Piston pin hardness detection device

Abstract

The utility model discloses a piston pin hardness detection device, which relates to the technical field of hardness detection devices and comprises a detection machine table, a detection pressure head is arranged at the top of the detection machine table, a supporting column is arranged below the detection pressure head and fixedly connected to the detection machine table, a T-shaped through groove is formed in the top end of the supporting column, and a piston pin is arranged in the T-shaped through groove. A T-shaped through groove is formed in the upper surface of the piston pin, a sliding plate is slidably connected into the T-shaped through groove, a supporting frame is fixedly connected to the sliding plate, a limiting ring is fixedly connected to one end of the upper surface of the supporting frame and used for positioning the piston pin during axial direction detection, and a V-shaped frame is fixedly connected to the other end of the upper surface of the supporting frame. According to the piston pin hardness detection device, by arranging the supporting frame, the limiting ring, the V-shaped frame and other structures, the piston pin can be detected in the axial direction and the radial direction, the detection comprehensiveness is improved, meanwhile, detection stations can be rapidly switched, and the use efficiency of the piston pin hardness detection device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hardness detection device, especially to a piston pin hardness detection device. BACKGROUND

[0002] Piston pin is a cylindrical pin installed on the skirt of the piston, the middle part of which passes through the small head hole of the connecting rod to connect the piston and the connecting rod, and transmit the gas force borne by the piston to the connecting rod. It is usually made of high-quality alloy steel and hollow, and the hardness of the piston pin needs to be detected before use.

[0003] The patent with the name of "an engine piston pin hardness detection device (patent application number: CN202120516196.5)" discloses an engine piston pin hardness detection device, which can adjust the fixed position of the piston pin, so that the multiple positions of the piston pin can be detected, and the detection accuracy is improved. The device can quickly fix the piston pin of different lengths, and improve the convenience of use, but the device can only be used for axial positioning detection of the piston pin, and the use efficiency needs to be improved.

[0004] Therefore, it is necessary to provide a piston pin hardness detection device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a piston pin hardness detection device to solve the problem that it can only be used for axial positioning detection of the piston pin, and the use efficiency needs to be improved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a piston pin hardness detection device, which comprises a detection machine table, a detection pressure head is arranged on the top of the detection machine table, a supporting column is arranged below the detection pressure head, the supporting column is fixedly connected to the detection machine table, a T-shaped through slot is formed in the top end of the supporting column, a sliding plate is slidably connected in the T-shaped through slot, a supporting frame is fixedly connected to the sliding plate, one end of the upper surface of the supporting frame is fixedly connected with a limiting ring for positioning when the piston pin is detected in the axial direction, and the other end of the upper surface of the supporting frame is fixedly connected with a V-shaped frame for positioning when the piston pin is detected in the radial direction.

[0007] Preferably, a first electromagnet is embedded in the upper surface of the supporting frame, and the limiting ring surrounds the outside of the first electromagnet.

[0008] Preferably, a sliding channel is formed in the two side inclined walls of the V-shaped frame, and a clamping block is slidably arranged in the sliding channel.

[0009] Preferably, a sliding groove is formed in the inner wall of the sliding channel, a sliding block is slidably arranged in the sliding groove, and the sliding block is fixedly connected to the corresponding clamping block.

[0010] Preferably, the bottom of the card block is fixedly connected with a magnetic block, the bottom end of the sliding channel is fixedly connected with a second electromagnet, and the second electromagnet cooperates with the magnetic block.

[0011] Preferably, the top end of the supporting column is threadedly connected with a threaded sleeve, and the threaded sleeve is extruded with the sliding plate.

[0012] Preferably, the outer wall of the threaded sleeve is fixedly connected with anti-skid protrusions, and the anti-skid protrusions are arranged in multiple numbers and uniformly distributed around the outer wall of the threaded sleeve.

[0013] The technical effects and advantages of the present utility model are as follows:

[0014] 1. The supporting frame, the limiting ring and the V-shaped frame are arranged, so that the piston pin can be detected in axial direction and radial direction, the comprehensiveness of detection is improved, the detection station can be quickly switched, and the use efficiency of the piston pin hardness detection device is improved.

[0015] 2. The V-shaped frame can be applied to piston pins with different sizes, and the second electromagnet cooperates with the magnetic block to complete the positioning of the piston pin.

[0016] 3. After the supporting frame moves to the top end of the supporting column, the threaded sleeve is rotated to move towards the supporting frame, the threaded sleeve extrudes the sliding plate, the supporting frame is positioned, and the stability of the hardness detection is improved. DRAWINGS

[0017] Figure 1 It is a structural schematic view of the piston pin hardness detection device.

[0018] Figure 2 It is a structural schematic view of the piston pin hardness detection device. Figure 1 It is an enlarged schematic view of the structure at A in the present utility model.

[0019] Figure 3 It is a structural schematic view of the threaded sleeve and the T-shaped through slot.

[0020] Figure 4 It is a structural schematic view of the supporting frame and the sliding plate.

[0021] Figure 5 It is a structural schematic view of the supporting column and the limiting ring.

[0022] Figure 6 It is an enlarged schematic view of the structure at B in the present utility model. Figure 5

[0023] ​In the figure: 1, detection machine; 2, support column; 3, support frame; 4, limit ring; 5, first electromagnet; 6, V-shaped frame; 7, sliding channel; 8, clamping block; 9, sliding groove; 10, sliding block; 11, second electromagnet; 12, magnetic block; 13, T-shaped slot; 14, sliding plate; 15, threaded sleeve; 16, detection pressure head. DETAILED DESCRIPTION

[0024] The utility model provides a kind of piston pin hardness detection device as Figures 1-6 As shown in the figure, a piston pin hardness detection device is provided, including detection machine 1, the top of detection machine 1 is provided with detection pressure head 16, the inside of detection machine 1 is provided with driving equipment (not shown in the figure) that drives detection pressure head 16 to lift, driving equipment includes electric push rod and the like structure, and pressure gauge and the like are further provided, and extrusion force is monitored.

[0025] In order to realize the detection of piston pin in axial direction and radial direction, improve the comprehensiveness of detection, support column 2 is arranged below detection pressure head 16, support column 2 is fixedly connected on detection machine 1, T-shaped slot 13 is opened in the top end of support column 2, sliding plate 14 is slidably connected in the inside of T-shaped slot 13, support frame 3 is fixedly connected on sliding plate 14, support frame 3 can move in the top end of support column 2 through the cooperation of T-shaped slot 13 and sliding plate 14, so as to switch detection station.

[0026] One end of the upper surface of support frame 3 is fixedly connected with limit ring 4, which is used for positioning the piston pin during axial direction detection, the upper surface of support frame 3 is fixedly embedded with first electromagnet 5, and limit ring 4 surrounds the outside of first electromagnet 5.

[0027] Specifically, when the axial direction detection of the piston pin is needed, the operator controls the support frame 3 to move in the top end of the support column 2, so that the limit ring 4 corresponds to the position of the detection pressure head 16 up and down, then the piston pin is put into the inside of the limit ring 4 along its axial direction, and the first electromagnet 5 is started to adsorb and fix the piston pin, and then the detection pressure head 16 moves downward to test the piston pin.

[0028] In addition, adjusting clamp and the like can also be arranged on the limit ring 4, including clamping plate and the like structure, which can further improve the stability of the positioning of the piston pin, the adjusting clamp is a common technology, and will not be described here, which can be adjusted according to specific use.

[0029] At the same time, the limit ring 4 can also be arranged to be relatively high in height and surround the outside of the piston pin, so as to avoid the phenomenon of piston pin bursting and splashing during later detection.

[0030] The other end of the upper surface of the support frame 3 is fixedly connected with a V-shaped frame 6, which is used for positioning the piston pin when the radial direction detection is performed. The piston pin is placed in the V-shaped frame 6, and the outer wall surface of the piston pin abuts against the inner walls of the two sides of the V-shaped frame 6. The two side inclined walls of the V-shaped frame 6 are each provided with a sliding channel 7, and the sliding channel 7 is slidably provided with a clamping block 8.

[0031] The bottom of the clamping block 8 is fixedly connected with a magnetic block 12, and the bottom end of the sliding channel 7 is fixedly connected with a second electromagnet 11. The second electromagnet 11 cooperates with the magnetic block 12.

[0032] Specifically, when the radial direction detection of the piston pin is needed, the operator controls the support frame 3 to move at the top end of the support column 2, so that the V-shaped frame 6 corresponds to the position of the detection pressure head 16 in up and down direction. The second electromagnet 11 on the two sides is started, so that the magnetic property of the mutually close side of the second electromagnet 11 and the corresponding magnetic block 12 is the same. Under the action of the repulsive force, the clamping block 8 slides upward in the sliding channel 7, so as to facilitate the piston pin to be placed in the V-shaped frame 6. Then, the magnetic property of the mutually close side of the second electromagnet 11 and the corresponding magnetic block 12 is changed to be different. Under the action of the attractive force, the clamping block 8 slides downward in the sliding channel 7, and the clamping block 8 abuts against the outer wall of the piston pin, so as to complete the positioning of the piston pin. Then, the detection pressure head 16 moves downward to perform the extrusion test on the piston pin.

[0033] The V-shaped frame 6 can be applied to piston pins of different sizes, and the second electromagnet 11 cooperates with the magnetic block 12 and other structures to complete the positioning of the piston pin.

[0034] Through the structures such as the support frame 3, the limiting ring 4 and the V-shaped frame 6, the axial direction and the radial direction of the piston pin can be detected, the comprehensiveness of the detection is improved, the detection station can be quickly switched, and the use efficiency of the piston pin hardness detection device is improved.

[0035] In order to improve the stability of the clamping block 8 sliding in the sliding channel 7, a sliding groove 9 is formed in the inner wall of the sliding channel 7, and a sliding block 10 is slidably arranged in the sliding groove 9. The sliding block 10 is fixedly connected to the corresponding clamping block 8.

[0036] The top end of the support column 2 is threadedly connected with a threaded sleeve 15, the threaded sleeve 15 is extruded and matched with the sliding plate 14, the outer wall of the threaded sleeve 15 is fixedly connected with anti-skid protrusions, and the anti-skid protrusions are arranged in multiple, and the multiple anti-skid protrusions are uniformly distributed around the outer wall of the threaded sleeve 15. The anti-skid protrusions are arranged to facilitate the operator to rotate the threaded sleeve 15. When the movement of the support frame 3 at the top end of the support column 2 is completed, the threaded sleeve 15 is rotated to move towards the support frame 3, the threaded sleeve 15 extrudes the sliding plate 14, so as to position the support frame 3, and improve the stability of the hardness detection.

Claims

1. A piston pin hardness testing device comprising a testing machine (1), characterized in that: The top of the detection machine (1) is provided with a detection pressure head (16), and the lower portion of the detection pressure head (16) is provided with a support column (2), and the support column (2) is fixedly connected to the detection machine (1), and the top end of the support column (2) is provided with a T-shaped through slot (13), and the T-shaped through slot (13) is slidably connected with a sliding plate (14), and the sliding plate (14) is fixedly connected with a support frame (3), and one end of the upper surface of the support frame (3) is fixedly connected with a limiting ring (4), and the limiting ring (4) is used for positioning the piston pin in the axial direction detection, and the other end of the upper surface of the support frame (3) is fixedly connected with a V-shaped frame (6), and the V-shaped frame (6) is used for positioning the piston pin in the radial direction detection.

2. A piston pin hardness detection device according to claim 1, characterized in that: The upper surface of the support frame (3) is fixedly embedded with a first electromagnet (5), and the limiting ring (4) surrounds the outside of the first electromagnet (5).

3. A piston pin hardness detection device according to claim 1, characterized in that: The two side inclined walls of the V-shaped frame (6) are provided with sliding channels (7), and the sliding channels (7) are slidably provided with clamping blocks (8).

4. A piston pin hardness detection device according to claim 3, characterized in that: The inner wall of the sliding channel (7) is provided with a sliding groove (9), and the sliding groove (9) is slidably provided with a sliding block (10), and the sliding block (10) is fixedly connected to the corresponding clamping block (8).

5. A piston pin hardness detection device according to claim 3, wherein: The bottom of the clamping block (8) is fixedly connected with a magnetic block (12), and the bottom end of the sliding channel (7) is fixedly connected with a second electromagnet (11), and the second electromagnet (11) cooperates with the magnetic block (12).

6. A piston pin hardness detection device according to claim 1, characterized in that: The top end of the support column (2) is threadedly connected with a threaded sleeve (15), and the threaded sleeve (15) is extrudedly connected with the sliding plate (14).

7. A piston pin hardness detection device according to claim 6, wherein: The outer wall of the threaded sleeve (15) is fixedly connected with anti-skid protrusions, and the anti-skid protrusions are arranged in multiple, and the multiple anti-skid protrusions are uniformly distributed around the outer wall of the threaded sleeve (15).

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