A lifting device for valve cover

Abstract

The present invention discloses a sling for a valve cover, comprising a horizontal frame, two vertical frames are fixed to the side wall of the horizontal frame, two vertical frames are fixed to the upper end of the horizontal frame, a horizontal beam is fixed to the upper end of the two vertical frames, a fine-tuning box is fixed to the upper end of the horizontal beam, a hanging ear is fixed to the upper end of the fine-tuning box, a fine-tuning alignment mechanism is provided inside the fine-tuning box, rollers are fixed to the bottom of the horizontal frame and the vertical frame, blocks are fixed to the upper ends of the two vertical frames, and a stabilizing mechanism is provided on the side walls of the two vertical frames. The advantages are: the valve cover can move downward through the transfer of hydraulic oil inside the sealing ring, and the speed of the valve cover moving downward is slow, so that the position of the valve cover can be adjusted more conveniently and accurately, thereby improving the accuracy and convenience of clamping. When it is necessary to stop, it is only necessary to rotate the sealing rod, which is simple and convenient to operate, and the valve cover can be accurately and conveniently installed.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a hanger for a valve cover. Background Art

[0002] A valve part equipped with a stem seal, used to connect or support the actuator. The valve cover and valve body can be a whole or separate.

[0003] The valve cover needs to be finely processed on its surface during the processing, so it needs to be transferred to a lathe for processing. Small valve covers are directly transferred manually, while large valve covers are large in size and heavy, and cannot be moved manually. Usually, it is necessary to weld a lifting ring on the surface of the casting and then lift the workpiece. The lifting ring is removed after the processing is completed. However, this method will consume a lot of welding materials and time costs, which brings a lot of inconvenience to the actual processing. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the valve cover is heavy and inconvenient to lift, and to propose a lifting device for the valve cover.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a hanger for a valve cover, comprising a horizontal frame, two vertical frames are fixed to the side walls of the horizontal frame, two vertical frames are fixed to the upper end of the horizontal frame, a horizontal beam is fixed to the upper ends of the two vertical frames, a fine-tuning box is fixed to the upper end of the horizontal beam, a hanging ear is fixed to the upper end of the fine-tuning box, a fine-tuning alignment mechanism is provided inside the fine-tuning box, rollers are fixed to the bottoms of the horizontal frame and the vertical frame, blocks are fixed to the upper ends of the two vertical frames, stabilizing mechanisms are provided on the side walls of the two vertical frames, a ferrule is rotatably connected to the side wall of one of the vertical frames, an expansion stabilizing mechanism is provided inside the ferrule, a pressure-bearing mechanism is provided inside one of the vertical frames, and a pressure transfer mechanism is provided inside one of the vertical frames.

[0006] In the above-mentioned hanger for the valve cover, the fine-tuning alignment mechanism includes a transition chamber and two sealed chambers opened inside the fine-tuning box, the inner walls of the two sealed chambers are sealed and slidably connected with slides, the bottoms of the two slides are fixed with slide bars, the two slide bars respectively penetrate the bottoms of the corresponding sealed chambers and are fixed to the upper ends of the crossbeams, and a "T"-shaped hydraulic pipe is inserted through the side wall of the transition chamber, and the hydraulic pipe is connected to the interiors of the two sealed chambers;

[0007] A deflection groove is penetrated through the side wall of the fine-tuning box, a sealing belt is fixed to the inner wall of the deflection groove, a sealing rod is penetrated and fixed to the side wall of the sealing belt, the upper end of the sealing rod is penetrated and rotatably connected with a central shaft, the central shaft is fixed to the inner wall of the fine-tuning box, a telescopic rod is fixed to the end of the sealing rod, and the bottom of the sealing rod abuts against the upper end of the hydraulic pipe and blocks the hydraulic pipe.

[0008] In the above-mentioned hanger for valve cover, the stabilizing mechanism includes two mounting plates fixed to the side walls of the longitudinal frame, the side walls of the two mounting plates are rotatably connected with a support plate, and the upper part of the support plate is inclined after the bottom is flat.

[0009] In the above-mentioned hanger for the valve cover, the pressure-bearing mechanism includes a push plate that is sealingly and slidingly connected to the inner wall of the longitudinal frame, and a return spring is fixed to the push plate and the inner bottom of the longitudinal frame. A push rod is fixed to the upper end of the push plate, and the upper end of the push rod passes through the top of the longitudinal frame and is fixed with a pressure plate. The interior of the longitudinal frame is filled with hydraulic oil.

[0010] In the above-mentioned hanger for the valve cover, the pressure transfer mechanism includes an extrusion plate that is sealingly and slidingly connected to the inner wall of the frame, and the side wall of the extrusion plate and the inner top of the frame are jointly fixed with a transfer spring. The side wall of the frame is penetrated by an output pipe and a transfer pipe, and the output pipe is connected to the interior of the corresponding vertical frame.

[0011] In the above-mentioned hanger for the valve cover, the expansion stabilization mechanism includes a valve installed on the upper end of the ferrule and connected to the inside of the ferrule, the end of the transfer pipe close to the valve is connected to the valve, the inner wall seal of the ferrule is penetrated by a sliding connection with an expansion plate, and the expansion plate is "T" shaped.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] 1. In the present invention, the support plate is rotated so that its bottom touches the ground. The equipment is hindered by the great friction between the support plate and the ground during movement, thereby ensuring the stability of the equipment placement. At the same time, the upper part of the support plate is inclined, which can better roll the valve cover onto the equipment, thereby making the combination of the equipment and the lifting device more convenient and labor-saving. Since the design of the ferrule is rotatable, it is just stuck on the back of the small end of the valve cover, so that the valve cover does not tilt during the lifting process, ensuring the stability of the lifting process;

[0014] 2. In the present invention, the expansion plate moves outward to completely cover the gap between the back of the small end and the large end of the valve cover, so that the valve cover cannot move along the longitudinal frame direction after being clamped by the clamping sleeve, so that the valve cover can be stably combined with the hanger and will not produce relative displacement with the hanger itself, thereby ensuring the stability of the hoisting and the subsequent alignment accuracy;

[0015] 3. In the present invention, the valve cover can move downward by transferring the hydraulic oil inside the sealing ring, and the speed of the valve cover moving downward is slow, so that the position of the valve cover can be adjusted more conveniently and accurately, thereby improving the accuracy and convenience of clamping. When it is necessary to stop, it is only necessary to rotate the sealing rod, which is simple and convenient to operate, and the valve cover can be installed accurately and conveniently;

[0016] 4. In the present invention, the pressure of the valve cover gravity on the hydraulic oil is converted into the potential energy of the transfer spring for storage. After the valve cover and the ferrule are in place, the energy is released, thereby making the clamping process of the ferrule easier and more convenient. The equipment can be easily moved under the rolling action of the roller, thereby facilitating the easy transfer of the heavier valve cover. It can replace the transfer equipment of the valve cover to a certain extent. When facing the transfer of a single valve cover, it is very practical and will not occupy the use of too much or too large equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural schematic diagram of a hanger for a valve cover proposed by the present invention;

[0018] Figure 2 A schematic diagram of the back structure of a hanger for a valve cover proposed by the present invention;

[0019] Figure 3 A half-section view of a fine-tuning box portion of a hanger for a valve cover proposed by the present invention;

[0020] Figure 4 for Figure 3 Cross-sectional view in the A direction;

[0021] Figure 5 A half-section view of a stand portion of a hanger for a valve cover proposed by the present invention;

[0022] Figure 6 The present invention is a side sectional view of a ferrule portion of a hanger for a valve cover.

[0023] In the figure: 1 horizontal frame, 2 vertical frame, 3 vertical frame, 4 crossbeam, 5 fine-tuning box, 6 hanging ears, 7 blocks, 8 ferrules, 9 rollers, 10 mounting plates, 11 support plates, 12 sealing chambers, 13 transition chambers, 14 slide plates, 15 slide bars, 16 hydraulic pipes, 17 deflection grooves, 18 sealing belts, 19 telescopic rods, 20 central rotating shafts, 21 sealing rods, 22 return springs, 23 push plates, 24 push rods, 25 pressure plates, 26 output pipes, 27 transfer springs, 28 extrusion plates, 29 transfer pipes, 30 valves, and 31 expansion plates. DETAILED DESCRIPTION

[0024] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0025] Example

[0026] Reference Figure 1-6A hanger for a valve cover comprises a horizontal frame 1, two vertical frames 2 are fixed to the side walls of the horizontal frame 1, two vertical frames 3 are fixed to the upper end of the horizontal frame 1, a horizontal beam 4 is fixed to the upper ends of the two vertical frames 3, a fine-tuning box 5 is fixed to the upper end of the horizontal beam 4, a hanging ear 6 is fixed to the upper end of the fine-tuning box 5, a fine-tuning alignment mechanism is arranged inside the fine-tuning box 5, rollers 9 are fixed to the bottoms of the horizontal frame 1 and the vertical frames 2, blocks 7 are fixed to the upper ends of the two vertical frames 2, stabilizing mechanisms are arranged on the side walls of the two vertical frames 2, a ferrule 8 is rotatably connected to the side wall of one of the vertical frames 3, an expansion stabilizing mechanism is arranged inside the ferrule 8, a pressure-bearing mechanism is arranged inside one of the vertical frames 2, and a pressure transfer mechanism is arranged inside one of the vertical frames 3.

[0027] The fine-tuning alignment mechanism includes a transition chamber 13 and two sealed chambers 12 opened inside the fine-tuning box 5. The inner walls of the two sealed chambers 12 are sealed and slidably connected with slide plates 14. The bottoms of the two slide plates 14 are fixed with slide bars 15. The two slide bars 15 respectively penetrate the bottoms of the corresponding sealed chambers 12 and are fixed to the upper ends of the crossbeams 4. A "T"-shaped hydraulic pipe 16 is inserted through the side wall of the transition chamber 13. The hydraulic pipe 16 is connected to the insides of the two sealed chambers 12.

[0028] A deflection groove 17 is formed through the side wall of the fine-tuning box 5, a sealing belt 18 is fixed to the inner wall of the deflection groove 17, a sealing rod 21 is fixed through the side wall of the sealing belt 18, the upper end of the sealing rod 21 is rotatably connected with a central shaft 20, the central shaft 20 is fixed to the inner wall of the fine-tuning box 5, a telescopic rod 19 is fixed to the end of the sealing rod 21, the bottom of the sealing rod 21 abuts against the upper end of the hydraulic pipe 16 and blocks the hydraulic pipe 16, the sealing chamber 12 is filled with hydraulic oil, and the sealing belt 18 seals the deflection groove 17, thereby ensuring the relative tightness of the interior of the fine-tuning box 5. For the sealed space, after the hydraulic oil is transferred to the upper space of the fine-tuning box 5 along the hydraulic pipe 16, when not in use, it is only necessary to manually push the fine-tuning box 5 to move it downward, so that the slide plate 14 moves up and resets, thereby sucking the hydraulic oil in the upper space through the hydraulic pipe 16 to reset it, so that the entire equipment can be recycled, and when necessary, the telescopic rod 19 can be lengthened to lengthen the force arm, so that the rotation of the sealing rod 21 is easier, even in the face of high-strength hydraulic oil pressure, it can also achieve smooth rotation to drain the oil and close the stop position, ensuring the accurate position of the valve cover.

[0029] The stabilizing mechanism includes two mounting plates 10 fixed to the side walls of the longitudinal frame 2. The side walls of the two mounting plates 10 are rotatably connected with a support plate 11. The support plate 11 has a flat bottom and an inclined upper part. The support plate 11 increases friction to maintain balance and assists the transfer of the valve cover to the hanger.

[0030] The pressure-bearing mechanism includes a push plate 23 that is sealingly and slidingly connected to the inner wall of the longitudinal frame 2, and a return spring 22 is fixed to the push plate 23 and the inner bottom of the longitudinal frame 2. A push rod 24 is fixed to the upper end of the push plate 23, and the upper end of the push rod 24 passes through the top of the longitudinal frame 2 and is fixed with a pressure plate 25. The interior of the longitudinal frame 2 is filled with hydraulic oil; the pressure transfer mechanism includes an extrusion plate 28 that is sealingly and slidingly connected to the inner wall of the vertical frame 3, and a transfer spring 27 is fixed to the side wall of the extrusion plate 28 and the inner top of the vertical frame 3. An output pipe 26 and a transfer pipe 29 are inserted through the side wall of the vertical frame 3. The output pipe 26 is connected to the interior of the corresponding longitudinal frame 2, and the pressure of the valve cover gravity on the hydraulic oil is converted into the potential energy of the transfer spring 27, thereby storing it. After the valve cover and the ferrule 8 are in place, the energy is released, thereby making the clamping process of the ferrule 8 easier and more convenient.

[0031] The expansion stabilization mechanism includes a valve 30 installed on the upper end of the ferrule 8 and connected to the inside of the ferrule 8. The end of the transfer pipe 29 close to the valve 30 is connected to the valve 30. The inner wall seal of the ferrule 8 is penetrated by an expansion plate 31 which is slidably connected. The expansion plate 31 is in a "T" shape. After the expansion plate 31 is pushed by the hydraulic oil inside the ferrule 8, it will protrude to fill the gap between the small end and the large end of the valve cover, so that the valve cover and the hoist are combined into one, and there will be no relative displacement, thereby ensuring the stability of the hoisting process. In addition, the protrusion degree of the expansion plate 31 is variable, so it can adapt to valve covers of different sizes.

[0032] In the present invention, when it is actually used, the support plate 11 is first rotated to make its bottom touch the ground, so that the equipment is hindered by the great friction between the support plate 11 and the ground during movement, thereby ensuring the stability of the equipment placement. At the same time, the upper part of the support plate 11 is inclined, which can better roll the valve cover to the equipment, thereby making the combination of the equipment and the lifting device more convenient and labor-saving. After the valve cover is moved to the lifting device, the valve cover is pushed so that its small end passes through the position of the stand 3, and then the clamping sleeve 8 is rotated so that the clamping sleeve 8 clamps the back of the small end of the valve cover. Since the design of the clamping sleeve 8 is rotatable, it is just clamped on the back of the small end of the valve cover, so that the valve cover does not tilt during the lifting process, thereby ensuring the stability of the lifting process;

[0033] Moreover, when the valve cover is transferred to the hanger, the valve cover will squeeze the pressure plate 25, so that the pressure plate 25 pushes the push plate 23 downward, causing the hydraulic oil inside the vertical frame 2 to be transferred to the vertical frame 3 through the output pipe 26. Since the internal space of the vertical frame 3 is limited, the squeezing plate 28 will be pushed upward, causing the transfer spring 27 to contract and give way, thereby realizing the temporary storage of the hydraulic oil. After the ferrule 8 is deflected and locked, the valve 30 is opened, so that the transfer pipe 29 and the interior of the ferrule 8 are unobstructed, so that the hydraulic oil temporarily stored in the vertical frame 3 will be discharged under the elastic force of the transfer spring 27. , pushed into the ferrule 8 by the extrusion plate 28, so that the interior of the ferrule 8 is filled with hydraulic oil, so that the expansion plate 31 is pushed outward by the hydraulic oil, expanding the oil storage space inside the ferrule 8. This process will cause the expansion plate 31 to move outward and completely cover the gap between the back of the small end and the large end of the valve cover, so that the valve cover will not be able to move along the direction of the longitudinal frame 2 after being blocked by the ferrule 8, so that the valve cover can be stably combined with the hanger, and will not produce relative displacement with the hanger itself, thereby ensuring the stability of the hoisting and the subsequent alignment accuracy;

[0034] After the valve cover and the lifting device are stably combined, the support plate 11 can be reset, so that the entire device can be easily moved under the rolling action of the roller 9, so as to facilitate the easy transfer of the heavier valve cover. To a certain extent, it can replace the transfer equipment of the valve cover. When facing the transfer of a single valve cover, it is very practical and will not occupy too much or too large equipment.

[0035] Subsequently, the lifting device and the valve cover are lifted and transferred by the lifting mechanism through the hanging ear 6, so that the horizontal lathe can more conveniently clamp the outer circle of the large end of the valve cover. When the valve cover is aligned and positioned with the machine tool, the valve cover can be first moved to the vicinity of the machine tool clamping mechanism, and then the outer end of the sealing rod 21 is rotated to make the sealing rod 21 rotate around the central rotating shaft 20, so that the end of the sealing rod 21 located inside the fine-tuning box 5 is also deflected, so that the sealing rod 21 no longer blocks the hydraulic pipe 16, so that the crossbeam 4 drives the sliding rod 15 to move downward under the action of the deadweight of the valve cover, thereby driving the push slide 14 to move downward, so that the sliding The plate 14 squeezes the hydraulic oil inside the sealing cavity 12, so that it is transferred from the hydraulic pipe 16 to the upper space of the fine-tuning box 5. During this process, the hydraulic oil is continuously transferred under pressure, and the valve cover is continuously moved downward, and the downward movement speed is determined by the hydraulic oil transfer speed. Since the diameter of the hydraulic pipe 16 is small, the transfer speed of the hydraulic oil is slow, so the valve cover moves downward slowly, so that the valve cover position can be adjusted more conveniently and accurately, thereby improving the accuracy and convenience of clamping. When it is necessary to stop, only the sealing rod 21 needs to be rotated. The operation is simple and convenient, and the valve cover can be installed accurately and conveniently.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sling for a valve cover, comprising a cross frame (1), characterized in that: Two longitudinal frames (2) are fixed to the side walls of the horizontal frame (1); two vertical frames (3) are fixed to the upper end of the horizontal frame (1); a horizontal beam (4) is fixed to the upper ends of the two vertical frames (3); a fine-tuning box (5) is fixed to the upper end of the horizontal beam (4); a hanging ear (6) is fixed to the upper end of the fine-tuning box (5); a fine-tuning alignment mechanism is provided inside the fine-tuning box (5); rollers (9) are fixed to the bottoms of the horizontal frame (1) and the longitudinal frame (2); a stopper (7) is fixed to the upper ends of the two longitudinal frames (2); a stabilizing mechanism is provided on the side walls of the two longitudinal frames (2); a ferrule (8) is rotatably connected to the side wall of one of the vertical frames (3); an expansion stabilizing mechanism is provided inside the ferrule (8); a pressure-bearing mechanism is provided inside one of the longitudinal frames (2); and a pressure transfer mechanism is provided inside one of the vertical frames (3); The fine-tuning alignment mechanism comprises a transition chamber (13) and two sealed chambers (12) opened inside the fine-tuning box (5); the inner walls of the two sealed chambers (12) are sealed and slidably connected with slide plates (14); the bottoms of the two slide plates (14) are fixed with slide bars (15); the two slide bars (15) respectively penetrate the bottoms of the corresponding sealed chambers (12) and are fixed to the upper ends of the crossbeams (4); a "T"-shaped hydraulic pipe (16) is inserted through the side walls of the transition chamber (13); the hydraulic pipe (16) is connected to the insides of the two sealed chambers (12); A deflection groove (17) is formed through the side wall of the fine-tuning box (5), a sealing belt (18) is fixed to the inner wall of the deflection groove (17), a sealing rod (21) is fixed through the side wall of the sealing belt (18), the upper end of the sealing rod (21) is rotatably connected to a central shaft (20), the central shaft (20) is fixed to the inner wall of the fine-tuning box (5), a telescopic rod (19) is fixed to the end of the sealing rod (21), and the bottom of the sealing rod (21) abuts against the upper end of the hydraulic pipe (16) and blocks the hydraulic pipe (16); The stabilizing mechanism comprises two mounting plates (10) fixed to the side walls of the longitudinal frame (2), the side walls of the two mounting plates (10) being rotatably connected to a support plate (11), the support plate (11) having a flat bottom and an inclined upper surface; The pressure-bearing mechanism comprises a push plate (23) which is sealingly and slidably connected to the inner wall of the longitudinal frame (2); a return spring (22) is fixed to the push plate (23) and the inner bottom of the longitudinal frame (2); a push rod (24) is fixed to the upper end of the push plate (23); the upper end of the push rod (24) passes through the top of the longitudinal frame (2) and is fixed to a pressure plate (25); the interior of the longitudinal frame (2) is filled with hydraulic oil; The pressure transfer mechanism comprises an extrusion plate (28) which is sealingly and slidably connected to the inner wall of the vertical frame (3); a transfer spring (27) is fixed to the side wall of the extrusion plate (28) and the inner top of the vertical frame (3); an output pipe (26) and a transfer pipe (29) are inserted through the side wall of the vertical frame (3); the output pipe (26) is connected to the inside of the corresponding vertical frame (2); The expansion stabilization mechanism comprises a valve (30) installed at the upper end of the ferrule (8) and connected to the inside of the ferrule (8); one end of the transfer pipe (29) close to the valve (30) is connected to the valve (30); the inner wall of the ferrule (8) is sealed and slidably connected with an expansion plate (31); the expansion plate (31) is in a "T" shape.

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