CN219669225U - Chain tensioning device - Google Patents

Abstract

The utility model provides a chain tensioning device, and belongs to the field of chain adjustment. The chain tensioning device comprises a supporting piece, a tensioning piece and a fixing piece. According to the utility model, the supporting piece is fixedly connected to the chain conveyor, so that the whole device is fixed, the outer side surface of the tensioning piece, which extrudes the chain, is pushed to move towards the inner side of the chain conveyor to tension the chain, the tensioning piece is driven to a position with different lengths away from the supporting piece, the extrusion force of the tensioning piece on the chain can be adjusted, when the tensioning piece moves to a preset position in a direction away from or close to the supporting piece, the extrusion force of the tensioning piece is adjusted, the tensioning piece is fixedly connected with the supporting piece through the fixing piece, the position of the tensioning piece is not changed, the extrusion force of the tensioning piece is unchanged, the structure is simple, and the tensioning degree of the chain is convenient to adjust.

Description

Chain tensioning device

Technical Field

The utility model relates to the technical field of chain regulation, in particular to a chain tensioning device.

Background

In the field of heavy-duty transport, chain conveyors are commonly used to transport goods. After goods are conveyed through the flat chain frequently, the chain can be lengthened due to long-time load operation, the chain can inevitably produce a loosening phenomenon, the loosened conveying chain can be soft, the whole conveying chain is loose, the goods are clamped and slide off, and rapid, stable and efficient conveying of products is not facilitated.

Disclosure of Invention

The present utility model aims to solve the above-mentioned drawbacks of the prior art and to provide a chain tensioner.

The utility model provides a chain tensioning device which is used for tensioning and adjusting a chain of a chain conveyor and comprises a supporting piece, a tensioning piece and a fixing piece; the supporting piece is fixedly connected to the chain conveyor; the tensioning piece extrudes the outer side surface of the chain to move towards the inner side of the chain conveyor so as to tension the chain; the fixing piece is used for fixedly connecting the tensioning piece and the supporting piece when the tensioning piece moves to a preset position in a direction away from or close to the supporting piece.

Further, the support member comprises a base plate and a fastening structure for fastening and connecting the end portions of the base plate and the chain conveyor, the axis of the tensioning member is coincident with the axis of the base plate, and the fixing member is used for fixedly connecting the tensioning member to the middle portion of the base plate.

Further, run through and be equipped with first mounting hole on the base plate, be equipped with the installation department on the chain conveyor, run through on the installation department and be equipped with the second mounting hole, fastening structure includes first fixed plate, first screw thread portion, first backstop portion, first fixed plate runs through and is equipped with first screw hole, a first fixed plate side and base plate side respectively the butt in both sides face of installation department, first screw thread portion one end is connected in first backstop portion, the other end passes first mounting hole, second mounting hole in proper order and spiro union in first screw hole, a first backstop portion butt is kept away from a side of first fixed plate on the base plate.

Further, the tensioning piece comprises a pushing structure, an arc extrusion block used for extruding the chain and a fixed block connected with the arc extrusion block; the pushing structure pushes the fixed block to move towards the direction away from the supporting piece so as to increase the extrusion force applied to the chain by the arc extrusion block, and the pushing structure pulls the tensioning piece to move towards the direction close to the supporting piece so as to reduce the extrusion force applied to the chain by the arc extrusion block.

Further, the substrate is provided with a third mounting hole in a penetrating mode, the pushing structure comprises a pushing plate and a connecting rod, one end of the connecting rod is connected to the pushing plate, and the other end of the connecting rod penetrates through the third mounting hole and is connected to the fixing block.

Further, a fourth mounting hole is formed in the substrate in a penetrating mode, a second threaded hole is formed in the fixing block, the fixing piece comprises a second threaded portion and a second stop portion, one end of the second threaded portion is connected to the second stop portion, the other end of the second threaded portion penetrates through the fourth mounting hole and is in threaded connection with the second threaded hole, and the second stop portion is abutted to one side face, away from the fixing block, of the substrate.

Further, the device also comprises two limiting parts for limiting the two side ends of the fixed block respectively.

Further, the limiting piece comprises a limiting plate for limiting one side end of the fixed block and a second fixed plate with two ends respectively connected to the limiting plate and the base plate.

Further, a third threaded hole is formed in the substrate, a fifth mounting hole penetrates through the second fixing plate, the limiting piece further comprises a third threaded portion and a third stop portion, one end of the third threaded portion is connected to the third stop portion, the other end of the third threaded portion penetrates through the fifth mounting hole and is in threaded connection with the third threaded hole, and the third stop portion is in butt joint with the second fixing plate.

Further, the fastening structure further comprises a first gasket, the first gasket is sleeved on the portion, located between the base plate and the first stopping portion, of the first threaded portion, and the base plate, the first gasket and the first stopping portion are sequentially abutted to each other.

The chain tensioning device has the following beneficial effects:

the support piece is fixedly connected to the chain conveyor, thereby fixing the whole device, pushing the tensioning piece to extrude the outer side surface of the chain to move towards the inner side of the chain conveyor so as to tension the chain, driving the tensioning piece to the position with different lengths away from the support piece, then adjusting the extrusion force of the tensioning piece to the chain, and adjusting the extrusion force of the tensioning piece to the preset position when the tensioning piece moves towards the direction far away from or near the support piece, and then ensuring that the position of the tensioning piece is unchanged through the fixing piece.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the utility model. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.

FIG. 1 is a schematic view of a chain tensioner according to an embodiment of the present utility model;

fig. 2 is a front view of a chain tensioner according to an embodiment of the present utility model.

In the figure: 1-supporting piece, 11-base plate, 12-first fixed plate, 13-first screw thread part, 14-first stop part, 15-first washer, 16-second washer, 2-tensioning piece, 21-arc extrusion piece, 22-fixed block, 23-connecting rod, 24-pushing plate, 3-fixed piece, 31-second screw thread part, 32-second stop part, 33-fourth washer, 34-fifth washer, 4-stop piece, 41-stop plate, 42-second fixed plate, 43-third screw thread part, 44-third stop part, 45-third washer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be arbitrarily combined with each other.

Please refer to fig. 1-2. The embodiment of the utility model relates to a chain tensioning device which is used for tensioning and adjusting a chain of a chain conveyor, and comprises a supporting piece 1, a tensioning piece 2 and a fixing piece 3; the support piece 1 is fixedly connected to the chain conveyor; the tensioning piece 2 presses the outer side of the chain to move towards the inner side of the chain conveyor so as to tension the chain; the fixing member 3 is used to fixedly connect the tensioning member 2 and the supporting member 1 when the tensioning member 2 moves to a preset position in a direction away from or toward the supporting member 1.

After the supporting piece 1 is fixedly connected to the chain conveyor, the tensioning piece 2 is aligned with the position to be regulated of the chain, the tensioning piece 2 is positioned on the outer side of the chain conveyor, the tensioning piece 2 is pushed to move towards the direction of the chain by an object or manually, so that the tensioning piece 2 presses the outer side surface of the chain, namely, the tensioning piece 2 presses one side surface of the chain far away from the center of the chain conveyor, the tensioning piece 2 presses the chain, the position of the tensioning piece 2 is arranged in a protruding mode towards the center of the chain conveyor, the position of the tensioning piece 2 is a preset position after the chain is regulated, the tensioning piece 2 is fixedly connected with the supporting piece 1 through the fixing piece 3, the position of the tensioning piece 2 is kept unchanged, and the tensioning degree of the chain is kept unchanged; when the tensioning piece 2 is used for extruding the chain, and then the chain needs to be adjusted again, the position of the tensioning piece 2 is adjusted, when the tensioning degree of the chain needs to be increased, the tensioning piece 2 is driven to move in the direction away from the supporting piece 1, namely, the tensioning piece 2 is driven to move in the direction close to the chain conveyor, the tensioning piece 2 is further extruded by the chain, when the tensioning degree of the chain needs to be reduced, the tensioning piece 2 is driven to move in the direction close to the supporting piece 1, namely, the tensioning piece 2 is driven to move in the direction away from the chain conveyor, and the tensioning piece 2 is further loosened by the chain; when the tensioning piece 2 moves to a preset position, the fixing piece 3 fixedly connects the tensioning piece 2 with the supporting piece 1, so that the position of the tensioning piece 2 is unchanged.

The support 1 may include a base plate 11, a fastening structure for fastening the end of the base plate 11 to the chain conveyor, an axis of the tension member 2 and an axis of the base plate 11 coincide, and the fixing member 3 for fixedly connecting the tension member 2 to the middle of the base plate 11.

Specifically, the substrate 11 may be horizontally disposed.

The base plate 11 can be run through and be equipped with first mounting hole, be equipped with the installation department on the chain conveyer, run through on the installation department and be equipped with the second mounting hole, fastening structure includes first fixed plate 12, first screw thread portion 13, first backstop portion 14, first fixed plate 12 runs through and is equipped with first screw hole, a side of first fixed plate 12 and base plate 11 side butt respectively in the both sides face of installation department, first screw thread portion 13 one end is connected in first backstop portion 14, the other end passes first mounting hole in proper order, the second mounting hole and spiro union in first screw hole, a side of keeping away from first fixed plate 12 on base plate 11 is pressed in first backstop portion 14 butt.

Specifically, the first fixing plate 12 is parallel to the base plate 11. The first screw portion 13 is perpendicular to the base plate 11. The fastening structure may include a first bolt, a portion of the first bolt having a thread is a first threaded portion 13, and a first head portion of the first bolt is a first stop portion 14.

The tensioning member 2 may include a pushing structure, an arc-shaped pressing block 21 to press the chain, and a fixing block 22 connected to the arc-shaped pressing block 21; the pushing structure pushes the fixing block 22 to move towards the direction away from the supporting piece 1 so as to increase the extrusion force of the arc extrusion block 21 on the chain, and the pushing structure pulls the tensioning piece 2 to move towards the direction close to the supporting piece 1 so as to reduce the extrusion force of the arc extrusion block 21 on the chain.

Specifically, the arc extrusion block 21 may be integrally formed with the fixed block 22, and the axis of the arc extrusion block 21 coincides with the axis of the fixed block 22. The fixed block 22 is perpendicular to the base plate 11.

The substrate 11 may be provided with a third mounting hole in a penetrating manner, the pushing structure includes a pushing plate 24 and a connecting rod 23, one end of the connecting rod 23 is connected to the pushing plate 24, and the other end of the connecting rod passes through the third mounting hole and is connected to the fixing block 22. The connecting rod 23 is perpendicular to the center of the fixed block 22.

Specifically, the pushing structure may be a second bolt, and the pushing structure may be a hexagon head bolt, where one end of the second bolt passes through the third mounting hole and is connected to the fixing block 22, so as to push the second head of the second bolt, thereby pushing the fixing block 22.

The substrate 11 can be penetrated and provided with a fourth mounting hole, the fixed block 22 is provided with a second threaded hole, the fixed piece 3 comprises a second threaded part 31 and a second stop part 32, one end of the second threaded part 31 is connected with the second stop part 32, the other end of the second threaded part passes through the fourth mounting hole and is in threaded connection with the second threaded hole, and the second stop part 32 is in butt joint with one side surface of the substrate 11 far away from the fixed block 22.

Specifically, the second screw portion 31 is parallel to the connecting rod 23. The length of the second screw part 31 may be smaller than the length of the connection rod 23. The fixing member 3 may be a third bolt, the fixing member 3 may be a hexagon head bolt, the threaded portion of the third bolt is a second threaded portion 31, and the third head portion of the third bolt is a second stop portion 32.

The chain tensioner according to the present embodiment may further include two stoppers 4 for respectively stopping both side ends of the fixed block 22.

Specifically, the two limiting members 4 are symmetrically arranged.

The limiting member 4 may include a limiting plate 41 for limiting one side end of the fixing block 22, and a second fixing plate 42 having both ends connected to the limiting plate 41 and the base plate 11, respectively.

Specifically, the limiting plate 41 may abut against the fixing block 22 and the arc-shaped pressing block 21, respectively. The limiting plate 41 may be perpendicular to the base plate 11, and the second fixing plate 42 is parallel to the base plate 11.

The base plate 11 may be provided with a third threaded hole, the second fixing plate 42 is provided with a fifth mounting hole in a penetrating manner, the limiting member 4 further includes a third threaded portion 43 and a third stop portion 44, one end of the third threaded portion 43 is connected to the third stop portion 44, the other end of the third threaded portion passes through the fifth mounting hole and is screwed into the third threaded hole, and the third stop portion 44 is abutted to the second fixing plate 42.

Specifically, the third screw portion 43 is perpendicular to the base plate 11. The limiting member 4 may include a fourth bolt, a portion of the fourth bolt having a thread is a third threaded portion 43, and a fourth head of the fourth bolt is a third stop portion 44.

The fastening structure may further include a first washer 15, where the first washer 15 is sleeved on a portion of the first threaded portion 13 between the base plate 11 and the first stop portion 14, and the base plate 11, the first washer 15, and the first stop portion 14 sequentially abut against each other.

Specifically, the first washer 15 may be a flat washer, the fastening structure may further include a second washer 16, the second washer 16 may be sleeved on a portion of the first threaded portion 13 located between the first washer 15 and the first stop portion 14, the first washer 15, the second washer 16, and the first stop portion 14 sequentially abut against each other, and the second washer 16 may be a spring washer. The first gasket 15 and the second gasket 16 can improve the stability of the connection of the first screw portion 13 and the base plate 11.

Specifically, the limiting member 4 may further include a third washer 45 sleeved on the third threaded portion 43 and located between the third stop portion 44 and the second fixing plate 42, where the third stop portion 44, the third washer 45, and the second fixing plate 42 sequentially abut against each other, and the third washer 45 may be a spring washer. The third washer 45 may improve the stability of the connection of the third screw part 43 and the second fixing plate 42.

Specifically, the fixing element 3 may further include a fourth washer 33 and a fifth washer 34 sleeved on the second threaded portion 31 and located between the base plate 11 and the second stop portion 32, where the base plate 11, the fourth washer 33, the fifth washer 34, and the second stop portion 32 are sequentially abutted against each other, the fourth washer 33 may be a flat washer, and the fifth washer 34 may be a spring washer. The fourth and fifth washers 33 and 34 can improve the stability of the connection of the second screw portion 31 and the base plate 11.

Specifically, the structure is simple, the fixed block 22 is pushed by adopting the combined action of the pushing plate 24 and the connecting rod 23, so that the detachable adjustment is convenient in the later maintenance; the arc extrusion block 21 and the fixed block 22 are convenient to replace, so that the labor cost is saved, and the maintenance difficulty is reduced; the limiting pieces 4 are adopted to limit the two side ends of the arc extrusion block 21, so that the arc extrusion block 21 cannot be pulled by a chain along the conveying direction when in action; through the combined action of the second thread part 31 and the second stop part 32, the fixed block 22 is fixed, so that after the tensioning degree of the chain is adjusted, the fixed block 22 is fixed, and the fixed block 22 is prevented from being swayed to cause the excessive abrasion and sliding left and right.

The above description may be implemented alone or in various combinations and these modifications are within the scope of the present utility model.

It should be noted that, in the description of the present utility model, the terms "upper end," "lower end," and "bottom end" of the indicated orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in use of the product of the application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A chain tensioner for tension adjustment for a chain of a chain conveyor, characterized in that: comprises a supporting piece (1), a tensioning piece (2) and a fixing piece (3); the support piece (1) is fixedly connected to the chain conveyor; the tensioning piece (2) presses the outer side surface of the chain to move towards the inner side of the chain conveyor so as to tension the chain; the fixing piece (3) is used for fixedly connecting the tensioning piece (2) with the supporting piece (1) when the tensioning piece (2) moves to a preset position in a direction away from or close to the supporting piece (1).

2. A chain tensioner as set forth in claim 1, wherein: the support piece (1) comprises a base plate (11) and a fastening structure used for fastening and connecting the end part of the base plate (11) with the chain conveyor, the axis of the tensioning piece (2) is coincident with the axis of the base plate (11), and the fixing piece (3) is used for fixedly connecting the tensioning piece (2) to the middle part of the base plate (11).

3. A chain tensioner as set forth in claim 2, wherein: the utility model discloses a chain conveyer, including base plate (11), link chain conveyer, mounting portion, fastening structure, first fixed plate (12), first screw thread portion (13), first backstop portion (14) are equipped with in running through on base plate (11), be equipped with first mounting hole in running through on the chain conveyer, be equipped with the installation department on the link chain conveyer, run through on the installation portion and be equipped with the second mounting hole, fastening structure includes first fixed plate (12), first fixed plate (12) one side and base plate (11) one side respectively the butt in both sides face of installation portion, first screw thread portion (13) one end is connected in first backstop portion (14), the other end passes first mounting hole, second mounting hole and spiro union in first screw hole in proper order, a side of keeping away from first fixed plate (12) on base plate (11) is in first backstop portion (14) butt.

4. A chain tensioner as claimed in claim 2 or claim 3, wherein: the tensioning piece (2) comprises a pushing structure, an arc extrusion block (21) for extruding a chain, and a fixed block (22) connected with the arc extrusion block (21); the pushing structure pushes the fixed block (22) to move towards a direction away from the supporting piece (1) so as to increase the extrusion force of the arc extrusion block (21) applied to the chain, and the pushing structure pulls the tensioning piece (2) to move towards a direction close to the supporting piece (1) so as to reduce the extrusion force of the arc extrusion block (21) applied to the chain.

5. A chain tensioner as set forth in claim 4, wherein: the substrate (11) is provided with a third mounting hole in a penetrating mode, the pushing structure comprises a pushing plate (24) and a connecting rod (23), one end of the connecting rod (23) is connected to the pushing plate (24), and the other end of the connecting rod penetrates through the third mounting hole and is connected to the connecting rod (23).

6. A chain tensioner as set forth in claim 4, wherein: the base plate (11) is provided with a fourth mounting hole in a penetrating mode, the fixing block (22) is provided with a second threaded hole, the fixing piece (3) comprises a second threaded portion (31) and a second stopping portion (32), one end of the second threaded portion (31) is connected to the second stopping portion (32), the other end of the second threaded portion penetrates through the fourth mounting hole and is connected to the second threaded hole in a threaded mode, and the second stopping portion (32) is abutted to one side face, far away from the fixing block (22), of the base plate (11).

7. A chain tensioner as set forth in claim 4, wherein: the device also comprises two limiting pieces (4) used for limiting the two side ends of the fixed block (22) respectively.

8. A chain tensioner as set forth in claim 7, wherein: the limiting piece (4) comprises a limiting plate (41) used for limiting one side end of the fixed block (22), and a second fixed plate (42) with two ends respectively connected with the limiting plate (41) and the base plate (11).

9. A chain tensioner as set forth in claim 8, wherein: be equipped with the third screw hole on base plate (11), run through on second fixed plate (42) and be equipped with the fifth mounting hole, locating part (4) still include third screw thread portion (43), third backstop portion (44), third screw thread portion (43) one end is connected in third backstop portion (44), the other end pass the fifth mounting hole and spiro union in the third screw hole, third backstop portion (44) butt in second fixed plate (42).

10. A chain tensioner as set forth in claim 3, wherein: the fastening structure further comprises a first gasket (15), the first gasket (15) is sleeved on the first threaded portion (13) and located between the base plate (11) and the first stopping portion (14), and the base plate (11), the first gasket (15) and the first stopping portion (14) are sequentially abutted to each other.