Conveying arm with tensioning device

Abstract

The utility model discloses a conveying arm with a tensioning device, which structurally comprises an arm body, a conveying chain is arranged on the arm body and used for conveying materials along the length direction of the arm body, the tensioning device is arranged on the arm body and used for tensioning the conveying chain, and the tensioning device comprises a tensioning spring and a tensioning block. The tensioning device is characterized in that a tensioning box is connected to the arm body, the tensioning block is arranged in the tensioning box, and the conveying chain extends into the tensioning box to be connected with the tensioning block in an abutting mode. The conveying arm conveys materials through the conveying chain, and the conveying arm can be used as a conveying device and can also be used as a buffering or storing device. And through the arrangement of the tensioning device, the working stability of the conveying chain is good.

Description

Technical Field

[0001] The utility model relates to a conveying arm for conveying materials, in particular to a conveying arm with a tensioning device. Background Art

[0002] The conveying arm is used to convey materials in its length direction so that the materials can move positions. To achieve the movement of materials, the existing technologies usually adopt power mechanisms such as cylinders and lead screws to convey single-piece materials, and the one-time material conveying volume is relatively small, and the conveying efficiency is not high. In addition, the existing such conveying device cannot realize the arrangement of materials and is not suitable for being applied to the caching or storage of materials. In some application fields, such as the tobacco preparation technology field, a flue-curing barn is usually required. The tobacco leaves are manually woven onto the rod-shaped body, and then the rod-shaped body is placed on the shelf arranged on the wall body of the flue-curing barn, so as to realize the feeding of the flue-curing barn. In this feeding process, it is mainly carried out by manpower, with high labor intensity and low operation efficiency. Therefore, it is particularly necessary to adopt a high-efficiency and stable-running conveying device. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: to provide a conveying arm with a tensioning device, which can realize the conveying, caching and storage of a large number of materials, and has good conveying stability for the materials.

[0004] To solve the above technical problem, the technical solution of the utility model is: a conveying arm with a tensioning device, including an arm body, on which a conveying chain is arranged, and the conveying chain is used to convey materials along the length direction of the arm body. The tensioning device is arranged on the arm body and used to tension the conveying chain. The tensioning device includes a tensioning spring and a tensioning block, and the tensioning spring acts on the tensioning block elastically. It is characterized in that a tensioning box is connected to the arm body, the tensioning block is arranged in the tensioning box, and the conveying chain extends into the tensioning box and abuts against the tensioning block.

[0005] When realizing the conveying of materials, the materials need to be clamped onto the clamping body, and the clamping body is placed on the conveying chain and is pushed forward by the conveying chain. The conveying chain can push a single clamping body forward, or can realize caching of multiple clamping bodies on the conveying arm, or multiple clamping bodies are arranged on the conveying arm for storage. It can also be that after the materials clamped on the clamping body are processed, they will be pushed out in the reverse direction by the conveying chain for discharging. The tensioning device generally provides a real-time tensioning effect for the conveying chain.

[0006] Further, a connecting frame is provided on the arm body. The connecting frame extends into the tensioning box, and both the spring and the tensioning block are connected to the connecting frame. Through the arrangement of the connecting frame, the connection and fixation of the tensioning block are realized, and the stability of the tensioning block is ensured by the stability of the overall structure of the conveying arm, so as to facilitate providing a stable tensioning effect for the conveying chain.

[0007] Further, the connecting frame includes two parallel longitudinal rods, and a cross rod is vertically connected to the two longitudinal rods. The spring and the tensioning block are connected to the cross rod. This structure of the connecting frame well adapts to the arrangement of the spring and the tensioning block, with simple structure and good working reliability.

[0008] Further, a number of connecting rods are provided on the tensioning block. The connecting rods are intermittently inserted through the cross rod, and the outer periphery of the connecting rods is sleeved with the spring. The two ends of the spring respectively abut against the cross rod and the tensioning block. A pull rod is inserted through the cross rod, and the lower end of the pull rod is threadedly connected to the tensioning block. The disk head provided at the upper end of the pull rod is used to support on the cross rod. The arrangement of the connecting rods improves the movement stability of the tensioning block. The arrangement of the pull rod facilitates the adjustment of the position of the tensioning block and is convenient for installation.

[0009] Further, a through operation hole is provided on the wall body of the tensioning box, and the operation hole corresponds to the position of the disk head. With the provision of the operation hole, a wrench can be used to rotate the disk head on the pull rod from the position of the operation hole, thus facilitating the adjustment of the position of the tensioning block on the pull rod.

[0010] Further, a through tightening hole is also provided on the arm body of the tensioning box. A tightening nut is threadedly connected to the pull rod, and the tightening nut is located below the cross rod. The tightening hole is arranged corresponding to the position of the tightening nut. Through the arrangement of the tightening hole, it is convenient to adjust the position of the tightening nut on the pull rod. By the support of the tightening nut on the cross rod, the moving distance of the tensioning block towards the cross rod direction is limited, so as to prevent the conveying chain from being instantaneously stressed too much and excessively changing the position of the tensioning block, making the cooperation stability between the conveying chain and the tensioning block good, the conveying chain not easy to fall off, and ensuring the working stability of the conveying chain.

[0011] Further, a limiting rib is provided on the outer peripheral surface of the tensioning block. The limiting rib extends along the length direction of the outer peripheral surface of the tensioning block, and the limiting rib is located at the middle position in the thickness direction of the tensioning block. The limiting rib is used to cooperate with the notch at the end of the conveying chain link, so that the cooperation between the conveying chain and the outer peripheral surface of the tensioning block is stable.

[0012] Furthermore, several partition blocks are provided inside the box body. These partition blocks are arranged on opposite sides of the tensioning block and are used to support the opposite side walls of the box body. An interval for the conveying chain to pass through is formed between the partition block and the tensioning block. By providing the partition block, the overall strength of the box body can be effectively guaranteed, so as to prevent the box body from deforming and affecting the operation of the conveying chain. The partition block can also provide a certain limiting effect on the movement of the conveying chain, making the movement stability of the conveying chain good.

[0013] Furthermore, a guiding hole is provided on the side wall of the box body, and a guiding pin is provided on the tensioning block and inserted into the guiding hole with a clearance. The cooperation of the guiding hole and the guiding pin limits the movement of the tensioning block and improves the movement stability of the tensioning block.

[0014] Compared with the prior art, the utility model has the following beneficial effects: A conveying chain is provided on the conveying arm. Through the action of the conveying chain, the material is moved in the length direction of the conveying arm, so that the conveying arm can not only convey the material, but also cache the material on the conveying arm. Combined with the walking action of the transportation machinery, the material can be conveyed over a long distance, and the conveying efficiency of the material is high. In addition, the conveying arm can also be used as a storage device. By arranging it in the corresponding space, the material can stay on the conveying arm. When the material enters the conveying arm, it is realized by the movement of the conveyor belt, with high automation degree, which can effectively guarantee the working efficiency and reduce the labor intensity. By providing a tensioning device, the conveying chain is in a reasonable tension state, so as to effectively guarantee the working stability of the conveying chain. A box body is connected to the arm body, and the tensioning device is arranged inside the box body. The structure is simple and compact, and can provide a good tensioning effect for the conveying chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the three-dimensional structure diagram of the conveying arm.

[0016] Figure 2 is the structure diagram of the conveying arm after removing the cover plate.

[0017] Figure 3 is Figure 2 the enlarged structure diagram of the tensioning device in

[0018] In the figure: 1. Arm body; 2. Conveying chain; 3. Box body; 4. Operation hole; 5. Tightening hole; 6. Connecting seat; 7. Tensioning block; 71. Limiting rib; 72. Guiding pin; 8. Partition block; 9. Spring; 10. Intermediate sprocket; 11. Connecting rod; 12. Pull rod; 13. Tightening nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In conjunction with the accompanying drawings of the specification, the structure of the conveying arm of the belt tensioning device includes an arm body 1, which is a split structure, including two clamping plates arranged in parallel, and a connecting seat 6 is respectively arranged at both ends of the arm body 1, and a sprocket is rotatably connected to the connecting seat 6, and the connecting seat 6 is fixed between the two clamping plates. A conveying chain 2 is connected to the two sprockets, and the conveying chain 2 protrudes to the upper side of the arm body 1. In order to support the conveying chain 2, a pair of separated supporting bodies are provided between the two clamping plates. The supporting bodies are strip-shaped and extend along the length direction of the arm body 1. The supporting bodies are used to support the conveying chain 2 from the lower side of the conveying chain 2. In the actual application process, two conveying arms need to be used together. In the field of tobacco preparation, the two ends of the clamping body with tobacco leaves are respectively placed on the conveying chains 2 on the two conveying arms. The two sprockets on the same end side of the two conveying arms are connected to a power output shaft, and the power output shaft is connected to the motor transmission, and the motor provides power for the movement of the conveying chain 2. The conveying chain 2 pushes the clamping body placed thereon forward, thereby enabling the material to be conveyed in the length direction of the arm body 1 .

[0020] A tensioning device is also provided on the arm body 1, and the tensioning device is used to tension the conveying chain 2. The tensioning device includes a tensioning spring 9 and a tensioning block 7. The tensioning spring 9 acts elastically on the tensioning block 7, and the tensioning block 7 realizes the tensioning of the conveying chain 2 by abutting against the conveying chain 2. In the specific setting, a tensioning box is connected to the arm body 1, and the tensioning box is communicated with the inside of the arm body 1. The tensioning block 7 is arranged in the tensioning box. The conveying chain 2 turns at the tensioning box position and extends into the tensioning box, and abuts against the tensioning block 7 in the tensioning box. In order to adapt to the bending of the conveying chain 2, an intermediate sprocket 10 is also provided at the two ends of the tensioning box. The intermediate sprocket 10 realizes the bending of the conveying chain 2 by abutting against the conveying chain 2.

[0021] For the convenience of connection, a connecting frame is provided inside the arm body 1, and the connecting frame is fixedly connected to the clamping plate by bolts. The connecting frame extends into the tensioning box, and the spring 9 and the tensioning block 7 are both connected to the connecting frame. As shown in the figure, the connecting frame includes two longitudinal rods arranged in parallel, and the longitudinal rods are arranged along the length direction perpendicular to the arm body 1. A cross rod is vertically connected to the two longitudinal rods, and the spring 9 and the tensioning block 7 are connected to the cross rod. A number of connecting rods 11 are provided on the tensioning block 7, and the connecting rods 11 are inserted through the cross rod with a gap. The spring 9 is sleeved on the outer periphery of the connecting rod 11, and the two ends of the spring 9 respectively abut against the cross rod and the tensioning block 7, and the spring 9 urges the tensioning block 7 to maintain a tendency to move downward in the figure. A pull rod 12 is inserted through the cross rod, the lower end of the pull rod 12 is threadedly connected to the tensioning block 7, and the disc head provided at the upper end of the pull rod 12 is used to support on the cross rod. The tensioning block 7 shown in the figure is in the maximum tensioning position. At the beginning of tensioning, there will be a certain distance between the upper end of the connecting rod 11 and the cross rod. Rotating the pull rod 12 will adjust the distance between the upper end of the pull rod 12 and the cross rod, so as to determine whether the conveyor chain 2 needs to be tensioned. For the convenience of this adjustment, a through operation hole 4 is provided on the wall of the tensioning box, and the operation hole 4 corresponds to the position of the disc head, and a wrench can be inserted into the operation hole 4 to realize the cooperative adjustment of the disc head. A through tightening hole 5 is also provided on the arm body 1 of the tensioning box, the tightening hole 5 is located below the cross rod, a tightening nut 13 is threadedly connected to the pull rod 12, the tightening nut 13 is located below the cross rod, and the tightening hole 5 is provided corresponding to the position of the tightening nut 13.

[0022] The outer peripheral surface of the tensioning block 7 is a smooth curved surface, and a limiting convex strip 71 is provided on the outer peripheral surface of the tensioning block 7. The limiting convex strip 71 protrudes to the outer peripheral surface of the tensioning block 7 and extends along the length direction of the outer peripheral surface of the tensioning block 7. The limiting convex strip 71 is located at the middle position in the thickness direction of the tensioning block 7. The conveyor chain 2 is in sliding fit with the outer peripheral surface of the tensioning block 7, and the limiting convex strip 71 is inserted into the notch of the chain link of the conveyor chain 2 to limit the conveyor chain 2 in the thickness direction of the tensioning block 7.

[0023] The tensioning box is of a split structure and has a detachable cover plate. The cover plate is buckled on the box body 3 to facilitate the assembly of the conveyor chain 2. A number of partition blocks 8 are provided in the box body 3, and these partition blocks 8 are arranged on the opposite sides of the tensioning block 7. The partition blocks 8 are used to support the bottom wall and the cover plate of the box body 3, and an interval for the conveyor chain 2 to pass through is formed between the partition blocks 8 and the tensioning block 7.

[0024] Guide holes are respectively provided on the cover plate and the bottom wall of the box body 3, and a protruding guide pin 72 is provided on each of the opposite side surfaces of the tensioning block 7. The guide pin 72 is inserted into the guide hole with a gap.

Claims

1. A conveying arm with a tensioning device, comprising an arm body, a conveying chain is arranged on the arm body, the conveying chain is used to realize the conveying of materials along the length direction of the arm body, the tensioning device is arranged on the arm body and is used to tension the conveying chain, the tensioning device comprises a tensioning spring and a tensioning block, the tensioning spring acts elastically on the tensioning block, and is characterized in that: A tension box is connected to the arm body, the tension block is arranged in the tension box, and the conveying chain extends into the tension box and abuts against the tension block.

2. The conveying arm with a tensioning device according to claim 1, characterized in that: A connecting frame is arranged on the arm body, the connecting frame extends into the tensioning box, and the spring and the tensioning block are both connected to the connecting frame.

3. The conveying arm with a tensioning device according to claim 2, characterized in that: The connecting frame comprises two longitudinal rods arranged in parallel, a cross rod is vertically connected to the two longitudinal rods, and the spring and the tensioning block are connected to the cross rod.

4. The conveying arm with a tensioning device according to claim 2, characterized in that: The tensioning block is provided with a plurality of connecting rods, which are intermittently connected to the cross bar. The outer periphery of the connecting rod is sleeved with the spring, and the two ends of the spring respectively touch the cross bar and the tensioning block; a pull rod is connected to the cross bar, and the lower end of the pull rod is threadedly connected to the tensioning block, and the disc head arranged at the upper end of the pull rod is used to support the cross bar.

5. The conveying arm with a tensioning device according to claim 4, characterized in that: A transparent operation hole is arranged on the wall of the tension box, and the operation hole corresponds to the position of the disc head.

6. The conveying arm with a tensioning device according to claim 5, characterized in that: A transparent tightening hole is also provided on the arm body of the tensioning box, and a tightening nut is threadedly connected to the pull rod. The tightening nut is located on the lower side of the cross bar, and the tightening hole is arranged corresponding to the position of the tightening nut.

7. The conveying arm with a tensioning device according to any one of claims 1 to 6, characterized in that: A limiting convex strip is arranged on the outer circumferential surface of the tension block, and the limiting convex strip extends along the length direction of the outer circumferential surface of the tension block, and the limiting convex strip is located at the middle position of the tension block in the thickness direction.

8. The conveying arm with a tensioning device according to any one of claims 1 to 6, characterized in that: A plurality of spacers are arranged in the tension box, and the spacers are arranged on opposite sides of the tension block. The spacers are used to support the opposite side walls of the tension box; a gap is formed between the spacers and the tension block for the conveying chain to pass through.

9. The conveying arm with a tensioning device according to any one of claims 1 to 6, characterized in that: A guide hole is arranged on the side wall of the tensioning box, and a guide pin which is inserted into the guide hole with a gap is arranged on the tensioning block.

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