CN216900044U - Concrete wear resistance testing device - Google Patents

Concrete wear resistance testing device Download PDF

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Publication number
CN216900044U
CN216900044U CN202123168270.8U CN202123168270U CN216900044U CN 216900044 U CN216900044 U CN 216900044U CN 202123168270 U CN202123168270 U CN 202123168270U CN 216900044 U CN216900044 U CN 216900044U
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China
Prior art keywords
rotating rod
concrete
dwang
ball bearing
test piece
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CN202123168270.8U
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Chinese (zh)
Inventor
边晓亚
任成强
陈旭勇
徐雄
程书凯
吴巧云
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Wuhan Institute of Technology
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Wuhan Institute of Technology
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Abstract

The utility model belongs to the technical field of concrete performance testing devices, and particularly relates to a concrete wear resistance testing device. This concrete wear-resisting testing arrangement includes: a horizontally disposed rubber belt driven by a motor; the rotating rod is horizontally arranged above the conveying belt and is perpendicular to the conveying direction of the conveying belt, and a cylindrical test piece penetrates through the middle of the rotating rod and is fixedly connected with the rotating rod; and the fixed setting is in the support column at dwang both ends, each the upper end of support column can be dismantled and be connected with first ball bearing, first ball bearing with the dwang rotates to be connected. The utility model can simulate the friction condition of the vehicle to the ground through the rotational friction between the rubber conveyor belt and the test piece.

Description

Concrete wear resistance testing device
Technical Field
The utility model belongs to the technical field of concrete performance testing devices, and particularly relates to a concrete wear resistance testing device.
Background
The wear resistance is an important assessment index of a concrete pavement, and influences the service life of the concrete pavement, wherein two important aspects are that vehicles and people act on the pavement periodically to bear different types of acting force, the concrete pavement is seriously worn, and the pavement is fragile and damaged under long-term action. And secondly, the texture depth of the surface of the road surface is reduced, the friction coefficient is reduced, and the phenomena that the vehicle slips, the braking distance is increased and the like threaten the driving safety are easily generated. The existing concrete wear resistance test method is that a concrete test block rotates for 500 times in a los Angeles mill-resistant machine and performs rotary friction with a steel ball, and under the actual condition, the abrasion of the concrete pavement is mainly generated by relative static friction force between tires and pedestrians advancing and the pavement when a vehicle starts and brakes.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a concrete wear resistance testing device. For the defects of the existing laboratory simulation, the utility model can be more approximate to the actual working conditions of the friction between the running vehicles and the pedestrians and the concrete.
The technical scheme provided by the utility model is as follows:
a concrete wear test apparatus comprising:
a horizontally disposed rubber belt driven by a motor;
the rotating rod is horizontally arranged above the conveying belt and is perpendicular to the conveying direction of the conveying belt, and a cylindrical test piece penetrates through the middle of the rotating rod and is fixedly connected with the rotating rod;
and the fixed setting is in the support column at dwang both ends, each the upper end of support column can be dismantled and be connected with first ball bearing, first ball bearing with the dwang rotates to be connected.
In the above technical scheme:
the surface layer of the conveying belt is hot-rolled on the conveying frame by adopting tire rubber with the thickness of 5 mm;
the motor is driven by three-phase electricity;
the load is replaced by a weight;
the cylindrical concrete test piece can be made of 42.5R cement, and the geometric dimension of the concrete test piece can be phi 100mm multiplied by 250mm which is embedded with the rotating rod. And the rotating rod is pre-embedded in the center of the circular surface of the test piece.
The periphery of the cylindrical concrete test piece is blocked by the fence, so that fine particles are prevented from flying out in the high-friction process.
Based on above-mentioned technical scheme, the rotational friction between accessible rubber conveyer belt and the test piece simulates the vehicle and rubs the condition to the ground.
Furthermore, the motor can also be provided with a controller, and the rubber conveyor belt and the cylindrical concrete test block are subjected to periodic acceleration or deceleration and mutual friction through the motor controller to generate quality loss, so that the friction condition of the vehicle to the ground can be better simulated.
Furthermore, the end parts of the two ends of the rotating rod are respectively connected with a disc-shaped handle head in a rotating mode through a second ball shaft.
Based on above-mentioned technical scheme, can avoid or reduce the rotation of dwang rotation in-process head.
Further, the both ends of dwang are provided with a third ball axle respectively, the inner circle of third ball axle with dwang fixed connection, the outer lane fixedly connected with lifting rope of third ball axle, the fixed hanging flower basket that is provided with of lower extreme of lifting rope, the load weight has been placed in the hanging flower basket.
Based on above-mentioned technical scheme, can adjust the crimping condition between test piece and the rubber conveyer belt as required.
Furthermore, the upper end of each support column is provided with a plug connector, the outer ring of each first ball bearing is fixedly connected with a plug sleeve matched with the plug connector, and the inner ring of each first ball bearing is fixedly connected with the rotating rod.
Based on above-mentioned technical scheme, make things convenient for getting, putting of dwang and test piece.
Specifically, the width of the rubber conveyor belt is larger than the width of the test piece.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model can effectively and truly simulate the friction condition between the automobile tire and the concrete pavement under the actual condition, conforms to the friction condition between the concrete pavement and the rubber tire, and improves the accuracy of the test result of the cement concrete wear resistance test.
Drawings
Fig. 1 is a schematic overall structure diagram of a concrete wear resistance testing device provided by the utility model.
In fig. 1, the structure represented by each reference numeral is listed as follows:
1. a rubber conveyor belt; 2. rotating the rod; 3. a test piece; 4. a support pillar; 5. a handle head; 6. a lifting rope; 7. a hanging basket.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the utility model.
It will be understood that when an element or component is referred to as being "connected," "positioned" or "coupled" to another element or component, it can be directly on the other element or component or intervening elements or components may also be present. The terms "left", "right", "upper", "lower" and the like as used herein are for illustrative purposes only.
In one embodiment, as shown in fig. 1, the concrete wear resistance test apparatus includes: a horizontally arranged rubber belt conveyor 1 driven by a motor; the rotating rod 2 is horizontally arranged above the conveying belt and is vertical to the conveying direction of the conveying belt, and a cylindrical test piece 3 penetrates through the middle of the rotating rod and is fixedly connected with the rotating rod; and the fixed support columns 4 that set up at dwang 2 both ends, the upper end of each support column 4 can be dismantled and be connected with first ball bearing, and first ball bearing rotates with dwang 2 to be connected. The width of the rubber conveyor belt 1 is larger than the width of the test piece 3. Based on this technical scheme, the rotational friction between accessible rubber-tyred belt and the test piece, the simulation vehicle is to the ground friction condition.
In one embodiment, the motor can be further provided with a controller, and the rubber conveyor belt and the cylindrical concrete test block rub against each other periodically in an accelerating or decelerating mode through the motor controller to generate quality loss, so that the friction condition of a vehicle to the ground can be better simulated.
In one embodiment, as shown in fig. 1, the end portions of both ends of the rotating rod 2 are rotatably connected to a disc-shaped grip 5 through a second ball shaft, respectively. Based on this technical scheme, can avoid or reduce the rotation of dwang rotation in-process head.
In one embodiment, as shown in fig. 1, a third ball shaft is respectively disposed at two ends of the rotating rod 2, an inner ring of the third ball shaft is fixedly connected with the rotating rod 2, a lifting rope 6 is fixedly connected to an outer ring of the third ball shaft, a hanging basket 7 is fixedly disposed at a lower end of the lifting rope 6, and a load weight is placed in the hanging basket 7. Based on this technical scheme, can adjust the crimping condition between test piece and the rubber conveyer belt as required.
In one embodiment, a plug is arranged at the upper end of each supporting column 4, a plug sleeve matched with the plug is fixedly connected to the outer ring of each first ball bearing, and a rotating rod 2 is fixedly connected to the inner ring of each first ball bearing. Based on this technical scheme, make things convenient for getting, putting of dwang and test piece.
According to the utility model, the concrete test piece to be tested is pressed on the rubber conveyor belt, the weight is placed on the hanging basket to serve as a vehicle load, the rubber conveyor belt provides horizontal friction force for the cylindrical concrete test piece, and the rubber conveyor belt realizes cyclic movement repeatedly under the action of the motor in the test process, so that the abrasion test of the concrete test piece under the action of the rubber unit body is realized.
The foregoing is merely a preferred embodiment of this invention and is not intended to limit the utility model in any manner; those skilled in the art can readily practice the utility model as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (5)

1. The utility model provides a concrete wear-resisting testing arrangement which characterized in that includes:
a horizontally arranged rubber conveyor belt (1) driven by a motor;
the rotating rod (2) is horizontally arranged above the conveying belt and is perpendicular to the conveying direction of the conveying belt, and a cylindrical test piece (3) penetrates through the middle of the rotating rod and is fixedly connected with the rotating rod;
and the fixed setting is in support column (4) at dwang (2) both ends, each the upper end of support column (4) can be dismantled and be connected with first ball bearing, first ball bearing with dwang (2) are rotated and are connected.
2. The concrete wear testing device of claim 1, wherein: the end parts of the two ends of the rotating rod (2) are respectively connected with a disc-shaped handle head (5) through a second ball shaft in a rotating mode.
3. The concrete wear testing device of claim 1, wherein: the both ends of dwang (2) are provided with a third ball axle respectively, the inner circle of third ball axle with dwang (2) fixed connection, the outer lane fixedly connected with lifting rope (6) of third ball axle, the fixed hanging flower basket (7) that is provided with of lower extreme of lifting rope (6), the load weight has been placed in hanging flower basket (7).
4. The concrete abrasion resistance testing device according to any one of claims 1 to 3, wherein: the upper end of each support column (4) is provided with a plug connector, the outer ring of each first ball bearing is fixedly connected with a plug sleeve matched with the plug connector, and the inner ring of each first ball bearing is fixedly connected with the rotating rod (2).
5. The concrete wear testing apparatus of any one of claims 1 to 3, wherein: the width of the rubber conveyor belt (1) is larger than that of the test piece (3).
CN202123168270.8U 2021-12-16 2021-12-16 Concrete wear resistance testing device Active CN216900044U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123168270.8U CN216900044U (en) 2021-12-16 2021-12-16 Concrete wear resistance testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123168270.8U CN216900044U (en) 2021-12-16 2021-12-16 Concrete wear resistance testing device

Publications (1)

Publication Number Publication Date
CN216900044U true CN216900044U (en) 2022-07-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202123168270.8U Active CN216900044U (en) 2021-12-16 2021-12-16 Concrete wear resistance testing device

Country Status (1)

Country Link
CN (1) CN216900044U (en)

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