Chain tensioning device for chain transmission mechanism

Abstract

The invention provides a chain tensioning device for a chain transmission mechanism. The chain tensioning device comprises a mounting plate; the fixing frame is fixedly mounted on the front surface of the mounting plate, and a mounting cavity is formed in the fixing frame; and the cover plate is in threaded connection with one end of the inner side face of the mounting cavity, a threaded ring is fixedly mounted in the cover plate, a threaded rod is in threaded connection with the interior of the threaded ring, and a rotating handle is fixedly mounted at one end of the threaded rod. According to the chain tensioning device for the chain transmission mechanism, the fixing frame, the mounting cavity, the cover plate, a threaded ring, a rotating plate, a threaded rod, a rotating handle, a pushing plate, a spring, a moving rod, a chain wheel and other structures are matched with one another, and after long-time use, a user only needs to rotate the rotating plate, so that the chain tensioning device is convenient to use; the cover plate is driven to move out of the inner side face of the mounting cavity, then the spring can be detached and replaced, operation is convenient and fast, and the replacement efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chain tensioning, and in particular to a chain tensioning device for a chain transmission mechanism. Background Art

[0002] Chains are generally metal links or rings, mostly used for mechanical transmission and traction. They are chain-shaped objects used to block traffic passages (such as in streets, rivers or harbor entrances). Chains used for mechanical transmission. Tensioners are commonly used retaining devices on belt and chain transmission systems. Their characteristics are to keep the belts and chains with appropriate tension during the transmission process, thereby avoiding belt slippage or tooth skipping or de-toothing of the synchronous belt. During use, the chain will wear due to high temperature, operating load, etc. The chain pitch will gradually increase due to wear, and the chain will gradually lengthen.

[0003] For example, a chain tensioning device in the prior art is connected to a working shell through the front of a mounting plate, and four sets of fixed plates are symmetrically connected to the upper and lower parts of the working shell, and a No. 1 threaded rod is connected to the inside of the fixed plate, and a No. 1 spring is connected to the inside of the working shell, and one end of the No. 1 spring is connected to a telescopic frame. The present invention is installed with a No. 1 spring, and is engaged with the connecting chain through a coupling gear. The elastic potential energy of the No. 1 spring is movable through one side of the working shell through the telescopic frame, and the No. 1 spring and the lubricating cylinder are connected through the telescopic frame, so that the connecting chain can be automatically adjusted according to the elastic potential energy of the No. 1 spring. Manual adjustment is not required, and the connecting chain can be always in a taut state, so as to prevent the connecting chain from being worn due to heat, the chain pitch gradually increases, and the occurrence of tooth skipping or tooth disengagement.

[0004] However, after the tensioning device has been used for a long time, the elasticity of the spring decreases. Since the spring is arranged inside the working shell, it is inconvenient for the user to replace the spring, thereby reducing the replacement efficiency.

[0005] Therefore, it is necessary to provide a chain tensioning device for a chain transmission mechanism to solve the above technical problems. Summary of the invention

[0006] The invention provides a chain tensioning device for a chain transmission mechanism, which solves the problem that it is inconvenient for a user to replace a spring, thereby reducing the replacement efficiency.

[0007] In order to solve the above technical problems, the present invention provides a chain tensioning device for a chain transmission mechanism, comprising:

[0008] Mounting plate;

[0009] A fixing frame, the fixing frame is fixedly mounted on the front side of the mounting plate, and a mounting cavity is provided inside the fixing frame;

[0010] A cover plate, the cover plate being threadedly connected to one end of the inner side surface of the installation cavity, a threaded ring being fixedly installed inside the cover plate, a threaded rod being threadedly connected inside the threaded ring, a rotating handle being fixedly installed at one end of the threaded rod, and a pushing plate being rotatably connected to the other end of the threaded rod;

[0011] A moving rod is slidably connected to the inner side surface of the installation cavity, and a sprocket is arranged on the inner side surface of one end of the moving rod.

[0012] Preferably, the top and bottom of the inner side surface of the installation cavity are provided with sliding grooves, and the other ends of the top and bottom of the moving rod are fixedly installed with sliding blocks, and the sliding blocks are slidably connected to the inner side surface of the sliding grooves.

[0013] Preferably, two rotating plates are fixedly mounted on one side of the cover plate, and the two rotating plates are respectively arranged on both sides of the threaded ring.

[0014] Preferably, one end of the spring is arranged on one side of the pushing plate, and the other end of the spring is arranged on the other end of the moving rod.

[0015] Preferably, one end of both sides of the moving rod is provided with a mounting groove, the inner side surface of the mounting groove is provided with a rotating shaft, and the rotating shaft is rotatably connected to the inside of the sprocket.

[0016] Preferably, baffles are fixedly mounted on both ends of the outer side surface of the rotating shaft, and nuts are threadedly connected on both ends of the outer side surface of the rotating shaft.

[0017] Preferably, the nut is arranged on the outer side surface of the moving rod, and the baffle is arranged on the inner side surface of the moving rod.

[0018] Compared with the related art, the chain tensioning device for a chain transmission mechanism provided by the present invention has the following beneficial effects:

[0019] The present invention provides a chain tensioning device for a chain transmission mechanism, which cooperates with each other through structures such as a fixed frame, an installation cavity, a cover plate, a threaded ring, a rotating plate, a threaded rod, a rotating handle, a pushing plate, a spring, a moving rod and a sprocket. After long-term use, the user only needs to rotate the rotating plate to drive the cover plate to move out from the inner side of the installation cavity to disassemble and replace the spring. The operation is convenient and quick, and the replacement efficiency is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a first embodiment of a chain tensioning device for a chain transmission mechanism provided by the present invention;

[0021] Figure 2 for Figure 1Another perspective structural schematic diagram shown;

[0022] Figure 3 for Figure 1 The schematic diagram of the cross-sectional structure of the fixed frame shown;

[0023] Figure 4 A schematic structural diagram of a second embodiment of a chain tensioning device for a chain transmission mechanism provided by the present invention;

[0024] Figure 5 for Figure 4 An enlarged schematic diagram of part A is shown.

[0025] Numbers in the figure: 1, mounting plate, 2, fixing frame, 21, mounting cavity, 22, slide groove, 3, cover plate, 31, threaded ring, 32, rotating plate, 33, threaded rod, 34, turning handle, 35, pushing plate, 4, spring, 5, moving rod, 51, slider, 52, sprocket, 6, mounting groove, 61, rotating shaft, 62, baffle, 63, nut. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0027] First embodiment

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic structural diagram of a first embodiment of a chain tensioning device for a chain transmission mechanism provided by the present invention; Figure 2 for Figure 1 Another perspective structural schematic diagram shown; Figure 3 for Figure 1 The cross-sectional structure diagram of the fixing frame is shown. A chain tensioning device for a chain transmission mechanism comprises: a mounting plate 1;

[0029] A fixing frame 2, wherein the fixing frame 2 is fixedly mounted on the front side of the mounting plate 1, and a mounting cavity 21 is provided inside the fixing frame 2;

[0030] A cover plate 3, wherein the cover plate 3 is threadedly connected to one end of the inner side surface of the installation cavity 21, a threaded ring 31 is fixedly installed inside the cover plate 3, a threaded rod 33 is threadedly connected inside the threaded ring 31, a rotating handle 34 is fixedly installed at one end of the threaded rod 33, and a push plate 35 is rotatably connected to the other end of the threaded rod 33;

[0031] The moving rod 5 is slidably connected to the inner side surface of the installation cavity 21 , and a sprocket 52 is provided on the inner side surface of one end of the moving rod 5 .

[0032] The top and bottom of the inner side of the installation cavity 21 are both provided with a slide groove 22 , and the other ends of the top and bottom of the moving rod 5 are fixedly installed with a slider 51 , and the slider 51 is slidably connected to the inner side of the slide groove 22 .

[0033] The slider 51 slides on the inner side of the slide groove 22 , so that when in use, the movable rod 5 can be limited to prevent the movable rod 5 from rotating.

[0034] Two rotating plates 32 are fixedly mounted on one side of the cover plate 3 , and the two rotating plates 32 are respectively arranged on two sides of the threaded ring 31 .

[0035] The provision of the rotating plate 32 makes it convenient for the user to rotate the cover plate 3 during use.

[0036] One end of the spring 4 is disposed on one side of the pushing plate 35 , and the other end of the spring 4 is disposed on the other end of the moving rod 5 .

[0037] The working principle of a chain tensioning device for a chain transmission mechanism provided by the present invention is as follows:

[0038] After long-term use, when the elasticity of the spring 4 decreases, the user can rotate the handle 34 so that the handle 34 drives the threaded rod 33 to be threadedly connected inside the thread ring 31, so that one end of the threaded rod 33 drives the push plate 35 to squeeze the spring 4, thereby increasing the elasticity of the spring 4;

[0039] When the spring 4 needs to be replaced, the user can rotate the cover plate 3 to make the cover plate 3 threadedly connected to the inner side of the installation cavity 21, thereby disassembling the cover plate 3, and then the spring 4 can be taken out and replaced, which is convenient and quick to operate.

[0040] Compared with the related art, the chain tensioning device for a chain transmission mechanism provided by the present invention has the following beneficial effects:

[0041] Through the cooperation of structures such as the fixed frame 2, the installation cavity 21, the cover plate 3, the threaded ring 31, the rotating plate 32, the threaded rod 33, the rotating handle 34, the pushing plate 35, the spring 4, the moving rod 5 and the sprocket 52, after long-term use, the user only needs to rotate the rotating plate 32 to drive the cover plate 3 to move out from the inner side of the installation cavity 21 to disassemble and replace the spring 4. The operation is convenient and quick, which increases the replacement efficiency.

[0042] Second embodiment

[0043] Please refer to Figure 4 and Figure 5Based on the chain tensioning device for a chain transmission mechanism provided in the first embodiment of the present application, the second embodiment of the present application proposes another chain tensioning device for a chain transmission mechanism. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0044] Specifically, the difference of the chain tensioning device for a chain transmission mechanism provided in the second embodiment of the present application is that, in a chain tensioning device for a chain transmission mechanism, an installation groove 6 is provided at one end on both sides of the movable rod 5, and a rotating shaft 61 is provided on the inner side surface of the installation groove 6, and the rotating shaft 61 is rotatably connected to the inside of the sprocket 52.

[0045] Baffles 62 are fixedly mounted on both ends of the outer side of the rotating shaft 61 , and nuts 63 are threadedly connected on both ends of the outer side of the rotating shaft 61 .

[0046] The nut 63 is disposed on the outer side of the moving rod 5 , and the baffle 62 is disposed on the inner side of the moving rod 5 .

[0047] The working principle of a chain tensioning device for a chain transmission mechanism provided by the present invention is as follows:

[0048] When in use, when the sprocket 52 needs to be installed, the user only needs to put the rotating shaft 61 into the inner side of the installation groove 6, and then thread the two nuts 63 to the two ends of the outer side of the rotating shaft 61 respectively, and then make one side of the nut 63 fit against the side of the moving rod 5, so as to play the role of installing the sprocket 52.

[0049] Compared with the related art, the chain tensioning device for a chain transmission mechanism provided by the present invention has the following beneficial effects:

[0050] By means of the cooperation of the mounting groove 6, the rotating shaft 61, the baffle plate 62 and the nut 63, when in use, the rotating shaft 61 is stuck in the inner side of the mounting groove 6, and the nut 63 is threadedly connected to the outer side of the rotating shaft 61, so that the sprocket 52 can be installed, and the operation is convenient and quick.

[0051] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A chain tensioning device for a chain transmission mechanism, characterized in that: include: Mounting plate; A fixing frame, the fixing frame is fixedly mounted on the front side of the mounting plate, and a mounting cavity is provided inside the fixing frame; A cover plate, the cover plate being threadedly connected to one end of the inner side surface of the installation cavity, a threaded ring being fixedly installed inside the cover plate, a threaded rod being threadedly connected inside the threaded ring, a rotating handle being fixedly installed at one end of the threaded rod, and a pushing plate being rotatably connected to the other end of the threaded rod; A moving rod is slidably connected to the inner side surface of the installation cavity, and a sprocket is arranged on the inner side surface of one end of the moving rod.

2. A chain tensioning device for a chain transmission mechanism according to claim 1, characterized in that: The top and bottom of the inner side of the installation cavity are both provided with sliding grooves, and the other ends of the top and bottom of the moving rod are both fixedly installed with sliding blocks, and the sliding blocks are slidably connected to the inner side of the sliding grooves.

3. A chain tensioning device for a chain transmission mechanism according to claim 1, characterized in that: Two rotating plates are fixedly mounted on one side of the cover plate, and the two rotating plates are respectively arranged on both sides of the threaded ring.

4. A chain tensioning device for a chain transmission mechanism according to claim 1, characterized in that: One end of the spring is arranged on one side of the pushing plate, and the other end of the spring is arranged on the other end of the moving rod.

5. A chain tensioning device for a chain transmission mechanism according to claim 1, characterized in that: One end of both sides of the moving rod is provided with a mounting groove, the inner side surface of the mounting groove is provided with a rotating shaft, and the rotating shaft is rotatably connected to the inside of the sprocket.

6. A chain tensioning device for a chain transmission mechanism according to claim 5, characterized in that: Baffles are fixedly installed at both ends of the outer side surface of the rotating shaft, and nuts are threadedly connected at both ends of the outer side surface of the rotating shaft.

7. A chain tensioning device for a chain transmission mechanism according to claim 6, characterized in that: The nut is arranged on the outer side surface of the moving rod, and the baffle is arranged on the inner side surface of the moving rod.

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