Excavator bucket lug plate straightening device

Abstract

The invention discloses an excavator bucket lug plate straightening device, and relates to the technical field of straightening devices, the excavator bucket lug plate straightening device comprises a mounting plate, the mounting plate straightens a lug plate on an excavator bucket through a straightening mechanism, the straightening mechanism comprises a side plate, the side plate is fixedly connected to one side of the mounting plate, a movable groove is formed in the outer wall of the side plate, and the excavator bucket lug plate straightening device further comprises an adjusting mechanism. By arranging the straightening mechanism and the adjusting mechanism, the clamping plate is pushed to move, and the clamping plate and the mounting plate are clamped on one side of the excavator bucket together; the position of the movable seat is adjusted to drive the cylinder and the straightening plate to move synchronously; through cooperation of parts in the adjusting mechanism, the position of the positioning plate is adjusted, the air cylinder operates to drive the straightening plate to move, the straightening plate extrudes and corrects the lug plate till the lug plate is aligned with the positioning plate, and straightening operation can be completed. According to the device, the lug plate on the excavator bucket can be corrected conveniently, a measuring scale does not need to be erected multiple times for measurement, and operation and use are more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of straightening devices, and particularly relates to a bucket ear plate straightening device. BACKGROUND

[0002] A bucket excavator is an excavating machine with a bucket as a core component, and the bucket is welded by a tooth seat plate, a bottom plate, a side plate and the like, and an ear plate is arranged on the bucket. However, when the bucket is unevenly stressed, the ear plate will bear additional lever effect stress, so that local stress exceeds the material yield limit, at this time, the ear plate weld area and the edge tooth part are prone to plastic deformation due to stress concentration. The ear plate, as a core connecting piece of the bucket and the bucket rod, needs to transmit multi-directional forces during excavation, and bending of the bucket ear plate will seriously affect the use of the bucket. In order to achieve the purpose of conveniently straightening the bucket ear plate, a bucket ear plate straightening device is provided. SUMMARY

[0003] The present application aims at achieving the purpose of conveniently straightening the bucket ear plate, and provides a bucket ear plate straightening device.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a bucket ear plate straightening device, comprising symmetrically arranged mounting plates, the mounting plates are used for straightening operation on the ear plate on the bucket through a straightening mechanism, the straightening mechanism comprises a side plate, the side plate is fixedly connected to one side of the mounting plate, an outer wall of the side plate is provided with a movable groove, an inner wall of the movable groove is slidably connected with a movable seat, one end of the side plate is rotatably connected with a rotating column, an outer wall of the rotating column is fixedly connected with a first threaded rod, the first threaded rod penetrates through the movable seat, an outer wall of the movable seat is provided with a pneumatic cylinder, an output end of the pneumatic cylinder is fixedly connected with a straightening plate in a structure of a "∩" shape, one end of the straightening plate is provided with a positioning plate, and the position of the positioning plate is adjusted through an adjusting mechanism.

[0005] As a further scheme of the present application: the straightening mechanism further comprises a displacement groove, the displacement groove is arranged on an outer wall of the mounting plate, an inner wall of the displacement groove is slidably connected with a displacement rod, an outer wall of the displacement rod is fixedly connected with a clamping plate, an inner portion of the mounting plate is slidably connected with a clamping block extending into an inner cavity of the displacement groove, the clamping block extends out of the mounting plate, a first spring is connected between the clamping block and the mounting plate, an outer wall of the clamping block located in the inner portion of the mounting plate is provided with a sliding groove, an inner portion of the clamping block is slidably connected with a sliding plate extending into an inner cavity of the sliding groove, an outer wall of the clamping block is rotatably connected with a rotating block, one end of the rotating block is fixedly connected with a second bevel gear, an inner portion of the clamping block located at an outer wall of the second bevel gear is rotatably connected with a first bevel gear, one end of the first bevel gear is fixedly connected with a second threaded rod, and the second threaded rod penetrates through the sliding plate.

[0006] As a further scheme of the present application: the adjusting mechanism comprises an adjusting groove, the adjusting groove is arranged in the interior of the movable seat, a fixing groove is arranged on one side of the inner wall of the adjusting groove, an adjusting frame is slidably connected to the inner wall of the adjusting groove, a fixing block extending to the outer wall of the adjusting frame is slidably connected to the interior of the adjusting frame, a second spring is connected between the fixing block and the adjusting frame, an adjusting column is rotatably connected to the outer wall of the adjusting frame, a third threaded rod is fixedly connected to the bottom end of the adjusting column, a pressing rod is connected to the outer wall of the third threaded rod, the pressing rod is slidably connected to the interior of the adjusting frame and located above the fixing block, a horizontal groove is arranged at the top of the adjusting frame, a positioning plate is slidably connected to the inner wall of the horizontal groove, a tooth block is fixedly connected to the top end of the positioning plate, a tooth plate is slidably connected to the interior of the adjusting frame above the tooth block, and the third threaded rod penetrates the tooth plate.

[0007] As a further scheme of the present application: the inner wall of the displacement groove is fitted with the outer wall of the displacement rod, the outer wall of the displacement rod is provided with a ratchet, and one end of the clamping block is engaged with the ratchet.

[0008] As a further scheme of the present application: the outer wall of the sliding plate is fitted with the inner wall of the sliding groove, and the second bevel gear is engaged with the first bevel gear.

[0009] As a further scheme of the present application: the outer wall of the sliding plate is provided with a second threaded hole, and the second threaded hole is matched with the second threaded rod.

[0010] As a further scheme of the present application: the outer wall of the movable seat is fitted with the inner wall of the movable groove, the outer wall of the movable seat is provided with a first threaded hole, and the first threaded hole is matched with the first threaded rod.

[0011] As a further scheme of the present application: the inner wall of the horizontal groove is fitted with the outer wall of the positioning plate, a limiting rod penetrating the positioning plate is fixedly connected to the inner wall of the horizontal groove, and a limiting hole capable of sliding along the limiting rod is arranged on the outer wall of the positioning plate.

[0012] As a further scheme of the present application: the inner wall of the adjusting groove is fitted with the bottom outer wall of the adjusting frame, one end of the outer wall of the fixing block is fitted with the inner wall of the fixing groove, an inclined surface is arranged at the top end of the fixing block, and the bottom end of the pressing rod is located above the inclined surface.

[0013] As a further scheme of the present application: a tooth groove is arranged at the bottom end of the tooth plate, the tooth groove is engaged with the tooth block, third threaded holes are arranged on the outer walls of the tooth plate and the pressing rod, and the third threaded holes are matched with the third threaded rod.

[0014] Compared with the prior art, the present application has the beneficial effects that: By setting the straightening mechanism and the adjusting mechanism, the clamping plate is displaced, and the clamping plate and the mounting plate are clamped on one side of the excavator bucket; at this time, the clamping block is engaged with the displacement rod, thereby fixing the position between the clamping plate and the mounting plate; the position of the movable seat is adjusted to drive the cylinder and the straightening plate to move synchronously; by adjusting the position of the positioning plate through the cooperation of the parts in the adjusting mechanism, the positioning plate is located on the plane where the side of the ear plate to be straightened is located, that is, the correct position of the side of the ear plate after straightening towards the side of the positioning plate, and the positioning plate plays the role of a ruler. The cylinder operates to drive the straightening plate to displace, and the straightening plate performs extrusion and straightening operation on the ear plate until the straightening plate is aligned with the positioning plate, thereby completing the straightening operation. The device can conveniently straighten the ear plate on the excavator bucket without the need for multiple setups of measuring scales for measurement, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a structural schematic diagram of the present application; Figure 2 The figure is a structural schematic diagram of the mounting plate of the present application; Figure 3 The figure is a mounting schematic diagram of the clamping block of the present application; Figure 4 The figure is an internal structural schematic diagram of the mounting plate of the present application; Figure 5 The figure is an internal structural schematic diagram of the clamping block of the present application; Figure 6 The figure is an internal structural schematic diagram of the movable seat of the present application; Figure 7 The figure is an internal structural schematic diagram of the adjusting frame of the present application.

[0016] In the figure: 1, mounting plate; 2, excavator bucket; 3, ear plate; 4, straightening mechanism; 401, side plate; 402, movable groove; 403, movable seat; 404, rotating column; 405, first threaded rod; 406, cylinder; 407, straightening plate; 408, positioning plate; 409, displacement groove; 410, displacement rod; 411, clamping plate; 412, clamping block; 413, first spring; 414, sliding groove; 415, sliding plate; 416, second threaded rod; 417, first bevel gear; 418, second bevel gear; 419, rotating block; 5, adjusting mechanism; 501, adjusting groove; 502, fixed groove; 503, adjusting frame; 504, fixed block; 505, second spring; 506, pressing rod; 507, third threaded rod; 508, adjusting column; 509, transverse groove; 510, tooth block; 511, tooth plate; 6, limiting rod. DETAILED DESCRIPTION

[0017] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0018] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances. The embodiments of the present application will be described below according to the overall structure of the present application.

[0019] Please refer to Figures 1 to 7The embodiment of the present application is a kind of ear plate straightening device of excavator bucket, including symmetrically arranged mounting plate 1, mounting plate 1 is straightened on the ear plate 3 of excavator bucket 2 by straightening mechanism 4 and is straightened, straightening mechanism 4 includes side plate 401, side plate 401 is fixedly connected to one side of mounting plate 1, the outer wall of side plate 401 is provided with movable groove 402, the inner wall of movable groove 402 is slidably connected with movable seat 403, one end of side plate 401 is rotatably connected with rotating column 404, the outer wall of rotating column 404 is fixedly connected with first threaded rod 405, first threaded rod 405 penetrates movable seat 403, the outer wall of movable seat 403 is installed with air cylinder 406, the output end of air cylinder 406 is fixedly connected with straightening plate 407 with structure " ∩ " shape, one end of straightening plate 407 is provided with positioning plate 408, the position of positioning plate 408 is adjusted by adjusting mechanism 5, straightening mechanism 4 further includes displacement slot 409, displacement slot 409 is provided on the outer wall of mounting plate 1, the inner wall of displacement slot 409 is slidably connected with displacement rod 410, the outer wall of displacement rod 410 is fixedly connected with clamping plate 411, the inside of mounting plate 1 is slidably connected with clamping block 412 extending into the inner cavity of displacement slot 409, clamping block 412 extends out of mounting plate 1, first spring 413 is connected between clamping block 412 and mounting plate 1, the outer wall of clamping block 412 in mounting plate 1 is provided with sliding slot 414, the inside of clamping block 412 is slidably connected with sliding plate 415 extending into the inner cavity of sliding slot 414, the outer wall of clamping block 412 is rotatably connected with rotating block 419, one end of rotating block 419 is fixedly connected with second bevel gear 418, the inside of clamping block 412 is rotatably connected with first bevel gear 417 outside second bevel gear 418, one end of first bevel gear 417 is fixedly connected with second threaded rod 416, second threaded rod 416 penetrates sliding plate 415.

[0020] In the embodiment: when straightening ear plate 3, side plate 401 is placed on the outer wall of excavator bucket 2 and located at one side of ear plate 3, mounting plate 1 is placed in the inner cavity of excavator bucket 2, clamping plate 411 is located at one side of excavator bucket 2, then push clamping plate 411 to displace, clamping plate 411 drives displacement rod 410 to slide in displacement slot 409, clamping plate 411 is clamped on one side of excavator bucket 2 together with mounting plate 1 (to increase the firmness of clamping, anti-skid rubber pad can be arranged on the clamping surface opposite to clamping plate 411 and mounting plate 1).

[0021] At this time, the clamping block 412 is clamped with the displacement rod 410 by the elastic force of the first spring 413, thereby fixing the position between the clamping plate 411 and the mounting plate 1, and then the rotating block 419 is rotated, the rotating block 419 drives the second bevel gear 418 to rotate, the second bevel gear 418 drives the first bevel gear 417 to rotate, the first bevel gear 417 drives the second threaded rod 416 to rotate, the second threaded rod 416 drives the sliding plate 415 to displace, the sliding plate 415 slides in the sliding groove 414, and the sliding plate 415 slides to the end of the sliding groove 414 away from the displacement groove 409, so that the clamping block 412 cannot move away from the displacement groove 409, thereby reinforcing the position of the clamping plate 411.

[0022] After completion, the rotating column 404 can be rotated at this time, the rotating column 404 drives the first threaded rod 405 to rotate, the first threaded rod 405 drives the movable seat 403 to slide in the movable groove 402, the movable seat 403 drives the air cylinder 406 and the straightening plate 407 to displace synchronously, so that the outer side or the hollow part of the straightening plate 407 is aligned with the ear plate 3 and contacts the part to be corrected, the position of the positioning plate 408 is adjusted by cooperation of parts in the adjusting mechanism 5, the positioning plate 408 is towards the plane where the side of the ear plate 3 to be corrected is located, that is, the correct position of the side of the ear plate 3 towards the side of the positioning plate 408 after straightening. The air cylinder 406 is started, the air cylinder 406 drives the straightening plate 407 to displace, the straightening plate 407 extrudes and corrects the ear plate 3, until the ear plate 3 is aligned with the positioning plate 408, that is, the straightening operation is completed.

[0023] When the ear plate 3 is straightened inward, the outer side wall of one end of the straightening plate 407 contacts the outer side of the ear plate 3, and the ear plate 3 is deformed; when the ear plate 3 is straightened outward, the ear plate 3 is moved to the inner wall of the hollow part of the straightening plate 407, and the straightening plate 407 moves outward to drive the ear plate 3 to deform.

[0024] When the mounting plate 1 is disassembled, the rotating block 419 drives the sliding plate 415 to reset, so that the clamping block 412 can displace away from the displacement groove 409, the clamping block 412 is displaced to extrude the first spring 413, the clamping block 412 is separated from the displacement rod 410, the positioning of the clamping plate 411 is cancelled, and the clamping plate 411 is displaced away from the mounting plate 1, at this time, the mounting plate 1 can be moved out of the bucket 2.

[0025] Please refer to Figures 6 to 7The adjusting mechanism 5 comprises an adjusting groove 501 which is arranged in the interior of the movable seat 403, a fixing groove 502 is arranged on one side of the inner wall of the adjusting groove 501, an adjusting frame 503 is slidably connected to the inner wall of the adjusting groove 501, a fixing block 504 which extends to the outer wall of the adjusting frame 503 is slidably connected to the interior of the adjusting frame 503, a second spring 505 is connected between the fixing block 504 and the adjusting frame 503, an adjusting column 508 is rotatably connected to the outer wall of the adjusting frame 503, a third threaded rod 507 is fixedly connected to the bottom end of the adjusting column 508, a pressing rod 506 is connected to the outer wall of the third threaded rod 507, the pressing rod 506 is slidably connected to the interior of the adjusting frame 503 and is located above the fixing block 504, a horizontal groove 509 is arranged at the top of the adjusting frame 503, a positioning plate 408 is slidably connected to the inner wall of the horizontal groove 509, a tooth block 510 is fixedly connected to the top end of the positioning plate 408, a tooth plate 511 is slidably connected to the interior of the adjusting frame 503 and is located above the tooth block 510, and the third threaded rod 507 penetrates through the tooth plate 511.

[0026] In this embodiment, when the position of the positioning plate 408 is adjusted, the positioning plate 408 is pushed to slide in the horizontal groove 509, and the positioning plate 408 is moved horizontally; the adjusting frame 503 is pushed to slide in the adjusting groove 501, and the positioning plate 408 is moved vertically, so that the position of the positioning plate 408 is adjusted. Then the adjusting column 508 is rotated, the adjusting column 508 drives the third threaded rod 507 to rotate, the third threaded rod 507 drives the tooth plate 511 and the pressing rod 506 to synchronously displace, the pressing rod 506 moves downward to push the fixing block 504 to displace, the fixing block 504 is inserted into the fixing groove 502 to fix the adjusting frame 503 in the adjusting groove 501; the tooth plate 511 is displaced downward to contact the tooth block 510, the tooth plate 511 is engaged with the tooth block 510 to fix the positioning plate 408 in the horizontal groove 509, so that the position of the positioning plate 408 is fixed, and the position of the positioning plate 408 is conveniently adjusted.

[0027] Please refer to Figures 2 to 5 The inner wall of the displacement groove 409 is in close contact with the outer wall of the displacement rod 410, the outer wall of the displacement rod 410 is provided with a ratchet, and one end of the clamping block 412 is engaged with the ratchet.

[0028] In this embodiment, the clamping plate 411 is pushed to displace, the clamping plate 411 drives the displacement rod 410 to slide in the displacement groove 409, the clamping plate 411 is clamped on one side of the excavator 2 together with the mounting plate 1, at this time the clamping block 412 is engaged with the displacement rod 410 under the elastic force of the first spring 413, so that the position between the clamping plate 411 and the mounting plate 1 is fixed.

[0029] Please refer to Figures 2 to 5The outer wall of the sliding plate 415 is attached to the inner wall of the sliding groove 414, the second bevel gear 418 is engaged with the first bevel gear 417, the outer wall of the sliding plate 415 is provided with a second threaded hole, and the second threaded hole is matched with the second threaded rod 416.

[0030] In the embodiment, the rotating block 419 is rotated, the rotating block 419 drives the second bevel gear 418 to rotate, the second bevel gear 418 drives the first bevel gear 417 to rotate, the first bevel gear 417 drives the second threaded rod 416 to rotate, and the second threaded rod 416 drives the sliding plate 415 to displace.

[0031] Please refer to Figures 2 to 5 The outer wall of the movable seat 403 is attached to the inner wall of the movable groove 402, the outer wall of the movable seat 403 is provided with a first threaded hole, and the first threaded hole is matched with the first threaded rod 405.

[0032] In the embodiment, the rotating column 404 is rotated, the rotating column 404 drives the first threaded rod 405 to rotate, and the first threaded rod 405 drives the movable seat 403 to slide in the movable groove 402.

[0033] Please refer to Figures 6 to 7 The inner wall of the horizontal groove 509 is attached to the outer wall of the positioning plate 408, the inner wall of the horizontal groove 509 is fixedly connected with a limiting rod 6 penetrating through the positioning plate 408, and the outer wall of the positioning plate 408 is provided with a limiting hole capable of sliding along the limiting rod 6.

[0034] In the embodiment, the positioning plate 408 is pushed to slide in the horizontal groove 509, at this time, the limiting rod 6 slides in the limiting hole, and the movement of the positioning plate 408 is limited.

[0035] Please refer to Figures 6 to 7 The inner wall of the adjusting groove 501 is attached to the bottom outer wall of the adjusting frame 503, one end of the outer wall of the fixed block 504 is attached to the inner wall of the fixed groove 502, the top end of the fixed block 504 is provided with an inclined surface, and the bottom end of the pressing rod 506 is located above the inclined surface.

[0036] In the embodiment, the adjusting frame 503 is pushed to slide in the adjusting groove 501, the positioning plate 408 is vertically moved, and the position of the positioning plate 408 is adjusted; the pressing rod 506 moves downward to push the fixed block 504 to displace, the fixed block 504 is inserted into the fixed groove 502 to fix the adjusting frame 503 in the adjusting groove 501.

[0037] Please refer to Figures 6 to 7The bottom end of the toothed plate 511 is provided with a tooth groove which is engaged with the tooth block 510. The outer wall of the toothed plate 511 and the lower pressing rod 506 are both provided with a third threaded hole which is matched with a third threaded rod 507.

[0038] In the embodiment, the adjusting column 508 is rotated to drive the third threaded rod 507 to rotate, and the third threaded rod 507 drives the toothed plate 511 and the lower pressing rod 506 to synchronously displace. The toothed plate 511 is in contact with the tooth block 510 after downward displacement, and the toothed plate 511 is engaged with the tooth block 510 to fix the positioning plate 408 in the horizontal groove 509, thereby fixing the position of the positioning plate 408.

[0039] It should be noted that the device is suitable for the correction operation of the small ear plate with small thickness on the small excavator. The ear plate of this type is easy to deform due to uneven force. The device is not suitable for the correction operation of the ear plate with large thickness on the large excavator. The ear plate of this type is not easy to deform, and the maintenance application scene of the ear plate correction is far less than that of the small ear plate on the small excavator.

[0040] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dipper ear straightening device comprising mounting plates (1) arranged symmetrically, characterized in that, The installation plate (1) is straightened by the straightening mechanism (4) on the ear plate (3) of the excavator (2), the straightening mechanism (4) includes the side plate (401), the side plate (401) is fixedly connected to one side of the installation plate (1), the outer wall of the side plate (401) is provided with the movable groove (402), the inner wall of the movable groove (402) is slidably connected with the movable seat (403), one end of the side plate (401) is rotatably connected with the rotating column (404), the outer wall of the rotating column (404) is fixedly connected with the first threaded rod (405), the first threaded rod (405) penetrates through the movable seat (403), the outer wall of the movable seat (403) is provided with the air cylinder (406), the output end of the air cylinder (406) is fixedly connected with the straightening plate (407) which is in the shape of "∩", one end of the straightening plate (407) is provided with the positioning plate (408), the position of the positioning plate (408) is adjusted by the adjusting mechanism (5).

2. A dipper lip straightening device according to claim 1, wherein, The straightening mechanism (4) further includes the displacement slot (409), the displacement slot (409) is formed in the outer wall of the installation plate (1), the inner wall of the displacement slot (409) is slidably connected with the displacement rod (410), the outer wall of the displacement rod (410) is fixedly connected with the clamping plate (411), the inside of the installation plate (1) is slidably connected with the clamping block (412) extending into the inner cavity of the displacement slot (409), the clamping block (412) extends out of the installation plate (1), the first spring (413) is connected between the clamping block (412) and the installation plate (1), the inner wall of the installation plate (1) is provided with the sliding groove (414) at the outer wall of the clamping block (412), the inside of the clamping block (412) is slidably connected with the sliding plate (415) extending into the inner cavity of the sliding groove (414), the outer wall of the clamping block (412) is rotatably connected with the rotating block (419), one end of the rotating block (419) is fixedly connected with the second bevel gear (418), the inside of the clamping block (412) is rotatably connected with the first bevel gear (417) at the outer wall of the second bevel gear (418), one end of the first bevel gear (417) is fixedly connected with the second threaded rod (416), and the second threaded rod (416) penetrates through the sliding plate (415).

3. A dipper ear plate straightening device according to claim 2, wherein, The adjusting mechanism (5) comprises an adjusting groove (501) which is arranged in the interior of the movable seat (403), a fixing groove (502) is arranged on one side of the inner wall of the adjusting groove (501), the inner wall of the adjusting groove (501) is slidably connected with an adjusting frame (503), the interior of the adjusting frame (503) is slidably connected with a fixing block (504) which extends to the outer wall of the adjusting frame (503), the second spring (505) is connected between the fixing block (504) and the adjusting frame (503), the outer wall of the adjusting frame (503) is rotatably connected with an adjusting column (508), the bottom end of the adjusting column (508) is fixedly connected with a third threaded rod (507), the outer wall of the third threaded rod (507) is connected with a pressing rod (506), the pressing rod (506) is slidably connected in the interior of the adjusting frame (503) and is located above the fixing block (504), the top and bottom ends of the adjusting frame (503) are provided with a horizontal groove (509), the positioning plate (408) is slidably connected with the inner wall of the horizontal groove (509), the top end of the positioning plate (408) is fixedly connected with a tooth block (510), the interior of the adjusting frame (503) is slidably connected with a toothed plate (511) above the tooth block (510), and the third threaded rod (507) penetrates through the toothed plate (511).

4. A dipper lip straightening device according to claim 2, wherein, The inner wall of the displacement groove (409) is matched with the outer wall of the displacement rod (410), the outer wall of the displacement rod (410) is provided with a ratchet, and one end of the clamping block (412) is clamped with the ratchet.

5. A dipper ear plate straightening device according to claim 2, wherein, The outer wall of the sliding plate (415) is matched with the inner wall of the sliding groove (414), and the second bevel gear (418) is engaged with the first bevel gear (417).

6. A dipper ear plate straightening device according to claim 2, wherein, The outer wall of the sliding plate (415) is provided with a second threaded hole matched with the second threaded rod (416).

7. A dipper ear plate straightening device according to claim 2 wherein, The outer wall of the movable seat (403) is matched with the inner wall of the movable groove (402), the outer wall of the movable seat (403) is provided with a first threaded hole matched with the first threaded rod (405).

8. A dipper ear plate straightening device according to claim 3 wherein, The inner wall of the horizontal groove (509) is matched with the outer wall of the positioning plate (408), the inner wall of the horizontal groove (509) is fixedly connected with a limiting rod (6) penetrating through the positioning plate (408), and the outer wall of the positioning plate (408) is provided with a limiting hole capable of sliding along the limiting rod (6).

9. A dipper ear plate straightening device according to claim 3 wherein, The inner wall of the adjusting groove (501) is matched with the bottom outer wall of the adjusting frame (503), one end of the outer wall of the fixing block (504) is matched with the inner wall of the fixing groove (502), the top end of the fixing block (504) is provided with an inclined surface, and the bottom end of the pressing rod (506) is located above the inclined surface.

10. The ear straightening device of claim 3, wherein, The bottom end of the toothed plate (511) is provided with a tooth groove which is clamped with the tooth block (510), the outer wall of the toothed plate (511) and the lower pressing rod (506) are both provided with a third threaded hole which is matched with the third threaded rod (507).

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