Engine testing equipment

Abstract

The present invention discloses an engine detection device, which relates to the field of engine detection technology, including a detection box and a detection component, wherein the detection box is provided with a detection component, wherein the detection component includes a detection plate, a ventilation chamber, an air slide plate, a partition plate, an air inlet, a sealing tube, a sealing plug, a ventilation groove, an identification rod and an identification plate, wherein a detection plate is fixedly connected to the middle of the detection box, and a ventilation chamber is provided inside the detection plate, wherein the air slide plate is symmetrically slidably connected to the left and right sides of the ventilation chamber, and a partition plate is fixedly connected to the middle of the ventilation chamber, wherein air inlets are symmetrically provided on the upper and lower surfaces of the detection plate, and sealing tubes are symmetrically fixedly connected to the upper and lower sides of the detection plate, and a sealing plug is provided inside the sealing tube. When the present invention is used, multiple tests can be performed on the engine at one time, and when detecting air tightness, water and oil pollution of the engine can be avoided, which is convenient for subsequent processing, and convenient for regional investigation of leaking parts, and convenient for judging the degree of leaking.

Description

Technical Field

[0001] The invention relates to the technical field of engine detection, in particular to an engine detection device. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, internal combustion engines usually convert chemical energy into mechanical energy. The engine is applicable to power generation devices, and can also refer to the entire machine including the power device (such as: gasoline engines, aircraft engines). The engine was first born in the UK, so the concept of engine also originated from English, and its original meaning refers to the "mechanical device that generates power".

[0003] During the production and processing of the engine, it is necessary to perform multiple tests on it, such as air tightness test, metal parts missing detection, etc. When the existing detection devices are used for testing, they mostly use different equipment to perform multiple tests on it. When testing air tightness, it is generally done by assembling the cylinder head to be tested with the cylinder body and then performing a leak test on it. First, the other holes are blocked, and then the remaining hole is injected with high-pressure water or high-pressure oil to detect water leakage to detect air tightness. This method causes water stains or oil on the surface of the cylinder head, which is not conducive to the subsequent process.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an engine detection device is proposed. Summary of the invention

[0005] The object of the present invention is to provide an engine detection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an engine detection device, comprising a detection box and a detection component, the detection box is provided with a detection component, the detection component comprises a detection plate, a ventilation chamber, an air slide plate, a partition plate, an air inlet, a sealing tube, a plug, a ventilation groove, an identification rod and an identification plate, the detection box is fixedly connected with a detection plate in the middle part, and a ventilation chamber is opened inside the detection plate, the ventilation chamber is symmetrically and slidingly connected with an air slide plate on the left and right sides, and the ventilation chamber is fixedly connected with a partition plate in the middle part, the upper and lower surfaces of the detection plate are symmetrically provided with air inlets, and the detection plate is symmetrically and fixedly connected with a sealing tube on the upper and lower sides, the sealing tube is provided with a plug on the inner side, the upper and lower sides of the right wall of the detection box are provided with ventilation grooves, and an identification rod is fixedly connected to the right side of the ventilation groove, and an identification plate is slidably connected inside the identification rod.

[0007] Furthermore, the detection plate and the identification rod are both made of transparent materials, and scale bars are provided on both ends of the detection plate and the surface of the identification rod. The air inlet is located inside the sealing tube, and the sealing plug is fixedly connected to the detection plate.

[0008] Furthermore, sealing grooves are symmetrically provided on the upper and lower sides of the detection box, and contacts are fixedly connected in the sealing grooves. Probes are symmetrically provided on the left and right sides of the inner wall of the detection box.

[0009] Furthermore, an air supply assembly is provided at the rear of the detection box, and the air supply assembly includes an air box and an isolation plate. The air box is fixedly connected to the rear of the detection box, and the isolation plate is fixedly connected to the upper middle portion of the air box.

[0010] Furthermore, the air supply assembly also includes a through hole, a gas compression spring, a gas compression plate and a gas compression port. The through holes are symmetrically opened on the upper and lower walls of the air box, and the gas compression springs are symmetrically fixedly connected on the upper and lower sides of the air box, and the other end of the gas compression spring is fixedly connected to the gas compression plate, and the gas compression port is fixedly connected to the surface of the gas compression plate.

[0011] Furthermore, the air compression plate is fitted with the inner wall of the air box, and the air compression plate is elastically connected to the air box via an air compression spring, and the air compression port coincides with the central axis of the through port.

[0012] Furthermore, support rods are symmetrically fixedly connected to the four corners of the detection box, and bottom plates are symmetrically fixedly connected to the upper and lower sides of the support rods, and a clamping assembly is provided on one side of the bottom plate close to the detection box.

[0013] Furthermore, the clamping assembly includes a lifting rod, a lower pressure plate, an arc plate and a buffer spring. The side of the bottom plate close to the detection box is fixedly connected to the lifting rod, and the other end of the lifting rod is fixedly connected to the lower pressure plate. The rear side of the lower pressure plate is fixedly connected to the arc plate, and the other side of the lower pressure plate is fixedly connected to the buffer spring.

[0014] Furthermore, the clamping assembly also includes a lifting plate, a bottom frame, a telescopic rod and a clamping plate. The other end of the buffer spring is fixedly connected to the lifting plate, and the surface of the lifting plate is fixedly connected to the bottom frame. The left and right sides of the bottom frame are symmetrically fixedly connected to the telescopic rod, and the other end of the telescopic rod is fixedly connected to the clamping plate. The lifting plate is elastically connected to the lower pressure plate through the buffer spring.

[0015] Furthermore, the clamping assembly also includes an air supply plug, an air supply pipe and a connecting pipe. The air supply plug is fixedly connected to the rear side of the bottom frame, and the air supply pipe is fixedly connected to the rear of the air supply plug. The rear part of the air supply pipe is sleeved with a connecting pipe, and the connecting pipe is slidably connected to the air box through a through port, and the connecting pipe is snap-connected to the air compression port.

[0016] The present invention provides an engine detection device, which has the following beneficial effects: when in use, multiple tests can be performed on the engine at one time, and when detecting air tightness, the engine can be prevented from being contaminated by water and oil, which is convenient for subsequent processing, and it is convenient to conduct regional inspections of leaking parts and to judge the degree of leakage.

[0017] 1. When the present invention is in use, the engine cylinder block and cylinder head are first placed on the lower and upper lifting plates respectively, and they are located in the center of the bottom frame and the air supply plug is connected to the cylinder block and the cylinder head. Then the telescopic rod drives the clamping plate to approach the cylinder block and the cylinder head and clamp them. After the clamping is firm, the remaining holes on the cylinder block and the cylinder head are blocked. The lifting rod can drive the lifting plate to move through the lower pressure plate to approach the detection box, and send the cylinder block and the cylinder head into the detection box. The bottom frame can cooperate with the sealing groove and the lifting plate to seal the detection box to avoid large errors in the detection results caused by air leakage in the detection box during the airtight detection. In summary, the engine cylinder block and the cylinder head can be conveniently fixed and air can be supplied to the inside during use.

[0018] The air pressure plate is pushed and slidably connected to the cylinder body and the cylinder head, and the airtightness is tested. When the air pressure plate is in contact with the isolation plate, the air supply is completed, thereby achieving the effect of quantitative air supply, which is convenient for judging the degree of leakage during airtightness testing. In summary, when in use, the engine can be quantitatively supplied with air, thereby judging the degree of air supply.

[0019] 3. In the present invention, after the engine cylinder block and cylinder head enter the inspection box, the sealing plug can seal the cylinder mouth on the cylinder block and cylinder head. When the bottom frame is inserted into the sealing groove and cooperates with the lifting plate to seal the inspection box, the bottom frame contacts the contact point, which can make the contact point energize the probe, so that the probe scans the inside of the cylinder block and cylinder head to perform metal parts missing detection. After confirming that all internal metal parts have been installed, the lifting rod can drive the lower pressure plate to continue to move for air tightness detection. When performing the air tightness detection, air enters the engine cylinder block and cylinder head from the air supply plug. If there is no air leakage on the engine cylinder block and cylinder head, the air slide plate and identification plate will not slide in the detection plate and identification rod. If there is an air leakage in the cylinder of the cylinder block and cylinder head, the exposed air will enter the sealing tube and enter the ventilation chamber through the air inlet, causing the air slide plate to slide in the ventilation chamber. The mark plate slides in the mark rod, and according to the mark rod where the sliding mark plate is located, it can be determined whether the leak occurs in the cylinder block or the cylinder head, and the degree of leakage can be determined by the sliding distance of the air slide plate and the mark plate on the ventilation chamber and the mark rod. The transparent detection plate and the mark rod are convenient for observing the air slide plate and the mark plate, and the scale bars set at both ends of the detection plate and the surface of the mark rod are also convenient for quantifying the moving distance of the air slide plate and the mark plate. In summary, when in use, the engine can be tested for air tightness and metal parts missing installation at one time, and when performing air tightness detection, it is convenient to judge the leaking point and the degree of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of an engine detection device of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall side view structure of an engine detection device of the present invention;

[0022] Figure 3 It is a schematic diagram of the cross-sectional front view structure of an engine detection device of the present invention;

[0023] Figure 4 A schematic diagram of a sectional three-dimensional structure of an engine detection device of the present invention;

[0024] Figure 5 It is a schematic diagram of a sectional three-dimensional exploded structure of a detection box of an engine detection device of the present invention;

[0025] Figure 6 It is a cross-sectional rear view structural schematic diagram of an engine detection device of the present invention;

[0026] Figure 7A schematic diagram of a cross-sectional three-dimensional structure of an air box of an engine testing device of the present invention;

[0027] Figure 8 The present invention is a schematic diagram of a three-dimensional exploded structure of a clamping assembly of an engine testing device.

[0028] In the figure: 1, test box; 2, test assembly; 201, test board; 202, ventilation chamber; 203, air slide plate; 204, partition plate; 205, air inlet; 206, sealing tube; 207, sealing plug; 208, ventilation groove; 209, identification rod; 210, identification plate; 3, sealing groove; 4, contact; 5, probe; 6, air supply assembly; 601, air box; 602, partition plate; 60 3. Through port; 604. Air compression spring; 605. Air compression plate; 606. Air compression port; 7. Support rod; 8. Bottom plate; 9. Clamping assembly; 901. Lifting rod; 902. Lower pressure plate; 903. Arc plate; 904. Buffer spring; 905. Lifting plate; 906. Bottom frame; 907. Telescopic rod; 908. Clamp; 909. Air supply plug; 910. Air supply pipe; 911. Connecting pipe. DETAILED DESCRIPTION

[0029] See also Figures 1 to 8 The present invention provides a technical solution: an engine detection device, including a detection box 1 and a detection component 2, the detection box 1 is provided with the detection component 2, the detection component 2 includes a detection plate 201, a ventilation chamber 202, an air slide plate 203, a partition plate 204, an air inlet 205, a sealing tube 206, a sealing plug 207, a ventilation groove 208, an identification rod 209 and an identification plate 210, the detection box 1 is fixedly connected with the detection plate 201 in the middle, and the detection plate 201 is provided with a ventilation chamber 202, and the ventilation chamber The left and right sides of 202 are symmetrically and slidably connected with air slide plates 203, and a partition plate 204 is fixedly connected to the middle of the ventilation chamber 202, air inlets 205 are symmetrically opened on the upper and lower surfaces of the detection plate 201, and sealing cylinders 206 are symmetrically and fixedly connected to the upper and lower sides of the detection plate 201, and a sealing plug 207 is provided on the inner side of the sealing cylinder 206, ventilation grooves 208 are provided on the upper and lower sides of the right wall of the detection box 1, and an identification rod 209 is fixedly connected to the right side of the ventilation groove 208, and an identification plate 210 is slidably connected inside the identification rod 209.

[0030] See also Figures 1 to 5 , the detection plate 201 and the identification rod 209 are both made of transparent materials, and scale bars are set on both ends of the detection plate 201 and the surface of the identification rod 209, the air inlet 205 is located on the inner side of the sealing tube 206, and the sealing plug 207 is fixedly connected to the detection plate 201, the detection box 1 is symmetrically provided with sealing grooves 3 on the upper and lower sides, and the sealing grooves 3 are fixedly connected with contacts 4, and the inner wall of the detection box 1 is symmetrically provided with probes 5 on the left and right sides;

[0031] The specific operation is as follows: after the engine cylinder block and cylinder head enter the inspection box 1, the sealing plug 207 can seal the cylinder port on the cylinder block and cylinder head. When the bottom frame 906 is inserted into the sealing groove 3 and cooperates with the lifting plate 905 to seal the inspection box 1, the bottom frame 906 contacts the contact 4, which can make the contact 4 energize the probe 5, so that the probe 5 scans the inside of the cylinder block and cylinder head to detect the missing metal parts. After confirming that all the internal metal parts have been installed, the lifting rod 901 can drive the lower pressing plate 9 02 continues to move for air tightness detection. During the air tightness detection, air enters the engine cylinder block and cylinder head from the air supply plug 909. If there is no air leakage on the engine cylinder block and cylinder head, the air slide plate 203 and the identification plate 210 will not slide in the detection plate 201 and the identification rod 209. If there is an air leakage in the cylinder of the cylinder block and cylinder head, the exposed air will enter the sealing tube 206 and enter the ventilation chamber 202 through the air inlet 205, causing the air slide plate 203 to slide in the ventilation chamber 202. The air slide 203 is moved, and the position of the sliding air slide 203 can be used to determine whether the air leaks in the cylinder of the cylinder block or the cylinder head. If the air leaks in other places of the cylinder block and the cylinder head, the leaked gas will enter the identification rod 209 through the ventilation groove 208, so that the identification plate 210 slides in the identification rod 209. According to the identification rod 209 where the sliding identification plate 210 is located, it can be determined whether the air leaks in the cylinder block or the cylinder head. The sliding distance can be used to judge the degree of leakage. The transparent detection plate 201 and the identification rod 209 are convenient for observing the air slide plate 203 and the identification plate 210, and the scale bars set at both ends of the detection plate 201 and the surface of the identification rod 209 are also convenient for quantifying the moving distance of the air slide plate 203 and the identification plate 210. In summary, when in use, the engine can be tested for air tightness and metal parts missing at one time, and when performing air tightness testing, it is convenient to judge the leakage point and the degree of leakage.

[0032] See also Figures 1 to 3 and Figures 6 to 8An air supply assembly 6 is arranged at the rear of the detection box 1, and the air supply assembly 6 includes an air box 601 and an isolation plate 602. The air box 601 is fixedly connected to the rear of the detection box 1, and the isolation plate 602 is fixedly connected to the middle and upper part of the air box 601. The air supply assembly 6 also includes a through port 603, a compressed air spring 604, a compressed air plate 605 and a compressed air port 606. The through ports 603 are symmetrically opened on the upper and lower walls of the air box 601, and the compressed air springs 604 are symmetrically fixedly connected to the upper and lower sides of the air box 601, and the other end of the compressed air spring 604 is fixedly connected to the compressed air plate 605. The surface of the air pressure plate 605 is fixedly connected with an air pressure port 606, the air pressure plate 605 is fitted with the inner wall of the air box 601, and the air pressure plate 605 is elastically connected to the air box 601 through the air pressure spring 604, the air pressure port 606 coincides with the central axis of the through port 603, the four corners of the detection box 1 are symmetrically fixedly connected with support rods 7, and the upper and lower sides of the support rods 7 are symmetrically fixedly connected with the bottom plate 8, and the bottom plate 8 is provided with a clamping assembly 9 close to the detection box 1. The clamping assembly 9 includes a lifting rod 901, a lower pressure plate 902, an arc plate 903 and a buffer spring 904, and the bottom plate 8 is close to the detection box 1. A lifting rod 901 is fixedly connected to one side of the measuring box 1, and the other end of the lifting rod 901 is fixedly connected to a lower pressure plate 902, an arc plate 903 is fixedly connected to the rear side of the lower pressure plate 902, and a buffer spring 904 is fixedly connected to the other side of the lower pressure plate 902. The clamping assembly 9 also includes a lifting plate 905, a bottom frame 906, a telescopic rod 907 and a clamping plate 908. The other end of the buffer spring 904 is fixedly connected to the lifting plate 905, and the surface of the lifting plate 905 is fixedly connected to the bottom frame 906. The left and right sides of the bottom frame 906 are symmetrically fixedly connected to the telescopic rods 90 7, and the other end of the telescopic rod 907 is fixedly connected with a clamping plate 908, the lifting plate 905 is elastically connected to the lower pressure plate 902 through a buffer spring 904, the clamping assembly 9 also includes an air supply plug 909, an air supply pipe 910 and a connecting pipe 911, the rear side of the bottom frame 906 is fixedly connected with an air supply plug 909, and the rear of the air supply plug 909 is fixedly connected with an air supply pipe 910, the rear part of the air supply pipe 910 is sleeved with a connecting pipe 911, and the connecting pipe 911 is slidably connected to the air box 601 through the through port 603, and the connecting pipe 911 is engaged and connected with the air pressure port 606;

[0033] The specific operation is as follows. When in use, first place the engine cylinder block and cylinder head on the lower and upper lifting plates 905 respectively, and make them located in the center of the bottom frame 906, and connect the air supply plug 909 to the cylinder block and cylinder head, then the telescopic rod 907 drives the clamping plate 908 to approach the cylinder block and cylinder head, clamp them, and after the clamping is firm, the remaining holes on the cylinder block and cylinder head are blocked, and the lifting rod 901 can drive the lifting plate 905 to move through the lower pressure plate 902, so that it is close to the detection box 1, and the cylinder block and cylinder head are placed. The cover is sent into the inspection box 1, and the bottom frame 906 can cooperate with the sealing groove 3 and the lifting plate 905 to seal the inspection box 1 to avoid leakage of the inspection box 1 during the airtightness test, which may cause a large error in the test result. In summary, the engine cylinder block and cylinder head can be conveniently fixed during use, and it is convenient to supply air to the inside. After the cylinder block and cylinder head are sent into the inspection box 1, the connecting pipe 911 can be inserted into the air box 601 through the through port 603 and engaged with the air pressure port 606. As the lifting rod 901 drives the pressure down, the connecting pipe 911 can be inserted into the air box 601 through the through port 603 and engaged with the air pressure port 606. The plate 902 continues to move, the lower pressure plate 902 compresses the buffer spring 904 and drives the arc plate 903 to push the connecting pipe 911. The buffer spring 904 can prevent the lifting plate 905 from being subjected to excessive force, resulting in pressure loss between the lifting plate 905 and the detection box 1, causing the seal of the detection box 1 to be damaged. The arc plate 903 pushes the connecting pipe 911 to move in the air box 601, and can drive the compressed air plate 605 to slide in the air box 601 through the compressed air port 606 and stretch the compressed air spring 604, so that the compressed air plate 605 and the isolation plate 606 are in contact with each other. 02 is squeezed into the air supply pipe 910 from the air compression port 606 through the connecting pipe 911. After the air enters the air supply pipe 910, it can enter the cylinder block and cylinder head of the engine through the air supply plug 909, and then be tested for air tightness. When the air compression plate 605 contacts the isolation plate 602, the air supply is completed, thereby achieving the effect of quantitative air supply, which is convenient for judging the degree of leakage during the air tightness test. In summary, when in use, the engine can be quantitatively supplied with air, thereby judging the degree of air supply.

[0034] In summary, when using this engine testing equipment, first place the engine cylinder block and cylinder head on the lower and upper lifting plates 905 respectively, and make them located in the center of the bottom frame 906 and connect the air supply plug 909 to the cylinder block and cylinder head, then the telescopic rod 907 drives the clamping plate 908 to approach the cylinder block and cylinder head, clamp them, and after the clamping is firm, the remaining holes on the cylinder block and cylinder head are blocked, and the lifting rod 901 can drive the lifting plate 905 to move through the lower pressure plate 902 to make it close to the test box 1, and send the cylinder block and cylinder head into the test box 1, the bottom frame 906 can cooperate with the sealing groove 3 and the lifting plate 905 to seal the test box 1, so as to avoid leakage of the test box 1 during the airtight test, resulting in large errors in the test results, and when the engine cylinder block and cylinder head enter After the inspection box 1 is inserted, the plug 207 can seal the cylinder mouth on the cylinder body and the cylinder head. When the bottom frame 906 is inserted into the sealing groove 3 and cooperates with the lifting plate 905 to seal the inspection box 1, the bottom frame 906 contacts the contact 4, which can make the contact 4 energize the probe 5, so that the probe 5 scans the inside of the cylinder body and the cylinder head to detect the missing metal parts. After confirming that all the internal metal parts have been installed, the lifting rod 901 can drive the lower pressure plate 902 to continue to move for air tightness detection. After the cylinder body and the cylinder head are sent into the inspection box 1, the connecting pipe 911 can be inserted into the air box 601 through the through port 603 and engage with the compressed air port 606. As the lifting rod 901 drives the lower pressure plate 902 to continue to move, the lower pressure plate 902 compresses the buffer spring 904 and drives The arc plate 903 pushes the connecting tube 911, and the buffer spring 904 can prevent the lifting plate 905 from being subjected to excessive force, resulting in pressure loss between the lifting plate 905 and the detection box 1, which will cause the seal of the detection box 1 to be damaged. The arc plate 903 pushes the connecting tube 911 to move in the air box 601, and can drive the compressed air plate 605 to slide in the air box 601 through the compressed air port 606 and stretch the compressed air spring 604, so that the air between the compressed air plate 605 and the isolation plate 602 is squeezed into the air supply pipe 910 from the compressed air port 606 through the connecting tube 911. After the air enters the air supply pipe 910, it can enter the cylinder block and cylinder head of the engine through the air supply plug 909, and then perform an air tightness test on it. When the compressed air plate 605 contacts the isolation plate 602, the air supply is completed, thereby achieving the effect of quantitative air supply. The result is convenient for judging the degree of leakage during air tightness detection. During air tightness detection, air enters the engine cylinder block and cylinder head from the air supply plug 909. If there is no leakage on the engine cylinder block and cylinder head, the air slide plate 203 and the identification plate 210 will not slide in the detection plate 201 and the identification rod 209. If there is leakage in the cylinder of the cylinder block and cylinder head, the exposed air will enter the sealing tube 206 and enter the ventilation chamber 202 through the air inlet 205, so that the air slide plate 203 slides in the ventilation chamber 202. According to the position of the sliding air slide plate 203, it can be judged whether the leakage is in the cylinder of the cylinder block or the cylinder head. If there is leakage in other places of the cylinder block and the cylinder head, the leaked gas will enter the identification rod 209 through the ventilation groove 208.The identification plate 210 is made to slide in the identification rod 209. According to the identification rod 209 where the sliding identification plate 210 is located, it can be determined whether the air leakage occurs on the cylinder body or the cylinder head. The degree of air leakage can be determined by the sliding distance of the air slide plate 203 and the identification plate 210 on the ventilation chamber 202 and the identification rod 209. The transparent detection plate 201 and the identification rod 209 facilitate observation of the air slide plate 203 and the identification plate 210. The scale bars set at both ends of the detection plate 201 and the surface of the identification rod 209 also facilitate quantification of the moving distance of the air slide plate 203 and the identification plate 210.

[0035] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An engine testing device, characterized in that: The invention comprises a detection box (1) and a detection assembly (2), wherein the detection box (1) is provided with the detection assembly (2), wherein the detection assembly (2) comprises a detection plate (201), a ventilation chamber (202), an air slide plate (203), a partition plate (204), an air inlet (205), a sealing tube (206), a sealing plug (207), a ventilation groove (208), an identification rod (209) and an identification plate (210), wherein the detection box (1) is fixedly connected with the detection plate (201) in the middle part, and the ventilation chamber (202) is provided inside the detection plate (201), and the ventilation chamber (202) has two left and right sides. An air slide plate (203) is symmetrically slidably connected to the side, and a partition plate (204) is fixedly connected to the middle of the ventilation chamber (202); air inlets (205) are symmetrically opened on the upper and lower surfaces of the detection plate (201), and a sealing tube (206) is symmetrically fixedly connected to the upper and lower sides of the detection plate (201); a sealing plug (207) is arranged inside the sealing tube (206); ventilation grooves (208) are arranged on the upper and lower sides of the right wall of the detection box (1), and an identification rod (209) is fixedly connected to the right side of the ventilation groove (208), and an identification plate (210) is slidably connected inside the identification rod (209).

2. An engine testing device according to claim 1, characterized in that: The detection plate (201) and the identification rod (209) are both made of transparent materials, and scale bars are provided at both ends of the detection plate (201) and on the surface of the identification rod (209). The air inlet (205) is located inside the sealing tube (206), and the sealing plug (207) is fixedly connected to the detection plate (201).

3. The engine detection device according to claim 1, characterized in that: The detection box (1) is symmetrically provided with sealing grooves (3) on the upper and lower sides, and contacts (4) are fixedly connected in the sealing grooves (3). Probes (5) are symmetrically provided on the left and right sides of the inner wall of the detection box (1).

4. The engine testing device according to claim 1, characterized in that: An air supply assembly (6) is arranged at the rear of the detection box (1), and the air supply assembly (6) comprises an air box (601) and an isolation plate (602). The air box (601) is fixedly connected to the rear of the detection box (1), and the isolation plate (602) is fixedly connected to the upper middle portion of the air box (601).

5. An engine testing device according to claim 4, characterized in that: The air supply assembly (6) further comprises a through opening (603), an air compression spring (604), an air compression plate (605) and an air compression port (606); the through opening (603) is symmetrically provided on the upper and lower walls of the air box (601); and the air compression spring (604) is symmetrically fixedly connected to the upper and lower sides of the air box (601); and the other end of the air compression spring (604) is fixedly connected to the air compression plate (605); and the air compression port (606) is fixedly connected to the surface of the air compression plate (605).

6. An engine testing device according to claim 5, characterized in that: The air compression plate (605) is fitted with the inner wall of the air box (601), and the air compression plate (605) is elastically connected to the air box (601) via an air compression spring (604), and the central axis of the air compression port (606) coincides with the central axis of the through port (603).

7. The engine testing device according to claim 5, characterized in that: The four corners of the detection box (1) are symmetrically fixedly connected with support rods (7), and the upper and lower sides of the support rods (7) are symmetrically fixedly connected with a bottom plate (8), and a clamping assembly (9) is provided on one side of the bottom plate (8) close to the detection box (1).

8. An engine testing device according to claim 7, characterized in that: The clamping assembly (9) comprises a lifting rod (901), a lower pressure plate (902), an arc plate (903) and a buffer spring (904); the lifting rod (901) is fixedly connected to one side of the bottom plate (8) close to the detection box (1), and the other end of the lifting rod (901) is fixedly connected to the lower pressure plate (902); the arc plate (903) is fixedly connected to the rear side of the lower pressure plate (902), and the buffer spring (904) is fixedly connected to the other side of the lower pressure plate (902).

9. The engine testing device according to claim 8, characterized in that: The clamping assembly (9) further comprises a lifting plate (905), a bottom frame (906), a telescopic rod (907) and a clamping plate (908); the other end of the buffer spring (904) is fixedly connected to the lifting plate (905), and the surface of the lifting plate (905) is fixedly connected to the bottom frame (906); the left and right sides of the bottom frame (906) are symmetrically fixedly connected to the telescopic rod (907), and the other end of the telescopic rod (907) is fixedly connected to the clamping plate (908); the lifting plate (905) is elastically connected to the lower pressure plate (902) via the buffer spring (904).

10. An engine testing device according to claim 9, characterized in that: The clamping assembly (9) further comprises an air supply plug (909), an air supply pipe (910) and a connecting pipe (911); the air supply plug (909) is fixedly connected to the rear side of the bottom frame (906), and the air supply pipe (910) is fixedly connected to the rear of the air supply plug (909); the connecting pipe (911) is sleeved on the rear of the air supply pipe (910), and the connecting pipe (911) is slidably connected to the air box (601) through the through port (603); and the connecting pipe (911) is snap-fitted and connected to the air pressure port (606).

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