Bridge member fatigue performance testing device

Abstract

The utility model relates to the technical field of bridge accessories, in particular to a bridge component fatigue performance testing device which comprises a base, a supporting rod is fixedly arranged at one end of the top of the base, the other end of the supporting rod is fixedly arranged at one end of the bottom of a connecting plate, and the inner wall of one side of the middle of the connecting plate is in threaded insertion connection with the middle outer surface of a threaded rod. A sliding rod is fixedly arranged on one side of the top of the pressing frame, the inner wall of one side of the middle of a connecting ring is slidably arranged on the outer surface of the middle of the sliding rod, and a push rod is fixedly arranged on one side of the bottom of the connecting ring through a fixing rod. By rotating the crank at one end of the threaded rod, the threaded rod can drive the lower pressing frame to move downwards through the connecting plate, so that the pressing rod of the lower pressing frame is pressed on the bridge component to fix the bridge component, the bridge component can be effectively fixed, shaking during fatigue detection is avoided, and the fatigue detection accuracy is improved. The accuracy of a fatigue detection result is improved, and detection errors are avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bridge accessories, in particular to a bridge component fatigue performance testing device. BACKGROUND

[0002] Bridge components are divided into upper structure components and lower structure components, the upper components include main beams, bridge deck slabs, cross beams, longitudinal beams, supports and expansion joints, and the lower structure components include piers, abutments, foundations, tie beams and bent caps; with the rapid development of highway traffic, traffic volume, vehicle weight and vehicle speed are continuously increasing, overloading is increasingly prominent, and the problem of bridge resistance degradation is difficult to avoid, so the cumulative fatigue damage caused thereby cannot be ignored.

[0003] Through retrieval, the patent with the publication number CN221745971U discloses a bridge component fatigue performance testing device, which comprises a climate simulation box and a testing mechanism for fatigue testing, the testing mechanism comprises: a mounting seat for fixing a bridge sample; a fixing frame arranged on the mounting seat; a measuring vehicle slidably arranged on the fixing frame; an adjusting assembly for adjusting the pressure value of the measuring vehicle on the bridge sample; and a driving assembly for driving the measuring vehicle to reciprocate.

[0004] With regard to the related technologies in the above, the inventors have found that the current bridge component fatigue performance testing device is inconvenient to use and has poor adaptability; when fatigue performance of bridge components of different sizes is detected, a plurality of specifications of fixing devices need to be used, which reduces the use effect of the bridge component fatigue performance testing, cannot effectively fix the bridge components, is prone to loosening during testing, causes errors in testing, affects the safety of later bridge construction, and is prone to causing damage to the bridge components during carrying. Practical new type content

[0005] In order to solve the problems mentioned in the background art, the application provides a bridge component fatigue performance testing device.

[0006] The bridge component fatigue performance testing device provided by the application adopts the technical scheme as follows: comprising a base, a support rod is fixedly arranged at one end of the top of the base, one end of the bottom of a connecting plate is fixedly arranged at the other end of the support rod, a threaded rod is threadedly inserted into the outer surface of the middle part of the connecting plate, a pressing frame is rotatably arranged at one end of the threaded rod, a slide rod is fixedly arranged at one side of the top of the pressing frame, a connecting ring is slidably arranged on the inner wall of one side of the middle part of the slide rod, and a push rod is fixedly arranged on the inner wall of one side of the bottom of the connecting ring through a fixing rod.

[0007] A second limiting rod is slidably arranged on the inner wall of one side of the middle part of the base, a push plate is fixedly arranged at one end of the second limiting rod, the push plate is rotatably connected with the inner wall of one end of the swing rod through a U-shaped frame arranged at one side of the top of the push plate, a limiting box is rotatably arranged on the inner wall of the other end of the swing rod through a U-shaped frame arranged at the top of the limiting box, and a positioning column is fixedly arranged at the top of the limiting box.

[0008] Optionally, one end of the first limiting rod is fixedly connected with one side of the top of the pressing frame, and the outer surface of the middle part of the first limiting rod is slidably connected with the inner wall of one side of the middle part of the connecting plate.

[0009] Optionally, one end of the first spring is fixedly connected with one side of the bottom of the connecting ring, and the other end of the first spring is fixedly connected with one side of the top of the pressing frame.

[0010] Optionally, the push rod is arranged in an inclined manner, and the outer surface of the bottom of the push rod is slidably connected with one side of the outer surface of one end of the positioning column.

[0011] Optionally, one end of the second limiting rod is fixedly connected with the bottom of the fixing plate, the bottom of the fixing plate is fixedly connected with one end of the second spring, and the other end of the second spring is fixedly connected with the top of the base.

[0012] Optionally, the inner wall of the middle part of the limiting box is slidably connected with the outer surface of the middle part of the third limiting rod, and one end of the third limiting rod is fixedly connected with the inner wall of one side of the middle part of the base.

[0013] In summary, the application has the following beneficial technical effects:

[0014] 1. The utility model discloses a bridge component fatigue performance testing device, adopts the technical scheme as follows: including base, the support rod is fixedly arranged at one end of the top of base, one end of the bottom of connecting plate is fixedly arranged at the other end of support rod, the threaded rod is threadedly inserted into the outer surface of the middle part of connecting plate, the pressing frame is rotatably arranged at one end of threaded rod, the slide rod is fixedly arranged at one side of the top of pressing frame, the connecting ring is slidably arranged on the inner wall of one side of the middle part of slide rod, and the push rod is fixedly arranged on the inner wall of one side of the bottom of connecting ring through the fixing rod.

[0015] 2.The bridge component fatigue performance testing device can conveniently place bridge components of different sizes, does not need to prepare multiple specifications of fixing equipment, improves the use effect of the bridge component fatigue performance testing device, can effectively fix the bridge component, avoids manual support during detection, avoids manual contact with the bridge component, not only can protect the safety of the operator, but also avoids accidental contact of the bridge component, thereby affecting the detection result of the bridge component, and can stably transport the bridge component, prevents damage to the bridge component during transportation, and has a simple structure and is convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic view of the structure of the utility model;

[0017] Figure 2 It is a front view schematic view of the structure of the utility model;

[0018] Figure 3 It is a top view schematic view of the structure of the utility model;

[0019] Figure 4 It is a right side schematic view of the structure of the utility model;

[0020] Figure 5 It is a three-dimensional sectional view schematic view of the structure of the utility model;

[0021] Figure 6 It is a right side sectional view schematic view of the structure of the utility model.

[0022] Reference signs: 1, base; 2, support rod; 3, connecting plate; 4, threaded rod; 5, pressing frame; 6, sliding rod; 7, connecting ring; 8, push rod; 9, first limiting rod; 10, first spring; 11, second limiting rod; 12, push plate; 13, swing rod; 14, limiting frame; 15, positioning column; 16, third limiting rod; 17, second spring; 18, fixed plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The following will be combined with the drawings in the embodiments of the utility model Figures 1-6 The application will be further described in detail.

[0025] The embodiments of the application disclose a bridge component fatigue performance testing device. Figure 1As shown, including the base 1, the base 1 top end fixedly provided with a support rod 2, the support rod 2 the other end is fixedly provided with the bottom of one end of the connecting plate 3, the middle of the connecting plate 3 one side wall is screwed with the middle of the outer surface of the threaded rod 4, the threaded rod 4 one end rotatably provided with the lower pressure frame 5, the lower pressure frame 5 top side and first limiting rod 9 one end fixedly connected, the first limiting rod 9 middle outer surface and the middle of one side wall of the connecting plate 3 is slidably connected, through the first limiting rod 9 middle outer surface in the middle of one side wall of the connecting plate 3 sliding can fix the angle of the lower pressure frame 5 when moving, improve the stability of the lower pressure frame 5 when moving, through the rotation of the threaded rod 4 one end of the crank, the threaded rod 4 can be driven by the connecting plate 3 to move the lower pressure frame 5 downward, so that the lower pressure frame 5 pressure rod is pressed on the bridge component, the bridge component is fixed.

[0026] The lower pressure frame 5 top side is fixedly provided with a slide rod 6, the middle of the outer surface of the slide rod 6 is slidably provided with the inner wall of the middle of one side of the connecting ring 7, the bottom of one side of the connecting ring 7 is fixedly connected with the first spring 10 one end, the other end of the first spring 10 is fixedly connected with the top side of the lower pressure frame 5, the setting of the first spring 10 can drive the connecting ring 7 to move downward when the lower pressure frame 5 moves downward, when the push rod 8 moves to the position so that the connecting ring 7 cannot continue to move downward, the continuous downward movement of the lower pressure frame 5 can stretch the first spring 10, the bottom of one side of the connecting ring 7 is fixedly provided with a push rod 8 through a fixed rod, the push rod 8 is inclined, the bottom of the inclined outer surface of the push rod 8 is slidably connected with the outer surface of one side of the positioning column 15 one end, the inclined setting of the push rod 8 can drive the positioning column 15 to move when the push rod 8 moves downward, adjust the distance between the corresponding positioning columns 15, so that the distance between the corresponding positioning columns 15 can conform to the size of the bridge component.

[0027] The middle of one side wall of the base 1 is slidably provided with a second limiting rod 11, the second limiting rod 11 one end is fixedly connected with the bottom of the fixed plate 18, the bottom of the fixed plate 18 is fixedly connected with the first spring 17 one end, the other end of the second spring 17 is fixedly connected with the top of the base 1, through the setting of the second spring 17 can exert a pulling force on the fixed plate 18, so that the second spring 17 can pull the fixed plate 18 to move downward, so that the second limiting rod 11 drives the push plate 12 to reset.

[0028] The second limiting rod 11 one end is fixedly provided with a push plate 12, the top of one side of the push plate 12 is rotatably connected with the inner wall of the one end of the swing rod 13 through a U-shaped frame, the other end of the swing rod 13 is rotatably provided with a limiting frame 14 through a U-shaped frame, the middle of the inner wall of the limiting frame 14 is slidably connected with the middle of the outer surface of the third limiting rod 16, the one end of the third limiting rod 16 is fixedly connected with the middle of one side wall of the base 1, through the middle of the inner wall of the limiting frame 14 sliding on the middle of the outer surface of the third limiting rod 16, the moving track of the positioning column 15 can be fixed, improve the stability of the positioning column 15 when moving, the top of the limiting frame 14 is fixedly provided with a positioning column 15.

[0029] The implementation principle of the bridge member fatigue performance testing device is as follows: in use, the bridge members to be placed are sleeved on the outer sides of the corresponding same group of positioning columns 15, when the outer sides of the corresponding same group of positioning columns 15 are sleeved with a certain number of bridge members, the corresponding threaded rods 4 are rotated to drive the downward pressing frames 5 to move downward, the downward pressing frames 5 move downward to drive the connecting rings 7 to move downward through the first springs 10, the connecting rings 7 drive the push rods 8 to move downward, the bottom inclined outer surfaces of the push rods 8 contact one side of the outer surfaces of one end of the positioning columns 15, the push rods 8 continuously move downward to make the bottom inclined outer surfaces of the push rods 8 slide on one side of the outer surfaces of one end of the positioning columns 15, the positioning columns 15 are pushed to move, the distance between the corresponding same group of positioning columns 15 is adjusted, and the middle inner walls of the limiting frames 14 slide on the middle outer surfaces of the third limiting rods 16 to drive the swing rods 13 to swing, the swing rods 13 drive the second limiting rods 11 to move upward, the fixed plates 18 move upward to stretch the second springs 17, when the corresponding same group of positioning columns 15 all contact the inner walls of the bridge members and cannot continue to move, the push rods 8 cannot continue to move downward, the first threaded rods 4 are continuously rotated to make the downward pressing frames 5 continuously move downward, the middle outer surfaces of the first limiting rods 9 slide in the middle one side inner walls of the connecting rings 7 to stretch the first springs 10, and the pressing rods of the downward pressing frames 5 press on the top of the bridge members to press and fix the bridge members.

[0030] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fatigue performance testing device for bridge components, comprising a base (1), characterized in that: The base (1) has a support rod (2) fixedly installed at one end of its top, and a connecting plate (3) is fixedly installed at the other end of its bottom. A threaded rod (4) is threadedly inserted into the inner wall of one side of the middle part of the connecting plate (3). A lower pressure frame (5) is rotatably installed at one end of the threaded rod (4). A sliding rod (6) is fixedly installed on one side of the top of the lower pressure frame (5). The inner wall of one side of the middle part of the connecting ring (7) is slidably installed on the outer surface of the middle part of the sliding rod (6). A push rod (8) is fixedly installed on one side of the bottom of the connecting ring (7) by a fixing rod. A second limiting rod (11) is slidably provided on the inner wall of one side of the middle part of the base (1). A push plate (12) is fixedly provided at one end of the second limiting rod (11). The top side of the push plate (12) is rotatably connected to the inner wall of one end of the swing rod (13) through a U-shaped frame. A limiting frame (14) is rotatably provided on the inner wall of the other end of the swing rod (13) through a U-shaped frame. A positioning column (15) is fixedly provided on the top of the limiting frame (14).

2. The fatigue performance testing device for bridge components according to claim 1, characterized in that: The top side of the lower pressure frame (5) is fixedly connected to one end of the first limiting rod (9), and the outer surface of the middle part of the first limiting rod (9) is slidably connected to the inner wall of the middle part of the connecting plate (3).

3. The fatigue performance testing device for bridge components according to claim 1, characterized in that: The bottom side of the connecting ring (7) is fixedly connected to one end of the first spring (10), and the other end of the first spring (10) is fixedly connected to one side of the top of the lower pressure frame (5).

4. The fatigue performance testing device for bridge components according to claim 1, characterized in that: The push rod (8) is inclined, and the inclined outer surface of the bottom of the push rod (8) is slidably connected to one side of the outer surface of one end of the positioning post (15).

5. The fatigue performance testing device for bridge components according to claim 1, characterized in that: One end of the second limiting rod (11) is fixedly connected to the bottom of the fixing plate (18), the bottom of the fixing plate (18) is fixedly connected to one end of the second spring (17), and the other end of the second spring (17) is fixedly connected to the top of the base (1).

6. The fatigue performance testing device for bridge components according to claim 1, characterized in that: The inner wall of the middle part of the limiting frame (14) is slidably connected to the outer surface of the middle part of the third limiting rod (16), and one end of the third limiting rod (16) is fixedly connected to one end of the inner wall of the middle part of the base (1).

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