Convex building structure load test device

Abstract

The utility model relates to a load test device for a convex building structure. The load test device comprises a first bearing rope connected with a convex part of a building; the bottom of the first bearing rope is connected with a driving device; a load limiting device for preventing overload in the test process is connected below the driving device; a counterweight assembly is connected below the load limiting device; an automatic leveling device is arranged at the bottom of the counterweight assembly; the driving device lifts the counterweight assembly through displacement in the vertical direction, and under the action of the automatic leveling device, the first bearing rope can apply loads to the outer protruding part of the building in the plumb bob direction. According to the utility model, damage to a test object caused by overload is avoided through the load limiting device; the counter weight assembly can conveniently adjust the magnitude of the applied load according to requirements; and the automatic plumb bob of the bearing rope can be automatically adjusted by utilizing the automatic leveling device, so that the loading stability of the load is ensured, and the detection accuracy of the test device is improved.

Description

Technical Field

[0001] The utility model relates to the field of glass curtain wall detection, in particular to a load test device and a monitoring system for convex building structures. Background Art

[0002] The floor slab has a large working surface, and there is space for stacking loads on the floor. There is also a transportation hub space near the stacking area, which is convenient for conducting load tests on the floor. For structures such as billboards and awnings, the horizontal plane at the top of the structure is narrow, and the available working surface is limited. If a load test is to be carried out, it is necessary to set up a working platform or lifting equipment such as a crane at a high altitude, which is very difficult. Therefore, the evaluation of the bearing performance of such structures mainly focuses on detecting the construction quality of load-bearing steel members such as billboards and awnings, and fails to comprehensively reflect the bearing performance of the structure. The connection parts between structures such as billboards and awnings and the main structure often adopt post-anchoring connection methods. It is difficult to detect the quality of post-anchoring connectors in existing structures, and this node is also the main cause of accidental falling of structures such as billboards and awnings. Therefore, there is an urgent need for a test system that can conduct load tests on existing structures such as billboards and awnings and comprehensively evaluate their bearing performance. Summary of the Utility Model

[0003] In order to solve the above problems of the prior art, the utility model provides a load test device for convex building structures.

[0004] To achieve the above object, the main technical solutions adopted by the utility model include:

[0005] A load test device for convex building structures, including a first load-bearing rope connected to the convex part of the building; a driving device is connected to the bottom of the first load-bearing rope; a load-limiting device for preventing overload during the test is connected below the driving device; a counterweight assembly is connected below the load-limiting device; an automatic leveling device is provided at the bottom of the counterweight assembly; the driving device lifts the counterweight assembly through displacement in the vertical direction and under the action of the automatic leveling device, the first load-bearing rope can apply a load to the convex part of the building in the plumb direction.

[0006] Further, the driving device includes a motor; the motor drives the movement of a lead screw through a worm and worm gear assembly; a hollow rod is externally fitted to the lead screw; the hollow rod moves along the axial direction of the lead screw under the rotation drive of the lead screw; the top of the lead screw is connected to the first load-bearing rope; the bottom of the hollow rod is connected to the load-limiting device.

[0007] Further, an inclination sensor is connected to the outside of the hollow rod; the top of the lead screw is connected to the load-bearing rope through a lifting ring.

[0008] Further, the load limiting device includes a main body; a first channel is provided in the middle of the main body; a release rod partially located in the first channel is provided in the first channel; the top end of the release rod is a slidable part located in the first channel, and the bottom end extends out of the main body and is connected to a counterweight assembly; several sliders are provided on the lower side of the slidable part; the sliders have inclined surfaces that cooperate with the slidable part; one end of the slider away from the slidable part abuts against the bottom of the arm rod; several pin holes are provided on the arm rod in the vertical direction; a pin is provided in one of the pin holes; the end of the pin is in limit cooperation with the main body; a return spring is connected to the top of the arm rod.

[0009] Further, the slidable part is spherical or frustum-shaped; a release rod return groove communicating with the first channel is provided on the side of the main body; the release rod return groove includes a wide groove at the top and a narrow groove at the bottom; the width of the narrow groove is smaller than the width of the slidable part; the height of the narrow groove is greater than the height of the slidable part to prevent the slidable part from detaching from the wide groove.

[0010] Further, the counterweight assembly includes a water injection port provided at the top and a drain port provided on the side; the counterweight assembly has a flat end face to facilitate stacking; the counterweight assembly is placed on a bracket; several lifting lugs are provided on the symmetric two sides of the bracket; the lifting lugs are connected to a conversion rod through a third load-bearing rope.

[0011] Further, a screw is connected to the lifting lug; the screw is connected to the conversion rod through a third load-bearing rope; the conversion rod is connected to the load limiting device through a second load-bearing rope.

[0012] Further, the automatic leveling device includes a fixed disk provided at the bottom; several top pipes evenly distributed are provided on the top of the fixed disk; the top pipes are connected by a communicating pipe; a first-level sliding disk is provided above the top pipes; several first-level sliding rods are evenly spaced in the first-level sliding disk; a second-level sliding disk is provided at the top of the first-level sliding rod; several second-level sliding rods are evenly spaced in the second-level sliding disk; the axial direction of the first-level sliding rod is perpendicular to the axial direction of the second-level sliding rod; the counterweight assembly is connected to the second-level sliding rod; the top pipe includes an outer pipe and an inner pipe provided in the middle of the outer pipe and extending out of the outer pipe; a sealing ring is provided at the connection of the outer pipe and the inner pipe; a liquid is provided in the internal space formed by the outer pipe and the inner pipe and in the communicating pipe to balance the loads borne by each inner pipe.

[0013] Further, the fixed disk is square, and a limit telescopic rod is provided at the middle of each of the four sides of the fixed disk.

[0014] Further, it further includes a fixed frame provided on one side of the test device; a camera facing the post-anchoring point protruding outside the building is provided on the top of the fixed frame; the motor includes a motor controller; the motor controller is connected with a wireless transmission module.

[0015] The beneficial effects of the present utility model are as follows: The overload protection device can avoid the damage to the test object caused by overloading; the counterweight assembly can conveniently adjust the magnitude of the applied load according to requirements; the automatic leveling device can automatically adjust the load-bearing rope and the plumb bob to ensure the stability of the load application, and at the same time improve the accuracy of the test device detection. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of the test device of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the driving device of the present utility model;

[0019] Figure 3 is a front view of the structural diagram of the overload protection device of the present utility model;

[0020] Figure 4 is a schematic internal structural diagram of the overload protection device of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the counterweight assembly of the present utility model;

[0022] Figure 6 is a schematic structural diagram of the automatic leveling device of the present utility model;

[0023] Figure 7 is a schematic diagram of the automatic leveling device arranged on an inclined ground of the present utility model;

[0024] Description of the Reference Numerals:

[0025] 100, building protrusion; 110, canopy support part; 120, glass layer; 200, driving device; 201, first load-bearing rope; 210, motor; 220, worm and worm gear assembly; 230, lead screw; 231, lifting ring; 240, hollow rod; 250, inclination sensor; 300, load limit device; 310, main body part; 320, first channel; 330, release rod; 331, slidable part; 340, slider; 341, inclined plane; 350, arm rod; 351, pin shaft hole; 352, pin shaft; 360, return spring; 370, release rod return slot; 371, wide slot; 372, narrow slot; 400, counterweight assembly; 401, water tank; 410, drain port; 420, bracket; 430, lifting lug; 440, screw; 450, third load-bearing rope; 460, conversion rod; 470, second load-bearing rope; 500, automatic leveling device; 510, fixed disk; 520, top pipe; 521, outer pipe; 522, inner pipe; 523, connecting pipe; 530, first-stage sliding disk; 531, first-stage sliding rod; 540, second-stage sliding disk; 541, second-stage sliding rod; 550, limit telescopic rod; 600, fixing frame; 610, camera. Detailed implementation mode

[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Embodiment:

[0030] As Figure 1-7 shown, an external convex building structure load test device, the external convex building structure generally refers to structures such as billboards and canopies; the connection parts between structures such as billboards and canopies and the main structure often adopt a post-anchoring connection method. It is difficult to detect the quality of post-anchoring connectors in existing structures by this connection method, and this node is also the main reason for the accidental fall of structures such as billboards and canopies. However, the present utility model can conveniently and effectively perform load detection on such structures; specifically, it includes a first load-bearing rope 201 connected to the external convex part 100 of the building; the external convex part 100 of the building is the above-mentioned structures such as billboards and canopies; the first load-bearing rope 201 is usually fixed at a position on the outer edge of the external convex part 100 of the building; refer to Figure 1 which is illustrated by a canopy structure. The canopy structure includes a canopy support part 110 and a glass layer 120 covering it. The glass layer 120 is used to prevent rainwater and let light through; the glass layer 120 is connected to the canopy support part 110; the canopy support part 110 is fixed to a structural column or a wall, usually connected by post-anchoring connectors.

[0031] The bottom of the first load-bearing rope 201 is connected to a driving device 200; a load-limiting device 300 for preventing overload during the test is connected below the driving device 200; a counterweight assembly 400 is connected below the load-limiting device 300; an automatic leveling device 500 is provided at the bottom of the counterweight assembly 400; the driving device 200 lifts the counterweight assembly 400 through displacement in the vertical direction and under the action of the automatic leveling device 500, so that the first load-bearing rope 201 can apply a load to the external convex part 100 of the building in the plumb direction.

[0032] In one embodiment, the driving device 200 includes a motor 210; the motor 210 drives a lead screw 230 to move through a worm and worm gear assembly 220; the lead screw 230 makes a rotational movement under the action of the worm and worm gear assembly 220; a hollow rod 240 is sleeved outside the lead screw 230; the hollow rod 240 cooperates with the lead screw 230; the hollow rod 240 moves axially along the lead screw 230 under the rotational drive of the lead screw 230, so as to be able to lift or lower the counterweight assembly 400; the top of the lead screw 230 is connected to a first load-bearing rope 201; the bottom of the hollow rod 240 is connected to a load-limiting device 300; an inclination sensor 250 is connected outside the hollow rod 240; through the inclination sensor 250, it is possible to remotely monitor whether the first load-bearing rope 201 is in the plumb direction; the top of the lead screw 230 is connected to the first load-bearing rope 201 through a lifting ring 231; the motor 210 includes a motor controller, and the motor controller is connected with a wireless transmission module to transmit test data to a mobile terminal such as a mobile phone, and testers can stay away from the loading device to ensure the safety of personnel during the test process;

[0033] To prevent overloading during the test process, a load-limiting device 300 is provided to avoid damage to the test object caused by overloading. The function of this device is that once the load borne by structures such as awnings exceeds the set test load value, the release rod 330 in the load-limiting device 300 is pulled off from the device, avoiding overloading. The implementation method of this device is that a lever formed by a return spring 360, an arm rod 350, a shaft pin, and a slider 340 forms a top thrust on the slider 340, and this top thrust clamps the ball at the upper end of the release rod 330. When the downward sliding force is large enough, the slider 340 is pushed to the left and right sides, and the release rod 330 slips off. When conducting the test again, the release rod 330 can be reinstalled by reinserting it into the release rod reset groove 370 on the side of the device, which is convenient for resetting. By reserving a plurality of shaft pin holes and adjusting the wedge angle of the slider 340, the clamping force received by the slider 340 can be adjusted, which is convenient for adjusting the release load value of the load-limiting device 300;

[0034] In one embodiment, the load limiting device 300 includes a main body portion 310; a first channel 320 is provided in the middle of the main body portion 310; a release rod 330 partially located in the first channel 320 is provided in the first channel 320; the top of the release rod 330 is a slidable portion 331 provided in the first channel 320, and the bottom extends out of the main body portion 310 and is connected to a counterweight assembly 400; several sliders 340 are provided on the lower side of the slidable portion 331; preferably two sliders 340 are provided, and are respectively arranged on both sides of the slidable portion 331; the slider 340 has an inclined surface 341 that cooperates with the slidable portion 331; when a large tensile force is applied to the bottom of the release rod 330, the slidable portion 331 cooperates with the inclined surface 341, and squeezing the inclined surface 341 will generate a horizontal thrust to push the sliders 340 to both sides. When the tensile force borne by the release rod 330 is overloaded, after the sliders 340 slide away, the release rod 330 will disengage from the first channel 320, achieving the effect of limiting the load size; one end of the slider 340 away from the slidable portion 331 abuts against the bottom of the arm rod 350; several pin holes 351 are provided on the arm rod 350 in the vertical direction; a pin 352 is provided in one of the pin holes 351; the end of the pin 352 is in limit cooperation with the main body portion 310; a return spring 360 is connected to the top of the arm rod 350; in this embodiment, the pin 352 acts as a rotation axis. When the release rod 330 bears a large load and forces the slider 340 to move outward, the arm rod 350 will be pushed to rotate around the pin 352, and the return spring 360 is compressed. After the release rod 330 disengages from the first channel 320, the return spring 360 releases its elastic force, causing the arm rod 350 to reset and push the slider 340 back to its original position; since the pin 352 acts as a rotation axis, the arm rod 350 is equivalent to a lever, and the position where the pin 352 is provided can change the resistance when the arm rod 350 rotates; when the position where the pin 352 is provided is close to the slider 340, the force arm generated when the slider 340 pushes the arm rod 350 to rotate is shorter, and the force arm generated by the return spring 360 acting on the arm rod 350 is longer. When a return spring 360 with a high spring constant is selected, the arm rod 350 also constitutes a force application assembly, which can tightly squeeze the slider 340 inward. When the release rod 330 disengages, it also needs to overcome the force applied by the arm rod 350 on the slider 340. The return spring 360 can be set to be always in a compressed state, and the load limit of the load limiting device 300 can also be directly determined by adjusting the position of the pin 352;

[0035] In one embodiment, the slidable portion 331 is spherical or truncated cone-shaped; a shedding rod reset groove 370 connected to the first channel 320 is provided on the side of the main body 310; the shedding rod reset groove 370 includes a wide groove 371 at the top and a narrow groove 372 at the bottom; the width of the narrow groove 372 is smaller than the width of the slidable portion 331; the height of the narrow groove 372 is greater than the height of the slidable portion 331 to prevent the slidable portion 331 from detaching from the wide groove 371; by providing the shedding rod reset groove 370, the shedding rod 330 can be easily reinstalled;

[0036] In one embodiment, the counterweight assembly 400 includes a plurality of water tanks 401 disposed on a bracket 420; the water tanks 401 include a water inlet (not shown) disposed on the top and a drain outlet 410 disposed on the side; the water tanks 401 have flat end surfaces for convenient stacking, thereby adjusting the size of the applied load; the water tanks 401 are arranged as counterweights for load tests, which facilitates the transportation and installation of the counterweight device, and multiple water tanks 401 can be stacked to facilitate the increase of counterweights; a plurality of lifting ears 430 are provided on the symmetrical sides of the bracket 420; the lifting ears 430 are connected to the conversion rod 460 through the third load-bearing rope 450; the conversion rod 460 is used to The third load-bearing rope 450 will not squeeze the water tank 401 when subjected to force; the screw 440 is connected to the lifting eye 430; the screw 440 is connected to the conversion rod 460 through the third load-bearing rope 450; the conversion rod 460 is connected to the load-limiting device 300 through the second load-bearing rope 470; a bracket 420 is arranged at the lower part of the water tank 401, and the bracket 420 can prevent the water tank 401 from being directly subjected to the extrusion force of the load-bearing rope and being damaged and deformed during the test process; in one embodiment, the lower part of the load-bearing rope is connected to the lifting eye 430 on the bracket 420, and the upper part of the load-bearing rope is connected to the conversion rod 460, so as to prevent the upper part of the load-bearing rope from gathering at one lifting point and squeezing the water tank 401;

[0037] In one embodiment, the automatic leveling device 500 includes a fixed disk 510 disposed at the bottom; a plurality of uniformly distributed top pipes 520 are provided on the top of the fixed disk 510; the top pipes 520 are connected by a connecting pipe 523; above the top pipes 520 is provided a first-level sliding disk 530; a plurality of first-level sliding rods 531 are uniformly spaced in the first-level sliding disk 530; at the top of the first-level sliding rods 531 is provided a second-level sliding disk 540; a plurality of second-level sliding rods 541 are uniformly spaced in the second-level sliding disk 540; the axial direction of the first-level sliding rods 531 is perpendicular to the axial direction of the second-level sliding rods 541; the counterweight assembly 400 is connected to the second-level sliding rods 541; the top pipe 520 includes an outer pipe 521 and an inner pipe 522 disposed in the middle of the outer pipe 521 and extending out of the outer pipe 521; a sealing ring is provided at the connection between the outer pipe 521 and the inner pipe 522; a liquid is provided in the internal space formed by the outer pipe 521 and the inner pipe 522 and in the connecting pipe 523 to balance the loads borne by each inner pipe 522; in one embodiment, the fixed disk 510 is square, and a limit telescopic rod 550 is respectively provided at the middle of each of the four sides of the fixed disk 510; further, the device of the present utility model further includes a fixed frame 600 disposed on one side of the test device; a camera 610 is provided at the top of the fixed frame 600 and is directed at the rear anchor point of the building convex portion 100.

[0038] The lower part of the automatic leveling device 500 is fixed around the fixed disk 510 by a plurality of top pipes 520. The distribution of the positions of the top pipes 520 makes the loads they receive from the first-level sliding disk 530 the same. A connecting pipe 523 is provided between the top pipes 520, and the liquids inside the top pipes 520 are interconnected. The top pipe 520 is composed of an outer pipe 521 and an inner pipe 522, and a sealing ring is provided between the two to restrict the flow of liquid between the inside of the top pipe 520 and the connecting pipe 523. The first-level sliding disk 530 is placed above the top pipes 520. When the fixed disk 510 is placed on a slope, under the action of the gravity load, the first-level sliding disk 530 generates a force F1 on the inner pipe 522 of each top pipe 520. The inner pipe 522 is simultaneously subjected to the force F3 of the outer pipe 521 and the force F2 of the connected liquid. The resultant force of F2 and F3 is equal to F1. The F1 and F3 borne by each top pipe 520 are the same, so F2 is also the same. To ensure that F2 is the same, the liquid levels in the top pipes 520 will also be the same. At this time, the first-level sliding disk 530 is automatically leveled. A limit telescopic rod 550 is respectively provided at the midpoints of the four sides of the fixed disk 510. After the first-level tray is leveled, the telescopic rod is started. When the limit device at the top of the telescopic rod touches the first-level sliding disk 530, it is locked. At this time, the first-level sliding disk 530 is leveled and limited.

[0039] During the test process, it is necessary to ensure that the load-bearing rope is plumb, so that structures such as the awning bear the vertical load. This device can automatically adjust the load-bearing rope to be plumb, initially align the center of the fixed disk 510 with the load-bearing rope, and successively place the first-level sliding disk 530, the second-level sliding disk 540, the bracket 420, the water tank 401 (after placing the water tank 401, inject the water required for the test), and the third load-bearing rope 450 is sleeved on the conversion rod 460, and the conversion rod 460 is then connected to the load-limiting device 300 through the second load-bearing rope 470.

[0040] Start the motor 210 of the driving device 200 and gradually tighten the load-bearing rope. Initially, the load-bearing rope is inclined, and the horizontal component of the tension force of the load-bearing rope will drive the first-level sliding rod 531 of the first-level sliding disk 530 to rotate, causing the center of the water tank 401 to move towards the center of the load-bearing rope.

[0041] The sliding direction of the second-level sliding rod 541 of the second-level sliding disk 540 above the first-level sliding disk 530 is exactly perpendicular to the sliding direction of the first-level sliding rod 531 of the first-level sliding disk 530. Their functions are the same, only the directions are 90 degrees different. Through the rolling action of the sliding rods of the first and second-level sliding disks 540, the center of the water tank 401 is exactly plumb with the load-bearing rope, thus ensuring that structures such as the awning bear the vertical load.

[0042] Set up an observation camera 610. The camera 610 is provided with a bracket with adjustable height, and it is convenient to observe the cracking, deformation, damage, etc. of test components such as the awning through a display screen that is synchronized with the data of the camera 610. The test personnel can avoid the danger of climbing high, and at the same time can stay away from the loading device to ensure the safety of personnel during the test process; in one embodiment, a displacement meter 130 can also be set on the outer edge of the building protrusion 100, and a strain gauge 140 can be set at the connection between the building protrusion 100 and the structural column or wall to record the strain and displacement. The data of the strain gauge 140 and the displacement meter 130 can be synchronized to the display screen through wired or wireless means to conveniently observe the cracking, damage, strain, deformation, etc. of test components such as the awning.

[0043] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. The load test device for the convex building structure is characterized in that: It includes a first load-bearing rope (201) connected to the building protrusion (100); a driving device (200) is connected to the bottom of the first load-bearing rope (201); a load-limiting device (300) for preventing overload during the test is connected below the driving device (200); a counterweight assembly (400) is connected below the load-limiting device (300); an automatic leveling device (500) is provided at the bottom of the counterweight assembly (400); the driving device (200) lifts the counterweight assembly (400) through displacement in the vertical direction and, under the action of the automatic leveling device (500), enables the first load-bearing rope (201) to apply a load to the building protrusion (100) in the plumb direction.

2. The load test device for the convex building structure according to claim 1, wherein: The driving device (200) includes a motor (210); the motor (210) drives a lead screw (230) to move through a worm and worm gear assembly (220); a hollow rod (240) is externally fitted to the lead screw (230); the hollow rod (240) moves along the axial direction of the lead screw (230) under the rotational drive of the lead screw (230); the top of the lead screw (230) is connected to the first load-bearing rope (201); the bottom of the hollow rod (240) is connected to the load-limiting device (300).

3. The load test device for the convex building structure according to claim 2, wherein: An inclination sensor (250) is connected to the outside of the hollow rod (240); the top of the lead screw (230) is connected to the first load-bearing rope (201) through a lifting ring (231).

4. The load test device for the convex building structure according to claim 1, characterized in that: The load-limiting device (300) includes a main body part (310); a first channel (320) is provided in the middle of the main body part (310); a dropping rod (330) with a part located in the first channel (320) is provided in the first channel (320); the top end of the dropping rod (330) is a slidable part (331) located in the first channel (320), and the bottom end extends outside the main body part (310) and is connected to the counterweight assembly (400); several sliders (340) are provided on the lower side of the slidable part (331); the sliders (340) have inclined surfaces (341) that cooperate with the slidable part (331); the end of the slider (340) far from the slidable part (331) abuts against the bottom of the arm rod (350); several pin shaft holes (351) are provided on the arm rod (350) in the vertical direction; a pin shaft (352) is provided in one of the pin shaft holes (351); the end of the pin shaft (352) is in limit cooperation with the main body part (310); a return spring (360) is connected to the top of the arm rod (350).

5. The load test device for the convex building structure according to claim 4, characterized in that: The slidable part (331) is spherical or frustum-shaped; a dropping rod reset groove (370) communicating with the first channel (320) is provided on the side of the main body part (310); the dropping rod reset groove (370) includes a wide groove (371) at the top and a narrow groove (372) at the bottom; the width of the narrow groove (372) is smaller than the width of the slidable part (331); the height of the narrow groove (372) is greater than the height of the slidable part (331) to prevent the slidable part (331) from detaching from the wide groove (371).

6. The load test device for the convex building structure according to claim 1, wherein: The counterweight assembly (400) includes a number of water tanks (401) arranged on a bracket (420); the water tank (401) includes a water injection port provided at the top and a drain port (410) provided on the side; the water tank (401) has a flat end face to facilitate stacking; a number of lifting lugs (430) are provided on the symmetric two sides of the bracket (420); the lifting lugs (430) are connected to a conversion rod (460) through a third load-bearing rope (450).

7. The load test device for the convex building structure according to claim 6, characterized in that: A screw rod (440) is connected to the lifting lug (430); the screw rod (440) is connected to the conversion rod (460) through a third load-bearing rope (450); the conversion rod (460) is connected to a load limiting device (300) through a second load-bearing rope (470).

8. The load test device for the convex building structure according to claim 1, characterized in that: The automatic leveling device (500) includes a fixed disk (510) provided at the bottom; a number of evenly distributed top pipes (520) are provided on the top of the fixed disk (510); the top pipes (520) are connected through a communicating pipe (523); a first-level sliding disk (530) is provided above the top pipes (520); a number of first-level sliding rods (531) are evenly spaced in the first-level sliding disk (530); a second-level sliding disk (540) is provided at the top of the first-level sliding rod (531); a number of second-level sliding rods (541) are evenly spaced in the second-level sliding disk (540); the axial direction of the first-level sliding rod (531) is perpendicular to the axial direction of the second-level sliding rod (541); the counterweight assembly (400) is connected to the second-level sliding rod (541); the top pipe (520) includes an outer pipe (521) and an inner pipe (522) provided in the middle of the outer pipe (521) and extending out of the outer pipe (521); a sealing ring is provided at the connection between the outer pipe (521) and the inner pipe (522); a liquid is provided in the internal space formed by the outer pipe (521) and the inner pipe (522) and in the communicating pipe (523) to balance the loads borne by each inner pipe (522).

9. The load test device for the convex building structure according to claim 8, characterized in that: The fixed disk (510) is square, and a limit telescopic rod (550) is provided at the middle of each of the four sides of the fixed disk (510).

10. The load test device for the convex building structure according to claim 2, characterized in that: It further includes a fixed frame (600) provided on one side of the test device; a camera (610) facing the rear anchor point of the building protrusion (100) is provided on the top of the fixed frame (600); the motor (210) includes a motor controller; the motor controller is connected with a wireless transmission module.

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