CN114012409A

CN114012409A - Dismounting device, and cooling water pipe mounting method and dismounting method thereof

Info

Publication number: CN114012409A
Application number: CN202111565195.0A
Authority: CN
Inventors: 沈翔; 王聪; 王和旭; 王丽杰; 王哲; 戴成龙
Original assignee: Shanghai Marine Diesel Engine Research Institute
Current assignee: Shanghai Marine Diesel Engine Research Institute
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-02-08

Abstract

The invention relates to a dismounting device, a cooling water pipe mounting method and a cooling water pipe dismounting method. The disassembly and assembly device comprises a stop block assembly, a first screw and a second screw, wherein the stop block assembly comprises a stop block, a side edge and the first screw, the first screw is arranged on the stop block, the shape of the stop block is matched with the shape of the sleeve, two sides of the stop block in the width direction extend inwards along the radial direction of the cooling water pipe and form the side edge, the stop block, the side edge and the cooling water pipe are matched to form a space for accommodating part of the sleeve, and the first screw is used for fixing the sleeve; the fixed clamp assembly comprises a pair of fixed clamps, a second screw and a bolt, the end portions of the fixed clamps are opposite and connected through the second screw, the second screw is screwed so that the fixed clamps are mutually close and can be hooped on the cooling water pipe, and the bolt is arranged on the fixed clamps along the axial direction of the cooling water pipe. The invention provides a dismounting device, a cooling water pipe mounting method and a dismounting method thereof, which are convenient to assemble, safe and reliable.

Description

Dismounting device, and cooling water pipe mounting method and dismounting method thereof

Technical Field

The invention relates to the technical field of diesel engine manufacturing, in particular to a dismounting device, a cooling water pipe mounting method and a dismounting method thereof.

Background

Along with the increasing compactness and modularization design degree of a novel diesel engine, a cooling water pipe of the novel diesel engine also shows the trend of integrated and lightweight design. Especially in a high-speed machine with a high power density index, a thin-wall cooling water pipe is mostly arranged at the top of a cylinder cover, and the cooling water pipes among cylinders are generally connected through a sleeve to play a sealing role. And the conventional dismounting tool cannot meet the requirement of compact maintenance space. This form of assembly causes the following problems:

(1) the cooling water pipe and the sleeve adopt a sealing ring form, the fit clearance is small, the sealing ring needs to be installed by external force after being installed, and the wall thickness of the sleeve is thin and can only be knocked by a copper bar, so that parts are easy to damage or deform;

(2) the copper rod can be knocked in a single point only, so that the stress on the circumferential direction of the sleeve is uneven, the sleeve cannot horizontally move along the axis of the cooling water pipe, parts are easily clamped and the sealing ring is easily sheared, the assembly effect is difficult to ensure, and the assembly and disassembly process is very troublesome;

(3) the stress point is small, and the operating personnel are injured due to the fact that the operating personnel easily slip when the operating personnel is knocked.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a dismounting device, a cooling water pipe mounting method and a dismounting method thereof, which are convenient to assemble, safe and reliable.

Specifically, the invention provides a dismounting device, which is suitable for a diesel engine, wherein the diesel engine comprises a cooling water pipe and a sleeve, the sleeve is sleeved on the connecting position of the cooling water pipe to form a sealing structure, and the dismounting device comprises:

the stop block assembly comprises a stop block, a side edge and a first screw arranged on the stop block, the shape of the stop block is matched with the shape of the sleeve, two sides of the stop block in the width direction extend inwards along the radial direction of the cooling water pipe and form the side edge, the stop block, the side edge and the cooling water pipe are matched to form a space for accommodating part of the sleeve, and the first screw is used for fixing the sleeve;

fixed clamp subassembly, including a pair of fixed clamp, second screw and bolt, it is a pair of the tip of fixed clamp is relative and pass through the second screwed connection, screws the second screw is so that it is a pair of fixed clamp draws close each other and can the cuff be in on the condenser tube, the bolt is followed condenser tube's axis direction sets up on the fixed clamp, rotates the bolt, so that the bolt removes and can drive the dog subassembly is followed condenser tube's axis direction is upwards removed.

According to one embodiment of the invention, a rubber pad is provided on the inner wall of the stopper.

According to one embodiment of the invention, the stopper is provided with threaded holes along both ends in the arc length direction, the first screw is fixed with the threaded holes in a matching manner, and the end part of the first screw passes through the stopper and abuts against the sleeve.

According to one embodiment of the invention, the threaded hole is obliquely arranged on the stop.

According to one embodiment of the invention, the end of the first screw is hemispherical.

According to one embodiment of the invention, the first screw is made of copper material.

According to one embodiment of the invention, a protective rubber is provided on the inner surface of the fixing clip.

According to one embodiment of the invention, the length of the bolt is equal to or greater than 80 cm.

The invention also provides a method for disassembling the cooling water pipe, which adopts any one of the disassembling devices, wherein a sleeve is arranged at the connecting position of the cooling water pipe, the sleeve is sleeved outside the periphery of the connecting position to form a sealing structure, and the disassembling method comprises the following steps:

s1, sleeving the fixed hoop assembly on the cooling water pipe, and screwing the second screw; installing the stop block assembly outside the sleeve and screwing the first screw;

s2, rotating a plurality of bolts alternately to enable the bolts to move and drive the stop block assembly to move along the axial direction of the cooling water pipe, wherein the stop block assembly drives the sleeve to be separated from the connecting position of the cooling water pipe;

s3, unscrewing the second screw, taking down the fixed hoop component, unscrewing the first screw and taking down the stop block component.

The invention also provides a method for installing the cooling water pipe, which adopts any one of the dismounting devices, the cooling water pipe is provided with a sleeve, and the method for installing the cooling water pipe comprises the following steps:

t1, sleeving the fixed hoop assembly on the cooling water pipe, and screwing the second screw; installing the stop block assembly outside the sleeve and screwing the first screw;

t2, rotating a plurality of bolts alternately to make the bolts move and drive the stop block component to move along the axis direction of the cooling water pipe, wherein the stop block component drives the sleeve to reach the connection position of the cooling water pipe to seal the connection position;

t3, unscrewing the second screw, removing the fixed clip assembly, unscrewing the first screw, removing the stop assembly.

According to the dismounting device, the mounting method and the dismounting method of the cooling water pipe, the stop block assembly is matched with the fixed hoop assembly, so that the whole assembly is convenient, safe and reliable.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Drawings

The accompanying drawings, which are included to provide a further explanation of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 shows a perspective view of a cooling water pipe and a jacket pipe to which the present invention is applied.

Fig. 2 shows a schematic structural diagram of the dismounting device according to an embodiment of the present invention.

FIG. 3 shows a schematic block diagram of a stop assembly according to an embodiment of the present invention.

Figure 4 illustrates a use state diagram of a stop assembly according to one embodiment of the present invention.

Figure 5 shows a schematic view of a mounting clip assembly according to one embodiment of the present invention.

Fig. 6 is a block flow diagram illustrating a method for disassembling the cooling water pipe according to an embodiment of the present invention.

Fig. 7 is a schematic view illustrating a cooling water pipe according to an embodiment of the present invention in a disassembly process.

FIG. 8 is a schematic view of a cooling water pipe according to an embodiment of the present invention after disassembly.

Fig. 9 is a block flow diagram illustrating a method of installing a cooling water pipe according to an embodiment of the present invention.

Fig. 10 is a schematic view showing a cooling water pipe according to an embodiment of the present invention during installation.

FIG. 11 is a schematic view of a cooling water pipe according to an embodiment of the present invention after installation.

Wherein the figures include the following reference numerals:

cylinder head 101

Cooling water pipe 102

Sleeve 103

Sealing ring 104

Wire retainer ring 105

Dismounting device 200

Stop block assembly 201

Securing clip assembly 202

Stop 203

Side edge 204

First screw 205

Fixed clip 206

Second screw 207

Bolt 208

Rubber pad 209

Protective rubber 210

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.

Fig. 1 shows a perspective view of a cooling water pipe and a jacket pipe to which the present invention is applied. As shown, the compact diesel engine includes a cylinder head 101. The cylinder head 101 is provided with a cooling water pipe 102. A sleeve 103 is provided at a connection position (abutting position) of the cooling water pipe 102, and the sleeve 103 covers the connection position to form a seal against the connection position of the cooling water pipe 102. A groove for accommodating a sealing ring 104 is arranged at the port of the cooling water pipe 102, and the sealing ring 104 abuts against the inner wall of the sleeve 103 to form a good sealing effect. Wire retaining rings 105 are also provided on either side of the sleeve 103 for further securing the sleeve 103 to prevent movement of the sleeve 103 over the cooling water tube 102.

Fig. 2 shows a schematic structural diagram of the dismounting device according to an embodiment of the present invention. As shown in the drawings, the present invention provides a dismounting device 200 suitable for a diesel engine, and the dismounting device 200 mainly includes a stopper assembly 201 and a fixed clip assembly 202.

The block assembly 201 includes a block 203, a side 204, and a first screw 205 disposed on the block 203. The shape of the stopper 203 is matched with the outer shape of the sleeve 103, and both sides of the stopper 203 in the width direction extend inward in the radial direction of the cooling water pipe 102 and form side edges 204. The stop 203, the side 204 and the cooling water pipe 102 cooperate to form a space for receiving a portion of the sleeve 103. The first screw 205 is used to fix the sleeve 103. The stop assembly 201 primarily functions to protect the sleeve 103 and clamp the sleeve 103 when the sleeve 103 is removed and installed.

The clamp assembly 202 includes a pair of clamp clamps 206, a second screw 207, and a bolt 208. The ends of a pair of retainer clips 206 are opposed and connected by a second screw 207. When assembling, a pair of fixing clips 206 are fitted over the cooling water pipe 102 up and down, and two second screws 207 are attached to the ends of the fixing clips 206. The second screw 207 is tightened to draw the ends of the pair of fixing clips 206 toward each other and form a fixed fulcrum on the cooling water pipe 102. A threaded hole is formed in the fixed yoke 206 in the axial direction of the cooling water pipe 102, and a bolt 208 is fitted into the threaded hole and provided in the fixed yoke 206. The bolt 208 is rotated to move the bolt 208 and push the block assembly 201 to move along the axial direction of the cooling water pipe 102, and the block assembly 201 moves to drive the sleeve 103 to the connection position of the cooling water pipe 102 or leave the connection position of the cooling water pipe 102. In effect, the retaining clip 206 acts as a fulcrum and the bolt 208 provides an axial pushing force on the sleeve 103. The main function of the fixed clip assembly 202 is to push the sleeve 103 to move on the cooling water pipe 102 in a narrow space.

FIG. 3 shows a schematic block diagram of a stop assembly according to an embodiment of the present invention. Figure 4 illustrates a use state diagram of a stop assembly according to one embodiment of the present invention. As shown, a rubber pad 209 is preferably disposed on the inner wall of the stopper 203. During assembly, the rubber pad 209 engages the outer wall of the sleeve 103 to protect the jacket from damage.

Preferably, the stopper 203 has threaded holes formed along both ends in the arc length direction, and the first screw 205 is fixed to the threaded holes. The end of the first screw 205, which is directed toward the cooling water pipe 102 and passes through the stopper 203, abuts on the sleeve 103 to fix the sleeve 103. It should be noted that the arc length of the stop 203 is slightly less than rr, and R is the radius of the stop 203. The arc length of the stop 203 is set so that the stop assembly 201 has a better stroke for use and can be conveniently placed and attached to the cannula 103.

Preferably, the threaded holes are obliquely arranged on the stop block 203, so that the first screws 205 exert fixing forces on the sleeve 103 in different directions, the fixing effect of the stop block 203 and the sleeve 103 is enhanced, and the sleeve 103 is prevented from moving along the axial direction or the circumferential direction of the cooling water pipe 102. More specifically, referring to fig. 4, during assembly, the side 204 is spaced from the edge of the sleeve 103 to facilitate assembly. In addition, the side 204 of the block assembly 201 has a certain thickness and strength, so that the block assembly 201 can always hold the sleeve 103 during the process of disassembling and assembling the sleeve 103 without loosening.

Preferably, the end of the first screw 205 is hemispherical to avoid damage to the sleeve 103 during the assembly and disassembly process.

Preferably, the first screw 205 is made of copper material, so as to further reduce the possible damage to the sleeve 103.

Figure 5 shows a schematic view of a mounting clip assembly according to one embodiment of the present invention. Preferably, a protective rubber 210 is disposed on the inner surface of the fixing clip 206 to prevent the cooling water pipe 102 from being damaged during the process of pressing the fixing clip 206 and the cooling water pipe 102.

Preferably, the length of the bolt 208 is greater than or equal to 80cm, so that the bolt 208 has a better pushing stroke for the sleeve 103. A plurality of bolts 208 are provided on the fixing clip 206, and during the assembly process, the bolts 208 are alternately tightened to smoothly push the sleeve 103 to move on the cooling water pipe 102.

Fig. 6 is a block flow diagram illustrating a method for disassembling the cooling water pipe according to an embodiment of the present invention. Fig. 7 is a schematic view illustrating a cooling water pipe according to an embodiment of the present invention in a disassembly process. FIG. 8 is a schematic view of a cooling water pipe according to an embodiment of the present invention after disassembly. As shown in the drawings, the present invention provides a method for disassembling the cooling water pipe 102, which employs the disassembling device 200. A sleeve 103 is arranged at the connecting position of the cooling water pipe 102, and the sleeve 103 is sleeved outside the periphery of the connecting position to form a sealing structure. The disassembling method comprises the following steps:

s1, sleeving the fixed clamp assembly 202 on the cooling water pipe 102, and tightening the second screw 207 to clamp and fix the fixed clamp 206 on the cooling water pipe 102. The stop block assembly 201 is arranged outside the sleeve 103, and the first screw 205 is screwed down to enable the stop block 203 to tightly hold the sleeve 103. The retainer clip assembly 202 is spaced appropriately from the stop assembly 201.

S2, the bolts 208 are alternately rotated to move the bolts 208 toward the stopper assembly 201, and the stopper assembly 201 is driven to move slowly in the axial direction of the cooling water pipe 102. Finally, the block assembly 201 drives the sleeve 103 out of the connection position of the cooling water pipe 102.

S3, loosening the second screw 207, removing the fixed clip assembly 202, loosening the first screw 205, and removing the stop assembly 201. Referring to fig. 8, the sleeve 103 has been disconnected from the connection position of the cooling water pipe 102 to facilitate the subsequent repair or maintenance work.

Fig. 9 is a block flow diagram illustrating a method of installing a cooling water pipe according to an embodiment of the present invention. Fig. 10 is a schematic view showing a cooling water pipe according to an embodiment of the present invention during installation. FIG. 11 is a schematic view of a cooling water pipe according to an embodiment of the present invention after installation. The invention also provides an installation method of the cooling water pipe 102. The aforementioned attaching and detaching device 200 is used. A jacket 103 is provided on the cooling water pipe 102. The mounting method is substantially the same as the dismounting method, and comprises the following steps:

and T1, sleeving the fixed clamp assembly 202 on the cooling water pipe 102, and tightening the second screw 207 to enable the fixed clamp 206 to be fastened on the cooling water pipe 102 in a surrounding manner. The stop block assembly 201 is arranged outside the sleeve 103, and the first screw 205 is screwed down to enable the stop block 203 to tightly hold the sleeve 103. The retainer clip assembly 202 is spaced appropriately from the stop assembly 201.

T2, the bolts 208 are alternately rotated to move the bolts 208 toward the stopper assembly 201, and the stopper assembly 201 is moved slowly in the axial direction of the cooling water pipe 102. Finally, the block assembly 201 drives the sleeve 103 to cover the connecting position of the cooling water pipe 102 and compresses the sealing ring 104.

T3, loosening the second screw 207, removing the stationary clip assembly 202, loosening the first screw 205, and removing the stop assembly 201. Referring to fig. 10, the sleeve 103 is installed in place. Wire retaining rings 105 are added to either side of the sleeve 103 to further stiffen the sleeve 103.

According to the dismounting device, the mounting method and the dismounting method of the cooling water pipe, the stop block assembly is matched with the fixed hoop assembly, so that the whole assembly is convenient, safe and reliable, and the requirement of small internal operation space of a compact diesel engine is met.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. A kind of dismounting device, suitable for the diesel engine, the said diesel engine includes cooling water pipe and quill, the said quill is set up in order to form the hermetically-sealed construction on the joint position of the said cooling water pipe, the said dismounting device includes:

2. The attaching and detaching device according to claim 1, wherein a rubber pad is provided on an inner wall of the stopper.

3. The dismounting device according to claim 1, wherein the stopper is provided with threaded holes along both ends in the arc length direction, the first screw is fixed in cooperation with the threaded holes, and the end of the first screw passes through the stopper and abuts against the sleeve.

4. The attaching and detaching device according to claim 3, wherein the screw hole is provided obliquely to the stopper.

5. The release mechanism of claim 3, wherein the end of the first screw is hemispherical.

6. The disassembly and assembly device of claim 1, wherein the first screw is made of copper.

7. The attaching and detaching device according to claim 1, wherein a protective rubber is provided on an inner surface of the fixing clip.

8. The disassembly and assembly device of claim 1, wherein the length of the bolt is greater than or equal to 80 cm.

9. A method for disassembling a cooling water pipe, using any one of the disassembling and assembling devices according to claims 1 to 8, wherein a sleeve is provided on a connecting position of the cooling water pipe, the sleeve is sleeved outside the periphery of the connecting position to form a sealing structure, and the disassembling method comprises the steps of:

10. A method for installing a cooling water pipe by using the attaching and detaching device according to any one of claims 1 to 8, wherein a sleeve is provided on the cooling water pipe, the method comprising the steps of: