Guide device with selectable degree of freedom mode and vibration test system having the same

Abstract

The present invention discloses a guide device with selectable degree of freedom mode and a vibration test system having the same, wherein the guide device comprises a fixed guide shaft, a sliding block slidably matched with the fixed guide shaft, and a movable guide shaft slidably matched with the sliding block, and the fixed guide shaft and the movable guide shaft extend in different directions; the guide device also has a first degree of freedom locking mechanism and a second degree of freedom locking mechanism, the first degree of freedom locking mechanism is used for automatically locking or releasing the positional relationship between the fixed guide shaft and the sliding block, and the second degree of freedom locking mechanism is used for automatically locking or releasing the positional relationship between the movable guide shaft and the sliding block; the degree of freedom mode control of the guide device provided by the present invention is simple, does not require excessive manual participation, can effectively reduce the workload, and has high reliability; in the specific application to vibration test systems or other systems requiring guidance, the automatic switching of different degree of freedom modes can be quickly realized, thereby meeting the guidance requirements in specific directions of application scenarios.

Description

Technical Field

[0001] The invention relates to the field of multi-axis guide design, and in particular to a guide device with optional degree of freedom modes and a vibration test system having the same. Background Art

[0002] In the vibration test system involved in the prior art or other systems that require a specific component to be oriented at multiple different angles, it is often used Figure 1 The guide device shown. As shown in the figure, the guide device includes a first guide shaft 11', a sliding block 12' that is slidably matched to the first guide shaft 11', and a second guide shaft 13' that is slidably matched with the sliding block 12'. The two ends of the first guide shaft 11' are respectively fixed to two first fixing blocks 14', and then the guide device can be fixed to an external base based on the first fixing blocks 14'; the two ends of the second guide shaft 13' are respectively fixed to two second fixing blocks 15', and the specific components that need to be guided outside can be connected to the guide device through the second fixing blocks 15'. Typically, the extension directions of the first guide shaft 11' and the second guide shaft 13' are perpendicular to each other, so that with the cooperation of the first guide shaft 11', the sliding block 12' and the second guide shaft 13', the movement guidance of a specific component in two different directions (such as the vertical direction D1' and the horizontal direction D2' in the figure) can be achieved, that is, a dual-degree-of-freedom mode can be achieved through the guiding device.

[0003] In specific application scenarios, the freedom mode of the guide device is often not limited to Figure 1 In the dual-degree-of-freedom mode shown, sometimes only the guide device is required to guide in one direction. In this case, the degree of freedom of the guide device in the other direction needs to be limited, that is, the guide device needs to achieve a single-degree-of-freedom mode. In the prior art, a specific method for achieving a single-degree-of-freedom mode is: at least one (usually two) screws 16' are provided on each first fixed block 14' and each second fixed block 15'. For further reference Figure 2 As shown, when the guide device only guides in the vertical direction D1', by rotating the screws 16' on the two second fixed blocks 15', the screws 16' on the two second fixed blocks 15' form abutment with the sliding block 12' from the left and right sides respectively, thereby locking the position between the second guide shaft 13' and the sliding block 12'; correspondingly, when the guide device only guides in the horizontal direction (not shown), by rotating the screws 16' on the two first fixed blocks 14', the screws 16' on the two first fixed blocks 14' form abutment with the sliding block 12' from the upper and lower sides, thereby locking the position between the first guide shaft 11' and the sliding block 12'.

[0004] However, the prior art adopts the method of rotating the screw rod 16' to lock the sliding block 12' to select different degrees of freedom modes, which is manually operated, cumbersome, and prone to operational errors. In view of this, it is necessary to provide an improved technical solution to solve the above problems. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To achieve the above-mentioned purpose of the invention, the present invention provides a guiding device with optional degree of freedom mode, and its specific design method is as follows.

[0006] A guiding device with optional degree of freedom mode, comprising a fixed guiding shaft, a sliding block slidably matched with the fixed guiding shaft, and a movable guiding shaft slidably matched with the sliding block, wherein the fixed guiding shaft and the movable guiding shaft extend in different directions; the guiding device also has a first degree of freedom locking mechanism and a second degree of freedom locking mechanism, wherein the first degree of freedom locking mechanism is used to automatically lock or release the positional relationship between the fixed guiding shaft and the sliding block, and the second degree of freedom locking mechanism is used to automatically lock or release the positional relationship between the movable guiding shaft and the sliding block.

[0007] Furthermore, the first degree of freedom locking mechanism and the second degree of freedom locking mechanism both include a cylinder for providing a driving force.

[0008] Further, the first degree of freedom locking mechanism includes at least one of the cylinders and a first limit block fixed to the end of the corresponding cylinder piston rod, and the cylinder barrel of the corresponding cylinder is fixedly arranged relative to the fixed guide shaft; the first degree of freedom locking mechanism is configured as: when the piston rod is extended to a set displacement, the first limit block locks the positional relationship between the fixed guide shaft and the sliding block.

[0009] Furthermore, the first degree of freedom locking mechanism includes a pair of the cylinders and a pair of the first limit blocks, and is configured as follows: the corresponding piston rods of the pair of the cylinders extend to the set displacement, and the pair of the first limit blocks respectively abut against the two end portions of the sliding block in the extension direction of the fixed guide shaft to lock the positional relationship between the fixed guide shaft and the sliding block.

[0010] Furthermore, the second degree of freedom locking mechanism includes at least one of the cylinders and a second limit block fixed to the end of the piston rod of the corresponding cylinder; the cylinder barrel of the corresponding cylinder is fixedly arranged relative to the fixed guide shaft, and the extension and retraction direction of the piston rod of the cylinder is consistent with the extension direction of the fixed guide shaft; the second degree of freedom locking mechanism is configured as follows: when the piston rod extends to the point where the second limit block abuts against the movable guide shaft and the abutment pressure is not less than a set value, the second limit block locks the position relationship between the movable guide shaft and the sliding block; when the second limit block locks the position relationship between the movable guide shaft and the sliding block and the sliding block slides along the fixed guide shaft, the piston rod of the corresponding cylinder synchronously retracts and retracts relative to the sliding block to keep the second limit block abutting against the movable guide shaft with a pressure not less than the set value.

[0011] Furthermore, the second degree of freedom locking mechanism includes a pair of cylinders and a pair of second limit blocks, and the pair of cylinders are respectively located on both sides of the sliding block in the extension direction of the movable guide shaft, and are configured as follows: when the piston rods of the pair of cylinders are extended to lock the positional relationship between the movable guide shaft and the sliding block, the two second limit blocks respectively abut the movable guide shaft at the positions on both sides of the sliding block.

[0012] Furthermore, a groove for matching with the movable guide shaft is provided on a side of the second limit block facing the movable guide shaft.

[0013] Furthermore, the guide device with optional degree of freedom mode also has a fixed seat fixedly arranged relative to the fixed guide shaft, and the cylinder barrel of the cylinder is fixed to the fixed seat.

[0014] Furthermore, the guide device with optional freedom mode also has a compressed air source and a three-position four-way solenoid air valve. The cylinder is a single-piston rod double-acting cylinder. The compressed air source is connected to the single-piston rod double-acting cylinder via the three-position four-way solenoid valve.

[0015] Furthermore, the extension directions of the fixed guide shaft and the movable guide shaft are perpendicular to each other.

[0016] The present invention also provides a vibration test system, which includes a vibration power source and a support platform connected to the vibration power source. The vibration test system also has a guide device with optional freedom mode as described above, and the support platform is fixedly arranged relative to the movable guide shaft.

[0017] The beneficial effects of the present invention are: based on the specific structure of the guiding device provided by the present invention, the degree of freedom mode control is simple, does not require excessive human involvement, can effectively reduce the workload, and has high reliability; in specific applications in vibration test systems or other systems that require guidance, different degree of freedom modes can be quickly and automatically switched, thereby meeting the guidance requirements in specific directions of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 Shown is a schematic diagram of a prior art guiding device in a dual-degree-of-freedom mode;

[0020] Figure 2 Shown is a schematic diagram of a prior art guide device in a single degree of freedom mode;

[0021] Figure 3 It is a first angle schematic diagram of the guiding device of the present invention when it is in a dual-degree-of-freedom mode;

[0022] Figure 4 It is a second angle schematic diagram of the guiding device of the present invention when it is in a dual-degree-of-freedom mode;

[0023] Figure 5 Shown is a schematic diagram of the guide device of the present invention when it is in a single degree of freedom mode;

[0024] Figure 6 Shown is a schematic diagram of the guide device of the present invention in another single degree of freedom mode;

[0025] Figure 7 Shown is a schematic diagram of the switching of the working state of the second degree of freedom locking mechanism;

[0026] Figure 8 Shown is a schematic diagram of the working principle of the cylinder. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the guide device with optional degree of freedom mode of the present invention includes a fixed guide shaft 11, a sliding block 12 slidably matched with the fixed guide shaft 11, and a movable guide shaft 13 slidably matched with the sliding block 12. The fixed guide shaft 11 and the movable guide shaft 13 extend in different directions. Since the fixed guide shaft 11 and the movable guide shaft 13 extend in different directions, guidance in two different directions can be achieved. As a preferred embodiment of the present invention, Figure 3-Figure 7 As shown, in this embodiment, the extending directions of the fixed guide shaft 11 and the movable guide shaft 13 are perpendicular to each other. That is, the D1 direction and the D2 direction shown in the figure are perpendicular to each other.

[0029] The guiding device involved in the present invention also has a first degree of freedom locking mechanism and a second degree of freedom locking mechanism, wherein the first degree of freedom locking mechanism is used to automatically lock or release the positional relationship between the fixed guide shaft 11 and the sliding block 12, and the second degree of freedom locking mechanism is used to automatically lock or release the positional relationship between the movable guide shaft 13 and the sliding block 12.

[0030] The present invention can realize the selection of different degrees of freedom modes of the guide device by automatically locking or releasing the positional relationship between the guide shaft 11 (or the movable guide shaft 13) and the sliding block 12. It is relatively easy to understand that when the positional relationship between the fixed guide shaft 11 (or the movable guide shaft 13) and the sliding block 12 is locked, a relatively fixed positional relationship is formed between the fixed guide shaft 11 (or the movable guide shaft 13) and the sliding block 12; when the positional relationship between the fixed guide shaft 11 (or the movable guide shaft 13) and the sliding block 12 is released, the fixed guide shaft 11 (or the movable guide shaft 13) and the sliding block 12 can slide relative to each other, thereby realizing guidance in the corresponding direction, that is, the guide device has the degree of freedom in the corresponding direction.

[0031] The present invention also provides a vibration test system, which includes a vibration power source and a support platform connected to the vibration power source. It is relatively easy to understand that the vibration power source is used to realize the vibration action of the support platform, and the structure of the vibration power source and the support platform can refer to the existing design. The vibration test system involved in the present invention also has a guide device with optional freedom mode involved above, wherein the support platform is fixedly arranged relative to the movable guide shaft 13.

[0032] Based on the specific structure of the guiding device provided by the present invention, the degree of freedom mode control is simple, does not require excessive human involvement, can effectively reduce the workload, and has high reliability; in specific applications in vibration test systems or other systems that require guidance, different degrees of freedom modes can be quickly and automatically switched to meet the guidance requirements in specific directions of application scenarios.

[0033] In the specific implementation process of the vibration test system of the present invention, the vibration test system can include a plurality of guide devices with optional degrees of freedom modes, and the guide devices with optional degrees of freedom modes cooperate with the bearing platform at the same time. Among them, the fixed guide shafts 11 of the plurality of guide devices extend in the same direction, and the fixed guide shafts 11 of the plurality of guide devices extend in the same direction, thereby realizing the vibration guidance of the bearing platform through cooperation.

[0034] In order to better understand the present invention, some specific implementation structures of the guide device with optional freedom mode of the present invention are further described below:

[0035] Preferably, in some embodiments, the first degree of freedom locking mechanism and the second degree of freedom locking mechanism of the guide device of the present invention both include a cylinder for providing driving force. Providing driving force by the cylinder makes it easier to automate the locking action and the releasing action described above.

[0036] In some more specific embodiments, the first degree of freedom locking mechanism includes at least one first cylinder 16 and a first stopper 160 fixed to the end of a first piston rod 162 of the first cylinder 16, and a first cylinder barrel 161 of the first cylinder 16 is fixedly arranged relative to the fixed guide shaft 11. The first degree of freedom locking mechanism is configured such that when the first piston rod 162 is extended to a set displacement, the first stopper 160 locks the positional relationship between the fixed guide shaft 11 and the sliding block 12.

[0037] More specifically, refer to Figure 5 As shown, in this specific embodiment, the first degree of freedom locking mechanism includes a pair of first cylinders 16 (i.e., a pair of cylinders whose telescopic direction is consistent with the D2 direction) and a pair of first limit blocks 160, and is configured as follows: the first piston rods 162 of the pair of first cylinders 16 are extended to a set displacement, and the pair of first limit blocks 160 respectively abut against the two end portions of the sliding block 12 in the extension direction of the fixed guide shaft 11 to lock the positional relationship between the fixed guide shaft 11 and the sliding block 12.

[0038] In this embodiment, when the first piston rods 162 of the pair of first cylinders 16 are retracted, the fixed guide shaft 11 and the sliding block 12 can slide relative to each other, that is, the sliding block 12 can slide on the fixed guide shaft 11 along the direction D1 shown in the figure; and when the first piston rods 162 of the pair of first cylinders 16 are extended to the set displacement, the position between the fixed guide shaft 11 and the sliding block 12 is locked. Figure 3 , Figure 5 As shown, Figure 3 The first piston rod 162 of the first cylinder 16 is in a retracted state, and the guide device can guide in the direction D1; Figure 5 The first piston rod 162 of the first cylinder 16 is in an extended state, and the freedom degree of the guide device in the direction of D1 is locked.

[0039] In the specific implementation process, in order to ensure that the first piston rod 162 of the first cylinder 16 extends smoothly when extending to the set displacement, a guide slope (not marked in the figure) is formed on the side of the first limit block 160 away from the end of the first cylinder 16 toward the sliding block 12.

[0040] Preferably, in some embodiments, the second degree of freedom locking mechanism of the guide device involved in the present invention includes at least one second cylinder 17 and a second limit block 170 fixed to the end of the second piston rod 172 of the second cylinder 17; the cylinder barrel 171 of the second cylinder 17 is fixed relative to the fixed guide shaft 11, and the extension and retraction direction of the second piston rod 172 of the second cylinder 17 is consistent with the extension direction of the fixed guide shaft 11.

[0041] The second degree of freedom locking mechanism is configured as follows: when the second piston rod 172 extends to the second limit block 170 to abut the movable guide shaft 13 and the abutting pressure is not less than a set value, the second limit block 170 locks the position relationship between the movable guide shaft 13 and the sliding block 12; when the second limit block 170 locks the position relationship between the movable guide shaft 13 and the sliding block 12 and the sliding block 12 slides along the fixed guide shaft 11, the second piston rod 172 of the second cylinder 17 is synchronously extended and retracted relative to the sliding block 12 to keep the second limit block 170 abutting against the movable guide shaft 13 with a pressure not less than a set value.

[0042] Combination Figure 6 As shown, it is relatively easy to know that when the second piston rod 172 extends to the second limit block 170 to abut the movable guide shaft 13, a friction force will be formed between the second limit block 170 and the movable guide shaft 13. When the friction force is greater than a certain value (correspondingly, the abutting pressure is not less than a set value), the positional relationship between the movable guide shaft 13 and the sliding block 12 can be locked.

[0043] contrast Figure 3 , Figure 6 As shown, Figure 3 The second piston rod 172 of the second cylinder 17 is in a retracted state, and the guide device can guide in the direction D2; Figure 6 The second piston rod 172 of the second cylinder 17 is in an extended state and abuts against the movable guide shaft 13, and at this time the freedom of the guide device in the direction D2 is locked.

[0044] Further integration Figure 6As shown, when the first piston rod 162 of the first cylinder 16 is in a retracted state, and the second piston rod 172 of the second cylinder 17 is in an extended state and locks the freedom of the guide device in the D2 direction, the guide device can only guide in the D1 direction, that is, the movable block 12 can drive the movable guide shaft 13 to move on the fixed guide shaft 11. During the guiding process of the guide device in the D1 direction, the second piston rod 172 can be synchronously extended and retracted relative to the sliding block 12 based on the air pressure in the cylinder 171, thereby keeping the second limit block 170 always in contact with the movable guide shaft 13, and by setting the air pressure in the cylinder 171, it can be ensured that the pressure is always not less than a certain set pressure value, thereby ensuring the reliability of locking the freedom in the D2 direction.

[0045] In more detail, in the illustrated embodiment, the second degree of freedom locking mechanism includes a pair of second cylinders 17 (i.e., a pair of cylinders whose telescopic direction is consistent with the D1 direction) and a pair of second stop blocks 170, the pair of second cylinders 17 are respectively located on both sides of the sliding block 12 in the extending direction of the movable guide shaft 13, and are configured such that: when the second piston rods 172 of the pair of second cylinders 17 are extended to lock the positional relationship between the movable guide shaft 13 and the sliding block 12, the two second stop blocks 170 respectively abut the positions of the movable guide shaft 13 on both sides of the sliding block 12. Such a setting can optimize the reliability of locking the degree of freedom in the D2 direction.

[0046] Further integration Figure 7 As shown, as a preferred implementation structure of the present invention, a groove 1700 for the movable guide shaft 13 to cooperate with is provided on the side of the second limit block 170 facing the movable guide shaft 13. When the second piston rod 172 of the second cylinder 17 is extended, the provision of the groove 1700 can ensure that there is a sufficient contact area between the second limit block 170 and the movable guide shaft 13; and when the movable block 12 drives the movable guide shaft 13 to move on the fixed guide shaft 11, the groove 1700 can prevent the second limit block 170 and the movable guide shaft 13 from being offset.

[0047] The guide device with optional degree of freedom mode of the present invention further comprises a fixing seat 18 fixedly arranged relative to the fixed guide shaft 11, and the cylinder barrel of the cylinder is fixed to the fixing seat 18. Figure 4 As shown, in this specific embodiment, both ends of the fixed guide shaft 11 are fixedly connected with the first fixed connection block 14, and the fixed seat 18 includes a first fixed plate 181 fixed to the first fixed connection block 14, a second fixed plate 182 fixed to the first fixed plate 181, and a third fixed plate 183 fixed to the first fixed plate 181. In the illustrated embodiment, the first cylinder barrel 161 of the first cylinder 16 is fixed to the third fixed plate 183, and the second cylinder barrel 171 of the second cylinder 17 is fixed to the second fixed plate 182.

[0048] The guide device with optional degree of freedom mode of the present invention further comprises a second fixed connection block 15 fixed to both ends of the movable guide shaft 13. In a specific vibration test system, the bearing platform is connected to the guide device through the second fixed connection block 15.

[0049] refer to Figure 8 As shown, the guide device with optional freedom mode involved in the present invention also has a compressed air source and a three-position four-way solenoid air valve 19. The cylinder involved above is a single-piston rod double-acting cylinder, and the compressed air source is connected to the single-piston rod double-acting cylinder via the three-position four-way solenoid valve 19.

[0050] It is relatively easy to understand that the three-position four-way electromagnetic air valve 19 has an air inlet port, an air return port and two working ports. Figure 8 The operation of the cylinder is demonstrated. Figure 8 Only the operation of the first cylinder 16 is taken as an example for demonstration. The operation mode of the second cylinder 17 can refer to the first cylinder 16 and will not be described in detail here.

[0051] As shown in the figure, the internal space of the first cylinder barrel 161 of the first cylinder 16 is divided into a first space S1 and a second space S2 by a piston 163. The first space S1 and the second space S2 are respectively connected to the two working ports of the three-position four-way solenoid air valve 19, and the compressed air source is connected to the air inlet of the three-position four-way solenoid air valve 19 (not marked in the figure).

[0052] When the three-position four-way solenoid air valve 19 is in three different working positions, the first cylinder is in the following three different states: in the first state, when the working port connected to the second space S2 is connected to the intake port, and the working port connected to the first space S1 is connected to the return port, the piston 163 moves toward the first space S1, and the first piston rod 162 of the first cylinder 16 contracts; in the second state, when the working port connected to the first space S1 is connected to the intake port, and the working port connected to the second space S2 is connected to the return port, the piston 163 moves toward the second space S2, and the first piston rod 162 of the first cylinder 16 extends; in the third state, when the working port connected to the first space S1 is connected to the working port connected to the second space S2, and the intake port is connected to the return port, the air volume in the first space S1 and the second space S2 remains unchanged in the current state.

[0053] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0054] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A guide device with selectable degrees of freedom modes, comprising a fixed guide shaft, a sliding block slidably matched with the fixed guide shaft, and a movable guide shaft slidably matched with the sliding block, wherein the fixed guide shaft and the movable guide shaft extend in different directions; characterized in that: The guide device also has a first degree of freedom locking mechanism and a second degree of freedom locking mechanism, wherein the first degree of freedom locking mechanism is used to automatically lock or release the positional relationship between the fixed guide shaft and the sliding block, and the second degree of freedom locking mechanism is used to automatically lock or release the positional relationship between the movable guide shaft and the sliding block; The first degree of freedom locking mechanism comprises a first cylinder for providing a driving force, and the second degree of freedom locking mechanism comprises a second cylinder for providing a driving force; the first degree of freedom locking mechanism comprises at least one of the first cylinders and a first limit block fixed to the end of the piston rod of the corresponding first cylinder, and the cylinder barrel of the corresponding first cylinder is fixedly arranged relative to the fixed guide shaft; the first degree of freedom locking mechanism is configured such that: when the piston rod is extended to a set displacement, the first limit block locks the positional relationship between the fixed guide shaft and the sliding block; The guide device with optional freedom mode also has a compressed air source and a three-position four-way electromagnetic air valve. The cylinder is a single-piston rod double-acting cylinder. The compressed air source is connected to the single-piston rod double-acting cylinder via the three-position four-way electromagnetic air valve.

2. The guiding device with selectable degrees of freedom mode according to claim 1, characterized in that: The first degree of freedom locking mechanism includes a pair of first cylinders and a pair of first limit blocks, and is configured as follows: the corresponding piston rods of the pair of first cylinders extend to the set displacement, and the pair of first limit blocks respectively abut against the two end portions of the sliding block in the extension direction of the fixed guide shaft to lock the positional relationship between the fixed guide shaft and the sliding block.

3. The guiding device with selectable degrees of freedom mode according to claim 1, characterized in that: The second degree of freedom locking mechanism comprises at least one of the cylinders and a second limit block fixed to the end of the piston rod of the corresponding cylinder; the cylinder barrel of the corresponding cylinder is fixedly arranged relative to the fixed guide shaft, and the extension direction of the piston rod of the cylinder is consistent with the extension direction of the fixed guide shaft; the second degree of freedom locking mechanism is configured such that: when the piston rod is extended to the point where the second limit block abuts against the movable guide shaft and the abutment pressure is not less than a set value, the second limit block locks the positional relationship between the movable guide shaft and the sliding block; When the second limit block locks the positional relationship between the movable guide shaft and the sliding block and the sliding block slides along the fixed guide shaft, the piston rod of the corresponding cylinder is synchronously extended and retracted relative to the sliding block to keep the second limit block against the movable guide shaft at a pressure not less than the set value.

4. The guiding device with selectable degrees of freedom mode according to claim 3, characterized in that: The second degree of freedom locking mechanism includes a pair of second cylinders and a pair of second limit blocks. The pair of second cylinders are respectively located on both sides of the sliding block in the extension direction of the movable guide shaft, and are configured as follows: when the piston rods of the pair of second cylinders are extended to lock the positional relationship between the movable guide shaft and the sliding block, the two second limit blocks respectively abut the movable guide shaft at the two sides of the sliding block.

5. The guiding device with selectable degrees of freedom mode according to claim 4, characterized in that: A groove for matching with the movable guide shaft is arranged on one side of the second limit block facing the movable guide shaft.

6. The guiding device with selectable degrees of freedom mode according to any one of claims 1 to 5, characterized in that: The guide device with optional freedom mode also has a fixed seat fixedly arranged relative to the fixed guide shaft, and the cylinder barrel of the cylinder is fixed to the fixed seat.

7. The guiding device with selectable degrees of freedom mode according to any one of claims 1-2, characterized in that: The extending directions of the fixed guide shaft and the movable guide shaft are perpendicular to each other.

8. A vibration test system, comprising a vibration power source and a support platform connected to the vibration power source, characterized in that: The vibration test system further comprises a guide device with selectable degrees of freedom modes as described in any one of claims 1 to 7, and the support platform is fixedly arranged relative to the movable guide shaft.

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