CN218865644U - Bolt combination tensile test frock - Google Patents
Bolt combination tensile test frock Download PDFInfo
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- CN218865644U CN218865644U CN202222911104.0U CN202222911104U CN218865644U CN 218865644 U CN218865644 U CN 218865644U CN 202222911104 U CN202222911104 U CN 202222911104U CN 218865644 U CN218865644 U CN 218865644U
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- pull head
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- tensile test
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Abstract
The utility model discloses a bolt combination tensile test tool, which belongs to the technical field of bolt tensile test; the method comprises the following steps: go up the pull head, lower pull head, be provided with the through hole in the pull head, the through hole top is arranged in to the pull rod spiro union, the shifting chute has been seted up in the pull head, the direction of shifting chute is perpendicular with the direction of through hole, the stopper is inserted and is arranged in the shifting chute, stopper and shifting chute cooperation form sliding structure, the lead screw runs through pull head lateral wall and inserts and arrange in the shifting chute, the lead screw rotates to be connected and arranges in on the stopper, and lead screw and pull head lateral wall cooperation form linear movement structure, the lead screw tip is provided with the connecting block, need not to dismantle pull head when changing the bolt, can protect pull head, prevent the thread damage of pull head, the step of bolt change has been simplified, the efficiency of change is improved, high durability and convenient use, and easy operation.
Description
Technical Field
The utility model relates to a bolt combination tensile test frock belongs to bolt tensile test technical field.
Background
Tensile test refers to a test method for measuring the properties of a material under an axial tensile load. The data obtained by the tensile test can be used for determining the elastic limit, the elongation, the elastic modulus, the proportion limit, the area reduction, the tensile strength, the yield point, the yield strength and other tensile performance indexes of the material, when the tensile test is carried out, the bolt is required to be installed in a tool, the tool is often divided into an upper part and a lower part, the upper part of the tool is used for fixing the head of the bolt, the lower part of the tool is used for realizing connection with the external thread at the lower end of the bolt, go up V type anchor clamps and V type anchor clamps down when carrying out tensile test to the bolt and realize pressing from both sides tightly to the upper and lower two parts of frock, thereby realize exerting specific pulling force to the bolt through taut frock, it is experimental to change the bolt and continue the experiment after accomplishing, this structure needs frequent when leading to changing the bolt to dismantle the anchor clamps of upper portion, causes the anchor clamps screw thread damage of upper portion, needs the anchor clamps of frequent more upper portion, it is loaded down with trivial details to change the bolt process simultaneously, inefficiency.
Publication No. CN205280475U discloses fixed frock of bolt tensile test belongs to bolt tensile test field, include the last pull head that blocks the bolt head and the lower pull head of being connected with the bolt shank cooperation of bolt, set up the through-hole that blocks the bolt head on the last pull head, the bolt shank that the through-hole is greater than the bolt is less than the bolt head, goes up the pull head upper end and is used for the last pull rod of fastening on tensile testing machine through threaded connection one, and the internal thread hole with the bolt shank matched with of bolt is seted up to the lower pull head upper end, and a lower pull rod that is used for fastening on tensile testing machine is connected through T type groove to the lower pull head lower extreme. The utility model discloses lightly small and exquisite, easily change, the design of components of a whole that can function independently structure has avoided damaging the waste that the back thoroughly changed and brought, but need frequent when not solving the change bolt dismantle the anchor clamps of top, cause the anchor clamps screw thread of top to damage, need frequently to change the anchor clamps of top, it is loaded down with trivial details, the problem of inefficiency to change the bolt process simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of bolt combination tensile test frock can solve and need frequent when changing the bolt to dismantle the anchor clamps of upper portion, causes the anchor clamps screw thread damage of upper portion, needs the anchor clamps of frequent more upper portion of changing, and it is loaded down with trivial details, the problem of inefficiency to change the bolt process simultaneously.
The utility model discloses a solve above-mentioned problem, the technical scheme that provides is a bolt combination tensile test frock includes: the upper pull head is internally provided with a through hole, the upper pull rod is in threaded connection with the top of the through hole, a moving groove is formed in the upper pull head, the direction of the moving groove is perpendicular to that of the through hole, a limiting block is inserted into the moving groove, the limiting block and the moving groove are matched to form a sliding structure, a screw rod penetrates through the side wall of the upper pull head and is inserted into the moving groove, the screw rod is rotatably connected with the limiting block, the screw rod and the side wall of the upper pull head are matched to form a linear moving structure, the end part of the screw rod is provided with a connecting block, the top of the connecting block is provided with a vertically upward rotating rod, the two groups of limiting blocks are symmetrically arranged on the basis of the through hole, one side, close to the through hole, of the limiting block is provided with a supporting plate, the edge of the supporting plate is provided with a limiting groove, the two groups of limiting blocks are mutually pressed, the top of the two groups of limiting grooves are formed into a round hole, the top of a bolt penetrates through groove, the bottom of the bolt is in threaded connection with the top of the lower pull head, and the lower pull rod is arranged at the bottom of the lower pull head in threaded connection;
the diameter of the rod part of the bolt is smaller than the inner diameter of the limiting groove, and the length of the head part of the bolt is larger than the inner diameter of the limiting groove;
the part of the limiting block inserted in the moving groove is larger than the part of the limiting block positioned in the through hole;
the bolt is positioned under the upper pull rod, and the upper pull rod and the lower pull rod are coaxial;
a gap is reserved between the upper pull rod and the top of the bolt;
the inner diameter of the through hole is at least twice the length of the top of the bolt.
The utility model has the advantages that:
1. when the bolt is replaced, the upper pull head is not required to be disassembled, so that the upper pull head can be protected, and the thread of the upper pull head is prevented from being damaged;
2. the steps of replacing the bolts are simplified, and the replacing efficiency is improved;
3. convenient to use, easy operation.
Drawings
Fig. 1 is the utility model relates to a bolt combination tensile test frock's schematic structure diagram.
Fig. 2 is the utility model relates to a top view of bolt combination tensile test frock stopper.
Fig. 3 is a schematic structural view of the upper pull head of the bolt combination tensile test tool of the utility model.
1. An upper pull rod; 2. pulling the head; 3. rotating the rod; 4. a screw rod; 5. a limiting block; 6. a bolt; 7. a lower slider; 8. a lower pull rod; 9. a moving groove; 10. a support plate; 11. a limiting groove; 12. a through hole; 13. and (4) connecting the blocks.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
It should be noted that as used in the following description, the terms "front", "back", "left", "right", "upper" and "lower" refer to directions in fig. 1, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
According to the illustrations of FIGS. 1-3: the utility model provides a 6 combination tensile test frocks of bolt include: the upper pull head 2 and the lower pull head 7 are provided with through holes 12, external threads arranged at the end parts of the upper pull rod 1 are matched with internal threads at the tops of the through holes 12 to form a fixed structure, moving grooves 9 are formed in the upper pull head 2, the directions of the moving grooves 9 are perpendicular to the directions of the through holes 12, the limiting blocks 5 are inserted in the moving grooves 9, the limiting blocks 5 are matched with the moving grooves 9 to form a sliding structure, the lead screw 4 penetrates through the side wall of the upper pull head 2 and is inserted in the moving grooves 9, the lead screw 4 is rotatably connected and arranged on the limiting blocks 5, the lead screw 4 is matched with the side wall of the upper pull head 2 to form a linear moving structure, the end parts of the lead screw 4 are provided with connecting blocks 13, the tops of the connecting blocks 13 are provided with vertically upward rotating rods 3, the rotating rods 3 are used for driving the limiting blocks 5 to move in the moving grooves 9, the bolts 6 are fixed through the supporting plates 10, the two groups of limiting blocks 5 are symmetrically arranged on the basis of the through holes 12, one sides of the limiting blocks 5 close to the through holes 12 are provided with the supporting plates 10, the edges of the supporting plates 10, the two groups of the limiting blocks 5 are pressed against each other, the two groups of the limiting blocks 11, the lower pull head 7 are arranged on the tops of the supporting plates, the bottom of the lower pull head, the lower pull head 7, and the internal threads of the lower pull head 7 are matched with the internal threads of the lower pull head 8, and the lower pull head 7, and the lower pull head, the lower pull head 7;
the diameter of the rod part of the bolt 6 is smaller than the inner diameter of the limiting groove 11, and the length of the head part of the bolt 6 is larger than the inner diameter of the limiting groove 11, so that the bolt 6 is clamped in the upper pull head 2;
the part of the limiting block 5 inserted in the moving groove 9 is larger than the part of the limiting block 5 positioned in the through hole 12, so that most of the limiting block 5 is retained in the moving groove 9 to support the bolt 6;
the bolt 6 is positioned right below the upper pull rod 1, and the upper pull rod 1 and the lower pull rod 8 are coaxial, so that the central axis of the bolt 6 is completely coincided with the direction of the tensile force applied by the tensile testing machine;
a gap is reserved between the upper pull rod 1 and the top of the bolt 6, so that the upper pull rod 1 is prevented from touching the bolt 6 and the connection between the upper pull rod 1 and the upper pull head 2 is prevented;
the inner diameter of the through hole 12 is at least twice of the length of the top of the bolt 6, so that the installation is convenient.
The principle of the utility model is as follows: when the bolt 6 is used, the bottom of the bolt 6 is in threaded connection with the lower pull head 7, the lower pull rod 8 is in threaded connection with the lower pull head 7, the rotating rod 3 is rotated, the screw rod 4 is rotated, the limiting block 5 is driven to move towards two sides, the top of the bolt 6 extends into the through hole 12, the head of the bolt 6 is located above the supporting plate 10, the rotating rod 3 is rotated, the limiting block 5 moves towards the middle until the limiting blocks 5 on two sides are attached, the rod part of the bolt 6 is located in the limiting groove 11, the upper pull rod 1 is in threaded connection with the top of the upper pull head 2, the upper pull rod 1 and the lower pull rod 8 simultaneously stretch the bolt 6, the bottom of the bolt 6 is fixed with the lower pull head 7, the head of the bolt 6 is blocked by the supporting plate 10, therefore, a stretching test can be performed on the bolt 6, when the bolt 6 needs to be replaced, the rotating rod 3 is rotated, the screw rod 4 is rotated, the limiting block 5 is driven to move towards two sides, the head of the bolt 6 falls from the upper pull head 2, the lower pull head can be detached, the bolt 6 can be replaced from the lower pull head 7, the bolt 6 can be replaced, the replacement efficiency can be improved, and the replacement efficiency of the bolt 6 can be improved.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (6)
1. The utility model provides a bolt combination tensile test frock which characterized in that: comprises an upper pull head (2) and a lower pull head (7), wherein a through hole (12) is arranged in the upper pull head (2), an upper pull rod (1) is arranged at the top of the through hole (12) in a threaded manner, a moving groove (9) is arranged in the upper pull head (2), the direction of the moving groove (9) is vertical to the direction of the through hole (12), a limiting block (5) is inserted in the moving groove (9), the limiting block (5) and the moving groove (9) are matched to form a sliding structure, a screw rod (4) penetrates through the side wall of the upper pull head (2) and is inserted in the moving groove (9), the screw rod (4) is rotatably connected and arranged on the limiting block (5), and the screw rod (4) and the side wall of the upper pull head (2) are matched to form a linear moving structure, the end part of the screw rod (4) is provided with a connecting block (13), the top of the connecting block (13) is provided with a vertically upward rotating rod (3), the two groups of limit blocks (5) are symmetrically arranged based on a through hole (12), one side of each limit block (5) close to the through hole (12) is provided with a support plate (10), the edge of each support plate (10) is provided with a limit groove (11), the two groups of limit blocks (5) are mutually pressed against each other, the two groups of limit grooves (11) form a round hole, the top of a bolt (6) is arranged at the top of the support plate (10), the rod part of the bolt (6) passes through the limit groove (11), the bottom of the bolt (6) is in threaded connection with the top of the lower pull head (7), and the lower pull rod (8) is in threaded connection with the bottom of the lower pull head (7).
2. The bolt combination tensile test tool according to claim 1, characterized in that: the diameter of the rod part of the bolt (6) is smaller than the inner diameter of the limiting groove (11), and the length of the head part of the bolt (6) is larger than the inner diameter of the limiting groove (11).
3. The bolt combination tensile test tool according to claim 1, characterized in that: the part of the limiting block (5) inserted in the moving groove (9) is larger than the part of the limiting block (5) positioned in the through hole (12).
4. The bolt combination tensile test tool according to claim 1, characterized in that: the bolt (6) is positioned under the upper pull rod (1), and the upper pull rod (1) and the lower pull rod (8) are coaxial.
5. The bolt combination tensile test tool according to claim 1, characterized in that: a gap is reserved between the top of the upper pull rod (1) and the top of the bolt (6).
6. The bolt combination tensile test tool according to claim 1, characterized in that: the inner diameter of the through hole (12) is at least twice the length of the top of the bolt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222911104.0U CN218865644U (en) | 2022-11-02 | 2022-11-02 | Bolt combination tensile test frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222911104.0U CN218865644U (en) | 2022-11-02 | 2022-11-02 | Bolt combination tensile test frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218865644U true CN218865644U (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222911104.0U Active CN218865644U (en) | 2022-11-02 | 2022-11-02 | Bolt combination tensile test frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218865644U (en) |
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2022
- 2022-11-02 CN CN202222911104.0U patent/CN218865644U/en active Active
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