EGR cooler flatness detection mechanism

Abstract

The utility model discloses an EGR cooler planeness detection mechanism, which relates to the field of detection instruments and comprises a base, a die holder, a support and upright posts, each upright post is detachably provided with a sliding table cylinder, the free end of each sliding table cylinder is provided with a floating mechanism, and the front end of each floating mechanism is elastically connected with a plane detection mechanism. The plane detection mechanism comprises a centering block and a probe which are elastically installed at the front end of the floating mechanism. According to the utility model, the front end of the plane detection mechanism is inserted into the pipeline hole of the flange by utilizing the bulge of the centering block, three probes are utilized to determine a basic plane, and the other probe is used for measuring the flatness, so that the detection efficiency is greatly improved, and the detection precision is improved. And the designed floating mechanism enables the plane detection mechanism to make adaptive angle change along with the inclination angle of the flange, so that the plane detection mechanism is ensured to be in smooth contact with one surface of the flange for detection work, and the practicability of the detection equipment is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of detection equipment, in particular to an EGR cooler flatness detection mechanism. Background Art

[0002] EGR (Exhaust Gas Recirculation) is a mechatronic device installed on diesel engines to control the amount of exhaust gas recirculated back into the intake system. It is typically located on the right side of the intake manifold, near the throttle body, and is connected to a short metal tube that leads to the exhaust manifold. Its function is to control the amount of exhaust gas entering the intake manifold, ensuring a certain amount of exhaust gas is recirculated there.

[0003] The EGR cooler is a very important and key component in the exhaust gas recirculation device. It is used to cool the exhaust gas to reduce the temperature and pressure of the mixture and improve the efficiency of the EGR system.

[0004] After the EGR cooler flange welding is completed, the flatness of the flange needs to be tested to ensure the sealing effect of the connection between the cooler and the valve body and prevent leakage.

[0005] However, the existing detection methods are generally laser scanning or contact detection. Laser scanning is prone to reflection during the detection process and has poor stability. Contact detection requires the probe to analyze and calculate several points on the flange surface. Due to the error of the welding process, the bevel of the flange welded on each product will have an error, resulting in inconsistent flange inclination angles of various products. The probe needs to be adjusted at the time of contact, which is time-consuming and labor-intensive. It is urgent to develop a new type of flatness detection equipment. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an EGR cooler flatness detection mechanism to solve the problems existing in the above-mentioned background technology.

[0007] The utility model provides the following technical solution: an EGR cooler flatness detection mechanism, comprising:

[0008] The base has a handle that can be detachably installed at each of its four corners;

[0009] A mold base, adapted to the cooler and used to support and place the cooler;

[0010] There are three brackets, each with a locating pin on the top. The three locating pins correspond to the three support holes of the cooler respectively.

[0011] There are multiple columns, each of which is detachably mounted with a slide cylinder, the free end of which is provided with a floating mechanism, the front end of which is elastically connected to a plane detection mechanism;

[0012] Among them, the plane detection mechanism includes a centering block and a probe elastically installed at the front end of the floating mechanism. A protrusion for flange pipe adaptation is set at the front center position of the centering block. A groove is opened around the outer surface of the centering block. A probe is set in each groove. Three probes determine a base surface, and the other probe is used to measure flatness.

[0013] Preferably, the floating mechanism includes a mounting seat installed at the free end of the slide cylinder and a swing seat movably installed at the front end of the mounting seat. A spring seat is provided at the front center position of the swing seat, and the centering block is connected to the swing seat through the spring seat.

[0014] Preferably, a rear connecting block is inserted at the center of the mounting seat, and a front connecting block is inserted at the center of the swing seat. The opposite surfaces of the rear connecting block and the front connecting block are provided with concave surfaces, and a steel ball is provided therebetween. The rear end of the rear connecting block is connected to a first spring, and four second springs are provided around the steel ball between the rear connecting block and the front connecting block.

[0015] Preferably, the rear end of the mounting base is provided with four connection terminals, and the four connection terminals are respectively connected to the four probes one by one and correspond to the detection data of the transmission probes.

[0016] Preferably, a protective shell is provided on the top of the mounting seat.

[0017] Preferably, it also includes a rotary pressing cylinder for cooperating with the mold base and the positioning pin to press and fix the cooler.

[0018] Preferably, it also includes a barcode scanner, the installation height of which corresponds to the cooler, and is used to identify the product information of the current cooler.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model utilizes the protrusion of the centering block to insert the front end of the plane detection mechanism into the pipe hole of the flange, and utilizes three probes to determine a base surface, and the other probe is used to measure the flatness. When the measurement of the probe is the same as that of the base surface, the flatness is qualified, otherwise it is unqualified. The existing mechanism scanning detection is replaced, and the detection method only needs to contact one side, which greatly improves the efficiency of the detection. The designed floating mechanism enables the plane detection mechanism to make an adaptive angle change following the inclination angle of the flange, ensuring that the plane detection mechanism can smoothly contact one side of the flange for detection, thereby greatly improving the practicality of the detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 This is a schematic structural diagram of the plane detection mechanism of the present utility model.

[0023] Figure 3 This is a schematic diagram of the exploded structure of the plane detection mechanism of the present utility model.

[0024] Figure 4 This is a schematic diagram of the cooler structure of the present utility model.

[0025] The accompanying drawings are marked as follows: 1. Base; 2. Handle; 3. Mold base; 4. Bracket; 5. Positioning pin; 6. Rotary clamping cylinder; 7. Column; 8. Slide cylinder; 9. Floating mechanism; 91. Mounting seat; 92. Swinging seat; 93. Spring seat; 94. Connecting terminal; 95. Protective shell; 96. Front connecting block; 97. Rear connecting block; 98. First spring; 99. Steel ball; 910. Second spring; 10. Plane detection mechanism; 101. Centering block; 102. Probe; 11. Barcode scanner; 12. Cooler; 121. Flange. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0027] The utility model provides an EGR cooler flatness detection mechanism, such as Figure 1-3 As shown, the EGR cooler flatness detection mechanism 10 includes:

[0028] The base 1 has a handle 2 detachably mounted at each of its four corners;

[0029] The mold base 3 is adapted to the cooler and is used to support and place the cooler;

[0030] There are three brackets 4, each of which has a positioning pin 5 on its top. The three positioning pins 5 correspond to the three support holes of the cooler one by one.

[0031] There are multiple columns 7, each of which has a slide cylinder 8 detachably mounted thereon. A floating mechanism 9 is provided at the free end of the slide cylinder 8, and a plane detection mechanism 10 is elastically connected to the front end of the floating mechanism 9.

[0032] Among them, the plane detection mechanism 10 includes a centering block 101 elastically installed at the front end of the floating mechanism 9 and a probe 102. A protrusion for flange pipe adaptation is provided at the front center position of the centering block 101. A groove is provided around the outer surface of the centering block 101. A probe 102 is provided in each groove. Three probes 102 determine a base surface, and the other probe 102 is used to measure flatness.

[0033] During inspection, the front end of the plane detection mechanism 10 is inserted into the pipe hole of the flange using the protrusion of the set centering block 101, and three of the probes 102 are used to determine a base surface, and the other probe 102 is used to measure the flatness. When the measurement of the probe is the same as that of the base surface, the flatness is qualified, otherwise it is unqualified. It replaces the existing mechanism scanning detection and improves the stability during detection.

[0034] Furthermore, the designed floating mechanism enables the plane detection mechanism 10 to adapt to the angle change following the inclination angle of the flange, ensuring that the plane detection mechanism 10 can smoothly contact one side of the flange for detection, thereby greatly improving the practicality of the detection equipment.

[0035] In this embodiment, the floating mechanism 9 includes a mounting seat 91 installed at the free end of the slide cylinder 8, and a swing seat 92 movably installed at the front end of the mounting seat 91. A spring seat 93 is provided at the front center position of the swing seat 92, and the centering block 101 is connected to the swing seat 92 through the spring seat 93. In the initial state, the swing seat 92 and the mounting seat 91 correspond to each other front and back. When the plane detection mechanism 10 contacts the pipe hole of the flange, the swing seat 92 can swing elastically at the front end of the mounting seat 91 under the action of pressure, so that the end of the plane detection mechanism 10 is inserted into the pipe hole.

[0036] In this embodiment, a rear connecting block 97 is inserted at the center of the mounting seat 91, and a front connecting block 96 is inserted at the center of the swinging seat 92. The opposite surfaces of the rear connecting block 97 and the front connecting block 96 are provided with concave surfaces, and a steel ball 99 is provided therebetween. The rear end of the rear connecting block 97 is connected to a first spring 98. Four second springs 910 are provided around the steel ball 99 between the rear connecting block 97 and the front connecting block 96. The mounting seat 91 and the swinging seat 92 are movably connected through the provided front connecting block 96, the rear connecting block 97 and the steel ball 99. The provided first spring 98 and the second spring 910 are used to make the mounting seat 91 and the swinging seat 92 elastically connected, so that the swinging seat 92 can move freely in any direction at the front end of the mounting seat 91, so that the plane detection mechanism 10 corresponds to the inclined surface of the flange.

[0037] In this embodiment, four connection terminals 94 are provided at the rear end of the mounting base 91 . The four connection terminals 94 are connected to the four probes 102 one by one respectively and are used to transmit the detection data of the probes 102 .

[0038] In this embodiment, a protective shell 95 is provided on the top of the mounting seat 91 .

[0039] In this embodiment, a rotary pressing cylinder 6 is further included, which is used to cooperate with the mold base 3 and the positioning pin 5 to press and fix the cooler.

[0040] In this embodiment, a barcode scanner 11 is also included. The installation height of the barcode scanner 11 corresponds to the cooler. It is used to read the product information of the current cooler and bind the detection data. The operator can obtain the detection data by scanning the code and then know whether the product is qualified.

[0041] In this embodiment, the cooler 12, such as Figure 4 As shown, three supports are provided, and support holes are opened on the supports for installation on the car, and the cooler 12 is provided with multiple pipes, and flanges 121 are provided at both ends of the cooler 12 for connecting to the EGR valve.

[0042] Several points should be explained: First, it should be noted that in the description of this application, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change;

[0043] The above description is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the content disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. EGR cooler flatness detection mechanism, characterized in that: include: The base (1) has a handle (2) detachably mounted at each of its four corners; A mold base (3) adapted to the cooler for supporting and placing the cooler; There are three brackets (4), each of which has a positioning pin (5) on its top, and the three positioning pins (5) correspond to the three support holes of the cooler respectively; There are multiple columns (7), each of which is detachably mounted with a slide cylinder (8), a floating mechanism (9) being provided at the free end of the slide cylinder (8), and a plane detection mechanism (10) being elastically connected to the front end of the floating mechanism (9); The plane detection mechanism (10) comprises a centering block (101) elastically mounted on the front end of the floating mechanism (9) and a probe (102); a protrusion adapted to the flange pipe is provided at the front center of the centering block (101); a groove is provided around the outer surface of the centering block (101); a probe (102) is provided in each groove; three probes (102) determine a base surface, and another probe (102) is used to measure flatness.

2. The EGR cooler flatness detection mechanism according to claim 1, characterized in that: The floating mechanism (9) comprises a mounting seat (91) mounted on the free end of the slide cylinder (8), and a swing seat (92) movably mounted on the front end of the mounting seat (91); a spring seat (93) is provided at the front center of the swing seat (92), and a centering block (101) is connected to the swing seat (92) via the spring seat (93).

3. The EGR cooler flatness detection mechanism according to claim 2, characterized in that: A rear connecting block (97) is plugged into the center of the mounting seat (91), and a front connecting block (96) is plugged into the center of the swing seat (92). The opposite surfaces of the rear connecting block (97) and the front connecting block (96) are provided with concave surfaces, and a steel ball (99) is provided therebetween. The rear end of the rear connecting block (97) is connected to a first spring (98), and four second springs (910) are provided around the steel ball (99) between the rear connecting block (97) and the front connecting block (96).

4. The EGR cooler flatness detection mechanism according to claim 3, characterized in that: The rear end of the mounting seat (91) is provided with four connection terminals (94), and the four connection terminals (94) are respectively connected to the four probes (102) one by one and are used to transmit the detection data of the probes (102).

5. The EGR cooler flatness detection mechanism according to claim 3, characterized in that: The top of the mounting seat (91) is equipped with a protective shell (95).

6. The EGR cooler flatness detection mechanism according to claim 1, characterized in that: It also includes a rotary pressing cylinder (6) for cooperating with the mold base (3) and the positioning pin (5) to press and fix the cooler.

7. The EGR cooler flatness detection mechanism according to claim 1, characterized in that: It also includes a code scanner (11), the installation height of the code scanner (11) corresponds to the cooler, and is used to identify product information of the current cooler.

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