Ejection force test tool

Abstract

The utility model belongs to the technical field of rivet ejection force detection, and particularly relates to an ejection force testing tool which comprises a base, the top of the base is fixedly connected with a controller, the top of the base is provided with a testing mechanism, the testing mechanism comprises a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected with a lifting rod. The top of the lifting rod is fixedly connected with a pressure sensor, the outer side of the pressure sensor is fixedly connected with a signal line, the outer side of the hydraulic cylinder is fixedly connected with a displayer, a moving mechanism is arranged in the base and comprises a motor, and the output end of the motor is fixedly connected with a lead screw. The outer side of the lead screw is in threaded connection with a ferrule, the top of the ferrule is fixedly connected with a connecting rod, a sliding groove is formed in the base, and the rivet ejection force testing device has the advantage that the rivet ejection force can be conveniently and rapidly tested.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rivet ejection force detection, and particularly relates to a rivet ejection force testing tool. BACKGROUND

[0002] Rivets are widely used in the field of aviation standard parts, and are mainly used for single-sided connection of aircraft skin and other composite materials. The rivets used in the aviation field are mostly core-pulling rivets, and the structure of the core-pulling rivets is much more complex than that of general fasteners, and is usually assembled from combined parts such as a rivet body and a core rod. Therefore, the product must be tested for multiple mechanical indicators, and the core rod ejection force is one of them. The ejection force refers to the axial pressure applied to the riveted core head to slowly eject the core head from the inside of the rivet body.

[0003] Meanwhile, the application number CN211504484U "rivet core rod ejection force detection tool" measures the pressure of the pressure detection device, that is, the ejection force of the rivet, so it does not need to be replaced. The tool can test the ejection force of different rivets by replacing the rivet.

[0004] The above technical solution is relatively complex in use, so it is more troublesome to eject the rivet inside the test plate, which affects the test progress of the ejection force. Content of the utility model

[0005] The application aims at the shortcomings of the prior art, adopts the mode of setting a lifting rod on the base in cooperation with a sensor and a display, and designs a rivet ejection force testing tool, so that the ejection force of the rivet can be tested.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme:

[0007] A rivet ejection force testing tool, comprising a base, a controller fixedly connected to the top of the base, and a testing mechanism arranged on the top of the base.

[0008] The testing mechanism comprises a hydraulic cylinder, a lifting rod fixedly connected to the output end of the hydraulic cylinder, a pressure sensor fixedly connected to the top of the lifting rod, a signal line fixedly connected to the outer side of the pressure sensor, and a display fixedly connected to the outer side of the hydraulic cylinder.

[0009] Preferably, the inside of the base is provided with a moving mechanism, the moving mechanism comprises a motor, the output end of the motor is fixedly connected with a lead screw, the outer side of the lead screw is threadedly connected with a sleeve ring, the top of the sleeve ring is fixedly connected with a connecting rod, the inside of the base is provided with a sliding slot, the outer side of the hydraulic cylinder is fixedly connected with a connecting plate, the outer side of the connecting plate is fixedly connected with a threaded tube, the inside of the threaded tube is threadedly connected with a screw rod, and the outer side of the screw rod is fixedly connected with a positioning cover.

[0010] Preferably, the pressure sensor is movably connected to the top of the base through a lifting rod, and the signal line is fixedly connected to the inside of the display away from the pressure sensor.

[0011] Preferably, the motor is fixedly connected to the outside of the base, and the lead screw is rotatably connected to the inside of the base.

[0012] Preferably, the connecting rod is slidably connected to the inside of the sliding slot, and the top of the connecting rod is fixedly connected to the bottom of the hydraulic cylinder.

[0013] Preferably, the connecting plate is symmetrically arranged on the outside of the hydraulic cylinder, and the positioning cover is movably connected to the outside of the base through the screw rod.

[0014] Compared with the prior art, the application has the following advantages:

[0015] 1、The base is arranged, when the rivet inside the test plate needs to be ejected for force detection, first, the hydraulic cylinder and the pressure sensor at the top thereof are moved below the rivet inside the test plate, at this time, the controller is used to start the hydraulic cylinder, so that the hydraulic cylinder drives the lifting rod to move upwards, the movement of the lifting rod drives the pressure sensor to move, at this time, the pressure sensor can eject the rivet inside the test plate, and the force used for ejection is displayed in the display through the cooperation of the pressure sensor and the signal line, so that the convenient and fast effect is achieved.

[0016] 2、The base is arranged, when the rivet at different positions needs to be ejected for force testing, the controller is used to start the motor, so that the motor drives the lead screw to rotate, the rotation of the lead screw drives the sleeve ring to rotate, when the lead screw rotates, the sleeve ring can move on the outside of the lead screw, and the top of the connecting rod is fixedly connected to the bottom of the hydraulic cylinder, so that the connecting rod can drive the hydraulic cylinder to move on the top of the base, so that the rivet at different positions can be ejected for force testing. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the application;

[0018] Figure 2It is a structure schematic diagram between the screw rod and the hydraulic cylinder in the application;

[0019] Figure 3 It is a structure schematic diagram of the testing mechanism in the application;

[0020] Figure 4 It is Figure 2 An enlarged view of the structure at A in the application.

[0021] Wherein: 1, base; 2, controller; 3, testing mechanism; 31, hydraulic cylinder; 32, lifting rod; 33, pressure sensor; 34, signal line; 35, display; 4, moving mechanism; 41, motor; 42, screw rod; 43, sleeve ring; 44, connecting rod; 45, sliding groove; 46, adapter plate; 47, threaded tube; 48, screw rod; 49, positioning cover. DETAILED DESCRIPTION

[0022] As Figures 1-4 shown, a ejection force testing tool, comprising a base 1, the top of the base 1 is fixedly connected with a controller 2, the top of the base 1 is provided with a testing mechanism 3;

[0023] The testing mechanism 3 comprises a hydraulic cylinder 31, the output end of the hydraulic cylinder 31 is fixedly connected with a lifting rod 32, the top of the lifting rod 32 is fixedly connected with a pressure sensor 33, the outer side of the pressure sensor 33 is fixedly connected with a signal line 34, the outer side of the hydraulic cylinder 31 is fixedly connected with a display 35.

[0024] As a preferred mode, the pressure sensor 33 is movably connected to the top of the base 1 through the lifting rod 32, and the end of the signal line 34 away from the pressure sensor 33 is fixedly connected to the inside of the display 35.

[0025] As Figures 1-4 shown, the pressure sensor 33 used is a MEAS pressure sensing device, which can display and process the pressure value detected by it in the display 35 through cooperation with the signal line 34.

[0026] As a preferred mode, the inside of the base 1 is provided with a moving mechanism 4, the moving mechanism 4 comprises a motor 41, the output end of the motor 41 is fixedly connected with a screw rod 42, the outer side of the screw rod 42 is threadedly connected with a sleeve ring 43, the top of the sleeve ring 43 is fixedly connected with a connecting rod 44, the inside of the base 1 is provided with a sliding groove 45, the outer side of the hydraulic cylinder 31 is fixedly connected with an adapter plate 46, the outer side of the adapter plate 46 is fixedly connected with a threaded tube 47, the inside of the threaded tube 47 is threadedly connected with a screw rod 48, the outer side of the screw rod 48 is fixedly connected with a positioning cover 49.

[0027] As Figures 1-4As shown, the motor 41 is fixedly connected to the outside of the base 1, the screw rod 42 is rotatably connected to the inside of the base 1, and the controller 2 is electrically connected to the motor 41. Therefore, the motor 41 can be started by the controller 2, so that the motor 41 drives the screw rod 42 to rotate in the inside of the base 1.

[0028] As a preferred mode, the connecting rod 44 is slidably connected in the inside of the sliding groove 45, and the top of the connecting rod 44 is fixedly connected to the bottom of the hydraulic cylinder 31. Since the connecting rod 44 is slidably connected in the inside of the sliding groove 45, the sleeve ring 43 outside the screw rod 42 can be limited.

[0029] As shown, Figures 1 to 4 The connecting plate 46 is symmetrically distributed on the outside of the hydraulic cylinder 31, and the positioning cover 49 is movably connected to the outside of the base 1 through the screw rod 48.

[0030] Specifically, the screw rod 48 moves in the inside of the threaded pipe 47 by rotating, so that the screw rod 48 drives the positioning cover 49 to move to the outside of the base 1, which can improve the stability of the hydraulic cylinder 31 on the top of the base 1.

[0031] When it is necessary to detect the ejection force of the rivet inside the test plate, the hydraulic cylinder 31 and the pressure sensor 33 on the top thereof are first moved below the rivet inside the test plate. At this time, the hydraulic cylinder 31 is started by the controller 2, so that the hydraulic cylinder 31 drives the lifting rod 32 to move upward, and the pressure sensor 33 is moved by the movement of the lifting rod 32. At this time, the pressure sensor 33 can eject the rivet inside the test plate, and the force used for the ejection is displayed on the display 35 through the cooperation of the pressure sensor 33 and the signal line 34, which achieves the effect of convenience and speed. When it is necessary to test the ejection force of the rivet at different positions, the motor 41 is started by the controller 2, so that the motor 41 drives the screw rod 42 to rotate, and the sleeve ring 43 is rotated by the rotation of the screw rod 42. Since the connecting rod 44 is fixedly connected to the top of the sleeve ring 43 and slidably connected in the inside of the sliding groove 45, the sleeve ring 43 can move outside the screw rod 42 when the screw rod 42 rotates. The top of the connecting rod 44 is fixedly connected to the bottom of the hydraulic cylinder 31, so that the connecting rod 44 can drive the hydraulic cylinder 31 to move on the top of the base 1. When it is moved below the specified rivet, the screw rod 48 is rotated in the inside of the threaded pipe 47 by rotating, so that the screw rod 48 drives the positioning cover 49 to move to the outside of the base 1, thereby improving the stability of the hydraulic cylinder 31, which achieves the effect of testing the ejection force of the rivet at different positions.

Claims

1. An ejection force testing tool comprising a base (1), characterized in that: The top of the base (1) is fixedly connected with a controller (2), and the top of the base (1) is provided with a test mechanism (3); The test mechanism (3) comprises a hydraulic cylinder (31), the output end of the hydraulic cylinder (31) is fixedly connected with a lifting rod (32), the top of the lifting rod (32) is fixedly connected with a pressure sensor (33), the outer side of the pressure sensor (33) is fixedly connected with a signal line (34), and the outer side of the hydraulic cylinder (31) is fixedly connected with a display (35).

2. The ejection force testing tool of claim 1, wherein: The inside of the base (1) is provided with a moving mechanism (4), the moving mechanism (4) comprises a motor (41), the output end of the motor (41) is fixedly connected with a lead screw (42), the outer side of the lead screw (42) is threadedly connected with a thimble (43), the top of the thimble (43) is fixedly connected with a connecting rod (44), the inside of the base (1) is provided with a sliding groove (45), the outer side of the hydraulic cylinder (31) is fixedly connected with an adapter plate (46), the outer side of the adapter plate (46) is fixedly connected with a threaded tube (47), the inside of the threaded tube (47) is threadedly connected with a screw rod (48), and the outer side of the screw rod (48) is fixedly connected with a positioning cover (49).

3. The ejection force testing tool of claim 1, wherein: The pressure sensor (33) is movably connected to the top of the base (1) through the lifting rod (32), and the signal line (34) is fixedly connected to the inside of the display (35) away from the pressure sensor (33).

4. The ejection force testing tool of claim 2, wherein: The motor (41) is fixedly connected to the outer side of the base (1), and the lead screw (42) is rotatably connected to the inside of the base (1).

5. The ejection force testing tool of claim 2, wherein: The connecting rod (44) is slidably connected in the inside of the sliding groove (45), and the top of the connecting rod (44) is fixedly connected to the bottom of the hydraulic cylinder (31).

6. The ejection force testing tool of claim 2, wherein: The adapter plate (46) is symmetrically distributed on the outer side of the hydraulic cylinder (31), and the positioning cover (49) is movably connected to the outer side of the base (1) through the screw rod (48).

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