CN212225907U - Tension device - Google Patents

Abstract

The utility model provides a tensioning device, which comprises a base, a sliding frame, a pressing plate, a nut, a screw rod, a limiting part, a pressing block and a driving rod, wherein a sliding groove is arranged in the base; the sliding frame comprises an installation part and a sliding part, and the sliding part is slidably arranged in the sliding groove; the screw nut is fixedly arranged on the sliding part; the screw rod is rotatably arranged on the base and is in threaded connection with the nut; the limiting piece is positioned in the clamping groove of the base to limit the axial direction of the screw rod; the pressing block is used for limiting the limiting piece in the clamping groove; the driving rod is used for rotating the screw rod. Adopt this scheme, when needs tensioning chain, make the lead screw rotate through rotating the actuating lever, the rotation of lead screw can drive screw and sliding part and remove in the spout to can drive the sprocket on the installation department and remove, realize tensioning chain's purpose. The arrangement of the components ensures that the tensioning device has stable and reliable structure, accurate transmission and convenient operation, thereby ensuring the long-term reliable operation of chain transmission.

Description

Tension device

Technical Field

The utility model relates to a chain tensioning technical field particularly, relates to a tensioning device.

Background

The chain transmission has the advantages of wide application, visible application in production and life, no slipping phenomenon, accurate average transmission ratio, high transmission efficiency, large transmission power and strong overload capacity, and can work in severe environments such as high temperature, humidity, dustiness, pollution and the like.

However, after the chain transmission device runs for a period of time, the chain abrasion phenomenon inevitably occurs, so that the chain links become long and the chain is loose. If the slack side chain cannot be tensioned in time, tooth jumping or chain dropping can be caused, so that the faults of the chain wheel transmission device are increased, and the production efficiency is influenced.

It is therefore desirable to use a chain tensioner whereby the chain can be tensioned when the chain is slack during use, so that the chain drive is always in normal operation. However, the existing tensioning device has a simple structure and poor reliability, and influences the long-term reliable operation of chain transmission.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tensioning device to improve current tensioning device's reliability, guarantee the long-term reliable operation of chain drive.

In order to achieve the above object, the present invention provides a tensioning device, including: the base is fixedly arranged, a sliding groove is formed in the base, and the radial section of the sliding groove is rectangular; the sliding frame comprises an installation part and a sliding part, the installation part is connected with the sliding part, the installation part is used for installing a chain wheel, the sliding part is slidably arranged in the sliding groove, the shape of the sliding part is matched with that of the sliding groove, and the sliding part is of a hollow structure; the pressing plate is detachably arranged on the base and used for pressing the sliding part in the sliding groove; the nut is fixedly arranged on the sliding part, and trapezoidal threads are arranged in the nut; the screw rod is rotatably arranged on the base and provided with trapezoidal threads, the screw rod is in threaded connection with the nut, and one part of the screw rod penetrates into a cavity of the sliding part; the limiting piece is arranged on the screw rod, the size of the limiting piece is larger than that of the screw rod in the radial direction of the screw rod, and the limiting piece is positioned in the clamping groove of the base so as to limit the axial direction of the screw rod; the pressing block is detachably arranged on the base and used for limiting the limiting piece in the clamping groove; the actuating lever, the actuating lever sets up keeping away from of lead screw the one end of carriage, the actuating lever is used for rotating the lead screw is rotating under the condition of lead screw, the lead screw drive the screw with the carriage removes.

Furthermore, a part of the nut penetrates through the cavity of the sliding part, a limiting step is arranged on the outer wall of the nut, and the limiting step is abutted against the end face of the sliding part.

Further, the sliding portion is in clearance fit with the sliding groove.

Further, the clamping groove is a circular groove, the limiting part is of a circular ring structure, and the screw rod penetrates through a hole in the pressing block.

Further, the driving rod penetrates through a hole in the screw rod, and the length direction of the driving rod is perpendicular to that of the screw rod.

Further, the driving rod is a bolt, and two nuts are mounted at one end of the driving rod.

Further, the pressure plate is connected with the base through bolts.

Further, the tensioner further comprises: and the wheel shaft is arranged on the mounting part and is used for being matched with the chain wheel.

The technical scheme of the utility model is applied, a tensioning device is provided, the tensioning device comprises a base, a sliding frame, a pressing plate, a screw, a lead screw, a limiting part, a pressing block and a driving rod, wherein the base is fixedly arranged, a sliding groove is arranged in the base, and the radial section of the sliding groove is rectangular; the sliding frame comprises an installation part and a sliding part, the installation part is connected with the sliding part, the installation part is used for installing a chain wheel, the sliding part is slidably arranged in the sliding groove, the shape of the sliding part is matched with that of the sliding groove, and the sliding part is of a hollow structure; the pressing plate is detachably arranged on the base and used for pressing the sliding part in the sliding groove; the nut is fixedly arranged on the sliding part and internally provided with trapezoidal threads; the screw rod is rotatably arranged on the base and provided with trapezoidal threads, the screw rod is in threaded connection with the nut, and one part of the screw rod penetrates into the cavity of the sliding part; the limiting piece is arranged on the screw rod, the size of the limiting piece is larger than that of the screw rod in the radial direction of the screw rod, and the limiting piece is positioned in the clamping groove of the base so as to limit the axial direction of the screw rod; the pressing block is detachably arranged on the base and used for limiting the limiting piece in the clamping groove; the actuating lever sets up the one end of keeping away from the carriage at the lead screw, and the actuating lever is used for rotating the lead screw, and under the condition of rotating the lead screw, lead screw drive screw and carriage remove. Adopt this scheme, when needs tensioning chain, make the lead screw rotate through rotating the actuating lever, the rotation of lead screw can drive screw and sliding part and remove in the spout to can drive the sprocket on the installation department and remove, realize tensioning chain's purpose. The arrangement of the components ensures that the tensioning device has stable and reliable structure, accurate transmission and convenient operation, thereby ensuring the long-term reliable operation of chain transmission.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a tensioning device provided by an embodiment of the present invention;

FIG. 2 shows a schematic view of the carriage in the tensioning device of FIG. 1 after a change in position;

fig. 3 shows another view of the tensioning device of fig. 1.

Wherein the figures include the following reference numerals:

10. a base; 20. a carriage; 30. pressing a plate; 40. a nut; 50. a screw rod; 60. a limiting member; 70. briquetting; 80. a drive rod; 90. and (4) a wheel axle.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in the drawings, embodiments of the present invention provide a tensioning device, comprising: the device comprises a base 10, wherein the base 10 is fixedly arranged, a sliding groove is formed in the base 10, and the radial section of the sliding groove is rectangular; the sliding frame 20 comprises a mounting part and a sliding part, the mounting part is connected with the sliding part, the mounting part is used for mounting a chain wheel, the sliding part is slidably arranged in the sliding groove, the shape of the sliding part is matched with that of the sliding groove, and the sliding part is of a hollow structure; the pressing plate 30, the pressing plate 30 is set up on the base 10 removably, the pressing plate 30 is used for pressing the sliding part in the concrete chute; a nut 40, the nut 40 is fixedly arranged on the sliding part, and trapezoidal threads are arranged in the nut 40; the screw rod 50, the screw rod 50 is set up on the base 10 rotatably, the screw rod 50 has trapezoidal screw thread, the screw rod 50 is connected with screw 40 screw thread, a part of the screw rod 50 penetrates the cavity of the sliding part; the limiting piece 60 is arranged on the screw rod 50, the size of the limiting piece 60 is larger than that of the screw rod 50 in the radial direction of the screw rod 50, and the limiting piece 60 is positioned in the clamping groove of the base 10 so as to limit the axial direction of the screw rod 50; the pressing block 70 is detachably arranged on the base 10, and the pressing block 70 is used for limiting the limiting piece 60 in the clamping groove; and a driving rod 80, wherein the driving rod 80 is arranged at one end of the screw rod 50 far away from the sliding frame 20, the driving rod 80 is used for rotating the screw rod 50, and in the case of rotating the screw rod 50, the screw rod 50 drives the screw nut 40 and the sliding frame 20 to move.

The technical scheme of the utility model is applied, a tensioning device is provided, the tensioning device comprises a base 10, a sliding frame 20, a pressing plate 30, a screw 40, a screw rod 50, a limiting piece 60, a pressing block 70 and a driving rod 80, wherein the base 10 is fixedly arranged, a sliding groove is arranged in the base 10, and the radial section of the sliding groove is rectangular; the sliding frame 20 comprises a mounting part and a sliding part, the mounting part is connected with the sliding part and is used for mounting a chain wheel, the sliding part is slidably arranged in the sliding groove, the shape of the sliding part is matched with that of the sliding groove, and the sliding part is of a hollow structure; the pressing plate 30 is detachably arranged on the base 10, and the pressing plate 30 is used for pressing the sliding part in the sliding groove; the nut 40 is fixedly arranged on the sliding part, and trapezoidal threads are arranged in the nut 40; the screw rod 50 is rotatably arranged on the base 10, the screw rod 50 is provided with trapezoidal threads, the screw rod 50 is in threaded connection with the nut 40, and a part of the screw rod 50 penetrates into the cavity of the sliding part; the limiting piece 60 is arranged on the screw rod 50, the size of the limiting piece 60 is larger than that of the screw rod 50 in the radial direction of the screw rod 50, and the limiting piece 60 is positioned in the clamping groove of the base 10 to limit the axial direction of the screw rod 50; the pressing block 70 is detachably arranged on the base 10, and the pressing block 70 is used for limiting the limiting piece 60 in the clamping groove; a driving lever 80 is provided at an end of the lead screw 50 remote from the carriage 20, and the driving lever 80 is used to rotate the lead screw 50, in which case the lead screw 50 drives the nut 40 and the carriage 20 to move. By adopting the scheme, when the chain needs to be tensioned, the screw rod 50 is rotated by rotating the driving rod 80, and the rotation of the screw rod 50 can drive the screw nut 40 and the sliding part to move in the sliding groove, so that the chain wheel on the mounting part can be driven to move, and the purpose of tensioning the chain is realized. The arrangement of the components ensures that the tensioning device has stable and reliable structure, accurate transmission and convenient operation, thereby ensuring the long-term reliable operation of chain transmission.

In this embodiment, a part of the nut 40 is inserted into the cavity of the sliding portion, and the outer wall of the nut 40 has a limit step, and the limit step abuts against the end surface of the sliding portion. With the above arrangement, positioning and assembling of the nut 40 are facilitated.

In this embodiment, the sliding portion is in clearance fit with the chute, which facilitates movement of the sliding portion.

In the embodiment, the locking groove is a circular groove, the limiting member 60 is a circular ring structure, and the screw rod 50 passes through a hole on the pressing block 70. This ensures smooth rotation of the screw 50.

In the present embodiment, the driving rod 80 passes through the hole of the screw rod 50, and the length direction of the driving rod 80 is perpendicular to the length direction of the screw rod 50. The adoption of the arrangement facilitates assembly and application of torque.

In this embodiment, the driving rod 80 is a bolt, and two nuts are mounted on one end of the driving rod 80. Thus, the structure is simple, and the disassembly and the assembly are convenient.

In the present embodiment, the pressure plate 30 is coupled to the base 10 by bolts. This facilitates assembly of the pressure plate 30.

In this embodiment, the tensioner further comprises: and an axle 90 disposed on the mounting portion, the axle 90 being for engagement with the sprocket. Specifically, the sprocket is threaded onto the axle 90 to enable mounting and rotation of the sprocket.

The application provides a tensioning device, which comprises a base 10, a sliding frame 20, a pressing plate 30, a nut 40, a screw rod 50, a limiting piece 60, a pressing block 70 and a driving rod 80, wherein the base 10 is fixedly arranged, a sliding groove is formed in the base 10, and the radial section of the sliding groove is rectangular; the sliding frame 20 comprises a mounting part and a sliding part, the mounting part is connected with the sliding part and is used for mounting a chain wheel, the sliding part is slidably arranged in the sliding groove, the shape of the sliding part is matched with that of the sliding groove, and the sliding part is of a hollow structure; the pressing plate 30 is detachably arranged on the base 10, and the pressing plate 30 is used for pressing the sliding part in the sliding groove; the nut 40 is fixedly arranged on the sliding part, and trapezoidal threads are arranged in the nut 40; the screw rod 50 is rotatably arranged on the base 10, the screw rod 50 is provided with trapezoidal threads, the screw rod 50 is in threaded connection with the nut 40, and a part of the screw rod 50 penetrates into the cavity of the sliding part; the limiting piece 60 is arranged on the screw rod 50, the size of the limiting piece 60 is larger than that of the screw rod 50 in the radial direction of the screw rod 50, and the limiting piece 60 is positioned in the clamping groove of the base 10 to limit the axial direction of the screw rod 50; the pressing block 70 is detachably arranged on the base 10, and the pressing block 70 is used for limiting the limiting piece 60 in the clamping groove; a driving lever 80 is provided at an end of the lead screw 50 remote from the carriage 20, and the driving lever 80 is used to rotate the lead screw 50, in which case the lead screw 50 drives the nut 40 and the carriage 20 to move. By adopting the scheme, when the chain needs to be tensioned, the screw rod 50 is rotated by rotating the driving rod 80, and the rotation of the screw rod 50 can drive the screw nut 40 and the sliding part to move in the sliding groove, so that the chain wheel on the mounting part can be driven to move, and the purpose of tensioning the chain is realized. The arrangement of the components ensures that the tensioning device has stable and reliable structure, accurate transmission and convenient operation, thereby ensuring the long-term reliable operation of chain transmission. The scheme has high transmission reliability, the tensioning degree of the chain can be finely adjusted, and the application range is wider.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

Claims (8)

1. A tensioner, comprising:

the base (10) is fixedly arranged, a sliding groove is formed in the base (10), and the radial section of the sliding groove is rectangular;

the sliding frame (20) comprises an installation part and a sliding part, the installation part is connected with the sliding part, the installation part is used for installing a chain wheel, the sliding part is slidably arranged in the sliding groove, the shape of the sliding part is matched with that of the sliding groove, and the sliding part is of a hollow structure;

the pressing plate (30), the said pressing plate (30) is set up on the said base (10) removably, the said pressing plate (30) is used for pressing the said sliding part in the said concrete chute;

the nut (40), the said nut (40) is fixedly set up on the said sliding part, have trapezoidal whorl in the said nut (40);

the screw rod (50), the said screw rod (50) is set up on the said base (10) rotatably, the said screw rod (50) has trapezoidal screw thread, the said screw rod (50) is connected with screw (40) screw thread, a part of the said screw rod (50) is penetrated into the cavity of the said sliding part;

the limiting piece (60) is arranged on the screw rod (50), the size of the limiting piece (60) is larger than that of the screw rod (50) in the radial direction of the screw rod (50), and the limiting piece (60) is positioned in a clamping groove of the base (10) to limit the axial direction of the screw rod (50);

the pressing block (70), the pressing block (70) is detachably arranged on the base (10), and the pressing block (70) is used for limiting the limiting piece (60) in the clamping groove;

the driving rod (80), the one end of keeping away from of lead screw (50) carriage (20) is set up in driving rod (80), driving rod (80) are used for rotating lead screw (50), rotate under the condition of lead screw (50), lead screw (50) drive nut (40) with carriage (20) remove.

2. The tensioning device according to claim 1, characterized in that a part of the nut (40) is inserted into the cavity of the sliding part, and the outer wall of the nut (40) is provided with a limit step which is abutted with the end surface of the sliding part.

3. The tensioner as in claim 1, wherein the sliding portion is a clearance fit with the runner.

4. The tensioner as claimed in claim 1, wherein the locking slot is a circular slot, the stop member (60) is a circular ring structure, and the lead screw (50) passes through a hole in the pressing block (70).

5. The tensioner as claimed in claim 1, wherein the drive rod (80) passes through a hole in the lead screw (50), and a length direction of the drive rod (80) is perpendicular to a length direction of the lead screw (50).

6. Tensioner according to claim 5, characterised in that said driving rod (80) is a bolt, on one end of which said driving rod (80) is mounted two nuts.

7. Tensioner according to claim 1, characterized in that said pressure plate (30) is connected to said base (10) by means of bolts.

8. The tensioner as in claim 1, further comprising:

an axle (90) disposed on the mounting portion, the axle (90) for mating with a sprocket.

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