CN211122884U

CN211122884U - Marshall stability apparatus

Info

Publication number: CN211122884U
Application number: CN201922005665.2U
Authority: CN
Inventors: 王秀琴; 贾永明; 王胜志
Original assignee: Beijing Lingbei Road Building Materials Co ltd
Current assignee: Beijing Lingbei Road Building Materials Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-07-28
Anticipated expiration: 2029-11-19

Abstract

The utility model relates to a marshall stability apparatus, the load simulator comprises a case, pressure sensor, the pressurization support, lift platform, drive assembly and control system, pressure sensor sets up the top at quick-witted case, the pressurization support includes that undersetting and upper bracket set up the top at the undersetting, the upper bracket, undersetting and lift platform all set up between quick-witted case and pressure sensor, the lift platform level sets up the below at the undersetting, drive assembly is connected with the control system electricity, lift platform is connected with drive assembly, it is connected with a turning block to rotate respectively on the lateral wall of undersetting both sides, the highest position of turning block outline is no longer than the height of undersetting upper surface place position, the circumference lateral wall of every turning block all is fixed with a lug, the highest position that the lug can reach is higher than the position at undersetting upper surface place. The utility model discloses have the effect that the staff easily opened undersetting and upper bracket after experimental detection finishes.

Description

Marshall stability apparatus

Technical Field

The utility model belongs to the technical field of road test detects technique and specifically relates to a marshall stability apparatus is related to.

Background

The asphalt mixture is a generic name of a mixture formed by mixing mineral aggregate and asphalt binder, and is widely applied to the field of road engineering. The Marshall stability tester is suitable for testing the thermal stability and the plastic deformation resistance of the asphalt mixture, namely the stability and the flow value, and provides an accurate basis for the composition ratio design of the asphalt mixture.

The utility model with the publication number of CN205175826U discloses a Marshall stability tester, which comprises a case, a beam, a pressure sensor, a pressurizing support, a lifting platform, a driving component and a control system, wherein the top of the case is fixed with two vertically arranged upright posts, the beam is horizontally arranged above the case through the two upright posts, the pressure sensor is arranged at the bottom of the beam, the control system is arranged on the case, the pressurizing support comprises a lower support and an upper support, the lower support is arranged below the upper support, two sides of the top of the lower support are respectively vertically fixed with a guide post, the upper support is respectively vertically provided with a guide hole at the position corresponding to the two guide posts, each guide post is arranged inside the corresponding guide hole in a penetrating way, the upper support, the lower support and the lifting platform are arranged at the position between the case and the pressure sensor, and the lifting platform is horizontally arranged below the lower support, the driving assembly is arranged in the case and electrically connected with the control system, is connected with the lifting platform and can enable the lifting platform to move in the vertical direction.

In the above scheme, during test detection, a worker places a Marshall test piece between the upper support and the lower support, then the control system enables the driving assembly to drive the lifting platform to ascend, meanwhile, the lifting platform can drive the lower support and the upper support to vertically move upwards together until the top of the upper support abuts against the bottom of the pressure sensor, after the pressure sensor acquires stable value data of the Marshall test piece, the control system controls the driving assembly to enable the lifting platform to descend, and finally the worker needs to upwards lift the upper support to take out the Marshall test piece. Lifting platform will pressurize support jack-up and upper bracket top support in the pressure sensor bottom, but after experimental detection, when the staff upwards lifted up the upper bracket and took out marshall test piece, was difficult for opening between lower support and the upper bracket.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a marshall stability apparatus, it has the effect that the staff easily opened undersetting and upper bracket after experimental detection finishes.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a Marshall stability tester comprises a case, a pressure sensor, a pressurizing support, a lifting platform, a driving assembly and a control system, wherein the pressure sensor is arranged above the case, the pressurizing support comprises a lower support and an upper support, the upper support is arranged above the lower support, the upper support, the lower support and the lifting platform are arranged between the case and the pressure sensor, the lifting platform is horizontally arranged below the lower support, the driving assembly is arranged in the case, the control system is arranged on the case, the driving assembly is electrically connected with the control system, the lifting platform is connected with the driving assembly, the side walls on the two sides of the lower support are respectively and rotatably connected with a rotating block, the section of each rotating block in the vertical direction is circular, the highest position of the outer contour of the rotating block does not exceed the height of the upper surface of the lower support, and a convex block is fixed on the circumferential side wall of each rotating block, the highest position that the lug can reach is higher than the position that the upper surface of the lower support is located.

By adopting the technical scheme, after a worker places a Marshall test piece between the upper support and the lower support, the control system enables the driving assembly to drive the lifting platform, the lower support, the Marshall test piece and the upper support to vertically move upwards until the top of the upper support abuts against the bottom of the pressure sensor and the stability value of the test detection is obtained through the pressure sensor, then the worker enables the driving assembly to drive the lifting platform, the lower support, the Marshall test piece and the upper support to vertically move downwards through the control system, then the worker can enable the lug to abut against the lower surface of the upper support by rotating the rotating block, the lug can jack up the upper support after the rotating block is continuously rotated, the upper support and the lower support are separated, at the moment, the worker can take out the Marshall test piece, therefore, after the test detection is finished, the worker can take out the Marshall test piece without lifting the upper support upwards with special labor, the provision of the turning block and the projection provides a good point of application, thereby facilitating the opening of the lower and upper supports and the removal of the marshall test piece to be tested.

The utility model discloses further set up to: the side walls of the two sides of the lower support are respectively provided with a placing groove, and the rotating block is rotatably connected inside the corresponding placing grooves.

Through adopting above-mentioned technical scheme, the turning block is not the outside of direct setting at the undersetting, but rotates the inside of connecting at the standing groove, and consequently the setting of turning block can not increase the occupation space of undersetting, has improved the rationality.

The utility model discloses further set up to: the size of standing groove is unanimous with the size of turning block, has seted up on the inner wall of standing groove and has dodged the groove, and the lug setting is in the inside of dodging the groove.

Through adopting above-mentioned technical scheme, because the size of standing groove is unanimous with the size of turning block, consequently dodge setting up of groove and provide the space for the lug rotates along with the turning block, dodge setting up of groove and can also restrict the rotation range and the angle of lug and turning block to the staff can be more quick when rotatory turning block make the position of lug exceed the height and the jack-up upper bracket of bottom suspension upper surface place position.

The utility model discloses further set up to: the surface of the convex block is an arc-shaped guide surface.

Through adopting above-mentioned technical scheme, when the staff made the position and the bottom suspension upper surface parallel and level of lug at rotatory turning block, the surface of lug can support the lower surface of upper bracket this moment, the position of continuation rotatory turning block lug can surpass the upper surface of bottom suspension consequently can with upper bracket jack-up, thereby make upper bracket and bottom suspension part separately, the setting up of arc type guide face can make the turning block rotate the jack-up upper bracket that the in-process lug can be more steady, make the structure more reasonable.

The utility model discloses further set up to: and an operating rod is fixed on the side wall of the rotating block at a position close to the edge.

Through adopting above-mentioned technical scheme, setting up of action bars provides fine application of force point for the staff, because the action bars setting is in the border position of turning block lateral wall, and the axis apart from the turning block is far away, therefore the staff is more laborsaving when rotatory turning block through the action bars.

The utility model discloses further set up to: the utility model discloses a quick-witted case, including drive assembly, the worm, the dwang, worm wheel and sleeve, the worm level sets up and rotates the inside of connecting at quick-witted case, the worm is connected with drive motor, the electricity is connected between drive motor and the control system, the inside at quick-witted case is connected just to the vertical setting of dwang, the worm wheel is fixed in the outside of dwang bottom and with worm intermeshing, sleeve threaded connection is in the outside at dwang top, the vertical through-hole of having seted up in top of machine case, the sleeve stretches out the outside of quick-witted case and telescopic top through the through-hole is connected with lift platform's bottom, the vertical blocking groove of having seted up on the telescopic outer wall, the position department fixedly connected with that corresponds with the blocking groove blocks the piece.

Through adopting above-mentioned technical scheme, the staff makes driving motor start through control system, because worm gear intermeshing, consequently the dwang can rotate, the top and the sleeve threaded connection of dwang, the dwang stops the piece and can prevent the sleeve to rotate along with the dwang with the setting of stopping the groove rotating the in-process, and the sleeve can only rise or descend to the dwang can make lift platform rise or descend rotating the in-process.

The utility model discloses further set up to: the top of the case is fixed with a vertically arranged upright post, the outer side of the upright post horizontally penetrates through a cross beam, and the pressure sensor is arranged at the bottom of the cross beam.

Through adopting above-mentioned technical scheme, pressure sensor sets up in the bottom of crossbeam, makes drive assembly drive lift platform, undersetting, marshall test piece and the vertical upward movement of upper bracket when the staff passes through control system to the top of upper bracket supports when pressure sensor's bottom passes through the stability value that pressure sensor obtained experimental detection, stand and crossbeam can be fine play the effect of support.

The utility model discloses further set up to: the outer side of the upright post is respectively in threaded connection with an upper nut and a lower nut above and below the cross beam.

Through adopting above-mentioned technical scheme, can change the height of crossbeam place position through the position of adjusting upper nut and lower nut, and then can adjust pressure sensor's position.

In conclusion, the beneficial technical effects of the invention are as follows:

1. after the Marshall test piece is placed between the upper support and the lower support, the control system enables the driving assembly to drive the lifting platform, the lower support, the Marshall test piece and the upper support to vertically move upwards until the top of the upper support abuts against the bottom of the pressure sensor and the stability value of the test detection is obtained through the pressure sensor, then the control system enables the driving assembly to drive the lifting platform, the lower support, the Marshall test piece and the upper support to vertically move downwards, then the worker can enable the lug to abut against the lower surface of the upper support through rotating the rotating block, the lug can jack up the upper support after the rotating block is continuously rotated, the upper support and the lower support are separated, and at the moment, the worker can take out the Marshall test piece, so that the worker can take out the Marshall test piece without lifting the upper support upwards with special labor after the test detection is finished, the arrangement of the rotating block and the lug provides a good force application point, so that the lower support and the upper support are easily opened, and the detected Marshall test piece is taken out;

2. the size of the placing groove is consistent with that of the rotating block, so that a space is provided for the protruding block to rotate along with the rotating block by the arrangement of the avoiding groove, and the rotating range and the angle of the protruding block and the rotating block can be limited by the arrangement of the avoiding groove, so that a worker can more quickly enable the position of the protruding block to exceed the height of the upper surface of the lower support and jack up the upper support when rotating the rotating block;

3. when the staff made the position and the bottom suspension upper surface parallel and level of lug at rotatory turning block, the surface of lug can support the lower surface of top suspension this moment, and the position of continuation rotatory turning block lug can surpass the upper surface of bottom suspension consequently can be with top suspension, thereby makes top suspension and bottom suspension part, and setting up of arc type guide face can make the turning block rotate the jack-up top suspension that the in-process lug can be more steady, makes the structure more reasonable.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of the present invention (the chassis and the beam are partially cut away);

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of the lifting platform and the lower support;

FIG. 5 is a schematic cross-sectional view of the lower support;

fig. 6 is a schematic view of a connection structure of the rotary block, the projection, and the operation lever.

In the figure, 1, a chassis; 11. a through hole; 12. a blocking block; 21. a column; 22. screwing a nut; 23. a lower nut; 3. a cross beam; 31. mounting holes; 4. a pressure sensor; 5. a pressurizing support; 51. an upper support; 511. an upper recess; 512. a guide hole; 52. a lower support; 521. a limiting groove; 522. a lower recess; 523. a guide post; 524. a placement groove; 525. an avoidance groove; 526. rotating the block; 527. a bump; 5271. an arc-shaped guide surface; 528. an operating lever; 6. a lifting platform; 61. a limiting rod; 7. a drive assembly; 71. a drive motor; 72. a worm; 73. rotating the rod; 74. a worm gear; 75. a sleeve; 751. a blocking groove; 8. and (5) controlling the system.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a marshall stability apparatus, including quick-witted case 1, stand 21, crossbeam 3, pressure sensor 4, pressurization support 5, lift platform 6, drive assembly 7 and control system 8. The stand 21 is provided with two and two equal vertical fixes at quick-witted case 1's top of stand 21, and crossbeam 3 has vertically seted up a mounting hole 31 respectively in the position that is close to both ends, and two stands 21 wear to establish the inside at crossbeam 3 through two mounting holes 31 respectively, and the setting of crossbeam 3 level, the outside of every stand 21 have an upper nut 22 and lower nut 23 in the top of crossbeam 3 and below threaded connection respectively. The pressure sensor 4 is fixed at the bottom of the cross beam 3, and the control system 8 is arranged at the top of the case 1.

Referring to fig. 2, a driving assembly 7 is disposed inside the cabinet 1, and the driving assembly 7 includes a driving motor 71, a worm 72, a rotating lever 73, a worm wheel 74, and a sleeve 75. The worm 72 is horizontally arranged and rotatably connected to the inside of the case 1, the worm 72 is connected with an output shaft of the driving motor 71, and the driving motor 71 is electrically connected with the control system 8. The rotating rod 73 is vertically arranged and rotatably connected inside the case 1, and the worm wheel 74 is fixed on the outer side of the bottom of the rotating rod 73 and meshed with the worm 72. Sleeve 75 threaded connection has seted up through-hole 11 in the outside at dwang 73 top, and the top of quick-witted case 1 is vertical, and sleeve 75 stretches out the outside of quick-witted case 1 through-hole 11, and lift platform 6 level sets up and the bottom at lift platform 6 is fixed at the top of sleeve 75. Referring to fig. 3, a blocking groove 751 is vertically formed on an outer wall of the sleeve 75, a blocking piece 12 is fixedly connected to an inner wall of the through hole 11 at a position corresponding to the blocking groove 751, and the blocking piece 12 and the blocking groove 751 are engaged with each other.

Referring to fig. 2, a pressurizing support 5 is disposed between the elevating platform 6 and the pressure sensor 4, the pressurizing support 5 includes an upper support 51 and a lower support 52, and the upper support 51 is disposed above the lower support 52. Referring to fig. 4, a vertically disposed limiting rod 61 is fixed at the top of the lifting platform 6, a limiting groove 521 is vertically disposed on the lower surface of the lower support 52 at a position corresponding to the limiting rod 61, and the limiting rod 61 is disposed in the limiting hole. The lower surface of the lower support 52 is at the middle position of the lower concave part 522, the lower surface of the upper support 51 is at the middle position of the upper concave part 511, a cavity is formed between the lower concave part 522 and the upper concave part 511, and the Marshall test piece is arranged in the cavity during test detection. The upper surface of the lower support 52 is fixedly connected with a vertically arranged guide post 523 on each of two sides of the lower concave portion 522, the upper support 51 is vertically provided with a guide hole 512 at a position corresponding to the two guide posts 523, and the guide posts 523 penetrate through the corresponding guide holes 512.

Referring to fig. 5 and 6, the side walls of the two sides of the lower support 52 are respectively provided with a placing groove 524, a rotating block 526 is rotatably connected inside each placing groove 524, the placing grooves 524 and the rotating blocks 526 have the same size, and the vertical cross sections of the placing grooves 524 and the rotating blocks 526 are circular. Offer on the inner wall of standing groove 524 and dodge groove 525, fixedly connected with lug 527 on the circumference lateral wall of turning block 526, lug 527 sets up and dodges the inside of groove 525 and the surface of lug 527 is the arc type guide face 5271. An operating rod 528 is fixed to a side wall of the rotating block 526 at a position near the edge, and the axis of the operating rod 528 is parallel to the axis of the rotating block 526. The highest position of the outer contour of the rotating block 526 is flush with the position of the upper surface of the lower support 52, and the highest position which can be reached by the convex block 527 is higher than the position of the upper surface of the lower support 52. The arrangement of the avoiding groove 525 provides a space for the protrusion 527 to rotate along with the rotating block 526, and the arrangement of the avoiding groove 525 can also limit the rotating range and the angle of the protrusion 527 and the rotating block 526, so that when the rotating block 526 is rotated, a worker can more quickly enable the position of the protrusion 527 to exceed the height of the position of the upper surface of the lower support 52 and jack up the upper support 51. The arc-shaped guide surface 5271 can enable the protrusion 527 to more smoothly jack up the upper support 51 during the rotation of the rotating block 526, so that the structure is more reasonable.

The implementation principle of the above embodiment is as follows: during test, a worker places a marshall test piece in a cavity between the upper support 51 and the lower support 52, then the control system 8 enables the driving assembly 7 to drive the lifting platform 6 to ascend, meanwhile, the lifting platform 6 drives the lower support 52, the marshall test piece and the upper support 51 to move vertically upwards until the top of the upper support 51 abuts against the bottom of the pressure sensor 4, after the pressure sensor 4 obtains stable value data of the marshall test piece, the control system 8 enables the driving assembly 7 to drive the lifting platform 6, the lower support 52, the marshall test piece and the upper support 51 to move vertically downwards, then the worker can enable the bump 527 to abut against the lower surface of the upper support 51 by rotating the rotating block 526, the bump 527 can jack up the upper support 51 after continuing to rotate the rotating block 526 to separate the upper support 51 from the lower support 52, and then the worker can take out the marshall test piece, thus, after the test is completed, the operator can take out the marshall test piece without lifting the upper support 51 upward with a great effort, and the arrangement of the rotating block 526 and the bump 527 provides a good point of application, thereby easily opening the lower support 52 and the upper support 51 and taking out the marshall test piece to be tested.

The embodiment of the present invention is a preferred embodiment of the present invention, and the protection scope of the present invention is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A Marshall stability tester comprises a case (1), a pressure sensor (4), a pressurizing support (5), a lifting platform (6), a driving component (7) and a control system (8), wherein the pressure sensor (4) is arranged above the case (1), the pressurizing support (5) comprises a lower support (52) and an upper support (51), the upper support (51) is arranged above the lower support (52), the upper support (51), the lower support (52) and the lifting platform (6) are arranged between the case (1) and the pressure sensor (4), the lifting platform (6) is horizontally arranged below the lower support (52), the driving component (7) is arranged inside the case (1), the control system (8) is arranged on the case (1), the driving component (7) is electrically connected with the control system (8), the lifting platform (6) is connected with the driving component (7), the method is characterized in that: the side walls on two sides of the lower support (52) are respectively and rotatably connected with a rotating block (526), the section of each rotating block (526) in the vertical direction is circular, the highest position of the outer contour of each rotating block (526) does not exceed the height of the position of the upper surface of the lower support (52), a convex block (527) is fixed on the circumferential side wall of each rotating block (526), and the highest position which can be reached by the convex block (527) is higher than the position of the upper surface of the lower support (52).

2. The marshall stability apparatus of claim 1, wherein: the side walls of the two sides of the lower support (52) are respectively provided with a placing groove (524), and the rotating block (526) is rotatably connected inside the corresponding placing groove (524).

3. The marshall stability apparatus of claim 2, wherein: the size of standing groove (524) is unanimous with the size of turning block (526), has seted up on the inner wall of standing groove (524) and has dodged groove (525), and lug (527) set up in the inside of dodging groove (525).

4. The marshall stability apparatus of claim 3, wherein: the surface of the lug (527) is an arc-shaped guide surface (5271).

5. The marshall stability apparatus of claim 1, wherein: an operating rod (528) is fixed on the side wall of the rotating block (526) at a position close to the edge.

6. The marshall stability apparatus of claim 1, wherein: the driving assembly (7) comprises a driving motor (71), a worm (72), a rotating rod (73), a worm wheel (74) and a sleeve (75), the worm (72) is horizontally arranged and is rotatably connected inside the case (1), the worm (72) is connected with the driving motor (71), the driving motor (71) is electrically connected with the control system (8), the rotating rod (73) is vertically arranged and is rotatably connected inside the case (1), the worm wheel (74) is fixed on the outer side of the bottom of the rotating rod (73) and is mutually meshed with the worm (72), the sleeve (75) is in threaded connection with the outer side of the top of the rotating rod (73), a through hole (11) is vertically formed in the top of the case (1), the sleeve (75) extends out of the case (1) through the through hole (11), the top of the sleeve (75) is connected with the bottom of the lifting platform (6), a blocking groove (751) is vertically formed in the outer wall of the sleeve (75, a blocking block (12) is fixedly connected to the inner wall of the through hole (11) at a position corresponding to the blocking groove (751), and the blocking block (12) is matched with the blocking groove (751).

7. The marshall stability apparatus of claim 1, wherein: the top of the case (1) is fixed with a vertical upright post (21), the outer side of the upright post (21) horizontally penetrates through a cross beam (3), and a pressure sensor (4) is arranged at the bottom of the cross beam (3).

8. The marshall stability apparatus of claim 7, wherein: the outer side of the upright post (21) is respectively in threaded connection with an upper nut (22) and a lower nut (23) above and below the cross beam (3).