Cylinder cover main starting valve seat grinding device

Abstract

The invention relates to the technical field of grinding devices, and discloses a cylinder cover main starting valve seat grinding device which comprises a wooden box used for grinding a valve seat of a cylinder cover main starting valve, a grinding disc installed in the wooden box and used for grinding the valve seat of the cylinder cover main starting valve, and an end face reamer installed in the wooden box and used for grinding the valve seat of the cylinder cover main starting valve. The grinding disc is mounted in the wooden box and used for being assembled with the grinding disc to grind the valve seat, the guide ring is mounted in the wooden box and used for limiting the valve seat, and the storage groove is formed in the wooden box. According to the grinding device for the valve seat of the main starting valve of the cylinder cover, it is guaranteed that in the early stage of main engine test run, flatness and smoothness grinding of the valve seat of the main starting valve can be better conducted, sealing of the starting valve of the cylinder cover is guaranteed, air leakage during bullet train tests and main engine operation is avoided, and when an end face reamer is stored in a wooden box, the wooden box is prevented from being impacted; and therefore, the end face reamer shakes in the wooden box, and collision and damage are caused.

Description

Technical Field

[0001] The present invention relates to a grinding device, which does not require manual grinding and relies on a valve seat mounting hole to fix a tool. The valve seat mounting hole also serves as a guide. The grinding device itself has a simple structure and is easy to operate. In the pre-assembly stage of a marine low-speed diesel motor vehicle, the main starting valve grinding device can be designed with different sizes according to different machine models. In the field of marine low-speed engine manufacturing technology, the main starting valve grinding device is specifically a cylinder head main starting valve seat grinding device. Background Art

[0002] At present, the large marine low-speed diesel engine market mainly manufactures and uses two patented main engines, WINGD and MAN. Regardless of the main engine, after the main engine is assembled and before the test run, a series of work such as the installation of the cylinder head start valve needs to be carried out on the test bench. During this work process, the sealing contact between the cylinder head start valve and the start valve seat is extremely easy to cause poor sealing due to bumps or the internal finish and flatness of the start valve seat not meeting the standards, so that problems such as air leakage occur during the main engine bench test or the operation of the main engine. The cylinder head start valve is an important component of the main engine, and its working state determines the starting performance of the diesel engine; and the start valve is placed on the cylinder head and is subject to the impact of heat load and high-pressure air, requiring higher reliability. For example, the manual grinding device for the valve seat hole proposed in Chinese Patent 202321038505.8 will not cause the valve seat hole to be ground and damaged due to arm fatigue.

[0003] At present, during the assembly of the main engine factory, the construction workers generally only use sandpaper, scouring pads, polishing belts, Weiss, etc. for manual grinding and cleaning. This grinding method has obvious disadvantages: on the one hand, manual grinding cannot guarantee its grinding accuracy, and its smoothness and flatness after grinding still cannot meet the standards required by the process, resulting in the cylinder head starting valve still cannot be fully contacted and fitted after installation, and cannot achieve an ideal sealing state, so that the main starting valve is prone to leakage during the main engine bench test, which seriously affects the main engine debugging and the reliability and stability of the subsequent main engine operation. Therefore, it is very urgent to better solve this problem. On the other hand, manual grinding is not efficient and is extremely inconvenient to operate. Due to the special structure of the valve seat of the cylinder head starter valve, the valve seat of the starter valve is thin and long. During manual grinding, it is impossible to completely touch the bottom of the valve seat with your hands. You can only rely on a wooden stick to support sandpaper and other grinding tools for rough grinding. It can be imagined that the grinding accuracy and grinding quality will not be very good. Moreover, this method is time-consuming and labor-intensive, which affects the labor efficiency of production, reduces labor output, and invisibly increases labor costs and time costs. It can be seen that a special grinding device for the main starter valve of the cylinder head is very necessary and effective. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a grinding device for the main starting valve of the cylinder head of a marine low-speed diesel engine, which ensures that the flatness and smoothness of the main starting valve seat can be better ground in the early stage of the main engine test, and the valve seat can be repaired to ensure the sealing of the cylinder head starting valve, thereby avoiding the problem of air leakage during the motor vehicle test and the operation of the main engine.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a cylinder head main starting valve seat grinding device, comprising:

[0008] Wooden box, used for grinding the valve seat of the main starting valve of the cylinder head.

[0009] The grinding disc, installed inside the wooden box, is used to grind the valve seat of the main starting valve of the cylinder head.

[0010] The end face reamer is installed inside the wooden box and is used to assemble with the grinding disc to grind the valve seat.

[0011] The guide ring is installed inside the wooden box to limit the valve seat.

[0012] Preferably, the storage groove is opened inside the wooden box and is used to store and protect the end reamer.

[0013] Preferably, the clamping mechanism is installed inside the storage tank and is used to clamp and protect the end reamer.

[0014] Preferably, the clamping mechanism includes a load-bearing plate, both sides of the interior of the load-bearing plate are slidably connected with short-circuit arms, the opposite ends of the two short-circuit arms are fixedly connected with clamping plates, the bottom of the load-bearing plate is fixedly connected with a second trapezoidal block through short arms, both sides of the second trapezoidal block are fixedly connected with sliding blocks, and the outside of the sliding block is slidably connected with the first trapezoidal block.

[0015] Preferably, both sides of the top of the first trapezoidal block are slidably connected with sliding rods through sleeves, the top of the sliding rods is connected to the bottom of the short-circuit arm, an inclined groove is provided inside the first trapezoidal block, the inside of the inclined groove is slidably connected to the outside of the sliding block, the sleeve cooperates with the sliding rod to guide the short-circuit arm, so that the short-circuit arm moves in a straight line, and the inclined groove enables the sliding block to transmit the first trapezoidal block.

[0016] Preferably, transverse grooves are provided on both sides of the storage groove, and a transverse arm is slidably connected inside the transverse groove, the transverse arm is connected to the first trapezoidal block, a second spring is connected between the transverse arm and the transverse groove, and the transverse arm cooperates with the second spring to guide the first trapezoidal block, thereby making the first trapezoidal block move in a straight line.

[0017] Preferably, a vertical groove is provided at the bottom of the storage groove, and a guide arm is slidably connected to the inside of the vertical groove. The top of the guide arm is connected to the bottom of the second trapezoidal block, and a first spring is connected between the guide arm and the vertical groove. The guide arm cooperates with the first spring to guide the second trapezoidal block, thereby allowing the second trapezoidal block to move in a straight line.

[0018] Preferably, both sides of the top of the load-bearing plate are provided with slots, the inside of the slots are slidably connected to the outside of the short-circuit arm, the slots can support the transmission of the short-circuit arm and guide the short-circuit arm so that the short-circuit arm moves linearly.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a cylinder head main starting valve seat grinding device, which has the following beneficial effects:

[0021] 1. The cylinder head main starter valve seat grinding device has a simple structure and is easy to operate. The main starter valve seat is ground in the pre-assembly stage of the marine low-speed diesel motor vehicle to ensure that the main starter valve seat can be better ground for flatness and finish in the early stage of the main engine test, repair the valve seat, ensure the sealing of the cylinder head starter valve, and avoid air leakage during the motor vehicle test and main engine operation;

[0022] 2. The valve seat grinding device of the cylinder head main starting valve automatically clamps and fixes the end face reamer when the end face reamer is stored in a wooden box through an additional clamping mechanism. When the end face reamer is stored inside the wooden box, the wooden box is prevented from being hit, which may cause the end face reamer to shake inside the wooden box, resulting in collision and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front cross-sectional view of the present invention;

[0024] Figure 2 It is a front schematic diagram of the present invention;

[0025] Figure 3 This is a front sectional view of the wooden box of the present invention;

[0026] Figure 4 It is a front cross-sectional view of the clamping mechanism of the present invention;

[0027] Figure 5 It is a front view and a cross-sectional view of the end face reamer of the present invention;

[0028] Figure 6 It is a top schematic diagram and a cross-sectional view of the present invention.

[0029] In the figure: 1. wooden box; 2. grinding disc; 3. end reamer; 4. guide ring; 5. storage slot; 51. horizontal slot; 52. vertical slot; 521. first spring; 6. clamping mechanism; 61. load-bearing plate; 611. slot; 612. slide bar; 613. sleeve; 62. short-circuit arm; 63. splint; 64. first trapezoidal block; 641. inclined slot; 642. horizontal arm; 643. second spring; 65. sliding block; 66. second trapezoidal block; 661. guide arm. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention provides a technical solution, a cylinder head main starting valve seat grinding device, comprising:

[0032] See also Figure 1 and Figure 2 as well as Figure 5 and Figure 6 The wooden box 1 is used for grinding the valve seat of the main starting valve of the cylinder head. The wooden box 1 is installed on the outside of the grinder, and the grinding disc 2, the end reamer 3 and the guide ring 4 inside the wooden box 1 can be assembled with the grinder to grind the workpiece.

[0033] The grinding disc 2 is installed inside the wooden box 1 and is used for grinding the valve seat of the main starting valve of the cylinder head. The grinding disc 2 can be assembled with a grinder to process the workpiece.

[0034] See also Figure 1 and Figure 2 as well as Figure 5 and Figure 6 The end face reamer 3 is installed inside the wooden box 1 and is used to be assembled with the grinding disc 2 to grind the valve seat. The end face reamer 3 can be assembled with the grinding machine to process the workpiece.

[0035] The guide ring 4 is installed inside the wooden box 1 and is used to limit the valve seat. The guide ring 4 can limit and fix the workpiece.

[0036] See also Figure 3 and Figure 4 The storage slot 5 is provided inside the wooden box 1 for storing and protecting the end reamer 3. Both sides of the storage slot 5 are provided with transverse slots 51. The interior of the transverse slot 51 is slidably connected with a transverse arm 642, which is connected to the first trapezoidal block 64.

[0037] See also Figure 3 and Figure 4 A second spring 643 is connected between the horizontal arm 642 and the horizontal groove 51. The horizontal arm 642 cooperates with the second spring 643 to guide the first trapezoidal block 64, so that the first trapezoidal block 64 can move linearly. A vertical groove 52 is provided at the bottom of the storage groove 5. A guide arm 661 is slidably connected inside the vertical groove 52. The top of the guide arm 661 is connected to the bottom of the second trapezoidal block 66. A first spring 521 is connected between the guide arm 661 and the vertical groove 52. The guide arm 661 cooperates with the first spring 521 to guide the second trapezoidal block 66, so that the second trapezoidal block 66 can move linearly.

[0038] See also Figure 3 and Figure 4 The clamping mechanism 6 is installed inside the storage groove 5 and is used to clamp and protect the end reamer 3.

[0039] The clamping mechanism 6 includes a load-bearing plate 61, which can weigh the end reamer 3. Slots 611 are provided on both sides of the top of the load-bearing plate 61. The inside of the slot 611 is slidably connected to the outside of the short-circuit arm 62. The slot 611 can support the transmission of the short-circuit arm 62 and guide the short-circuit arm 62 so that the short-circuit arm 62 moves linearly. The short-circuit arm 62 is slidably connected to both sides of the inside of the load-bearing plate 61.

[0040] See also Figure 3 and Figure 4 The short-circuit arm 62 can drive the clamping plate 63 to clamp the end face reamer 3. The opposite ends of the two short-circuit arms 62 are fixedly connected with the clamping plate 63. The bottom of the load-bearing plate 61 is fixedly connected with the second trapezoidal block 66 through the short arm. The second trapezoidal block 66 can drive the first trapezoidal block 64 to transmit. Both sides of the second trapezoidal block 66 are fixedly connected with sliding blocks 65. The sliding block 65 can drive the first trapezoidal block 64 to transmit. The outside of the sliding block 65 is slidably connected with the first trapezoidal block 64.

[0041] See also Figure 3 and Figure 4 The first trapezoidal block 64 can transmit the short-circuit arm 62. Both sides of the top of the first trapezoidal block 64 are slidably connected with the sliding rod 612 through the sleeve 613. The top of the sliding rod 612 is connected to the bottom of the short-circuit arm 62. An inclined groove 641 is provided inside the first trapezoidal block 64. The inside of the inclined groove 641 is slidably connected to the outside of the sliding block 65. The sleeve 613 cooperates with the sliding rod 612 to guide the short-circuit arm 62, so that the short-circuit arm 62 can move in a straight line. The inclined groove 641 enables the sliding block 65 to transmit the first trapezoidal block 64.

[0042] During the use of this solution, the grinding device is taken out from the wooden box 1 one by one and assembled. First, the end face reamer 3 is selected for installation to perform rough grinding of the starter valve seat. After installation, the blade of the end face reamer 3 is inserted into the bottom of the valve seat to ensure full contact with the valve seat. The position of the guide ring 4 is adjusted and placed at the valve port position of the starter valve seat to play a guiding and fixing role. The handle is rotated to drive the blade to rotate and start rough grinding of the valve seat; then the end face reamer 3 is replaced with the grinding disc 2, and the previous operation is repeated to perform fine grinding of the valve seat. Thus, the design function of the device is realized.

[0043] When the end face reamer 3 in the present scheme is placed on the top of the load-bearing plate 61 inside the storage groove 5, the end face reamer 3 will drive the load-bearing plate 61 to descend, and the descending load-bearing plate 61 drives the second trapezoidal block 66 to descend, and the descending second trapezoidal block 66 drives the sliding block 65 to transmit, and the sliding block 65 pulls the two first trapezoidal blocks 64 to move, and the two first trapezoidal blocks 64 move relative to each other to drive the short-circuit arm 62 to move, and the moving short-circuit arm 62 drives the clamping plate 63 to clamp the end face reamer 3, thereby achieving the fixation of the end face reamer 3. Through the additional clamping mechanism 6, when the end face reamer 3 is stored in the wooden box 1, the end face reamer 3 is automatically clamped and fixed. When the end face reamer 3 is stored inside the wooden box 1, the wooden box 1 is prevented from being hit, which causes the end face reamer 3 to shake inside the wooden box 1, resulting in collision and damage.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cylinder head main starting valve seat grinding device, characterized in that: include: A wooden box (1) for grinding the valve seat of the main starting valve of the cylinder head; A grinding disc (2) is installed inside the wooden box (1) and is used for grinding the valve seat of the main starting valve of the cylinder head; An end face reamer (3) is installed inside the wooden box (1) and is used to be assembled with the grinding disc (2) to grind the valve seat; The guide ring (4) is installed inside the wooden box (1) and is used to limit the valve seat.

2. A cylinder head main starting valve seat grinding device according to claim 1, characterized in that: The storage groove (5) is arranged inside the wooden box (1) and is used for storing and protecting the end face reamer (3).

3. A cylinder head main starting valve seat grinding device according to claim 1, characterized in that: The clamping mechanism (6) is installed inside the storage groove (5) and is used to clamp and protect the end face reamer (3).

4. A cylinder head main starting valve seat grinding device according to claim 3, characterized in that: The clamping mechanism (6) comprises a load-bearing plate (61), both sides of the interior of the load-bearing plate (61) are slidably connected to short-circuit arms (62), opposite ends of the two short-circuit arms (62) are fixedly connected to clamping plates (63), the bottom of the load-bearing plate (61) is fixedly connected to a second trapezoidal block (66) via the short arms, both sides of the second trapezoidal block (66) are fixedly connected to sliding blocks (65), and the outside of the sliding block (65) is slidably connected to the first trapezoidal block (64).

5. A cylinder head main starting valve seat grinding device according to claim 4, characterized in that: Both sides of the top of the first trapezoidal block (64) are slidably connected to a sliding rod (612) through a sleeve (613), the top of the sliding rod (612) is connected to the bottom of the short-circuit arm (62), and an inclined groove (641) is provided inside the first trapezoidal block (64), and the inside of the inclined groove (641) is slidably connected to the outside of the sliding block (65).

6. A cylinder head main starting valve seat grinding device according to claim 2, characterized in that: Both sides of the storage slot (5) are provided with transverse slots (51), the interior of the transverse slot (51) is slidably connected with a transverse arm (642), the transverse arm (642) is connected to the first trapezoidal block (64), and a second spring (643) is connected between the transverse arm (642) and the transverse slot (51).

7. A cylinder head main starting valve seat grinding device according to claim 2, characterized in that: A vertical slot (52) is provided at the bottom of the storage slot (5), a guide arm (661) is slidably connected to the inside of the vertical slot (52), the top of the guide arm (661) is connected to the bottom of the second trapezoidal block (66), and a first spring (521) is connected between the guide arm (661) and the vertical slot (52).

8. The valve seat grinding device for the main starting valve of a cylinder head according to claim 4, characterized in that: Both sides of the top of the load-bearing plate (61) are provided with slots (611), and the inside of the slots (611) is slidably connected to the outside of the short-circuit arm (62).

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