Hoisting clamp for marine piston pin

Abstract

The utility model relates to the technical field of hoisting, and provides a hoisting clamp for a marine piston pin. Comprising a lifting beam, a lifting lug, a sliding groove plate, a first upper force arm, a second upper force arm, a first handle and a first lower force arm, wherein the lifting lug is mounted on the upper side of the lifting beam; the sliding groove plate is mounted on one side of the lifting beam; the first upper force arm and the second upper force arm are rotatably connected to the lifting beam; the first upper force arm is rotatably connected to the sliding groove plate, the second lower force arm is rotatably connected to the second upper force arm, the second handle is connected with the first lower force arm and the second lower force arm and slidably mounted on the sliding groove plate, the first clamping piece is mounted on the first lower force arm, and the second clamping piece is mounted on the second lower force arm.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting, in particular to a hoisting fixture for a marine piston pin. Background Art

[0002] In the shipbuilding industry, a piston pin with a diameter of 260 mm and a length of 370 mm is used in an engine. When processing such marine piston pins, the workpieces need to be hoisted up and down between various processes. During rough machining, a hoisting belt or a magnet is used in cooperation with a crane to complete the hoisting. However, during finish machining, when using a hoisting belt to hoist the machined marine piston pin, the oil stain on the hoisting belt will contaminate the surface of the just-machined piston pin. When a piece of paper is placed between the hoisting belt and the piston pin, it is not only easy to slip but also has potential safety hazards, and placing the paper is also time-consuming and affects production efficiency. Moreover, during the finish machining stage, the piston pin is not allowed to be magnetic, so using a hoisting belt and a magnet to complete the loading and unloading of the workpiece does not meet the processing requirements. In addition, due to the small volume and large weight of the piston pin, it cannot be transferred only by manual labor. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a hoisting fixture for a marine piston pin that can solve or at least mitigate the above problems, so as to hoist the marine piston pin safely and efficiently.

[0004] The technical solution provided by the utility model is: a hoisting fixture for a marine piston pin, which includes a lifting beam, a lifting ear installed on the upper side of the lifting beam, a chute plate installed on one side of the lifting beam, a first upper force arm and a second upper force arm rotatably connected to the lifting beam, a first handle installed on the chute plate, a first lower force arm rotatably connected to the first upper force arm, a second lower force arm rotatably connected to the second upper force arm, a second handle connected to the first lower force arm and the second lower force arm and slidably installed on the chute plate, a first clamping member installed on the first lower force arm, and a second clamping member installed on the second lower force arm.

[0005] In some embodiments, the lifting beam is in an inverted U shape, and a first fixing hole is opened at the top of the U-shaped lifting beam, and the lifting ear is installed in the first fixing hole.

[0006] In some embodiments, a first through hole is provided on the first leg of the U-shaped lifting beam, and a second through hole is provided on the second leg, and the first through hole and the second through hole are arranged opposite to each other; a connecting pin sequentially passes through the chute plate, the second through hole, the second upper force arm, the first upper force arm and the first through hole to fix the chute plate on one side of the second leg, and rotatably install the first upper force arm and the second upper force arm on the lifting beam.

[0007] In some embodiments, the chute plate is strip-shaped. A plurality of first mounting holes are provided at one end of the chute plate adjacent to the suspension. The connecting pin passes through the first mounting holes to mount the chute plate on the suspension beam; a second mounting hole is provided at the middle position of the chute plate; a chute is provided at one end of the chute plate away from the suspension beam; the first handle is mounted in the second mounting hole and is between the first upper force arm and the second upper force arm.

[0008] In some embodiments, the first upper force arm is rod-shaped. A first connection hole is provided at one end of the first upper force arm adjacent to the suspension beam, and a second connection hole is provided at the other end away from the suspension beam; the second upper force arm is rod-shaped. A third connection hole is provided at one end of the second upper force arm adjacent to the suspension beam, and a fourth connection hole is provided at the other end away from the suspension beam; the connecting pin passes through the first connection hole and the third connection hole.

[0009] In some embodiments, the first lower force arm is L-shaped and includes a first horizontal portion and a first vertical portion; the second lower force arm is L-shaped and includes a second horizontal portion and a second vertical portion; the first horizontal portion and the second horizontal portion are cross-arranged, and the first vertical portion and the second vertical portion are arranged opposite to each other.

[0010] In some embodiments, a fifth connection hole is provided at one end of the first horizontal portion away from the first vertical portion. A first pin passes through the second connection hole and the fifth connection hole to hinge the first lower force arm to the first upper force arm; a sixth connection hole is provided at the middle position of the first horizontal portion.

[0011] In some embodiments, a seventh connection hole is provided at one end of the second horizontal portion away from the second vertical portion. A second pin passes through the fourth connection hole and the seventh connection hole to hinge the second lower force arm to the second upper force arm; an eighth connection hole is provided at the middle position of the second horizontal portion; the second handle passes through the sixth connection hole and the eighth connection hole in sequence and is slidably connected to the chute.

[0012] In some embodiments, the second handle includes a handle portion and a connecting column provided at one end of the handle portion; the handle portion and the connecting column are respectively cylindrical, and the diameter of the connecting column is smaller than the diameter of the handle portion; the connecting column passes through the sixth connection hole, the eighth connection hole and the chute in sequence. The end of the connecting column away from the handle portion protrudes from the chute, and an external thread is provided at this end. A connecting nut is connected to the external thread of the connecting column. The first lower force arm, the second lower force arm and the chute plate are located between the connecting nut and the handle portion.

[0013] In some embodiments, the first clamping member is mounted on the inner side of one end of the first vertical portion of the first lower force arm away from the first horizontal portion, and includes a first clamping plate and a first clamping jaw. The first clamping plate is in the shape of a flat plate. The first clamping jaw is provided on the side of the first clamping plate facing away from the first lower force arm, and the side of the first clamping jaw made of soft polyurethane facing away from the first clamping plate is set to be V-shaped. The second clamping member is mounted on the inner side of one end of the second vertical portion of the second lower force arm away from the second horizontal portion, and includes a second clamping plate and a second clamping jaw. The second clamping plate is in the shape of a flat plate. The second clamping jaw is provided on the side of the second clamping plate facing away from the second lower force arm, and the side of the second clamping jaw made of soft polyurethane facing away from the second clamping plate is set to be V-shaped.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] 1. The lifting fixture for marine piston pins provided by the utility model can hoist marine piston pins safely and efficiently.

[0016] 2. When using the lifting fixture for marine piston pins provided by the utility model to lift marine piston pins, the surface of the marine piston pins can be free of residual magnetism and stains.

[0017] 3. The first clamping jaw and the second clamping jaw adopted by the utility model can protect the surface of the marine piston pins when hoisting the marine piston pins. Description of the Drawings

[0018] Figure 1 The perspective view of the lifting fixture for marine piston pins according to an embodiment of the utility model is shown, in which the lifting fixture hoists a marine piston pin.

[0019] Figure 2 Shown is Figure 1 The perspective view of the lifting fixture for marine piston pins shown in another direction.

[0020] Figure 3 Shown is Figure 1 The exploded view of the lifting fixture for marine piston pins shown.

[0021] Description of reference numerals: 1 - Lifting fixture; 11 - Lifting lug; 12 - Lifting beam; 121 - First fixing hole; 122 - First perforation; 123 - Second perforation; 124 - Connecting pin; 13 - Slide groove plate; 131 - First mounting hole; 133 - Second mounting hole; 134 - Slide groove; 14 - First upper force arm; 141 - First connection hole; 142 - Second connection hole; 143 - First pin; 15 - Second upper force arm; 151 - Third connection hole; 152 - Fourth connection hole; 153 - Second pin; 16 - First handle; 17 - Second handle; 171 - Connecting column; 172 - Handle part; 173 - Connecting nut; 18 - First lower force arm; 181 - Fifth connection hole; 182 - Sixth connection hole; 19 - Second lower force arm; 191 - Seventh connection hole; 192 - Eighth connection hole; 20 - First clamping member; 201 - First jaw; 202 - First clamping plate; 21 - Second clamping member; 211 - Second jaw; 212 - Second clamping plate; 3 - Marine piston pin. Detailed implementation mode

[0022] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0023] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0024] It should be noted that the terms used herein are only for describing specific implementation modes and are not intended to limit the exemplary implementation modes according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] In the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only relationship terms determined for the convenience of describing the structural relationship between various components or elements of the present utility model and do not specifically refer to any component or element in the present utility model and should not be construed as a limitation to the present utility model.

[0026] In the present utility model, terms such as "fixed connection", "connected", "connected to" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meaning of the above terms in the present utility model can be determined according to specific circumstances, and it should not be construed as a limitation to the present utility model.

[0027] As Figures 1 to 3 shown, the lifting fixture 1 for a marine piston pin provided by the present utility model includes a lifting beam 12, a lifting lug 11 installed on the upper side of the lifting beam 12, a chute plate 13 installed on one side of the lifting beam 12, a first upper force arm 14 and a second upper force arm 15 rotatably connected to the lifting beam 12, a first handle 16 installed on the chute plate 13, a first lower force arm 18 rotatably connected to the first upper force arm 14, a second lower force arm 19 rotatably connected to the second upper force arm 15, a second handle 17 connected to the first lower force arm 18 and the second lower force arm 19 and slidably installed on the chute plate 13, a first clamping member 20 installed on the first lower force arm 18, and a second clamping member 21 installed on the second lower force arm 19.

[0028] The lifting beam 12 is generally in an inverted U shape. A first fixing hole 121 is formed at the top of the U-shaped lifting beam 12, and the lifting lug 11 is installed in the first fixing hole 12. Preferably, the lifting lug 11 is provided as a lifting bolt, the first fixing hole 121 is a threaded hole, and the lifting lug 11 is installed in the first fixing hole 121 by means of threaded connection. A first through hole 122 is provided on the first leg of the U-shaped lifting beam 12, and a second through hole 123 is provided on the second leg, wherein the first through hole 122 and the second through hole 123 are arranged opposite to each other. A connecting pin 124 sequentially passes through the chute plate 13, the second through hole 123, the second upper force arm 15, the first upper force arm 14 and the first through hole 122, fixing the chute plate 13 on one side of the second leg of the lifting beam 12, and rotatably installing the first upper force arm 14 and the second upper force arm 15 on the lifting beam 12.

[0029] The chute plate 13 is generally in a long strip shape. One end of the chute plate 13 adjacent to the suspension beam 12 is provided with a plurality of first mounting holes 131. The connecting pin passes through the first mounting holes 131 to mount the chute plate 13 on the suspension beam 12. Preferably, the plurality of first mounting holes 131 are arranged at equal intervals. In actual use, according to needs, the chute plate 13 can be mounted on the suspension beam 12 by using different first mounting holes 131 to adjust the distance between the end of the chute plate 13 away from the suspension beam 12 and the suspension beam 12. A second mounting hole 133 is provided at the middle position of the chute plate 13. A chute 134 is provided at the end of the chute plate 13 away from the suspension beam 12. The first handle 16 is mounted in the second mounting hole 133. Preferably, one end of the first handle 16 adjacent to the chute plate 13 is provided with a thread. The first handle 16 passes through the second mounting hole 133 and is mounted in the second mounting hole 133 by a nut. The first handle 16 mounted on the chute plate 13 is between the first upper force arm 14 and the second upper force arm 15.

[0030] The first upper force arm 14 is generally in a rod shape. One end of the first upper force arm 14 adjacent to the suspension beam 12 is provided with a first connection hole 141, and the other end away from the suspension beam 12 is provided with a second connection hole 142. The second upper force arm 15 is generally in a rod shape. One end of the second upper force arm 15 adjacent to the suspension beam 12 is provided with a third connection hole 151, and the other end away from the suspension beam 12 is provided with a fourth connection hole 152. The connecting pin 124 passes through the first connection hole 141 and the third connection hole 151. The first lower force arm 18 is connected to the first upper force arm 14 by a hinged manner. The second lower force arm 19 is connected to the second upper force arm 15 by a hinged manner.

[0031] The first lower force arm 18 is generally in an L shape, including a first horizontal portion and a first vertical portion; the second lower force arm 19 is also generally in an L shape, including a second horizontal portion and a second vertical portion; wherein, the first horizontal portion and the second horizontal portion are arranged crosswise, and the first vertical portion and the second vertical portion are arranged opposite to each other. One end of the first horizontal portion away from the first vertical portion is provided with a fifth connection hole 181. The first pin 143 passes through the second connection hole 142 and the fifth connection hole 181 to hinge the first lower force arm 18 to the first upper force arm 14. A sixth connection hole 182 is provided at the middle position of the first horizontal portion. One end of the second horizontal portion away from the second vertical portion is provided with a seventh connection hole 191. The second pin 153 passes through the fourth connection hole and the seventh connection hole 191 to hinge the second lower force arm 19 to the second upper force arm 15. An eighth connection hole 192 is provided at the middle position of the second horizontal portion. The second handle 17 passes through the sixth connection hole 182 and the eighth connection hole 192 in sequence and is slidably connected to the chute 134.

[0032] The second handle 17 includes a handle portion 172 and a connecting post 171 provided at one end of the handle portion 172. The handle portion 172 and the connecting post 171 are respectively cylindrical, and the diameter of the connecting post 171 is smaller than that of the handle portion 172. The connecting post 171 sequentially passes through a sixth connecting hole 182, an eighth connecting hole 192, and a chute 134. One end of the connecting post 171 away from the handle portion 172 protrudes from the chute 134, and an external thread is provided at this end, and a connecting nut 173 is connected to the external thread of the connecting post 171. The first lower force arm 18, the second lower force arm 19, and the chute plate 13 are located between the connecting nut 173 and the handle portion 172. The connecting post 171 of the second handle 17 serves as a hinge pin of the force arm, and the marine piston pin 3 is clamped or released by the lever principle.

[0033] The first clamping member 20 is installed on the inner side of the first vertical portion of the first lower force arm 18 away from the first horizontal portion, and includes a first clamping plate 202 and a first clamping jaw 201. Preferably, the first clamping plate 202 is installed on the first lower force arm 18 by welding. The first clamping plate 202 is generally in the shape of a flat plate. A first clamping jaw 201 is provided on the side of the first clamping plate 202 facing away from the first lower force arm 18. Preferably, the first clamping jaw 201 is fixed to the first clamping plate 202 by screws. The side of the first clamping jaw 201 facing away from the first clamping plate 202 is set to be V-shaped and is made of soft polyurethane, which can protect the surface of the workpiece when hoisting the marine piston pin 3. The second clamping member 21 is installed on the inner side of the second vertical portion of the second lower force arm 19 away from the second horizontal portion, and includes a second clamping plate 212 and a second clamping jaw 211. Preferably, the second clamping plate 212 is installed on the second lower force arm 19 by welding. The second clamping plate 212 is generally in the shape of a flat plate. A second clamping jaw 211 is provided on the side of the second clamping plate 212 facing away from the second lower force arm 19. Preferably, the second clamping jaw 211 is fixed to the second clamping plate 212 by screws. The side of the second clamping jaw 211 facing away from the second clamping plate 212 is set to be V-shaped and is also made of soft polyurethane so as to be able to protect the surface of the marine piston pin 3 when hoisting the marine piston pin 3. Preferably, the distance between the first clamping jaw 201 and the second clamping jaw 211 is 30 - 50 mm larger than the diameter of the marine piston pin 3.

[0034] In use, the lifting lug 11 of the lifting fixture 1 is lifted by the hook of a traveling crane or a jib crane, and the lifting fixture 1 is moved above the marine piston pin 3. The first handle 16 and the second handle 17 are respectively held, and the second handle 17 is pulled upward along the sliding groove 134, so that the second handle 17 drives the first lower force arm 18 and the second lower force arm 19 to move upward. At the same time, the first upper force arm 14 and the second upper force arm 15 rotate relative to the lifting beam 12, driving the first horizontal portion of the first lower force arm 18 and the second horizontal portion of the second lower force arm 19 to rotate relative to the second handle 17, so that the ends of the first vertical portion of the first lower force arm 18 and the second vertical portion of the second lower force arm 19 move away from each other. As a result, the first jaw 201 on the first clamping plate 202 and the second jaw 211 on the second clamping plate 212 move away from each other. When the first clamping plate 202 and the second clamping plate 212 are respectively located on both sides of the marine piston pin 3 to be lifted, the second handle 17 is pushed downward along the sliding groove 134, and the first jaw 201 on the first clamping plate 202 and the second jaw 211 on the second clamping plate 212 move closer to each other to clamp the marine piston pin 3. The hook of the traveling crane or the jib crane is used to lift the lifting lug 11, and the marine piston pin 3 is lifted accordingly. Due to the self-weight and the influence of the lever mechanism, the first jaw 201 on the first clamping plate 202 and the second jaw 211 on the second clamping plate 212 form a self-locking and will not automatically loosen. When the marine piston pin 3 is lifted to the designated position, the hook of the traveling crane or the jib crane is lowered. The first handle 16 and the second handle 17 are respectively held, and the second handle 17 is pulled upward along the sliding groove 134. The first jaw 201 on the first clamping plate 202 and the second jaw 211 on the second clamping plate 212 move away from each other to release the marine piston pin 3, completing the lifting work.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lifting fixture for a marine piston pin, characterized in that, It includes a suspension beam, a lifting lug installed on the upper side of the suspension beam, a chute plate installed on one side of the suspension beam, a first upper force arm and a second upper force arm rotatably connected to the suspension beam, a first handle installed on the chute plate, a first lower force arm rotatably connected to the first upper force arm, a second lower force arm rotatably connected to the second upper force arm, a second handle connected to the first lower force arm and the second lower force arm and slidably installed on the chute plate, a first clamping member installed on the first lower force arm, and a second clamping member installed on the second lower force arm.

2. The lifting fixture for a marine piston pin according to claim 1, wherein The suspension beam is in an inverted U shape, and a first fixing hole is provided at the top of the U-shaped suspension beam, and the lifting lug is installed in the first fixing hole.

3. The lifting fixture for a marine piston pin according to claim 2, characterized in that, A first through hole is provided on the first leg of the U-shaped suspension beam, and a second through hole is provided on the second leg, and the first through hole and the second through hole are arranged opposite to each other; a connecting pin sequentially passes through the chute plate, the second through hole, the second upper force arm, the first upper force arm and the first through hole to fix the chute plate on one side of the second leg, and rotatably install the first upper force arm and the second upper force arm on the suspension beam.

4. The lifting fixture for a marine piston pin according to claim 3, characterized in that, The chute plate is in a long strip shape, and a plurality of first mounting holes are provided at one end of the chute plate adjacent to the suspension beam, and the connecting pin passes through the first mounting holes to install the chute plate on the suspension beam; a second mounting hole is provided at the middle position of the chute plate; a chute is provided at one end of the chute plate away from the suspension beam; the first handle is installed in the second mounting hole and is between the first upper force arm and the second upper force arm.

5. The lifting fixture for a marine piston pin according to claim 4, characterized in that, The first upper force arm is in a rod shape, a first connection hole is provided at one end adjacent to the suspension beam, and a second connection hole is provided at the other end away from the suspension beam; the second upper force arm is in a rod shape, a third connection hole is provided at one end adjacent to the suspension beam, and a fourth connection hole is provided at the other end away from the suspension beam; the connecting pin passes through the first connection hole and the third connection hole.

6. The lifting fixture for a marine piston pin according to claim 5, characterized in that The first lower force arm is in an L shape and includes a first horizontal part and a first vertical part; the second lower force arm is in an L shape and includes a second horizontal part and a second vertical part; the first horizontal part and the second horizontal part are cross-arranged, and the first vertical part and the second vertical part are arranged opposite to each other.

7. The lifting fixture for a marine piston pin according to claim 6, wherein A fifth connection hole is provided at one end of the first horizontal part away from the first vertical part, and a first pin passes through the second connection hole and the fifth connection hole to hinge the first lower force arm to the first upper force arm; a sixth connection hole is provided at the middle position of the first horizontal part.

8. The lifting fixture for a marine piston pin according to claim 7, characterized in that, A seventh connection hole is provided at one end of the second horizontal part away from the second vertical part, and a second pin passes through the fourth connection hole and the seventh connection hole to hinge the second lower force arm to the second upper force arm; an eighth connection hole is provided at the middle position of the second horizontal part; the second handle sequentially passes through the sixth connection hole and the eighth connection hole and is slidably connected to the chute.

9. The lifting fixture for a marine piston pin according to claim 8, characterized in that, The second handle includes a handle portion and a connecting post provided at one end of the handle portion; the handle portion and the connecting post are each cylindrical, and the diameter of the connecting post is smaller than that of the handle portion; the connecting post sequentially passes through a sixth connecting hole, an eighth connecting hole, and a sliding groove, and the end of the connecting post away from the handle portion protrudes from the sliding groove, and an external thread is provided at this end, and a connecting nut is connected to the external thread of the connecting post, and the first lower force arm, the second lower force arm, and the sliding groove plate are located between the connecting nut and the handle portion.

10. The lifting fixture for a marine piston pin according to claim 6, characterized in that, The first clamping member is installed on the inner side of the first vertical portion of the first lower force arm away from the first horizontal portion, and includes a first clamping plate and a first clamping jaw; the first clamping plate is in a flat plate shape; the first clamping jaw is provided on the side of the first clamping plate facing away from the first lower force arm, and the side of the first clamping jaw made of soft polyurethane facing away from the first clamping plate is set to be V-shaped; the second clamping member is installed on the inner side of the second vertical portion of the second lower force arm away from the second horizontal portion, and includes a second clamping plate and a second clamping jaw; the second clamping plate is in a flat plate shape, and the second clamping jaw is provided on the side of the second clamping plate facing away from the second lower force arm, and the side of the second clamping jaw made of soft polyurethane facing away from the second clamping plate is set to be V-shaped.

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