Aerial rail trolley

Abstract

According to the aerial rail trolley, a solution that a double-door safety roller shutter is synchronously driven on the basis of a group of driving units is provided, so that the space utilization rate of a supporting rod row is remarkably increased, and the height of an overall frame of equipment is reduced; therefore, the purposes of improving the body stability of the trolley during acceleration and deceleration operation and reducing the operation distance of the support rod row and the opening and closing time of the safety door are achieved. A safety roller shutter assembly is arranged at the bottom of a trolley frame of the aerial rail trolley; the safety roller shutter assembly is provided with a safety door frame, two sets of synchronous belts synchronously driven by a set of motor gear driving assembly to operate are arranged on the two sides of the safety door frame, a plurality of sets of supporting rods transversely penetrate through the two sets of synchronous belts, and the synchronous belts on the two sides and the supporting rods jointly form a safety roller shutter. Each set of synchronous belts comprises two synchronous belts which operate in a closed loop mode and are opposite in operation direction, and four synchronous belts in the two sets of synchronous belts are driven by the same set of motor gear driving assembly to operate.

Description

Technical Field

[0001] The present application relates to a rail trolley for aerial transportation and connection of goods, belonging to the field of automated production and logistics warehousing. Background Art

[0002] With the rapid development of the logistics and transportation industry, EMS aerial rail trolleys have been widely used due to their features of saving space, making full use of space resources and automatically lifting / unloading materials.

[0003] The EMS aerial rail trolley carries out cargo transportation during rail operation. When solving the problem of falling prevention during high-altitude transportation of goods, it is usually adopted to add a mesh cover or roller shutter device at the bottom of the equipment operation area to provide a safety protection range.

[0004] On the one hand, the existing aerial rail trolley cannot add a protective net at the pickup and delivery stations, and the highest risk of cargo falling due to inertia is at the acceleration and deceleration stage of the pickup and delivery stations. On the other hand, adding a safety rolling door at the bottom of the frame requires a larger installation height space for the safety door curtain to facilitate the smooth opening and closing of the bottom support rod row that constitutes the skeleton in the set direction, which leads to the problem of low space utilization of the safety door, and further affects the increase in the height and deadweight of the overall equipment.

[0005] In view of this, this patent application is proposed. Utility Model Content

[0006] The utility model proposes an aerial rail trolley. In order to solve the problems existing in the above-mentioned prior art, a solution based on a group of drive units to synchronously drive a double-door safety roller shutter is proposed, so as to significantly increase the space utilization rate of the support rod row and reduce the overall frame height of the equipment, thereby achieving the purpose of improving the body stability of the trolley during acceleration and deceleration operation and reducing the running distance of the support rod row and the opening and closing time of the safety door.

[0007] In order to achieve the above-mentioned design purpose, the aerial rail trolley includes a trolley frame, and a conveying drive part set arranged on the trolley frame and driving the trolley as a whole to run along the track to transport goods. A safety roller shutter assembly is arranged at the bottom of the trolley frame; the safety roller shutter assembly has a safety door frame, and two groups of synchronous belts that are synchronously driven and operated by a group of motor gear drive transmission components are arranged on both sides of the safety door frame, and a group of support rods are horizontally passed between the two groups of synchronous belts. The safety roller shutter is composed of the synchronous belts and the support rods on both sides; each group of synchronous belts includes 2 synchronous belts that are each closed-loop operated and run in opposite directions, and the four synchronous belts in the two groups of synchronous belts are driven and operated by the same group of motor gear drive transmission components.

[0008] Furthermore, the motor gear drive assembly includes a servo reduction motor, the output end of the servo reduction motor is coaxially connected to the driving pulley, the driving pulley is connected to the transmission pulley through a closed-loop transmission belt, and two groups of transmission pulleys on both sides of the safety door frame are respectively sleeved on the two ends of the same group of transmission shafts; two groups of gears that are meshed and connected to each other are arranged on the upper shaft of the safety door frame, and one group of gears is simultaneously sleeved on the transmission shaft; a group of synchronous pulleys is respectively sleeved on the rotating shaft of each group of gears, and two adjacent groups of synchronous pulleys are respectively wound around and connected with two synchronous belts in the same group of synchronous belts; an array of driven wheel sleeves is arranged on the upper shaft of the safety door frame, and two synchronous belts in the same group of synchronous belts are respectively closed-loop wound between the array of driven wheel sleeves and the synchronous pulleys.

[0009] Furthermore, the driven wheel sleeve includes an axle, on which a driven wheel is arranged through a bearing sleeve, a synchronous belt is wound around the driven wheel, a retaining spring is packaged on the outside of the bearing, and a first screw group is used to fasten the outer end of the axle.

[0010] Furthermore, a driven wheel tensioning assembly for winding and connecting a synchronous belt is provided on the upper shaft of the safety door frame.

[0011] Furthermore, the driven wheel tensioning assembly includes a tensioning wheel group whose axis is arranged on the safety door frame, and a fixed block installed by a second screw group. One end of the pull block is sleeved on the end of the rotating shaft of the tensioning wheel group, and the other end of the pull block is connected to the fixed block by a set of locking nuts and adjusting screws that are threaded together.

[0012] Furthermore, an array of inductive limit switch components is arranged on the safety door frame.

[0013] In summary, the aerial rail trolley proposed in this application has the following advantages:

[0014] 1. The present application is based on the power output of a group of driving units to synchronously drive the operation of two groups of safety doors, that is, to realize a double-door transmission mode, which can not only significantly increase the space utilization rate of the support rod row, but also effectively reduce the overall frame height of the trolley and the stability performance during acceleration and deceleration.

[0015] 2. The double-door safety roller shutter adopted in this application can reduce the running distance and time by half during the opening and closing process, effectively improving the overall operating efficiency of the rail trolley.

[0016] 3. The present application realizes power transmission through a gear mechanism, and the two groups of support rods are synchronously transported in opposite directions. Not only is the structure compact, but also the tensioning degree during operation is ensured by their respective tensioning mechanisms, and the safety factor is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application will now be further described with reference to the following drawings;

[0018] Figure 1 It is a schematic diagram of the structure of the aerial rail car;

[0019] Figure 2 It is a schematic diagram of the structure of the safety roller shutter assembly;

[0020] Figure 3 It is a structural schematic diagram of the drive transmission component;

[0021] Figure 4 is a cross-sectional view of the driven wheel sleeve;

[0022] Figure 5 This is a schematic diagram of the structure of the driven wheel tensioning assembly;

[0023] In the above drawings, 1-motor gear drive assembly, 2-safety door frame, 3-driven wheel sleeve, 4-driven wheel tensioning assembly, 5-support rod, 6-synchronous belt, 7-inductive limit switch assembly, 8-running track, 9-trolley frame, 10-transmission drive sleeve;

[0024] 11-motor fixing plate, 12-servo reduction motor, 13-driving pulley, 14-transmission pulley, 15-transmission belt, 16-transmission shaft, 17-bearing seat plate, 18-gear, 19-synchronous pulley;

[0025] 31-driven wheel, 32-wheel axle, 33-bearing, 34-first screw group, 35-circlip;

[0026] 41-tensioning wheel assembly, 42-pull block, 43-fixing block, 44-second screw assembly, 45-locking nut, 46-adjusting screw. DETAILED DESCRIPTION

[0027] Embodiment 1, as Figures 1 to 5 As shown, the aerial rail trolley proposed in this embodiment includes a trolley frame 9, and a conveying drive unit 10 arranged on the trolley frame 9 and driving the trolley as a whole to run along the running track 8 to transport goods, and a safety roller shutter assembly is arranged at the bottom of the trolley frame 9;

[0028] The safety roller shutter assembly comprises a safety door frame 2 fixedly connected to a trolley frame 9, two sets of synchronous belts 6 driven synchronously by a set of motor gear drive components 1 are arranged on both sides of the safety door frame 2, and a set of support rods 5 are horizontally passed between the two sets of synchronous belts 6, and the safety roller shutter is composed of the synchronous belts 6 and the support rods 5 on both sides; when the aerial rail trolley runs to the picking and placing station, the above-mentioned safety roller shutter is closed from the bottom of the frame to prevent the goods from falling from the trolley and causing injury accidents.

[0029] The difference from the prior art is that each set of synchronous belts 6 includes two synchronous belts which run in closed loops and in opposite directions, and the four synchronous belts in the two sets of synchronous belts 6 are driven by the same set of motor gear drive assembly 1.

[0030] Specifically, the motor gear drive assembly 1 includes a servo reduction motor 12 installed on one side of the safety door frame 2 through a motor fixing plate 11, the output end of the servo reduction motor 12 is coaxially connected to a driving pulley 13 whose shaft is arranged on the safety door frame 2, the driving pulley 13 is connected to a driving pulley 14 whose shaft is arranged on the safety door frame 2 through a closed-loop transmission belt 15, and two groups of driving pulleys 14 on both sides of the safety door frame 2 are respectively sleeved on both ends of the same group of transmission shafts 16; under the drive of the servo reduction motor 12, through the transmission of the driving pulleys 13, the transmission belts 15 and the transmission pulleys 14 on both sides, a group of transmission shafts 16 simultaneously drives the synchronous operation of two groups of synchronous belts 6;

[0031] Two sets of gears 18 meshing with each other are provided on the shaft of the bearing seat plate 17 fixedly connected to the safety door frame 2, and one set of gears 18 is also sleeved on the transmission shaft 16; a set of synchronous pulleys 19 are respectively sleeved on the rotating shaft of each set of gears 18, and two adjacent sets of synchronous pulleys 19 are respectively wound around and connected with two synchronous belts in the same set of synchronous belts 6.

[0032] Correspondingly, a plurality of driven wheel sleeves 3 are axially arranged on the safety door frame 2 , and two synchronous belts in the same group of synchronous belts 6 are respectively wound in a closed loop between the plurality of driven wheel sleeves 3 and the synchronous belt pulley 19 .

[0033] In order to improve the guiding smoothness of the synchronous belt during operation, the driven wheel sleeve 3 includes an axle 32 axially arranged on the safety door frame 2, a driven wheel 31 is sleeved on the axle 32 through a bearing 33, a synchronous belt is wound around the driven wheel 31, a retaining spring 35 is packaged on the outside of the bearing 33, and a first screw group 34 is used to fasten the outer end of the axle 32.

[0034] In order to increase the surface tension of each synchronous belt during operation, a driven wheel tensioning assembly 4 for winding and connecting the synchronous belt is axially provided on the safety door frame 2; the driven wheel tensioning assembly 4 includes a tensioning wheel group 41 axially provided on the safety door frame 2, and a fixed block 43 installed by a second screw group 44, one end of the pull block 42 is sleeved on the rotating shaft end of the tensioning wheel group 41, and the other end of the pull block 42 is connected to the fixed block 43 by a group of locking nuts 45 and adjusting screws 46 that are screwed to each other; the distance between the fixed block 43 and the rotating shaft end of the tensioning wheel group 41 can be changed by manually adjusting the locking nuts 45. Since the fixed block 43 is fixed, the position of the tensioning wheel group 41 relative to the safety door frame 2 can be changed, and finally the tension on the surface of the synchronous belt can be adjusted.

[0035] In order to improve the control accuracy of the safety roller shutter assembly when operating at the trolley picking up and placing goods, an array inductive limit switch assembly 7 can be provided on the safety door frame 2 to correspondingly monitor and limit the opening and closing positions of the two-part synchronous belt 6 with the support rod 5.

[0036] On both sides of the safety door frame 2, two sets of synchronous belts 6 are driven by the transmission shaft 16 of the same set of motor gear drive assembly 1 to run synchronously; in each set of synchronous belts 6, since the rotation directions of the two sets of gears 18 meshing with each other are opposite, the running directions of the two synchronous belts are opposite, so the four synchronous belts passing through the array of support rods 5 form a pair of roller shutters distributed laterally. Driven by the servo reduction motor 12, the running directions of the two sets of roller shutters are opposite, so that the bottom of the aerial track trolley can be opened or closed at the same time, providing safety protection during the process of picking up and putting away goods.

[0037] The above contents and the embodiments given in the accompanying drawings are only preferred solutions for achieving the purpose of the utility model. For those skilled in the art, they can be inspired by this and directly deduce other alternative structures that conform to the design concept of the utility model. Other structural features obtained thereby should also belong to the scope of the solution described in the utility model.

Claims

1. An aerial rail trolley, characterized in that: It includes a trolley frame and a conveying driving part set on the trolley frame and driving the trolley as a whole to run along the track to convey goods. A safety roller shutter assembly is set at the bottom of the trolley frame; The safety rolling shutter assembly has a safety door frame, and two sets of synchronous belts driven by a set of motor gear transmission components are arranged on both sides of the safety door frame. A set of supporting rods are arranged transversely between the two sets of synchronous belts, and the safety rolling shutter is composed of the synchronous belts and the supporting rods on both sides. Each set of synchronous belts includes two synchronous belts which are respectively operated in a closed loop and in opposite directions. The four synchronous belts in the two sets of synchronous belts are driven and operated by the same set of motor gear drive components.

2. The aerial rail vehicle according to claim 1, characterized in that: The motor gear drive assembly includes a servo reduction motor, the output end of the servo reduction motor is coaxially connected to the driving pulley, the driving pulley is connected to the driving pulley through a closed-loop transmission belt, and the two sets of driving pulleys on both sides of the safety door frame are respectively sleeved on the two ends of the same set of transmission shafts; Two sets of gears meshing with each other are arranged on the upper shaft of the safety door frame, one set of gears is sleeved on the transmission shaft at the same time; a set of synchronous belt pulleys is sleeved on the rotating shaft of each set of gears, and two adjacent sets of synchronous belt pulleys are respectively wound around and connected with two synchronous belts in the same set of synchronous belts; A plurality of driven wheel sleeves are arranged on the upper shaft of the safety door frame, and two synchronous belts in the same group of synchronous belts are respectively wound in a closed loop between the plurality of driven wheel sleeves and the synchronous belt pulleys.

3. The aerial rail vehicle according to claim 2, characterized in that: The driven wheel sleeve includes an axle, on which a driven wheel is arranged through a bearing sleeve, a synchronous belt is wound around the driven wheel, a retaining spring is packaged on the outside of the bearing, and the outer end of the axle is fastened with a first screw group.

4. The aerial rail vehicle according to claim 2 or 3, characterized in that: A driven wheel tensioning assembly for winding and connecting a synchronous belt is arranged on the upper shaft of the safety door frame.

5. The aerial rail vehicle according to claim 4, characterized in that: The driven wheel tensioning assembly includes a tensioning wheel group whose axis is arranged on the safety door frame, and a fixed block installed by a second screw group. One end of the pull block is sleeved on the end of the rotating shaft of the tensioning wheel group, and the other end of the pull block is connected to the fixed block by a set of locking nuts and adjusting screws that are threaded together.

6. The aerial rail vehicle according to claim 1, characterized in that: An array of inductive limit switch components is arranged on the safety door frame.

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