Auxiliary support device for static load test of post-tensioned box girder

Abstract

The utility model belongs to the field of railway test auxiliary tools, and particularly relates to an auxiliary support device for a static load test of a post-tensioned box girder. The railway box girder static load test auxiliary tool solves the problems of safety, stability and high efficiency of the railway box girder static load test auxiliary tool, and comprises a main rod which is vertically arranged; the horizontal support is fixed at the lower end of the main rod; the three-legged support is installed at the bottom of the horizontal support, and the three-legged support is fixed to the ground; and the adjusting rod is connected to the upper end of the main rod, and the end part of the adjusting rod is connected with a dial indicator. The device is simple in structure, low in cost, convenient and fast to use, safe and reliable to operate, and suitable for checking construction of the tensioning jack, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of railway test auxiliary tools, in particular to an auxiliary bracket device for static load testing of a post-tensioned box beam. Background Art

[0002] At present, bridges are widely used in railway projects. Post-tensioned box girders have been widely used due to their advantages such as good stress resistance, simple structure and factory construction. The stiffness of post-tensioned simply supported box girders is the guarantee of operational safety. According to the requirements of the specifications, they need to be inspected frequently. During the inspection, a micrometer is needed to detect the position of the box girder supports and the mid-span position. The fixation of the micrometer needs to be safe, stable, and free from deformation and external influences. The existing method is to weld a disposable steel frame and bury it in concrete for fixed measurement. There are problems such as difficult installation, low efficiency, easy to be affected by external interference and non-reusable.

[0003] In view of the above problems, how to solve the problem of safety, stability and efficiency of railway box girder static load test auxiliary tools requires a new structure to solve this problem. Summary of the Invention

[0004] In order to solve the problems of safety, stability and high efficiency of auxiliary tools for static load testing of railway box beams, the utility model provides an auxiliary bracket device for static load testing of post-tensioned box beams.

[0005] The utility model adopts the following technical solution: an auxiliary support device for static load test of post-tensioned box beam, comprising:

[0006] A main rod, wherein the main rod is arranged vertically;

[0007] A horizontal support fixed to the lower end of the main rod;

[0008] A tripod, the tripod being mounted on the bottom of the horizontal support and fixed on the ground;

[0009] An adjusting rod is connected to the upper end of the main rod, and the end of the adjusting rod is connected to the dial indicator.

[0010] In some embodiments, the main rod comprises:

[0011] A lower main rod, the lower end of which is fixed to the horizontal support;

[0012] A fastening sleeve, the fastening sleeve being riveted to the upper end of the lower main rod;

[0013] The upper main rod has a lower end mounted in a fastening sleeve, a threaded hole is provided on the fastening sleeve, and a fixing knob is threadedly connected in the threaded hole.

[0014] In some embodiments, the lower main rod is a hollow circular tube, and a circular plate is sealed at the lower end of the lower main rod.

[0015] In some embodiments, the fastening sleeve is a plastic hollow member, and the hollow diameter of the fastening sleeve is slightly larger than the diameter of the upper main rod.

[0016] In some embodiments, a connecting rod is provided between the three legs of the tripod, and a stabilizing block is provided on the connecting rod.

[0017] In some embodiments, the stabilizing blocks are multiple U-shaped iron blocks with different thicknesses, and the stabilizing blocks are hung on the connecting rods.

[0018] In some embodiments, the angle between any two adjacent legs of the tripod is 135°, the lower end of the leg is a flat bent portion, a circular threaded hole is provided in the middle of the flat bent portion, and a leveling bolt connected to the ground is provided in the circular threaded hole.

[0019] In some embodiments, the adjusting rod is hingedly connected to the upper end of the upper main rod, and a middle adjusting knob is passed through the hinge point between the adjusting rod and the upper main rod, and the middle adjusting knob is used to rotate and clamp the adjusting rod.

[0020] In some embodiments, one end of the adjusting rod is fixed to the dial indicator by a dial indicator fixing knob and a rotational clamp.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model forms a stable structure by bolting the lower main rod to the triangular legs and horizontal supports, and by using a counterweight of a quick-insert stabilizing block. The horizontal adjustment of the device is achieved by connecting the leveling bolts to the triangular legs and hingedly connecting them to the base plate. The height of the upper main rod is adjusted by riveting the fastening sleeve to the lower main rod and combining it with a fixed knob. The middle adjustment knob cooperates with the adjustment rod and the dial indicator fixed knob. The dial indicator is placed in the inspection position by raising and lowering the upper main rod and rotating the adjustment rod. The structure is simple, low-cost, convenient and quick to use, safe and reliable to operate, and has improved efficiency. It is suitable for tensioning jack calibration construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the front of the utility model;

[0024] Among them, 1 is the base plate, 2 is the pressure cover, 3 is the leveling bolt, 4 is the triangular support leg, 5 is the horizontal support, 6 is the stabilizing block, 7 is the lower main rod, 8 is the fixing knob, 9 is the fastening sleeve, 10 is the upper main rod, 11 is the middle adjustment knob, 12 is the adjustment rod, and 13 is the dial indicator fixing knob. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, an auxiliary support device for static load testing of a post-tensioned box girder comprises:

[0027] A main rod, wherein the main rod is arranged vertically;

[0028] A horizontal support 5 is fixed to the lower end of the main rod;

[0029] A tripod 4 is mounted on the bottom of the horizontal support 5 and fixed on the ground 1;

[0030] The adjusting rod 12 is connected to the upper end of the main rod, and the end of the adjusting rod 12 is connected to the dial indicator.

[0031] Specifically, the main rod includes:

[0032] A lower main rod 7, the lower end of which is fixed to the horizontal support 5;

[0033] A fastening sleeve 9, which is riveted to the upper end of the lower main rod 7, wherein the fastening sleeve 9 is a sleeve structure with a sealed bottom end;

[0034] The upper main rod 10 has its lower end installed in the fastening sleeve 9. The fastening sleeve 9 has a threaded hole, and the threaded hole is threadedly connected to the fixing knob 8.

[0035] Specifically, the lower main rod 7 is a hollow circular tube, and the lower end of the lower main rod 7 is sealed with a circular plate.

[0036] Specifically, the fastening sleeve 9 is a plastic hollow component, and the hollow diameter of the fastening sleeve 9 is slightly larger than the diameter of the upper main rod 10 .

[0037] Specifically, a connecting rod is provided between the three legs of the tripod 4 , and a stabilizing block 6 is provided on the connecting rod.

[0038] Specifically, the stabilizing block 6 is a plurality of U-shaped iron blocks with different thicknesses, and the stabilizing block 6 is hung on the connecting rod.

[0039] Specifically, the angle between any two adjacent legs of the tripod 4 is 135°, the lower end of the leg is a flat bent portion, a circular threaded hole is provided in the middle of the flat bent portion, and a leveling bolt 3 connected to the ground 1 is provided in the circular threaded hole.

[0040] Specifically, the adjusting rod 12 is hingedly connected to the upper end of the upper main rod 10 , and a middle adjusting knob 11 is passed through the hinge point between the adjusting rod 12 and the upper main rod 10 . The middle adjusting knob 11 is used to rotate and clamp the adjusting rod 12 .

[0041] Among them, a threaded hole is set at the hinge point of the adjusting rod 12 and the upper main rod 10, and an intermediate adjusting knob 11 is set in the threaded hole. The intermediate adjusting knob 11 is a knob with a threaded rod, and the end of the threaded rod is screwed into the threaded hole for tightening.

[0042] Specifically, one end of the adjusting rod 12 is fixed to the dial indicator by being rotatably clamped through the dial indicator fixing knob 13 .

[0043] Among them, the adjusting rod 12 is also hingedly connected to the dial indicator, and a threaded hole is set at the hinge position. A dial indicator fixing knob 13 is set in the threaded hole. The dial indicator fixing knob 13 is a knob with a threaded rod, and the end of the threaded rod is screwed into the threaded hole for tightening.

[0044] The working principle of this utility model is:

[0045] Connect the lower main rod to the triangular support leg and the horizontal support bolt, connect the leveling bolt to the triangular support leg, hinge it with the base plate, bolt the pressure cover to the base plate, manually level the height of the three legs, insert multiple stabilizing blocks into the upper counterweight stabilizing device in the round steel plate at the lower end of the lower main rod, connect the fastening sleeve to the lower main rod through rivets, screw a small part of the fixing knob into the fastening sleeve thread, pass the upper main rod through the fastening sleeve and into the lower main rod, tighten the fixing knob, fasten one end of the middle adjusting knob to the upper end of the upper main rod and rotate and clamp it with the adjusting rod, fasten one end of the dial indicator fixing knob to the upper end of the adjusting rod and rotate and clamp it with the dial indicator, move the device to the appropriate position according to the designed inspection position, make the dial indicator in the inspection position by raising and lowering the upper main rod and rotating the adjusting rod angle, tighten all fasteners, start the inspection construction, and dismantle the device in reverse order after completion.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary support device for static load test of post-tensioned box beam, characterized in that: include: A main rod, wherein the main rod is arranged vertically; A horizontal support (5), wherein the horizontal support (5) is fixed to the lower end of the main rod; A tripod (4), wherein the tripod (4) is mounted on the bottom of the horizontal support (5), and the tripod (4) is fixed on the ground (1); An adjusting rod (12) is connected to the upper end of the main rod, and the end of the adjusting rod (12) is connected to a micrometer.

2. The auxiliary support device for static load test of post-tensioned box beam according to claim 1, characterized in that: The main rod comprises: A lower main rod (7), the lower end of which is fixed to the horizontal support (5); A fastening sleeve (9), wherein the fastening sleeve (9) is riveted to the upper end of the lower main rod (7); An upper main rod (10), wherein the lower end of the upper main rod (10) is mounted in a fastening sleeve (9), a threaded hole is provided on the fastening sleeve (9), and a fixing knob (8) is connected to the threaded hole.

3. The auxiliary support device for static load test of post-tensioned box beam according to claim 2, characterized in that: The lower main rod (7) is a hollow circular tube, and the lower end of the lower main rod (7) is sealed with a circular plate.

4. The auxiliary support device for static load test of post-tensioned box beam according to claim 2, characterized in that: The fastening sleeve (9) is a plastic hollow component, and the hollow diameter of the fastening sleeve (9) is slightly larger than the diameter of the upper main rod (10).

5. The auxiliary support device for static load test of post-tensioned box beam according to claim 4, characterized in that: A connecting rod is provided between the three support legs of the tripod support (4), and a stabilizing block (6) is provided on the connecting rod.

6. The auxiliary support device for static load test of post-tensioned box beam according to claim 5, characterized in that: The stabilizing blocks (6) are a plurality of U-shaped iron blocks with different thicknesses, and the stabilizing blocks (6) are hung on the connecting rod.

7. The auxiliary support device for static load test of post-tensioned box beam according to claim 1, characterized in that: The angle between any two adjacent legs of the tripod (4) is 135°, the lower end of the leg is a flat bent portion, a round threaded hole is provided in the middle of the flat bent portion, and a leveling bolt (3) connected to the ground (1) is provided in the round threaded hole.

8. The auxiliary support device for static load test of post-tensioned box beam according to claim 2, characterized in that: The adjusting rod (12) is hingedly connected to the upper end of the upper main rod (10), and a middle adjusting knob (11) is passed through the hinge point between the adjusting rod (12) and the upper main rod (10). The middle adjusting knob (11) is used to rotate and clamp the adjusting rod (12).

9. The auxiliary support device for static load test of post-tensioned box beam according to claim 8, characterized in that: One end of the adjusting rod (12) is fixed to the dial gauge by a dial gauge fixing knob (13) through rotational clamping.

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