A Pu barbell plate hammering test machine and a Pu barbell plate detection method

Abstract

The invention relates to the technical field of product detection, and discloses a Pu barbell plate beating tester and a Pu barbell plate detection method, wherein the Pu barbell plate beating tester comprises a shell, a central axis is provided at the center of the shell, the central axis is connected to a hinge, a secondary axis is rotatably arranged at the center of the hinge; a plurality of cylinder bodies are evenly distributed in an annular array outside the central axis, a first cavity and a second cavity are provided inside the cylinder body, a first piston which is interference fit with the first cavity is provided inside the first cavity, the first piston is hinged to the hinge through a first connecting rod, and a beating block for beating the barbell plate is fixedly provided at the inner end of the first piston; the invention combines radial beating impact with heating aging in the process of detecting the Pu barbell plate, and the test result provides a stronger reference for predicting the situation of the barbell plate in the actual use process.

Description

Technical Field

[0001] The invention relates to the technical field of product detection, and more specifically, to a Pu barbell plate beating test machine and a Pu barbell plate detection method. Background Art

[0002] Barbell plates are subjected to radial impact forces due to being dropped during use. Therefore, the radial hammer test of barbell plates is an important item in the barbell plate inspection process. However, compared with pure cast iron barbell plates, the aging of the Pu layer of Pu barbell plates has a greater impact on the impact resistance of the barbell plates. The results obtained from a simple hammer test are quite different from the actual situation during the use of Pu barbell plates. Summary of the invention

[0003] The invention provides a Pu barbell plate beating test machine, which solves the technical problem in the related art that the result obtained by a simple beating test is quite different from the situation in the actual use process of the Pu barbell plate.

[0004] According to one aspect of the present invention, there is provided a Pu barbell plate hammer tester, comprising a housing, a central axis is provided at the center of the housing, the central axis is connected to a hinge, a secondary axis is provided at the center of the hinge for rotation, the secondary axis and the central axis are parallel to each other, and the vertical distance between the secondary axis and the central axis is greater than zero, and the secondary axis is fixedly connected to the central axis;

[0005] A plurality of cylinders are evenly distributed in an annular array outside the central axis, a first cavity and a second cavity are arranged inside the cylinder, a first piston with interference fit is arranged inside the first cavity, the first piston is hinged to the hinge through a first connecting rod, and a hammering block for hammering the barbell plate is fixedly arranged at the inner end of the first piston;

[0006] A first channel and a second channel are provided at the outer end of the first cavity, the first channel and the second channel are connected to the first cavity through a first valve port and a second valve port respectively, a first valve core and a second valve core are provided on the first valve port and the second valve port respectively, the first valve core and the second valve core are used to control the switch of the first valve port and the second valve port, and the first valve core and the second valve core can both move along the radial direction of the main shaft;

[0007] The cylinder body is provided with a first interface connected to the first channel and a second interface connected to the second channel;

[0008] The second cavity is provided with a second piston which is interference fit therewith, the inner end of the second piston is connected to the hammer block through a second connecting rod, the cylinder body inside the second cavity is provided with a first nozzle and a second nozzle, the second nozzle is connected to the space of the second cavity inside the second piston, the outer end of the cylinder body is also provided with a third interface and a fourth interface, one end of the third interface is connected to the cooling pipe, the other end of the third interface is connected to the space of the second cavity inside the second piston, one end of the fourth interface is connected to the first nozzle, and the other end of the fourth interface is connected to the second interface;

[0009] A second central axis coaxially arranged with the central axis is provided below the hinge, and the first turntable and the second turntable are fixedly connected on the second central axis. A first arc-shaped protrusion is provided on the outer edge of the first turntable, and the central angle corresponding to the first arc-shaped protrusion is α, α=360° / n, n is the number of cylinder bodies; the plane where the midpoint of the first arc-shaped protrusion and the axis of the central axis are located is the first plane, and the plane where the axis of the central axis and the axis of the secondary shaft are located is the second plane, and the angle between the first plane and the second plane is α; the central axis and / or the second central axis is connected to a rotating power source, and the rotating power source is used to drive the central axis and the second central axis to rotate synchronously.

[0010] A first push rod corresponding to the cylinder body is arranged on the outer side of the first rotating disk, one end of the first push rod is connected to one end of the first lever, the other end of the first lever is connected to the first valve core, and the middle part of the first lever is hinged to the cylinder body;

[0011] A second arc-shaped protrusion is provided on the outer edge of the second rotating disk, and the central angle corresponding to the second arc-shaped protrusion is β, β=1080° / n;

[0012] The plane where the end point of the first arc-shaped protrusion away from the second arc-shaped protrusion and the axis of the central axis are located is the third plane, the plane where the end point of the second arc-shaped protrusion close to the first arc-shaped protrusion and the axis of the central axis are located is the fourth plane, and the angle between the third plane and the fourth plane is α;

[0013] A second push rod corresponding to the cylinder body is arranged on the outer side of the second rotating disk, one end of the second push rod is connected to one end of the second lever, the other end of the second lever is connected to the second valve core, and the middle part of the second lever is hinged to the cylinder body.

[0014] Furthermore, the first turntable and the second turntable are both located in the turntable seat, and the turntable seat is provided with through holes corresponding to the first push rod and the second push rod one by one, and the first push rod and the second push rod are inserted into the turntable seat through the through holes.

[0015] Furthermore, the heating medium and the cooling medium are made of the same material.

[0016] Furthermore, ventilation holes are provided at the bottom and the top of the shell, and the ventilation holes are connected to the air outlet of the fan, so that the air flow inside the shell is promoted through the fan.

[0017] Furthermore, a one-way valve is provided on the third interface.

[0018] Furthermore, the barbell plate to be tested is sleeved on the central axis, and a central bearing is arranged between the barbell plate and the central axis.

[0019] Furthermore, the first valve core and the second valve core are both provided with a reset mechanism for resetting, and the reset mechanism can be a spring sleeved on the first valve core and the second valve core, one end of the spring on the first valve core is fixedly connected to the first valve core, and the other end is fixedly connected to the cylinder body, and one end of the spring on the second valve core is fixedly connected to the second valve core, and the other end is fixedly connected to the cylinder body.

[0020] According to one aspect of the present invention, a Pu barbell plate hammering test method is provided, comprising the following steps:

[0021] Step S1, putting the barbell plate on the central axis;

[0022] Step S2, adjusting the position of the barbell plate to be in the same plane as the hammering block;

[0023] Step S3, the central shaft rotates to drive the multiple hammering heads to hammer the barbell plates in sequence;

[0024] Step S4, after the set time is reached, observe whether there are cracks on the surface of the barbell plate whose depth and width exceed the set values. If so, it is judged that the barbell plate does not meet the standards; if not, it is judged that the barbell plate meets the standards.

[0025] The beneficial effects of the present invention are:

[0026] The present invention combines radial hammering impact with heating aging in the process of testing Pu barbell plates, and the test results provide a stronger reference for predicting the conditions of the barbell plates during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the Pu barbell plate hammering test machine of the present invention;

[0028] Figure 2 yes Figure 1 AA section view;

[0029] Figure 3 yes Figure 2 A magnified image of point A;

[0030] Figure 4 yes Figure 1 BB cross-sectional view;

[0031] Figure 5 yes Figure 1 CC section view;

[0032] Figure 6 yes Figure 5 A magnified view of point B;

[0033] Figure 7 The present invention Figure 1 DD cross-sectional view;

[0034] Figure 8 The present invention Figure 1 EE cross-sectional view;

[0035] Fig. 9 It is a flow chart of the Pu barbell plate detection method of the present invention.

[0036] In the figure: housing 100, barbell plate 200, central axis 101, hinge 102, secondary axis 103, cylinder body 104, first cavity 105, second cavity 106, first piston 107, hammering block 108, first channel 109, second channel 110, first valve port 111, second valve port 112, first valve core 113, second valve core 114, first interface 115, second interface 116, second piston 117, second connecting rod 118, first nozzle 119, second nozzle 120, third interface 121, fourth interface 122, second central axis 123, first turntable 124, second turntable 125, first arc-shaped protrusion 126, first push rod 127, second arc-shaped protrusion 128, second push rod 129, turntable seat 130, first connecting rod 131. DETAILED DESCRIPTION

[0037] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and is not a limitation of the scope of protection, applicability or examples set forth in the claims. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0038] Embodiment 1

[0039] like Figure 1-Figure 8 As shown, a Pu barbell plate hammer tester includes a housing 100, wherein a central axis 101 is provided at the center of the housing 100, the central axis 101 is connected to a hinge 102, a secondary axis 103 is rotatably provided at the center of the hinge 102, the secondary axis 103 and the axis of the central axis 101 are parallel to each other, and the vertical distance between the secondary axis 103 and the axis of the central axis 101 is greater than zero, and the secondary axis 103 is fixedly connected to the central axis 101;

[0040] A plurality of cylinder bodies 104 are evenly distributed in an annular array outside the central axis 101, and a first cavity 105 and a second cavity 106 are arranged inside the cylinder body 104. A first piston 107 with an interference fit is arranged inside the first cavity 105, and the first piston 107 is hinged to the hinge 102 through a first connecting rod 131. A hammering block 108 for hammering the barbell plate 200 is fixedly arranged at the inner end of the first piston 107;

[0041] The outer end of the first cavity 105 is provided with a first channel 109 and a second channel 110, the first channel 109 and the second channel 110 are connected to the first cavity 105 through a first valve port 111 and a second valve port 112 respectively, the first valve port 111 and the second valve port 112 are provided with a first valve core 113 and a second valve core 114 respectively, the first valve core 113 and the second valve core 114 are used to control the opening and closing of the first valve port 111 and the second valve port 112, and the first valve core 113 and the second valve core 114 can both move along the radial direction of the main shaft;

[0042] The cylinder body 104 is provided with a first interface 115 connected to the first channel 109 and a second interface 116 connected to the second channel 110;

[0043] The interior of the second cavity 106 is provided with a second piston 117 which is interference fit therewith, the inner end of the second piston 117 is connected to the hammer block 108 through a second connecting rod 118, and it can move synchronously with the hammer block 108, and the cylinder body 104 inside the second cavity 106 is provided with a first nozzle 119 and a second nozzle 120, the second nozzle 120 is connected to the space of the second cavity 106 inside the second piston 117, and the outer end of the cylinder body 104 is also provided with a third interface 121 and a fourth interface 122, one end of the third interface 121 is connected to the cooling pipe, and the other end of the third interface 121 is connected to the space of the second cavity 106 inside the second piston 117, one end of the fourth interface 122 is connected to the first nozzle 119, and the other end of the fourth interface 122 is connected to the second interface 116;

[0044] The barbell plate 200 is sleeved on the central shaft 101, and a central bearing is arranged between the barbell plate 200 and the central shaft 101. In order to facilitate the disassembly of the barbell plate 200, the central bearing may be sleeved on the central shaft 101, and a gasket may be filled between the central bearing and the barbell plate 200 to fix the barbell plate 200 and the central bearing.

[0045] A second central axis 123 coaxially arranged with the central axis 101 is provided below the articulator 102, and a first rotating disk 124 and a second rotating disk 125 are fixedly connected to the second central axis 123. A first arc-shaped protrusion 126 is provided on the outer edge of the first rotating disk 124, and the central angle corresponding to the first arc-shaped protrusion 126 is α, α=360° / n, and n is the number of cylinder bodies 104; the plane where the midpoint of the first arc-shaped protrusion 126 and the axis of the central axis 101 are located is the first plane, and the plane where the axis of the central axis 101 and the axis of the secondary axis 103 are located is the second plane, and the angle between the first plane and the second plane is α;

[0046] A first push rod 127 corresponding to the cylinder body 104 is disposed on the outer side of the first rotating disk 124. One end of the first push rod 127 is connected to one end of the first lever. The other end of the first lever is connected to the first valve core 113. The middle part of the first lever is hinged to the cylinder body 104.

[0047] A second arc-shaped protrusion 128 is provided on the outer edge of the second rotating disk 125, and the central angle corresponding to the second arc-shaped protrusion 128 is β, β=3*360° / n=1080° / n;

[0048] The plane where the end point of the first arc-shaped protrusion 126 away from the second arc-shaped protrusion 128 and the axis of the central axis are located is the third plane, and the plane where the end point of the second arc-shaped protrusion 128 close to the first arc-shaped protrusion 126 and the axis of the central axis are located is the fourth plane, and the angle between the third plane and the fourth plane is α;

[0049] A second push rod 129 corresponding to the cylinder body 104 is disposed on the outer side of the second rotating disk 125. One end of the second push rod 129 is connected to one end of the second lever. The other end of the second lever is connected to the second valve core 114. The middle part of the second lever is hinged to the cylinder body 104.

[0050] The purpose of the position and size setting of the first arc-shaped protrusion 126 and the second arc-shaped protrusion 128 is that the first piston 107 of the cylinder body 104 (A cylinder body 104) corresponding to the second plane is at the smallest distance from the central axis 101, that is, the hammering block 108 of the first piston 107 contacts the barbell plate 200, and the first channel 109 of the cylinder body 104 corresponding to the first piston 107 of the next (B cylinder body 104) that is about to hammer the barbell plate 200 is opened due to the first arc-shaped protrusion 126 triggering the first push rod 127, and the heating medium is sucked in due to the negative pressure inside;

[0051] The second arc-shaped protrusion 128 of the second turntable 125 triggers the second push rod 129 to open the second channel 110 of the cylinder body 104. After the first arc-shaped protrusion 126 disengages from the first push rod 127 of the B cylinder body 104, the second arc-shaped protrusion 128 rotates to a position where it contacts the second push rod 129 of the B cylinder body 104, so that the heating medium is squeezed and sprayed out from the first nozzle 119 to heat the barbell plate 200. This process continues until the piston of the B cylinder body 104 moves to the outer end and stops. The purpose is to prevent the heating medium from being sucked into the cylinder body 104 that strikes the barbell plate 200, to avoid raising the temperature of the position where the barbell plate 200 is struck, and to enable the cylinder body 104 to be emptied after the heating medium is sucked in, and to keep the surfaces of the barbell plates 200 that are not sprayed with the cooling medium from being heated by the heating medium.

[0052] In one embodiment of the present invention, the central shaft 101 and / or the second central shaft 123 are connected to a rotational power source, and the rotational power source is used to drive the central shaft 101 and the second central shaft 123 to rotate synchronously.

[0053] When only the central shaft 101 is connected to the rotational power source, the second central shaft 123 is fixedly connected to the secondary shaft 103 .

[0054] In one embodiment of the present invention, the first turntable 124 and the second turntable 125 are both located in the turntable seat 130, and the turntable seat 130 is provided with through holes corresponding to the first push rod 127 and the second push rod 129, and the first push rod 127 and the second push rod 129 are inserted into the turntable seat 130 through the through holes.

[0055] In one embodiment of the present invention, the heating medium and the cooling medium are made of the same material, for example, both may be water.

[0056] In one embodiment of the present invention, ventilation holes are provided at the bottom and the top of the housing 100, and the ventilation holes are connected to the air outlet of the fan, so that the fan promotes the air flow inside the housing 100 to avoid heat accumulation.

[0057] In one embodiment of the present invention, a plurality of outlets are provided at the bottom of the housing 100, and the outlets are used to discharge the heating medium and the cooling medium.

[0058] In one embodiment of the present invention, a one-way valve is provided on the third interface 121 .

[0059] In one embodiment of the present invention, a reset mechanism for resetting is provided on both the first valve core 113 and the second valve core 114. The reset mechanism may be a spring sleeved on the first valve core 113 and the second valve core 114. One end of the spring on the first valve core 113 is fixedly connected to the first valve core 113, and the other end is fixedly connected to the cylinder body 104. One end of the spring on the second valve core 114 is fixedly connected to the second valve core 114, and the other end is fixedly connected to the cylinder body 104.

[0060] like Fig. 9 As shown, based on the aforementioned Pu barbell plate 200 beating test machine, the present invention provides a Pu barbell plate 200 beating test method, comprising the following steps:

[0061] Step S1, sleeve the barbell plate 200 on the central axis 101;

[0062] Step S2, adjusting the position of the barbell plate 200 to be in the same plane as the hammering block 108;

[0063] Step S3, the central shaft 101 rotates to drive the multiple hammering heads to hammer the barbell plates 200 in sequence;

[0064] Step S4, after the set time is reached, observe whether there are cracks on the surface of the barbell plate 200 whose depth and width exceed the set values. If so, it is determined that the barbell plate 200 does not meet the standards. If not, it is determined that the barbell plate 200 meets the standards.

[0065] The embodiment of the present embodiment is described above in conjunction with the accompanying drawings, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present embodiment, ordinary technicians in this field can also make many forms without departing from the purpose of the present embodiment and the scope of protection of the claims, all of which are within the protection of the present embodiment.

Claims

1. A Pu barbell plate beating test machine, characterized in that: It comprises a shell, wherein a central axis is provided at the center of the shell, the central axis is connected to a hinge, a secondary axis is provided at the center of the hinge for rotation, the axes of the secondary axis and the central axis are parallel to each other, and the vertical distance between the axes of the secondary axis and the central axis is greater than zero, and the secondary axis is fixedly connected to the central axis; A plurality of cylinders are evenly distributed in an annular array outside the central axis, a first cavity and a second cavity are arranged inside the cylinder, a first piston with interference fit is arranged inside the first cavity, the first piston is hinged to the hinge through a first connecting rod, and a hammering block for hammering the barbell plate is fixedly arranged at the inner end of the first piston; A first channel and a second channel are provided at the outer end of the first cavity, the first channel and the second channel are connected to the first cavity through a first valve port and a second valve port respectively, a first valve core and a second valve core are provided on the first valve port and the second valve port respectively, the first valve core and the second valve core are used to control the switch of the first valve port and the second valve port, and the first valve core and the second valve core can both move along the radial direction of the main shaft; The cylinder body is provided with a first interface connected to the first channel and a second interface connected to the second channel; The second cavity is provided with a second piston which is interference fit therewith, the inner end of the second piston is connected to the hammer block through a second connecting rod, the cylinder body inside the second cavity is provided with a first nozzle and a second nozzle, the second nozzle is connected to the space of the second cavity inside the second piston, the outer end of the cylinder body is also provided with a third interface and a fourth interface, one end of the third interface is connected to the cooling pipe, the other end of the third interface is connected to the space of the second cavity inside the second piston, one end of the fourth interface is connected to the first nozzle, and the other end of the fourth interface is connected to the second interface; A second central axis coaxially arranged with the central axis is provided below the articulator, and the first rotating disk and the second rotating disk are fixedly connected on the second central axis. A first arc-shaped protrusion is provided on the outer edge of the first rotating disk, and the central angle corresponding to the first arc-shaped protrusion is α, α=360° / n, and n is the number of cylinder bodies; the plane where the midpoint of the first arc-shaped protrusion and the axis of the central axis are located is the first plane, and the plane where the axis of the central axis and the axis of the secondary shaft are located is the second plane, and the angle between the first plane and the second plane is α; A first push rod corresponding to the cylinder body is disposed on the outer side of the first rotating disk, one end of the first push rod is connected to one end of the first lever, the other end of the first lever is connected to the first valve core, and the middle part of the first lever is hinged to the cylinder body; A second arc-shaped protrusion is provided on the outer edge of the second rotating disk, and the central angle corresponding to the second arc-shaped protrusion is β, β=1080° / n; The plane where the end point of the first arc-shaped protrusion away from the second arc-shaped protrusion and the axis of the central axis are located is the third plane, the plane where the end point of the second arc-shaped protrusion close to the first arc-shaped protrusion and the axis of the central axis are located is the fourth plane, and the angle between the third plane and the fourth plane is α; A second push rod corresponding to the cylinder body is arranged on the outer side of the second rotating disk, one end of the second push rod is connected to one end of the second lever, the other end of the second lever is connected to the second valve core, and the middle part of the second lever is hinged to the cylinder body.

2. A Pu barbell plate beating tester according to claim 1, characterized in that: The central shaft and / or the second central shaft is connected to a rotational power source, and the rotational power source is used to drive the central shaft and the second central shaft to rotate synchronously.

3. A Pu barbell plate beating tester according to claim 1, characterized in that: The first turntable and the second turntable are both located in the turntable seat. The turntable seat is provided with through holes corresponding to the first push rod and the second push rod. The first push rod and the second push rod are inserted into the turntable seat through the through holes.

4. A Pu barbell plate hammering tester according to claim 1, characterized in that: The materials of the heating medium and the cooling medium are the same.

5. A Pu barbell plate beating tester according to claim 1, characterized in that: The bottom and the top of the shell are both provided with ventilation holes, which are connected to the air outlet of the fan, so that the air flow inside the shell is promoted through the fan.

6. A Pu barbell plate hammering tester according to claim 1, characterized in that: The third interface is provided with a one-way valve.

7. A Pu barbell plate beating tester according to any one of claims 1-6, characterized in that: A barbell plate is sleeved on the central axis, and a central bearing is arranged between the barbell plate and the central axis.

8. A Pu barbell plate hammering tester according to claim 1, characterized in that: The first valve core and the second valve core are both provided with springs, one end of the spring on the first valve core is fixedly connected to the first valve core, and the other end is fixedly connected to the cylinder body, and one end of the spring on the second valve core is fixedly connected to the second valve core, and the other end is fixedly connected to the cylinder body.

9. A Pu barbell plate beating test method, characterized in that: The following steps are performed by the Pu barbell plate hammer tester as described in any one of claims 1 to 8: Step S1, putting the barbell plate on the central axis; Step S2, adjusting the position of the barbell plate to be in the same plane as the hammering block; Step S3, the central shaft rotates to drive the multiple hammering heads to hammer the barbell plates in sequence; Step S4, after the set time is reached, observe whether there are cracks on the surface of the barbell plate whose depth and width exceed the set values. If so, it is judged that the barbell plate does not meet the standards; if not, it is judged that the barbell plate meets the standards.

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