Multi-axis loading equipment

Abstract

The present invention relates to a multi-axis loading device. The multi-axis loading device includes a frame structure, including multiple columns and beams, the beams are used to connect the columns; a fixing device, used to install the test sample; a lifting mechanism, including a first drive motor, two connecting seats, two first screw rods, two elevator seats and a vertical guide rail, the drive motor is used to drive the first screw rod to rotate to drive the connecting seat to rise or fall along the vertical guide rail; a translation mechanism, including a second drive motor, two bearing seat plates, a linear slide and a second screw rod, the second drive motor is used to drive the second screw rod to rotate to drive the fixing device to move along the length direction of the linear slide rail; a pitch adjustment mechanism, including a third drive motor, the third drive motor is used to drive the bearing seat plate to rotate to drive the translation mechanism to rotate. The present invention is easy to operate and can meet the requirements of the test project, and can improve the test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle testing, and in particular to a multi-axis loading device. Background Art

[0002] In the field of vehicle parts testing, static strength and durability tests of interior and exterior trim samples such as seats and door panels play a pivotal role. These tests are key links in ensuring the quality and safety of vehicle parts, and are of great significance in improving the quality of the entire vehicle.

[0003] Servo cylinders and pneumatic cylinders are often indispensable tools when conducting such tests. They can provide stable and precise force for the sample, thus simulating various situations in actual use to test the performance and durability of the sample. However, in the actual test process, many complex problems are faced.

[0004] First, because different samples have different shapes, there is no unified standard shape. Some samples may be irregular curved surfaces, while others may be assemblies with complex structures. At the same time, the force application position and angle also vary from sample to sample. This requires the placement of electric cylinders and pneumatic cylinders to be carefully adjusted and planned according to the specific samples. If the placement is not appropriate, not only will the force not be applied accurately, but it may also lead to deviations in the test results, affecting the correct evaluation of the sample performance.

[0005] On the one hand, in order to better meet the diverse needs of customers, the electric cylinder must be able to adjust the pitch angle in addition to the up and down stroke adjustment function. Because in different test scenarios, the angle of force application may vary greatly. Only by flexibly adjusting the pitch angle of the electric cylinder can we ensure that the direction of force application is consistent with the actual usage, so as to obtain more accurate and reliable test results. For example, when simulating the seat to bear pressure at different angles, it is necessary to adjust the pitch angle of the electric cylinder to achieve this.

[0006] On the other hand, conventional tooling has obvious disadvantages in practical applications. They are usually not only very heavy, but also extremely inconvenient to carry and operate, and require a lot of manpower and material resources. Moreover, the installation process is also extremely complicated, and it is necessary to rely on screws and clamps to ensure that the position of the sample is firm. This process undoubtedly increases the difficulty and working hours of the operator. The operator needs to spend a lot of time to install and adjust the tooling to ensure that the position of the sample is accurate. The increase in working hours will inevitably affect the progress of the test, making the entire testing process lengthy and inefficient. This will not only increase costs, but may also delay product development and time to market, causing huge losses to the company.

[0007] In summary, in the field of vehicle parts testing, it is necessary to continuously explore and improve existing technologies and equipment to improve the efficiency and accuracy of tests and meet the market demand for high-quality vehicle parts. Summary of the invention

[0008] In view of the above problems in the prior art, the present invention proposes a multi-axis loading device, which is easy to operate, can meet the requirements of test projects, and can improve test efficiency.

[0009] Specifically, the present invention proposes a multi-axis loading device, comprising:

[0010] A frame structure comprising a plurality of columns and beams, wherein the beams are used to connect the columns;

[0011] Fixtures for mounting test specimens;

[0012] A lifting mechanism, comprising a first driving motor, two connecting seats, two first screw rods, two lifting seats and a vertical guide rail, wherein the lifting seat is arranged on the cross beam, the driving motor is arranged on one of the lifting seats, the two connecting seats are arranged opposite to each other and are respectively threadedly matched with the two first screw rods, the vertical guide rail is arranged on the column, and the driving motor is used to drive the first screw rod to rotate so as to drive the connecting seat to rise or fall along the vertical guide rail;

[0013] The translation mechanism comprises a second drive motor, two bearing seat plates, a linear slide rail and a second screw rod, wherein the two bearing seat plates are respectively arranged on the two connecting seats, the linear slide rail and the second screw rod are horizontally fixed between the two bearing seat plates, the second drive motor is fixed on the fixing device, the fixing device is threadedly matched with the second screw rod, and the second drive motor is used to drive the second screw rod to rotate so as to drive the fixing device to move along the length direction of the linear slide rail;

[0014] The pitch adjustment mechanism comprises a third drive motor, wherein the third drive motor is arranged on the connecting seat, and the third drive motor is used to drive the bearing seat plate to rotate so as to drive the translation mechanism to rotate.

[0015] According to one embodiment of the present invention, the frame structure further includes a fixed bottom plate and a reinforcing plate, the bottom of the column is fixedly arranged on the fixed bottom plate, and the reinforcing plate is arranged on the top of the column for reinforcing and fixing the column and the beam.

[0016] According to one embodiment of the present invention, the lifting mechanism further comprises a bearing support seat, the bearing support seat is fixedly disposed on the fixed base plate, and the bottom of the first screw rod is fixed to the fixed base plate through the bearing support seat.

[0017] According to an embodiment of the present invention, the lifting mechanism further includes a synchronous drive shaft for connecting the two lifting machine seats, and the first drive motor drives the two first screw rods to rotate synchronously through the synchronous drive shaft.

[0018] According to one embodiment of the present invention, the pitch adjustment mechanism also includes a transmission shaft, which passes through the two bearing seat plates and is fixedly connected to the bearing seat plates, and one end of the transmission shaft passes through the bearing seat plates and the connecting seat and is connected to the third drive motor.

[0019] According to an embodiment of the present invention, the translation mechanism includes two linear slide rails that are spaced apart from each other, and two ends of the linear slide rails are respectively fixed to the two bearing seat plates.

[0020] According to an embodiment of the present invention, the translation mechanism includes two second screw rods that are spaced apart from each other, and two ends of the second screw rods are respectively fixed to the two bearing seat plates.

[0021] According to an embodiment of the present invention, the transmission shaft is arranged between the two linear slide rails, and the transmission shaft and the two linear slide rails are located in the same plane.

[0022] According to one embodiment of the present invention, the multi-axis loading device also includes a quick screw, an arc groove is opened on the connecting seat, and a plurality of positioning holes are opened on the bearing seat plate. The arc groove and the positioning holes cooperate with each other, and the quick screw passes through the arc groove and is inserted into the positioning hole to fix the connecting seat and the bearing seat plate.

[0023] According to one embodiment of the present invention, the first screw rod and the second screw rod are ball screw rods.

[0024] The present invention provides a multi-axis loading device, which adjusts the position of a fixing device by a lifting mechanism and a translation mechanism, and adjusts the pitch angle of the fixing device by a pitch adjustment mechanism, thereby meeting the requirements of the test project, being easy to operate and improving the test efficiency.

[0025] It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are included to provide further explanation of the present invention, and are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and together with the description serve to explain the principle of the present invention.

[0027] In the attached figure:

[0028] Figure 1A schematic structural diagram of a multi-axis loading device according to an embodiment of the present invention is shown.

[0029] Figure 2 yes Figure 1 Schematic diagram of the framework structure in .

[0030] Figure 3 yes Figure 1 Schematic diagram of the lifting mechanism in FIG.

[0031] Figure 4 yes Figure 1 Schematic diagram of the structure of the translation mechanism and pitch adjustment mechanism.

[0032] Figure 5 yes Figure 1 A stereoscopic diagram of the translation mechanism and pitch adjustment mechanism.

[0033] The above drawings include the following reference numerals:

[0034] Axle loading device 100

[0035] Frame structure 110

[0036] Column 111

[0037] Beam 112

[0038] Fixed bottom plate 113

[0039] Reinforcement plate 114

[0040] Fixture 120

[0041] Lifting mechanism 130

[0042] The first driving motor 131

[0043] Connecting seat 132

[0044] Arc groove 1321

[0045] First screw 133

[0046] Lifting seat 134

[0047] Bearing support 135

[0048] Synchronous drive shaft 136

[0049] Quick Screw 137

[0050] Vertical guide rail 138

[0051] Translation mechanism 140

[0052] The second driving motor 141

[0053] Bearing seat plate 142

[0054] Linear guide 143

[0055] Second screw rod 144

[0056] Pitch adjustment mechanism 150

[0057] The third driving motor 151

[0058] Transmission shaft 152 DETAILED DESCRIPTION

[0059] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0060] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0063] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0064] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0065] Figure 1 A schematic structural diagram of a multi-axis loading device according to an embodiment of the present invention is shown. Figure 2 yes Figure 1 Schematic diagram of the framework structure in . Figure 3 yes Figure 1 Schematic diagram of the lifting mechanism in FIG. Figure 4 yes Figure 1 Schematic diagram of the structure of the translation mechanism and pitch adjustment mechanism. Figure 5 yes Figure 1 As shown in the figure, a multi-axis loading device 100 mainly includes a frame structure 110, a fixing device 120, a lifting mechanism 130, a translation mechanism 140 and a pitch adjustment mechanism 150.

[0066] Among them, reference Figure 2 The frame structure 110 includes a plurality of columns 111 and a crossbeam 112. The columns 111 serve as the supporting body of the entire device and provide a stable infrastructure for the device. The crossbeam 112 plays a key role in connecting the columns 111, firmly connecting the columns 111 together to form a stable whole. This frame structure 110 design ensures that the device can remain stable when subjected to various loading forces without shaking or deformation. At the same time, the strength and rigidity of the crossbeam 112 are also crucial because it needs to withstand the forces from multiple parts such as the lifting mechanism 130, the translation mechanism 140 and the pitch adjustment mechanism 150.

[0067] The fixture 120 is used to install a test sample, which may be an electric cylinder or other vehicle parts.

[0068] refer to Figure 3 The lifting mechanism 130 includes a first driving motor 131, two connecting seats 132, two first screw rods 133, two lifting seats 134 and a vertical guide rail 138. The lifting seat 134 is arranged on the crossbeam 112. The driving motor is arranged on one lifting seat 134. The two connecting seats 132 are arranged opposite to each other and are respectively threadedly matched with the two first screw rods 133. The vertical guide rail 138 is arranged on the column 111, and the vertical guide rail 138 is slidably matched with the connecting seat 132. The first driving motor 131 is used to drive the first screw rod 133 to rotate, and the rotation of the first screw rod 133 is converted into a linear motion of the connecting seat 132, thereby driving the connecting seat 132 to rise or fall along the vertical guide rail 138. In this way, the height adjustment of the translation mechanism 140, the pitch adjustment mechanism 150 and the fixing device 120 installed on the connecting seat 132 can be achieved.

[0069] refer to Figure 4 and Figure 5 The translation mechanism 140 includes a second drive motor 141, two bearing seat plates 142, a linear slide rail 143 and a second screw rod 144. The two bearing seat plates 142 are respectively arranged on the inner sides of the two connecting seats 132, and the two rotate in coordination. The linear slide rail 143 and the second screw rod 144 are horizontally fixed between the two bearing seat plates 142 to ensure the direction and stability of the translation movement. The second drive motor 141 is fixed on the fixing device 120, and the fixing device 120 is threadedly matched with the second screw rod 144. The second drive motor 141 is used to drive the second screw rod 144 to rotate, and the rotation of the second screw rod 144 is converted into a linear motion of the fixing device 120, so that the fixing device 120 moves along the length direction of the linear slide rail 143. In this way, the horizontal position of the test sample can be adjusted so that it can receive loading force at different horizontal positions to simulate the situations in various actual usage scenarios.

[0070] The pitch adjustment mechanism 150 includes a third drive motor 151. The third drive motor 151 is disposed on the connection seat 132, and is used to drive the bearing seat plate 142 to rotate, thereby driving the entire translation mechanism 140 to rotate. Since the fixing device 120 is installed on the translation mechanism 140, the rotation of the translation mechanism 140 will cause the test sample to produce a change in the pitch angle. In this way, the pitch angle of the test sample can be adjusted to simulate the force conditions at different angles to meet various complex test requirements.

[0071] refer to Figure 2In some examples, the frame structure 110 further includes a fixed base plate 113 and a reinforcing plate 114. The fixed base plate 113 is the basic part of the frame structure 110 of the entire multi-axis loading device 100 and bears the weight of the entire device. The bottom of the column 111 is fixedly arranged on the fixed base plate 113, and the column 111 can be closely combined with the fixed base plate 113 by welding, bolting, etc. to form a stable whole. At the same time, the fixed base plate 113 may also be reserved with structures such as mounting holes or positioning pins for connecting and positioning with other components or external equipment to ensure the coordination and consistency of the entire equipment system. The reinforcing plate 114 is arranged on the top of the column 111 to strengthen the connection between the fixed column 111 and the crossbeam 112. The reinforcing plate 114 can limit the deformation degree of the column 111 and the crossbeam 112 when subjected to force, so that the frame structure 110 can maintain a good shape and dimensional stability when subjected to a large load to meet different test requirements. In this example, four columns 111, four short beams 112 and two long beams 112 are used. The four columns 111 are divided into two groups, and the two columns 111 in each group are close to each other. The upper and lower parts are connected and fixed by an end beam 112, and the bottom is set on a fixed bottom plate 113. The tops between the two groups of columns 111 are connected by two long beams 112 to form an overall frame structure 110. The top of each column 111 is connected to a short beam 112 and a long beam 112, and the three are reinforced and fixed by a reinforcing plate 114. The columns 111 and the beams 112 are made of aluminum alloy profiles, which can effectively reduce the weight of the entire frame structure 110 while ensuring sufficient strength. The outer dimensions of the multi-axis loading device 100 are length, width and height: 2350mmX1170mmX2200mm, and the inner stroke dimensions are length, width and height: 1200mmX200mmX1400mm. The reinforcing plate 114 is made of a 6 mm thick stainless steel plate, has high strength and rigidity, and can effectively strengthen the connection between the column 111 and the beam 112 .

[0072] refer to Figure 3 In some examples, the lifting mechanism 130 also includes a bearing support seat 135. The bearing support seat 135 is fixedly disposed on the fixed base plate 113, and the bottom of the first screw rod 133 is fixed to the fixed base plate 113 through the bearing support seat 135. The bearing support seat 135 provides stable support for the bottom of the first screw rod 133. This installation method enables the first screw rod 133 to maintain a vertical state during operation, ensuring the stability of the connecting seat 132 during the rising and falling process. By fixing the bottom of the first screw rod 133 to the fixed base plate 113, the bearing support seat 135 effectively transmits the gravity from the connecting seat 132 and the test sample borne by the screw rod and the various forces generated during the lifting process, thereby preventing the first screw rod 133 from bending or shaking due to uneven force.

[0073] In some examples, the lifting mechanism 130 also includes a synchronous drive shaft 136 for connecting two lifting machine seats 134. The first drive motor 131 drives the two first screw rods 133 to rotate synchronously through the synchronous drive shaft 136. The synchronous drive shaft 136 transmits the power of the first drive motor 131 to the two first screw rods 133 to ensure that the two screw rods can rotate synchronously. In this way, the two connecting seats 132 can always remain horizontal during the rising and falling process, avoiding the situation where the connecting seat 132 is tilted or stuck due to the two screw rods being out of sync. In this example, the lifting and lowering of the connecting seat 132 is approximately 0 to 1400 mm.

[0074] refer to Figure 4 and Figure 5 In some examples, the pitch adjustment mechanism 150 further includes a transmission shaft 152. The transmission shaft 152 passes through the two bearing seat plates 142 and is fixedly connected to the bearing seat plates 142. One end of the transmission shaft 152 passes through the bearing seat plates 142 and the connecting seat 132 and is connected to the third drive motor 151. In this way, the power of the third drive motor 151 can be effectively transmitted to the transmission shaft 152, thereby driving the bearing seat plates 142 to rotate, thereby achieving pitch adjustment of the translation mechanism 140 and the fixing device 120. The transmission shaft 152 passes through the two bearing seat plates 142 and is fixedly connected to them, and can ensure the synchronous movement of the two bearing seat plates 142 during the rotation process. The existence of the transmission shaft 152 enhances the structural stability of the pitch adjustment mechanism 150. It connects the two bearing seat plates 142 together to form a whole, thereby improving the rigidity and torsion resistance of the entire mechanism.

[0075] In some examples, the translation mechanism 140 includes two linear guide rails 143 arranged at intervals. The two ends of the linear guide rail 143 are respectively fixed on two bearing seat plates 142. The two linear guide rails 143 improve the linear movement ability of the fixture 120, and share the weight of the fixture 120 and the test sample, so that the load can be evenly distributed, avoiding deformation and damage of the components due to excessive force on a single point. Because the linear guide rail 143 itself has a low friction coefficient and good guiding accuracy. When the second drive motor 141 drives the second screw 144 to rotate and prompts the fixture 120 to move, the guiding effect of the linear guide rail 143 allows the fixture 120 to move only along a preset straight line trajectory, which is suitable for those test scenarios requiring high-precision positioning. It should be noted that in this example, the translation stroke of the fixture 120 is approximately 0 to 1200 mm.

[0076] In some examples, the translation mechanism 140 includes two second screw rods 144 arranged at intervals, and the two ends of the second screw rods 144 are respectively fixed on two bearing seat plates 142. This spacing distribution enhances the stability and load-bearing capacity of the translation mechanism 140. The two second screw rods 144 are parallel to each other and are respectively located on both sides of the linear slide rail 143, and together with the linear slide rail 143, they form a stable frame structure 110. They evenly share the weight from the fixture 120 and the test sample, reduce the force on a single screw rod, and reduce the risk of deformation or damage to the screw rod due to excessive load. And the two second screw rods 144 rotate synchronously to ensure that the fixture 120 remains stable during the translation process without tilting or offsetting.

[0077] In some examples, the transmission shaft 152 is disposed between the two linear guide rails 143, and the transmission shaft 152 and the two linear guide rails 143 are located in the same plane. This design makes the overall structure more compact. The transmission shaft 152 located in the same plane cooperates with the linear guide rails 143. When the third drive motor 151 drives the transmission shaft 152 to rotate, causing the bearing seat plate 142 to rotate, the linear guide rails 143 located in the same plane can synchronously follow this action, because there is no additional resistance or misalignment risk caused by the height difference between them, which ensures the smooth pitch action of the fixture 120 and can simulate various precise pitch postures for the test sample.

[0078] In some examples, the multi-axis loading device 100 further includes a quick screw 137. An arc groove 1321 is provided on the connection seat 132, and a plurality of positioning holes are provided on the bearing seat plate 142, and the arc groove 1321 and the positioning holes cooperate. The quick screw 137 passes through the arc groove 1321 and is inserted into the positioning hole to fix the connection seat 132 and the bearing seat plate 142. Specifically, the plurality of positioning holes provided on the bearing seat plate 142 provide a plurality of options for fixation. These positioning holes are distributed in different positions, and a suitable position can be selected for fixation according to actual needs. The setting of a plurality of positioning holes makes the fixation between the connection seat 132 and the bearing seat plate 142 more firm and reliable, and can withstand a large load and torque. The function of the quick screw 137 is to quickly realize the fixation of the connection seat 132 and the bearing seat plate 142. When the connection seat 132 and the bearing seat plate 142 need to be fixed, the quick screw 137 only needs to be passed through the arc groove 1321 and inserted into the positioning hole. This fixing method is simple and quick, without the need for complex tools and cumbersome operations, which greatly improves the efficiency of equipment installation and commissioning. The design of the quick screw 137 also takes into account the convenience of disassembly. When it is necessary to adjust the angle between the connecting seat 132 and the bearing seat plate 142 or to perform maintenance, the quick screw 137 can be quickly removed to easily separate the connecting seat 132 and the bearing seat plate 142. This design makes the maintenance and adjustment of the equipment more convenient and quick, reduces equipment downtime, and improves test efficiency. In this example, the pitch angle travel of the test sample is approximately ±45°.

[0079] In some examples, the first screw rod 133 and the second screw rod 144 are ball screws. The transmission efficiency of the ball screw is much higher than that of the ordinary screw rod, which not only saves energy, but also speeds up the overall operation speed of the equipment and improves the test efficiency. In addition, the ball screw also has the characteristics of good precision control, high load-bearing capacity and good durability.

[0080] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A multi-axis loading device, comprising: A frame structure comprising a plurality of columns and beams, wherein the beams are used to connect the columns; Fixtures for mounting test specimens; A lifting mechanism, comprising a first driving motor, two connecting seats, two first screw rods, two lifting seats and a vertical guide rail, wherein the lifting seat is arranged on the cross beam, the driving motor is arranged on one of the lifting seats, the two connecting seats are arranged opposite to each other and are respectively threadedly matched with the two first screw rods, the vertical guide rail is arranged on the column, and the driving motor is used to drive the first screw rod to rotate so as to drive the connecting seat to rise or fall along the vertical guide rail; The translation mechanism comprises a second drive motor, two bearing seat plates, a linear slide rail and a second screw rod, wherein the two bearing seat plates are respectively arranged on the two connecting seats, the linear slide rail and the second screw rod are horizontally fixed between the two bearing seat plates, the second drive motor is fixed on the fixing device, the fixing device is threadedly matched with the second screw rod, and the second drive motor is used to drive the second screw rod to rotate so as to drive the fixing device to move along the length direction of the linear slide rail; The pitch adjustment mechanism comprises a third drive motor, wherein the third drive motor is arranged on the connecting seat, and the third drive motor is used to drive the bearing seat plate to rotate so as to drive the translation mechanism to rotate.

2. The multi-axis loading device according to claim 1, characterized in that: The frame structure also includes a fixed bottom plate and a reinforcing plate. The bottom of the column is fixedly arranged on the fixed bottom plate, and the reinforcing plate is arranged on the top of the column to strengthen and fix the column and the crossbeam.

3. The multi-axis loading device according to claim 2, characterized in that: The lifting mechanism also includes a bearing support seat, which is fixedly arranged on the fixed bottom plate, and the bottom of the first screw rod is fixed to the fixed bottom plate through the bearing support seat.

4. The multi-axis loading device according to claim 2, characterized in that: The lifting mechanism also includes a synchronous driving shaft for connecting the two lifting machine seats, and the first driving motor drives the two first screw rods to rotate synchronously through the synchronous driving shaft.

5. The multi-axis loading device according to claim 1, characterized in that: The pitch adjustment mechanism also includes a transmission shaft, which passes through the two bearing seat plates and is fixedly connected to the bearing seat plates. One end of the transmission shaft passes through the bearing seat plates and the connecting seat and is connected to the third drive motor.

6. The multi-axis loading device according to claim 5, characterized in that: The translation mechanism comprises two linear slide rails which are arranged at intervals, and two ends of the linear slide rails are respectively fixed on the two bearing seat plates.

7. The multi-axis loading device according to claim 6, characterized in that: The translation mechanism comprises two second screw rods which are arranged at intervals, and two ends of the second screw rods are respectively fixed on the two bearing seat plates.

8. The multi-axis loading device according to claim 6, characterized in that: The transmission shaft is arranged between the two linear slide rails, and the transmission shaft and the two linear slide rails are located in the same plane.

9. The multi-axis loading device according to claim 5, characterized in that: It also includes a quick screw, an arc groove is opened on the connecting seat, and a plurality of positioning holes are opened on the bearing seat plate. The arc groove and the positioning holes cooperate with each other, and the quick screw passes through the arc groove and is inserted into the positioning holes to fix the connecting seat and the bearing seat plate.

10. The multi-axis loading device according to claim 1, characterized in that: The first screw rod and the second screw rod are ball screw rods.

Images