CN217901322U - Multi-working-condition road roller compacted concrete bending-resistant tensile test piece forming machine - Google Patents

Abstract

The utility model discloses a road roller compacted concrete bending-tension-resistant test piece forming machine for multiple working conditions, which comprises a supporting platform, a movable bearing plate, a vibration pressurizing device, a plane forming mechanism and a fan-shaped wheel rolling mechanism, wherein the supporting platform is provided with a first station and a second station; the bearing plate is used for placing a concrete test piece mold, is arranged at the upper part of the supporting platform and can move between a first station and a second station of the supporting platform; the vibration pressurizing device is fixed on the rack, the driving end of the vibration pressurizing device is respectively connected with the plane forming mechanism and the fan-shaped wheel grinding mechanism, the plane forming mechanism is positioned right above the first station, and the fan-shaped wheel grinding mechanism is positioned right above the second station. The utility model has the advantages that: the utility model discloses grind dull and stereotyped loading system and fan-shaped rubber tyer and combine, can realize dull and stereotyped static pressure, dull and stereotyped vibration pressurization and the simulation of different operating modes such as rubber tyer static pressure, with the general adoption of roller compacted concrete just press, repressing, shaping, press four processes unanimously, can simulate the field engineering reality more scientifically.

Description

Multi-working-condition road roller compacted concrete bending-resistant tensile test piece forming machine

Technical Field

The utility model relates to a former, concretely relates to multiplex condition is with highway roller compacted concrete bending resistance draws test piece make-up machine.

Background

Roller compacted concrete is a material with properties between those of cement concrete and cement stabilized macadam. From the aspect of mechanical properties, the roller compacted concrete has the performance characteristics of cement concrete after hardening, but has the advantages of less cement consumption, high mixing forming efficiency, high construction speed, short curing period and the like compared with the cement concrete. From the working performance, the roller compacted concrete is similar to cement stabilized macadam, the mixture does not have any fluidity, and the roller compacted concrete needs to be vibrated, rolled and compacted to form, but has more advantages in the aspects of bearing capacity, fatigue resistance, scouring resistance and the like. By means of the unique technical performance and economic benefit advantages, the application of the roller compacted concrete to the road surface is more and more extensive.

The method for forming the bending-resistant tensile test piece of the road pavement generally takes 28d bending-resistant tensile strength as a design index, and the current method for forming the bending-resistant tensile test piece of the roller compacted concrete mainly refers to the road engineering cement and cement concrete test regulations (JTG E30). However, in practice, the modified flat-plate vibration device described in the specification has the following problems: (1) The flat vibration forming mode adopted by the regulations is greatly different from the wheel rolling (steel wheel road roller and tire road roller) vibration forming mode adopted by field construction; (2) The reformed flat plate vibration device has low automation degree, needs manual external force to extrude the ultra-dry hard concrete, and has high working strength and large artificial interference. Therefore, there is a need for improvements in the prior art.

Disclosure of Invention

An object of the utility model is to prior art not enough, provide a can realize dull and stereotyped static pressure, dull and stereotyped vibration pressurization and rubber tyer static pressure multiplex condition with highway roller compacted concrete bending resistance draw test piece make-up machine.

The utility model discloses a technical scheme do: a road roller compacted concrete bending-resistant tensile test piece forming machine for multiple working conditions comprises a supporting platform, a movable bearing plate, a vibration pressurizing device, a plane forming mechanism and a fan-shaped wheel rolling mechanism, wherein the supporting platform is provided with a first station and a second station; the bearing plate is arranged on the upper part of the supporting platform and can move between a first station and a second station of the supporting platform; the wheel grinding table is fixed on the bearing plate; the vibration pressurizing device is fixed on the rack, the driving end of the vibration pressurizing device is respectively connected with the plane forming mechanism and the fan-shaped wheel grinding mechanism, the plane forming mechanism is positioned right above the first station, and the fan-shaped wheel grinding mechanism is positioned right above the second station.

According to the scheme, the supporting platform comprises a bedplate at the upper part and supporting legs arranged at four corners of the bedplate, and a storage rack is additionally arranged below the bedplate; the table plate is provided with a guide rail connected with the first station and the second station, the bearing plate is slidably mounted on the guide rail, four corners of the bottom of the bearing plate are respectively provided with a pulley matched with the guide rail, and the pulleys drive the bearing plate to slide between the first station and the second station along the guide rail.

According to the scheme, template clamps with adjustable lengths are arranged at four corners of the bearing plate.

According to the scheme, the forming machine further comprises a traction device, the traction device is arranged on a storage rack of the supporting platform, and a driving end of the traction device is connected with the bearing plate and can drive the bearing plate to move between a first station and a second station of the supporting platform; the traction device comprises a driving motor, a belt, a gear, a guide rod and the like, wherein the guide rod is bolted with the rail wheel rolling bearing plate.

According to the scheme, the driving end of the vibration pressurizing device is fixedly provided with the stress beam, the lower end of the stress beam is respectively connected with the first transmission rod and the second transmission rod which are vertically arranged, the lower end of the first transmission rod is connected with the plane forming mechanism, and the lower end of the second transmission rod is connected with the fan-shaped wheel grinding mechanism.

According to the scheme, the first transmission rod is provided with the first guide support, the second transmission rod is provided with the second guide support, and the lower ends of the first guide support and the second guide support are both arranged on the bedplate.

According to the scheme, the plane forming mechanism comprises a first stress plate, a second stress plate, a spring forming plate and a plane forming pressing plate which are arranged in parallel, the first stress plate is connected with the lower end of a first stress rod, and a plurality of springs are uniformly distributed between the first stress plate and the second stress plate; and a plurality of screw rods are uniformly distributed between the second stress plate and the spring forming plate, and the bottom of the spring forming plate is fixed by the plane forming pressing plate.

According to the scheme, the fan-shaped wheel milling mechanism is a fan-shaped wheel milling device which is of an arc-shaped structure, the upper corner end of the fan-shaped wheel milling device is hinged with the lower end of the second transmission rod, and the arc milling surface on the lower portion of the fan-shaped wheel milling device can be in contact with and mill the concrete test mould positioned on the second station.

According to the scheme, the forming machine is also provided with a controller, and the controller is respectively connected with the traction device and the vibration pressurizing device and controls the corresponding devices to act.

The utility model has the advantages that:

1. the utility model discloses grind dull and stereotyped loading system and fan-shaped rubber tyer and combine, can realize dull and stereotyped static pressure, dull and stereotyped vibration pressurization and the simulation of different operating modes such as rubber tyer static pressure, unanimous with four processes of initial pressure, repressing, shaping, final pressure that the roller compacted concrete generally adopted, can simulate the field engineering reality more scientifically.

2. The utility model discloses a hydraulic pressure vibration pressure device replaces traditional hand formula pressurization, the artifical working strength and the jamming that significantly reduce.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the flat surface forming mechanism in this embodiment.

Wherein: 1. a traction device; 2. a carrier plate; 3. a wheel milling table; 4. a screw; 5. a spring; 6. a spring forming plate; 7. a plane molding pressing plate; 8. a sector wheel mill; 9. a vibratory pressurizing device; 10. a support platform; 11. a stressed beam; 12. a second transmission rod; 13. a second guide bracket; 14. a first drive lever; 15. a first guide bracket; 16. a first force-bearing plate; 17. a second force-bearing plate.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

The road roller compacted concrete bending-resistant tensile test piece forming machine for multiple working conditions as shown in fig. 1 comprises a supporting platform 10, a movable bearing plate 2, a wheel rolling platform 3, a vibration pressurizing device 9, a plane forming mechanism and a fan-shaped wheel rolling mechanism, wherein the supporting platform 10 is provided with a first station and a second station; the bearing plate 2 is arranged on the upper part of the supporting platform 10 and can move between a first station and a second station of the supporting platform 10; the wheel grinding table 3 is fixed on the bearing plate 2; the vibration pressurizing device 9 is fixed on the frame; the driving end of the vibration pressurizing device 9 is respectively connected with the plane forming mechanism and the fan-shaped wheel grinding mechanism, the plane forming mechanism is positioned right above the first station, and the fan-shaped wheel grinding mechanism is positioned right above the second station.

In this embodiment, the wheel milling table 3 is fixed on the bearing plate 2 through the template fixture on the bearing plate 2 as a concrete sample mold to be milled, and is used for placing and fixing raw materials.

In the utility model, the supporting platform 10 comprises a bedplate at the upper part and supporting legs arranged at four corners of the bedplate, and a storage rack is additionally arranged below the bedplate; the bedplate is provided with a guide rail connected with a first station and a second station, the bearing plate 2 is slidably mounted on the guide rail, four corners of the bottom of the bearing plate 2 are respectively provided with pulleys matched with the guide rail, and the pulleys drive the bearing plate 2 to slide between the first station and the second station along the guide rail; the four corners of the bearing plate 2 are provided with length-adjustable template clamps for fixing the wheel grinding tables 3 with different sizes. In this embodiment, the supporting board 2 has a rectangular structure, a length of 650mm and a width of 180mm.

Preferably, the molding machine further comprises a traction device 1, the traction device 1 is installed on a storage rack of the supporting platform 10, and a driving end of the traction device 1 is connected with the bearing plate 2, so that the bearing plate 2 can be driven to move between the first station and the second station of the supporting platform 10.

In the present embodiment, the traction device 1 is of a conventional structure, which is not shown in the drawings; the traction device 1 comprises a driving motor, a lead screw and a moving block provided with a threaded hole, a motor shaft of the driving motor is connected with one end of the lead screw, the lead screw is matched with the moving block, and the upper part of the moving block is connected with the bearing plate 2; when the driving motor drives the lead screw to rotate, the moving block moves along the axial direction of the lead screw, and the bearing plate 2 connected with the moving block moves between the first station and the second station.

The utility model discloses in, vibration pressure device 9 is hydraulic pressure loading system, and the frame is common hydraulic press steelframe bearing structure, not shown in the drawing, and this is prior art, and here is no longer repeated. Preferably, a stressed beam 11 is fixed at the driving end of the vibration pressurizing device 9, the lower end of the stressed beam 11 is respectively connected with a first transmission rod 14 and a second transmission rod 12 which are vertically arranged, the lower end of the first transmission rod 14 is connected with the plane forming mechanism, and the lower end of the second transmission rod 12 is connected with the sector wheel grinding mechanism; the first transmission rod 14 is provided with a first guide support 15, the second transmission rod 12 is provided with a second guide support 13, and the lower ends of the first guide support 15 and the second guide support 13 are both arranged on the bedplate.

Preferably, as shown in fig. 2, the plane forming mechanism comprises a first stress plate 16, a second stress plate 17, a spring forming plate 6 and a plane forming press plate 7 which are arranged in parallel, the first stress plate 16 is connected with the lower end of a first stress rod, and a plurality of springs 5 are uniformly distributed between the first stress plate 16 and the second stress plate 17 and can be used for simulating a flat plate vibration rolling process; a plurality of screw rods 4 are evenly distributed between the second stress plate 17 and the spring forming plate 6, the plane forming pressing plate 7 is provided with bolts, and the bolt holes are reserved in the spring forming plate 6 to be fixed to the bottom of the spring forming plate. For dull and stereotyped static pressure of more true simulation test piece, dull and stereotyped vibration pressurization process to make things convenient for the change after each part damages, the utility model discloses a plurality of clamp plates and bolt have been set up.

In the embodiment, the plane forming mechanism is of a symmetrical design structure, so that the concrete test mold can be stressed uniformly; the flat forming press plate 7 can be replaced, and is generally smaller than the inner wall size of the test mould by about 5mm, and the thickness is not smaller than 15mm. The vibration pressurizing device 9 sequentially passes through the stress beam 11, the first transmission rod 14, the first stress plate 16, the spring 5, the second stress plate 17, the bolt, the spring forming plate 6 and the plane forming pressing plate 7, and transmits acting force to the concrete test piece mold on the bearing plate 2.

Preferably, the sector wheel milling mechanism is a sector wheel mill 8, the sector wheel mill 8 is of an arc-shaped structure, the upper corner end of the sector wheel mill is hinged to the lower end of the second transmission rod 12, and the arc-shaped milling surface on the lower portion of the sector wheel mill 8 can be in contact with and mill a concrete test mold on the second station. In this embodiment, the sector wheel mill 8 has an arc structure, and has a diameter of 700mm and a width of 180mm. The vibration pressurizing device 9 sequentially passes through the stress beam 11, the second transmission rod 12 and the fan-shaped wheel mill 8, and transmits acting force to the concrete sample mold on the bearing plate 2.

Preferably, the forming machine is also provided with a controller, and the controller is respectively connected with the traction device 1 and the vibration pressurizing device 9 and controls the corresponding devices to act; the controller is additionally provided with a frequency modulation control button, a switch control button, a rolling frequency control button and the like, and the pressurization time, the pressurization pressure, the vibration frequency, the rolling frequency and the like are automatically controlled by the controller, which is the prior art and is not repeated herein.

The utility model discloses a theory of operation does: firstly, fixing a concrete sample mold to be rolled (namely a wheel rolling platform 3) on a bearing plate 2, starting a traction device 1, moving the concrete sample mold to a first station along a guide rail through the bearing plate 2, centering below a plane forming mechanism, and then sequentially carrying out the procedures of static pressure of a first stress plate 16 and vibration and pressurization of a flat plate; the traction device 1 is started again, the concrete sample mold is drawn to the second station, and after the concrete sample mold is centered below the fan-shaped wheel mill 8, a second wheel milling and rolling process is carried out; and finally, the traction device 1 drives the concrete test piece mold to retreat to the lower part of the plane forming pressure plate 7 for centering again, and the final pressing process of the flat plate static pressure is completed.

Finally, it should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or part of the technical features can be replaced equally, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A road roller compacted concrete bending-resistant tensile test piece forming machine for multiple working conditions is characterized by comprising a supporting platform, a movable bearing plate, a wheel grinding table, a vibration pressurizing device, a plane forming mechanism and a fan-shaped wheel grinding mechanism, wherein the supporting platform is provided with a first station and a second station; the bearing plate is arranged at the upper part of the supporting platform and can move between a first station and a second station of the supporting platform, and the wheel grinding table is fixed on the bearing plate; the vibration pressurizing device is fixed on the rack, the driving end of the vibration pressurizing device is respectively connected with the plane forming mechanism and the fan-shaped wheel grinding mechanism, the plane forming mechanism is positioned over the first station, and the fan-shaped wheel grinding mechanism is positioned over the second station.

2. The molding machine according to claim 1, wherein the support platform comprises a top platen and supporting legs arranged at four corners of the platen, and a shelf is additionally arranged below the platen; the table plate is provided with a guide rail for connecting the first station and the second station, the bearing plate is slidably mounted on the guide rail, four corners of the bottom of the bearing plate are respectively provided with a pulley matched with the guide rail, and the pulleys drive the bearing plate to slide between the first station and the second station along the guide rail.

3. The molding machine of claim 2, wherein the support plates are provided with length adjustable template holders at four corners.

4. The molding machine of claim 2, further comprising a traction device mounted on the carrier of the support platform, wherein a drive end of the traction device is coupled to the carrier plate for moving the carrier plate between the first station and the second station of the support platform; the traction device comprises a driving motor, a belt, a gear and a guide rod, and the guide rod is bolted with the rail wheel rolling bearing plate.

5. The molding machine according to claim 1, wherein a force-receiving beam is fixed to a driving end of the vibration pressing device, a first driving rod and a second driving rod which are vertically arranged are connected to a lower end of the force-receiving beam, respectively, a lower end of the first driving rod is connected to the flat surface molding mechanism, and a lower end of the second driving rod is connected to the sector wheel grinding mechanism.

6. A machine according to claim 5, wherein said first transfer bar is provided with a first guide bracket and said second transfer bar is provided with a second guide bracket, the lower ends of both said first and second guide brackets being mounted on the platen.

7. The molding machine according to claim 6, wherein the planar molding mechanism comprises a first stress plate, a second stress plate, a spring molding plate and a planar molding press plate which are arranged in parallel, the first stress plate is connected with the lower end of the first stress rod, and a plurality of springs are uniformly distributed between the first stress plate and the second stress plate; and a plurality of screw rods are uniformly distributed between the second stress plate and the spring forming plate, and the bottom of the second spring forming plate is fixed by the plane forming pressing plate.

8. The molding machine of claim 6 wherein said sector wheel mill mechanism is a sector wheel mill having an arcuate configuration with its upper corner end hinged to the lower end of the second drive link and its lower arcuate milling surface engageable with and rollable against a concrete test mold located at the second station.

9. The molding machine of claim 1, further comprising a controller, wherein the controller is connected to the drawing device and the vibrating and pressing device, respectively, to control the operation of the corresponding devices.

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