Inspection device for steel bar truss

Abstract

The utility model discloses an inspection device for a steel bar truss, and belongs to the field of steel bar truss inspection. The inspection device for the steel bar truss comprises a base, a first sliding block is arranged in the middle of one end of the base, a second sliding block is arranged on one side of the outside of the first sliding block, and a laser head is arranged at the front end of the second sliding block. According to the utility model, the problem that a gap exists between the lowermost end of the truss and the placing position of the existing truss height measuring device, so that the measurement accuracy is influenced is solved, and the highest point and the lowest point of the steel bar truss can be detected through the supporting of the supporting sheet and the detection of the laser head; in the detection process, the pointer can be in contact with the sliding frame to identify the highest position of the steel bar truss, the pointer can identify the lowest position of the steel bar truss along with longitudinal movement of the laser head, a user can directly know the highest point and the distance between the lowest points through the scale, and the detection accuracy is improved.

Description

An inspection device for steel trusses Technical Field

[0001] This utility model relates to the field of steel truss inspection, specifically to an inspection device for steel trusses. Background Technology

[0002] The inspection device for steel trusses is used to test their quality and performance. The device ensures that they meet the design standards and construction requirements. The inspection process must be carried out in accordance with the specifications and the data must be recorded completely to ensure the safety and reliability of the truss.

[0003] Chinese utility model ZL202121865083.2 discloses a device for rapidly measuring the height of prefabricated building composite slab trusses. The device includes a composite slab body with several sets of steel trusses at its top. This device can quickly measure the height of the composite slab trusses at multiple points simultaneously, making the measurement process more time-saving and labor-saving, and improving work efficiency. Simultaneously, the movable block can activate a contact switch on a laser rangefinder to simultaneously measure the height of multiple steel truss points, effectively improving work efficiency.

[0004] During the measurement process of the truss height measuring device of the aforementioned patent, there are external structures for connecting and reinforcing the truss. These connecting and reinforcing structures elevate the entire truss. When the truss is placed directly at the test position, there is a gap between the bottom of the truss and the placement position, which affects the accuracy of the measurement. Summary of the Invention

[0005] The purpose of this invention is to provide an inspection device for steel trusses. By supporting the truss with a support plate and using a laser head, the highest and lowest points of the steel truss can be detected. During the inspection, the pointer can be contacted by a sliding frame to mark the highest position of the steel truss, while the pointer can mark the lowest position of the steel truss as the laser head moves longitudinally. The scale allows the user to directly understand the distance between the highest and lowest points, improving the accuracy of the inspection and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an inspection device for steel trusses, comprising a base, a first sliding block disposed at the middle position of one end of the base, a second sliding block disposed on one side outside the first sliding block, a laser head disposed at the front end of the second sliding block, a scale glued to the other side of the front end of the first sliding block, a pointer rotatably connected to the outside of the second sliding block via a connecting shaft, a sliding frame disposed at the upper end of the outside of the first sliding block, and a pressure sensor disposed on the side of the sliding frame facing the pointer.

[0007] Preferably, a threaded rod is provided through the interior of the sliding frame, and the exterior of the threaded rod is threadedly engaged with the through position of the sliding frame.

[0008] Preferably, support plates are provided on both sides of the outer side of the base, and the two support plates are welded and fixed together by a transmission frame.

[0009] Preferably, the upper end of the transmission frame is connected to the lower end of the base by a hydraulic rod.

[0010] Preferably, a second movable rail is provided on one side of the front end of the first sliding block, and a first movable rail is recessed at one end of the base.

[0011] Preferably, both the second movable rail and the first movable rail have threaded rods running through their interiors.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, during measurement, firstly, both ends of the placed steel truss are supported on the upper end of the support plate. The support plate can lift the steel truss by the contraction of the hydraulic rod, allowing it to contact the lowest point of the steel truss. Lifting it prevents protruding parts of the steel truss surface from affecting the accuracy of the measurement. Secondly, during the measurement process, the laser head moves longitudinally to find the highest point of the steel truss. Then, the sliding frame moves longitudinally downwards by rotating through the threaded rod, causing the pressure sensor to press against a fixed pointer. The pressure sensor sends a stop signal to the corresponding motor of the threaded rod, fixing the lowest position of the sliding frame. Finally, after the pointer moves longitudinally with the laser head to find the lowest point of the steel truss, the spacing can be accurately and intuitively understood through the markings on the scale and the direction of the sliding frame and pointer. This facilitates accurate measurement of the steel truss, improving the inspection effect and accuracy of the steel truss. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall external structure of this utility model;

[0015] Figure 2 is a schematic diagram of the sliding frame transmission structure of this utility model;

[0016] Figure 3 is a partial enlarged view of region B in Figure 2 of this utility model.

[0017] In the diagram: 1. Base; 2. Transmission frame; 3. Hydraulic rod; 4. Support plate; 7. First movable rail; 8. First sliding block; 9. Second movable rail; 10. Second sliding block; 11. Laser head; 12. Pointer; 13. Scale; 14. Sliding frame; 15. Threaded rod; 16. Connecting shaft; 17. Pressure sensor. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments.

[0019] As shown in Figure 1, an inspection device for a steel truss in this embodiment includes a base 1. Support plates 4 are provided on both sides of the base 1. The two support plates 4 are welded and fixed together by a transmission frame 2. The upper end of the transmission frame 2 is connected to the lower end of the base 1 by a hydraulic rod 3. The contraction of the hydraulic rod 3 can simultaneously push the support plates 4 to adjust their longitudinal horizontal position. When the steel truss is suspended, the support plates 4 support both ends of the steel truss and make the steel truss suspended in the air.

[0020] The base 1 has a first sliding block 8 at the middle of one end, a second sliding block 10 on one side of the outside of the first sliding block 8, and a laser head 11 at the front end of the second sliding block 10. The laser head 11 can emit laser light and detect the highest and lowest points of the steel truss. A second movable rail 9 is provided on one side of the front end of the first sliding block 8. A first movable rail 7 is recessed at one end of the base 1. The first sliding block 8 is embedded in the first movable rail 7 and is slidably connected to the inside of the first movable rail 7. The laser head 11 is embedded in the second movable rail 9 and is slidably connected to the inside of the second movable rail 9. The position of the laser head 11 can be adjusted by sliding the first sliding block 8 along the first movable rail 7 and the second sliding block 10 along the second movable rail 9, so that the laser head 11 can detect the corresponding steel truss.

[0021] In addition, a scale 13 is provided on the other side of the front end of the first sliding block 8, and the scale 13 is bonded and fixed to the first sliding block 8 with glue. The reserved scale 13 makes it convenient to mark the position and spacing when the laser head 11 is adjusting the horizontal position and the highest and lowest points of the steel truss are detected, so that the user can directly understand the size of the steel truss.

[0022] To facilitate user operation, a pointer 12 is provided on the outer side of the second sliding block 10 facing the scale 13, as shown in Figure 3. The pointer 12 is rotatably connected to the second sliding block 10 via a connecting shaft 16. When the laser head 11 slides longitudinally, the pointer 12 can be rotated to unfold and approach the scale 13. A sliding frame 14 is provided on the upper outer side of the first sliding block 8, and a pressure sensor 17 is provided on the side of the sliding frame 14 facing the pointer 12, as shown in Figure 2. A threaded rod 15 is provided through the interior of the sliding frame 14, and the outer side of the threaded rod 15... The sliding frame 14 is threaded through the sliding frame 14. When the laser head 11 detects the highest point of the steel truss, the sliding frame 14 and the pressure sensor 17 can be driven by the threaded rod 15 to contact the fixed pointer 12. When they contact, the pressure sensor 17 will give a stop signal to the motor corresponding to the threaded rod 15. After the threaded rod 15 stops, the lower end of the sliding frame 14 will be fixed at the highest position of the steel truss detected by the laser head 11. A motor is provided at one end of the threaded rod 15, and the pressure sensor 17 is electrically connected to the motor at one end of the threaded rod 15.

[0023] Both the second movable rail 9 and the first movable rail 7 have threaded rods 15 running through their interiors. The exterior of one threaded rod 15 passes through the first sliding block 8 inside the first movable rail 7, while the exterior of the other threaded rod 15 passes through the second sliding block 10 inside the second movable rail 9. The exterior of the threaded rod 15 is threadedly engaged with the penetration positions of the second sliding block 10 and the first sliding block 8. By restricting the first movable rail 7 and the second movable rail 9, the second sliding block 10 and the first sliding block 8 can move laterally and are used for the inspection of the steel truss.

[0024] Working principle: When using the device to inspect the steel truss, the inspection requires measuring the distance between the highest and lowest positions of the steel truss. The two ends of the steel truss are placed on the upper end of the support plate 4. The retraction of the hydraulic rod 3 allows the transmission frame 2 to lift the support plate 4 and the steel truss at the support plate 4. The pointer 12 is activated, and the threaded rod 15 inside the second movable rail 9 rotates, causing the second sliding block 10 to slide longitudinally within the second movable rail 9 to adjust the horizontal position of the laser head 11. The laser head 11 emits a horizontal laser beam, which projects to find the highest point of the steel truss. Once the highest point is found, the rotation of the threaded rod 15 inside the second movable rail 9 stops. The threaded rod 15 passing through the sliding frame 14 rotates, causing the sliding frame 14 to move the pressure sensor 17 toward the pointer 12 until the pointer 12 contacts and presses. The pressure sensor 17 sends a stop signal to the motor corresponding to the threaded rod 15. The laser head 11 emits a horizontal laser beam, and the second sliding block 10 slides longitudinally within the second movable rail 9. The laser head 11 uses projection to find the lowest point of the steel truss. After finding the highest point, the rotation of the threaded rod 15 inside the second movable rail 9 stops. The distance between the pointer 12 and the sliding frame 14 can be directly marked by the scale 13, allowing the user to directly observe the distance and facilitating the inspection of the steel truss.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An apparatus for inspecting a steel bar truss comprising a base (1), characterized in that, A first sliding block (8) is provided at the middle position of one end of the base (1). A second sliding block (10) is provided on one side outside the first sliding block (8). A laser head (11) is provided at the front end of the second sliding block (10). A scale (13) is glued to the other side of the front end of the first sliding block (8). A pointer (12) is rotatably connected to the outside of the second sliding block (10) through a connecting shaft (16). A sliding frame (14) is provided at the upper end of the outside of the first sliding block (8), and a pressure sensor (17) is provided on the side of the sliding frame (14) facing the pointer (12).

2. A device for inspecting a steel bar truss according to claim 1, wherein A threaded rod (15) is provided through the interior of the sliding frame (14), and the outside of the threaded rod (15) is threadedly engaged with the through position of the sliding frame (14).

3. The apparatus for inspecting a steel bar truss according to claim 1, wherein Support plates (4) are provided on both sides of the base (1), and the two support plates (4) are welded and fixed together by a transmission frame (2).

4. A device for inspecting a steel bar truss according to claim 3, wherein The upper end of the transmission frame (2) is connected to the lower end of the base (1) by a hydraulic rod (3).

5. A device for inspecting a steel bar truss according to claim 4, wherein The first sliding block (8) has a second movable rail (9) on one side of its inner front end, and the base (1) has a first movable rail (7) recessed at one end.

6. A device for inspecting a steel bar truss according to claim 5, wherein Both the second movable rail (9) and the first movable rail (7) have threaded rods (15) running through their interiors.

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