Spring mattress provided with intelligent interval adjustment device

Abstract

The utility model provides a spring pad with intelligence interval adjusting device, including bottom plate, be equipped with a plurality of elastic support on the bottom plate, be equipped with support spring, interval connecting body on the elastic support, the interval connecting body top covers with face guard, and the surrounding edge can be connected with the bottom plate and face guard respectively through the pendant, interval adjusting device is equipped with in the spring pad and is connected with the elastic support, interval adjusting device includes transmission adjusting device, intelligent electric control system, transmission adjusting device includes tension adjusting device, elastic adjusting device, height adjusting device, interval connecting body includes combination block, tension spring, connecting soft belt. The utility model can reach the technical scheme that the utility model designs to spring pad, reach multifunctional adjustment, simplify structure design, reduce the use of material of having pollution, easy to concave deformation, easy aging etc.

Description

Technical Field

[0001] This utility model belongs to the field of household goods technology, specifically relating to a spring pad equipped with an intelligent interval adjustment device. Background Technology

[0002] Currently available spring pads on the market lack the ability to adjust the tension of the supporting springs in a timely manner due to the connection structure at the top of the springs not being able to adjust the support force or height in a timely manner when a certain area needs to be supported higher or lower, or when a certain area needs to have stronger or weaker support. This results in an inability to achieve a balanced and comfortable support effect for all parts of the body. Utility Model Content

[0003] To solve the above problems, this utility model provides a spring pad equipped with an intelligent interval adjustment device.

[0004] The technical solution of this utility model is implemented as follows: A spring pad with an intelligent interval adjustment device includes a base plate, a plurality of elastic supports on the base plate, a support spring and an interval connector on the elastic support, a face cover on the interval connector, a perimeter around the base plate, the perimeter being connected to the base plate and the face cover respectively by hanging parts, an intelligent interval adjustment device inside the spring pad, the intelligent interval adjustment device being connected to the elastic supports through the base plate, the intelligent interval adjustment device including a transmission adjustment device and an intelligent electronic control system, the transmission adjustment device including an adjustment screw, the intelligent electronic control system being connected to an electronic control box through a circuit, the interval connector including a combination block with a tension spring on the combination block, adjacent combination blocks being connected by a connecting soft strap that presses against each other and slides up and down, the connecting soft strap being connected to one end of the tension spring, the adjustment screw being connected to a nut and a bracket, and a connection hole on the base plate; Preferably, the assembly block includes assembly block D and assembly block E, which are spaced apart from each other. A bracket A is mounted on the lower side of the assembly block, and a limit support A is mounted on the lower side of the bracket A. The bracket includes the bracket A. The assembly block D is provided with a roller groove, and a roller assembly is mounted in the roller groove. The assembly block E is provided with a hook. The connecting soft belt is connected to the hook provided on the assembly block E through the roller assembly. A bracket D is mounted on the bottom plate inside the support spring. A buffer spring is mounted on the bracket D, and a limit support D is mounted on the buffer spring. A lifting ring is mounted on the lower side of the assembly block. Preferably, the adjusting screw on the transmission adjusting device is connected to the transmission rope via a drive wheel, the transmission rope is connected to the transmission belt, the transmission belt is connected to the drive wheel via the transmission rope, the drive wheel is connected to the servo motor via an electronically controlled clutch, the two ends of the transmission rope are separated and connected to the transmission belt respectively, and the transmission belt and the transmission rope are respectively connected to the lifting ring. Preferably, the intelligent electronic control system has an electronic control box that is connected to a sensor, an intelligent controller, a camera, an electronically controlled clutch, and a servo motor via circuitry. The camera is connected to the base plate, the sensor is connected to the assembly block, and the servo motor is connected to the base plate.

[0005] Preferably, the adjusting screw includes a tension adjusting device, which includes a tension adjusting rod A, a nut including a nut A, a drive wheel including a drive wheel A, a transmission belt including a transmission belt A, and a servo motor including a servo motor A and a servo motor D. The tension adjusting rod A is connected to the drive wheel A, and the nut A is connected to the other end of the tension spring. Hanging wheels are installed on both sides of the edging. One end of the transmission belt A is connected to the drive wheel A through the hanging wheel and the transmission rope, and then passes downward through the connecting hole to connect to the servo motor A. The other end of the transmission belt A is connected downward through the transmission rope to the tensioning wheel. The tensioning wheel is connected to the tensioning rope through the tensioning spring. The tensioning rope passes through the connecting hole and is connected to the servo motor D through the drive wheel. One end of the tension adjusting rod A is connected to the assembly block D, and the other end is connected to the lower side of the bracket A. Preferably, the transmission adjustment device includes a spring adjustment device, which includes a spring adjustment rod B, a nut B, a drive wheel B, a transmission belt B, a servo motor B, a bracket B, and a support B connected to the base plate. The support B is spaced apart between four adjacent support springs. One end of the spring adjustment rod B is connected to the support B. A cross bracket is connected to the nut B, and the cross bracket is connected to the bottom ends of the four adjacent support springs. The servo motor B, the lifting ring, and the drive wheel B are connected to the lower side of the base plate. The transmission belt B is connected to the drive wheel B and the servo motor B through the lifting ring and the transmission rope, respectively. The other end of the spring adjustment rod B passes through a connecting hole and is connected to the drive wheel B. Preferably, the transmission adjustment device includes a height adjustment device, which includes a height adjustment rod C, a nut C, a drive wheel C, a transmission belt C, a servo motor C, and a bracket C. The bracket C, the lifting ring, and the servo motor C are respectively connected to the upper side of the base plate. The drive wheel C is connected to the height adjustment rod C. One end of the height adjustment rod C is connected to the upper side of the bracket C, and the other end is connected to a connection hole provided on the base plate. The bracket C is spaced apart between four adjacent support springs. The nut C is fixedly connected to four height pull ropes. The four height pull ropes are respectively connected to four adjacent assembly blocks above. The transmission belt C is connected to the drive wheel C and the servo motor C respectively through the lifting ring and the transmission winding rope.

[0006] The beneficial effects of this utility model are as follows: By setting up an interval connector and an intelligent interval adjustment device, and through the control of an intelligent controller, the supporting force of the interval connector can be adjusted to a large or small size according to the user's requirements, so that the spring pad has a better independent support effect. The supporting elasticity of the supporting spring can be adjusted to a large or small size, so that different areas of the spring pad have different soft or hard support effects. The height of the interval connector can be adjusted to a high or low size, so that different areas of the spring pad have a comfortable support effect for different protruding and concave parts of the human body. Basically, it achieves the full-function good support effect required by the user for the spring pad. Attached Figure Description

[0007] Figure 1 This is a top view of the present invention after the face mask has been removed; Figure 2 This is a top view of the horizontal cross-section of the middle part of this utility model; Figure 3 This utility model Figure 1 A cross-sectional view along line AA after the face mask is installed; Figure 4 This utility model Figure 1 BB-direction cross-section diagram after the face mask is installed.

[0008] Parts Description: 1. Base plate; 2. Elastic support body; 3. Support spring; 4. Face mask; 5. Spacer connector; 6. Edge edging; 7. Hanging piece; 10. Intelligent electronic control system; 11. Adjusting screw; 11-1. Tension adjustment rod; 11-2. Elastic adjustment rod; 11-3. Height adjustment rod; 12. Circuit; 13. Electrical control box; 15. Combination block; 15-1. Combination block D; 15-2. Combination block E; 16. Tension spring; 17. Connecting hole; 18. Connecting soft strap; 19. Nut; 19-1. Nut A; 19-2. Nut B; 19-3. Nut C; 20. Bracket; 20-1. Bracket A; 20-2. Bracket B; 20-3. Bracket C; 20-4. Bracket D; 22. Limiting bracket A. 23. Roller assembly; 24. Roller groove; 25. Hook; 26. Limiting bracket D; 27. Buffer spring; 28. Drive wheel; 28-1. Drive wheel A; 28-2. Drive wheel B; 28-3. Drive wheel C; 29. ​​Drive rope; 30. Drive belt; 30-1. Drive belt A; 30-2. Drive belt B; 30-3. Drive belt C; 31. Drive wheel; 32. Electrically controlled feeder; 33. Servo motor; 33-1. Servo motor A; 33-2. Servo motor B; 33-3. Servo motor C; 33-4. Servo motor D; 35. Lifting ring; 36. Sensor; 38. Intelligent controller; 39. Camera; 50. Lifting wheel; 52. Tensioner wheel; 53. Tensioner spring; 55. Tensioner rope; 56. Drive wheel; 58. Cross bracket; 59. Height rope. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0010] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0011] See attached document Figure 1-4A spring pad equipped with an intelligent interval adjustment device is disclosed. It includes a base plate 1, on which multiple elastic support bodies 2 are mounted. Each elastic support body 2 is equipped with a support spring 3 and an interval connector 5. A face shield 4 covers the interval connector 5. The base plate 1 has surrounding edges 6, which are connected to the base plate 1 and the face shield 4 via hanging pieces 7. An intelligent interval adjustment device is installed inside the spring pad, connected to the elastic support bodies 2 via the base plate 1. The intelligent interval adjustment device includes a transmission adjustment device and an intelligent electronic control system 10. The transmission adjustment device includes an adjustment screw 11. The intelligent electronic control system 10 is connected to an electrical control box 13 via a circuit 12. The spacer connector 5 includes a combination block 15. A tension spring 16 is provided on the combination block 15. The adjacent combination blocks 15 are connected by a connecting soft strap 18, which is pressed against each other and slides up and down. One end of the connecting soft strap 18 is connected to the tension spring 16. The adjustment screw 11 is connected to a nut 19. The adjustment screw 11 is connected to a bracket 20. A connection hole 17 is provided on the base plate 1. The assembly block 15 includes assembly block D15-1 and assembly block E15-2, which are spaced apart from each other. A bracket A20-1 is mounted on the lower side of the assembly block 15, and a limiting support A22 is mounted on the lower side of the bracket A20-1. The bracket 20 includes bracket A20-1. The assembly block D15-1 is provided with a roller groove 24, and a roller assembly 23 is installed in the roller groove 24. A hook 25 is provided on the assembly block E15-2. The connecting soft strap 18 is connected to the hook 25 on the assembly block E15-2 through the roller assembly 23. A bracket D20-4 is mounted on the base plate 1 inside the support spring 3. A buffer spring 27 is mounted on the bracket D20-4, and a limiting support D26 is mounted on the buffer spring 27. A lifting ring 35 is mounted on the lower side of the assembly block 15. The adjusting screw 11 on the transmission adjustment device is connected to the transmission rope 29 via the drive wheel 28. The transmission rope 29 is connected to the transmission belt 30. The transmission belt 30 is connected to the drive wheel 31 via the transmission rope 29. The drive wheel 31 is connected to the servo motor 33 via the electronically controlled clutch 32. The two ends of the transmission rope 29 are separated and connected to the transmission belt 30 respectively. The transmission belt 30 and the transmission rope 29 are respectively connected to the lifting ring 35. The electronic control box 13 on the intelligent electronic control system is connected to the sensor 36, intelligent controller 38, camera 39, electronically controlled clutch 32, and servo motor 33 via the circuit 12. The camera 39 is connected to the base plate 1, the sensor 36 is connected to the assembly block 15, and the servo motor 33 is connected to the base plate 1.The adjusting screw 11 includes a tension adjusting device, which includes a tension adjusting rod A11-1. The nut 19 includes a nut A19-1. The drive wheel 28 includes a drive wheel A28-1. The transmission belt 30 includes a transmission belt A30-1. The servo motor 33 includes a servo motor A33-1 and a servo motor D33-4. The tension adjusting rod A11-1 is connected to the drive wheel A28-1. The nut A19-1 is connected to the other end of the tension spring 16. Hanging wheels 50 are installed on both the left and right sides of the edging 6. The transmission belt A30-... One end of the transmission belt A30-1 is connected to the drive wheel A28-1 via the hanging wheel 50 and the transmission rope 29, and then passes downward through the connecting hole 17 to connect to the servo motor A33-1. The other end of the transmission belt A30-1 is connected downward through the transmission rope 29 to the tension wheel 52. The tension wheel 52 is connected to the tension rope 55 via the tension spring 53. The tension rope 55 passes through the connecting hole 17 and is connected to the servo motor D33-4 via the drive wheel 56. One end of the tension adjusting rod A11-1 is connected to the assembly block D15-1, and the other end is connected to the lower side of the bracket A20-1. The transmission adjustment device includes a spring adjustment device, which includes a spring adjustment rod B11-2. The nut 19 includes a nut B19-2. The drive wheel 28 includes a drive wheel B28-2. The transmission belt 30 includes a transmission belt B30-2. The servo motor 33 includes a servo motor B33-2. The bracket 20 includes a bracket B20-2, which is connected to the base plate 1. The bracket B20-2 is spaced apart between four adjacent support springs 3. The spring adjustment rod B11-2... The end is connected to the bracket B20-2. A cross bracket 58 is connected to the nut B19-2. The cross bracket 58 is connected to the bottom end of the four adjacent support springs 3 respectively. The servo motor B33-2, the lifting ring 35, and the drive wheel B28-2 are connected to the lower side of the base plate 1 respectively. The transmission belt B30-2 is connected to the drive wheel B28-2 and the servo motor B33-2 respectively through the lifting ring 35 and the transmission rope 29. The other end of the elastic adjustment rod B11-2 passes through the connecting hole 17 and is connected to the drive wheel B28-2.The transmission adjustment device includes a height adjustment device, which includes a height adjustment rod C11-3. The nut 19 includes a nut C19-3. The drive wheel 28 includes a drive wheel C28-3. The transmission belt 30 includes a transmission belt C30-3. The servo motor 33 includes a servo motor C33-3. The bracket 20 includes a bracket C20-3. The bracket C20-3, the lifting ring 35, and the servo motor C33-3 are respectively connected to the upper side of the base plate 1. The drive wheel C28-3 and the height adjustment rod C11-3 are connected to each other. The three-phase connection is as follows: one end of the height adjustment rod C11-3 is connected to the upper side of the bracket C20-3, and the other end is connected to the connection hole 17 provided on the base plate 1. The bracket C20-3 is spaced apart between four adjacent support springs 3. The nut C19-3 is fixedly connected to four height pull ropes 59. The four height pull ropes 59 are respectively connected to four adjacent combination blocks 15 above. The transmission belt C30-3 is connected to the drive wheel C28-3 and the servo motor C33-3 respectively through the lifting ring 35 and the transmission winding rope 29.

[0012] Specifically: After powering on the electrical control box 13 on the intelligent electronic control system 10, the intelligent controller 38 controls each servo motor 33 to start working based on the pressure signal transmitted by the sensor 36 and the torque signal transmitted by the electronic clutch 32. The servo motor 33 drives the drive wheel 31 to rotate forward or backward, driving the transmission belt 30 to pull the drive wheel 28 and the adjusting screw 11 to rotate accordingly via the transmission rope 29. The middle of the transmission rope 29 is fixedly connected to each wheel it drives, and the two ends are fixedly connected to the transmission belt 30 on the left and right sides of each wheel respectively. The transmission belt 30 and the transmission rope 29 are both connected by the control ring 35 or the pulley 50, which will provide stable transmission. When the electronic clutch 32 senses that the torque is too large, it will control the servo motor 33 to work through the intelligent controller 38. By setting two types of combination blocks D15-1 and E15-2, which are spaced apart, the structure of the spacer connection body 5 and the structure of the tension adjustment device can be reduced. The elasticity adjustment device and the height adjustment device are set alternately to reduce the structure of the intelligent interval adjustment device 8, reduce costs, and improve the adjustment effect after the setting is simple. By setting roller groove 24 and roller group 23 in the combination block D15-1, when the spring pad is used, the adjacent combination block 15 will pull one end of the tension spring to move simultaneously due to the tension of the connecting soft belt 18. Therefore, the roller group 23 can assist its smooth movement. The connection between the connecting soft belt 18 and the tension spring is set to improve the independent support function of the spring pad by utilizing its bendability and extension, which solves the shortcomings and deficiencies in the background technology. When the spring pad has an independent support function, more effective soft or hard support and high or low support adjustment functions can be set. The hanging piece 7 makes it easier to remove the face cover 4 and the edge 6 for easy replacement and cleaning, and timely maintenance of the spring pad can be performed. After the camera 39 transmits the display signal to the intelligent control machine 38, the internal usage of the spring pad can be observed in time.

[0013] The tension adjustment rod 11-1 drives the nut A19-1 and one end of the tension spring 16 to rise or fall, thereby adjusting the tension of the connecting soft belt 18. This adjusts the independent support function of the combined block 15 on the spring pad partial spacer connector 5. When the servo motor A33-1 is not needed for adjustment, the servo motor D33-4 will drive the drive pulley 56 to reverse through the electronic clutch 32, loosening the tension rope 55. Then the transmission belt A30-1 will be loosened through the tension spring 55 and tension pulley 52 to a level that does not affect the normal lifting and lowering function of the combined block 15. The elastic adjustment rod B11-2 drives the nut B19-2 and the cross bracket 58 to rise or fall, thereby adjusting the elasticity of the support spring 3. This adjusts the elastic support function of the combined block 15 on the spring pad partial spacer connector 5. The height adjustment rod C11-3 drives the nut C19-3 and the height rope 59 to rise or fall, thereby adjusting the height of the combined block 15 support. This adjusts the convex and concave support function of the combined block 15 on the spring pad local spacer connector 5.

[0014] By setting up the intelligent adjustment function of the spacer connector 5 through the transmission adjustment device inside the spring pad, the user's needs for the support effect of the spring pad are basically met. This solves the shortcomings and deficiencies of the prior art, which is that the spring connector inside the spring pad cannot be adjusted and the spring pad cannot be adjusted in a timely and accurate manner according to each user's usage. This utility model sets up an intelligent spacer adjustment device to intelligently adjust the elastic support body 2 and the spacer connector 5. After its structure is simplified, the adjustment effect is better, the cost is saved, and the use of many polluting, easily dented, deformed and aged materials is reduced, so as to achieve good use effect and promote health.

[0015] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spring pad equipped with an intelligent interval adjustment device, comprising a base plate (1), wherein a plurality of elastic supports (2) are provided on the base plate (1), and a support spring (3) and an interval connector (5) are provided on the elastic supports (2), and a face mask (4) is covered above the interval connector (5), and a perimeter (6) is provided around the base plate (1), wherein the perimeter (6) is connected to the base plate (1) and the face mask (4) respectively by a hanger (7), characterized in that The spring pad is equipped with an intelligent interval adjustment device. The intelligent interval adjustment device is connected to the elastic support body (2) through the base plate (1). The intelligent interval adjustment device includes a transmission adjustment device and an intelligent electronic control system (10). The transmission adjustment device includes an adjustment screw (11). The intelligent electronic control system (10) is connected to an electrical control box (13) through a circuit (12). The interval connection body (5) includes a combination block (15). The combination block (15) is equipped with a tension spring (16). Adjacent combination blocks (15) are squeezed against each other and slid up and down through a connecting soft strap (18). The connecting soft strap (18) is connected to one end of the tension spring (16). The adjustment screw (11) is connected to a nut (19). The adjustment screw (11) is connected to a bracket (20). The base plate (1) is equipped with a connection hole (17).

2. A spring pad equipped with an intelligent interval adjustment device as described in claim 1, characterized in that... The assembly block (15) includes assembly block D (15-1) and assembly block E (15-2), which are spaced apart from each other. A bracket A (20-1) is mounted on the lower side of the assembly block (15), and a limit support A (22) is mounted on the lower side of the bracket A (20-1). The bracket (20) includes bracket A (20-1). A roller groove (24) is provided on the assembly block D (15-1), and a roller is mounted in the roller groove (24). Group (23), the combination block E (15-2) is provided with a hook (25), the connecting soft belt (18) is connected to the hook (25) provided on the combination block E (15-2) through the roller group (23), the support spring (3) is provided with a bracket D (20-4) on the bottom plate (1), the support spring (3) is provided with a buffer spring (27), the buffer spring (27) is provided with a limit support D (26), and the combination block (15) is provided with a lifting ring (35) on the lower side.

3. A spring pad equipped with an intelligent interval adjustment device as described in claim 1 or 2, characterized in that... The adjusting screw (11) on the transmission adjustment device is connected to the transmission rope (29) via the drive wheel (28). The transmission rope (29) is connected to the transmission belt (30). The transmission belt (30) is connected to the drive wheel (31) via the transmission rope (29). The drive wheel (31) is connected to the servo motor (33) via the electronic clutch (32). The two ends of the transmission rope (29) are separated to the left and right and connected to the transmission belt (30) respectively. The transmission belt (30) and the transmission rope (29) are connected to the lifting ring (35) respectively.

4. A spring pad equipped with an intelligent interval adjustment device as described in claim 1 or 2, characterized in that... The electrical control box (13) is connected to a sensor (36), an intelligent controller (38), a camera (39), an electric clutch (32), and a servo motor (33) via a circuit (12). The camera (39) is connected to the base plate (1), the sensor (36) is connected to the assembly block (15), and the servo motor (33) is connected to the base plate (1).

5. A spring pad equipped with an intelligent interval adjustment device as described in claim 3, characterized in that... The adjusting screw (11) includes a tension adjusting device, which includes a tension adjusting rod A (11-1), the nut (19) includes a nut A (19-1), the drive wheel (28) includes a drive wheel A (28-1), the transmission belt (30) includes a transmission belt A (30-1), the servo motor (33) includes a servo motor A (33-1) and a servo motor D (33-4), the tension adjusting rod A (11-1) is connected to the drive wheel A (28-1), the nut A (19-1) is connected to the other end of the tension spring (16), and the left and right sides of the edging (6) are equipped with hanging wheels (50), and the transmission belt A (30-1) One end of the transmission belt A (30-1) is connected to the drive wheel A (28-1) via the hanging wheel (50) and the transmission rope (29), and then passes downward through the connecting hole (17) to connect to the servo motor A (33-1). The other end of the transmission belt A (30-1) is connected downward through the transmission rope (29) to the tension wheel (52). The tension wheel (52) is connected to the tension rope (55) via the tension spring (53). The tension rope (55) passes through the connecting hole (17) and is connected to the servo motor D (33-4) via the drive wheel (56). One end of the tension adjusting rod A (11-1) is connected to the assembly block D (15-1), and the other end is connected to the lower side of the bracket A (20-1).

6. A spring pad equipped with an intelligent interval adjustment device as described in claim 3, characterized in that... The transmission adjustment device includes a spring adjustment device, which includes a spring adjustment rod B (11-2). The nut (19) includes a nut B (19-2). The drive wheel (28) includes a drive wheel B (28-2). The transmission belt (30) includes a transmission belt B (30-2). The servo motor (33) includes a servo motor B (33-2). The bracket (20) includes a bracket B (20-2). The bracket B (20-2) is connected to the base plate (1). The bracket B (20-2) is spaced between four adjacent support springs (3). One end of the spring adjustment rod B (11-2) The nut B (19-2) is connected to the bracket B (20-2), and a cross bracket (58) is connected to the nut B (19-2). The cross bracket (58) is connected to the bottom of the four adjacent support springs (3). The servo motor B (33-2), the lifting ring (35), and the drive wheel B (28-2) are connected to the lower side of the base plate (1). The transmission belt B (30-2) is connected to the drive wheel B (28-2) and the servo motor B (33-2) through the lifting ring (35) and the transmission rope (29). The other end of the elastic adjustment rod B (11-2) passes through the connecting hole (17) and is connected to the drive wheel B (28-2).

7. A spring pad equipped with an intelligent interval adjustment device as described in claim 3, characterized in that... The transmission adjustment device includes a height adjustment device, which includes a height adjustment rod C (11-3), a nut (19) including a nut C (19-3), a drive wheel (28) including a drive wheel C (28-3), a transmission belt (30) including a transmission belt C (30-3), a servo motor (33) including a servo motor C (33-3), and a bracket (20) including a bracket C (20-3). The bracket C (20-3), the lifting ring (35), and the servo motor C (33-3) are respectively connected to the upper side of the base plate (1). The drive wheel C (28-3) and the height adjustment rod C (11-3) are connected to each other. -3) Connected, one end of the height adjustment rod C (11-3) is connected to the upper side of the bracket C (20-3), and the other end is connected to the connection hole (17) provided on the base plate (1). The bracket C (20-3) is spaced between four adjacent support springs (3). The nut C (19-3) is fixedly connected to four height pull ropes (59). The four height pull ropes (59) are respectively connected to the four adjacent combination blocks (15) above. The transmission belt C (30-3) is respectively connected to the drive wheel C (28-3) and the servo motor C (33-3) through the hanging ring (35) and the transmission winding rope (29).

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