CN210500436U

CN210500436U - Rotary knife capable of automatically compensating

Info

Publication number: CN210500436U
Application number: CN201920958947.1U
Authority: CN
Inventors: 李沛海; 汪健; 吴印; 张明明; 彭期伟
Original assignee: Chongqing Changzheng Heavy Industry Co Ltd
Current assignee: Chongqing Changzheng Heavy Industry Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-05-12
Anticipated expiration: 2029-06-25

Abstract

The utility model relates to a cutting blade field, concretely relates to rotatory sword that can automatic compensation. Comprises a blade, a cutter head, a mounting seat and a bearing seat; the mounting seat is fixedly arranged with the cutter head, and the bearing seat is connected with the rotating shaft through a bearing; the bearing frame and the mounting seat form a cavity, at least two thrust components are arranged in the cavity and used for pushing the bearing frame, the bearing frame drives the rotating shaft to move in the direction far away from the mounting seat, and then the blade is pushed to automatically compensate the cutter head, so that the problems that the cutting quality is poor and parts are damaged due to the fact that the blade is abraded to generate a gap are solved.

Description

Rotary knife capable of automatically compensating

Technical Field

The utility model relates to a cutting blade field, especially a rotatory sword that can automatic compensation.

Background

The existing cutting equipment comprises a blade and a cutter head, wherein the blade is a movable knife, the cutter head is a fixed knife, the blade is tightly attached to the cutter head, and when the cutting is carried out, the material is fed in the direction of the blade and is discharged from a hollow hole on the cutter head; the blades rotate relative to the cutter disc, so that the material is cut. In the cutting process, the movable blade correspondingly generates abrasion with a knife edge contacted with the cutter head, and after the movable blade is abraded, a gap is formed between the movable blade and the cutter head, so that the cutting effect and the service life of the blade are influenced. In the prior art, after the cutting blade is worn, the wear needs to be adjusted and compensated manually. This way of compensating for wear is not only cumbersome to operate, but also needs to be carried out in a shutdown state to ensure safety; therefore, there are disadvantages that the apparatus cannot be continuously operated and the production efficiency is low, and improvement is required.

Disclosure of Invention

The invention of the utility model aims to: the problem of cutting blade wearing and tearing back need manual adjustment that exists to prior art realizes that cutting blade carries out automatic compensation after wearing and tearing.

In order to realize the purpose, the utility model discloses a technical scheme be:

a rotary knife capable of automatically compensating comprises a rotating shaft and a blade fixedly connected to one end of the rotating shaft, and is characterized by further comprising a cutter head and a mounting seat which are fixedly arranged; the cutter head is positioned between the mounting seat and the blade; the front end of the rotating shaft penetrates through the cutter head, the rotating shaft is movably and rotatably arranged on the mounting seat, and the mounting seat is close to the tail end of the rotating shaft; the tail end of the rotating shaft is connected with a bearing seat through a first bearing, and the bearing seat can drive the rotating shaft to move towards the direction far away from the mounting seat; and a thrust component is arranged between the bearing seat and the mounting seat, and pushes the bearing seat to be far away from the mounting seat, so that the blade is tightly attached to the cutter head.

The utility model discloses an in the scheme, be equipped with the blade disc in the head the place ahead of mount pad, blade disc and mount pad are fixed the setting. The blade is adjacent to the cutter head. The head of the mounting seat is one end close to the blade along the rotating shaft, and the tail end of the mounting seat is the other end. The thrust component between the mounting seat and the bearing seat enables the blade to be tightly attached to the cutter head.

When a gap is formed between the cutter disc and the blades in the cutting process of the blades, the thrust component pushes the bearing seat to move in the direction far away from the cutter disc. Because the bearing frame joint is on the rotation axis, drive the rotation axis then and remove. The blade and the cutter head are kept in a close-fitting state all the time, and the gap generated after the blade is abraded is automatically compensated. The pushing component may be a spring or other member having a pushing force.

As the utility model discloses a preferred scheme, sliding connection has the sleeve on the rotation axis, and the sleeve passes through second bearing and mount pad fixed connection. The rotating shaft and the mounting seat form axial relative movement through the shaft sleeve, and form relative rotation through the second bearing and the mounting seat, so that the rotating shaft is ensured to have a movement relation which can axially move and rotate relative to the mounting seat, and the structure is simple, and the function is reliable.

The sleeve is provided with two second bearings, and a shaft sleeve is arranged between the two second bearings; the sleeve is provided with a thrust ring, and the thrust ring is used for limiting the position of a second bearing at the inner end. The axial position of the two second bearings is defined by the thrust ring and the shaft sleeve, so that the two bearings form a stable support for the rotating shaft.

As the preferred scheme of the utility model, a dustproof transparent cover is arranged on the head of the mounting seat, and the dustproof transparent cover is fixedly connected with the cutter head; the dust-tight covers also constitute an axial position limitation for the two second bearings.

The installation is dustproof to pass through the lid and can seal the mount pad, reaches dirt-proof effect and protects the inside bearing of mount pad.

The dustproof transparent cover prevents the two second bearings from jumping outwards and can prevent bearing grease in the mounting seat from leaking and being polluted; thereby prolonging the service life.

As a preferable scheme of the utility model, wherein, the mounting seat is formed with a cavity for installing the thrust component, and the bearing seat is positioned in the cavity; a convex-concave matching structure is formed between the inner wall of the cavity of the mounting seat and the bearing seat and is used for preventing the bearing seat from rotating; the bearing seat is of a cylindrical structure, and a cylinder opening of the bearing seat is provided with a flange extending outwards; the two ends of the thrust component are propped between the flange and the cavity bottom of the cavity. The rolling friction characteristic of the first bearing is fully utilized, the bearing seat and the mounting seat are prevented from rotating relatively, various selectable modes are provided for selection and connection of the thrust component and the mounting seat, and the reliable operation of the thrust component is ensured.

As the preferred scheme of the utility model, wherein, thrust part is the pneumatic cylinder. The automatic compensation driving of constant thrust can be formed by setting the pressure of the hydraulic cylinder; the wear of the blade can also be estimated from the oil pressure of the hydraulic thrust.

As a preferable scheme of the utility model, the knife handle is fixed by a fixing nut screwed on the rotating shaft; a nut sleeve is arranged between the fixed nut and the knife handle. The existing threaded fastener is fully utilized to realize the fixation of the knife handle, so that the structure is simplified, and the cost is reduced.

As a preferable aspect of the present invention, wherein the first bearing is a thrust ball bearing; the second bearing is a deep groove ball bearing.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. when the blade is used for cutting, after a gap is formed between the blade and the cutter head, the thrust bearing drives the rotating shaft to move, so that the blade and the cutter head are kept in a close-fitting state all the time, and the purpose of automatically compensating the gap between the blade and the cutter head is achieved.

2. The staff can judge the wearing and tearing condition of blade through observing the oil pressure condition of pneumatic cylinder. When the oil pressure of the hydraulic cylinder is lower than a first preset threshold value and is stable and unchanged, a worker can judge that the blade is worn and the bearing seat pushes the rotating shaft to compensate. When the oil pressure of the hydraulic cylinder is lower than the second preset threshold value, the cutter blade is replaced by a worker, and the phenomenon that the cutting quality is influenced and the cutter head or other parts are damaged when the cutter blade is not replaced in time is avoided.

3. The device provided by the scheme is simple in adjustment mode, does not occupy working time, and improves the working efficiency of cutting; meanwhile, the utilization rate of the blade is improved, and the operation cost is reduced.

Description of the drawings:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 3 is a left side view of embodiment 2 of the present invention.

The labels in the figure are: 1, a knife handle, 2 blades, 3, a knife disc, 4 mounting seats and 5 thrust parts; the device comprises a bearing seat 6, a coupler 7, a rotating shaft 8, a thrust ball bearing 9, a shaft sleeve 10, a thrust ring 11, a sleeve 12, a deep groove ball bearing 13, a dustproof transparent cover 14, a nut sleeve 15 and a fixing nut 16.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

The embodiment provides a rotary cutter capable of automatically compensating, which comprises a cutter handle 1, a blade 2, a cutter head 3, a mounting seat 4, a thrust component 5, a bearing seat 6, a coupler 7, a rotating shaft 8, a thrust ball bearing 9, a sleeve 12 and a deep groove ball bearing 13.

As shown in fig. 1 the utility model discloses embodiment 1's structural schematic diagram is shown, is equipped with handle of a knife 1 in the one end of rotation axis 8, and handle of a knife 1 can be fixed at rotation axis 8 front end through threaded connection, is equipped with a plurality of blade 2 on handle of a knife 1, and rotation axis 8's the other end is shaft coupling 7, and shaft coupling 7 provides rotary power, makes the rotatory work of blade 2.

The cutter head 3 and the mounting seat 4 are fixed on the machine tool, and the cutter head 3 is closely adjacent to the blade 2.

There is sleeve 12 on the 8 middle parts of rotation axis, and there are deep groove ball bearing 13 at sleeve 12 last both ends, and rotation axis 8 passes through sleeve 12 and deep groove ball bearing 13 and sets up on

mount pad

4, and 8 tail ends of rotation axis are equipped with the arch, and bearing frame 6 passes through thrust ball bearing 9 to be connected at 8 tail ends of rotation axis, and thrust ball bearing 9 is located protruding inboard.

The mounting seat 4 and the bearing seat 6 form a cavity, a thrust component 5 is arranged in the cavity, and the thrust component 5 is used for pushing the bearing seat 6 to move towards the coupler 7 by taking the mounting seat 4 as an acting point. Therefore, the thrust member 5 should be a power member with constant thrust on the market; it should be understood that the same or similar technical solutions are achieved by directly replacing the components or mechanisms which achieve the same or similar functions, and the technical solutions also fall within the protection scope of the present invention.

Here, the thrust member 5 employs a hydraulic cylinder as a thrust power source.

When the rotary cutter capable of automatically compensating in the embodiment is used, the material can be fed from the direction of the cutter handle 3, the main cutting objects are sludge, straw stalks and the like, and the material can be discharged through the hollow holes in the cutter head 3 after cutting.

When the blade 2 is worn, the bearing seat 6 can drive the rotating shaft 8 to move towards the direction far away from the mounting seat 4, so that the blade 2 and the cutter head 3 are kept in a close-fitting state all the time, and the function of automatically compensating the gap generated by the blade 2 due to wear is realized.

Example 2

Embodiment 2 provides a rotary cutter capable of automatically compensating, including handle of a knife 1, blade 2, blade disc 3, mount pad 4, thrust part 5, bearing frame 6, shaft coupling 7, rotation axis 8, thrust ball bearing 9, the axle sleeve, 10, thrust ring 11, sleeve 12, deep groove ball bearing 13, dustproof penetrating cover 14, nut cover 15, fixation nut 16.

As shown in fig. 2 the utility model discloses embodiment 2's structural schematic diagram is shown, is equipped with handle of a knife 1 in the one end of rotation axis 8, and handle of a knife 1 can be fixed at rotation axis 8 front end through threaded connection, is equipped with a plurality of blade 2 on handle of a knife 1, and rotation axis 8's the other end is shaft coupling 7, and shaft coupling 7 provides rotary power, makes the rotatory work of blade 2.

The knife handle 1 is fixed through a fixing nut 16 screwed on the rotating shaft 8; a nut sleeve 15 is arranged between the fixed nut 16 and the knife handle 1. The blade 2 and the cutter head 3 are more fixed and firm, the structure is simplified by colleagues, and the cost is reduced.

A sleeve 12 is arranged in the middle of the rotating shaft 8, deep groove ball bearings 13 are arranged at two ends of the sleeve 12, and the rotating shaft 8 is arranged on the mounting seat 4 through the sleeve 12 and the deep groove ball bearings 13. A shaft sleeve 10 is arranged between the two deep groove ball bearings 13; a thrust collar 11 is provided at the end of the sleeve 12 remote from the cutter head 3. The axial position of the two deep groove ball bearings 13 is defined by the thrust ring 11 and the shaft sleeve 10, so that the two deep groove ball bearings 13 stably support the rotating shaft.

The mounting seat 4 is provided with a cavity for mounting the thrust component 5, and the bearing seat 6 is positioned in the cavity; the tail end of the rotating shaft 8 is provided with a bulge, the bearing seat 6 is connected to the tail end of the rotating shaft 8 through a thrust ball bearing 9, and the thrust ball bearing 9 is positioned on the inner side of the bulge.

A dustproof transparent cover 14 is arranged at the head part of the mounting seat 4, and the dustproof transparent cover 14 is fixedly connected with the cutter head 3; the dust-proof transparent cover is abutted against the two deep groove ball bearings 13. The dustproof transparent cover 14 prevents the two deep groove ball bearings from jumping outwards and can prevent bearing grease in the mounting seat 4 from leaking and being polluted; thereby prolonging the service life.

If fig. 3 is the left side view of the utility model discloses embodiment 2 shows, and the fig. 3 direction is the direction of feed, follows the 3 direction feeding of handle of a knife, and main cutting object is mud, straw stalk etc. will be through the fretwork hole ejection of compact on the blade disc 3 after the cutting.

When the blade 2 is used for cutting, after a gap is formed between the blade 2 and the cutter disc 3, the bearing seat 6 can drive the rotating shaft 8 to move towards the direction far away from the mounting seat 4, so that the blade 2 and the cutter disc 3 are kept in a close-fitting state all the time, and the function of compensating the gap generated by abrasion of the blade 2 is realized.

Meanwhile, the worker can also push the abrasion condition of the blade by observing the oil pressure change condition of the hydraulic cylinder, and then decide whether to replace the blade.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A rotary knife capable of automatically compensating comprises a rotating shaft (8) and a blade (2) fixedly connected to one end of the rotating shaft, and is characterized by further comprising a cutter head (3) and a mounting seat (4) which are fixedly arranged; the cutter head (3) is positioned between the mounting seat (4) and the blade (2); the front end of the rotating shaft (8) penetrates through the cutter head (3), the rotating shaft (8) is movable and can be rotatably arranged on the mounting seat (4), and the mounting seat (4) is close to the tail end of the rotating shaft (8); the tail end of the rotating shaft (8) is connected with a bearing seat (6) through a first bearing (9), and the bearing seat (6) can drive the rotating shaft (8) to move towards the direction far away from the mounting seat (4); bearing frame (6) with be equipped with thrust part (5) between mount pad (4), thrust part (5) promote bearing frame (6) are kept away from mount pad (4), so that blade (2) are hugged closely cutterhead (3).

2. Self-compensating rotary knife according to claim 1, characterised in that a sleeve (12) is connected to the rotary shaft (8) in a sliding manner, the sleeve (12) being fixedly connected to the mounting (4) via a second bearing (13).

3. The rotary knife with automatic compensation according to claim 2, characterized in that the sleeve (12) is provided with two second bearings (13), and a shaft sleeve (10) is arranged between the two second bearings (13); the sleeve (12) is provided with a thrust ring (11), and the thrust ring (11) is used for limiting the position of the inner end second bearing (13).

4. The rotary knife capable of automatically compensating according to claim 3, wherein a dustproof transparent cover (14) is arranged on the mounting seat, and the dustproof transparent cover (14) is positioned at the outer ends of the two second bearings (13) and is fixedly connected with the knife disc (3).

5. Automatic-compensating rotary knife according to claim 4, characterised in that the mounting seat (4) is formed with a cavity housing the thrust member (5) and in which the bearing seat (6) is located; a convex-concave matching structure is formed between the inner wall of the cavity of the mounting seat (4) and the bearing seat (6), and the convex-concave matching structure is used for preventing the bearing seat (6) from rotating; the bearing seat (6) is of a cylindrical structure, and a cylinder opening of the bearing seat (6) is provided with an outwardly extending flange; and two ends of the thrust component (5) are abutted between the flange and the cavity bottom of the cavity.

6. Automatic-compensating rotary knife according to claim 5, characterised in that the thrust member (5) is a hydraulic cylinder.

7. Automatic-compensating rotary knife according to claim 6, characterised in that the blade (2) is provided on the rotary shaft (8) by means of a handle (1).

8. The rotary knife with automatic compensation according to claim 7, characterized in that the handle (1) is fixed by a fixing nut (16) screwed on the rotation shaft (8); a nut sleeve (15) is arranged between the fixed nut (16) and the knife handle (1).

9. Automatic compensable rotary knife according to any one of claims 1 to 8, characterized in that said first bearing (9) is a thrust ball bearing.

10. Automatic compensating rotary knife according to one of claims 2 to 8, characterised in that the second bearing (13) is a deep groove ball bearing.