Olecranon scissors with replaceable jaws

Abstract

The invention relates to the technical field of olecranon shears, and discloses a replaceable jaw olecranon shear which comprises a mounting base, a shear head assembly is inserted into the right end of the mounting base, a hydraulic cylinder is hinged to the left side of the top of the shear head assembly, a mounting shaft is hinged to the end, away from the shear head assembly, of the hydraulic cylinder, and the mounting shaft is fixedly mounted on the mounting base through a bolt. A clamping assembly is arranged in the mounting base, a rotating limiting piece is arranged on the surface of the clamping assembly, a supporting assembly is arranged on the mounting base, and the supporting assembly is attached to the lower surface of the hydraulic cylinder. A lower shearing plate is inserted into the right end of a groove-shaped plate, a rotating shaft is inserted into a U-shaped groove from top to bottom, then a rotating handle is rotated, and a driving shaft moves rightwards while rotating until a left baffle is attached to the left side of a reinforcing plate, so that installation of the shearing head assembly is completed, the steps are operated in the same way and in the reverse direction, and the shearing head assembly can be disassembled; therefore, the purposes of conveniently replacing the shear head and adapting to various working conditions are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hawkbill scissors, in particular to hawkbill scissors with replaceable jaws. Background Art

[0002] The Eagle's Beak Shear is a hydraulic attachment mounted on the front end of an excavator. Named for its resemblance to an eagle's beak, it utilizes a high-strength alloy steel blade and a closed steel plate structure, offering high wear and impact resistance, and capable of withstanding high-intensity shearing operations. The excavator's hydraulic system drives the cylinder to extend and retract, opening and closing the blade, enabling efficient shearing and disassembly of metal materials.

[0003] The existing hawkbill shears can generally only meet the working conditions of scrap steel and metal processing. In actual operation, it is necessary to replace the hawkbill shears with rail shear heads, crushing shear heads, and grabbing heads. During the replacement process, multiple people are required to cooperate, and the operation process is relatively complicated, so further improvements can be made. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a pair of replaceable jaws hawkbill shears, which has the advantages of easy replacement of shear heads and adaptability to various working conditions, and solves the problem that hawkbill shears have a single function and are troublesome to replace.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose of facilitating the replacement of shearing heads and adapting to various working conditions, the present invention provides the following technical solution: a replaceable jaw hawkbill shears, comprising a mounting seat, a shearing head assembly being inserted into the right end of the mounting seat, a hydraulic cylinder being hinged to the left side of the top of the shearing head assembly, and a mounting shaft being hinged to the end of the hydraulic cylinder away from the shearing head assembly, the mounting shaft being fixedly mounted on the mounting seat by bolts, a clamping assembly being arranged inside the mounting seat, a rotation limiter being arranged on the surface of the clamping assembly, a support assembly being arranged on the mounting seat, and the support assembly being affixed to the lower surface of the hydraulic cylinder.

[0008] Preferably, the mounting seat includes a docking seat, and a grooved plate is rotatably connected to the right side of the docking seat, a U-shaped groove is provided on the top of the right end of the grooved plate, a mounting hole is provided on the left front side of the grooved plate, the mounting shaft is inserted into the mounting hole, and a horizontal groove and a vertical groove are provided on the front side of the right half of the grooved plate.

[0009] Preferably, the shear head assembly includes two lower shear plates and two upper shear plates, the lower shear plates and the upper shear plates are rotatably connected via a rotating shaft, a reinforcement plate is welded between the bottoms of the two lower shear plates, a connecting rod is fixedly installed between the left ends of the two upper shear plates, and the right end of the hydraulic cylinder is hinged on the connecting rod.

[0010] The left and right sides of described sliding panel also are provided with an interlocking structure, and the interlocking structure of described sliding panel withstands on the back cam of being wound on the left side of described sliding panel, and the left and right sides of described sliding panel withstands on the back cam of being wound on the left side of described sliding panel.

[0011] Preferably, the rotation limiter includes a friction disk fixedly mounted at the center of the second front side of the bevel gear, a V-shaped groove is provided in an array on the circumferential surface of the friction disk, a collar is provided on the outer side of the friction disk, the collar is fixedly mounted on the front side of the groove plate, a sliding groove is provided in an array on the inner wall of the collar, a limiting plate is slidably connected in the sliding groove, one end of the limiting plate is inserted in the V-shaped groove, and a spring is fixedly mounted between the other end of the limiting plate and the inner wall of the sliding groove.

[0012] Preferably, the support assembly includes support shaft one and support shaft two, support shaft one is slidably connected in the vertical groove, support shaft two is slidably connected in the horizontal groove, an L-shaped plate is fixedly installed at the bottom of support shaft two, and the right end of the L-shaped plate is fixedly installed on the left side of the left baffle.

[0013] Preferably, both ends of the support shaft 2 are fixedly mounted with a rack plate 1, and both ends of the support shaft 1 are fixedly mounted with a rack plate 2, and a linear groove is provided on both the rack plate 1 and the rack plate 2; a support column 1 is inserted into the rack plate 1, and a support column 2 is inserted into the rack plate 2, and the support column 1 and the support column 2 are both fixedly mounted on the grooved plate, and the front side of the grooved plate is rotatably connected to the transmission gear, the rack plate 1 is engaged with the top of the transmission gear, the rack plate 2 is attached to the right side of the transmission gear, and the rack plate 2 and the rack plate 1 are staggered front and back.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the present invention provides replaceable jaw hawkbill scissors, which have the following beneficial effects:

[0016] 1. The replaceable jaw hawkbill shears are made by inserting the lower shear plate into the right end of the groove plate, inserting the rotating shaft from top to bottom into the U-shaped groove, and then deflecting the upper shear plate so that the upper shear plate fits on the top of support shaft one and the hydraulic cylinder fits on the top of support shaft two. Then, the mounting shaft is inserted into the mounting hole and the left end of the hydraulic cylinder, and then the mounting shaft is fixed to the groove plate with bolts; then the handle is turned to drive bevel gear two to rotate, which drives bevel gear one to rotate, so that the drive shaft and the convex strip rotate together with bevel gear one. Then, through the meshing action of the drive shaft and the nut, the drive shaft rotates and moves to the right until the left baffle fits on the left side of the reinforcement plate and the upper splint fits on the top of the reinforcement plate; thus completing the installation of the shear head assembly. Similarly, the shear head assembly can be disassembled by reversing the above steps; thereby achieving the purpose of facilitating the replacement of shear heads and adapting to various working conditions;

[0017] 2. After the handle of the replaceable jaw hawkbill shears is rotated, the elasticity of the spring causes the limit plate to be inserted into the V-shaped groove, inhibiting the rotation of the friction disk, thereby allowing the left baffle and the upper clamping plate to maintain the limiting effect on the shear head assembly, so that the installation of the shear head assembly remains stable;

[0018] 3. When the left baffle moves to the right, the replaceable jaw hawkbill shears drives the support shaft 2 to move to the right through the L-shaped plate to prevent the support shaft 2 from affecting the running path of the hydraulic cylinder; when the support shaft 2 moves to the right, the rack plate 1 drives the transmission gear to rotate, driving the rack plate 2 to move downward, so that the support shaft 1 slides downward along the vertical groove to avoid the moving path of the upper shear plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the replaceable jaw hawkbill scissors proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional cross-section structure of the replaceable jaw hawkbill scissors proposed in the present invention;

[0021] Figure 3 This is a structural schematic diagram of the replaceable jaw hawkbill shears proposed in the present invention with the mounting base and shear head assembly separated;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping assembly of the replaceable jaw hawkbill shears proposed in the present invention;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotation limiter of the replaceable jaw hawkbill scissors proposed by the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the support assembly of the replaceable jaw hawkbill scissors proposed in the present invention.

[0025] In the figure: 100, mounting seat; 200, shear head assembly; 300, hydraulic cylinder; 400, mounting shaft; 500, clamping assembly; 600, rotation limiter; 700, support assembly;

[0026] 101, docking seat; 102, grooved plate; 103, U-shaped groove; 104, mounting hole; 105, horizontal groove; 106, vertical groove;

[0027] 201, lower shear plate; 202, upper shear plate; 203, rotating shaft; 204, reinforcing plate; 205, connecting rod;

[0028] 501, left baffle; 502, upper clamping plate; 503, guide rod; 504, drive shaft; 505, lug 1; 506, nut; 507, rib; 508, lug 2; 509, bevel gear 1; 510, bevel gear 2; 511, handle;

[0029] 601, friction disc; 602, V-groove; 603, collar; 604, slide; 605, limit plate; 606, spring;

[0030] 701. Support shaft 1; 702. Support shaft 2; 703. L-shaped plate; 704. Rack plate 1; 705. Support column 1; 706. Rack plate 2; 707. Support column 2; 708. Transmission gear. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 2 The replaceable jaw hawkbill shears include a mounting base 100, a shearing head assembly 200 is inserted into the right end of the mounting base 100, a hydraulic cylinder 300 is hinged to the left side of the top of the shearing head assembly 200, and a mounting shaft 400 is hinged at one end of the hydraulic cylinder 300 away from the shearing head assembly 200. The mounting shaft 400 is fixed to the mounting base 100 by bolts, and a clamping assembly 500 is provided inside the mounting base 100. A rotation limiter 600 is provided on the surface of the clamping assembly 500, and a support assembly 700 is provided on the mounting base 100, and the support assembly 700 is attached to the lower surface of the hydraulic cylinder 300.

[0033] See also Figure 3The mounting base 100 includes a docking base 101, with a trough plate 102 pivotally connected to the right side of the docking base 101. A U-shaped slot 103 is defined at the top right end of the trough plate 102. A mounting hole 104 is defined through the left front side of the trough plate 102. The mounting shaft 400 is inserted into the mounting hole 104 and bolted to the trough plate 102. A horizontal slot 105 and a vertical slot 106 are defined through the front right half of the trough plate 102. The horizontal slot 105 is located to the left of the bottom end of the vertical slot 106. The shearing head assembly 200 includes two lower shear plates 201 and two upper shear plates 202. The lower and upper shear plates 201 and 202 are pivotally connected via a rotating shaft 203. A reinforcement plate 204 is welded between the bottoms of the two lower shear plates 201. A connecting rod 205 is fixedly mounted between the left ends of the two upper shear plates 202. The right end of the hydraulic cylinder 300 is hinged to the connecting rod 205. Thus, the two upper shearing plates 202 and the connecting rod 205 form the upper half of the shearing head, and the two lower shearing plates 201 and the reinforcing plate 204 form the lower half of the shearing head. The upper and lower halves of the shearing head are hinged together by the rotating shaft 203. The rotating shaft 203 is inserted into the U-shaped groove 103 from the upper side, and the reinforcing plate 204 is attached to the bottom wall of the groove plate 102.

[0034] See also Figure 4 The clamping assembly 500 includes a left baffle 501 slidably connected to the bottom wall of the trough plate 102. An upper clamping plate 502 is fixedly installed on the right side of the left baffle 501. The left baffle 501 is attached to the left side of the reinforcement plate 204, and the upper clamping plate 502 is attached to the top of the reinforcement plate 204, thereby preventing the shearing head assembly 200 from detaching from the trough plate 102. A guide rod 503 is fixedly installed on the left side of the left baffle 501. A drive shaft 504 is rotatably connected to the left side of the left baffle 501. Lugs 505 are fixedly installed on the front and rear side walls of the trough plate 102. The lugs 505 and the drive shaft 504 respectively penetrate and are slidably connected to the two lugs 505.

[0035] The right half of the drive shaft 504 is provided with a threaded groove, which is threadedly connected to a nut 506. Nut 506 is fixedly mounted on lug 1 505. A protrusion 507 is fixedly mounted on the circumference of the left half of the drive shaft 504. A second lug 508 is fixedly mounted on the inner wall of the front side of the grooved plate 102. A bevel gear 1 509 is rotatably connected to lug 2 508. The drive shaft 504 and protrusion 507 are slidably connected to the center of bevel gear 1 509. A socket is provided at the center of bevel gear 1 509. The cross-sections of the drive shaft 504 and protrusion 507 are the same shape as the opening of the socket. A second bevel gear 510 meshes with the front side of bevel gear 1 509. Bevel gear 2 510 is rotatably connected to the grooved plate 102. A handle 511 is fixedly mounted at the center of the front side of bevel gear 2 510.

[0036] By rotating the handle 511, the second bevel gear 510 is rotated, which in turn drives the first bevel gear 509, thereby rotating the drive shaft 504 and the protruding strip 507 along with the first bevel gear 509. The drive shaft 504 then meshes with the nut 506, causing the drive shaft 504 to rotate and move rightward until the left baffle 501 is attached to the left side of the reinforcement plate 204 and the upper clamping plate 502 is attached to the top of the reinforcement plate 204.

[0037] See also Figure 5 The rotation limiter 600 includes a friction disc 601 fixedly mounted at the center of the front side of bevel gear 2 510. The friction disc 601, bevel gear 2 510, and handle 511 are coaxially fixed. The circumferential surface of the friction disc 601 is defined by an array of V-shaped grooves 602. A collar 603 is sleeved around the outer surface of the friction disc 601 and fixedly mounted on the front side of the grooved plate 102. The inner wall of the collar 603 is defined by an array of sliding grooves 604. A limiting plate 605 is slidably connected within the sliding grooves 604. One end of the limiting plate 605 is inserted into the V-shaped groove 602, and a spring 606 is fixedly mounted between the other end of the limiting plate 605 and the inner wall of the sliding groove 604. The elasticity of the spring 606 keeps the limiting plate 605 inserted into the V-shaped groove 602, inhibiting the rotation of the friction disc 601.

[0038] See also Figure 6 The support assembly 700 includes a first support shaft 701 and a second support shaft 702. The first support shaft 701 is slidably connected within the vertical slot 106, and the second support shaft 702 is slidably connected within the horizontal slot 105. An L-shaped plate 703 is fixedly mounted on the bottom of the second support shaft 702, and the right end of the L-shaped plate 703 is fixedly mounted on the left side of the left baffle 501. Initially, the second support shaft 702 is located at the leftmost end of the horizontal slot 105, and the first support shaft 701 is located at the topmost end of the vertical slot 106. By inserting the rotating shaft 203 into the U-shaped slot 103, the first support shaft 701 is supported on the bottom left end of the upper shear plate 202, and the second support shaft 702 is supported on the bottom of the hydraulic cylinder 300, so that the mounting shaft 400 is aligned with the bottom end of the hydraulic cylinder 300.

[0039] Rack plates 1 704 are fixedly installed at both ends of support shaft 2 702, and rack plates 2 706 are fixedly installed at both ends of support shaft 1 701. Linear grooves are penetrated on rack plate 1 704 and rack plate 2 706; support column 1 705 is inserted into rack plate 1 704, and support column 2 707 is inserted into rack plate 2 706. Support column 1 705 and support column 2 707 are both fixedly installed on the groove plate 102, and the front side of the groove plate 102 is rotatably connected to the transmission gear 708. Rack plate 1 704 is engaged with the top of the transmission gear 708, and rack plate 2 706 is attached to the right side of the transmission gear 708. Rack plate 2 706 and rack plate 1 704 are staggered front and back. Therefore, when support shaft 2 702 moves to the right, rack plate 1 704 drives transmission gear 708 to rotate, thereby driving rack plate 2 706 to move downward, and support shaft 1 701 to move downward, so that support shaft 2 702 and support shaft 1 701 avoid hydraulic cylinder 300 and upper shear plate 202 respectively.

[0040] When in use, the lower shear plate 201 is inserted into the right end of the trough plate 102, and the rotating shaft 203 is inserted from top to bottom into the U-shaped groove 103. Then, the upper shear plate 202 is deflected so that the upper shear plate 202 fits on the top of the support shaft 1 701, and the hydraulic cylinder 300 fits on the top of the support shaft 2 702. Then, the mounting shaft 400 is inserted into the mounting hole 104 and the left end of the hydraulic cylinder 300, and then the mounting shaft 400 is fixed to the trough plate 102 with bolts.

[0041] Then, the handle 511 is rotated, driving the second bevel gear 510 to rotate, and the first bevel gear 509 to rotate, so that the drive shaft 504 and the protruding strip 507 rotate along with the bevel gear 509. The drive shaft 504 then meshes with the nut 506, causing the drive shaft 504 to rotate and move rightward until the left baffle 501 abuts against the left side of the reinforcement plate 204 and the upper clamping plate 502 abuts against the top of the reinforcement plate 204. This completes the installation of the shearing head assembly 200. Similarly, the shearing head assembly 200 can be removed by reversing the above steps.

[0042] After the handle 511 is rotated, the spring 606 causes the limiting plate 605 to be inserted into the V-shaped groove 602, thereby inhibiting the friction plate 601 from rotating. This allows the left baffle 501 and the upper clamping plate 502 to maintain their limiting effect on the shearing head assembly 200, ensuring that the installation of the shearing head assembly 200 remains stable.

[0043] When the left baffle 501 moves to the right, the L-shaped plate 703 drives the support shaft 2 702 to move to the right to prevent the support shaft 2 702 from affecting the running path of the hydraulic cylinder 300; when the support shaft 2 702 moves to the right, the rack plate 1 704 drives the transmission gear 708 to rotate, driving the rack plate 2 706 to move downward, so that the support shaft 1 701 slides downward along the vertical groove 106, avoiding the moving path of the upper shear plate 202.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A replaceable jaw hawkbill shears, comprising a mounting base (100), a shearing head assembly (200) being plugged into the right end of the mounting base (100), a hydraulic cylinder (300) being hinged on the left side of the top of the shearing head assembly (200), a mounting shaft (400) being hinged on one end of the hydraulic cylinder (300) away from the shearing head assembly (200), the mounting shaft (400) being fixedly mounted on the mounting base (100) by bolts, characterized in that: A clamping assembly (500) is provided inside the mounting seat (100), a rotation limiting member (600) is provided on the surface of the clamping assembly (500), and a supporting assembly (700) is provided on the mounting seat (100), and the supporting assembly (700) is attached to the lower surface of the hydraulic cylinder (300).

2. The replaceable jaw hawkbill scissors according to claim 1, characterized in that: The mounting seat (100) includes a docking seat (101), the right side of the docking seat (101) is rotatably connected to a grooved plate (102), the top of the right end of the grooved plate (102) is provided with a U-shaped groove (103), the left front side of the grooved plate (102) is penetrated by a mounting hole (104), the mounting shaft (400) is inserted into the mounting hole (104), and the front side of the right half of the grooved plate (102) is penetrated by a horizontal groove (105) and a vertical groove (106).

3. The replaceable jaw hawkbill scissors according to claim 1, characterized in that: The shear head assembly (200) comprises two lower shear plates (201) and two upper shear plates (202); the lower shear plates (201) and the upper shear plates (202) are rotatably connected via a rotating shaft (203); a reinforcing plate (204) is welded between the bottoms of the two lower shear plates (201); a connecting rod (205) is fixedly installed between the left ends of the two upper shear plates (202); and the right end of the hydraulic cylinder (300) is hinged on the connecting rod (205).

4. The replaceable jaw hawkbill scissors according to claim 1, characterized in that: The clamping assembly (500) includes a left baffle (501) slidably connected to the bottom wall of the groove plate (102), an upper clamping plate (502) is fixedly installed on the right side of the left baffle (501), the left baffle (501) is attached to the left side of the reinforcement plate (204), and the upper clamping plate (502) is attached to the top of the reinforcement plate (204), a guide rod (503) is fixedly installed on the left side of the left baffle (501), and a drive shaft (504) is rotatably connected to the left side of the left baffle (501), and a lug (505) is fixedly installed on the front and rear side walls of the groove plate (102), and the lug (505) and the drive shaft (504) are respectively penetrated and slidably connected to the two lugs (505); The right half of the drive shaft (504) is provided with a threaded groove, and the right half of the drive shaft (504) is threadedly connected with a nut (506), and the nut (506) is fixedly installed on the convex lug (505). The left half of the drive shaft (504) is fixedly installed with a convex strip (507), and the inner wall of the front side of the groove plate (102) is fixedly installed with a convex lug (508). The convex lug (508) is rotatably connected with a bevel gear (509) passing through. The drive shaft (504) and the convex strip (507) are slidably connected at the center of the bevel gear (509). The front side of the bevel gear (509) is meshed with a bevel gear (510), and the bevel gear (510) is rotatably connected to the groove plate (102). A rotating handle (511) is fixedly installed at the center of the front side of the bevel gear (510).

5. The replaceable jaw hawkbill scissors according to claim 1, characterized in that: The rotation limiting member (600) includes a friction disk (601) fixedly mounted at the center of the front side of the bevel gear 2 (510), the circumferential surface of the friction disk (601) is provided with a V-shaped groove (602), the outer side of the friction disk (601) is provided with a sleeve (603), the sleeve (603) is fixedly mounted on the front side of the groove plate (102), the inner wall of the sleeve (603) is provided with a sliding groove (604), a limiting plate (605) is slidably connected in the sliding groove (604), one end of the limiting plate (605) is inserted into the V-shaped groove (602), and a spring (606) is fixedly mounted between the other end of the limiting plate (605) and the inner wall of the sliding groove (604).

6. The replaceable jaw hawkbill scissors according to claim 1, characterized in that: The support assembly (700) includes a support shaft 1 (701) and a support shaft 2 (702), wherein the support shaft 1 (701) is slidably connected in the vertical groove (106), and the support shaft 2 (702) is slidably connected in the horizontal groove (105), and an L-shaped plate (703) is fixedly installed at the bottom of the support shaft 2 (702), and the right end of the L-shaped plate (703) is fixedly installed on the left side of the left baffle (501).

7. The replaceable jaw hawkbill scissors according to claim 6, characterized in that: Both ends of the support shaft 2 (702) are fixedly mounted with a rack plate 1 (704), and both ends of the support shaft 1 (701) are fixedly mounted with a rack plate 2 (706), and both the rack plate 1 (704) and the rack plate 2 (706) are provided with a straight groove extending therethrough; The rack plate 1 (704) is plugged with a support column 1 (705), and the rack plate 2 (706) is plugged with a support column 2 (707). The support column 1 (705) and the support column 2 (707) are both fixedly mounted on the groove plate (102). The front side of the groove plate (102) is rotatably connected to a transmission gear (708). The rack plate 1 (704) is engaged with the top of the transmission gear (708), and the rack plate 2 (706) is attached to the right side of the transmission gear (708). The rack plate 2 (706) and the rack plate 1 (704) are staggered front and back.

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