Heavy piston head lifting device with overturning function

Abstract

The invention discloses a heavy piston head lifting device with a turnover function in the technical field of engine manufacturing, which comprises a main frame and a mounting box, lifting lugs are arranged at four corners of the top of the main frame and are used for being connected with external lifting equipment to realize lifting of the whole device, and the mounting box is rotationally arranged in the main frame and is used for lifting the whole device. The main frame is used for clamping a piston head body and conducting posture overturning, and a first motor used for driving the mounting box to rotate is arranged on one side of the main frame. A clamping system is arranged in the mounting box and comprises a first clamping assembly used for clamping and fixing the inner side of the piston head body in an inner supporting mode and a second clamping assembly used for clamping and fixing the outer side of the piston head body in an outer clamping mode. The clamping system further comprises an air bag assembly arranged on the inner side of the second clamping assembly and used for protecting the outer surface of the piston head body. The device is suitable for hoisting a large-mass piston head body and has an overturning function, and the clamping safety and stability are greatly improved.

Description

Technical Field

[0001] The invention relates to the field of engine manufacturing, and in particular to a heavy-duty piston head lifting device with a turning function. Background Art

[0002] In the shipbuilding and repair industries, piston heads, as key engine components, are large, heavy, and require extremely high machining precision. Therefore, safely and efficiently moving and positioning these heavy piston heads during manufacturing presents a challenge. Traditional lifting methods often struggle to meet the demands of modern, efficient production, especially when transferring piston heads from one position (such as horizontal) to another (such as vertical placement for easy insertion into a boring machine) for precise machining.

[0003] The piston head is generally provided with a central groove (301) at the end facing away from the combustion chamber, and piston pin holes (302) are symmetrically provided on both sides of the central groove (301), and the piston pin holes (302) radially penetrate the piston head. Conventional lifting devices often use a single external clamping or internal support clamping structure during the lifting process, which cannot effectively cope with dynamic loads such as vibration and overturning under complex working conditions, posing a safety hazard. In addition, the metal clamping block is generally in direct contact with the piston head, which can easily damage the surface of the piston head, causing mechanical damage such as scratches and indentations, affecting the quality of subsequent processing. At the same time, most existing lifting devices are not equipped with an effective anti-fall linkage structure. Once the clamping fails or the equipment malfunctions, it is very easy for the workpiece to fall off. Especially during high-altitude overturning operations, the risk is more prominent.

[0004] To this end, a heavy-duty piston head lifting device with a flipping function is provided to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a heavy-duty piston head lifting device with a flipping function, which solves the problem of unsatisfactory safety and stability in the existing lifting process.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: A heavy-duty piston head lifting device with a flipping function includes a main frame and an installation box. The four corners of the top of the main frame are provided with lifting ears for connecting external lifting equipment to realize the lifting and lowering of the entire device. The installation box is rotatably arranged in the main frame and is used to clamp the piston head body and flip its posture. A first motor for driving the installation box to rotate is provided on one side of the main frame; a clamping system is provided in the installation box, including a first clamping assembly for clamping and fixing the inner side of the piston head body by internal support and a second clamping assembly for clamping and fixing the outer side of the piston head body by external clamping; the clamping system also includes an airbag assembly arranged on the inner side of the second clamping assembly for protecting the outer surface of the piston head body.

[0007] As a further optimization scheme of the present invention, the first clamping assembly is used to clamp the inner wall of the center groove of the piston head body away from the end of the combustion chamber, and the first clamping assembly includes a first mounting ring body, two symmetrically distributed first clamping units installed on the first mounting ring body, and a first lifting mechanism for driving the first mounting ring body to rise and fall; the first clamping unit includes a first hydraulic cylinder and a first clamping block fixed to the movable end of the first hydraulic cylinder, a first guide rod is fixedly provided on the top of the first mounting ring body, and the top end of the first guide rod is movable through the guide hole on the top surface of the mounting box.

[0008] As a further optimization scheme of the present invention, the second clamping assembly includes a second mounting ring body, a plurality of second clamping units evenly distributed along the circumference installed on the second mounting ring body, and a second lifting mechanism for driving the second mounting ring body to rise and fall; the second clamping unit includes a second hydraulic cylinder and a second clamping block fixed to the movable end of the second hydraulic cylinder, a second guide rod is fixed to the top of the second mounting ring body, and the top end of the second guide rod is movable through the guide hole on the top surface of the mounting box.

[0009] As a further optimized solution of the present invention, the airbag assembly includes an annular bag body arranged around the outer peripheral surface of the piston head body, and the outer side surface of the annular bag body is fixedly connected to the second clamping block.

[0010] As a further optimization scheme of the present invention, the first clamping unit also includes a rigid rod fixedly arranged at the movable end of the first hydraulic cylinder, and the rigid rod passes through the first clamping block and extends into the piston pin hole of the piston head body; the inner side surface of the annular sac is provided with a tightening sleeve integrally formed therewith, and the tightening sleeve extends radially along the annular sac and is connected with it, and the tightening sleeve is inserted into the piston pin hole and covers the outer circumferential surface of the rigid rod.

[0011] As a further optimization scheme of the present invention, the upper and lower ends of the outer side surface of the annular sac are integrally formed with convex rings, and the second clamping block is located between the two convex rings; a positioning groove is provided on the surface of the tightening sleeve, and a sliding rail matching the positioning groove is provided on the inner wall of the piston pin hole.

[0012] As a further optimization scheme of the present invention, the installation box is also provided with a cleaning assembly for cleaning the inner and outer sides of the piston head body, and the cleaning assembly includes a coarse wiping unit, a liquid spray unit, a fine wiping unit and a rotating unit for driving the coarse wiping unit, the liquid spray unit and the fine wiping unit to rotate along the circumferential direction of the piston head body.

[0013] As a further optimization scheme of the present invention, the coarse wiping unit includes a first cleaning block, a second cleaning block, a first electric push rod for driving the first cleaning block to rise and fall, and a second electric push rod for driving the second cleaning block to rise and fall; the structure of the fine wiping unit is the same as that of the coarse wiping unit; the liquid spraying unit includes a liquid spraying frame, a storage cylinder fixed on the top of the liquid spraying frame, and a third electric push rod for driving the liquid spraying frame to rise and fall.

[0014] As a further optimization scheme of the present invention, the rotating unit includes a plurality of supporting blocks fixed in the mounting box, a gear ring rotatably arranged on the supporting block, a gear meshing with the gear ring, and a second motor for driving the gear to rotate; the first electric push rod, the second electric push rod and the third electric push rod are all fixed on the top of the gear ring.

[0015] The beneficial effects of the present invention are: 1. The present invention is suitable for lifting large-mass piston head bodies and has a flipping function, which can flip the piston head body from a vertical to a horizontal posture. The piston head body is clamped by a combination of internal support and external clamping, which greatly improves the firmness of the clamping. The surface quality of the piston head body is protected by the airbag component to avoid scratches or indentations on the surface of the piston head body.

[0016] 2. During the clamping process of the first clamping assembly and the second clamping assembly, the present invention forms a flexible expansion clamping and locking structure through the cooperation of the tightening sleeve and the rigid rod, which has an anti-falling effect, prevents the piston head body from accidentally falling off, ensures the stability of the center of gravity of the piston head body during the flipping process, avoids shaking, greatly improves the safety and stability of lifting, and the flexible expansion avoids the direct wear of the piston pin hole by the traditional rigid clamp.

[0017] 3. The present invention cleans the inner and outer sides of the piston head body in sequence according to the process of rough wiping, liquid spraying and fine wiping. The rotating unit drives the rough wiping unit, the liquid spraying unit and the fine wiping unit to rotate around the piston head body to achieve continuous cleaning around the entire circle. The clamping part of the piston head body is pre-treated before clamping to improve the clamping stability and processing accuracy, increase the clamping friction coefficient, and avoid slipping or clamping failure due to oil pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the installation box of the present invention; Figure 3 This is a schematic structural diagram of the piston head body of the present invention; Figure 4 This is a schematic structural diagram of the first clamping assembly of the present invention; Figure 5 This is a schematic structural diagram of the second clamping assembly of the present invention; Figure 6 It is a schematic structural diagram of the airbag assembly of the present invention; Figure 7 This is a schematic diagram of the connection structure between the airbag assembly and the piston head body of the present invention; Figure 8 It is a schematic structural diagram of the cleaning component of the present invention.

[0019] In the picture: 1. Main frame; 101. Lifting lug; 102. First motor; 2. Mounting box; 3. Piston head body; 301. Center groove; 302. Piston pin hole; 4. First clamping assembly; 401. First mounting ring; 402. First hydraulic cylinder; 403. First clamping block; 404. Rigid rod; 405. First lifting mechanism; 406. First guide rod; 5. Second clamping assembly; 501. Second mounting ring; 502. Second hydraulic cylinder; 503. Second clamping block; 504 , second lifting mechanism; 505, second guide rod; 6, airbag assembly; 601, annular sac; 602, tightening sleeve; 603, convex ring; 604, positioning groove; 7, cleaning assembly; 701, first cleaning block; 702, second cleaning block; 703, first electric push rod; 704, second electric push rod; 705, spray rack; 706, storage cylinder; 707, third electric push rod; 708, gear ring; 709, support block; 710, gear; 711, second motor. DETAILED DESCRIPTION

[0020] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example 1 In order to solve the problem that the existing piston head lifting device cannot ensure the clamping stability when clamping the heavy piston head, and is easy to cause scratches or indentations on the piston head surface, please refer to Figures 1-6The present invention provides a heavy-duty piston head lifting device with a flipping function, which includes a main frame 1 and an installation box 2. The four corners of the top of the main frame 1 are provided with lifting ears 101 for connecting external lifting equipment to realize the lifting and lowering of the entire device. The installation box 2 is rotatably arranged in the main frame 1, and is used to clamp the piston head body 3 and flip its posture. A first motor 102 is provided on one side of the main frame 1 for driving the installation box 2 to rotate; a clamping system is provided in the installation box 2, including a first clamping component 4 for clamping and fixing the inner side of the piston head body 3 by an internal support method and a second clamping component 5 for clamping and fixing the outer side of the piston head body 3 by an external clamping method; the clamping system also includes an airbag component 6 arranged on the inner side of the second clamping component 5 for protecting the outer surface of the piston head body 3.

[0022] The first clamping assembly 4 is used to clamp the inner wall of the central groove 301 at the end of the piston head body 3, away from the combustion chamber. The first clamping assembly 4 includes a first mounting ring 401, two symmetrically distributed first clamping units mounted on the first mounting ring 401, and a first lifting mechanism 405 for driving the first mounting ring 401 up and down. The first lifting mechanism 405 can be an electric push rod, a servo motor and a screw pair, or a hydraulic cylinder. The first clamping unit includes a first hydraulic cylinder 402 and a first clamping block 403 fixed to the movable end of the first hydraulic cylinder 402. A first guide rod 406 is fixed to the top of the first mounting ring 401, and the top end of the first guide rod 406 is movable through a guide hole in the top surface of the mounting box 2. The first lifting mechanism 405 drives the first mounting ring 401 down to the piston head central groove 301. The first hydraulic cylinder 402 pushes the first clamping block 403 outward to achieve internal support clamping. The first guide rod 406 ensures the stability of the vertical movement of the first clamping assembly 4.

[0023] The second clamping assembly 5 includes a second mounting ring 501, a plurality of second clamping units mounted on the second mounting ring 501 and spaced evenly along its circumference, and a second lifting mechanism 504 for driving the second mounting ring 501 upward and downward. The second lifting mechanism 504 can be an electric push rod, a servo motor and a lead screw pair, or a hydraulic cylinder. The second clamping unit includes a second hydraulic cylinder 502 and a second clamping block 503 fixed to the movable end of the second hydraulic cylinder 502. A second guide rod 505 is fixed to the top of the second mounting ring 501, the top end of which is movable and extends through a guide hole in the top surface of the mounting box 2. The second lifting mechanism 504 drives the second mounting ring 501 downward, and the second hydraulic cylinder 502 drives the second clamping block 503 to clamp the outer circumference of the piston head. The second guide rod 505 ensures the stability of the vertical movement of the second clamping assembly 5.

[0024] The airbag assembly 6 includes an annular bag body 601 arranged around the outer peripheral surface of the piston head body 3 , and the outer side surface of the annular bag body 601 is fixedly connected to the second clamping block 503 .

[0025] The device uses the main frame 1 as the overall supporting structure, and the lifting ears 101 set at the four corners are used to connect with equipment such as a crane or an overhead crane to realize the lifting and movement of the entire device. The installation box 2 can rotate around the axis inside the main frame 1 to clamp the piston head body 3 and complete the posture flip from vertical to horizontal; the first clamping component 4 acts on the inner wall of the piston head body 3 through internal support, and the second clamping component 5 acts on the outer circumference of the piston head body 3 through external clamping. A combination of internal support and external clamping is used to form a stable clamping force. The airbag component 6 is located between the second clamping block 503 and the piston head body 3, serving as a buffer layer to prevent surface damage caused by direct metal contact. The entire device is suitable for lifting large-mass piston head bodies 3.

[0026] Example 2 On the basis of embodiment 1, in order to improve the safety and stability of lifting, Figure 4 、 Figure 6-Figure 7 As shown, the first clamping unit also includes a rigid rod 404 fixed to the movable end of the first hydraulic cylinder 402. The rigid rod 404 passes through the first clamping block 403 and extends into the piston pin hole 302 of the piston head body 3. A tightening sleeve 602 is integrally formed on the inner side of the annular capsule 601. The tightening sleeve 602 extends radially along the annular capsule 601 and communicates with it. The tightening sleeve 602 is inserted into the piston pin hole 302 and covers the outer circumferential surface of the rigid rod 404. The piston pin hole 302 is not only used to assemble the piston pin, but also serves as an interface for auxiliary positioning and anti-drop linkage structure, fully utilizing the existing structure to achieve a clamping and positioning, clamping and locking linkage mechanism. To avoid rust or burrs on the wall of the piston pin hole 302, which may cause damage to the airbag assembly 6, pneumatic sandblasting or brush cleaning is generally used before clamping.

[0027] The upper and lower ends of the outer side surface of the annular sac 601 are integrally formed with convex rings 603, and the second clamping block 503 is located between the two convex rings 603 to ensure that the annular sac 601 does not shift during the clamping process; a positioning groove 604 is provided on the surface of the tightening sleeve 602, and a sliding rail matching the positioning groove 604 is provided on the inner wall of the piston pin hole 302. When inserted, it moves in a straight line along the track to avoid shifting.

[0028] When the second clamping block 503 of the second clamping assembly 5 applies clamping pressure to the annular sac 601, the annular sac 601 is compressed and deformed, and the internal gas is compressed and flows to the tightening sleeve 602 area, causing the tightening sleeve 602 to expand and deform, thereby fitting tightly against the inner wall of the piston pin hole 302 and filling the gap space between the rigid rod 404 and the inner wall of the piston pin hole 302, forming a flexible expansion clamping and locking structure; during the clamping process of the first clamping assembly 4 and the second clamping assembly 5, the linkage anti-fall mechanism is triggered to prevent the piston head body 3 from accidentally falling off, thereby improving the safety and stability of lifting, and the flexible expansion avoids damage due to hard contact.

[0029] Example 3 On the basis of the first and second embodiments, in order to improve the clamping stability and processing accuracy, as shown in FIG. Figure 2 、 Figure 8 As shown, a cleaning assembly 7 for cleaning the inner and outer sides of the piston head body 3 is also provided in the installation box 2. The cleaning assembly 7 includes a coarse wiping unit, a liquid spraying unit, a fine wiping unit, and a rotating unit for driving the coarse wiping unit, the liquid spraying unit, and the fine wiping unit to rotate along the circumferential direction of the piston head body 3.

[0030] The coarse wiping unit includes a first cleaning block 701, a second cleaning block 702, a first electric push rod 703 for driving the first cleaning block 701 to rise and fall, and a second electric push rod 704 for driving the second cleaning block 702 to rise and fall; the structure of the fine wiping unit is the same as that of the coarse wiping unit; the liquid spraying unit includes a liquid spraying frame 705, a storage cylinder 706 fixed to the top of the liquid spraying frame 705, and a third electric push rod 707 for driving the liquid spraying frame 705 to rise and fall.

[0031] The rotating unit includes a plurality of support blocks 709 fixedly mounted within the mounting box 2, a ring gear 708 rotatably mounted on the support blocks 709, a gear 710 meshing with the ring gear 708, and a second motor 711 for driving the gear 710. The first electric push rod 703, the second electric push rod 704, and the third electric push rod 707 are all fixedly mounted on top of the ring gear 708. The second motor 711 drives the gear 710 to rotate, causing the ring gear 708 and the coarse cleaning unit, the liquid spray unit, and the fine cleaning unit mounted thereon to rotate around the piston head body 3, achieving a surround cleaning effect.

[0032] During cleaning, the inner and outer sides of the piston head body 3 are cleaned in sequence according to the process of rough wiping, spraying and fine wiping. The rotating unit drives the rough wiping unit, the spraying unit and the fine wiping unit to rotate around the piston head body 3 to achieve continuous cleaning around the entire circle, remove dust, oil and impurities attached to the surface, and pre-treat the clamping part of the piston head body 3 before clamping to improve the clamping stability and processing accuracy, increase the clamping friction coefficient, and avoid slipping or clamping failure due to oil.

[0033] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A heavy-duty piston head lifting device with a flipping function, comprising a main frame (1) and a mounting box (2), characterized in that: The main frame (1) is provided with lifting ears (101) at the four corners of the top for connecting to external lifting equipment to achieve the lifting of the entire device. The installation box (2) is rotatably arranged in the main frame (1) for clamping the piston head body (3) and performing posture flipping. A first motor (102) for driving the installation box (2) to rotate is provided on one side of the main frame (1); The mounting box (2) is provided with a clamping system, comprising a first clamping assembly (4) for clamping and fixing the inner side of the piston head body (3) by an internal support method, and a second clamping assembly (5) for clamping and fixing the outer side of the piston head body (3) by an external clamping method; The clamping system further comprises an airbag assembly (6) arranged on the inner side of the second clamping assembly (5) for protecting the outer surface of the piston head body (3).

2. A heavy-duty piston head lifting device with a flipping function according to claim 1, characterized in that: The first clamping assembly (4) is used to clamp the inner wall of the central groove (301) of the piston head body (3) away from the combustion chamber end, and includes a first mounting ring (401), two symmetrically distributed first clamping units mounted on the first mounting ring (401), and a first lifting mechanism (405) for driving the first mounting ring (401) to rise and fall; The first clamping unit comprises a first hydraulic cylinder (402) and a first clamping block (403) fixed to a movable end of the first hydraulic cylinder (402); a first guide rod (406) is fixed to the top of the first mounting ring (401); and the top end of the first guide rod (406) movably passes through a guide hole on the top surface of the mounting box (2).

3. The heavy-duty piston head lifting device with a flipping function according to claim 2, characterized in that: The second clamping assembly (5) comprises a second mounting ring body (501), a plurality of second clamping units mounted on the second mounting ring body (501) and evenly distributed along the circumference, and a second lifting mechanism (504) for driving the second mounting ring body (501) to rise and fall; The second clamping unit comprises a second hydraulic cylinder (502) and a second clamping block (503) fixed to the movable end of the second hydraulic cylinder (502); a second guide rod (505) is fixed to the top of the second mounting ring (501); the top end of the second guide rod (505) movably passes through the guide hole on the top surface of the mounting box (2).

4. The heavy-duty piston head lifting device with a flipping function according to claim 3, characterized in that: The airbag assembly (6) comprises an annular sac (601) arranged around the outer peripheral surface of the piston head body (3), and the outer side surface of the annular sac (601) is fixedly connected to the second clamping block (503).

5. The heavy-duty piston head lifting device with a flipping function according to claim 4, characterized in that: The first clamping unit further comprises a rigid rod (404) fixedly arranged at the movable end of the first hydraulic cylinder (402), wherein the rigid rod (404) passes through the first clamping block (403) and extends into the piston pin hole (302) of the piston head body (3); A tightening sleeve (602) formed integrally with the annular sac (601) is provided on the inner side surface thereof. The tightening sleeve (602) extends radially along the annular sac (601) and is in communication with the annular sac (601). The tightening sleeve (602) is inserted into the piston pin hole (302) and covers the outer peripheral surface of the rigid rod (404).

6. The heavy-duty piston head lifting device with a turning function according to claim 5, characterized in that: The outer side surface of the annular capsule (601) is integrally formed with convex rings (603) at both upper and lower ends, and the second clamping block (503) is located between the two convex rings (603); A positioning groove (604) is provided on the surface of the tightening sleeve (602), and a slide rail matching the positioning groove (604) is provided on the inner wall of the piston pin hole (302).

7. The heavy-duty piston head lifting device with a flipping function according to claim 1, characterized in that: The installation box (2) is further provided with a cleaning assembly (7) for cleaning the inner and outer sides of the piston head body (3), the cleaning assembly (7) comprising a coarse wiping unit, a liquid spraying unit, a fine wiping unit, and a rotating unit for driving the coarse wiping unit, the liquid spraying unit, and the fine wiping unit to rotate along the circumferential direction of the piston head body (3).

8. The heavy-duty piston head lifting device with a turning function according to claim 7, characterized in that: The coarse wiping unit comprises a first cleaning block (701), a second cleaning block (702), a first electric push rod (703) for driving the first cleaning block (701) to rise and fall, and a second electric push rod (704) for driving the second cleaning block (702) to rise and fall; The structure of the fine erasing unit is the same as that of the coarse erasing unit; The liquid spraying unit comprises a liquid spraying frame (705), a storage cylinder (706) fixedly arranged on the top of the liquid spraying frame (705), and a third electric push rod (707) for driving the liquid spraying frame (705) to rise and fall.

9. The heavy-duty piston head lifting device with a flipping function according to claim 8, characterized in that: The rotating unit comprises a plurality of supporting blocks (709) fixedly arranged in the installation box (2), a gear ring (708) rotatably arranged on the supporting blocks (709), a gear (710) meshing with the gear ring (708), and a second motor (711) for driving the gear (710) to rotate; The first electric push rod (703), the second electric push rod (704) and the third electric push rod (707) are all fixedly arranged on the top of the gear ring (708).

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