Track clamping type force sensor integrated fixture

Abstract

The utility model provides a clamping rail type force sensor integrated fixture which comprises a first fixture and a second fixture. The first clamp and the second clamp are detachably connected and are fixed on the outer side wall of the steel rail; a mounting hole is formed in the first clamp, and a transverse force sensing assembly is movably mounted in the mounting hole; a balance pressing plate is arranged between the transverse force sensing assembly and the steel rail to be detected. The balance pressing plate is relatively clamped through the first clamp and the second clamp and is pressed on the outer side wall of the steel rail by the transverse force sensing assembly; the balance pressing plate and the transverse force sensor assembly are fixed through a balance shaft. Shearing force sensors are respectively mounted at two ends of the balance pressing plate; according to the utility model, the measurement of transverse force and vertical force is simultaneously realized by using one set of device, the original shear force sensor and two-dimensional force sensor are replaced, a special sleeper does not need to be replaced, and the construction period is shortened; and compared with the scheme that each sensor independently uses a set of fixture at present, the number of used fixtures is effectively reduced, and the installation workload is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the wheel rail force detection field especially relates to a rail clamping type force sensor integrated fixture. BACKGROUND

[0002] In the solid guarantee system of railway safe transportation, the vehicle operation quality trackside dynamic monitoring system (TPDS for short) has been fully spread in the railway trunk network of China, and its core is to realize uninterrupted monitoring and analysis of the transverse and vertical wheel rail force of passing trains through the precise layout of sensor array; The application of this innovative technology not only greatly improves the real-time evaluation ability of the vehicle operation state, but also successfully enables the intelligent identification of wheel tread damage and the accurate detection of overloading, and builds a solid defense line for the safety and efficiency of railway transportation.

[0003] As of the end of 2022, the number of TPDS devices deployed nationwide has reached 168, which marks a milestone in the intelligent level of railway operation and maintenance in China; The wide application of these devices not only significantly optimizes the running state of the vehicle, greatly reduces the accident rate, but also brings considerable economic benefits to railway operation by reducing unnecessary freight car maintenance needs, and injects strong impetus for the sustainable development of the railway industry.

[0004] However, in the process of continuous optimization and upgrading of the TPDS system, the challenges faced by the existing sensor configuration cannot be ignored; At present, the main dependence in the measurement area is the two-dimensional force plate sensor and the rail clamping shear force sensor, among which the two-dimensional force plate sensor undertakes the dual measurement task of vertical and horizontal wheel rail force; However, its installation process is complex, and it needs to be replaced with special sleepers to replace existing facilities, which not only has heavy construction workload and long cycle, but also causes certain interference to railway operation; In addition, the two-dimensional force sensor needs to be deeply buried under the steel rail, which puts forward strict requirements on material strength and compatibility, resulting in large size and considerable weight, further aggravating the installation and transportation difficulties, and increasing the construction cost and time cost. UTILITY MODEL CONTENT

[0005] In order to solve the problem of lack of more efficient and convenient sensor integration scheme in the prior art to simplify the installation process, shorten the construction period and reduce the operation and maintenance cost, the utility model provides a rail clamping type force sensor integrated fixture;

[0006] The rail clamping type force sensor integrated fixture provided by the utility model adopts the following technical scheme:

[0007] The utility model provides a rail type force sensor integrated fixture, including first fixture, second fixture, the first fixture and second fixture are detachably connected, are fixed in the lateral wall of steel rail, the inside of first fixture is opened and is equipped with the installation hole, the inside movable mounting of this installation hole is equipped with transverse force sensor assembly, the transverse force sensor assembly with the steel rail to be detected between is equipped with the balance pressing plate, the balance pressing plate is through the first fixture and the second fixture opposite clamping is pressed tightly with the lateral wall of steel rail by transverse force sensor assembly, the balance pressing plate with transverse force sensor assembly between is fixed through the balance shaft, the both ends of balance pressing plate are equipped with shear force sensor respectively,

[0008] Further, the first fixture is internally provided with a through hole; the second fixture is internally provided with a threaded hole; the first fixture is connected to the threaded hole of the second fixture through a locking bolt passing through the through hole, for clamping the steel rail to be detected;

[0009] Further, the transverse force sensor assembly comprises a connecting shaft, a pressure sensor and a fixing shaft; the first fixture is internally provided with a threaded hole, and the fixing shaft is threadedly installed in the threaded hole; the fixing shaft is divided into two parts, comprising a threaded part and a disassembling part, and the disassembling part is a square head structure extending to the outside of the threaded hole; one end of the pressure sensor is fixedly installed on the side of the fixing shaft close to the steel rail; one end of the connecting shaft is fixedly installed on the other end of the pressure sensor;

[0010] Further, the balance pressing plate is in an arcuate structure; the balance pressing plate is internally provided with mounting holes at both ends; the shear force sensor is movably installed in the mounting holes;

[0011] Further, the side of the balance pressing plate away from the steel rail is internally provided with a balance groove; the other end of the connecting shaft is provided with a balance shaft; the outer lateral wall of the balance shaft is internally provided with a connecting hole; the balance shaft is inserted into the connecting shaft through the connecting hole;

[0012] Further, the balance groove is in a circular arc surface structure; the side of the balance shaft close to the balance pressing plate is in a circular arc surface structure matched with the balance groove; the balance shaft is press-fitted in the balance groove through the connecting shaft.

[0013] In summary, the utility model has the advantages that:

[0014] The utility model discloses a set of device is used to realize the measurement of transverse force and vertical force simultaneously, replace the original shear force sensor and two-dimensional force sensor, need not to change special sleeper, reduce the construction quantity, shorten the construction period, compared with the scheme that each sensor uses a set of fixture alone, effectively reduce the use number of fixture, reduce the installation workload. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic plan view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of the balance pressure plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the balance shaft of this utility model;

[0019] Figure 5 This is a schematic diagram of the lateral force sensing component of this utility model.

[0020] As shown in the figure: 1-locking bolt, 2-first clamp, 3-lateral force sensing component, 31-connecting shaft, 32-pressure sensor, 33-fixed shaft, 4-balance plate, 47-balance groove, 5-balance shaft, 51-connecting hole, 6-second clamp, 7-shear force sensor. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-5 The present invention will be further described in detail below:

[0022] This utility model discloses a rail-mounted force sensor integrated clamp, such as... Figure 1 , Figure 2 As shown, a rail-mounted force sensor integrated clamp includes a first clamp 2 and a second clamp 6. The first clamp 2 and the second clamp 6 are detachably connected and fixed to the outer wall of the rail. The first clamp 2 has an installation hole inside, and a lateral force sensing component 3 is movably installed inside the installation hole. A balance plate 4 is provided between the lateral force sensing component 3 and the rail to be tested. The balance plate 4 is clamped relative to the first clamp 2 and the second clamp 6 and pressed against the outer wall of the rail by the lateral force sensing component 3. The balance plate 4 and the lateral force sensor component 3 are fixed by a balance shaft 5. Shear force sensors 7 are respectively installed at both ends of the balance plate 4. In this embodiment, after the entire clamp system is installed and fixed on the rail, the lateral force sensing component 3 is responsible for detecting the change of lateral force on the rail. Meanwhile, the shear force sensor 7 accurately detects the shear force of the rail through the action of the balance plate 4 and the balance shaft 5. When the rail is subjected to wheel-rail force, whether in the lateral or vertical direction, the corresponding sensor will convert the force signal into a measurable signal, which will then be analyzed and evaluated by the data processing system. This achieves the simultaneous measurement of lateral and vertical forces with a single measuring device, replacing the original shear force sensor and two-dimensional force sensor. It eliminates the need to replace dedicated sleepers, reduces construction work, and shortens the construction cycle. Compared with the current scheme where each sensor uses a separate set of clamps, this reduces the number of clamps used and lowers the installation workload.

[0023] likeFigure 1 、 Figure 2 As shown in the first clamp 2, the interior is provided with a through hole; the interior of the second clamp 6 is provided with a threaded hole; the first clamp 2 is connected with the threaded hole of the second clamp 6 through the through hole and the locking bolt 1, used for clamping the steel rail to be detected; in this embodiment, the first clamp 2 and the second clamp 6 are detachably connected through the locking bolt 1; so that the whole device is very flexible when installing, maintaining and replacing; the through hole on the first clamp 2 and the threaded hole on the second clamp 6 are opposite, and the locking bolt 1 is tightened to realize the close connection of the two clamps, and then firmly fixed on the outer side wall of the steel rail;

[0024] As shown in the first clamp 2, the interior is provided with a through hole; the interior of the second clamp 6 is provided with a threaded hole; the first clamp 2 is connected with the threaded hole of the second clamp 6 through the through hole and the locking bolt 1, used for clamping the steel rail to be detected; in this embodiment, the first clamp 2 and the second clamp 6 are detachably connected through the locking bolt 1; so that the whole device is very flexible when installing, maintaining and replacing; the through hole on the first clamp 2 and the threaded hole on the second clamp 6 are opposite, and the locking bolt 1 is tightened to realize the close connection of the two clamps, and then firmly fixed on the outer side wall of the steel rail; Figure 2 、 Figure 3 As shown in the first clamp 2, the interior is provided with a through hole; the interior of the second clamp 6 is provided with a threaded hole; the first clamp 2 is connected with the threaded hole of the second clamp 6 through the through hole and the locking bolt 1, used for clamping the steel rail to be detected; in this embodiment, the first clamp 2 and the second clamp 6 are detachably connected through the locking bolt 1; so that the whole device is very flexible when installing, maintaining and replacing; the through hole on the first clamp 2 and the threaded hole on the second clamp 6 are opposite, and the locking bolt 1 is tightened to realize the close connection of the two clamps, and then firmly fixed on the outer side wall of the steel rail;

[0025] As shown in the first clamp 2, the interior is provided with a through hole; the interior of the second clamp 6 is provided with a threaded hole; the first clamp 2 is connected with the threaded hole of the second clamp 6 through the through hole and the locking bolt 1, used for clamping the steel rail to be detected; in this embodiment, the first clamp 2 and the second clamp 6 are detachably connected through the locking bolt 1; so that the whole device is very flexible when installing, maintaining and replacing; the through hole on the first clamp 2 and the threaded hole on the second clamp 6 are opposite, and the locking bolt 1 is tightened to realize the close connection of the two clamps, and then firmly fixed on the outer side wall of the steel rail; Figure 3 、 Figure 4 As shown in the first clamp 2, the interior is provided with a through hole; the interior of the second clamp 6 is provided with a threaded hole; the first clamp 2 is connected with the threaded hole of the second clamp 6 through the through hole and the locking bolt 1, used for clamping the steel rail to be detected; in this embodiment, the first clamp 2 and the second clamp 6 are detachably connected through the locking bolt 1; so that the whole device is very flexible when installing, maintaining and replacing; the through hole on the first clamp 2 and the threaded hole on the second clamp 6 are opposite, and the locking bolt 1 is tightened to realize the close connection of the two clamps, and then firmly fixed on the outer side wall of the steel rail;

[0026] As shown in the first clamp 2, the interior is provided with a through hole; the interior of the second clamp 6 is provided with a threaded hole; the first clamp 2 is connected with the threaded hole of the second clamp 6 through the through hole and the locking bolt 1, used for clamping the steel rail to be detected; in this embodiment, the first clamp 2 and the second clamp 6 are detachably connected through the locking bolt 1; so that the whole device is very flexible when installing, maintaining and replacing; the through hole on the first clamp 2 and the threaded hole on the second clamp 6 are opposite, and the locking bolt 1 is tightened to realize the close connection of the two clamps, and then firmly fixed on the outer side wall of the steel rail; Figure 4 、 Figure 5As shown, a balance groove 47 is provided on the side of the balance plate 4 away from the rail; a balance shaft 5 is provided at the other end of the connecting shaft 31; a connecting hole 51 is provided on the outer side wall of the balance shaft 5; the balance shaft 5 is inserted into the connecting shaft 31 through the connecting hole 51; the groove of the balance groove 47 is an arc surface structure; the side of the balance shaft 5 near the balance plate 4 is an arc surface structure that matches the balance groove 47; the balance shaft 5 is press-fitted into the balance groove 47 through the connecting shaft 31. In this embodiment, a balance shaft 5 is provided at the other end of the connecting shaft 31, and the balance shaft 5 is inserted into the connecting shaft 31 through the connecting hole 51 on its outer side wall; this allows the balance shaft 5 to flexibly connect with the connecting shaft 31 and be fixed on the balance plate 4 through the balance groove 47; the arc surface structure of the balance groove 47 matches the arc surface of the balance shaft 5, ensuring the tightness and stability of the insertion.

[0027] Because the balance shaft 5 and the balance pressure plate 4 adopt a cylindrical fit design, when the shear force sensors 7 at both ends are subjected to uneven forces, they will rotate relative to each other, thereby automatically balancing the load at both ends; this ensures that even under uneven force conditions, the shear force sensors 7 at both ends can maintain the same pressure, improving the accuracy of the measurement.

[0028] The implementation principle of this utility model embodiment is as follows:

[0029] Vertical force measurement:

[0030] When the pressure sensor 32 is tightened, the load is transmitted evenly to the shear force sensors 7 on both sides through the pressure sensor 32, the balance shaft 5, and the balance plate 4. At this time, the shear force sensor 7, as an elastic element, reflects the magnitude of the vertical force through its deformation. The vertical force value can be indirectly calculated through the measurement of the pressure sensor 32.

[0031] Lateral force measurement:

[0032] When the rail is deformed by the lateral wheel-rail force, the deformation load first acts on the shear force sensor 7, and then is transmitted in sequence through the balance plate 4, balance shaft 5, and pressure sensor 32. During this process, the pressure sensor 32 will collect the deformation signal caused by the lateral force and convert it into an electrical signal output, thereby realizing the measurement of the lateral force.

[0033] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The various components mentioned in the utility model are common technology in the prior art, which should be understood by the skilled person in the industry. The utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rail-mounted force sensor integrated fixture, characterized in that, The device includes a first clamp (2) and a second clamp (6); the first clamp (2) and the second clamp (6) are detachably connected and fixed to the outer wall of the rail; the first clamp (2) has an installation hole inside, and a lateral force sensing component (3) is movably installed inside the installation hole; a balance plate (4) is provided between the lateral force sensing component (3) and the rail to be tested; the balance plate (4) is clamped relative to the first clamp (2) and the second clamp (6) and pressed against the outer wall of the rail by the lateral force sensing component (3); the balance plate (4) and the lateral force sensor component (3) are fixed by a balance shaft (5); shear force sensors (7) are respectively installed at both ends of the balance plate (4).

2. A rail-mounted force sensor integrated fixture according to claim 1, characterized in that... The first clamp (2) has a through hole inside; the second clamp (6) has a threaded hole inside; the first clamp (2) is connected to the threaded hole of the second clamp (6) through the through hole by a locking bolt (1) to clamp the rail to be inspected.

3. A rail-mounted force sensor integrated fixture according to claim 1, characterized in that... The lateral force sensing assembly (3) includes a connecting shaft (31), a pressure sensor (32), and a fixed shaft (33); the first clamp (2) has a threaded hole inside, and the fixed shaft (33) is installed in the threaded hole by thread; the fixed shaft (33) is divided into two parts, including a threaded part and a disassembly part, the disassembly being a square head structure extending to the outside of the threaded hole; one end of the pressure sensor (32) is fixedly installed on the side of the fixed shaft (33) near the rail; one end of the connecting shaft (31) is fixedly installed on the other end of the pressure sensor (32).

4. A rail-mounted force sensor integrated fixture according to claim 3, characterized in that... The balancing pressure plate (4) has an arched structure; mounting holes are provided at both ends of the balancing pressure plate (4); the shear force sensor (7) is installed in the mounting hole by bolts.

5. A rail-mounted force sensor integrated fixture according to claim 4, characterized in that... The balance plate (4) has a balance groove (47) on the side away from the rail; the other end of the connecting shaft (31) is provided with a balance shaft (5); the outer wall of the balance shaft (5) is provided with a connecting hole (51); the balance shaft (5) is inserted into the connecting shaft (31) through the connecting hole (51).

6. A rail-mounted force sensor integrated fixture according to claim 5, characterized in that... The balancing groove (47) has a circular arc surface structure; the side of the balancing shaft (5) near the balancing pressure plate (4) has a circular arc surface structure that matches the balancing groove (47); the balancing shaft (5) is press-fitted into the balancing groove (47) through the connecting shaft (31).

Images