Improved two-stage current stabilizer

Abstract

The invention relates to the technical field of current stabilizers, discloses an improved secondary current stabilizer, and solves the problems that an existing large secondary current stabilizer is very inconvenient to position and install due to relatively large size and mass, is poor in protection capability and is easy to damage when being impacted by external force, so that the normal operation of a circuit is influenced. The large secondary current stabilizer comprises a mounting base, supporting legs are fixedly mounted at four corners of the bottom of the mounting base, a protective cover is arranged on one side of the upper portion of the mounting base, a large secondary current stabilizer body is arranged in the mounting base, and positioning buckles are fixedly mounted on two sides of the surface of the large secondary current stabilizer body. Two pressing rods are symmetrically and rotatably mounted on two sides of the upper part in the mounting seat through two rotating shafts; the large secondary current stabilizer is very convenient to position and install, the labor amount of workers is reduced, the installation efficiency is improved, the protection capability is good, the service life is prolonged, and the normal operation of a circuit is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of current stabilizers, and in particular relates to an improved secondary current stabilizer. Background Art

[0002] A large-scale secondary current stabilizer is a device that can provide a constant and adjustable large current output; in some complex circuit systems, multi-stage current stabilization may be required to further improve the stability of the current; in this case, the secondary current stabilizer is the second current stabilizer connected in series or parallel in the circuit, which is used to further stabilize the current that has been processed by the primary current stabilization; this design is usually used in application scenarios with extremely high requirements for current stability. It can maintain the stability of the output current when the input voltage and load impedance change, thereby protecting the load device from the influence of current fluctuations and ensuring the normal operation of the circuit and system; the existing large-scale secondary current stabilizer is very inconvenient to locate and install due to its large size and mass, and its protection ability is poor. It is easy to be damaged when it is hit by external force, thereby affecting the normal operation of the circuit. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an improved secondary current stabilizer, which effectively solves the problem that the existing large-scale secondary current stabilizer in the above background technology is very inconvenient to position and install due to its large size and mass, and has poor protection ability, and is easily damaged when impacted by external force, thereby affecting the normal operation of the circuit.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an improved secondary current stabilizer, comprising a mounting seat, wherein the four corners of the bottom of the mounting seat are fixedly mounted with support legs, a protective cover is provided on one side of the upper part of the mounting seat, a large secondary current stabilizer body is provided inside the mounting seat, and positioning buckles are fixedly installed on both sides of the surface of the large secondary current stabilizer body, two clamping rods are symmetrically rotated by two rotating shafts on both sides of the upper part of the mounting seat, and gravity balls are fixedly installed on the bottom ends of the two clamping rods, a support frame is fixedly installed on the upper side of the rear part of the mounting seat, and the middle part of the upper part of the support frame is fixed A first shaft sleeve is installed, and a first shaft rod is rotatably installed inside the first shaft sleeve. A crank is fixedly installed on one end of the first shaft rod, and a transmission assembly is provided on the end of the first shaft rod away from the crank. The transmission assembly is connected to the protective cover and two clamping rods through transmission. When the crank drives the first shaft rod to rotate, the first shaft rod outputs power to the protective cover and the two clamping rods through the transmission assembly, so that the protective cover rotates and closes to cover the large secondary current stabilizer body for protection, and the two clamping rods rotate to clamp the two positioning buckles on the large secondary current stabilizer body, so as to quickly install and position the large secondary current stabilizer body.

[0005] Preferably, the transmission assembly includes a first sprocket and two connecting frames, the first sprocket is fixedly mounted on the end of the first shaft away from the crank, the two connecting frames are fixedly mounted on both sides of the rear lower part of the mounting seat, one side of the two connecting frames is rotatably mounted with a second sprocket, the two second sprockets are meshed and connected with the first sprocket by a chain, and one side of the first sprocket is fixedly mounted with a first bevel gear.

[0006] Preferably, a second bevel gear is meshedly connected to one side of the surface of the first bevel gear, a second shaft rod is fixedly installed in the middle of the second bevel gear, two second shaft sleeves are rotatably installed on the surface of the second shaft rod, the bottoms of the two second shaft sleeves are fixedly connected to the top of the mounting seat through a fixing block, a positioning frame is rotatably installed between the two ends of the second shaft rod, support arms are fixedly installed on both ends of the surface of the second shaft rod through a fixing sleeve, and one end of the two support arms is fixedly connected to the protective cover.

[0007] Preferably, a third shaft rod is fixedly installed on the side of the second sprocket away from the connecting frame, one end of the two third shaft rods extends to the interior of the mounting seat and a third bevel gear is fixedly installed on each of them, and a third shaft sleeve is rotatably installed on the surface of the two third shaft rods, and the bottom of the third shaft sleeve is fixedly connected to the inner bottom of the mounting seat.

[0008] Preferably, one side of the surface of the third bevel gear is meshedly connected with a fourth bevel gear, the ends of the two fourth bevel gears that are away from each other are rotatably mounted on a fixed seat through an axle seat, the bottoms of the two fixed seats are fixedly connected to the inner bottom of the mounting seat, the sides of the two fourth bevel gears that are close to each other are fixedly mounted with threaded rods, the ends of the two threaded rods that are close to each other are rotatably mounted with positioning seats, and the bottoms of the two positioning seats are fixedly connected to the inner bottom of the mounting seat.

[0009] Preferably, the surface of the threaded rod is threadedly connected with a threaded sleeve, the bottom of the two threaded sleeves are fixedly installed with a first slider through a connecting block, and first sliding grooves are opened on both sides of the bottom of the mounting seat, and the two first sliding grooves are respectively slidably installed inside the two first sliding grooves.

[0010] Preferably, a support column is fixedly installed on the top of the threaded sleeve, and a pushing plate is fixedly installed on the top of the two support columns.

[0011] Preferably, the upper surfaces of the pushing plates are closely attached to rollers, rotating frames are rotatably mounted on the surfaces of the two rollers, a transmission platform is fixedly mounted between the tops of the two rotating frames, and the upper surfaces of the transmission platform are in contact with the gravity balls at the bottoms of the two clamping rods.

[0012] Preferably, connecting rods are fixedly installed on both the front and rear sides of the transmission platform, and a second slider is fixedly installed on one end of the connecting rod away from the transmission platform. Second sliding grooves are opened on the inner walls of both the front and rear sides of the mounting seat, and two second sliders are slidably installed inside the two second sliding grooves.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) During operation, the operator places the large secondary current stabilizer body into the mounting seat, and then the operator rotates the crank to drive the first shaft rod to rotate along the inside of the first sleeve on the support frame. When the first shaft rod rotates, it drives the first sprocket to rotate. When the first sprocket rotates, it drives the two second sprockets to rotate along the two connecting frames through the chain. When the first sprocket rotates, it drives the second bevel gear to rotate through the first bevel gear. When the second bevel gear rotates, it drives the second shaft rod to rotate along the positioning frame and the two second sleeves. When the second shaft rod rotates, it drives the protective cover to rotate and close through the two fixed sleeves and the two support arms, so as to cover and protect the large secondary current stabilizer body to avoid damage to the large secondary current stabilizer body caused by accidental collision;

[0015] (2) When the two second sprockets rotate, they drive the two third shaft rods to rotate along the inside of the third shaft sleeve. When the two third shaft rods rotate, they drive the fourth bevel gear to rotate along the shaft seat on the fixed seat through the third bevel gear. When the fourth bevel gear rotates, they drive the threaded rod to rotate along the positioning seat. When the two threaded rods rotate, they drive the two threaded sleeves on their surfaces to move toward each other. When the two threaded sleeves move, they drive the first slider to slide along the inside of the first slide groove through the connecting block, thereby increasing the stability of the two threaded sleeves when they move. When the two threaded sleeves move toward each other, they drive the two pushing plates to move toward each other through the support column. When the two pushing plates move toward each other, they push the transmission platform upward through the two rollers and the two rotating frames. When the transmission platform moves, the two second slide blocks are driven to slide along the inside of the two second slide grooves through the two connecting rods, thereby increasing the stability of the transmission platform when it moves. When the transmission platform moves upward, the two clamping rods are pushed to rotate along the two rotating shafts through the two gravity balls. The setting of the two gravity balls can make the two clamping rods reset by gravity rotation. When the two clamping rods rotate, the two positioning buckles on the large secondary current stabilizer body are pressed, thereby positioning and fixing the large secondary current stabilizer body, thereby quickly completing the installation.

[0016] (3) The large-scale secondary current stabilizer is very convenient to locate and install, which reduces the workload of the staff and improves the installation efficiency. In addition, it has good protection capability, increases its service life, and ensures the normal operation of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture:

[0019] Figure 1This is a schematic diagram of the internal structure of the mounting base of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0021] Figure 3 This is a schematic diagram of the rear view structure of the improved secondary current stabilizer of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of a partial cross-sectional structure;

[0023] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0024] Figure 6 For the present invention Figure 2 A schematic diagram of a local enlarged structure;

[0025] Figure 7 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0026] In the figure: 1, mounting base; 2, supporting leg; 3, protective cover; 4, clamping rod; 5, rotating shaft; 6, supporting frame; 7, first shaft sleeve; 8, first shaft rod; 9, crank; 10, first sprocket; 11, first bevel gear; 12, second bevel gear; 13, second shaft rod; 14, second shaft sleeve; 15, fixing block; 16, supporting arm; 17, positioning frame; 18, connecting frame; 19, second sprocket; 20, chain; 21, third shaft rod; 22, third shaft sleeve; 23, third bevel gear Gear; 24, fourth bevel gear; 25, shaft seat; 26, fixed seat; 27, threaded rod; 28, threaded sleeve; 29, connecting block; 30, first slider; 31, support column; 32, pushing plate; 33, positioning seat; 34, first slide groove; 35, roller; 36, rotating frame; 37, transmission platform; 38, large secondary current stabilizer body; 39, positioning buckle; 40, gravity ball; 41, fixed sleeve; 42, connecting rod; 43, second slider; 44, second slide groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Embodiment 1, by Figures 1 to 7The present invention includes a mounting seat 1, the four corners of the bottom of the mounting seat 1 are fixedly installed with support legs 2, a protective cover 3 is provided on one side of the upper part of the mounting seat 1, a large-scale secondary current stabilizer body 38 is provided inside the mounting seat 1, and positioning buckles 39 are fixedly installed on both sides of the surface of the large-scale secondary current stabilizer body 38, two clamping rods 4 are symmetrically rotated and installed on both sides of the upper part of the mounting seat 1 through two rotating shafts 5, and gravity balls 40 are fixedly installed on the bottom ends of the two clamping rods 4, a support frame 6 is fixedly installed on the upper side of the rear of the mounting seat 1, and a first shaft sleeve 7 is fixedly installed in the middle of the upper part of the support frame 6, and the first shaft sleeve 7 A first shaft rod 8 is rotatably installed inside, and a crank 9 is fixedly installed on one end of the first shaft rod 8. A transmission assembly is provided at the end of the first shaft rod 8 away from the crank 9. The transmission assembly is connected to the protective cover 3 and the two clamping rods 4 through transmission. When the crank 9 drives the first shaft rod 8 to rotate, the first shaft rod 8 outputs power to the protective cover 3 and the two clamping rods 4 through the transmission assembly, so that the protective cover 3 rotates and closes to cover the large secondary current stabilizer body 38 for protection, and the two clamping rods 4 rotate to clamp the two positioning buckles 39 on the large secondary current stabilizer body 38, so as to quickly install and position the large secondary current stabilizer body 38.

[0029] During operation, the operator places the large secondary current stabilizer body 38 into the mounting seat 1, and then rotates the crank 9 to drive the first shaft rod 8 to rotate along the inside of the first shaft sleeve 7 on the support frame 6. When the first shaft rod 8 rotates, it drives the transmission assembly to operate. When the transmission assembly operates, it drives the protective cover 3 to rotate and close, thereby covering and protecting the large secondary current stabilizer body 38 to avoid damage to the large secondary current stabilizer body 38 caused by accidental collision.

[0030] When the transmission assembly is running, the two clamping rods 4 will be pushed to rotate along the two rotating shafts 5 through the two gravity balls 40. The setting of the two gravity balls 40 can make the two clamping rods 4 reset by gravity rotation. When the two clamping rods 4 rotate, the two positioning buckles 39 on the large-scale secondary current stabilizer body 38 will be pressed, so that the large-scale secondary current stabilizer body 38 is positioned and fixed, and then the installation is completed quickly; making the positioning and installation of the large-scale secondary current stabilizer very convenient, reducing the workload of the staff, improving the installation efficiency, and having good protection ability, increasing its service life, and ensuring the normal operation of the circuit.

[0031] Embodiment 2, on the basis of embodiment 1, the transmission assembly includes a first sprocket 10 and two connecting frames 18, the first sprocket 10 is fixedly mounted on the end of the first shaft 8 away from the crank 9, the two connecting frames 18 are fixedly mounted on both sides of the lower rear portion of the mounting seat 1, one side of the two connecting frames 18 is rotatably mounted with a second sprocket 19, a chain 20 is meshedly connected between the two second sprockets 19 and the first sprocket 10, and a first bevel gear 11 is fixedly mounted on one side of the first sprocket 10; a second bevel gear 12 is meshedly connected to one side of the surface of the first bevel gear 11, a second shaft 13 is fixedly mounted in the middle of the second bevel gear 12, two second shaft sleeves 14 are rotatably mounted on the surface of the second shaft 13, the bottoms of the two second shaft sleeves 14 are fixedly connected to the top of the mounting seat 1 through a fixing block 15, a positioning frame 17 is rotatably mounted between the two ends of the second shaft 13, and support arms 16 are fixedly mounted on both ends of the surface of the second shaft 13 through a fixing sleeve 41, and one end of the two support arms 16 is fixedly connected to the protective cover 3.

[0032] When the first shaft rod 8 rotates, it drives the first sprocket 10 to rotate. When the first sprocket 10 rotates, it drives the two second sprockets 19 to rotate along the two connecting frames 18 through the chain 20. When the first sprocket 10 rotates, it drives the second bevel gear 12 to rotate through the first bevel gear 11. When the second bevel gear 12 rotates, it drives the second shaft rod 13 to rotate along the positioning frame 17 and the two second sleeves 14. When the second shaft rod 13 rotates, it drives the protective cover 3 to rotate and close through the two fixed sleeves 41 and the two support arms 16, so as to cover and protect the large secondary current stabilizer body 38 to avoid damage to the large secondary current stabilizer body 38 caused by accidental collision.

[0033] Embodiment 3, on the basis of embodiment 2, a third shaft rod 21 is fixedly installed on the side of the second sprocket 19 away from the connecting frame 18, one end of the two third shaft rods 21 extends to the inside of the mounting seat 1 and is fixedly installed with a third bevel gear 23, the surfaces of the two third shaft rods 21 are rotatably installed with a third shaft sleeve 22, and the bottom of the third shaft sleeve 22 is fixedly connected to the inner bottom of the mounting seat 1; one side of the surface of the third bevel gear 23 is meshed and connected with a fourth bevel gear 24, and the ends of the two fourth bevel gears 24 away from each other are rotatably installed with a fixed seat 26 through an axle seat 25, and the bottoms of the two fixed seats 26 are fixedly connected to the inner bottom of the mounting seat 1, and the sides of the two fourth bevel gears 24 close to each other are fixedly installed with a threaded rod 27, and the ends of the two threaded rods 27 close to each other are rotatably installed with a positioning seat 33, and the bottoms of the two positioning seats 33 are fixedly connected to the inner bottom of the mounting seat 1; the surface of the threaded rod 27 is threadedly connected with a threaded sleeve 2 8. The bottoms of the two threaded sleeves 28 are fixedly installed with a first slider 30 through a connecting block 29, and both sides of the bottom of the mounting seat 1 are provided with a first slide groove 34, and the two first sliders 30 are slidably installed in the inside of the two first slide grooves 34 respectively; the top of the threaded sleeve 28 is fixedly installed with a support column 31, and the top of the two support columns 31 is fixedly installed with a pushing plate 32; the upper surface of the pushing plate 32 is tightly attached to the roller 35, and the surfaces of the two rollers 35 are rotatably installed with a rotating frame 36, and a transmission platform 37 is fixedly installed between the tops of the two rotating frames 36, and the upper surface of the transmission platform 37 is in contact with the gravity balls 40 at the bottom of the two clamping rods 4; the front and rear sides of the transmission platform 37 are fixedly installed with a connecting rod 42, and the end of the connecting rod 42 away from the transmission platform 37 is fixedly installed with a second slider 43, and the inner walls of the front and rear sides of the mounting seat 1 are provided with a second slide groove 44, and the two second sliders 43 are slidably installed in the inside of the two second slide grooves 44.

[0034] When the two second sprockets 19 rotate, the two third shaft rods 21 are driven to rotate along the inside of the third shaft sleeve 22. When the two third shaft rods 21 rotate, they drive the fourth bevel gear 24 to rotate along the shaft seat 25 on the fixed seat 26 through the third bevel gear 23. When the fourth bevel gear 24 rotates, it drives the threaded rod 27 to rotate along the positioning seat 33. When the two threaded rods 27 rotate, they drive the two threaded sleeves 28 on the surface thereof to move toward each other. When the two threaded sleeves 28 move, they drive the first slider 30 along the inner side of the first slide groove 34 through the connecting block 29. The two threaded sleeves 28 are not slidable, which increases the stability of the two threaded sleeves 28 when they move toward each other. When the two threaded sleeves 28 move toward each other, they drive the two pushing plates 32 to move toward each other through the support column 31. When the two pushing plates 32 move toward each other, they push the transmission platform 37 upward through the two rollers 35 and the two rotating frames 36. When the transmission platform 37 moves, the two second sliding blocks 43 are driven by the two connecting rods 42 to slide along the inside of the two second sliding grooves 44, which increases the stability of the transmission platform 37 when it moves. When the transmission platform 37 moves upward, it pushes the two gravity balls 40.

[0035] 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.

[0036] 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. An improved secondary current stabilizer, comprising a mounting seat (1), characterized in that: The four corners of the bottom of the mounting seat (1) are fixedly mounted with support legs (2); a protective cover (3) is provided on one side of the upper part of the mounting seat (1); a large secondary current stabilizer body (38) is provided inside the mounting seat (1); positioning buckles (39) are fixedly mounted on both sides of the surface of the large secondary current stabilizer body (38); two clamping rods (4) are symmetrically rotatably mounted on both sides of the upper part of the mounting seat (1) through two rotating shafts (5); gravity balls (40) are fixedly mounted on the bottom ends of the two clamping rods (4); a support frame (6) is fixedly mounted on the upper side of the rear part of the mounting seat (1); a first shaft sleeve (7) is fixedly mounted in the middle of the upper part of the support frame (6); and the first shaft sleeve (7) is rotatably mounted inside. A first shaft (8) is provided, one end of which is fixedly mounted with a crank (9), and one end of the first shaft (8) away from the crank (9) is provided with a transmission assembly, which is transmission-connected to a protective cover (3) and two clamping rods (4). When the crank (9) drives the first shaft (8) to rotate, the first shaft (8) outputs power to the protective cover (3) and the two clamping rods (4) through the transmission assembly, so that the protective cover (3) rotates and closes to cover the large secondary current stabilizer body (38) for protection, and the two clamping rods (4) rotate and clamp two positioning buckles (39) on the large secondary current stabilizer body (38), so that the large secondary current stabilizer body (38) is quickly installed and positioned.

2. The improved secondary current stabilizer according to claim 1, characterized in that: The transmission assembly comprises a first sprocket (10) and two connecting frames (18), wherein the first sprocket (10) is fixedly mounted on an end of the first shaft (8) away from the crank (9), the two connecting frames (18) are fixedly mounted on both sides of the lower rear portion of the mounting seat (1), a second sprocket (19) is rotatably mounted on one side of the two connecting frames (18), a chain (20) is meshedly connected between the two second sprockets (19) and the first sprocket (10), and a first bevel gear (11) is fixedly mounted on one side of the first sprocket (10).

3. An improved secondary current stabilizer according to claim 2, characterized in that: A second bevel gear (12) is meshedly connected to one side of the surface of the first bevel gear (11); a second shaft rod (13) is fixedly mounted in the middle of the second bevel gear (12); two second shaft sleeves (14) are rotatably mounted on the surface of the second shaft rod (13); the bottoms of the two second shaft sleeves (14) are fixedly connected to the top of the mounting seat (1) via a fixing block (15); a positioning frame (17) is rotatably mounted between the two ends of the second shaft rod (13); support arms (16) are fixedly mounted on both ends of the surface of the second shaft rod (13) via fixing sleeves (41); one end of each of the two support arms (16) is fixedly connected to the protective cover (3).

4. The improved secondary current stabilizer according to claim 2, characterized in that: A third shaft rod (21) is fixedly mounted on the side of the second sprocket (19) away from the connecting frame (18); one end of each of the two third shaft rods (21) extends into the interior of the mounting seat (1) and is fixedly mounted with a third bevel gear (23); a third shaft sleeve (22) is rotatably mounted on the surface of the two third shaft rods (21); and the bottom of each of the third shaft sleeves (22) is fixedly connected to the inner bottom of the mounting seat (1).

5. The improved secondary current stabilizer according to claim 4, characterized in that: One side of the surface of the third bevel gear (23) is meshedly connected with a fourth bevel gear (24); the ends of the two fourth bevel gears (24) that are away from each other are rotatably mounted with a fixing seat (26) through a shaft seat (25); the bottoms of the two fixing seats (26) are fixedly connected to the inner bottom of the mounting seat (1); the sides of the two fourth bevel gears (24) that are close to each other are fixedly mounted with a threaded rod (27); the ends of the two threaded rods (27) that are close to each other are rotatably mounted with a positioning seat (33); the bottoms of the two positioning seats (33) are fixedly connected to the inner bottom of the mounting seat (1).

6. The improved secondary current stabilizer according to claim 5, characterized in that: The surface of the threaded rod (27) is threadedly connected with a threaded sleeve (28), and the bottom of the two threaded sleeves (28) is fixedly mounted with a first sliding block (30) through a connecting block (29). Both sides of the bottom of the mounting seat (1) are provided with a first sliding groove (34), and the two first sliding blocks (30) are slidably mounted inside the two first sliding grooves (34) respectively.

7. An improved secondary current stabilizer according to claim 6, characterized in that: A support column (31) is fixedly mounted on the top of each threaded sleeve (28), and a pushing plate (32) is fixedly mounted on the top of each of the two support columns (31).

8. The improved secondary current stabilizer according to claim 6, characterized in that: The upper surfaces of the pushing plates (32) are closely attached to rollers (35), the surfaces of the two rollers (35) are rotatably mounted with rotating frames (36), a transmission platform (37) is fixedly mounted between the tops of the two rotating frames (36), and the upper surfaces of the transmission platform (37) are in contact with the gravity balls (40) at the bottoms of the two pressing rods (4).

9. The improved secondary current stabilizer according to claim 8, characterized in that: Connecting rods (42) are fixedly mounted on both the front and rear sides of the transmission platform (37), and a second sliding block (43) is fixedly mounted on one end of the connecting rod (42) away from the transmission platform (37). Second sliding grooves (44) are provided on both the front and rear inner walls of the mounting seat (1), and the two second sliding blocks (43) are slidably mounted inside the two second sliding grooves (44).

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