Test device for bearing capacity detection of tunnel fan supporting structure

Abstract

The utility model belongs to the technical field of tunnel fan supporting structure detection, and discloses a test device for bearing capacity detection of a tunnel fan supporting structure, which comprises a fixing assembly for suspending a tunnel fan, and a base assembly which is arranged at the bottom of the fixing assembly and is used for bearing and collecting bearing capacity data, the base assembly is provided with an execution assembly used for applying force in a balanced mode in the longitudinal direction. The base assembly comprises a counter-force mechanism, four sensors are evenly distributed on the counter-force mechanism, and a bearing plate is installed between the tops of the sensors. The execution assembly comprises two hydraulic jacks which are symmetrically arranged, and a force equalizing mechanism is installed between the tops of the hydraulic jacks. According to the test device for detecting the bearing capacity of the tunnel fan supporting structure, through the arrangement of balanced force application along the longitudinal direction, the uniformity of stress is ensured, and the damage to the supporting structure is avoided; and through the arrangement of balanced bearing multi-point acquisition, the accuracy of bearing capacity detection is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel fan support structure detection technical field, especially, relate to a kind of test device of tunnel fan support structure bearing capacity detection. BACKGROUND

[0002] In tunnel engineering, tunnel fan is the important equipment for ensuring air circulation and safety in tunnel. Since tunnel fan is heavy and usually installed at the top of tunnel, there is certain security risk, so its support structure must be detected for bearing capacity. The test of tunnel fan support structure bearing capacity is an important link to ensure the safe operation of tunnel fan, and must be strictly in accordance with relevant standards and specifications.

[0003] Contrast the Chinese patent with announcement No.CN213336733U, discloses a kind of test device of quickly detecting tunnel fan support structure load, including with two sides pre-buried steel plate connection's inclined pull plate, pre-buried steel plate is pre-buried in tunnel vault interior, still include the plate type counterforce frame connected in the inclined pull plate between by connecting bolt, plate type counterforce frame is provided with anchor rod pull-out tester and support plate between tunnel vault, the sensor of anchor rod pull-out tester is also equipped with pad between tunnel vault.Various forms of fan support structure detection operation needs can be met, and it is strong in universality, and detection efficiency is high.

[0004] But the above-mentioned patent only carries out test at single point, lacks longitudinal balanced force test, both reduces the accuracy of bearing capacity detection, and easily causes support structure damage due to uneven stress, so a new device needs to be designed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of test device of tunnel fan support structure bearing capacity detection to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of test device of tunnel fan support structure bearing capacity detection, including the fixed assembly for suspending tunnel fan, still include the fixed assembly bottom installation is used for supporting and gathering bearing capacity data base seat component, the base seat component is installed on the execution component for longitudinal balanced force test and is used for;The base seat component includes counterforce mechanism, four sensors are uniformly distributed on the counterforce mechanism, and supporting plate is installed between the top of sensor;The execution component includes two hydraulic jacks symmetrically arranged, and equal force mechanism is installed between the top of hydraulic jack.

[0008] Further, the fixing assembly comprises a tunnel vault, two embedded seats are symmetrically arranged in the tunnel vault, a suspension steel plate is arranged below the embedded seats, and a plurality of fastening connecting pieces are uniformly distributed at the bottom of the suspension steel plate.

[0009] Further, the fastening connecting piece adopts a bolt-nut combination.

[0010] Further, the counterforce mechanism comprises a counterforce bottom plate, a plurality of reinforcing ribs are uniformly distributed at the bottom surface of the counterforce bottom plate, and a plurality of mounting holes are uniformly distributed at the two sides of the counterforce bottom plate.

[0011] Further, the mounting hole is a circular through hole, and the reinforcing rib and the counterforce bottom plate are welded together.

[0012] Further, the force equalizing mechanism comprises an equalizing beam, two connecting seats are symmetrically arranged at the bottom surface of the equalizing beam, and a profiled curved surface is arranged at the top surface of the equalizing beam.

[0013] Further, the hydraulic jack is in threaded connection with the connecting seat and the supporting plate respectively.

[0014] Compared with the prior art, the beneficial effects are:

[0015] 1. The longitudinal balanced force exerting structure ensures uniformity of force, and avoids damage to the supporting structure.

[0016] 2. The balanced multi-point loading collecting structure improves the accuracy of the bearing capacity detection.

[0017] 3. The detachable and replaceable equalizing beam structure ensures that appropriate profiled curved surfaces are matched with different tunnel vaults, and further improves the uniformity of force. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the test device for bearing capacity detection of the tunnel fan supporting structure according to the utility model;

[0019] Figure 2 is a front view of the fixing assembly of the test device for bearing capacity detection of the tunnel fan supporting structure according to the utility model;

[0020] Figure 3 is a top view of the base assembly of the test device for bearing capacity detection of the tunnel fan supporting structure according to the utility model;

[0021] Figure 4 is a bottom view of the base assembly of the test device for bearing capacity detection of the tunnel fan supporting structure according to the utility model;

[0022] Figure 5It is the execution assembly schematic view of the test device for bearing capacity detection of the tunnel fan support structure.

[0023] In the drawing marks: 101, tunnel vault; 102, pre-buried seat; 103, suspended steel plate; 104, fastening connecting piece; 201, counterforce bottom plate; 202, bearing plate; 203, sensor; 204, mounting hole; 205, reinforcing rib; 301, hydraulic jack; 302, force-equalizing beam; 303, connecting seat; 304, profiled curved surface. DETAILED DESCRIPTION

[0024] 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 protection scope of the utility model.

[0025] Please refer to Figures 1-5 A test device for bearing capacity detection of a tunnel fan support structure, comprising a fixing assembly for suspending a tunnel fan, further comprising a base assembly for bearing and collecting bearing capacity data installed at the bottom of the fixing assembly, and an execution assembly for balanced force application in the longitudinal direction installed on the base assembly.

[0026] In the embodiment: the fixing assembly comprises a tunnel vault 101, two pre-buried seats 102 are symmetrically arranged in the tunnel vault 101, a suspended steel plate 103 is arranged below the pre-buried seats 102, a plurality of fastening connecting pieces 104 are uniformly distributed at the bottom of the suspended steel plate 103, the fastening connecting pieces 104 adopt bolt-nut combination; the counterforce bottom plate 201 is fixed together with the suspended steel plate 103 by passing through the mounting hole 204 with the fastening connecting piece 104, the pre-buried seats 102 are embedded in the tunnel vault 101, and the tunnel fan is fixed and supported through the suspended steel plate 103;

[0027] In the embodiment, the base assembly comprises a counterforce mechanism, four sensors 203 are uniformly distributed on the counterforce mechanism, and a supporting plate 202 is installed between the top of the sensors 203; the counterforce mechanism comprises a counterforce bottom plate 201, a plurality of reinforcing ribs 205 are uniformly distributed on the bottom surface of the counterforce bottom plate 201, and a plurality of mounting holes 204 are uniformly distributed on the two sides of the counterforce bottom plate 201; the mounting hole 204 is a circular through hole, the reinforcing rib 205 and the counterforce bottom plate 201 are welded together; the supporting plate 202 presses the sensor 203 under stress, the sensor 203 conducts the pressing force to the suspension steel plate 103 and the embedded seat 102 through the counterforce bottom plate 201, at the same time, the sensor 203 transmits the collected bearing force data to the upper computer in real time, completes the bearing force detection test, the mounting hole 204 is used for connecting the fastening connecting piece 104 to pass through the counterforce bottom plate 201 and the suspension steel plate 103, and the reinforcing rib 205 increases the strength of the counterforce bottom plate 201, so that the test is smoothly carried out;

[0028] In the embodiment, the execution assembly comprises two hydraulic jacks 301 symmetrically arranged, and a uniform force mechanism is installed between the top of the hydraulic jacks 301; the uniform force mechanism comprises a uniform force beam 302, two connecting seats 303 are symmetrically arranged on the bottom surface of the uniform force beam 302, and a profiled curved surface 304 is arranged on the top surface of the uniform force beam 302; the hydraulic jack 301 is bolted with the connecting seat 303 and the supporting plate 202 respectively; the hydraulic jack 301 is started, so that the hydraulic jack 301 pushes the uniform force beam 302 through the connecting seat 303 under the support of the supporting plate 202, and the uniform force beam 302 pushes the tunnel vault 101 under the fitting of the profiled curved surface 304.

[0029] Working principle: first, the fastening connecting piece 104 is used to pass through the mounting hole 204, so that the counterforce bottom plate 201 and the suspension steel plate 103 are fixed together, then the hydraulic jack 301 is started, so that the hydraulic jack 301 pushes the uniform force beam 302 through the connecting seat 303 under the support of the supporting plate 202, and the uniform force beam 302 pushes the tunnel vault 101 under the fitting of the profiled curved surface 304, the supporting plate 202 presses the sensor 203 under stress, the sensor 203 conducts the pressing force to the suspension steel plate 103 and the embedded seat 102 through the counterforce bottom plate 201, at the same time, the sensor 203 transmits the collected bearing force data to the upper computer in real time, and the bearing force detection test is completed.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A test device for tunnel fan support structure bearing capacity detection, comprising a fixing assembly for suspending a tunnel fan, characterized in that: The fixed assembly is provided with a base assembly for supporting and collecting bearing capacity data, and an execution assembly for longitudinally balancing force is mounted on the base assembly; The base assembly comprises a counterforce mechanism, and four sensors (203) are uniformly distributed on the counterforce mechanism, and a supporting plate (202) is mounted between the top of the sensors (203); The execution assembly comprises two symmetrically arranged hydraulic jacks (301), and a force balancing mechanism is mounted between the top of the hydraulic jacks (301).

2. The test device for detecting the bearing capacity of a tunnel fan support structure according to claim 1, characterized in that: The fixed assembly comprises a tunnel vault (101), two symmetrically arranged pre-buried seats (102) are arranged in the tunnel vault (101), a suspension steel plate (103) is arranged below the pre-buried seats (102), and a plurality of fastening connecting pieces (104) are uniformly distributed on the bottom of the suspension steel plate (103).

3. The test device for detecting the bearing capacity of a tunnel fan support structure according to claim 2, characterized in that: The fastening connecting pieces (104) are combined by bolts and nuts.

4. The test device for detecting the bearing capacity of a tunnel fan support structure according to claim 1, characterized in that: The counterforce mechanism comprises a counterforce bottom plate (201), a plurality of reinforcing ribs (205) are uniformly distributed on the bottom surface of the counterforce bottom plate (201), and a plurality of mounting holes (204) are uniformly distributed on the two sides of the counterforce bottom plate (201).

5. The test device for detecting the load bearing capacity of a tunnel fan support structure according to claim 4, characterized in that: The mounting holes (204) are circular through holes, and the reinforcing ribs (205) and the counterforce bottom plate (201) are welded together.

6. The test device for detecting the load bearing capacity of a tunnel fan support structure according to claim 1, wherein: The force balancing mechanism comprises a force balancing beam (302), two connecting seats (303) are symmetrically arranged on the bottom surface of the force balancing beam (302), and a profiled curved surface (304) is arranged on the top surface of the force balancing beam (302).

7. The test device for detecting the load bearing capacity of a tunnel fan support structure according to claim 6, characterized in that: The hydraulic jacks (301) are bolted with the connecting seats (303) and the supporting plate (202), respectively.

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