CN214668218U

CN214668218U - Ductility experiment machine

Info

Publication number: CN214668218U
Application number: CN202120955548.7U
Authority: CN
Inventors: 邱颖峰; 刘威; 陶天培
Original assignee: Shanghai Municipal Highway Engineering Testing Co ltd
Current assignee: Shanghai Municipal Highway Engineering Testing Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-11-09
Anticipated expiration: 2031-05-07

Abstract

The utility model relates to an extensibility experiment machine, which comprises a frame, the frame upper end has set firmly the supporting beam, it is equipped with the supporting beam down to go up the supporting beam below, the frame is equipped with the elevating gear that the supporting beam goes up and down to drive, it all is equipped with clamping device to go up the supporting beam and the one side that the supporting beam is close to each other down, clamping device includes the fixed plate, limiting plate and fly leaf, the fixed plate has set firmly two spacing axles, the fly leaf both ends respectively with two spacing axle sliding connection, the limiting plate deviates from the one end fixed connection of fixed plate with spacing axle, limiting plate threaded connection has spacing bolt, spacing bolt pierces through the limiting plate and contradicts with the fly leaf. The user puts into the sample tip between fixed plate and the fly leaf, rotates spacing bolt, and spacing bolt top moves the fly leaf and removes to the fixed plate, and then makes fly leaf and fixed plate cooperation press from both sides the sample tip tightly, and this application need not carry out the winding of many rings to the sample, has improved the fixed effect to the sample.

Description

Ductility experiment machine

Technical Field

The application relates to the field of material testing equipment, in particular to a ductility testing machine.

Background

At present, many materials need to be subjected to a tensile test to test the tensile strength of the material so as to judge whether the material meets the specified standard.

The related art can refer to chinese patent with publication number CN207456949U and discloses a steel wire rope's tensile testing machine, including the stretcher, be fixed with the base in the frame of stretcher, be equipped with down the holding head directly over the base, it is fixed with the frame through the lift post to go up the top of holding head, place the steel wire rope that awaits measuring between the holding head, steel wire rope is close to holding head department and has pasted a reflection paster respectively, this reflection paster reflects the laser ray of low-energy, the front side of stretcher is provided with laser measuring apparatu, after laser emission port transmitted the laser through transmitting the paster with laser reflection to the receiving terminal.

In view of the above-mentioned related art, the inventor believes that, when the tensile testing machine is used for installing a sample, two ends of the sample need to be wound on the upper clamping head and the lower clamping head respectively, and in order to ensure the fixing effect, the sample needs to be wound for multiple turns, and the fixing effect is poor for a part of materials with high rigidity and insusceptibility to bending.

SUMMERY OF THE UTILITY MODEL

In order to improve the fixed effect to the sample, this application provides a ductility experiment machine.

The application provides a ductility experiment machine, adopts following technical scheme:

the utility model provides an extensibility experimental machine, which comprises a frame, the frame upper end has set firmly the supporting beam, go up the supporting beam below and be equipped with a supporting beam down, the frame is equipped with the elevating gear that the supporting beam goes up and down, one side that last supporting beam and supporting beam are close to each other all is equipped with clamping device, clamping device includes fixed plate, limiting plate and fly leaf, the fixed plate has set firmly two spacing axles, the fly leaf both ends respectively with two spacing axle sliding connection, the limiting plate deviates from the one end fixed connection of fixed plate with spacing axle, limiting plate threaded connection has spacing bolt, spacing bolt pierces through the limiting plate and contradicts with the fly leaf.

Through adopting above-mentioned technical scheme, the user puts into the sample tip between fixed plate and the fly leaf, rotates spacing bolt, and spacing bolt top moves the fly leaf and removes to the fixed plate, and then makes fly leaf and fixed plate cooperation press from both sides the sample tip tightly, need not carry out the winding of many circles to the sample, has improved the fixed effect to the sample.

Optionally, one side of the movable plate and one side of the fixed plate, which are close to each other, are fixedly provided with toothed protrusions which are matched with each other.

Through adopting above-mentioned technical scheme, dentate arch effectively increases the frictional force between sample and fixed plate and the fly leaf, has improved the fixed effect to the sample.

Optionally, the limiting shafts are all sleeved with return springs, the return springs are located between the movable plate and the fixed plate, and the movable plate is far away from the fixed plate in a natural state of the return springs.

Through adopting above-mentioned technical scheme, after detecting, reset spring's elasticity reaction makes the fly leaf automatic keep away from the fixed plate, and the person of being convenient for takes out the sample, has improved the convenience of use.

Optionally, the rack is fixedly provided with a vertical scale, the lower support beam is fixedly provided with a vernier, and the vernier is connected with the scale in a sliding manner.

Through adopting above-mentioned technical scheme, the lower supporting beam drives the vernier and reciprocates on the scale, and the tensile length of convenient to use person observation test has improved the convenience of use.

Optionally, the lifting device comprises a threaded rod and a guide rod, the threaded rod and the guide rod are arranged vertically, the threaded rod is connected with the frame in a rotating mode, the guide rod is fixedly connected with the frame, one end of the lower supporting beam in the length direction is connected with the threaded rod in a threaded mode, the other end of the lower supporting beam is connected with the guide rod in a sliding mode, and the threaded rod is fixedly connected with a driving motor in a coaxial mode.

Through adopting above-mentioned technical scheme, driving motor drives the threaded rod and rotates, drives the lower supporting beam up-and-down motion under the limiting displacement of guide bar, and then adjusts the interval of upper supporting beam and lower supporting beam, detects the sample, and simple structure control is convenient.

Optionally, one end of the limiting bolt, which is away from the movable plate, is slidably connected with a manual operating rod, and the manual operating rod is perpendicular to the limiting bolt.

Through adopting above-mentioned technical scheme, the user utilizes lever principle to control spacing bolt rotation through the manual control pole, and is comparatively laborsaving.

Optionally, the upper supporting beam and the lower supporting beam are close to each other, so that a first connecting shaft is fixedly arranged, the first connecting shaft is slidably connected with a clamping block, the fixing plate is fixedly provided with a second connecting shaft, the first connecting shaft is provided with a groove matched with the second connecting shaft, and the second connecting shaft is provided with a limiting hole matched with the clamping block.

Through adopting above-mentioned technical scheme, the user can pull out fixture block from spacing downthehole the clamping device of can dismantling, and it is comparatively convenient to change clamping device.

Optionally, the upper end of threaded rod has set firmly first bevel gear, and the frame rotates and is connected with the axis of rotation, and the axis of rotation sets firmly the second bevel gear with first bevel gear adaptation, and the one end that the axis of rotation deviates from the second bevel gear has set firmly the hand wheel.

Through adopting above-mentioned technical scheme, the user rotates the hand wheel, drives first bevel gear through the second bevel gear and rotates, is convenient for finely tune the interval of going up supporting beam and lower supporting beam, and simple structure control is convenient.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the fixed plate, the movable plate and the limiting bolt, a user places the end part of the sample between the fixed plate and the movable plate, rotates the limiting bolt, and pushes the movable plate to move towards the fixed plate by the limiting bolt, so that the movable plate and the fixed plate are matched to clamp the end part of the sample, the sample does not need to be wound for multiple circles, and the fixing effect on the sample is improved;

2. through setting up dentate arch, dentate arch effectively increases the frictional force between sample and fixed plate and the fly leaf, has improved the fixed effect to the sample.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a ductility testing machine.

Fig. 2 is intended to highlight the structural schematic of the clamping device.

Fig. 3 is intended to highlight the schematic position of the first bevel gear and the second bevel gear.

Description of reference numerals: 1. a frame; 2. an upper support beam; 3. a lower support beam; 4. a lifting device; 5. a clamping device; 51. a fixing plate; 52. a movable plate; 53. a limiting plate; 511. a limiting shaft; 54. a limit bolt; 55. a tooth-shaped bulge; 5111. a return spring; 6. a scale; 31. a cursor; 41. a threaded rod; 42. a guide bar; 43. a drive motor; 541. a manual operating lever; 7. a first connecting shaft; 71. a clamping block; 8. a second connecting shaft; 9. a rotating shaft; 91. a second bevel gear; 92. a hand wheel; 411. a first bevel gear.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a ductility experiment machine.

Referring to fig. 1, an extensibility experimental machine, which comprises a frame 1, frame 1 is square frame form and vertical setting, 1 upper end fixed mounting of frame has last supporting beam 2, go up supporting beam 2 below and install a supporting beam 3, it all is equipped with clamping device 5 to go up supporting beam 2 and the mutual one side that is close to of supporting beam 3, the user utilizes two clamping device 5 to treat the both ends of detecting the sample and fixes, frame 1 installs the elevating gear 4 that drives supporting beam 3 and go up and down, the user utilizes 4 drive supporting beam 3 downshifts of elevating gear, the sample is stretched and is carried out the extensibility and detect.

Referring to fig. 1, first connecting shafts 7 are fixedly mounted on the sides, close to each other, of the upper support beam 2 and the lower support beam 3, the first connecting shafts 7 are vertically arranged, two first connecting shafts 7 are slidably connected with fixture blocks 71, and the fixture blocks 71 can be manually drawn out along the direction perpendicular to the axis of the first connecting shafts 7; clamping device 5 includes fixed plate 51, the equal fixed mounting of fixed plate 51 has second connecting axle 8, first connecting axle 7 set up the recess with 8 adaptations of second connecting axle, the user inserts second connecting axle 8 in the recess that corresponds first connecting axle 7, second connecting axle 8 sets up the spacing hole with fixture block 71 adaptation, the user inserts corresponding fixture block 71 back in the first connecting axle 7 that corresponds, fixture block 71 passes the spacing hole that corresponds second connecting axle 8 and can fix fixed plate 51 on first connecting axle 7, and then make two clamping device 5's fixed plate 51 fix respectively on upper support beam 2 and lower support beam 3.

Referring to fig. 1 and 2, the clamping device 5 further includes a limiting plate 53, the limiting plate 53 is parallel to the fixing plate 51, two limiting shafts 511 are fixedly mounted at two ends of the fixing plate 51 along the length direction, the limiting plate 53 and the two limiting shafts 511 are fixedly connected to the end portion of the fixing plate 51 deviating from the fixing plate 51, the fixing plate 51 is fixed through the limiting shafts 511, and a certain distance is left between the limiting plate 53 and the fixing plate 51.

Referring to fig. 1 and 2, the clamping device 5 further includes a movable plate 52, the movable plate 52 is parallel to the fixed plate 51 and is located between the limiting plate 53 and the fixed plate 51, two ends of the movable plate 52 are respectively provided with a circular hole, two limiting shafts 511 respectively penetrate through the two circular holes to be slidably connected with the movable plate 52, the movable plate 52 can axially slide along the limiting shafts 511, and further, the distance between the movable plate 52 and the fixed plate 51 is changed; the limiting shafts 511 are respectively sleeved with a return spring 5111, two ends of the return spring 5111 are respectively fixedly connected with the fixed plate 51 and the movable plate 52, the movable plate 52 and the fixed plate 51 have a larger distance in a natural state of the return spring 5111, and a user can manually insert the end of the sample between the fixed plate 51 and the movable plate 52.

Referring to fig. 1 and 2, a limiting bolt 54 is connected to the middle position of the limiting plate 53 through a thread, a manual operating rod 541 is connected to one end of the limiting bolt 54, which is away from the fixed plate 51, in a sliding manner, the manual operating rod 541 is perpendicular to the limiting bolt 54, a user can manually control the manual operating rod 541 to rotate, so that the limiting bolt 54 can be driven to rotate in a labor-saving manner, the limiting bolt 54 penetrates through the limiting plate 53 and abuts against the movable plate 52, the movable plate 52 is pushed against the fixed plate 51 when the limiting bolt 54 rotates, the reset spring 5111 is compressed, and the end of the sample is squeezed between the movable plate 52 and the fixed plate 51.

Referring to fig. 1 and 2, the movable plate 52 and the fixed plate 51 are fixedly provided with mutually matched toothed protrusions 55 at the sides close to each other, the toothed protrusions 55 of the movable plate 52 and the fixed plate 51 are close to each other to press the end of the sample, the friction at the contact positions of the sample and the fixed plate 51 and the movable plate 52 is effectively increased by the staggered toothed protrusions 55, the end of the sample is partially deformed, so that the end of the sample is clamped between the movable plate 52 and the fixed plate 51, and the two clamping devices 5 respectively clamp the two ends of the sample, so that the fixing effect is good.

Referring to fig. 1 and 3, elevating gear 4 includes threaded rod 41, threaded rod 41 is vertical to be set up and is located supporting

beam

2 and 3 length direction's of lower supporting beam with one end, the upper and lower both ends of threaded rod 41 all rotate with frame 1 and be connected, lower supporting beam 3 is close to the one end and the threaded rod 41 threaded connection of threaded rod 41, for avoiding lower supporting beam 3 to follow threaded rod 41 and rotate, elevating gear 4 still includes guide bar 42, the vertical installation of guide bar 42 is in the one end that lower supporting beam 3 deviates from threaded rod 41,

guide bar

42 and 3 sliding connection of lower supporting beam, lower supporting beam 3 is under the limiting displacement of guide bar 42, remain parallel with last supporting beam 2 all the time.

Referring to fig. 1 and 3, a rotating shaft 9 is rotatably connected to the frame 1, the rotating shaft 9 is horizontally arranged, a hand wheel 92 is fixedly installed at one end of the rotating shaft 9 away from the frame 1, when a user stands in front of the experiment machine, the height of the hand wheel 92 is approximately in the position of the chest all the time, the user can control the rotating shaft 9 to rotate by holding the hand wheel 92, and a second bevel gear 91 is fixedly installed at one end of the rotating shaft 9 away from the hand wheel 92 to drive the second bevel gear 91 to rotate synchronously; the upper end of the threaded rod 41 is fixedly provided with a first bevel gear 411, the first bevel gear 411 is meshed with the second bevel gear 91 and rotates in the direction perpendicular to the rotating shaft 9, and the first bevel gear 411 is coaxially sleeved outside the threaded rod 41 and fixedly connected with the threaded rod 41 so as to drive the threaded rod 41 to rotate.

Referring to fig. 1 and 3, user control threaded rod 41 rotates, makes lower supporting beam 3 and threaded rod 41 take place relative rotation and move down simultaneously, treats the great condition of test sample rigidity that waits, and the user is difficult for making the sample buckle, can use control hand wheel 92 to rotate, and the preliminary adjustment is installed the sample with the interval of last supporting beam 2 for lower supporting beam 3, and is stronger to the suitability of different samples.

Referring to fig. 1 and 3, a driving motor 43 is fixedly installed at the upper end of the rack 1, an output shaft of the driving motor 43 is vertically downward and fixedly connected with a threaded rod 41, after a sample is fixed, a user starts the driving motor 43 to drive the threaded rod 41 to rotate, so that the lower supporting beam 3 moves downward, and the sample is stretched to perform a test; the vernier 31 is fixedly installed on the lower supporting beam 3, the vernier 31 descends along with the lower supporting beam 3 synchronously, the vertical scale 6 is fixedly installed on the rack 1, the vernier 31 is connected with the scale 6 in a sliding mode, the vernier 31 points at different scales of the scale 6 in the descending process, and when a sample is broken, a user records the scales of the scale 6 below the position where the vernier 31 is located so as to record the stretching length of the sample.

The implementation principle of the ductility test machine in the embodiment of the application is as follows: the end of the sample is manually inserted between the fixed plate 51 and the movable plate 52 by a user, the manual operating rod 541 is manually controlled to rotate, the limiting bolt 54 can be driven to rotate in a labor-saving manner, the movable plate 52 is pushed towards the fixed plate 51, the reset spring 5111 is compressed, the end of the sample is squeezed between the movable plate 52 and the fixed plate 51, the tooth-shaped protrusions 55 of the movable plate 52 and the fixed plate 51 are close to each other to squeeze the end of the sample, the friction force at the contact position of the sample with the fixed plate 51 and the movable plate 52 is effectively increased by the staggered tooth-shaped protrusions 55, the end of the sample is partially deformed, the end of the sample is further clamped between the movable plate 52 and the fixed plate 51, the two clamping devices 5 respectively clamp the two ends of the sample, the sample does not need to be wound for multiple times for fixing, and the fixing effect is good.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A ductility experiment machine comprises a frame (1), and is characterized in that: frame (1) upper end has set firmly support beam (2), it is equipped with supporting beam (3) down to go up supporting beam (2) below, frame (1) is equipped with elevating gear (4) that supporting beam (3) go up the drive and goes up supporting beam (2) and supporting beam (3) one side that is close to each other all is equipped with clamping device (5), clamping device (5) are including fixed plate (51), limiting plate (53) and fly leaf (52), fixed plate (51) have set firmly two spacing axles (511), fly leaf (52) both ends respectively with two spacing axle (511) sliding connection, limiting plate (53) and the one end fixed connection that spacing axle (511) deviate from fixed plate (51), limiting plate (53) threaded connection has spacing bolt (54), spacing bolt (54) pierce through limiting plate (53) and contradict with fly leaf (52).

2. A ductility test rig as claimed in claim 1, wherein: and one sides of the movable plate (52) and the fixed plate (51) which are close to each other are fixedly provided with toothed bulges (55) which are matched with each other.

3. A ductility test rig as claimed in claim 1, wherein: the limiting shafts (511) are all sleeved with return springs (5111), the return springs (5111) are located between the movable plate (52) and the fixed plate (51), and the movable plate (52) is far away from the fixed plate (51) in a natural state of the return springs (5111).

4. A ductility test rig as claimed in claim 1, wherein: frame (1) sets firmly vertical scale (6), and lower supporting beam (3) set firmly vernier (31), and vernier (31) and scale (6) sliding connection.

5. A ductility test rig as claimed in claim 1, wherein: elevating gear (4) include threaded rod (41) and guide bar (42), and threaded rod (41) and the equal vertical setting of guide bar (42), threaded rod (41) rotate with frame (1) and are connected, guide bar (42) and frame (1) fixed connection, and length direction's one end and threaded rod (41) threaded connection are followed in lower supporting beam (3), the other end and guide bar (42) sliding connection, the coaxial fixedly connected with driving motor (43) of threaded rod (41).

6. A ductility test rig as claimed in claim 1, wherein: one end of the limiting bolt (54) departing from the movable plate (52) is connected with a manual operating rod (541) in a sliding mode, and the manual operating rod (541) is perpendicular to the limiting bolt (54).

7. A ductility test rig as claimed in claim 1, wherein: go up bracing beam (2) and lower bracing beam (3) one side that is close to each other and all set firmly first connecting axle (7), first connecting axle (7) equal sliding connection has fixture block (71), fixed plate (51) all set firmly second connecting axle (8), first connecting axle (7) set up with the recess of second connecting axle (8) adaptation, second connecting axle (8) set up with the spacing hole of fixture block (71) adaptation.

8. A ductility test rig as claimed in claim 5, wherein: the upper end of threaded rod (41) sets firmly first bevel gear (411), and frame (1) rotates and is connected with axis of rotation (9), and axis of rotation (9) set firmly second bevel gear (91) with first bevel gear (411) adaptation, and the one end that axis of rotation (9) deviates from second bevel gear (91) sets firmly hand wheel (92).