CN218927586U

CN218927586U - Detection frame

Info

Publication number: CN218927586U
Application number: CN202320110254.3U
Authority: CN
Inventors: 徐少晨; 王健; 韩卫东; 张训杰; 刘钧天; 刘军
Original assignee: Shanghai Aircraft Manufacturing Co Ltd
Current assignee: Shanghai Aircraft Manufacturing Co Ltd
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2023-04-28
Anticipated expiration: 2033-01-19

Abstract

The utility model relates to the technical field of aircraft panel processing, in particular to a detection frame body. The detection frame body comprises a curved surface wallboard and comprises an arc line edge, the detection frame body comprises a first clamping mechanism and at least two second clamping mechanisms, the arc line edge is arranged in the first clamping mechanism, the first clamping mechanism can jointly clamp the curved surface wallboard from two side surfaces of the curved surface wallboard, the first clamping mechanism and the at least two second clamping mechanisms are distributed along a first direction, the second clamping mechanism can jointly clamp the curved surface wallboard from two side surfaces of the curved surface wallboard, and the two adjacent second clamping mechanisms are detachably connected, so that the detection frame body is suitable for curved surface wallboards with different sizes, the universality is good, and the cost can be greatly reduced.

Description

Detection frame

Technical Field

The utility model relates to the technical field of aircraft panel processing, in particular to a detection frame body.

Background

The curved wall plate is a main structural member for forming the aerodynamic shape of the aircraft, and the aircraft curved wall plate parts are generally irregular curved thin-wall parts. After the curved wall plate is processed, nondestructive detection, rebound resilience detection and the like are needed to ensure that the curved wall plate has no quality problem, so that the influence on later use is avoided.

The detection frame body is used for fixing and assisting in detection of the curved wall plate during detection and storage of the curved wall plate.

The existing detection frame body for storing and assisting in detecting curved wall boards can only be used for placing curved wall boards of a specific model, and the curved wall boards of each size are required to be provided with corresponding detection frame bodies during detection and storage due to the fact that the curved wall boards are numerous in size, so that universality is poor.

Therefore, a detection frame is needed to solve the above problems.

Disclosure of Invention

The utility model aims to provide a detection frame body which can realize storage of curved wall boards with different sizes and detection of auxiliary curved wall boards and has good universality.

In order to achieve the above object, the following technical scheme is provided:

the detection support body for support curved surface wallboard, curved surface wallboard includes pitch arc limit, its characterized in that includes:

the arc line edge is arranged in the first clamping mechanism, and the first clamping mechanism can jointly clamp the curved wall plate from two side surfaces of the curved wall plate;

the first clamping mechanisms and at least two second clamping mechanisms are distributed along the first direction, the second clamping mechanisms can jointly clamp the curved wall plate from two side surfaces of the curved wall plate, and two adjacent second clamping mechanisms are detachably connected.

As a preferred solution, the detection frame body further includes:

and the two adjacent second clamping mechanisms are detachably connected through the fixing piece.

Preferably, the second clamping mechanism includes:

a support frame;

the first pressing component is arranged on the supporting frame and can be abutted against the inner wall of the curved wall plate;

the second pressing component is rotationally connected with the supporting frame and can be abutted with the outer wall of the curved wall plate.

Preferably, the second pressing assembly includes:

the connecting arms at least are connected with the support frame in a rotating way through a first rotating shaft, two adjacent connecting arms are connected in a rotating way through a second rotating shaft, and the extending directions of the first rotating shaft and the second rotating shaft are the same;

the first abutting piece is rotationally connected with the connecting arm at the other free end through a third rotating shaft, and the extending direction of the third rotating shaft is different from that of the first rotating shaft.

Preferably, the first abutment includes:

the supporting part is rotationally connected with the connecting arm through the third rotating shaft;

and the abutting part is arranged on the supporting part and can abut against the outer wall of the curved wall plate.

Preferably, the first pressing component includes:

the support piece is arranged on the support frame;

the second abutting piece is arranged at one end, far away from the supporting frame, of the supporting piece, and the position of the second abutting piece relative to the supporting piece is adjustable.

Preferably, the first clamping mechanism includes:

the bearing piece is arranged on one side of the second clamping mechanism;

the clamping piece is arranged on the bearing piece, a plug-in groove is formed in the clamping piece, and the curved wall plate can be plugged in the plug-in groove.

Preferably, the first clamping mechanism further includes:

the third abutting piece and the fourth abutting piece are arranged on the clamping piece and are oppositely arranged, the third abutting piece can abut against the outer wall of the curved wall plate, and the fourth abutting piece can abut against the inner wall of the curved wall plate.

As a preferred solution, the detection frame body further includes:

the counterweight frame is rotationally connected with the second clamping mechanism, and the second clamping mechanism can rotate 0-90 degrees relative to the counterweight frame.

As a preferred solution, the detection frame body further includes:

the leveling mechanism comprises a leveling piece and supporting feet, wherein the leveling piece extends along the first direction and is in threaded connection with the counterweight frame, and the supporting feet are arranged at one end, away from the counterweight frame, of the leveling piece and can be abutted against the ground.

Compared with the prior art, the utility model has the beneficial effects that:

the detection frame body comprises a curved surface wallboard and comprises an arc line edge, the detection frame body comprises a first clamping mechanism and at least two second clamping mechanisms, the arc line edge is arranged in the first clamping mechanism, the first clamping mechanism can jointly clamp the curved surface wallboard from two side surfaces of the curved surface wallboard, the first clamping mechanism and the at least two second clamping mechanisms are distributed along a first direction, the second clamping mechanism can jointly clamp the curved surface wallboard from two side surfaces of the curved surface wallboard, and the two adjacent second clamping mechanisms are detachably connected, so that the detection frame body is suitable for curved surface wallboards with different sizes, the universality is good, and the cost can be greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic structural diagram of a detection frame provided in an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a second clamping mechanism and a first clamping mechanism according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a first pressing component according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a second pressing component according to an embodiment of the present utility model.

Reference numerals:

100. detecting a frame body; 200. curved wall plate;

10. a first clamping mechanism; 11. a carrier; 12. a clamping piece; 121. a plug-in groove; 13. a third abutment; 14. a fourth abutment;

20. a second clamping mechanism; 21. a support frame; 211. a frame body; 212. a first connector; 2121. a first bar-shaped groove; 213. a first sliding plate; 214. a second connector; 2141. a second bar-shaped groove; 215. a second sliding plate; 22. a first pressing assembly; 221. a support; 222. a second abutment; 23. a second pressing component; 231. a connecting arm; 232. a first abutment; 2321. a support part; 2322. an abutting portion;

30. a counterweight frame;

40. a leveling mechanism; 41. a leveling member; 42. and supporting the feet.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, the terms "upper," "lower," "left," "right," and the like are used for convenience of description and simplicity of operation based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The curved panel 200 is a main structural member forming the aerodynamic shape of the aircraft, and nondestructive testing, rebound resilience testing and the like are required after the curved panel 200 is processed, so that the curved panel 200 is free from quality problems, and further the influence on later use is avoided.

As shown in fig. 1, the present embodiment provides a detection frame 100, the detection frame 100 is used for supporting a curved wall board 200, the detection frame 100 includes a first clamping mechanism 10 and a second clamping mechanism 20, the curved wall board 200 includes an arc edge, the arc edge of the curved wall board 200 is disposed in the first clamping mechanism 10, the first clamping mechanism 10 can jointly clamp the curved wall board 200 from two sides of the curved wall board 200, the first clamping mechanism 10 and the second clamping mechanism 20 are arranged along a first direction, and the second clamping mechanism 20 can jointly clamp the curved wall board 200 from two sides of the curved wall board 200, thereby realizing the fixation of the detection frame 100 to the curved wall board 200, realizing the functions of storage and auxiliary detection of the curved wall board 200, and avoiding the fracture and damage of the curved wall board 200 caused by improper storage.

The existing detection frame body 100 for storing and assisting in detecting the curved wall plates 200 can only be used for placing the curved wall plates 200 of a specific model, and the curved wall plates 200 of each size are required to be provided with the corresponding detection frame body 100 when being detected and stored due to the fact that the curved wall plates 200 are numerous in size, so that the universality is poor.

In order to solve the above-mentioned problems, as shown in fig. 1-2, the detection frame 100 provided in this embodiment includes at least two second clamping mechanisms 20, at least two second clamping mechanisms 20 are arranged along the first direction, two adjacent second clamping mechanisms 20 are detachably connected, the number of second clamping mechanisms 20 can be adaptively selected according to the size of the curved wall plate 200, the effect that the detection frame 100 supports curved wall plates 200 with different sizes is achieved, and the universality is good. In other embodiments, the number of the second clamping mechanisms 20 may be two, three or more, and the second clamping mechanisms may be adaptively adjusted according to the size of the curved wall plate 200, which is good in universality.

As shown in fig. 1 and 2, the detection frame 100 further includes a fixing member (not shown), and the two adjacent second clamping mechanisms 20 are detachably connected by the fixing member, so that the two adjacent second clamping mechanisms 20 can be quickly detached and assembled, which is helpful for improving the efficiency of the detection frame 100 for supporting the curved wall boards 200 with different specifications. Wherein the fixing member may be a screw, and the second clamping mechanism 20 is provided with a threaded hole.

Referring to fig. 1 to 2, the structure of the first clamping mechanism 10 will be described, and as shown in fig. 1 to 2, the first clamping mechanism 10 includes a carrier 11 and a clamping member 12, the carrier 11 is disposed on one side of the second clamping mechanism 20, the clamping member 12 is disposed on the carrier 11, a plugging slot 121 is formed on the clamping member 12, and the curved wall plate 200 can be plugged into the plugging slot 121, so that the curved wall plate 200 can be prevented from sliding down from the first clamping mechanism 10.

As shown in fig. 2, the number of the clamping members 12 is five, and the five clamping members 12 are distributed on the bearing member 11 at intervals, so that the effect of stably supporting the curved wall plate 200 can be further improved, and the curved wall plate 200 can be further prevented from sliding down by the first clamping mechanism 10. In other embodiments, the number of the clamping members 12 may be two, three or more, which is not limited herein.

As shown in fig. 2, the first clamping mechanism 10 further includes a third abutting piece 13 and a fourth abutting piece 14, the third abutting piece 13 and the fourth abutting piece 14 are relatively disposed on the clamping piece 12, the third abutting piece 13 can abut against the outer wall of the curved wall plate 200, the fourth abutting piece 14 can abut against the inner wall of the curved wall plate 200, the curved wall plate 200 can be prevented from shaking in the inserting groove 121, and further the effect of stably supporting the curved wall plate 200 by the detection frame 100 is further improved.

Referring to fig. 2 to 4, the structure of the second clamping mechanism 20 will be described, as shown in fig. 2 to 4, the second clamping mechanism 20 includes a support frame 21, a first pressing component 22 and a second pressing component 23, the first pressing component 22 is disposed on the support frame 21, the first pressing component 22 can be abutted against the inner wall of the curved wall board 200, the second pressing component 23 is rotationally connected with the support frame 21, the second pressing component 23 can be abutted against the outer wall of the curved wall board 200, and thus a better fixing effect of the second clamping mechanism 20 on the curved wall board 200 is achieved, and thus the curved wall board 200 is prevented from toppling over, and damage to the curved wall board 200 is avoided.

As shown in fig. 2 and 3, the supporting frame 21 includes a frame body 211, a first connecting piece 212 and a first sliding plate 213, the first connecting piece 212 is disposed on the frame body 211, the first sliding plate 213 is disposed on the first connecting piece 212, the first pressing component 22 is fixed with the first sliding plate 213, the first connecting piece 212 is provided with a first bar-shaped groove 2121, the first bar-shaped groove 2121 extends along a second direction, the first direction is different from the second direction, the first sliding plate 213 can slide along the first bar-shaped groove 2121 and is locked by a first locking piece, so that the first pressing component 22 can slide along the second direction relative to the frame body 211 and can be locked at any position in the first bar-shaped groove 2121, and the requirement that the first pressing component 22 abuts against the inner wall of the curved wall plate 200 at different positions is met.

As shown in fig. 2 and 3, the first pressing component 22 includes a supporting member 221 and a second abutting member 222, the supporting member 221 is disposed on the supporting frame 21, the second abutting member 222 is disposed at one end of the supporting member 221 away from the supporting frame 21, the position of the second abutting member 222 relative to the supporting member 221 is adjustable, and the distance between the second abutting member 222 and the supporting member 221 can be adjusted according to actual needs, so that the second abutting member 222 can always abut against the inner walls of curved wall panels 200 with different sizes, and the curved wall panels 200 are prevented from tilting towards the supporting frame 21. Specifically, the second abutment 222 is screwed with the supporting member 221, which facilitates quick adjustment of the distance between the second abutment 222 and the supporting member 221.

As shown in fig. 3, the end of the second abutting piece 222 abutting against the inner wall of the curved wall plate 200 is spherical, so that the pressure of the second abutting piece 222 on the curved wall plate 200 can be reduced, thereby preventing the inner wall of the curved wall plate 200 from being left with an indentation and avoiding affecting the appearance quality of the curved wall plate 200.

As shown in fig. 2 and 3, the supporting frame 21 further includes a second connecting member 214 and a second sliding plate 215, the second connecting member 214 is disposed on the frame body 211, the second sliding plate 215 is disposed on the second connecting member 214, the second pressing component 23 is fixed with the second sliding plate 215, the second connecting member 214 is provided with a second bar-shaped groove 2141, the second bar-shaped groove 2141 extends along the first direction, the second sliding plate 215 can slide along the second bar-shaped groove 2141 and is locked by a second locking member, so that the first pressing component 22 slides along the first direction relative to the frame body 211 and can be locked at any position in the second bar-shaped groove 2141, thereby meeting the requirement of the second pressing component 23 for abutting against different positions of the outer wall of the curved wall plate 200.

As shown in fig. 2 and 4, the second pressing component 23 includes two connecting arms 231 and a first abutting part 232, the connecting arm 231 at one free end is rotationally connected with the supporting frame 21 through a first rotating shaft, two adjacent connecting arms 231 are rotationally connected through a second rotating shaft, the extending directions of the first rotating shaft and the second rotating shaft are the same, the connecting arm 231 at the other free end is rotationally connected with the first abutting part 232 through a third rotating shaft, and the extending directions of the third rotating shaft and the first rotating shaft are different. By means of the arrangement, the second abutting component 23 can further meet the requirement of abutting on different positions of the outer wall of the curved wall plate 200. In other embodiments, the number of the connecting arms 231 may be three, four or more, and may be adjusted according to actual needs, which is not limited herein.

As shown in fig. 4, the first abutting piece 232 includes a supporting portion 2321 and an abutting portion 2322, the supporting portion 2321 is rotationally connected with the connecting arm 231 through a third rotating shaft, the abutting portion 2322 is disposed on the supporting portion 2321, the abutting portion 2322 can abut against the outer wall of the curved wall plate 200, a better supporting effect of the abutting portion 2322 on the curved wall plate 200 is achieved, and the curved wall plate 200 is prevented from tilting towards a direction far away from the supporting frame 21.

The abutment 2322 is supported by a flexible material so as to avoid leaving an impression on the outer wall of the curved wall plate 200, avoiding damage to the curved wall plate 200. The abutting portion 2322 may be made of rubber, silica gel, or the like.

As shown in fig. 1 and 2, the inspection rack 100 further includes a weight rack 30, where the weight rack 30 is disposed on a side of the second clamping mechanism 20 away from the first clamping mechanism 10, so as to prevent the second clamping mechanism 20 from turning over in a direction toward the first clamping mechanism 10 when the inspection rack 100 supports the curved wall plate 200.

As shown in fig. 1, the weight frame 30 is rotatably connected to the second clamping mechanism 20, and the second clamping mechanism 20 can rotate 0 ° to 90 ° with respect to the weight frame 30. Through this kind of setting, the installation of curved surface wallboard 200 of being convenient for, when the size of curved surface wallboard 200 is greater than the default, make second fixture 20 rotate relative counter weight frame 30, second fixture 20 is parallel with counter weight frame 30 this moment, after the staff with first support press subassembly 22 and the second support press subassembly 23 butt respectively in the inner wall and the outer wall of curved surface wallboard 200, make second fixture 20 rotate 90 relative counter weight frame 30, second fixture 20 is perpendicular with counter weight frame 30 this moment, carry out nondestructive test and rebound resilience detection etc. of curved surface wallboard 200 afterwards.

As shown in fig. 1, the detection frame body 100 further includes a leveling mechanism 40, where the leveling mechanism 40 includes a leveling member 41 and a supporting leg 42, the leveling member 41 extends along a first direction and is in threaded connection with the counterweight frame 30, and the supporting leg 42 is disposed at an end of the leveling member 41 away from the counterweight frame 30 and can be abutted against the ground. Specifically, as shown in fig. 1, the number of leveling mechanisms 40 is set to nineteen, and the intervals of nineteen leveling mechanisms 40 are provided on the weight frame 30. When the device is in use, if the ground on which the weight frame 30 is placed is uneven, the leveling member 41 at the corresponding position is adjusted so that the weight frame 30 is level with respect to the ground and does not shake, and the effect of the detection frame 100 on stably supporting the curved wall plate 200 is further improved. In other embodiments, the number of leveling mechanisms 40 may be two, three, or more, to enable leveling of the weight rack 30 relative to the ground.

As shown in fig. 1, the cross-sectional area of the supporting leg 42 is larger than that of the leveling member 41 to achieve the effect of reducing the pressure of the weight frame 30 against the ground and stably supporting the weight frame 30.

For easy understanding, the use process of the detection frame 100 will be described with reference to fig. 1 to 4:

1) The balance weight frame 30 is enabled to be horizontal relative to the ground through the leveling mechanism 40, and the second clamping mechanism 20 is parallel relative to the balance weight frame 30;

2) Hoisting the curved wall plate 200 to the detection frame body 100 by using an adsorption tool by using an aerocar, so that the curved wall plate 200 is spliced in the splicing groove 121 of the first clamping mechanism 10;

3) Adjusting the distance between the second abutting pieces 222 and the supporting piece 221, so that each second abutting piece 222 can abut against the inner wall of the curved wall plate 200;

4) The angle of the first abutting piece 232 relative to the connecting arm 231 and the angle of the connecting arm 231 relative to the supporting frame 21 are adjusted, so that the abutting part 2322 of each first abutting piece 232 can abut against the outer wall of the curved wall plate 200;

5) Rotating the second clamping mechanism 20 by 90 degrees relative to the counterweight frame 30 by using the boat truck, and vertically placing the second clamping mechanism 20 relative to the counterweight frame 30 at the moment to perform nondestructive detection, rebound resilience detection and the like;

6) After the detection is completed, the detection bracket and the curved wall plate 200 are stored to a proper position.

Note that in the description of this specification, a description referring to terms "some embodiments", "other embodiments", and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the utility model and the technical principles employed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. The detection support body for support curved surface wallboard (200), curved surface wallboard (200) include the pitch arc limit, its characterized in that includes:

the first clamping mechanism (10) is arranged in the first clamping mechanism (10), and the first clamping mechanism (10) can jointly clamp the curved wall plate (200) from two side surfaces of the curved wall plate (200);

the two curved surface wallboard (200) can be jointly clamped by the second clamping mechanisms (20) from two side surfaces of the curved surface wallboard (200), and two adjacent second clamping mechanisms (20) are detachably connected.

2. The test rack of claim 1, wherein the test rack further comprises:

and the two adjacent second clamping mechanisms (20) are detachably connected through the fixing pieces.

3. The detection frame according to claim 1, characterized in that the second clamping mechanism (20) comprises:

a support (21);

the first pressing component (22) is arranged on the supporting frame (21), and the first pressing component (22) can be abutted against the inner wall of the curved wall plate (200);

the second pressing component (23) is rotationally connected with the supporting frame (21), and the second pressing component (23) can be abutted with the outer wall of the curved wall plate (200).

4. A test frame according to claim 3, wherein the second abutment assembly (23) comprises:

at least two connecting arms (231), wherein the connecting arm (231) at one free end is rotationally connected with the supporting frame (21) through a first rotating shaft, two adjacent connecting arms (231) are rotationally connected through a second rotating shaft, and the extending directions of the first rotating shaft and the second rotating shaft are the same;

the first abutting piece (232) is rotationally connected with the connecting arm (231) at the other free end through a third rotating shaft, and the extending direction of the third rotating shaft is different from that of the first rotating shaft.

5. The detection frame according to claim 4, wherein the first abutment (232) comprises:

a support (2321) rotatably connected to the connection arm (231) via the third rotation shaft;

and an abutting part (2322) provided on the supporting part (2321), wherein the abutting part (2322) can abut against the outer wall of the curved wall plate (200).

6. A test frame according to claim 3, wherein the first abutment assembly (22) comprises:

a support (221) provided on the support frame (21);

the second abutting piece (222) is arranged at one end, far away from the supporting frame (21), of the supporting piece (221), and the position of the second abutting piece (222) relative to the supporting piece (221) is adjustable.

7. The detection frame according to any one of claims 1 to 6, wherein the first clamping mechanism (10) comprises:

a carrier (11) arranged on one side of the second clamping mechanism (20);

the clamping piece (12) is arranged on the bearing piece (11), the clamping piece (12) is provided with a plug-in groove (121), and the curved wall plate (200) can be plugged in the plug-in groove (121).

8. The detection frame according to claim 7, characterized in that the first clamping mechanism (10) further comprises:

the third abutting piece (13) and the fourth abutting piece (14), the third abutting piece (13) and the fourth abutting piece (14) are arranged on the clamping piece (12) and are oppositely arranged, the third abutting piece (13) can be abutted with the outer wall of the curved wall plate (200), and the fourth abutting piece (14) can be abutted with the inner wall of the curved wall plate (200).

9. The detection frame as claimed in any one of claims 1 to 6, wherein the detection frame further comprises:

the counterweight frame (30) is rotationally connected with the second clamping mechanism (20), and the second clamping mechanism (20) can rotate 0-90 degrees relative to the counterweight frame (30).

10. The test rack of claim 9, wherein the test rack further comprises:

the leveling mechanism (40) comprises a leveling piece (41) and supporting legs (42), wherein the leveling piece (41) extends along the first direction and is in threaded connection with the counterweight frame (30), and the supporting legs (42) are arranged at one end, far away from the counterweight frame (30), of the leveling piece (41) and can be abutted against the ground.