SU1509613A1 - Device for weighing railway train by wheels - Google Patents

Abstract

The invention relates to devices for determining the mass of trains, namely for determining the axial loads of railcars. The purpose of the invention is to increase the accuracy of weighing and increase operational reliability. A device for the sequential weighing of railway trains contains rails 1 laid on wooden sleepers, in which two grooves 2, perpendicular to the rail bearing surface, rail link 3 are separated. Rail section 3 has a load receiving section 4 with load sensors installed on the neck of the load bearing section of the rail 4 and associated with the display and registration units. In the neck of the cargo-receiving section of the rail 4 there is a through slot of an open rectangle 5 with a jumper 6, two opposite sides 7 which are perpendicular to the longitudinal axis of the rail. Load sensors are made in the form of four pairs of measuring 8 and complex 9 strain gauges located on both sides of the rail neck so that the middle of the base strain gauges coincides with the neutral axis of the rail section profile 10. Measurement 8 strain gauges are located on the sections, midway between the lateral sides 7 of the rectangle 5 and grooves 2, and compensation strain gages 9 - in the area between the lateral sides 7 of the rectangle 5 in places where there is no deformation from the applied force. The depth of the grooves 2 is greater than the distance from the supporting surface to the neutral axis of the rail section section 10 by the length of the base of the strain gauge. The force-measuring sensors are protected against mechanical damage by setting standard butt plates on both sides of the rail neck, which are bolted through the opening 11. The displacement of the head of the load-receiving section of the rail 4 is eliminated by welding clamps 12 to it. Active strain gages 8 are connected in series and form one of the full arms strain gauge bridge, the remaining two arms of which form compensatory strain gauges 9. The device is equipped with guide beams (counter rails) 13, providing when the train passes through the device, the wheels are supported on the rails at the same points, which increases the stability of the weighing results. 2 Il.

Description

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Zero resistors located on both sides of the rail neck so that the center of the strain gauges base coincides with the neutral axis of the rail section 10. The measuring strain gauges 8 are located in the areas between the lateral sides 7 of the rectangle 5 and the slots 2, and the compensation strain gauges 9 - in the area between the lateral sides 7 of the rectangle 5 in places where there is no deformation due to the applied force. The depth of the grooves 2 is greater than the distance from the support surface to the neutral axis of the rail section profile 10. to the length of the base of the strain gauge. The invention relates to devices for determining the mass of railway trains, namely, for determining the axial loads of cars, in particular, for weighted locomotives while adjusting them.

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The aim of the invention is to increase the weighing accuracy and increase operational reliability.

Figure 1 shows the proposed device, top view; Fig. 2 shows the structure of a load-receiving area with load sensors;

A device for the sequential weighing of railway trains contains rails 1 laid on wooden sleepers, in which a rail link 3 is provided with two grooves 2 perpendicular to the rail surface (figure 1).

On the rail link 3 is formed

cargo reception section 4 with load sensors mounted on the neck of the cargo receiving section of rail 4 and associated with the display and recording units (not shown).

In the neck of the cargo-receiving section of the rail 4 there is a through slot of an open rectangle 5 with a jumper 6, two opposite sides 7 of which are perpendicular to the longitudinal axis of the rail.

Load sensors performed -. . are in the form of four pairs of measuring (active) 8 and compensatory 9 ten4

Putting standard butt plates on both sides of the rail neck, which attach the bolt through hole 1, the displacement of the head of the load receiving section of the rail 4 is prevented by welding clamps 12 to it. The active resistance strain gages 8 are connected in series and form one of the shoulders of the strain gauge bridge, the other two the shoulders of which form compensating strain gauges 9. The device is equipped with guide beams (counter rails) 3, which ensure the passage of the train through the device wheels on rails at the same points, which increases the stability of weighing, 2 silt,

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of the resistors located on both sides of the rail neck in such a way that the middle of the base of the strain gauges coincides with the neutral axis of the rail section section 10. The active strain gauges 8 are located in the sections, midway between the lateral sides 7 of the rectangle 5 and the slots 2, and the compensation 9 are on the area between the lateral cTOpOHaixtti 7 of rectangle 5 in places where there is no deformation from the applied force.

The depth of the grooves 2 exceeds the distance from the supporting surface to the neutral axis of the rail section section 10 by the length of the base of the strain gauge.

The force-measuring sensors are protected from mechanical damage by placing standard butt plates (not shown) on both sides of the rail neck, which are bolted through holes 11.

The upper part of the butt plates in the area of the load sensors is cut by two millimeters for armature. ki transfer through it part of the load on the rail foot. The displacement of the head of the load-bearing section of the rail 4 is eliminated by welding clamps 12 thereto, which are a wide plate that has a large moment of resistance to bending in the vertical plane.

The independence of the readings of the device from the position of the wheel in the load area 4 is obtained by setting

laziness of the same transmission ratios in the areas located between the sides 7 of the rectangle 5 and the slots 2.

Active strain gauges 8 are connected in series and form one and full strain gauge bridge bridge the other two arms of which form compensatory strain gauges 9. Strain gauge bridge formed by strain gauges 8 and 9 is connected to a strain amplifier, which is connected to a recording instrument.

The device is equipped with guides.

beams (counter rails 3, ensure the wheels are supported on the rails at the same points when the train passes through the device, which increases the stability of the weighing results. The distance between the working faces of the counter rails 13 is equal to the minimum possible attachment of wheel pairs of railway trains .

The device works as follows.

When rolling a train through a device for the sequential weighing of trains, load sensors completely perceive the effect of the load and transmit it by means of an axle bridge bridge strain gauge in the form of electrical signals through an amplifier and recording device. The change in temperature is compensated by the action of compensation strain gages 9,

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which ensures high temperature stability of the device.

Claims (1)

Invention Formula An apparatus for weighing pokolesnogo zheleznodorozhnyh.sostavov comprising a rail element allocated two slots perpendicular to the supporting surface and ~ at which the load is formed uchaetok, eiloizmeri- Tel'nykh sensors, the load on the neck uetanovlennye uchaetka relea and associated with blocks indicating and registering, wherein that, in order to increase the weighing accuracy and increase the operational reliability, a slit is made in the neck of the load receptor in the form of an open rectangle with Sliver in one of the sides, with two opposite Hbie sides of the rectangle perpendicular to the longitudinal axis of the relief, and the jumper is facing the bearing surface of the rail, the measuring sensors are made in B1 more than four pairs of measuring and compensating strain gauges located symmetrically on both sides of the relief neck and connected to the bridge, the metering strain gauges are located on the uchetkahs in the middle between the responding lateral sides of the rectangle and the grooves between the sides of the rectangle, with the depth of the grooves exceeding the distance from the supporting surface to the neutral axis of the rail section profile by the length of the base of the strain gauge p p p p p p p p p p / LTU / U U U U U U UV .one Editor G. Volkova Compiled by T.Ishkova Tehred M.Hodanich Order 5790/32 Circulation 660 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Corrector S.Cherni Subscription