CN211122387U - Cable material wear-resisting test tool - Google Patents
Cable material wear-resisting test tool Download PDFInfo
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- CN211122387U CN211122387U CN201921824081.1U CN201921824081U CN211122387U CN 211122387 U CN211122387 U CN 211122387U CN 201921824081 U CN201921824081 U CN 201921824081U CN 211122387 U CN211122387 U CN 211122387U
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Abstract
The utility model provides a cable material wear-resisting test frock, its structure is: a through hole is arranged on the test bed; the mill is installed in the test bench below, and the sample is laid the device and is installed in the test bench top. The structure of the sample clamping device is as follows: the shell is a hollow shell with an opening at the bottom surface; the open end of the shell is detachably connected to the through hole of the test bed from top to bottom; the top surface of the first wedge block is an inclined surface, and the bottom surface of the second wedge block is an inclined surface; a strip-shaped hole is formed in the top of the shell, and a bolt penetrates through the strip-shaped hole and is screwed in a counter bolt hole in the horizontal top surface of the second wedge block; a through hole is formed in the side wall of the shell, and the first end of the horizontal ejector rod penetrates through the through hole in the side wall and is connected to the side wall of the second wedge block; the horizontal bottom surface of the first wedge block is connected with a clamp for clamping a sample; the structure of the sample feeding device is as follows: the eccentric wheel is connected to the output shaft of the stepping motor; an output shaft of the stepping motor is vertical to the horizontal ejector rod; the side wall of the eccentric wheel props against the end plate of the horizontal mandril. This experimental frock helps reducing the experimental degree of difficulty, improves test efficiency.
Description
Technical Field
The utility model belongs to the technical field of the cable material testing, specifically a cable material wear-resisting test frock.
Background
In the prior art, the production of cable materials (such as insulating materials, sheathing materials and the like) is to carry out a series of physical and chemical changes on raw materials of each component through a series of processes to finally obtain stable granular materials, and then the granular materials are provided for a cable production field to carry out plasticization, extrusion and the like to finally obtain a functional layer required by the cable.
In the production stage of the cable material, physical and chemical properties of each batch of the cable material need to be detected, and then the formula and the production process are adjusted and cured (sample sealing), and then mass production is carried out. The wear resistance of the cable material is an important mechanical property index. In the production stage of the cable material, plasticizing and extruding a trial-produced particle material to obtain a rod-shaped sample, and then testing the rod-shaped sample by using a wear machine. The abrasion machine is characterized in that a sample is placed on a grinding disc and is stabilized, then the grinding disc is used for abrading the bottom end face of the sample, and finally the number of turns of the grinding disc in unit time and the abrasion size of the sample are recorded. In the test process, the sample is pressed on the grinding disc according to the self gravity, and in the test calculation formula, the reduction of the gravity is a parameter to be considered, so that the difficulty of calculating the model is increased, and the accuracy of the test result is directly influenced.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model improves the standard abrasion machine, and provides a new cable material abrasion resistance test tool, which comprises a test bed, a grinding disc and a sample placing device; the grinding disc is driven by a motor;
a through hole for the sample to pass through is arranged on the test bed; the grinding disc is arranged below the test bed, and the sample placing device is arranged above the test bed;
the sample placing device comprises a sample clamping device and a sample feeding device;
A. the sample clamping device comprises a shell, a first wedge block, a second wedge block and a horizontal ejector rod;
the shell is a hollow shell with an opening at the bottom surface; the open end of the shell is detachably connected to the through hole of the test bed from top to bottom;
the top surface of the first wedge block is an inclined surface, the bottom surface of the second wedge block is an inclined surface, and the inclined surfaces of the first wedge block and the second wedge block are in sliding fit; the second wedge block and the first wedge block are arranged in the shell in an up-down mode;
a strip-shaped hole is formed in the top of the shell, and a bolt penetrates through the strip-shaped hole and is screwed in a counter bolt hole in the horizontal top surface of the second wedge block; a through hole is formed in the side wall of the shell, the first end of the horizontal ejector rod penetrates through the through hole in the side wall and is connected to the side wall of the second wedge block, and the second end of the horizontal ejector rod is connected with an end plate; the length direction of the strip-shaped holes is consistent with that of the horizontal flat top rods;
the horizontal bottom surface of the first wedge block is connected with a clamp for clamping a sample;
B. the sample feeding device comprises a stepping motor and an eccentric wheel; the eccentric wheel is connected to the output shaft of the stepping motor; the stepping motor is connected to the experiment table, and an output shaft of the stepping motor is vertical to the horizontal ejector rod; the side wall of the eccentric wheel props against the end plate of the horizontal mandril.
As an improvement, the clamp on the bottom surface of the first wedge block is of a barrel structure, a screw hole is formed in the side wall of the barrel, and a fastening screw is screwed in the screw hole.
Furthermore, the first end of the horizontal ejector rod is provided with external threads, the side wall of the second wedge block is provided with a sunk screw hole, and the first end of the horizontal ejector rod is screwed into the sunk screw hole.
And a film pressure sensor is stuck on the surface of the end plate.
When in use: clamping a sample by using a clamp of a first wedge block, and enabling the sample to pass through a through hole on a test bed and fall on the top surface of a grinding disc freely;
then covering the shell on the first wedge block, adjusting the position of a bolt at the top of the second wedge block to enable the inclined surfaces of the two wedge blocks to be matched, and meanwhile, the bottom surface of the shell can be stably connected on a test bed;
and then, under the condition of no power supply, rotating an eccentric wheel connected with the stepping motor to abut against an end plate of the horizontal ejector rod (adjusting the depth of the horizontal ejector rod screwed into the second wedge block), and then completing the test preparation.
The second wedge block is pushed through the action of the stepping motor, so that the first wedge block is pressed downwards to provide external pressure for the sample. Because the density of the cable material is not large, compared with the weight of the metal wedge block and the pressure of the rotating self-stepping motor, the weight of the cable material is small and can be ignored in the experimental calculation model.
Through this frock, still can realize experimental weighing, improve test efficiency.
The membrane pressure sensor can derive the pressure from the stepper motor, which can be used as a parameter for the test weighting.
This experimental frock helps reducing the experimental degree of difficulty, improves test efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the wear test fixture;
FIG. 2 is a schematic view of the structure of the sample placement device;
in the figure: the test bench comprises a test bench 1, a grinding disc 2, a through hole 3 on the test bench, a sample clamping device 4, a sample feeding device 5, a shell 6, a first wedge block 7, a second wedge block 8, a horizontal ejector rod 9, a strip-shaped hole 10 in the top of the shell, a bolt 11, an end plate 11, a motor 12 for driving the grinding disc, a film pressure sensor 13, a clamp 14 on the bottom surface of the first wedge block, a fastening screw 15, a stepping motor 16, an eccentric wheel 17 and a sample 18.
Detailed Description
The present disclosure is further described with reference to the following drawings and detailed description:
referring to fig. 1, a cable material wear-resistance test tool comprises a test bed, a grinding disc and a sample placing device; the grinding disc is driven by a motor (in actual operation, a speed change mechanism, such as a gear box or a belt wheel transmission structure, is also connected between the motor and the grinding disc); a through hole for the sample to pass through is arranged on the test bed; the mill is installed in the test bench below, and the sample is laid the device and is installed in the test bench top. In this example, the sample placement device includes a sample holding device and a sample feeding device;
this example is illustrated in FIG. 2:
A. the sample clamping device comprises a shell, a first wedge block, a second wedge block and a horizontal ejector rod;
the shell is a hollow shell with an opening at the bottom surface; the open end of the shell is detachably connected to the through hole of the test bed from top to bottom;
the top surface of the first wedge block is an inclined surface, the bottom surface of the second wedge block is an inclined surface, and the inclined surfaces of the first wedge block and the second wedge block are in sliding fit; the second wedge block and the first wedge block are arranged in the shell in an up-down mode;
a strip-shaped hole is formed in the top of the shell, and a bolt penetrates through the strip-shaped hole and is screwed in a counter bolt hole in the horizontal top surface of the second wedge block; a through hole is formed in the side wall of the shell, the first end of the horizontal ejector rod penetrates through the through hole in the side wall and is connected to the side wall of the second wedge block, and the second end of the horizontal ejector rod is connected with an end plate; the length direction of the strip-shaped holes is consistent with that of the horizontal flat top rods;
the horizontal bottom surface of the first wedge block is connected with a clamp for clamping a sample;
B. the sample feeding device comprises a stepping motor and an eccentric wheel; the eccentric wheel is connected to the output shaft of the stepping motor; the stepping motor is connected to the experiment table, and an output shaft of the stepping motor is vertical to the horizontal ejector rod; the side wall of the eccentric wheel props against the end plate of the horizontal mandril.
The clamp on the bottom surface of the first wedge block is of a barrel structure, a screw hole is formed in the side wall of the barrel, and a fastening screw is screwed in the screw hole.
The first end of the horizontal ejector rod is provided with external threads, the side wall of the second wedge block is provided with a sunk screw hole, and the first end of the horizontal ejector rod is screwed into the sunk screw hole.
And a film pressure sensor is stuck on the surface of the end plate.
Claims (4)
1. A cable material wear-resistant test tool comprises a test bed, a grinding disc and a sample placing device; the grinding disc is driven by a motor; a through hole for the sample to pass through is arranged on the test bed; the grinding disc is arranged below the test bed, and the sample placing device is arranged above the test bed and is characterized by comprising a sample clamping device and a sample feeding device;
A. the sample clamping device comprises a shell, a first wedge block, a second wedge block and a horizontal ejector rod;
the shell is a hollow shell with an opening at the bottom surface; the open end of the shell is detachably connected to the through hole of the test bed from top to bottom;
the top surface of the first wedge block is an inclined surface, the bottom surface of the second wedge block is an inclined surface, and the inclined surfaces of the first wedge block and the second wedge block are in sliding fit; the second wedge block and the first wedge block are arranged in the shell in an up-down mode;
a strip-shaped hole is formed in the top of the shell, and a bolt penetrates through the strip-shaped hole and is screwed in a counter bolt hole in the horizontal top surface of the second wedge block; a through hole is formed in the side wall of the shell, the first end of the horizontal ejector rod penetrates through the through hole in the side wall and is connected to the side wall of the second wedge block, and the second end of the horizontal ejector rod is connected with an end plate; the length direction of the strip-shaped holes is consistent with that of the horizontal flat top rods;
the horizontal bottom surface of the first wedge block is connected with a clamp for clamping a sample;
B. the sample feeding device comprises a stepping motor and an eccentric wheel; the eccentric wheel is connected to the output shaft of the stepping motor; the stepping motor is connected to the experiment table, and an output shaft of the stepping motor is vertical to the horizontal ejector rod; the side wall of the eccentric wheel props against the end plate of the horizontal mandril.
2. The cable material wear-resistance test tool according to claim 1, wherein the clamp on the bottom surface of the first wedge block is of a barrel structure, a screw hole is formed in the side wall of the barrel, and a fastening screw is screwed in the screw hole.
3. The cable material wear-resistance test tool according to claim 1, wherein the first end of the horizontal ejector rod is provided with an external thread, the side wall of the second wedge block is provided with a countersunk screw hole, and the first end of the horizontal ejector rod is screwed into the countersunk screw hole.
4. The cable material wear-resistance test tool according to claim 1, wherein a film pressure sensor is attached to the surface of the end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921824081.1U CN211122387U (en) | 2019-10-28 | 2019-10-28 | Cable material wear-resisting test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921824081.1U CN211122387U (en) | 2019-10-28 | 2019-10-28 | Cable material wear-resisting test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211122387U true CN211122387U (en) | 2020-07-28 |
Family
ID=71701180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921824081.1U Active CN211122387U (en) | 2019-10-28 | 2019-10-28 | Cable material wear-resisting test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211122387U (en) |
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2019
- 2019-10-28 CN CN201921824081.1U patent/CN211122387U/en active Active
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