Auxiliary device for bridge load test detection

Abstract

The utility model discloses a bridge load test detection's auxiliary device, including support base station and auxiliary support plate, the upper end surface of auxiliary support plate is provided with fixed assembly, and the lower end surface of support base station is provided with auxiliary positioning assembly, through the rotation of carousel to first two -way threaded rod is carried out positive rotation, can make first two -way threaded rod through first mobile block drive first fixed clamping plate and second fixed clamping plate synchronous inboard movement corresponding stress detector body carries out horizontal clamping fixed, through the rotation of cap to second two -way threaded rod is carried out positive rotation, can make second two -way threaded rod through second mobile block drive the synchronous inboard movement of the side baffle of two sides before and after corresponding stress detector body carries out vertical clamping fixed, through the control electric push rod drives the support disc to drop, can make support disc drive first extension plate and second extension plate drop together and with the ground below contact, at this time, multiple anti -skid sharp head will insert into the land, so as to carry out auxiliary support positioning to support base station.

Description

Technical Field

[0001] This utility model relates to the field of bridge inspection technology, and in particular, to an auxiliary device for bridge load testing. Background Technology

[0002] During the load testing of bridges, stress testing instruments are required. In the process of using stress testing instruments, corresponding auxiliary devices are needed to support and fix the stress testing instruments to ensure their stability.

[0003] The announcement number "CN218762332U" provides an auxiliary device for bridge load testing. Through the cooperation of fixed columns, through holes, extension plates, hinge plates, pull plates, plug rods, fixed plates, limit rods and telescopic springs, the device can be fixed, which can effectively avoid errors in the test results caused by the movement of the device when the stress testing instrument body performs stress testing on the bridge.

[0004] However, the above technical solutions and existing technologies have the following drawbacks:

[0005] Although the auxiliary device can support and fix the stress detector body, the clamps can only clamp and fix the left and right ends of the stress detector body, and cannot fix the stress detector body longitudinally. This causes the stress detector body to shift back and forth during actual use, and the fixing range is limited. In addition, the fixing columns in the auxiliary device need to be inserted into the soil one by one by the staff during use, and then pulled out of the soil one by one by the staff afterward. Therefore, the operation steps are cumbersome and the convenience of use is low. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an auxiliary device for bridge load testing, which can stably fix the stress detector body placed on the upper surface of an auxiliary support plate using a fixed component, and provide auxiliary support and positioning for the support base using an auxiliary positioning component.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An auxiliary device for bridge load testing includes a support base. Elevation bases are symmetrically fixed to the left and right sides of the lower end face of the support base. Movable casters are installed at the bottom of the elevation bases. An electro-hydraulic push rod is installed at the center of the upper end face of the support base. An auxiliary support plate is installed at the upper end of the electro-hydraulic push rod. A stress detector body is placed at the center of the upper end face of the auxiliary support plate. A fixing component is provided on the upper end face of the auxiliary support plate to fix the stress detector body placed on the upper end face of the auxiliary support plate. An auxiliary positioning component is provided on the lower end face of the support base to provide auxiliary support and positioning for the support base. The fixing component includes a first fixing clamp, a first bidirectional threaded rod, and a second fixing clamp. The auxiliary positioning assembly includes a side baffle, a second bidirectional threaded rod, a first movable block, and a second movable block. The first and second fixed clamping plates are respectively disposed on the left and right sides of the upper end face of the auxiliary support plate. The upper end face of the auxiliary support plate has a first limiting groove for installing the first bidirectional threaded rod, and the first movable block is threaded to both the left and right sides of the first bidirectional threaded rod. The inner wall of the second fixed clamping plate has a second limiting groove for installing the second bidirectional threaded rod, and the second movable block is threaded to both the front and rear sides of the second bidirectional threaded rod. The right end face of the second movable block is connected to the side baffle. The auxiliary positioning assembly includes a support plate and an electric push rod. The electric push rod is installed at the middle position of the lower end face of the support base, and the support plate is installed at the lower end of the electric push rod.

[0009] Furthermore, the support plate is symmetrically and fixedly connected to the front and rear sides of the annular side, and the support plate is symmetrically and fixedly connected to the left and right sides of the annular side.

[0010] Furthermore, the lower end faces of both the first extension plate and the second extension plate are fixedly connected with multiple anti-slip tips, and the anti-slip tips are tapered in shape.

[0011] Furthermore, a follower rod is provided on the upper surface of the second extension plate, and the follower rod is inserted inside the support base. The electric push rod can extend to a length greater than the distance between the first extension plate, the second extension plate and the ground.

[0012] Furthermore, a first limiting ring is provided on the right side of the annular side of the first bidirectional threaded rod, and the first limiting ring and the first bidirectional threaded rod are an integral structure. A first limiting cover is installed on the right end face of the auxiliary support plate, and the first limiting cover is circular in shape.

[0013] Furthermore, a turntable is provided at the right end of the first bidirectional threaded rod, and a first internal threaded through hole is provided on the upper side of the turntable. A first positioning screw is installed inside the first internal threaded through hole, and the first positioning screw is a wing screw.

[0014] Furthermore, the front end of the second bidirectional threaded rod is provided with a rotating cap, and a second positioning screw is installed on the upper thread inside the rotating cap, and the second positioning screw is a wing screw.

[0015] Furthermore, a second limiting ring is provided on the front side of the annular side of the second bidirectional threaded rod, and a second limiting cover is installed on the front end face of the second fixed clamping plate.

[0016] This utility model has the following beneficial effects:

[0017] 1. By rotating the first bidirectional threaded rod forward using the turntable, the first bidirectional threaded rod can drive the first and second fixed clamping plates to move inward synchronously through the first moving block, thereby clamping and fixing the stress detector body laterally. By rotating the second bidirectional threaded rod forward using the rotating cap, the second bidirectional threaded rod can drive the side baffles on both the front and rear sides to move inward synchronously through the second moving block, thereby clamping and fixing the stress detector body longitudinally. This prevents the stress detector body from shifting laterally or longitudinally during use under pressure, and provides a wide range of fixation.

[0018] 2. By controlling the electric push rod to lower the support plate, the support plate can lower the first extension plate and the second extension plate together and contact the ground below. At this time, multiple anti-slip tips will be inserted into the ground so that the support plate, the first extension plate and the second extension plate can be assisted in supporting and positioning the support base through the electric push rod, so as to prevent the support base from shifting during subsequent use. When the electric push rod is retracted, the electric push rod can drive the first extension plate and the second extension plate to move up through the support plate to release the positioning of the support base. The operation is convenient.

[0019] 3. By tightening the first positioning screw and the second positioning screw respectively, the turntable and the rotating cap can be locked respectively, preventing the turntable and the rotating cap from rotating when accidentally touched, thereby ensuring the clamping stability of the first fixed clamping plate, the second fixed clamping plate and the side baffle.

[0020] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2This is a structural diagram of the fixing component and the auxiliary positioning component in this utility model;

[0024] Figure 3 This is a structural diagram of the auxiliary positioning component descending to position the support base in this utility model;

[0025] Figure 4 This is a partial structural diagram of the fixing component in this utility model;

[0026] Figure 5 This is a structural diagram of the auxiliary positioning component in this utility model;

[0027] Figure 6 This is a structural diagram of the second bidirectional threaded rod, the first moving block, and the side baffle in this utility model.

[0028] Legend:

[0029] 100. Support base; 200. Electro-hydraulic push rod; 300. Auxiliary support plate; 301. First limit stop cover; 400. Fixing assembly; 401. First fixing clamp; 402. First limit groove; 403. First bidirectional threaded rod; 4031. First limit ring; 4032. Turntable; 4033. First positioning screw; 4034. First internal threaded through hole; 404. Second fixing clamp; 4041. Second limit stop cover; 405. Side baffle; 406. Two limiting grooves; 407, second bidirectional threaded rod; 4071, second limiting ring; 4072, second positioning screw; 4073, rotating cap; 408, first moving block; 409, second moving block; 500, stress detector body; 600, auxiliary positioning assembly; 601, follower rod; 602, first extension plate; 603, anti-slip tip; 604, support plate; 605, second extension plate; 606, electric push rod; 700, movable caster; 800, raised base. Detailed Implementation

[0030] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] Please refer to Figures 1 to 6 The auxiliary device for bridge load testing in a preferred embodiment of this utility model includes a support base 100, an electro-hydraulic push rod 200, an auxiliary support plate 300, a stress detector body 500, casters 700, and a raised base 800. The raised base 800 is symmetrically fixed to the left and right sides of the lower end face of the support base 100. The raised base 800 is connected to the support base 100 by welding. The raised base 800 can raise the support base 100 so that the auxiliary positioning component 600 can be installed at the lower end of the support base 100 for use. The raised base 800 is equipped with casters 700 at its bottom, making the device easier and less strenuous to move. An electric hydraulic push rod 200 is installed at the middle position of the upper end face of the support base 100. When working, the electric hydraulic push rod 200 can drive the auxiliary support plate 300 to rise and fall, thereby adjusting the working height of the stress detector body 500. The auxiliary support plate 300 is installed on the upper end of the electric hydraulic push rod 200. The auxiliary support plate 300 can support the stress detector body 500. The middle position of the upper end face of the auxiliary support plate 300 is used to place the stress detector body 500. The stress detector body 500 facilitates construction personnel to test the bridge load. Since the internal detailed structure and working principle of the stress detector body 500 are relatively mature technologies in the existing technology, they will not be described in detail here.

[0035] A fixing component 400 is provided on the upper surface of the auxiliary support plate 300. The fixing component 400 is used to fix the stress detector body 500 placed on the upper surface of the auxiliary support plate 300, so as to prevent the stress detector body 500 from lateral or longitudinal displacement during use under pressure. An auxiliary positioning component 600 is provided on the lower surface of the support base 100. The auxiliary positioning component 600 is used to provide auxiliary support and positioning for the support base 100, so as to prevent displacement of the device during use. A control cabinet is provided on the left side of the upper surface of the support base 100. The output end of the control cabinet is electrically connected to the electric hydraulic push rod 200 and the electric push rod 606 respectively through wires. The input end of the control cabinet is electrically connected to the surrounding power distribution cabinet through wires. The control cabinet allows construction personnel to control the electric hydraulic push rod 200 and the electric push rod 606 to perform extension and retraction actions according to their needs. Since the internal detailed structure and working principle of the control cabinet are relatively mature technologies in the prior art, they will not be described in detail here.

[0036] like Figure 2 , Figure 4 , Figure 6 As shown, the fixing assembly 400 includes a first fixing clamp 401, a first limiting groove 402, a first bidirectional threaded rod 403, a second fixing clamp 404, a side baffle 405, a second limiting groove 406, a second bidirectional threaded rod 407, a first moving block 408, and a second moving block 409. The upper end face of the auxiliary support plate 300 is provided with a first limiting groove 402, which matches the first moving block 408. The first limiting groove 402 can limit the first moving block 408 to prevent it from shifting or shaking during use. The first bidirectional threaded rod 403 is installed inside the first limiting groove 402. The external threads on the left and right sides of the annular side of the first bidirectional threaded rod 403 rotate in opposite directions. When the first bidirectional threaded rod 403 rotates, it can drive the first moving blocks 408 on the left and right sides to move synchronously in opposite directions.

[0037] The first bidirectional threaded rod 403 has two sets of first moving blocks 408 threadedly connected to the left and right sides of its annular side. The two sets of first moving blocks 408 are identical in size and are connected to the first fixed clamping plate 401 and the second fixed clamping plate 404 by welding. The two sets of first moving blocks 408 can support the first fixed clamping plate 401 and the second fixed clamping plate 404 respectively. The first fixed clamping plate 401 is provided on the right side of the upper end face of the auxiliary support plate 300, and the second fixed clamping plate 404 is provided on the left side of the first fixed clamping plate 401. The first fixed clamping plate 401 and the second fixed clamping plate 404 can clamp and fix the left and right ends of the stress detector body 500 placed on the upper end face of the auxiliary support plate 300, so as to prevent the stress detector body 500 from lateral displacement during use under pressure.

[0038] The inner wall of the second fixed clamping plate 404 is provided with a second limiting groove 406, which matches the second moving block 409. The second limiting groove 406 can limit the second moving block 409 to prevent it from shaking or shifting during use. A second bidirectional threaded rod 407 is installed inside the second limiting groove 406. The front external thread on the annular side of the second bidirectional threaded rod 407 rotates in opposite directions to the rear external thread on the annular side. When the second bidirectional threaded rod 407 rotates, it can drive the second moving blocks 409 on both sides to move synchronously and in opposite directions. The annular side of 407 is threaded with two sets of second moving blocks 409 on both the front and rear sides. The two sets of second moving blocks 409 are threaded with the same specifications. The second moving blocks 409 are connected to the side baffles 405 by welding. The second moving blocks 409 can support the side baffles 405. The right end face of the second moving blocks 409 is provided with two sets of side baffles 405, and the two sets of side baffles 405 are the same specifications. The two sets of side baffles 405 can clamp and fix the front and rear ends of the stress detector body 500 placed on the upper end face of the auxiliary support plate 300, so as to prevent the stress detector body 500 from longitudinally displacing during use under pressure.

[0039] A first limiting ring 4031 is provided on the right side of the annular side of the first bidirectional threaded rod 403, and the first limiting ring 4031 and the first bidirectional threaded rod 403 are integrally structured. A first limiting cover 301 is installed on the right end face of the auxiliary support plate 300, and the first limiting cover 301 is circular in shape. The first limiting ring 4031 and the first limiting cover 301 can limit the first bidirectional threaded rod 403 to prevent displacement and shaking of the first bidirectional threaded rod 403 during rotation. A turntable 4032 is provided on the right end of the first bidirectional threaded rod 403. 2 is connected to the first bidirectional threaded rod 403 by welding. The turntable 4032 allows construction personnel to rotate the first bidirectional threaded rod 403 by hand. The upper side of the turntable 4032 has a first internal threaded through hole 4034. The first internal threaded through hole 4034 has a first positioning screw 4033 installed inside the thread. The first internal threaded through hole 4034 and the first positioning screw 4033 can lock the turntable 4032. The first positioning screw 4033 is a wing screw, which allows construction personnel to tighten or loosen it by hand.

[0040] like Figure 6 As shown, a rotating cap 4073 is provided at the front end of the second bidirectional threaded rod 407. The rotating cap 4073 is connected to the second bidirectional threaded rod 407 by welding. The rotating cap 4073 allows construction personnel to rotate the second bidirectional threaded rod 407 by hand. A second positioning screw 4072 is installed on the upper thread inside the rotating cap 4073, and a second internal threaded through hole is opened on the upper inside of the rotating cap 4073. Figure 6 (As shown in the drawing), and the second internal threaded through hole matches the second positioning screw 4072. The second internal threaded through hole and the second positioning screw 4072 can lock the rotating cap 4073. The second positioning screw 4072 is a wing screw, which makes it easy for construction personnel to tighten or loosen it by hand. The second bidirectional threaded rod 407 has a second limiting ring 4071 on the front side of the annular side. The second limiting ring 4071 and the second bidirectional threaded rod 407 are an integral structure. The front end face of the second fixing plate 404 is equipped with a second limiting cover 4041. The second limiting cover 4041 is circular in shape. The second limiting ring 4071 and the second limiting cover 4041 can limit the second bidirectional threaded rod 407 to prevent the second bidirectional threaded rod 407 from shifting or shaking during use.

[0041] In a further embodiment of this utility model, such as Figure 5As shown, the auxiliary positioning component 600 includes a support plate 604 and an electric push rod 606. The electric push rod 606 is installed at the middle of the lower end face of the support base 100. The electric push rod 606 can extend to a length greater than the distance between the first extension plate 602 and the second extension plate 605 and the ground. When working, the electric push rod 606 can drive the support plate 604 to rise and fall. The support plate 604 is installed at the lower end of the electric push rod 606. The support plate 604 is connected to the first extension plate 602 and the second extension plate 605 by welding. The support plate 604 can support the first extension plate 602 and the second extension plate 605. The first extension plate 602 is symmetrically fixedly connected to the front and rear sides of the annular side of the support plate 604. The second extension plate 605 is symmetrically fixedly connected to the left and right sides of the annular side of the support plate 604. The first extension plate 602 and the second extension plate 605 can increase the support range of the support plate 604 so that the support plate 604 can stably support and position the support base 100 through the electric push rod 606.

[0042] Multiple anti-slip tips 603 are fixedly connected to the lower end faces of the first extension plate 602 and the second extension plate 605. The anti-slip tips 603 are conical in shape and are connected to the first extension plate 602 and the second extension plate 605 by welding. The conical shape of the anti-slip tips 603 improves the anti-slip properties of the lower end faces of the first extension plate 602 and the second extension plate 605. A follower rod 601 is provided on the upper end face of the second extension plate 605 and is inserted inside the support base 100. The bottom of the follower rod 601 is connected to the upper end face of the second extension plate 605 by welding. The follower rod 601 can limit the movement of the second extension plate 605 and prevent the second extension plate 605 from shaking or rotating axially during lifting and lowering.

[0043] By controlling the electric push rod 606 to drive the support plate 604 to descend, the support plate 604 can drive the first extension plate 602 and the second extension plate 605 to descend together and contact the ground below. At this time, multiple anti-slip tips 603 will be inserted into the ground so that the support plate 604, the first extension plate 602 and the second extension plate 605 can provide auxiliary support and positioning for the support base 100 through the electric push rod 606, so as to prevent the support base 100 from shifting during subsequent use, thereby ensuring the support stability of the support base 100.

[0044] Working principle: Before using the stress detector body 500, the construction personnel first move the device to the required position, and then place the stress detector body 500 on the upper end of the auxiliary support plate 300. After placement, the first bidirectional threaded rod 403 is rotated clockwise by the turntable 4032, causing the first bidirectional threaded rod 403 to drive the first fixed clamping plate 401 and the second fixed clamping plate 404 to move inward and approach the left and right sides of the stress detector body 500 simultaneously through the first moving block 408. During this process, before the first fixed clamping plate 401 and the second fixed clamping plate 404 clamp and fix the stress detector body 500, the second bidirectional threaded rod 407 is rotated clockwise by the rotating cap 4073, which allows the second bidirectional threaded rod 407 to... The second moving block 409 drives the side baffles 405 on both sides to move inward synchronously to clamp and fix the front and rear end faces of the stress detector body 500. After clamping and fixing, the first bidirectional threaded rod 403 is rotated forward so that the first fixed clamping plate 401 and the second fixed clamping plate 404 clamp and fix the left and right end faces of the stress detector body 500, thereby preventing the stress detector body 500 from lateral or longitudinal displacement and shaking during subsequent use, thus ensuring the stability of the stress detector body 500. After the stress detector body 500 is clamped and fixed, the first positioning screw 4033 and the second positioning screw 4072 are tightened respectively to prevent the turntable 4032 and the rotating cap 4073 from rotating again.

[0045] After the support platform 100 is moved to the required position, the control cabinet is first electrically connected to the surrounding power distribution cabinet. Then, the electric push rod 606 is extended, causing the support plate 604 to descend. The first extension plate 602 and the second extension plate 605 will descend along with the support plate 604 until the lower surfaces of the support plate 604, the first extension plate 602, and the second extension plate 605 are in contact with the ground. At this point, multiple anti-slip tips 603 will be inserted into the ground so that the support plate 604, the first extension plate 602, and the second extension plate 605 can be used by the electric push rod 606 to provide auxiliary support and positioning for the support platform 100, preventing displacement of the support platform 100 during subsequent use, thereby ensuring the stability of the support platform. The stability of the support of platform 100 is ensured. During this process, the follower rod 601 moves with the second extension plate 605 to limit its movement and prevent the second extension plate 605 from swaying during lifting and lowering. Then, the construction personnel control the extension and retraction of the electric hydraulic push rod 200, which enables the auxiliary support plate 300 to drive the stress detector body 500 to rise and fall to adjust its operating height. After the bridge load test is completed with the help of the stress detector body 500, the construction personnel first control the electric push rod 606 to retract, so that the support plate 604 drives the first extension plate 602 and the second extension plate 605 to rise together to the initial position. Then, the control cabinet is disconnected from the surrounding power distribution cabinet. At this time, the device can be moved again to the next location.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An auxiliary device for bridge load testing, comprising a support base (100), wherein raised bases (800) are symmetrically fixedly connected to the left and right sides of the lower end face of the support base (100), and movable casters (700) are installed at the bottom of the raised bases (800); an electric hydraulic push rod (200) is installed at the middle position of the upper end face of the support base (100), and an auxiliary support plate (300) is installed at the upper end of the electric hydraulic push rod (200); the middle position of the upper end face of the auxiliary support plate (300) is used to place the stress detector body (500), characterized in that: The upper end face of the auxiliary support plate (300) is provided with a fixing component (400), and the fixing component (400) is used to fix the stress detector body (500) placed on the upper end face of the auxiliary support plate (300). The lower end face of the support base (100) is provided with an auxiliary positioning component (600), and the auxiliary positioning component (600) is used to provide auxiliary support and positioning for the support base (100). The fixing component (400) includes a first fixing clamp (401), a first bidirectional threaded rod (403), a second fixing clamp (404), a side baffle (405), a second bidirectional threaded rod (407), a first moving block (408), and a second moving block (409). The first fixing clamp (401) and the second fixing clamp (404) are respectively disposed on the left and right sides of the upper end face of the auxiliary support plate (300). The upper end face of the auxiliary support plate (300) is provided with a first limiting groove (402) for installing the first bidirectional threaded rod (403). The first moving block (408) is threadedly connected to both the left and right sides of the first bidirectional threaded rod (403). The inner wall of the second fixing clamp (404) is provided with a second limiting groove (406) for installing the second bidirectional threaded rod (407). The second moving block (409) is threadedly connected to both the front and rear sides of the second bidirectional threaded rod (407). The right end face of the second moving block (409) is connected to the side baffle (405). The auxiliary positioning component (600) includes a support plate (604) and an electric push rod (606). The electric push rod (606) is installed at the middle position of the lower end face of the support base (100), and the support plate (604) is installed at the lower end of the electric push rod (606).

2. The auxiliary device for bridge load testing according to claim 1, characterized in that, The support plate (604) has a first extension plate (602) symmetrically fixedly connected to the front and rear sides of its annular side, and a second extension plate (605) symmetrically fixedly connected to the left and right sides of its annular side.

3. The auxiliary device for bridge load testing according to claim 2, characterized in that, The lower end faces of the first extension plate (602) and the second extension plate (605) are each fixedly connected with a plurality of anti-slip tips (603), and the anti-slip tips (603) are tapered.

4. The auxiliary device for bridge load testing according to claim 2, characterized in that, The upper end face of the second extension plate (605) is provided with a follower rod (601), and the follower rod (601) is inserted inside the support base (100). The electric push rod (606) can extend to a length greater than the distance between the first extension plate (602) and the second extension plate (605) and the ground.

5. The auxiliary device for bridge load testing according to claim 1, characterized in that, The first bidirectional threaded rod (403) has a first limiting ring (4031) on the right side of its annular side, and the first limiting ring (4031) and the first bidirectional threaded rod (403) are an integral structure. The auxiliary support plate (300) has a first limiting cover (301) installed on its right end face, and the first limiting cover (301) is circular in shape.

6. The auxiliary device for bridge load testing according to claim 1, characterized in that, The right end of the first bidirectional threaded rod (403) is provided with a turntable (4032). The upper side of the turntable (4032) is provided with a first internal threaded through hole (4034). A first positioning screw (4033) is installed inside the first internal threaded through hole (4034), and the first positioning screw (4033) is a wing screw.

7. The auxiliary device for bridge load testing according to claim 1, characterized in that, The second bidirectional threaded rod (407) has a rotating cap (4073) at its front end. The rotating cap (4073) has a second positioning screw (4072) installed on its upper internal thread. The second positioning screw (4072) is a wing screw.

8. The auxiliary device for bridge load testing according to claim 1, characterized in that, The second bidirectional threaded rod (407) has a second limiting ring (4071) on the front side of its annular side, and the second fixed clamp (404) has a second limiting cover (4041) installed on its front end face.

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