CN214408063U - 8 axle register for easy reference iteration test frocks of auto steering knuckle - Google Patents

Abstract

The utility model relates to an 8 axle way register for easy reference iteration test frocks of auto steering knuckle belongs to experimental frock technical field. In order to solve the defects of the prior art, the 8-axis road spectrum iteration test tool for the automobile steering knuckle is reasonable in structural design, accurate in result and high in efficiency. The test tool comprises a steering knuckle to be detected, wherein a MY load block is installed at the rear of the steering knuckle to be detected, an XYZ load block is installed above the steering knuckle, an XY load block is installed below the XYZ load block, a 7Y load block is installed on a steering arm of the steering knuckle to be detected, a steering arm simulation pin is installed between the steering knuckle to be detected and the XYZ load block, an X-axis test module is installed above the MY load block, on the left side of the XYZ load block and on the right side of the XY load block, a Y-axis test module is installed in the front of the XY load block, in the front of the 7Y load block, in the front of the steering arm simulation pin and in the front of the simulation pin B, and a Z-axis test module is installed above the XYZ load block.

Description

8 axle register for easy reference iteration test frocks of auto steering knuckle

Technical Field

The utility model relates to an experimental frock of automobile steering knuckle, the 8 axle register for easy reference iteration experimental frock of automobile steering knuckle specifically says so belongs to experimental frock technical field.

Background

The steering knuckle is one of main parts on an automobile steering axle, can enable an automobile to stably run and sensitively transmit the running direction, and has the function of bearing the front load of the automobile and supporting and driving a front wheel to rotate around a main pin so as to enable the automobile to steer. In the driving state of the automobile, the automobile is subjected to variable impact load.

The existing verification method of the steering knuckle part mainly comprises CAE software analysis and automobile road test. The analysis result of the CAE software has certain deviation from the actual result, which affects the accuracy of product design and research; although the result of the automobile road test is reliable, the automobile road test has the defects of large consumption of manpower and material resources, long project period, high cost and the like.

Disclosure of Invention

The utility model discloses an it has the deviation just to aim at solving the current software analysis result of knuckle fatigue test before the aluminum alloy, and the way is tried to see the cost big, the experiment cycle is long not enough, provides a structural design reasonable and the result is accurate, 8 axle way register for easy reference iteration test frocks of efficient auto steering.

In order to achieve the above object, the utility model discloses an 8 axle register for easy reference iteration test frocks of auto steering knuckle realizes through following technical scheme:

the utility model provides an 8 axle routes of auto steering festival spectrum iterative test frocks, its special character lies in: comprises a platform 1, a supporting block 2 is fixedly arranged on the platform 1, a knuckle to be detected is fixedly arranged on the supporting block 2, the rear part of the knuckle to be detected is provided with a MY load block 4, the upper part of the knuckle to be detected is provided with an XYZ load block 6 through a simulation pin A5, an XY load block 8 is arranged below the XYZ load block 6 through a simulation pin B7, a 7Y load block 10 is arranged on the steering arm of the knuckle to be detected through a simulation pin C9, a steering arm simulation pin 11 is arranged between the steering knuckle to be detected and the XYZ load block 6, X-axis test modules are arranged above the MY load block 4, on the left side of the XYZ load block 6 and on the right side of the XY load block 8, a Y-axis test module is arranged in front of the XY load block 8, in front of the 7Y load block 10, in front of the steering arm simulation pin 11 and in front of the simulation pin B7, and a Z-axis test module is arranged above the XYZ load block 6;

preferably, a vertical plate 12 is fixedly mounted on the supporting block 2, a bearing 13 perpendicular to the vertical plate 12 is mounted on the vertical plate 12, and the knuckle to be detected is mounted on the bearing 13;

preferably, the X-axis test module, the Y-axis test module and the Z-axis test module all include loading mechanisms, each loading mechanism includes a hydraulic driver 14, two guide rail connecting plates 15 separated by a certain distance are installed at an output end of the hydraulic driver 14, two parallel optical axes 16 are installed between the two guide rail connecting plates 15, two linear bearings 17 are installed on the two optical axes 16 respectively, an end joint bearing U-shaped joint 18 is installed on the guide rail connecting plate 15 far away from the hydraulic driver 14, two joint bearings 19 are installed at the other end of the end joint bearing U-shaped joint 18, a two-force rod 20 is installed between the two joint bearings 19, a support connecting plate a21 is installed on one side of each linear bearing 17, and the other end of the support connecting plate a21 is installed on a support connecting plate B22;

preferably, the hydraulic drive 14 is a 50KN hydraulic drive or a25 KN hydraulic drive;

preferably, the X-axis test module further comprises a support frame a23 and a support frame B24 which are fixedly mounted on the platform 1 and are separated by a certain distance, a support frame C25 is fixedly mounted between the support frame a23 and the support frame B24, a first loading mechanism is mounted between the support frame a23 and the support frame C25, and two second loading mechanisms are mounted between the support frame C25 and the support frame B24 in parallel;

preferably, the hydraulic driver 14 of the first loading mechanism between the support frame a23 and the support frame C25 is fixedly mounted on the support frame a23, the support connecting plate B22 is fixedly mounted on the support frame C25, the hydraulic driver 14 of the second loading mechanism between the support frame C25 and the support frame B24 is fixedly mounted on the support frame B24, and the support connecting plate B22 is fixedly mounted on the support block 2;

preferably, the supporting frame C25 comprises a bottom plate 25-1 fixedly installed on the platform 1, a vertical plate A25-2 is fixedly installed above the bottom plate 25-1, a vertical plate B25-3 perpendicular to the vertical plate A25-2 is fixedly installed near one end of the vertical plate A25-2, and a vertical plate C25-4 parallel to the vertical plate B25-3 is fixedly installed at the other end of the vertical plate A25-2;

preferably, the Y-axis test module further includes a support frame D26 fixedly mounted on the platform 1 and parallel to the support frame a23, an actuator fixing seat a27 and an actuator fixing seat B28 fixedly mounted on the platform 1 and perpendicular to the support frame a23, and a support frame E29 spaced from the actuator fixing seat B28 by a certain distance, a third loading mechanism is fixedly mounted between the support frame D26 and the support frame C25, a fourth loading mechanism is fixedly mounted between the actuator fixing seat B28 and the support frame E29, hydraulic drivers 14 of the third loading mechanism and the fourth loading mechanism are respectively and fixedly mounted on the support frame D26 and the actuator fixing seat B28, a support connecting plate B22 is respectively and fixedly mounted on the support frame C25 and the support frame E29, a triangular equivalent component 30 is mounted at the other end of the joint bearing 19, a second corner of the triangular equivalent component 30 is fixedly mounted on the other side of the support frame C25 or the support frame E29, a joint bearing 19 is installed at the third corner of the triangular equivalent force part 30, a two-force rod 20 is installed on the joint bearing 19, the two-force rod 20 is in contact with a steering arm simulation pin 11 or a simulation pin B7, fifth loading mechanisms are fixedly installed between the actuator fixing seat A27 and the support frame E29 from top to bottom, hydraulic drivers 14 of the two fifth loading mechanisms are fixedly installed at the upper end and the lower end of the actuator fixing seat A27 respectively, and support connecting plates B22 are fixedly installed at the upper end and the lower end of the support frame E29 respectively;

preferably, a bracket connecting plate B22 of a first loading mechanism between the support frame A23 and the support frame C25 is fixedly arranged on a vertical plate C25-4, a bracket connecting plate B22 of a third loading mechanism between the support frame D26 and the support frame C25 is fixedly arranged on a vertical plate B25-3, and a second corner of the triangular equivalent force component 30 is fixedly arranged on a vertical plate A25-2;

preferably, the Z-axis test module comprises a portal frame 31 fixedly mounted on the platform 1, a portal frame beam connecting and supporting seat 32 is fixedly mounted on a beam of the portal frame 31, a sixth loading mechanism is fixedly mounted between the portal frame beam connecting and supporting seat 32 and the supporting block 2, a hydraulic driver 14 of the sixth loading mechanism is fixedly mounted on the portal frame beam connecting and supporting seat 32, and a support connecting plate B22 is fixedly mounted on the supporting block 2.

The experimental tool improves the prior design verification mode which is deviated from theory, namely CAE software analysis, into a practical, three-dimensional and modular experimental tool for design verification; the test tool and the related equipment are used for testing in a fixed place such as a laboratory, and test data can be obtained timely and effectively; through the modularization of the test tool, the front steering knuckle tests of different projects only need to replace tool parts at the positions of key parts according to actual conditions, so that the test cost is greatly saved; the test tool is simple and convenient to assemble and disassemble and can simultaneously perform a plurality of tests by depending on an MTS reliable test system; the improved tool is very comprehensive, and all previous fatigue tests can be replaced by one test.

Drawings

FIG. 1: the structure of the application is shown schematically;

FIG. 2: an enlarged view of portion a in fig. 1;

FIG. 3: FIG. 1 is another schematic angular structure;

FIG. 4: the structure schematic diagram of the driving mechanism;

FIG. 5: the structural schematic diagram of the X-axis test module;

FIG. 6: FIG. 5 is another schematic view of the angular structure;

FIG. 7: an enlarged schematic view of part B in fig. 6;

FIG. 8: the structure schematic diagram of the Y-axis test module part;

FIG. 9: an enlarged view of portion C in fig. 8;

FIG. 10: FIG. 8 is another schematic view of the angular structure;

FIG. 11: FIG. 8 is a schematic view of the installation of the 7Y load block;

in the figure: 1. Platform, 2, supporting block, 3, knuckle to be detected, 4, MY load block, 5, simulation pin A, 6, XYZ load block, 7, simulation pin B, 8, XY load block, 9, simulation pin C, 10, 7Y load block, 11, steering arm simulation pin, 12, vertical plate, 13, bearing, 14, hydraulic driver, 15, guide rail connecting plate, 16, optical axis, 17, linear bearing, 18, end joint bearing U-shaped joint, 19, joint bearing, 20, two-force rod, 21, support connecting plate A, 22, support connecting plate B, 23, support frame A, 24, support frame B, 25, support frame C, 25-1, bottom plate, 25-2, vertical plate A, 25-3, vertical plate B, 25-4, vertical plate C, 26, support frame D, 27 and actuator fixing seat A, 28. The actuator fixing seats B and 29, the supporting frames E and 30, the triangle and other effect parts, and the portal frame 31, the portal frame 32 and the portal frame beam are connected with the supporting seat.

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 of ordinary skill in the art without any creative work belong to the protection scope of the present invention.

Example 1. An automobile steering knuckle 8 axle spectrum iterative test tool shown in fig. 1-3 comprises a platform 1, wherein a supporting block 2 is fixedly installed on the platform 1, a steering knuckle to be detected is fixedly installed on the supporting block 2, a MY load block 4 is installed behind the steering knuckle to be detected, an XYZ load block 6 is installed above the steering knuckle through a simulation pin a5, an XY load block 8 is installed below the XYZ load block 6 through a simulation pin B7, a 7Y load block 10 is installed on a steering arm of the steering knuckle to be detected through a simulation pin C9, a steering arm simulation pin 11 is installed between the steering knuckle to be detected and the XYZ load block 6, an X-axis test module is installed above the MY load block 4, on the left side of the XYZ load block 6 and on the right side of the XY load block 8, a Y-axis test module is installed in front of the XY load block 8, in front of the 7Y load block 10, in front of the steering arm simulation pin 11, and in front of a simulation pin B7, a Z-axis test module is arranged above the XYZ load block 6;

a vertical plate 12 is fixedly mounted on the supporting block 2, a bearing 13 perpendicular to the vertical plate 12 is mounted on the vertical plate 12, and the knuckle to be detected is mounted on the bearing 13;

the X-axis test module, the Y-axis test module and the Z-axis test module respectively comprise a loading mechanism, the loading mechanism comprises a hydraulic driver 14, two guide rail connecting plates 15 which are separated by a certain distance are mounted at the output end of the hydraulic driver 14, two parallel optical shafts 16 are mounted between the two guide rail connecting plates 15, two linear bearings 17 are respectively mounted on the two optical shafts 16, an end joint bearing U-shaped joint 18 is mounted on the guide rail connecting plate 15 far away from the hydraulic driver 14, two joint bearings 19 are mounted at the other end of the end joint bearing U-shaped joint 18, a two-force rod 20 is mounted between the two joint bearings 19, a support connecting plate A21 is mounted on one side of each linear bearing 17, and the other end of the support connecting plate A21 is mounted on a support connecting plate B22;

the hydraulic driver 14 is a 50KN hydraulic driver or a25 KN hydraulic driver;

the X-axis test module shown in fig. 5-7 further includes a support frame a23 and a support frame B24 fixedly mounted on the platform 1 and spaced at a certain distance, a support frame C25 is fixedly mounted between the support frame a23 and the support frame B24, a first loading mechanism is mounted between the support frame a23 and the support frame C25, and two second loading mechanisms are mounted in parallel between the support frame C25 and the support frame B24;

the hydraulic driver 14 of the first loading mechanism between the support frame A23 and the support frame C25 is a 50KN hydraulic driver and is fixedly installed on the support frame A23, the support connecting plate B22 is fixedly installed on the support frame C25, the hydraulic driver 14 of the second loading mechanism between the support frame C25 and the support frame B24 is a25 KN hydraulic driver and is fixedly installed on the support frame B24, and the support connecting plate B22 is fixedly installed on the supporting block 2;

the supporting frame C25 shown in FIGS. 5 and 6 comprises a bottom plate 25-1 fixedly mounted on the platform 1, a vertical plate A25-2 is fixedly mounted above the bottom plate 25-1, a vertical plate B25-3 perpendicular to the vertical plate A25-2 is fixedly mounted near one end of the vertical plate A25-2, and a vertical plate C25-4 parallel to the vertical plate B25-3 is fixedly mounted at the other end of the vertical plate A25-2;

the Y-axis test module shown in fig. 8-11 further includes a support D26 fixedly mounted on the platform 1 and parallel to the support a23, an actuator fixing seat a27 and an actuator fixing seat B28 fixedly mounted on the platform 1 and perpendicular to the support a23, a support E29 spaced from the actuator fixing seat B28 by a certain distance, a third loading mechanism is fixedly mounted between the support D26 and the support C25, a fourth loading mechanism is fixedly mounted between the actuator fixing seat B28 and the support E29, the hydraulic drivers 14 of the third loading mechanism and the fourth loading mechanism are 50KN hydraulic drivers respectively and fixedly mounted on the support D26 and the actuator fixing seat B28, a support connecting plate B22 is respectively and fixedly mounted on the support C25 and the support E29, a triangle-like efficacy component 30 is mounted at the other end of the joint bearing 19, a second angle-like efficacy component 30 of the triangle-like efficacy component is fixedly mounted on the other side of the support C25 or the support E29, a joint bearing 19 is installed at the third corner of the triangular equivalent force part 30, a second force rod 20 is installed on the joint bearing 19, the second force rod 20 is in contact with a steering arm simulation pin 11 or a simulation pin B7, fifth loading mechanisms are fixedly installed between the actuator fixing seat A27 and the support frame E29 from top to bottom, hydraulic drivers 14 of the two fifth loading mechanisms are 25KN hydraulic drivers and are respectively and fixedly installed at the upper end and the lower end of the actuator fixing seat A27, and support connecting plates B22 are respectively and fixedly installed at the upper end and the lower end of the support frame E29; a support connecting plate B22 of a first loading mechanism between the support frame A23 and the support frame C25 is fixedly arranged on a vertical plate C25-4, a support connecting plate B22 of a third loading mechanism between the support frame D26 and the support frame C25 is fixedly arranged on a vertical plate B25-3, and a second corner of the triangular equivalent force component 30 is fixedly arranged on a vertical plate A25-2;

the Z-axis test module comprises a portal frame 31 fixedly mounted on the platform 1, a portal frame beam connecting and supporting seat 32 is fixedly mounted on a beam of the portal frame 31, a sixth loading mechanism is fixedly mounted between the portal frame beam connecting and supporting seat 32 and the supporting block 2, a hydraulic driver 14 of the sixth loading mechanism is a25 KN hydraulic driver and is fixedly mounted on the portal frame beam connecting and supporting seat 32, and a support connecting plate B22 is fixedly mounted on the supporting block 2.

The test fixture is used for fixing and constraining the steering knuckle part in a certain connection mode, and the stress size and direction of each part of the steering knuckle part in the whole test process are consistent with the stress size and direction of the steering knuckle when the steering knuckle is installed on a vehicle to run.

Because the experiment is very complicated, 8 oil cylinders are required to be connected simultaneously to apply loads in 8 directions. When the tool is designed, the accuracy of the force magnitude and direction of each steering knuckle hard point is ensured, and the tools applying loads in three XYZ directions are designed respectively and then integrated to form a general assembly drawing. After the tool is designed and manufactured, the whole test tool is built on a special test platform, the simulated road spectrum load provided by a client host factory is edited by using an American MTS hydraulic servo fatigue test system and then is tested, so that the load applied by the tool is fed back to a computer display through a sensor in real time, and testers can know the test information and the stress condition of a steering knuckle at any time and any place.

The test tool of the embodiment can be used in a fixed test place, so that the time is saved, and the efficiency is improved; the result is reliable and accurate, and the stress condition of the steering knuckle part can be observed in real time; reliable test data can be timely provided for a design research and development team; one set of tool can carry out multichannel, multidirectional loading, can load 8 passageway loads at most simultaneously.

The test tool of the embodiment is used for the fatigue test of the 356.2 aluminum alloy front steering knuckle. The test tool is used for fixing and restraining front steering knuckle parts, and a host factory acquires 24 steering knuckle stressed load spectrums under different road conditions through various road simulation experiments. After the road spectrum is collected, the road spectrum loads are edited and programmed based on the strong equipment capability of the US MTS, and then actual road tests are simulated in batches in a laboratory. The application fields are as follows: the method is mainly applied to design verification of new project products and is also applied to internal product quality monitoring and product change verification. The steering knuckle part is ensured to meet the loading requirement and is safe and reliable.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides an 8 axle routes of auto steering festival spectrum iterative test frocks which characterized in that: including platform (1), fixed mounting has supporting shoe (2) on platform (1), fixed mounting has to detect the knuckle on supporting shoe (2), MY load piece (4) is installed to the rear of waiting to detect the knuckle, and XYZ load piece (6) are installed through simulation round pin A (5) to the top, XY load piece (8) are installed through simulation round pin B (7) to the below of XYZ load piece (6), 7Y load piece (10) are installed through simulation round pin C (9) to the steering arm of waiting to detect the knuckle, install steering arm simulation round pin (11) between to detect knuckle and XYZ load piece (6), the top of MY load piece (4), the left side of XYZ load piece (6), the right side of XY load piece (8) install the X axle test module, the place ahead of XY load piece (8), the place ahead of 7Y load piece (10), A Y-axis test module is arranged in front of the steering arm simulation pin (11) and in front of the simulation pin B (7), and a Z-axis test module is arranged above the XYZ load block (6).

2. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 1, which is characterized in that: the supporting block (2) is fixedly provided with a vertical plate (12), the vertical plate (12) is provided with a bearing (13) perpendicular to the vertical plate (12), and the knuckle to be detected is arranged on the bearing (13).

3. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 1 or 2, characterized in that: the X-axis test module, the Y-axis test module and the Z-axis test module respectively comprise a loading mechanism, the loading mechanism comprises a hydraulic driver (14), the output end of the hydraulic driver (14) is provided with two guide rail connecting plates (15) which are separated by a certain distance, two parallel optical axes (16) are arranged between the two guide rail connecting plates (15), two linear bearings (17) are respectively arranged on the two optical axes (16), a U-shaped joint (18) of an end joint bearing is arranged on the guide rail connecting plate (15) far away from the hydraulic driver (14), two joint bearings (19) are arranged at the other end of the end joint bearing U-shaped joint (18), a two-force rod (20) is arranged between the two joint bearings (19), a support connecting plate A (21) is arranged at one side of each linear bearing (17), the other end of the support connecting plate A (21) is arranged on the support connecting plate B (22).

4. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 3, characterized in that: the hydraulic drive (14) is a 50KN hydraulic drive or a25 KN hydraulic drive.

5. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 3, characterized in that: the X-axis test module further comprises a support frame A (23) and a support frame B (24) which are fixedly mounted on the platform (1) and separated by a certain distance, a support frame C (25) is fixedly mounted between the support frame A (23) and the support frame B (24), a first loading mechanism is mounted between the support frame A (23) and the support frame C (25), and two second loading mechanisms are mounted between the support frame C (25) and the support frame B (24) in parallel.

6. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 5, characterized in that: the hydraulic drive (14) of the first loading mechanism between the support frame A (23) and the support frame C (25) is fixedly installed on the support frame A (23), the support connecting plate B (22) is fixedly installed on the support frame C (25), the hydraulic drive (14) of the second loading mechanism between the support frame C (25) and the support frame B (24) is fixedly installed on the support frame B (24), and the support connecting plate B (22) is fixedly installed on the supporting block (2).

7. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 6, which is characterized in that: the supporting frame C (25) comprises a bottom plate (25-1) fixedly mounted on the platform (1), a vertical plate A (25-2) is fixedly mounted above the bottom plate (25-1), a vertical plate B (25-3) perpendicular to the vertical plate A (25-2) is fixedly mounted at one end close to the vertical plate A (25-2), and a vertical plate C (25-4) parallel to the vertical plate B (25-3) is fixedly mounted at the other end of the vertical plate A (25-2).

8. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 7, characterized in that: the Y-axis test module further comprises a support frame D (26) which is fixedly installed on the platform (1) and is parallel to the support frame A (23), an actuator fixing seat A (27) and an actuator fixing seat B (28) which are fixedly installed on the platform (1) and are perpendicular to the support frame A (23), and a support frame E (29) which is at a certain distance from the actuator fixing seat B (28), wherein a third loading mechanism is fixedly installed between the support frame D (26) and the support frame C (25), a fourth loading mechanism is fixedly installed between the actuator fixing seat B (28) and the support frame E (29), hydraulic drivers (14) of the third loading mechanism and the fourth loading mechanism are respectively and fixedly installed on the support frame D (26) and the actuator fixing seat B (28), and a support connecting plate B (22) is respectively and fixedly installed on the support frame C (25) and the support frame E (29), the hydraulic driving mechanism is characterized in that a triangular equal-effect part (30) is installed at the other end of the joint bearing (19), a second angle of the triangular equal-effect part (30) is fixedly installed on the other surface of the support frame C (25) or the support frame E (29), a joint bearing (19) is installed at a third angle of the triangular equal-effect part (30), a two-force rod (20) is installed on the joint bearing (19), the two-force rod (20) is in contact with the steering arm simulation pin (11) or the simulation pin B (7), fifth loading mechanisms are fixedly installed between the actuator fixing seat A (27) and the support frame E (29) from top to bottom, hydraulic drivers (14) of the two fifth loading mechanisms are fixedly installed at the upper end and the lower end of the actuator fixing seat A (27) respectively, and support connecting plates B (22) are fixedly installed at the upper end and the lower end of the support frame E (29) respectively.

9. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 8, characterized in that: the support connection plate B (22) of a first loading mechanism between the support frame A (23) and the support frame C (25) is fixedly installed on a vertical plate C (25-4), the support connection plate B (22) of a third loading mechanism between the support frame D (26) and the support frame C (25) is fixedly installed on a vertical plate B (25-3), and a second corner of the triangular equivalent force component (30) is fixedly installed on a vertical plate A (25-2).

10. The automobile steering knuckle 8-axis spectrum iterative test tool according to claim 3, characterized in that: the Z-axis test module comprises a portal frame (31) fixedly mounted on the platform (1), a portal frame beam connecting and supporting seat (32) is fixedly mounted on a beam of the portal frame (31), a sixth loading mechanism is fixedly mounted between the portal frame beam connecting and supporting seat (32) and the supporting block (2), a hydraulic driver (14) of the sixth loading mechanism is fixedly mounted on the portal frame beam connecting and supporting seat (32), and a support connecting plate B (22) is fixedly mounted on the supporting block (2).

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