CN202494629U - Surfacing interlayer adhesion strength tester - Google Patents

Abstract

An instrument for measuring the adhesion force between pavement layers. A supporting column is arranged on the base, and a supporting plate is arranged on the upper end of the supporting column. A lifting mechanism connected with the upper end of the displacement sensor is arranged on the supporting column. The lower end of the displacement sensor is connected to the universal The upper end of the head is connected, the lower end of the universal head is connected with the upper surface of the drawing disc, and the displacement sensor is connected with the computer through the data line. The utility model has the advantages of reasonable design, simple structure, convenient operation, and little damage to the pavement. Choose different test ambient temperatures for indoor tests and on-site testing.

Description

Adhesion tester between pavement layers

technical field

The utility model belongs to the technical field of detection equipment or devices for bonding strength between asphalt pavement structure layers or between bridges and pavement waterproof layers, and in particular relates to detection equipment for measuring bridge surface bonding layers.

Background technique

In recent years, with the extensive use of the bridge deck adhesive layer, the construction technology and quality inspection of the bridge deck adhesive layer have been paid more and more attention. Since the waterproof layer of the bridge deck is a concealed project, it is not easy to repair once a defect occurs. Therefore, it is necessary to monitor the construction quality of the waterproof layer in real time through on-site inspection of the waterproof layer of the bridge deck.

At present, there is no standard test method and procedure for evaluating the pull-out performance of bridge deck bonding layer in my country. The structure of similar foreign instruments is as follows: a metal plate and a cylindrical asphalt test piece are bonded by epoxy resin, and then a controllable and measurable tensile force is applied to the metal plate, and the surface layer columnar test piece is bonded to the waterproof layer and the cement bridge. Facial separation. However, the above-mentioned testing instrument is not a special instrument for waterproof layer testing, so it is bulky, difficult to carry, and cannot change the drawing rate in a wide range, nor can it communicate with the computer and synchronize the collection and processing of test data.

The patent application number is 03218414.X, and the invention name is "Bridge Deck Waterproof Layer Pulling Apparatus". It includes a box body, a worm wheel, and a worm screw connected to the box body through bearings, the screw screw meshes with the worm wheel, and the motor and the worm screw pass through the transmission device. Transmission, the lower end of the screw rod is connected with the sensor in the test system, the upper end of the pull rod is connected with the sensor, and the lower end of the pull rod is connected with the pulling plate. This instrument fills the blank of similar domestic instruments, overcomes the defect that domestic test methods can only be used for indoor tests at that time, and cannot be used for field tests, and also makes up for the shortcomings of similar foreign instruments, but the instrument is complex and can be operated on site Poor sex. The patent application number is 200820122740.2, and the utility model patent named "Road and Bridge Structure Layer Pulling Instrument" is slightly simpler than the above-mentioned "Bridge Deck Waterproof Layer Pulling Instrument" mechanism, but there are still complex structural defects. Realize the monitoring of bridge deck bonding layer and the unification of indoor and outdoor tests.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the shortcomings of the above-mentioned road and bridge structure interlayer puller and bridge deck waterproof layer puller, and provide a simple structure, convenient operation, little damage to the pavement, suitable for indoor test research and On-site tester for the adhesion between pavement layers.

The technical solution adopted to solve the above technical problems is: a support column is provided on the base, a supporting plate is provided on the upper end of the supporting column, a lifting mechanism connected with the upper end of the displacement sensor is provided on the supporting plate, and the lower end of the displacement sensor is connected to the universal The upper end of the head is connected, the lower end of the universal head is connected with the upper surface of the drawing disc, and the displacement sensor is connected with the computer through the data line.

The lifting mechanism of the utility model is a hydraulic jack or a manual jack or an electric jack.

There are at least two support columns 1 of the utility model.

The utility model can simulate different pavement surface treatment conditions, different bonding layers, and pavement structures of different lower pavement layer mixtures. Different test environment temperatures can be selected, and indoor tests and on-site inspections can be carried out. Less destructive.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment, but the utility model is not limited to these embodiments.

Example 1

In Fig. 1, the cohesion tester between pavement layers of the present embodiment consists of a support column 1, a supporting plate 2, a hydraulic jack 3, a displacement sensor 4, a universal head 5, a pulling disc 6, a base 7, and a computer 8 Join composition.

The base 7 of the present embodiment is circular, on the base 7, two support columns 1 are fixedly connected with a threaded fastening connector, and the upper ends of the two support columns 1 are fixedly connected with a supporting plate 2 with a threaded fastening connector. , the supporting plate 2 is fixedly connected with a hydraulic jack 3 with a threaded fastening connector, the oil inlet and oil outlet on the hydraulic jack 3 are connected with the external hydraulic pump through the conduit, and the telescopic rod of the hydraulic jack passes through the supporting plate 2 The through hole at the center is connected with the upper end of the displacement sensor 4 with a threaded fastening connector, the lower end of the displacement sensor 4 is fixedly connected with the upper end of the universal head 5 with a threaded fastening connector, and the lower end of the universal head 5 is fastened with a thread The connecting piece is fixedly connected with the upper surface of the pulling disc 6 . The displacement sensor 4 is used to measure the displacement of the telescopic rod of the hydraulic jack 3. The displacement sensor 4 is connected to the computer 8 through a data line, and the displacement sensor 4 converts the displacement of the telescopic rod of the hydraulic jack 3 into an electrical signal and then converts it into a digital signal. Output to the computer 8, the computer 8 calculates and outputs the calculation results according to the preset program. When carrying out the drawing test of the asphalt mixture in the laboratory, the upper surface of the asphalt mixture test piece and the lower surface of the drawing disc 6 are bonded with epoxy resin, and the hydraulic jack 3 is connected with the hydraulic pump in the laboratory. Then experiment. If on-site sampling is carried out when testing, the upper surface of the asphalt concrete sample that will be taken is bonded with the lower surface of the drawing disc 6 with epoxy glue, and the hydraulic jack 3 is connected with the equipped hydraulic pump for testing.

Example 2

In this embodiment, a manual jack is fixedly connected to the pallet 2 with a threaded fastening piece, and the telescopic rod of the manual jack passes through the through hole at the center of the pallet 2 and is connected to the upper end of the displacement sensor 4 with a threaded fastening piece. , the lower end of the displacement sensor 4 is fixedly connected with the upper end of the universal head 5 with a threaded fastening connector, and the lower end of the universal head 5 is fixedly connected with the upper surface of the drawing disc 6 with a threaded fastening connector. Other parts are identical with embodiment 1 with the coupling relationship of parts.

Example 3

In this embodiment, an electric jack is fixedly connected to the pallet 2 with a threaded fastening connector, and the telescopic rod of the electric jack passes through the through hole at the center of the pallet 2 and is connected to the upper end of the displacement sensor 4 with a threaded fastening connector. , the lower end of the displacement sensor 4 is fixedly connected with the upper end of the universal head 5 with a threaded fastening connector, and the lower end of the universal head 5 is fixedly connected with the upper surface of the drawing disc 6 with a threaded fastening connector. Other parts are identical with embodiment 1 with the coupling relationship of parts.

Example 4

In the above embodiments 1 to 3, the base 7 is fixedly connected with four support columns 1 with threaded fastening connectors, and the upper ends of the four support columns 1 are fixedly connected with supporting plates 2 with threaded fastening connectors. The lifting mechanism provided on the board 2 is the same as that of the corresponding embodiment. Other parts are identical with embodiment 1 with the coupling relationship of parts.

Claims (3)

1. a cohesion tester between paving layers, is characterized in that: support column (1) is provided on base (7), the upper end of support column (1) is provided with supporting plate (2), supporting plate ( 2) An elevating mechanism connected with the upper end of the displacement sensor (4) is arranged on the top, the lower end of the displacement sensor (4) is connected with the upper end of the universal head (5), and the lower end of the universal head (5) is connected with the drawing disc (6) The upper surface is connected, and the displacement sensor (4) is connected with the computer (8) through the data line. 2. The cohesion tester between pavement layers according to claim 1, characterized in that: the lifting mechanism is a hydraulic jack (3) or a manual jack or an electric jack. 3. The interlayer cohesion tester according to claim 1, characterized in that there are at least two support columns (1).

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