A nut axial load test tool

Abstract

The present invention relates to the field of aerospace technology, and discloses a nut axial load test fixture, comprising a fixed rod 1, a fixed rod 2 and a mounting mechanism, wherein the mounting mechanism comprises a rotating rod 1, a rotating rod 2, a screw rod 1, a screw rod 2, an upper moving rod, a clamping block, a partition plate and a lower moving rod, and a placement slot 1 is provided at one end of the fixed rod 1. The present invention provides a mounting mechanism, utilizes the rotating rod 1, the clamping block, the slot, the screw rod 2, the upper moving rod and the lower moving rod, to facilitate the replacement of the bolt mounting seat, and provides the rotating rod 2 and the screw rod 1 to facilitate the replacement of the nut mounting seat, thereby achieving the purpose of being able to quickly replace nut test fixtures of different specifications and greatly improving the efficiency, solving the problem that the existing test fixture uses a rigid support plate to be installed on the fixture for testing, and there are always problems with the installation and clamping of the rigid support plate, and the speed of replacing the nut test fixtures of different specifications is relatively slow, and the work efficiency is low.

Description

Technical Field

[0001] The invention relates to the field of aerospace technology, and in particular to a nut axial load test tool. Background Art

[0002] According to the requirements for axial load tests in HB7596 "Test Method for MJ Self-locking Nuts with Operating Temperature Not Higher than 425℃": The main body of the test fixture is a rigid support plate, and the nut is loaded to the specified axial load through the test bolt. At this time, the nut should not produce cracks and deformation that affect the use. The load test needs to be carried out on a universal tensile testing machine. The latest axial load test fixture is a U-groove test fixture, which is connected to the universal tensile testing machine through the U-groove test fixture. The rigid support plate is installed on the fixture for testing. However, there have always been problems with the installation and clamping of the rigid support plate, and the test fixture for nuts of different specifications cannot be quickly replaced, resulting in low test efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a nut axial load test tool, so as to achieve the purpose of being able to quickly replace nut test tools of different specifications and greatly improving efficiency.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a nut axial load test fixture, comprising a fixing rod 1, a fixing rod 2 and a mounting mechanism, the mounting mechanism comprising a rotating rod 1, a rotating rod 2, a screw rod 1, a screw rod 2, an upper moving rod, a block, a partition and a lower moving rod, one end of the fixing rod 1 is provided with a placement groove 1, the inside of the placement groove 1 is provided with a transfer seat 1, a bolt mounting seat and a nut mounting seat are provided between the fixing rod 1 and the fixing rod 2, a placement hole is provided on the side of the bolt mounting seat close to the fixing rod 1, an inner cavity is provided inside the bolt mounting seat, and the inner cavity The top and bottom of the inner wall of the inner cavity are connected to the top and bottom of the partition respectively, and the side wall of the partition is provided with a long hole. One end of the adapter seat passes through the placement hole and extends to the inside of the inner cavity to contact the side wall of the partition. The top and bottom of the adapter seat located inside the inner cavity are provided with slots. The tops of the upper moving rod and the lower moving rod are provided with threaded holes. The internal threads of the two threaded holes are opposite. The surface of the screw rod is provided with threads at two opposite ends. The top of the rotating rod is connected to the bottom of the screw rod. The top of the screw rod passes through the bottom of the bolt mounting seat and the top of the lower moving rod in sequence. The threaded hole and the threaded hole at the top of the upper moving rod, the screw second is threadedly connected with the top of the lower moving rod and the threaded hole and the threaded hole at the top of the upper moving rod, the upper moving rod and the lower moving rod both extend through the long hole to the other side of the partition, the bottom of the upper moving rod and the top of the lower moving rod are respectively in contact with the top and bottom of the adapter seat, and the number of the card blocks is two, and the two card blocks are respectively installed at the bottom of the upper moving rod and the top of the lower moving rod, and the two card blocks respectively extend through the two slot notches to the inside of the slot, the side wall of the bolt mounting seat is installed with an experimental bolt, and one end of the fixing rod two is opened A placement slot three is provided, and an adapter seat two is provided inside the placement slot three. A placement slot two adapted to the side wall of the adapter seat two is opened on the side wall of the nut mounting seat. One end of the adapter seat two sequentially penetrates through the notch of the placement slot three and the notch of the placement slot two and extends to the inside of the placement slot two. The bottom of the rotating rod two is connected to the top of the screw rod one. The bottom of the screw rod one sequentially penetrates through the top of the nut mounting seat and the adapter seat two and extends to the bottom of the nut mounting seat. The screw rod one is threadedly connected to the nut mounting seat and the adapter seat two. A nut to be tested is installed on the side wall of the nut mounting seat, and the nut to be tested is threadedly connected to the test bolt.

[0005] The two ends of the fixing rod 1 and the fixing rod 2 which are far from each other are provided with thread grooves, and the thread groove on one side wall of the fixing rod is threadedly connected with a stud bolt;

[0006] The inner cavity wall is provided with a limiting groove, and the upper moving rod and the lower moving rod both pass through the limiting groove opening and extend to the inside of the limiting groove, and the width of the upper moving rod and the width of the lower moving rod are consistent with the width of the limiting groove.

[0007] Preferably, the outer wall of the adapter seat 1 contacts the inner wall of the placement slot 1, the outer wall of the adapter seat 2 contacts the inner wall of the placement slot 3, the adapter seat 1 is fixedly connected to the fixing rod 1 through a pin, and the adapter seat 2 is fixedly connected to the fixing rod 2 through a second pin.

[0008] Preferably, the two outer walls of the card blocks are in contact with the two inner walls of the slots respectively.

[0009] Preferably, a bearing is installed at the top of the inner cavity wall, and the inner wall of the bearing is connected to the outer wall of the top of the screw.

[0010] Preferably, the length of the long hole is consistent with the length of the partition, and the front and rear hole walls of the long hole are in contact with the front and rear side walls of the upper moving rod and the front and rear side walls of the lower moving rod.

[0011] The present invention provides a nut axial load test tool. It has the following beneficial effects:

[0012] (1) The present invention provides an installation mechanism, utilizes a rotating rod 1, a clamping block, a slot, a screw rod 2, an upper movable rod, and a lower movable rod, so as to facilitate the replacement of a bolt mounting seat. By providing a rotating rod 2 and a screw rod 1, it is convenient to replace a nut mounting seat, thereby achieving the purpose of being able to quickly replace nut test tools of different specifications and greatly improving efficiency. This solves the problem that the existing test tools use a rigid support plate to be mounted on the tooling for experiments, and there have always been problems with the installation and clamping of the rigid support plate, and the speed of replacing nut test tools of different specifications is relatively slow, resulting in low work efficiency.

[0013] (2) The present invention provides a threaded groove at one end of the fixing rod 1 and the fixing rod 2 which are far away from each other. The threaded groove is connected with a stud bolt, so that multiple fixing rods 1 and 2 can be connected together, thereby achieving the purpose of connecting multiple parts in series at one time for experiment.

[0014] (3) The present invention replaces the latest U-groove plate mounting and rigid support plate mounting by providing a nut mounting seat and a bolt mounting seat, thereby achieving the purpose of being convenient to use, low cost, having great practicality, and being easy to promote, and solving the problem that the existing nut axial load test work is inconvenient to use and high cost.

[0015] (4) The present invention sets a limit groove and a long hole, and utilizes the outer walls of the upper moving rod and the lower moving rod to contact the walls of the limit groove and the walls of the long hole, thereby limiting the positions of the upper moving rod and the lower moving rod, so that the upper moving rod and the lower moving rod can only move up and down under the rotation of the screw rod 2, thereby achieving the purpose of ensuring that the card block is not offset and can be inserted into the interior of the slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 A is a magnified view of the local structure of the middle part;

[0018] Figure 3 It is a side view of the bolt mounting seat of the present invention;

[0019] Figure 4 It is a side view of the partition of the present invention;

[0020] Figure 5 It is a top view of the adapter 1 and the adapter 2 of the present invention.

[0021] In the figure: 1 fixed rod 1, 2 mounting mechanism, 201 rotating rod 1, 202 rotating rod 2, 203 screw rod 1, 204 screw rod 2, 205 upper moving rod, 206 block, 207 partition, 208 lower moving rod, 3 fixed rod 2, 4 stud bolt, 5 threaded groove, 6 placement groove 1, 7 adapter seat 1, 8 latch, 9 inner cavity, 10 slot, 11 bolt mounting seat, 12 test bolt, 13 tested nut, 14 nut mounting seat, 15 placement groove 2, 16 adapter seat 2, 17 placement groove 3, 18 placement hole, 19 long hole, 20 limit groove. DETAILED DESCRIPTION

[0022] like Figure 1-5As shown, the present invention provides a technical solution: a nut axial load test tool, comprising a fixing rod 1, a fixing rod 2 3 and a mounting mechanism 2, the mounting mechanism 2 comprising a rotating rod 1 201, a rotating rod 202, a screw rod 1 203, a screw rod 204, an upper moving rod 205, a block 206, a partition 207 and a lower moving rod 208, a placement groove 6 is provided at one end of the fixing rod 1, a transfer seat 7 is provided inside the placement groove 6, a bolt mounting seat 11 and a nut mounting seat 14 are provided between the fixing rod 1 and the fixing rod 2 3, a placement hole 18 is provided on the side of the bolt mounting seat 11 close to the fixing rod 1, the placement hole 18 is adapted to one end of the transfer seat 7, an inner cavity 9 is provided inside the bolt mounting seat 11, and the inner cavity 9 is connected to the placement hole 18, The top and bottom of the inner wall of the inner cavity 9 are fixedly connected to the top and bottom of the partition 207 respectively, and a long hole 19 is provided on the side wall of the partition 207. One end of the adapter seat 7 passes through the placement hole 18 and extends to the inside of the inner cavity 9 to contact the side wall of the partition 207. The top and bottom of the adapter seat 7 located inside the inner cavity 9 are provided with slots 10. The top of the upper moving rod 205 and the lower moving rod 208 are both provided with threaded holes. The internal threads of the two threaded holes are opposite. The surface of the screw rod 204 is provided with opposite threads at both ends. The top of the rotating rod 1 201 is fixedly connected to the bottom of the screw rod 204. The top of the screw rod 204 passes through the bottom of the bolt mounting seat 11, the threaded hole at the top of the lower moving rod 208 and the threaded hole at the top of the upper moving rod 205 in sequence. The screw rod 204 and the top of the lower moving rod 208 The threaded hole and the threaded hole at the top of the upper moving rod 205 are threadedly connected, the upper moving rod 205 and the lower moving rod 208 both penetrate the long hole 19 and extend to the other side of the partition 207, the bottom of the upper moving rod 205 and the top of the lower moving rod 208 are respectively in contact with the top and bottom of the adapter seat 17, the number of the block 206 is two, the two blocks 206 are respectively fixedly installed at the bottom of the upper moving rod 205 and the top of the lower moving rod 208, the two blocks 206 respectively penetrate the notches of the two slots 10 and extend to the inside of the slot 10, the side wall of the bolt mounting seat 11 is fixedly installed with an experimental bolt 12, a placement groove 3 17 is provided at one end of the fixing rod 23, a transfer seat 2 16 is provided inside the placement groove 3 17, and a nut mounting seat 14 side wall is provided with a nut that matches the side wall of the transfer seat 2 16 The placement groove 2 15, one end of the adapter seat 2 16 sequentially penetrates the notch of the placement groove 3 17 and the notch of the placement groove 2 15 to extend to the inside of the placement groove 2 15, the bottom of the rotating rod 2 202 is fixedly connected with the top of the screw rod 1 203, the bottom of the screw rod 1 203 sequentially penetrates the top of the nut mounting seat 14 and the adapter seat 2 16 to extend to the bottom of the nut mounting seat 14, the screw rod 1 203 and the nut mounting seat 14 and the adapter seat 2 16 are all threadedly connected, the side wall of the nut mounting seat 14 is fixedly installed with a nut 13 to be tested, and the nut 13 to be tested is threadedly connected with the test bolt 12, the two ends of the fixing rod 1 and the fixing rod 2 3 that are away from each other are provided with thread grooves 5, the thread grooves 5 on the side wall of the fixing rod 1 are threadedly connected with stud bolts 4, the outer wall of the adapter seat 7 is in contact with the inner wall of the placement groove 6,The outer wall of the transfer seat 2 16 contacts the inner wall of the placement slot 3 17, the transfer seat 1 7 is fixedly connected to the fixing rod 1 through the latch 8, the transfer seat 2 16 is fixedly connected to the fixing rod 2 3 through the second latch, the inner cavity 9 wall is provided with a limit groove 20, the upper moving rod 205 and the lower moving rod 208 both pass through the notch of the limit groove 20 and extend to the inside of the limit groove 20, the width of the upper moving rod 205 and the width of the lower moving rod 208 are consistent with the width of the limit groove 20, the outer walls of the two blocks 206 are respectively in contact with the inner walls of the two slots 10, and the top of the inner cavity 9 wall is provided with a limit groove 20. A bearing is fixedly installed at the top, and the inner wall of the bearing is fixedly connected to the outer wall of the top of the screw rod 203. The length of the long hole 19 is consistent with the length of the partition 207. The front and rear hole walls of the long hole 19 are in contact with the front and rear side walls of the upper moving rod 205 and the front and rear side walls of the lower moving rod 208. By setting the installation mechanism 2, using the rotating rod 201, the block 206, the slot 10, the screw rod 204, the upper moving rod 205 and the lower moving rod 208, it is convenient to replace the bolt mounting seat 11. By setting the rotating rod 202 and the screw rod 203, it is convenient to replace the nut mounting seat 14, thereby achieving the purpose of being able to quickly replace the nut experimental tooling of different specifications and greatly improving the efficiency. The ends of the fixing rod 1 and the fixing rod 2 3 that are far away from each other are provided with a threaded groove 5. The stud bolt 4 is threadedly connected in the threaded groove 5, so that multiple fixing rods 1 and the fixing rod 2 3 can be connected together, thereby achieving the purpose of being able to connect multiple parts in series for experiment at one time. By arranging the nut mounting seat 14 and the bolt mounting seat 11 to replace the latest U-shaped groove plate mounting and rigid support plate mounting, the purpose of convenient use, low cost, great practicality and easy promotion is achieved. By arranging the limiting groove 20 and the long hole 19, the outer wall of the upper moving rod 205 and the outer wall of the lower moving rod 208 are in contact with the groove wall of the limiting groove 20 and the hole wall of the long hole 19, so as to limit the position of the upper moving rod 205 and the lower moving rod 208, so that the upper moving rod 205 and the lower moving rod 208 can only move up and down under the rotation of the screw rod 204, thereby achieving the purpose of ensuring that the block 206 is not offset and can be inserted into the inside of the slot 10. ,

[0023] When in use, the rotating rod 201 is rotated to drive the screw rod 204 to rotate. Under the action of the limit groove 20 and the long hole 19, the upper moving rod 205 moves upward and the lower moving rod 208 moves downward, thereby driving the two blocks 206 to disengage from the slot 10, and then the adapter seat 17 is pulled out from the inner cavity 9, so that the bolt mounting seat 11 is easy to replace, and the rotating rod 202 is rotated. The rotating rod 202 drives the screw rod 1 203 to rotate, and the screw rod 1 203 is pulled out from the inside of the adapter seat 2 16, so that the adapter seat 2 16 is pulled out from the inside of the placement groove 2 15, so that the nut mounting seat 14 is very convenient to replace, and the purpose of achieving fast replacement of nut experimental tooling for different specifications and greatly improving the efficiency is achieved. Since the ends of the fixing rod 1 and the fixing rod 2 3 that are far away from each other are both provided with threaded grooves 5, multiple fixing rods 1 and fixing rods 2 3 can be connected by using stud bolts 4, thereby achieving the purpose of being able to connect multiple parts in series for experiment at one time.

[0024] In summary, the present invention provides a mounting mechanism 2, utilizes a rotating rod 1 201, a block 206, a slot 10, a screw rod 204, an upper movable rod 205 and a lower movable rod 208, so as to facilitate the replacement of a bolt mounting seat 11. By providing a rotating rod 202 and a screw rod 1 203, it is convenient to replace a nut mounting seat 14, thereby achieving the purpose of being able to quickly replace nut experimental tools of different specifications and greatly improving efficiency. This solves the problem that the existing experimental tools utilize a rigid support plate to be mounted on the tooling for experiments, and there has always been a problem in the installation and clamping of the rigid support plate, and the speed of replacing nut experimental tools of different specifications is relatively slow and the work efficiency is low. By arranging the ends of the fixing rod 1 and the fixing rod 2 3 that are far away from each other, thread grooves 5 are provided, and stud bolts 4 are threadedly connected in the thread grooves 5, a plurality of fixing tools can be Rod 1 and fixing rod 2 3 are connected together, so that the purpose of connecting multiple parts in series at one time for experiment is achieved. By setting a nut mounting seat 14 and a bolt mounting seat 11 to replace the latest U-shaped groove plate mounting and rigid support plate mounting, the purpose of convenient use, low cost, great practicality and easy promotion is achieved, and the problem of inconvenient use and high cost of existing nut axial load experiments is solved. By setting a limiting groove 20 and a long hole 19, the outer wall of the upper moving rod 205 and the outer wall of the lower moving rod 208 are in contact with the groove wall of the limiting groove 20 and the hole wall of the long hole 19, thereby limiting the position of the upper moving rod 205 and the lower moving rod 208, so that the upper moving rod 205 and the lower moving rod 208 can only move up and down under the rotation of the screw rod 204, thereby ensuring that the block 206 is not offset and can be inserted into the inside of the slot 10.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nut axial load test tool, comprising a fixing rod 1 (1), a fixing rod 2 (3) and a mounting mechanism (2), characterized in that: The mounting mechanism (2) comprises a rotating rod (201), a rotating rod (202), a screw rod (203), a screw rod (204), an upper moving rod (205), a block (206), a partition (207) and a lower moving rod (208); a placement groove (6) is provided at one end of the fixed rod (1); a transfer seat (7) is provided inside the placement groove (6); a bolt mounting seat (11) and a nut mounting seat (14) are provided between the fixed rod (1) and the fixed rod (3); a placement hole (18) is provided on a side of the bolt mounting seat (11) close to the fixed rod (1); an inner cavity (9) is provided inside the bolt mounting seat (11); the inner cavity (9) is connected to the placement hole (18); the inner cavity (14) is provided with a nut mounting seat (14); a nut mounting seat (14) is provided between the fixed rod (1) and the fixed rod (3); a nut mounting seat (14) is provided with a nut mounting seat (14); a nut mounting seat (14) is provided with a nut mounting seat (14) and a nut mounting seat (14) is provided between the fixed rod (1) and the fixed rod (1); ... with a nut mounting seat (14) and a nut mounting seat (14) is provided with a nut mounting seat (14) and a nut mounting seat (14) is provided with a nut mounting seat (14) and a nut mounting seat (14) is provided with a 9) The top and bottom of the inner wall are respectively connected to the top and bottom of the partition (207), the side wall of the partition (207) is provided with a long hole (19), one end of the adapter seat (7) passes through the placement hole (18) and extends to the inside of the inner cavity (9) to contact the side wall of the partition (207), the top and bottom of the adapter seat (7) located inside the inner cavity (9) are provided with slots (10), the top of the upper moving rod (205) and the top of the lower moving rod (208) are both provided with threaded holes, the internal threads of the two threaded holes are opposite, the surface of the screw rod (204) is provided with threads at both ends opposite to each other, the top of the rotating rod (201) is connected to the bottom of the screw rod (204), the top of the screw rod (204) passes through the bottom of the bolt mounting seat (11), the lower moving rod (205) and the lower moving rod (208) in sequence. The threaded hole at the top of the moving rod (208) and the threaded hole at the top of the upper moving rod (205), the screw rod 2 (204) is threadedly connected with the top of the lower moving rod (208) and the threaded hole at the top of the upper moving rod (205), the upper moving rod (205) and the lower moving rod (208) are both extended through the long hole (19) to the other side of the partition (207), the bottom of the upper moving rod (205) and the top of the lower moving rod (208) are respectively in contact with the top and bottom of the transfer seat 1 (7), the number of the block (206) is two, the two blocks (206) are respectively installed at the bottom of the upper moving rod (205) and the top of the lower moving rod (208), the two blocks (206) respectively extend through the slots of the two slots (10) To the inside of the slot (10), the side wall of the bolt mounting seat (11) is installed with a test bolt (12), one end of the fixing rod 2 (3) is provided with a placement groove 3 (17), and the inside of the placement groove 3 (17) is provided with a transfer seat 2 (16), the side wall of the nut mounting seat (14) is provided with a placement groove 2 (15) adapted to the side wall of the transfer seat 2 (16), one end of the transfer seat 2 (16) sequentially penetrates the notch of the placement groove 3 (17) and the notch of the placement groove 2 (15) and extends to the inside of the placement groove 2 (15), the bottom of the rotating rod 2 (202) is connected to the top of the screw rod 1 (203), and the bottom of the screw rod 1 (203) sequentially penetrates the top of the nut mounting seat (14) and the transfer seat 2 (16) and extends to the bottom of the nut mounting seat (14),The screw rod 1 (203) is threadedly connected to the nut mounting seat (14) and the adapter seat 2 (16); a nut to be tested (13) is installed on the side wall of the nut mounting seat (14); and the nut to be tested (13) is threadedly connected to the test bolt (12); The two ends of the fixing rod 1 (1) and the fixing rod 2 (3) which are away from each other are both provided with thread grooves (5), and the thread grooves (5) on the side walls of the fixing rod 1 (1) are threadedly connected with stud bolts (4); The inner cavity (9) has a cavity wall with a limiting groove (20), and the upper moving rod (205) and the lower moving rod (208) both pass through the notch of the limiting groove (20) and extend into the interior of the limiting groove (20), and the width of the upper moving rod (205) and the width of the lower moving rod (208) are consistent with the width of the limiting groove (20).

2. A nut axial load test tool according to claim 1, characterized in that: The outer wall of the adapter seat 1 (7) contacts the inner wall of the placement groove 1 (6), the outer wall of the adapter seat 2 (16) contacts the inner wall of the placement groove 3 (17), the adapter seat 1 (7) is fixedly connected to the fixing rod 1 (1) through a latch (8), and the adapter seat 2 (16) is fixedly connected to the fixing rod 2 (3) through a second latch.

3. A nut axial load test tool according to claim 1, characterized in that: The outer walls of the two clamping blocks (206) are in contact with the inner walls of the two slots (10) respectively.

4. A nut axial load test tool according to claim 1, characterized in that: A bearing is installed at the top of the inner cavity (9) wall, and the inner wall of the bearing is connected to the outer wall of the top of the screw rod (203).

5. The nut axial load test tool according to claim 1, characterized in that: The length of the long hole (19) is consistent with the length of the partition (207), and the front and rear hole walls of the long hole (19) are in contact with the front and rear side walls of the upper moving rod (205) and the front and rear side walls of the lower moving rod (208).

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