CN112964556B - Pavement material strength test device with multiple detection functions - Google Patents
Pavement material strength test device with multiple detection functions Download PDFInfo
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- CN112964556B CN112964556B CN202110189142.7A CN202110189142A CN112964556B CN 112964556 B CN112964556 B CN 112964556B CN 202110189142 A CN202110189142 A CN 202110189142A CN 112964556 B CN112964556 B CN 112964556B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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Abstract
The invention belongs to the field of pavement material detection, and particularly relates to a pavement material strength testing device with multiple detection functions. The invention can cut real pavement materials, fix the real pavement materials in the mounting groove, realize real pavement material detection through the rotation of the tire, and cut a plurality of pavement materials for experiments, so that the detection effect has contrast and good detection effect.
Description
Technical Field
The invention relates to the technical field of pavement material detection, in particular to a pavement material strength test device with multiple detection functions.
Background
Along with the comprehensive development of the traffic industry of China, road construction is extremely important, and the attention of road surface materials and roadbed test and detection methods related to road construction is continuously promoted.
The strength test instrument for pavement materials is an instrument for detecting the strength indexes of the pavement materials of the high-grade highway subgrade and the pavement, and can mainly test the compressive strength, the bending strength, the splitting, the Marshall stability and the like of the pavement materials such as asphalt mixtures and the like.
Most of the existing pavement material strength test devices only have one or two functions, are good in detection effect and cannot simulate real pavement environment, and therefore the pavement material strength test device with multiple detection functions is provided.
Disclosure of Invention
The invention provides a pavement material strength test device with multiple detection functions, which solves the problems of poor detection effect and few detection functions of the existing pavement materials in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pavement material strength test device with multiple detection functions comprises a shell, wherein two fixed columns are arranged in the middle of the shell through a lifting mechanism, a cross rod is fixedly connected between the two fixed columns, the top ends of the fixed columns are rotatably connected with a rotating rod, rotating rollers are arranged at the two ends of the rotating rod, a driving belt is connected between the two rotating rollers positioned on the same side, one rotating rod is connected with an output shaft of a motor, a mounting ring is fixedly connected onto the driving belt through a connecting rod, a mounting column is slidably connected into the mounting ring, a base is fixedly connected to the bottom end of the mounting column, a shock absorber is connected between the base and the mounting ring, a counterweight hopper is arranged at the top end of the mounting column, a top cover is arranged at the top end of the counterweight hopper, rotating shafts are arranged on the two sides of the bottom end of the base through brackets, tires are arranged on the rotating shafts, locking mechanisms for the tires are arranged on the base, and horizontally arranged fixed plates are arranged on the two sides in the shell through supporting brackets, the top end of the fixed plate is provided with a plurality of mounting grooves, the bottom end of each mounting groove is connected with a movable plate in a sliding manner, the top end of each movable plate is provided with a test pavement material fixed inside the corresponding mounting groove, a rotating handle rotatably connected to the bottom end of the fixed plate is arranged below the corresponding mounting groove, a transmission part with a U-shaped section is connected to the corresponding rotating handle in a threaded manner, and the top end of the transmission part extends into the corresponding mounting groove and is fixedly connected with the movable plate;
install liquid pump one on the lateral wall of casing, the input of liquid pump one passes through the inside intercommunication of pipe and casing, and the output of liquid pump one is connected with the catheter, and the one end of catheter is connected with two spray tubes that are located the corresponding fixed plate top respectively, installs a plurality of nozzles on spray tube's the lateral wall.
Preferably, elevating system is including rotating the two-way lead screw of connection in the inside intermediate position of casing, and the outside rigid coupling that the one end of two-way lead screw extends to the casing has the rolling disc, and threaded connection has two sliders on the two-way lead screw, and the top of slider all articulates between a fixed column has the bracing piece.
Preferably, locking mechanism is equipped with the mounting of fixing on the base diapire including installing the brake disc in pivot one end between two brake discs, and the both sides of mounting all are equipped with the swing piece that articulates on the base, all are connected with the spring between swing piece and the mounting, and the rigid coupling has the brake shoe on the swing piece is close to the lateral wall of brake disc, installs the double-end telescopic link that the level set up on the mounting, and the output shaft of double-end telescopic link is located one side of swing piece.
Preferably, a plurality of water guide holes are formed in the movable plate, and drain holes are formed in the bottom end of the side wall of the mounting groove.
Preferably, install pressure sensor on the driving medium, the telescopic link is installed to pressure sensor's response end, and the output shaft of telescopic link extends to the rigid coupling in the mounting groove and has the jacking piece, and jacking piece sliding connection opens the sliding hole that has on the fly leaf.
Preferably, equal rigid coupling has solid fixed ring on the lateral wall of fixed plate, and equal sliding connection has the slide bar that the cross-section is the L type in the fixed ring, and the pressure strip that the level set up is installed on the top of slide bar, and sliding connection is installed on two of fixed plate top and is compressed tightly the pole in the bottom of pressure strip, and the spray tube passes through the support rigid coupling on the top of pressure strip.
Preferably, one side of casing is fixed with acid liquid storage jar and alkaline liquid storage jar through the support, and the bottom of acid liquid storage jar and alkaline liquid storage jar all is through feed liquor pipe and the inside intercommunication of casing, installs the valve on the feed liquor pipe.
Preferably, the movable plate is provided with annular liquid guide channels, a liquid guide pipe is connected between every two adjacent liquid guide channels, a conduction pipe is connected between every two outermost liquid guide channels, and a liquid pump II, a refrigerator and a heater are installed on the conduction pipe.
Preferably, the top end of the fixing plate is movably provided with a plurality of deceleration strips located between the adjacent mounting grooves, and the gradients of the deceleration strips are different.
Preferably, a limiting rod with an L-shaped section is fixedly connected to the side wall of one fixing column, a limiting ring is mounted on the side wall of the shell, and the limiting rod is connected in the limiting ring in a sliding mode.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a pavement material strength test device with multiple detection functions, which can cut real pavement materials, fix the real pavement materials in a mounting groove, realize real pavement material detection through the rotation of a tire, and cut a plurality of pavement materials for experiment, so that the detection effect has contrast and is good;
2. the device can simulate various complex road conditions, can simulate vehicle jolting, vehicle braking and high-speed running of vehicle tires, and can simulate the influence of vehicles with different weights on the road surface.
3. The invention provides a pavement material strength test device with multiple detection functions, which can simulate the influence of rainwater, acid-base liquid, high temperature and low temperature on a pavement material and detect the strength of the pavement material in different environments.
Drawings
FIG. 1 is a perspective view of a pavement material strength testing device with multiple detection functions according to the present invention;
FIG. 2 is a schematic connection diagram of a housing, a lifting mechanism, a fixing column and a transmission belt of the pavement material strength testing device with multiple detection functions, provided by the invention;
FIG. 3 is a schematic structural diagram of a fixing plate and a connecting member thereon of a pavement material strength testing device with multiple detection functions according to the present invention;
FIG. 4 is a schematic connection diagram of a top cover, a counterweight bucket, a mounting ring, a base, a mounting seat, a tire and an upper locking mechanism of the pavement material strength testing device with multiple detection functions according to the present invention;
FIG. 5 is a schematic structural diagram of a fixing plate and an installation groove thereon of the pavement material strength testing device with multiple detection functions according to the present invention;
FIG. 6 is a cross-sectional view of a fixing plate of the pavement material strength testing apparatus with multiple detection functions according to the present invention;
fig. 7 is a schematic structural diagram of a movable plate and a liquid guide channel of a pavement material strength testing apparatus with multiple detection functions according to the present invention.
In the figure: 1 shell, 2 liquid inlet pipes, 3 acid liquid storage tanks, 4 alkaline liquid storage tanks, 5 top covers, 6 counterweight hoppers, 7 nozzles, 8 liquid spraying pipes, 9 two-way screw rods, 9-1 rotating discs, 9-2 sliding blocks, 9-3 supporting rods, 10 liquid guide pipes, 11 liquid pump I, 12 refrigerators, 13 heaters, 14 limiting rings, 15 limiting rods, 16 fixing columns, 17 rotating rollers, 18 transmission belts, 19 mounting rings, 20 connecting rods, 21 fixing plates, 21-1 mounting grooves, 22 test pavement materials, 23 pressing plates, 24 pressing rods, 25 sliding rods, 26 fixing rings, 27 supporting frames, 28 rotating handles, 29 transmission pieces, 30 pressure sensors, 31 telescopic rods, 32 movable plates, 32-1 liquid guide channels, 33 jacking blocks, 34 bases, 35 tires, 36 brake discs, 37 rotating shafts, 38 double-head telescopic rods, 39, 40, 41 spring brake shoes, 40 spring brake shoes, 35 pressure sensors, 36 brake shoes, 37 rotating shafts, 38 double-head telescopic rods, 39 brake shoes, 40, 41 spring brake shoes, 42 swing blocks, 43 mount posts, 44 dampers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-7, a pavement material strength test device with multiple detection functions comprises a shell 1, two fixing columns 16 are mounted in the middle of the shell 1 through a lifting mechanism, the lifting mechanism comprises a bidirectional screw rod 9 rotatably connected to the middle of the inside of the shell 1, one end of the bidirectional screw rod 9 extends to the outside of the shell 1 and is fixedly connected with a rotating disc 9-1, two sliders 9-2 are connected to the bidirectional screw rod 9 in a threaded manner, and a supporting rod 9-3 is hinged between the top end of each slider 9-2 and one fixing column 16;
the limiting rod 15 with the L-shaped cross section is fixedly connected to the side wall of one fixing column 16, the limiting ring 14 is mounted on the side wall of the shell 1, the limiting rod 15 is connected into the limiting ring 14 in a sliding mode, and through the arrangement of the lifting mechanism, when a pavement material is mounted or a shearing force strength test on the pavement material is achieved, the pressing plate and the pressing rod can be conveniently moved onto the fixing plate 21 to test the pavement material.
A cross bar is fixedly connected between two fixed columns 16, the top ends of the fixed columns 16 are rotatably connected with a rotating rod, two ends of the rotating rod are respectively provided with a rotating roller 17, a transmission belt 18 is connected between the two rotating rollers 17 positioned on the same side, one rotating rod is connected with an output shaft of a motor, the motor is arranged on one fixed column 16 through a support, the transmission belt 18 is respectively fixedly connected with an installation ring 19 through a connecting rod 20, the installation ring 19 is internally connected with an installation column 43 in a sliding way, the bottom end of the installation column 43 is fixedly connected with a base 34, a shock absorber 44 is connected between the base 34 and the installation ring 19, the top end of the installation column 43 is provided with a counterweight bucket 6, the top end of the counterweight bucket 6 is provided with a top cover 5, two sides of the bottom end of the base 34 are respectively provided with a rotating shaft 37 through supports, tires 35 are arranged on the rotating shafts 37, the tires 25 are tires with hubs, and can be replaced by various types of tires according to needs, and install the locking mechanism to tire 35 on the base 34, locking mechanism is including installing the brake disc 36 in pivot 37 one end, be equipped with the mounting 39 of fixing on base 34 diapire between two brake discs 36, the both sides of mounting 39 all are equipped with the swing piece 42 that articulates on base 34, all be connected with spring 41 between swing piece 42 and the mounting 39, swing piece 42 is close to the rigid coupling on the lateral wall of brake disc 36 and has brake shoe 40, the double-end telescopic link 38 of level setting is installed on mounting 39, the output shaft of double-end telescopic link 38 is located one side of swing piece 42, can simulate the friction on ground when the tire brakes through locking mechanism.
The testing device comprises a shell 1, a plurality of testing units, a plurality of test pieces 22 and a plurality of fixing plates 21, wherein the two sides in the shell 1 are respectively provided with a horizontally arranged fixing plate 21 through supporting frames 27, the top end of each fixing plate 21 is provided with a plurality of mounting grooves 21-1, the bottom ends of the mounting grooves 21-1 are connected with movable plates 32 in a sliding manner, the top ends of the movable plates 32 are provided with the testing pavement materials 22 fixed in the mounting grooves 21-1, a rotating handle 28 rotatably connected to the bottom end of the fixing plate 21 is arranged below the mounting groove 21-1, the rotating handle 28 is connected with a transmission member 29 with a U-shaped section in a threaded manner, and the top end of the transmission member 29 extends into the mounting groove 21-1 and is fixedly connected with the movable plates 32;
install liquid pump 11 on the lateral wall of casing 1, the input of liquid pump 11 passes through the inside intercommunication of pipe and casing 1, and the output of liquid pump 11 is connected with catheter 10, and catheter 10's one end is connected with two spray tubes 8 that are located corresponding fixed plate 21 top respectively, installs a plurality of nozzles 7 on spray tube 8's the lateral wall.
The movable plate 32 is provided with a plurality of water guiding holes, and the bottom end of the side wall of the mounting groove 21-1 is provided with a water discharging hole.
The transmission member 29 is provided with a pressure sensor 30, the sensing end of the pressure sensor 30 is provided with an expansion link 31, the output shaft of the expansion link 31 extends into the mounting groove 21-1 and is fixedly connected with a jacking block 33, and the jacking block 33 is slidably connected in a sliding hole formed in the movable plate 32.
All the rigid coupling has solid fixed ring 26 on the lateral wall of fixed plate 21, and equal sliding connection has the cross-section to be the slide bar 25 of L type in solid fixed ring 26, and the pressure strip 23 that the level set up is installed on the top of slide bar 25, and two pressure bars 24 of sliding connection on fixed plate 21 top are installed to the bottom of pressure strip 23, and spray tube 8 passes through the support rigid coupling on the top of pressure strip 23.
One side of the shell 1 is fixed with an acid liquid storage tank 3 and an alkaline liquid storage tank 4 through a support, the bottom ends of the acid liquid storage tank 3 and the alkaline liquid storage tank 4 are communicated with the inside of the shell 1 through a liquid inlet pipe 2, and a valve is arranged on the liquid inlet pipe 2.
The movable plate 32 is provided with annular liquid guide channels 32-1, liquid guide pipes are connected between the adjacent liquid guide channels 32-1, a conduction pipe is connected between the two outermost liquid guide channels 32-1, a second liquid pump, a refrigerator 12 and a heater 13 are installed on the conduction pipe, the refrigerator 12 and the heater 13 adopt the refrigerator and the heater in the prior art, synthetic heat conduction oil is filled in the liquid guide channels 32-1, ditolyl ether heat conduction oil can be adopted, and high-temperature and low-temperature transmission can be rapidly realized under the driving of the second liquid pump.
The top end of the fixing plate 21 is movably provided with a plurality of deceleration strips (not shown in the figure) positioned between the adjacent mounting grooves 21-1, the gradients of the deceleration strips are different, the bottom ends of the deceleration strips are provided with inserting rods, the fixing plate 21 is provided with a plurality of inserting holes, the bottom ends of the inserting rods penetrate through the inserting holes and are in threaded connection with bolts, and the bumping condition of a vehicle passing through a road surface can be simulated.
When the device is used, test pavement materials at different positions are taken on a constructed pavement according to the size of the installation groove, then the taken test pavement materials 22 are placed in the installation groove 21-1, then the rotating handle 28 is rotated according to the thickness of the test pavement materials, the rotating handle 28 is in threaded connection with the transmission member 29 to drive the transmission member 29 to move up and down, so that supporting force is provided for the test pavement materials, meanwhile, the top surface of the test pavement materials 22 and the top surface of the fixing plate 21 are positioned on the same horizontal plane, then cement is filled in gaps between the test pavement materials 22 and the installation groove, and a test is started after the test pavement materials are solidified;
adding a metal counterweight block with proper weight into a counterweight bucket 6, then closing a top cover 5, rotating a rotating disc 9-1 at one end of a bidirectional screw rod 9 to drive the bidirectional screw rod 9 to rotate, connecting the bidirectional screw rod 9-1 with two slide blocks 9-2 in a threaded manner to drive the slide blocks 9-2 to move on the bidirectional screw rod 9-1, thereby driving a fixed column 16 to move up and down through a support rod 9-3, driving a mounting column 43 to move down through a rotating roller 17, a transmission belt 18, a mounting ring 19 and a connecting rod 20 by the fixed block 16, enabling a tire to be in contact with a gravity fixed plate 21 directly passing through the upper part of the tire, starting a motor, driving the rotating roller 17, the transmission belt 18, the mounting ring 19 and the connecting rod 20 to move by the motor, thereby driving the tire 35 on a base 35 to move on the fixed plate 21 and a test pavement material 22, and realizing a real pavement material test, the tire 35 passes through the deceleration strip to simulate the collision condition with the road surface passing through the deceleration strip on the normal road surface, when the tire 25 moves, the mounting ring 19 slides up and down on the mounting column 43 to drive the shock absorber 44 to absorb shock and buffer, meanwhile, the rotating roller 17 is smaller up to now, when the transmission belt 18 rotates, the mounting ring 19 slides up and down on the mounting column 43, and the movement of the tire 35 is not influenced;
the weight of the balancing weight in the balancing weight hopper 6 can be changed, and the influence of vehicles with different weights on the materials in the balancing weight hopper is simulated;
when the tire 35 rotates, the output shaft of the double-head telescopic rod 38 can be controlled to stretch, the output shaft of the double-head telescopic rod 38 drives the swinging block 42 to swing, the swinging block 42 drives the brake shoe 40 to rub and brake with the brake disc 36, and the influence of impact force and friction force on the strength of a road material during braking in the running process of a vehicle is simulated;
meanwhile, the rainy weather can be simulated, water is poured into the shell 1, then the first liquid pump 11 is started, the first liquid pump 11 pumps the water in the shell 1, and then the water is sprayed out through the nozzle 7 on the liquid spraying pipe 8 through the liquid guiding pipe 10, so that the influence of the rainy weather on the road material is simulated;
acid-base liquid can be added into the shell 1 through the acid liquid storage tank 3 and the alkaline liquid storage tank 4, the influence of acid-base environment on the pavement material is simulated, the method is particularly suitable for pavement material tests in regions with high pH value, and the influence of acid-base corrosion on the pavement material is great;
meanwhile, the influence of high temperature on the pavement material can be simulated, the heater 13 heats the pavement material, the refrigerator 12 does not work, the liquid pump II is started to drive the heat conduction oil to flow in the liquid guide channel 32-1, and the heat is transferred to the test pavement material 22 through the heat conduction oil and the movable plate 32, so that the influence of the high temperature on the pavement material strength is simulated;
similarly, the influence of low temperature on the pavement material can be simulated, the heater 13 does not work, the refrigerator 12 refrigerates, the liquid pump II is started to drive the heat conduction oil to flow in the liquid guide channel 32-1, and the low-temperature heat is transferred to the test pavement material 22 through the heat conduction oil and the movable plate 32, so that the influence of the low temperature on the pavement material strength is simulated;
at the time of the previous operation, the tire 35 is always reciprocated on the fixed plate 22 and the test pavement 22;
or the test can be carried out when the test pavement material 22 is subjected to the shearing force, the rotating disc 9-1 at one end of the bidirectional screw rod 9 is rotated reversely to drive the bidirectional screw rod 9 to rotate, the bidirectional screw rod 9-1 is in threaded connection with the two slide blocks 9-2 to drive the slide blocks 9-2 to move on the bidirectional screw rod 9-1, so that the fixing column 16 is driven by the support rod 9-3 to move upwards, the fixing block 16 drives the mounting column 43 to move upwards through the rotating roller 17, the driving belt 18, the mounting ring 19 and the connecting rod 20 to separate the tire from the fixing plate 21, then the pressing plate 23 is pulled to drive the sliding rod 25 to slide in the fixing ring 26, the pressing plate 23 drives the pressing rod 24 to move to the position above the fixing partition plate 21 and the test pavement material 22 thereon, the pressing rod 24 presses the test pavement material 22, and then the output shaft of the telescopic rod 31 is started to stretch and retract, the output shaft of telescopic link 31 drives jacking piece 33 upward movement, and jacking piece 33 is located between two pressure bars 24, and jacking piece 33 constantly realizes the jacking to test pavement material 22, until pavement material 22 breaks, detects the biggest shearing force when it breaks through pressure sensor 30.
This device can cut real road surface material and then fix in the mounting groove, then the rotation through the tire, realize real road surface material and detect, cut polylith road surface material moreover and experiment, the testing effect has the contrast nature, detection effect is good, and can simulate the vehicle and bump, the vehicle brake, the high-speed operation of vehicle tire, can simulate the influence of different weight vehicles to the road surface simultaneously, can simulate rainwater simultaneously, acid-base liquid, the influence of high temperature and low temperature to road surface material, detect the intensity of road surface material under different environment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a road surface material strength test device with multiple test function, includes casing (1), its characterized in that, two fixed columns (16) are installed through elevating system to the intermediate position of casing (1), and the rigid coupling has the horizontal pole between two fixed columns (16), and the top of fixed column (16) is rotated and is connected with the dwang, and live-rollers (17) are all installed at the both ends of dwang, are located and are connected with drive belt (18) between two live-rollers (17) of same side, the output shaft of a dwang and motor, all there is mounting ring (19) through connecting rod (20) rigid coupling on drive belt (18), and sliding connection has erection column (43) in mounting ring (19), and the bottom rigid coupling of erection column (43) has base (34), is connected with bumper shock absorber (44) between base (34) and mounting ring (19), and counter weight fill (6) is installed on the top of erection column (43), the top cover (5) is installed on the top end of the counterweight bucket (6), the rotating shafts (37) are installed on two sides of the bottom end of the base (34) through supports, tires (35) are installed on the rotating shafts (37), the locking mechanism for the tires (35) is installed on the base (34), horizontally arranged fixing plates (21) are installed on two sides of the interior of the shell (1) through supporting frames (27), a plurality of mounting grooves (21-1) are formed in the top end of the fixing plates (21), movable plates (32) are connected in the bottom ends of the mounting grooves (21-1) in a sliding mode, test pavement materials (22) fixed in the mounting grooves (21-1) are arranged on the top ends of the movable plates (32), rotating handles (28) rotatably connected to the bottom ends of the fixing plates (21) are arranged below the mounting grooves (21-1), and transmission pieces (29) with U-shaped sections are connected to the rotating handles (28) in a threaded mode, the top end of the transmission piece (29) extends into the mounting groove (21-1) and is fixedly connected with a movable plate (32);
the side wall of the shell (1) is provided with a first liquid pump (11), the input end of the first liquid pump (11) is communicated with the inside of the shell (1) through a guide pipe, the output end of the first liquid pump (11) is connected with a liquid guide pipe (10), one end of the liquid guide pipe (10) is connected with two liquid spraying pipes (8) which are respectively positioned above corresponding fixing plates (21), the side wall of each liquid spraying pipe (8) is provided with a plurality of nozzles (7), the lifting mechanism comprises a bidirectional screw rod (9) which is rotatably connected to the middle position inside the shell (1), one end of the bidirectional screw rod (9) extends to the outside of the shell (1) and is fixedly connected with a rotating disc (9-1), the bidirectional screw rod (9) is in threaded connection with two sliding blocks (9-2), supporting rods (9-3) are hinged between the top ends of the sliding blocks (9-2) and a fixing column (16), and a limiting rod (15) with an L-shaped section is fixedly connected to the side wall of one fixing column (16), the side wall of the shell (1) is provided with a limiting ring (14), and a limiting rod (15) is connected in the limiting ring (14) in a sliding manner.
2. The pavement material strength test device with multiple detection functions according to claim 1, wherein the locking mechanism comprises a brake disc (36) installed at one end of a rotating shaft (37), a fixing piece (39) fixed on the bottom wall of the base (34) is arranged between the two brake discs (36), swing blocks (42) hinged on the base (34) are arranged on two sides of the fixing piece (39), springs (41) are connected between the swing blocks (42) and the fixing piece (39), brake shoes (40) are fixedly connected to the side walls, close to the brake disc (36), of the swing blocks (42), double-end telescopic rods (38) horizontally arranged are installed on the fixing piece (39), and output shafts of the double-end telescopic rods (38) are located on one side of the swing blocks (42).
3. The pavement material strength testing device with multiple detection functions according to claim 1, wherein the movable plate (32) is provided with a plurality of water guide holes, and the bottom end of the side wall of the mounting groove (21-1) is provided with a drain hole.
4. The pavement material strength test device with multiple detection functions according to claim 1, wherein the transmission member (29) is provided with a pressure sensor (30), the sensing end of the pressure sensor (30) is provided with a telescopic rod (31), an output shaft of the telescopic rod (31) extends into the mounting groove (21-1) and is fixedly connected with a jacking block (33), and the jacking block (33) is slidably connected in a sliding hole formed in the movable plate (32).
5. The pavement material strength test device with multiple detection functions according to claim 1, wherein the side walls of the fixing plate (21) are fixedly connected with fixing rings (26), the fixing rings (26) are internally and slidably connected with sliding rods (25) with L-shaped sections, the top ends of the sliding rods (25) are provided with horizontally arranged pressing plates (23), the bottom ends of the pressing plates (23) are provided with two pressing rods (24) slidably connected to the top ends of the fixing plate (21), and the liquid spraying pipes (8) are fixedly connected to the top ends of the pressing plates (23) through supports.
6. The pavement material strength test device with multiple detection functions according to claim 1, wherein an acid liquid storage tank (3) and an alkaline liquid storage tank (4) are fixed on one side of the housing (1) through a support, the bottom ends of the acid liquid storage tank (3) and the alkaline liquid storage tank (4) are communicated with the inside of the housing (1) through a liquid inlet pipe (2), and a valve is installed on the liquid inlet pipe (2).
7. The pavement material strength test device with multiple detection functions according to claim 1, wherein the movable plate (32) is provided with annular liquid guide channels (32-1), a liquid guide pipe is connected between adjacent liquid guide channels (32-1), a conduction pipe is connected between two outermost liquid guide channels (32-1), and a second liquid pump, a refrigerator (12) and a heater (13) are mounted on the conduction pipe.
8. The pavement material strength testing device with multiple detection functions according to claim 1, wherein a plurality of speed reducing belts positioned between adjacent mounting grooves (21-1) are movably mounted at the top end of the fixing plate (21).
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| CN202110189142.7A CN112964556B (en) | 2021-02-19 | 2021-02-19 | Pavement material strength test device with multiple detection functions |
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