CN101299039B - Asphalt mixture die setting molding experiment instrument - Google Patents

Abstract

An asphalt mixture test mold forming experimental instrument, the traveling wheel placed on the guide rail is arranged on the traveling wheel shaft at the lower part of the mobile frame, and the left end of the mobile frame is provided with two columns with a discharge adjustment mechanism, and a The discharge adjustment plate, the right side of the column on the mobile frame is equipped with a stirring box with a stirrer installed inside, the bottom of the stirring box is provided with a stirring material door connected with the material door operating mechanism, and the right end of the mobile frame is provided with a reduction motor. The reduction motor is connected with the traveling wheel and the agitator through a transmission mechanism, and a clutch is arranged on the traveling wheel. The present invention has been tested for a long period of time and shows that the present invention can prepare various types of asphalt mixtures according to different geometric parameters and different process conditions under on-site construction conditions. It is a ministerial standard for molds and can be used for the construction of asphalt roads and various performance research tests.

Description

Asphalt Mixture Test Mold Forming Experimental Apparatus

technical field

The invention belongs to the technical field of auxiliary equipment for building, repairing, repairing or removing roads or similar pavements, and in particular relates to equipment for conducting experiments on new roads.

Background technique

The slurry seal layer is a paste-like emulsion mortar that is mixed with emulsion and sand or gravel chips with water, and then spread on the original road surface and compacted to form a seal layer. It is mainly used for the repair and maintenance of asphalt pavement on ordinary roads, laying wear-resistant layers on gravel pavement, maintenance of cement concrete pavement and bridge deck, expressway asphalt pavement and new asphalt road. This sealant improves the smoothness, water resistance and skid resistance of the pavement.

In recent years, on the basis of ordinary slurry seals, modified slurry seals have been successfully developed, and high molecular polymers are added to improve ordinary emulsified asphalt materials. This modified emulsified asphalt slurry seal is called " Surface fine treatment", referred to as "micro surface treatment". The micro-surfacing uses special equipment to mix polymer modified emulsified asphalt, aggregates, fillers, water and additives in a certain proportion to form a slurry mixture and spread it quickly on the original road surface. Thin structure with open traffic inside.

In order to ensure the construction quality and determine the optimal ratio of raw materials, before constructing the asphalt concrete pavement and paving the slurry seal layer and the surface layer of the micro-surface, the ratio of the raw materials must first be determined, and the various ratios The asphalt mixture was prepared as a test piece, and then according to the standards issued by the Ministry of Communications, two sets of asphalt mixture test pieces, each group of 4 pieces of asphalt mixture test pieces, were installed on the road testing machine for testing, simulating the various conditions of vehicles walking on the asphalt road. In order to determine the optimal ratio of the asphalt mixture specimen, observe the changes of the surface of the asphalt mixture specimen.

There is a big difference between the laboratory test of asphalt mixture specimens and the actual construction site conditions in the material ratio and construction effect. On the basis of laboratory test pieces, usually build a test section on the road for trial operation, observe the changes of the road, and then determine the ratio of various raw materials and construction technology. It is very inconvenient and uneconomical to use a micro-surfacing paver to pave the test run road because the model is large and uses a lot of materials. Especially before the construction of new projects, a lot of manpower, material resources and time were wasted due to repeated material ratio and construction process tests. But at present domestic also does not have a kind of laboratory test mold forming experiment instrument, can imitate the pavement of actual paving.

Contents of the invention

The technical problem to be solved by the present invention is to provide an asphalt mixture test mold that can imitate the actual paved road surface, has reasonable design, good use effect, multiple uses, and complete functions, and can prepare various asphalt mixture test molds. Experimental apparatus.

The technical solution adopted to solve the above-mentioned technical problems is: set the walking wheel placed on the guide rail on the traveling wheel shaft at the lower part of the mobile frame, set two columns with a discharge adjustment mechanism installed on the left end of the mobile frame, and install a The discharge adjustment plate, the right side of the column on the mobile frame is equipped with a stirring box with a stirrer inside, the bottom of the stirring box is provided with a mixing material door connected with the material door operating mechanism, and the right end of the mobile frame is provided with a deceleration motor. The reduction motor is connected with the traveling wheel and the agitator through a transmission mechanism, and a clutch is arranged on the traveling wheel.

The discharge adjustment mechanism of the present invention is as follows: the upper end of the column frame is provided with an adjustment screw connected with the hand wheel, the lower end is provided with a lifting plate connected with the discharge adjustment plate, and the upper end of the lifting plate is provided with a lifting plate connected with the adjustment screw. Adjustment nut.

The operating mechanism of the material door of the present invention is as follows: the guide sleeve for axially processing the slot hole on the side is arranged on the mixing box, the rack connecting rod whose lower end is connected with the horizontal lever is arranged in the guide sleeve, and the two ends of the horizontal lever are connected with the upper end of the vertical lever. Connection, the lower end of the vertical lever is provided with the material door lever connected with the material door, the material door shaft of the material door is connected with the mixing box, the positioning groove is processed on the positioning shaft of the mixing box, and the driving gear is connected with the material door control handle It is arranged on the positioning shaft, the driving gear meshes with the driven gear arranged on the mixing box, the driven gear meshes with the rack connecting rod, and the lower end side of the operating handle of the material door is provided with a positioning block overlapping with the positioning groove.

The clutch of the present invention is as follows: the outer end of the pull-key shaft installed in the central axial hole of the travel wheel shaft of the travel wheel is provided with a clutch handle; The pull key that the wheel is movably connected, the compression spring overlapping with the pull key is also arranged on the pull key shaft.

The walking wheel shaft of the present invention is a hollow shaft, and a keyway is axially processed in the axial hole of the walking wheel shaft.

The present invention has been tested for a long period of time and shows that the present invention can prepare various types of asphalt mixtures according to different geometric parameters and different process conditions under on-site construction conditions. According to the ministerial standard of the model, it can conduct on-site demonstrations of various types of asphalt mixtures and construction technology issues, and realize multiple tests and physical and chemical analyzes on the physical and chemical properties of road materials, gradation adjustments, process conditions, and construction effects. The invention has the advantages of reasonable design, good use effect, multiple uses, complete functions, and the ability to prepare various types of asphalt mixture test models, etc., and can be used for the construction of asphalt roads and various performance research tests.

Description of drawings

Fig. 1 is a front view of Embodiment 1 of the present invention.

FIG. 2 is a top view of FIG. 1 .

FIG. 3 is a schematic structural view of the discharge adjustment mechanism 8 in FIG. 1 .

FIG. 4 is a schematic structural view of the material door operating mechanism 5 in FIG. 1 .

FIG. 5 is a schematic diagram of the connection between the mixing box 4 and the material door operating mechanism 5 in FIG. 1 .

FIG. 6 is a schematic structural diagram of the clutch 12 in FIG. 1 .

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.

Example 1

In Figures 1, 2, 3, and 5, the asphalt mixture trial molding experimental instrument of this embodiment consists of a guide rail 1, a column 2, a stirring sprocket chain mechanism 3, a mixing box 4, a material door operating mechanism 5, and a walking sprocket Chain mechanism 6, decelerating motor 7, discharge adjustment mechanism 8, agitator 9, mobile frame 11, clutch 12, travel wheel 13, travel wheel shaft 14, discharge adjustment plate 15, stirring material door 16 are connected to form.

4 road wheels 13 are installed on the bottom of the mobile frame 11 with the road wheel shaft 14, the road wheel shaft 14 is a hollow shaft, and the central axial hole of the road wheel shaft 14 is processed with an axial keyway, and the road wheels 13 are placed on the guide rail 1, The traveling wheels 13 can roll and move back and forth on the guide rail 1 . The left end of the mobile frame 11 is welded and connected with two columns 2, a discharge adjustment plate 15 is installed between the two columns 2, a discharge adjustment mechanism 8 is installed on the two columns 2, the discharge adjustment mechanism 8 and the discharge adjustment plate 15 are fixedly connected with threaded fastening connectors, and the discharge adjustment mechanism 8 is operated to adjust the opening of the discharge adjustment plate 15. The right side of the column 2 on the mobile frame 11 is fixedly connected with a stirring box 4 with a threaded fastening connector, and the mixture for the slurry sealing layer or the mixture for the micro-surfacing or other tests can be stirred and mixed in the stirring box 4. A stirrer 9 is installed in the mixing box 4, and the bottom of the mixing box 4 is hingedly equipped with a stirring material door 16, which is connected with the material door operating mechanism 5 by a coupling piece, and the mixing material door can be opened by operating the material door operating mechanism 5 16. The asphalt mixture in the mixing tank 4 flows out from the mixing material door 16 into the test piece mold frame 10 on the laboratory floor. On the mobile frame 11, the right side is fixedly connected with a geared motor 7 with a threaded fastening connector, and the geared motor 7 is a power element that is connected with the speed reducer. Chain mechanism 6 is connected with walking wheel 13, and reduction motor 7 is connected with agitator 9 with stirring sprocket chain mechanism 3, and walking sprocket chain mechanism 6 and stirring sprocket chain mechanism 3 adopt driving sprocket, driven sprocket, The chain constitutes a conventional transmission mechanism in mechanical design, and is an embodiment of the transmission mechanism, and other transmission mechanisms, such as a belt transmission mechanism, can also be used. The reduction motor 7 drives the agitator 9 to rotate the mixing material through the stirring sprocket chain mechanism 3, and the reduction motor 7 drives the traveling wheel 13 to roll and move on the guide rail 1 through the walking sprocket chain mechanism 6. Clutch 12 is installed on the traveling wheel 13, and clutch 12 is operated, and traveling sprocket chain mechanism 6 is overlapped with traveling wheel 13 or disengages, and the movement of control mobile frame 11 on guide rail 1 or stops.

In FIG. 3 , the discharge adjustment mechanism 8 of this embodiment is composed of an adjustment hand wheel 8-1, a column frame 8-2, an adjustment screw 8-3, an adjustment nut 8-4, and a lifting plate 8-5. The upper end of the column frame 8-2 is connected with an adjustment lead screw 8-3 through threaded connection, and the upper end of the adjustment lead screw 8-3 is fixedly connected with a handwheel 8-1 with a threaded fastening joint, and the lifting plate 8-5 is connected with a threaded fastening Components are connected with the discharge adjustment plate 15, and the upper end of the lifting plate 8-5 is welded and connected with an adjustment nut 8-4, and the adjustment nut 8-4 is connected with the adjustment screw 8-3 by threads. Rotate and adjust the hand wheel 8-1, adjust the screw 8-3 to rotate, adjust the nut 8-4 to move up and down, drive the lifting plate 8-5 to move up and down, and the discharge adjustment plate 15 to move up and down to realize the control of loading the test piece mold frame 10 The thickness of the inner asphalt mixture.

In Fig. 1, 4, 5, material door operating mechanism 5 of the present embodiment is made of material door shaft 5-1, horizontal lever 5-2, rack connecting rod 5-3, material door lever 5-4, vertical lever 5 -5, guide sleeve 5-6, driven gear 5-7, positioning shaft 5-8, material door control handle 5-9, driving gear 5-10 are connected to form. The guide sleeve 5-6 is welded and connected to the mixing box 4, the side of the guide sleeve 5-6 is axially processed with slot holes, the rack connecting rod 5-3 is set in the guide sleeve 5-6, and can be inserted into the guide sleeve 5-6. Moving up and down. The lower end of the rack connecting rod 5-3 is connected with the middle part of the horizontal lever 5-2 with a threaded fastening connector, and the two ends of the horizontal lever 5-2 are connected with the upper end of the vertical lever 5-5 with a threaded fastening connector. The lower end of the lever 5-5 is connected with the upper end of the material gate lever 5-4 with a threaded fastening connector, and the lower end of the material gate lever 5-4 is connected with the stirring material gate 16, and the stirring material gate 16 is connected with the material gate shaft 5-1. Stirring box 4 hinged. The positioning shaft 5-8 is fixedly connected to the mixing box 4 with a threaded fastening connector, and two rectangular positioning grooves are processed on the positioning shaft 5-8, the driving gear 5-10 is set outside the positioning shaft 5-8, and the material door is operated The handle 5-9 is fixedly connected with the driving gear 5-10 with a connecting piece, the driving gear 5-10 can rotate around the positioning shaft 5-8, and the driving gear 5-10 is connected with the driven gear 5-7 installed on the mixing box 4 The driven gear 5-7 meshes with the rack connecting rod 5-3 installed in the guide sleeve 5-6, and the lower end side of the material door control handle 5-9 is welded with a rectangular positioning block, and the material door control handle 5 The positioning block on the -9 lower end overlaps or disengages with the positioning groove on the positioning shaft 5-8 to play a positioning role. The driving gear 5-10 does not rotate, the mixing material door 16 on the mixing box 4 is closed, and the material door control handle 5-9 is pulled upwards, and the positioning block on the lower end of the material door control handle 5-9 and the positioning groove on the positioning shaft 5-8 Disengage, turn the material door control handle 5-9, the driving gear 5-10 rotates, the rack connecting rod 5-3 moves upwards and the mixing material door 16 is opened, pull the positioning block and the positioning shaft 5 at the lower end of the material door control handle 5-9 Another positioning slot on the -8 overlaps, and the mixing material door 16 is opened and locked.

In FIGS. 1 and 6, the clutch 12 of this embodiment is composed of a compression spring 12-1, a pull key shaft 12-2, a clutch handle 12-3, a pin 12-4, and a pull key 12-5. The outer end of the keyed shaft 12-2 is fixedly connected with a clutch handle 12-3 with a threaded fastening connector, and the keyed shaft 12-2 is installed in the axial hole at the center of the walking wheel shaft 14, on the keyed shaft 12-2. Hinged with pin 12-4, draw key 12-5 is arranged, draw key 12-5 can rotate around pin 12-4, draw key 12-5 just in time is located in the axial keyway of walking wheel 13, also installs on draw key shaft 12-2 There is a compression spring 12-1, and the compression spring 12-1 ejects the pull key 12-5 radially outward. The operator pushes the clutch handle 12-3 forward, pushes the pull key 12-5 into the axial keyway of the driven sprocket of the traveling sprocket chain mechanism 6, the axial keyway of the traveling wheel shaft 14 and the keyway of the traveling wheel 13, and The driven sprocket of traveling wheel axle 14, traveling sprocket chain mechanism 6, traveling wheel 13 are overlapped, and the driven sprocket of traveling sprocket and chain mechanism 6 drives two traveling wheels 13 to rotate. The operator pulls the clutch handle 12-3 backward, the driven sprocket of the traveling sprocket chain mechanism 6 is disengaged from the traveling wheel 13, the driven sprocket of the traveling sprocket chain mechanism 6 rotates, that is, idling, and the traveling wheel 13 does not rotate , to achieve clutch.

The asphalt mixture test mold forming experimental instrument with this structure can prepare various types of asphalt mixture according to different geometric parameters and different process conditions under on-site construction conditions. The prepared test mold meets the experimental requirements and can be carried out. On-site demonstration of various types of asphalt mixtures and construction technology issues, to achieve multiple tests and physical and chemical analysis of the physical and chemical properties of road materials, gradation adjustment, process conditions and construction effects.

Claims (5)

1. asphalt mixture die setting molding experiment instrument; It is characterized in that: go up setting at movable stand (11) lower running wheel shaft (14) and be placed on the road wheel (13) on the guide rail (1); Movable stand (11) is gone up two columns (2) that the left end setting is equipped with discharging adjusting mechanism (8); Discharging adjustment plate (15) is installed between two columns (2), and what stirrer (9) was installed in the right side of movable stand (11) upper pillar stand (2) is provided with has an agitator tank (4), and the bottom of agitator tank (4) is provided with the stirring bin gate (16) that links with bin gate operating mechanism (5); The lower end of stirring bin gate (16) is provided with and is positioned at the ground test piece mould frame in laboratory (10); Movable stand (11) is gone up right-hand member and is provided with reducing motor (7), and reducing motor (7) links through gear train and road wheel (13) and stirrer (9), and road wheel (13) is provided with clutch coupling (12).

2. according to the described asphalt mixture die setting molding experiment instrument of claim 1; It is characterized in that said discharging adjusting mechanism (8) is: be provided with the adjustment leading screw (8-3) that connects with handwheel (8-1), the riser (8-5) that the lower end is provided with and discharging adjustment plate (15) links on the column frame (8-2), the upper end of riser (8-5) is provided with and adjusts the adjustment nut (8-4) that leading screw (8-3) links.

3. according to the described asphalt mixture die setting molding experiment instrument of claim 1; It is characterized in that said bin gate operating mechanism (5) is: the orienting sleeve (5-6) of side axial processing slotted eye is arranged on the agitator tank (4); The tooth bar connecting rod (5-3) that the lower end connects with horizontal lever (5-2) is arranged in the orienting sleeve (5-6); The two ends of horizontal lever (5-2) connect with the upper end of upright lever (5-5); The lower end of upright lever (5-5) is provided with and stirs the bin gate lever (5-4) that bin gate (16) connects, and stirring bin gate (16) materials door-hinge (5-1) connects with agitator tank (4), is arranged on the locating shaft (5-8) of agitator tank (4) and is processed with locating slot; Connect driving gear (5-10) is arranged on the locating shaft (5-8) with bin gate control crank (5-9); Driving gear (5-10) is meshed with follower gear (5-7) on being arranged on agitator tank (4), and follower gear (5-7) is meshed with tooth bar connecting rod (5-3), and the lower end side of bin gate control crank (5-9) is provided with the locating piece with the locating slot overlap joint.

4. according to the described asphalt mixture die setting molding experiment instrument of claim 1; It is characterized in that said clutch coupling (12) is: key axle (12-2) outer end of drawing that is installed in live axle (14) central axial bore of road wheel (13) is provided with clutch handle (12-3); Draw key axle (12-2) be provided with the driven sprocket, road wheel (13) of live axle (14), walking sprocket wheel link chain mechanism (6) movable connects draw key (12-5), draw the compression spring (12-1) that also is provided with and draws key (12-5) to overlap on the key axle (12-2).

5. according to claim 1 or 4 described asphalt mixture die setting molding experiment instruments, it is characterized in that: said live axle (14) is a tubular shaft, in the axial hole of live axle (14), axially is processed with keyway.

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