A coating thickness detection device for engine combustion chamber

Abstract

The present invention discloses a device for detecting the coating thickness of an engine combustion chamber, and relates to the technical field of detecting the coating thickness of an engine combustion chamber. The device comprises a mechanical arm arranged above an operating table for assisting the detection of the coating thickness of the combustion chamber inside the engine body. In the process of detecting the coating thickness of the engine combustion chamber, the present invention can shield and protect the ultrasonic thickness gauge in the moving process through the cooperation of the protective component, the first telescopic component, the second telescopic component, the transmission component and the coating component, and avoid the ultrasonic thickness gauge from being damaged by the collision. At the same time, the coupling agent can be extruded and discharged while the fan-shaped protective plates of each group are dispersed and contracted, and the coating is evenly applied at multiple points, thereby ensuring the spraying effect of the coupling agent and the accuracy of the ultrasonic thickness gauge in detecting the coating thickness of the combustion chamber of the engine body.

Description

Technical Field

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

[0002] During the production process of the engine, a coating is applied inside the combustion chamber of the engine in order to achieve the goals of improving antioxidant performance, improving heat resistance, improving combustion efficiency, reducing engine emissions, reducing engine noise, improving wear resistance and sealing performance, and extending service life.

[0003] In order to ensure the quality of the coating inside the engine combustion chamber, it is necessary to measure the coating thickness inside the engine combustion chamber. The use of an ultrasonic thickness gauge in conjunction with a robotic arm is a conventional technical means for detecting the coating thickness inside the engine combustion chamber, which can achieve the advantages of non-destructive detection, high precision, rapid measurement and a wide range of applications. In the process of detection using this method, firstly, the cavity wall inside the engine combustion chamber is in an irregular state. When the ultrasonic thickness gauge is driven to move by the robotic arm, it is easy to cause the front end of the ultrasonic thickness gauge to collide with the cavity wall inside the engine combustion chamber and be damaged. Secondly, during the use of the ultrasonic thickness gauge, it is necessary to use a material pipe to spray a coupling agent on the cavity wall inside the engine combustion chamber for auxiliary detection. This spraying method is a single-point spraying method, and the spraying effect and uniformity are difficult to guarantee, which affects the accuracy of subsequent thickness detection. For this reason, we propose an engine combustion chamber coating thickness detection device. Summary of the invention

[0004] The object of the present invention is to provide a device for detecting the coating thickness of an engine combustion chamber to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a device for detecting the thickness of a coating on a combustion chamber of an engine, comprising a mechanical arm arranged above an operating table for assisting in detecting the thickness of a coating on a combustion chamber inside an engine body, a clamping assembly for positioning and placing the engine body arranged above the operating table, and an ultrasonic thickness gauge for detecting the thickness of a coating on a combustion chamber of the engine body arranged at the front end of the mechanical arm;

[0006] Also includes:

[0007] A U-shaped frame, wherein the U-shaped frame is detachably mounted on the front end of the mechanical arm by means of bolts, a mounting seat is provided on one side of the U-shaped frame, the ultrasonic thickness gauge is mounted on the mounting seat, an adaptive adjustment component for adaptively adjusting the detection state during the measurement process is provided between the mounting seat and the U-shaped frame, and a protective component for protecting the ultrasonic thickness gauge is provided on the mounting seat;

[0008] The protection components are provided in multiple groups, and the multiple groups of protection components are arranged in a circular array on the mounting seat. The protection components include a mounting plate arranged on the front side of the mounting seat, a first telescopic component for assisting the telescopic connection of the mounting plate is arranged between the mounting plate and the mounting seat, a fan-shaped protection plate for shielding and protecting the ultrasonic thickness gauge is arranged on the front side of the ultrasonic thickness gauge detection head, a second telescopic component for assisting the telescopic connection of the fan-shaped protection plate is arranged between the fan-shaped protection plate and the mounting plate, a transmission component for contracting the fan-shaped protection plate is arranged between the ultrasonic thickness gauge and the fan-shaped protection plate, and a coating component for coating coupling agent during the ultrasonic thickness gauge detection process is arranged on each group of the fan-shaped protection plates.

[0009] Preferably, the transmission assembly includes an inclined surface arranged on the side of the fan-shaped protective plate close to the ultrasonic thickness gauge, a mounting ring is fixed to the outer side of the ultrasonic thickness gauge, and a transmission pin for resisting the inclined surface for transmission is fixed to the mounting ring.

[0010] Preferably, the first telescopic assembly includes multiple groups of sleeves fixed on one side of the mounting seat, the sleeves are slidably connected with a sliding rod, one end of the sliding rod is fixed to the mounting plate, and the outer side of the sleeve is sleeved with a first spring, and the two ends of the first spring are respectively set to resist the mounting seat and the mounting plate.

[0011] Preferably, the second telescopic assembly includes multiple groups of T-shaped rods slidably connected to the mounting plate, one end of the T-shaped rod is fixed to the fan-shaped protective plate, and a second spring is sleeved on the outer side of each group of T-shaped rods, and the two ends of the second spring are respectively set to resist the mounting plate and the fan-shaped protective plate.

[0012] Preferably, the coating component includes a push plate slidably connected to the inside of the fan-shaped protective plate, and the inside of the fan-shaped protective plate forms a liquid storage chamber and an operation chamber under the dividing action of the push plate, the inside of the liquid storage chamber is filled with a coupling agent that assists the ultrasonic thickness gauge in detection, a push rod is slidably connected to the fan-shaped protective plate, one end of the push rod is fixed to the push plate, and a sliding component for sliding connection between the push rod and the mounting seat is arranged between the other end of the push rod and the mounting seat, a liquid outlet component for discharging the coupling agent in the liquid storage chamber and a feeding component for feeding are arranged on the fan-shaped protective plate, and a rolling support component for spacing control during the coating process is arranged on one side of the fan-shaped protective plate.

[0013] Preferably, the liquid outlet component includes a plurality of groups of arc-shaped discharge frames fixed on the front side of the fan-shaped protective plate, each group of the arc-shaped discharge frames is arranged in an embedded state, and a first one-way valve is installed between the arc-shaped discharge frame and the liquid storage chamber, and the conducting direction of the first one-way valve is from the inside of the liquid storage chamber to the outside of the arc-shaped discharge frame.

[0014] Preferably, the feed assembly includes an annular cover fixed on one side of the mounting seat, a liquid supply pipe is connected between the annular cover and the liquid storage cavity of the sector-shaped protective plate, a second one-way valve is installed inside the liquid supply pipe, and the conduction direction of the second one-way valve is from the liquid supply pipe to the inside of the liquid storage cavity, a storage box for coupling agent storage is installed on the U-shaped frame, and a delivery pipe for coupling agent delivery is connected between the storage box and the annular cover.

[0015] Preferably, the sliding assembly comprises a mounting frame fixed to one side of the push rod, a slide plate is slidably connected to the mounting frame, and the slide plate is fixed to one side of the mounting seat.

[0016] Preferably, the rolling support assembly includes a plurality of groups of spherical grooves provided on the front side of the sector-shaped protective plate, and each group of the spherical grooves is rotatably connected with a ball for supporting against a coating of a combustion chamber inside the engine body.

[0017] Preferably, the adaptive adjustment component includes a rotating groove opened on one side of the mounting seat, a rotating ball is rotatably connected to the rotating groove, the rotating ball is connected and fixed to the U-shaped frame by a fixing rod, two groups of transmission rods are fixed on one side of the mounting seat, the two groups of transmission rods are symmetrically arranged on both sides of the ultrasonic thickness gauge, and the front end of the transmission rod is flush with the front end of the ultrasonic thickness gauge.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] During the process of detecting the coating thickness of the engine combustion chamber, the protective component, the first telescopic component, the second telescopic component, the transmission component and the coating component cooperate with each other, so as to shield and protect the ultrasonic thickness gauge in the moving process, avoid the ultrasonic thickness gauge from being damaged by collision, and at the same time, the coupling agent can be extruded and discharged while the fan-shaped protective plates of each group are dispersed and contracted, so as to present a multi-point uniform coating, ensure the spraying effect of the coupling agent, and ensure the accuracy of the ultrasonic thickness gauge in detecting the coating thickness of the engine body combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the mechanical arm and the U-shaped frame of the present invention;

[0022] Figure 3 It is a schematic diagram of the relationship between the adaptive adjustment component of the present invention, the U-shaped frame and the mounting seat;

[0023] Figure 4 It is a schematic diagram of the ultrasonic thickness gauge of the present invention being against the inner wall of a vertical engine combustion chamber under the action of an adaptive adjustment component;

[0024] Figure 5 It is a schematic diagram of the ultrasonic thickness gauge of the present invention being against the inner wall of the inclined engine combustion chamber under the action of the adaptive adjustment component;

[0025] Figure 6 It is a schematic diagram of the structure of the feeding assembly of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the first telescopic assembly of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the protection component of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the second telescopic assembly and the transmission assembly of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the smearing component, the liquid outlet component and the rolling support component of the present invention.

[0030] In the figure: 101-operating table; 102-engine body; 103-ultrasonic thickness gauge; 104-mechanical arm; 2-U-shaped frame; 3-mounting seat; 401-rotating groove; 402-rotating ball; 403-fixing rod; 404-transmission rod; 501-mounting plate; 502-sector-shaped protective plate; 601-sleeve; 602-sliding rod; 603-first spring; 701-T-shaped rod; 702-second spring Spring; 801- inclined plane; 802- mounting ring; 803- transmission pin; 901- push plate; 902- push rod; 1001- mounting frame; 1002- slide plate; 1101- arc-shaped discharge frame; 1102- first one-way valve; 1201- annular cover; 1202- storage box; 1203- delivery pipe; 1204- liquid supply pipe; 1205- second one-way valve; 1301- spherical groove; 1302- ball. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1-Figure 10, a device for detecting the coating thickness of an engine combustion chamber shown in the figure comprises a mechanical arm 104 arranged above an operating table 101 for assisting detection of the coating thickness of the combustion chamber inside an engine body 102, a clamping assembly for positioning and placing the engine body 102 is arranged above the operating table 101, and an ultrasonic thickness gauge 103 for detecting the coating thickness of the combustion chamber of the engine body 102 is arranged at the front end of the mechanical arm 104;

[0033] It should be noted here that the principle of using the ultrasonic thickness gauge 103 to detect the thickness of the engine combustion chamber coating is mainly based on the ultrasonic pulse reflection principle. When the front end of the ultrasonic thickness gauge 103 transmits ultrasonic pulses to the surface of the object to be measured, these pulses will penetrate the coating and partially reflect when encountering the interface of different media such as the interface between the coating and the substrate. The reflected ultrasonic pulses are then received by the sensor of the thickness gauge, thereby calculating and detecting the thickness of the engine combustion chamber coating. The working principle and operation method of the ultrasonic thickness gauge 103 are relatively mature, and are used as prior art in this application, and will not be described in detail here.

[0034] Also includes:

[0035] A U-shaped frame 2, which is detachably mounted on the front end of the robot arm 104 by means of bolts, a mounting seat 3 is provided on one side of the U-shaped frame 2, and the ultrasonic thickness gauge 103 is mounted on the mounting seat 3, an adaptive adjustment component for adaptively adjusting the detection state during the measurement process is provided between the mounting seat 3 and the U-shaped frame 2, and a protective component for protecting the ultrasonic thickness gauge 103 is provided on the mounting seat 3;

[0036] There are multiple groups of protection components, and the multiple groups of protection components are arranged in a ring array on the mounting seat 3. The protection components include a mounting plate 501 arranged on the front side of the mounting seat 3, a first telescopic component for assisting the mounting plate 501 to be telescopically connected is arranged between the mounting plate 501 and the mounting seat 3, a fan-shaped protection plate 502 for shielding and protecting the ultrasonic thickness gauge 103 is arranged on the front side of the detection head of the ultrasonic thickness gauge 103, a second telescopic component for assisting the fan-shaped protection plate 502 to be telescopically connected is arranged between the fan-shaped protection plate 502 and the mounting plate 501, a transmission component for contracting the fan-shaped protection plate 502 is arranged between the ultrasonic thickness gauge 103 and the fan-shaped protection plate 502, and a coating component for coating coupling agent during the detection process of the ultrasonic thickness gauge 103 is arranged on each group of fan-shaped protection plates 502;

[0037] It should be noted here that: during the process of detecting the coating thickness of the engine combustion chamber, the protective component, the first telescopic component, the second telescopic component, the transmission component and the coating component cooperate with each other, so as to shield and protect the ultrasonic thickness gauge 103 during movement, and prevent the ultrasonic thickness gauge 103 from being damaged by collision. At the same time, the coupling agent can be extruded and discharged while each group of fan-shaped protective plates 502 moves in a dispersed and contracted manner, presenting a multi-point uniform coating, thereby ensuring the spraying effect of the coupling agent and ensuring the accuracy of the ultrasonic thickness gauge 103 in detecting the coating thickness of the combustion chamber of the engine body 102.

[0038] Preferably, the transmission assembly includes an inclined surface 801 disposed on the side of the fan-shaped protection plate 502 close to the ultrasonic thickness gauge 103, a mounting ring 802 is fixed to the outer side of the ultrasonic thickness gauge 103, and a transmission pin 803 for abutting against the inclined surface 801 for transmission is fixed to the mounting ring 802;

[0039] It should be noted here that: in the process of driving the U-shaped frame 2 by the mechanical arm 104 to move the ultrasonic thickness gauge 103 on the mounting seat 3 toward the position to be detected, as the mounting seat 3 moves, the balls 1302 on the fan-shaped protective plates 502 in the front end of the ultrasonic thickness gauge 103 first abut against the cavity wall to be detected, and the fan-shaped protective plates 502 are limited by the abutment between the balls 1302 and the cavity wall. With the telescopic connection of the first telescopic component and the continued movement of the mounting seat 3, the mounting seat 3 and the ultrasonic thickness gauge 103 move toward the fan-shaped protective plates 502 that are limited by the abutment. During the movement, the end of the transmission pin 803 on the mounting ring 802 abuts against the inclined surface 801 on the back of the fan-shaped protective plate 502. During the abutment, the telescopic connection of the second telescopic component to the fan-shaped protective plate 502 causes the fan-shaped protective plates 502 to retract and move away from each other after being stressed.

[0040] Preferably, the first telescopic assembly includes a plurality of sleeves 601 fixed on one side of the mounting seat 3, a slide bar 602 is slidably connected to the sleeve 601, one end of the slide bar 602 is fixed to the mounting plate 501, a first spring 603 is sleeved on the outer side of the sleeve 601, and both ends of the first spring 603 are respectively set against the mounting seat 3 and the mounting plate 501;

[0041] It should be noted here that: each set of sleeves 601 and slide bars 602 facilitates the telescopic connection between the mounting plate 501 and the mounting seat 3, and each set of first springs 603 facilitates the resetting of the mounting plate 501 after movement.

[0042] Preferably, the second telescopic assembly includes a plurality of groups of T-shaped rods 701 slidably connected to the mounting plate 501, one end of the T-shaped rod 701 is fixed to the fan-shaped protective plate 502, and a second spring 702 is sleeved on the outer side of each group of T-shaped rods 701, and the two ends of the second spring 702 are respectively set against the mounting plate 501 and the fan-shaped protective plate 502;

[0043] It should be noted here that: each group of T-shaped rods 701 facilitates the telescopic connection between the fan-shaped protection plate 502 and the mounting plate 501, and each group of second springs 702 facilitates the reset of the fan-shaped protection plate 502 after the contraction movement.

[0044] Preferably, the smearing assembly includes a push plate 901 slidably connected to the inside of the fan-shaped protective plate 502, and the inside of the fan-shaped protective plate 502 forms a liquid storage chamber and an operation chamber under the segmentation effect of the push plate 901, and the inside of the liquid storage chamber is filled with a coupling agent that assists the ultrasonic thickness gauge 103 in detection. A push rod 902 is slidably connected to the fan-shaped protective plate 502, one end of the push rod 902 is fixed to the push plate 901, and a sliding assembly for slidingly connecting the push rod 902 and the mounting seat 3 is provided between the other end of the push rod 902 and the mounting seat 3. The fan-shaped protective plate 502 A liquid discharge assembly for discharging the coupling agent in the liquid storage cavity and a material supply assembly for supplying material are arranged on the upper side, and a rolling support assembly for controlling the spacing during the coating process is arranged on one side of the fan-shaped protective plate 502; the liquid discharge assembly includes a plurality of groups of arc-shaped discharge frames 1101 fixed on the front side of the fan-shaped protective plate 502, and each group of arc-shaped discharge frames 1101 is arranged in an embedded state, and a first one-way valve 1102 is installed between the arc-shaped discharge frame 1101 and the liquid storage cavity, and the conducting direction of the first one-way valve 1102 is from the inside of the liquid storage cavity to the outside of the arc-shaped discharge frame 1101;

[0045] It should be noted here that: during the movement of each group of fan-shaped protection plates 502 after the mounting seat 3 and the ultrasonic thickness gauge 103 are close to and limit each other, the movement of the mounting seat 3 and the sliding connection of the sliding assembly drive the push rod 902 to move toward the inside of the fan-shaped protection plate 502. During the movement, the push plate 901 is pushed to move toward the liquid storage cavity inside the fan-shaped protection plate 502. Because the inside of the liquid storage cavity is filled with a coupling agent that assists the ultrasonic thickness gauge 103 in detection, and the conduction direction of the first one-way valve 1102 is from the inside of the liquid storage cavity to the outside of the arc-shaped discharge frame 1101, the pushing and squeezing action of the push plate 901 causes the coupling agent to be squeezed outward from each group of arc-shaped discharge frames 1101 along with the dispersed and contracted movement of each group of fan-shaped protection plates 502 and fall to the position to be detected on the combustion chamber wall of the engine body 102, and the coating operation is performed on the coupling agent for auxiliary detection.

[0046] Preferably, the feeding assembly includes an annular cover 1201 fixed to one side of the mounting seat 3, a liquid supply pipe 1204 is connected between the annular cover 1201 and the liquid storage cavity of the sector protection plate 502, a second one-way valve 1205 is installed inside the liquid supply pipe 1204, and the conducting direction of the second one-way valve 1205 is from the liquid supply pipe 1204 to the inside of the liquid storage cavity, a storage box 1202 for storing coupling agent is installed on the U-shaped frame 2, and a delivery pipe 1203 for delivering coupling agent is connected between the storage box 1202 and the annular cover 1201;

[0047] It should be noted here that: after the detection is completed, the fan-shaped protective plate 502, the mounting seat 3 and the push plate 901 are reset. During the resetting process of the push plate 901, a negative pressure is generated inside the liquid storage chamber. Since the conduction direction of the second one-way valve 1205 is from the liquid supply pipe 1204 to the inside of the liquid storage chamber, the coupling agent stored in the storage box 1202 is transported to the inside of the liquid storage chamber through the delivery pipe 1203, the annular cover 1201 and the liquid supply pipe 1204 under the action of pressure.

[0048] Preferably, the sliding assembly includes a mounting frame 1001 fixed to one side of the push rod 902, a slide plate 1002 is slidably connected to the mounting frame 1001, and the slide plate 1002 is fixed to one side of the mounting seat 3;

[0049] It should be noted here that: during the contraction or gathering movement of the fan-shaped protective plate 502, the push plate 901 and the push rod 902 are driven to move synchronously. In order to avoid the push rod 902 restricting the movement of the fan-shaped protective plate 502, the installation frame 1001 and the slide plate 1002 are cooperated so that one end of the push rod 902 is slidably connected to one side of the mounting seat 3.

[0050] Preferably, the rolling support assembly includes a plurality of groups of spherical grooves 1301 provided on the front side of the sector-shaped protection plate 502, and each group of spherical grooves 1301 is rotatably connected with a ball 1302 for supporting against the combustion chamber coating inside the engine body 102;

[0051] It should be noted here that: in the process of driving the U-shaped frame 2 by the mechanical arm 104 to move the ultrasonic thickness gauge 103 on the mounting seat 3 toward the position to be detected, as the mounting seat 3 moves, the balls 1302 on the fan-shaped protective plates 502 in each group at the front end of the ultrasonic thickness gauge 103 first abut against the cavity wall to be detected, and the abutment between the balls 1302 and the cavity wall creates a gap between the fan-shaped protective plates 502 and the cavity wall, which is convenient for the subsequent discharge operation of the coupling agent, and the rolling action of the balls 1302 on the spherical grooves 1301 facilitates the movement operation of the fan-shaped protective plates 502 after the auxiliary force is applied.

[0052] Preferably, the adaptive adjustment component includes a rotating groove 401 opened on one side of the mounting seat 3, a rotating ball 402 is rotatably connected to the rotating groove 401, the rotating ball 402 is connected and fixed to the U-shaped frame 2 through a fixing rod 403, and two groups of transmission rods 404 are fixed on one side of the mounting seat 3, and the two groups of transmission rods 404 are symmetrically arranged on both sides of the ultrasonic thickness gauge 103, and the front end of the transmission rod 404 is flush with the front end of the ultrasonic thickness gauge 103;

[0053] It should be noted here that: in the process of driving the ultrasonic thickness gauge 103 to abut against the wall of the combustion chamber of the engine body 102, an adaptive adjustment component is used to adapt to the different shapes of the wall to be detected, so that the ultrasonic thickness gauge 103 and the wall of the cavity to be detected are in a vertical state, further ensuring the accuracy of the ultrasonic thickness gauge 103 in detecting the thickness of the combustion chamber coating of the engine body 102.

[0054] In this scheme: a device for detecting the thickness of a coating in an engine combustion chamber comprises the following steps:

[0055] During the process of testing the coating thickness of the engine combustion chamber, the U-shaped frame 2 at the front end is driven by the mechanical arm 104 to extend into the combustion chamber of the engine body 102, and the U-shaped frame 2 is driven to move toward the corresponding position inside the combustion chamber of the engine body 102. During the movement, since each group of fan-shaped protective plates 502 is located in front of the ultrasonic thickness gauge 103, each group of fan-shaped protective plates 502 shields and protects the ultrasonic thickness gauge 103 during the movement, so as to prevent the ultrasonic thickness gauge 103 from being damaged by collision with the cavity wall of the combustion chamber of the engine body 102 during the detection and movement when the ultrasonic thickness gauge 103 is in an exposed state;

[0056] In the process of driving the U-shaped frame 2 by the mechanical arm 104 to move the ultrasonic thickness gauge 103 on the mounting seat 3 toward the position to be detected, as the mounting seat 3 moves, the balls 1302 on the fan-shaped protective plates 502 at the front end of the ultrasonic thickness gauge 103 first abut against the cavity wall to be detected, and the fan-shaped protective plates 502 are abutted against each other by the abutment between the balls 1302 and the cavity wall. And as the telescopic connection of the first telescopic component and the continued movement of the mounting seat 3, the mounting seat 3 and the ultrasonic thickness gauge 103 are close to the groups of the abutment limit. The sector protection plate 502 moves, and during the movement, the end of the driving pin 803 on the mounting ring 802 is abutted against the inclined surface 801 on the back of the sector protection plate 502. During the abutment, the second telescopic component is used to connect the sector protection plate 502, so that each group of sector protection plates 502 after being stressed can move away from each other. Through the contraction movement of each group of sector protection plates 502, it is convenient to make the ultrasonic thickness gauge 103 abut against the cavity wall to be detected inside the combustion chamber, and the mounting seat 3 and the ultrasonic thickness gauge 103 are close to each other. During the movement of each group of fan-shaped protective plates 502 after the limit is offset, the movement of the mounting seat 3 and the sliding connection of the sliding assembly drive the push rod 902 to move toward the inside of the fan-shaped protective plate 502. During the movement, the push plate 901 is pushed to move toward the liquid storage cavity inside the fan-shaped protective plate 502. Because the inside of the liquid storage cavity is filled with a coupling agent that assists the ultrasonic thickness gauge 103 in detection, and the conduction direction of the first one-way valve 1102 is from the inside of the liquid storage cavity to the outside of the arc-shaped discharge frame 1101, the push and squeeze action of the push plate 901 The coupling agent is used to extrude outward from each group of arc-shaped discharge frames 1101 and fall to the position to be detected on the combustion chamber wall of the engine body 102 along with the dispersion and contraction movement of each group of fan-shaped protective plates 502, and the auxiliary detection coupling agent is subjected to coating operation. In the whole coating process, the coupling agent is extruded and discharged while the fan-shaped protective plates 502 are dispersed and contracted, and the coating is evenly applied at multiple points, thereby ensuring the spraying effect of the coupling agent and further ensuring the accuracy of the ultrasonic thickness gauge 103 in detecting the coating thickness of the combustion chamber of the engine body 102;

[0057] In the process of driving the ultrasonic thickness gauge 103 to abut against the combustion chamber wall of the engine body 102, since the front ends of the two transmission rods 404 are flush with the front ends of the ultrasonic thickness gauge 103, when the cavity wall to be tested is in a horizontal or vertical state, the front ends of the ultrasonic thickness gauge 103 and the two transmission rods 404 abut against the cavity wall at the same time (see Figure 4), and when the cavity wall to be detected is in an inclined state, due to the shape of the cavity wall, during the movement, a transmission rod 404 first abuts against the cavity wall, and through the rotatable connection of the rotating groove 401 and the rotating ball 402 to the mounting seat 3 and the continued movement of the mounting seat 3, the mounting seat 3 is tilted and rotated, and finally the front ends of the ultrasonic thickness gauge 103 and the two sets of transmission rods 404 are abutted against the cavity wall (see Figure 5 ), adapting to the different shapes of the cavity wall to be detected, so that the ultrasonic thickness gauge 103 is perpendicular to the cavity wall at the position to be detected, further ensuring the accuracy of the ultrasonic thickness gauge 103 in detecting the thickness of the combustion chamber coating of the engine body 102.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine combustion chamber coating thickness detection device, comprising: A mechanical arm (104) arranged above an operating table (101) for assisting detection of the coating thickness of a combustion chamber inside an engine body (102); a clamping assembly for positioning and placing the engine body (102) is arranged above the operating table (101); and an ultrasonic thickness gauge (103) for detecting the coating thickness of the combustion chamber of the engine body (102) is arranged at the front end of the mechanical arm (104); It is characterized by further comprising: A U-shaped frame (2), the U-shaped frame (2) being detachably mounted on the front end of the mechanical arm (104) by means of bolts, a mounting seat (3) being provided on one side of the U-shaped frame (2), the ultrasonic thickness gauge (103) being mounted on the mounting seat (3), an adaptive adjustment component for adaptively adjusting the detection state during the measurement process being provided between the mounting seat (3) and the U-shaped frame (2), and a protective component for protecting the ultrasonic thickness gauge (103) being provided on the mounting seat (3); The protection components are provided in multiple groups, and the multiple groups of protection components are arranged in a ring array on the mounting seat (3), the protection components comprising a mounting plate (501) arranged at the front side of the mounting seat (3), a first telescopic component for assisting the mounting plate (501) in telescopic connection is arranged between the mounting plate (501) and the mounting seat (3), a fan-shaped protection plate (502) for shielding and protecting the ultrasonic thickness gauge (103) is arranged at the front side of the detection head of the ultrasonic thickness gauge (103), a second telescopic component for assisting the fan-shaped protection plate (502) in telescopic connection is arranged between the fan-shaped protection plate (502) and the mounting plate (501), a transmission component for retracting the fan-shaped protection plate (502) is arranged between the ultrasonic thickness gauge (103) and the fan-shaped protection plate (502), and an application component for applying coupling agent during the detection process of the ultrasonic thickness gauge (103) is arranged on each group of the fan-shaped protection plates (502); The transmission assembly comprises an inclined surface (801) arranged on a side of the fan-shaped protection plate (502) close to the ultrasonic thickness gauge (103); a mounting ring (802) is fixed to the outer side of the ultrasonic thickness gauge (103); and a transmission pin (803) is fixed to the mounting ring (802) for transmission against the inclined surface (801); The smearing assembly comprises a push plate (901) slidably connected to the interior of the fan-shaped protective plate (502), and the interior of the fan-shaped protective plate (502) forms a liquid storage chamber and an operation chamber under the segmentation action of the push plate (901), the interior of the liquid storage chamber is filled with a coupling agent that assists the ultrasonic thickness gauge (103) in detection, a push rod (902) is slidably connected to the fan-shaped protective plate (502), one end of the push rod (902) is fixed to the push plate (901), a sliding assembly for slidably connecting the push rod (902) and the mounting seat (3) is provided between the other end of the push rod (902) and the mounting seat (3), a liquid outlet assembly for discharging the coupling agent in the liquid storage chamber and a material supply assembly for supplying material are provided on the fan-shaped protective plate (502), and a rolling support assembly for controlling the spacing during the smearing process is provided on one side of the fan-shaped protective plate (502); The adaptive adjustment component comprises a rotation groove (401) provided on one side of the mounting seat (3); a rotation ball (402) is rotatably connected to the rotation groove (401); the rotation ball (402) is connected and fixed to the U-shaped frame (2) via a fixing rod (403); two groups of transmission rods (404) are fixed to one side of the mounting seat (3); the two groups of transmission rods (404) are symmetrically arranged on both sides of the ultrasonic thickness gauge (103), and the front ends of the transmission rods (404) are flush with the front ends of the ultrasonic thickness gauge (103).

2. The engine combustion chamber coating thickness detection device according to claim 1, characterized in that: The first telescopic assembly comprises a plurality of sleeves (601) fixed on one side of the mounting seat (3), a slide rod (602) being slidably connected to the sleeves (601), one end of the slide rod (602) being fixed to the mounting plate (501), a first spring (603) being sleeved on the outer side of the sleeve (601), and two ends of the first spring (603) being respectively disposed in abutment with the mounting seat (3) and the mounting plate (501).

3. The engine combustion chamber coating thickness detection device according to claim 2, characterized in that: The second telescopic assembly comprises a plurality of groups of T-shaped rods (701) slidably connected to the mounting plate (501), one end of the T-shaped rods (701) being fixed to the fan-shaped protective plate (502), a second spring (702) being sleeved on the outer side of each group of the T-shaped rods (701), and two ends of the second spring (702) being respectively disposed against the mounting plate (501) and the fan-shaped protective plate (502).

4. The engine combustion chamber coating thickness detection device according to claim 3, characterized in that: The liquid discharge assembly comprises a plurality of groups of arc-shaped discharge frames (1101) fixed on the front side of the fan-shaped protective plate (502), each group of the arc-shaped discharge frames (1101) being arranged in an embedded state, a first one-way valve (1102) being installed between the arc-shaped discharge frames (1101) and the liquid storage chamber, and the conducting direction of the first one-way valve (1102) is from the inside of the liquid storage chamber to the outside of the arc-shaped discharge frames (1101).

5. The engine combustion chamber coating thickness detection device according to claim 4, characterized in that: The material supply assembly comprises an annular cover (1201) fixed to one side of the mounting seat (3); a liquid supply pipe (1204) is connected between the annular cover (1201) and the liquid storage cavity of the sector-shaped protective plate (502); a second one-way valve (1205) is installed inside the liquid supply pipe (1204); the conduction direction of the second one-way valve (1205) is from the liquid supply pipe (1204) to the inside of the liquid storage cavity; a storage box (1202) for storing coupling agent is installed on the U-shaped frame (2); a delivery pipe (1203) for delivering coupling agent is connected between the storage box (1202) and the annular cover (1201).

6. The engine combustion chamber coating thickness detection device according to claim 5, characterized in that: The sliding assembly comprises a mounting frame (1001) fixed to one side of the push rod (902), a slide plate (1002) being slidably connected to the mounting frame (1001), and the slide plate (1002) being fixed to one side of the mounting seat (3).

7. The engine combustion chamber coating thickness detection device according to claim 6, characterized in that: The rolling support assembly comprises a plurality of groups of spherical grooves (1301) provided on the front side of the sector-shaped protective plate (502), and each group of the spherical grooves (1301) is rotatably connected with a ball (1302) for supporting against the internal combustion chamber coating of the engine body (102).

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