CN206756575U - A kind of pressure testing machine loading device - Google Patents
A kind of pressure testing machine loading device Download PDFInfo
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- CN206756575U CN206756575U CN201720537114.9U CN201720537114U CN206756575U CN 206756575 U CN206756575 U CN 206756575U CN 201720537114 U CN201720537114 U CN 201720537114U CN 206756575 U CN206756575 U CN 206756575U
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Abstract
The utility model discloses a kind of pressure testing machine loading device, including shell and loading unit, the shell and loading unit are square, the loading unit is arranged in the shell, the loading unit includes square fixed underpan and multiple square loading blocks, the loading blocks are in criss-cross arrangement on the fixed underpan, and the line number of the loading blocks is equal with columns, has gap between the adjacent loading blocks.The utility model pressure testing machine loading device is pressurizeed by modularization load mode to test specimen, single loading blocks can be independently pressurized, and there is gap between loading blocks, make loading blocks that there is certain expansion space and mobile space, so as at utmost reduce the influence of hoop effect, the accuracy of pressure-loaded result of the test is improved.
Description
Technical field
It the utility model is related to engineering testing equipment technical field, and in particular to a kind of pressure testing machine loading device.
Background technology
Pressure testing machine is mainly used in the mechanical property test of material or component, existing pressure test loading equipemtn be by
Test block or test specimen are positioned on loading bench, apply unified load to test block or test specimen, and load shares loaded surfaces equally after applying,
Test block surface load is evenly distributed, and can not obtain the load of other forms.
Existing pressure testing machine uses Rigid Plates Under Compression loading head, and test specimen on forcing press when being pressurized, along loading direction
While generation linear deformation, lateral expansion, loading head Steel material and material for test resistance to deformation after by load can be also produced
Ability is different, thus forms frictional force in the compression face of loading head and test specimen, and effect of contraction is played to the lateral expansion of test specimen, this
Kind effect of contraction is referred to as hoop effect, and its compression face additional load situation is as shown in Figure 1.Hoop effect can cause loading head and examination
There is additional deformation load in part contact surface, so that test specimen stress is different from anticipation situation, influence the accuracy of result of the test.
In view of drawbacks described above, the utility model creator obtains this practicality newly finally by prolonged research and practice
A kind of pressure testing machine loading device of type.
Utility model content
To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is, there is provided a kind of pressure testing machine adds
Carry and put, including shell and loading unit, the shell and loading unit are square, the loading unit is arranged in the shell,
The loading unit includes square fixed underpan and multiple square loading blocks, and the loading blocks are in criss-cross arrangement in the fixation
On chassis, and the line number of the loading blocks is equal with columns, has gap between the adjacent loading blocks.
Preferably, each loading blocks are connected by a piston connector with the fixed underpan, the fixed underpan
The piston hole of multiple insertions is provided with, for installing the piston connector, the piston hole site sum amount and the loading
Block is corresponding.
Preferably, the piston connector includes piston and joint, connecting rod, the work are provided between the piston and joint
Plug is arranged in the piston hole, and the middle part of the loading blocks one side is provided with link slot, and the joint is arranged on the link slot
It is interior.
Preferably, having gap between the joint and the link slot, the loading blocks have activity space.
Preferably, the joint is spherical, the link slot is ball recess, and the loading blocks have rotation space.
Preferably, the piston hole is provided with liner packing ring, for adjusting the size of the piston hole.
Preferably, the line number of the loading blocks is 5~20 rows, columns is 5~20 row.
Preferably, the loading unit shares 100 loading blocks, the arrangement mode of the loading blocks is 10 × 10 rows
Row.
Preferably, forming pressure chamber between the shell and the fixed underpan, the shell side is provided with and the pressure
The forcing pipe of power chamber connection, is passed through pressure medium in the pressure chamber.
Preferably, the pressure medium is hydraulic oil or compressed air.
The beneficial effects of the utility model are compared with the prior art：
1, the utility model pressure testing machine loading device is pressurizeed by modularization load mode to test specimen, single loading blocks
Can be independently pressurized, and there is movable gap between loading blocks, so as at utmost reduce the influence of hoop effect, improve pressure and add
Carry the accuracy of result of the test.
2, realized and pressurizeed by pressure medium, can accurately adjust on-load pressure, and loading blocks have certain activity empty
Between, loading blocks each can be moved independently on test specimen interface, be bonded with surface of test piece, reduce test error.
3, in the case of all loading block size identicals, by changing the size of piston hole, realize to lotus in loading blocks
The big minor adjustment carried, so that the diverse location of same test specimen can be simulated actual loading situation by different loads.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in various embodiments of the utility model, institute in being described below to embodiment
The accompanying drawing needed to use is briefly described.
The force diagram of test specimen compression face additional load when Fig. 1 is existing pressure testing machine loading；
Fig. 2 is the stereogram of the utility model pressure testing machine loading device；
Fig. 3 is the upward view of pressure testing machine loading device in embodiment two；
Fig. 4 is the front view of pressure testing machine loading device in embodiment two；
Fig. 5 is the structure chart of loading blocks and piston rod in embodiment two；
Fig. 6 is the structure chart of fixed underpan in embodiment two；
Fig. 7 is the explosive view of one group of loading blocks and piston rod in embodiment three；
Fig. 8 is the force diagram of test specimen when using six pressure testing machine loading device of embodiment；
Fig. 9 is the force diagram of test specimen when using seven pressure testing machine loading device of embodiment.
Numeral represents in figure：
1. the link slot of 7. joint of shell 2. forcing pipe, 3. loading blocks, 4. piston, 5. fixed underpan, 6. piston hole 8.
Embodiment
Below in conjunction with accompanying drawing, and other technical characteristic above-mentioned to the utility model and advantage are described in more detail.
Embodiment one
As shown in Fig. 2 a kind of pressure testing machine loading device, including shell 1 and loading unit, the shell 1 and loading unit
It is square, loading unit is arranged in shell 1, and connecting portion forms sealing.Pressure is formed between the shell 1 and loading unit
Chamber, the side of shell 1 are provided with forcing pipe 2, and the one end of forcing pipe 2 connects with pressure chamber, and other end connection external pressure pipeline, pressurization is situated between
Matter enters in pressure chamber from forcing pipe 2, applies pressure to loading unit.
The loading unit includes square fixed underpan and multiple square loading blocks 3.The loading blocks 3 are in criss-cross arrangement
On the fixed underpan, and the line number of the loading blocks 3 is equal with columns, has gap between adjacent loading blocks 3.Pressure
The pressure medium of power intracavitary is independently pressurized to each loading blocks 3, is operated independently of each other between loading blocks 3.
Test specimen is positioned on pressure testing machine, the loaded member up and down of pressure testing machine is tried using the utility model pressure
Test machine loading device.Adjustment position makes loading unit surface be bonded with test specimen, and pressurization is passed through into pressure chamber by forcing pipe 2 is situated between
Matter, loading blocks 3 are by pressure transmission to test specimen, surface of test piece load.The pressure testing machine loading device passes through modularization loading side
Formula is pressurizeed to test specimen, and the single independent pressure of loading blocks 3, each loading blocks 3 only play constraint to the lateral expansion of a fritter test specimen
Effect.And there is gap between loading blocks 3, make loading blocks 3 that there is certain expansion space and mobile space, do not make mutually
With, different loading blocks 3 can cancel out each other to frictional force caused by surface of test piece, so as to it is overall reduce surface of test piece by
Frictional force, reduce hoop effect to greatest extent, improve the accuracy of result of the test.
Embodiment two
As shown in Figure 3 and Figure 4, a kind of pressure testing machine loading device, including shell 1 and loading unit, the shell 1 and plus
Load portion is square, and loading unit is arranged in the shell 1, and connecting portion forms sealing.The loading unit includes square fixation
Chassis 5 and 100 square loading blocks 3, the loading blocks 3 are arranged on the fixed underpan 5 in 10 × 10 forms, and adjacent adds
There is gap between load block 3.
Form pressure chamber between the shell 1 and fixed underpan 5, the side of shell 1 is provided with forcing pipe 2, the one end of forcing pipe 2 with
Pressure chamber is connected, other end connection hydraulic oil pipeline, and being passed through hydraulic oil in the pressure chamber is pressurizeed, and can accurately be adjusted and be added
Carry pressure.
As shown in Figure 5 and Figure 6, each loading blocks 3 are connected by a piston connector with the fixed underpan 5, institute
It is piston 4 to state piston connector one end.The fixed underpan 5 is provided with the piston hole 6 of multiple insertions, for installing the work
Plug 4, the position of piston hole 6 and quantity are corresponding with the loading blocks 3.During load test, liquid is passed through into pressure chamber by forcing pipe 2
Force feed, hydraulic oil pressurizes to piston 4, and by piston connector by pressure transmission to loading blocks 3.
Embodiment three
As shown in fig. 7, this implementation part unlike the embodiments above is, the piston connector includes piston 4 and connect
First 7, it is provided with connecting rod between the piston 4 and joint 7.The middle part of the one side of loading blocks 3 is provided with link slot 8, and the joint 7 is pacified
Connection is formed in link slot 8.There is gap between the joint 7 and link slot 8, make loading blocks 3 that there is certain activity
Space.The joint 7 is spherical that link slot 8 is ball recess, loading blocks 3 is had certain rotation space simultaneously.It is each to add
Carry block 3 each can independently move on test specimen contact surface, loading unit surface is bonded with surface of test piece, to the equal energy of test specimen each point
Effectively pressure, reduce test error.
Pressure medium in other the present embodiment is compressed air, and the one end of forcing pipe 2 connects with pressure chamber, other end connection
Compressed air line.During load test, compressed air is passed through pressure chamber, air pressure increases in pressure chamber, promotes piston to connect
Fitting, and pressure transmission to loading blocks 3, completion are pressurizeed.Each independent loads of loading blocks 3, and can be with during 3 stress of loading blocks
Rotate or move in certain space around joint 7, so as to reduce the frictional force that test specimen loading surface is subject to, at utmost reduce
The influence of hoop effect.
Example IV
This implementation part unlike the embodiments above is that the line number of the loading blocks 3 is 5~20 rows, and columns is 5~20
Row.The arrangement mode of loading blocks can be designed according to size, the shape of test specimen.
Embodiment five
This implementation part unlike the embodiments above is that the piston hole 6 is provided with liner packing ring, described for adjusting
The size of piston hole 6.Because each point pressure is identical in pressure chamber, when the upper-end contact pressure medium area of piston 4 is bigger, then transmit
Load to loading blocks 3 is bigger, just can be big to the load in the loading blocks 3 so as to answer the size of piston hole 6 by changing
It is small to be adjusted.By being laid out to the size of loading hole 6 on fixed underpan 5, it is possible to achieve to same test specimen diverse location
Carry out load regulation, imitation specimen actual loading situation.
Embodiment six
This implementation part unlike the embodiments above is, is provided with 400 loading blocks on the fixed underpan altogether, loading
The arrangement mode of block is 20 × 20 arrangements.Fixed underpan is provided with piston hole corresponding with loading blocks, the piston hole that left side ten arranges
Size is more than the piston hole size that right side ten arranges.As shown in figure 8, it is the examination using the present embodiment pressure testing machine loading device
Part stressing conditions.
Embodiment seven
This implementation part unlike the embodiments above is, is provided with 81 loading blocks on the fixed underpan altogether, loading
The arrangement mode of block is 9 × 9 arrangements.Fixed underpan is provided with piston hole corresponding with loading blocks, each row piston hole size from
Left-to-right equal difference reduces.As shown in figure 9, it is the test specimen stressing conditions using the present embodiment pressure testing machine loading device.
Embodiment eight
This implementation part unlike the embodiments above is, is provided with 25 loading blocks on the fixed underpan altogether, loading
The arrangement mode of block is 5 × 5 arrangements.
Embodiment nine
This implementation part unlike the embodiments above is, is provided with 225 loading blocks on the fixed underpan altogether, loading
The arrangement mode of block is 15 × 15 arrangements.
Embodiment ten
This implementation part unlike the embodiments above is, is provided with 144 loading blocks on the fixed underpan altogether, loading
The arrangement mode of block is 12 × 12 arrangements.
Preferred embodiment of the present utility model is the foregoing is only, is merely illustrative for the utility model, and
It is nonrestrictive.Those skilled in the art understanding, can be to it in the spirit and scope that the utility model claims are limited
Many changes are carried out, are changed, in addition it is equivalent, but fall within the scope of protection of the utility model.
Claims (10)
1. a kind of pressure testing machine loading device, it is characterised in that including shell and loading unit, the shell and loading unit are
Square, the loading unit is arranged in the shell, and the loading unit includes square fixed underpan and multiple square loading blocks, institute
Loading blocks are stated in criss-cross arrangement on the fixed underpan, and the line number of the loading blocks is equal with columns, adjacent institute
Stating between loading blocks has gap.
2. pressure testing machine loading device as claimed in claim 1, it is characterised in that each loading blocks pass through a piston
Connector is connected with the fixed underpan, and the fixed underpan is provided with the piston hole of multiple insertions, for installing the piston
Connector, the piston hole site sum amount are corresponding with the loading blocks.
3. pressure testing machine loading device as claimed in claim 2, it is characterised in that the piston connector include piston and
Joint, connecting rod is provided between the piston and joint, the piston is arranged in the piston hole, in the loading blocks one side
Portion is provided with link slot, and the joint is arranged in the link slot.
4. pressure testing machine loading device as claimed in claim 3, it is characterised in that between the joint and the link slot
With gap, the loading blocks have activity space.
5. pressure testing machine loading device as claimed in claim 4, it is characterised in that the joint is spherical, the connection
Groove is ball recess, and the loading blocks have rotation space.
6. pressure testing machine loading device as claimed in claim 2, it is characterised in that the piston hole is provided with inner liner
Circle, for adjusting the size of the piston hole.
7. pressure testing machine loading device as claimed in claim 1, it is characterised in that the line number of the loading blocks is 5~20
OK, columns is 5~20 row.
8. pressure testing machine loading device as claimed in claim 7, it is characterised in that the loading unit is shared described in 100
Loading blocks, the arrangement mode of the loading blocks is 10 × 10 arrangements.
9. the pressure testing machine loading device as described in claim 1-8 is any, it is characterised in that the shell and the fixation
Pressure chamber is formed between chassis, the shell side is provided with the forcing pipe connected with the pressure chamber, is passed through in the pressure chamber
Pressure medium.
10. pressure testing machine loading device as claimed in claim 9, it is characterised in that the pressure medium be hydraulic oil or
Compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720537114.9U CN206756575U (en) | 2017-05-16 | 2017-05-16 | A kind of pressure testing machine loading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720537114.9U CN206756575U (en) | 2017-05-16 | 2017-05-16 | A kind of pressure testing machine loading device |
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| Publication Number | Publication Date |
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| CN206756575U true CN206756575U (en) | 2017-12-15 |
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| CN201720537114.9U Active CN206756575U (en) | 2017-05-16 | 2017-05-16 | A kind of pressure testing machine loading device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883844A (en) * | 2019-02-25 | 2019-06-14 | 中国矿业大学 | A kind of small size sample array linear load load case and loading method |
-
2017
- 2017-05-16 CN CN201720537114.9U patent/CN206756575U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883844A (en) * | 2019-02-25 | 2019-06-14 | 中国矿业大学 | A kind of small size sample array linear load load case and loading method |
| CN109883844B (en) * | 2019-02-25 | 2021-07-13 | 中国矿业大学 | Small-size sample array line load loading box and loading method |
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