Pressure sensor and pressure detection device for common sleeper installation

Abstract

The utility model discloses a pressure sensor and a pressure detection device for mounting a common sleeper, the pressure sensor comprises a long strip-shaped base body, and the middle part of the long strip-shaped base body protrudes towards two sides to form a boss; a through hole is formed in the center of the upper end face of the boss. A mounting hole I is also formed in the upper end surface of the boss; connecting holes I are formed in the two ends of the upper end face of the long-strip-shaped base body respectively. Blind holes are formed in the long-strip-shaped base body, and the blind holes are located in the two sides of the boss and are symmetrically formed. And a strain gauge is arranged in each blind hole. The pressure sensor and the pressure detection device for mounting the common sleeper meet the use requirement, do not need to replace a special sleeper, do not influence the tamping operation requirement of a large-scale machine, are convenient to mount and use and low in manufacturing cost, so that the detection interval length of a rail weighbridge and an overload and unbalance loading instrument is expanded, and the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to a pressure sensor and a pressure detection device for the installation of ordinary sleepers. Background Art

[0002] At present, in order to weigh and detect the loading capacity and loading quality of railway freight cars in operation in China, it is necessary to install dynamic track scales or dynamic overloading and offloading detection devices. In order to ensure the detection accuracy, it is required that the detection interval has sufficient length, and generally each detection interval is about 3600 mm. The previous practice was to use an integral concrete foundation or customized special sleepers connected into an integral foundation, and when designing, the installation position of the pressure sensor was designed in the integral concrete foundation according to the size and shape of the pressure sensor, or special sleepers specially designed to install the pressure sensor were used to realize the installation of the pressure sensor. The customized special sleepers have many disadvantages: high construction cost, long cycle, complex installation operation, and great difficulty in overhaul and maintenance. Summary of the Invention

[0003] The present invention provides a pressure sensor and a pressure detection device for the installation of ordinary sleepers, which meet the use requirements, do not require the replacement of special sleepers, do not affect the requirements of large-scale mechanical tamping operations, are convenient to install and use, and have low cost, so as to realize the extension of the detection interval length of the track scale and the overloading and offloading instrument, and improve the detection accuracy.

[0004] The technical solution adopted by the present invention is: a pressure sensor for the installation of ordinary sleepers, the pressure sensor includes a long strip-shaped base body, and the middle part of the long strip-shaped base body bulges towards both sides to form a convex platform; a through hole is opened at the center of the upper end surface of the convex platform; an installation hole Ⅰ is also opened on the upper end surface of the convex platform; connection holes Ⅰ are respectively arranged at both ends of the upper end surface of the long strip-shaped base body; blind holes are arranged on the long strip-shaped base body, and the blind holes are symmetrically arranged on both sides of the convex platform; a strain gauge is arranged in each blind hole.

[0005] Its further technical solution is: there are four installation holes Ⅰ, and the four installation holes Ⅰ are evenly distributed around the central axis of the through hole.

[0006] Another technical solution of the present invention is: a pressure detection device for the installation of ordinary sleepers, including the above-mentioned pressure sensor, a rail buckle bracket and an installation bottom plate; both ends of the pressure sensor are rigidly connected to the rail through a pair of rail buckle brackets, and the middle part of the pressure sensor is fixedly installed on the sleeper through the installation bottom plate.

[0007] Its further technical solution is: the rail buckle bracket is square, and an inner groove, a connection hole and an installation hole Ⅱ for installing the pressure sensor are arranged on the rail buckle bracket, and the size of the inner groove fits the lower convex edge of the cross section of the rail; installation holes Ⅲ for connecting with the sleeper and installation holes Ⅳ for installing the pressure sensor are arranged on the installation bottom plate;

[0008] In the assembled state, a pair of rail clip brackets are respectively located on the inner and outer sides of the rail, centered and buckled against the lower edge of the rail. Connecting bolts are inserted through the connecting holes and tightened to fix the rail clip brackets on the rail. The two ends of the strip-shaped base body of the pressure sensor are respectively fixedly installed on the rail clip brackets through the cooperation of fixing bolt III with connecting hole I and mounting hole II. The mounting hole III of the mounting base plate is located below the through hole opened on the boss. The mounting base plate is fixedly installed on the sleeper through the cooperation of fixing bolt I passing through the through hole and mounting hole III. The middle boss of the strip-shaped base body is fixedly installed on the mounting base plate through the cooperation of fixing bolt II with connecting hole I and mounting hole IV.

[0009] A further technical solution thereof is that the pressure sensors are symmetrically distributed and installed on both sides of the sleeper.

[0010] A further technical solution thereof is that the mounting base plate has an inverted boss structure.

[0011] Due to the adoption of the above technical solutions, a pressure sensor and a pressure detection device for ordinary sleeper installation of the present invention have the following beneficial effects:

[0012] 1. The pressure sensor of the present invention has a simple structure and ingenious design, and is suitable for installation on ordinary sleepers, enabling the installation of pressure sensors on ordinary sleepers, thereby realizing the extension of the detection interval length of track scales and overloading detectors and improving the detection accuracy. Among them, the middle part of the present pressure sensor is designed as a boss 12, and a through hole 13 is opened on the boss 12, greatly simplifying the structure of the mounting base plate 3 that cooperates with it. The mounting base plate 3 can be operatively installed and fixed on the sleeper 5 through the through hole 13, with fewer installation restrictions and convenient adjustment, making the installation of the pressure sensor more simple and efficient.

[0013] 2. The pressure sensor of the present invention has a symmetrical structure, balanced force, and good stability.

[0014] 3. The assembly method of the pressure detection device of the present invention is simple, greatly reducing the entire construction workload and having little interference with train operation.

[0015] 4. The two ends of the pressure sensor of the pressure detection device of the present invention are rigidly connected to the rail through the rail clip brackets 2, and are not sensitive to the vibration of the rail, with good stability. The middle part of the pressure sensor is fixedly installed on the sleeper through the mounting base plate 3, with a firm and stable foundation, which is beneficial to improving the detection accuracy and safety.

[0016] 5. It is convenient for use and maintenance.

[0017] The technical features of a pressure sensor and a pressure detection device for ordinary sleeper installation of the present invention will be further described below in conjunction with the drawings and embodiments. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a pressure sensor for ordinary sleeper installation in Embodiment 1;

[0019] Figure 2 It is a longitudinal sectional view of a pressure sensor for ordinary sleeper installation in Embodiment 1 Figure 1 ;

[0020] Figure 3 It is a longitudinal sectional view of a pressure sensor for ordinary sleeper installation in Embodiment 1 Figure 2 ;

[0021] Figure 4 It is a top view of a pressure sensor for ordinary sleeper installation in Embodiment 1;

[0022] Figure 5 It is a side view of a pressure sensor for ordinary sleeper installation in Embodiment 1;

[0023] Figure 6 It is a schematic assembly structure diagram of a pressure detection device for ordinary sleeper installation in Embodiment 2;

[0024] Figure 7 It is a top view of the assembly structure of a pressure detection device for ordinary sleeper installation in Embodiment 2;

[0025] Figure 8 is Figure 7 the sectional view of A-A in;

[0026] Figure 9 It is a side view of the assembly structure of a pressure detection device for ordinary sleeper installation in Embodiment 2.

[0027] In the figure:

[0028] 1 - pressure sensor, 11 - long strip-shaped base, 12 - boss, 13 - through hole, 14 - mounting hole Ⅰ, 15 - connecting hole Ⅰ, 16 - blind hole; 2 - rail buckle support; 3 - mounting base plate; 4 - rail; 5 - sleeper; 6 - connecting bolt; 7 - fixing bolt Ⅰ, 8 - fixing bolt Ⅱ, 9 - fixing bolt Ⅲ. Specific implementation mode Embodiment 1:

[0029] As Figures 1 to 5As shown in the figure, a pressure sensor for the installation of ordinary sleepers. The pressure sensor 1 includes a long strip-shaped base body 11, and the middle part of the long strip-shaped base body 11 bulges towards both sides to form a convex platform 12. For example, the convex platform in this Embodiment 1 is a rectangular body. A through hole 13 is opened at the center of the upper end surface of the convex platform 12, and mounting holes Ⅰ14 are also opened on the upper end surface of the convex platform 12. There are four mounting holes Ⅰ14 in this Embodiment 1, and the four mounting holes Ⅰ14 are evenly distributed around the central axis of the through hole 13, exactly located at the four corners of the rectangular body. Connecting holes Ⅰ15 are symmetrically arranged at both ends of the upper end surface of the long strip-shaped base body 11, and blind holes 16 are arranged on the long strip-shaped base body 11. The blind holes 16 are located on both sides of the convex platform 12 and are symmetrically arranged. A strain gauge is arranged in each blind hole 16.

[0030] This pressure sensor 1 has a symmetric structure, balanced force, and good stability. Embodiment 2:

[0031] As Figures 6 to 9 shown in the figure, a pressure detection device for the installation of ordinary sleepers includes the pressure sensor 1 described in Embodiment 1, and also includes a rail clip bracket 2 and a support frame 3. Both ends of the pressure sensor 1 are rigidly connected to the rail 4 through a pair of rail clip brackets 2, and the middle part of the pressure sensor 1 is fixedly installed on the sleeper 5 through a mounting base plate 3. The specific structure of this pressure detection device is as follows:

[0032] The pressure sensor 1 includes a long strip-shaped base body 11, and the middle part of the long strip-shaped base body 11 bulges towards both sides to form a convex platform 12. A through hole 13 is opened at the center of the upper end surface of the convex platform 12, which is convenient for fixing the mounting base plate on the sleeper. Mounting holes Ⅰ14 are also opened on the upper end surface of the convex platform 12, which are used to fix the sensor on the mounting base plate. Connecting holes Ⅰ15 are symmetrically arranged at both ends of the upper end surface of the long strip-shaped base body 11. Two blind holes 16 are coaxially arranged on the front surface facing the rail and the rear surface facing away from the rail of the long strip-shaped base body 11. The blind holes 16 on the same side are located on both sides of the convex platform 12 and are symmetrically arranged. A strain gauge is arranged in each blind hole 16.

[0033] In this Embodiment 2, the rail clip bracket 2 is square-shaped, and the rail clip bracket 2 is provided with an inner groove, a connecting hole Ⅱ, and a mounting hole Ⅱ (not marked in the figure) for installing the pressure sensor 1. The size of the inner groove fits the lower convex edge of the cross-section of the rail 4. The mounting base plate 3 is of an inverted convex platform structure. The mounting base plate 3 is provided with a mounting hole Ⅲ (not marked in the figure) for connecting with the sleeper 5 and a mounting hole Ⅳ (not marked in the figure) for installing the pressure sensor 1. The through hole 13 on the convex platform 12 is a circular through hole, and its aperture is larger than the aperture of the mounting hole Ⅲ, which is convenient for the mounting base plate 3 to be operatively installed and fixed on the sleeper 5 through the through hole 13.

[0034] In the assembled state, a set of pressure sensors 1 need to be installed on the inner and outer sides of the two rails on the same sleeper in each measuring area, that is, the pressure sensors 1 are symmetrically distributed and installed on both sides of the sleeper. During installation, with the center line of the sleeper as the center, two rail buckle brackets 2 that form a pair are respectively located on the inner and outer sides of the rail, centered and buckled against the lower edge of the rail 4, and connecting bolts 6 are inserted through the connection holes and tightened to fix the rail buckle brackets 2 on the rail 4; both ends of the long strip-shaped base body 11 of the pressure sensor 1 are fixedly installed on the rail buckle brackets 2 through the cooperation of fixing bolts III 9 with connection holes I 15 and mounting holes II; the two rail buckle brackets 2 on the same side of the rail are connected by the pressure sensor 1; the mounting holes III of the mounting base plate 3 are located below the through holes 13 opened on the convex platform, and the mounting base plate 3 is fixedly installed on the sleeper 5 through the cooperation of fixing bolts I 7 passing through the through holes 13 and the mounting holes III; the middle convex platform 12 of the long strip-shaped base body 11 is fixedly installed on the mounting base plate 3 through the cooperation of fixing bolts II 8 with connection holes I 14 and mounting holes IV.

[0035] In this Embodiment 2, there is a micro-distance suspension between the bottom surface of the rail in the measuring area and the rail supporting surface, leaving a deformation space for the downward swing of the rail. When the wheel passes by, the deformation of the rail drives the rail buckle bracket 4 to move downward, and the front and rear ends of the pressure sensor 1 are connected to the rail buckle bracket 4 and move along with it, while the middle part is connected to the sleeper and is relatively stationary. The dislocation difference drives the deformation of the pressure sensor 1, so that the sensor is stressed and generates a signal.

[0036] This pressure sensor and pressure detection device for the installation of ordinary sleepers can be widely applied to railway weighing occasions such as overloading and offloading detection devices and rail scales for railway freight cars, and does not affect the safety of train operation. There is no need to install special sleepers, achieving the purpose of saving construction time and construction costs.

[0037] The parts not involved in the present invention are the same as or can be implemented by the prior art. The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to the records of the above embodiments. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should all be regarded as belonging to the patent protection scope determined by the claims submitted by the present invention.

Claims

1. A pressure sensor for ordinary sleeper installation, characterized in that: The pressure sensor includes a long strip substrate, the middle part of which protrudes to both sides to form a boss; a through hole is opened in the center of the upper end surface of the boss; a mounting hole I is also opened on the upper end surface of the boss; connecting holes I are respectively provided at both ends of the upper end surface of the long strip substrate; blind holes are provided on the long strip substrate, and the blind holes are located on both sides of the boss and are symmetrically arranged; a strain gauge is arranged in each blind hole.

2. A pressure sensor for installation on ordinary sleepers according to claim 1, characterized in that: There are four mounting holes I, which are evenly distributed around the central axis of the through hole.

3. A pressure detection device for ordinary sleeper installation, characterized in that: It comprises the pressure sensor, rail buckle bracket and mounting base plate as described in claim 1; the two ends of the pressure sensor are rigidly connected to the rails through a pair of rail buckle brackets, and the middle part of the pressure sensor is fixedly mounted on the sleeper through the mounting base plate.

4. A pressure detection device for ordinary sleeper installation according to claim 3, characterized in that: The rail buckle bracket is in a square shape, and is provided with an inner groove, a connecting hole, and a mounting hole II for installing a pressure sensor, and the size of the inner groove matches the lower convex edge of the rail cross section; the mounting bottom plate is provided with a mounting hole III connected to the sleeper, and a mounting hole IV for installing a pressure sensor; In the assembled state, a pair of rail buckle brackets are respectively located on the inner and outer sides of the rail and are centered and buckled on the lower edge of the rail. Connecting bolts are passed through the connecting holes and tightened to fix the rail buckle brackets on the rail. The two ends of the elongated substrate of the pressure sensor are respectively fixedly mounted on the rail buckle bracket by the cooperation of fixing bolts III with connecting holes I and mounting holes II. The mounting hole III of the mounting base plate is located below the through hole opened on the boss, and the mounting base plate is fixedly mounted on the sleeper by the cooperation of fixing bolts I passing through the through hole and mounting hole III. The middle boss of the elongated substrate is fixedly mounted on the mounting base plate by the cooperation of fixing bolts II with mounting holes I and mounting holes IV.

5. A pressure detection device for ordinary sleeper installation according to claim 4, characterized in that: The pressure sensors are symmetrically installed on both sides of the sleeper.

6. A pressure detection device for installing ordinary sleepers according to claim 4, characterized in that: The installation base plate is an inverted boss structure.

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