Fatigue test equipment for hanging piece of bridge inspection vehicle

Abstract

The invention provides bridge inspection vehicle hanging piece fatigue test equipment, the fatigue test equipment comprises a base, a motor and a vibration assembly, a hanging piece is fixedly arranged on the top surface of the base, and the motor is also fixedly arranged on the top of the base and is adjacent to the hanging piece. The vibration assembly is connected with the top of the hanging piece, the vibration assembly is further connected with the output end of the motor, and the vibration assembly is driven by the motor to move in a reciprocating mode and applies reciprocating torque to the hanging piece. The fatigue test equipment is simple in structure and convenient to operate, the eccentric wheel is driven to rotate through the speed reducer at the output end of the motor, the eccentric wheel transmits horizontal deviation generated by rotation to the follower plate, then the follower plate applies horizontal torque to the hanging piece, and the purpose of testing the fatigue strength of the hanging piece in the horizontal direction is achieved. The testing process is simple and efficient, the testing result is visual and reliable, the fatigue performance test of the bridge inspection vehicle hanging piece can be effectively and conveniently completed, and then the safety of the inspection vehicle during operation is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of bridge inspection vehicles, in particular to fatigue testing equipment for pendants of bridge inspection vehicles. Background Art

[0002] Bridge construction is a crucial infrastructure project. Its safe construction and routine safety inspections are crucial, impacting the lifespan and safety of bridges. Therefore, after construction is complete, bridge inspections are a crucial part of daily operation. With technological advancements, bridge inspection methods are evolving to meet increasing safety requirements, ensuring the stability of bridge structures.

[0003] At present, bridge inspection vehicles have become an indispensable ancillary facility in bridge construction, and inspectors can conduct comprehensive and detailed inspections of bridges on bridge inspection vehicles. Therefore, during the inspection process, ensuring the safe operation of bridge inspection vehicles becomes a top priority. During the operation of the inspection vehicle, it is necessary to run on a track (pendant) along the direction of the bridge. In order to ensure the safety of the inspection vehicle during operation, the safety performance of the pendant needs to be tested before installing the pendant to reduce the safety degradation caused by production problems during the use of the pendant, which in turn leads to failures. However, there is no device in the prior art for special safety testing of the pendant, so that unqualified pendants may be used, which in turn leads to failures and greatly reduces safety.

[0004] Therefore, the technology in this field urgently needs a fatigue testing equipment that is easy to operate, has intuitive and reliable test results, and has low production costs. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a bridge inspection vehicle pendant fatigue test equipment to solve the problems in the existing technology that it is difficult to test the fatigue strength of the pendant before use, the use risk is high, and the safety of the bridge inspection process cannot be ensured.

[0006] The present invention provides a fatigue test device for a bridge inspection vehicle pendant, which includes: a base, a motor and a vibration assembly, wherein a pendant is fixedly provided on the top surface of the base, and the motor is also fixedly provided on the top of the base, adjacent to the pendant; the vibration assembly is connected to the top of the pendant, and the vibration assembly is also connected to the output end of the motor, and the vibration assembly performs reciprocating motion under the drive of the motor and applies a reciprocating torque to the pendant.

[0007] Furthermore, the vibration assembly includes: an eccentric wheel and a follower plate, wherein the two follower plates are arranged in parallel and fixedly connected to the top of the pendant at one end; the eccentric wheel is connected to the output end of the motor and is placed between the two follower plates, used to drive the follower plates to reciprocate in the horizontal direction.

[0008] Furthermore, the output end of the motor is drivingly connected to a reducer, and the output shaft of the reducer is fixedly connected to the eccentric wheel to drive the eccentric wheel to rotate.

[0009] Furthermore, the reducer has two output shafts, and both of the output shafts are connected to the eccentric wheel.

[0010] Furthermore, the two output shafts are located on both sides of the reducer body, and their axial directions are parallel to the length extension direction of the base plate; and a hanger to be tested is fixedly provided on the top surface of the base plate on both sides of the reducer.

[0011] In an embodiment of the present invention, a fixing seat is provided on the top surface of the base, and the reducer is fixedly connected to the top of the fixing seat.

[0012] In an embodiment of the present invention, the cross-section of the hanger is an "I" shape, and the hanger includes a fixed plate, a suspension plate and a connecting plate, wherein the connecting plate is arranged between the fixed plate and the suspension plate, and is perpendicular to the fixed plate and the suspension plate; the fixed plate is fixed on the top surface of the base plate; the offset direction of the eccentric wheel is perpendicular to the extension direction of the connecting plate; the two follower plates are vertically fixed to the top surface of the suspension plate, and are symmetrically arranged relative to the connecting plate.

[0013] According to the above embodiment, the fatigue testing equipment for bridge inspection vehicle hangers provided by the present invention has at least the following benefits: the fatigue testing equipment has a simple structure and is easy to operate. The reducer at the output end of the motor drives the eccentric wheel to rotate. The eccentric wheel transmits the horizontal offset generated by the rotation to the follower plate, driving the follower plate to move back and forth in the horizontal direction, thereby allowing the follower plate to apply a horizontal torque to the hanger. The hanger is subjected to the horizontal reciprocating torque, and thus can be subjected to a horizontal fatigue strength test. The testing process is simple and efficient, and the test results are intuitive and reliable. It can effectively and conveniently complete the fatigue performance test of the bridge inspection vehicle hanger, thereby ensuring the safety of the inspection vehicle during operation.

[0014] It should be understood that the foregoing general description and the following detailed description are merely exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are a part of the specification of the present invention and illustrate exemplary embodiments of the present invention. Together with the description, the drawings serve to explain the principles of the present invention.

[0016] Figure 1 This is a structural diagram of the implementation status of a bridge inspection vehicle pendant fatigue test equipment provided by the present invention.

[0017] Description of reference numerals:

[0018] 1-base, 2-pendant, 3-motor, 4-vibration assembly, 5-reducer, 6-fixed seat;

[0019] 41- eccentric wheel, 42- follower plate;

[0020] 51-Output shaft. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0022] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from the present invention. The present description and examples are intended to be illustrative only.

[0023] In practice, multiple hangers 2 are evenly installed on a bridge, allowing a bridge inspection vehicle to move along a path formed by the hangers 2, allowing inspection personnel to safely and quickly reach their work locations for bridge inspection or maintenance. However, before installing the hangers 2, the performance of the hangers 2 must be determined. Therefore, fatigue testing is performed on the installed hangers 2 through random inspections to determine their fatigue strength and structural performance.

[0024] The present invention provides a fatigue test device for bridge inspection vehicle pendant, such as Figure 1 The figure shows the structure of the fatigue test equipment in an application implementation. Specifically, the fatigue test equipment includes a base 1, a motor 3, and a vibration assembly 4. A pendant 2 is fixedly mounted on the top surface of the base 1, and the motor 3 is also fixedly mounted on the top of the base 1, adjacent to the pendant 2.

[0025] Vibration assembly 4 is connected to the top of pendant 2 and the output of motor 3. Driven by motor 3, vibration assembly 4 reciprocates, applying a reciprocating torque to pendant 2. This reciprocating torque allows for fatigue testing of pendant 2's structural strength. During the test, the test time and reciprocating frequency are recorded, and compliance with design safety standards is determined based on design specifications, completing the fatigue performance test of the vehicle pendant.

[0026] In a specific embodiment of the present invention, the vibration assembly 4 includes an eccentric wheel 41 and a follower plate 42. The two follower plates 42 are arranged in parallel and fixedly connected to the top of the one end hanger 2.

[0027] The eccentric wheel 41 is connected to the output end of the motor 3 and is placed between the two follower plates 42 to drive the follower plates 42 to move back and forth in the horizontal direction, thereby applying a reciprocating torque to the hanger 2 through the follower plates 42, thereby being able to perform fatigue testing on the hanger 2.

[0028] Furthermore, the output end of the motor 3 is drivingly connected to the reducer 5 , and the output shaft of the reducer 5 is fixedly connected to the eccentric wheel 41 to drive the eccentric wheel 41 to rotate.

[0029] Furthermore, the reducer 5 has two output shafts 51 , and both output shafts 51 are connected to an eccentric wheel 41 , so as to test two groups of hangers 2 simultaneously, thereby improving the testing efficiency.

[0030] Furthermore, two output shafts 51 are located on either side of the main body of the reducer 5, with their axial directions parallel to the lengthwise extension of the base plate 1. A pendant 2 to be tested is fixedly mounted on the top surface of the base plate 1, on either side of the reducer 5. In this embodiment, the base plate 1 is a rectangular plate to minimize floor space. The two pendants 2 to be tested and the reducer 5 are arranged along the lengthwise direction of the base plate 1, saving installation space.

[0031] In a specific embodiment of the present invention, a fixing seat 6 is provided on the top surface of the base 1, and the reducer 5 is fixedly connected to the top of the fixing seat 6. The fixing seat 6 plays a role in stably installing the reducer 5 and the motor 3. At the same time, it can allow the output shaft 51 of the reducer 5 to be located above the hanger 2, which is convenient for installing the eccentric wheel 41 and the follower plate 42 for fatigue testing.

[0032] In a specific embodiment of the present invention, the hanger 2 has an I-shaped cross-section and comprises a fixed plate, a suspension plate, and a connecting plate. The connecting plate is positioned between the fixed and suspension plates, and perpendicular to both. In this embodiment, the fixed plate of the hanger 2 is used for fixed installation on the bridge, while the suspension plate is used to suspend and connect a bridge inspection vehicle. The vehicle can simultaneously connect to multiple adjacent hangers 2 and move along the direction of the hangers 2.

[0033] In this embodiment, when the hanger 2 is tested, the fixing plate is fixed to the top surface of the base plate 1 to prevent movement during the test, thereby preventing the hanger 2 from affecting the test results.

[0034] The eccentric wheel 41 deflects perpendicularly to the direction of extension of the connecting plate. Specifically, from the perspective of the structure of the hanger 2, the connecting plate extends longitudinally, while the eccentric wheel 41 deflects transversely. Two follower plates 42 are fixed perpendicularly to the top surface of the suspension plate and are symmetrically arranged relative to the connecting plate. The eccentric wheel pushes the follower plates 42 on either side transversely of the hanger 2, thereby applying a transverse torque to the hanger 2 through the follower plates 42.

[0035] The above description is merely an illustrative embodiment of the present invention. Without departing from the concept and principle of the present invention, any equivalent changes and modifications made by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A fatigue test equipment for bridge inspection vehicle pendant, characterized in that: The fatigue test equipment comprises: a base (1), a motor (3) and a vibration component (4), wherein A hanging piece (2) is fixedly provided on the top surface of the base (1), and the motor (3) is also fixedly provided on the top of the base (1) and is arranged adjacent to the hanging piece (2); The vibration component (4) is connected to the top of the pendant (2), and the vibration component (4) is also connected to the output end of the motor (3). Driven by the motor (3), the vibration component (4) performs reciprocating motion and applies a reciprocating torque to the pendant (2).

2. The fatigue testing equipment for bridge inspection vehicle pendant according to claim 1, characterized in that: The vibration assembly (4) comprises an eccentric wheel (41) and a follower plate (42), wherein The two follower plates (42) are arranged in parallel and fixedly connected to the top of the hanger (2) at one end; The eccentric wheel (41) is connected to the output end of the motor (3) and is placed between the two follower plates (42) to drive the follower plates (42) to reciprocate in the horizontal direction.

3. The fatigue testing equipment for bridge inspection vehicle pendant according to claim 2, characterized in that: The output end of the motor (3) is drivingly connected to a reducer (5), and the output shaft of the reducer (5) is fixedly connected to the eccentric wheel (41) to drive the eccentric wheel (41) to rotate.

4. The fatigue testing equipment for bridge inspection vehicle pendant according to claim 3, characterized in that: The reducer (5) has two output shafts (51), and both of the output shafts (51) are connected to the eccentric wheel (41).

5. The fatigue testing equipment for bridge inspection vehicle pendant according to claim 4, characterized in that: The two output shafts (51) are located on both sides of the reducer (5) body, and their axial directions are parallel to the length extension direction of the base plate (1); A hanger (2) to be tested is fixedly provided on the top surface of the bottom plate (1) on both sides of the reducer (5).

6. The fatigue testing equipment for bridge inspection vehicle pendant according to claim 3 or 4, characterized in that: A fixing seat (6) is provided on the top surface of the base (1), and the reducer (5) is fixedly connected to the top of the fixing seat (6).

7. The fatigue testing equipment for bridge inspection vehicle pendant according to claim 2, characterized in that: The cross section of the hanging part (2) is an "I" shape, and the hanging part (2) comprises a fixing plate, a hanging plate and a connecting plate, wherein The connecting plate is arranged between the fixing plate and the hanging plate, and is perpendicular to the fixing plate and the hanging plate; The fixing plate is fixed on the top surface of the bottom plate (1); The offset direction of the eccentric wheel (41) is perpendicular to the extension direction of the connecting plate; The two follower plates (42) are vertically fixed to the top surface of the suspension plate and are symmetrically arranged relative to the connecting plate.

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