Suspension type strength detection device for anti-seismic support

Abstract

The utility model discloses an anti-seismic support suspension type strength detection device which comprises a movable beam used for suspending a support structure; the movable beam is connected with the fixed beam through a relative sliding device, the movable beam is in sliding fit with the relative sliding device in the length direction of the movable beam, and the relative sliding device is in sliding fit with the fixed beam in the length direction of the fixed beam. The included angle between the movable beam and the horizontal plane of the fixed beam is adjustable. According to the utility model, various vibration scenes of the anti-seismic support in a suspension state can be simulated, so that the obtained strength detection data is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge frame detection equipment, in particular to a seismic support suspension type strength detection device. Background Art

[0002] Bridges are common installation structures used to lay cables, pipelines, etc. In order to reduce the potential safety hazards caused by earthquakes, support structures with earthquake-resistant performance have gradually emerged. In order to ensure the product quality of earthquake-resistant supports and enable them to be used for a longer period of time, they need to be strength tested before leaving the factory to evaluate their earthquake-resistant performance. Common vibration detection devices can only simulate reciprocating shaking in a single direction and cannot truly reflect the effects of earthquake waves on earthquake-resistant supports in actual installation conditions, making the detection results inaccurate. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a seismic support suspension type strength detection device, which can simulate various vibration scenarios to which the seismic support is subjected in a suspended state, so that the obtained strength detection data is more accurate.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a seismic support suspension strength detection device, comprising a movable beam for suspending the support structure; the movable beam is connected to the fixed beam through a relative sliding device, the movable beam slides with the relative sliding device along its own length direction, and the relative sliding device slides with the fixed beam along the length direction of the fixed beam; the angle between the movable beam and the fixed beam in the horizontal plane is adjustable.

[0005] Furthermore, the relative sliding device includes a walking mechanism matched with the fixed beam, the lower part of the walking mechanism is connected to the sliding driving device through a rotating mechanism, and the driving end of the sliding driving device is connected to the movable beam.

[0006] Furthermore, multiple hanging points are arranged between the support structure and the movable beam, including a vertical hanging point, a diagonal brace hanging point in the length direction and a diagonal brace hanging point in the width direction; the vertical hanging point and the diagonal brace hanging point in the length direction are located on the same movable beam, the diagonal brace hanging point in the width direction is located on another movable beam, and the two movable beams are arranged in parallel with a distance.

[0007] Furthermore, the two movable beams slide relative to the two fixed beams, each movable beam is connected to each fixed beam via the relative sliding device, and the two fixed beams are arranged in parallel with a spacing.

[0008] Furthermore, the two fixing beams are respectively located on both sides of the support structure.

[0009] Furthermore, the sliding drive device includes a driving motor, an output end of the driving motor is connected to a driving gear, the driving gear is meshed with a driven rack, the driven rack is slidably disposed in a guide groove, and the guide groove is rotatably connected to the bottom of the walking mechanism.

[0010] Beneficial effects: The utility model provides a seismic support suspension type strength detection device, which takes a fixed beam as a position reference and utilizes the coordinated cooperation of a relative sliding device and a movable beam; it can simulate various vibration scenarios to which the seismic support is subjected in a suspended state, thus meeting the multi-situation simulation requirements of seismic tests and making the obtained strength detection data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic top view of the overall structure of an embodiment of the utility model;

[0012] Attached Figure 2 The figure is a schematic structural diagram of a relative sliding device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] As attached Figure 1-2 The seismic support suspension strength detection device comprises a movable beam 1 for suspending a support structure 2; the movable beam 1 is connected to a fixed beam 4 via a relative sliding device 3, the movable beam 1 slides with the relative sliding device 3 along its own length direction, and the relative sliding device 3 slides with the fixed beam 4 along the length direction of the fixed beam 4; the horizontal plane angle between the movable beam 1 and the fixed beam 4 is adjustable.

[0015] This solution is applied to the seismic simulation detection of seismic supports, and is used to simulate the strength performance of seismic supports under various complex vibration conditions, and simulate the installation method of seismic supports in real scenarios by means of suspension. With the fixed beam as the reference, vibration simulation in one direction vector is provided by sliding back and forth along its length direction, and vibration simulation in another direction vector is provided by sliding back and forth along the length direction of the movable beam. Complex vibration simulation can be achieved by sliding back and forth in two directions at the same time. By adjusting the angle between the two horizontal planes, the support structure can be adjusted to any horizontal posture, and then vibration simulation can be performed along the length direction of the fixed beam, or vibration simulation can be performed along the fixed beam direction and the adjusted movable beam direction at the same time, which can more accurately reflect the relative position relationship between the actual support installation posture and the transmission direction of the vibration wave, making the strength performance of the detection response more accurate.

[0016] Embodiment: The relative sliding device 3 includes a walking mechanism 31 matched with the fixed beam 4, the lower part of the walking mechanism 31 is connected to a sliding driving device 32 through a rotating mechanism, and the driving end of the sliding driving device 32 is connected to the movable beam 1. The sliding driving device can directly drive the movable beam to slide back and forth along its own length direction, so that the bracket structure suspended at the bottom is subjected to vibration in the horizontal direction.

[0017] Preferably, the sliding drive device 32 includes a driving motor, the output end of the driving motor is connected to a driving gear, the driving gear is meshed with a driven rack, the driven rack is slidably disposed in a guide slot, and the guide slot is rotatably connected to the bottom of the walking mechanism 31. The vibration frequency is adjusted by changing the speed of the driving motor, and the amplitude of the vibration is adjusted by adjusting the stroke of the reciprocating motion. When not driven, the gear can also be locked so that it cannot rotate, so that the position of the movable beam relative to the guide slot is locked by the cooperation of the gear and the rack.

[0018] There are multiple hanging points between the support structure 2 and the movable beam 1, including a vertical hanging point 21, a length-direction diagonal brace hanging point 22 and a width-direction diagonal brace hanging point 23; the vertical hanging point 21 and the length-direction diagonal brace hanging point 22 are located on the same movable beam 1, the width-direction diagonal brace hanging point 23 is located on another movable beam 1, and the two movable beams 1 are arranged in parallel with each other at a distance.

[0019] Earthquake-resistant supports generally consist of a steel frame structure that supports the structure and a load-bearing structure that disperses the vibration force. The load-bearing structure is composed of a number of vertically suspended arms and a number of inclined suspended arms. The two ends of the arms are connected to the suspension point and the steel frame structure respectively through adjustable hinges, thereby achieving an earthquake-resistant effect.

[0020] Among them, the inclined suspended boom is generally set in two relatively vertical directions with the vertically suspended boom as a reference. Taking the straight pipe bridge as an example, the inclined suspended boom is set along the length direction and width direction of the straight pipe respectively. The hanging points of the vertical boom and the inclined boom in the length direction are located above the straight pipe, while the hanging points of the inclined boom in the width direction are located on one side of the straight pipe. In this scheme, the hanging point above the supporting object is set on the same movable beam, and the hanging point on one side is located on another movable beam. By differentially controlling the motion states of the two movable beams, the complex situation in which the vertical hanging point and the offset hanging point are subjected to different vibration effects in an actual earthquake can be simulated.

[0021] The two movable beams 1 slide relative to the two fixed beams 4 , each movable beam 1 is connected to each fixed beam 4 via the relative sliding device 3 , and the two fixed beams 1 are arranged in parallel with a spacing.

[0022] Before the test, the distance between the two movable beams can be achieved by adjusting the walking mechanism of each relative sliding device individually according to the size of the suspended bracket, ensuring that the supporting part of the bracket of any size is placed horizontally, which conforms to the actual installation conditions on site, thereby improving the versatility of the device. After the test begins, the sliding cooperation and the two walking mechanisms on the same fixed beam maintain a consistent motion state, so that the relative distance between the two movable beams is stable during the process, which can be used to eliminate interference factors in the classification test.

[0023] Preferably, the two fixed beams 1 are respectively located on both sides of the support structure 2. By controlling the motion states of the walking mechanisms walking on the two fixed beams differently, it is possible to simulate the complex situation where the support is subjected to different vibrations in the length direction of the supported object. For example, it is possible to simulate the swinging of the two ends of the suspended straight pipe in opposite directions to the same or different degrees under the vibration.

[0024] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A seismic support suspension strength detection device, characterized in that: The invention comprises a movable beam (1) for suspending a support structure (2); the movable beam (1) is connected to a fixed beam (4) via a relative sliding device (3); the movable beam (1) is slidingly matched with the relative sliding device (3) along its own length direction; the relative sliding device (3) is slidingly matched with the fixed beam (4) along the length direction of the fixed beam (4); and the angle between the movable beam (1) and the fixed beam (4) in the horizontal plane is adjustable.

2. The seismic support suspension strength detection device according to claim 1, characterized in that: The relative sliding device (3) comprises a walking mechanism (31) cooperating with the fixed beam (4); the lower part of the walking mechanism (31) is connected to a sliding driving device (32) via a rotating mechanism; and the driving end of the sliding driving device (32) is connected to the movable beam (1).

3. The seismic support suspension strength detection device according to claim 2, characterized in that: A plurality of suspension points are arranged between the support structure (2) and the movable beam (1), including a vertical suspension point (21), a lengthwise diagonal brace suspension point (22), and a widthwise diagonal brace suspension point (23); the vertical suspension point (21) and the lengthwise diagonal brace suspension point (22) are located on the same movable beam (1), the widthwise diagonal brace suspension point (23) is located on another movable beam (1), and the two movable beams (1) are arranged in parallel with each other.

4. The seismic support suspension strength detection device according to claim 3, characterized in that: The two movable beams (1) slide relative to the two fixed beams (4); each movable beam (1) is connected to each fixed beam (4) via the relative sliding device (3); and the two fixed beams (4) are arranged in parallel with a spacing.

5. The seismic support suspension strength detection device according to claim 4, characterized in that: The two fixed beams (4) are respectively located on both sides of the support structure (2).

6. The seismic support suspension strength detection device according to claim 5, characterized in that: The sliding drive device (32) comprises a driving motor, the output end of the driving motor is connected to a driving gear, the driving gear is meshed with a driven rack, the driven rack is slidably arranged in a guide groove, and the guide groove is rotatably connected to the bottom of the walking mechanism (31).

Images