JP2006075770A - Apparatus for cleaning cylinder head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for cleaning a cylinder head, which is made compact as a whole by facilitating drainage to dispense with a unit for turning over the cylinder head. <P>SOLUTION: The cylinder head W of an engine is placed on a pallet 31 in such an erected state that the central axis L of rotation of a camshaft is extended vertically. The cylinder head-placed pallet is conveyed in a cleaning booth 2 by a conveying unit 4 to clean the cylinder head by a cleaning unit 21. As a result, a cleaning liquid sprayed toward the cylinder head W from the cleaning unit 21 is made to positively run down below the cylinder head W so that the cleaning liquid can be prevented from remaining in the cylinder head W. Therefore, the drainage of the cleaning liquid can be facilitated, a conventional unit for turning over the cylinder head can be omitted and the entire size of the apparatus 1 for cleaning the cylinder head can be made small. Furthermore, such a problem can be prevented that the cleaning liquid-stored cylinder head W is taken out of the cleaning booth 2 to the outside and the cleaning liquid in the cylinder head is scattered around and causes a failure in another surrounding apparatus. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cylinder head cleaning device that cleans a cylinder head before engine assembly.

  For example, in an engine assembly factory, after machining a cylinder head, the cylinder head is washed before assembling the engine to remove cutting oil and chips adhering to the cylinder head.

  FIG. 13 is a diagram illustrating a conventional cylinder head cleaning device 100.

  The cylinder head cleaning device 100 includes a cleaning device 101 for cleaning the cylinder head W by spraying a cleaning liquid, and an air blow device 102 for spraying air on the cylinder head W to perform draining and drying. Is carried on the pallet by the conveying device 104 and passed through the booth 103 to clean the cylinder head W.

  The conventional pallet has a configuration in which the cylinder head W is placed on the pallet from the viewpoint of stability during transport and workability, and the combustion chamber side and the valve chamber side of the cylinder head W are placed up and down. Thus, the cylinder head is mounted in a posture state in which the camshaft rotation center axis L extends horizontally.

  However, the combustion chamber side of the cylinder head W is recessed in the ceiling of the combustion chamber, and the cylinder head W is formed with a recess for supporting the valve and camshaft on the valve operating chamber side. Therefore, when the cylinder head W is laid on the pallet, the cleaning liquid is accumulated in the concave portion, and it may take a long time for subsequent draining and drying, and the draining and drying may be insufficient.

  Therefore, the conventional cylinder head cleaning device 100 is provided with a mechanical reversing device 105 in the booth 103, lifts the cylinder head W after the cleaning from the pallet, reverses the cleaning water stored in the recess of the cylinder head W, and Was discharged, the cylinder head W was inverted again and returned to the pallet, and then drained and dried.

  Conventionally, there has been proposed a draining device for a pallet washing machine that is provided with a pallet reversing device at a position in the middle of the conveyance conveyor and reverses the pallet carried out from the pallet washing machine to discharge the cleaning liquid accumulated in the pallet. (For example, refer to Patent Document 1).

JP-A-5-245448

  However, since such a reversing device 105 is provided in the cleaning device 101, when the cylinder head W is reversed, the cleaning liquid accumulated in the cylinder head W or on the pallet is scattered, for example, the air blowing device 102 or the like. In the booth 103, there is a problem that it adheres to other devices and facilities and induces a malfunction such as a failure.

  Further, the reversing device 105 needs to secure a space for reversing the cylinder head W in the booth 103, and there is a problem that it is difficult to secure the installation space because the cylinder head cleaning device 100 is enlarged.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a cylinder head cleaning device that improves drainage, eliminates the need for a reversing device, and can reduce the overall size of the device. is there.

  In the cylinder head cleaning device according to the first aspect of the present invention, the cylinder head of the engine can be supported and placed in an upright posture in which the camshaft rotation center axis of the cylinder head extends in the vertical direction. The pallet, transport means that can transport the pallet on which the cylinder head is placed and stop at a preset cleaning position, and cleaning liquid to the cylinder head placed on the pallet stopped at the cleaning position by the transport means And cleaning means for cleaning by spraying.

  The invention according to claim 2 is characterized in that the cylinder head cleaning device according to claim 1 has an air blowing means for blowing water to the cylinder head after cleaning to perform draining and drying.

  According to a third aspect of the present invention, in the cylinder head cleaning device according to the first or second aspect, the pallet includes a base plate that extends horizontally along the upper surface of the conveying device, and a base plate that stands on the upper surface of the base plate. A support portion that supports the cylinder head in an upright posture at a position above the first position, a support portion that places the cylinder head in the upright posture state, an end surface on the combustion chamber side of the cylinder head, and a valve chamber side A second restricting means for restricting movement in a direction connecting the pair of side surfaces by contacting a pair of side surfaces extending along the camshaft rotation center axis between the end surfaces of the cylinder head and the combustion of the cylinder head And a third regulating means for regulating movement in a direction connecting between the combustion chamber side and the valve operating chamber side by contacting the end surface on the chamber side and the end surface on the valve operating chamber side, respectively.

  According to the first aspect of the present invention, since the cylinder head is supported and cleaned by the pallet in a standing posture state in which the camshaft rotation center axis extends in the vertical direction, the cleaning liquid sprayed on the cylinder head by the cleaning means is moved downward. As a result, it is possible to prevent the cleaning liquid from remaining in the cylinder head.

  Accordingly, the drainage of the cleaning liquid can be improved, and the conventional reversing device can be omitted. Thereby, the magnitude | size of the whole apparatus can be reduced in size and an installation space can be ensured easily.

  Also, since the cleaning liquid can be actively flowed down from the cylinder head, the cleaning liquid can be taken out from the cleaning booth while it is stored in the cylinder head, or can be scattered around and cause other devices to malfunction. Can be prevented.

  According to invention of Claim 2, air can be sprayed on the cylinder head after washing | cleaning, and the draining drying of a cylinder head can be completed rapidly. Therefore, energy saving of the entire apparatus can be achieved, and the cycle time in the cylinder head cleaning process can be shortened.

  According to a third aspect of the present invention, the cylinder head is placed on the first restricting means in a standing posture, and the camshaft rotation center extends between the end surface on the combustion chamber side and the end surface on the valve operating chamber side of the cylinder head. The second restricting means can be brought into contact with a pair of side surfaces extending along the axis, and the third restricting means can be brought into contact with the end face on the combustion chamber side and the end face on the valve operating chamber side of the cylinder head. This restricts the movement of the cylinder head in the direction connecting the pair of side surfaces and the movement of the cylinder head in the direction connecting the end surface on the combustion chamber side and the end surface on the valve operating chamber side, The cylinder head can be stably supported.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall view showing the cylinder head cleaning device 1, and FIG. 2 is a plan view thereof.

  The cylinder head cleaning device 1 cleans the cylinder head W with a cleaning liquid, performs air blow after the cleaning, and performs draining and drying.

  The cylinder head cleaning apparatus 1 includes a cleaning booth 2 for cleaning the cylinder head W, a draining drying booth 3 for draining and drying the cylinder head W by air blow, a cylinder head W placed on the pallet 31 and transported, and the cleaning booth 2 A transfer device 4 is provided as a transfer means for carrying in and out of the drainer drying booth 3.

  The conveying device 4 is configured to convey the pallet 31 and stop the cylinder head W placed on the pallet 31 at a preset position by rotational driving of a drive motor (not shown). The conveyance device 4 is laid along the floor surface, and as shown in FIG. 2, forms a circumferential conveyance path so that the plan view has a substantially square shape.

  The conveying device 4 is a conveyor section 11 for carrying in extending over a predetermined length, is bent toward the left side in the traveling direction continuously to the downstream end of the conveyor section 11 for carrying in, and in the washing booth 2 and the draining and drying booth. 3, a cleaning conveyor section 12 that passes through the inside of the cleaning conveyor section 12, a carry-out conveyor section 13 that is bent toward the left in the traveling direction continuously to the downstream end of the cleaning conveyor section 12 and extends in parallel with the loading conveyor section 11, A return conveyor section 14 is provided which is bent toward the left in the traveling direction continuously to the downstream end of the carry-out conveyor section 13 and whose downstream end is continuous to the upstream end of the carry-in conveyor 11.

  On the downstream side of the carry-in conveyor unit 11, a mounting stage S <b> 1 is formed, on which an operator performs the work of placing the cylinder head W before washing on the pallet 31. A take-out stage S <b> 2 for performing the work of taking out the subsequent cylinder head W from the pallet 31 is formed.

  The cleaning booth 2 and the draining / drying booth 3 are provided in a box 5 provided in the middle of the cleaning conveyor 12. The box 5 has a box frame shape extending along the upper portion of the cleaning conveyor section 12, and the cylinder head W is placed on the pallet 31 on the vertical wall surface located on the upstream side of the cleaning conveyor section 12. An upstream opening 5a for carrying in the box 5 in the loaded state is formed, and a downstream opening 5b for carrying out from the box 5 is formed on the vertical wall surface located on the downstream side. Yes.

  Further, a partition wall 6 is provided in the box 5 so as to partition the upstream side and the downstream side at the center position in the transport direction, and a central opening for allowing the pallet 31 on which the cylinder head W is placed to pass therethrough. 5c is formed.

  The cleaning booth 2 is formed on the upstream side in the transport direction from the partition wall portion 6 in the box 5, and the draining drying booth 3 is formed on the downstream side in the transport direction from the partition wall portion 6 in the box 5. .

  And the door part 7 is provided in the upstream opening part 5a, the downstream opening part 5b, and the center opening part 5c. The door portion 7 is provided so as to be movable in the vertical direction with respect to the openings 5a, 5b, and 5c. The door portion 7 is moved up and down by an actuator 8 provided for each door portion 7 and moved upward. Each of the openings 5a, 5b, and 5c is opened and closed by moving downward.

  The cleaning booth 2 is provided with a cleaning device 21 as cleaning means for cleaning the cylinder head W by jetting cleaning liquid toward the cylinder head W. The draining drying booth 3 has air supplied from the turbo blower 23. Is blown to the cylinder head W to blow off and remove the cleaning liquid and chips adhering to the cylinder head W, and an air blow device 22 for draining and drying is provided. Note that the cleaning device 21 and the air blow device 22 are well-known devices, and detailed descriptions thereof are omitted.

  A plurality of pallets 31 are placed on the transport device 4 so as to be arranged at a predetermined interval from each other, and are sequentially carried into the washing booth 2 and carried out from the draining / drying booth 3.

  The cylinder head cleaning device 1 is controlled by a control unit (not shown) provided in the control panel 24. The control unit has hardware such as a relay circuit and a sequence program computer, and a dedicated software program.

  3 is a front view of the pallet 31, FIG. 4 is a plan view of the pallet 31, FIG. 5 is a left side view of the pallet 31, FIG. 6 is a right side view of the pallet 31, and FIG. FIG. For convenience of explanation, the front in the transport direction (indicated by an arrow F in the drawing) in the washing booth 2 and the draining and drying booth 3 will be described as the front side of the pallet 31, and the rear in the transport direction will be described as the rear side of the pallet.

  A cylinder head W indicated by a two-dot chain line in FIGS. 3 to 7 is used for a DOHC engine, and an end face W1 joined to a cylinder block of the engine is formed on the combustion chamber side of the cylinder head W. Yes. A camshaft bearing portion is formed on the valve chamber side of the cylinder head W so that the camshaft rotation center axis L extends in parallel in a pair.

  As shown in FIGS. 3 to 6, the pallet 31 supports a horizontally extending base plate 32 and the cylinder head W on the base plate 32 in a standing posture state in which the camshaft rotation center axis L extends in the vertical direction. It has the support part 33 for.

  As shown in FIG. 4, the base plate 32 has a substantially rectangular flat plate shape in plan view, and an opening hole 32 a for draining the cleaning liquid is provided at the center position. Engaging grooves 32b that engage with the positioning pins are formed in the left and right sides of the base plate 32 that face each other.

  When the cylinder head W is placed on the pallet 31, the support portion 33 supports the cylinder head W from the left-right direction and the front-rear direction and holds the cylinder head W in a standing posture state. A support bracket 51 and a third support bracket 61 are provided.

  As shown in FIGS. 4 and 7, the first support bracket 41 is provided so as to straddle the opening hole 32a at the center position of the base plate 32. The first support bracket 41 is separated from each other left and right via the opening hole 32a. A pair of support legs 42 that face each other and rise upward from the base plate 32, and a support substrate 43 that extends horizontally between the upper ends of the pair of support legs 42 and that has an opening 44 at the center. Have.

  As shown in FIGS. 3, 4, and 7, the support substrate 43 is perpendicular to a horizontal attachment (first regulating means) 45 that extends in the horizontal direction and the vertical direction and supports the lower portion of the cylinder head W, respectively. An attachment 46 is attached. The horizontal attachment 45 is made of an elastic member such as MC nylon, and is attached so as to overlap the upper portion of the support substrate 43. The upper surface 45a is in contact with the lower surface W2 of the cylinder head W so that the cylinder head W is attached. It is formed in a shape that can be stably supported.

  A through hole 45 b is formed in the horizontal attachment 45 so as to communicate with the opening 44 of the support substrate 43. The through hole 45 b is provided at a position that is coaxially continuous with the camshaft rotation center axis L of the cylinder head W, and the cleaning liquid that has flowed out from the cylinder head W enters the opening 44 of the support substrate 43 from the through hole 45 b. It guides and passes through the inside of the opening hole 32a of the base plate 32, moves downward, and is configured to discharge smoothly.

  The vertical attachment 46 has a flat plate shape that extends in the left-right direction along the rear end portion of the support substrate 43 and protrudes upward from the rear end portion, and is an end surface of the cylinder head W on the valve operating chamber side. The cylinder head W has a shape capable of stably supporting the cylinder head W by contacting with the cylinder head W when the cylinder head W is inclined.

  The second support bracket 51 is provided so as to form a pair spaced apart from each other at the front side of the first support bracket 41 and to stand upward from the upper surface of the base plate 32. The second support bracket 51 has a strip shape that has a certain width in the left-right direction and extends in the up-down direction, and the length thereof is provided on the left side in the drawing as shown in FIG. The second support bracket 51 is formed to be higher than the second support bracket 51 provided on the right side.

  Side attachments (second restricting means) 52 that are in contact with the left and right side surfaces W4, W5 of the cylinder head W are provided on the upper portions of the pair of second support brackets 51, respectively. The side attachment 52 is made of an elastic member such as MC nylon like the horizontal attachment 45 and the like, and protrudes rearward from the second support bracket 51, and is provided with left and right side surfaces W4 and W5 of the cylinder head W. The cylinder head W has a shape capable of stably supporting the cylinder head W in the left-right direction by contacting the cylinder head W when the cylinder head W is inclined.

  Further, a front attachment (third restricting means) 53 facing the end surface W1 of the cylinder head W on the combustion chamber side is provided at a mid-height position of each second support bracket 51. The front attachment 53 is made of an elastic member such as MC nylon, protrudes rearward from each second support bracket 51, and has a predetermined gap between the cylinder head W and the end surface W1 on the combustion chamber side. The cylinder head W has a shape that can stably support the cylinder head W by contacting the cylinder head W when the cylinder head W is inclined.

  The third support bracket 61 is provided so as to form a pair spaced apart from each other at the rear side of the first support bracket 41 and to stand upward from the upper surface of the base plate 32. And it has the flat plate shape which has a predetermined width over the front-back direction, and is extended in an up-down direction, The height is set so that it may be located in the approximate center height position of the 2nd support bracket 51. .

  On the upper part of the pair of third support brackets 61, rear attachments (third restricting means) 62 that are in contact with the end face W3 of the cylinder head W on the valve operating chamber side are provided. The rear attachment 62 is made of an elastic member such as MC nylon as in the case of the front attachment 53. The rear attachment 62 projects from the third support brackets 61 toward each other, and is provided on the valve chamber side of the cylinder head W. The cylinder head W is opposed to the end face W3 with a predetermined gap, and has a shape capable of stably supporting the cylinder head W by contacting when the cylinder head W is inclined.

  The rear attachment 62 has a block shape extending in the up-down direction, a facing surface portion 63 facing the end surface W3 on the valve operating chamber side of the cylinder head W, and the other rear attachment 62 orthogonal to the facing surface portion 63. And a facing surface portion 64 facing the surface.

  The facing surface portion 63 and the facing surface portion 64 are formed on the valve chamber side of the cylinder head W gradually as the upper portion of the facing surface portion 63 moves upward in order to facilitate mounting and removal of the cylinder head W on the pallet 31. It is formed so as to be separated from the end surface W3, and is formed so as to be gradually separated from each other to the left and right as the upper portion of the facing surface portion 64 moves upward.

  The pallet 31 can cope with cylinder heads having a plurality of shapes (plural types), and is configured so that cylinder heads W ′ having other shapes can be supported in a standing posture state. 8 to 12 are views showing a pallet 31 that supports a cylinder head W ′ having another shape in a standing posture, FIG. 8 is a front view of the pallet, FIG. 9 is a plan view of the pallet, and FIG. 11 is a left side view of the pallet, FIG. 11 is a right side view of the pallet, and FIG. 12 is a sectional view taken along line BB in FIG. A cylinder head W ′ indicated by a two-dot chain line in FIGS. 8 to 12 is used for a DOHC engine and has a flat block shape. An end surface W′1 joined to the cylinder block of the engine is formed on the combustion chamber side of the cylinder head W ′, and a cam block (a cam block for rotatably supporting the camshaft on the valve chamber side of the cylinder head W ′). End face W'3 joined to (not shown) is formed.

  In the pallet 31, the horizontal attachment (first restriction means) 45 of the first support bracket 41 faces the lower surface W ′ 2 of the cylinder head W ′, and the vertical attachment 46 serves as a valve operating chamber of the cylinder head W ′ as third restriction means. The side attachments (second restricting means) 52 of the second support bracket 51, which are configured to face the side end surface W'3 and make a pair, are formed on the left and right side surfaces W'4, W'5 of the cylinder head W '. The front attachments (third restricting means) 53 are configured to face each other and face the end surface W′1 on the combustion chamber side of the cylinder head W ′.

  Next, the operation of the cylinder head cleaning apparatus 1 having the above configuration will be described.

  First, the cylinder head W before cleaning is placed on the pallet 31 at the mounting stage S1, and supported in a standing posture. Then, it is conveyed downstream by the carry-in conveyor unit 11 and delivered to the upstream end of the cleaning conveyor unit 12.

  When the cleaning conveyor 12 receives the pallet 31 from the carry-in conveyor 11, the door 7 of the cleaning booth 2 moves upward to open the upstream opening 5 a of the box 5. Then, the cleaning conveyor unit 12 is driven to carry the pallet 31 into the box 5, and the pallet 31 on which the cylinder head W is placed is stopped at a cleaning position set in advance in the cleaning booth 2.

  In the cleaning booth 2, when the upstream opening 5 a is closed by the door portion 7, the cylinder head W is cleaned by the cleaning device 21. Here, since the cylinder head W is supported on the pallet 31 in an upright posture in which the camshaft rotation center axis L extends in the vertical direction, the cleaning liquid sprayed onto the cylinder head W by the cleaning device 21 is Without remaining in the head W, it can flow down from above. At that time, the cleaning liquid that has flowed into the camshaft bearing portion can flow down from the through hole 45 b of the horizontal attachment 45 through the opening 44 of the support substrate 43.

  The cleaning liquid that has flowed down from the cylinder head W passes through the opening hole 32 a and flows down to the lower side of the base plate 32. Therefore, the pallet 31 can quickly drain the cleaning liquid that has flowed down from the cylinder head W, and the cylinder head W after cleaning can be quickly drained from the cleaning booth 2 to the draining and drying booth 3 without using a conventional reversing device. Can be conveyed.

  The cylinder head W is transported to the draining / drying booth 3 after being washed by spraying the cleaning liquid for a predetermined time in the cleaning booth 2. In the draining / drying booth 3, air is blown to the cylinder head W after cleaning by the air blow device 22, and draining / drying is performed.

  Since the cylinder head W is supported in a standing posture by the pallet 31, the cleaning liquid does not accumulate in the cylinder head W, and can be drained and dried in an extremely short time. Therefore, the operation time of the air blow device 22 can be shortened, and energy saving of the entire device can be achieved.

  When the cylinder head W receives air blow for a predetermined time in the draining / drying booth 3 and drains and drys, the pallet 31 is unloaded from the draining / drying booth 3 and conveyed to the downstream end of the cleaning conveyor unit 12. It is placed on the upstream end of the carry-out conveyor section 13 at the downstream end. The carry-out conveyor unit 13 conveys the pallet 31 to the downstream end and delivers it to the return conveyor unit 14, and the return conveyor unit 14 conveys the pallet 31 to the take-out stage S <b> 2 upstream of the carry-in conveyor unit 11.

  Then, the pallet 31 is stopped at the take-out stage S2, and the cylinder head W after washing is taken out from the pallet 31. The pallet 31 from which the cylinder head W has been taken out is conveyed from the take-out stage S2 to the mounting stage S1 by the carry-in conveyor unit 11, and the cylinder head W before cleaning is again mounted on the mounting stage S1.

  According to the cylinder head cleaning device having the above configuration, since the pallet 31 supports the cylinder head W in the standing posture, the cleaning liquid sprayed by the cleaning device 21 is allowed to actively flow down toward the lower side of the cylinder head W. It is possible to prevent the cleaning liquid from remaining in the cylinder head W.

  Therefore, the conventional reversing device for reversing the workpiece can be omitted, and the entire device can be miniaturized. Therefore, an installation space can be easily secured and installation can be simplified.

  In addition, since the cleaning liquid can be actively flowed down from the cylinder head W, the cleaning liquid is taken out from the cleaning booth 2 in a state where the cleaning liquid is accumulated in the cylinder head W or is scattered to the surroundings to cause troubles in other devices. It can be prevented from occurring.

  Moreover, draining and drying by the air blow device after cleaning can be completed quickly. Therefore, energy saving of the entire apparatus can be achieved, and the cycle time in the cleaning process of the cylinder head W can be shortened.

  Further, the pallet 31 in the present embodiment corresponds to the two types of cylinder heads W and W ′, and has a configuration in which each is supported in a standing posture state. Therefore, the pallet 31 can be shared, and it is not necessary to prepare the pallets 31 corresponding to the type of work, and space saving can be achieved.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the case where the transfer device 4 has a circumferential transfer path has been described as an example, but the transfer device 4 may extend in a straight line.

It is a general view which shows a cylinder head washing | cleaning apparatus. It is a top view of a cylinder head cleaning device. It is a front view of a pallet. It is a top view of a pallet. It is a left view of a pallet. It is a right view of a pallet. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a front view of a pallet. It is a top view of a pallet. It is a left view of a pallet. It is a right view of a pallet. It is the BB sectional drawing of FIG. It is a figure explaining a prior art.

Explanation of symbols

1 Cylinder head cleaning device 4 Conveying device (conveying means)
21 Cleaning device (cleaning means)
22 Air blow device 31 Pallet 32 Base plate 33 Support portion 45 Horizontal attachment (first regulating means)
46 Vertical attachment (third regulating means)
52 Side attachment (second regulating means)
53 Front attachment (third regulating means)
62 Rear attachment (third regulating means)
W, W ′ Cylinder heads W1, W′1 Combustion chamber side end surface W2, W′2 Bottom surface W3, W′3 Valve chamber side end surface W4, W′4 Right side surface W5, W′5 Left side surface L Camshaft Rotation center axis

Claims (3)

A pallet capable of supporting and mounting the cylinder head of the engine in an upright posture in which the camshaft rotation center axis of the cylinder head extends in the vertical direction;
Transport means capable of transporting the pallet on which the cylinder head is placed and stopping at a preset cleaning position;
A cylinder head cleaning apparatus, comprising: cleaning means for spraying cleaning liquid onto a cylinder head placed on a pallet stopped at a cleaning position by the conveying means.   2. The cylinder head cleaning apparatus according to claim 1, further comprising an air blow unit that blows air to the cylinder head after cleaning to perform draining and drying. The pallet includes a base plate that extends horizontally along the upper surface of the transport device, and a support portion that is erected on the upper surface of the base plate and supports the cylinder head in the standing posture at a position above the base plate. Prepared,
The support portion extends along the camshaft rotation center axis line between a first regulating means for placing the cylinder head in an upright posture and an end surface on the combustion chamber side and an end surface on the valve operating chamber side of the cylinder head. A second restricting means for restricting movement in a direction connecting the pair of side surfaces by contacting the pair of extending side surfaces, and an end surface on the combustion chamber side and an end surface on the valve operating chamber side of the cylinder head, respectively. A third restricting means for restricting movement in a direction contacting and connecting the combustion chamber side and the valve operating chamber side;
The cylinder head cleaning device according to claim 1, wherein:

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