CN104624747A - Small-radius-curve groove rail bending device and installing and using method - Google Patents

Abstract

The invention discloses a small-radius-curve groove rail bending device. The small-radius-curve groove rail bending device comprises a rail bending platform, a hydraulic jack and a groove rail jacking device, and is characterized in that the rail bending platform is composed of a feeding platform, a rail bending platform body and a bearing platform, and the rail bending platform body is composed of a platform support, longitudinal transmission rollers and a transverse transmission roller. The groove rail jacking device is composed of a U-shaped steel ingot and a steel sleeve, wherein the U-shaped steel ingot is customized according to the inner structural form of a groove rail. An installing and using method of the small-radius-curve groove rail bending device is characterized by including the first step of setting up the rail bending platform, the second step of installing the groove rail, the third step of installing the groove rail jacking device, the fourth step of installing the hydraulic jack and an oil pump, the fifth step of conducting rail bending operation, and the sixth step of inspecting. The small-radius-curve groove rail bending device and the installing and using method have the advantages that the problems of hard bending and curve irregularity existing during small-radius-curve groove rail bending can be solved effectively, and construction cost is saved.

Description

A grooved rail small-radius curved rail device and its installation and use method

technical field

The invention relates to the technical field of modern tram construction, in particular to a grooved rail small-radius curved rail bending device and an installation and use method. It is suitable for the construction when the track turns in a narrow space in the turning zone of the intersection during the track construction process.

Background technique

As a domestic emerging industry, modern trams are advanced because of their trough track and their location in the central partition of existing municipal roads. However, during the track construction process, the narrow space in the turning zone at the intersection makes it necessary to use a small-radius curve when turning the track, and the technology of the small-radius curved track of the trough track that requires a curved track is the first in China. The curved track of the trough track cannot be constructed by the traditional technology, and it is easy to form a hard bend, that is, the curve is not smooth, and the tram is likely to roll over.

Contents of the invention

The purpose of the present invention is to solve the problems existing in the prior art, and create a grooved rail small-radius curved rail device and its installation and use method, effectively solving the hard bending and curve irregularities in the grooved rail small-radius curved rail .

The principle of the present invention is to use a specially customized curved rail jacking device in conjunction with a hydraulic jack to bend the small radius curve of the grooved track, and control the positive vector of the curve through the reading of the oil pressure gauge. At the same time, the supporting feeding device is used to mechanize the operation of the curved rail.

The object of the present invention is achieved in this way: a small-radius curve curved rail device for grooved rails, including a curved rail platform, a hydraulic jack and a grooved rail jacking device, is characterized in that: the curved rail platform is composed of a feeding platform, a curved rail The curved rail platform is composed of a platform bracket, a longitudinal transmission roller and a horizontal transmission roller. The hydraulic jack is placed on the platform bracket, and the grooved rail lifting device is placed at the front end of the hydraulic jack to adjust the position of the hydraulic jack. , so that the middle of the grooved track jacking device is aligned with the middle of the grooved track.

The jacking device of the trough track is composed of a U-shaped steel ingot customized according to the inner structure of the trough track and a steel sleeve. The top and both sides of the U-shaped steel ingot are polished into arcs to ensure that they can be aligned with the groove track when bending. The rail waist is closely attached, one end of the steel sleeve and the steel ingot are fixed by welding, and the other end is made into a cylindrical sleeve on the top of the hydraulic jack.

A method for installing and using a grooved rail small-radius curved rail device, characterized in that the following steps are performed:

1. Build the curved rail platform. Before the curved rail, build the curved rail platform. The first part is the feeding platform, the second part is the curved rail platform, and the third part is the receiving platform. The curved rail platform consists of platform brackets, longitudinal transmission rollers and Composition of horizontal drive rollers;

2. Install the grooved track, place the grooved track on the horizontal transmission roller of the platform bracket, adjust the longitudinal transmission roller to fix the position of the grooved track in the groove formed by the horizontal transmission roller and the longitudinal transmission roller;

3. Install the trough track lifting device, place the hydraulic jack on the platform support, place the trough track lifting device on the front end of the hydraulic jack, and adjust the position of the hydraulic jack so that the middle part of the trough track lifting device is in line with the groove Align the middle of the type track;

4. Install the hydraulic jack and the oil pump, connect the hydraulic jack to the oil pump through the oil pipe, and connect the power supply of the oil pump;

5. Operation of curved rails. Before bending rails, calculate the curve radius of the rails according to the designed curve, and then calculate the oil meter reading on the oil pump corresponding to the elongation of the hydraulic jack according to the positive vector of the curves; when bending rails, follow the calculated oil gauge. The meter reading controls the elongation of the hydraulic jack through the oil pump; every time a part is lifted and bent, the track is driven forward through the horizontal drive roller and the longitudinal drive roller to perform the bending operation of the next bending point;

6. Check, repeat the above operation steps, and check whether the curved curve sine vector meets the design requirements after completing the bending of the entire rail. If there is any deviation, use this device to correct the deviation.

Compared with the prior art, the invention has the advantages that it can effectively solve the phenomenon of hard bending and uneven curve in the small-radius curved track of the trough track, and save the construction cost.

Description of drawings

Fig. 1: On-site construction schematic diagram of the present invention.

In the figure: 1. Groove track 2. Platform support 3. Longitudinal drive roller 4. Horizontal drive roller 5. Groove track jacking device 6. Hydraulic jack 7. Oil pipe 8. Oil pump.

Detailed ways

In order to further describe the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings.

As shown in the figure, a small-radius curved rail bending device for grooved rails of the present invention includes a curved rail platform, a hydraulic jack 6 and a grooved rail lifting device 5, and is characterized in that: the curved rail platform is composed of a feeding platform, a curved rail The curved rail platform is composed of a platform support 2, a longitudinal transmission roller 3 and a transverse transmission roller 4. The hydraulic jack 6 is placed on the platform support 2, and the grooved track lifting device 5 is placed on the hydraulic jack 6. At the front end, adjust the position of the hydraulic jack 6 so that the middle part of the grooved track lifting device 5 is aligned with the middle part of the grooved track 1 .

The trough track lifting device 5 is composed of a U-shaped steel ingot customized according to the inner structure of the trough track and a steel sleeve. The top and both sides of the U-shaped steel ingot are polished into arcs to ensure that they can be aligned with the groove shape when bending. The rail waist of the track is closely attached, one end of the steel sleeve and the steel ingot are fixed by welding, and the other end is made into a cylindrical sleeve on the top of the hydraulic jack.

A method for installing and using a grooved rail small-radius curved rail device, characterized in that the following steps are performed:

1. Build the curved rail platform. Before the curved rail, build the curved rail platform. The first part is the feeding platform, the second part is the curved rail platform, and the third part is the receiving platform. The curved rail platform consists of platform bracket 2 and longitudinal drive rollers. 3 and the horizontal transmission roller 4;

2. Install the grooved track, place the grooved track 1 on the horizontal transmission roller 4 of the platform bracket 2, adjust the longitudinal transmission roller 3 so that the position of the grooved track 1 is fixed in the groove formed by the horizontal transmission roller 4 and the longitudinal transmission roller 3 Inside;

3. Install the trough rail jacking device, place the hydraulic jack 6 on the platform support 2, place the trough rail jacking device 5 on the front end of the hydraulic jack 6, adjust the position of the hydraulic jack 6, and lift the trough rail The middle part of the device 5 is aligned with the middle part of the grooved track 1;

4. Install the hydraulic jack and the oil pump, connect the hydraulic jack 6 to the oil pump 8 through the oil pipe 7, and connect the power supply of the oil pump;

5. Operation of curved rails. Before the curved rails, calculate the curve radius of the rails according to the designed curve, and then calculate the oil meter reading on the oil pump 8 corresponding to the elongation of the hydraulic jack 6 according to the positive vector of the curves; when bending the rails, follow the calculated The reading of the oil gauge controls the elongation of the hydraulic jack 6 through the oil pump 8; every time a part is lifted and bent, a part of the track is driven forward through the horizontal transmission roller 4 and the longitudinal transmission roller 3 to perform the bending operation of the next bending point;

6. Check, repeat the above operation steps, and check whether the curved curve sine vector meets the design requirements after completing the bending of the entire rail. If there is any deviation, use this device to correct the deviation.

The No. 1 line project of the modern tramway first phase project in Hunnan New City, Shenyang City, Liaoning Province adopts the present invention to carry out the curved rail construction of the small-radius curve of the trough track, and there are 196 curved rails in total. Refer to other curved rails to carry out the operation of this project. The labor cost for each rail (including the correction of unqualified curved rails) is 160, and the material cost is 1680 yuan. Use the technology of the present invention to invest 82 yuan in labor, 240 yuan in material costs, and 18 yuan in a mechanical shift. The whole project saved a total construction cost of 196×(160+1680-82-240-18)=294,000 yuan.

Claims (3)

1. the curved rail device of grooved rail sharp radius curve, comprise curved rail platform, hydraulic jack (6) and grooved track jacking device (5), it is characterized in that: described curved rail platform is by material conveying platform, curved rail platform and bearing platform composition, wherein curved rail platform is by platform support (2), longitudinal live roller (3) and horizontal live roller (4) composition, hydraulic jack (6) is placed on platform support (2), grooved track jacking device (5) is placed in the front end of hydraulic jack (6), regulate the position of hydraulic jack (6), alignd with the middle part of grooved track (1) in the middle part of grooved track jacking device (5).

2. the curved rail device of a kind of grooved rail sharp radius curve according to claim 1, it is characterized in that: described grooved track jacking device (5), be made up of a U-shaped steel ingot according to the customization of grooved track inside structure form and a steel bushing, the both sides, top of U-shaped steel ingot are polished to arc, can be closely connected with the web of the rail of grooved track when guaranteeing bending, one end of steel bushing and steel ingot are by being welded and fixed, and the other end makes the top that cylinder type is enclosed within hydraulic jack.

3. the installation and application of the curved rail device of a kind of grooved rail sharp radius curve according to claim 1, is characterized in that, carry out according to the following steps:

1), curved rail platform is built, before curved rail, first build curved rail platform, Part I is material conveying platform, and Part II is curved rail platform, Part III is bearing platform, and wherein curved rail platform is made up of platform support (2), longitudinal live roller (3) and horizontal live roller (4);

2), grooved track is installed, grooved track (1) is placed on the horizontal live roller (4) of platform support (2), in regulate longitudinal live roller (3) that grooved track (1) position is fixed on groove that horizontal live roller (4) and longitudinal live roller (3) formed;

3), grooved track jacking device is installed, hydraulic jack (6) is placed on platform support (2), grooved track jacking device (5) is placed in the front end of hydraulic jack (6), regulate the position of hydraulic jack (6), alignd with the middle part of grooved track (1) in the middle part of grooved track jacking device (5);

4), hydraulic jack and oil pump are installed, hydraulic jack (6) is connected with oil pump (8) by oil pipe (7), connect the power supply of oil pump;

5), the operation of curved rail, first calculate the sweep of track before curved rail according to the curve of design, then calculate the oil meter reading on oil pump (8) corresponding to the elongation of hydraulic jack (6) according to curve versine; According to the elongation of the oil meter reading calculated by oil pump (8) hydraulic control jack (6) during curved rail; Every jacking bending position, carries out the bending operation of next bending point by horizontal live roller (4) and longitudinal live roller (3) by a track Forward drive part;

6), check, repeat aforesaid operations step, complete the bending rear of whole track and check whether bending curve versine meets designing requirement, rectifies a deviation if there is this device of deviation.