Self-adaptive roller chain tensioning device

Abstract

The utility model provides a self-adaptive roller chain tensioning device which comprises a tensioning wheel and a locating piece, the outer side wall of the tensioning wheel abuts against a roller chain, the tensioning wheel is rotationally connected to one end of a connecting rod through a rolling shaft, the other end of the connecting rod is fixedly connected with a driven wheel, and the driven wheel is arranged in the locating piece. A driving rod corresponding to the driven wheel is arranged in the positioning piece, and the driving rod is fixedly connected with the driving assembly; a tooth groove is formed in the outer wall of the driven wheel, a rack is fixedly arranged on the end face, close to the driven wheel, of the driving rod, and the rack is meshed with the tooth groove. The automatic tensioning device has the advantages that pre-tightening force is applied to the driving rod through the driving assembly, the driving rod drives the driven wheel to rotate under the condition allowed, then the tensioning wheel is made to move, the automatic tensioning function is achieved, meanwhile, one-way rotation limitation on the driven wheel is completed through the ratchets on the driven wheel and the positioning disc in the positioning piece, and the tensioning effect is improved. And the working state of the tensioning wheel is stabilized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to automatic tensioner field, especially is involved in adaptive roller chain tensioner. BACKGROUND

[0002] Steel is a kind of widely used material. In industry, agriculture, transportation, construction, national defense and other departments, the role of steel material is extremely important. The production level of steel is an important symbol to measure the modernization level of a country. With the continuous development of steel industry, more and more industries are constantly refined, various kinds of machinery are constantly improved and upgraded, and people put forward higher requirements on the production efficiency of the industry. Today, how to improve the rolling quality, reduce the cost and improve the production capacity in each rolling link is the most important for each steel production enterprise and rolling equipment manufacturing enterprise.

[0003] The marshalling gantry is arranged in the marshalling area, and the equipment is between the marshalling gantry input roller and the marshalling gantry output roller. The collection gantry is arranged in the collection area, and the equipment is after the collection roller. They often transport the rolled piece through the combination of transmission device, gantry, roller chain and sprocket. After the equipment is used for a period of time, the roller chain is prone to deformation, resulting in elongation of the chain, so that the transmission efficiency is reduced. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing adaptive roller chain tensioner to solve at least one of the above technical problems.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] The adaptive roller chain tensioner comprises:

[0007] The tensioning wheel is connected to one end of the connecting rod through the roller shaft, and the other end of the connecting rod is fixedly connected with the driven wheel, and the driven wheel is arranged in the positioning member.

[0008] The positioning member is provided with a driving rod corresponding to the driven wheel in the positioning member, and the driving rod is fixedly connected with the driving assembly. The outer wall of the driven wheel is provided with a gear groove, and the end face of the driving rod is fixedly provided with a rack, and the rack and the gear groove are engaged with each other.

[0009] Further, one end face of the driven wheel is fixedly provided with a ratchet, and the positioning member is provided with a positioning disc, and the positioning disc is provided with a ratchet groove corresponding to the ratchet, and the ratchet is located in the ratchet groove.

[0010] Further, the driven wheel is rotatably connected to the positioning member through a rotating shaft, an axis of the rotating shaft coincides with an axis of the driven wheel, and the positioning disc is provided with a rotating hole corresponding to the rotating shaft.

[0011] Further, the positioning disc is provided with a guide column on an end surface away from the driven wheel, the positioning member is provided with a guide hole corresponding to the guide column, and the guide column is located inside the guide hole.

[0012] Further, the positioning disc is provided with a supporting spring on an end surface away from the driven wheel, the positioning member is provided with a placing groove corresponding to the supporting spring, the supporting spring is located inside the placing groove, and two ends of the supporting spring are fixedly connected to the positioning disc and the positioning member respectively.

[0013] Further, the positioning member is provided with a sliding groove, the driving rod is located inside the sliding groove, the driving assembly is arranged at a bottom of the sliding groove, the bottom surface of the sliding groove is provided with a threaded hole, and a pre-tightening bolt of the driving assembly is threadedly connected to the threaded hole.

[0014] Further, the driving assembly comprises:

[0015] a compression spring fixedly connected to the driving rod;

[0016] a top block fixedly connected to the compression spring on an end surface close to the driving rod, and provided with a rotating groove on another end surface;

[0017] a pre-tightening bolt provided with a rotating block corresponding to the rotating groove at one end, the rotating block being located inside the rotating groove and abutting against the top block.

[0018] Further, the inner wall of the sliding groove is provided with a positioning groove, and the side wall of the driving rod is provided with a positioning block corresponding to the positioning groove, the positioning block being located inside the positioning groove.

[0019] Compared with the prior art, the self-adaptive roller chain tensioning device has the following beneficial effects:

[0020] The driving assembly applies a pre-tightening force to the driving rod, so that the driving rod drives the driven wheel to rotate under the condition of permission, and then drives the tensioning wheel to move, thereby realizing the automatic tensioning function, and the one-way rotation limitation of the driven wheel is realized through the ratchet on the driven wheel and the positioning disc in the positioning member, and the working state of the tensioning wheel is stabilized. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the accompanying drawings. In the drawings:

[0022] Figure 1 The automatic tensioning device overall structure schematic view is described in the embodiment of the utility model;

[0023] Figure 2 The automatic tensioning device internal structure schematic view is described in the embodiment of the utility model;

[0024] Figure 3 The positioning piece internal structure schematic view is described in the embodiment of the utility model;

[0025] Figure 4 The driven wheel structure schematic view is described in the embodiment of the utility model;

[0026] Figure 5 The positioning disc structure schematic view is described in the embodiment of the utility model.

[0027] Mark explanation:

[0028] 1, tensioning wheel;2, positioning piece;201, drive rod;202, guide hole;203, sliding groove;204, threaded hole;205, pre-tightening bolt;206, top block;207, compression spring;208, placing groove;3, connecting rod;4, driven wheel;5, positioning disc;501, guide column. Specific implementation

[0029] It should be noted that, in the case of no conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0030] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0031] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

[0032] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0033] Self-adapting roller chain tensioning device, comprising:

[0034] Tensioning wheel 1, the outer side wall of tensioning wheel 1 is pressed against roller chain, tensioning wheel 1 is rotatably connected to one end of connecting rod 3 by roller shaft, the other end of connecting rod 3 is fixedly connected with driven wheel 4, and driven wheel 4 is arranged in positioning member 2;

[0035] Positioning member 2, drive rod 201 corresponding with driven wheel 4 is arranged in positioning member 2, drive rod 201 is fixedly connected with drive assembly;The outer wall of driven wheel 4 is provided with a tooth groove, and the end face of drive rod 201 close to driven wheel 4 is fixedly provided with a rack, and the rack is engaged with the tooth groove.

[0036] One end surface of driven wheel 4 is fixedly provided with a ratchet, positioning disc 5 is arranged in positioning member 2, the ratchet groove corresponding with the ratchet is formed in positioning disc 5, and the ratchet is located in the ratchet groove.

[0037] The pre-tightening force is applied to drive rod 201 by drive assembly, so that drive rod 201 drives driven wheel 4 to rotate under the condition of allowing, and then makes tensioning wheel 1 move, thereby realizing automatic tensioning function, simultaneously, the one-way rotation of driven wheel 4 is limited by the ratchet on driven wheel 4 and positioning disc 5 in positioning member 2, and the working state of tensioning wheel 1 is stabilized.

[0038] Driven wheel 4 is rotatably connected in positioning member 2 by rotating shaft, the axis of rotating shaft coincides with the axial direction of driven wheel 4, rotating hole corresponding with rotating shaft is formed in positioning disc 5, and rotating shaft penetrates rotating hole, so that the position of positioning disc 5 is preliminarily limited.

[0039] The end surface of positioning disc 5 away from driven wheel 4 is fixedly provided with guide column 501, and guide hole 202 corresponding with guide column 501 is formed in positioning member 2, guide column 501 is located in the inside of guide hole 202, guide column 501 is provided with a plurality of, and the plurality of guide columns 501 are uniformly distributed around rotating shaft, so that the movement track of positioning disc 5 is further limited.

[0040] The positioning disc 5 is provided with a supporting spring away from the end face of the driven wheel 4, the positioning member 2 is provided with a placing groove 208 corresponding to the supporting spring, the supporting spring is located in the placing groove 208, and two ends of the supporting spring are fixedly connected with the positioning disc 5 and the positioning member 2 respectively.

[0041] When the driven wheel 4 rotates, the ratchet on the driven wheel 4 moves in the setting direction of the ratchet groove, at this time, the positioning disc 5 moves away from the driven wheel 4 under the interaction of the ratchet and the ratchet groove, and under the action of the supporting spring, the positioning disc 5 rebounds and clamps the driven wheel 4, thereby preventing the driven wheel 4 from rotating reversely, and achieving the function of controlling the one-way rotation of the driven wheel 4.

[0042] The positioning member 2 is provided with a sliding groove 203, the driving rod 201 is located inside the sliding groove 203, the driving assembly is arranged at the bottom of the sliding groove 203, the bottom surface of the sliding groove 203 is provided with a threaded hole 204, and the pre-tightening bolt 205 of the driving assembly is threadedly connected in the threaded hole 204.

[0043] The driving assembly comprises:

[0044] A compression spring 207 is fixedly connected with the driving rod 201.

[0045] A top block 206 is fixedly connected with the compression spring 207 near the end face of the driving rod 201, and the other end face is provided with a rotating groove.

[0046] A pre-tightening bolt 205 is provided with a rotating block corresponding to the rotating groove at one end, the rotating block is located inside the rotating groove and abuts against the top block 206.

[0047] By adjusting the threaded connection relationship between the pre-tightening bolt 205 and the threaded hole 204, the position of the top block 206 is adjusted, the closer the top block 206 is to the driving rod 201, the greater the pre-pressing force of the compression spring 207 is, the pre-pressing force of the compression spring 207 is adjusted, and then the adjustment of the moving degree of the tensioning wheel 1 is controlled, when the roller chain is loose, the driving rod 201 moves upwards under the action of the pre-tightening force, and then the driven wheel 4 rotates downwards, the tensioning wheel 1 abuts against the roller chain, and the automatic tensioning function is completed.

[0048] The inner wall of the sliding groove 203 is provided with a positioning groove, the side wall of the driving rod 201 is fixedly provided with a positioning block corresponding to the positioning groove, and the positioning block is located inside the positioning groove.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions, which should be included in the scope of the claims and the description of the present application.

[0050] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An adaptive roller chain tensioner characterized by, The utility model relates to a kind of tensioner, comprising: Tensioner (1), the outer side wall of the tensioner (1) tightens roller chain, tensioner (1) is rotatably connected to one end of connecting rod (3) by roller, the other end of the connecting rod (3) is fixedly connected with driven wheel (4), and the driven wheel (4) is arranged in positioning member (2); Positioning member (2), the drive rod (201) corresponding with driven wheel (4) is arranged in the positioning member (2), and the drive rod (201) is fixedly connected with drive assembly;Gear slot is opened on the outer wall of the driven wheel (4), and the end face of the drive rod (201) adjacent to the driven wheel (4) is fixedly provided with rack, and the rack is engaged with gear slot.

2. The self-adapting roller chain tensioner of claim 1, wherein: One end surface of the driven wheel (4) is fixedly provided with ratchet, the positioning disc (5) is arranged in the positioning member (2), the positioning disc (5) is opened with the ratchet corresponding ratchet slot, and the ratchet is located in ratchet slot.

3. The self-adapting roller chain tensioner of claim 2, wherein: The driven wheel (4) is rotatably connected in the positioning member (2) by rotating shaft, the axis of the rotating shaft coincides with the axial direction of the driven wheel (4), and the positioning disc (5) is opened with the rotating shaft corresponding rotating hole.

4. The self-adapting roller chain tensioner of claim 2, wherein: The end surface of the positioning disc (5) away from the driven wheel (4) is fixedly provided with guide column (501), and the positioning member (2) is opened with the guide column (501) corresponding guide hole (202), and the guide column (501) is located in the inside of guide hole (202).

5. The self-adapting roller chain tensioner of claim 2, wherein: The end surface of the positioning disc (5) away from the driven wheel (4) is provided with support spring, the positioning member (2) is opened with the support spring corresponding placement groove (208), the support spring is located in the placement groove (208), and the two ends of the support spring are fixedly connected with the positioning disc (5) and the positioning member (2) respectively.

6. The self-adapting roller chain tensioner of claim 1, wherein: The positioning member (2) is opened with sliding groove (203), the drive rod (201) is located in the inside of sliding groove (203), the drive assembly is arranged in the bottom of sliding groove (203), the bottom surface of sliding groove (203) is opened with screw hole (204), and the pre-tightening bolt (205) of the drive assembly is threadedly connected in screw hole (204).

7. The self-adapting roller chain tensioner of claim 6, wherein, The utility model relates to a kind of tensioner, comprising: Compression spring (207), the compression spring (207) is fixedly connected with drive rod (201); Jacking block (206), the jacking block (206) is fixedly connected with compression spring (207) near the end face of drive rod (201), and another end face is opened with rotating groove; Pre-tightening bolt (205), one end of the pre-tightening bolt (205) is fixedly provided with rotating block corresponding with rotating groove, and the rotating block is located in the inside of rotating groove and tightens jacking block (206).

8. The self-adapting roller chain tensioner of claim 6, wherein: The inner wall of the sliding groove (203) is opened with positioning groove, the side wall of the drive rod (201) is fixedly provided with positioning block corresponding with positioning groove, and the positioning block is in the inside of positioning groove.

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