CN212363916U

CN212363916U - Tension tester

Info

Publication number: CN212363916U
Application number: CN202021560550.6U
Authority: CN
Inventors: 洪梦遥
Original assignee: Xidefu Hydraulic Parts Shanghai Co ltd
Current assignee: Xidefu Hydraulic Parts Shanghai Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-01-15
Anticipated expiration: 2030-07-31

Abstract

The utility model relates to a tensile testing machine, the testing machine is including survey subassembly and calibrated scale (6), survey the subassembly including unsettled platform (7) that sets up, locate pressure disk (8) of platform (7) bottom, locate elevating platform (9) of pressure disk (8) below, the bottom of pressure disk (8) can be dismantled and be equipped with downwardly extending's plug (1), be equipped with mated support frame (4) on elevating platform (9), can dismantle on mated support frame (4) and be equipped with pipe clamp (2) that are used for unsettled fixed test piece (3) of treating, plug (1) just sets up pipe clamp (2), calibrated scale (6) and pressure disk (8) electricity are connected. Compared with the prior art, the utility model discloses can carry out tensile test to the filter core fast, and the test procedure is simple quick.

Description

Tension tester

Technical Field

The utility model belongs to the technical field of measure, concretely relates to tensile testing machine.

Background

The filter element of the hydraulic filter generally needs to go through the bonding step in the production process, and once certain factors of the step are changed, such as operator replacement, adhesive formula change, component raw material change, bonding process parameter change, equipment overhaul or equipment relocation, and the like, the bonded filter element needs to be subjected to a tensile test again. Without a tensile test, the filter element produced would present a significant quality risk. Considering that the period of entrusting an independent commercial laboratory to carry out the tensile test is too long, and the cost is high, therefore, the design of the tensile tester which can carry out the tensile test quickly and has a simple structure has important practical significance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tensile testing machine can carry out tensile test to the filter core (waiting to test promptly) fast, and the test procedure is simple quick.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a tensile testing machine, the testing machine is including survey subassembly and calibrated scale, survey the subassembly including unsettled platform that sets up, locate the pressure disk of platform bottom, locate the elevating platform of pressure disk below, the bottom of pressure disk can be dismantled and be equipped with downwardly extending's plug, be equipped with mated support frame on the elevating platform, can dismantle on the mated support frame and be equipped with the pipe clamp (the pipe clamp is cliied the upper portion of being tested the piece) that is used for unsettled fixed waiting to test the piece, the plug is just to the pipe clamp setting, calibrated scale and pressure disk electricity are. The core rod, the support frame and the pipe clamp form a set of load conversion device. The supporting frame adopts the parallels, the bottom of awaiting measuring the piece is equipped with down the casing, awaits measuring the inside axial passageway that is equipped with of piece, can pass the plug and then make the tip of plug support on the internal surface of casing down in the axial passageway, if the pulling force of the last casing of the piece of being measured, only need to be tested the piece and overturn can, the calibrated scale is used for showing the plug and to the force of casing application down in real time to this load numerical value when reading the casing under the lower casing and destroying.

The pipe clamp comprises a first clamping block and a second clamping block, wherein a first opening is formed in the first clamping block, a second opening matched with the first opening is formed in the second clamping block, and the first opening and the second opening are arranged right opposite to each other to form a through hole for the to-be-tested part to pass through.

The first clamp splice is provided with a plurality of first connecting holes in a penetrating mode, the second clamp splice is provided with a plurality of second connecting holes matched with the first connecting holes in a penetrating mode, bolts are arranged in the first connecting holes and the second connecting holes, and the end portions of the bolts are provided with nuts matched with the bolts.

And a plurality of anti-slip grains are arranged on the side wall of the first opening and/or the second opening along the circumferential direction. The slipping of the piece to be tested, namely the filter element, is avoided.

The anti-skid stripes are arranged in parallel.

The outside of first clamp splice is equipped with first protection piece, the outside of second clamp splice is equipped with second protection piece.

The test piece is a filter and is cylindrical, and the outer diameter of the core rod is smaller than the inner diameter of the test piece.

And the top of the piece to be tested is provided with a guide sleeve for the core rod to pass through. The guide sleeve can be not fixedly connected with the to-be-tested part, only plays a role in guiding the core rod, and can also be fixedly connected with the to-be-tested part (the to-be-tested part and the guide sleeve can be clamped and connected by adjusting the diameter of the through hole in the guide sleeve) to form a whole with the to-be-tested part, and at the moment, the stress condition during the tensile test is as shown in fig. 6.

The guide sleeve comprises a guide sleeve base and a guide sleeve which are integrally formed, the guide sleeve base is located at the top of the pipe clamp, the guide sleeve is sleeved on the outer side of the core rod, and the outer diameter of the guide sleeve base is larger than the inner diameter of the through hole.

The upper surface part of the pipe clamp, which is contacted with the guide sleeve base, is horizontally arranged, and the lower surface part of the guide sleeve base, which is contacted with the pipe clamp, is horizontally arranged.

The lower surface part of the pipe clamp, which is in contact with the support frame, is horizontally arranged, and the upper surface part of the support frame, which is in contact with the pipe clamp, is horizontally arranged.

The elevating platform includes the elevating platform base, locate on the elevating platform base and the hydraulic stem of liftable, locate the platform of placing on the hydraulic stem, the support frame is located places the bench. The lifting platform further comprises an oil cylinder, pressure oil enters the oil cylinder after the pressure testing machine is powered on, the hydraulic rod is started, and then the placing platform is lifted. A protective sleeve is arranged between the placing table and the lifting table base and sleeved outside the hydraulic rod.

And upright posts are arranged on two sides of the platform.

The pressure plate is provided with a central hole for fixing the core rod, the core rods with different specifications are selected according to the size of a tested piece, the core rods can be fixed by placing a rubber ring and the like in the central hole, or the pressure plate capable of adjusting the size of the central hole is adopted.

The utility model discloses an utilize compression testing machine to reequip, at the during operation, utilize pipe clamp and support frame to carry the upper portion of waiting to test the piece, it is unsettled to await measuring the piece, later insert the plug in waiting to test the piece, and support the lower casing of waiting to test the piece, later raise the elevating platform, the perpendicular decurrent power that the plug was used in the lower casing internal surface of waiting to test the piece at this moment is F1 (this is thrust, also can be regarded as the pulling force), it still receives a vertical decurrent gravity G to be tested itself, see from the section view, two power about the vertical ascending resultant force of pipe clamp action on being tested the piece can be simplified into, be F2 and F3 respectively. According to the relation between the acting force and the reacting force, F1+ G is F2+ F3, so that F1+ G and F2+ F3 form a pair of balance forces for the test piece to be tested, and considering that the weight of the test piece is light, the balance forces can be equivalent to F1 which is F2+ F3 (if the weight of the test piece is accurate, the weight or the gravity of the test piece can be weighed). The lifting platform continuously applies pressure, the set of load conversion device continuously applies tension to the test piece to be tested until the test piece is damaged, and the dial is used for reading out the load value when the test piece fails, so that the test is completed.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the existing resources are fully utilized, and no additional investment is added: the pressure testing machine in an idle state is adopted for transformation, so that the pressure testing machine can also be used for measuring the tensile force.

(2) According to the specification of a tested piece (filter element), a proper corresponding pipe clamp (the pipe clamp is an existing product and does not need to be additionally made into a special clamp) and a core rod (the core rod is an existing product) are selected, and a used support frame (sizing block) is matched with an original pressure testing machine and also has various specifications without additional customization.

(3) The assembly time is short: according to the specification of the filter element, the pipe clamp and the core rod are selected, the load conversion device can be quickly assembled into a set within half an hour, the test can be completed within one hour, and a large amount of time can be saved compared with the time of entrusting a third party commercial laboratory.

(4) Safe and reliable: because this testing machine adopts hydraulic pressure slow loading, does not have the impact force, even do not install the safety cover, the risk is also lower.

Drawings

FIG. 1 is a schematic structural diagram of a tensile testing machine;

FIG. 2 is a schematic view of an axial structure of the pipe clamp;

FIG. 3 is a front view of the pipe clamp;

FIG. 4 is a schematic structural diagram of a tensile testing machine during testing;

FIG. 5 is a schematic view of a tensile testing machine;

fig. 6 is a schematic diagram of a tensile testing machine with a guide sleeve.

In the figure: 1-a core rod; 2-pipe clamp; 201-a first clamp splice; 202-a second clamp block; 203-a first opening; 204 — a second opening; 205-a first connection aperture; 206-second connection hole; 207-anti-skid lines; 208-a first protection block; 209-a second protection block; 3-a piece to be tested; 301-a lower housing; 4-a support frame; 5-bolt; 6-dial scale; 7-a platform; 8-pressing a disc; 9-a lifting platform; 901-placing a table; 10-a guide sleeve; 1001-guide sleeve base; 1002-guide sleeve; 11-upright post.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Examples

As shown in figure 1, a tensile testing machine comprises a testing assembly and a dial 6, the testing assembly comprises a platform 7 arranged in a suspended manner, stand columns 11 arranged on two sides of the platform 7, a pressure plate 8 arranged at the bottom of the platform 7, and a lifting table 9 arranged below the pressure plate 8, wherein a central hole for fixing a core rod 1 is arranged on the pressure plate 8, the core rod 1 extending downwards is detachably arranged at the bottom of the pressure plate 8, paired support frames 4 are arranged on the lifting table 9, pipe clamps 2 for suspending and fixing a piece to be tested 3 (the bottom of the piece to be tested 3 is provided with a lower shell 301) are detachably arranged on the paired support frames 4, the core rod 1 is arranged right opposite to the pipe clamps 2, the lower surface of the pipe clamps 2 in contact with the support frames 4 is horizontal, the upper surface of the support frames 4 in contact with the pipe clamps 2 is horizontal, the lifting table 9 comprises a lifting table base, a lifting hydraulic rod arranged on the lifting table, the support frame 4 is positioned on the placing table 901, and the dial 6 is electrically connected with the pressure plate 8. The test piece 3 is cylindrical, and the outer diameter of the core rod 1 is smaller than the inner diameter of the test piece 3. The top of the piece 3 to be tested is provided with a guide sleeve 10 for the core rod 1 to pass through, the guide sleeve 10 comprises a guide sleeve base 1001 and a guide sleeve 1002 which are integrally formed, the guide sleeve base 1001 is located at the top of the pipe clamp 2, the upper surface of the pipe clamp 2 in contact with the guide sleeve base 1001 is horizontally arranged, the lower surface of the guide sleeve base 1001 in contact with the pipe clamp 2 is horizontally arranged, the guide sleeve 1002 is sleeved on the outer side of the core rod 1, and the outer diameter of the guide sleeve base 1001 is larger than the inner diameter of the through hole.

As shown in fig. 2 and 3, the pipe clamp 2 includes a first clamping block 201 and a second clamping block 202, the first clamping block 201 is provided with a first opening 203, the second clamping block 202 is provided with a second opening 204 adapted to the first opening 203, the first opening 203 and the second opening 204 are arranged opposite to each other, so as to form a through hole for passing the test piece 3, the first clamping block 201 is provided with a plurality of first connecting holes 205 in a penetrating manner, the second clamping block 202 is provided with a plurality of second connecting holes 206 matched with the first connecting holes 205 in a penetrating manner, the first connecting holes 205 and the second connecting holes 206 are provided with bolts 5, the end portions of the bolts 5 are provided with nuts, the side walls of the first opening 203 and/or the second opening 204 are provided with a plurality of anti-slip threads 207 along the circumferential direction, the plurality of anti-slip threads 207 are arranged in parallel, the outer side of the first clamping block 201 is provided with a first protecting block 208, and the outer side of the second clamping block 202 is provided with a second protecting block 209.

As shown in fig. 4, the tensile testing machine is used for testing a newly produced test piece 3 to be tested, the upper part of the test piece 3 to be tested is clamped by the pipe clamp 2 and the support frame 4, the test piece 3 to be tested is suspended, then the core rod 1 is inserted into the test piece 3 to be tested and is abutted against the inner surface of the lower shell 301 of the test piece 3 to be tested, and then the lifting platform 9 is lifted, so that the end part of the core rod 1 applies a vertical downward pushing force to the inner surface of the lower shell 301. As shown in fig. 5, during the test, the force of the mandrel 1 acting on the inner surface of the lower housing 301 is F1, and the forces of the pipe clamp 2 acting on the piece 3 to be tested are F2 and F3, respectively. According to the relation between the acting force and the reacting force, F1 is F2+ F3, and when the guide sleeve 10 is arranged on the top of the tested piece 3, the force is applied as shown in FIG. 6. Through the test, when newly-produced tested piece 3's lower casing 301 drops, the pulling force registration that obtains is 9000N, and the experience value of the breaking force that this kind of product past test obtained is 5600N, and adopts the utility model discloses the newly-produced examination of awaiting measuring 3's that records the breaking force is higher than 5600N, consequently thinks newly-produced examination of awaiting measuring 3's performance is not less than existing, can batch production.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a tensile testing machine, a serial communication port, the testing machine is including survey subassembly and calibrated scale (6), survey the subassembly including unsettled platform (7) that sets up, locate pressure disk (8) of platform (7) bottom, locate elevating platform (9) of pressure disk (8) below, the bottom of pressure disk (8) can be dismantled and be equipped with downwardly extending's plug (1), be equipped with mated support frame (4) on elevating platform (9), can dismantle on mated support frame (4) and be equipped with pipe clamp (2) that are used for unsettled fixed waiting to test piece (3), plug (1) is just setting up pipe clamp (2), calibrated scale (6) and pressure disk (8) electricity are connected.

2. The tensile testing machine according to claim 1, wherein the pipe clamp (2) comprises a first clamping block (201) and a second clamping block (202), a first opening (203) is formed in the first clamping block (201), a second opening (204) matched with the first opening (203) is formed in the second clamping block (202), and the first opening (203) and the second opening (204) are arranged oppositely to form a through hole for the test piece (3) to pass through.

3. The tensile testing machine of claim 2, wherein a plurality of first connecting holes (205) are formed through the first clamping block (201), a plurality of second connecting holes (206) matched with the first connecting holes (205) are formed through the second clamping block (202), and bolts (5) are arranged in the first connecting holes (205) and the second connecting holes (206).

4. The tensile testing machine of claim 2, wherein the side wall of the first opening (203) and/or the second opening (204) is provided with a plurality of anti-slip lines (207) along the circumferential direction.

5. The tensile testing machine of claim 2, wherein a first protection block (208) is arranged on the outer side of the first clamping block (201), and a second protection block (209) is arranged on the outer side of the second clamping block (202).

6. The tensile testing machine according to claim 1, wherein the top of the piece to be tested (3) is provided with a guide sleeve (10) for the core rod (1) to pass through.

7. The tensile testing machine according to claim 6, wherein the guide sleeve (10) comprises a guide sleeve base (1001) and a guide sleeve (1002) which are integrally formed, the guide sleeve base (1001) is positioned at the top of the pipe clamp (2), and the guide sleeve (1002) is sleeved on the outer side of the core rod (1).

8. The tensile testing machine according to claim 7, wherein the upper surface portion of the pipe clamp (2) contacting the guide sleeve base (1001) is horizontally arranged, and the lower surface portion of the guide sleeve base (1001) contacting the pipe clamp (2) is horizontally arranged.

9. The tensile testing machine according to claim 1, wherein the lifting platform (9) comprises a lifting platform base, a hydraulic rod which is arranged on the lifting platform base and can be lifted, and a placing platform (901) which is arranged on the hydraulic rod, and the supporting frame (4) is positioned on the placing platform (901).

10. The tensile testing machine according to claim 1, wherein the platform (7) is provided with uprights (11) on both sides.