Lifting device capable of changing taking height of component material box

Abstract

A lifting device capable of changing the taking height of a component material box is used for transporting installation materials on an automobile production line, relates to the technical field of design and manufacturing of material transporting box storage devices on the automobile production line and comprises a feeding unit, a discharging unit and a returning device. The feeding unit and the discharging unit are arranged in a frame structure composed of a top frame and a bottom frame, and the returning device is arranged on one side of the frame structure. The feeding unit comprises a feeding linkage table, a handrail, a pulley assembly and a pull wire assembly, the discharging unit comprises a discharging box linkage table, a discharging box platform lifting pulley, a balancing weight, a pull wire assembly and a pulley assembly, and the discharging box linkage table is arranged on a vertical stand column of the frame structure in a sliding and sleeving mode through the discharging box platform lifting pulley; the weight of the empty component box and the weight of the full component box are balanced by means of descending of the empty component box and automatic ascending of the full component box, the component box on the bottom layer is automatically lifted to the height where a human body fetches components comfortably through the linkage platform lifting device, and manual operation is facilitated.

Description

Technical Field

[0001] A lifting device capable of changing the picking height of component material boxes, used for the transportation of materials installed on an automobile production line, and relates to the design and manufacturing technical field of storage devices for material transportation boxes on an automobile production line. Background Art

[0002] On an automobile production line, the lifting, different placement postures of automobile installation component items, sub-assembly, horizontal translation and flipping operations of objects are daily matters on the production line and are involved every day. To complete these tasks, the prior art usually needs to use different mechanical devices for operation. The result of doing this will not only increase the equipment purchase cost, but some operation processes are also very complex. Especially for some tasks without mechanical equipment operation, such as the material boxes stored for materials, they are often transported to the edge of the operation table by handling machinery for storage, and then after an operator uses up one box, another box is moved to the front of the operation table to pick up components for installation. The result of this is low efficiency, and continuous handling will also cause problems such as lumbar injuries to workers; there are also some components with large volumes, which not only occupy space during storage, but also have the problem of inconvenient picking.

[0003] An invention patent application with the patent application number 202410919905.2 involves a multi-functional mechanical lifting and flipping platform tooling, device and method. The device includes a main frame, a lifting mechanism, an inclined sub-assembly workbench, a horizontal translation component, a flip-over transfer tray, a counterweight balance mechanism and a docking frame. Above the lifting mechanism, there are an inclined sub-assembly workbench and a flip-over transfer tray; the inclined sub-assembly workbench is used for sub-assembly operations; the horizontal translation component can transfer the component box between the inclined sub-assembly workbench and the flip-over transfer tray; there are universal balls above the flip-over transfer tray, which can deliver the component box into the gravity conveyor track of the docking frame; the counterweight balance mechanism is connected to the lifting mechanism through a chain, which can balance the self-weight of the lifting mechanism, and the docking frame is used to store the sub-assembled component boxes; this patented technology integrates multiple functions such as lifting, inclined sub-assembly, horizontal translation, flipping and docking to achieve automatic sub-assembly operations, and cannot achieve the installation and transportation of component items at a single station and automatic loading and unloading of boxes.

[0004] Object of the Invention: The object of the present invention is to automatically lift the bottom component box to a comfortable height for human picking through linkage lifting, and to achieve the automatic lifting of empty boxes and full boxes through a balance mechanism and counterweights. Summary of the Invention The present invention relates to a lifting device capable of changing the picking height of component material boxes, including a feeding unit, a discharging unit, and a return device 7. The feeding unit and the discharging unit are arranged within a frame structure composed of a top frame 1 and a bottom frame 21 and having upright rods, and the return device 7 is arranged on one side of the frame structure; The feeding unit is provided with a pulley assembly and a wire pulling assembly, including a feeding linkage table 13, a blocking rod 2, a first pulley 3, a second pulley 4, a blocking rod wire 5, and a feeding platform lifting pulley 6; Both ends of the blocking rod 2 are slidably sleeved on the vertical columns of the frame through lifting sliding sleeves, and a blocking rod hanging buckle 20 is arranged on the top surface of the blocking rod 2; The blocking rod wire 5 is fixedly connected within the blocking rod hanging buckle 20. The blocking rod wire 5 first passes through the first pulley 3 and the second pulley 4, and then is connected to one side of a foot pedal 10 arranged on a return device 7; The feeding linkage table 13 is arranged at one end where the operator works. The feeding linkage table 13 is slidably sleeved on the vertical columns of the frame structure by the feeding platform lifting pulley 6; Preferably: The feeding linkage table (13) and the discharging box linkage table (16) are in a rectangular shape with a hollow space in the middle; A wire hanging buckle is arranged at the lower end of the feeding linkage table 13. The wire hanging buckle passes through a fourth pulley 12, then through a third pulley 11, upward through a steering pulley 8, and then the tail end is fixed to one side of the foot pedal 10; Preferably: The foot pedal 10 is slidably arranged on the vertical columns of the return device 7 through a lifting pulley; Preferably: A feeding box roller belt 18 is arranged on one side of the bottom frame 21 of the frame structure for the feeding unit. The feeding box roller belt 18 is inclined, with the height of the feeding port end higher than that of the other end. The lower end with a lower height of the feeding box roller belt 18 is flush with the installation height of the feeding linkage table 13; The discharging unit is also provided with a pulley assembly and a wire pulling assembly, including a discharging box linkage table 16, a discharging box platform lifting pulley 17, a counterweight 15, a discharging linkage table wire 19, a discharging box roller belt 22, a fifth pulley group 24, and a lifting linkage table wire anchor point 25; The discharging unit includes a wire pulling assembly and a pulley group. A counterweight 15 is arranged on the bottom surface of the discharging box linkage table 16. The discharging box linkage table 16 is slidably sleeved on the vertical columns of the frame structure by the discharging box platform lifting pulley 17; A discharging linkage table wire 19 connected to the bottom surface of the feeding box linkage table 13 is arranged on the bottom surface of the discharging linkage table 16. One end of the discharging linkage table wire 19 passes through the fifth pulley group 24 and is fixedly connected to the bottom surface of the feeding box linkage table 13, and the other end passes through two pulleys arranged at both ends of the bottom surface of the discharging box linkage table 16 and is anchored at the lifting linkage table wire anchor point 25; Preferably, a discharge box roller belt 22 is provided on one side of the discharge unit of the bottom frame 21 of the frame structure. The discharge box roller belt 22 is inclined, with the height of one end of the discharge port lower than that of the other end. The end with a higher height of the discharge box roller belt 22 is flush with the set height of the discharge linkage platform 16. The return device 7 includes a steering pulley 8, a linkage platform cable 9, a foot pedal 10, and a third pulley 11. The foot pedal 10 is slidably sleeved on the columns on both sides of the return device 7 by a lifting sliding sleeve. A steering pulley 8 is provided on the bottom surface of the upper end face of the return device 7. One end of the linkage platform cable 9 hanging in the steering pulley 8 is fixed downward on one side of the foot pedal 10, and the other end passes downward through the third pulley 11 and then upward through the fourth pulley 12 and is fixedly connected to the lower part of the loading linkage platform 13. Advantageous technical effects of the present invention 1. The material transfer box provided in the present technology can be directly placed on the inclined loading box roller belt set by a forklift. Since the loading box roller belt is inclined inward, when the blocking rod is opened, the transfer box containing the installation materials placed on the inclined loading box roller belt will slide orderly and automatically onto the loading box linkage platform 13. 2. When a box of installation materials is used up, the operator only needs to gently pull the empty material box to the discharge box linkage platform until three empty boxes are moved. Under the action of the counterweight block set on the ground of the discharge box linkage platform and the gravity of the empty material box, the stacked empty material boxes will roll on the rollers onto the outwardly inclined discharge box roller belt. Since the discharge box roller belt is inclined downward outward, the empty material box will automatically slide to the edge of the frame structure and be taken away by a transport vehicle.

[0006] 3. Due to the use effects of the above-mentioned points 1 and 2, the design of the present invention solves the problem that installation workers had to move the material boxes stacked on the installation line one by one to the operation line for installation operations before. It not only eliminates the need for deep bending operations when handling material boxes, which is harmful to the human waist, but also improves production efficiency and saves labor costs because the material boxes automatically slide to the operator's side. Brief description of the drawings

[0007] Figure 1 Schematic structural diagram of the present invention in the front view state when there is no material box at the outlet end; Figure 2 Top view structural diagram of the present invention without the upper frame; Figure 3 Schematic three-dimensional structural diagram of the present invention when there is no material box at both the inlet and outlet ends; Figure 4 Schematic structural diagram of the present invention in the use state.

[0008] Embodiment To clearly show the structural layout of the present invention, the following gives the best embodiment of the present invention in conjunction with the attached drawings. For the convenience of description, in this specification, three groups of feeding are taken as an example, with three material boxes up and down in each group for illustration.

[0009] In the figure: Top frame - 1, blocking rail - 2, first pulley - 3, second pulley - 4, blocking rod cable - 5, feeding platform lifting pulley - 6, return device - 7, steering pulley - 8, linkage platform cable - 9, foot pedal - 10, third pulley - 11, fourth pulley - 12, feeding linkage platform - 13, material box - 14, counterweight - 15, discharging box linkage platform - 16, discharging box platform lifting pulley - 17, feeding box roller belt - 18, discharging linkage platform cable - 19, blocking rod hanging buckle - 20, bottom frame - 21, discharging box roller belt - 22, lifting cable - 23, fifth pulley group - 24, lifting linkage platform cable anchor point - 25. Specific Embodiment Embodiment 1: Structure Composition and Effect of the Present Invention The present invention relates to a lifting device capable of changing the taking height of component material boxes, including a feeding unit, a discharging unit, and a return device 7. The discharging unit and the feeding unit are respectively provided with pulley assemblies and cable assemblies. The feeding unit and the discharging unit are arranged within a frame structure composed of a top frame 1 and a bottom frame 21 and having vertical columns. The return device 7 is arranged on one side of the frame structure; the feeding unit includes a feeding linkage platform 13, a blocking rail 2, a first pulley 3, a second pulley 4, a blocking rod cable 5, and a feeding platform lifting pulley 6; the blocking rail 2 is slidably sleeved on the vertical columns of the frame by lifting sliding sleeves at both ends, and a blocking rod hanging buckle 20 is arranged on the top surface of the blocking rail 2; the feeding linkage platform 13 arranged in the feeding unit and the discharging linkage platform 16 of the discharging unit are connected by a linkage cable, which can very conveniently realize the up and down lifting of the two components. Moreover, a counterweight is arranged at the bottom of the discharging linkage platform 16, which can reduce the manual effort required for lifting operation. Coupled with the self-weight of the material box, the mutual up and down movement of the two linkage platforms can be easily completed.

[0011] A blocking rod cable 5 is fixedly connected within the blocking rod hanging buckle 20. The blocking rod cable 5 first passes through the first pulley 3 and the second pulley 4, and then is connected to one side of a foot pedal 10 arranged on the return device 7; the feeding linkage platform 13 is arranged at one end where the operator works, and the feeding linkage platform 13 is slidably sleeved on the vertical columns of the frame structure by a feeding platform lifting pulley 6; The provided pulley and cable can drive the opening of the blocking rod while the operator steps on the foot pedal, and at the same time pull down the feeding linkage table 13, facilitating the direct entry of the second group of material boxes from the conveyor belt in the queuing state onto the feeding linkage table 13. The operator, from top to bottom, first opens the first material box 14 on the top, and according to the placement order of the components, takes out all the components inside until they are all taken and installed. Then, the empty material box is pulled to the left and placed on the discharging box linkage table on the left. When all the components in a group of three overlapping material boxes are installed, the empty material boxes are all stacked on the discharging box linkage table on the left. At this time, the empty material boxes can be pushed outwards, and the empty material boxes will be pushed out and finally collected and taken away by the station for collecting empty material boxes.

[0012] The feeding linkage table 13 is in the shape of a rectangle with a hollow structure in the middle. A cable hanging hook is provided at the lower end of the feeding linkage table 13. The cable hanging hook passes through the fourth pulley 12, then through the third pulley 11, upwards through the steering pulley 8, and then the tail end is fixed to one side of the foot pedal 10. The foot pedal 10 is slidably arranged on the vertical column of the return device 7 through a lifting pulley. Such a setting facilitates pulling down the feeding linkage table 13 from the upper end while pulling the blocking rod to place a new group of material boxes, facilitating the storage of the incoming material boxes.

[0013] On one side of the feeding unit of the bottom frame 21 of the frame structure, a feeding box roller belt 18 is provided. The feeding box roller belt 18 is inclined, with the height of the feeding port end higher than that of the other end. The lower end of the feeding box roller belt 18 with a lower height is flush with the setting height of the feeding linkage table 13. On one side of the discharging unit of the bottom frame 21 of the frame structure, a discharging box roller belt 22 is provided. The discharging box roller belt 22 is inclined, with the height of the discharging port end lower than that of the other end. The higher end of the discharging box roller belt 22 is flush with the setting height of the discharging linkage table 16. For the above two settings, one is that the height of the entry end of the feeding box roller belt 18 is greater than that of the other end, so that the three groups of material boxes placed on the feeding box roller belt 18 can automatically move forward under the action of the gravity of the materials in the material boxes. When the feeding linkage table 13 is pulled down, the material boxes will automatically enter the feeding linkage table 13. The other is that the height of the discharging end of the discharging box roller belt 22 is less than that of the other end. Such a setting is beneficial for when three material boxes in a group are all stacked on the discharging linkage table 16, under the action of the gravity of the empty material boxes and counterweights, they automatically slide out from the discharging linkage table 16, and automatically slide from the higher end of the discharging box roller belt 22 to the lower end of the discharging end of the discharging box roller belt 22 with a lower height, and wait to be collected and taken away.

[0014] The discharging unit includes a discharging box linkage platform 16, a lifting trolley for the discharging box platform 17, a counterweight 15, a pulling wire for the discharging linkage platform 19, a roller belt for the discharging box 22, a fifth pulley block 24, and an anchor point 25 for the lifting linkage platform pulling wire; a counterweight 15 is arranged on the bottom surface of the discharging box linkage platform 16, and the discharging box linkage platform 16 is slidably sleeved on the vertical column of the frame structure by the lifting trolley for the discharging box platform 17; a pulling wire 19 for the discharging linkage platform connected to the bottom surface of the feeding box linkage platform 13 is arranged on the bottom surface of the discharging linkage platform 16. One end of the pulling wire 19 for the discharging linkage platform passes through the fifth pulley block 24 and is fixedly connected to the bottom surface of the feeding box linkage platform 13, and the other end is anchored at the anchor point 25 for the lifting linkage platform pulling wire after passing through two pulleys arranged at both ends of the bottom surface of the discharging box linkage platform 16; the returning device 7 includes a steering pulley 8, a pulling wire 9 for the linkage platform, a foot pedal 10, and a third pulley 11; the foot pedal 10 is slidably sleeved on the columns on both sides of the returning device 7 by a lifting sliding sleeve. A steering pulley 8 is arranged on the bottom surface of the upper end surface of the returning device 7. One end of the pulling wire 9 for the linkage platform hanging in the steering pulley 8 is fixedly connected downward to one side of the foot pedal 10, and the other end passes through the third pulley 11 downward and then passes through the fourth pulley 12 and is fixedly connected upward to the lower surface of the feeding linkage platform 13. Embodiment 2: Working state of the pulling wire of the present invention and sliding of the material box Under the pulling of the pulling wire 19 for the discharging linkage platform, the discharging box linkage platform 16 moves downward under the action of the gravity of the counterweight 15 and the transferred material box 14. When the discharging box linkage platform 16 moves downward, under the pulling of the pulling wire 19 for the discharging linkage platform, since the feeding linkage platform 13 has no counterweight and no weight of the material box, it will be pulled upward; when the discharging box linkage platform 16 moves downward to the level height of the set roller belt 22 for the discharging box, since the surface of the discharging box linkage platform 16 in contact with the roller belt 22 for the discharging box is level, the empty material box on the discharging box linkage platform 16 will leave the discharging box linkage platform 16 and roll onto the roller 22 for the discharging box under the action of gravity and rollers, and continue to move outward along the set roller belt 22 for the discharging box with an inclined surface until it is blocked by the cross bar arranged at the end of the bottom frame 21.

[0015] Principle of the invention: Embodiment 3: Moving principle of the present invention The present invention utilizes the material box 14 to descend when empty and to ascend automatically when full, so that the weight of the empty and full material boxes 14 is balanced, and designs a device that can automatically ascend and descend the material inlet and outlet platform; the material box automatically ascends and descends the bottom material box to a comfortable height for human body to take materials through the linkage platform lifting device, and realizes the automatic ascending and descending of empty and full boxes through the balancing mechanism and counterweight method; the material box at the feeding end, taking 3 groups of stacked 3 layers in each group as an example, adds a blocking device to separate the full boxes of each group of three layers in front and behind, which can eliminate the squeezing of the full material box and cause the linkage platform to be unable to ascend and descend. The movable and fixed pulleys are combined to realize the simultaneous ascending and descending of the linkage platform. The operator steps on the pedal to lower the loading end and raise the emptying end. While stepping on the pedal, the blocking mechanism is triggered to move upward to put in a group of material boxes filled with materials. When a group of overlapping three material boxes at the front enters the material box platform 13 at the loading end, the blocking mechanism moves downward to separate the other two groups of full material boxes at the back from the group of overlapping three material boxes entering the material box platform 13 at the loading end. In this way, the full material boxes at the back can be prevented from squeezing the material box platform 13 at the loading end, so that the full material boxes entering the material box platform 13 at the loading end can slide down to the linkage platform 13 at the loading end under the action of their own gravity for standby use. Further: the loading box roller belt 18 involved in the specification is arranged on the right side of the bottom frame 21 in the frame structure composed of a top frame 1 and a bottom frame 21 and having vertical poles as described in the specification and faced by the operator. The loading box roller belt 18 is a belt structure with rollers or balls well known to those skilled in the art, and its belt structure is stationary, and the balls or rollers are arranged in the belt structure. The discharge box roller belt 22 is arranged on the left side of the bottom frame 21 in the frame structure composed of a top frame 1 and a bottom frame 21 and having vertical poles as described in the specification and faced by the aforementioned operator. The structure of the discharge box roller belt 22 is the same as that of the aforementioned loading box roller belt 18, and is also well known to ordinary technicians in the field of this technology. Therefore, the specific structures of the loading box roller belt 18 and the discharge box roller belt 22 are not repeated here. In addition, the loading box roller belt 18 and the discharging box roller belt 22 can also be installed by changing the left and right positions according to the setting of the automobile parts installation line and the needs of the operator to take and install the position. This position change does not involve structural changes. Therefore, ordinary technicians in this field can change the left and right installation positions according to actual needs, which is not described in detail here.

[0016] Furthermore, the bottom of the material box 14 is a plane, and the original material box may be placed in a tray. The structure and material of the material box or tray are well known to ordinary technicians in this technical field and will not be described in detail here.

[0017] Furthermore, the loading linkage table 13 and the unloading box linkage table 16 have the same structural form, which is a frame structure. Rollers are arranged on the surface of the frame structure to facilitate the pulling of the material box thereon. The settings of all structures are well-known to those of ordinary skill in the art and will not be described in detail herein.

Claims

1. A lifting device capable of changing the picking height of a component material box, comprising a feeding unit, a discharging unit, and a returning device, characterized in that: The feeding unit and the discharging unit are arranged within a frame structure composed of a top frame (1) and a bottom frame (21) and having vertical columns, and the returning device (7) is arranged on one side of the frame structure; The feeding unit is provided with a pulley assembly and a wire rope assembly, including a feeding linkage table (13), a blocking rod (2), a first pulley (3), a second pulley (4), a blocking rod wire rope (5), and a feeding platform lifting pulley (6); The blocking rod (2) is slidably sleeved on the vertical columns of the frame by lifting sliding sleeves arranged at both ends, and a blocking rod hanging buckle (20) is arranged on the top surface of the blocking rod (2); The blocking rod wire rope (5) is fixedly connected within the blocking rod hanging buckle (20), and the feeding linkage table (13) is slidably sleeved on the vertical columns of the frame structure by the feeding platform lifting pulley (6); The discharging unit is also provided with a pulley assembly and a wire rope assembly, including a discharging box linkage table (16), a discharging box platform lifting pulley (17), a counterweight (15), a discharging linkage table wire rope (19), a discharging box roller belt (22), a fifth pulley group (24), and a lifting linkage table wire rope anchor point (25); The discharging box linkage table (16) is slidably sleeved on the vertical columns of the frame structure by the discharging box platform lifting pulley (17); The returning device (7) includes a steering pulley (8), a linkage platform wire rope (9), a foot pedal (10), and a third pulley (11); the foot pedal (10) is slidably sleeved on the vertical columns on both sides of the returning device (7) by a lifting sliding sleeve.

2. The lifting device capable of changing the picking height of the component material box according to claim 1, characterized in that: The blocking rod wire rope (5) first passes through the first pulley (3) and the second pulley (4), and then is connected to one side of the foot pedal (10) arranged on the returning device (7).

3. The lifting device for changing the picking height of the component material box according to claim 1, characterized in that: A wire rope hanging buckle is arranged at the lower end of the feeding linkage table (13), the wire rope hanging buckle passes through the fourth pulley (12), then passes through the third pulley (11), goes up and passes through the steering pulley (8), and then the tail end is fixed to one side of the foot pedal (10).

4. The lifting device for changing the picking height of the component material box according to claim 1, characterized in that: The feeding linkage table (13) and the discharging box linkage table (16) are composed of a rectangular structure with a space in the middle.

5. The lifting device for changing the picking height of the component material box according to claim 1, characterized in that: The foot pedal (10) is slidably arranged on the vertical columns of the returning device (7) through a lifting pulley.

6. The lifting device for changing the picking height of the component material box according to claim 1, characterized in that: A feeding box roller belt (18) is arranged on one side of the feeding unit of the bottom frame (21) of the frame structure.

7. The lifting device for changing the picking height of the component material box according to claim 6, characterized in that: The feeding box roller belt (18) is inclined, the height of the feeding port end is higher than that of the other end, and the lower end of the feeding box roller belt (18) with a lower height is flush with the set height of the feeding linkage table (13).

8. The lifting device for changing the picking height of the component material box according to claim 1, wherein: A discharging box roller belt (22) is arranged on one side of the discharging unit of the bottom frame (21) of the frame structure, the discharging box roller belt (22) is inclined, the height of the discharging port end is lower than that of the other end, and the higher end of the discharging box roller belt (22) is flush with the set height of the discharging linkage table (16).

9. The lifting device for changing the picking height of the component material box according to claim 1, wherein: A counterweight (15) is provided on the bottom surface of the discharging box linkage table (16). A discharging linkage table wire (19) connected to the bottom surface of the feeding box linkage table (13) is provided on the bottom surface of the discharging linkage table (16). One end of the discharging linkage table wire (19) passes through the fifth pulley set (24) and is fixedly connected to the bottom surface of the feeding box linkage table (13), and the other end is anchored at the lifting linkage table wire anchor point (25) after passing through two pulleys provided at both ends of the bottom surface of the discharging box linkage table (16).

10. The lifting device for changing the picking height of the component material box according to claim 1, wherein: A steering pulley (8) is provided on the bottom surface of the upper end surface of the return device (7). One end of the linkage platform wire (9) hung in the steering pulley (8) is fixedly connected downward to one side of the foot pedal (10), and the other end passes downward through the third pulley (11), then passes through the fourth pulley (12) and is fixedly connected upward to the lower part of the feeding linkage table (13).

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