CN212780237U - Hopkinson bar active confining pressure testing device - Google Patents

Abstract

The utility model discloses a hopkinson pole initiative confined pressure testing arrangement, the novel nipple rectifier comprises a cylindrical shel, the barrel surface is provided with the oiling mouth, barrel inner wall fixedly connected with connecting rod, connecting rod tip fixedly connected with fixing sleeve, first through-hole has been seted up on the fixing sleeve surface, the equal a set of fixed block of fixedly connected with in barrel surface both sides, the barrel both sides are provided with sealed lid, one side surface covering that sealed lid is close to the barrel has the sealing layer, sealing layer one side and barrel laminating, sealed marginal fixedly connected with additional plate of lid, the second through-hole has been seted up at additional plate middle part, be provided with first screw thread knob in the second through-hole, first screw thread knob tip rotates the spiro union in the fixed block. The utility model discloses can make sealed lid and barrel between sealed, the junction of incident pole/projection pole and sealed lid is sealed firm to make the pressure in the barrel reach and predetermine pressure, thereby make the test accurate.

Description

Hopkinson bar active confining pressure testing device

Technical Field

The utility model relates to a material detects technical field, specifically is a Hopkinson bar initiative confined pressure testing arrangement.

Background

The split Hopkinson bar is an effective experimental device for researching the dynamic mechanical property of the material in a one-dimensional stress state. Since Kolsky invented the device and used it to research dynamic mechanical properties of materials under one-dimensional stress state in 1949, the experimental technique has been improved. However, many engineering materials are subjected to not only axial dynamic load but also static radial load (confining pressure) in the service process, so that it is necessary to experimentally study the mechanical response of the materials when the materials are subjected to the axial dynamic load again under the condition of the static confining pressure. Therefore, there have been many researchers using a hopkinson pressure bar and confining pressure device to perform the above experiments.

The problem that current hopkinson pole confined pressure testing arrangement has sealed effect not good exists, and in order to get to put the test material, sealed lid needs often to be opened, and is sealed insecure between sealed lid and the barrel easily, and the sealed effect of the junction of incident pole/projection pole and sealed lid is not good, leads to the pressure in the barrel to be less than preset pressure to lead to the test not accurate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hopkinson pole initiative confined pressure testing arrangement to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an active confining pressure testing device for a Hopkinson bar comprises a barrel body, wherein an oil injection port is formed in the surface of the barrel body, a connecting rod is fixedly connected to the inner wall of the barrel body, a fixing sleeve is fixedly connected to the end portion of the connecting rod, a first through hole is formed in the surface of the fixing sleeve, a group of fixing blocks are fixedly connected to the two sides of the outer surface of the barrel body, sealing covers are arranged on the two sides of the barrel body, a sealing layer covers the surface, close to one side of the barrel body, of each sealing cover, one side of each sealing layer is attached to the barrel body, an additional plate is fixedly connected to the edge of each sealing cover, a second through hole is formed in the middle of each additional plate, a first threaded knob is arranged in each second through hole, the end portion of each first threaded knob is rotatably screwed to, the lantern ring has all been cup jointed on incident pole and the projecting rod surface, the spiro union has second screw thread knob to run through lantern ring one side, second screw thread knob one end compresses tightly to be fixed in incident pole and projecting rod.

Preferably, lantern ring one side fixed connection has the elastic rubber circle, the chamfer has been seted up to elastic rubber circle outer lane, and is two sets of elastic rubber circle inner wall laminates with the surface of incident pole and profection pole respectively, the outer wall of elastic rubber circle and the inner wall laminating of third through-hole.

Preferably, the outer surface of the cylinder body is fixedly connected with a guide sleeve, the edge of the sealing cover is fixedly connected with a guide rod, and the guide rod is in sliding fit with the guide sleeve.

Preferably, the cylinder body is a cylindrical cylinder, and the fixed sleeve is a rectangular cylinder.

Preferably, the first through holes are round holes, and the first through holes are distributed on the surface of the fixing sleeve at equal intervals.

Preferably, the sealing layer is provided as an elastic rubber layer.

Preferably, each group of fixed blocks are distributed in an annular array relative to the central axis of the cylinder, and at least three fixed blocks are arranged in each group.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses, set up the attachment plate on the sealed lid, set up the fixed block on the barrel surface, set up the second through-hole on the attachment plate, the first screw knob passes the second through-hole after and is connected with the fixed block, through the screwing of first screw knob, can move the attachment plate to one side of fixed block, thus make the sealed lid move to one side of barrel, make sealed lid and barrel closely laminate, strengthen the sealed effect between sealed lid and barrel;

2. the utility model discloses, the surface of incident pole and projecting pole all is provided with the elasticity rubber circle, and the chamfer has been seted up to the rubber circle surface, and when incident pole and projecting pole were close to each other, the rubber circle stretched into in the third through-hole to plug up the third through-hole, strengthen the leakproofness between sealed lid and incident pole/projecting pole; and the elastic rubber circle is portable, and when the material length grow that tests, the length that the sealed lid of incidence pole/projection pole stretched into diminishes, at this moment removes the elastic rubber circle, can make elastic rubber circle and third through hole continue to cooperate, can fix the elastic rubber circle through fixed lantern ring.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

fig. 3 is a schematic side view of the sealing cover of the present invention.

In the figure: 1. a barrel; 2. a connecting rod; 3. fixing the sleeve; 4. a first through hole; 5. a fixed block; 6. a sealing cover; 7. a sealing layer; 8. an additional plate; 9. a second through hole; 10. a first threaded knob; 11. a third through hole; 12. an incident rod; 13. a projecting rod; 14. a collar; 15. an elastic rubber ring; 16. chamfering; 17. a guide sleeve; 18. a guide bar; 19. an oil filling port; 20. a second threaded knob.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a hopkinson pole initiative confined pressure testing arrangement, includes barrel 1, and 1 surface of barrel is provided with oiling mouth 19, 1 inner wall fixedly connected with connecting rod 2 of barrel, 2 end fixedly connected with fixed sleeve 3 of connecting rod, and first through-hole 4 has been seted up on fixed sleeve 3 surface, and first through-hole 4 is the round hole, and first through-hole 4 distributes at fixed sleeve 3 surface equidistance. The cylinder body 1 is a cylindrical cylinder, and the fixed sleeve 3 is a rectangular cylinder.

The two sides of the outer surface of the barrel body 1 are fixedly connected with a set of fixing blocks 5, each set of fixing blocks 5 are distributed in an annular array relative to the central axis of the barrel body 1, and at least three fixing blocks 5 are arranged. Sealing covers 6 are arranged on two sides of the cylinder body 1, a sealing layer 7 covers the surface of one side, close to the cylinder body 1, of each sealing cover 6, one side of each sealing layer 7 is attached to the cylinder body 1, and each sealing layer 7 is an elastic rubber layer.

6 edge fixedly connected with attachment plates 8 of sealed lid, second through-hole 9 has been seted up at 8 middle parts of attachment plates, be provided with first screw thread knob 10 in the second through-hole 9, the spiro union in fixed block 5 is rotated to first screw thread knob 10 tip, third through-hole 11 has been seted up at 6 middle parts of sealed lid, be provided with incident rod 12 in the third through-hole 11, be provided with profection pole 13 in another third through-hole 11, lantern ring 14 has all been cup jointed on incident rod 12 and profection pole 13 surface, lantern ring 14 one side is run through the spiro union and is had second screw thread knob 20, second screw thread knob 20 one end compresses tightly and is fixed in incident rod 12 and profection pole 13, lantern ring 14 one side fixedly connected with elastic rubber circle 15, chamfer 16 has been seted up to elastic rubber circle 15 outer lane, 15 inner walls of two sets of elastic rubber circle are laminated with the surface of incident rod 12 and profection pole 13.

The outer surface of the cylinder 1 is fixedly connected with a guide sleeve 17, the edge of the sealing cover 6 is fixedly connected with a guide rod 18, and the guide rod 18 is in sliding fit with the guide sleeve 17. Through the connection of guide pin bushing 17 and guide arm 18, can carry out preliminary location to sealed lid 6 and barrel 1, be convenient for connect to the quantity of guide pin bushing 17 is a plurality of and also for the annular array distribution of barrel 1 axis.

The structure principle is as follows: an additional plate 8 is arranged on the sealing cover 6, a fixed block 5 is arranged on the outer surface of the barrel 1, a second through hole 9 is formed in the additional plate 8, a first threaded knob 10 penetrates through the second through hole 9 and then is connected with the fixed block 5, and the additional plate 8 can move towards one side of the fixed block 5 through screwing of the first threaded knob 10, so that the sealing cover 6 moves towards one side of the barrel 1, the sealing cover 6 is tightly attached to the barrel 1, and the sealing effect between the sealing cover 6 and the barrel 1 is enhanced; the surfaces of the incident rod 12 and the projecting rod 13 are both provided with elastic rubber rings 15, the outer surfaces of the elastic rubber rings 15 are provided with chamfers 16, when the incident rod 12 and the projecting rod 13 are close to each other, the elastic rubber rings 15 extend into the third through holes 11 so as to block the third through holes 11, and the sealing performance between the sealing cover 6 and the incident rod 12/the projecting rod 13 is enhanced; and the elastic rubber ring 15 can move, when the length of the tested material is increased, the length of the incident rod 12/the projection rod 13 extending into the sealing cover 6 is reduced, at the moment, the elastic rubber ring 15 is moved, the elastic rubber ring 15 can be continuously matched with the third through hole 11, the lantern ring 14 can be fixed through the second thread knob 20, and the elastic rubber ring 15 can be fixed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a Hopkinson bar initiative confined pressure testing arrangement, includes barrel (1), its characterized in that: the oil injection device is characterized in that an oil injection port (19) is formed in the surface of the barrel body (1), a connecting rod (2) is fixedly connected to the inner wall of the barrel body (1), a fixing sleeve (3) is fixedly connected to the end portion of the connecting rod (2), a first through hole (4) is formed in the surface of the fixing sleeve (3), a group of fixing blocks (5) is fixedly connected to the two sides of the outer surface of the barrel body (1), sealing covers (6) are arranged on the two sides of the barrel body (1), a sealing layer (7) covers the surface of one side, close to the barrel body (1), of each sealing cover (7) and the barrel body (1), an additional plate (8) is fixedly connected to the edge of each sealing cover (6), a second through hole (9) is formed in the middle of each additional plate (8), a first thread knob (10) is arranged in each second through hole (, third through-hole (11) have been seted up at sealed lid (6) middle part, be provided with in a third through-hole (11) incident pole (12), be provided with in another third through-hole (11) and throw pole (13), lantern ring (14) have all been cup jointed on incident pole (12) and the surface of throwing pole (13), lantern ring (14) one side is run through the spiro union and is had second screw knob (20), second screw knob (20) one end compresses tightly and is fixed in incident pole (12) and throwing pole (13).

2. The active confining pressure testing device for the Hopkinson bar as recited in claim 1, wherein: lantern ring (14) one side fixed connection has elastic rubber circle (15), chamfer (16), two sets of have been seted up to elastic rubber circle (15) outer lane elastic rubber circle (15) inner wall is laminated with the surface of incident pole (12) and profection pole (13) respectively, the outer wall of elastic rubber circle (15) and the inner wall laminating of third through-hole (11).

3. The active confining pressure testing device for the Hopkinson bar as recited in claim 1, wherein: the outer surface of the cylinder body (1) is fixedly connected with a guide sleeve (17), the edge of the sealing cover (6) is fixedly connected with a guide rod (18), and the guide rod (18) is in sliding fit with the guide sleeve (17).

4. The active confining pressure testing device for the Hopkinson bar as recited in claim 1, wherein: the barrel body (1) is a cylindrical barrel, and the fixed sleeve (3) is a rectangular barrel.

5. The active confining pressure testing device for the Hopkinson bar as recited in claim 1, wherein: the first through holes (4) are round holes, and the first through holes (4) are distributed on the surface of the fixing sleeve (3) at equal intervals.

6. The active confining pressure testing device for the Hopkinson bar as recited in claim 1, wherein: the sealing layer (7) is arranged as an elastic rubber layer.

7. The active confining pressure testing device for the Hopkinson bar as recited in claim 1, wherein: each group of the fixing blocks (5) are distributed in an annular array relative to the central axis of the barrel (1), and at least three fixing blocks (5) are arranged in each group.

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