Diesel engine body plugging and filling type automatic leak detection machine

Abstract

The utility model discloses a diesel engine body plugging and filling type automatic leak detection machine which comprises a base and a support, a workpiece bottom plate is installed on the base through a sliding rail, a tool clamp is installed on the bottom plate, and the bottom plate is connected with a propulsion control assembly. A cylinder face sealing plate is arranged on the upper portion of the support, a cylinder hole plug is arranged below the cylinder face sealing plate, the cylinder face sealing plate is connected with a cylinder face sealing power source, a machine body water hole plug is arranged on the lower portion of the support and above the bottom plate, and an inflation hole is formed in the machine body water hole plug. And the machine body water hole plug is connected with a water hole plug power source. Leakage detection does not need to be matched with a water tank, the dry-type plugging and filling leakage detection mode is simple, reliable, accurate and errorless, the labor intensity is low, the working efficiency is high, and therefore the quality of a detected machine body is guaranteed.

Description

Technical Field

[0001] The invention relates to a detection device, in particular to an automatic leak detector used for detecting leakage points of a diesel engine body. Background Art

[0002] Currently, the problem of three leaks in diesel engine blocks (i.e., leaks in the air, oil, and water channels) is a major challenge plaguing diesel engine manufacturers. Manufacturing and processing generally requires a pressure test process to determine product quality and the presence of casting defects such as leaks. Inspection of the engine block is extremely rigorous, as leaks can prevent the engine from starting, posing a significant quality and safety risk. Therefore, leak detection methods are crucial. Directly using a dry pressure tester would be costly, complex, and time-consuming. Currently, wet testing (using hydraulic pressure) is commonly used. This involves pressurizing the sealed cavity of the diesel engine block to a certain level, then placing it in a water tank. The engine block is then observed for bubbles to determine leaks and compliance. This clamping and testing method is not only cumbersome and requires the coordination of multiple personnel, but also labor-intensive and harsh working environments. It also has a low degree of automation and poor accuracy. Summary of the Invention

[0003] The object of the present invention is to overcome the above technical deficiencies and to provide a diesel engine body plugging and filling automatic leak detector capable of performing dry pneumatic detection on whether the water channel of the diesel engine body is leaking.

[0004] The objectives of the present invention are achieved through the following technical solutions: a diesel engine body plugging and filling automatic leak detection machine, comprising a base and a bracket, the base passing through the bracket and being located at the bottom of the bracket, a workpiece base plate being mounted on the base through a slide rail, a tooling fixture being mounted on the base plate, and the base plate being connected to a propulsion control assembly; a cylinder surface sealing plate being mounted on the upper part of the bracket, a cylinder hole plug being mounted under the cylinder surface sealing plate, the cylinder surface sealing plate being connected to a cylinder surface sealing power source, a body water hole plug being mounted on the lower part of the bracket and above the base plate, an inflation hole being provided on the body water hole plug, and the body water hole plug being connected to a water hole plug power source.

[0005] A sealing ring is mounted on the cylinder bore plug, which is connected to the cylinder bore plug power source via a connecting rod. The cylinder surface sealing plate is comprised of two components, one located diagonally on either side of the upper portion of the bracket. Both the cylinder surface sealing plate and the cylinder bore plug correspond to the cylinder bore of the engine being inspected. An alarm indicator light is mounted on the top of the bracket, emitting a bright alarm if a leak is detected in the engine being inspected. The cylinder surface sealing power source, cylinder bore plug power source, water hole plug power source, and alarm indicator light are all electrically connected to an electrical control cabinet for unified and precise control.

[0006] After adopting the structure of the present invention, the inspected body is clamped by a tooling fixture and advanced in place by a propulsion control component. The upper inclined cylinder holes and the lower side water holes of the inspected body are effectively and comprehensively blocked and sealed by a cylinder surface sealing plate, cylinder hole plugs, and body water hole plugs respectively. The inspected body is inflated by a gas source through the inflation holes on the body water hole plugs. If the air pressure inside the inspected body is detected to not meet the requirements, it does not meet the product quality requirements and there is a leak, and an alarm indicator emits an alarm light. This leak detection no longer requires the cooperation of a water tank. The dry plugging and charging leak detection method is simple, reliable, accurate, has a low labor intensity, and high work efficiency, thus ensuring the quality of the inspected body. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0008] Figure 1 It is a schematic installation structure diagram of the present invention.

[0009] Figure 2 It is Figure 1 a side top view (the inspected body has been advanced in place).

[0010] Figure 3 It is Figure 1 a schematic structural diagram of the connection between the cylinder surface sealing plate, cylinder hole plugs and the cylinder hole plug power source in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] Referring to Figures 1 to 3 it can be seen that the present invention is applied to a diesel engine body plugging and charging type automatic leak detector for engine production, including a base 1 and a bracket 2. The base 1 passes through the bracket 2 and is located at the bottom of the bracket 2. A workpiece bottom plate 4 is installed on the base 1 through a slide rail 3, a tooling fixture 5 is installed on the bottom plate 4, and the bottom plate 4 is connected to a propulsion control component 6; on the upper part of the bracket 2 (through a guiding rod 7), a cylinder surface sealing plate 8 is installed, and several cylinder hole plugs 9 are installed under the cylinder surface sealing plate 8. The cylinder surface sealing plate 8 is connected to a cylinder surface sealing power source 10 (a cylinder surface sealing oil cylinder, installed on the bracket). On the lower part of the bracket 2 and above the bottom plate 4, several body water hole plugs 14 are installed. The body water hole plugs 14 are provided with inflation holes, and the body water hole plugs 14 are connected to a water hole plug power source 15 (a water hole plug cylinder, with a gas source, installed on the bracket).

[0012] As Figure 3As shown in the figure, in order to precisely control the plugging and sealing effect of the cylinder hole plug, a sealing ring 11 is installed on the cylinder hole plug 9. The cylinder hole plug 9 is connected to a cylinder hole plug power source 13 (which is a cylinder hole plug oil cylinder and several corresponding ones can be installed in the cylinder surface sealing plate 8) through a connecting rod 12 (a corresponding number of them). The cylinder surface sealing plate 8 is in two pieces and is respectively located on the diagonal sides of the upper part of the bracket. Both the cylinder surface sealing plate 8 and the cylinder hole plug 9 correspond to the cylinder hole positions of the inspected machine body. An alarm indicator light 16 is installed on the top of the bracket 2, which emits an alarm light if there is a leak in the inspected machine body. The cylinder surface sealing power source 10, the cylinder hole plug power source 13, the water hole plug power source 15, and the alarm indicator light 16 are respectively electrically connected to the electrical control cabinet 17, and are uniformly and precisely regulated by it.

[0013] The working principle of the present invention is as follows: The inspected machine body 18 (a V12 diesel engine body) is fixed and clamped on the bottom plate 4 by a tooling fixture 5. The upper part of the inspected machine body 18 has cylinder holes obliquely arranged on both sides (six on each side, a total of twelve for installing diesel engine pistons), and its lower part has several water holes arranged on both sides (for water inlet and outlet). The propulsion control component 6 moves the bottom plate 4, the tooling fixture 5 on it, and the inspected machine body 18 along the slide rail 3 to the corresponding position below the bracket 2; then, the cylinder surface sealing power source 10 drives the cylinder surface sealing plate 8, and the cylinder hole plug power source 13 drives the cylinder hole plug 9 to effectively and comprehensively plug and seal the upper oblique cylinder holes of the inspected machine body. The water hole plug power source 15 drives the body water hole plug 14 to effectively plug and seal the water holes on both sides of the lower part of the inspected machine body; finally, the air source inflates the inspected machine body through the inflation hole on the body water hole plug 14. If the air pressure in the inspected machine body is detected to not meet the requirements, it does not meet the product quality requirements and there is a leak, and the alarm indicator light 16 emits an alarm light.

Claims

1. Diesel engine block plugging type automatic leak detector, including a base and a bracket, characterized in that: The base passes through the bracket and is located at the bottom of the bracket. A workpiece base plate is installed on the base through a slide rail, and a tooling fixture is installed on the base plate. The base plate is connected to a propulsion control component. At the upper part of the bracket, a cylinder surface sealing plate is installed, and a cylinder hole plug is installed under the cylinder surface sealing plate. The cylinder surface sealing plate is connected to a cylinder surface sealing power source. At the lower part of the bracket and above the base plate, a body water hole plug is installed. An inflation hole is provided on the body water hole plug, and the body water hole plug is connected to a water hole plug power source.

2. The diesel engine block plugging type automatic leak detector according to claim 1, wherein: A sealing ring is installed on the cylinder hole plug, and the cylinder hole plug is connected to a cylinder hole plug power source through a connecting rod.

3. The diesel engine block plugging type automatic leak detector according to claim 1 or 2, characterized in that: There are two cylinder surface sealing plates, which are respectively located on the diagonal sides of the upper part of the bracket. Both the cylinder surface sealing plate and the cylinder hole plug correspond to the cylinder hole position of the inspected body.

4. The diesel engine block plugging type automatic leak detector according to claim 2, characterized in that: An alarm indicator light is installed on the top of the bracket.

5. The diesel engine block plugging type automatic leak detector according to claim 4, characterized in that: The cylinder surface sealing power source, the cylinder hole plug power source, the water hole plug power source, and the alarm indicator light are all electrically connected to an electrical control cabinet and are precisely regulated uniformly by it.

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