CN217378410U - Multifunctional track elevation adjusting device with adjustable rigidity, vibration reduction, energy dissipation and force measurement functions - Google Patents

Abstract

The utility model discloses a multifunctional track elevation adjustment device with adjustable rigidity, vibration reduction, energy dissipation and force measurement, comprising a chute basin, a wedge block, a jacking block and a tensioner. In the groove basin, the wedge blocks can slide in the chute basin, so as to approach or move away from each other. The upper part of the wedge block is provided with an inclined surface, and the inclined surfaces of the two wedge blocks are arranged opposite to each other, and the jacking block is placed between the two wedge blocks. Between the inclined planes, wherein: the tensioner includes a number of parallel tensioning units, each tensioning unit includes a tensioning bolt and a tensioning nut, the tensioning bolt passes through two wedges at the same time, and one end is One of the wedge blocks is positioned and matched, and the other end passes through the other wedge block, and then the pull nut is put on, and the pull nut is rotated on the pull bolt to make the two wedge blocks close. The utility model can adjust the supporting rigidity, so that the whole wedge is uniformly stressed, preventing the damage of the track elevation adjusting device, and at the same time realizing the monitoring of the dynamic change of the track load.

Description

A multifunctional rail elevation adjustment device with adjustable stiffness, vibration reduction, energy dissipation and force measurement

technical field

The utility model belongs to the technical field of rail engineering, in particular to a multifunctional rail elevation adjustment device with adjustable stiffness, vibration reduction, energy dissipation and force measurement.

Background technique

With the rapid development of my country's rail transit, local track sections under various geological conditions, basic conditions, environmental conditions and other factors may have overall settlement or differential settlement that does not meet the requirements of operation and maintenance. In order to ensure the safe running of trains, it is necessary to The subsidence track section is lifted. At the same time, due to the expansion of the subgrade filler, the foundation soil, or the temperature stress between the ballast slab and the support layer in the ballastless track structure, the arch diseases on the track appear one after another, so the daily maintenance of the track surface elevation becomes difficult.

At present, a common method of lifting the ballasted track is to raise the sleeper elevation by adding ballast under the sleeper, thereby raising the rail surface elevation; for the ballastless track, a common method is to directly lift the track, and then fill it by grouting Gap between track and sleeper. The above-mentioned rail lifting methods are complicated in construction and time-consuming and labor-intensive. Grouting operation requires special equipment and operation team, which increases the daily maintenance cost.

When the ballastless track has a small degree of upper arching disease, it is usually adjusted by adjusting the fastener pad. When the upper arching disease is to a large extent, it is almost impossible to adjust, and it is often treated by speed-limited operation or demolition and reconstruction. .

If the upper arch disease of the ballastless track and the subsidence of the foundation occur at the same time, different positions of the local track section need to be raised or lowered, which is difficult to deal with by the existing single method, and the cost of demolition and reconstruction is high.

The construction of artificial ballast is supplemented, and the construction accuracy and efficiency are based on the experience of the construction personnel. Adding or removing ballast under the sleepers makes it difficult to control the construction elevation, which increases the difficulty of construction to a certain extent and prolongs the construction period. Due to the large amount of rail elevation adjustment, long-span railway bridges should not use track slabs. Generally, ballast tracks are laid. By adding ballast to adjust the rail elevation, the dead load weight of the bridge deck increases, thereby greatly increasing the cost of the bridge.

The long-span prestressed concrete bridge needs to be adjusted during the operation period due to the later shrinkage and creep, and this technology can also be applied.

The vibration of rail transit operation may cause the environmental vibration of surrounding structures to exceed the limit. Therefore, in the protection of important structures close to rail transit, such as cultural relics buildings and important laboratories, a large number of vibration-absorbing fasteners or vibration-absorbing track bed slabs are used, but prefabricated vibration-damping tracks The vibration reduction effect of the bed board after installation cannot be adjusted, which may not meet the actual vibration reduction requirements. The utility model provides a device with adjustable support stiffness and adjustable vibration reduction effect, which can be adjusted according to specific geological conditions and important structures. Vibration reduction needs, combined with the dynamic adjustment of the actual application effect, to better meet the actual needs of the project.

At the same time, the utility model can be used for monitoring the dynamic change of the vertical load of the train in the whole life cycle of the track by adding a force measuring sensor in the adjusting nut on the transverse screw. The driving anomalies caused by track wear, foundation deformation, loose track fasteners, etc. can be reflected in the monitoring waveform of load changes, and the vehicle running status data (vehicle weight, passenger weight of different carriages, vehicle speed, etc.) can be provided in real time. Smart rail transit operation and maintenance provides basic data.

Based on this, the present utility model provides a multi-functional rail elevation adjustment device with adjustable stiffness, vibration reduction, energy dissipation and force measurement, which can easily and quickly adjust the rail height (higher or lower), and design the support stiffness according to the support requirements of the track structure. , the vibration reduction effect is designed according to the vibration reduction requirements of the surrounding important structures and can be adjusted according to the actual vibration reduction effect. It provides real-time vehicle operation status data (vehicle weight, passenger weight of different carriages, vehicle speed, etc.), provides basic data for smart rail transit operation and maintenance, and has great application value in engineering construction and system operation and maintenance.

Utility model content

The purpose of this utility model is to solve the problems mentioned in the background art, and to provide a multi-functional rail elevation adjustment device that can be adjusted in height, can be adjusted in stiffness, can reduce vibration, dissipate energy, and can measure force.

In order to realize the above-mentioned technical purpose, the technical scheme adopted by the present utility model is:

A multi-functional track elevation adjustment device with adjustable stiffness, vibration reduction, energy dissipation and force measurement, including chute basin, wedge block, jacking block and tensioner. In the groove basin, the wedge blocks can slide in the chute basin, so as to approach or move away from each other. The upper part of the wedge block is provided with an inclined surface, and the inclined surfaces of the two wedge blocks are arranged opposite to each other, and the jacking block is placed between the two wedge blocks. Between the inclined surfaces, when the two wedge blocks are close to each other, the inclined surface squeezes the jacking block, so that the jacking block rises, and a track is installed on the jacking block. Each tensioning unit includes a tensioning bolt and a tensioning nut. The tensioning bolt passes through two wedges at the same time, and one end is positioned and matched with one of the wedges. Pull the nut, and make the two wedges close by turning the pull nut on the pull bolt.

In order to optimize the above technical solutions, the specific measures taken also include:

A dynamometer is installed on the above-mentioned tension nut, and the dynamometer is used to measure the load change of the tensioner.

The lower part of the above-mentioned lifting block is provided with a triangular convex block, the two sides of the triangular convex block are inclined surfaces, the triangular convex block is located between the two wedge blocks, and the two inclined surfaces of the triangular convex block are respectively connected with the inclined surfaces of the two wedge blocks. The slope is consistent, and the slope of the triangular bump and the slope of the wedge can be closely fitted.

A damping block is installed on the upper surface of the above-mentioned lifting block, a rail pad is installed on the damping block, and the rail is installed on the rail pad.

The inclined surfaces of the above two wedges are correspondingly provided with convex and concave. When the wedges are close to each other, the convexity can be inserted into the concave, so that the wedges can cross each other and slide and increase the stroke of the wedges.

The above-mentioned damping block is an integral structure in which multi-layer steel plates and rubber are vulcanized and connected to each other. The damping block has reserved holes and a sleeve for vulcanization connection. The sleeve and the track pad are connected by bolts.

The four corners of the above-mentioned jacking block can be locked and matched with the chute basin through pre-tightening bolts.

The inclined surface of the wedge block extends from the left end of the wedge block to the right end of the wedge block. Correspondingly, the pair of pulling units are arranged from the left end of the wedge block to the right end of the wedge block, and each pair of pulling units is arranged at equal intervals.

The above-mentioned chute basin is fixedly installed with lateral baffles on the left and right sides of the wedge, and the lateral baffles are used to shield the left and right sides of the wedge.

Among the above-mentioned two wedges, one of the wedges is provided with three convexities and two concaves, and the other wedge is provided with two convexities and three concaves, and the convexities and concavities of the same wedge are arranged in sequence. .

The utility model has the following advantages:

1. The utility model is provided with a plurality of anti-pulling units, which are arranged in parallel and pass through two wedge blocks at the same time, and the anti-pulling units are arranged from the left end of the wedge block to the right end of the wedge block, and the anti-pulling units are arranged at equal intervals. Compared with the prior art, this arrangement can realize the adjustable support stiffness of the wedge block at different positions. When the support stiffness of a certain position of the wedge block decreases due to problems such as uneven settlement, the tension unit of the position can be adjusted correspondingly. , so as to ensure that the overall stress of the wedge is uniform and prevent the damage of the track elevation adjustment device.

2. The utility model is equipped with a force measuring device on each pair of pulling units, which can be used for monitoring the dynamic change of the vertical load of the train in the whole life cycle of the track. The driving anomalies caused can be reflected from the monitoring waveforms of the load changes, which in turn provide information support for the adjustment of the pair-pulling unit.

3. The utility model is provided with a vibration damping block, which realizes the vibration damping and energy dissipation of the train vibration in the transmission path.

4. The utility model is provided with a stroke extension structure, and the correspondingly arranged wedge blocks are convex and concave. When the length of the chute basin is small, the stroke of the wedge block is increased, and the lifting distance of the jacking block is further increased. .

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is the assembly sequence diagram of the present utility model;

Fig. 3 is the structural representation of the chute basin of the present utility model;

Fig. 4 is the structural representation of the wedge block of the present utility model;

Fig. 5 is the assembly schematic diagram of the lifting block and the damping block of the present invention;

Fig. 6 is the assembly schematic diagram of the tensioner and the force measuring device of the present utility model;

Fig. 7 is the structural representation of the horizontal baffle plate of the present utility model;

Fig. 8 is the split view of the lifting block and the damping block of the present invention;

FIG. 9 is a schematic diagram of the lifting block of the present invention.

Names marked in the figure: Chute basin 1, wedge block 2, jacking block 3, vibration damping block 31, pre-tightening bolt 32, tensioner 4, tension bolt 41, tension nut 42, dynamometer 43, track Pad 5, track 6, transverse baffle 7.

Detailed ways

The embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Referring to Figures 1 to 9, the multi-functional rail elevation adjustment device of the present invention with adjustable stiffness, vibration reduction, energy dissipation and force measurement,

It includes a chute basin 1 , a wedge block 2 , a jacking block 3 and a tensioner 4 . A damping block 31 is installed on the jacking block 3 , and a track pad 5 is installed on the damping block 31 . A lateral baffle 7 is installed on the side of the chute basin 1 . The wedge block 2 has an inclined surface and a bottom surface, the lower part of the jacking block 3 has an inclined surface, and a wear-resistant, weather-resistant and low-resistance engineering plastic panel is installed on the inclined surface;

The top surface of the chute basin 1 is wide along the two sides of the track, and the top surface on both sides of the track is narrower;

Two wedge blocks 2 are provided, which are installed in the chute basin 1 and are slidably connected with the chute basin 1; One of them is provided with 3 convex blocks, 2 blocks are concave, the other is provided with 2 blocks convex, 3 blocks are concave, and the convex slopes of the two wedge blocks 2 are opposite. Through holes are provided on the outer convex and the inner concave to accommodate the passage of the tensioner 4 .

The cross section of the jacking block 3 is generally triangular. The upper part of the jacking block 3 is a special-shaped structure with a trapezoidal groove inside. The solid part of the lower part of the jacking block 3 is a triangular bump. The two sides of the triangular bump are two inclined surfaces. The triangular bump is located between the two wedges 2. The slope of the inclined surface is the same, and the inclined surface of the triangular convex block and the inclined surface of the wedge block 2 can be closely fitted. The triangular bump has 3 notches to allow the tensioner 4 to pass through;

The chute basin 1, the jacking block 3 and the transverse baffle 7 are provided with several bolt holes. The top of the jacking block 3 and the chute basin 1 correspond to the vertical bolt holes of the two; the lateral baffle 7 and the side of the chute basin 1 correspond to the horizontal bolt holes of the two;

A horizontal force is applied along the tensioner 4 to drive the wedge block 2 to slide in the chute basin 1, thereby adjusting the distance between the two wedge blocks 2, and the slope of the jacking block 3 and the slope of the wedge block 2 slide relative to , and then make the jacking block 3 rise or fall, so as to realize the function of adjusting the height of the cushion block.

A through hole is provided on the wedge block 2; the tensioner 4 can pass through the through hole;

A platform is provided on one of the protrusions of the wedge blocks 2, and the platform is closely fitted with the bottom of the lifting block 3 at the lowest position;

The upper part of the jacking block 3 is surrounded by solid cantilevers, and bolt holes are provided at four corners respectively. The four corner bolt holes are used for the jacking block 3 and the chute basin 1. After the four corner bolts are tightened, the jacking block 3 is locked;

The chute basin 1 is a rectangular basin-type component, and is provided with flanges around it;

The bottom of the wedge block 2 is provided with a notch matched with the flange, the wedge block 2 is embedded in the chute basin 1 through the notch and the flange, and can slide relative to the chute basin 1 .

The damping block 31 is an integral structure in which multi-layer steel plates and rubber are vulcanized and connected to each other. A hole is reserved on the damping block 31, and there is a vulcanized connection sleeve inside. The sleeve and the track pad 5 are connected by bolts. The vibration damping block 31 is used in the running of the train, and the vibration damping and energy dissipation on the propagation path can meet the requirements of environmental vibration.

The tensioner 4 is a high-strength bolt tensioning system.

The center of the wedge block 2 is provided with a through hole for the tensioner 4 to pass through, and then the wedge block 2 is pushed through the tensioner 4 .

The tensioner 4 is provided with a force measuring device 43 . It can be used to monitor the dynamic change of the vertical load of the train in the whole life cycle of the track.

The specific installation sequence of the utility model is shown in Figure 2. When in use, drill holes in the design position of the track plate, and install the transverse baffle 7. Further, install the chute basin 1, put the wedge 2 into it, and check whether the wedge 2 can move smoothly. Further, pass through the tensioner 4 . Further, the jacking block 3 and the damping block 31 are installed, and their combined structure is put into the chute basin 1 . Further, install the track spacer 5 and make the track 6 in place firmly. By twisting the nut on the tensioner 4, the jacking block 3 reaches the predetermined elevation. After the device is in place, the device tightens the bolts and nuts between the transverse baffle plate 7, the jacking block 3 and the chute basin 1, and the locking device completes this operation. device installation.

The utility model can be used together with the ballastless track, and the installation process is similar to that of the first embodiment. When the daily operation and maintenance of the ballastless track needs to be raised, the rail surface elevation curve after adjustment is drawn up in advance, and the bolts are directly twisted on site to adjust the rail surface elevation to reach the predetermined value.

The utility model can be used for the complex diseased section of the ballastless track, and the installation process is similar to that of the first embodiment. When complex diseases of arching and settlement occur at the same time in different positions of the local ballastless track, the rail surface elevation curve after adjustment is drawn up in advance, and the bolts are directly twisted on site to adjust the rail surface elevation. Specifically, the elevation of the rail surface is increased for the subsidence diseased area; the elevation of the rail surface is lowered for the arched diseased area, so that the local track is finally smooth and meets the requirements of operation and maintenance.

In the utility model, a downward pre-tightening force can be applied to the jacking block through the pre-tightening bolts, so that the structures are strained against each other, the contact is tight, and the force measuring device has a reading and is stable at a predetermined value. As the train passes, the dynamometer readings change, which in turn measures the vertical load change that occurs when the train passes. Traffic anomalies caused by track wear, foundation heave, loose track fasteners, etc. can be reflected in the monitoring waveform of load changes, which provides a new method for monitoring the force of track structures.

The utility model can realize the adjustment of the support rigidity of the track structure by changing the cross-sectional area and the tensioning quantity of the tensioner. It can be used at the connection between bridge and roadbed, the connection between tunnel and roadbed, and the section where the geological conditions change strongly. By adjusting the support stiffness of the track structure, the overall force of the track structure is more uniform.

The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims (10)

1. A multifunctional track elevation adjustment device with adjustable stiffness, vibration reduction, energy dissipation and force measurement, including a chute basin (1), a wedge block (2), a jacking block (3) and a tensioner (4). The two wedges (2) are arranged in two, and the two wedges (2) are respectively installed in the chute basin (1), and the wedges (2) can slide in the chute basin (1), thereby approaching each other or The upper part of the wedge block (2) is provided with an inclined surface, and the inclined surfaces of the two wedge blocks (2) are arranged opposite to each other, and the jacking block (3) is placed between the inclined surfaces of the two wedge blocks (2). so that when the two wedges (2) are close to each other, the inclined surface squeezes the jacking block (3), so that the jacking block (3) rises, and the track (6) is installed on the jacking block (3), which is characterized by: : The tensioner (4) includes several parallel tensioning units, each of which includes a tensioning bolt (41) and a tensioning nut (42). The tensioning bolt (41) ) passes through two wedges (2) at the same time, and one end is positioned and matched with one of the wedges (2). The nut (42) is rotated on the tension bolt (41) to make the two wedges (2) close. 2. The multi-functional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation and force measurement according to claim 1, characterized in that: a dynamometer (43) is installed on the said pair of pull nut (42) , the force measuring device (43) is used to measure the load change of the tensioner (4). 3. The multi-functional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation and force measurement according to claim 2, characterized in that: the lower part of the lifting block (3) is provided with a triangular convex block, so the The two sides of the triangular bump are inclined surfaces, the triangular bump is located between the two wedges (2), and the two inclined surfaces of the triangular bump are respectively the same as the slopes of the two wedges (2). The inclined surface and the inclined surface of the wedge block (2) can be closely fitted. 4. The multifunctional rail elevation adjusting device with adjustable stiffness, damping, energy, and force measurement according to claim 3, characterized in that: the upper surface of the lifting block (3) is provided with a damping block (31). ), a rail pad (5) is mounted on the vibration damping block (31), and the rail (6) is mounted on the rail pad (5). 5. The multifunctional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation, and force measurement according to claim 4, characterized in that: the inclined surfaces of the two wedge blocks (2) are correspondingly set outside the Convex and concave, when the wedges (2) are close to each other, the outer convexity can be inserted into the inner concave, so that the wedges (2) can cross each other and slide, and the stroke of the wedges (2) is increased. 6. The multi-functional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation and force measurement according to claim 5, characterized in that: the vibration damping block (31) is a multi-layer steel plate and rubber that are mutually vulcanized and connected The overall structure of the vibration damping block (31) is reserved with a hole, and a sleeve connected by vulcanization is arranged inside, and the sleeve is connected with the track spacer block (5) by bolts. 7. The multi-functional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation and force measurement according to claim 6, characterized in that: the four corners of the jacking block (3) can pass through the pre-tightening bolts (32) Lock and fit with the chute basin (1). 8. The multi-functional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation and force measurement according to claim 7, characterized in that: the inclined surface of the wedge block (2) extends from the wedge block (2). The left end extends to the right end of the wedge block (2), correspondingly, the pair of pulling units are arranged from the left end of the wedge block (2) to the right end of the wedge block (2), and each pair of pulling units is arranged at equal intervals. 9. The multi-functional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation and force measurement according to claim 8, wherein the chute basin (1) is on the left side of the wedge (2) A transverse baffle (7) is fixedly installed on the right side of the wedge block (7), and the transverse baffle (7) is used to block the left and right sides of the wedge block (2). 10. The multi-functional rail elevation adjusting device with adjustable stiffness, vibration reduction, energy dissipation and force measurement according to claim 9, characterized in that: among the two wedges (2), one of the wedges (2) is provided with three One is convex and two are concave, and the other wedge (2) is provided with two convex and three concave, and the convex and concave of the same wedge (2) are arranged in sequence.

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