A hydraulic servo fatigue testing machine for cement stabilized macadam base

Abstract

The utility model relates to roadbed test technical field especially is point to a kind of hydraulic servo fatigue testing machine for cement stabilized macadam base, including base, the four corners of base top end are uniformly fixed with prop, the top of four props is fixed with top plate, the top of top plate is fixed with hydraulic press, frame is fixed between four props, the side of base top end is equipped with limit component;Through first guide rail, sliding plate, first motor, bidirectional screw rod, screw rod nut, toothed plate, second guide rail, gear, second motor, limit plate, screw rod and tablet pressing etc. Structure mutual cooperation, can be according to the macadam base size of test to its multidirectional location, to substantially improve the stability in macadam base test, and then improve the accuracy of base fatigue test;Through dust collection bin, dust collector, extension plate, conduit and baffle etc. Structure, effectively reduce the spatter of base material, and then provide safe test environment for test personnel, simultaneously can to the generated material recycling.

Description

TECHNICAL FIELD

[0001] The utility model relates to roadbed test technical field especially relates to a kind of hydraulic servo fatigue testing machine for cement stabilized macadam base. BACKGROUND

[0002] With the large-scale development of traffic infrastructure construction, cement stabilized macadam base is widely used in road engineering. It has the advantages of high strength, good stability, relatively low cost, etc., and plays a key role in ensuring the bearing capacity and service life of the road. Under the combined influence of long-term vehicle load and natural environmental factors, cement stabilized macadam base is prone to fatigue damage, and thus needs to be tested by a fatigue testing machine.

[0003] According to the search, the publication (announcement) number: CN202321974303.4 discloses an asphalt concrete fatigue testing device. In this technology, it is disclosed that "the device includes a base and a press head, the bottom end of the press head is installed with a lower pressing die, the upper surface of the base is symmetrically fixed with two supporting plates, a right-angle stage is rotatably installed between the two supporting plates, and two T-shaped sliding rails are symmetrically fixed on the upper surface of the base. The knob drives the screw rod to rotate, the screw rod drives the sliding block to move forward and backward, the sliding block drives the first support to move forward and backward, the first support drives the connecting rod to rotate around the second support, the rotation and movement of the connecting rod drives the right-angle stage to rotate around the supporting plate by a certain angle, and the device can quickly adjust the angle of the asphalt concrete block. The angle adjustment method is simple and easy to operate, and is convenient for experimenters to use";

[0004] The existing hydraulic servo fatigue testing machine has the following problems: the limiting method of the traditional testing machine is too single, the macadam base is repeatedly pressed during the test, which easily causes the test punch point to change, thereby affecting the test fatigue result of the cement stabilized macadam base, and during the test, the macadam or crushed material is easily scattered, which is inconvenient for the staff to clean up and has safety hazards.

[0005] To solve the above problems, a hydraulic servo fatigue testing machine for cement stabilized macadam base is proposed in this application. UTILITY MODEL CONTENTS

[0006] To solve the problems raised in the background art, the utility model provides a hydraulic servo fatigue testing machine for cement stabilized macadam base, which can greatly improve the stability of macadam base test and effectively prevent the scattering of base raw materials.

[0007] To achieve the above object, the utility model provides the following technical scheme: A kind of hydraulic servo fatigue testing machine for cement stabilized macadam base, including base, the top of the base four corners is fixedly equipped with support, the top of four support is fixedly equipped with top plate, the top of the top plate is fixedly equipped with hydraulic press, frame is fixedly equipped between four support, the side of the base top is equipped with limiting assembly, the surface of the frame is equipped with dust collection assembly;

[0008] The limiting assembly includes a first guide rail, two sliding plates, a first motor, a bidirectional screw rod, and two screw rod nuts. The first guide rail is fixedly arranged on one side of the top of the base. The two sides of the inner wall of the first guide rail are both slidingly connected with a sliding plate. One side of the first guide rail is fixedly provided with a first motor. The transmission shaft of the first motor is fixedly connected with a bidirectional screw rod. The bidirectional screw rod is rotatably connected inside the first guide rail through a bearing. The inner wall of each of the two sliding plates is fixedly provided with a screw rod nut that is threadedly connected with the bidirectional screw rod. The first motor is started to drive the bidirectional screw rod to rotate, so that the two sliding plates can slide relative to each other along the first guide rail.

[0009] As a preferred hydraulic servo fatigue testing machine for cement stabilized macadam base of the utility model, the dust collection assembly includes two dust collection bins, two dust collectors, two extension plates, and two conduits. Two dust collection bins are fixedly arranged on both sides of the frame. A dust collector is fixedly arranged on the top of each of the two dust collection bins. An extension plate is fixedly arranged on the bottom of each of the two dust collection bins. A conduit is fixedly arranged on the surface of each of the two extension plates. One end of each of the two conduits is in communication with one of the two dust collection bins. The two dust collectors are started to generate negative pressure inside the two dust collection bins. The generated crushed materials during the test can be recycled through the two conduits.

[0010] As a preferred hydraulic servo fatigue testing machine for cement stabilized macadam base of the utility model, the surface of each of the two sliding plates is fixedly provided with a linkage plate. The surface of each of the two linkage plates is fixedly provided with a second guide rail. The inner wall of each of the two second guide rails is slidingly connected with a toothed plate. One side of the front surface of each of the two linkage plates is fixedly provided with a second motor. The transmission shaft of each of the two second motors is fixedly connected with a gear. Each of the two gears is meshingly connected with one of the two toothed plates. The two second motors are started to drive the gears to rotate, and at the same time, the two toothed plates are moved downward along the inner walls of the two second guide rails.

[0011] The utility model provides a hydraulic servo fatigue testing machine for cement stabilized macadam base, two bottom ends of the toothed plate are fixedly provided with connecting rods, two bottom ends of the connecting rod are fixedly provided with limit plates, the top of two limit plates is screw -threaded with two screw rods, the bottom of a plurality of screw rods is fixedly provided with a tablet, and the movable two sliding plates and two toothed plates can fix the two sides of the macadam base through two limit plates, and the stability of the macadam base in the test process can be improved again through the rotation of four screw rods.

[0012] The utility model provides a hydraulic servo fatigue testing machine for cement stabilized macadam base, the hydraulic rod of hydraulic press is fixedly connected with fixed rod, one end of fixed rod is fixedly provided with third motor, the transmission shaft of third motor is fixedly connected with the pivot, the surface of pivot is fixedly provided with two test wheels, and the friction of the test macadam base is carried out through the rotation of two test wheels driven by third motor, and the friction degree is controlled through the extension and contraction of the hydraulic rod of hydraulic press, compared with the traditional single stamping, the fatigue degree of the base to the road condition is more easily simulated.

[0013] The utility model provides a hydraulic servo fatigue testing machine for cement stabilized macadam base, the top of the front of base is hinged with baffle.

[0014] The utility model provides a hydraulic servo fatigue testing machine for cement stabilized macadam base, one side of base is fixedly provided with switch panel, the surface of switch panel is equipped with hydraulic press switch, first motor switch, dust collector switch, second motor switch and third motor switch respectively, and the hydraulic press, first motor, two dust collectors, two second motors and third motor are electrically connected with power supply through hydraulic press switch, first motor switch, dust collector switch, second motor switch and third motor switch respectively.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1、On this basis, first guide rail, sliding plate, first motor, bidirectional screw rod, screw rod nut, toothed plate, second guide rail, gear, second motor, limit plate, screw rod and tablet are added to cooperate with each other, can carry out multidirectional location to the macadam base of test according to the size, can greatly improve the stability of macadam base test, and then improve the accuracy of base fatigue test;

[0017] 2、At the same time, dust collecting bin, dust collector, extension plate, duct and baffle are added on this basis, effectively reduce the spatter of base material, further provide safe test environment for test personnel, and the generated material can be recycled. ACCURACY

[0018] The accompanying drawings are used to provide further understanding of the present application, and form a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0019] Figure 1 It is a whole structure schematic view of the present application;

[0020] Figure 2 It is a structure schematic view of the first guide rail of the present application;

[0021] Figure 3 It is a structure schematic view of the dust collecting bin of the present application;

[0022] Figure 4 It is a structure schematic view of the rotating shaft of the present application.

[0023] In the drawings:

[0024] 1, base; 2, support column; 3, top plate; 4, hydraulic machine; 5, frame; 6, limiting assembly; 7, dust collecting assembly; 8, linkage plate; 9, second guide rail; 10, toothed plate; 11, second motor; 12, gear; 13, connecting rod; 14, limiting plate; 15, screw rod; 16, tablet press; 17, fixed rod; 18, third motor; 19, rotating shaft; 20, test wheel; 21, baffle; 22, switch panel; 61, first guide rail; 62, sliding plate; 63, first motor; 64, bidirectional screw rod; 65, screw rod nut; 71, dust collecting bin; 72, dust collector; 73, extension plate; 74, duct. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] EMBODIMENT

[0027] As Figures 1-4 shown;

[0028] A hydraulic servo fatigue testing machine for cement stabilized macadam base, comprising a base 1.

[0029] In this embodiment: the search public (announcement) number: CN202321974303.4 discloses a kind of asphalt concrete fatigue test device, to solve the existing problem in this prior art, as disclosed in the above background art, "existing hydraulic servo fatigue testing machine when using, since the limiting mode of traditional testing machine is too single, broken stone base is repeatedly pressed in test process, it is prone to cause that the test of its test stamping point changes, in turn affect cement stabilized broken stone base test fatigue result, and in test process, it is prone to cause broken stone or broken material splash, inconvenient for staff to clean up, simultaneously there is security risk "Combination uses, this problem is obviously shown and difficult to solve problem, in this regard, to solve this technical problem, limiting component 6 and dust collection component 7 are added in the present application file;

[0030] Further, the top end of the base 1 is fixed with a support 2, and the top end of the four supports 2 is fixed with a top plate 3, and the top end of the top plate 3 is fixed with a hydraulic machine 4, and the four supports 2 are fixed with a frame 5, and one side of the top end of the base 1 is provided with a limiting component 6, and the surface of the frame 5 is provided with a dust collection component 7.

[0031] As shown in Figures 1 to 4

[0032] In combination with the above content: the limiting component 6 includes a first guide rail 61, two sliding plates 62, a first motor 63, a bidirectional screw rod 64 and two screw rod nuts 65, the first guide rail 61 is fixedly arranged on one side of the top end of the base 1, the two sides of the inner wall of the first guide rail 61 are slidably connected with the sliding plates 62, one side of the first guide rail 61 is fixedly provided with the first motor 63, the transmission shaft of the first motor 63 is fixedly connected with the bidirectional screw rod 64, the bidirectional screw rod 64 is rotatably connected in the interior of the first guide rail 61 through a bearing, and the inner walls of the two sliding plates 62 are fixedly provided with the screw rod nuts 65 which are threadedly connected with the bidirectional screw rod 64;

[0033] The surfaces of the two sliding plates 62 are fixedly provided with linkage plates 8, the surfaces of the two linkage plates 8 are fixedly provided with second guide rails 9, the inner walls of the two second guide rails 9 are slidably connected with toothed plates 10, one side of the front surface of each of the two linkage plates 8 is fixedly provided with a second motor 11, the transmission shafts of the two second motors 11 are fixedly connected with gears 12, and the two gears 12 are meshingly connected with the two toothed plates 10 respectively.

[0034] The bottom ends of the two toothed plates 10 are fixedly provided with connecting rods 13, the bottom ends of the two connecting rods 13 are fixedly provided with limiting plates 14, the top ends of the two limiting plates 14 are threadedly connected with two screw rods 15, and the bottom ends of the plurality of screw rods 15 are fixedly provided with pressing plates 16.

[0035] ​In the embodiment, first, the broken stone base to be tested is placed in the middle of the top end of the base 1, then the first motor switch on the surface of the switch panel 22 is opened, the first motor 63 is started to drive the bidirectional screw rod 64 to rotate, then the bidirectional screw rod 64 cooperates with the two screw rod nuts 65 to move the two sliding plates 62 relative to the two linkage plates 8, when the two limiting plates 14 are attached to the two sides of the tested base, the two second motors 11 are started to rotate the two gear wheels 12, at the same time, the two toothed plates 10 are moved downward along the inner walls of the two second guide rails 9, so that the four pressing plates 16 fix the four corners of the top end of the tested base, thereby the stability in the broken stone base test can be greatly improved, and the accuracy of the base fatigue test is improved, and when the volume of the base sample is small, the four pressing plates 16 can be limited by rotating the four screw rods 15.

[0036] In an optional embodiment, the dust collection assembly 7 includes two dust collection bins 71, two dust collection machines 72, two extension plates 73 and two conduits 74, the two dust collection bins 71 are fixedly arranged on the two sides of the frame 5, the top end of each of the two dust collection bins 71 is fixedly provided with the dust collection machine 72, the bottom end of each of the two dust collection bins 71 is fixedly provided with the extension plate 73, the surface of each of the two extension plates 73 is fixedly provided with the conduit 74, and one end of each of the two conduits 74 is in communication with the two dust collection bins 71.

[0037] The front end of the base 1 is hingedly provided with the baffle 21.

[0038] In the embodiment, in the test process, the baffle 21 is rotated to block the test area together with the two limiting plates 14, then the two dust collection machines 72 are started, so that the broken stones and the broken materials generated after the test sample is pressed are respectively introduced into the two dust collection bins 71 through the two conduits 74, thereby the test personnel can be protected and the splashed samples can be collected.

[0039] In an optional embodiment, the hydraulic rod of the hydraulic machine 4 is fixedly connected with the fixed rod 17, one end of the fixed rod 17 is fixedly provided with the third motor 18, the transmission shaft of the third motor 18 is fixedly connected with the rotating shaft 19, and the surface of the rotating shaft 19 is fixedly provided with the two test wheels 20.

[0040] In the embodiment, the rotating shaft 19 and the two test wheels 20 are rotated by starting the third motor 18, at the same time, the two test wheels 20 are pressed to the base sample by the hydraulic rod of the hydraulic machine 4, then the deformation degree of the base sample and the test time are observed to obtain the test data.

[0041] In an alternative embodiment: the base 1 is fixedly provided with a switch panel 22 on one side, the surface of the switch panel 22 is respectively provided with a hydraulic machine switch, a first motor switch, a dust collector switch, a second motor switch and a third motor switch, and the hydraulic machine 4, the first motor 63, the two dust collectors 72, the two second motors 11 and the third motor 18 are respectively electrically connected with the power supply through the hydraulic machine switch, the first motor switch, the dust collector switch, the second motor switch and the third motor switch.

[0042] The working principle and use process of the utility model are as follows: first, the broken stone base to be tested is placed in the middle of the top end of the base 1, then the first motor switch on the surface of the switch panel 22 is turned on, the first motor 63 is started to drive the bidirectional screw rod 64 to rotate, then the bidirectional screw rod 64 is matched with the two screw rod nuts 65 to make the two sliding plates 62 move relative to the two linkage plates 8, when the two limiting plates 14 are attached to the two sides of the tested base, the two second motors 11 are started to make the two gear wheels 12 rotate, at the same time, the two toothed plates 10 are respectively moved downward along the inner walls of the two second guide rails 9, and the four pressing plates 16 are fixed to the four corners at the top end of the tested base, so that the stability in the broken stone base test can be greatly improved, and the accuracy of the base fatigue test is further improved, when the volume of the base sample is small, the four pressing plates 16 are limited to the tested base by rotating the four screw rods 15, the two limiting plates 14 are blocked to the test area by rotating the baffle 21, then the two dust collectors 72 are started, and the broken stones and the broken materials generated after the test sample is pressed are respectively introduced into the two dust collecting bins 71 through the two pipes 74, so that the test personnel can be protected and the splashed samples can be collected, finally, the shaft 19 and the two test wheels 20 are rotated by starting the third motor 18, and the two test wheels 20 are extruded to the base sample by the downward pressure of the hydraulic rod of the hydraulic machine 4, then the deformation degree of the base sample and the test time are observed, and the test data are obtained.

[0043] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. Hydraulic servo fatigue testing machine for cement stabilized macadam base comprising a base (1) characterized in that: The top end of the base (1) is fixedly provided with a support (2) at each corner, the top end of the four supports (2) is fixedly provided with a top plate (3), the top end of the top plate (3) is fixedly provided with a hydraulic machine (4), the four supports (2) are fixedly provided with a frame (5) between, one side of the top end of the base (1) is provided with a limiting assembly (6), the surface of the frame (5) is provided with a dust collecting assembly (7); The limiting assembly (6) comprises a first guide rail (61), two sliding plates (62), a first motor (63), a bidirectional screw rod (64) and two screw rod nuts (65), the first guide rail (61) is fixedly arranged on one side of the top end of the base (1), both sides of the inner wall of the first guide rail (61) are slidably connected with the sliding plates (62), one side of the first guide rail (61) is fixedly provided with the first motor (63), the transmission shaft of the first motor (63) is fixedly connected with the bidirectional screw rod (64), the bidirectional screw rod (64) is rotatably connected in the first guide rail (61) through a bearing, and the inner walls of the two sliding plates (62) are fixedly provided with the screw rod nuts (65) which are screwed with the bidirectional screw rod (64).

2. The hydraulic servo fatigue testing machine for cement stabilized macadam base according to claim 1, characterized in that: The dust collecting assembly (7) comprises two dust collecting bins (71), two dust collecting machines (72), two extension plates (73) and two pipes (74), the two dust collecting bins (71) are fixedly arranged on the two sides of the frame (5) respectively, the top end of each of the two dust collecting bins (71) is fixedly provided with a dust collecting machine (72), the bottom end of each of the two dust collecting bins (71) is fixedly provided with an extension plate (73), the surface of each of the two extension plates (73) is fixedly provided with a pipe (74), and one end of each of the two pipes (74) is communicated with the two dust collecting bins (71) respectively.

3. The hydraulic servo fatigue testing machine for cement stabilized macadam base according to claim 2, characterized in that: The surfaces of the two sliding plates (62) are fixedly provided with linkage plates (8), the surfaces of the two linkage plates (8) are fixedly provided with second guide rails (9), the inner walls of the two second guide rails (9) are slidably connected with toothed plates (10), one side of the front surface of each of the two linkage plates (8) is fixedly provided with a second motor (11), the transmission shafts of the two second motors (11) are fixedly connected with gears (12), and the two gears (12) are meshedly connected with the two toothed plates (10) respectively.

4. The hydraulic servo fatigue testing machine for cement stabilized macadam base according to claim 3, characterized in that: The bottom end of each of the two toothed plates (10) is fixedly provided with a connecting rod (13), the bottom end of each of the two connecting rods (13) is fixedly provided with a limiting plate (14), the top end of each of the two limiting plates (14) is screwedly connected with two screw rods (15), and the bottom end of each of the screw rods (15) is fixedly provided with a pressing piece (16).

5. The hydraulic servo fatigue testing machine for cement stabilized macadam base according to claim 3, characterized in that: The hydraulic rod of the hydraulic machine (4) is fixedly connected with a fixing rod (17), one end of the fixing rod (17) is fixedly provided with a third motor (18), the transmission shaft of the third motor (18) is fixedly connected with a rotating shaft (19), and the surface of the rotating shaft (19) is fixedly provided with two test wheels (20).

6. The hydraulic servo fatigue testing machine for cement stabilized macadam base according to claim 1, characterized in that: The top end of the front surface of the base (1) is hingedly connected with a baffle (21).

7. The hydraulic servo fatigue testing machine for cement stabilized macadam base according to claim 5, characterized in that: One side of the base (1) is fixedly provided with a switch panel (22), the surface of the switch panel (22) is respectively provided with a hydraulic machine switch, a first motor switch, a dust collector switch, a second motor switch and a third motor switch, the hydraulic machine (4), the first motor (63), two dust collectors (72), two second motors (11) and the third motor (18) are respectively electrically connected with the power supply through the hydraulic machine switch, the first motor switch, the dust collector switch, the second motor switch and the third motor switch.

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