An intelligent lifting trolley seat height adjustment system

Abstract

The application relates to a smart lifting trolley seat height adjusting system and a trolley seat height adjusting method, which comprises the following steps: S1, determining a target working height interval of goods; S2, dividing the target working height interval into levels; S3, dividing the positions of the goods stacked on the trolley into a corresponding number of stacking areas according to the number of the divided levels; S4, independently monitoring the goods in each stacking area in real time; S5, judging the height interval corresponding to the goods taken away by an operator according to the real-time monitoring result; and S6, adjusting the trolley seat to a corresponding height according to the corresponding height interval. The trolley is integrated with the functions of a seat and a ladder by arranging an up-and-down adjustable seat plate on the trolley. The turning action of the seat plate is associated with the braking action of a brake assembly, so that the trolley is in a stable locking state as long as the seat plate is used by an operator, and the working safety of the operator is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent adjustment of trolleys, in particular to an intelligent lifting trolley seat height adjustment system. BACKGROUND

[0002] Trolleys are commonly used in daily life as a carrying tool, and are usually used for short-distance transportation of goods, and are widely used in logistics and warehousing, construction and construction, retail and supermarkets, hospitals and scientific research, etc.

[0003] In the prior art, in different application scenarios, trolleys have developed various auxiliary functions from the original carrying function, such as electric power assistance, automatic braking, etc. These functions are generally improvements and enhancements to the carrying function of the trolley, and the trolley still only performs the carrying function, and after the goods are delivered to the position, the work is completed. Then the worker gradually takes out the goods in the trolley and then operates or stacks them, for example, an administrator in an archive room takes out files from the trolley for sorting or stacking, a worker on an assembly line takes out parts from the trolley for processing, a supermarket employee takes out goods from the trolley and places them on the shelf, etc. In these scenarios, in order to facilitate the operator to perform the next operation on the goods, a seat or a ladder is usually provided to facilitate the operator to work in a sitting state or to enable the operator to operate the goods at different heights. This configuration is a common configuration in the above application scenarios, but the use of multiple tools such as trolleys, seats and ladders makes management more complex, and in some narrow scenarios, multiple tools cannot be configured simultaneously, which reduces the work efficiency of the operator.

[0004] Therefore, the inventor has designed a new intelligent lifting trolley seat height adjustment system to overcome the above problems. SUMMARY

[0005] The main purpose of the present application is to provide an intelligent lifting trolley seat height adjustment system to solve the problem that trolleys need to be matched with seats or ladders to meet the work requirements in the related art.

[0006] In order to achieve the above purpose, the present application provides an intelligent lifting trolley seat height adjustment system and a trolley seat height adjustment method, which comprises the following steps: S1, determining a target working height range of the goods; S2, dividing the target working height range into levels; S3, dividing the positions of the goods stacked on the trolley into a corresponding number of stacking areas according to the number of levels; S4, independently monitoring the goods in each stacking area in real time; S5, determining the height range corresponding to the goods taken out by the operator according to the real-time monitoring result; and S6, adjusting the trolley seat to the corresponding height according to the corresponding height range.

[0007] Preferably, the stroller comprises a stroller body, a storage basket fixedly arranged on the stroller body, support plates symmetrically arranged on both sides of the storage basket and capable of sliding up and down, a seat plate rotatably arranged at the rear end of the two support plates, a lifting assembly fixedly arranged between the support plates and the stroller body, two rear wheel assemblies symmetrically fixedly arranged at the bottom rear end of the stroller body, a brake assembly fixedly arranged on the stroller body, an input end of the brake assembly fixedly connected with one end of a pull cable, the other end of the pull cable fixedly connected with the seat plate, and an adjusting assembly fixedly arranged on the stroller body for adjusting the pull cable to always be in a taut state; further comprising a controller and a plurality of weighing units, the weighing units monitor the weight of goods in the storage basket, each weighing unit monitors the weight change of goods in a region, and each weighing unit corresponds to a different height of the seat plate, when goods are taken out from the storage basket, the controller judges the gear of the weight of goods according to the weight monitored by the weighing units, and the controller lowers the seat plate to the height corresponding to the gear of the weight of goods in the storage basket through the lifting assembly; the adjusting assembly comprises at least one follower wheel, the pull cable passes around all the follower wheels, and the pull cable on both sides of each follower wheel is parallel, and the controller adjusts the distance S of the follower wheel moving along the parallel segment of the pull cable in real time according to the height H of the seat plate being raised / lowered.

[0008] Preferably, the adjusting assembly comprises one follower wheel, a first telescopic member, and two guide wheels, the stroller body is fixedly provided with side plates on both sides, the follower wheel is slidingly arranged on the side plates, the guide wheels are fixedly arranged on the side plates, the pull cable passes around the first guide wheel, the follower wheel, and the second guide wheel in sequence, the telescopic end of the first telescopic member is fixedly connected with the follower wheel, and the relationship between the distance S of the follower wheel moving and the height H of the seat plate being raised / lowered is S=0.5H.

[0009] Preferably, the first telescopic member is a gas cylinder, and the first telescopic member is fixedly arranged on the side plates.

[0010] Preferably, the lifting assembly comprises a scissor arm, a driving member, and two groups of slide rails, one group of the slide rails is fixedly arranged at the bottom of the support plate, the other group of the slide rails is fixedly arranged on the stroller body, the top and bottom of the scissor arm are rotatably provided with slide blocks, the slide blocks of the top and bottom are slidingly connected with the two groups of slide rails respectively, the driving member is fixedly arranged on the stroller body, and the output end of the driving member is fixedly connected with the slide block at the bottom.

[0011] Preferably, the driving member comprises two gas cylinders, and the output ends of the two gas cylinders are fixedly connected with the two slide blocks at the bottom of the scissor arm respectively.

[0012] Preferably, the brake assembly comprises a rotating rod, a sleeve and a latch, the rotating rod is rotatably arranged on the stroller body, the sleeve is fixedly arranged on the bottom of the stroller body, the latch is slidingly arranged in the sleeve, one end of the latch is opposite to the rear wheel assembly, and the other end of the latch is fixedly arranged with an elastic reset member between the other end of the latch and the end of the sleeve, one end of the rotating rod is fixedly connected with the cable, and the other end of the rotating rod is fixedly arranged with a pressing rod, and the side wall of the pressing rod abuts against the end of the latch away from the rear wheel assembly.

[0013] Preferably, the inside of the storage basket is fixedly arranged with a plurality of unit cells, and the weighing unit comprises a plurality of pressure sensors, and the pressure sensors are fixedly arranged on the bottom of the unit cells.

[0014] Preferably, two guide columns are further arranged, the two guide columns are symmetrically fixedly arranged on the stroller body, a connecting rod is fixedly arranged between the two support plates, and the two ends of the connecting rod are slidingly connected with the guide columns.

[0015] Preferably, handles are fixedly arranged on the two guide columns, a blocking rod is fixedly arranged between the two handles, the blocking rod is used for blocking and limiting when the seat plate is upwardly turned over, and a locking assembly for fixing the seat plate is further fixedly arranged on the handle.

[0016] Preferably, the locking assembly comprises a locking groove, the locking groove is fixedly arranged on the inner side of the handle, a blocking block is slidingly arranged in the locking groove, a spring is fixedly arranged between the blocking block and the inner bottom surface of the locking groove, and the outer end of the blocking block has a circular arc surface.

[0017] The intelligent lifting stroller seat height adjusting system has the following beneficial effects compared with the prior art:

[0018] By arranging the seat plate capable of being adjusted up and down on the stroller, the stroller integrates the functions of the seat and the ladder, and a single tool can meet the working requirements of the operator, thereby reducing the management difficulty of the tool. By associating the turning action of the seat plate with the braking action of the brake assembly, the stroller is in a stable locking state as long as the operator uses the seat plate, thereby ensuring the working safety of the operator. By arranging the controller and the weighing unit, the height of the seat can be automatically adjusted when the weight of the goods in the storage basket changes, so that the operator is always in an appropriate working posture, which is more humanized. By arranging the adjusting assembly and the controller in electric connection, the cable is always in a normal working state of being taut during the up and down movement of the seat plate, thereby ensuring the stability of the action association between the turning of the seat plate and the braking of the brake assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The illustrative embodiments of the application are described and explained with additional specificity and detail through the use of the accompanying drawings in which:

[0020] Figure 1 is a method flow chart of the present application;

[0021] Figure 2 is a whole structure diagram of the present application;

[0022] Figure 3 is a structure diagram at the lifting assembly of the present application (one side plate is hidden);

[0023] Figure 4 is an exploded structure diagram of the present application;

[0024] Figure 5 is a structure diagram at the rear wheel assembly of the present application;

[0025] Figure 6 is an exploded structure diagram at A in the present application Figure 5 ;

[0026] Figure 7 is a structure diagram at the storage basket of the present application;

[0027] Figure 8 is an enlarged structure diagram at B in the present application Figure 4 .

[0028] Wherein: 1, stroller body; 2, storage basket; 3, support plate; 4, seat plate; 5, rear wheel assembly; 6, pull cable; 8, follow-up wheel; 9, first telescopic piece; 10, guide wheel; 11, side plate; 12, scissor arm; 13, driving piece; 14, slide rail; 15, sliding block; 16, rotating rod; 17, sleeve; 18, latch; 19, elastic reset piece; 20, pressing rod; 21, unit cell; 22, pressure sensor; 23, guide column; 24, connecting rod; 25, handle; 26, blocking rod; 27, locking groove; 28, blocking block; 29, spring. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", and the like in the description of the application and in the appended claims are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of these terms herein is merely for distinguishing between similar elements and is not meant to convey a strict chronological order, unless explicitly indicated to be such. Furthermore, the use of the terms "including", "containing", "comprising", "having" and the like are meant to be inclusive, unless otherwise indicated. That is, these terms are used in their broadest sense to mean that the claimed subject matter can include, contain, comprise, have or otherwise have these elements, but not limited to these elements.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Also, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0033] In addition, the meaning of the term "a plurality of" should be two and more than two.

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] As Figures 1 to 8As shown, an intelligent lifting trolley seat height adjustment system includes a trolley and a trolley seat height adjustment method: S1, determine the target working height interval of the goods; S2, divide the target working height interval into levels; S3, divide the position of the goods placed on the trolley into a corresponding number of storage areas according to the number of levels; S4, real-time independent monitoring of the goods in each storage area; S5, determine the height interval corresponding to the goods taken away by the operator according to the real-time monitoring result; S6, adjust the trolley seat to the corresponding height according to the corresponding height interval. Specifically, whether it is a supermarket shelf, a library bookshelf, or a factory processing assembly line, goods have different working heights, so the target working height interval of the goods needs to be determined first, and then the target working height interval is classified according to the comfortable working range of the human body, for example, it is more comfortable to place goods within a range of 40 cm above and below the hands when standing, so divide the target height interval by 40 cm, for example, if the target working height interval range is 200 cm, it can be divided into five levels, at this time, place the corresponding goods on the five areas on the storage basket on the trolley, and monitor the goods in each area separately, the monitoring method in this embodiment uses the weighing method, in addition to this, the laser sensing distance method can also be used to determine which area of goods is reduced, find the matching target working height interval according to the area of the reduced goods, and then adjust the trolley seat or the pedal to the corresponding height to meet the user's needs.

[0036] The trolley comprises a trolley body 1, a storage basket 2 is fixedly arranged on the trolley body 1, symmetrical support plates 3 capable of sliding up and down are arranged on both sides of the storage basket 2, seat plates 4 are rotatably arranged at the rear ends of the two support plates 3, a lifting assembly is fixedly arranged between the support plates 3 and the trolley body 1, two rear wheel assemblies 5 are fixedly arranged at the bottom of the rear end of the trolley body 1, a brake assembly is also fixedly arranged on the trolley body 1, the input end of the brake assembly is fixedly connected with one end of a pull cable 6, the other end of the pull cable 6 is fixedly connected with the seat plate 4, an adjusting assembly for adjusting the pull cable 6 to always be in a taut state is also fixedly arranged on the trolley body 1; a controller and a plurality of weighing units are further included, the weighing units monitor the weight of goods in the storage basket 2, each weighing unit monitors the weight change of goods in one area, and each weighing unit corresponds to a different height of the seat plate 4, when goods are taken out from the storage basket 2, the controller judges the gear in which the weight of the goods is located according to the weight monitored by the weighing units, and the controller lowers the seat plate 4 to the height corresponding to the gear in which the weight of the goods in the storage basket 2 is located through the lifting assembly according to the gear in which the weight of the goods in the storage basket 2 is located; the adjusting assembly comprises at least one follow-up wheel 8, the pull cable 6 passes around all the follow-up wheels 8, and the pull cable 6 on both sides of each follow-up wheel 8 is parallel, and the controller adjusts the distance S through which the follow-up wheel 8 moves along the extension direction of the parallel section of the pull cable 6 in real time according to the height H through which the seat plate 4 is raised / lowered.

[0037] Specifically, when the handcart is used to transport goods, the goods are placed in the storage basket 2, so that the weighing unit can sense the change in the weight of the goods in the storage basket 2. When the operator pushes the goods to a work position such as an operating table, a shelf or a workbench, if the operator needs to sit or step up, the seat plate 4 can be flipped to a horizontal position, so that the entire seat plate 4 is supported on the two support plates 3. At this time, the operator can sit on the seat plate 4 or step on the seat plate 4 to work. When taking out the goods from the storage basket 2, it can be taken from the gap between the seat plate 4 and the storage basket 2, or an opening for taking out goods can be provided on the storage basket 2. The specific shape of the storage basket 2 is not limited here, as long as the technical solution that allows the operator to take goods from the storage basket 2 while sitting on the seat plate 4 or stepping on the seat plate 4 can be applied here. Since the bottom of the handcart is a wheel, if the operator sits on the seat plate 4 or steps on the seat plate 4 and the handcart moves or shakes, it is easy to cause danger to the operator. The conventional handcart brake device needs to be operated manually by the operator, and it is easy to forget to operate, so there is still a risk of vehicle movement. Therefore, in this embodiment, the brake system is linked to the seat plate 4 through the cable 6, and the brake assembly is linked to the rear wheel assembly 5 by flipping the seat plate 4 to stop and lock the rear wheel assembly 5. As long as the operator needs to use the seat plate 4, the handcart can be guaranteed to be in a stopped state, ensuring that the handcart does not move whether the operator is sitting on the seat plate 4 or stepping on the seat plate 4, thereby indirectly ensuring the safety of the operator.

[0038] During the stacking of goods, due to the limitation of the weight or quantity of goods that can be stacked on each layer of the shelf, each layer needs to be stacked (similar to file arrangement, part processing, etc., all of which need to be operated at different heights), at different operating heights, if the height of the seat plate 4 does not change, it will be inconvenient for the operator (need to bend over or stand on tiptoe, etc.), and the operator cannot work in a comfortable posture. Therefore, the height of the seat plate 4 is adjusted by the lifting assembly, so that the operator can always work in a comfortable posture. The operator usually cannot adjust the height of the seat plate 4 while stacking goods, so it is more user-friendly to set the seat plate 4 to automatically adjust. Specifically, since each good needs to be stacked at different heights, its position in the storage basket is also different. When the operator takes goods from a certain area, the weight measured by the weighing unit in that area will change and it will be determined which area the goods are taken from, and the matching work height interval is found. At this time, the controller automatically adjusts the height of the seat plate 4 through the lifting mechanism.

[0039] In the process of moving up and down on the seat plate 4, since the seat plate 4 is connected with the brake assembly through the cable 6, the cable 6 can be loose or broken, so that the overturning action of the seat plate 4 cannot stop the vehicle by the brake assembly, thereby causing the risk of vehicle shaking, therefore, in order to ensure that the cable 6 is always in a suitable taut working state, the movement track of the cable 6 also needs to be adjusted, when the seat plate 4 moves upward, the upper end of the cable 6 also moves upward, at this time the controller controls the movement of the follower wheel 8, so that the middle track of the cable 6 is shortened, thereby making the cable 6 always keep taut state, preferably making the part of the cable 6 on both sides of the follower wheel 8 parallel, and the movement direction of the follower wheel 8 is the same as the axial direction of the cable 6 at this place, so as to find the proportional relationship between the moving distance of the seat plate 4 and the moving distance of the follower wheel 8, so that the follower wheel 8 can be more accurately adjusted to make the cable 6 not easy to loosen or break.

[0040] In the embodiment, by setting the seat plate 4 which can be adjusted up and down on the trolley, the trolley integrates the functions of seat and ladder, so that a single tool can meet the working needs of the operator, and the management difficulty of the tool is reduced. By associating the overturning action of the seat plate 4 with the braking action of the brake assembly, the trolley is in a stable locking state as long as the operator uses the seat plate 4, which ensures the working safety of the operator. By setting the controller and the weighing unit, the height of the seat can be automatically adjusted when the weight of the goods in the storage basket 2 changes, so that the operator is always in a suitable working posture, which is more humanized. By setting the adjustment assembly and the controller in electrical connection, the cable 6 is always in a taut normal working state in the process of moving up and down of the seat plate 4, which ensures the stability of the action association between the overturning of the seat plate 4 and the stopping of the brake assembly.

[0041] The adjusting assembly comprises the follower wheel 8, the first telescopic member 9 and the two guide wheels 10, the side plates 11 are fixedly arranged on the two sides of the stroller body 1, the follower wheel 8 is slidingly arranged on the side plate 11, the guide wheels 10 are fixedly arranged on the side plate 11, the cable 6 passes the first guide wheel 10, the follower wheel 8 and the second guide wheel 10 in sequence, the telescopic end of the first telescopic member 9 is fixedly connected with the follower wheel 8, and the relationship between the moving distance S of the follower wheel 8 and the height H of the seat plate 4 is S = 0.5H; the first telescopic member 9 is a pneumatic cylinder, and the first telescopic member 9 is fixedly arranged on the side plate 11; specifically, the guide wheels 10 are used for adjusting and changing the track direction of the cable 6, so that the cables 6 on the two sides of the follower wheel 8 can keep in parallel, and the telescopic end of the first pneumatic cylinder drives the follower wheel 8 to move, and then the track of the middle part of the cable 6 is adjusted, so as to adapt to the lifting action of the seat. The movement of the follower wheel 8 is used to adjust the track of the cable 6, the follower wheel 8 is a movable pulley, the movement distance of the end point of the cable 6 is twice the movement distance of the follower wheel 8, and the number of the follower wheels 8 can be adaptively adjusted according to actual conditions, for example, when two follower wheels 8 are used, the movement distance of the end point of the cable 6 is four times the movement distance of the follower wheel 8.

[0042] The lifting assembly comprises the scissors arm 12, the driving member 13 and the two groups of slide rails 14, one group of the slide rails 14 is fixedly arranged at the bottom of the support plate 3, and the other group of the slide rails 14 is fixedly arranged on the stroller body 1, the top and bottom of the scissors arm 12 are rotatably provided with the sliding blocks 15, the sliding blocks 15 at the top and the bottom are slidingly connected with the two groups of slide rails 14 respectively, the driving member 13 is fixedly arranged on the stroller body 1, and the output end of the driving member 13 is fixedly connected with the sliding block 15 at the bottom; the driving member 13 comprises two pneumatic cylinders, and the output ends of the two pneumatic cylinders are fixedly connected with the two sliding blocks 15 at the bottom of the scissors arm 12 respectively; specifically, the two sliding blocks 15 are driven to slide on the slide rails 14 by the two pneumatic cylinders respectively, so that the scissors arm 12 can realize the shearing action, and then the lifting of the support plate 3 at the top of the scissors arm 12 is realized, the lifting assembly and the scissors arm 12 are provided in two groups, and the up-down movement of the two support plates 3 is adjusted, so that the stress of the support plate 3 is more balanced.

[0043] The brake assembly comprises a rotating rod 16, a sleeve 17 and a bolt 18, the rotating rod 16 is rotationally arranged on the stroller body 1, the sleeve 17 is fixedly arranged on the bottom of the stroller body 1, the bolt 18 is slidingly arranged in the sleeve 17, one end of the bolt 18 is opposite to the rear wheel assembly 5, and the other end of the bolt 18 is fixedly arranged between the end of the sleeve 17 and the elastic reset member 19, one end of the rotating rod 16 is fixedly connected with the cable 6, and the other end of the rotating rod 16 is fixedly arranged with a pressing rod 20, and the side wall of the pressing rod 20 abuts against one end of the bolt 18 away from the rear wheel assembly 5. Specifically, when the position of the cable 6 connected with the rotating rod 16 moves upward, the rotating rod 16 rotates, the other end of the rotating rod 16 drives the pressing rod 20 to move towards the rear wheel assembly 5, and then the bolt 18 is inserted into the rear wheel assembly 5, so that the rear wheel cannot rotate, that is, the locking of the rear wheel is realized, and when the seat plate 4 is flipped and reset from the horizontal position, the elastic reset member 19 drives the bolt 18 to reset, and then drives the rotating rod 16 and the cable 6 to reset.

[0044] The inside of the storage basket 2 is fixedly provided with a plurality of unit cells 21, and the weighing unit comprises a plurality of pressure sensors 22 fixedly arranged at the bottom of the unit cells 21. Specifically, the storage basket 2 can be arranged in the form of a plurality of unit cells 21, and a pressure sensor 22 is arranged in each unit cell 21 to judge the weight change, so as to perceive which unit cell 21 the operator takes the goods from, and this form is more suitable for stacking different goods and arranging different files.

[0045] Further comprising two guide columns 23, the two guide columns 23 are fixedly arranged on the stroller body 1 in a symmetrical manner, a connecting rod 24 is fixedly arranged between the two support plates 3, and the two ends of the connecting rod 24 are slidingly connected with the guide columns 23. Specifically, when the height of the seat plate 4 is adjusted, the operator sits on the seat plate 4 or steps on the seat plate 4, and if the guide is only performed by the scissors arm 12, risks are easy to occur, therefore, the guide column 23 is arranged to limit the movement direction of the seat plate 4, so as to ensure the stability and safety of the upward and downward movement of the seat plate 4.

[0046] Two handles 25 are fixedly arranged on the two guide columns 23, a blocking rod 26 is fixedly arranged between the two handles 25, the blocking rod 26 is used for blocking and limiting when the seat plate 4 is flipped upward, and a locking assembly for fixing the seat plate 4 is further fixedly arranged on the handle 25. Specifically, when the seat plate 4 is not in the horizontal state during the operation of the operator, but is in the process of loading goods into the storage basket 2 of the trolley or pushing the trolley, the flipping plate should be in a stable state, at this time, the seat plate 4 is arranged on the blocking rod 26 and is locked through the locking assembly.

[0047] The locking assembly comprises a locking groove 27 fixedly provided on the inner side of the handle 25, a stopper 28 is slidingly inserted in the locking groove 27, a spring 29 is fixedly arranged between the stopper 28 and the inner bottom surface of the locking groove 27, and the outer end of the stopper 28 has a circular arc surface. Specifically, when the seat plate 4 is turned over to the position of the stop lever 26, the side wall of the seat plate 4 extrudes the circular arc surface to make the stopper 28 slide to the inside of the locking groove 27, so that the seat plate 4 can pass through the position of the stopper 28, and then the stopper 28 is ejected under the action of the spring 29, and the stopper 28 blocks the seat plate 4. Here, only one structure of the locking assembly is provided, and any technical solution that can limit the seat plate 4 can be applied herein.

[0048] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent lifting trolley seat height adjustment system, characterized by: A stroller is provided, wherein the seat height adjustment method of the stroller includes: S1. Determine the target working height range of the cargo; S2. Divide the target working height range into levels; S3. Divide the location where the goods are stacked on the cart into a corresponding number of stacking areas according to the number of divided levels; S4. Independently monitor the goods in each stacking area in real time; S5. Determine the height range corresponding to the goods taken away by the operator based on the real-time monitoring results; S6. Adjust the stroller seat to the corresponding height according to the corresponding height range; The cart comprises a cart body (1), a storage basket (2) is fixedly provided on the cart body (1), support plates (3) that can slide up and down are symmetrically provided on both sides of the storage basket (2), and seat plates (4) are rotatably provided at the rear ends of the two support plates (3), a lifting assembly is fixedly provided between the support plates (3) and the cart body (1), two rear wheel assemblies (5) are symmetrically fixedly provided at the rear end of the bottom of the cart body (1), a brake assembly is also fixedly provided on the cart body (1), an input end of the brake assembly is fixedly connected to one end of a cable (6), and the other end of the cable (6) is fixedly connected to the seat plate (4), and an adjustment assembly for adjusting the cable (6) to always be in a taut state is also fixedly provided on the cart body (1); It also includes a controller and a plurality of weighing units, wherein the weighing units monitor the weight of the goods in the storage basket (2), each weighing unit monitors the weight change of the goods in an area, and each weighing unit corresponds to a different height of the seat plate (4). When the goods are taken out of the storage basket (2), the controller determines the gear position of the goods weight according to the weight monitored by the weighing unit, and the controller lowers the seat plate (4) to the height corresponding to the gear position through the lifting assembly according to the gear position of the current goods weight in the storage basket (2); The adjustment assembly includes at least one follower wheel (8), the cable (6) passes around all the follower wheels (8), and the cables (6) located on both sides of each follower wheel (8) are parallel to each other. The controller adjusts the distance S that the follower wheel (8) moves in the direction of extension of the parallel section of the cable (6) in real time according to the height H of the seat plate (4) raised / lowered.

2. The intelligent lifting trolley seat height adjustment system according to claim 1, characterized in that: The adjustment assembly includes a follower wheel (8), a first telescopic member (9) and two guide wheels (10), side panels (11) are fixedly provided on both sides of the cart body (1), the follower wheel (8) is slidably provided on the side panels (11), the guide wheels (10) are fixedly provided on the side panels (11), the cable (6) passes through the first guide wheel (10), the follower wheel (8) and the second guide wheel (10) in sequence, the telescopic end of the first telescopic member (9) is fixedly connected to the follower wheel (8), and the relationship between the distance S moved by the follower wheel (8) and the height H of the seat plate (4) raised / lowered is S=0.5H; The first telescopic member (9) is a cylinder, and the first telescopic member (9) is fixedly arranged on the side plate (11).

3. The intelligent lifting trolley seat height adjustment system according to claim 1, characterized in that: The lifting assembly includes a scissor arm (12), a driving member (13) and two groups of slide rails (14), one group of the slide rails (14) is fixedly arranged at the bottom of the support plate (3), and the other group of the slide rails (14) is fixedly arranged on the trolley body (1). The top and bottom of the scissor arm (12) are both rotatably provided with sliders (15), and the sliders (15) at the top and bottom are respectively slidably connected to the two groups of slide rails (14). The driving member (13) is fixedly arranged on the trolley body (1), and the output end of the driving member (13) is fixedly connected to the slider (15) at the bottom.

4. The intelligent lifting trolley seat height adjustment system according to claim 3, characterized in that: The driving member (13) includes two cylinders, and the output ends of the two cylinders are respectively fixedly connected to the two sliders (15) at the bottom of the scissor arm (12).

5. The intelligent lifting trolley seat height adjustment system according to claim 1, characterized in that: The brake assembly includes a rotating rod (16), a sleeve (17), and a latch (18). The rotating rod (16) is rotatably arranged on the cart body (1), the sleeve (17) is fixedly arranged at the bottom of the cart body (1), and the latch (18) is slidably inserted into the sleeve (17). One end of the latch (18) faces the rear wheel assembly (5), and an elastic reset member (19) is fixedly arranged between the other end of the latch (18) and the end of the sleeve (17). One end of the rotating rod (16) is fixedly connected to the cable (6), and a pressure rod (20) is fixedly arranged at the other end of the rotating rod (16), and the side wall of the pressure rod (20) abuts against the end of the latch (18) away from the rear wheel assembly (5).

6. The intelligent lifting trolley seat height adjustment system according to claim 1, characterized in that: A plurality of cells (21) are fixedly arranged inside the storage basket (2), and the weighing unit includes a plurality of pressure sensors (22). The pressure sensors (22) are fixedly arranged at the bottom of the cells (21).

7. The intelligent lifting trolley seat height adjustment system according to claim 1, characterized in that: It also includes two guide columns (23), which are symmetrically fixed on the cart body (1). A connecting rod (24) is fixed between the two support plates (3), and both ends of the connecting rod (24) are slidably connected to the guide columns (23).

8. The intelligent lifting trolley seat height adjustment system according to claim 7, characterized in that: A handle (25) is fixedly provided on each of the two guide columns (23), and a blocking rod (26) is fixedly provided between the two handles (25). The blocking rod (26) is used to block and limit the seat plate (4) when it flips upward. A locking assembly for fixing the seat plate (4) is also fixedly provided on the handle (25).

9. The intelligent lifting trolley seat height adjustment system according to claim 8, characterized in that: The locking assembly includes a locking groove (27), the locking groove (27) is fixedly opened on the inner side of the handle (25), a stopper (28) is slidably inserted into the locking groove (27), a spring (29) is fixedly arranged between the stopper (28) and the inner bottom surface of the locking groove (27), and the outer end of the stopper (28) has an arc surface.

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