Foldable detection frame for performance test of prefabricated stair structure

Abstract

The utility model discloses a foldable detection frame for a performance test of a prefabricated stair structure, which comprises two parallel I-shaped steel side edges, and a connecting cross beam is arranged between the two I-shaped steel side edges and is matched with the two I-shaped steel side edges to form a bottom frame. A high support and a low support are arranged at the two ends, in the length direction of the side edges of the I-shaped steel, of the bottom frame respectively, C-shaped sliding seats are arranged on upper wing plates on the side edges of the two I-shaped steel, do reciprocating motion in the length direction of the upper wing plates and are fixed in position, and the C-shaped sliding seats are connected with a rotating base through hinges. Fixing screws are further arranged between the C-shaped sliding seats and the rotating bases, and stress portals are arranged on the two rotating bases. The device is good in structural integrity and does not need to be fixed on the ground for use, and the use flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated component detection, in particular to a foldable detection frame for testing the structural performance of a prefabricated staircase. Background Art

[0002] The structural performance inspection of prefabricated stairs is a necessary part of their acceptance. If the test can be carried out in advance at the component factory, it can be guaranteed to pass the acceptance smoothly. During the test, a test frame is needed. Through the cooperation of the test frame and the hydraulic cylinder, the prefabricated stairs are pressure tested. The existing test frame has a bottom support frame and a load-bearing portal frame. The load-bearing portal frame offsets the reaction force of the hydraulic cylinder and transmits it to the ground. The load-bearing portal frame is generally an independent structure that needs to be fixed on the ground, and the support frame for the prefabricated stairs needs to be pushed to the bottom of the load-bearing portal frame. Due to its heavy weight, it is difficult to push, and the rolling assembly is easily damaged during the downward pressure process. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a foldable detection frame for testing the structural performance of prefabricated stairs, which has good structural integrity and does not need to be fixed on the ground for use, thereby improving the flexibility of use.

[0004] In order to solve the above technical problems, the utility model provides a foldable inspection frame for testing the structural performance of prefabricated stairs, comprising two parallel I-beam sides, a connecting beam is arranged between the two I-beam sides and cooperate to form a bottom frame, and high supports and low supports are respectively arranged at both ends of the bottom frame along the length direction of the I-beam side sides, and C-shaped slides are arranged on the upper wing plates of the two I-beam sides, the C-shaped slides reciprocate along the length direction of the upper wing plates and are fixed in position, the C-shaped slides are connected to the rotating base through hinges, and fixing screws are also arranged between the C-shaped slides and the rotating base, and force-bearing door frames are arranged on the two rotating bases.

[0005] Furthermore, a positioning screw is provided on the C-shaped slide seat, and the positioning screw is threadedly connected to the C-shaped slide seat and is used to press against the upper surface or the lower surface of the upper wing plate to limit the displacement of the C-shaped slide seat.

[0006] Furthermore, an internal threaded sleeve is provided on the surface of the C-shaped slide seat on one side of the rotating base, and the fixing screw passes through the rotating base and is locked and connected with the internal threaded sleeve.

[0007] Furthermore, the load-bearing portal frame includes two columns, the two columns are respectively fixed on two rotating bases, and a reaction beam is arranged between the two columns.

[0008] Furthermore, sleeve holes are provided at both ends of the reaction beam, and a plurality of adjustment lock holes are provided on the column. The reaction beam is sleeved on the column through the sleeve holes and fixed in position by limiting bolts passing through corresponding adjustment lock holes on the column.

[0009] Furthermore, safety bolts are arranged in the adjustment lock holes located on the upper side and the lower side of the reaction beam.

[0010] Furthermore, a lifting ring is provided on the reaction beam.

[0011] Furthermore, the two C-shaped slides are fixed as a whole via a connecting rod.

[0012] Beneficial effects of the utility model:

[0013] 1. The use of C-type sliding hinges and rotating bases can make the load-bearing door frame move and have the ability to tip over. During the installation and placement of the prefabricated stairs, the load-bearing door frame will not interfere with the tipping, and can be straightened for use during inspection, which effectively solves the problem of the prefabricated stairs being placed unchanged.

[0014] 2. The load-bearing portal frame and the bottom frame are fixed with a hard connection, and the prefabricated stairs are located between the two. Therefore, the force acting on the load-bearing portal frame will be transmitted to the bottom frame. Therefore, the load-bearing portal frame and the bottom frame do not need to be fixed on the ground. The load-bearing portal frame can also be laid flat for easy overall movement and storage.

[0015] 3. The C-type slide can move, thereby driving the load-bearing portal frame to move, so that the load-bearing portal frame can be moved to the corresponding detection position of the prefabricated stairs. It has high versatility and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the connection structure between the load-bearing door frame and the side of the I-beam of the utility model;

[0018] Figure 3 This utility model Figure 2 A side view of the connecting structure;

[0019] Figure 4 This is a schematic diagram of the connection structure between the column and the reaction beam of the utility model;

[0020] Figure 5 This is a schematic diagram of the utility model when the load-bearing door frame is stored;

[0021] Figure 6 It is a schematic diagram of the load-bearing door frame of the utility model when in use. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0023] Reference Figure 1 branch Figure 4 As shown, an embodiment of the foldable inspection frame for testing the structural performance of prefabricated stairs of the utility model comprises two parallel I-beam sides 1, a connecting beam is arranged between the two I-beam sides and cooperates to form a bottom frame, high supports 3 and low supports 4 are respectively arranged at both ends of the bottom frame along the length direction of the I-beam sides, C-shaped slides 5 are arranged on the upper wing plates of the two I-beam sides, the C-shaped slides reciprocate along the length direction of the upper wing plates and are fixed in position, the C-shaped slides are connected to the rotating base 7 through hinges 6, fixing screws 8 are also arranged between the C-shaped slides and the rotating base, and force-bearing door frames 9 are arranged on the two rotating bases.

[0024] During use, the load-bearing door frame is first in a flat storage state, and the rotating base on the C-shaped slide is rotated to open through the cooperation of the hinge. Figure 5 As shown, at this time, the C-type slide can move arbitrarily on the upper wing plate without locking the position. Then, the prefabricated stairs are hoisted to the high supports and the low supports by hoisting equipment such as the gantry crane for placement. Among them, the high support is a support structure with adjustable height, which is adjusted according to the size of the prefabricated stairs, and the low support is adjusted to a fixed position according to the length of the prefabricated stairs to ensure that the distance between the low support and the high support meets the placement requirements. After the prefabricated stairs are placed, the C-type slide is moved according to the test detection position. After the C-type slide is in place, its position is fixed, and then the load-bearing door frame is flipped and erected. At this time, the rotating base on the C-type slide forms a rotating closed state through the cooperation of the hinge, refer to Figure 6 As shown, it is ensured that the top of the load-bearing portal frame is located above the prefabricated stairs. After the load-bearing portal frame is erected, the C-shaped slide and the rotating base are fixed together by locking screws. Finally, the detection components such as the oil cylinder and the sensor for detection are placed between the load-bearing portal frame and the prefabricated stairs for test detection.

[0025] During the inspection process, the reaction force generated by the cylinder is offset by the cooperation between the load-bearing gantry and the bottom frame. Therefore, neither the load-bearing gantry nor the bottom frame needs to be fixed on the ground, so that the entire inspection frame can be moved, reducing the inconvenience caused by site restrictions.

[0026] Specifically, in the process of fixing the C-type slide and the upper wing plate, a positioning screw 10 arranged on the C-type slide is used. The positioning screw is threadedly connected to the C-type slide, and the positioning screw is rotated so that the positioning screw extends out and presses against the lower surface of the upper wing plate, thereby limiting the displacement of the C-type slide. Of course, the positioning screw can also be arranged on the upper part of the C-type slide. At this time, the positioning screw extends out and presses against the upper surface of the upper wing plate, which can achieve the fixation of the C-type slide and prevent it from moving.

[0027] In order to ensure the overall strength of the C-type slide and the rotating base after being connected and fixed, an internal threaded sleeve 11 is provided on the surface of the C-type slide located on one side of the rotating base. The fixing screw passes through the rotating base and is locked and connected with the internal threaded sleeve, which effectively increases the threaded connection length of the fixing screw. The connection strength after connection is high and not easy to be damaged.

[0028] The above-mentioned load-bearing door frame includes two columns 12, and the two columns are respectively fixed on two rotating bases. A reaction beam 13 is arranged between the two columns. The two columns and the reaction beam are connected to form a whole, and they move synchronously when flipping, and the operation is convenient. Specifically, sleeve holes 14 are arranged at both ends of the reaction beam, and a plurality of adjustment lock holes 15 are arranged on the column. The reaction beam is sleeved on the column through the sleeve holes and fixed in position by passing the corresponding adjustment lock holes on the column through the limit bolts 16. The reaction beam can be limited in horizontal movement through the sleeve holes, and can be limited in vertical movement through the limit bolts, thereby forming an effective position limit. The reaction beam adjusts the position according to the position detection at different heights, and the operation is convenient.

[0029] In the above adjustment process, since the load-bearing portal frame can be turned over and laid flat, the reaction beam can be adjusted and fixed at a lower position without climbing up, which greatly improves the safety of operation. The load-bearing portal frame can be turned over manually, but in order to improve the safety of use, it can be assisted by a sling. A lifting ring is provided on the reaction beam, and the sling is connected to the lifting ring. Then the load-bearing portal frame is pulled up to achieve the purpose of turning over. Safety bolts 17 are provided in the adjustment lock holes on the upper and lower sides of the reaction beam. Even if the limit bolts are broken, the safety bolts can ensure that the reaction beam will not fall directly downward from the column or fall out of the column upward, thereby improving safety.

[0030] In one embodiment, during the connection between the above-mentioned column and the reaction beam, the sliding of the C-shaped slide may be asynchronous, which may easily cause movement jam. In order to ensure smoother movement, the two C-shaped slides are fixed together through a connecting rod to improve the smoothness of movement.

[0031] The above embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in this technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A foldable testing frame for testing the structural performance of prefabricated stairs, characterized in that: It includes two parallel I-beam sides, a connecting crossbeam is arranged between the two I-beam sides and cooperate to form a bottom frame, high supports and low supports are respectively arranged at both ends of the bottom frame along the length direction of the I-beam sides, and C-shaped slides are arranged on the upper wing plates of the two I-beam sides. The C-shaped slides reciprocate along the length direction of the upper wing plates and are fixed in position. The C-shaped slides are connected to the rotating base through hinges, and fixing screws are also arranged between the C-shaped slides and the rotating base. Force-bearing door frames are arranged on the two rotating bases.

2. The foldable testing frame for testing the structural performance of prefabricated stairs according to claim 1, characterized in that: The C-shaped slide seat is provided with a positioning screw, which is threadedly connected to the C-shaped slide seat and is used to press against the upper surface or the lower surface of the upper wing plate to limit the displacement of the C-shaped slide seat.

3. The foldable testing frame for testing the structural performance of prefabricated stairs according to claim 1, characterized in that: An internal thread sleeve is arranged on the surface of the C-shaped slide seat on one side of the rotating base, and the fixing screw passes through the rotating base and is locked and connected with the internal thread sleeve.

4. The foldable testing frame for testing the structural performance of prefabricated stairs according to claim 1, characterized in that: The load-bearing portal frame comprises two upright posts, which are respectively fixed on two rotating bases, and a reaction beam is arranged between the two upright posts.

5. The foldable testing frame for testing the structural performance of prefabricated stairs according to claim 4, characterized in that: The reaction beam is provided with sleeve holes at both ends, and the column is provided with a plurality of adjustment lock holes. The reaction beam is sleeved on the column through the sleeve holes and fixed in position by limiting bolts passing through the corresponding adjustment lock holes on the column.

6. The foldable testing frame for testing the structural performance of prefabricated stairs according to claim 5, characterized in that: Safety bolts are arranged in the adjusting lock holes located on the upper side and the lower side of the reaction beam.

7. The foldable testing frame for testing the structural performance of prefabricated stairs according to claim 4, characterized in that: A lifting ring is arranged on the reaction beam.

8. The foldable testing frame for testing the structural performance of prefabricated stairs according to claim 1, characterized in that: The two C-shaped slide seats are fixed as a whole through a connecting rod.

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