CN215487477U

CN215487477U - Pressure spring type automatic chain tensioning device and grinding roller lifting mechanism

Info

Publication number: CN215487477U
Application number: CN202121122998.4U
Authority: CN
Inventors: 陈德和
Original assignee: Jiangxi Universe Intelligent Equipment Co ltd
Current assignee: Jiangxi Universe Intelligent Equipment Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-01-11
Anticipated expiration: 2031-05-24

Abstract

The utility model relates to a pressure spring type automatic chain tensioning device and a grinding roller lifting mechanism, which comprise: the tensioning device comprises a mounting seat, a tensioning block, an adjusting mechanism and a chain, wherein a sliding groove is formed in the mounting seat; the tensioning block is connected with a connecting rod, and one end of the connecting rod extends into the sliding groove to be connected with the mounting seat; the adjusting mechanism comprises a sliding rod, an inclined block and an adjusting component, the sliding rod is fixedly connected to the mounting seat, the inclined surface of the inclined block is in contact with the tensioning block, and the adjusting component pushes the inclined block to reciprocate on the sliding rod, so that the inclined block pushes the tensioning block to compress the chain; the chain is located below the tensioning block. The adjusting assembly drives the inclined block to move to push the tensioning block to move up and down in the sliding groove, so that the pressure on the chain is adjusted, the tensioning state of the chain is changed, the structure is simple, the adjustment is convenient, and the service life of the chain is prolonged.

Description

Pressure spring type automatic chain tensioning device and grinding roller lifting mechanism

Technical Field

The utility model relates to the technical field of tensioning devices, in particular to a compression spring type automatic chain tensioning device and a grinding roller lifting mechanism.

Background

Transmission refers to power transmission between machines, that is, mechanical power is transmitted to a terminal device through an intermediate medium. The transmission modes generally include chain transmission, friction transmission, hydraulic transmission, gear transmission, belt transmission and the like. Compared with other transmission modes, the chain transmission has the advantages of no elastic sliding or slipping phenomenon, accurate average transmission ratio, reliable work, high efficiency, large transmission power, strong overload capacity, small transmission size under the same working condition, small required tension and the like, so that the chain transmission is commonly used in various mechanical designs, such as volcanic ash grinders and other equipment in the PCB industry.

In the chain transmission, because the chain transmission load is large, the chain is easy to stretch and deform in use to generate the chain loosening phenomenon, the chain is easy to repeatedly wear, even the chain is separated from the chain, teeth are jumped and the like, therefore, in order to prevent the chain from loosening, a worker often sets a tension pulley at the side part of the chain, the tension pulley is manually adjusted to keep the chain tensioned, the stability of the chain transmission is ensured, but the worker needs to pay attention to the running condition of the chain all the time, the labor intensity is increased, and once a problem occurs, the machine is stopped to detect and maintain, the operation process is very complicated, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem or at least partially solve the technical problem, the application provides a pressure spring type automatic chain tensioning device and a grinding wheel lifting mechanism.

In a first aspect, the present application provides a compression spring type automatic chain tensioner comprising: a mounting seat, a tensioning block, an adjusting mechanism and a chain,

the mounting seat is provided with a sliding chute;

the tensioning block is connected with a connecting rod, and one end of the connecting rod extends into the sliding groove to be connected with the mounting seat;

the adjusting mechanism comprises a sliding rod, an inclined block and an adjusting component, the sliding rod is fixedly connected to the mounting seat, the inclined plane of the inclined block is in contact with the tensioning block, and the adjusting component pushes the inclined block to move on the sliding rod in a reciprocating mode, so that the inclined block pushes the tensioning block to compress the chain.

Preferably, the adjusting assembly comprises an adjusting rod, a pressing block and an elastic piece, the adjusting rod is located below the sliding rod, one end of the adjusting rod is connected with one surface of the pressing block, the other surface of the pressing block is connected with one end of the elastic piece, the other end of the elastic piece is connected with the inclined block, and the upper end of the pressing block is slidably connected with the sliding rod.

Preferably, a groove is formed in the oblique block, and one end, facing the oblique block, of the elastic piece extends into the groove to be fixed.

Preferably, the depth of the groove is 10mm to 13 mm.

Preferably, the elastic part comprises a pressure spring, one end of the pressure spring is connected with the pressing block, and the other end of the pressure spring extends into the groove and is fixedly connected with the inclined block.

Preferably, the adjusting assembly further comprises a limiting fixed block, the limiting fixed block is mounted on the mounting seat, and a through hole for the adjusting rod and the sliding rod to pass through is formed in the limiting fixed block.

Preferably, the adjusting rod is provided with an adjusting block, and the adjusting block is located on the outer side of the limiting fixed block.

Preferably, the sliding groove is disposed along a vertical direction of the mounting seat.

Preferably, the chute is kidney-shaped.

In a second aspect, the present application provides a mill wheel lifting mechanism comprising: go up and down the tooth case, go up and grind rumble elevator block, grind rumble elevator block down and be used for driving respectively and go up and grind the drive assembly of rumble elevator block and grind rumble elevator block down, drive assembly all includes first lift lead screw, second lift lead screw and chain, first lift lead screw with the one end of second lift lead screw is equipped with first sprocket and second sprocket respectively, the chain respectively with first sprocket with the meshing of second sprocket is connected, first lift lead screw with the other end of second lift lead screw with go up and grind rumble elevator block and/or grind rumble elevator sliding connection down, the top of chain is equipped with respectively and is used for carrying out the overspeed device tensioner adjusted to the chain, overspeed device tensioner is the first aspect pressure spring formula chain automatic take-up device.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the tensioning block extends into the chute through the connecting rod to be connected with the mounting seat and can move up and down in the chute to compress the chain; when the chain is not hard up, promote the sloping block through adjusting part and move along the direction that sets up of slide bar for the tensioning piece is promoted forward by the sloping block and is carried out the up-and-down motion in the spout, realizes adjusting the pressure that the tensioning piece was applyed on the chain, thereby realizes changing the tensioning state of chain, and simple structure adjusts the convenience, has prolonged the life of chain.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

In the drawings:

FIG. 1 is a schematic structural view of the compression spring type automatic chain tensioner of the present invention;

FIG. 2 is a schematic view of the mill wheel lift mechanism of the present invention;

FIG. 3 is a schematic view of a compression spring type automatic chain tensioner pre-second tensioner;

reference numerals: 1. a compression spring type automatic chain tensioning device; 11. a mounting seat; 12. a tensioning block; 13. a chute; 14. a connecting rod; 15. a slide bar; 16. a sloping block; 17. an adjustment assembly; 171. adjusting a rod; 172. briquetting; 173. a pressure spring; 18. a groove; 19. a limit fixing block; 110. an adjusting block; 2. lifting the gearbox; 3. Grinding a windlass lifting block; 4. grinding a windlass lifting block; 5. a first lifting screw rod; 6. a second lifting screw rod; 7. A sprocket; 8. a chain; 9. a second tensioning device;

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the utility model. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

In the description of the present invention, it is noted that in the field of chain tensioners, the forward direction refers to the end of the chain that moves forward, and the distal end refers to the end of the chain that moves in the opposite direction. The foregoing definitions are for convenience only and are not to be construed as limiting the present invention

As shown in fig. 1, in the embodiment of the automatic chain tensioner 1 of the present invention of the compressed spring 173 type 8, the tensioner comprises: a mounting seat 11, a tensioning block 12, an adjusting mechanism and a chain 8,

wherein, a sliding chute 13 is arranged on the mounting seat 11, the tensioning block 12 is connected with a connecting rod 14, and one end of the connecting rod 14 extends into the sliding chute 13 and is connected with the mounting seat 11; the adjusting mechanism comprises a sliding rod 15, an inclined block 16 and an adjusting component 17, the sliding rod 15 is fixedly connected to the mounting seat 11, an inclined surface of the inclined block 16 is in contact with the tensioning block 12, the adjusting component 17 pushes the inclined block 16 to reciprocate on the sliding rod 15, so that the inclined block 16 pushes the tensioning block 12 to compress the chain 8, and the chain 8 is located below the tensioning block 12.

In the embodiment, a tensioning block 12 is arranged above the chain 8 and can move up and down in the sliding groove 13 to compress the chain 8; when the chain 8 is not flexible, promote the sloping block 16 through adjusting part 17 and move along slide bar 15's the direction that sets up, because the inclined plane and the tensioning block 12 contact of sloping block 16 for tensioning block 12 is promoted forward by sloping block 16 and is carried out the up-and-down motion in spout 13, realizes adjusting the pressure that tensioning block 12 applyed on chain 8, thereby realizes changing the tensioning state of chain 8, simple structure, it is convenient to adjust, has prolonged the life of chain 8.

In one embodiment of the present application, the adjusting assembly 17 includes an adjusting rod 171, a pressing block 172, and an elastic member, the adjusting rod 171 is located below the sliding rod 15, one end of the adjusting rod 171 is connected to one surface of the pressing block 172, the other surface of the pressing block 172 is connected to one end of the elastic member, the other end of the elastic member is connected to the inclined block 16, and the upper end of the pressing block 172 is slidably connected to the sliding rod 15. It should be noted that, when the tensioning state of the chain 8 needs to be adjusted, the adjusting rod 171 pushes the pressing block 172 to slide on the sliding rod 15, then the elastic member applies an elastic force to the inclined block 16 in the pressing state of the pressing block 172, so that the inclined block 16 moves forward under the action of the elastic force to push the tensioning block 12, and finally the tensioning block 12 moves up and down under the action of the inclined block 16 to press the chain 8, thereby adjusting the tensioning state of the chain 8.

In one embodiment of the present application, the sloping block 16 is provided with a groove 18, the end of the elastic member facing the sloping block 16 extends into the groove 18 for fixing, and the depth of the groove 18 is 10mm to 13 mm. The elastic piece is fixed by arranging the groove 18 on the inclined block 16, so that the elastic force applied to the inclined block 16 by the elastic piece is more uniform, and the inclined block 16 moves more stably.

Specifically, the elastic member includes a compression spring 173, one end of the compression spring 173 is connected to the pressing block 172, and the other end of the compression spring 173 extends into the groove 18 and is fixedly connected to the sloping block 16.

In an embodiment of the present application, the adjusting assembly 17 further includes a limit fixing block 19, the limit fixing block 19 is installed on the mounting base 11, a through hole for the adjusting rod 171 and the sliding rod 15 to pass through is formed in the limit fixing block 19, an adjusting block 110 is arranged on the adjusting rod 171, and the adjusting block 110 is located outside the limit fixing block 19. It should be noted that the adjusting rod 171 and the sliding rod 15 pass through the through hole of the limiting fixing block 19, and the adjusting block 110 is added to limit the adjusting rod 171, so that the adjusting rod 171 can be fixed after being adjusted in place, and unstable adjustment is avoided.

In one embodiment of the present application, the sliding groove 13 is disposed along a vertical direction of the mounting seat, and the sliding groove 13 is waist-shaped. The sliding groove 13 is arranged in the vertical direction, so that the sliding rod 15 in the sliding groove 13 can move along the direction of the sliding groove 13, and the tensioning block 12 moves up and down to compress the chain 8.

As shown in fig. 2, the automatic tensioning device 1 of the compression spring 173 type chain 8 in the above embodiment can also be used in the technical field of PCB automatic equipment, that is, according to another aspect of the present invention, there is provided a grinding wheel lifting mechanism, comprising: the lifting gearbox 2, go up and grind rumble elevator block 3, grind rumble elevator block 4 down and be used for driving the transmission assembly who goes up and grind rumble elevator block 3 and grind rumble elevator block 4 down respectively, wherein, transmission assembly all includes first lift lead screw 5, second lift lead screw 6 and chain 8, the one end of first lift lead screw 5 and second lift lead screw 6 is equipped with first sprocket 7 and second sprocket 7 respectively, chain 8 is connected with first sprocket 7 and second sprocket 7 meshing respectively, the other end of first lift lead screw 5 and second lift lead screw 6 and last mill rumble elevator block 3 and/or grind rumble elevator block 4 sliding connection down, the top of chain 8 is equipped with the overspeed device that is used for adjusting chain 8 respectively, overspeed device is the automatic overspeed device 1 of pressure spring 173 formula chain 8 of any one of the above-mentioned embodiment. Come the drive respectively through accommodate the lead screw and go up mill rumble elevator block 3 and grind rumble elevator block 4 down and carry out the up-and-down motion, realize grinding rumble elevator block 3 and grind rumble elevator block 4's regulation down on to set up pressure spring 173 formula chain 8 automatic tensioning device 1 in the top of chain 8 and adjust the tensioning state of chain 8, realize changing the tensioning state of chain 8, simple structure, it is convenient to adjust, has prolonged the life of chain 8.

As shown in fig. 3, since the length of the chain 8 is relatively long, a plurality of compression spring 173 type automatic chain tensioning devices 1 may be provided in front of or behind the tensioning device to adjust the length of the chain 8, another second tensioning device 9 may be provided to adjust the length of the chain 8 in cooperation with the compression spring 173 type automatic chain tensioning devices 1, and the second tensioning device 9 may be a conventional tensioning device, which is not limited herein.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the utility model, are given by way of illustration and description, and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The utility model provides a pressure spring formula chain automatic tensioning device which characterized in that includes: a mounting seat, a tensioning block and an adjusting mechanism,

the mounting seat is provided with a sliding chute;

2. The compression spring type automatic chain tensioning device according to claim 1, wherein the adjusting assembly comprises an adjusting rod, a pressing block and an elastic member, the adjusting rod is located below the sliding rod, one end of the adjusting rod is connected with one surface of the pressing block, the other surface of the pressing block is connected with one end of the elastic member, the other end of the elastic member is connected with the inclined block, and the upper end of the pressing block is slidably connected with the sliding rod.

3. The automatic tension device for compression spring type chain as claimed in claim 2, wherein the sloping block is provided with a groove, and one end of the elastic member facing the sloping block is inserted into the groove for fixing.

4. The compression spring type automatic chain tensioner according to claim 3, wherein the depth of the groove is 10mm to 13 mm.

5. The automatic tension device of claim 3, wherein the elastic member comprises a compression spring, one end of the compression spring is connected to the pressing block, and the other end of the compression spring extends into the groove and is fixedly connected to the inclined block.

6. The compression spring type automatic chain tensioning device according to claim 2, wherein the adjusting assembly further comprises a limiting fixed block, the limiting fixed block is mounted on the mounting seat, and a through hole for the adjusting rod and the sliding rod to pass through is formed in the limiting fixed block.

7. The compression spring type automatic chain tensioning device according to claim 6, wherein an adjusting block is arranged on the adjusting rod and is positioned outside the limiting fixed block.

8. The automatic compression spring type chain tensioner according to claim 1, wherein the slide groove is provided in a vertical direction of the mount base.

9. The compression spring type chain automatic tensioning device according to claim 8, wherein the sliding groove is waist-shaped.

10. A mill windlass lifting mechanism, comprising: the lifting gearbox, the upper grinding roller lifting block, the lower grinding roller lifting block and the transmission assembly used for driving the upper grinding roller lifting block and the lower grinding roller lifting block respectively are all provided with a first lifting screw rod, a second lifting screw rod and a chain, one end of the first lifting screw rod and one end of the second lifting screw rod are respectively provided with a first chain wheel and a second chain wheel, the chain is connected with the first chain wheel and the second chain wheel in a meshed mode, the other end of the first lifting screw rod and the other end of the second lifting screw rod are in sliding connection with the upper grinding roller lifting block and/or the lower grinding roller lifting block, a tensioning device used for adjusting the chain is arranged above the chain respectively, and the tensioning device is the pressure spring type automatic tensioning device of the pressure spring type chain as claimed in any one of claims 1-9.