High-power diesel engine cylinder block casting pressure test detection device

Abstract

The utility model discloses a high-power diesel engine cylinder body casting pressure test detection device, which relates to a pressure test detection device and comprises a bottom plate, two symmetrically arranged electric sliding rails are fixedly arranged at the top of the bottom plate, a base is arranged between the two electric sliding rails in a sliding manner, a generator cylinder body casting is placed on the base, and the generator cylinder body casting is placed on the base. And a fixing clamp for fixing the generator cylinder body casting is arranged on the base. According to the utility model, through the installation of the detection assembly, pressure test detection is carried out on the blind hole on the generator cylinder body casting, the defect that only leakage conditions of a water channel, an oil channel, an oil return channel and a cavity corresponding to the generator cylinder body casting can be detected in the prior art is overcome, comprehensive pressure test detection is carried out on the generator cylinder body casting, the accuracy rate of product pressure test is improved, and the production efficiency is improved. And the problems that the generator cylinder body casting is scrapped due to leakage in the loading or loading process caused by neglecting the detection of the blind hole, and the factory assembly qualification rate of the generator cylinder body casting is influenced are avoided.

Description

Technical Field

[0001] The utility model relates to a pressure test detection device, in particular to a pressure test detection device for a high-power diesel engine cylinder block casting. Background Art

[0002] In the casting manufacturing of a generator cylinder block, the pressure test detection of the cast cylinder block is a necessary detection procedure for the casting quality, and the design of the tooling directly affects the qualified rate of the product when it leaves the factory and is installed. During the existing pressure test, since the cylinder block casting is relatively heavy, it is often impossible to accurately detect the leakage of each blind hole reserved for bolts and the like on the bottom surface of the cylinder block when the bottom surface of the cylinder block is pressed tightly against the placement plane.

[0003] For example, in the existing method, a gasket is used to seal all other places on the top surface of the 465 series cylinder block product except for the cylinder holes. When the product is subjected to a pressure test, only the leakage of the corresponding water channels, oil channels, oil return channels, and cavities can be detected. However, there are blind holes on the side of the combustion chamber inside the generator cylinder block casting. If there is a situation where the material between the combustion chamber and the blind hole is loose or there are gas holes and sand holes communicating with each other, it cannot be detected, reducing the accuracy rate of the product pressure test. Therefore, it often causes the generator cylinder block casting to be scrapped due to leakage found during the installation or loading process, affecting the qualified rate of the generator cylinder block casting when it leaves the factory. Therefore, it is very necessary to propose a pressure test detection device for a high-power diesel engine cylinder block casting to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pressure test detection device for a high-power diesel engine cylinder block casting, so as to solve the problem that when the existing technology conducts a pressure test on a high-power diesel engine cylinder block casting, the detection of blind holes is ignored, resulting in the generator cylinder block casting being scrapped due to leakage found during the installation or loading process, affecting the qualified rate of the generator cylinder block casting when it leaves the factory.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A pressure test detection device for a high-power diesel engine cylinder block casting, including a bottom plate. Two symmetrically arranged electric sliding rails are fixedly arranged on the top of the bottom plate. A base is slidably arranged between the two electric sliding rails. A generator cylinder block casting is placed on the base. A fixing jig for fixing the generator cylinder block casting is arranged on the base. Six combustion chambers arranged in a straight line and equally spaced are arranged on the generator cylinder block casting. A blind hole fixedly arranged on the generator cylinder block casting is arranged outside each combustion chamber. A plurality of blind holes are evenly distributed in a ring with the center of the combustion chamber as the center point.

[0006] On the top of the bottom plate, there are two sets of lifting power components symmetrically distributed about the center line of the bottom plate. Each set of lifting power components includes two cylinders, which are fixedly connected to the bottom plate. A connecting plate is fixedly connected between the telescopic ends of the two cylinders on one side. A lifting plate is fixedly connected between the two connecting plates. A detection component for pressure testing the blind hole is arranged on the lifting plate.

[0007] Preferably, the detection component includes a first through hole fixedly arranged inside the lifting plate. Outside the first through hole, there is a first air hole fixedly arranged on the lifting plate. A plurality of the first air holes are evenly distributed in a ring with the center of the first through hole as the center point. A sealing box is fixedly arranged on the top of the lifting plate. A second through hole is fixedly arranged inside the sealing box. A rubber pad is fixedly arranged at the bottom of the lifting plate. A third through hole is fixedly arranged inside the rubber pad. Outside the third through hole, there is a second air hole fixedly arranged on the rubber pad. A plurality of the second air holes are evenly distributed in a ring with the center of the third through hole as the center point. The positions of the second air holes and the first air holes correspond one by one. Six third through holes, second through holes and first through holes are arranged in a straight line at equal distances. The diameters of the third through hole, the second through hole, the first through hole and the combustion chamber are the same, and the positions of the third through hole, the second through hole and the first through hole correspond one by one.

[0008] Preferably, a connecting pipe is fixedly arranged at the end of the sealing box. A flow collecting cavity is arranged inside the sealing box. The connecting pipe is connected to an external leak detection instrument.

[0009] Preferably, when the generator cylinder block casting and the rubber pad are mutually attached, the positions of the first through hole and the combustion chamber correspond one by one, and the positions of the first air hole and the blind hole correspond to each other. The connecting pipe, the flow collecting cavity, the first air hole, the second air hole and the blind hole are mutually communicated.

[0010] Preferably, the fixed fixture includes a fixed block and a movable block. The fixed block is fixedly arranged at one end of the top of the base. The movable block is slidably arranged on the base through a sliding component. The fixed block and the movable block are respectively located in the two outermost combustion chambers.

[0011] Preferably, the sliding component includes a movable groove fixedly arranged on the base. An electric push rod is fixedly arranged at the end of the movable groove. The telescopic end of the electric push rod is fixedly connected with a slider adapted to the movable groove. The movable block is fixedly arranged on the top of the slider.

[0012] Preferably, the horizontal cross-sections of the movable block and the fixed block are both semi-circular structures. Two convex blocks are fixedly arranged on the arc-shaped side surfaces of the movable block and the fixed block, and the convex blocks are symmetrically distributed about the center line of the fixed block.

[0013] The technical effects and advantages of the present utility model:

[0014] 1. By installing the detection component, a pressure test is carried out on the blind holes of the generator cylinder block casting, making up for the situation in the existing technology that only the leakage of the corresponding water channels, oil channels, oil return channels and cavities of the generator cylinder block casting can be detected. Furthermore, a more comprehensive pressure test is carried out on the generator cylinder block casting, improving the accuracy of the product pressure test, and avoiding the problem that the leakage of the generator cylinder block casting is found during the installation or loading process due to the omission of the detection of the blind holes, which affects the qualified rate of the factory assembly of the generator cylinder block casting;

[0015] 2. By setting the convex block, the contact surface between the fixed block and the combustion chamber can be increased, enabling the generator cylinder block casting to be fixed on the base more stably and improving the installation stability of the generator cylinder block casting;

[0016] 3. When using this pressure test detection device, the two outermost combustion chambers on the generator cylinder block casting are respectively sleeved on the fixed block and the movable block. The electric push rod is started to drive the displacement of the slider and the movable block, so that the fixed block and the movable block hold the combustion chamber, and then the generator cylinder block casting is fixed on the base, improving the fixing and disassembly efficiency of the generator cylinder block casting;

[0017] 4. After the detection is completed, the cylinder is started in the reverse direction to drive the rubber pad to move upward and separate from the generator cylinder block casting. Through the electric slide rail, the base and the generator cylinder block casting are pushed to move back to the original position, facilitating the blanking operation of the generator cylinder block casting and improving the convenience of loading and unloading the generator cylinder block casting;

[0018] 5. When the generator cylinder block casting is installed in place, an external leak detection instrument is operated to pump out the air inside the connecting pipe, the manifold chamber, the first air hole, the second air hole and the blind hole. If there is a situation where the combustion chamber and the blind hole are connected due to loose material or porosity and sand holes, etc., the leak detection instrument shows that the leakage value exceeds the allowable range and alarms, thereby detecting the product leakage and allowing the operator to find the leak point. The structure is simple and the operation is convenient, improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the pressure test detection device for the large-power diesel engine cylinder block casting of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the base of the present invention when it is directly below the lifting plate.

[0021] Figure 3 It is a structural schematic diagram of the sliding component of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the fixed block of the present invention.

[0023] Figure 5This is a schematic structural diagram of the detection component of the present utility model.

[0024] Figure 6 This is a schematic internal structure diagram of the sealed box of the present utility model.

[0025] Figure 7 This is a schematic disassembled structural diagram of the detection component of the present utility model.

[0026] In the figure: 1. Bottom plate; 2. Electric slide rail; 3. Base; 4. Fixed block; 5. Movable block; 6. Movable slot; 7. Electric push rod; 8. Slide block; 9. Cylinder; 10. Connecting plate; 11. Lifting plate; 12. First through hole; 13. First air hole; 14. Sealed box; 15. Connecting pipe; 16. Second through hole; 17. Rubber pad; 18. Third through hole; 19. Second air hole; 20. Convex block. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] The present utility model provides a Figures 1 - 7 shown high-power diesel engine cylinder block casting pressure test detection device, including a bottom plate 1. Two symmetrically arranged electric slide rails 2 are fixedly arranged on the top of the bottom plate 1. A base 3 is slidably arranged between the two electric slide rails 2. A generator cylinder block casting is placed on the base 3. Six combustion chambers arranged in a straight line and equally spaced are arranged on the generator cylinder block casting. A blind hole fixedly arranged on the generator cylinder block casting is arranged outside each combustion chamber. A plurality of blind holes are evenly distributed in a ring with the center of the combustion chamber as the center point. A fixing fixture for fixing the generator cylinder block casting is arranged on the base 3. The fixing fixture includes a fixed block 4 and a movable block 5. The fixed block 4 is fixedly arranged at one end of the top of the base 3. The movable block 5 is slidably arranged on the base 3 through a sliding component. The fixed block 4 and the movable block 5 are respectively located in the two outermost combustion chambers. The sliding component includes a movable slot 6 fixedly arranged on the base 3. An electric push rod 7 is fixedly arranged at the end of the movable slot 6. The telescopic end of the electric push rod 7 is fixedly connected with a slide block 8 adapted to the movable slot 6. The movable block 5 is fixedly arranged on the top of the slide block 8. The horizontal cross-sections of the movable block 5 and the fixed block 4 are both semi-circular structures.

[0029] Furthermore, two sets of lifting power components symmetrically distributed about the center line of the bottom plate 1 are arranged on the top of the bottom plate 1. Each set of lifting power components includes two cylinders 9. The cylinders 9 are fixedly connected to the bottom plate 1. A connecting plate 10 is fixedly connected between the telescopic ends of the two cylinders 9 on one side. A lifting plate 11 is fixedly connected between the two connecting plates 10. A detection component for pressure testing the blind holes is arranged on the lifting plate 11.

[0030] When using this pressure testing device, the two outermost combustion chambers on the generator cylinder block casting are respectively sleeved on the fixed block 4 and the movable block 5. The electric push rod 7 is started to drive the slider 8 and the movable block 5 to displace, so that the fixed block 4 and the movable block 5 press against the combustion chamber, and then the generator cylinder block casting is fixed on the base 3, improving the fixing and dismounting efficiency of the generator cylinder block casting.

[0031] After the generator cylinder block casting is fixed, through the electric slide rail 2, the base 3 and the generator cylinder block casting are pushed to displace directly below the lifting plate 11. The four cylinders 9 are started synchronously to drive the connecting plate 10 and the lifting plate 11 to displace downward synchronously, and then drive the detection component to displace downward to perform pressure testing on the blind holes on the generator cylinder block casting, making up for the deficiency that the existing technology can only detect the leakage of the corresponding water channels, oil channels, oil return channels and cavities of the generator cylinder block casting. Furthermore, a relatively comprehensive pressure testing of the generator cylinder block casting is carried out, improving the accuracy of product pressure testing, and avoiding the problem that the discovery of leakage during the installation or loading of the generator cylinder block casting due to the omission of the detection of the blind holes results in scrapping, which affects the qualified rate of the factory assembly of the generator cylinder block casting.

[0032] Furthermore, convex blocks 20 are fixedly arranged on the arc-shaped side surfaces of the movable block 5 and the fixed block 4. There are two convex blocks 20 symmetrically distributed about the center line of the fixed block 4. Through the arrangement of the convex blocks 20, the contact surface between the fixed block 4 and the combustion chamber can be increased, so that the generator cylinder block casting can be fixed on the base 3 more stably, improving the installation stability of the generator cylinder block casting.

[0033] Further, the detection component includes a first through-hole 12 fixedly arranged inside the lifting plate 11. Outside the first through-hole 12, there is a first air hole 13 fixedly arranged on the lifting plate 11. A number of first air holes 13 are evenly distributed in a ring with the center of the first through-hole 12 as the center point. At the top of the lifting plate 11, there is a sealing box 14 fixedly arranged. Inside the sealing box 14, there is a second through-hole 16 fixedly arranged. At the bottom of the lifting plate 11, there is a rubber pad 17 fixedly arranged. Inside the rubber pad 17, there is a third through-hole 18 fixedly arranged. Outside the third through-hole 18, there is a second air hole 19 fixedly arranged on the rubber pad 17. A number of second air holes 19 are evenly distributed in a ring with the center of the third through-hole 18 as the center point. The positions of the second air holes 19 and the first air holes 13 correspond one by one. Six third through-holes 18, second through-holes 16, and first through-holes 12 are arranged in a straight line at equal distances. The diameters of the third through-hole 18, the second through-hole 16, the first through-hole 12, and the combustion chamber are the same, and the positions of the third through-hole 18, the second through-hole 16, and the first through-hole 12 correspond one by one. At the end of the sealing box 14, there is a connecting pipe 15 fixedly arranged. Inside the sealing box 14, there is a flow collecting chamber. The connecting pipe 15 is connected to an external leak detection instrument. When the generator cylinder block casting is in contact with the rubber pad 17, the positions of the first through-hole 12 and the combustion chamber correspond one by one, and the positions of the first air hole 13 and the blind hole correspond to each other. The connecting pipe 15, the flow collecting chamber, the first air hole 13, the second air hole 19, and the blind hole are interconnected.

[0034] Specifically, after the generator cylinder block casting is displaced to directly below the lifting plate 11, start the four cylinders 9 synchronously, drive the connecting plate 10 and the lifting plate 11 to displace downward synchronously, and then drive the rubber pad 17 to displace downward by a certain distance, so that the rubber pad 17 closely adheres to the generator cylinder block casting. Operate the external leak detection instrument (not shown in the figure), and pump out the air inside the connecting pipe 15, the flow collecting chamber, the first air hole 13, the second air hole 19, and the blind hole. If there is a situation where the material between the combustion chamber and the blind hole is loose or there are air holes or sand holes communicating, the leak detection instrument will display that the leakage value exceeds the allowable range and alarm, thereby detecting product leakage and allowing the operator to find the leak point. The structure is simple, the operation is convenient, and the practicability of the device is improved.

[0035] After the detection is completed, reverse-start the cylinder 9 to drive the rubber pad 17 to displace upward and separate from the generator cylinder block casting. Through the electric slide rail 2, push the base 3 and the generator cylinder block casting to displace and reset, which is convenient for the feeding and discharging operation of the generator cylinder block casting and improves the convenience of the feeding and discharging of the generator cylinder block casting.

Claims

1. A pressure test detection device for a high-power diesel engine cylinder block casting, comprising a bottom plate (1), characterized in that: At the top of the bottom plate (1), two symmetrically arranged electric slide rails (2) are fixedly provided. A base (3) is slidably arranged between the two electric slide rails (2). A generator cylinder block casting is placed on the base (3). A fixing jig for fixing the generator cylinder block casting is arranged on the base (3). Six combustion chambers are arranged on the generator cylinder block casting in a straight line at equal intervals. A blind hole fixedly arranged on the generator cylinder block casting is arranged outside each combustion chamber. A number of blind holes are evenly distributed in a ring with the center of the combustion chamber as the center point. At the top of the bottom plate (1), two sets of lifting power components symmetrically distributed about the center line of the bottom plate (1) are provided. Each set of lifting power components includes two cylinders (9). The cylinders (9) are fixedly connected to the bottom plate (1). A connecting plate (10) is fixedly connected between the telescopic ends of the two cylinders (9) on one side. A lifting plate (11) is fixedly connected between the two connecting plates (10). A detection component for pressure testing the blind holes is arranged on the lifting plate (11).

2. The pressure test detection device for a high-power diesel engine cylinder block casting according to claim 1, wherein: The detection component includes a first through hole (12) fixedly arranged inside the lifting plate (11). A first air hole (13) fixedly arranged on the lifting plate (11) is arranged outside the first through hole (12). A number of first air holes (13) are evenly distributed in a ring with the center of the first through hole (12) as the center point. A sealing box (14) is fixedly arranged at the top of the lifting plate (11). A second through hole (16) is fixedly arranged inside the sealing box (14). A rubber pad (17) is fixedly arranged at the bottom of the lifting plate (11). A third through hole (18) is fixedly arranged inside the rubber pad (17). A second air hole (19) fixedly arranged on the rubber pad (17) is arranged outside the third through hole (18). A number of second air holes (19) are evenly distributed in a ring with the center of the third through hole (18) as the center point. The positions of the second air holes (19) and the first air holes (13) correspond one by one. Six third through holes (18), second through holes (16) and first through holes (12) are arranged in a straight line at equal intervals. The diameters of the third through hole (18), the second through hole (16), the first through hole (12) and the combustion chamber are the same, and the positions of the third through hole (18), the second through hole (16) and the first through hole (12) correspond one by one.

3. The pressure test detection device for a high-power diesel engine cylinder block casting according to claim 2, wherein: A connecting pipe (15) is fixedly arranged at the end of the sealing box (14). A flow collecting cavity is arranged inside the sealing box (14). The connecting pipe (15) is connected to an external leak detection instrument.

4. A pressure test and detection device for a high-power diesel engine cylinder block casting according to claim 3, characterized in that: When the generator cylinder block casting and the rubber pad (17) are in mutual contact, the positions of the first through hole (12) and the combustion chamber correspond one by one, and the positions of the first air hole (13) and the blind hole correspond to each other. The connecting pipe (15), the flow collecting cavity, the first air hole (13), the second air hole (19) and the blind hole are interconnected.

5. A pressure test and detection device for a high-power diesel engine cylinder block casting according to claim 1, characterized in that: The fixed fixture includes a fixed block (4) and a movable block (5). The fixed block (4) is fixedly arranged at one end of the top of the base (3). The movable block (5) is slidably arranged on the base (3) through a sliding component. The fixed block (4) and the movable block (5) are respectively located in the two outermost combustion chambers.

6. The pressure test detection device for a high-power diesel engine cylinder block casting according to claim 5, wherein: The sliding component includes a movable groove (6) fixedly arranged on the base (3). An electric push rod (7) is fixedly arranged at the end of the movable groove (6). The telescopic end of the electric push rod (7) is fixedly connected with a slider (8) adapted to the movable groove (6). The movable block (5) is fixedly arranged at the top of the slider (8).

7. A pressure test and detection device for a high-power diesel engine cylinder block casting according to claim 6, characterized in that: The horizontal cross-sections of the movable block (5) and the fixed block (4) are both semi-circular structures. Two convex blocks (20) are fixedly arranged on the arc-shaped side surfaces of the movable block (5) and the fixed block (4). The two convex blocks (20) are symmetrically distributed about the center line of the fixed block (4).

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