Holmium laser with four parallel rods sharing cavity

Abstract

The invention relates to the technical field of holmium laser, in particular to a holmium laser with four parallel rods sharing a cavity, which comprises a shell, and further comprises four main bottom plates which are parallel to one another and are movably arranged in the shell in a pairwise parallel manner; the auxiliary bottom plate is located in the middle of the four main bottom plates and is parallel to the main bottom plates; and the shear fork type moving mechanism is arranged in the shell and is connected with the auxiliary bottom plate. When the main heat detector on a certain main bottom plate detects abnormity, the shear fork type moving mechanism drives the auxiliary bottom plate to move to the original position of the main bottom plate and pushes the main bottom plate to slide horizontally, so that the auxiliary laser cavity can replace the main laser cavity on the main bottom plate to continue working, and the laser can output normally. And meanwhile, the main laser cavity on the main bottom plate stops working to reduce heat, so that the internal temperature of the laser is prevented from being too high, the fault rate of the laser is greatly reduced, and the stability and the service life of the whole system are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of holmium lasers, in particular to a holmium laser with four rods arranged in parallel and sharing a cavity. Background Art

[0002] Holmium laser is a solid-state pulsed laser. It is based on the fact that in the laser crystal (yttrium aluminum garnet crystal), holmium (Ho) ions are used as active ions. Through optical pumping, energy is input into the crystal, causing the electrons of the holmium ions to transition from low energy levels to high energy levels. When these electrons at high energy levels transition back to low energy levels, lasers with a specific wavelength of 2100nm are released.

[0003] In the prior art, the patent with announcement number CN219046365U is a 120W holmium laser generator assembly, including a holmium laser generator body, a terminal panel is installed on one side of the outer wall of the holmium laser generator body, the terminal panel includes energy collection signal terminals and main control board signal terminals, a bending partition is installed inside the holmium laser generator body, a plurality of light holes are opened on the outer wall of the bending partition, a motor main control board is installed on one side of the bending partition, and the holmium laser generator body has a pair of direction adjustment mechanisms, a plurality of light source mechanisms and a plurality of 45° reflector mechanisms on both sides of the light holes close to each other, a pair of the direction adjustment mechanisms and a plurality of the 45° reflector mechanisms are respectively inclined, a plurality of the light source mechanisms are respectively horizontally distributed, and the light source mechanisms are respectively at a 45-degree angle with the direction adjustment mechanisms and the 45° reflector mechanisms. This invention realizes the completely independent operation of the four-way holmium laser resonant cavity, and can accurately control the lasers of each cavity according to different needs, greatly expanding the flexibility of application. In addition, the new adaptive optical technology is used to automatically compensate for environmental interference and ensure output accuracy. In addition, the innovative integrated design optimizes the layout of the optical path and circuit, which can greatly improve the energy conversion efficiency.

[0004] The above technical solution can couple four lasers and form multi-channel output or single-channel output; however, it is found that when the heat of a laser channel is too high, if the laser channel continues to be used, it may cause the internal temperature of the laser to rise, which in turn causes failures and affects the stability and service life of the entire system. To this end, we propose a four-rod parallel common cavity holmium laser to effectively solve the above drawbacks. Summary of the invention

[0005] The purpose of the present invention is to provide a four-rod parallel common cavity holmium laser, which is used to solve the problem in the prior art proposed in the above background technology that when the heat of a certain laser is too high, if the laser continues to be used, it may cause the internal temperature of the laser to rise, thereby causing failure and affecting the stability and service life of the entire system.

[0006] The present invention is realized by the following technical scheme: a holmium laser with four rods arranged in parallel and sharing a cavity, comprising a housing and:

[0007] Four main bottom plates, the four main bottom plates are parallel to each other and are movably arranged in pairs in parallel in the housing, and a main laser cavity and a main heat detector are fixed in sequence from front to back on the top of each main bottom plate;

[0008] A secondary bottom plate, the secondary bottom plate is located in the middle of the four main bottom plates and is parallel to the main bottom plates, and a secondary laser cavity and a secondary heat detector are fixed in sequence from front to back on the top of the secondary bottom plate;

[0009] A scissor-type moving mechanism, which is disposed in the housing and connected to the auxiliary bottom plate; the scissor-type moving mechanism is used to push the auxiliary bottom plate to move toward any main bottom plate, so that the main bottom plate is offset from the initial position;

[0010] Four horizontal sliding reset mechanisms are arranged in the shell and correspond to each main base plate one by one. The horizontal sliding reset mechanisms are used to keep the corresponding main base plate at the initial position when no external force of the system is applied.

[0011] Optionally, the scissor-type moving mechanism is composed of a reversing assembly fixed to the bottom of the auxiliary base plate, two scissor-type guide assemblies fixed in the shell, and a translation assembly fixed in the shell;

[0012] The two scissor-type guide assemblies are respectively located at the front and rear sides of the auxiliary bottom plate, and the translation assembly is located at the rear sides of the two scissor-type guide assemblies.

[0013] Optionally, the reversing assembly includes a fixed frame fixed to the bottom of the sub-base plate, with hollow rotating shafts rotatably connected to the front and rear sides of the fixed frame respectively, a dual-axis servo motor transmission-connected to each hollow rotating shaft is installed on the fixed frame, and a mountain-shaped reversing member is arranged at one end of each hollow rotating shaft away from the dual-axis servo motor.

[0014] Optionally, the V-shaped reversing member includes a fixed shaft fixed on a fixed frame and movably passing through the hollow rotating shaft, and two symmetrical reversing rods are fixed at the end of the hollow rotating shaft, and each reversing rod is L-shaped.

[0015] Optionally, the scissors-type guide assembly includes a center plate corresponding to the mountain-shaped reversing member, two symmetrical scissors arms are fixed on the center plate, and cross arms arranged in the horizontal direction are fixed at both ends of each scissors arm, and one end of each cross arm away from the scissors arm is fixed to the shell.

[0016] Optionally, a circular groove for the rotation of the U-shaped switching member is opened in the middle of the center disk, and a guide inclined groove connected to the circular groove and arranged radially along the circular groove is opened on each scissors arm, and two arc-shaped blocks are symmetrically fixed in the circular groove; a transverse groove for the horizontal movement of the U-shaped switching member is opened on each cross arm, and each transverse groove is connected to the corresponding guide inclined groove.

[0017] Optionally, the translation assembly includes a translation plate arranged along the vertical direction, the lower end of the translation plate is slidably connected to the shell, a slide groove arranged along the vertical direction is opened on the front side of the translation plate, a slider slides in the slide groove, and one end of the fixed axis is fixed to the slider.

[0018] Optionally, the translation assembly also includes a screw sleeve fixed to the rear side of the translation plate, a screw rod arranged in a horizontal direction and spirally matched with the screw sleeve is rotatably connected in the shell, and a single-axis servo motor transmission-connected to the screw rod is fixed in the shell.

[0019] Optionally, the horizontal sliding reset mechanism includes two supporting plates fixed to the inner side wall of the shell and parallel to each other, the lower surface of the main bottom plate is movably fitted with each supporting plate, each supporting plate is penetrated by a limiting groove arranged in the horizontal direction, and a sliding plate fixed to the main bottom plate is slidably connected in each limiting groove;

[0020] A guide rod is fixed in each limiting groove and moves through the sliding plate in the horizontal direction. A return spring sleeved on the guide rod is arranged on one side of each sliding plate away from the main bottom plate.

[0021] Optionally, a first conductive sheet corresponding to the two support plates is embedded at the bottom of the main base plate, and the two first conductive sheets are electrically connected to two power input leads of the main laser cavity respectively;

[0022] A second conductive sheet corresponding to the two support plates is embedded at the bottom of the auxiliary bottom plate, and the two second conductive sheets are electrically connected to two power input leads of the auxiliary laser cavity respectively;

[0023] Conductive heads are fixed on the top of the two support plates, and the two conductive heads are electrically connected to the positive pole and the negative pole of the external power supply respectively.

[0024] Compared with the prior art, the present invention provides a four-rod parallel common cavity holmium laser, which has the following beneficial effects:

[0025] 1. The present invention is provided with four main base plates, auxiliary base plates, scissor-type moving mechanisms and four horizontal sliding resetting mechanisms. Since the four main base plates are arranged in parallel in pairs, and the auxiliary base plate is located in the middle of the four main base plates; when the main heat detector on a main base plate detects an abnormality, the scissor-type moving mechanism drives the auxiliary base plate to move to the original position of the main base plate, and pushes the main base plate to slide horizontally, so that the auxiliary laser cavity can replace the main laser cavity on the main base plate to continue working, so that the laser can output normally; at the same time, the main laser cavity on the main base plate stops working to reduce heat, thereby avoiding excessive internal temperature of the laser, greatly reducing the failure rate of the laser, and ensuring the stability and service life of the entire system.

[0026] 2. The present invention provides a reversing assembly, various scissor-type guide assemblies and a translation assembly. The operator only needs to operate the reversing assembly and the translation assembly to move the auxiliary base plate along the scissor-type guide assembly to move the auxiliary base plate to the original position of a main base plate, thereby reducing the difficulty of operation and the possibility of operational errors. The layout is reasonable, which is convenient for maintenance and replacement, and reduces maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional diagram of the housing of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure inside the housing of the present invention;

[0029] Figure 3 A schematic diagram of the structure of the interior of the housing of the present invention from another perspective;

[0030] Figure 4 It is a structural schematic diagram of the main bottom plate of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the reversing assembly of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the mountain-shaped switching member of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the scissor-type guide assembly of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the translation assembly of the present invention;

[0035] Fig. 9 It is a structural schematic diagram of the horizontal sliding reset mechanism of the present invention;

[0036] Fig.10 This is a schematic diagram of the structure of the present invention before commutation;

[0037] Fig.11It is a schematic diagram of the structure after the reversal of the present invention.

[0038] In the figure: 1, shell; 2, main bottom plate; 3, main laser cavity; 4, main heat detector; 5, auxiliary bottom plate; 6, auxiliary laser cavity; 7, auxiliary heat detector; 8, scissor-type moving mechanism; 801, reversing assembly; 8011, fixed frame; 8012, hollow rotating shaft; 8013, double-axis servo motor; 8014, mountain-shaped reversing member; 80141, fixed shaft; 80142, reversing rod; 802, scissor-type guide assembly; 8021, center plate; 8022, scissor arm; 8023, cross arm ;8024, circular groove;8025, guide inclined groove;8026, horizontal groove;8027, arc-shaped stopper;803, translation assembly;8031, translation plate;8032, slide groove;8033, screw sleeve;8034, lead screw;8035, single-axis servo motor;8036, slider;9, horizontal sliding reset mechanism;901, support plate;902, limit groove;903, slide plate;904, guide rod;905, reset spring;10, first conductive sheet;11, second conductive sheet;12, conductive head. DETAILED DESCRIPTION

[0039] 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.

[0040] Example: See Figures 1 to 11 A four-rod parallel common cavity holmium laser comprises a housing 1, which provides installation space for other components in the device.

[0041] This embodiment also includes: four main base plates 2, a sub-base plate 5, a scissor-type moving mechanism 8 and four horizontal sliding reset mechanisms 9; the present invention can solve the problem that when the heat of a certain laser is too high, if the laser is continued to be used, the internal temperature of the laser may increase, thereby causing a malfunction and affecting the stability and service life of the entire system through the mutual cooperation of the four main base plates 2, the sub-base plate 5, the scissor-type moving mechanism 8 and the four horizontal sliding reset mechanisms 9.

[0042] In this embodiment, four main bottom plates 2 are parallel to each other and are movably arranged in parallel in pairs in the housing 1. A main laser cavity 3 and a main heat detector 4 are fixed in sequence from front to back on the top of each main bottom plate 2; the front side of the main laser cavity 3 is the light output end, and the main heat detector 4 is located on the rear side of the main laser cavity 3. When the heat of the main laser cavity 3 is detected in real time, it will not affect the normal operation of the main laser cavity 3. The first water inlet hose and the first water outlet hose are respectively connected at both ends of the main laser cavity 3. The first water inlet hose and the first water outlet hose are respectively connected to the water cooling system for water cooling the inside of the main laser cavity 3. It should be noted that the specific structure and working principle of the main laser cavity 3, please refer to the light source mechanism in the comparative document CN219046365U, which will not be repeated here.

[0043] In addition, the sub-bottom plate 5 is located in the middle of the four main bottom plates 2 and is parallel to the main bottom plates 2. A sub-laser cavity 6 and a sub-heat detector 7 are fixed in sequence from front to back on the top of the sub-bottom plate 5. A second water inlet hose and a second water outlet hose are respectively connected at both ends of the sub-laser cavity 6. The second water inlet hose and the second water outlet hose are respectively connected to the water cooling system for water cooling the inside of the sub-laser cavity 6. The structure of the sub-laser cavity 6 is the same as that of the main laser cavity 3. The sub-heat detector 7 is used to monitor the temperature of the sub-laser cavity 6 in real time.

[0044] The scissor-type moving mechanism 8 is introduced as follows:

[0045] The scissor-type moving mechanism 8 is arranged in the housing 1 and connected to the secondary bottom plate 5; the scissor-type moving mechanism 8 is used to push the secondary bottom plate 5 to move toward any main bottom plate 2, so that the main bottom plate 2 is offset from the initial position. For example, when the main heat detector 4 on a main bottom plate 2 detects an abnormality, the scissor-type moving mechanism 8 drives the secondary bottom plate 5 to move to the original position of the main bottom plate 2, and pushes the main bottom plate 2 to slide horizontally. Specifically, the scissor-type moving mechanism 8 is composed of a reversing component 801 fixed to the bottom of the secondary bottom plate 5, two scissor-type guide components 802 fixed in the housing 1, and a translation component 803 fixed in the housing 1; the two scissor-type guide components 802 are respectively located on the front and rear sides of the secondary bottom plate 5, and the translation component 803 is located on the rear side of the two scissor-type guide components 802. The existence of the translation component 803 will not affect the light output of the main laser cavity 3 or the secondary laser cavity 6.

[0046] The reversing assembly 801 includes a fixed frame 8011 fixed to the bottom of the sub-bottom plate 5, and hollow rotating shafts 8012 are rotatably connected to the front and rear sides of the fixed frame 8011, and a dual-axis servo motor 8013 is installed on the fixed frame 8011, which is connected to each hollow rotating shaft 8012. In this embodiment, a gear transmission method is adopted, and other transmission methods can also be adopted, which will not be repeated here. A mountain-shaped reversing member 8014 is arranged at one end of each hollow rotating shaft 8012 away from the dual-axis servo motor 8013. When the dual-axis servo motor 8013 is working, it can drive the hollow rotating shaft 8012 to rotate, thereby driving the mountain-shaped reversing member 8014 to rotate and perform reversing.

[0047] In this embodiment, the cross-shaped reversing member 8014 includes a fixed shaft 80141 on a fixed frame 8011 and movably passing through the hollow rotating shaft 8012, and two symmetrical reversing rods 80142 are fixed at the end of the hollow rotating shaft 8012, and each reversing rod 80142 is L-shaped. When the hollow rotating shaft 8012 rotates, it can drive the two reversing rods 80142 to rotate synchronously. During this process, the fixed shaft 80141 never rotates.

[0048] Secondly, the scissors-type guide assembly 802 includes a center disk 8021 corresponding to the mountain-shaped reversing member 8014, and two symmetrical scissors arms 8022 are fixed on the center disk 8021. A horizontally arranged cross arm 8023 is fixed at both ends of each scissors arm 8022, and one end of each cross arm 8023 away from the scissors arm 8022 is fixed to the shell 1; the center disk 8021, each scissors arm 8022 and each cross arm 8023 cooperate with each other to form a scissors-type structure.

[0049] It should be added that a circular groove 8024 is provided in the middle of the center disk 8021 for the rotation of the U-shaped switching member 8014, and a guide inclined groove 8025 is provided on each scissor arm 8022, which is connected to the circular groove 8024 and arranged radially along the circular groove 8024, and two arc-shaped stoppers 8027 are symmetrically fixed in the circular groove 8024; when reversing is required, the U-shaped switching member 8014 rotates to align with the corresponding guide inclined groove 8025, and under the obstruction of the arc-shaped stoppers 8027, the inclined U-shaped switching member 8014 can smoothly enter the guide inclined groove 8025. A transverse groove 8026 is provided on each horizontal arm 8023 for the horizontal movement of the U-shaped switching member 8014, and each transverse groove 8026 is connected to the corresponding guide inclined groove 8025. When the inclined U-shaped switching member 8014 moves horizontally in the transverse groove 8026, it can drive the corresponding main bottom plate 2 to slide horizontally.

[0050] It should be noted that since the mountain-shaped reversing member 8014 is composed of a fixed shaft 80141 and two reversing rods 80142 that cooperate with each other; therefore, in this embodiment, the transverse groove 8026 is composed of three parallel and spaced horizontal grooves, the upper and lower horizontal grooves are respectively provided for the horizontal movement of the two reversing rods 80142, and the middle horizontal groove is provided for the horizontal movement of the fixed shaft 80141.

[0051] In addition, the translation assembly 803 includes a translation plate 8031 ​​arranged along the vertical direction, and the lower end of the translation plate 8031 ​​is slidably connected to the shell 1; specifically, a guide slider is fixed to the lower end of the translation plate 8031, and a guide groove for horizontal sliding of the guide slider is opened on the inner bottom of the shell 1, and the translation plate 8031 ​​is slidably connected to the shell 1 through the cooperation of the guide slider and the guide groove.

[0052] A slide groove 8032 arranged in the vertical direction is provided on the front side of the translation plate 8031, a slider 8036 slides in the slide groove 8032, and one end of the fixed shaft 80141 is fixed to the slider 8036. The slider 8036 can only slide up and down in the slide groove 8032, but cannot rotate. Therefore, through the cooperation of the slider 8036, the slide groove 8032, the fixed shaft 80141 and the fixed frame 8011, the auxiliary bottom plate 5 cannot rotate, and can only move left and right and up and down under the drive of the scissor-type moving mechanism 8.

[0053] It should be added that the translation assembly 803 also includes a screw sleeve 8033 fixed to the rear side of the translation plate 8031, a screw rod 8034 arranged in the horizontal direction and spirally matched with the screw sleeve 8033 is rotatably connected in the housing 1, and a single-axis servo motor 8035 is fixed in the housing 1 and is transmission-connected to the screw rod 8034. When the single-axis servo motor 8035 is working, it can drive the translation plate 8031 ​​to move left or right through the cooperation of the screw rod 8034 and the screw sleeve 8033.

[0054] The horizontal sliding resetting mechanism 9 is introduced as follows:

[0055] Four horizontal sliding reset mechanisms 9 are arranged in the shell 1 and correspond to each main base plate 2 one by one. The horizontal sliding reset mechanism 9 is used to keep the corresponding main base plate 2 in the initial position when it is not affected by external forces of the system. Specifically, the horizontal sliding reset mechanism 9 includes two supporting plates 901 fixed to the inner wall of the shell 1 and parallel to each other, which are used to hold up the main base plate 2. The lower surface of the main base plate 2 is movably fitted with each supporting plate 901, and the main base plate 2 can slide left and right along the supporting plate 901. A limiting groove 902 arranged in the horizontal direction is penetrated on each supporting plate 901, and a sliding plate 903 fixed to the main base plate 2 is slidably connected in each limiting groove 902; a guide rod 904 that movably passes through the sliding plate 903 in the horizontal direction is fixed in each limiting groove 902, so that the sliding plate 903 can only move left and right along the guide rod 904. A reset spring 905 sleeved on the guide rod 904 is arranged on the side of each sliding plate 903 away from the main bottom plate 2. When the temperature detected by the main heat detector 4 is normal or the temperature detected by the auxiliary heat detector 7 is abnormal, the auxiliary bottom plate 5 can be reset by the scissor-type moving mechanism 8, so that the sliding plate 903 is reset under the action of the reset spring 905, and then the main bottom plate 2 is reset.

[0056] In this embodiment, the bottom of the main bottom plate 2 is embedded with first conductive sheets 10 corresponding to the two support plates 901, and the two first conductive sheets 10 are electrically connected to the two power input leads of the main laser cavity 3; the bottom of the auxiliary bottom plate 5 is embedded with second conductive sheets 11 corresponding to the two support plates 901, and the two second conductive sheets 11 are electrically connected to the two power input leads of the auxiliary laser cavity 6; the tops of the two support plates 901 are fixed with conductive heads 12, and the two conductive heads 12 are electrically connected to the positive and negative poles of the external power supply. In the initial state, each first conductive sheet 10 at the bottom of the main bottom plate 2 is in contact with the corresponding conductive head 12, and the main laser cavity 3 is in a powered-on state, so that it can work normally. When the main bottom plate 2 is pushed away from the original position, each first conductive sheet 10 at the bottom of the main bottom plate 2 does not contact the conductive head 12, so that the main laser cavity 3 is in a powered-off state, and then the main laser cavity 3 no longer generates heat, and the temperature is lowered. At the same time, the second conductive sheet 11 at the bottom of the auxiliary bottom plate 5 contacts the conductive head 12 , so that the auxiliary laser cavity 6 is energized, thereby enabling the auxiliary laser cavity 6 to replace the main laser cavity 3 to work.

[0057] Here’s how it works:

[0058] For the convenience of description, the main base plate 2, the main laser cavity 3, the main heat detector 4, the transverse groove 8026 and the guide bevel groove 8025 located on the upper left are respectively defined as main base plate No. 1, main laser cavity No. 1, main heat detector No. 1, transverse groove No. 1 and guide bevel groove No. 1.

[0059] When the No. 1 main heat detector detects that the temperature is too high, the dual-axis servo motor 8013 works to drive each hollow rotating shaft 8012 to rotate until the mountain-shaped switching member 8014 contacts the arc-shaped stopper 8027, so that the mountain-shaped switching member 8014 is aligned with the No. 1 guide chute, such as Fig.11 Then, the single-axis servo motor 8035 works, and through the cooperation of the screw rod 8034 and the screw sleeve 8033, the translation plate 8031 ​​moves to the left, thereby driving the mountain-shaped reversing member 8014 to move along the first guide inclined groove through the cooperation of the slider 8036, the slide groove 8032 and the fixed shaft 80141.

[0060] When the U-shaped switching member 8014 moves to the upper limit position of the No. 1 guide inclined groove, the translation plate 8031 ​​continues to move to the left, thereby driving the inclined U-shaped switching member 8014 to move to the left along the transverse groove 8026, and then pushing the No. 1 main base plate to the left away from the original position through the secondary base plate 5, so that the secondary laser cavity 6 replaces the No. 1 main laser cavity to work.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-rod parallel common cavity holmium laser, comprising a housing (1), characterized in that: Also includes: Four main bottom plates (2), the four main bottom plates (2) are parallel to each other and are movably arranged in pairs in parallel in the housing (1), and a main laser cavity (3) and a main heat detector (4) are fixed in sequence from front to back on the top of each main bottom plate (2); A secondary bottom plate (5), the secondary bottom plate (5) being located in the middle of the four main bottom plates (2) and parallel to the main bottom plates (2), and a secondary laser cavity (6) and a secondary heat detector (7) being fixed in sequence from front to back on the top of the secondary bottom plate (5); A scissor-type moving mechanism (8), the scissor-type moving mechanism (8) being arranged in the housing (1) and connected to the auxiliary bottom plate (5); the scissor-type moving mechanism (8) is used to push the auxiliary bottom plate (5) to move in the direction of any main bottom plate (2), so as to cause the main bottom plate (2) to deviate from the initial position; Four horizontal sliding reset mechanisms (9), which are arranged in the housing (1) and correspond one to one with each main base plate (2), and are used to keep the corresponding main base plate (2) at the initial position when no external force of the system is applied.

2. The four-rod parallel common cavity holmium laser according to claim 1, characterized in that: The scissor-type moving mechanism (8) is composed of a reversing assembly (801) fixed to the bottom of the auxiliary base plate (5), two scissor-type guide assemblies (802) fixed in the housing (1), and a translation assembly (803) fixed in the housing (1); The two scissor-type guide assemblies (802) are respectively located at the front and rear sides of the auxiliary bottom plate (5), and the translation assembly (803) is located at the rear sides of the two scissor-type guide assemblies (802).

3. The four-rod parallel common cavity holmium laser according to claim 2, characterized in that: The reversing assembly (801) comprises a fixing frame (8011) fixed to the bottom of the auxiliary bottom plate (5); hollow rotating shafts (8012) are rotatably connected to the front and rear sides of the fixing frame (8011); a double-axis servo motor (8013) drivingly connected to each hollow rotating shaft (8012) is installed on the fixing frame (8011); and a mountain-shaped reversing member (8014) is arranged at one end of each hollow rotating shaft (8012) away from the double-axis servo motor (8013).

4. The four-rod parallel common cavity holmium laser according to claim 3, characterized in that: The mountain-shaped reversing member (8014) comprises a fixed shaft (80141) fixed on a fixed frame (8011) and movably passing through a hollow rotating shaft (8012), and two symmetrical reversing rods (80142) are fixed at the ends of the hollow rotating shaft (8012), and each reversing rod (80142) is L-shaped.

5. The four-rod parallel common cavity holmium laser according to claim 4, characterized in that: The scissor-type guide assembly (802) comprises a center plate (8021) corresponding to the mountain-shaped reversing member (8014), two symmetrical scissor arms (8022) are fixed on the center plate (8021), and a horizontally arranged cross arm (8023) is fixed at both ends of each scissor arm (8022), and one end of each cross arm (8023) away from the scissor arm (8022) is fixed to the housing (1).

6. The four-rod parallel-connected common-cavity holmium laser according to claim 5, characterized in that: A circular groove (8024) for the U-shaped switching member (8014) to rotate is provided in the middle of the center disk (8021); a guide inclined groove (8025) connected to the circular groove (8024) and arranged radially along the circular groove (8024) is provided on each scissor arm (8022); two arc-shaped stoppers (8027) are symmetrically fixed in the circular groove (8024); and a transverse groove (8026) for the U-shaped switching member (8014) to move horizontally is provided on each horizontal arm (8023); each transverse groove (8026) is connected to the corresponding guide inclined groove (8025).

7. The four-rod parallel common cavity holmium laser according to claim 6, characterized in that: The translation assembly (803) comprises a translation plate (8031) arranged in a vertical direction, the lower end of the translation plate (8031) is slidably connected to the housing (1), a slide groove (8032) arranged in a vertical direction is provided on the front side of the translation plate (8031), a slider (8036) slides in the slide groove (8032), and one end of the fixed shaft (80141) is fixed to the slider (8036).

8. The four-rod parallel common cavity holmium laser according to claim 7, characterized in that: The translation assembly (803) further comprises a screw sleeve (8033) fixed to the rear side of the translation plate (8031), a screw rod (8034) arranged in a horizontal direction and spirally matched with the screw sleeve (8033) being rotatably connected in the housing (1), and a single-axis servo motor (8035) drivingly connected to the screw rod (8034) being fixed in the housing (1).

9. The four-rod parallel common cavity holmium laser according to claim 1, characterized in that: The horizontal sliding reset mechanism (9) comprises two supporting plates (901) fixed to the inner side wall of the shell (1) and parallel to each other, the lower surface of the main bottom plate (2) is movably fitted with each supporting plate (901), each supporting plate (901) is penetrated by a limiting groove (902) arranged in the horizontal direction, and a sliding plate (903) fixed to the main bottom plate (2) is slidably connected in each limiting groove (902); A guide rod (904) is fixed in each limit groove (902) and moves through the sliding plate (903) in the horizontal direction. A return spring (905) sleeved on the guide rod (904) is arranged on the side of each sliding plate (903) away from the main bottom plate (2).

10. The four-rod parallel-connected common-cavity holmium laser according to claim 9, characterized in that: The bottom of the main base plate (2) is embedded with first conductive sheets (10) corresponding one to one with the two support plates (901), and the two first conductive sheets (10) are respectively electrically connected to two power input leads of the main laser cavity (3); Second conductive sheets (11) corresponding one to one with the two support plates (901) are embedded at the bottom of the auxiliary bottom plate (5), and the two second conductive sheets (11) are electrically connected to two power input leads of the auxiliary laser cavity (6) respectively; Conductive heads (12) are fixed on the top of the two support plates (901), and the two conductive heads (12) are electrically connected to the positive pole and the negative pole of the external power supply respectively.

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