A pallet for a stacker

Abstract

The utility model relates to a kind of stacker loading platform, belong to stacker technical field, to solve the existing stacker loading platform, there is the large floor space of loading platform bottom component, leading to the large height of loading platform taking and placing goods, space utilization is low, operation stability is poor and the problem of low use safety. The present application includes loading platform frame, transmission unit and guide unit, and the loading platform frame includes bottom frame and column frame;Two sides of bottom frame are oppositely parallel and installed with column frame;Transmission unit is installed on the frame body of column frame where bottom frame is located, shaft element of transmission unit is all through the column frame of corresponding side and extends to the outside of bottom frame, to be engaged with the column rack of stacker;Guide unit is installed on column frame and corresponding position of column rack, and it includes several guide wheels, and several guide wheels are arranged along column rack. The present application drives loading platform to run using double servo motor, realizes the structure of simplifying transmission component, saves component installation space.

Description

Technical Field

[0001] This utility model relates to a stacker crane loading platform, belonging to the field of stacker crane technology. Background Technology

[0002] In the manufacturing process, stacker cranes and automated warehouses are needed for material handling and storage. The stacker crane's loading platform is the carrier that directly supports the material handling, while the stacker crane's columns serve as the track for the loading platform's movement. For handling heavy materials (e.g., over 5 tons), existing stacker cranes use a rack and pinion drive system to enable the loading platform to move along the columns.

[0003] The existing stacker crane loading platform's drive unit is installed at the bottom of the loading platform, using a single asynchronous AC motor 12 in conjunction with a drive shaft 13. Gears 14 are mounted on both sides of the drive shaft on the column side. Because the drive shaft, single asynchronous AC motor, reducer 15, and control components 16 are all installed at the bottom of the loading platform, the drive unit's structure is complex and its components occupy a large space. This results in a large loading and unloading height when the loading platform is handling goods at low positions due to space limitations of the bottom drive unit, affecting the space utilization of the automated warehouse. Furthermore, the existing loading platform uses a rack and pinion drive, which causes platform swaying and poor stability during column operation. Additionally, the use of a single drive motor poses a safety issue if the motor loses power, causing the loading platform to automatically descend. Therefore, a new type of stacker crane loading platform is needed to solve the problems of existing stacker crane loading platforms, which use a single drive motor to drive the transmission shaft to drive the shaft gears on both sides to run along the column rack. These problems include the large footprint of the bottom components of the loading platform, resulting in a large loading and unloading height, low space utilization, poor operational stability, and low safety. Utility Model Content

[0004] The purpose of this utility model is to provide a stacker crane loading platform to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stacker crane loading platform, comprising a loading platform frame, a transmission unit, and a guide unit. The loading platform frame includes a bottom frame and a column frame. Column frames are installed parallel to each other on both sides of the bottom frame. Transmission units are respectively installed on the frame of the bottom frame located at the column frames. The shaft elements of the transmission units all penetrate through the corresponding column frames and extend to the outside of the bottom frame for meshing with the column rack of the stacker crane. Guide units are installed on the column frames at positions corresponding to the column rack, and each guide unit includes several guide wheels arranged along the column rack.

[0006] Specifically, the bottom frame includes a square frame and an end bracket. The two ends of the square frame are connected to the transmission unit. The lower end of the end bracket is fixedly installed at the end of the square frame. A rotating shaft groove is opened on the side of the frame. The shaft element of the transmission unit is rotatably installed through the rotating shaft groove. Its end extends to the outside of the bottom frame. A shaft gear that meshes with a rack is sleeved on the outside of the shaft.

[0007] Specifically, the column frame includes two column units, a crossbeam, and column braces; the two column units are vertically fixed on both sides of the end of the bottom frame, and each column unit includes two columns; the two columns of the column unit are installed parallel to each other on both sides of the transmission unit, forming a cavity between them; the crossbeam is fixedly installed on the top of the two columns away from the bottom frame, and the outer sides of the two columns are fixedly connected to the bottom frame through column braces.

[0008] Specifically, the stacker crane loading platform also includes a control unit, which includes a control box and a controller; the controller is installed in the control box, and the control box is fixedly installed in the storage cavity of the column frame; the transmission unit and the controller are electrically connected.

[0009] Specifically, the transmission unit includes a mounting bracket, a motor, a rotating shaft, and a shaft connector. The mounting bracket is fixedly installed on a square frame, and its frame has a shaft mounting hole. The motor is fixedly installed on the mounting bracket, and its power output shaft passes through the shaft mounting hole and is connected to the rotating shaft through the shaft connector. The rotating shaft is rotatably installed in the rotating shaft groove, and its end extends to the outside of the bottom frame and is connected to the shaft gear.

[0010] Specifically, the motor is a servo motor.

[0011] Specifically, the guide wheels are divided into two guide groups; one of the guide groups is installed on the end bracket to form the shaft element guide group, and the other group is installed on the top of the column frame away from the bottom frame to form the top guide group.

[0012] Specifically, the shaft element guide assembly includes a first horizontal guide wheel and a first end face guide wheel; the first horizontal guide wheel includes two upper horizontal guide wheels and a lower horizontal guide wheel; the two upper horizontal guide wheels are symmetrically mounted on the end bracket with the rack as the axis; the lower horizontal guide wheel and the shaft gear are symmetrically mounted on the end bracket with the rack as the axis; the end bracket has guide holes at positions corresponding to the rack; the first end face guide wheel is mounted on the end bracket away from the shaft gear through a first adjusting member, and at least part of its wheel body passes through the guide hole and extends to the rack side; the first adjusting member adjusts the wheel body volume of the first end face guide wheel extending to the rack side.

[0013] Specifically, the top guide assembly includes a mounting base, a second horizontal guide wheel, and a second end face guide wheel. The mounting base is installed on the top of the column frame. The second horizontal guide wheel includes two sub-horizontal guide wheels, which are symmetrically installed on the mounting base with the rack as the axis. The mounting base has guide through holes at positions corresponding to the rack. The second end face guide wheel is installed on the mounting base away from the second horizontal guide wheel, and at least part of its wheel body passes through the guide through hole and extends to the rack side.

[0014] Specifically, the top guide assembly also includes an adjustment seat, which is fixedly installed on the top of the column frame. The mounting seat is installed on the adjustment seat via a second adjustment member, which adjusts the horizontal distance of the mounting seat relative to the rack and the interval distance relative to the rack.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. The stacker crane loading platform of this application uses dual servo motors installed at both ends of the loading platform to drive the loading platform to run along the column rack. Compared with the traditional loading platform drive device, the transmission shaft is eliminated, thereby simplifying the structure of the transmission components, saving component installation space, and reducing the storage and retrieval height and the layer height when the loading platform is picking up and placing goods at a low position.

[0016] 2. Based on the foregoing, the bottom frame of this application includes a square frame and end supports. The two ends of the square frame are connected to the bottom of the transmission unit, and the lower end of the end supports is fixedly installed at the end of the square frame. The column frame includes two column units, a crossbeam, and column braces. The two column units are vertically fixedly installed on both sides of the end of the bottom frame, and each column unit includes two columns. The two columns of the column unit are installed parallel to each other on both sides of the transmission unit, forming a cavity between them. This cavity allows the control box of the control unit of the loading platform to be placed. Compared with traditional loading platforms, this further reduces the number of components installed at the bottom of the loading platform, thereby further reducing the layer height and the height for low-position loading and unloading.

[0017] 3. Based on the foregoing, the transmission unit of this application is a dual servo motor, so that the loading platform will not automatically descend if one of the motors loses power, thereby improving operational safety.

[0018] 4. Based on the foregoing, the loading platform of this application is equipped with a guiding assembly consisting of several guide wheels, including two sets of guide groups; one set of the two guide groups is installed on the end bracket to form a shaft element guide group, and the other set is installed on the top of the column frame away from the bottom frame to form a top guide group. This enables the guide wheels to effectively limit the movement of the loading platform during column operation, ensuring stable operation of the loading platform.

[0019] 5. Building upon the foregoing, the shaft element guide assembly of this application employs a fixed-position first horizontal guide wheel and an adjustable-position first end-face guide wheel. The top guide assembly utilizes an integrally adjustable mounting base and adjustment base, allowing the guide assembly to be adjusted after the loading platform is installed on the column, resulting in a fast and precise assembly and adjustment process. Furthermore, the shaft element guide assembly of this application employs an integrated machining and assembly of the shaft gear and three guide wheels, thereby improving overall rigidity and stability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a stacker crane loading platform in the prior art; Figure 2 This is a schematic diagram of the stacker crane loading platform in this embodiment (1); Figure 3 This is a structural side view of the stacker crane loading platform in this embodiment; Figure 4 This is a schematic diagram of the stacker crane loading platform in this embodiment (2); Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 6 for Figure 2 Enlarged schematic diagram of the structure at point D; Figure 7 for Figure 4 Enlarged schematic diagram of the structure at point E in the middle.

[0021] In the diagram: 1. Cargo platform frame; 2. Transmission unit; 3. Guide unit; 4. Bottom frame; 5. Column frame; 7. Control box; 8. Shaft element guide assembly; 9. Top guide assembly; 10. Shaft gear; 11. First adjusting component; 20. Mounting bracket; 21. Servo motor; 22. Rotating shaft; 23. Coupling; 40. Square frame; 41. End bracket; 50. Column; 51. Crossbeam; 52. Column diagonal brace; 80. Upper horizontal guide wheel; 800. Lower horizontal guide wheel; 81. First end face guide wheel; 90. Mounting seat; 91. Sub-horizontal guide wheel; 92. Second end face guide wheel; 110. Adjusting bracket. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] Please see Figures 2-7This embodiment discloses a stacker crane loading platform, including a loading platform frame 1, a transmission unit 2, and a guide unit 3. The loading platform frame includes a bottom frame 4 and a column frame 5. Column frames 5 are installed parallel to each other on both sides of the bottom frame. Transmission units are installed on the frame of the bottom frame located at the column frames. The shaft elements of the transmission units all pass through the corresponding column frames and extend to the outside of the bottom frame for meshing with the column rack (not shown) of the stacker crane. Guide units are installed on the column frames at positions corresponding to the column rack, and each guide unit includes several guide wheels arranged along the column rack.

[0024] The bottom frame 4 of this embodiment includes a square frame 40 and an end bracket 41. The two ends of the square frame are connected to the transmission unit. The lower end of the end bracket is fixedly installed at the end of the square frame. The side frame has a shaft groove. The transmission unit of this embodiment includes a mounting frame 20, a servo motor 21, a rotating shaft 22 and a coupling 23. The mounting frame is fixedly installed on the square frame and has a shaft mounting hole on its frame. The servo motor is fixedly installed on the mounting frame and its power output shaft passes through the shaft mounting hole and is connected to the rotating shaft through the coupling. The rotating shaft is rotatably installed in the shaft groove and its end extends to the outside of the bottom frame and is connected to the shaft gear 10. The column frame 5 in this embodiment includes two column units, a crossbeam 51, and column bracing 52. The two column units are vertically fixed on both sides of the end of the bottom frame, and each column unit includes two columns 50. The two columns are installed parallel to each other on both sides of the end bracket, forming a cavity between them. The crossbeam is fixedly installed on the top of the two columns away from the bottom frame, and the outer sides of the two columns are fixedly connected to the bottom frame through column bracing.

[0025] Furthermore, the stacker crane loading platform in this embodiment also includes a control unit, which includes a control box 7 and a controller; the controller is installed in the control box, and the control box is fixedly installed in the storage cavity of the column frame; the servo motor and the controller are electrically connected.

[0026] To ensure the stability of the loading platform along the rack, the guide wheels in this embodiment are divided into two guide groups. One group is installed on the end bracket, forming the shaft element guide group 8, and the other group is installed on the top of the column frame away from the bottom frame, forming the top guide group 9. The shaft element guide group 8 includes a first horizontal guide wheel and a first end face guide wheel 81. The first horizontal guide wheel includes two upper horizontal guide wheels 80 and a lower horizontal guide wheel 800. The two upper horizontal guide wheels 80 are symmetrically installed on the end bracket about the rack axis. The lower horizontal guide wheel 800 and the shaft gear 10 are symmetrically installed on the end bracket about the rack axis. The end bracket 41 has guide holes at positions corresponding to the rack. The first end face guide wheel is installed on the end bracket away from the shaft gear side via a first adjusting member 11, and at least a portion of its wheel body passes through the guide hole and extends to the rack side. The first adjusting member adjusts the volume of the wheel body of the first end face guide wheel extending to the rack side. In this embodiment, the first adjusting component is preferably an adjusting bolt assembly, which includes an adjusting frame 110 and adjusting bolts A. The adjusting frame is fixedly installed on the end bracket near the guide hole side. The frame body is provided with a guide wheel mounting groove. The first end face guide wheel is installed in the mounting groove through the wheel body mounting shaft. The end of the shaft body away from the guide wheel side has an external thread structure, and a fixing nut is threaded to it for fixing the mounting shaft of the first end face guide wheel in the mounting groove. In order to adjust the position of the first end face guide wheel, two adjusting threaded holes are opened on the frame body at the corresponding position of the adjusting frame and the mounting groove for installing adjusting bolts A. At the same time, two adjusting threaded holes are also opened on the end bracket on the other side of the adjusting frame at the corresponding position of the mounting groove, also for installing adjusting bolts A. This allows the radial position of the mounting shaft in the mounting groove to be adjusted by adjusting the threads on both sides of the mounting shaft, thereby adjusting the wheel body volume of the first end face guide wheel extending to the rack side. The top guide assembly 9 in this embodiment includes a mounting base 90, a second horizontal guide wheel, and a second end-face guide wheel 92. The mounting base is installed on the top of the column frame. The second horizontal guide wheel includes two sub-horizontal guide wheels 91, which are symmetrically mounted on the mounting base with the rack as the axis. The mounting base has guide holes at positions corresponding to the rack. The second end-face guide wheel is mounted on the mounting base away from the second horizontal guide wheel, and at least part of its wheel body passes through the guide holes and extends to the rack side. The top guide assembly also includes an adjusting base 93, which is fixedly installed on the top of the column frame. The mounting base is mounted on the adjusting base via a second adjusting member, which adjusts the horizontal distance and the interval distance of the mounting base relative to the rack. In this embodiment, the second adjusting member is preferably an adjusting bolt B. The adjusting base has adjusting plates on corresponding sides of the adjusting base, according to the direction in which the mounting base slides left and right along the adjusting base and towards the rack. The adjusting plates have adjusting threaded holes for installing adjusting bolts. By adjusting the adjusting bolts on the adjusting plates on both sides of the adjusting base in the horizontal direction, the horizontal distance between the two sub-horizontal guide wheels on the mounting base and the rack is adjusted.The spacing between the second end face guide wheel and the rack is adjusted by adjusting the adjusting bolt on the adjusting plate facing the rack sliding side.

[0027] Working Principle: In this embodiment, during assembly, the stacker crane loading platform can be directly installed onto the slide rails of the stacker crane columns. Then, installers can directly install transmission units on both sides of the square frame of the loading platform. The power output shaft of the servo motor is connected to the rotating shaft on the end bracket via a coupling. A shaft gear is installed at the end of the rotating shaft to mesh with the rack on the column. The cavities in the column frames on both sides of the loading platform are used to install the control box, completing the component installation. Next, shaft element guide assemblies are installed on the end brackets on both sides of the loading platform. It should be noted that since the top guide assembly has not yet been installed, the first end face guide wheel of the shaft element guide assembly does not need to be adjusted temporarily. Synchronous adjustment will be performed after the top guide assembly is installed.

[0028] In this embodiment, when the stacker crane loading platform needs to be raised and lowered, the controller of the control unit activates the servo motors on both sides to drive the shaft gears and rack gears to mesh, thereby moving the loading platform up or down along the rack. This invention uses two servo motors to control the lifting and lowering of the loading platform. The controller achieves transmission by synchronizing the gears of the two servo motors. The installation method of the servo motors in this invention greatly reduces the space occupied by the loading platform at the bottom. The loading platform is not limited by the height of the goods in the project, ensuring its own structural strength and weight, and accommodating the height requirements of various projects. At the same time, it greatly reduces the distance of the loading platform from the ground, saving the distance of the first-layer crossbeam track of the rack connecting to the stacker crane frame.

[0029] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents of the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. A stacker crane loading platform, comprising a loading platform frame, a transmission unit, and a guiding unit, characterized in that: The loading platform frame includes a bottom frame and column frames; column frames are installed parallel to each other on both sides of the bottom frame; the transmission unit is installed on the frame of the bottom frame located at the column frames respectively, and the shaft elements of the transmission unit all pass through the corresponding column frames and extend to the outside of the bottom frame for meshing with the column rack of the stacker crane; a guide unit is installed on the column frame at a position corresponding to the column rack, which includes a plurality of guide wheels arranged along the column rack.

2. A stacker crane loading platform according to claim 1, characterized in that: The bottom frame includes a square frame and an end bracket. The two ends of the square frame are connected to the transmission unit. The lower end of the end bracket is fixedly installed at the end of the square frame. A rotating shaft groove is opened on the side of the frame. The shaft element of the transmission unit is rotatably installed through the rotating shaft groove. Its end extends to the outside of the bottom frame. A shaft gear that meshes with a rack is sleeved on the outside of the shaft.

3. A stacker crane loading platform according to claim 1, characterized in that: The column frame includes two column units, a crossbeam, and column braces; the two column units are vertically fixed on both sides of the end of the bottom frame, and each column unit includes two columns; the two columns of the column unit are installed parallel to each other on both sides of the transmission unit, forming a cavity between them; the crossbeam is fixedly installed on the top of the two columns away from the bottom frame, and the outer sides of the two columns are fixedly connected to the bottom frame through column braces.

4. A stacker crane loading platform according to claim 3, characterized in that: The stacker crane loading platform also includes a control unit, which includes a control box and a controller; the controller is installed in the control box, and the control box is fixedly installed in the storage cavity of the column frame; the transmission unit and the controller are electrically connected.

5. A stacker crane loading platform according to claim 2, characterized in that: The transmission unit includes a mounting bracket, a motor, a rotating shaft, and a shaft connector. The mounting bracket is fixedly installed on a square frame, and its frame has a shaft mounting hole. The motor is fixedly installed on the mounting bracket, and its power output shaft passes through the shaft mounting hole and is connected to the rotating shaft through the shaft connector. The rotating shaft is rotatably installed in a rotating shaft groove, and its end extends to the outside of the bottom frame and is connected to a shaft gear.

6. A stacker crane loading platform according to claim 5, characterized in that: The motor is a servo motor.

7. A stacker crane loading platform according to claim 2, characterized in that: Several guide wheels are divided into two guide groups; one of the two guide groups is installed on the end bracket to form the shaft element guide group, and the other group is installed on the top of the column frame away from the bottom frame to form the top guide group.

8. A stacker crane loading platform according to claim 7, characterized in that: The shaft element guide assembly includes a first horizontal guide wheel and a first end face guide wheel; the first horizontal guide wheel includes two upper horizontal guide wheels and a lower horizontal guide wheel; the two upper horizontal guide wheels are symmetrically mounted on the end bracket with the rack as the axis; the lower horizontal guide wheel and the shaft gear are symmetrically mounted on the end bracket with the rack as the axis; the end bracket has guide holes at positions corresponding to the rack; the first end face guide wheel is mounted on the end bracket away from the shaft gear through a first adjusting member, and at least part of its wheel body passes through the guide hole and extends to the rack side; the first adjusting member adjusts the wheel body volume of the first end face guide wheel extending to the rack side.

9. A stacker crane loading platform according to claim 7, characterized in that: The top guide assembly includes a mounting base, a second horizontal guide wheel, and a second end face guide wheel. The mounting base is installed on the top of the column frame. The second horizontal guide wheel includes two sub-horizontal guide wheels, which are symmetrically installed on the mounting base with a rack as the axis. The mounting base has guide through holes at positions corresponding to the rack. The second end face guide wheel is installed on the mounting base away from the second horizontal guide wheel, and at least part of its wheel body passes through the guide through hole and extends to the rack side.

10. A stacker crane loading platform according to claim 9, characterized in that: The top guide assembly also includes an adjustment seat, which is fixedly installed on the top of the column frame. The mounting seat is installed on the adjustment seat via a second adjustment member, which adjusts the horizontal distance of the mounting seat relative to the rack and the interval distance relative to the rack.

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