Chain tensioning mechanism

Abstract

The utility model discloses a chain tensioning mechanism which comprises a first tensioning assembly and a second tensioning assembly, the first tensioning assembly and the second tensioning assembly are the same in structure, each of the first tensioning assembly and the second tensioning assembly comprises a fixing base and a tensioning elastic piece, the fixing bases are fixed to a support, and through holes are formed in the fixing bases; the tensioning elastic piece is arranged between the fixing base and the blocking piece, and the chain penetrates through the through hole of the fixing base and the tensioning elastic piece and is fixed to the blocking piece through the locking nut; therefore, the elastic part is arranged at the end part of the chain, so that the stretching amount of the chain is automatically compensated by utilizing the pre-tightening force of the elastic part, the structure is simple, and the effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission, and particularly relates to a chain tensioning mechanism. Background Art

[0002] In the related art, as a common power transmission mechanism, a chain is often used for lifting and transporting articles. During use, the pitch of the chain gradually increases due to wear, resulting in the gradual elongation of the chain. Currently, when the chain becomes loose, a chain tensioning mechanism is usually used to adjust the tension of the chain. The existing chain tensioning mechanism generally adjusts the tensioning wheel manually by a screw rod, which not only has a complex structure but also a poor adjustment effect. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems in the above technologies to some extent. For this reason, an object of the utility model is to propose a chain tensioning mechanism, by arranging an elastic member at the end of the chain, so as to automatically compensate for the elongation of the chain by using the pre-tightening force of the elastic member, which not only has a simple structure but also a good effect.

[0004] To achieve the above object, a chain tensioning mechanism proposed by the utility model includes a first tensioning assembly and a second tensioning assembly. The structures of the first tensioning assembly and the second tensioning assembly are the same. Among them, both the first tensioning assembly and the second tensioning assembly include: a fixed seat, the fixed seat is fixed on the bracket, and a through hole is arranged on the fixed seat; a tensioning elastic member, the tensioning elastic member is arranged between the fixed seat and the retaining piece, the chain passes through the through hole of the fixed seat and the tensioning elastic member, and is fixed on the retaining piece by a locking nut.

[0005] According to the chain tensioning mechanism proposed by the utility model, it includes a first tensioning assembly and a second tensioning assembly. The structures of the first tensioning assembly and the second tensioning assembly are the same. Among them, both the first tensioning assembly and the second tensioning assembly include a fixed seat and a tensioning elastic member. The fixed seat is fixed on the bracket, and a through hole is arranged on the fixed seat; the tensioning elastic member is arranged between the fixed seat and the retaining piece, the chain passes through the through hole of the fixed seat and the tensioning elastic member, and is fixed on the retaining piece by a locking nut. Thus, by arranging an elastic member at the end of the chain, so as to automatically compensate for the elongation of the chain by using the pre-tightening force of the elastic member, which not only has a simple structure but also a good effect.

[0006] In addition, the chain tensioning mechanism proposed by the utility model as above may further have the following additional technical features:

[0007] Optionally, the bracket includes a support frame and a back plate, the support frame is arranged opposite to the back plate, and the fixed seat is fixed on the back plate.

[0008] Optionally, a first mounting seat is provided at one end of the support frame, and a second mounting seat is provided at the other end. The chain is sleeved between the mounting wheels with the same axial position on the first mounting seat and the second mounting seat.

[0009] Optionally, one end of the chain is connected to the first tensioning assembly, and the other end of the chain is connected to the second tensioning assembly.

[0010] Optionally, a gear is further provided on the chain, and the gear can move on the chain under the drive of a driving member.

[0011] Optionally, the driving member is a motor.

[0012] Optionally, the tensioning elastic member is a spring. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a chain tensioning mechanism according to an embodiment of the present invention;

[0014] Figure 2 It is Figure 1 An enlarged schematic view of part A of the chain tensioning mechanism of

[0015] Description of the Reference Numerals:

[0016] The first tensioning assembly 1, the second tensioning assembly 2;

[0017] The fixed seat 31, the bracket 32, the tensioning elastic member 33, the retaining piece 34, the locking nut 35;

[0018] The support frame 41, the back plate 42, the first mounting seat 411, the second mounting seat 412;

[0019] The chain 5;

[0020] The gear 6;

[0021] The driving member 7. Detailed Embodiment

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0023] To better understand the above technical solution, the exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present utility model and to fully convey the scope of the present utility model to those skilled in the art.

[0024] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0025] As Figure 1-2 shown, the chain tensioning mechanism proposed in the embodiment of the present utility model includes a first tensioning assembly 1 and a second tensioning assembly 2. Among them, both the first tensioning assembly 1 and the second tensioning assembly 2 include a fixed seat 31 and a tensioning elastic member 33.

[0026] The fixed seat 31 is fixed on the bracket 32, and a through hole is provided on the fixed seat 31; the tensioning elastic member 33 is arranged between the fixed seat 31 and the retaining piece 34. The chain 5 passes through the through hole of the fixed seat 31 and the tensioning elastic member 33 and is fixed on the retaining piece 34 by a lock nut 35.

[0027] As an embodiment, the tensioning elastic member 33 is a spring.

[0028] That is to say, the fixed seat 31 is fixed relative to the bracket 32, and after the spring is installed, it is compressed to the minimum length by the retaining piece 34 and the lock nut 35; when the chain 5 becomes longer due to long-term use, the elongation of the chain 5 can be automatically compensated by the pre-tightening force of the spring. At this time, the spring resumes its elongation, causing the lock nut 35 to stretch the chain 5 for compensation.

[0029] As an embodiment, the bracket 32 includes a support frame 41 and a back plate 42. The support frame 41 and the back plate 42 are arranged opposite to each other, and the fixed seat 31 is fixed on the back plate 42.

[0030] As an embodiment, one end of the support frame 41 is provided with a first mounting seat 411, and the other end is provided with a second mounting seat 412. A chain 5 is sleeved between the mounting wheels with the same axial position of the first mounting seat 411 and the second mounting seat 412.

[0031] As an embodiment, one end of the chain 5 is connected to the first tensioning assembly 1, and the other end of the chain 5 is connected to the second tensioning assembly 2.

[0032] That is to say, the chain 5 is arranged on the support frame 41 through the first mounting seat 411 and the second mounting seat 412, and a back plate 42 is arranged at a position relative to the support frame 41, so that one end of the chain 5 is fixed on the back plate 42 through the fixed seat 31 of the first tensioning assembly 1, and the other end is also fixed on the back plate 42 through the fixed seat 31 of the second tensioning assembly 2, thereby realizing the tension control of the chain 5.

[0033] According to the actual application requirements, both the first tensioning assembly 1 and the second tensioning assembly 2 can be set to multiple, and the present application does not make specific limitations on this.

[0034] As an embodiment, a gear 6 is further arranged on the chain 5, and the gear 6 can move on the chain 5 under the drive of a driving member 7.

[0035] As an embodiment, the driving member 7 is a motor.

[0036] In summary, according to the chain tensioning mechanism proposed by the present utility model, it includes a first tensioning assembly and a second tensioning assembly. The structures of the first tensioning assembly and the second tensioning assembly are the same. Among them, both the first tensioning assembly and the second tensioning assembly include a fixed seat and a tensioning elastic member. The fixed seat is fixed on the bracket, and a through hole is arranged on the fixed seat; the tensioning elastic member is arranged between the fixed seat and the retaining piece. The chain passes through the through hole of the fixed seat and the tensioning elastic member, and is fixed on the retaining piece through a locking nut; thus, by arranging an elastic member at the end of the chain, the pre-tightening force of the elastic member is used to automatically compensate for the elongation amount of the chain, which is not only simple in structure but also good in effect.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0039] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0041] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0042] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A chain tensioning mechanism, characterized in that: The invention comprises a first tensioning assembly and a second tensioning assembly, wherein the first tensioning assembly and the second tensioning assembly have the same structure, wherein the first tensioning assembly and the second tensioning assembly both comprise: A fixing seat, the fixing seat is fixed on the bracket and is provided with a through hole; A tensioning elastic member is arranged between the fixing seat and the baffle. The chain passes through the through hole of the fixing seat and the tensioning elastic member and is fixed to the baffle by a locking nut.

2. The chain tensioning mechanism according to claim 1, characterized in that: The bracket comprises a supporting frame and a back plate, wherein the supporting frame is arranged opposite to the back plate, and the fixing seat is fixed on the back plate.

3. The chain tensioning mechanism according to claim 2, characterized in that: A first mounting seat is disposed at one end of the support frame, and a second mounting seat is disposed at the other end. The chain is sleeved between mounting wheels of the first mounting seat and the second mounting seat at the same axial position.

4. The chain tensioning mechanism according to claim 3, characterized in that: One end of the chain is connected to the first tensioning assembly, and the other end of the chain is connected to the second tensioning assembly.

5. The chain tensioning mechanism according to claim 4, characterized in that: The chain is also provided with a gear, and the gear can move on the chain under the drive of the driving member.

6. The chain tensioning mechanism according to claim 5, characterized in that: The driving member is a motor.

7. The chain tensioning mechanism according to any one of claims 1 to 6, characterized in that: The tensioning elastic member is a spring.

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