Building bridge guardrail lateral stability detection device

Abstract

The utility model belongs to the technical field of bridge guardrail detection, and particularly relates to a building bridge guardrail lateral stability detection device which comprises a bottom plate, a detection assembly and an adjusting assembly, a guardrail is arranged at the top end of a bridge, the detection assembly comprises a first supporting rod and a second supporting rod, and a vertical rod is arranged at the top end of the second supporting rod through a sliding sleeve; the sliding sleeve is provided with a jack; the adjusting assembly comprises an adjusting plate and a lead screw, the bottom end of the lead screw penetrates through the middle of the adjusting plate and is in threaded connection with the adjusting plate, and wedge blocks, guide plates and inner inclined rods are arranged at the two ends of the adjusting plate; a push rod is arranged between the wedge block and the guide plate, one end of the push rod is fixedly connected with the wedge block, and the other end of the push rod sequentially penetrates through the guide plate and the inner inclined rod. The top ends of the inner inclined rods are rotationally connected with expansion plates, storage grooves are formed in the two sides of the top end of the bottom plate, the expansion plates can rotate to the storage grooves, and the contact area of the bottom plate and the rubber plate is increased by arranging the expansion plates so as to prevent the rubber plate from being damaged due to too large pressure intensity.

Description

Technical Field

[0001] This utility model belongs to the field of bridge railing detection technology, specifically relating to a device for detecting the lateral stability of bridge railings. Background Technology

[0002] The existing Chinese patent, with publication number CN211452825U, discloses a reaction device for measuring the horizontal outward bearing capacity of bridge railings. Compared with existing reaction devices, the two ends of the support rod are connected to channel steel sliders that can rotate relative to each other. The channel steel sliders can be connected to the bottom beam and the uprights through high-strength bolts to improve structural stability and strength. In addition, the position of the support point can be adjusted by adjusting the installation position of the sliders at both ends of the support rod, which can adapt to railings of different heights. The structural components are connected by bolts, which can achieve quick assembly and disassembly and is easy to carry.

[0003] The existing technical solutions described above have the following drawbacks: Bridge railings are usually installed on sidewalks, which are typically equipped with rubber walking boards to facilitate pedestrian movement. Placing the aforementioned device on the rubber walking board allows for the testing of the horizontal outward load-bearing capacity of the bridge railing. However, during the testing process, the bottom beam will exert significant pressure on the rubber walking board. If the contact area of ​​the bottom beam is small, the possibility of damage to the rubber walking board will increase. If the contact area of ​​the bottom beam is large, the size of the device will increase, making it inconvenient to transport and store. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting the lateral stability of bridge railings, in order to solve the technical problem of excessive pressure damaging the rubber plate during bridge railing testing, and to increase the contact area between the base plate and the rubber plate to reduce the pressure on the rubber plate.

[0005] To solve the above-mentioned technical problems, this utility model provides a lateral stability detection device for bridge railings, including: a base plate, a detection component, and an adjustment component. The base plate, the detection component, and the adjustment component are all located at the top of the bridge. The detection component is located at the top of the base plate, and the adjustment component is located at both ends of the base plate.

[0006] A guardrail is vertically installed at the top of the bridge, and one end of the base plate passes through the bottom end of the guardrail.

[0007] The detection component includes: a first support rod and a second support rod, wherein the first support rod is perpendicular to the base plate and the bottom end of the first support rod is detachably connected to the base plate;

[0008] The top end of the first support rod is rotatably connected to the bottom end of the second support rod, the second support rod extends in the direction close to the guardrail, and the top end of the second support rod is detachably provided with a vertical pole through a sliding sleeve;

[0009] The second support rod is rotatably connected to the sliding sleeve, which is sleeved on the outside of the upright;

[0010] The upright is installed perpendicular to the bridge, and the bottom end of the upright is detachably connected to the bridge.

[0011] The sliding sleeve is vertically equipped with a jack, which is located between the upright and the guardrail. The piston rod of the jack is equipped with a pressure sensor, and the piston rod is arranged along the direction close to the guardrail.

[0012] A baffle is connected to one end of the bridge near the guardrail, and the top of the baffle is fixedly connected to one end of the base plate.

[0013] The adjustment assembly includes an adjustment plate and a lead screw. The bottom end of the lead screw passes through the middle of the adjustment plate and is threadedly connected to the adjustment plate. Both ends of the adjustment plate are provided with wedges, guide plates, and inner inclined rods.

[0014] The adjusting plate abuts against the wedge; the wedge is inclined, and the top of the wedge extends away from the lead screw;

[0015] The guide plate is located at the end of the wedge block away from the lead screw, and the guide plate is fixedly connected to the base plate;

[0016] A push rod is provided between the wedge and the guide plate. One end of the push rod is fixedly connected to the wedge, and the other end of the push rod passes through the guide plate and the inner inclined rod in sequence.

[0017] An extension plate is rotatably connected to the top of the inner diagonal rod, and the bottom end of the inner diagonal rod is rotatably connected to the bottom end of the base plate.

[0018] The top two sides of the base plate are provided with storage slots, which are matched with the expansion plate, and the expansion plate can be rotated onto the storage slots.

[0019] Furthermore, the inner inclined rod has grooves at both ends and slides on both sides;

[0020] One end of the push rod is provided with a slide rod, which is located on both sides of the push rod. One end of the push rod passes through the slide groove, and the slide rod passes through the slide channel.

[0021] Furthermore, a spring is sleeved on the outer side of the push rod, and the spring is located between the wedge and the guide plate.

[0022] Furthermore, guide rods are provided at both ends of the lead screw, and the guide rods pass through the adjusting plate;

[0023] The bottom end of the adjusting plate is provided with a fixing plate, and the lead screw abuts against the fixing plate;

[0024] The top end of the fixing plate is connected to the bottom end of the guide rod, and the fixing plate is fixedly connected to the base plate.

[0025] Furthermore, an outer inclined rod is provided parallel to the end of the inner inclined rod away from the adjusting plate. The top end of the outer inclined rod is rotatably connected to the extension plate, and the bottom end of the outer inclined rod is rotatably connected to the bottom end of the base plate.

[0026] Furthermore, the top of the base plate is provided with a plurality of first positioning holes, and the bottom of the first support rod is provided with a second positioning hole.

[0027] The first support rod is sequentially threaded to the base plate via the first bolt and the second positioning hole and the first positioning hole.

[0028] Furthermore, a third positioning hole is provided at the bottom end of the upright, and the upright is connected to the base plate by a second bolt in sequence with the third positioning hole and the first positioning hole.

[0029] Furthermore, the side wall of the sliding sleeve is provided with a plurality of second positioning holes, and the side wall of the upright is provided with a plurality of third positioning holes. The sliding sleeve is sequentially threaded to the upright through the second positioning holes and the third positioning holes by a third bolt.

[0030] Furthermore, a rubber plate is provided between the bridge and the base plate, the lower surface of the rubber plate is fixedly connected to the upper surface of the bridge, and the upper surface of the rubber plate is fixedly connected to the lower surface of the guardrail.

[0031] The beneficial effects of this utility model are:

[0032] 1. By setting an adjustment mechanism to adjust the extension plate, rotating the lead screw loosens the adjustment plate and the lead screw, the adjustment plate descends and pushes the wedges at both ends to move horizontally, thereby the wedges push the push rod to move horizontally, and then the push rod pushes the inner inclined rod to rotate. The inner inclined rod drives the extension plate to move outward, which in turn drives the outer inclined rod to rotate. The extension plates on both sides of the base plate unfold, increasing the contact area between the base plate and the rubber plate, thereby reducing the pressure on the rubber plate and preventing damage to the rubber plate.

[0033] 2. By setting up a first support rod and a second support rod, the jack is fixed between the guardrail and the upright. After adjusting the first support rod and the second support rod, the sliding sleeve and the upright are fixed, and the jack is started to begin the inspection. This method is easy to adapt to different types of jacks and environments, and improves the efficiency of bridge inspection.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a lateral stability testing device for bridge railings according to this utility model;

[0037] Figure 2 This is an installation structure diagram of the detection component and base plate of this utility model;

[0038] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0039] Figure 4 This is a structural diagram of the extended plate of this utility model in its unfolded state.

[0040] In the picture:

[0041] 1. Bridge; 11. Guardrail; 12. Rubber sheet;

[0042] 2. Base plate; 21. Storage slot; 22. Extension plate;

[0043] 3. Detection components; 31. First support rod; 32. Second support rod; 321. Sliding sleeve; 33. Vertical pole; 34. Jack; 341. Pressure sensor; 35. Baffle;

[0044] 4. Adjustment assembly; 41. Adjustment plate; 411. Lead screw; 412. Guide rod; 413. Fixing plate; 42. Wedge block; 43. Guide plate; 431. Push rod; 432. Spring; 44. Inner inclined rod; 45. Outer inclined rod. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0046] Example:

[0047] like Figures 1 to 4 As shown, a lateral stability testing device for a bridge railing includes: a base plate 2, a testing component 3, and an adjustment component 4. The base plate 2, the testing component 3, and the adjustment component 4 are all located at the top of the bridge 1. The testing component 3 is located at the top of the base plate 2, and the adjustment component 4 is located at both ends of the base plate 2.

[0048] A guardrail 11 is vertically installed at the top of the bridge 1, and one end of the base plate 2 passes through the bottom end of the guardrail 11. A baffle 35 is connected to the end of the bridge 1 near the guardrail 11, and the top end of the baffle 35 is fixedly connected to one end of the base plate 2. A rubber plate 12 is installed between the bridge 1 and the base plate 2, and the lower surface of the rubber plate 12 is fixedly connected to the upper surface of the bridge 1, and the upper surface of the rubber plate 12 is fixedly connected to the lower surface of the guardrail 11. The base plate 2 is placed horizontally on the rubber plate 12, and the bottom end of the baffle 35 is fixed to the bridge 1, and the top end of the baffle 35 is fixed to the base plate 2, so as to prevent the base plate 2 from sliding under force when the detection component 3 detects the guardrail 11, thus affecting the detection.

[0049] like Figure 2 As shown, the detection component 3 includes: a first support rod 31, a second support rod 32, a vertical rod 33, a jack 34, and a baffle 35. The first support rod 31 is perpendicular to the base plate 2, and the bottom end of the first support rod 31 is detachably connected to the base plate 2. The top end of the first support rod 31 is rotatably connected to the bottom end of the second support rod 32, and the second support rod 32 extends in a direction close to the guardrail 11. The top end of the second support rod 32 is detachably connected to the vertical rod 33 via a sliding sleeve 321, and the second support rod 32 is rotatably connected to the sliding sleeve 321, which is fitted onto the outside of the vertical rod 33. The top end of the base plate 2 has several first positioning holes, and the bottom end of the first support rod 31 has a second positioning hole. The first support rod 31 is threadedly connected to the base plate 2 via first bolts to the second positioning holes and the first positioning holes in sequence.

[0050] It should be noted here that: the first support rod 31 and the second support rod 32 are rotatably connected. Adjusting the angle of the first support rod 31 and the second support rod 32 adjusts the height of the sliding sleeve 321. The height of the sliding sleeve 321 is different for guardrails 11 of different heights and different types of jacks 34. The sliding sleeve 321 is fixed on the upright 33, and the second positioning hole at the bottom of the first support rod 31 is aligned with the first positioning hole on the base plate 2. The first bolt is screwed into the second positioning hole and the first positioning hole in sequence to fix the first support rod 31 on the base plate 2.

[0051] The upright 33 is set perpendicular to the bridge 1, and the bottom end of the upright 33 is detachably connected to the bridge 1. A third positioning hole is opened at the bottom end of the upright 33, and the upright 33 is threaded to the base plate 2 in sequence with the third positioning hole and the first positioning hole by the second bolt. Several second positioning holes are opened on the side wall of the sliding sleeve 321, and several third positioning holes are opened on the side wall of the upright 33. The sliding sleeve 321 is threaded to the upright 33 in sequence with the second positioning hole and the third positioning hole by the third bolt. A jack 34 is vertically set on the sliding sleeve 321. The jack 34 is located between the upright 33 and the guardrail 11. A pressure sensor 341 is set on the piston rod of the jack 34, and the piston rod is set along the direction close to the guardrail 11.

[0052] It should be noted here that: align the third positioning hole at the bottom of the upright 33 with the first positioning hole on the base plate 2, and then screw the second bolt into the third positioning hole and the first positioning hole in sequence to fix the upright 33 onto the base plate 2; the upright 33 is positioned between the guardrail 11 and the second support rod 32, and the second support rod 32 is slidably connected to the upright 33 through the sliding sleeve 321. Place the jack 34 between the guardrail 11 and the second support rod 32. After determining the position of the jack 34, align the second positioning hole on the side wall of the sliding sleeve 321 with the third positioning hole on the side wall of the upright 33, and then screw the third bolt into the second positioning hole and the third positioning hole in sequence to fix the sliding sleeve 321 onto the upright 33, thereby fixing the jack 34 and improving the stability of the jack 34 detection.

[0053] like Figure 3-4 As shown, the adjusting assembly 4 includes: an adjusting plate 41 and a lead screw 411. The bottom end of the lead screw 411 passes through the middle of the adjusting plate 41 and is threadedly connected to the adjusting plate 41. Guide rods 412 are provided at both ends of the lead screw 411, and the guide rods 412 pass through the adjusting plate 41. A fixing plate 413 is provided at the bottom end of the adjusting plate 41, and the lead screw 411 abuts against the fixing plate 413. The top end of the fixing plate 413 is connected to the bottom end of the guide rod 412, and the fixing plate 413 is fixedly connected to the base plate 2. Both ends of the adjusting plate 41 are provided with a wedge 42, a guide plate 43, and an inner inclined rod 44. The adjusting plate 41 abuts against the wedge 42. The wedge 42 is inclined, and the top end of the wedge 42 extends away from the lead screw 411.

[0054] It should be noted here that: the lead screw 411 and the adjusting plate 41 are threadedly connected. When the lead screw 411 is loosened, the adjusting plate 41 descends under the action of the guide rod 412. The adjusting plate 41 slides on the wedge block 42. The wedge block 42 is set to be wider at the top and narrower at the bottom relative to the adjusting plate 41. Therefore, when the adjusting plate 41 slides down, it pushes the wedge block 42 to move parallel to both ends.

[0055] A guide plate 43 is located at the end of the wedge block 42 away from the lead screw 411, and the guide plate 43 is fixedly connected to the base plate 2; a push rod 431 is provided between the wedge block 42 and the guide plate 43, one end of the push rod 431 is fixedly connected to the wedge block 42, and the other end of the push rod 431 passes through the guide plate 43 and the inner inclined rod 44 in sequence; the inner inclined rod 44 has grooves at both ends and slide rails on both sides; a slide rod is provided at one end of the push rod 431, the slide rod is located on both sides of the push rod 431, one end of the push rod 431 passes through the groove, and the slide rod passes through the slide rail.

[0056] It should be noted here that: the adjusting plate 41 slides down to push the wedge block 42 to move to both ends, which in turn pushes the push rod 431 to move horizontally. The push rod 431 pushes the inner inclined rod 44 to rotate outward. The push rod 431 slides in the slide groove, and the slide rod slides in the slide track.

[0057] An extension plate 22 is rotatably connected to the top of the inner inclined rod 44, and the bottom of the inner inclined rod 44 is rotatably connected to the bottom of the base plate 2. Storage slots 21 are provided on both sides of the top of the base plate 2. The storage slots 21 match the extension plate 22, and the extension plate 22 can be rotated onto the storage slots 21. An outer inclined rod 45 is provided parallel to the end of the inner inclined rod 44 away from the adjustment plate 41. The top of the outer inclined rod 45 is rotatably connected to the extension plate 22, and the bottom of the outer inclined rod 45 is rotatably connected to the bottom of the base plate 2. A spring 432 is sleeved on the outside of the push rod 431. The spring 432 is located between the wedge block 42 and the guide plate 43.

[0058] It should be noted here that: the push rod 431 pushes the inner inclined rod 44 to rotate outward, thereby driving the extension plate 22 to move outward. The adjusting plate 41 moves to the bottom end, the extension plate 22 is fully extended, and the bottom end of the extension plate 22 is flush with the bottom end of the base plate 2. The contact area between the base plate 2 and the rubber plate 12 increases. At this time, the detection component 3 is installed on the base plate 2, so that the extension plate 22 and the base plate 2 share the pressure of the device on the rubber plate 12, thus preventing the rubber plate 12 from being damaged under the pressure of the detection component 3.

[0059] The outer inclined rod 45 rotates synchronously with the inner inclined rod 44, improving the connection strength between the extension plate 22 and the base plate 2, and providing power for the rotation of the extension plate 22. During the descent of the adjusting plate 41, the wedge block 42 pushes the push rod 431 through the guide plate 43, and the spring 432 is compressed. After the inspection is completed, in order to facilitate the storage of the extension plate 22 on the storage slot 21, the screw 411 is turned in the opposite direction, the adjusting plate 41 moves vertically upward, the spring 432 rebounds and pushes the wedge block 42 towards the center, the wedge block 42 drives the push rod 431 to move, and then drives the inner inclined rod 44, the extension plate 22 and the outer inclined rod 45 to rotate back, automatically flipping the two extension plates 22 and retrieving them onto the storage slot 21.

[0060] In summary, the base plate 2 is placed on the rubber plate 12, the baffle 35 is fixed to one end of the bridge, one end of the base plate 2 passes through the gap of the guardrail 11 and is fixedly connected to the baffle 35, the first support rod 31 and the upright rod 33 are connected and fixed on the base plate 2, and the jack 34 is placed between the upright rod 33 and the guardrail 11.

[0061] Rotating the lead screw 411 causes the adjusting plate 41 to move vertically downward under the guidance of the guide rod 412. The two ends of the downward-moving adjusting plate 41 slide along the inclined surface of the wedge block 42, simultaneously pushing the wedge block 42 and the push rod 431 to move horizontally away from the lead screw 411. When the push rod 431 moves horizontally along the side wall of the base plate 2, it causes the inner inclined rod 44 to flip. The flipping of the inner inclined rod 44 causes the extension plate 22 to flip, which in turn causes the outer inclined rod 45 to flip synchronously. The parallel inner and outer inclined rods 44 and 45 work together to restrict the extension plate. The flipping path of 22, when the extension plate 22 is flipped to the position of contacting the rubber plate 12, allows the lower surface of the extension plate 22 to fully contact the rubber plate 12, thereby maximizing the contact area of ​​the base plate 2 with the rubber plate 12. After the extension plate 22 contacts the rubber plate 12, the self-locking property of the threaded connection between the adjusting plate 41 and the lead screw 411 prevents the adjusting plate 41 from moving vertically. The adjusting plate 41 restricts the wedge block 42 from moving in the opposite direction, thereby locking the position of the extension plate 22 and allowing the extension plate 22 to share the pressure of the device on the rubber plate 12.

[0062] When jack 34 is activated, the piston rod of jack 34 drives pressure sensor 341 to move horizontally towards guardrail 11. Pressure sensor 341 contacts guardrail 11 and pushes guardrail 11. At the same time, guardrail 11 applies a reaction force in the opposite direction to pressure sensor 341. Pressure sensor 341, subjected to the reaction force, pushes jack 34, upright 33 and base plate 2 away from guardrail 11. Baffle 35 fixes base plate 2. Thus, base plate 2, baffle 35, upright 33 and jack 34 remain stationary. Pressure sensor 341 records the pressure value of guardrail 11.

[0063] The piston rod of the jack 34 drives the pressure sensor 341 to move continuously. When the pressure sensor 341 pushes the guardrail 11 to a predetermined value, if the guardrail 11 does not bend or break plastically, and the connection between the guardrail 11 and the bridge 1 is not loose or broken, then the lateral stability of the guardrail 11 is deemed to be qualified; otherwise, the lateral stability of the guardrail 11 is deemed to be unqualified.

[0064] When the adjusting plate 41 pushes the wedge 42 and push rod 431 to move horizontally away from the lead screw 411, the spring 432 elastically contracts. After the lateral stability test of the bridge railing 11 is completed, the lead screw 411 is turned in the opposite direction, so that the adjusting plate 41 moves vertically upward. The wedge 42 gains space to move closer to the lead screw 411. The spring 432 rebounds and pushes the wedge 42 closer to the lead screw 411. The wedge 42 drives the push rod 431 to move horizontally in sync. The moving push rod 431 drives the inner inclined rod 44 to flip closer to the lead screw 411. Then, after the adjusting plate 41 moves up and resets, the two extension plates 22 are automatically flipped and retracted into the storage slot 21. Without rotating the lead screw 411, the spring 432 restricts the wedge 42 from moving away from the lead screw 411, thus confining the extension plates 22 in the storage slot 21, which facilitates the handling and storage of the device.

[0065] All the devices selected in this application are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0066] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0067] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0068] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for detecting the lateral stability of bridge railings, characterized in that, include: The base plate (2), the detection component (3) and the adjustment component (4) are all located at the top of the bridge (1). The detection component (3) is located at the top of the base plate (2) and the adjustment component (4) is located at both ends of the base plate (2). A guardrail (11) is vertically installed at the top of the bridge (1), and one end of the base plate (2) passes through the bottom end of the guardrail (11). The detection component (3) includes: a first support rod (31) and a second support rod (32), wherein the first support rod (31) is perpendicular to the base plate (2), and the bottom end of the first support rod (31) is detachably connected to the base plate (2); The top end of the first support rod (31) is rotatably connected to the bottom end of the second support rod (32). The second support rod (32) extends in a direction close to the guardrail (11). The top end of the second support rod (32) is detachably provided with a pole (33) through a sliding sleeve (321). The second support rod (32) is rotatably connected to the sliding sleeve (321), and the sliding sleeve (321) is sleeved on the outside of the upright rod (33); The upright (33) is set perpendicular to the bridge (1), and the bottom end of the upright (33) is detached from the bridge (1); The sliding sleeve (321) is vertically provided with a jack (34), the jack (34) is located between the upright (33) and the guardrail (11), the piston rod of the jack (34) is provided with a pressure sensor (341), and the piston rod is arranged in the direction close to the guardrail (11); The bridge (1) has a baffle (35) connected to one end of the guardrail (11), and the top of the baffle (35) is fixedly connected to one end of the base plate (2). The adjustment assembly (4) includes an adjustment plate (41) and a lead screw (411). The bottom end of the lead screw (411) passes through the middle of the adjustment plate (41) and is threadedly connected to the adjustment plate (41). Both ends of the adjustment plate (41) are provided with wedges (42), guide plates (43) and inner inclined rods (44). The adjusting plate (41) abuts against the wedge (42); the wedge (42) is inclined and the top of the wedge (42) extends away from the lead screw (411); The guide plate (43) is located at the end of the wedge (42) away from the lead screw (411), and the guide plate (43) is fixedly connected to the base plate (2); A push rod (431) is provided between the wedge (42) and the guide plate (43). One end of the push rod (431) is fixedly connected to the wedge (42), and the other end of the push rod (431) passes through the guide plate (43) and the inner inclined rod (44) in sequence. The top end of the inner diagonal rod (44) is rotatably connected to an extension plate (22), and the bottom end of the inner diagonal rod (44) is rotatably connected to the bottom end of the base plate (2). The bottom plate (2) has storage slots (21) on both sides of its top end. The storage slots (21) match the expansion plate (22), and the expansion plate (22) can be rotated onto the storage slots (21).

2. The lateral stability testing device for bridge railings as described in claim 1, characterized in that, The inner inclined rod (44) has grooves at both ends and slides on both sides; One end of the push rod (431) is provided with a slide rod, which is located on both sides of the push rod (431). One end of the push rod (431) passes through the slide groove, and the slide rod passes through the slide channel.

3. The lateral stability testing device for bridge railings as described in claim 1, characterized in that, A spring (432) is sleeved on the outside of the push rod (431), and the spring (432) is located between the wedge (42) and the guide plate (43).

4. The lateral stability testing device for bridge railings as described in claim 1, characterized in that, Guide rods (412) are provided at both ends of the lead screw (411), and the guide rods (412) pass through the adjusting plate (41). The bottom end of the adjusting plate (41) is provided with a fixing plate (413), and the lead screw (411) abuts against the fixing plate (413); The top end of the fixing plate (413) is connected to the bottom end of the guide rod (412), and the fixing plate (413) is fixedly connected to the base plate (2).

5. The lateral stability testing device for bridge railings as described in claim 1, characterized in that, An outer inclined rod (45) is provided parallel to the end of the inner inclined rod (44) away from the adjusting plate (41). The top end of the outer inclined rod (45) is rotatably connected to the extension plate (22), and the bottom end of the outer inclined rod (45) is rotatably connected to the bottom end of the base plate (2).

6. The lateral stability testing device for bridge railings as described in claim 1, characterized in that, The top of the base plate (2) is provided with a plurality of first positioning holes, and the bottom of the first support rod (31) is provided with a second positioning hole; The first support rod (31) is connected to the base plate (2) by the first bolt in sequence with the second positioning hole and the first positioning hole.

7. The lateral stability testing device for bridge railings as described in claim 6, characterized in that, The bottom end of the upright (33) is provided with a third positioning hole, and the upright (33) is connected to the base plate (2) by the second bolt in sequence with the third positioning hole and the first positioning hole.

8. The lateral stability testing device for bridge railings as described in claim 7, characterized in that, The side wall of the sliding sleeve (321) is provided with a plurality of second positioning holes, and the side wall of the upright (33) is provided with a plurality of third positioning holes. The sliding sleeve (321) is connected to the upright (33) in sequence with the second positioning holes and the third positioning holes by a third bolt.

9. The lateral stability testing device for bridge railings as described in claim 1, characterized in that, A rubber plate (12) is provided between the bridge (1) and the base plate (2). The lower surface of the rubber plate (12) is fixedly connected to the upper surface of the bridge (1), and the upper surface of the rubber plate (12) is fixedly connected to the lower surface of the guardrail (11).

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