A chain rigid tensioning mechanism

Abstract

The present invention relates to a chain rigid tensioning mechanism, which belongs to the technical field of roller conveyor equipment. It comprises a tensioning mounting frame fixed above the supporting seat of the roller conveyor, a tilting plate horizontally hinged on one side of the tensioning mounting frame, a tensioning rod hinged to the frame of the roller conveyor at the upper end, and a tilting plate support hinged to the lower end of the tensioning rod and adjustable up and down along the tensioning rod; the tilting plate support is provided with a supporting surface, and the supporting surface supports the tilting plate from the bottom of the tilting plate. The tensioning mechanism can easily realize the tensioning of the chain, is simple to operate, is convenient for on-site installation and debugging, has high safety and stability, is economical and reliable, can effectively ensure the smooth operation of the chain, improves the conveying efficiency of the roller conveyor, and is suitable for wide promotion and application.

Description

Technical Field

[0001] The invention belongs to the technical field of roller conveyor equipment and relates to a chain rigid tensioning mechanism. Background Art

[0002] The production line for sawing aluminum bars mainly includes buffer ingot storage machine, chain transfer machine, two-way translation feeder, roller conveyor, sawing machine components, material head flip unloader, material head elevator, sizing machine, short ingot packing machine, chip suction briquetting machine, cyclone dust collector, briquetting elevator and other equipment, which realize the functions of loading, conveying, sawing, material head and tail transmission, sizing, coding, packing and aluminum chip collection and briquetting. Among them, the roller conveyor is used for the transportation of aluminum bars.

[0003] The roller conveyor drives the chain drive mechanism composed of a sprocket and a chain through a motor. The chain drive mechanism further drives the roller to rotate, and uses the friction between the roller and the aluminum rod carried on it to drive the aluminum rod to be transported. During the entire working process, the chain should always be in a tensioned state. However, in reality, the chain often becomes loose, resulting in unstable operation and even transmission failure, causing safety hazards. Therefore, a tensioning mechanism is required to tension the chain. Existing tensioning mechanisms are either complex in structure and high in cost, or simple in structure but inconvenient to install, and their application range is limited. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a chain rigid tensioning mechanism that is simple to operate, easy to install, economical and reliable, so as to solve the problem that the chain in the above-mentioned roller conveyor is loose, resulting in unstable operation of the conveyor and easy transmission failure.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A chain rigid tensioning mechanism comprises a tensioning mounting frame fixed above a supporting seat of a roller conveyor, a tilting plate horizontally hinged on one side of the tensioning mounting frame, a tensioning rod hinged at the upper end to the frame of the roller conveyor, and a tilting plate support hinged at the lower end of the tensioning rod and adjustable up and down along the tensioning rod; the tilting plate support is provided with a supporting surface, which supports the tilting plate from below the tilting plate.

[0007] Furthermore, a first pin shaft is horizontally inserted on the tilting plate support, and a through hole is provided on the circumferential surface of the first pin shaft; an external thread is provided on the circumferential surface of the lower end of the tensioning rod, and the tensioning rod is inserted into the through hole of the first pin shaft, and the first pin shaft is locked by an upper nut and a lower nut mounted on the external thread of the lower end of the tensioning rod.

[0008] Furthermore, locking surfaces are symmetrically provided on the circumferential surface of the first pin shaft, and after the upper nut and the lower nut lock the first pin shaft, their end surfaces fit with the locking surfaces.

[0009] Furthermore, a second pin is horizontally inserted at the upper end of the tensioning rod, and both ends of the second pin are sleeved with tensioning rod hinge seats, and the tensioning rod hinge seats are fixed on the frame of the roller conveyor.

[0010] Furthermore, the tension rod articulated seat is in an inverted U shape, and the top surface of the tension rod articulated seat is welded to the frame of the roller conveyor.

[0011] Furthermore, one end of the tilting plate hinged to the tensioning mounting frame is connected to a transmission shaft, and both ends of the transmission shaft are respectively provided with tilting plate hinge seats, and the tilting plate hinge seats are fixed on the tensioning mounting frame.

[0012] Furthermore, the tilting plate hinge seat is fixed to the tensioning mounting frame by screws.

[0013] Furthermore, the tensioning mounting frame is welded to a supporting seat of the roller conveyor.

[0014] Furthermore, a tensioning shaft is provided at the upper end of the tensioning rod, and the tensioning shaft and the external thread at the lower end of the tensioning rod are integrally formed to form the tensioning rod.

[0015] Furthermore, a tensioning shaft is provided at the upper end of the tensioning rod, and the tensioning shaft is assembled with the external thread at the lower end of the tensioning rod to form the tensioning rod.

[0016] The beneficial effects of the present invention are:

[0017] (1) The chain rigid tensioning mechanism disclosed in the present invention, when the chain at any position of the roller conveyor becomes loose, it is only necessary for the tilting plate support to move downward along the tensioning rod for a certain displacement, or for the tilting plate support to rotate counterclockwise for fine adjustment, so that the tilting plate loses the supporting force provided by the tilting plate support, and the tilting plate rotates clockwise around the transmission shaft under the action of its own gravity, and the chain will be tensioned accordingly. When the chain reaches the tensioning requirement, tighten the upper and lower nuts to achieve the rigid tensioning of the entire chain. Compared with the existing external tensioning mechanism, the entire chain rigid tensioning mechanism has a simpler structure, is more convenient to adjust, and is highly practical.

[0018] (2) The chain rigid tensioning mechanism disclosed in the present invention can easily realize chain tensioning, is simple to operate, is convenient for on-site installation and debugging, has high safety and stability, is economical and reliable, can effectively ensure the smooth operation of the chain, and improves the conveying efficiency of the roller conveyor, and is suitable for wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention provides the following drawings for illustration:

[0020] Figure 1 It is a structural schematic diagram of the chain rigid tensioning mechanism;

[0021] Figure 2 for Figure 1 Schematic diagram of the installation of the chain rigid tensioning mechanism shown.

[0022] Figure numerals: tensioning mounting frame 1, tilting plate 2, tensioning rod 3, external thread 301, tensioning shaft 302, tilting plate support 4, first pin 5, upper nut 6, lower nut 7, second pin 8, tensioning rod articulated seat 9, transmission shaft 10, tilting plate articulated seat 11, motor 12, sprocket 13, chain 14, support seat 15, frame 16. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 and Figure 2 As shown, this embodiment provides a chain rigid tensioning mechanism, including a tensioning mounting frame 1 fixed above a supporting seat 15 of a roller conveyor, a tilting plate 2 horizontally hinged on one side of the tensioning mounting frame 1, a tensioning rod 3 whose upper end is hinged to a frame 16 of the roller conveyor, and a tilting plate support 4 hinged to the lower end of the tensioning rod 3 and adjustable up and down along the tensioning rod 3; the tilting plate support 4 is provided with a supporting surface, which supports the tilting plate 2 from below the tilting plate 2.

[0025] Specifically, in this embodiment, an external thread 301 is provided on the circumferential surface of the lower end of the tension rod 3, and a tension shaft 302 is provided on the upper end of the tension rod 3. The tension shaft 302 and the external thread 301 at the lower end of the tension rod 3 are assembled to form the tension rod 3. A first pin 5 is horizontally inserted on the tilting plate support 4. A through hole is provided on the circumferential surface of the first pin 5, and locking surfaces are symmetrically provided. The tension rod 3 is inserted into the through hole of the first pin 5, and the upper nut 6 and the lower nut 7 sleeved on the external thread 301 at the lower end of the tension rod 3 are screwed and tightened to fit the locking surfaces on the first pin 5 to lock the first pin 5. A second pin 8 is horizontally inserted on the circumferential surface of the tension shaft 302 at the upper end of the tension rod 3, and both ends of the second pin 8 are sleeved with an inverted U-shaped tension rod hinge seat 9. One end of the tilting plate 2 hinged to the tensioning mounting frame 1 is connected to a transmission shaft 10, and both ends of the transmission shaft 10 are respectively provided with tilting plate hinge seats 11, which are fixed to the tensioning mounting frame 1 by screws.

[0026] like Figure 2As shown, when installing and debugging the chain rigid tensioning mechanism, first, install the sprocket 13 on the motor 12, and install the motor 12 on the tilting plate 2; then, assemble the components included in the chain rigid tensioning mechanism to form a four-bar linkage, conduct and install the chain 14 on the sprocket 13, adjust the position of the tensioning mounting frame 1 to ensure that the chain 14 is vertical, and weld the two ends of the tensioning mounting frame 1 to the support seat 15 of the roller conveyor; then, the chain 14 is naturally vertical under the influence of the deadweight of the chain rigid tensioning mechanism, adjust the position of the tensioning rod 3, and weld the top surface of the tensioning rod articulated seat 9 to the frame 16 of the roller conveyor; finally, tighten the upper nut 6 and the lower nut 7 to lock the first pin 5, and also fix the tilting plate support 4 and the tensioning rod 3.

[0027] When the chain 14 at any position of the roller conveyor becomes loose, it is only necessary to loosen the lower nut 7, and the tilting plate support 4 will move downward along the tensioning rod 3 for a certain displacement, and can rotate counterclockwise around the first pin 5 for a certain angle, so that the tilting plate 2 loses the supporting force provided by the tilting plate support 4, and rotates clockwise around the transmission shaft 10 under the action of its own gravity, and the chain 14 will be tensioned accordingly. When the chain 14 reaches the tensioning requirement, tighten the upper nut 6 and the lower nut 7 to fix the entire chain rigid tensioning mechanism.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A chain rigid tensioning mechanism, characterized in that: The invention comprises a tensioning mounting frame fixed above the supporting seat of the roller conveyor, a tilting plate horizontally hinged on one side of the tensioning mounting frame, a tensioning rod hinged on the upper end of the frame of the roller conveyor, and a tilting plate support hinged on the lower end of the tensioning rod and adjustable up and down along the tensioning rod; the tilting plate support is provided with a supporting surface, and the supporting surface holds the tilting plate from the bottom of the tilting plate; a first pin shaft is horizontally inserted on the tilting plate support, and a through hole is provided on the circumferential surface of the first pin shaft; an external thread is provided on the circumferential surface of the lower end of the tensioning rod, the tensioning rod is inserted into the through hole of the first pin shaft, and the first pin shaft is locked by an upper nut and a lower nut sleeved on the external thread of the lower end of the tensioning rod; The first pin shaft is symmetrically provided with locking surfaces on its circumferential surface, and after the upper nut and the lower nut lock the first pin shaft, their end surfaces fit with the locking surfaces; A second pin is horizontally inserted at the upper end of the tensioning rod, and both ends of the second pin are sleeved with tensioning rod hinge seats, and the tensioning rod hinge seats are fixed on the frame of the roller conveyor.

2. The chain rigid tensioning mechanism according to claim 1, characterized in that: The tension rod articulated seat is in an inverted U shape, and the top surface of the tension rod articulated seat is welded to the frame of the roller conveyor.

3. The chain rigid tensioning mechanism according to claim 1, characterized in that: One end of the tilting plate hinged with the tensioning mounting frame is connected to a transmission shaft, and both ends of the transmission shaft are respectively provided with tilting plate hinge seats, and the tilting plate hinge seats are fixed on the tensioning mounting frame.

4. The chain rigid tensioning mechanism according to claim 3, characterized in that: The tilting plate hinge seat is fixed on the tensioning mounting frame by screws.

5. The chain rigid tensioning mechanism according to claim 1, characterized in that: The tensioning mounting frame is welded to the supporting seat of the roller conveyor.

6. The rigid chain tensioning mechanism according to claim 1, characterized in that: The upper end of the tension rod is provided with a tension shaft, and the tension shaft and the external thread at the lower end of the tension rod are integrally formed to form the tension rod.

7. The rigid chain tensioning mechanism according to claim 1, characterized in that: The upper end of the tension rod is provided with a tension shaft, and the tension shaft is assembled with the external thread at the lower end of the tension rod to form the tension rod.

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