Airtight test device for engine cylinder block

Abstract

The utility model belongs to the field of engine detection, and particularly relates to an airtight test device for an engine cylinder block, which comprises a fixing mechanism. A detection mechanism is fixedly mounted at the upper end of the fixing mechanism, and a body mechanism is movably placed in the middle of the upper end of the fixing mechanism; the detection mechanism comprises a supporting frame, limiting grooves are fixedly formed in the left side and the right side of the inner end of the supporting frame, an electric lifting rod is fixedly assembled in the middle of the lower end of the supporting frame, an assembling plate is fixedly installed at the lower end of the electric lifting rod, and a mounting frame is fixedly assembled at the upper end of the supporting frame; a water tank is fixedly assembled on the left side of the inner end of the mounting frame; a water pipe is fixedly connected to the lower end of the water tank; through the arrangement of the water tank and the air pump, when the device detects the engine cylinder body, water can be injected into the engine cylinder body firstly, then air is inflated into the engine cylinder body, and the air tightness of the engine cylinder body can be rapidly detected.

Description

Technical Field

[0001] The utility model relates to the field of engine detection, in particular to an airtightness test device for an engine cylinder body. Background Art

[0002] The engine block is a structure that contains the cylinders and other components of an internal combustion engine. In early automobile engines, the engine block consisted only of the cylinder block with a separate crankcase attached. Modern engine blocks usually integrate the crankcase and cylinder block into a single component. Since the engine block is the main component of the car's drive, the inspection of the engine block is particularly strict.

[0003] The commonly used airtightness test equipment for the engine cylinder block generally adopts an airtightness test machine, which plugs the piston hole and crankshaft hole on the engine cylinder block with rubber skin, and then performs a water injection airtightness test or an air injection airtightness test on the cavity in the engine cylinder block. However, this testing equipment is difficult for employees to operate, has a poor operating environment, and is inefficient. In addition, the engine case cylinder crankshaft soaked in water can easily cause the engine cylinder block to mold and the crankshaft to rust, resulting in reduced engine remanufacturing quality;

[0004] The Chinese patent publication number is: CN211234881U discloses an airtightness test device for a remanufactured engine cylinder block. Through the combined structure of an upper blocking mechanism and a test mechanism, the two are combined to block the through hole on the cylinder block on the one hand, and on the other hand, after the downward stroke data of the piston in the piston hole is calculated, the airtightness test of the cylinder block can be carried out in cooperation with an air flow meter installed on the exhaust passage. Under the same atmospheric pressure, when the air flow detected by the air flow meter is small, it can be determined that there is a problem with the airtightness of the cylinder block. On the contrary, the airtightness of the cylinder block is excellent. However, in actual operation, since the detection requires repeated data comparison and the airtightness of the engine cylinder block can be detected based on the transformation of the atmospheric pressure data, the test steps are relatively cumbersome and there are many test detection steps, resulting in low test efficiency and affecting production. Therefore, an airtightness test device for an engine cylinder block is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, Chinese patent publication number: CN211234881U discloses an airtight test device for a remanufactured engine cylinder block. In actual operation, since the detection requires repeated data comparison and the airtightness of the engine cylinder block can be detected based on the transformation of atmospheric pressure data, the test steps are relatively cumbersome and there are many test detection steps, resulting in low test efficiency and affecting production. The utility model proposes an airtight test device for an engine cylinder block.

[0006] The utility model solves the technical problem by adopting a technical solution: an airtightness test device for an engine cylinder block, comprising a fixing mechanism; a detection mechanism is fixedly installed on the upper end of the fixing mechanism, and a main body mechanism is movably placed in the middle of the upper end of the fixing mechanism;

[0007] The detection mechanism includes a support frame, and limit grooves are fixedly provided on the left and right sides of the inner end of the support frame, an electric lifting rod is fixedly installed in the middle of the lower end of the support frame, and an assembly plate is fixedly installed at the lower end of the electric lifting rod, and a mounting frame is fixedly installed at the upper end of the support frame, and a water tank is fixedly installed on the left side of the inner end of the mounting frame, and a water pipe is fixedly connected to the lower end of the water tank, and the water pipe passes through the assembly plate and the sealing head and is fixedly connected, an air pump is fixedly installed on the right side of the inner end of the mounting frame, and an air pipe is fixedly connected to the lower end of the air pump, and an air pressure detection block is fixedly installed in the middle of the air pipe. By arranging the water tank and the air pump, when the device detects a component, water can be poured into the interior of the object first, and then air can be inflated into the interior of the component, so as to quickly detect the air tightness of the object.

[0008] Preferably, the fixing mechanism includes an equipment box, a base is fixedly installed at the lower end of the equipment box, a control panel is fixedly installed at the front end of the equipment box, a placing table is fixedly provided in the middle of the upper end of the equipment box, and slide grooves are fixedly provided on the left and right sides of the placing table at the upper end of the equipment box, electric push rods are fixedly installed at the left and right ends of the placing table, a splint is fixedly installed at the outer end of the electric push rod, and a protective pad is fixedly installed above the inner end of the splint. By providing the protective pad, there is no friction when the splint clamps the detection object, thereby protecting the detection component from damage.

[0009] Preferably, the main body mechanism comprises an engine cylinder body, and a piston hole is fixedly provided at the upper end of the engine cylinder body.

[0010] Preferably, the support frame is fixedly installed in the middle of the upper side of the equipment box, the support frame is a U-shaped structure, the limit grooves are symmetrically distributed on the left and right sides of the inner end of the support frame, the number of the electric lifting rods is two, and the left and right ends of the assembly plate extend to the inside of the limit groove. By setting the limit groove, the up and down sliding of the assembly plate is more stable.

[0011] Preferably, the number of the mounting frames is three, the water tank and the air pump are symmetrically distributed on the left and right sides of the upper end of the support frame, and the sealing heads are equidistantly distributed on the lower end of the assembly plate. In the structure of the device, the lower end of the water pipe is located inside the sealing head on the left side of the lower end of the assembly plate, and the lower end of the air pipe is located inside the sealing head on the right side of the lower end of the assembly plate. During operation, the two can be controlled according to use.

[0012] Preferably, the slide grooves are symmetrically distributed at the upper end of the equipment box, and the electric push rods are symmetrically distributed at the left and right ends of the placement table. By setting the electric push rods, the splints can be controlled to move in opposite directions, thereby making the device suitable for engine cylinder bodies of different specifications.

[0013] Preferably, the engine cylinder body is movably placed on the upper end of the placement table, and the number of piston holes corresponds to the number of sealing heads. By making the number of piston holes correspond to the number of sealing heads, the interior of the engine cylinder body can be kept in a sealed structure, thereby increasing the effectiveness of the tightness detection.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model is provided with a water tank and an air pump. When the device detects the engine cylinder body, water can be poured into the interior of the engine cylinder body first, and then air can be inflated into the interior of the engine cylinder body, so that the air tightness of the engine cylinder body can be quickly detected;

[0016] 2. The utility model provides a protective pad so that the clamping plate has no friction when clamping the detection object, thereby protecting the detection component from damage, and the lower end of the clamping plate extends to the inside of the slide slot, so that the clamping plate maintains good stability during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the fixing mechanism of the utility model;

[0020] Figure 3 It is a three-dimensional structural diagram of the detection mechanism of the utility model;

[0021] Figure 4 It is a three-dimensional structural diagram of the main body mechanism of the utility model.

[0022] In the figure: 1. fixing mechanism; 101. equipment box; 102. base; 103. control panel; 104. placing table; 105. slide groove; 106. electric push rod; 107. clamping plate; 108. protective pad; 2. detection mechanism; 201. support frame; 202. limit groove; 203. electric lifting rod; 204. assembly plate; 205. mounting frame; 206. water tank; 207. water pipe; 208. sealing head; 209. air pump; 210. air pipe; 211. air pressure detection block; 3. main body mechanism; 301. engine cylinder body; 302. piston hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The following is combined with Figure 1-4 To further explain this application in detail,

[0025] The present application embodiment discloses an airtightness test device for an engine cylinder block. Figure 1-Figure 4 , an airtightness test device for an engine cylinder block, comprising a fixing mechanism 1; a detection mechanism 2 is fixedly mounted on the upper end of the fixing mechanism 1, and a main body mechanism 3 is movably placed in the middle of the upper end of the fixing mechanism 1;

[0026] The detection mechanism 2 includes a support frame 201, and the left and right sides of the inner end of the support frame 201 are fixedly provided with limit grooves 202. The middle part of the lower end of the support frame 201 is fixedly equipped with an electric lifting rod 203, and the lower end of the electric lifting rod 203 is fixedly equipped with an assembly plate 204. The upper end of the support frame 201 is fixedly equipped with a mounting frame 205, and the left side of the inner end of the mounting frame 205 is fixedly equipped with a water tank 206. The lower end of the water tank 206 is fixedly connected with a water pipe 207, and the water pipe 207 passes through the assembly plate 204 and the sealing head 208. An air pump 209 is fixedly installed on the right side of the inner end of the mounting frame 205, an air pipe 210 is fixedly connected to the lower end of the air pump 209, and an air pressure detection block 211 is fixedly installed in the middle of the air pipe 210. By setting up a water tank 206 and an air pump 209, when the device detects a component, water can be poured into the interior of the object first, and then air can be inflated into the interior of the component to quickly detect the air tightness of the object. The setting of this structure can detect gaps with lower density in time, making the air tightness detection of the object faster and more effective.

[0027] Reference Figure 2The fixing mechanism 1 includes an equipment box 101, a base 102 is fixedly installed at the lower end of the equipment box 101, a control panel 103 is fixedly installed at the front end of the equipment box 101, a placement table 104 is fixedly arranged in the middle of the upper end of the equipment box 101, and the upper end of the equipment box 101 is located on the left and right sides of the placement table 104 and is fixedly provided with slide grooves 105, and electric push rods 106 are fixedly installed at the left and right ends of the placement table 104, and a clamping plate 107 is fixedly installed on the outer end of the electric push rod 106, and a protective pad 108 is fixedly installed on the upper part of the inner end of the clamping plate 107. By providing the protective pad 108, the clamping plate 107 has no friction when clamping the detection object, thereby protecting the detection component from damage, and the lower end of the clamping plate 107 extends to the inside of the slide groove 105, so that the clamping plate 107 maintains good stability during movement.

[0028] Reference Figure 4 The main body mechanism 3 includes an engine cylinder body 301 , and a piston hole 302 is fixedly provided at the upper end of the engine cylinder body 301 .

[0029] Reference Figure 3 The support frame 201 is fixedly installed in the middle of the upper side of the equipment box 101. The support frame 201 is a U-shaped structure. The limiting grooves 202 are symmetrically distributed on the left and right sides of the inner end of the support frame 201. There are two electric lifting rods 203. The left and right ends of the assembly plate 204 extend to the inside of the limiting grooves 202. By setting the limiting grooves 202, the assembly plate 204 can slide up and down more stably. At the same time, the setting of the electric lifting rods 203 also allows the assembly plate 204 to move up and down automatically, thereby increasing the convenience of using the lower end parts of the assembly plate 204.

[0030] There are three mounting frames 205, and the water tank 206 and the air pump 209 are symmetrically distributed on the left and right sides of the upper end of the support frame 201. The sealing heads 208 are equidistantly distributed on the lower end of the assembly plate 204. In the structure of the device, the lower end of the water pipe 207 is located inside the sealing head 208 on the left side of the lower end of the assembly plate 204, and the lower end of the air pipe 210 is located inside the sealing head 208 on the right side of the lower end of the assembly plate 204. During operation, the two can be controlled according to use, and the engine cylinder body 301 can be blocked by the sealing head 208 during use to avoid air leakage during detection.

[0031] Reference Figure 1 and Figure 2 The slide grooves 105 are symmetrically distributed at the upper end of the equipment box 101, and the electric push rods 106 are symmetrically distributed at the left and right ends of the placement table 104. By setting the electric push rods 106, the clamping plate 107 can be controlled to move in opposite or reverse directions, thereby making the device suitable for engine cylinder bodies 301 of different specifications.

[0032] Reference Figure 1 and Figure 4The engine cylinder body 301 is movably placed on the upper end of the placement table 104, and the number of piston holes 302 corresponds to the number of sealing heads 208. By making the number of piston holes 302 correspond to the number of sealing heads 208, the interior of the engine cylinder body 301 can be kept sealed, thereby increasing the effectiveness of the airtightness detection.

[0033] Working principle: The technical scheme of the utility model is an airtight test device for an engine cylinder body. First, the engine cylinder body 301 to be tested for airtightness is placed on the upper end of the placement table 104, and then the electric push rod 106 is driven to make the clamping plate 107 installed at the outer end clamp the engine cylinder body 301, and then a water tank 206 and an air pump 209 are arranged on the upper end of the support frame 201, and the lower end of the water pipe 207 is located inside the sealing head 208 on the left side of the lower end of the assembly plate 204, and the lower end of the air pipe 210 is located inside the sealing head 208 on the right side of the lower end of the assembly plate 204. The engine cylinder body 301 is tested for airtightness. 1, water can be poured into the interior of the engine cylinder body 301 first, and then air can be inflated into the interior of the component to quickly detect the air tightness of the engine cylinder body 301. The arrangement of this structure can detect gaps with lower density in time, making the air tightness detection of objects faster and more effective. The various components of the device complement each other. A protective pad 108 is arranged at the inner end of the splint 107, so that the splint 107 has no friction when clamping the detection object, thereby protecting the detection component from damage. The lower end of the splint 107 extends to the interior of the slide groove 105, so that the splint 107 maintains better stability during movement.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An airtightness test device for an engine cylinder, characterized in that: It comprises a fixing mechanism (1); a detection mechanism (2) is fixedly mounted on the upper end of the fixing mechanism (1), and a main body mechanism (3) is movably placed in the middle of the upper end of the fixing mechanism (1); The detection mechanism (2) comprises a support frame (201), the inner end of which is fixedly provided with limit grooves (202) on the left and right sides, the lower end of which is fixedly provided with an electric lifting rod (203), the lower end of which is fixedly provided with an assembly plate (204), the upper end of which is fixedly provided with a mounting frame (205), the inner end of which is fixedly provided with a left side of the inner end of the mounting frame (205). A water tank (206) is fixedly mounted on the side, a water pipe (207) is fixedly connected to the lower end of the water tank (206), the water pipe (207) passes through the assembly plate (204) and is fixedly connected to the sealing head (208), an air pump (209) is fixedly mounted on the right side of the inner end of the mounting frame (205), an air pipe (210) is fixedly connected to the lower end of the air pump (209), and an air pressure detection block (211) is fixedly mounted in the middle of the air pipe (210).

2. The airtightness test device for an engine cylinder block according to claim 1, characterized in that: The fixing mechanism (1) comprises an equipment box (101), a base (102) is fixedly installed at the lower end of the equipment box (101), a control panel (103) is fixedly installed at the front end of the equipment box (101), a placement table (104) is fixedly installed in the middle of the upper end of the equipment box (101), a slide groove (105) is fixedly installed on the left and right sides of the placement table (104) at the upper end of the equipment box (101), an electric push rod (106) is fixedly installed at the left and right ends of the placement table (104), a clamping plate (107) is fixedly installed at the outer end of the electric push rod (106), and a protective pad (108) is fixedly installed above the inner end of the clamping plate (107).

3. The airtightness test device for an engine cylinder block according to claim 2, characterized in that: The main body mechanism (3) comprises an engine cylinder body (301), and a piston hole (302) is fixedly provided at the upper end of the engine cylinder body (301).

4. The airtightness test device for an engine cylinder block according to claim 3, characterized in that: The support frame (201) is fixedly mounted in the middle of the upper side of the equipment box (101); the support frame (201) is a U-shaped structure; the limiting grooves (202) are symmetrically distributed on the left and right sides of the inner end of the support frame (201); there are two electric lifting rods (203); and the left and right ends of the assembly plate (204) extend into the interior of the limiting grooves (202).

5. The airtightness test device for an engine cylinder block according to claim 4, characterized in that: The number of the mounting frames (205) is three, the water tank (206) and the air pump (209) are symmetrically distributed on the left and right sides of the upper end of the support frame (201), and the sealing heads (208) are equidistantly distributed on the lower end of the assembly plate (204).

6. The airtightness test device for an engine cylinder block according to claim 5, characterized in that: The slide grooves (105) are symmetrically distributed at the upper end of the equipment box (101), and the electric push rods (106) are symmetrically distributed at the left and right ends of the placement platform (104).

7. The airtightness test device for an engine cylinder block according to claim 6, characterized in that: The engine cylinder body (301) is movably placed on the upper end of the placement platform (104), and the number of the piston holes (302) corresponds to the number of the sealing heads (208).

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