CN214622115U - Pitch ductility detection device - Google Patents

Abstract

The application relates to an asphalt ductility detection device, which comprises a connecting piece for fixing a fixing block on a bottom plate, wherein a connecting hole is formed in the surface, close to the side wall of a placing groove, of the fixing block, and an annular clamping groove is formed in the inner wall of the connecting hole; the connecting piece comprises a connecting pipe, a connecting cap, a push rod, a slide block and an inserting block, and one end of the connecting pipe penetrates through the bottom plate and is positioned in the inner ring of the connecting hole; the connecting cap is arranged at one end of the connecting pipe far away from the fixing block, and one end of the connecting cap close to the connecting pipe is separated from the bottom plate; one end of the push rod is positioned in the connecting pipe, and the other end of the push rod penetrates out of the connecting cap and is horizontally connected with the connecting cap in a sliding manner; the sliding block is arranged at one end of the push rod in the connecting pipe, and the sectional area of one end, close to the push rod, of the sliding block is larger than that of the other end, far away from the push rod; one end of the insertion block is positioned in the connecting pipe and is abutted to the peripheral side surface of the sliding block, and the other end of the insertion block is arranged in the annular clamping groove in a sliding mode. This application has and makes the fixed block conveniently install and remove the effect on the bottom plate.

Description

Pitch ductility detection device

Technical Field

The application relates to the technical field of detection devices, in particular to an asphalt ductility detection device.

Background

Asphalt ductility refers to the ductility of asphalt, and the higher the ductility is, the better the plasticity of asphalt is, so ductility is an important index for evaluating the plasticity of asphalt, wherein an asphalt ductility detection device is used for measuring the maximum plastic deformation test of a sample during disconnection and the elongation test of materials such as modified asphalt.

In the related technology, the asphalt ductility detection device comprises a splayed test mold, wherein the splayed test mold further comprises a bottom plate and a splayed mold, the bottom plate is in a cuboid shape and is horizontally arranged, a placing groove is formed in the upper surface of the bottom plate, and two inner side walls opposite to the placing groove are provided with openings; the splayed die further comprises a fixing block, the fixing block is fixed on the inner wall of the placing groove, and the fixing mode is that the fixing block is fixed on the bottom plate through bolts.

In view of the above-mentioned related art, the inventor believes that there is a defect that the fixing block is fixed on the bottom plate by the bolt, and when the fixing block needs to be detached from or mounted on the bottom plate, the bolt needs to be rotated repeatedly, so that the fixing block is inconvenient to lock and unlock.

SUMMERY OF THE UTILITY MODEL

In order to make the fixed block conveniently install and remove on the bottom plate, this application provides an asphalt ductility detection device.

The application provides an asphalt ductility detection device adopts following technical scheme:

the asphalt ductility detection device comprises a connecting piece for fixing a fixing block on a bottom plate, wherein a connecting hole is formed in the surface, close to the side wall of a placing groove, of the fixing block, and an annular clamping groove is formed in the inner wall of the connecting hole; the connecting piece comprises a connecting pipe, a connecting cap, a push rod, a slide block and an inserting block, wherein one end of the connecting pipe penetrates through the bottom plate and is positioned in the connecting hole; the connecting cap is arranged at one end of the connecting pipe far away from the fixing block, and one end of the connecting cap close to the connecting pipe forms a barrier with the bottom plate; one end of the push rod is positioned in the connecting pipe, and the other end of the push rod penetrates out of the connecting cap and is horizontally connected with the connecting cap in a sliding manner; the sliding block is arranged at one end of the push rod, which is positioned on the connecting pipe, and the sectional area of one end of the sliding block, which is close to the push rod, is larger than that of the other end of the sliding block, which is far away from the push rod; one end of the insertion block is located in the connecting pipe and is abutted to the peripheral side surface of the sliding block, and the other end of the insertion block penetrates through the connecting pipe and is arranged in the annular clamping groove in a sliding mode.

By adopting the technical scheme, when the fixing block is fixed on the bottom plate, the fixing block is firstly placed in the placing groove of the bottom plate, the fixing block is enabled to be tightly attached to the side wall of the placing groove, then the connecting pipe penetrates through the bottom plate and extends into the connecting hole, when the connecting pipe is positioned at a proper position of the connecting hole, the push rod is pushed towards the direction close to the fixing block, the push rod enables the slide block to slide towards the direction close to the fixing block, wherein in the sliding process of the slide block, the slide block can push one end of the inserting block positioned in the connecting pipe, so the inserting block can move towards the direction of the annular clamping groove, when the inserting block is inserted into the annular clamping groove, the connecting pipe and the fixing block are clamped together, and the connecting cap forms a barrier against the bottom plate, so that the fixing block is fixed on the bottom plate, when unlocking is needed, if only one inserting block is arranged, the inserting block can be vertically arranged, only the push rod needs to be pulled towards the direction far away from the fixing block, make the inserted block break away from ring groove along with self gravity can, compare in the mode that the bolt was installed the fixed block on the bottom plate, this kind of design for the fixed block is more convenient to be installed on the bottom plate.

Preferably, the number of the insertion blocks is two, and the two insertion blocks are symmetrically arranged relative to the axis of the push rod; the one end that the inserted block is located the connecting tube is provided with the elastic component, elastic component one end and inserted block fixed connection, the inner wall fixed connection of the other end and connecting tube to the elastic component is arranged in making the inserted block follow ring groove roll-off.

Through adopting above-mentioned technical scheme, be provided with two because of the inserted block symmetry, so when the inserted block inserts ring slot in, two inserted blocks can form more evenly and separate the fender to ring slot, thereby make the connecting piece can more firmly support the fixed block joint on the bottom plate, the setting of elastic component in addition, even two inserted blocks are the longitudinal condition or are the horizontality setting, when the slider removes to the direction of keeping away from the fixed block, also can be close to each other simultaneously between two inserted blocks, thereby the difficult condition that one of them inserted block can't break away from ring slot that appears.

Preferably, when the end of the insertion block, which is located outside the connecting pipe, abuts against the groove bottom of the annular clamping groove, the distance between the end of the insertion block, which is located inside the connecting pipe, and the axis of the push rod is smaller than the distance between the edge of the end, which has the larger cross-sectional area of the sliding block, of the insertion block and the axis of the push rod.

Through adopting above-mentioned technical scheme, when making the push rod promote the slider to the direction removal that is close to the fixed block, be difficult for appearing the slider and keep away from fixed block one side from the inserted block and remove to the condition that the inserted block is close to fixed block one side, so the staff is installing the fixed block at the in-process of bottom plate, be difficult for appearing the inserted block and inserted in ring groove, then break away from ring groove's the condition again, thereby the staff only needs to continue to promote to the direction of fixed block according to the push rod, just can judge easily whether the inserted block inserts in ring groove, and then make the fixed block fix on the bottom plate more conveniently.

Preferably, an inclined surface is arranged at one end of the insertion block close to the sliding block at one end, and the inclined surface is parallel to the outer surface where the sliding block abuts against the insertion block.

Through adopting above-mentioned technical scheme, because of the setting on inclined plane for the contact mode of inserted block and slider is changed into the plane contact by the edge contact, so when promoting the slider and make the inserted block insert ring slot's in-process, make push rod horizontal migration's power can apply the power of cunning to ring slot direction to the inserted block better through the inclined plane, so the removal of push rod can be more smooth, thereby also can be convenient for the staff to install the fixed block on the bottom plate.

Preferably, be provided with the pressing part on the surface of connecting the cap, when the inserted block butt ring groove tank bottom, the pressing part is used for making the trend that the push rod moved to the fixed block direction.

Through adopting above-mentioned technical scheme, when promoting the push rod, and when making the inserted block butt ring groove tank bottom, can make the pressing part exert the power to the fixed block direction to the push rod, and because of the slider is located the one end of connecting pipe and blocks, then the push rod just has the trend that moves to the fixed block direction, so make the inserted block tightly butt ring groove's tank bottom, compare in the mode that does not set up the pressing part, this kind of design, make the push rod difficult to the direction removal of keeping away from the fixed block under receiving external influence, thereby make the inserted block difficult to break away from ring groove, and then make the connecting piece can install the fixed block on the bottom plate more firmly.

Preferably, the pressing piece comprises a fixing rod, a pressing block and a spring in a contraction state, the fixing rod is arranged on the outer surface of the connecting cap, and the axis of the fixing rod is parallel to the axis of the push rod; one end of the pressing block is sleeved on the fixed rod in a sliding mode, the sliding direction of the pressing block is parallel to the axis of the fixed rod, and one end of the pressing block is abutted to the push rod; the spring is sleeved on the fixing rod, one end of the spring is fixedly connected with the connecting cap, and the other end of the spring is fixedly connected with the pressing block.

Through adopting above-mentioned technical scheme, when promoting the push rod, and make the bottom of the groove of inserted block butt ring groove after, can make briquetting butt push rod, then the power under spring self contraction state, alright exert the power towards the fixed block direction to the push rod through the briquetting, but also because of the slider is blocked by the one end that the inserted block is located the connecting tube to just reach the purpose that makes the trend that the push rod moved to the fixed block direction.

Preferably, one end of the fixing rod, which is far away from the connecting cap, is connected with a blocking ring in a threaded manner, and the blocking ring and the pressing block form a blocking block on the surface of one side, which is far away from the connecting cap.

Through adopting above-mentioned technical scheme, when will follow the bottom plate with the fixed block and pull the push rod to the direction of keeping away from the fixed block when pulling down, make the push rod can promote the briquetting and remove to the direction of keeping away from the connection cap, so separate the setting of keeping off the ring, can make the push rod at the in-process that removes, be difficult for releasing the briquetting from the dead lever, thereby the staff is when installing and removing fast, is difficult for making the pressing piece inefficacy, and then makes the fixed block can be more convenient when installing and removing.

Preferably, the push rod is fixedly sleeved with a stabilizing ring at one end in the connecting pipe, and the circumferential side surface of the stabilizing ring is abutted against the inner wall of the connecting pipe.

Through adopting above-mentioned technical scheme, because of the setting of stabilizing ring for the push rod is at the in-process that removes, and the slider is difficult for rocking from top to bottom, then is difficult for appearing one of them inserted block and has already butt ring groove's tank bottom, and has the condition of interval between another inserted block and ring groove's the tank bottom, so can make the push rod promote two inserted blocks more evenly and remove, thereby make the connecting piece can fix the fixed block on the bottom plate more steadily.

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

1. through the arrangement that the connecting piece comprises the connecting pipe, the connecting cap, the push rod, the sliding block and the inserting block, the fixing block can be locked on the bottom plate only by pushing the push rod, and the fixing block can be unlocked only by pulling the push rod, so that the fixing block is more conveniently arranged on the bottom plate;

2. through the arrangement of the pressing piece and the mutual matching of the inserting block and the sliding block, the push rod is not easy to move in the direction away from the fixed block under the influence of the outside, so that the inserting block is not easy to separate from the annular clamping groove, and the fixed block can be more firmly installed on the bottom plate by the connecting piece;

3. through the setting of stabilizing ring for the push rod is at the in-process that removes, and the slider is difficult for rocking from top to bottom, then is difficult for appearing one of them inserted block and has already butt ring groove's tank bottom, and has the condition of interval between another inserted block and ring groove's the tank bottom, so can make the push rod promote two inserted blocks more evenly and remove.

Drawings

Fig. 1 is a perspective view of a detection device in an embodiment of the present application.

Fig. 2 is a partial sectional view showing a specific structure of the connector.

Description of reference numerals: 1. testing a splayed die; 11. a base plate; 111. a placement groove; 112. perforating; 12. a splayed matrix; 121. a fixed block; 2. connecting holes; 21. an annular neck; 3. a connecting member; 31. a connecting pipe; 32. a connecting cap; 33. a push rod; 34. a slider; 35. inserting a block; 351. an inclined surface; 4. an elastic member; 5. a pressing member; 51. fixing the rod; 52. briquetting; 53. a spring; 6. a baffle ring; 7. and (4) stabilizing the ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses pitch ductility detection device. Referring to fig. 1, pitch ductility detection device includes splayed examination mould 1, and splayed examination mould 1 still includes bottom plate 11 and splayed mould 12, and wherein 11 levels of bottom plate set up, and is concrete, and bottom plate 11 is the copper product matter and is the cuboid shape, and the upper surface of bottom plate 11 is formed with standing groove 111 integratively, and two inside wall openings that standing groove 111 is relative to make bottom plate 11 be the U-shaped along the cross-section of standing groove 111 direction of intercommunication.

Referring to fig. 1 and 2, splayed test 1 includes two fixed blocks 121, two fixed blocks 121 are fixed respectively on two relative inside walls of standing groove 111, and the lower surface of fixed block 121 and the diapire butt of standing groove 111, and in this embodiment, because of two fixed blocks 121 are all unanimous with the fixed mode of bottom plate 11, the fixed mode of event follow-up only a fixed block 121 is narrated, specifically, connecting hole 2 has been seted up on the fixed block 121 is close to the side surface of standing groove 111 lateral wall, and the cross-section of connecting hole 2 is circular, and ring channel 21 has been seted up on the inner wall of connecting hole 2, ring channel 21 sets up around the central line of connecting hole 2.

Referring to fig. 1 and 2, a through hole 112 is formed in the bottom plate 11, the through hole 112 is communicated with the connection hole 2, the through hole 112 and the connection hole 2 are coaxially arranged, the diameter of the through hole 112 is the same as that of the connection hole 2, a connection member 3 for fixing the fixing block 121 on the bottom plate 11 is further arranged at the position of the through hole 112 and the connection hole 2, specifically, the connection member 3 comprises a connection pipe 31 and a connection cap 32, the connection pipe 31 is in a circular pipe shape, one end of the connection pipe 31 extends into the connection hole 2 from the through hole 112, the other end of the connection pipe 31 extends to the outer surface of the bottom plate 11, and the circumferential side surface of the connection pipe 31 is abutted against the inner walls of the connection hole 2 and the through hole 112.

Referring to fig. 1 and 2, the connection cap 32 is cylindrical, the connection cap 32 is coaxially fixed at an end of the connection pipe 31 far away from one end of the connection hole 2, and the radius of the connection cap 32 is greater than that of the connection pipe 31, so that the end surface of the connection cap 32 near one end of the connection pipe 31 forms a barrier for the bottom plate 11, and when the fixing block 121 is clamped on the connection pipe 31, the connection pipe 31 and the connection cap 32 are fixedly connected, so that the fixing block 121 is fixed on the bottom plate 11.

Referring to fig. 1 and 2, the connecting member 3 further includes a push rod 33, a sliding block 34 and an insertion block 35, the push rod 33 is in a square rod shape, specifically, the push rod 33 is horizontally disposed, one end of the push rod 33 is located in the connecting pipe 31, the other end of the push rod 33 penetrates out of the center line of the connecting cap 32, and the push rod 33 and the connecting cap 32 are in clearance fit, so that the push rod 33 can slide along the axis direction of the push rod 33; the sliding block 34 is fixed at the end of the push rod 33 at one end in the connecting pipe 31, and the cross section of the sliding block 34 is an isosceles trapezoid, wherein the lower base of the isosceles trapezoid is connected with the push rod 33, and the two sides of the isosceles trapezoid are symmetrically arranged relative to the axis of the push rod 33.

Referring to fig. 1 and 2, the insert 35 is in a rectangular parallelepiped shape, and the two insert 35 are provided, two insert 35 are provided symmetrically with respect to the axis of the push rod 33, specifically, one end of the insert 35 abuts against the circumferential side surface of the slider 34 at the two waists, the other end passes through the inner wall of the connecting pipe 31 and is slidably provided in the ring slot 21, and in this embodiment, an inclined surface 351 is provided at one end of the insert 35 close to the slider 34, and the inclined surface 351 is parallel to the circumferential side surface of the slider 34 at the two waists.

Referring to fig. 1 and 2, the insertion block 35 is further provided with an elastic member 4, in this embodiment, the elastic member 4 is a spring, specifically, one end of the elastic member 4 is bonded to an outer wall of the insertion block 35, and the other end is bonded to an inner wall of the connection pipe 31, when the push rod 33 moves towards the fixed block 121, the push rod 33 can pass through the slider 34, so that the insertion block 35 is gradually inserted into the ring-shaped slot 21, so that the fixed block 121 is clamped on the connection pipe 31, thereby achieving the purpose of fixing the fixed block 121 on the bottom plate 11, when the push rod 33 moves towards a direction away from the fixed block 121, the insertion block 35 can move towards a direction away from the ring-shaped slot 21 under the action of the elastic member 4, when the insertion block 35 slides out of the ring-shaped slot 21, the fixed block 121 can be unlocked from the bottom plate 11, compared to the design of installing the fixed block 121 by a bolt, so that the fixing block 121 can be more conveniently mounted on and dismounted from the base plate 11.

Referring to fig. 1 and 2, in this embodiment, when the push rod 33 is pushed to make the insertion block 35 abut against the bottom of the annular slot 21, a distance between one end of the insertion block 35 located in the connecting pipe 31 and the axis of the push rod 33 is smaller than a distance between an edge of one end of the slider 34 close to the push rod 33 and the axis of the push rod 33, so that in the process of installing the fixed block 121, after the insertion block 35 abuts against the bottom of the annular slot 21, the slider 34 is not easy to move continuously toward the fixed block 121, and a worker can easily determine whether the insertion block 35 is inserted into the annular slot 21 only by determining whether the push rod 33 can continuously push toward the fixed block 121, so that the fixed block 121 is more conveniently installed on the bottom plate 11.

Referring to fig. 1 and 2, a stabilizing ring 7 is fixedly sleeved on one end of the push rod 33 located in the connecting pipe 31, the stabilizing ring 7 is in a circular ring shape, and the outer ring surface of the stabilizing ring 7 is completely abutted to the inner wall of the connecting pipe 31, so that when the push rod 33 pushes the slider 34, and the slider 34 pushes the insert blocks 35 to move towards the direction close to the ring-shaped slot 21, the slider 34 is not easy to shake up and down, and then the slider 34 moves horizontally along the axis of the push rod 33 more accurately, so that the situation that one insert block 35 is already abutted to the slot bottom of the ring-shaped slot 21 and a gap exists between the other insert block 35 and the slot bottom of the ring-shaped slot 21 is not easy to occur, and further, the push rod 33 can push the two insert blocks 35 to move more uniformly, which is helpful for the connecting member 3 to more stably install the fixing block 121 on the bottom plate 11.

Referring to fig. 1 and 2, a pressing member 5 is disposed on a side surface of the connecting cap 32 away from the connecting tube 31, the pressing member 5 includes a fixing rod 51, a pressing block 52 and a spring 53 in a contracted state, specifically, the fixing rod 51 is in a shape of a round rod, one end of the fixing rod 51 is fixed on a side surface of the connecting cap 32 away from the connecting tube 31, and the other end extends in a direction away from the connecting cap 32 in parallel to an axis of the push rod 33; the pressing block 52 is rectangular parallelepiped, one end of the pressing block 52 is sleeved on the fixing rod 51, the pressing block 52 and the fixing rod 51 are perpendicular to each other, the pressing block 52 and the fixing rod 51 are in clearance fit, and one end of the pressing block 52 abuts against one end of the push rod 33 located outside the connecting pipe 31.

Referring to fig. 1 and 2, the spring 53 is sleeved on the fixing rod 51, one end of the spring 53 is bonded on the connecting cap 32, and the other end of the spring 53 is bonded on one side surface of the pressing block 52 close to the connecting cap 32, so that when the insertion block 35 abuts against the groove bottom of the ring-shaped slot 21 through the push rod 33, the pressing block 52 abuts on the push rod 33, at this time, the spring 53 can apply a force in a self-contraction state to the push rod 33 through the pressing block 52 in a direction towards the fixing block 121, and therefore, the sliding block 34 is blocked by one end of the insertion block 35 located in the connecting pipe 31, so that the push rod 33 has a tendency to move towards the fixing block 121, and the push rod 33 can tightly abut against the groove bottom of the ring-shaped slot 21 through the sliding block 34.

Referring to fig. 1 and 2, in this embodiment, when the push rod 33 is affected by the outside, because the pressing block 52 presses the push rod 33 all the time, the push rod 33 is not easy to move in the direction away from the fixing block 121, so that the insertion block 35 is not easy to disengage from the circular clamping groove 21, and further the fixing block 121 can be installed on the bottom plate 11 more firmly by the connecting member 3, and when the fixing block 121 needs to be detached, only the push rod 33 needs to be pulled reversely, so that the spring 53 sleeved on the fixing rod 51 extends, and therefore the connecting member 3 can be installed on the bottom plate 11 more firmly by the fixing block 121, and also the fixing block 121 can be detached from the bottom plate 11 more conveniently.

Referring to fig. 1 and 2, one end of the fixing rod 51 far away from the connecting cap 32 is in threaded connection with a blocking ring 6, the blocking ring 6 is in a circular ring shape, specifically, the blocking ring 6 is located on one side of the pressing block 52 far away from the connecting cap 32, and the blocking ring 6 is in threaded connection with the fixing rod 51, so in this embodiment, after the pressing piece 5 is installed, the blocking ring 6 is installed on the fixing rod 51 alone, in addition, the blocking ring 6 can be used in the process of detaching the fixing block 121, the situation that the pressing block 52 falls off from the fixing rod 51 due to the fact that the push rod 33 is pulled by a worker is reduced by too much distance, and the pressing piece 5 is not prone to frequent failure when the worker is rapidly installed and detached, and the fixing block 121 is more convenient to install and detach.

The implementation principle of the asphalt ductility detection device in the embodiment of the application is as follows: when the fixing block 121 is to be installed on the bottom plate 11, the fixing block 121 is first placed in the placing groove 111, the connecting hole 2 is aligned with the through hole 112, then the connecting pipe 31 is extended into the connecting hole 2 from the through hole 112, and in the process, the push rod 33 is pulled, so that the inserting block 35 does not extend from the connecting pipe 31, when the inserting block 35 is extended into the through hole 112 along with the connecting pipe 31, the push rod 33 can be released, then the connecting pipe 31 is continuously pushed in the direction close to the fixing block 121, when the inserting block 35 moves to the circular clamping groove 21, the spring 53 on the fixing rod 51 passes through the pressing block 52, so that the push rod 33 moves in the direction of the fixing block 121, when the push rod 33 cannot move continuously in the direction of the fixing block 121, the fixing block 121 and the connecting pipe 31 are clamped together, and the connecting cap 32 forms a barrier with the bottom plate 11, and the connecting cap 32 and the connecting pipe 31 are fixedly connected, so that the fixing block 121 is fixed to the base plate 11.

When the fixing block 121 is to be detached from the bottom plate 11, the push rod 33 is pulled in a direction away from the fixing block 121, so that the insertion block 35 can slide out of the annular clamping groove 21, compared with a mode of installing the fixing block 121 by rotating a bolt, in this design mode, when the fixing block 121 is installed on the bottom plate 11 and detached from the bottom plate 11, the push rod 33 is pushed or pulled, and therefore the fixing block 121 is installed on the bottom plate 11 more conveniently.

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 (8)

1. The utility model provides an asphalt ductility detection device which characterized in that: the fixing device comprises a connecting piece (3) used for fixing a fixing block (121) on a bottom plate (11), wherein a connecting hole (2) is formed in the surface, close to the side wall of a placing groove (111), of the fixing block (121), and an annular clamping groove (21) is formed in the inner wall of the connecting hole (2); the connecting piece (3) comprises a connecting pipe (31), a connecting cap (32), a push rod (33), a sliding block (34) and an inserting block (35), wherein one end of the connecting pipe (31) penetrates through the bottom plate (11) and is positioned in the connecting hole (2); the connecting cap (32) is arranged at one end, far away from the fixing block (121), of the connecting pipe (31), and one end, close to the connecting pipe (31), of the connecting cap (32) forms a barrier with the bottom plate (11); one end of the push rod (33) is positioned in the connecting pipe (31), and the other end of the push rod penetrates out of the connecting cap (32) and is horizontally connected with the connecting cap (32) in a sliding manner; the sliding block (34) is arranged at one end of the push rod (33) positioned on the connecting pipe (31), and the cross section area of one end, close to the push rod (33), of the sliding block (34) is larger than that of the other end, far away from the push rod (33); one end of the insertion block (35) is positioned in the connecting pipe (31) and is abutted to the peripheral side surface of the sliding block (34), and the other end of the insertion block penetrates through the connecting pipe (31) and is arranged in the annular clamping groove (21) in a sliding mode.

2. The asphalt ductility detecting apparatus according to claim 1, characterized in that: the number of the two insertion blocks (35) is two, and the two insertion blocks (35) are symmetrically arranged relative to the axis of the push rod (33); one end that inserted block (35) are located connecting pipe (31) is provided with elastic component (4), elastic component (4) one end and inserted block (35) fixed connection, the inner wall fixed connection of the other end and connecting pipe (31) to elastic component (4) are arranged in making inserted block (35) follow ring groove (21) roll-off.

3. The asphalt ductility detecting apparatus according to claim 2, characterized in that: when the end of the insertion block (35) located outside the connecting pipe (31) is abutted to the bottom of the annular clamping groove (21), the distance between the end of the insertion block (35) located inside the connecting pipe (31) and the axis of the push rod (33) is smaller than the distance between the edge of the end with the larger sectional area of the sliding block (34) and the axis of the push rod (33).

4. The asphalt ductility detecting apparatus according to claim 2, characterized in that: an inclined surface (351) is arranged at one end, close to the sliding block (34), of the insertion block (35), and the inclined surface (351) is parallel to the outer surface where the sliding block (34) abuts against the insertion block (35).

5. The asphalt ductility detecting apparatus according to claim 3, characterized in that: the outer surface of the connecting cap (32) is provided with a pressing piece (5), and when the insertion block (35) abuts against the bottom of the annular clamping groove (21), the pressing piece (5) is used for enabling the push rod (33) to move towards the direction of the fixed block (121).

6. The asphalt ductility detecting apparatus according to claim 5, characterized in that: the pressing piece (5) comprises a fixing rod (51), a pressing block (52) and a spring (53) in a contraction state, the fixing rod (51) is arranged on the outer surface of the connecting cap (32), and the axis of the fixing rod (51) is parallel to the axis of the push rod (33); one end of the pressing block (52) is slidably sleeved on the fixing rod (51), the sliding direction of the pressing block (52) is parallel to the axis of the fixing rod (51), and one end of the pressing block (52) is abutted against the push rod (33); the spring (53) is sleeved on the fixing rod (51), one end of the spring (53) is fixedly connected with the connecting cap (32), and the other end of the spring (53) is fixedly connected with the pressing block (52).

7. The asphalt ductility detecting apparatus according to claim 6, characterized in that: one end of the fixing rod (51) far away from the connecting cap (32) is connected with a blocking ring (6) in a threaded mode, and the blocking ring (6) and the pressing block (52) form a blocking on the surface of one side far away from the connecting cap (32).

8. The asphalt ductility detecting apparatus according to claim 3, characterized in that: the push rod (33) is located one end in connecting pipe (31) and is fixed the cover and be equipped with stabilizing ring (7), and the week side surface of stabilizing ring (7) and the inner wall butt of connecting pipe (31).

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