CN205280475U

CN205280475U - Bolt tensile test fixes frock

Info

Publication number: CN205280475U
Application number: CN201520924285.8U
Authority: CN
Inventors: 王春燕; 胡卫中; 陈正虎; 陈德良; 胡春梅; 纪静; 郭巧慧; 王冬雁
Original assignee: Hebei Huabei Diesel Engine Co Ltd
Current assignee: Hebei Huabei Diesel Engine Co Ltd
Priority date: 2015-11-19
Filing date: 2015-11-19
Publication date: 2016-06-01
Anticipated expiration: 2025-11-19

Abstract

The utility model discloses a bolt tensile test fixes frock belongs to bolt tensile test field, include last pull head that blocks the bolt head and the lower pull head of being connected with the shank of bolt cooperation of bolt, the overhead through -hole that blocks the bolt head of seting up of pull -up, the shank of bolt that the through -hole is greater than the bolt is lighter than the bolt head, and the overhead end of pull -up is used for the last pull rod of fastening on tensile testing machine through threaded connection no. 1, and the shank of bolt matched with internal thread hole with the bolt is offered to drop -down overhead end, and lower pull head lower extreme is used for the lower link of fastening on tensile testing machine through the groove connection no. 1 of T type. The utility model discloses lightly small and exquisite, be liable to change divides the design of body structure to avoid damaging the waste that the thorough change in back brought.

Description

Bolt tension test fixing tool

Technical field

The utility model relates to bolt tension test field, especially a kind of bolt tension test fixing tool, the device of standing bolt in trying for bolt tension.

Background technology

Often need to use tension testing machine in bolt tension force is tested, V-type fixture and lower V-type fixture on being provided with on tension testing machine, need to be arranged on bolt in a frock when test bolt is carried out tension test, frock is often divided into upper and lower two portions, the upper part of frock is used for the head of standing bolt, and the outside screw that the lower part of frock is used for end lower to bolt realizes being connected. When bolt is carried out tension test, two portions up and down of frock are realized clamping by upper V-type fixture and lower V-type fixture, by tension frock thus realize bolt is applied specific pulling force, change bolt after test and continue to test. Need to disassemble frock when changing bolt, frock of the prior art is heavier, installation and removal are wasted time and energy and need two people just can complete, bolt tension test efficiency is lower, the internal thread that the outside screw of the end lower to bolt simultaneously arranged in the lower part of frock matches causes consume serious due to operation under being in bigger pulling force for a long time, thoroughly changes frequently and also adds cost to tension test.

Practical novel content

The utility model technical issues that need to address are to provide a kind of bolt tension test fixing tool, light small and exquisite, are easy to change, and the design of split structure avoids after damaging and thoroughly changes the waste brought.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:

Bolt tension test fixing tool, comprise the pull-up head blocked by bolt head and drop-down head that the shank of bolt with bolt is connected, described pull-up head offers the through hole blocking bolt head, the shank of bolt that described through hole is greater than bolt is less than bolt head, pull-up head upper end is threaded connection a upper pull bar for being fastened on tension testing machine, the internal thread hole that the shank of bolt with bolt matches is offered in drop-down head upper end, and drop-down lower end connects a lower link for being fastened on tension testing machine by T-slot.

The further improvement of technical solutions of the utility model is: described pull-up head is the cylinder that circular through hole is offered in bottom, and cylinder inner wall is provided with internal thread, and upper tie rod end is provided with the outside screw that the internal thread with cylinder inner wall matches.

The further improvement of technical solutions of the utility model is: described drop-down head is rectangular structure, and drop-down head upper end is provided with the internal thread hole that the threaded rod with bolt matches, lower end is provided with T-slot, and lower link end is provided with the T-shaped head coordinated with T-slot.

Owing to have employed technique scheme, the technical progress that the utility model obtains is:

Bolt tension test fixing tool comprises bolt two ends securing pull-up head and drop-down head respectively, pull-up head is fixedly connected with tension testing machine by pull-up head by a upper pull bar, drop-down head is fixedly connected with tension testing machine by drop-down head by a lower link, pull-up head or drop-down head can directly change pull-up head after damaging or drop-down head can continue to use, and thoroughly change the waste that lock strap is come after avoiding damage.

Drop-down lower end is provided with T-slot and is connected with lower link, and this kind of mode of connection is dismounting or installs all very convenient and quick, decreases the time that replacing is wasted. Drop-down head is designed to rectangular structure, facilitates the manufacture of T-slot.

Lower link is fixedly connected with tension testing machine, drop-down head is connected with lower link by T-slot, drop-down head can be free to slide along T-slot relative to lower link, just brings great convenience for looking for of bolt, it is ensured that the pulling force direction that the center axis of bolt applies with tension testing machine overlaps completely.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model pull-up header structure schematic diagram;

Fig. 3 is the drop-down header structure schematic diagram of the utility model;

Wherein, 1, bolt, 2, pull-up head, 3, drop-down head, 4, through hole, 5, upper pull bar, 6, T-slot, 7, lower link, 8, T-shaped head.

Embodiment

Below in conjunction with embodiment, the utility model is described in further details:

As shown in Figure 1, the utility model comprises the pull-up 2 of split and drop-down 3, pull-up 2 comprises a cylinder, bottom of cylinder offers circular through hole 4, the shank of bolt diameter that through hole 4 diameter is greater than bolt 1 is less than in bolt head to connect circular diameter, the shank of bolt of bolt 1 is by through hole 4, and the bolt head of bolt 1 is not by through hole 4, and therefore bolt 1 is stuck in pull-up 2. The cylinder inner wall of pull-up 2 is provided with internal thread, upper pull bar 5 comprises for column structure, upper pull bar 5 end is provided with the outside screw that the internal thread with the cylinder inner wall pulling up 2 matches, upper pull bar 5 is with externally threaded one end to be connected with pull-up 2 spiral, and upper pull bar 5 the other end is fixedly connected with tension testing machine. Drop-down 3 is rectangular structure, and drop-down 3 upper ends are provided with and the internal thread hole that bolt 1 matches, and drop-down 3 times ends are provided with T-slot 6, and lower link 7 is square column structure, and the square column end of lower link 7 is provided with and T-shaped 8. Being provided with internal thread one end for drop-down 3 to be connected with bolt 1 spiral, the other end is connected with lower link 7 by T-slot 6, and T-slot 6 is dismounting with T-shaped 8 mode of connection matched or installs all very convenient and quick, decreases the time that replacing is wasted. Bolt tension test fixing tool comprises the bolt 1 two ends securing pull-up 2 of difference and drop-down 3, split structure is all adopted between pull-up between 2 and upper pull bar 5, drop-down 3 and lower link 7, pull-up 2 or drop-down 3 can directly change pull-up 2 after damaging or drop-down 3 can continue to use, avoid thoroughly changing after damaging the waste that lock strap is come.

Claims

1. bolt tension test fixing tool, it is characterized in that: comprise the pull-up head (2) blocked by bolt (1) head and drop-down head (3) that the shank of bolt with bolt (1) is connected, described pull-up head (2) is offered the through hole (4) blocking bolt (1) head, the shank of bolt that described through hole (4) is greater than bolt (1) is less than bolt head, pull-up head (2) upper end is threaded connection a upper pull bar (5) for being fastened on tension testing machine, the internal thread hole that the shank of bolt with bolt (1) matches is offered in drop-down head (3) upper end, drop-down head (3) lower end connects a lower link (7) for being fastened on tension testing machine by T-slot (6).

2. bolt tension according to claim 1 test fixing tool, it is characterized in that: described pull-up head (2) is for offering the cylinder of circular through hole (4) in bottom, cylinder inner wall is provided with internal thread, and upper pull bar (5) end is provided with the outside screw that the internal thread with cylinder inner wall matches.

3. bolt tension according to claim 1 test fixing tool, it is characterized in that: described drop-down head (3) is rectangular structure, drop-down head (3) upper end is provided with the internal thread hole that the threaded rod with bolt (1) matches, lower end is provided with T-slot (6), and lower link (7) end is provided with the T-shaped head (8) coordinated with T-slot (6).