Ballast bed resistance testing device

Abstract

The utility model relates to a ballast bed resistance testing device which comprises a ballast bed transverse resistance testing device and a ballast bed longitudinal resistance testing device, the ballast bed transverse resistance testing device comprises a connecting base, a transverse cushion block, an oil cylinder and a pressure gauge, the connecting base is connected with the transverse cushion block through the oil cylinder, and the transverse cushion block is connected with the pressure gauge. The pressure gauge is arranged between the transverse cushion block and the oil cylinder; the ballast bed longitudinal resistance testing device comprises a connecting base, a longitudinal cushion block, an oil cylinder, nylon blocks and a pressure gauge, the connecting base is connected with the longitudinal cushion block through the oil cylinder, and the nylon blocks are arranged on the outer side of the connecting base and the outer side of the longitudinal cushion block respectively; and the displacement meter comprises a dial gauge and a matched magnetic universal connection gauge stand. The device has the advantages that the device is good in economical efficiency, safe, stable, easy and convenient to operate and light in tool weight; assembly parts required for testing are reduced, and only corresponding accessories need to be connected without replacing the whole set of equipment during transverse and longitudinal testing; all parts are reliably connected, and the test operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of ballasted line maintenance, in particular to a roadbed resistance testing device. Background Art

[0002] The "High-speed Railway Ballasted Track Line Maintenance Rules (Trial)" clearly stipulates the lateral resistance and longitudinal resistance of the track bed. The track bed resistance should meet the parameter requirements in the revision rules. The track bed resistance is the main parameter for judging the status of the ballasted track bed. At present, with the extension of the service life of high-speed rail ballasted lines, some lines have problems such as compaction and ballast shortage, and operations such as screening, tamping, and ballast replenishment are required. The track bed resistance test of some lines that have carried out screening, tamping, and ballast replenishment shows that the track bed resistance is affected by factors such as the track bed cross-sectional size, track bed density, and total weight. Therefore, during the operation and maintenance of ballasted tracks, it is necessary to pay attention to the detection and maintenance of track bed resistance to ensure operation and maintenance safety.

[0003] The existing ballast bed resistance testing devices have shortcomings such as many components, complicated operation procedures, and time-consuming testing. In order to further meet the on-site operation and maintenance needs and timely and accurately grasp the ballasted track ballast bed resistance, it is urgent to develop a simple and easy-to-operate ballast bed resistance testing device to meet the on-site requirements for detailed test data and short test time. Summary of the invention

[0004] The purpose of the utility model is to provide a ballast bed resistance testing device based on the above-mentioned deficiencies of the prior art, which can quickly and conveniently test the lateral resistance and longitudinal resistance of the ballast bed for ballasted lines equipped with a Pandro fastener system and a V-type fastener system.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A roadbed resistance testing device, characterized in that it comprises a roadbed lateral resistance testing device and a roadbed longitudinal resistance testing device, wherein:

[0007] The ballast bed lateral resistance testing device comprises a connecting base, a lateral pad, an oil cylinder and a pressure gauge, wherein the connecting base is connected to the lateral pad via the oil cylinder, and the pressure gauge is arranged between the lateral pad and the oil cylinder;

[0008] The roadbed longitudinal resistance testing device comprises a connecting base, a longitudinal pad, an oil cylinder, a nylon block and a pressure gauge, wherein the connecting base is connected to the longitudinal pad through the oil cylinder, and the nylon block is respectively arranged on the outer side of the connecting base and the outer side of the longitudinal pad;

[0009] It also includes a displacement meter, which includes a micrometer and a matching magnetic universal connection meter seat.

[0010] The connecting base is provided with a threaded hole, through which the connecting base is connected to one end of the oil cylinder, and the other end of the oil cylinder is connected to the transverse pad or the longitudinal pad; the connecting base is provided with a stepped hole, through which the connecting base is connected to the clamping tooling.

[0011] The connecting base matches the structure of the Pandro clamping tool or the structure of the V-shaped clamping tool.

[0012] When the connecting base is matched with the V-shaped clamping fixture, a connecting seat is arranged between the oil cylinder and the pressure gauge.

[0013] The advantages of the utility model are: the device is economical, safe and stable, easy to operate, lightweight, and complies with the railway industry standard TB / T 3448-2016 Railway Gravel Roadbed State Parameter Test Method. Fewer assembly parts are required for testing, and the horizontal and vertical tests do not require the replacement of the entire set of equipment, only the corresponding accessories need to be connected; the connection between the various components is reliable, the test operation is convenient, and it is easy to popularize the operation, which can meet the needs of quickly, stably and accurately completing the roadbed resistance test in the cleaning and tamping operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the lateral resistance test device of the track bed of the utility model (Pandero fastener system);

[0015] Figure 2 It is a structural schematic diagram of the lateral resistance test device of the track bed of the utility model (V-type fastener system);

[0016] Figure 3 This is a schematic diagram of the lateral resistance displacement test of the utility model;

[0017] Figure 4 This is a structural schematic diagram of a longitudinal resistance testing device of the utility model;

[0018] Figure 5 This is a schematic diagram of the longitudinal resistance displacement test of the utility model. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0020] like Figure 1-5 As shown, the marks 1-11 in the figure respectively represent: connecting base 1, cylinder 2, transverse pad 3, pressure gauge 4, Pandro clamping fixture 5, connecting seat 6, V-type clamping fixture 7, magnetic universal connecting table seat 8, micrometer 9, nylon block 10, longitudinal pad 11.

[0021] Embodiment: The ballast resistance testing device in this embodiment is based on the railway industry standard TB / T 3448-2016 Railway Gravel Ballast State Parameter Testing Method, and can quickly and conveniently test the ballast lateral resistance and ballast longitudinal resistance of ballasted lines equipped with Pandro fastener system and V-type fastener system.

[0022] like Figure 1 As shown, the roadbed resistance testing device includes a roadbed lateral resistance testing device, which is aimed at the Pandro clamping tool 5, which includes a connecting base 1, a cylinder 2, a lateral pad 3 and a pressure gauge 4, wherein the connecting base 1 is provided with a threaded hole, which is connected to the cylinder end of the cylinder 2 through a bolt, the push end of the cylinder 2 is connected to the lateral pad 3, and the pressure gauge 4 is arranged between the lateral pad 3 and the cylinder 2.

[0023] In this embodiment, the oil cylinder 2 and the connection base 1, the pressure gauge 4 and the oil cylinder 2, and the Pandro clamping tool 5 and the connection base 1 are all connected by bolts. After the fasteners and rubber pads are disassembled, the transverse pads 3 are placed to make the rails evenly stressed, and then the Pandro clamping tool 5 is used to clamp the fasteners to ensure balance and stability when pressure is applied. Then, the oil cylinder 2 is used to apply pressure to test the lateral resistance of the ballast bed.

[0024] like Figure 2 As shown, at this time, the lateral resistance test device of the track bed is aimed at the V-type clamping fixture 7, compared with Figure 1 As for the Pandro clamping fixture 5 shown, a connecting seat 6 is additionally provided between the oil cylinder 2 and the pressure gauge 4 to adapt to the V-type clamping fixture 7. The V-type clamping fixture 7 is put into the fastener bolt, and the bolt is pre-tightened downward before testing.

[0025] like Figure 3 As shown, according to the railway industry standard TB / T 3448-2016 Railway Gravel Roadbed State Parameter Test Method, the roadbed lateral resistance displacement test needs to be carried out near the outside of the other end of the tested sleeper, and the pressure required for the sleeper to displace 2mm is the roadbed lateral resistance test result. This example uses a micrometer 9 in conjunction with a magnetic universal connection base 8 to perform a displacement test. First, the magnetic head of the magnetic universal connection base 8 is installed on the rail, and then the micrometer 9 is installed horizontally at the reserved position of the sleeper fastener (the V-type fastener is installed at the fastener bolt). Ensure that the micrometer 9 is reset before loading, and stop loading when the displacement reaches 2mm after loading.

[0026] like Figure 4As shown, the ballast resistance test device includes a ballast longitudinal resistance test device. Compared with the ballast transverse resistance device, the ballast longitudinal resistance test device needs to use additional bolts to connect the nylon block 10, and replace the transverse pad 3 with the longitudinal pad 11, and connect the nylon block 10 with the longitudinal pad 11, and connect the nylon block 10 with the connecting base 1. According to the railway gravel ballast state parameter test method, the two tested sleepers first need to remove the fasteners and extract the rubber pads, and then install two loading devices at a distance of 1 / 2-2 / 3 from the top surface of the sleeper and equidistant from the longitudinal center line of the sleeper.

[0027] like Figure 5 As shown, in this embodiment, when testing the longitudinal resistance displacement of the track bed, it is necessary to simultaneously measure the displacement of two sleepers to be tested, install the magnetic universal connection meter seat 8 on the rail, and then install the micrometer 9 on the sleeper. Ensure that the micrometer 9 is reset before loading, and stop loading when the displacement reaches 2mm after loading.

[0028] In the specific implementation of this embodiment: the connection base 1 and the connection base 6 are made of high-strength aluminum alloy, and the connection base 6 and the clamping tool can be selected according to different fastener systems. The connection base 1 can be further connected to the clamping tool through a stepped hole.

[0029] The stroke of the oil cylinder is 50mm, and the pressure range is 40-50KN / piece. The pressure gauge range is 0-5000KG, the displacement test accuracy is ≤0.1mm, and the pressure test accuracy is ≤1KN.

[0030] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A roadbed resistance testing device, characterized in that: It includes a ballast lateral resistance test device and a ballast longitudinal resistance test device, wherein: The ballast bed lateral resistance testing device comprises a connecting base, a lateral pad, an oil cylinder and a pressure gauge, wherein the connecting base is connected to the lateral pad via the oil cylinder, and the pressure gauge is arranged between the lateral pad and the oil cylinder; The roadbed longitudinal resistance testing device comprises a connecting base, a longitudinal pad, an oil cylinder, a nylon block and a pressure gauge, wherein the connecting base is connected to the longitudinal pad through the oil cylinder, and the nylon block is respectively arranged on the outer side of the connecting base and the outer side of the longitudinal pad; It also includes a displacement meter and a pressure meter. The displacement meter includes a micrometer and a matching magnetic universal connection meter seat.

2. A roadbed resistance testing device according to claim 1, characterized in that: The connecting base is provided with a threaded hole, through which the connecting base is connected to one end of the oil cylinder, and the other end of the oil cylinder is connected to the transverse pad or the longitudinal pad; the connecting base is provided with a stepped hole, through which the connecting base is connected to the clamping tooling.

3. A roadbed resistance testing device according to claim 1, characterized in that: The connecting base matches the structure of the Pandro clamping tool or the structure of the V-shaped clamping tool.

4. A roadbed resistance testing device according to claim 3, characterized in that: When the connecting base is matched with the V-shaped clamping fixture, a connecting seat is arranged between the oil cylinder and the pressure gauge.

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