Centering mechanism of heavy-load tray conveying line

Abstract

The utility model belongs to the technical field of conveying tray centering, and particularly relates to a heavy-load tray conveying line centering mechanism. A lifting frame in the mechanism is located above a supporting frame and below a conveying line, the supporting frame is fixedly connected to the bottom of the conveying line, a plurality of motors are installed at the top of the lifting frame, a plurality of screw sleeves in one-to-one correspondence with the motors are installed at the top of the supporting frame, screw rods are in threaded connection with the interiors of the screw sleeves, and output shafts of the motors are coaxially connected with the upper ends of the screw rods. Suspension air cylinders are installed at the top of the motor, jacking blocks are fixedly connected to the left end and the right end of the top of the lifting frame, the jacking blocks are located between every two adjacent rollers in the conveying line, four positioning air cylinders are arranged above the lifting frame, and the ends of piston rods of the positioning air cylinders point to the center of a rectangle where the four suspension air cylinders are located. The mechanism solves the problems that when the tray is centered, the rolling surface of the roller is easy to damage due to friction between the tray and the roller, and the transportation of heavy goods cannot be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveyor tray centering, and particularly relates to a centering mechanism for a heavy-duty tray conveyor line. Background Art

[0002] At present, when a conveyor line conveys heavy goods, the goods are usually placed on a tray, and the tray is placed on the conveyor line. The conveyor line conveys the tray, so as to convey the goods to a designated position. Due to the placement angle of the tray or the collision of the tray during movement, the tray may not be parallel to the conveying direction on the conveyor line, or the tray may deviate from the conveying direction of the conveyor line. At this time, it is necessary to center the tray so that the tray is located in the middle of the conveyor line and is parallel to the conveying direction of the conveyor line, thereby improving the safety and stability of conveying goods on the conveyor line by the tray.

[0003] Most of the mechanisms that can realize the tray centering function currently used in the market are a pair of side pushing mechanisms of equal length driven by air cylinders. However, the weight of the goods that can be conveyed by this kind of mechanism is low, and the roller surface of the conveyor line (roller conveyor) will be damaged due to the friction of the tray during long-term high-intensity use. Because when the air cylinder pushes the tray to center, due to the weight of the goods, the bottom of the tray will rub against the roller surface. The greater the weight of the goods, the greater the friction force, and the greater the damage to the roller surface. Therefore, in order to ensure the normal operation of the conveyor line, the weight of the goods carried by the tray is low and cannot meet the transportation of heavier goods. Summary of the Utility Model

[0004] The utility model provides a centering mechanism for a heavy-duty tray conveyor line, which solves the problems that during the process of conveying goods by the conveyor line using a tray, when centering the tray, it is easy to cause damage to the roller surface of the roller due to friction between the tray and the roller, and it cannot meet the transportation of heavier goods.

[0005] The technical solution of the utility model is realized as follows:

[0006] A centering mechanism for a heavy-duty tray conveyor line includes a support frame and a lifting frame. The lifting frame is located above the support frame and below the conveyor line, and the support frame is fixedly connected to the bottom of the conveyor line;

[0007] A number of motors are installed at the top of the lifting frame. A number of wire sleeves corresponding to the motors one by one are installed at the top of the support frame. A lead screw is threadedly connected inside the wire sleeve. The output shaft of the motor is coaxially connected to the upper end of the lead screw. A suspension cylinder is installed at the top of the motor. The left and right ends of the top of the lifting frame are respectively fixedly connected with jacking blocks. The jacking blocks are located between two adjacent rollers in the conveyor line. Four positioning cylinders are arranged above the lifting frame. The four positioning cylinders are installed above the conveyor line. The end of the piston rod of the positioning cylinder points to the center of the rectangle where the four suspension cylinders are located.

[0008] Through the above technical solution, the cooperation between the motor and the lead screw realizes the upward movement of the lifting frame. During the upward movement of the lifting frame, the jacking blocks are driven to move upward synchronously. The jacking blocks lift the tray during the upward movement, so that the tray can be separated from the rollers of the conveyor line. The four positioning cylinders can perform centering positioning operations on the tray. The suspension cylinder can suspend and rotate and move the tray during the process of the positioning cylinder pushing the tray, reducing the friction force brought by the weight of the goods during the movement of the tray, making the movement of the tray more labor-saving, and also reducing the friction between the bottom of the tray and the jacking block. This centering positioning operation after lifting the tray and separating it from the rollers of the conveyor line can avoid damage to the roller surface caused by the friction between the tray and the rollers. The suspension cylinder can also meet the centering positioning operation of carrying trays with large weights.

[0009] Optionally, the number of the motors is four, and the number of the wire sleeves is four. The four wire sleeves are located at the four corners of the top of the support frame. A connecting rod is installed between two wire sleeves on the same side of the support frame.

[0010] Through the above technical solution, the connecting rod can ensure that the two motors on the same side can lift synchronously, maintaining the consistency and stability of the jacking operation on the tray.

[0011] Optionally, the jacking blocks are located between two adjacent motors on the same side of the lifting frame.

[0012] Optionally, jacking cylinders are installed at the four corners of the bottom of the lifting frame. The piston rods of the jacking cylinders vertically pass through the lifting frame. The end of the piston rod of the jacking cylinder is fixedly connected with a limiting column. The limiting column is located outside the jacking block.

[0013] Through the above technical solution, the limiting column can position the tray, enabling centering positioning operation after the tray reaches the specified position, and ensuring the stability of the tray during the up and down movement and preventing it from falling easily.

[0014] Optionally, the four positioning cylinders are evenly distributed on the front and rear sides of the conveyor line. The distribution of the four positioning cylinders is rectangular. The four positioning cylinders are fixedly installed on the conveyor line through L-shaped brackets.

[0015] Optionally, the lower end of the L-shaped bracket is fixedly connected to the side surface of the conveyor line. The upper end of the L-shaped bracket is fixedly connected with a support plate. The top of the support plate is movably connected with the positioning cylinder.

[0016] Optionally, the top of the support plate is rotatably connected with a moving plate. The top of the moving plate is fixedly connected with the positioning cylinder.

[0017] Through the above technical solution, the moving plate can rotate relative to the support plate, thereby driving the positioning cylinder to rotate, which is beneficial to adjusting the angle of the positioning cylinder, so that the piston rod of the positioning cylinder can accurately align with the tray for centering positioning.

[0018] Optionally, a fixing plate is installed at the end of the piston rod of the positioning cylinder. Two parallel rollers are rotatably connected to the side of the fixing plate away from the positioning cylinder.

[0019] Through the above technical solution, the rollers contact the outside of the tray under the push of the positioning cylinder, thereby centering the tray.

[0020] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0021] The centering mechanism in the present utility model can center the tray carrying heavy goods without touching the rolling surface of the roller. The lifting frame is lifted by the cooperation of the motor and the lead screw, and the tray is lifted by the jacking block, so that the tray is lifted off the roller. The four limit posts can limit the tray after the tray arrives, so that the tray does not fall after being lifted. When the tray arrives and rises, it is pushed from the four corners of the tray to the center by the four positioning cylinders, so as to center the tray. The four floating cylinders enable the positioning cylinder to remain in a floating state during the process of pushing the tray to move, so that the positioning cylinder can push the tray to move freely with a smaller force, and the tray can move without overcoming a large frictional force, which not only increases the weight of the goods carried by the tray, but also protects the rolling surface of the roller from being damaged due to high-intensity use. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is the three-dimensional view of the centering mechanism installed on the conveyor line in the embodiment Figure Ⅰ ;

[0024] Figure 2 is the three-dimensional view of the centering mechanism installed on the conveyor line in the embodiment Figure Ⅱ ;

[0025] Figure 3 is the top view of the centering mechanism installed on the conveyor line in the embodiment;

[0026] Figure 4 is the three-dimensional view of the centering mechanism in the embodiment Figure Ⅰ (excluding the positioning cylinder);

[0027] Figure 5 is the three-dimensional view of the centering mechanism in the embodiment Figure Ⅱ (excluding the positioning cylinder).

[0028] Explanation of reference numerals: 1, support frame; 2, lifting frame; 3, lifting block; 4, motor; 5, wire sleeve; 6, lead screw; 7, floating cylinder; 8, positioning cylinder; 9, lifting cylinder; 10, limit post; 11, L-shaped bracket; 12, support plate; 13, moving plate; 14, fixing plate; 15, roller; 16, conveyor line; 17, lifting cylinder; 18, connecting rod. Detailed implementation manners

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] The embodiment of the present application discloses a centering mechanism for a heavy-duty pallet conveyor line.

[0031] Embodiment

[0032] According to Figures 1 to 5As shown in the figure, a centering mechanism for an overload pallet conveyor line includes a support frame 1, a lifting frame 2, and four positioning cylinders 8. Both the support frame 1 and the lifting frame 2 are located below the conveyor line 16, and the lifting frame 2 is located above the support frame 1. The support frame 1 is fixedly connected to the bottom of the conveyor line 16.

[0033] At the four corners of the top of the support frame 1, silk sleeves 5 are installed. Between the two silk sleeves 5 on the same side of the support frame 1, a connecting rod 18 is installed. The inside of the silk sleeve 5 is threadedly connected with a lead screw 6. The lead screw 6 is placed vertically. Four motors 4 are installed at the top of the lifting frame 2. The four motors 4 correspond to the four silk sleeves 5 one by one. The output shaft of the motor 4 is vertically downward, and the output shaft of the motor 4 is coaxially connected to the upper end of the lead screw 6. At the left and right ends of the top of the lifting frame 2, jacking blocks 3 are fixedly connected respectively. The jacking blocks 3 are located between two adjacent rollers in the conveyor line 16, and the jacking blocks 3 are located between two adjacent motors 4 at the same end of the lifting frame 2.

[0034] A suspension cylinder 7 is installed at the top of the motor 4. At the four corners of the bottom of the lifting frame 2, jacking cylinders 9 are installed. The piston rod of the jacking cylinder 9 passes vertically through the lifting frame 2, and the end of the piston rod of the jacking cylinder 9 is fixedly connected with a limit post 10. The limit post 10 is located outside the jacking block 3.

[0035] Above the lifting frame 2, four positioning cylinders 8 are arranged. The four positioning cylinders 8 are installed above the conveyor line 16. The four positioning cylinders 8 are fixedly installed with the conveyor line 16 through L-shaped brackets 11. The lower end of the L-shaped bracket 11 is fixedly connected to the side of the conveyor line 16. The upper end of the L-shaped bracket 11 is fixedly connected with a support plate 12. The top of the support plate 12 is rotatably connected with a moving plate 13. The top of the moving plate 13 is fixedly connected with the positioning cylinder 8. The positioning cylinder 8 faces the conveyor line 16. The ends of the piston rods of the four positioning cylinders 8 all point to the center of the rectangle where the four suspension cylinders 7 are located. The end of the piston rod of the positioning cylinder 8 is installed with a fixing plate 14. On the side of the fixing plate 14 away from the positioning cylinder 8, two parallel rollers 15 are rotatably connected.

[0036] A lifting cylinder 17 is installed at the top of the support frame 12. The lifting cylinder 17 can replace the motor 4 to drive the lifting frame 2 to move up and down.

[0037] Working principle:

[0038] When the conveyor line 16 conveys the pallet to the position where the centering mechanism is installed, the motor 4 is started, and the motor 4 drives the screw 6 to rotate through the rotation of the output shaft, so that the motor 4 moves upward. In the process of moving upward, the motor 4 drives the lifting frame 2 to move upward, and the lifting frame 2 drives the lifting block 3 to move upward. The lifting block 3 moves upward and contacts the bottom of the pallet, thereby lifting the pallet upward, so that the pallet is out of contact with the roller of the conveyor line 16. Start the lifting cylinder 9, and the piston rod of the lifting cylinder 9 is pushed out to drive the limit column 10 to move upward. The four limit columns 10 move upward to limit the pallet, so as to prevent the pallet from falling during the rising process and improve the stability and safety of the pallet. Start the suspension cylinder 7 and the positioning cylinder 8, the piston rod of the positioning cylinder 8 extends out, driving the roller 15 to contact the side of the pallet. The pallet is pushed by the roller 15 to be centered so that the pallet is located in the middle of the conveyor line 16 and its direction is parallel to the conveying direction of the conveyor line 16. The suspension cylinder 7 provides a suspension force for the pallet during its movement, reducing the friction between the pallet and the top of the suspension cylinder 7 and the top of the lifting block 3, making the movement of the pallet more labor-saving. The suspension cylinder 7 drives the object to suspend, rotate and deflect, which belongs to the prior art and will not be elaborated here.

[0039] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centering mechanism for a heavy-loaded pallet conveyor line, characterized in that: It includes a support frame and a lifting frame, wherein the lifting frame is located above the support frame and below the conveyor line, and the support frame is fixedly connected to the bottom of the conveyor line; A plurality of motors are installed on the top of the lifting frame, and a plurality of thread sleeves corresponding to the motors are installed on the top of the support frame. The internal threads of the thread sleeves are connected with a screw rod, and the output shaft of the motor is coaxially connected with the upper end of the screw rod. A suspension cylinder is installed on the top of the motor, and the left and right ends of the top of the lifting frame are respectively fixedly connected with jacking blocks, and the jacking block is located between two adjacent rollers in the conveyor line. Four positioning cylinders are arranged above the lifting frame, and the four positioning cylinders are installed above the conveyor line. The piston rod ends of the positioning cylinders point to the center of the rectangle where the four suspension cylinders are located.

2. A heavy-duty pallet conveyor line centering mechanism according to claim 1, characterized in that: The number of the motors is four, the number of the wire sleeves is four, the four wire sleeves are located at the four corners of the top of the support frame, and a connecting rod is installed between two wire sleeves located on the same side of the support frame.

3. The centering mechanism for a heavy-duty pallet conveyor line according to claim 1, characterized in that: The lifting block is located between two adjacent motors on the same side of the lifting frame.

4. The centering mechanism for a heavy-duty pallet conveyor line according to claim 1, characterized in that: Lifting cylinders are installed at the four corners of the bottom of the lifting frame. The piston rod of the lifting cylinder vertically passes through the lifting frame upward. The end of the piston rod of the lifting cylinder is fixedly connected to a limiting column, and the limiting column is located on the outside of the lifting block.

5. The centering mechanism for a heavy-duty pallet conveyor line according to claim 1, characterized in that: The four positioning cylinders are evenly distributed on the front and rear sides of the conveyor line. The four positioning cylinders are distributed in a rectangular shape. The four positioning cylinders are installed and fixed to the conveyor line through an L-shaped bracket.

6. A heavy-duty pallet conveyor line centering mechanism according to claim 5, characterized in that: The lower end of the L-shaped bracket is fixedly connected to the side of the conveyor line, the upper end of the L-shaped bracket is fixedly connected to a support plate, and the top of the support plate is movably connected to the positioning cylinder.

7. A heavy-duty pallet conveyor line centering mechanism according to claim 6, characterized in that: The top of the support plate is rotatably connected with a moving plate, and the top of the moving plate is fixedly connected with the positioning cylinder.

8. The centering mechanism for a heavy-duty pallet conveyor line according to claim 1, characterized in that: A fixing plate is installed at the end of the piston rod of the positioning cylinder, and a side of the fixing plate away from the positioning cylinder is rotatably connected to two rollers arranged in parallel.

Images