Lifting tool for rocker arm supporting flange

Abstract

The utility model relates to the technical field of diesel engine manufacturing, and discloses a lifting tool for a rocker arm supporting flange, which comprises the rocker arm supporting flange and a lifting tool, a lubricating oil pipe connecting opening and a plurality of combined threaded holes distributed in the circumferential direction of the lubricating oil pipe connecting opening are formed in the flange plate, the lifting tool comprises a bottom plate, a main lifting plate, lifting lugs, reinforcing ribs, fixing pieces and combined bolts, and the main lifting plate is fixed to the top of the bottom plate. According to the lifting tool, through reasonable material selection and structural design, safety and stability in the installation process are guaranteed, safety accidents caused by bolt collapse and breakage are avoided, a lifting point in the use process of the lifting tool is arranged on the extension line of the gravity center of the rocker arm supporting flange, and the service life of the rocker arm supporting flange is prolonged. The problems of unbalance, inclination and the like of the workpiece in the lifting process are avoided, the rocker arm supporting flange is kept in a vertical state, and installation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the diesel engine manufacturing technical field, concretely is a kind of hoisting tool for rocker arm support flange. BACKGROUND

[0002] With the continuous development of shipping industry, the size of marine low-speed diesel engine is also continuously improved, and the corresponding size and weight of parts are gradually increased, which poses a severe challenge to the production and assembly of diesel engines. In the production and manufacturing process, these large-sized, heavy and irregularly shaped parts are the most important part affecting production efficiency, and the rocker arm support flange is one of them. Its overall shape is similar to a cow's nose, composed of a flange plate and a support. Multiple through holes are provided around the edge of the flange plate for connection with the rack, and threaded holes are provided at the connection between the middle of the flange and the main lubricating oil pipe and the crosshead lubricating oil pipe. The support is connected to the upper part of the rocker arm.

[0003] Currently, the assembly process of the rocker arm support flange is to use the top through hole to cooperate with the bolt and the steel wire rope to lift and install it. There is no special lifting tool, and the above lifting method has many shortcomings: first, there is a certain safety hazard. The weight of the rocker arm support flange exceeds 100KG, and only one bolt is subjected to stress during lifting. If the bolt breaks or collapses, it will cause serious consequences. Second, the flange cannot be kept vertical after lifting at the present stage, which causes great inconvenience to on-site installation. Therefore, the existing lifting method has the defects of high operation difficulty and low work efficiency, and there is a great safety hazard in the operation process. UTILITY MODEL CONTENTS

[0004] In view of the shortcomings of the prior art, the utility model provides a hoisting tool for rocker arm support flange, which solves the problems raised in the background art.

[0005] The utility model provides the following technical scheme: a hoisting tool for rocker arm support flange, comprising a rocker arm support flange and a hoisting tool. The rocker arm support flange is composed of a support and a flange plate, and the flange plate is provided with a lubricating oil pipe connecting port and a plurality of combination threaded holes arranged circumferentially along the lubricating oil pipe connecting port. The hoisting tool comprises a bottom plate, a main lifting plate, a lifting lug, a reinforcing rib, a fixing member and a combination bolt. The main lifting plate is fixed on the top of the bottom plate, and the reinforcing rib is nested in the connection between the main lifting plate and the bottom plate as a reinforcing structure.

[0006] The bottom of the lifting lug is fixed to the top surface of one end of the main lifting plate, the bottom of the bottom plate is provided with a clearance hole, the number of the clearance holes is the same as the number of the combined bolts and is not less than two, and the adjacent two clearance holes can be aligned with the corresponding number of combined threaded holes on the flange plate in turn, the combined bolts can be used to limit the flange plate and the bottom plate in a combined state, and the main lifting plate is located directly above the gravity center of the rocker arm supporting flange.

[0007] The fixed part is fixed to the surface of the bottom plate, and a plurality of receiving screw holes are formed in the interior of the bottom plate, the receiving screw holes can be threadedly connected with the combined bolts, thereby providing a receiving use condition for the combined bolts in an idle state, and thereby avoiding the problem of loss.

[0008] The bottom plate, the main lifting plate, the lifting lug, the reinforcing rib, the fixed part and the combined bolts in the lifting tool are made of steel material, the length of the flange plate is less than the distance from the outer surface of the flange plate to the rack, so as to avoid interference during installation.

[0009] The bottom plate is fixed with a reinforcing plate body on one side of the bottom, and an assembly groove is formed in the interior of the reinforcing plate body and the interior of the bottom plate, the assembly groove is sleeved with an adjusting plate, a plurality of through holes are formed in the interior of the adjusting plate, the through holes are sleeved with the combined bolts, and the plurality of through holes can adapt the lifting workpiece to different flange plates of different models, so as to meet the general use requirement.

[0010] The front and rear end inner walls of the assembly groove are fixed with inner thread sleeve plates, the adjusting plate is internally provided with a countersunk hole aligned with the inner thread sleeve plates, and a limiting screw is sleeved in the countersunk hole and is screw-coupled with the inner thread sleeve plate, so that the limiting screw and the inner thread sleeve plate are cooperatively assembled, the use stability of the adjusting plate in the assembly groove is ensured, and favorable conditions are provided for subsequent replacement and maintenance of the adjusting plate.

[0011] The side surface of one side of the adjusting plate and the side surface of one side of the bottom plate are coplanar, and the side surface of the other side of the adjusting plate and the side surface of one side of the reinforcing plate body are coplanar, so as to avoid structural interference in the subsequent operation process.

[0012] The limiting screw can be completely sleeved in the countersunk hole, so as to avoid structural interference in the use process, and the number of the countersunk holes is the same as the number of the inner thread sleeve plates and is less than two, so as to ensure the subsequent connection strength.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The lifting tool of the utility model is ensured safety and stability in the installation process through reasonable material selection and structure design, avoids safety accidents caused by bolt collapse and fracture.

[0015] 2. The lifting tool of the utility model is avoided workpiece imbalance, inclination and other problems in the lifting process, makes the rocker arm support flange keep vertical state, and is convenient for installation.

[0016] 3. The lifting tool of the utility model can reduce operation difficulty and work intensity, improves operation efficiency, guarantees the safety and convenience of lifting operation, and has positive auxiliary effect on improving the assembly and manufacturing efficiency of marine low-speed diesel engine. DRAWINGS

[0017] Figure 1 It is the front view schematic diagram of the structure embodiment one of the utility model;

[0018] Figure 2 It is the three-dimensional schematic diagram of the structure embodiment one of the utility model;

[0019] Figure 3 It is the right view schematic diagram of the structure embodiment one of the utility model;

[0020] Figure 4 It is the left view schematic diagram of the structure bottom plate of the utility model;

[0021] Figure 5 It is the right view schematic diagram of the structure bottom plate of the utility model;

[0022] Figure 6 It is the front view schematic diagram of the structure embodiment two of the utility model;

[0023] Figure 7 It is the right view schematic diagram of the structure reinforcing plate body of the utility model;

[0024] Figure 8 It is the right view schematic diagram of the structure assembly groove of the utility model;

[0025] Figure 9 It is the left view schematic diagram of the structure internal thread sleeve plate of the utility model;

[0026] Figure 10 It is the three-dimensional schematic diagram of the structure adjusting plate of the utility model;

[0027] Figure 11 It is the left view schematic diagram of the structure adjusting plate of the utility model.

[0028] In the figure: 1, support; 2, flange plate; 3, lubricating oil pipe connecting port; 4, combined threaded hole; 5, bottom plate; 6, main lifting plate; 7, lifting lug; 8, reinforcing rib; 9, fixing piece; 10, combined bolt; 11, reinforcing plate body; 12, assembly groove; 13, internally threaded sleeve plate; 14, adjusting plate; 15, limiting screw; 16, through hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Embodiment one

[0031] Please refer to Figures 1-5 A hoisting tool for a rocker arm support flange, comprising a rocker arm support flange, a hoisting tool, the rocker arm support flange is composed of a support 1 and a flange plate 2, and the flange plate 2 is provided with a lubricating oil pipe connecting port 3 and a plurality of combined threaded holes 4 arranged circumferentially along the lubricating oil pipe connecting port 3, the hoisting tool comprises a bottom plate 5, a main lifting plate 6, a lifting lug 7, a reinforcing rib 8, a fixing piece 9 and a combined bolt 10, the main lifting plate 6 is fixed on the top of the bottom plate 5, and the reinforcing rib 8 is nested in the connection between the main lifting plate 6 and the bottom plate 5 as a reinforcing structure;

[0032] The bottom of the lifting lug 7 is fixed on the top surface of one end of the main lifting plate 6, and the bottom of the bottom plate 5 is provided with a clearance hole, the number of the clearance holes is the same as the number of the combined bolts 10 and is not less than two, and the adjacent two clearance holes can be aligned with the corresponding number of combined threaded holes 4 on the flange plate 2 in turn, and the combined bolts 10 can limit the flange plate 2 and the bottom plate 5 in a combined state by penetrating the clearance holes and being screwed with the combined threaded holes 4, and in the assembled state of the flange plate 2 and the bottom plate 5, the main lifting plate 6 is located directly above the center of gravity of the rocker arm support flange;

[0033] The bottom plate 5, the main lifting plate 6, the lifting lug 7, the reinforcing rib 8, the fixing piece 9 and the combined bolt 10 inside the hoisting tool are all made of steel material, the length of the flange plate 2 is less than the distance from the outer surface of the flange plate 2 to the rack, so as to avoid interference during installation, the fixing piece 9 is fixed on the surface of the bottom plate 5, and a plurality of receiving screw holes are provided in the inside of the bottom plate 5, the receiving screw holes can be screwed with the combined bolts 10, thereby providing receiving and using conditions for the idle combined bolts 10, and then avoiding the problem of loss.

[0034] In use, one end of the two combined bolts 10 is respectively threaded through the two clearance holes on the bottom of the support 1, and then screwed into the corresponding two combined threaded holes 4 to the maximum stroke of the combined bolt 10, after completion, the assembly is fixed by using the shackle, wire rope or sling through the lifting lug 7, and then the existing lifting equipment is used to lift the rocker arm support flange, and then the rocker arm support flange is lifted to the corresponding position on the existing rack after the rocker arm support flange is stable, then the flange plate 2 is assembled with the rack through the connecting holes around the flange plate 2, after installation, the shackle, wire rope or sling and lifting tool are removed, and the next time it can be used.

[0035] Embodiment two

[0036] Please refer to Figures 6-11 The bottom plate 5 is fixed with a reinforcing plate body 11 on one side of the bottom, and the inside of the reinforcing plate body 11 and the inside of the bottom plate 5 are jointly provided with an assembly groove 12, the inside of the assembly groove 12 is sleeved with an adjusting plate 14, a plurality of through holes 16 are formed in the inside of the adjusting plate 14, and the through holes 16 can be sleeved with the combined bolts 10, and the plurality of through holes 16 can adapt to different models of flange plates 2 for lifting workpieces, and meet the general use requirements.

[0037] The front and rear end inner walls of one side of the assembly groove 12 are fixed with inner threaded sleeve plates 13, the inside of the adjusting plate 14 is provided with counterbores which are aligned with the inner threaded sleeve plates 13, and the counterbores are sleeved with limiting screws 15 which are screwed with the inner threaded sleeve plates 13, the cooperation and assembly of the limiting screws 15 and the inner threaded sleeve plates 13 can ensure the stable use of the adjusting plate 14 in the assembly groove 12, and provide favorable conditions for subsequent replacement and maintenance of the adjusting plate 14, the side surface of one side of the adjusting plate 14 and the side surface of one side of the bottom plate 5 are coplanar, and the side surface of the other side of the adjusting plate 14 and the side surface of one side of the reinforcing plate body 11 are coplanar, so as to avoid structural interference in subsequent operation process, the limiting screws 15 can be completely sleeved in the counterbores, so as to avoid structural interference in use process, and the number of the counterbores is the same as the number of the inner threaded sleeve plates 13 and is less than two, so as to ensure the connection strength.

[0038] In use, one end of the two combined bolts 10 is respectively threaded through the two clearance holes on the bottom of the support 1, and then screwed into the corresponding two combined threaded holes 4 to the maximum stroke of the combined bolt 10, after completion, the assembly is fixed by using the shackle, wire rope or sling through the lifting lug 7, and then the existing lifting equipment is used to lift the rocker arm support flange, and then the rocker arm support flange is lifted to the corresponding position on the existing rack after the rocker arm support flange is stable, then the flange plate 2 is assembled with the rack through the connecting holes around the flange plate 2, after installation, the shackle, wire rope or sling and lifting tool are removed, and the next time it can be used;

[0039] When the type of the rocker arm supporting flange changes, the plurality of through holes 16 in the adjusting plate 14 can satisfy the alignment and accommodation requirements of the combined threaded holes 4 in the different types of rocker arm supporting flanges, thereby ensuring the versatility of the lifting tool.

[0040] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. In the drawings of the utility model, the filling pattern is only for distinguishing layers and does not have any other limitation.

[0041] Although the embodiments of the utility model have been shown and described, it should be understood that, for those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hoisting tool for rocker arm support flange, comprising a rocker arm support flange, a hoisting tool, the rocker arm support flange is composed of a support piece (1) and a flange plate (2), and the flange plate (2) is provided with a lubricating oil pipe connecting port (3) and a plurality of combined threaded holes (4) arranged and distributed along the circumference of the lubricating oil pipe connecting port (3), characterized in that: The lifting tool comprises a bottom plate (5), a main lifting plate (6), a lifting lug (7), a reinforcing rib (8), a fixing part (9) and a combination bolt (10), the main lifting plate (6) is fixed on the top of the bottom plate (5), and the reinforcing rib (8) is nested in the connection part of the main lifting plate (6) and the bottom plate (5) as a reinforcing structure; The bottom of the lifting lug (7) is fixed on the top surface of one end of the main lifting plate (6), the bottom of the bottom plate (5) is provided with a clearance hole, the number of the clearance holes is the same as that of the combination bolts (10) and is not less than two, and the adjacent two clearance holes can be aligned with the corresponding number of combination threaded holes (4) on the flange plate (2) in sequence, the combination bolt (10) can be used to limit the flange plate (2) and the bottom plate (5) in the form of penetrating the clearance hole and being screw-coupled with the combination threaded hole (4), and in the assembled state of the flange plate (2) and the bottom plate (5), the main lifting plate (6) is located directly above the gravity center of the rocker arm supporting flange.

2. A lifting tool for a rocker arm support flange according to claim 1, characterized in that: The fixing part (9) is fixed on the surface of the bottom plate (5), and a plurality of receiving screw holes are formed in the inside of the bottom plate (5), and the receiving screw holes can be threadedly connected with the combination bolts (10).

3. A lifting tool for a rocker arm support flange according to claim 1, characterized in that: The bottom plate (5), the main lifting plate (6), the lifting lug (7), the reinforcing rib (8), the fixing part (9) and the combination bolt (10) in the lifting tool are all made of steel material.

4. A lifting tool for a rocker arm support flange according to claim 1, characterized in that: The bottom plate (5) is fixed with a reinforcing plate body (11) on one side of the bottom, and an assembly groove (12) is formed in the inside of the reinforcing plate body (11) and the inside of the bottom plate (5), the inside of the assembly groove (12) is sleeved with an adjusting plate (14), a plurality of through holes (16) are formed in the inside of the adjusting plate (14), and the through holes (16) can be sleeved with the combination bolts (10).

5. A lifting tool for a rocker arm support flange according to claim 4, characterized in that: The front and rear end inner walls of one side of the assembly groove (12) are both fixed with an internal thread sleeve plate (13), the inside of the adjusting plate (14) is provided with a countersunk hole which can be aligned with the internal thread sleeve plate (13), and the countersunk hole is sleeved with a limiting screw (15) which can be screw-coupled with the internal thread sleeve plate (13).

6. A lifting tool for a rocker arm support flange according to claim 4, characterized in that: The side surface of one side of the adjusting plate (14) and the side surface of one side of the bottom plate (5), and the side surface of the other side of the adjusting plate (14) and the side surface of one side of the reinforcing plate body (11) are coplanarly arranged.

7. A lifting tool for a rocker arm support flange according to claim 5, characterized in that: The limiting screw (15) can be completely sleeved in the countersunk hole, and the number of the countersunk holes is the same as that of the internal thread sleeve plates (13) and is less than two.

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