stop bar 33 rotates to the position of closing the working channel 214, that is, the stop bar 33 is horizontally blocked at the entrance of the working channel 214, and the cart 1 enters the sensing area of ​​the first sensor 37 at this position, and the first sensor 37 outputs a locking sensing signal to the controller. After receiving the locking sensing signal, the controller controls the electromagnet 35 to be energized, and the electromagnet 35 generates a magnetic force to attract the fixed rod 34. At this time, the car stop bar 17 is no longer needed to push the push rod 32, and the stop bar 33 can still block the working channel 214. If another cart 1 enters the conveying device 2 later, its car stop bar 17 will be blocked by the stop bar 33, and the cart 1 cannot enter the conveying device 2.

[0029] As attached Figure 5As shown, the cart 1 is transported forward on the conveying device 2. When it moves to the position of the second sensor 38, the second sensor 38 senses that the cart 1 has entered its sensing area, and then outputs an unlocking sensing signal to the controller. After receiving the unlocking sensing signal, the controller controls the electromagnet 35 to cut off the power, so that the electromagnet 35 no longer attracts the fixed rod 34. The fixed rod 34 rotates to its initial position under the tension of the spring to achieve reset, and the rotating rod 31 also drives the blocking rod 33 and the push rod 32 to reset, and return to the position state before the cart 1 enters the conveying device 2. When the next cart 1 enters, the above process is repeated.

[0030] When the distance between the first sensor 37 and the second sensor 38 changes, the reset time of the blocking rod 33 also changes accordingly, and the spacing between the carts 1 entering the conveying device 2 also changes accordingly.

[0031] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A trolley spacing limiting device, arranged at the starting section of a conveying device for conveying a trolley, the trolley comprising a trolley stop bar, the conveying device having a working channel for the trolley stop bar to move, characterized in that: The cart spacing limiting device comprises: Rotating a rotating rod disposed on the conveying device; A push rod disposed at the first end of the rotating rod and used to cooperate with the vehicle stop bar to rotate between a first position and a second position to drive the rotating rod to rotate; A blocking rod disposed at the first end of the rotating rod and rotating synchronously with the rotating rod; A fixed rod disposed at the second end of the rotating rod and driven by the rotating rod to rotate between an initial position and a locking position; A locking member disposed at a side of the locking position and capable of locking the fixed rod at the locking position based on a locking sensing signal or unlocking the fixed rod based on an unlocking sensing signal; A reset member disposed at the side of the initial position and used to provide the fixed rod with a pulling force required for rotating from the locking position to the unlocking position; A first sensor disposed at the side of the second position and configured to output the locking sensing signal when detecting that the cart enters its sensing area; A second sensor disposed in front of the conveying direction of the conveying device relative to the first sensor and used to output the unlocking sensing signal when detecting that the cart enters its sensing area; When the push rod is in the first position, the push rod closes the working channel, the baffle rod is located outside the conveying channel, and the fixed rod is in the initial position; when the vehicle baffle bar enters the working channel and pushes the push rod, the push rod rotates from the first position to the second position, and the fixed rod rotates from the initial position to the locking position; when the push rod is in the second position, the push rod is located outside the conveying channel, the baffle rod closes the working channel, the fixed rod rotates to the locking position, and the cart enters the sensing area of ​​the first sensor.

2. The trolley spacing limiting device according to claim 1, characterized in that: The cart spacing limiting device also includes a limiting block arranged on the side of the starting position and used to limit the fixed rod.

3. The trolley spacing limiting device according to claim 1, characterized in that: The locking member includes an electromagnet and a controller for controlling power on or off of the electromagnet based on the locking sensing signal or the unlocking sensing signal. The first sensor and the second sensor are respectively connected to the controller.

4. The cart spacing limiting device according to claim 1, characterized in that: The starting section of the conveying equipment has a starting top platform and a starting bottom platform arranged below the starting top platform. The axis of the rotating rod is perpendicular to the starting top platform and the starting bottom platform. The first end of the rotating rod is located on the starting top platform, and the second end of the rotating rod is located on the starting bottom platform.

5. The trolley spacing limiting device according to claim 4, characterized in that: The axis of the push rod, the axis of the blocking rod, and the axis of the fixed rod are all perpendicular to the axis of the rotating rod, and on a plane perpendicular to the axis of the rotating rod, the projection of the axis of the push rod and the projection of the axis of the blocking rod intersect.

6. The cart spacing limiting device according to claim 1, characterized in that: The reset member comprises a spring and a bracket arranged on the conveying device, and two ends of the spring are respectively connected to the fixed rod and the bracket.

7. A conveying device for conveying a cart including a cart stop bar, characterized in that: The conveying device comprises a trolley spacing limiting device as claimed in any one of claims 1 to 6.

8. The conveying device according to claim 7, characterized in that: The conveying equipment includes a truss, a left guide bar arranged on the truss, a right guide bar arranged on the truss, a plurality of transmission wheels arranged in the truss, an electric motor connected to the transmission wheel, a conveying chain cooperated with the transmission wheel for transmission, a plurality of chain baffles arranged on the conveying chain and capable of cooperating with the vehicle baffle, and wheel road bars respectively arranged on the left side of the left guide bar and the right side of the right guide bar for movement of the wheels of the cart, the left guide bar and the right guide bar are arranged in parallel, the working channel is formed between the left guide bar and the right guide bar, and a part of the conveying chain is transmitted in the working channel.

9. The conveying device according to claim 7, characterized in that: The transmission wheel comprises a driving wheel and a driven wheel, and the motor is connected to the driving wheel through a belt transmission.

10. The conveying device according to claim 7, characterized in that: The wheel road strips include a front wheel road strip for moving the front wheels of the cart and a rear wheel road strip for moving the rear wheels of the cart, and a portion of the front wheel road strip and a portion of the rear wheel road strip have a height difference.

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