Special lifting appliance for lifting cylinder sleeve of diesel engine

Abstract

The utility model discloses a special lifting appliance for lifting a cylinder sleeve of a diesel engine, which comprises a lifting appliance main body and a connecting component connected with a traveling track, and the connecting component is fixedly connected with the lifting appliance main body; the lifting appliance body comprises a bearing section and a lifting section, the bearing section is fixedly connected with the connecting assembly, and the lifting section extends in the direction away from the bearing section and protrudes out of the connecting assembly in the width direction of the crane rail. The special lifting appliance for lifting the cylinder sleeve of the diesel engine is fixed on the original traveling track, and the lifting section is protruded along the width direction of the traveling track, so that the special lifting appliance can be used for directly lifting objects on the outer side of the traveling track, for example, directly lifting the cylinder sleeve of the diesel engine in a nuclear power plant, preventing the cylinder sleeve from being obliquely pulled and lifted, and improving the intrinsic safety; the safety of the cylinder sleeve and other parts of the diesel engine is ensured, the operation risk is reduced, the hoisting process is simplified, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power plant maintenance, in particular to a special hoisting device for hoisting a diesel engine cylinder liner. Background Art

[0002] During the overhaul of the emergency diesel generator set at a nuclear power plant, all cylinder liners of the diesel engine need to be disassembled and assembled, and the lifting of the cylinder liners is an important part of the operation. Since the existing crane above the diesel engine cannot reach directly above the diesel engine cylinder liners, safe and effective lifting and maintenance requirements cannot be achieved.

[0003] At present, the existing cranes are still used for lifting operations. This method has the risk of tilting and slanting, poses a great safety hazard, does not meet the "Ten No Lifting" lifting requirements, and the process is very likely to cause equipment damage, thus affecting the cylinder liner maintenance and the entire diesel engine overhaul work. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a special hoisting device for hoisting a cylinder liner of a diesel engine.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a special lifting device for lifting a diesel engine cylinder liner, comprising a lifting device body and a connecting component connected to a driving track, wherein the connecting component is fixedly connected to the lifting device body;

[0006] The sling body comprises a load-bearing section and a hoisting section, the load-bearing section is fixedly connected to the connecting assembly, and the hoisting section extends in a direction away from the load-bearing section and protrudes from the connecting assembly along the width direction of the vehicle track.

[0007] Preferably, in the special lifting device for lifting the diesel engine cylinder liner described in the utility model, the connecting assembly includes a first connecting member and a second connecting member connected to opposite sides of the traveling track, the first connecting member is detachably connected to the first end of the load-bearing section, the second connecting member is detachably connected to the second end of the load-bearing section, and the second end of the load-bearing section is closer to the lifting section than the first end of the load-bearing section.

[0008] Preferably, in the special lifting device for lifting the cylinder liner of a diesel engine described in the utility model, the first connecting member includes a first connecting section connected to the vehicle track and a first abutting section abutting against the load-bearing section, the first abutting section protrudes from the first connecting section and extends along the thickness direction of the first connecting section, and the width of the first abutting section along the width direction of the vehicle track is smaller than the width of the first connecting section along the width direction of the vehicle track;

[0009] The second connecting member includes a second connecting section connected to the vehicle track and a second abutting section abutting the load-bearing section, the second abutting section protrudes from the second connecting section and extends along the thickness direction of the second connecting section, and the width of the second abutting section along the width direction of the vehicle track is smaller than the width of the second connecting section along the width direction of the vehicle track.

[0010] Preferably, in the special lifting device for lifting the diesel engine cylinder liner described in the utility model, the connecting assembly also includes a clamping member and a plurality of fastening assemblies for clamping the traveling track, the clamping member is arranged on the outer side of the traveling track away from the lifting device body, and is detachably connected to the first connecting section, the second connecting section and the load-bearing section through a plurality of the fastening assemblies to enhance the bearing force.

[0011] Preferably, in the special lifting device for lifting the diesel engine cylinder liner described in the utility model, the fastening assembly includes two screw groups and a plurality of nuts matching the screw groups, the two screw groups are arranged on opposite sides of the traveling track, and any one of the screws in the screw groups is respectively connected and fixed to the clamping piece, one of the first connecting section and the second connecting section, and the load-bearing section through the nut.

[0012] Preferably, in the special lifting device for lifting the cylinder liner of a diesel engine described in the utility model, the screw rod group includes at least two screw rods, and any one of the screw rods is threadedly engaged with at least three of the nuts.

[0013] Preferably, in the special lifting device for lifting the diesel engine cylinder liner of the utility model, the lifting section is provided with a plurality of lifting holes, and the lifting holes are arranged at intervals along the axial direction of the lifting section.

[0014] Preferably, in the special lifting device for lifting the diesel engine cylinder liner of the utility model, the distance between at least one of the lifting holes and the driving track is 330 mm to 430 mm.

[0015] Preferably, in the special lifting device for lifting the diesel engine cylinder liner of the utility model, the lifting holes include at least two, and the spacing between adjacent lifting holes is 40 mm to 60 mm.

[0016] Preferably, in the special lifting device for lifting the diesel engine cylinder liner of the utility model, the pressing member, the first connecting section and the second connecting section are respectively plates;

[0017] The cross section of the sling body is T-shaped.

[0018] By implementing the utility model, the following beneficial effects are achieved:

[0019] The special lifting device for lifting the diesel engine cylinder liner of the utility model is fixed on the original driving track, and the lifting section is made to protrude along the width direction of the driving track. It can be used to directly lift objects located on the outside of the driving track, for example, directly lift the diesel engine cylinder liner in a nuclear power plant, prevent the cylinder liner from being tilted or lifted at an angle, improve the inherent safety, ensure the safety of the cylinder liner and other parts of the diesel engine, reduce the operation risk, simplify the lifting process, and improve the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 It is a schematic diagram of the overall structure of a special lifting device for lifting a diesel engine cylinder liner according to an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 Installation diagram of special lifting equipment for diesel engine cylinder liner lifting. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The driving track mentioned in the present invention is an existing driving track in a nuclear power plant, which is generally an I-shaped steel structure. The following will be discussed by taking the I-shaped driving track as an example.

[0028] See also Figure 1 and Figure 2 One embodiment of the utility model discloses a special lifting device for lifting diesel engine cylinder liners, which can be used to directly lift diesel engine cylinder liners in nuclear power plants. It can be understood that in some other embodiments, the special lifting device for lifting diesel engine cylinder liners can also be used for lifting other objects outside the driving track in similar situations, and the utility model does not limit this.

[0029] The diesel engine cylinder liner hoisting special hoist comprises a hoist body 1 and a connecting assembly 2 connected to a traveling track, wherein the connecting assembly 2 is fixedly connected to the hoist body 1, and the connecting assembly 2 is connected and fixed to the traveling track to fix the hoist body 1 on the traveling track. Preferably, the cross section of the hoist body 1 is T-shaped, and the upper part of the hoist body 1 abuts against the traveling track.

[0030] The sling body 1 includes a load-bearing section 11 and a hoisting section 12. The load-bearing section 11 is connected and fixed to the connecting assembly 2. The hoisting section 12 extends away from the load-bearing section 11 and protrudes from the connecting assembly 2 along the width direction of the vehicle track. Figure 1 The part located on the right side and protruding from the connecting assembly 2 is the lifting part, which is used to connect existing lifting tools such as lifting ropes and hooks. The part located on the left side and connected to the connecting assembly 2 is the load-bearing part, which is used to bear the weight. It can be understood that the division position of the load-bearing section 11 and the lifting section 12 is not unique, and is specifically divided according to the actual structural function.

[0031] Furthermore, the hoisting section 12 is provided with a plurality of hoisting holes 121, and the hoisting holes 121 are arranged at intervals along the axial direction of the hoisting section 12. Preferably, the hoisting holes 121 are arranged at the lower position of the T-shape. Figure 2 In the direction, the hoisting holes 121 are arranged at intervals along the lateral direction, that is, at intervals along the width direction of the traveling track, and extend to the outside of the traveling track to increase the hanging points and meet the straight hanging requirements of the cylinder liner in greater quantities.

[0032] Further, the distance between at least one hoisting hole 121 and the vehicle track is 330 mm to 430 mm, such as 340 mm, 360 mm or 380 mm. Figure 2 The distance between the lifting hole 121 and the vehicle track is measured at two ends, which is the distance between the rightmost end of the vehicle track and the center of the lifting hole 121. Preferably, there are at least two lifting holes 121, and the distance between adjacent lifting holes 121 is 40 mm to 60 mm, such as 40 mm, 50 mm or 60 mm.

[0033] Understandably, see Figure 2 In this embodiment, three hoisting holes 121 are provided. From left to right, the distance between the first hoisting hole 121 and the vehicle track is 380 mm, the distance between the second hoisting hole 121 and the first hoisting hole 121 is 50 mm, which is equivalent to the distance between the first hoisting hole 121 and the vehicle track is 430 mm, and the distance between the third hoisting hole 121 and the second hoisting hole 121 is 50 mm, which is equivalent to the distance between the third hoisting hole 121 and the vehicle track is 480 mm. The distance between the first hoisting hole 121 and the second hoisting hole 121 and the vehicle track is within the range of 330 mm to 430 mm. In actual application, a suitable hoisting point can be selected according to the cylinder liner position on site for hoisting operation.

[0034] Furthermore, the connecting assembly 2 includes a first connecting member 21 and a second connecting member 22 connected to opposite sides of the vehicle track, the first connecting member 21 is detachably connected to the first end of the load-bearing section 11, and the second connecting member 22 is detachably connected to the second end of the load-bearing section 11, and the second end of the load-bearing section 11 is closer to the lifting section 12 than the first end of the load-bearing section 11.

[0035] Furthermore, the first connecting member 21 includes a first connecting section 211 connected to the vehicle track and a first abutting section 212 abutting against the load-bearing section 11, the first abutting section 212 protrudes from the first connecting section 211 and extends along the thickness direction of the first connecting section 211, and the width of the first abutting section 212 along the width direction of the vehicle track is smaller than the width of the first connecting section 211 along the width direction of the vehicle track.

[0036] The second connecting member 22 includes a second connecting section 221 connected to the vehicle track and a second abutting section 222 abutting against the load-bearing section 11, the second abutting section 222 protrudes from the second connecting section 221 and extends along the thickness direction of the second connecting section 221, and the width of the second abutting section 222 along the width direction of the vehicle track is smaller than the width of the second connecting section 221 along the width direction of the vehicle track. Preferably, the first connecting section 211 and the second connecting section 221 are respectively plate structures, which can better fit the contact surface of the vehicle track.

[0037] Furthermore, the connection assembly 2 also includes a clamping member 23 and a plurality of fastening assemblies 24 for clamping the traveling track. The clamping member 23 is arranged on the outside of the traveling track away from the main body 1 of the sling, and is detachably connected to the first connecting section 211, the second connecting section 221 and the load-bearing section 11 through the plurality of fastening assemblies 24 to strengthen the load-bearing force. In addition, the clamping member 23 is also used to balance the force to prevent the entire diesel engine cylinder liner hoisting special sling from tilting or deforming. Preferably, the clamping member 23 is a plate structure that is completely in contact with the upper end surface of the traveling track.

[0038] Furthermore, the fastening assembly 24 includes two screw rod 241 groups and a plurality of nuts 242 matching the screw rod 241 groups. The two screw rod 241 groups are arranged on opposite sides of the vehicle track, and any screw rod 241 in the screw rod 241 group is respectively connected and fixed to the clamping member 23, one of the first connecting section 211 and the second connecting section 221, and the load-bearing section 11 through the nut 242.

[0039] Furthermore, the screw rod 241 group includes at least two screw rods 241, and any one of the screw rods 241 is threadedly engaged with at least three nuts 242. Figure 2 direction, taking the rightmost screw 241 as an example, the screw 241 passes through the clamping piece 23, the second connecting section 221 and the load-bearing section 11 respectively. Counting from top to bottom, the first nut 242 is screwed on the screw 241 and abuts against the clamping piece 23 to press the clamping piece 23 on the travel track. The second nut 242 is screwed on the screw 241 and abuts against the second connecting section 221, and the third nut 242 is screwed on the screw 241 and abuts against the load-bearing section 11. The travel track is clamped between the second connecting section 221 and the load-bearing section 11 by the second nut 242 and the third nut 242 to fix the sling body 1 and provide a firm fulcrum for the lifting section 12. It can be understood that the connection relationship of the other screws 241 and nuts 242 is the same and will not be repeated here.

[0040] By implementing the utility model, the following beneficial effects are achieved:

[0041] The special lifting device for lifting the diesel engine cylinder liner of the utility model is fixed on the original driving track, and the lifting section 12 is made to protrude along the width direction of the driving track. It can be used to directly lift objects located on the outside of the driving track, for example, directly lift the diesel engine cylinder liner in a nuclear power plant, prevent the cylinder liner from being tilted or lifted at an angle, improve the inherent safety, ensure the safety of the cylinder liner and other parts of the diesel engine, reduce the operation risk, simplify the lifting process, and improve the operation efficiency.

[0042] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the utility model; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A special lifting device for lifting diesel engine cylinder liner, characterized in that: It comprises a sling body (1) and a connection assembly (2) connected to a vehicle track, wherein the connection assembly (2) is fixedly connected to the sling body (1); The sling body (1) comprises a load-bearing section (11) and a lifting section (12); the load-bearing section (11) is fixedly connected to the connecting component (2); and the lifting section (12) extends in a direction away from the load-bearing section (11) and protrudes from the connecting component (2) along the width direction of the vehicle track.

2. The special lifting device for lifting the cylinder liner of a diesel engine according to claim 1 is characterized in that: The connecting assembly (2) comprises a first connecting member (21) and a second connecting member (22) connected to opposite sides of the vehicle track, the first connecting member (21) being detachably connected to the first end of the load-bearing section (11), the second connecting member (22) being detachably connected to the second end of the load-bearing section (11), and the second end of the load-bearing section (11) being closer to the hoisting section (12) than the first end of the load-bearing section (11).

3. The special lifting device for lifting the cylinder liner of a diesel engine according to claim 2 is characterized in that: The first connecting member (21) comprises a first connecting section (211) connected to the vehicle track and a first abutting section (212) abutting against the load-bearing section (11); the first abutting section (212) protrudes from the first connecting section (211) and extends along the thickness direction of the first connecting section (211); and the width of the first abutting section (212) along the width direction of the vehicle track is smaller than the width of the first connecting section (211) along the width direction of the vehicle track; The second connecting member (22) comprises a second connecting section (221) connected to the vehicle track and a second abutting section (222) abutting against the load-bearing section (11); the second abutting section (222) protrudes from the second connecting section (221) and extends along the thickness direction of the second connecting section (221); and the width of the second abutting section (222) along the width direction of the vehicle track is smaller than the width of the second connecting section (221) along the width direction of the vehicle track.

4. The special lifting device for lifting the cylinder liner of a diesel engine according to claim 3 is characterized in that: The connecting assembly (2) also includes a clamping member (23) and a plurality of fastening members (24) for clamping the traveling track. The clamping member (23) is arranged on the outer side of the traveling track away from the sling body (1), and is detachably connected to the first connecting section (211), the second connecting section (221) and the load-bearing section (11) through the plurality of fastening members (24) to enhance the load-bearing capacity.

5. The special lifting device for lifting the cylinder liner of a diesel engine according to claim 4, characterized in that: The fastening assembly (24) comprises two screw rod (241) groups and a plurality of nuts (242) matched with the screw rod (241) groups. The two screw rod (241) groups are arranged on opposite sides of the vehicle track, and any one of the screw rods (241) in the screw rod (241) groups is respectively connected and fixed to the pressing member (23), one of the first connecting section (211) and the second connecting section (221), and the load-bearing section (11) through the nut (242).

6. The special lifting device for lifting the cylinder liner of a diesel engine according to claim 5, characterized in that: The screw rod (241) group comprises at least two screw rods (241), and any one of the screw rods (241) is threadedly engaged with at least three of the nuts (242).

7. The special lifting device for lifting the cylinder liner of a diesel engine according to any one of claims 1 to 6, characterized in that: The hoisting section (12) is provided with a plurality of hoisting holes (121), and the hoisting holes (121) are arranged at intervals along the axial direction of the hoisting section (12).

8. The special lifting device for lifting the cylinder liner of a diesel engine according to claim 7, characterized in that: The distance between at least one of the hoisting holes (121) and the vehicle track is 330 mm to 430 mm.

9. The special lifting device for lifting diesel engine cylinder liner according to claim 7, characterized in that: The hoisting holes (121) include at least two, and the spacing between adjacent hoisting holes (121) is 40 mm to 60 mm.

10. The special lifting device for lifting the cylinder liner of a diesel engine according to any one of claims 4 to 6, characterized in that: The pressing member (23), the first connecting section (211) and the second connecting section (221) are respectively plate bodies; The cross section of the sling body (1) is T-shaped.

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