CN217424973U - Bridge railing strength testing device - Google Patents

Abstract

The utility model discloses a bridge railing strength test device belongs to bridge railing strength test technical field. The bridge railing strength testing device comprises a bearing assembly and a limiting piece, wherein the limiting piece is arranged on the bearing assembly and used for fixing a railing; the clamping assembly is movably arranged on the bearing assembly so that the clamping assembly can be switched between a clamping position close to the limiting piece and a releasing position far away from the limiting piece; and the striking assembly is detachably connected with the clamping assembly. The utility model discloses a centre gripping subassembly and striking subassembly, the centre gripping subassembly will strike the subassembly clamp and get and release to the take the altitude after, the striking subassembly striking bridge railing that awaits measuring to the condition when simulation bridge railing is strikeed by the impact force in the twinkling of an eye, the test result more has referential nature and authenticity, reduces the potential safety hazard of bridge railing in the in-service use process.

Description

Bridge railing strength testing device

Technical Field

The utility model relates to a bridge railing strength test technical field, in particular to bridge railing strength test device.

Background

The bridge railing is a railing arranged on the bridge. The purpose is to prevent out-of-control vehicles from crossing out of a bridge, and to have the functions of enabling the vehicles not to break through, wear down, cross over the bridge and beautify the bridge building, and the bridge railing must be subjected to intensity spot check detection before being used to judge whether the bridge railing is qualified or not and can be put into use.

In the correlation technique, generally, judge the intensity of bridge railing through hard extrusion, do not simulate the condition when bridge railing is strikeed by the impact force in the twinkling of an eye, lead to the referential of test result and authenticity lower, there is the potential safety hazard in the bridge railing in the in-service use process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bridge railing intensity test device aims at solving the condition when not simulating the bridge railing among the prior art by impact force striking in the twinkling of an eye, leads to the reference of test result and the lower technical problem of authenticity.

In order to achieve the above object, the utility model provides a bridge railing strength testing arrangement, include:

the bearing assembly comprises a limiting piece, the limiting piece is arranged on the bearing assembly, and the limiting piece is used for fixing the handrail;

the clamping assembly is movably arranged on the bearing assembly so as to be switchable between a clamping position close to the limiting piece and a releasing position far away from the limiting piece; and

a strike assembly removably coupled with the clamp assembly.

Optionally, the bearing assembly comprises:

the outer shell is framed on the periphery of the inner shell, and an accommodating space is formed between the outer shell and the inner shell;

the two threaded rods are arranged in the accommodating space and extend along the height direction of the outer shell, and the two threaded rods are spaced and oppositely arranged; and

the clamping assembly is connected with the threaded sleeves.

Optionally, the stopper includes: at least two placing blocks, the placing blocks are connected with the inner shell, and the at least two placing blocks are spaced from each other and are arranged oppositely.

Optionally, the clamping assembly comprises:

the electric telescopic rods and the threaded sleeves are arranged in a one-to-one correspondence mode, and the fixed ends of the electric telescopic rods are connected with the threaded sleeves, wherein the two electric telescopic rods are arranged oppositely; and

the motor, the motor set up in a side surface of shell body, the output of motor with the one end of threaded rod is connected, the motor is used for the drive the threaded rod is rotatory.

Optionally, the impact assembly comprises: the outer wall of the first balancing weight is detachably connected with the movable end of the electric telescopic rod.

Optionally, the impact assembly comprises:

the outer wall of the mounting plate is detachably connected with the movable end of the electric telescopic rod; and

a second weight, the second weight with the mounting plate detachably connects.

Optionally, at least two limiting grooves are formed on the periphery of the mounting plate, the at least two limiting grooves are spaced from each other along the circumferential direction of the mounting plate, the limiting grooves extend along the radial direction of the mounting plate, and the limiting grooves have an open end and a closed end;

the movable end of the electric telescopic rod is provided with connecting blocks, the connecting blocks and the limiting grooves are arranged in a one-to-one correspondence mode, and the connecting blocks are inserted into the limiting grooves at the clamping positions.

Optionally, a through hole is formed in the mounting plate, and the through hole is arranged along the thickness direction of the mounting plate;

the bearing assembly further comprises an upright post, the upright post is arranged in the inner shell, the upright post is inserted in the through hole, and the upright post is in sliding fit with the mounting plate.

Optionally, a mounting groove is formed in one side surface of the mounting plate close to the limiting member, at least two limiting blocks are connected to the inner circumferential wall of the mounting groove, and the at least two limiting blocks are spaced from each other;

the periphery wall of second balancing weight is formed with two at least spacing mouths, spacing mouth with the stopper one-to-one sets up, the second balancing weight install in the mounting groove, wherein, the stopper cartridge in spacing mouthful, just the stopper with spacing mouthful sliding fit.

Optionally, the clamping assembly further comprises:

the sleeve is arranged in the accommodating space, and the outer wall of the sleeve is connected with the inner shell;

the transmission rod is inserted into the sleeve and is rotationally connected with the sleeve, one end of the transmission rod is connected with the threaded rod, the other end of the transmission rod is connected with the output end of the motor, and the transmission rod corresponds to and is adaptive to the arrangement of the threaded rod.

The utility model discloses technical scheme passes through centre gripping subassembly and striking subassembly, and the centre gripping subassembly will strike the subassembly clamp and get to the take the altitude after release, and the striking subassembly strikes the bridge railing that awaits measuring to the condition when simulation bridge railing is struck by the impact force in the twinkling of an eye, the test result more has referential nature and authenticity, reduces the potential safety hazard of bridge railing in the in-service use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the bridge railing strength testing device of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1A;

FIG. 3 is an enlarged view of FIG. 1B;

fig. 4 is a schematic side view of the mounting plate of the present invention.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

In the related art, a bridge railing refers to a railing disposed on a bridge. The purpose is to prevent out-of-control vehicles from crossing out of a bridge, and to have the functions of enabling the vehicles not to break through, wear down, cross over the bridge and beautify the bridge building, and the bridge railing must be subjected to intensity spot check detection before being used to judge whether the bridge railing is qualified or not and can be put into use.

However, when the existing bridge railing detection device is used for detection, the strength of the bridge railing is generally judged through rigid extrusion, and the condition that the bridge is impacted by instant impact force is not simulated, so that the referential and authenticity of a test result are low, and potential safety hazards exist in the actual use process of the bridge railing.

Therefore, the utility model provides a bridge railing intensity testing arrangement uses centre gripping subassembly and striking subassembly, and the centre gripping subassembly will strike the subassembly clamp and get to the certain height after release, and the striking subassembly striking bridge railing that awaits measuring to the condition when the impact force striking in the twinkling of an eye is simulated to the bridge railing, and the test result more has referential nature and authenticity, reduces the potential safety hazard of bridge railing in the in-service use process.

The inventive concept is further elucidated below in connection with some embodiments.

Referring to fig. 1, fig. 1 is a schematic view of the overall structure of the bridge railing strength testing device of the present invention;

in an embodiment of the present invention, as shown in fig. 1, the device for testing strength of bridge railing includes:

the bearing assembly 100 comprises a limiting member 110, the limiting member 110 is disposed on the bearing assembly 100, and the limiting member 110 is used for fixing a rail (not shown);

the clamping assembly 200 is movably arranged on the bearing assembly 100, so that the clamping assembly 200 can be switched between a clamping position close to the limiting member 110 and a releasing position far away from the limiting member 110; and

a striking assembly 300, the striking assembly 300 being detachably coupled to the clamping assembly 200.

The bridge railing to be tested is placed and fixed on the limiting part 110, when the clamping position is close to the limiting part 110, the clamping assembly 200 is detachably connected with the impacting assembly 300, the clamping assembly 200 clamps the impacting assembly 300, after testing is started, the clamping assembly 200 carries the impacting assembly 300 to move to the releasing position far away from the limiting part 110, when the clamping assembly 200 reaches the releasing position, namely the clamping assembly 200 reaches a preset height, connection between the clamping assembly 200 and the impacting assembly 300 is disconnected, the impacting assembly 300 freely falls towards the bridge railing to be tested on the limiting part 110 under the action of self weight, when the impacting assembly 300 impacts the bridge railing to be tested, the impacting assembly 300 is located at the clamping position, the clamping assembly 200 moves towards the direction close to the limiting part 110, and after the clamping assembly 200 is located at the clamping position, the impacting assembly 300 is clamped again.

It should be noted that the railings in this embodiment and other embodiments are bridge railings, that is, bridge guardrails, and specifically, the bridge guardrail refers to a guardrail disposed on a bridge. Its purpose is in order to prevent that the vehicle out of control from crossing outside the bridge, has the function that makes the vehicle can not break through, wear down, cross the bridge and beautify the bridge building.

In one embodiment, the clamping assembly 200 and the striking assembly 300 are located above the limiting member 110 in a vertical direction (a plane parallel to the H-plane in mechanical drawing), i.e., a direction perpendicular to the horizontal plane.

The utility model discloses technical scheme passes through centre gripping subassembly 200 and striking subassembly 300, and centre gripping subassembly 200 will strike subassembly 300 clamp and get to the take the high back release that awaits measuring, striking subassembly 300 striking bridge railing to the simulation bridge railing is by the condition when impact force striking in the twinkling of an eye, and the test result more has referential ability and authenticity, reduces the potential safety hazard of bridge railing in the in-service use process.

Optionally, the load bearing assembly 100 comprises:

an outer housing 120 and an inner housing 130, the outer housing 120 being framed on the outer periphery of the inner housing 130, an accommodating space 140 being formed between the outer housing 120 and the inner housing 130;

two threaded rods 150, the threaded rods 150 are arranged in the accommodating space 140 and extend along the height direction of the outer shell 120, and the two threaded rods 150 are spaced apart from each other and are arranged oppositely; and

two screw sleeves 160, the screw sleeves 160 are arranged corresponding to the screw rods 150 one by one, and the clamping assembly 200 is connected with the screw sleeves 160.

In order to ensure the stability of the clamping assembly 200 during the operation process and improve the structural safety of the device, an accommodating space 140 for installing a threaded rod 150 is formed between the outer shell 120 and the inner shell 130, in the front view direction, the accommodating space 140 can be formed into a concave shape, the side edge of the accommodating space 140 in the height direction of the outer shell 120, namely the vertical direction, is communicated with the inside of the inner shell 130, the threaded rod 150 is arranged at the position where the accommodating space 140 is communicated with the inner shell 130 along the vertical direction, both ends of the threaded rod 150 are rotatably connected with the inner wall of the accommodating space 140, a threaded sleeve 160 is arranged on the threaded rod 150, when the threaded rod 150 rotates, the threaded sleeve 160 reciprocates in the vertical direction, the clamping assembly 200 is arranged on the threaded rod 150 through the threaded sleeve 160, namely the clamping assembly 200 is positioned between two threaded pipes, when the threaded rod 150 rotates, the clamping assembly 200 reciprocates in the vertical direction, the reciprocating motion is controlled by forward or reverse rotation of the threaded rod 150.

Optionally, the limiting member 110 includes: at least two placing blocks connected with the inner case 130, the at least two placing blocks being spaced apart from and disposed opposite to each other.

In order to facilitate connecting the bridge railing to be tested, the limiting part 110 may be set as a placing block, the placing block may be a solid polyhedron, at least two placing blocks are arranged oppositely, so as to erect the bridge railing to be tested in the inner part of the inner casing 130, a buffer space is left between the placing block and the inner bottom surface of the inner casing 130, the buffer space is used for preventing the impact component 300 from impacting the inner bottom surface of the inner casing 130 after impacting the railing to be tested, the inner casing 130 is prevented from being damaged by the impact component 300, and the service life of the inner casing 130 is ensured.

Optionally, the clamping assembly 200 comprises:

the two electric telescopic rods 210 are arranged, the electric telescopic rods 210 correspond to the threaded sleeves 160 one by one, and the fixed ends of the electric telescopic rods 210 are connected with the threaded sleeves 160, wherein the two electric telescopic rods 210 are arranged oppositely; and

and the motor 220, the motor 220 is arranged on one side surface of the outer shell 120, the output end of the motor 220 is connected with one end of the threaded rod 150, and the motor 220 is used for driving the threaded rod 150 to rotate.

The casing of electric telescopic handle 210 is the outer wall connection of stiff end and thread bush 160 promptly, two electric telescopic handle 210's expansion end sets up relatively, when getting striking subassembly 300, two electric telescopic handle 210's expansion end all is close to the periphery lateral wall of striking subassembly 300, with centre gripping striking subassembly 300, get the action back at the completion clamp, motor 220 drive threaded rod 150 rotates, thereby drive the threaded belt and move to the release position of keeping away from locating part 110 with electric telescopic handle 210, two electric telescopic handle 210 that set up relatively make striking subassembly 300 be difficult for dropping at the in-process that removes to the release position.

Specifically, the electric telescopic rod 210 may be an electric push rod. It is understood that those skilled in the art know how to implement the electric putter and will not be described herein.

In an embodiment, optionally, the impact assembly 300 comprises: and a first balancing weight (not shown), an outer wall of which is detachably connected with the movable end of the electric telescopic rod 210.

The axial outer wall of first balancing weight is formed with two at least jacks, two at least jacks evenly distributed in the periphery of first balancing weight, the jack sets up with electric telescopic handle 210's expansion end one-to-one, when centre gripping subassembly 200 presss from both sides and gets striking subassembly 300, electric telescopic handle 210's expansion end inserts the jack and can make electric telescopic handle 210 be connected with first balancing weight, when the release position, electric telescopic handle 210's expansion end shifts out the jack, electric telescopic handle 210 breaks off with first balancing weight.

In an embodiment, optionally, the impact assembly 300 comprises:

the outer wall of the mounting plate 310 is detachably connected with the movable end of the electric telescopic rod 210; and

and a second weight 320, the second weight 320 being detachably connected to the mounting plate 310.

In order to facilitate changing the second balancing weight 320 according to the actual impact strength requirement, the second balancing weight 320 is detachably connected with the mounting plate 310, the mounting plate 310 is detachably connected with the movable end of the electric telescopic rod 210, namely, when the second balancing weight 320 is changed, the second balancing weight 320 is detached from the mounting plate 310 and is changed.

Referring to fig. 1, fig. 3 and fig. 4, fig. 1 is the overall structure schematic diagram of the bridge railing strength testing device of the present invention, fig. 3 is the enlarged structure schematic diagram of fig. 1B, fig. 4 is the side view structure schematic diagram of the mounting plate 310 of the present invention.

Optionally, at least two limiting grooves 311 are formed on the outer circumference of the mounting plate 310, the at least two limiting grooves 311 are spaced apart from each other along the circumferential direction of the mounting plate 310, the limiting grooves 311 extend along the radial direction of the mounting plate 310, and the limiting grooves 311 have an open end and a closed end;

the movable end of the electric telescopic rod 210 is provided with a connecting block 211, the connecting block 211 and the limiting groove 311 are arranged in a one-to-one correspondence manner, and the connecting block 211 is inserted into the limiting groove 311 at a clamping position.

In order to facilitate the expansion end of electric telescopic handle 210 to connect mounting panel 310, electric telescopic handle 210's expansion end is provided with connecting block 211, mounting panel 310's outer wall is formed with two at least spacing grooves 311, connecting block 211 adaptation and with spacing groove 311 one-to-one, connecting block 211 slides in spacing groove 311 under electric telescopic handle 210's drive, namely at clamping position, connecting block 211 is by electric telescopic handle 210's expansion end support in spacing groove 311, in order to accomplish electric telescopic handle 210 and mounting panel 310's being connected, in release position, connecting block 211 is brought out spacing groove 311 by electric telescopic handle 210's expansion end, so that mounting panel 310 deviates from electric telescopic handle 210.

The circumferential direction of the mounting plate 310 refers to the direction of the mounting plate 310 which is sequentially connected end to end along the length and width of the mounting plate; the radial direction of the mounting plate 310 refers to a direction perpendicular to the central axis of the mounting plate 310.

Alternatively, the mounting plate 310 is formed with through holes, which are arranged in the thickness direction of the mounting plate 310;

carrier assembly 100 further includes a stud 170, stud 170 is disposed in inner housing 130, stud 170 is inserted into the through hole, and stud 170 is slidably engaged with mounting plate 310.

In order to prevent the second balance weight 320 from deviating from the impact position set on the rail in the process of free falling, the upright post 170 is arranged in the vertical direction of the inner housing 130, the upright post 170 is arranged in the inner housing 130 and between the two threaded rods 150, a through hole is formed in the thickness direction of the mounting plate 310, and the upright post 170 is inserted into the through hole and is in sliding fit with the through hole.

Optionally, a mounting groove 312 is formed on a side surface of the mounting plate 310 close to the limiting member 110, at least two limiting blocks 313 are connected to an inner peripheral wall of the mounting groove 312, and the at least two limiting blocks 313 are spaced apart from each other;

the outer peripheral wall of the second balancing weight 320 is formed with at least two limiting openings 321, the limiting openings 321 and the limiting blocks 313 are arranged in a one-to-one correspondence manner, the second balancing weight 320 is installed in the installation groove 312, wherein the limiting blocks 313 are inserted into the limiting openings 321, and the limiting blocks 313 are in sliding fit with the limiting openings 321.

In order to facilitate replacement of the second balancing weight 320 with different weights, at least two limit openings 321 are formed in the outer peripheral wall of the second balancing weight 320, the limit openings 321 correspond to the limit blocks 313 in the mounting grooves 312 formed in the mounting plate 310 one by one and are matched with each other, when the second balancing weight 320 needs to be replaced, the second balancing weight 320 is pushed out of the mounting groove 312 along the width direction of the outer shell 120, at the moment, the limit blocks 313 and the limit openings 321 slide relatively, when the limit blocks 313 are pulled out from the limit openings 321, the second balancing weight 320 is separated from the mounting plate 310, the number of the mounting grooves 312 formed in the mounting plate 310 can be at least two, the at least two mounting grooves 312 are uniformly distributed in the periphery of the through holes, so that the structural balance of the mounting plate 310 is ensured, and when the mounting plate 310 is at a release position, the mounting plate 310 is ensured to be carried with the second balancing weight 320 to move in a free falling mode.

Referring to fig. 1 and 2, fig. 1 is the overall structure schematic diagram of the bridge railing strength testing device of the present invention, and fig. 2 is an enlarged structure schematic diagram of fig. 1A.

Optionally, the clamping assembly 200 further comprises:

a sleeve 230, the sleeve 230 being disposed in the accommodating space 140, an outer wall of the sleeve 230 being connected to the inner housing 130;

the transmission rod 240 is inserted into the sleeve 230, the transmission rod 240 is rotatably connected with the sleeve 230, one end of the transmission rod 240 is connected with the threaded rod 150, the other end of the transmission rod 240 is connected with the output end of the motor 220, and the transmission rod 240 corresponds to and is matched with the threaded rod 150.

In order to enable the threaded rod 150 to rotate under the driving of the motor 220, a sleeve 230 is arranged in the accommodating space 140, the outer wall of the sleeve 230 is connected with the inner shell 130 to limit the sleeve 230, a transmission rod 240 is rotatably connected in the sleeve 230, one end of the transmission rod 240 is connected with the output end of the motor 220 through a bevel gear, the other end of the transmission rod 240 is connected with one end of the threaded rod 150 through a bevel gear, during the rotation process of the driving threaded rod 150, the motor 220 drives the transmission rod 240 to rotate in the sleeve 230 and further drives the threaded rod 150 to rotate in the accommodating space 140, so as to drive the threaded sleeve 160 to move between the release position and the clamping position, the threaded rod 150 drives the second balancing weight 320 clamped on the threaded sleeve 160 to ascend or descend, and the height of the second balancing weight 320 is adjusted, so that the second balancing weight 320 falls from different heights to simulate different degrees of impacts, the test result is more comprehensive, the reference value and the authenticity are higher, and the potential safety hazard of the handrail in the actual use process is avoided.

The above is only the optional embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all of which are in the concept of the present invention, the equivalent structure transformation of the content of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims (10)

1. The utility model provides a bridge railing intensity testing arrangement which characterized in that includes:

the bearing assembly comprises a limiting piece, the limiting piece is arranged on the bearing assembly, and the limiting piece is used for fixing the handrail;

the clamping assembly is movably arranged on the bearing assembly so that the clamping assembly can be switched between a clamping position close to the limiting piece and a releasing position far away from the limiting piece; and

a strike assembly removably coupled with the clamp assembly.

2. The bridge railing strength testing device of claim 1, wherein the load bearing assembly includes:

the outer shell is framed on the periphery of the inner shell, and an accommodating space is formed between the outer shell and the inner shell;

the two threaded rods are arranged in the accommodating space and extend along the height direction of the outer shell, and the two threaded rods are spaced and oppositely arranged; and

the clamping assembly is connected with the threaded sleeves.

3. The bridge railing strength testing device according to claim 2, wherein the limiting member comprises: at least two place the piece, place the piece with interior casing coupling, at least two place the piece and separate and relative setting each other.

4. The bridge railing strength testing apparatus of claim 3, wherein the clamping assembly includes:

the electric telescopic rods and the threaded sleeves are arranged in a one-to-one correspondence mode, and the fixed ends of the electric telescopic rods are connected with the threaded sleeves, wherein the two electric telescopic rods are arranged oppositely; and

the motor, the motor set up in a side surface of shell body, the output of motor with the one end of threaded rod is connected, the motor is used for the drive the threaded rod is rotatory.

5. The bridge railing strength testing apparatus of claim 4, wherein the impact assembly comprises: the outer wall of the first balancing weight is detachably connected with the movable end of the electric telescopic rod.

6. The bridge railing strength testing apparatus of claim 4, wherein the impact assembly comprises:

the outer wall of the mounting plate is detachably connected with the movable end of the electric telescopic rod; and

a second weight, the second weight with the mounting plate detachably connects.

7. The bridge railing strength testing device according to claim 6, wherein the mounting plate is formed with at least two limiting grooves on the periphery thereof, the at least two limiting grooves are spaced apart from each other along the circumferential direction of the mounting plate and extend in the radial direction of the mounting plate, and the limiting grooves have an open end and a closed end;

the movable end of the electric telescopic rod is provided with connecting blocks, the connecting blocks and the limiting grooves are arranged in a one-to-one correspondence mode, and the connecting blocks are inserted into the limiting grooves at the clamping positions.

8. The bridge railing strength testing device according to claim 7, wherein the mounting plate is formed with through holes, and the through holes are arranged along the thickness direction of the mounting plate;

the bearing assembly further comprises an upright post, the upright post is arranged on the inner shell, the upright post is inserted into the through hole, and the upright post is in sliding fit with the mounting plate.

9. The bridge railing strength testing device of claim 8, wherein:

a mounting groove is formed in the surface, close to the limiting piece, of one side of the mounting plate, at least two limiting blocks are connected to the inner peripheral wall of the mounting groove, and the at least two limiting blocks are spaced from each other;

the periphery wall of second balancing weight is formed with two at least spacing mouths, spacing mouth with the stopper one-to-one sets up, the second balancing weight install in the mounting groove, wherein, the stopper cartridge in spacing mouthful, just the stopper with spacing mouthful sliding fit.

10. The bridge railing strength testing apparatus of any one of claims 5 to 9, wherein the clamping assembly further comprises:

the sleeve is arranged in the accommodating space, and the outer wall of the sleeve is connected with the inner shell;

the transmission rod is inserted into the sleeve and is rotationally connected with the sleeve, one end of the transmission rod is connected with the threaded rod, the other end of the transmission rod is connected with the output end of the motor, and the transmission rod corresponds to and is adaptive to the arrangement of the threaded rod.

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