Stacking machine of gear and rack structure

Abstract

The utility model relates to the technical field of stackers, in particular to a stacker with gear and rack structures, which comprises a stand column, a cargo carrying table, a traveling mechanism and a lifting mechanism, the lifting mechanism drives the cargo carrying table to ascend and descend along the stand column, the lifting mechanism comprises a guide structure and a plurality of gear and rack lifting structures, and the gear and rack lifting structures are arranged on the guide structure. The multiple sets of gear and rack lifting structures are driven by correspondingly-arranged driving motors correspondingly. By arranging the multiple sets of gear and rack lifting mechanisms, overall stress can be balanced, and the gear and rack lifting mechanisms are good in transmission rigidity, more stable in operation and more accurate in positioning. A gear rack lifting structure is matched with a servo motor, the power of a single driving unit can be reduced, the structure is light, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of stackers, in particular to a stacker with a gear rack structure. Background Art

[0002] In warehouses, stackers are commonly used to transfer and store freight. Existing stackers typically use a winch as a lifting mechanism and rollers as a transmission component, resulting in a large gap when lifting the goods. When the goods sink a small distance at the moment of starting, in serious cases, the goods become unstable and may fall over and be damaged. At the same time, the winch is equipped with a brake mechanism to prevent problems such as wire rope breakage. As a result, the entire stacker structure is complex and occupies a large space. The complex structure also increases the risk of equipment damage, resulting in increased maintenance costs.

[0003] There are also stackers that use gears as the elevator drive mechanism. However, when placing goods on the cargo platform, the cargo platform may sink when it is raised because the goods are not placed in the center or the goods themselves are heavy. When the goods are raised, the gears will have uneven torque distribution due to the sinking of the goods, which seriously affects the stability and service life of the lifting mechanism. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a stacker with a rack and pinion structure. Through the cooperation of the first clamping wheel group and the second clamping wheel group, the force of the unbalanced weight of the goods is applied to the side of the column through the first clamping wheel group and the second clamping wheel group, thereby reducing the problem of unbalanced weight of the goods and ensuring that the torque between multiple lifting gears is balanced during operation, thereby ensuring the service life of the lifting mechanism and ensuring the stability of the lifting mechanism during operation.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A stacker with a rack and pinion structure includes a column, a cargo platform, a walking mechanism and a lifting mechanism. The lifting mechanism drives the cargo platform to rise and fall along the column. The lifting mechanism includes a guide structure and a rack and pinion lifting structure. Multiple groups of rack and pinion lifting structures are provided, and the multiple groups of rack and pinion lifting structures are respectively driven by correspondingly configured drive motors.

[0007] Preferably, there is one column, and two groups of the rack and pinion lifting structures are provided, and the two groups of the rack and pinion lifting structures are respectively provided on both sides of the column.

[0008] Preferably, there are two upright posts, and at least two groups of rack and pinion lifting structures are provided. The at least two groups of rack and pinion lifting structures are respectively provided on the sides of the two upright posts.

[0009] Preferably, at least two groups of the rack and pinion lifting structures are arranged on opposite sides of two groups of columns.

[0010] Preferably, four groups of the rack and pinion lifting structures are provided, and the four groups of the rack and pinion lifting structures are respectively provided on both sides of the two columns.

[0011] Preferably, the drive motors are all configured as servo motors.

[0012] Preferably, the rack and pinion lifting structure includes a lifting gear and a lifting rack, the lifting rack is mounted on a column, the lifting gear is mounted on an output shaft of a driving motor, and the driving motor is mounted on a cargo platform.

[0013] Preferably, the guide structure includes at least one set of clamping wheels, and the guide structure is arranged on the cargo platform, and at least one set of the clamping wheels clamps the column in the middle.

[0014] Preferably, a detection component is provided on the cargo platform, and the detection component is used to detect the levelness of the cargo platform and adjust it through multiple groups of the gear rack lifting structures. The detection component is configured as a level sensor or a distance measuring element set at multiple positions.

[0015] Preferably, it also includes a lubrication mechanism, which includes a lubrication gear and a lubricating oil pump. The lubrication gear is meshed with the lifting rack, and the lubrication gear has an oil inlet hole in the axial direction. The lubrication gear is provided with an oil outlet hole in the radial direction. The oil inlet hole is connected to the oil outlet hole, and the lubricating oil pump is connected to the oil inlet hole through a pipeline.

[0016] Preferably, the walking mechanism includes a ground rail walking structure and / or an overhead rail walking structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The utility model can balance the overall force by setting multiple sets of gear rack lifting structures, and the gear rack lifting mechanism has good transmission rigidity, more stable operation and more accurate positioning.

[0019] 2. The rack and pinion lifting structure of this device is combined with a servo motor to reduce the power of a single drive unit. It has a light structure and is easy to maintain.

[0020] 3. This device arranges racks on both sides of the column and arranges a lifting motor and lifting gear that are compatible with the racks on the vertical plate. It can evenly distribute the weight on the cargo platform to the four racks on the four sides of the two columns, evenly distribute the gravity of the goods, reduce the load of each lifting motor during operation, and reduce the additional power consumption or heat loss of each motor, thereby improving the energy efficiency of the system and ensuring the service life of the motor.

[0021] 4. This device works through a lubricating oil pump, which can transport the lubricating oil in the lubricating oil tank to the lubricating gear. Through the lubricating oil hole on the lubricating gear, the lubricating oil can be applied to the rack when the lubricating gear rotates on the rack. The lifting gear can also be covered with lubricating oil when it contacts the rack. This can not only reduce the noise when the elevator is working, but also prevent the rack and lifting gear from corrosion and oxidation due to external environmental factors, thereby increasing the service life of the lifting mechanism.

[0022] 5. The device can further improve the stability of the device during operation and prevent the cargo platform from tilting toward the column through the cooperation between the limiting wheel and the first clamping wheel group and the second clamping wheel group. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a right side view of the utility model;

[0025] Figure 3 is a top view of the device;

[0026] Figure 4 This is a bottom view of the device.

[0027] In the figure: 1. Ground rail guide wheel; 2. Ground rail travel wheel; 3. Travel motor; 4. Lubricating oil pump; 5. Lubricating oil tank; 6. First clamping wheel group; 7. Telescopic fork; 8. Second clamping wheel group; 9. Lifting motor; 10. Lubrication gear; 11. Lifting gear; 12. Cargo platform; 13. Column; 14. Rack; 15. Fork motor; 16. Vertical plate; 17. Moving seat; 18. Limiting wheel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] A stacker with a rack and pinion structure, the structure is as follows Figures 1-4As shown, the movable seat 17 is provided with columns 13 at both ends along the length direction, the tops between the two columns 13 are connected by a crossbeam, and a cargo platform 12 is provided between the two columns 13. Vertical plates 16 are provided on both sides of the cargo platform 12 close to the columns 13, and the sides of the vertical plates 16 are provided with a lifting mechanism and a guide clamping device that move along the length direction of the columns 13; the lifting mechanism includes a lifting motor 9 installed on the vertical plate 16, a lifting gear 11 is installed at the power output end of the lifting motor 9, and a rack 14 that is compatible with the lifting gear 11 is provided on the column 13; the guide clamping device includes a first clamping wheel group 6 arranged on the upper side of the vertical plate 16 and a second clamping wheel group 8 arranged on the lower side of the vertical plate 16, and the first clamping wheel group 6 and the second clamping wheel group 8 are both matched with the column 13.

[0031] When the goods placed on the cargo platform 12 need to be lifted up or lowered, the lifting motor 9 is started to drive the lifting gear 11 to rotate. Since the lifting mechanism is arranged on the vertical plates 16 on both sides of the cargo platform 12, and the rack 14 is arranged on the side of the column 13, the lifting gear 11 is engaged with the rack 14. When the lifting gear 11 rotates, it can drive the cargo platform 12 to move up and down along the column 13, so as to drive the goods on the cargo platform 12 to rise or fall;

[0032] In order to avoid uneven torque among multiple lifting gears 11 due to the overweight of the cargo, a first clamping wheel group 6 and a second clamping wheel group 8 are provided to cooperate with the column 13. The first clamping wheel group 6 and the second clamping wheel group 8 are in contact with the side of the column 13. When the lifting gear 11 drives the cargo platform 12 to move upward, the first clamping wheel group 6 and the second clamping wheel group 8 cooperate so that the force of the overweight of the cargo acts on the side of the column 13 through the first clamping wheel group 6 and the second clamping wheel group 8, reducing the problem of overweight of the cargo and ensuring that the torque among multiple lifting gears 11 is balanced during operation, thereby ensuring the service life of the lifting mechanism and ensuring the stability of the lifting mechanism during operation.

[0033] The first clamping wheel assembly 6 includes two first rotating rods, one on each side of the column 13, with the free ends of the first rotating rods provided with first guide wheels that abut against the side of the column 13. The second clamping wheel assembly 8 includes two second rotating rods, one on each side of the column 13, with the free ends of the second rotating rods provided with second guide wheels that abut against the side of the column 13. The lifting mechanism is provided between the first guide wheel and the second guide wheel on the same side of the vertical plate 16.

[0034] The two first guide wheels and the two second guide wheels are both arranged on both sides of the column 13 and are in contact with the column 13. The first guide wheel is arranged at the upper end of the side of the vertical plate 16, and the second guide wheel is arranged at the lower end of the side of the vertical plate 16. A lifting mechanism is provided in the middle of the side of the vertical plate 16. By arranging the first guide wheel and the second guide wheel above and below the lifting mechanism, the weight imbalance of the goods on the cargo platform 12 can be offset, ensuring that the torque between the lifting gears 11 on the lifting mechanism is balanced.

[0035] Compared with the problem of unbalanced weight when controlling the lifting of the cargo platform 12 by using the guide rail, the use of the first clamping wheel group 6 and the second clamping wheel group 8 is simpler in structure and reduces the cost of subsequent maintenance. This device is more convenient to clean than the use of the guide rail.

[0036] The rack 14 is arranged on the two side surfaces of the column 13 that abut against the two first driving wheels. A lifting motor 9 is provided on both sides of the width direction of the vertical plate 16. A lifting gear 11 is provided at the power output end of the lifting motor 9. The lifting gear 11 is engaged with the rack 14 on the corresponding side surface of the column 13.

[0037] By arranging racks 14 on both sides of the column 13 and arranging a lifting motor 9 and a lifting gear 11 that are compatible with the racks 14 on the vertical plate 16, the weight on the cargo platform 12 can be evenly distributed to the four racks 14 on the four sides of the two columns 13, evenly sharing the gravity of the goods, reducing the load of each lifting motor 9 during operation, and reducing the additional power consumption or heat loss of each motor, thereby improving the energy efficiency of the system and ensuring the service life of the motor.

[0038] Lubrication devices are provided on both sides of the cargo platform 12. These lubrication devices include a lubricating oil tank 5, which is mounted on the side of the cargo platform 12. A lubricating oil pump 4, which is connected to the lubricating oil tank 5, is also provided on the side of the cargo platform 12. Lubricating rotating rods are provided on both sides of the vertical plate 16 in the width direction. Lubricating gears 10 are mounted on the free ends of the lubricating rotating rods and mesh with racks 14. Both the lubricating rotating rods and the lubricating gears 10 have cavities within them, and the cavities of the lubricating gears 10 and the lubricating rotating rods are connected. The lubricating oil pump 4 is connected to the lubricating rotating rods via an oil pipe, and lubricating oil holes are provided on the tooth surfaces of the lubricating gears 10.

[0039] When the lifting motor 9 is working, the lubricating oil pump 4 works and can transport the lubricating oil in the lubricating oil tank 5 to the lubricating gear 10. Through the lubricating oil hole on the lubricating gear 10, the lubricating oil can be applied to the rack 14 when the lubricating gear 10 rotates on the rack 14. The lifting gear 11 can also be covered with lubricating oil when it contacts the rack 14. This not only reduces the noise when the hoist is working, but also prevents the rack 14 and the lifting gear 11 from corrosion and oxidation due to external environmental factors, thereby improving the service life of the lifting mechanism.

[0040] A telescopic fork 7 is provided on the cargo platform 12 , and a fork motor 15 for driving the telescopic fork 7 is provided on the side of the cargo platform 12 .

[0041] The telescopic fork 7 can be controlled to extend to the cargo platform 12 by the fork motor 15. When the cargo is placed on the telescopic fork 7, the fork motor 15 works again to drag the cargo to the cargo platform 12, thereby moving the cargo.

[0042] Limiting wheels 18 are respectively provided at the upper and lower ends of the vertical plate 16 close to the column 13 , and the limiting wheels 18 abut against two opposite side surfaces of the column 13 .

[0043] The cooperation between the limiting wheel 18 and the first clamping wheel group 6 and the second clamping wheel group 8 can further improve the stability of the device during operation and prevent the cargo platform 12 from tilting toward the column 13.

[0044] The two ends of the bottom of the moving base 17 are respectively provided with ground rail running wheels 2, and the side of the moving base 17 is provided with a running motor 3 that drives the ground rail running wheels 2. The two ends of the moving base 17 are respectively provided with a group of ground rail guide wheels 1.

[0045] By starting the walking motor 3, the ground rail walking wheel 2 can be driven to move on the ground rail, which is convenient for driving the device to move. The walking ground rail can enable the stacker to achieve efficient movement and operation in a limited space, which is suitable for a storage environment that requires a large amount of storage space. The ground rail guide wheels 1 arranged at both ends of the moving seat 17 can improve the stability of the moving seat 17 during movement, and prevent the goods on the loading platform 12 from falling due to shaking when the moving seat 17 is running quickly, thereby improving the safety of the device when in use.

[0046] The traveling mechanism includes a ground rail traveling structure and / or an overhead rail traveling structure. The ground rail traveling structure includes a ground rail guide wheel 1 and a ground rail traveling wheel 2, and also includes a traveling motor 3 that drives the ground rail traveling wheel 2. The overhead rail traveling structure includes an overhead rail guide wheel and an overhead rail traveling wheel, and also includes a traveling motor 3 that drives the overhead rail traveling wheel. The overhead rail traveling structure and / or the ground rail traveling structure facilitates lateral movement of the device.

[0047] Example 2

[0048] Compared with the first embodiment, this embodiment has one column 13 and two sets of gear rack 14 lifting structures, which are respectively arranged on both sides of the column 13. As can be easily imagined, as a single column 13, the guide structure is configured to be able to only be raised and lowered along the column 13. For example, the guide structure is configured to have clamping wheels on all four sides of the column 13 to prevent forward, backward, left, and right movement.

[0049] Example 3

[0050] Compared with Example 1, this embodiment has two groups of gear rack 14 lifting structures, which are respectively arranged on two columns 13, and the two groups of gear rack 14 lifting structures are arranged opposite to each other. Under the premise of balanced force and smooth operation, they are suitable for light load conditions.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes, additions, subtractions, or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A stacker with a rack and pinion structure, comprising a column (13), a cargo platform (12), a walking mechanism and a lifting mechanism, wherein the lifting mechanism drives the cargo platform (12) to rise and fall along the column (13), characterized in that: The lifting mechanism includes a guide structure and a gear rack (14) lifting structure. The gear rack (14) lifting structure is provided in multiple groups, and the multiple groups of gear rack (14) lifting structures are respectively driven by correspondingly configured drive motors.

2. The rack and pinion stacker according to claim 1, characterized in that: The column (13) is provided with one, and the gear rack (14) lifting structure is provided with two groups, and the two groups of gear rack (14) lifting structures are respectively provided on both sides of the column (13).

3. The rack and pinion stacker according to claim 1, characterized in that: There are two upright posts (13), and at least two groups of gear rack (14) lifting structures are provided. The at least two groups of gear rack (14) lifting structures are respectively provided on the sides of the two upright posts (13).

4. The rack and pinion stacker according to claim 3, characterized in that: At least two groups of the gear rack (14) lifting structures are arranged on opposite sides of the two groups of columns (13).

5. The rack and pinion stacker according to claim 3, characterized in that: Four groups of the gear rack (14) lifting structures are provided, and the four groups of the gear rack (14) lifting structures are respectively provided on both sides of the two columns (13).

6. A rack and pinion stacker according to any one of claims 1 to 5, characterized in that: The driving motors are all configured as servo motors.

7. The rack and pinion stacker according to claim 1, characterized in that: The gear rack (14) lifting structure includes a lifting gear (11) and a lifting rack (14), wherein the lifting rack (14) is mounted on a column (13), and the lifting gear (11) is mounted on an output shaft of a driving motor, and the driving motor is mounted on a cargo platform (12).

8. The rack and pinion stacker according to claim 1, characterized in that: The guide structure comprises at least one set of clamping wheels, and the guide structure is arranged on the cargo platform (12). The at least one set of clamping wheels clamps the column (13) in the middle.

9. The rack and pinion stacker according to claim 6, characterized in that: The cargo platform (12) is provided with a detection component, which is used to detect the horizontality of the cargo platform (12) and adjust it through multiple sets of gear rack lifting structures. The detection component is configured as a horizontal sensor or a distance measuring element set at multiple positions.

10. The rack and pinion stacker according to claim 7, characterized in that: The invention also includes a lubrication mechanism, wherein the lubrication structure includes a lubrication gear (10) and a lubrication oil pump (4), wherein the lubrication gear (10) is meshed with the lifting rack (14), and the lubrication gear (10) has an oil inlet hole in the axial direction, and an oil outlet hole is provided in the radial direction of the lubrication gear (10), wherein the oil inlet hole is connected to the oil outlet hole, and the lubrication oil pump (4) is connected to the oil inlet hole through a pipeline.

11. The rack and pinion stacker according to claim 1, characterized in that: The walking mechanism includes a ground rail walking structure and / or an overhead rail walking structure.

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