Simulated bridge deck structure wheel type rolling fatigue loading test system

Abstract

The utility model belongs to the technical field of bridge engineering test equipment, and particularly relates to a wheel type rolling fatigue loading test system for simulating a bridge deck structure, which structurally comprises a driving arm, a mounting plate, a roller, a supporting beam and a protective frame body unit which is arranged on the mounting plate and is used for transversely blocking a balancing weight, the track plate unit is arranged on the supporting beam, and the anti-roll frame unit is arranged on the protective frame body unit and inserted into the track plate unit. Compared with the prior art, the vertical loading system at least has the advantages that the mode of achieving vertical loading in the system is relatively simple and safe, and the use and maintenance cost of the system is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge engineering test equipment technical field especially relates to a simulation bridge deck structure wheel type rolling fatigue loading test system. BACKGROUND

[0002] The composition of bridge deck structure generally includes beam body and bridge deck slab. The wheel type rolling fatigue loading test mainly has the following effects: obtaining the durability data of bridge deck structure test piece, and the general method is as follows: simulating the vertical load and rolling mode of vehicle wheel, and reciprocating rolling on the bridge deck slab.

[0003] Correspondingly, the structure of the simulation system mainly includes wheel rolling structure and test piece mounting structure, the former is used to provide continuous wheel rolling effect with parameters set as needed, and the latter is used to provide stable bridge deck structure test piece mounting effect.

[0004] For example, the Chinese utility model patent with the authorization announcement number CN204389321U and the authorization announcement date of 2015.06.10 discloses a bridge deck structure wheel type rolling fatigue loading test platform, and the structure mainly includes foundation, track, stand column, crossbeam, connecting beam, bearing beam, vertical lifting device, horizontal displacement device, support frame, loading wheel, crank connecting rod mechanism, frequency conversion motor, inertia wheel, servo actuator, energy accumulator and temperature sensor.

[0005] The test platform in the utility model patent has the following advantages: one-way and two-way loading of wheel rolling is realized, wheel simulation style and wheel load application style are increased, and the working environment of bridge deck structure can be reasonably simulated.

[0006] However, the test platform at least has the following problems in actual use, that is:

[0007] The platform structure is too complex, and the practicability is relatively poor, the former is at least reflected in the use of servo actuator and energy accumulator, and the latter is at least reflected in the fact that multiple loading wheels have to be used for common support, otherwise the whole rolling structure is easy to incline to one side. UTILITY MODEL CONTENT

[0008] The utility model provides a simulation bridge deck structure wheel type rolling fatigue loading test system, and the technical problems to be solved are as follows: how to more simply and comprehensively simulate wheel type rolling on bridge deck structure in fatigue test.

[0009] The utility model discloses a technical scheme that solves above-mentioned problem adopts: a kind of simulation bridge deck structure wheeled rolling fatigue loading test system, structure includes driving arm, mounting plate, gyro wheel and support beam, further include the protective frame body unit being arranged on the mounting plate, and be used for the lateral blocking counterweight, the track plate unit being arranged on the support beam, and the anti-rollover frame unit being arranged on the protective frame body unit, and inserting the anti-rollover frame unit of track plate unit.

[0010] Further preferred technical solutions are that the protective frame body unit includes a blocking vertical plate arranged on the mounting plate, and a lateral reinforcing plate arranged on the blocking vertical plate.

[0011] Further preferred technical solutions are that the track plate unit includes a lateral plate arranged on the support beam, and a lateral track groove arranged on the lateral plate side surface and used for inserting the anti-rollover frame unit.

[0012] Further preferred technical solutions are that the track plate unit further includes a cushion block arranged on the support beam and used for supporting the lateral plate.

[0013] Further preferred technical solutions are that the anti-rollover frame unit includes a lateral connecting plate arranged on the mounting plate, and a support block arranged on the lateral connecting plate and used for inserting the lateral track groove.

[0014] Further preferred technical solutions are that the support block is in the shape of a cylinder; and the anti-rollover frame unit further includes a support wheel arranged on the support block and used for clamping the lateral track groove.

[0015] Further preferred technical solutions are that the utility model further includes a support pier used for supporting a bridge deck structure test piece.

[0016] Further preferred technical solutions are that the protective frame body unit further includes a vertical groove arranged on the lower end surface of the blocking vertical plate; and the anti-rollover frame unit further includes a vertical connecting rod arranged on the lateral connecting plate and used for inserting the vertical groove.

[0017] Further preferred technical solutions are that the anti-rollover frame unit further includes a jack-up spring arranged on the vertical connecting rod and used for supporting the top surface of the vertical groove.

[0018] Further preferred technical solutions are that the anti-rollover frame unit further includes a fixing groove arranged on the upper end surface of the vertical connecting rod and used for mounting the jack-up spring.

[0019] Compared with the prior art, the utility model has at least the following beneficial effects:

[0020] First, the vertical load is realized in the system in a relatively simple and safe manner, which greatly reduces the use and maintenance cost of the system.

[0021] Second, the roller structure is used together with the track plate unit and the anti-tilt frame unit, so that the roller structure is not easy to be skewed, thereby also liberating the limitation on the number of rollers, and greatly improving the practicability of the system.

[0022] Third, the driving arm is indirectly ensured not to be twisted, thereby prolonging the effective service life thereof. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the utility model.

[0024] Figure 2 It is a position structure schematic view of the protective frame body unit in the utility model.

[0025] Figure 3 It is a position structure schematic view of the track plate unit in the utility model.

[0026] Figure 4 It is a position structure schematic view of the anti-tilt frame unit in the utility model.

[0027] Figure 5 It is a position shape schematic view of the jacking spring in the utility model.

[0028] In the drawing, the meanings of various marks are as follows:

[0029] Counterweight a, bridge deck structure test piece b;

[0030] Driving arm 11, mounting plate 12, roller 13, support beam 14, stand column 15, motor 16, speed reducer 17, crank connecting rod 18, bottom plate 19;

[0031] Protective frame body unit 1, track plate unit 2, anti-tilt frame unit 3, support pier 4;

[0032] Blocking vertical plate 101, transverse reinforcing plate 102, vertical groove 103;

[0033] Transverse plate 201, transverse track groove 202, cushion block 203;

[0034] Transverse connecting plate 301, support block 302, support wheel 303, vertical connecting rod 304, jacking spring 305, fixing groove 306. DETAILED DESCRIPTION

[0035] The following description is only a preferred embodiment of the utility model, and does not limit the scope of the utility model.

[0036] As Figures 1-5As shown, a kind of simulation bridge structure wheel type rolling fatigue loading test system, structure includes driving arm 11, mounting plate 12, rolling wheel 13 and support beam 14, also include the guard frame unit 1 for being set on the mounting plate 12 and being used to laterally block counterweight a, track plate unit 2 being set on the support beam 14, and the anti-rollover frame unit 3 being set on the guard frame unit 1 and being inserted into the track plate unit 2.

[0037] In the embodiment, the mounting plate 12 is hinged with the driving arm 11, and the rolling wheel 13 is connected with the bearing seat, the driving arm 11 is connected with the motor 16 through the crank connecting rod 18 and the speed reducer 17 in sequence. At this point, the rolling wheel 13 can reciprocally roll on the upper surface of the bridge structure test piece b, realizing the basic simulation rolling fatigue effect.

[0038] In addition, the self-weight of the driving arm 11, the mounting plate 12, the rolling wheel 13 and the guard frame unit 1 can be used as the vertical load mentioned above, and the mounting plate 12 can also be additionally added with the counterweight a, and protected from falling by the guard frame unit 1. At this point, the test system has obtained the test effect of adjustable vertical load, and the adjustable mode is relatively simple, safe and low-cost.

[0039] On the other hand, the support beam 14 and the column 15 together constitute the fixed mounting frame of the track plate unit 2, and the anti-rollover frame unit 3 is indirectly fixedly connected with the rolling wheel 13, the number of the track plate unit 2 and the anti-rollover frame unit 3 is 2, and they are one-to-one corresponding and clamped with each other, so that the rolling wheel 13 can always keep vertical state, ensuring the reliability of test results and the stability of system structure itself.

[0040] Specifically, the track plate unit 2 and the anti-rollover frame unit 3 are used in cooperation, at least have the following advantages:

[0041] Firstly, the width and number of the rolling wheel 13 are not limited, so that a single thin rolling wheel 13 can also reciprocally roll vertically on the bridge structure test piece b, greatly expanding the application range of the test system;

[0042] Secondly, the harmful phenomena such as distortion and deflection of the driving arm 11 are avoided, thereby protecting the motor 16, the speed reducer 17 and the crank connecting rod 18.

[0043] The guard frame unit 1 includes a blocking vertical plate 101 arranged on the mounting plate 12, and a transverse reinforcing plate 102 arranged on the blocking vertical plate 101.

[0044] In the embodiment, the number of the vertical plates 101 is 4-8, and the number of the lateral reinforcing plates 102 is 2-4, which together form a rectangular frame structure with both ends open, for blocking and protecting the counterweight a from falling on the bridge structure test piece b.

[0045] The two openings are used for installing the hinge seat, i.e. the hinge part of the driving arm 11, and for taking and placing the counterweight a simply and labor-savingly. For example, the counterweight a can be taken in and out vertically at the opening.

[0046] The track plate unit 2 comprises a lateral plate 201 arranged on the support beam 14, and a lateral track groove 202 arranged on the side of the lateral plate 201 and used for inserting the anti-rollover frame unit 3.

[0047] In the embodiment, the vertical sectional shape of the main structure of the track plate unit 2 is a lateral "U shape", and during the reciprocating rolling of the roller 13, the anti-rollover frame unit 3 at least always fits the top surface and the bottom surface of the lateral track groove 202, thereby ensuring that the roller 13 is always vertical and basically does not affect the reciprocating rolling effect.

[0048] The track plate unit 2 further comprises a cushion block 203 arranged on the support beam 14 and used for supporting the lateral plate 201.

[0049] In the embodiment, the number of the support beams 14 is 2, and the two ends of a single lateral plate 201 are respectively pressed on two stacks of the cushion blocks 203, thereby achieving the effect of stable installation and adjustable installation height, so as to match the roller 13 of different diameters.

[0050] Among them, the number of a stack of the cushion blocks 203 is 2-5, and the thickness of a single block is 1-20 cm.

[0051] The anti-rollover frame unit 3 comprises a lateral connecting plate 301 arranged on the mounting plate 12, and a support block 302 arranged on the lateral connecting plate 301 and used for inserting the lateral track groove 202.

[0052] In the embodiment, the first structure style of the anti-rollover frame unit 3 is that the lateral connecting plate 301 is directly or indirectly fixed with the mounting plate 12, the support block 302 slides on the lateral track groove 202, and at least the top surface and the bottom surface of the lateral track groove 202 fit the support block 302, and more preferably, the three surfaces of the lateral track groove 202 fit and limit the support block 302.

[0053] At this point, the roller 13 is difficult to vertically displace, left-right offset compared to the bridge deck structure test piece b, and has a sufficient stable reciprocating rolling effect.

[0054] The shape of the support block 302 is a cuboid, and the specific shape of the transverse connecting plate 301 is indefinite, so as to fill the vertical height difference and transverse distance between the mounting plate 12 and the transverse rail groove 202.

[0055] The shape of the support block 302 is a cylinder; the anti-rollover frame unit 3 further comprises a support wheel 303 arranged on the support block 302 and used for clamping the transverse rail groove 202.

[0056] In the embodiment, the second structure of the anti-rollover frame unit 3 is that the friction mode between the anti-rollover frame unit 3 and the transverse rail groove 202 is rolling friction, and the resistance of this mode is much smaller than that of the above-mentioned sliding friction mode, so the energy consumption of the motor 16 can be greatly reduced.

[0057] At this time, the support wheel 303 rotates on the support block 302, and the former is also fully clamped with the transverse rail groove 202, so as to finally ensure that the roller 13 is always vertical and can reciprocatingly roll with relatively low resistance.

[0058] The test system further comprises a support pier 4 for supporting the bridge deck structure test piece b.

[0059] In the embodiment, the structure and function of the support pier 4 are similar to those of the cushion block 203, which is placed on the bottom plate 19 and used in the following way: two separate support piers 4 are used to support the two ends of the bridge deck structure test piece b, or two to three stacks of support piers 4 are stacked in a number-adjustable manner, so as to ensure that the bridge deck structure test piece b is placed horizontally and stably.

[0060] The protective frame body unit 1 further comprises a vertical groove 103 arranged on the lower end surface of the blocking vertical plate 101; and the anti-rollover frame unit 3 further comprises a vertical connecting rod 304 arranged on the transverse connecting plate 301 and used for inserting the vertical groove 103.

[0061] In the embodiment, since the support weight on the roller 13 is indefinite and the roller 13 inevitably deforms slightly, the transverse connecting plate 301 in the fixed mounting mode has relatively poor practicability, the lower surface of the transverse connecting plate 301 will greatly rub the bottom surface of the vertical groove 103, and finally the transverse rail groove 202 will be quickly worn and the reciprocating rolling resistance of the roller 13 will be greatly increased.

[0062] More importantly, the transverse connecting plate 301 in the fixed mounting mode limits the size of the roller 13, and rollers with a diameter that is too large or too small are not suitable for use in the system.

[0063] Therefore, another structure of the anti-tilt frame unit 3 is that the vertical connecting rod 304 is fixedly connected with the transverse connecting plate 301 and is inserted with the vertical slot 103, and the vertical connecting rod 304 does not bear a large weight such as a plurality of counterweights a.

[0064] On the other hand, the vertical connecting rod 304 is fully engaged with the vertical slot 103 in the transverse direction, so that the former is not easily displaced in the transverse direction, and ultimately the two points of keeping the roller 13 always vertical and small resistance in the reciprocating rolling manner are considered.

[0065] The anti-tilt frame unit 3 further comprises a jack-up spring 305 arranged on the vertical connecting rod 304 and used for supporting the top surface of the vertical slot 103.

[0066] In the embodiment, the upper and lower ends of the jack-up spring 305 are fixedly connected in a manner of bonding or clamping, so that the anti-tilt frame unit 3 will not fall when the mounting plate 12 is lifted.

[0067] Correspondingly, the anti-tilt frame unit 3 and the track plate unit 2 also do not need to be separated, whether in replacing the roller 13 or the bridge structure test piece b.

[0068] Among them, the elastic coefficient of the jack-up spring 305 is relatively small, and the entire anti-tilt frame unit 3 does not need to be supported in principle, only to avoid the roller 13 from tilting to both sides.

[0069] In the actual test process, the roller 13 is always slightly laterally inclined in real time, which is supported and offset by the supporting block 302 or the supporting wheel 303, so as to ensure that the roller 13 is in a relatively vertical stable state.

[0070] The anti-tilt frame unit 3 further comprises a fixing groove 306 arranged on the upper end surface of the vertical connecting rod 304 and used for mounting the jack-up spring 305.

[0071] In the embodiment, the fixing groove 306 can more stably mount the jack-up spring 305.

[0072] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various modifications can be made within the knowledge range of ordinary skilled persons in the technical field without departing from the purpose of the utility model. These are all non-creative modifications, and as long as they are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A system for simulating wheel rolling fatigue loading of a bridge deck structure, the structure comprising a drive arm (11), a mounting plate (12), a roller (13) and a support beam (14), characterised in that: Further comprising a guard frame unit (1) arranged on the mounting plate (12) and used for transversely blocking the counterweight (a), a track plate unit (2) arranged on the support beam (14), and an anti-rollover frame unit (3) arranged on the guard frame unit (1) and inserted into the track plate unit (2).

2. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 1, characterized in that: The guard frame unit (1) comprises a blocking vertical plate (101) arranged on the mounting plate (12), and a transverse reinforcing plate (102) arranged on the blocking vertical plate (101).

3. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 2, characterized in that: The track plate unit (2) comprises a transverse plate (201) arranged on the support beam (14), and a transverse track groove (202) arranged on the side of the transverse plate (201) and used for inserting the anti-rollover frame unit (3).

4. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 3, characterized in that: The track plate unit (2) further comprises a cushion block (203) arranged on the support beam (14) and used for supporting the transverse plate (201).

5. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 3, characterized in that: The anti-rollover frame unit (3) comprises a transverse connecting plate (301) arranged on the mounting plate (12), and a support block (302) arranged on the transverse connecting plate (301) and used for inserting the transverse track groove (202).

6. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 5, characterized in that: The support block (302) is in a cylindrical shape; the anti-rollover frame unit (3) further comprises a support wheel (303) arranged on the support block (302) and used for clamping the transverse track groove (202).

7. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 1, characterized in that: Further comprising a support pier (4) used for supporting a bridge deck structure test piece (b).

8. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 5, characterized in that: The guard frame unit (1) further comprises a vertical groove (103) arranged on the lower end surface of the blocking vertical plate (101); the anti-rollover frame unit (3) further comprises a vertical connecting rod (304) arranged on the transverse connecting plate (301) and used for inserting the vertical groove (103).

9. The system for simulating the wheel rolling fatigue loading test of bridge deck structure according to claim 8, characterized in that: The anti-rollover frame unit (3) further comprises a jacking spring (305) arranged on the vertical connecting rod (304) and used for supporting the top surface of the vertical groove (103).

10. The system for simulating wheel rolling fatigue loading on a bridge deck structure of claim 9, wherein: The anti-rollover frame unit (3) further comprises a fixing groove (306) arranged on the upper end surface of the vertical connecting rod (304) and used for mounting the jacking spring (305).

Images