A hydraulic lock testing device

Abstract

This utility model discloses a hydraulic lock testing device, including a base, a hydraulic lock fixedly mounted on the base, and a test shaft, an oil injection line, and a sensing unit installed on the base. The test shaft is used to drive the latch on the hydraulic lock to rotate. The oil injection line can cooperate with the oil injection port of the hydraulic cylinder on the hydraulic lock to unlock the hydraulic lock. The sensing unit is connected to the sensor of the hydraulic lock to determine whether the hydraulic lock can work normally. This testing device can test whether the hydraulic lock functions normally, and whether the hydraulic lock operates normally after the cylinder is started, triggering a switch operation feedback signal.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing, and in particular to a hydraulic lock testing device. Background Technology

[0002] As a key safety component in automotive hydraulic systems, the hydraulic lock's core function is to lock and unlock the actuator by controlling the opening and closing of the hydraulic cylinder's oil circuit. Whether the cylinder's movement accurately triggers the feedback switch and transmits signals to the driver's cabin directly affects vehicle operational safety and the reliability of status monitoring. In automotive production, assembly, and after-sales maintenance, this linkage function needs to be verified through specialized testing: simulating cylinder activation, whether the hydraulic lock can trigger the switch action according to preset logic to ensure the driver's cabin can receive status signals in real time, such as door locking and suspension adjustment, preventing driver misjudgment of the operating status due to signal failure.

[0003] A hydraulic lock structure is available, as shown in Figure 1. By supplying hydraulic oil to the hydraulic lock, the cylinder is driven to move, causing the cylinder to move the lock body in conjunction, thereby triggering a feedback switch to send an electrical signal and transmit it to the cockpit, so as to realize real-time monitoring of the locking status.

[0004] After the hydraulic lock is manufactured and assembled, its overall performance needs to be tested to ensure the product's pass rate. The main test is whether the switch can be triggered to provide feedback when the cylinder is started. Therefore, a tooling that can complete the hydraulic lock test needs to be designed. Utility Model Content

[0005] This invention addresses the need in the prior art to provide a hydraulic lock testing device for testing the performance of hydraulic locks by verifying whether a feedback signal is triggered when the hydraulic cylinder is started.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hydraulic lock testing device, comprising a base, characterized in that: the hydraulic lock is fixedly mounted on the base, and a test shaft, an oil injection line, and a sensing unit are mounted on the base; the test shaft is used to drive the latch on the hydraulic lock to rotate; the oil injection line can cooperate with the oil injection port of the hydraulic cylinder on the hydraulic lock to unlock the hydraulic lock; the sensing unit is connected to the sensor interface of the hydraulic lock to determine whether the hydraulic lock can work normally.

[0007] In the above scheme, preferably, the sensing unit includes a plug-in part and a display unit, the plug-in part is movably disposed on the base, and the plug-in part is electrically connected to the display unit.

[0008] In the above scheme, preferably, a support plate is fixedly installed on the base, and the support plate is provided with an installation groove that matches the shape of the hydraulic lock.

[0009] In the above scheme, preferably, the support plate is provided with a sliding groove, and the test shaft can move along the sliding groove.

[0010] In the above scheme, preferably, a positioning shaft is installed on the support plate, and the positioning shaft cooperates with the positioning hole on the hydraulic lock.

[0011] In the above scheme, preferably, a vertical plate is provided on the base, and a drive push rod is provided on the vertical plate.

[0012] In the above scheme, preferably, a fixing plate is installed on the test shaft, and the drive push rod is fixedly connected to the fixing plate.

[0013] In the above scheme, preferably, the vertical plate is provided with a drive device for controlling the movement of the drive rod, and the drive device is one of an electric push rod, a pneumatic cylinder or a hydraulic cylinder.

[0014] In the above scheme, preferably, the support plate is provided with a storage groove for placing the oil injection pipeline.

[0015] In the above scheme, preferably, the display unit is a signal light or a buzzer, used to display whether the hydraulic lock is in an unlocked state through light or sound signals.

[0016] The beneficial effects of this utility model are: This utility model designs a hydraulic lock testing device, in which the hydraulic lock can be judged to operate normally by the feedback of the display unit during the testing process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the hydraulic lock of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the hydraulic lock testing device of this utility model.

[0019] Figure 3 This diagram shows the usage state of the hydraulic lock placed on the testing device according to this utility model.

[0020] In the diagram: 1-Base; 2-Oil injection line; 3-Sensing unit; 301-Plug-in part; 302-Display unit; 112-Positioning shaft; 101-Support plate; 5-Test shaft; 6-Hydraulic lock; 121-Drive device; 102-Vertical plate; 111-Sliding groove; 501-Fixing plate; 122-Drive push rod; 115-Mounting groove; 116-Placement groove; Sensor-601; Cylinder-602; Oil injection port-621; Piston rod-622; Positioning hole-603; First locking block-604; Second locking block-605; Contact-612; Interface-611. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-3 .

[0022] This embodiment provides a hydraulic lock testing device, which enables performance testing of hydraulic locks.

[0023] For details, see Figure 2 The testing device includes a base 1, on which a hydraulic lock 6 is fixedly mounted. A test shaft 5, an oil injection line 2, and a sensing unit 3 are mounted on the base 1. The oil injection line 2 can cooperate with the oil injection port 621 of the cylinder 602 on the hydraulic lock 6 to unlock the hydraulic lock. The sensing unit 3 includes a connector 301 and a display unit 302. The connector 301 is movably mounted on the base 1 and electrically connected to the display unit 302. The display unit 302 is a signal light or a buzzer, used to indicate whether the hydraulic lock 6 is unlocked via light or sound signals. In this embodiment, the display unit 302 is a signal light, and the unlocking of the hydraulic lock 6 is determined by whether the signal light is lit.

[0024] A support plate 101 is provided on the base 1. The support plate 101 has an installation groove 115 that matches the shape of the hydraulic lock 6. The hydraulic lock 6 can be stably placed on the base 1 by fitting into the installation groove 115. A positioning shaft 112 is installed on the support plate 101. The positioning shaft 112 cooperates with the positioning hole on the hydraulic lock 6 for positioning the hydraulic lock 6.

[0025] Specifically, the support plate 101 is also provided with a sliding groove 111, through which the test shaft 5 slides into the latch opening and closing area along its horizontal guide direction via the sliding groove 111.

[0026] The test shaft 5 is used to drive the second locking block 605 on the hydraulic lock 6 to rotate. In order to provide power to the test shaft 5, a vertical plate 102 is also fixedly installed on the base 1, and a drive push rod 122 is installed on the vertical plate 102. In this embodiment, the drive push rod 122 is moved by a drive device 121; the drive device 121 can be an electric push rod, a cylinder, or a hydraulic cylinder, and the push rod end of the drive device is fixedly connected to the drive push rod 122.

[0027] In this embodiment, a fixing plate 501 is fixedly installed on the test shaft 5. The fixing plate 501 is connected to the drive push rod 122, and the fixing plate 501 can slide and cooperate with the sliding groove 111 on the support plate 101. In addition, the bottom plane of the fixing plate 501 is parallel to the axis of the positioning shaft 112. The fixing plate 501 can stably clamp the test shaft 5 for movement, ensuring that the test shaft 5 is subjected to uniform force. When the hydraulic lock 6 is fixed on the base 1, the axis of the test shaft 5 is spatially parallel to the axis of the lock groove on the second lock block 605.

[0028] In addition, in order to facilitate the storage of the oil injection line 2 and the collection of oil that may leak during the test, a storage slot 116 for placing the oil injection line 2 is provided on the side of the support plate 101. The oil injection line 2 is preferably an oil injection gun, which can be connected to a hydraulic pump to realize the hydraulic drive of the oil cylinder 602.

[0029] The method using the hydraulic lock testing device described above:

[0030] The positioning shaft 112 is matched with the positioning hole 603 on the hydraulic lock 6, and the hydraulic lock 6 is matched with the mounting groove 115 on the support plate 101 that matches the shape of the hydraulic lock 6, so that the hydraulic lock 6 is stably placed on the placement platform 103.

[0031] After the hydraulic lock 6 is stably placed, the oil injection line 2 is inserted into the oil injection port 621 of the oil cylinder 602 in the hydraulic lock 6. After the insertion part 301 in the sensing unit 3 is engaged with the interface 611 of the sensor 601 on the hydraulic lock 6, the oil injection switch is triggered to start injecting oil into the oil cylinder 602. The piston rod 622 is subjected to oil pressure, which gives the first locking block 604 a push force, causing the first locking block 604 to rotate counterclockwise until the first locking block 604 contacts the contact 612 of the sensor 601. After the sensor 601 is turned on, it transmits the signal to the display unit 302. The display unit 302 displays a light signal or emits an sound signal. At the same time, the second locking block 605 rotates counterclockwise under the action of the torsion spring. After rotating to the largest angle, it stops. At this time, the hydraulic lock 6 is in the unlocked state.

[0032] The switch of the trigger drive device 121 is activated. The drive device 121 provides power to the test shaft 5 to move along the sliding groove 111 via the drive push rod 122. The test shaft 5 can slide into the locking area and push the second locking block 605 on the hydraulic lock 6 to rotate clockwise against the torsion spring. At the same time, the second locking block 605 pushes the first locking block 604 to rotate counterclockwise. The end of the second locking block 605 disengages from the first locking block 604 to the bottom. At this time, the oil injection stops, there is no oil pressure in the cylinder 601, the piston rod 612 has no pushing force, and the first locking block 604 rotates clockwise under the action of the torsion spring. After rotating to the limit position on the second locking block 605, it cannot rotate clockwise further due to the physical structural limiting resistance. At this time, the hydraulic lock 6 is in the locked state, and the display unit 302 does not display light or sound signals.

[0033] When the oil filling switch is triggered again to start oil filling, the hydraulic lock 6 repeats the movement during the first oil filling. The first locking block 604 triggers the sensor 601 in the hydraulic lock 6, and at the same time triggers the switch of the drive device 121, driving the test shaft 5 to be removed from the lock opening and closing area. At this time, the display unit 302 displays a light signal or emits an sound signal.

[0034] During the above test, the display unit 302 displays a light signal or emits a sound signal twice. If the display unit 302 does not emit a signal during the test, it indicates that there is a problem with the hydraulic lock 6 function.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hydraulic lock testing device, comprising a base (1), characterized in that: The hydraulic lock (6) is fixedly installed on the base (1), and the base (1) is equipped with a test shaft (5), an oil injection line (2) and a sensing unit (3); the test shaft (5) is used to drive the latch on the hydraulic lock (6) to rotate; the oil injection line (2) can cooperate with the oil injection port (621) of the oil cylinder (602) on the hydraulic lock (6) to unlock the hydraulic lock (6); the sensing unit (3) is connected to the sensor interface (601) of the hydraulic lock (6) to determine whether the hydraulic lock (6) can work normally.

2. The hydraulic lock testing device according to claim 1, characterized in that: The sensing unit (3) includes a plug-in part (301) and a display unit (302). The plug-in part (301) is movably disposed on the base (1) and is electrically connected to the display unit (302).

3. The hydraulic lock testing device according to claim 1, characterized in that: A support plate (101) is fixedly installed on the base (1), and the support plate (101) is provided with an installation groove (115) that is adapted to the shape of the hydraulic lock (6).

4. The hydraulic lock testing device according to claim 3, characterized in that: The support plate (101) is provided with a sliding groove (111), and the test shaft (5) can move along the sliding groove (111).

5. A hydraulic lock testing device according to claim 3, characterized in that: A positioning shaft (112) is installed on the support plate (101), and the positioning shaft (112) cooperates with the positioning hole (603) on the hydraulic lock (6).

6. The hydraulic lock testing device according to claim 1, characterized in that: A vertical plate (102) is provided on the base (1), and a drive push rod (122) is provided on the vertical plate (102).

7. A hydraulic lock testing device according to claim 6, characterized in that: A fixing plate (501) is installed on the test shaft (5), and the drive push rod (122) is fixedly connected to the fixing plate (501).

8. A hydraulic lock testing device according to claim 6, characterized in that: The vertical plate (102) is provided with a drive device (121) for controlling the movement of the drive push rod (122), and the drive device (121) is one of an electric push rod, a cylinder or a hydraulic cylinder.

9. A hydraulic lock testing device according to claim 3, characterized in that: The support plate (101) is provided with a storage slot (116) for placing the oil injection pipeline (2).

10. A hydraulic lock testing device according to claim 2, characterized in that: The display unit (302) is a signal light or a buzzer, used to display whether the hydraulic lock (6) is in an unlocked state through light or sound signals.

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