Durability experiment clamp

Abstract

The utility model provides a durability experiment clamp, and belongs to the technical field of machinery. The durability test fixture solves the problem of how to improve the universality of the durability test fixture on the premise of ensuring the test precision. The durability experiment clamp comprises a mounting base and further comprises a mounting frame, the mounting base is detachably connected to the mounting frame, a first mounting groove is formed in the mounting base, a second mounting groove located under the first mounting groove is formed in the mounting base, and the second mounting groove is located under the second mounting groove. The durability experiment clamp further comprises a first positioning plate provided with a valve rod installation groove, a second positioning plate provided with a valve switch installation groove and a first positioning rod with the top provided with an adapter clamping block, and the first positioning plate or the second positioning plate can be detachably connected into the first installation groove. And the positioning rod I is detachably connected in the second mounting groove. According to the durability experiment clamp, the universality of the durability experiment clamp can be improved on the premise that the experiment precision is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a durability test fixture. Background Technique

[0002] At present, for the production and manufacturing of various valve switches, valve stems, adapter seats and other components in the gas field, after mass production, corresponding durability tests generally need to be carried out. Before the test, workers need to fix them on a bench vice to ensure the positioning stability of the components, and then ensure the accuracy of the subsequent test results.

[0003] However, as the experiment progresses, workers will find during the operation that the clamping of the bench vice can only be adapted to components with a flat side wall. For components with an irregular side wall, due to insufficient contact surfaces, the clamping stability of the components cannot be fully guaranteed, and the components are very likely to slip and deflect, which is not conducive to the accuracy of the test results. Secondly, due to the overly concentrated clamping stress of the bench vice, there may also be a situation where the side wall of the component is clamped and damaged. Summary of the Invention

[0004] The purpose of the utility model is to provide a durability test fixture in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is: how to improve the versatility of the durability test fixture on the premise of ensuring the test accuracy.

[0005] The purpose of the utility model can be achieved by the following technical solutions: a durability test fixture includes a mounting base. The durability test fixture further includes a mounting frame. The mounting base is detachably connected to the mounting frame. A first mounting groove is provided on the mounting base. A second mounting groove located directly below the first mounting groove is provided in the mounting base. The durability test fixture further includes a first positioning plate provided with a valve stem mounting groove, a second positioning plate provided with a valve switch mounting groove, and a first positioning rod having an adapter seat clamping block at the top. The first positioning plate or the second positioning plate can be detachably connected to the first mounting groove, and the first positioning rod is detachably connected to the second mounting groove.

[0006] This durability test fixture specifically includes a mounting frame, a mounting base, a first positioning plate with a valve stem mounting groove, a second positioning plate with a valve switch mounting groove, and a first positioning rod with an adapter block at the top. Briefly speaking, this durability test fixture can load the first positioning plate, the second positioning plate, or the first positioning rod through the mounting base, and effectively support the mounting base through the mounting frame, so that the mounting base cooperates with the first positioning plate, the second positioning plate, or the first positioning rod to assemble the valve stem, the valve switch, or the adapter block. While ensuring the installation stability of the valve stem, the valve switch, or the adapter block, it can ensure that this durability test fixture can be adapted to different components for detection experiments. Specifically, a first mounting groove is provided on the mounting base. Before the experiment, for components such as valve switches or valve stems, workers can install the first positioning plate into the first mounting groove according to the corresponding components and lock it to the mounting base through fasteners. Users can insert the valve stem into the valve stem mounting groove to conduct experimental tests on the valve stem, or install the second mounting plate into the second mounting groove and lock it to the mounting base through fasteners. Users can insert the valve switch into the valve switch mounting groove to conduct experimental tests on the valve switch, or when both the first positioning plate and the second positioning plate are in a disassembled state, insert the first positioning rod into the second mounting groove and socket the adapter block on the adapter block on the first positioning rod. Thus, stable positioning of different components such as valve switches, valve stems, and adapter blocks can be achieved, and while avoiding scratching them and ensuring the accuracy of experimental data, the versatility of this durability test fixture is guaranteed.

[0007] In the above-mentioned durability test fixture, this durability test fixture further includes a second positioning rod with an extension rod mounting groove. The mounting frame includes a horizontally arranged top plate and a bottom plate. A relief opening is provided on the top plate. The second positioning rod is detachably connected to the bottom plate and is located directly below the relief opening. The mounting base is detachably connected to the top plate and is located directly above the relief opening. On the basis of the above solution, the mounting base is specifically detachably connected to the top plate of the mounting frame, and the top plate stably supports the mounting base. On the basis of this structure, the bottom plate in the mounting frame can also be used as a support platform for the extension rod experiment. Specifically, on the premise of detaching the mounting base from the top plate, workers can detachably connect the second positioning rod with the extension rod mounting groove to the bottom plate, so that the extension rod passes through the relief opening and is inserted into the extension rod mounting groove, thereby realizing the durability experiment of extension rod-like components, and further ensuring the versatility of this durability test fixture.

[0008] In the above durability test fixture, the cross-sections of the positioning plate 1 and the positioning plate 2 cut along the horizontal direction are both rectangular, the first installation slot is a rectangular slot, and the side walls of the positioning plate 1 and the positioning plate 2 can fit with the side walls of the first installation slot. When installing the positioning plate 1 or the positioning plate 2, the side walls of the first installation slot can be used to limit the side outer walls of the positioning plate 1 or the positioning plate 2, thereby ensuring the pre-installation stability of the positioning plate 1 or the positioning plate 2, and then facilitating the subsequent screwing and locking of the positioning plate 1 or the positioning plate 2 by fasteners.

[0009] In the above durability test fixture, the lower end of the positioning rod has a plurality of planar fitting surfaces along the circumferential direction, and the plurality of fitting surfaces are fitted with the groove wall of the second installation groove. Thus, after the positioning rod is inserted into the second installation groove, the plurality of fitting surfaces are fitted with the groove wall of the second installation groove in a fitting manner, thereby ensuring the circumferential positioning of the positioning rod.

[0010] In the above durability test fixture, the lower end of the second positioning rod has a polygonal connection portion, the bottom plate is provided with a connection groove, the connection portion is embedded in the connection groove and the outer peripheral wall is in contact with the inner peripheral wall of the connection groove. This ensures the connection stability between the second positioning rod and the bottom plate, and as a further solution, screws can be installed on the lower side of the bottom plate, the screws pass through the bottom plate and are screwed to the lower end of the second positioning rod, so as to ensure a more reliable connection between the second positioning rod.

[0011] In the above-mentioned durability test fixture, a vertically arranged channel and a third installation slot arranged around the lower end of the channel are sequentially opened in the installation seat below the second installation slot, a push rod is passed through the channel, an upper annular plate whose outer peripheral wall fits the inner peripheral wall of the second installation slot is detachably connected in the second installation slot, a lower annular plate whose outer peripheral wall fits the inner peripheral wall of the third installation slot is detachably connected in the third installation slot, and the push rod is sequentially passed through the upper annular plate, the lower annular plate and the clearance opening and is vertically limited. In the process of durability testing of valve stems and valve switches, after completing the test, workers can push the push rod by hand to move the push rod from bottom to top. In this process, the upwardly moved push rod can push out the valve stem positioned in the first positioning plate or the ball valve switch positioned in the second positioning plate, thereby ensuring the convenience of component disassembly.

[0012] In the above-mentioned durability test fixture, the ejector rod is T-shaped, a limiting groove is formed at the top of the upper annular plate, the outer peripheral wall of the ejector rod is in contact with the inner peripheral walls of the upper annular plate and the lower annular plate, and the ejector rod is embedded and limited in the limiting groove. Specifically, the ejector rod is vertically limited by the cooperation between the outer peripheral wall of its top and the inner peripheral wall of the limiting groove on the upper side plate of the positioning plate one, so as to prevent the ejector rod from falling. At the same time, the outer peripheral wall of the ejector rod is in contact with the inner peripheral walls of the upper annular plate and the lower annular plate, thus preventing the ejector rod from shaking in the circumferential direction.

[0013] In the above-mentioned durability test fixture, two fixing blocks arranged oppositely in the horizontal direction are detachably connected to the top plate. The opposite sides of the two fixing blocks are provided with protruding clamping parts. Clamping grooves are formed on the outer walls of both sides of the mounting seat. The two fixing blocks press the mounting seat on the top plate by embedding the clamping parts into the clamping grooves. Through this setting, the mounting seat is pressed on the top plate by the cooperation between the clamping parts on the two fixing blocks and the clamping grooves on both sides of the mounting seat, thereby ensuring the connection reliability of the mounting seat.

[0014] In the above-mentioned durability test fixture, the mounting frame further includes a plurality of vertical plates. The plurality of vertical plates are arranged at intervals along the circumference of the top plate and the bottom plate. The upper ends of the vertical plates are screwed and locked with the top plate by screws, and the lower ends are screwed and locked with the bottom plate by screws. This ensures the stable connection between the top plate and the bottom plate and the structural firmness of the mounting frame.

[0015] Compared with the prior art, the present durability test fixture has the following advantages:

[0016] 1. The positioning plate one for clamping the valve stem or the positioning plate two for clamping the valve switch is assembled through the first installation groove formed in the mounting seat, the positioning rod one for clamping the adapter seat is assembled through the second installation groove formed in the mounting seat, and the positioning rod two for clamping the extension rod is assembled through the bottom plate in the mounting frame. This ensures that the fixture can be applied to the durability tests of different components with higher versatility while ensuring accurate test data during the durability tests of each component.

[0017] 2. The ejector rod is accommodated through the channel formed in the mounting seat, and the upper annular plate and the lower annular plate limit the axial and circumferential directions of the ejector rod. During the detection of the valve stem and the valve switch, the component can be ejected by the ejector rod after the detection is completed.

[0018] 3. Two oppositely arranged fixing blocks are screwed and locked with the top plate of the mounting frame by fasteners, and the mounting seat is pressed on the top plate by the cooperation between the clamping parts and the clamping grooves on the outer wall of the mounting seat, ensuring the connection reliability of the top plate. Description of the Drawings

[0019] Figure 1It is a schematic structural diagram of the first embodiment.

[0020] Figure 2 It is a sectional view of the first embodiment and its partial enlarged view.

[0021] Figure 3 It is a schematic structural diagram of the mounting base in the first embodiment.

[0022] Figure 4 It is a sectional view of the mounting base in the first embodiment.

[0023] Figure 5 It is a schematic structural diagram of the fixing block in the first embodiment.

[0024] Figure 6 It is a schematic structural diagram of the mounting bracket in the first embodiment.

[0025] Figure 7 It is a schematic structural diagram of the first positioning plate in the first embodiment.

[0026] Figure 8 It is a schematic structural diagram of the upper annular plate in the first embodiment.

[0027] Figure 9 It is a schematic structural diagram of the ejector rod in the first embodiment.

[0028] Figure 10 It is a schematic structural diagram of the second embodiment.

[0029] Figure 11 It is a schematic structural diagram of the second positioning plate in the second embodiment.

[0030] Figure 12 It is a schematic structural diagram of the third embodiment.

[0031] Figure 13 It is a sectional view of the third embodiment.

[0032] Figure 14 It is a schematic structural diagram of the first positioning rod in the third embodiment.

[0033] Figure 15 It is a schematic structural diagram of the fourth embodiment.

[0034] Figure 16 It is a schematic structural diagram of the second positioning rod in the fourth embodiment.

[0035] In the figure, 1 is the mounting base; 11 is the first mounting groove; 12 is the second mounting groove; 121 is the upper annular plate; 1211 is the limiting groove; 13 is the channel; 131 is the ejector rod; 14 is the third mounting groove; 141 is the lower annular plate; 15 is the clamping groove;

[0036] 2 is the first positioning plate; 21 is the valve rod mounting groove;

[0037] 3. Second positioning plate; 31. Valve switch installation groove

[0038] 4. First positioning rod; 41. Adapter block

[0039] 5. Second positioning rod; 51. Extension rod installation groove; 52. Connection part

[0040] 6. Mounting bracket; 61. Top plate; 611. Relief opening; 612. Fixed block; 6121. Clamping part; 62. Bottom plate; 63. Vertical plate Detailed implementation mode

[0041] The following are specific embodiments of the present utility model and in combination with the accompanying drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0042] Embodiment 1

[0043] As Figure 1-2 shown, this durability test fixture includes a square-shaped mounting base 1 and a mounting bracket 6 located below the mounting base 1. Combining Figure 6 , the mounting bracket 6 specifically includes a top plate 61, a bottom plate 62 and several vertical plates 63. The top plate 61 and the bottom plate 62 are both horizontally arranged, and the top plate 61 is located directly above the bottom plate 62. Several vertical plates 63 are arranged around the top plate 61 and the bottom plate 62, and the upper end of each vertical plate 63 is screwed and locked with the outer side wall of the top plate 61 through screws, and the lower end is screwed and locked with the outer side wall of the bottom plate 62 through screws. Combining Figure 3 with Figure 5 , the mounting base 1 is located on the upper side plate surface of the top plate 61. On the top plate 61 and on both sides of the mounting base 1, there are provided strip-shaped fixed blocks 612. Both fixed blocks 612 are horizontally arranged, and on the opposite side of the two fixed blocks 612 along the length direction, there is a clamping part 6121. On both side walls of the mounting base 1, there are horizontally opened card slots 15, and the corresponding clamping parts 6121 are clamped in the card slots 15, so that the mounting base 1 is pressed on the upper side plate surface of the top plate 61 by the cooperation of the block and the top plate 61 with screws.

[0044] Combining Figure 4 with Figure 7 , on the top of the mounting base 1, there is a rectangular first installation groove 11. This durability test fixture also includes a rectangular plate-shaped first positioning plate 2. On the first positioning plate 2, there is a valve rod installation groove 21 penetrating through both side plates. The first positioning plate 2 is embedded in the first installation groove 11 so that its two outer side walls are in contact with the two inner side walls of the first installation groove 11, and subsequently, the first positioning plate 2 is screwed and locked to the top of the mounting base 1 through four screws. Combining Figure 8 with Figure 9, a second installation groove 12, a vertically arranged channel 13, and a third installation groove 14 located at the bottom of the mounting base 1 are sequentially formed below the first installation groove 11 in the mounting base 1. The upper end of the channel 13 communicates with the second installation groove 12, and the lower end communicates with the third installation groove 14. A relief opening 611 located directly below the third installation groove 14 is formed at the center of the top plate 61. An upper annular plate 121 that is square and has a central opening is embedded in the second installation groove 12, and the upper annular plate 121 is screwed and locked to the mounting base 1 by screws. A lower annular plate 141 that is square and has a central opening is embedded in the third installation groove 14, and the lower annular plate 141 is screwed and locked to the mounting base 1 by screws. A limiting groove 1211 is formed at the middle of the upper side plate surface of the upper annular plate 121. A push rod 131 is inserted through the channel 13. The push rod 131 is specifically T-shaped, its upper end is embedded in the limiting groove 1211, and its lower end sequentially passes through the upper annular plate 121, the channel 13, the lower annular plate 141, and the relief opening 611 and extends into the mounting bracket 6.

[0045] Working principle: When a worker conducts a durability test on the valve stem, first install the push rod 131 in the mounting base 1, then assemble the first positioning plate 2 into the first installation groove 11, and then install the valve stem in the valve stem installation groove 21 formed on the first positioning plate 2 to conduct the durability test. After the test is completed, the worker can push the push rod 131 from bottom to top, and the valve stem is pushed by the push rod 131 to push the valve stem out of the valve stem installation groove 21.

[0046] Embodiment 2

[0047] This embodiment is basically the same as that of Embodiment 1, and the difference lies only in that: as Figure 10-11 shown, this durability test fixture further includes a second positioning plate 3 with a rectangular cross-section cut along the transverse direction. A valve switch installation groove 31 for clamping the valve switch is formed on the second positioning plate 3. That is to say, when conducting a durability test on the valve switch, the worker can remove the first positioning plate 2 from the first installation groove 11 and then replace it with the second positioning plate 3 and install it in the first installation groove 11.

[0048] Embodiment 3

[0049] This embodiment is basically the same as that of Embodiment 1 and Embodiment 2, and the difference lies only in that: as Figure 12-14As shown in the figure, the durability test fixture further includes a first positioning rod 4 which is cylindrical and vertically arranged. The upper end of the first positioning rod 4 has an adapter block 41, and the lower end is circumferentially provided with four flat fitting surfaces 42. The lower end of the second positioning rod 5 is embedded in the second installation groove 12, and the four fitting surfaces 42 are made to fit with the inner peripheral wall of the second installation groove 12. Before conducting the durability test on the adapter, the user can choose to first remove the ejector rod 131, then assemble the second positioning rod 5, and then sleeved the adapter on the adapter block 41 at the upper end of the second positioning rod 5.

[0050] Embodiment 4

[0051] This embodiment is basically the same as Embodiment 1, Embodiment 2, and Embodiment 3, and the difference lies only in that: as Figure 15-16 shown in the figure, the durability test fixture further includes a second positioning rod 5 which is cylindrical and vertically arranged. The upper end of the second positioning rod 5 is provided with an extension rod installation groove 51 for clamping the extension rod, and the lower end has a quadrilateral connecting portion 52. A quadrilateral connecting groove 621 is provided at the center of the bottom plate 62 of the mounting frame 6. The lower end of the second positioning rod 5 is embedded and positioned in the connecting groove 621 through the connecting portion 52. When conducting the durability test on the extension rod, the user needs to remove the two fixing blocks 612 and the mounting seat 1 from the mounting frame 6, so that the relief opening 611 on the top plate 61 is exposed. At this time, the worker can insert the extension rod into the mounting frame 6 through the relief opening 611 and embed it in the extension rod installation groove 51 at the upper end of the second positioning rod 5, so that the extension rod is positioned.

[0052] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0053] Although terms such as mounting seat 1, first installation groove 11, second installation groove 12, upper annular plate 121, limit groove 1211, channel 13, ejector rod 131, third installation groove 14, lower annular plate 141, card slot 15, first positioning plate 2, valve rod installation groove 21, second positioning plate 3, valve switch installation groove 31, first positioning rod 4, adapter block 41, second positioning rod 5, extension rod installation groove 51, connecting portion 52, mounting frame 6, top plate 61, relief opening 611, fixing block 612, clamping portion 6121, bottom plate 62, vertical plate 63, etc. are used more in this article, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A durability test fixture, comprising a mounting seat (1), characterized in that: The durability test fixture also includes a mounting frame (6), the mounting seat (1) is detachably connected to the mounting frame (6), a first mounting groove (11) is provided on the mounting seat (1), a second mounting groove (12) is provided in the mounting seat (1) and is located directly below the first mounting groove (11), the durability test fixture also includes a positioning plate (2) with a valve stem mounting groove (21), a positioning plate (3) with a valve switch mounting groove (31), and a positioning rod (4) with an adapter block (41) on the top, the positioning plate (2) or the positioning plate (3) can be detachably connected to the first mounting groove (11), and the positioning rod (4) can be detachably connected to the second mounting groove (12).

2. The durability test fixture according to claim 1, characterized in that: The durability test fixture also includes a second positioning rod (5) provided with an extension rod installation groove (51); the installation frame (6) includes a top plate (61) and a bottom plate (62) arranged horizontally; the top plate (61) is provided with a clearance opening (611); the second positioning rod (5) is detachably connected to the bottom plate (62) and is located directly below the clearance opening (611); and the installation seat (1) is detachably connected to the top plate (61) and is located directly above the clearance opening (611).

3. The durability test fixture according to claim 1 or 2, characterized in that: The cross-sections of the positioning plate 1 (2) and the positioning plate 2 (3) cut along the horizontal direction are both rectangular, the first installation groove (11) is a rectangular groove, and the side walls of the positioning plate 1 (2) and the positioning plate 2 (3) can fit with the side groove walls of the first installation groove (11).

4. The durability test fixture according to claim 1 or 2, characterized in that: The lower end of the positioning rod (4) has a plurality of planar fitting surfaces (42) along the circumferential direction, and the plurality of fitting surfaces (42) are all fitted with the groove wall of the second installation groove (12).

5. The durability test fixture according to claim 2, characterized in that: The lower end of the second positioning rod (5) has a polygonal connecting portion (52), and the bottom plate (62) is provided with a connecting groove (621). The connecting portion (52) is embedded in the connecting groove (621) and the outer peripheral wall is in contact with the inner peripheral wall of the connecting groove (621).

6. The durability test fixture according to claim 2, characterized in that: A vertically arranged channel (13) and a third mounting groove (14) arranged around the lower end of the channel (13) are sequentially provided in the mounting seat (1) below the second mounting groove (12); a push rod (131) is passed through the channel (13); an upper annular plate (121) whose outer peripheral wall is in contact with the inner peripheral wall of the second mounting groove (12) is detachably connected in the second mounting groove (12); a lower annular plate (141) whose outer peripheral wall is in contact with the inner peripheral wall of the third mounting groove (14) is detachably connected in the third mounting groove (14); the push rod (131) is sequentially passed through the upper annular plate (121), the lower annular plate (141) and the clearance opening (611) and is vertically limited.

7. The durability test fixture according to claim 6, characterized in that: The push rod (131) is T-shaped, a limiting groove (1211) is provided on the top of the upper annular plate (121), the outer peripheral wall of the push rod (131) is in contact with the inner peripheral wall of the upper annular plate (121) and the lower annular plate (141), and the push rod (131) is embedded and limited in the limiting groove (1211).

8. The durability test fixture according to claim 7, characterized in that: The top plate (61) is detachably connected to fixing blocks (612) arranged opposite to each other in the horizontal direction, and the two fixing blocks (612) have protruding clamping portions (6121) on opposite sides thereof. Clamping grooves (15) are provided on the outer walls on both sides of the mounting seat (1), and the two fixing blocks (612) are embedded in the clamping grooves (15) through the clamping portions (6121) to press the mounting seat (1) onto the top plate (61).

9. The durability test fixture according to claim 8, characterized in that: The mounting frame (6) further comprises a plurality of vertical plates (63), wherein the plurality of vertical plates (63) are arranged at intervals along the circumference of the top plate (61) and the bottom plate (62), and the upper end of each vertical plate (63) is screwed and locked to the top plate (61) by means of screws, and the lower end of each vertical plate (63) is screwed and locked to the bottom plate (62) by means of screws.

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