An expandable cavity expander-assisted inhalation device

Abstract

This invention relates to the field of inhalation devices, specifically an expandable cavity expander-assisted inhalation device, comprising a storage cylinder, an auxiliary inhalation mechanism, a rotating mechanism, a rotating limiting mechanism, and an auxiliary clamping mechanism. The auxiliary inhalation mechanism is located inside the storage cylinder, the rotating mechanism is located below the storage cylinder, the rotating limiting mechanism is located behind the rotating mechanism, and the auxiliary clamping mechanism is located below the rotating mechanism. A suction nozzle is fixedly connected to one inner wall of the storage cylinder, eliminating the need for manual inhalation and exhalation by medical personnel, reducing their workload. The storage cylinder volume can be adjusted as needed to prevent excessive movement of the sealing pusher, which could lead to unnecessary harm. The storage cylinder can be fixed as needed, and its position and angle can be adjusted to facilitate the insertion of scalp vein needles into the expander without requiring medical personnel to retrieve the device, further reducing their workload.

Description

Technical Field

[0001] This invention relates to the field of inhalation devices, specifically to an expander-assisted inhalation device with an expandable cavity. Background Technology

[0002] An expander is a device that applies pressure to the skin and soft tissue. Clinically used expanders are mainly controllable expanders made of silicone rubber, consisting of an expander sac, an injection port, and a connecting catheter. An inhaler is an instrument used to inhale gas, vapor, or air, such as a ventilator or inspirator.

[0003] When using expanders clinically, it is generally necessary to inject about 50-800 ml of air. First, the syringe is connected to the scalp needle, and medical staff inject air into the expander through the scalp needle to make the expander expand. Due to the pressure of the skin tissue, it becomes increasingly difficult to inject air, and it is also difficult to extract the air from the expander. This is not conducive to rapid air replenishment and degassing. Therefore, it is necessary to propose an expander-assisted inhalation device with an expandable cavity. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides an expander-assisted inhalation device with an expandable cavity.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an expandable cavity expander-assisted inflator, including a storage cylinder, an auxiliary inflator mechanism, a rotating mechanism, a rotating limiting mechanism, and an auxiliary clamping mechanism. The auxiliary inflator mechanism is provided inside the storage cylinder, the rotating mechanism is provided below the storage cylinder, the rotating limiting mechanism is provided behind the rotating mechanism, the auxiliary clamping mechanism is provided below the rotating mechanism, and a suction nozzle is fixedly connected to one inner wall of the storage cylinder, with one end of the suction nozzle extending through to the outside of the storage cylinder.

[0006] Specifically, the auxiliary inflation / inhalation mechanism includes a fixed bracket. A fixed bracket is fixedly connected to one outer wall of the storage cylinder. A threaded rod is rotatably connected to one inner wall of the fixed bracket. A nut is threadedly connected to the outer wall of the threaded rod. Push rods are symmetrically fixedly connected to one outer wall of the nut. One end of each push rod extends through into the storage cylinder and is fixedly connected to a sealing cone. The sealing cone is slidably connected to the storage cylinder. A circular stop block is slidably connected to the inner wall of the storage cylinder on one side of the sealing cone. Limiting grooves are formed through the inner walls of both ends of the fixed bracket. Limiting sliders are fixedly connected to the outer walls of the nut relative to the limiting grooves. One end of each limiting slider extends into the corresponding limiting groove. A screw is rotatably connected to one outer wall of the circular stop block. One end of the screw extends through into the outside of the storage cylinder and is fixedly connected to a handle.

[0007] Specifically, the rotating mechanism includes a supporting slider and a mounting block. The mounting block is fixedly connected to the lower surface of the storage cylinder. The supporting slider is located below the mounting block. A moving groove is formed through the upper surface of the supporting slider. A moving block is slidably connected to the inner wall of the moving groove, and one end of the moving block extends outside the moving groove. A circular hole is formed through the upper surface of the moving block. A slider is slidably connected to the inner wall of the circular hole, and one end of the slider extends outside the moving block and is fixedly connected to the mounting block.

[0008] Specifically, the rotation limiting mechanism includes a limiting ring block. The limiting ring block is fixedly connected to the outer wall of one end of the slider located inside the moving block. A limiting cavity is symmetrically opened through one end of the moving block located inside the moving groove. Limiting blocks are slidably connected to the inner walls of both limiting cavities. Several limiting holes are equidistantly opened through the inner walls of both sides of the moving groove relative to the positions of the limiting blocks. One end of each of the two limiting blocks extends through into the corresponding limiting hole. One end of each of the two limiting blocks extends through into the moving block and is inclined and abuts against the limiting ring block. Several auxiliary limiting grooves are equidistantly opened around the position of the slider. Auxiliary limiting blocks are slidably connected to the inner walls of the several auxiliary limiting grooves. One end of each of the several auxiliary limiting blocks extends outside the corresponding auxiliary limiting groove and abuts against the slider.

[0009] Specifically, the auxiliary clamping mechanism includes a support block, the lower surface of the support slider is fixedly connected to the support block, a T-shaped groove is formed through one side of the outer wall of the support block, a first T-shaped slider and a second T-shaped slider are slidably connected to the inner wall of the T-shaped groove, one end of the first T-shaped slider extends out of the T-shaped groove and is fixedly connected to a first clamping block, and one end of the second T-shaped slider extends out of the T-shaped groove and is fixedly connected to a second clamping block.

[0010] Specifically, a drive motor is fixedly connected to one side of the outer wall of the fixed bracket via a motor mounting bracket. One end of the threaded rod extends through a bearing to the outside of the fixed bracket and is fixedly connected to the drive motor via a coupling. A limit rod is fixedly connected to one side of the outer wall of the annular stop block, and one end of the limit rod extends through to the outside of the storage cylinder. The limit rod and the threaded rod are symmetrically arranged with respect to the center point.

[0011] Specifically, one end of each of the two limiting blocks located in the limiting cavity is fixedly connected to a first spring, and the other end of each of the two first springs is fixedly connected to a moving block. One outer wall of each of the several auxiliary limiting blocks located in the auxiliary limiting groove is fixedly connected to a second spring, and the other end of each of the several second springs is fixedly connected to a moving block.

[0012] Specifically, a rotating screw is rotatably connected to the outer wall of one end of the first T-shaped slider located in the T-shaped groove. One end of the rotating screw extends through a screw hole to the outside of the support block and is fixedly connected to a rotating handle. A third spring is fixedly connected to the outer wall of one end of the second T-shaped slider located in the T-shaped groove, and the other end of the third spring is fixedly connected to the support block.

[0013] The beneficial effects of this invention are: (1) The expandable cavity expander-assisted inhaler of the present invention moves the screw and the ring stop by the handle, moves the ring stop to the required position, starts the drive motor to drive the threaded rod to rotate, and drives the nut, push rod and sealing cone to move outward through the threaded rod. The sealing cone moves in the storage cylinder and sucks out the air in the expander through the suction nozzle until the sealing cone and the ring stop are against each other. When venting, the drive motor is started to drive the threaded rod to rotate in the opposite direction, and the push rod pushes the sealing push block to vent the air out of the storage cylinder. There is no need for medical staff to manually inhale and vent, which reduces the workload of medical staff. The volume of the storage cylinder can be adjusted as needed to prevent the sealing push block from moving too much and causing unnecessary harm.

[0014] (2) The expandable cavity expander-assisted inhalation device of the present invention fixes the storage cylinder to one side of the bed board by the first clamp and the second clamp. The storage cylinder moves the slider and the limiting slider upward. The third spring pushes the limiting block to move out of the limiting hole. The slider drives the storage cylinder to move and adjust the position of the storage cylinder. The storage cylinder can be rotated and the angle of the storage cylinder can be adjusted. After the adjustment is completed, the second spring pushes the auxiliary limiting block to move out of the auxiliary limiting groove to limit the slider. The storage cylinder can be fixed according to the needs, and the position and angle of the storage cylinder can be adjusted. It is convenient to insert the scalp needle into the expander without the need for medical staff to take the device for suction, thus reducing the workload of medical staff. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 A partial cross-sectional view of an expander-assisted inflator with an expandable cavity provided by the present invention; Figure 2 A front view schematic diagram of an expander-assisted inhalation device with an expandable cavity provided by the present invention; Figure 3 A cross-sectional view of the support block of an expander-assisted inflator with an expandable cavity provided by the present invention; Figure 4 A front view schematic diagram of the support block structure of an expander-assisted inhaler with an expandable cavity provided by the present invention; Figure 5A front view schematic diagram of the support slider structure of an expander-assisted inflator with an expandable cavity provided by the present invention; Figure 6 A partial cross-sectional view of the moving block of an expander-assisted inflator with an expandable cavity provided by the present invention; Figure 7 This is a partial cross-sectional view of the storage cylinder of an expander-assisted inflator with an expandable cavity, as provided by the present invention.

[0017] In the diagram: 1. Storage cylinder; 2. Auxiliary inflation / inhalation mechanism; 21. Fixed bracket; 22. Threaded rod; 23. Nut; 24. Push rod; 25. Sealing cone block; 26. Circular stop block; 27. Limiting groove; 28. Limiting slider; 29. ​​Screw; 210. Handle; 3. Rotation mechanism; 31. Support slider; 32. Mounting block; 33. Moving groove; 34. Moving block; 35. Slider; 4. Rotation limiting mechanism; 41. Limiting ring block; 42. 43. Limiting cavity; 44. Limiting block; 45. Limiting hole; 46. Auxiliary limiting groove; 57. Auxiliary limiting block; 58. Auxiliary clamping mechanism; 59. Support block; 50. T-shaped slide; 51. First T-shaped slider; 52. Second T-shaped slider; 53. First clamping block; 54. Second clamping block; 55. Suction nozzle; 60. Drive motor; 71. Limiting rod; 82. First spring; 93. Second spring; 10. Rotating screw; 11. Rotating handle; 12. Third spring. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-7 As shown, the expandable cavity expander-assisted inflator of the present invention includes a storage cylinder 1, an auxiliary inflator 2, a rotating mechanism 3, a rotating limiting mechanism 4, and an auxiliary clamping mechanism 5. The auxiliary inflator 2 is provided inside the storage cylinder 1. The rotating mechanism 3 is provided below the storage cylinder 1. The rotating limiting mechanism 4 is provided behind the rotating mechanism 3. The auxiliary clamping mechanism 5 is provided below the rotating mechanism 3. A suction nozzle 6 is fixedly connected to one inner wall of the storage cylinder 1, and one end of the suction nozzle 6 extends through to the outside of the storage cylinder 1.

[0020] The auxiliary inflation / inhalation mechanism 2 includes a fixed bracket 21. The fixed bracket 21 is fixedly connected to one outer wall of the storage cylinder 1. A threaded rod 22 is rotatably connected to one inner wall of the fixed bracket 21. A nut 23 is threadedly connected to the outer wall of the threaded rod 22. Push rods 24 are symmetrically fixedly connected to one outer wall of the nut 23. One end of each push rod 24 extends into the storage cylinder 1 and is fixedly connected to a sealing cone 25. The sealing cone 25 is slidably connected to the storage cylinder 1. A circular stop block 26 is slidably connected to the inner wall of the storage cylinder 1 on one side of the sealing cone 25. Limiting grooves 27 are opened through the inner walls of both ends of the fixed bracket 21. Limiting sliders 28 are fixedly connected to the outer wall of the nut 23 relative to the position of the limiting grooves 27. One end of each limiting slider 28 extends into the corresponding limiting groove 27. A screw 29 is rotatably connected to one outer wall of the circular stop block 26. One end of the screw 29 extends into the outside of the storage cylinder 1 and is fixedly connected to a handle 210.

[0021] The rotating mechanism 3 includes a supporting slider 31 and a mounting block 32. The mounting block 32 is fixedly connected to the lower surface of the storage cylinder 1. The supporting slider 31 is located below the mounting block 32. A moving groove 33 is opened through the upper surface of the supporting slider 31. A moving block 34 is slidably connected to the inner wall of the moving groove 33. One end of the moving block 34 extends out of the moving groove 33. A circular hole is opened through the upper surface of the moving block 34. A slider 35 is slidably connected to the inner wall of the circular hole. One end of the slider 35 extends out of the moving block 34 and is fixedly connected to the mounting block 32.

[0022] The rotation limiting mechanism 4 includes a limiting ring block 41. The outer wall of one end of the slider 35 located inside the moving block 34 is fixedly connected to the limiting ring block 41. One end of the moving block 34 located inside the moving groove 33 is symmetrically provided with limiting cavities 42. The inner walls of the two limiting cavities 42 are slidably connected with limiting blocks 43. The inner walls of both sides of the moving groove 33 are provided with several limiting holes 44 at equal intervals relative to the positions of the limiting blocks 43. One end of each of the two limiting blocks 43 extends through into the corresponding limiting hole 44. One end of each of the two limiting blocks 43 extends through into the moving block 34 and is inclined and abuts against the limiting ring block 41. The moving block 34 located around the slider 35 is provided with several auxiliary limiting grooves 45 at equal intervals. The inner walls of the several auxiliary limiting grooves 45 are slidably connected with auxiliary limiting blocks 46. One end of each of the several auxiliary limiting blocks 46 extends out of the corresponding auxiliary limiting groove 45 and abuts against the slider 35.

[0023] The auxiliary clamping mechanism 5 includes a support block 51. The support block 51 is fixedly connected to the lower surface of the support slider 31. A T-shaped groove 52 is opened through one side of the outer wall of the support block 51. A first T-shaped slider 53 and a second T-shaped slider 54 are slidably connected to the inner wall of the T-shaped groove 52 respectively. One end of the first T-shaped slider 53 extends to the outside of the T-shaped groove 52 and is fixedly connected to a first clamping block 55. One end of the second T-shaped slider 54 extends to the outside of the T-shaped groove 52 and is fixedly connected to a second clamping block 56.

[0024] Among them, a drive motor 7 is fixedly connected to one side of the outer wall of the fixed bracket 21 through a motor mounting bracket. One end of the threaded rod 22 extends through the bearing to the outside of the fixed bracket 21 and is fixedly connected to the drive motor 7 through a coupling. A limit rod 8 is fixedly connected to one side of the outer wall of the annular stop block 26, and one end of the limit rod 8 extends through the storage cylinder 1. The limit rod 8 and the screw 29 are symmetrically arranged with respect to the center point.

[0025] Among them, one end of each of the two limiting blocks 43 located in the limiting cavity 42 is fixedly connected to a first spring 9, and the other end of each of the two first springs 9 is fixedly connected to the moving block 34. One end of each of the several auxiliary limiting blocks 46 located in the auxiliary limiting groove 45 is fixedly connected to a second spring 10, and the other end of each of the several second springs 10 is fixedly connected to the moving block 34.

[0026] The first T-shaped slider 53 is rotatably connected to a rotating screw 11 on one end of its outer wall within the T-shaped groove 52. One end of the rotating screw 11 extends through a screw hole to the outside of the support block 51 and is fixedly connected to a rotating handle 12. The second T-shaped slider 54 is fixedly connected to a third spring 13 on one end of its outer wall within the T-shaped groove 52, and the other end of the third spring 13 is fixedly connected to the support block 51.

[0027] In use, the drive motor 7 is connected to an external power source via a controller, the suction nozzle 6 is connected to the scalp needle, and the first clamping block 55 and the second clamping block 56 are placed on the side of the bed board that needs to be adjusted. The third spring 13 pushes the second T-shaped slider 54 downward within the T-shaped groove 52 of the support block 51. The second T-shaped slider 54 pushes the second clamping block 56 against the side of the bed board. The rotating handle 12 drives the rotating screw 11 to rotate upward, which in turn drives the first T-shaped slider 53 and the first clamping block 55 to move upward, so that the first clamping block 55 and the second clamping block 56 together clamp and fix the bed board. When it is necessary to adjust the height of the storage cylinder 1, the rotating handle 12 drives the rotating screw 11 to rotate upward, and the first clamping block 55 pushes the bed board downward. The second clamping block 56 moves upward and squeezes the third spring 13, lowering the height of the storage cylinder 1. After the height adjustment is completed, the storage cylinder 1 moves upward, causing the connected slider 35 and the limiting ring block 41 to move upward. The limiting ring block 41 separates from the limiting block 43. The auxiliary limiting block 46 blocks the limiting ring block 41 to prevent it from moving out of the moving block 34. The first spring 9 pushes the limiting block 43 out of the limiting hole 44 opened in the supporting slider 31. The storage cylinder 1 drives the moving block 34 to move within the moving groove 33 opened in the supporting slider 31, adjusting the position of the storage cylinder 1. After the adjustment is completed, the storage cylinder 1 pushes the limiting ring block 41 back to its original position, and the limiting ring block 41 pushes the limiting block 43 to insert into the limiting position. The moving block 34 is limited within the hole 44, and the first spring 9 is compressed. The scalp needle on one side of the storage cylinder 1 is inserted into the expander, allowing the storage cylinder 1 to rotate. The storage cylinder 1 drives the slider 35 to rotate within the moving block 34. As the slider 35 rotates, it presses inward against the auxiliary limiting block 46, causing the auxiliary limiting block 46 to move into the auxiliary limiting groove 45 and compress the second spring 10. After adjusting the angle of the storage cylinder 1, the auxiliary limiting block 46, which has not yet moved into the auxiliary limiting groove 45, limits the slider 35, preventing the storage cylinder 1 from rotating arbitrarily. After adjustment, the screw 29 is rotated via the handle 210. The screw 29 drives the annular stop block 26 to move within the storage cylinder 1, and the annular stop block 26 simultaneously drives the limiting rod 8 to move, according to the required amount to be extracted. Move the annular stop 26 to the desired position and start the drive motor 7. The drive motor 7 drives the threaded rod 22 to rotate. The threaded rod 22 drives the limiting slider 28 and the push rod 24 to move through the nut 23. The limiting slider 28 moves in the limiting groove 27. The push rod 24 drives the sealing cone 25 to move outward. The air in the expander is drawn into the storage cylinder 1 through the suction nozzle 6. When the air in the storage cylinder 1 gradually reaches the required amount, the sealing cone 25 abuts against the annular stop 26. The annular stop 26 blocks the sealing cone 25. When releasing the air, the drive motor 7 drives the threaded rod 22 to rotate in the opposite direction. The threaded rod 22 drives the nut 23, the push rod 24 and the sealing cone 25 to move outward. The sealing cone 25 pushes the air out.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An expandable cavity expander-assisted inhalation device, comprising a storage cylinder (1), an auxiliary inhalation mechanism (2), a rotation mechanism (3), a rotation limiting mechanism (4), and an auxiliary clamping mechanism (5), characterized in that, The storage cylinder (1) is equipped with an auxiliary air intake mechanism (2) inside. A rotating mechanism (3) is located below the storage cylinder (1). A rotation limiting mechanism (4) is located behind the rotating mechanism (3). An auxiliary clamping mechanism (5) is located below the rotating mechanism (3). A suction nozzle (6) is fixedly connected to one inner wall of the storage cylinder (1), and one end of the suction nozzle (6) extends through to the outside of the storage cylinder (1). The rotating mechanism (3) includes a supporting slider (31) and a mounting block (32). A mounting block (32) is fixedly connected to the lower surface of the storage cylinder (1). The mounting block (32) has a support slider (31) below it. The upper surface of the support slider (31) has a through-hole (33). The inner wall of the through-hole (33) is slidably connected to a moving block (34), and one end of the moving block (34) extends out of the through-hole (33). The upper surface of the moving block (34) has a through-hole (35), and the inner wall of the hole (35) is slidably connected to a slider (35). One end of the slider (35) extends out of the moving block (34) and is fixedly connected to the mounting block (32).

2. The expander-assisted inhalation device with an expandable cavity according to claim 1, characterized in that: The auxiliary inflation / inhalation mechanism (2) includes a fixed bracket (21). The fixed bracket (21) is fixedly connected to one outer wall of the storage cylinder (1). A threaded rod (22) is rotatably connected to one inner wall of the fixed bracket (21). A nut (23) is threadedly connected to the outer wall of the threaded rod (22). Push rods (24) are symmetrically fixedly connected to one outer wall of the nut (23). One end of each of the two push rods (24) extends through into the storage cylinder (1) and is fixedly connected to a sealing cone (25). The sealing cone (25) is slidably connected to the storage cylinder (1). The inner wall of the storage cylinder (1) is slidably connected to a circular stop block (26) on one side of the sealing cone block (25). The inner walls of both ends of the fixed bracket (21) are provided with limit grooves (27). The outer wall of the nut (23) is fixedly connected to a limit slider (28) relative to the position of the limit groove (27). One end of each of the two limit sliders (28) extends into the corresponding limit groove (27). One end of the outer wall of the circular stop block (26) is rotatably connected to a screw (29). One end of the screw (29) extends through to the outside of the storage cylinder (1) and is fixedly connected to a handle (210).

3. The expander-assisted inhalation device with an expandable cavity according to claim 1, characterized in that: The rotation limiting mechanism (4) includes a limiting ring block (41). The outer wall of one end of the slider (35) located inside the moving block (34) is fixedly connected to the limiting ring block (41). One end of the moving block (34) located inside the moving groove (33) is symmetrically provided with a limiting cavity (42). The inner walls of the two limiting cavities (42) are slidably connected with limiting blocks (43). The inner walls on both sides of the moving groove (33) are provided with a plurality of limiting holes (44) at equal intervals relative to the limiting blocks (43). One end of each of the two limiting blocks (43) is provided with a limiting hole (44). The two limiting blocks (43) extend through to the corresponding limiting hole (44), and one end of each limiting block (43) extends through to the moving block (34) and is inclined and abuts against the limiting ring block (41). The moving block (34) is located at the position of the slider (35) and has several auxiliary limiting grooves (45) equidistantly extending around it. The inner walls of the several auxiliary limiting grooves (45) are slidably connected with auxiliary limiting blocks (46), and one end of each auxiliary limiting block (46) extends out of the corresponding auxiliary limiting groove (45) and abuts against the slider (35).

4. The expander-assisted inhalation device with an expandable cavity according to claim 1, characterized in that: The auxiliary clamping mechanism (5) includes a support block (51). The support block (51) is fixedly connected to the lower surface of the support slider (31). A T-shaped groove (52) is opened through one side of the outer wall of the support block (51). A first T-shaped slider (53) and a second T-shaped slider (54) are slidably connected to the inner wall of the T-shaped groove (52). One end of the first T-shaped slider (53) extends to the outside of the T-shaped groove (52) and is fixedly connected to a first clamping block (55). One end of the second T-shaped slider (54) extends to the outside of the T-shaped groove (52) and is fixedly connected to a second clamping block (56).

5. The expander-assisted inhalation device with an expandable cavity according to claim 2, characterized in that: A drive motor (7) is fixedly connected to one side of the outer wall of the fixed bracket (21) via a motor mounting bracket. One end of the threaded rod (22) extends through the bearing to the outside of the fixed bracket (21) and is fixedly connected to the drive motor (7) via a coupling. A limit rod (8) is fixedly connected to one side of the outer wall of the annular stop block (26), and one end of the limit rod (8) extends through the storage cylinder (1). The limit rod (8) and the screw (29) are symmetrically arranged relative to the center point.

6. The expander-assisted inhalation device with an expandable cavity according to claim 3, characterized in that: One end of each of the two limiting blocks (43) located in the limiting cavity (42) is fixedly connected to a first spring (9), and the other end of each of the two first springs (9) is fixedly connected to a moving block (34). One end of each of the auxiliary limiting blocks (46) located in the auxiliary limiting groove (45) is fixedly connected to a second spring (10), and the other end of each of the several second springs (10) is fixedly connected to a moving block (34).

7. The expander-assisted inhalation device with an expandable cavity according to claim 4, characterized in that: The first T-shaped slider (53) is rotatably connected to a rotating screw (11) on one end of its outer wall within the T-shaped groove (52). One end of the rotating screw (11) extends through a screw hole to the outside of the support block (51) and is fixedly connected to a rotating handle (12). The second T-shaped slider (54) is fixedly connected to a third spring (13) on one end of its outer wall within the T-shaped groove (52), and the other end of the third spring (13) is fixedly connected to the support block (51).

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