A follow-up type roller chain tensioner

Abstract

The utility model discloses a follow -up formula roller chain tensioner, including mounting bracket, the inside rotation of mounting bracket is connected with the tension wheel, the front side of mounting bracket is provided with the slot, the inside plug connection of slot has the plug -in block, the inside screw thread connection of mounting bracket has the bolt, the bolt is connected with plug -in block the screw thread, the bottom of plug -in block is provided with telescopic subassembly, the bottom of plug -in block is provided with the connecting plate through telescopic subassembly, the top of connecting plate is overlapped and is provided with the spring, the bottom of connecting plate is provided with adjusting assembly, the bottom of connecting plate is provided with the mounting plate through adjusting assembly. The follow -up formula roller chain tensioner, when the spring appears damage, can replace the spring alone, avoided because spring damage and led to the whole tensioner scrapping condition, significantly reduced the cost of equipment maintenance.

Description

Technical Field

[0001] This utility model relates to the field of roller chain tensioning technology, and in particular to a follower-type roller chain tensioning device. Background Technology

[0002] Oil drilling rig chains are one of the key components used in oil drilling operations to transmit power and achieve mechanical transmission. They play an important role in many systems of oil drilling rigs. Roller chains are the most commonly used type of chain in oil drilling rigs. They consist of inner chain plates, outer chain plates, pins, bushings, and rollers. Roller chains have high strength and wear resistance, and can withstand large loads. During the use of roller chains, a follow-up roller chain tensioning device is often used to perform follow-up tensioning of the roller chain.

[0003] Chinese Patent Application Publication No. CN209800650U discloses a transmission chain follow-up automatic tensioning device, belonging to the field of mechanical transmission technology. It includes a base, an upper support plate of a spring mechanism, a spring, an arc-shaped tensioning block bracket, an arc-shaped tensioning block, a lower support plate of the spring mechanism, and a triangular bracket. In this invention, the arc-shaped tensioning block swings with the transmission chain. When the transmission chain is pushed outward, the tensioning device, through the compression spring, maintains the tensioned state and is forced to move outward. The arc-shaped tensioning block applies a reaction force to tension the transmission chain. When the transmission chain mechanism returns to its original position under its own weight, the tensioning device, through the spring's rebound, causes the arc-shaped tensioning block to automatically press against the transmission chain, thus achieving the tensioning function of the transmission chain.

[0004] Although the aforementioned tensioning device can tension the roller chain by means of a spring, the spring is fixedly installed inside the tensioning device and cannot be disassembled. As the core elastic element of the tensioning device, the spring operates in a harsh environment and is subjected to repeated tensile and compressive stresses over a long period of time, which can easily lead to fatigue damage, loss of elasticity, or even breakage. Since the spring cannot be disassembled separately, once it is damaged, maintenance personnel cannot inspect, repair, or replace it individually, and the entire tensioning device needs to be replaced, which can easily lead to a waste of resources. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a follow-up roller chain tensioning device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A follower-type roller chain tensioning device includes a mounting frame, a tension wheel rotatably connected inside the mounting frame, a slot on the front side of the mounting frame, a plug inserted into the slot, a bolt threaded inside the mounting frame, the bolt threadedly connected to the plug, a telescopic component at the bottom of the plug, a connecting plate at the bottom of the plug via the telescopic component, a spring overlapping the top of the connecting plate, an adjusting component at the bottom of the connecting plate, and a mounting plate at the bottom of the connecting plate via the adjusting component.

[0007] Preferably, the telescopic assembly includes a telescopic rod fixedly installed at the bottom of the insert block, a telescopic sleeve slidably connected to the surface of the telescopic rod, and the telescopic sleeve being fixedly connected to the connecting plate.

[0008] Preferably, the adjusting assembly includes a threaded rod rotatably connected inside the connecting plate, the threaded rod being threadedly connected to the mounting plate, and a turntable being fixedly installed at the bottom end of the threaded rod.

[0009] Preferably, a guide rod is fixedly installed at the bottom of the connecting plate, and the guide rod is slidably connected to the mounting plate.

[0010] Preferably, a connecting bracket is fixedly installed on the rear side of the mounting plate, and the connecting bracket has a through mounting hole.

[0011] Preferably, the insert has a T-shaped structure, the slot is adapted to the insert, and the insert is made of stainless steel.

[0012] Preferably, there are multiple guide rods, and the multiple guide rods are symmetrically distributed.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When the spring of this follower roller chain tensioning device is damaged, the bolt is removed from the insert block and the mounting bracket, and then the mounting bracket is moved backward to separate the slot from the insert block. The mounting bracket is then disassembled, and the spring is removed. A new spring is then fitted onto the telescopic component so that the slot is aligned with the insert block. The mounting bracket is then moved forward so that the insert block is in the appropriate position in the slot. Finally, the bolt is installed into the mounting bracket and the insert block, thus completing the spring replacement. The spring can be replaced separately, avoiding the situation where the entire tensioning device is scrapped due to spring damage, and significantly reducing the equipment maintenance cost. Attached Figure Description

[0014] Figure 1 This is a three-dimensional perspective view of the present invention; Figure 2 This is a bottom view of the present invention; Figure 3 This is an exploded view of a partial structure of the present invention; Figure 4This is a partial structural diagram of the present invention.

[0015] In the diagram: 1. Mounting bracket; 2. Tensioning wheel; 3. Slot; 4. Insert block; 5. Bolt; 6. Telescopic rod; 7. Telescopic sleeve; 8. Connecting plate; 9. Spring; 10. Threaded rod; 11. Turntable; 12. Mounting plate; 13. Guide rod; 14. Connecting bracket; 15. Mounting hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figure 1-4 A follower-type roller chain tensioning device includes a mounting frame 1, a tension wheel 2 rotatably connected inside the mounting frame 1, a slot 3 on the front side of the mounting frame 1, and a plug 4 with a T-shaped structure inserted into the slot 3. The slot 3 and the plug 4 are adapted to each other. The plug 4 is made of stainless steel. The T-shaped structure of the plug 4 allows it to be pulled out only from the front side of the slot 3, facilitating the extension and retraction of the spring 9. A bolt 5 is threaded inside the mounting frame 1 and threadedly connected to the plug 4. A telescopic component is provided at the bottom of the plug 4, and a connecting plate 8 is provided at the bottom of the plug 4 through the telescopic component. A spring 9 is attached to the top of the connecting plate 8, an adjustment component is provided at the bottom of the connecting plate 8, and a mounting plate 12 is provided at the bottom of the connecting plate 8 through the adjustment component. A connecting bracket 14 is fixedly installed on the rear side of plate 12. The connecting bracket 14 has a through mounting hole 15. When the spring 9 of this follower roller chain tensioning device is damaged, the bolt 5 is removed from the insert block 4 and the mounting bracket 1. Then the mounting bracket 1 is moved backward, so that the slot 3 is separated from the insert block 4. The mounting bracket 1 is then removed, and the spring 9 is removed. Then a new spring 9 is fitted onto the telescopic component, so that the slot 3 is aligned with the insert block 4. The mounting bracket 1 is moved forward, so that the insert block 4 is in the appropriate position in the slot 3. Then the bolt 5 is installed into the mounting bracket 1 and the insert block 4, and the spring 9 can be replaced. The spring 9 can be replaced separately, avoiding the situation where the entire tensioning device is scrapped due to the damage of the spring 9, which significantly reduces the equipment maintenance cost.

[0018] according to Figure 2 and Figure 3As shown, the telescopic assembly includes a telescopic rod 6 fixedly installed at the bottom of the insert block 4. A telescopic sleeve 7 is slidably connected to the surface of the telescopic rod 6. The telescopic sleeve 7 is fixedly connected to the connecting plate 8. The telescopic rod 6 can move telescopically in the telescopic sleeve 7. The spring 9 is located outside the telescopic rod 6 and the telescopic sleeve 7, which can prevent the spring 9 from bending severely during compression, thus facilitating a more stable tensioning function for the roller chain in the future.

[0019] according to Figure 1 As shown, the adjusting assembly includes a threaded rod 10 rotatably connected inside the connecting plate 8. The threaded rod 10 is threadedly connected to the mounting plate 12. A turntable 11 is fixedly installed at the bottom of the threaded rod 10. A guide rod 13 is fixedly installed at the bottom of the connecting plate 8. There are multiple guide rods 13, which are symmetrically distributed. The guide rods 13 are slidably connected to the mounting plate 12. The guide rods 13 facilitate the vertical movement of the connecting plate 8. The threaded rod 10 and the turntable 11 facilitate the vertical movement of the connecting plate 8, thereby facilitating the adjustment of the height of the upper tension wheel 2. This ensures that after the tensioning device is installed, the tension wheel 2 can make close contact with the roller chain, thus facilitating better tensioning of the roller chain by the subsequent tensioning device.

[0020] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be any conventional known device, such as a computer, that can control the operation of the electrical components mentioned in the article.

[0021] In use: The connecting frame 14 can be fixed to a suitable position on the oil drilling rig using screws through the mounting holes 15. Then, by rotating the turntable 11, the threaded rod 10 rotates, causing the connecting plate 8 to move upward through the guide rod 13. This causes the telescopic sleeve 7, telescopic rod 6, mounting frame 1, and tension wheel 2 to move upward, making the tension wheel 2 in close contact with the roller chain until the spring 9 is compressed. During the movement of the roller chain, the elastic force of the spring 9 allows the mounting frame 1, tension wheel 2, and telescopic rod 6 to move up and down along the telescopic sleeve 7, causing the tension wheel 2 to... The roller chain is continuously compressed, keeping it under constant tension. When spring 9 needs to be replaced, remove bolt 5 from insert block 4 and mounting bracket 1. Then move mounting bracket 1 backward to separate slot 3 from insert block 4. Remove mounting bracket 1 and then remove spring 9. Place the new spring 9 onto telescopic rod 6 and telescopic sleeve 7, aligning slot 3 with insert block 4. Move mounting bracket 1 forward to position insert block 4 in the appropriate position within slot 3. Finally, install bolt 5 into mounting bracket 1 and insert block 4 to complete the replacement of spring 9.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A follower-type roller chain tensioning device, comprising a mounting frame (1), characterized in that, The mounting bracket (1) is rotatably connected to a tension wheel (2). The mounting bracket (1) has a slot (3) on its front side. A plug (4) is inserted into the slot (3). The mounting bracket (1) is threaded with a bolt (5). The bolt (5) is threadedly connected to the plug (4). The plug (4) has a telescopic component at its bottom. The plug (4) has a connecting plate (8) at its bottom via the telescopic component. The connecting plate (8) has a spring (9) at its top. The connecting plate (8) has an adjustment component at its bottom. The connecting plate (8) has a mounting plate (12) at its bottom via the adjustment component.

2. The follower-type roller chain tensioning device according to claim 1, characterized in that, The telescopic assembly includes a telescopic rod (6) fixedly installed at the bottom of the insert (4), and a telescopic sleeve (7) is slidably connected to the surface of the telescopic rod (6). The telescopic sleeve (7) is fixedly connected to the connecting plate (8).

3. The follower-type roller chain tensioning device according to claim 1, characterized in that, The adjustment assembly includes a threaded rod (10) rotatably connected inside the connecting plate (8), the threaded rod (10) being threadedly connected to the mounting plate (12), and a turntable (11) being fixedly installed at the bottom end of the threaded rod (10).

4. The follower-type roller chain tensioning device according to claim 1, characterized in that, A guide rod (13) is fixedly installed at the bottom of the connecting plate (8), and the guide rod (13) is slidably connected to the mounting plate (12).

5. The follower-type roller chain tensioning device according to claim 1, characterized in that, A connecting bracket (14) is fixedly installed on the rear side of the mounting plate (12), and a mounting hole (15) is provided through the inside of the connecting bracket (14).

6. The follower-type roller chain tensioning device according to claim 1, characterized in that, The plug (4) has a T-shaped structure, the slot (3) is adapted to the plug (4), and the plug (4) is made of stainless steel.

7. A follower-type roller chain tensioning device according to claim 4, characterized in that, The number of guide rods (13) is multiple, and the multiple guide rods (13) are symmetrically distributed.

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