Sealing performance detection device of engine valve chamber cover

Abstract

The utility model relates to a sealing performance detection device for an engine valve chamber cover, which comprises a detection table and a controller, a detection cavity is arranged in the middle of the detection table, the detection cavity is provided with a detection station and a driving cylinder, the detection station is provided with a downwardly recessed gas injection cavity, the gas injection cavity is provided with a support plane, and the inner wall of the gas injection cavity is provided with gas injection holes. The bottom of the telescopic push rod is connected with a lifting table, the bottom face of the lifting table is connected with a pressing rod, the bottom of the pressing rod is connected with a pressing head, the top face of the pressing head is provided with an inserting block, and the bottom face of the pressing rod and the bottom face of the pressing head are each provided with a round hole matched with the inserting block. After a worker replaces the valve chamber cover on the detection station, the driving air cylinder and the air pump can be immediately started, the pressing rod presses the valve chamber cover downwards to form a sealed cavity, the air pressure borne in the real use state is simulated for detection, the detection efficiency is higher, precise equipment such as a scanner is not needed, and the use and maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection device technical field, especially, relate to a kind of sealing property detection device of engine valve chamber cover. BACKGROUND

[0002] Valve chamber cover is the sealing member of the uppermost part of engine, located above cylinder head, corresponding to oil pan, together to seal engine lubricating oil, ensure that engine does not leak to outside when running, therefore, the sealing performance of valve chamber cover needs to be detected whether it meets the standard.Patent No. "CN202411067773.1" discloses a kind of automobile valve chamber cover sealing performance test method and equipment, needs to scan and collect the physical information of valve chamber cover, constructs three-dimensional model to analyze defect, this method not only equipment use, maintenance cost is higher, also not conducive to detecting each valve chamber cover when large-scale production, sealing performance test efficiency is low.Therefore, design a kind of sealing property detection device of engine valve chamber cover capable of reducing equipment cost and improving detection efficiency becomes the technical problem that urgently needs to be solved. UTILITARIAN CONTENT

[0003] The utility model provides a kind of sealing property detection device of engine valve chamber cover to solve the above-mentioned problem.

[0004] The technical scheme of the utility model, a kind of sealing property detection device of engine valve chamber cover, including detection table and controller, the middle part of detection table is equipped with detection cavity, the bottom surface of detection cavity is equipped with detection station, top is connected with the drive cylinder located above detection station, detection station is equipped with the gas injection cavity and support plane downwards recessed, the inner wall of gas injection cavity is equipped with gas injection hole, gas injection hole is connected with air pump, drive cylinder is connected with the telescopic push rod that projects downwards, the bottom of telescopic push rod is connected with lifting platform, the bottom surface of lifting platform is connected with pressure rod, the bottom of pressure rod is connected with pressure head, the top surface of pressure head is equipped with plug, plug is the vertical plug-in cylinder of axis, the bottom surface of pressure rod and pressure head is equipped with the round hole matched with plug;Pressure rod and pressure head are plastic column, the position of support plane and pressure rod corresponds with the edge and aperture of valve chamber cover, controller is electrically connected with air pump, drive cylinder.

[0005] After the above structure, the worker places the valve chamber cover on the detection station, the outer side of the valve chamber cover faces upward, the sealing rubber strip at the edge and the opening of the valve chamber cover is pressed on the supporting plane, the controller is operated to start the driving cylinder, the driving cylinder drives the telescopic push rod to extend downward, the lifting platform and the pressing rod are pushed down, the pressing rod is pressed down to make the valve chamber cover closely contact with the supporting plane, the state that the valve chamber cover is locked by the bolt when actually used is simulated, at this time, the valve chamber cover is buckled on the detection station to seal the air injection cavity, air is pumped into the air injection cavity by starting the air pump, and the air pressure in the cavity is fed back to the controller for the worker to read to judge whether the sealing performance detection of the valve chamber cover is qualified; after the detection is finished, the air pump discharges the air in the air injection cavity to restore the normal air pressure, the driving cylinder drives the telescopic push rod to drive the lifting platform to reset; the plug is inserted into the round hole, the corresponding pressing head can be connected below the pressing rod for extension, different numbers of pressing heads can also be connected below the pressing head by this method to change the extension length of the pressing rod, and the height of the pressing rod is matched with valve chamber covers of different specifications; the driving cylinder and the air pump can be started immediately after the worker replaces the valve chamber cover on the detection station to simulate the air pressure borne by the valve chamber cover in the actual use state for detection, the detection efficiency is higher, and precise equipment such as a scanner is not needed, so that the use and maintenance cost is lower.

[0006] As a further improvement of the utility model, the inner side wall of the round hole is provided with an annular groove along the circumferential surface, and the side surface of the plug is provided with a plurality of clamping blocks, which are symmetrically arranged along the circumferential direction of the plug, and the position and size of the clamping blocks correspond to the annular groove, and the upper and lower edges of the clamping blocks are further provided with a circular arc surface formed by chamfering, and the inner wall of the annular groove and the surface of the clamping block are both covered with a hard plastic layer.

[0007] After the above structure, when the plug is inserted into the round hole, the clamping blocks are elastically deformed by extruding the inner side wall of the round hole, and after the plug is completely inserted into the round hole, the clamping blocks are clamped in the annular groove by passing over the inner side wall of the round hole, preventing the pressing head from falling off due to its own weight during the lifting process; the upper and lower edges of the clamping blocks are provided with a circular arc surface, which guides the lateral movement of the clamping blocks to prevent the clamping blocks from being stuck when extruding in and out of the annular groove; the inner wall of the annular groove and the surface of the clamping block are covered with a hard plastic layer, which emits a sound when the clamping blocks enter and exit the annular groove, so that the worker knows whether the pressing head is inserted in place.

[0008] As a further improvement of the utility model, the lower edge of the plug is provided with a guide slope formed by chamfering.

[0009] After the above structure, the lower edge of the plug is provided with a guide slope formed by chamfering, which makes the plug easier to align and insert into the round hole.

[0010] As a further improvement of the utility model, the bottom surface of the lifting platform is provided with a reinforcing rib inserted into the center line of the pressing rod.

[0011] With the above structure, the reinforcing rib inserted into the center line of the pressing rod is arranged on the bottom surface of the lifting platform, thereby improving the structural strength of the pressing rod and preventing the pressing rod from being bent and deformed during long-term operation.

[0012] As a further improvement of the utility model, the controller is provided with a timer and a display screen, and the air injection cavity is provided with an air pressure sensor.

[0013] With the above structure, the air pressure sensor is arranged in the air injection cavity, and the air pressure value in the cavity is detected in real time during the process that the air pump pumps air into the air injection cavity, and the air pressure value and the detection time are displayed on the display screen by sending the electric signal to the controller. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 The utility model structure schematic diagram is shown.

[0015] Fig. 2 The pressing rod and the pressing head cross section structure schematic diagram is shown.

[0016] Fig. 3 The A part insert block structure schematic diagram is shown.

[0017] 1-detection platform, 2-controller, 3-detection cavity, 4-detection station, 5-driving cylinder, 6-air injection cavity, 7-supporting plane, 8-air injection hole, 9-telescopic push rod, 10-lifting platform, 11-pressing rod, 12-pressing head, 13-insert block, 14-round hole, 15-annular groove, 16-clamping block, 17-circular arc surface, 18-guiding inclined surface, 19-reinforcing rib, 20-display screen. DETAILED DESCRIPTION

[0018] As Figs. 1-3The utility model provides a kind of sealing detection device of engine valve chamber cover, including detection table 1 and controller 2, the middle part of detection table 1 is equipped with detection cavity 3, the bottom surface of detection cavity 3 is equipped with detection station 4, top is connected with the drive cylinder 5 located above detection station 4, detection station 4 is equipped with the gas injection cavity 6 of downward recess and support plane 7, the inner wall of gas injection cavity 6 is equipped with gas injection hole 8, gas injection hole 8 is connected with air pump, drive cylinder 5 is connected with the telescopic push rod 9 of downward stretch, the bottom of telescopic push rod 9 is connected with lifting platform 10, the bottom surface of lifting platform 10 is connected with pressure rod 11, the bottom of pressure rod 11 is connected with pressure head 12, the top surface of pressure head 12 is equipped with plug 13, plug 13 is axis vertical plug-in cylinder, the bottom surface of pressure rod 11 and pressure head 12 is equipped with circular hole 14 matched with plug 13;Pressure rod 11 and pressure head 12 are plastic column, the position of support plane 7 and pressure rod 11 corresponds with the edge and aperture of valve chamber cover, controller 2 is electrically connected with air pump, drive cylinder 5.

[0019] by worker, the outside of valve chamber cover is upwards, the sealing rubber strip at the edge and aperture of valve chamber cover is pressed on support plane 7, then controller 2 is operated to start drive cylinder 5, drive cylinder 5 drives telescopic push rod 9 to stretch downward, pushes down lifting platform 10 and pressure rod 11, pressure rod 11 is pressed down to make valve chamber cover and support plane 7 closely adhere, simulates the state of being locked by bolt when valve chamber cover is used actually, at this time, valve chamber cover is buckled on detection station 4 to seal gas injection cavity 6, air is pumped into gas injection cavity 6 by starting air pump, and the air pressure in cavity is fed back to controller 2 for worker to read, to judge whether the sealing detection of valve chamber cover is qualified or not;After detection, air pump removes air in gas injection cavity 6 to restore normal air pressure, drive cylinder 5 drives telescopic push rod 9 to drive lifting platform 10 to reset;Plug 13 is inserted into circular hole 14, corresponding pressure head 12 can be connected below pressure rod 11 to extend, and different numbers of pressure head 12 can be connected below pressure head 12 by this method, to change the extension length of pressure rod 11, and match with the height of valve chamber cover of different specifications;After valve chamber cover is replaced on detection station 4 by worker, drive cylinder 5 and air pump can be started immediately to simulate the air pressure borne by valve chamber cover in actual use state to detect, the detection efficiency is higher, and there is no need for precise equipment such as scanner, the use and maintenance cost is lower.

[0020] The inner side wall of circular hole 14 is equipped with annular groove 15 along circumferential surface, the side of plug 13 is equipped with a plurality of clamping blocks 16, clamping blocks 16 are centrally symmetrically arranged along the circumferential direction of plug 13, and the position and size correspond to annular groove 15, the upper and lower edges of clamping block 16 are further equipped with circular surface 17 formed by chamfering, and the surface of annular groove 15 and clamping block 16 is covered with hard plastic layer.

[0021] When the plug 13 is inserted into the round hole 14, the clamping block 16 is elastically deformed by extruding the inner side wall of the round hole 14, and after the plug 13 is completely inserted into the round hole 14, the clamping block 16 is clamped into the annular groove 15 by passing over the inner side wall of the round hole 14, thereby preventing the pressure head 12 from falling off due to gravity during the lifting process of the pressure rod 11; the upper and lower edges of the clamping block 16 are provided with a circular arc surface 17, which guides the lateral movement of the clamping block 16 and avoids the clamping block 16 from being stuck when extruding in and out of the annular groove 15; the inner wall of the annular groove 15 and the surface of the clamping block 16 are covered with a hard plastic layer, which emits a sound when the clamping block 16 enters and exits the annular groove 15, so that the worker knows whether the pressure head 12 is inserted in place.

[0022] The lower edge of the plug 13 is provided with a guide slope 18 formed by chamfering.

[0023] The guide slope 18 formed by chamfering on the lower edge of the plug 13 makes the plug 13 more easily aligned and inserted into the round hole 14.

[0024] The bottom surface of the lifting platform 10 is provided with a reinforcing rib 19 inserted into the center line of the pressure rod 11.

[0025] The reinforcing rib 19 inserted into the center line of the pressure rod 11 on the bottom surface of the lifting platform 10 improves the structural strength of the pressure rod 11, so that the pressure rod 11 is not easily bent and deformed during long-term operation.

[0026] The controller 2 is provided with a timer and a display screen 20, and the air injection cavity 6 is provided with an air pressure sensor, and the timer, the display screen 20 and the air pressure sensor are electrically connected to the controller 2.

[0027] The air pressure sensor installed in the air injection cavity 6 detects the air pressure value in the cavity 3 in real time during the process of the air pump pumping air into the air injection cavity 6, and sends the air pressure value to the controller 2 through an electric signal, and the controller 2 displays the air pressure value and the detection time on the display screen 20, sets the detection time by using the timer, and automatically ends the detection and starts the air pump exhaust and the lifting platform 10 reset when the detection time reaches the detection time.

Claims

1. An engine deck seal inspection device, characterized by: The utility model relates to a detection device for valve cover, including detection stage (1) and controller (2), the middle part of detection stage (1) is equipped with detection cavity (3), the bottom of detection cavity (3) is equipped with detection station (4), the top is connected with the drive cylinder (5) located above detection station (4), and the detection station (4) is equipped with the gas injection cavity (6) that is concave downwards and the support plane (7), the inner wall of gas injection cavity (6) is equipped with gas injection hole (8), and the gas injection hole (8) is connected with air pump, and the drive cylinder (5) is connected with the telescopic push rod (9) that stretches out downward, and the bottom of telescopic push rod (9) is connected with lifting platform (10), and the bottom of lifting platform (10) is connected with pressure rod (11), and the bottom of pressure rod (11) is connected with pressure head (12), and the top of pressure head (12) is equipped with plug (13), and plug (13) is the vertical plug-in cylinder of axis, and the bottom of pressure rod (11) and pressure head (12) are all equipped with round hole (14) matched with plug (13);Pressure rod (11) and pressure head (12) are all plastic columns, and the position of support plane (7) and pressure rod (11) corresponds with the edge of valve chamber cover and aperture, and controller (2) is electrically connected with air pump, drive cylinder (5).

2. The apparatus according to claim 1, wherein: The inner side wall of round hole (14) is equipped with annular groove (15) along the circumference, the side of plug (13) is equipped with a plurality of clamping blocks (16), the clamping blocks (16) are symmetrically arranged along the circumferential direction center of plug (13), and the position and size correspond with annular groove (15), the upper and lower edges of clamping block (16) are further equipped with arc surface (17) formed by chamfering, and the inner wall of annular groove (15) and the surface of clamping block (16) are all covered with hard plastic layer.

3. The apparatus according to claim 1, wherein: The lower edge of plug (13) is equipped with guide inclined plane (18) formed by chamfering.

4. The apparatus according to claim 1, wherein: The bottom of lifting platform (10) is equipped with reinforcing rib (19) inserted into the center line of pressure rod (11).

5. The apparatus of claim 1 wherein: the housing is formed of a material that is transparent to infrared radiation; and the infrared radiation source is positioned to direct infrared radiation through the housing and toward the valve cover. Controller (2) is installed with timer and display screen (20), and air pressure sensor is installed in gas injection cavity (6), and timer, display screen (20), air pressure sensor and controller (2) are electrically connected. ​

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