A multifunctional wheelchair

Abstract

The application provides a multifunctional wheelchair, relates to the field of medical devices, and comprises a wheelchair frame, propelling wheels, guide wheels, a battery, a rehabilitation auxiliary motor, a multifunctional auxiliary mechanism and a rehabilitation protection mechanism; the propelling wheels are provided in two groups, and the two groups of propelling wheels are rotationally connected to the lower rear end of the wheelchair frame; the battery is fixedly connected to the inner side of the wheelchair frame; the rehabilitation auxiliary motor is fixedly connected to the lower inner side of the wheelchair frame; the footrest mounting pieces are fixedly connected to the left and right sides of the front end of the wheelchair frame; the mounting fixed rods are provided in two groups, and the two groups of mounting fixed rods are arranged on the inner sides of the footrest mounting pieces; the multifunctional auxiliary mechanism is arranged on the outer side of the wheelchair frame; and the rehabilitation protection mechanism is arranged on the front end of the wheelchair frame, which protects the legs of a patient and avoids the knocking of foreign matters on the patient during wheelchair movement, thereby solving the problem that the existing foreign matters are prone to knocking the legs of a patient and causing secondary injury to the patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a multifunctional wheelchair. Background Technology

[0002] In the orthopedic department of the hospital, many patients with leg fractures need to use plaster casts to fix their legs, which makes it difficult for them to move. They usually need to use wheelchairs for rehabilitation. Existing wheelchairs are generally divided into electric and manual types. Since fracture patients no longer use wheelchairs after recovery, they usually choose manual wheelchairs. Existing manual wheelchairs are generally composed of a frame, wheels, brakes, seat and backrest.

[0003] The present invention, with publication number CN113081524A, relates to a wheelchair, and more particularly to a multifunctional wheelchair for orthopedic rehabilitation. The technical problem to be solved is to provide a multifunctional wheelchair for orthopedic rehabilitation that allows for easy movement and leg mobility. A multifunctional wheelchair for orthopedic rehabilitation includes: a base plate with a first rotating rod rotatably mounted on one side; armrests symmetrically arranged on the upper part of the base plate; a drive assembly located on the lower part of the base plate; steering wheels symmetrically rotatably mounted on one side of the base plate; and a backrest assembly located on the upper part of the base plate near the steering wheels. This invention achieves the effect of easy movement and leg mobility; by having the user sit on the seat and rotate the drive wheels on both sides, the wheelchair can be moved, and the direction of movement can be changed by the steering wheels.

[0004] However, in existing wheelchairs, the patient's legs are usually directly exposed to the outside world. During the wheelchair's movement, external objects can easily bump into the patient's legs, causing secondary injuries and affecting the wheelchair's usability. Summary of the Invention

[0005] In view of this, the present invention provides a multifunctional wheelchair that provides lighting for easy use by the patient, serves as a warning to pedestrians and prevents accidental bumping into the patient, thus protecting the patient. The canopy provides sun and rain protection, storage space ensures the wheelchair's versatility, and leg protection prevents the patient from being bumped by external objects during wheelchair movement, thus avoiding secondary injuries. It also prevents numbness in the legs caused by prolonged wheelchair use, improving patient comfort and overall wheelchair usability.

[0006] This invention provides the purpose and function of a multifunctional wheelchair, including a wheelchair frame, propulsion wheels, propulsion components, guide wheels, armrest components, battery components, rehabilitation assistive motor, foot pedal mounting components, mounting and fixing rods, mounting bolts, multifunctional assistive mechanism, and rehabilitation protection mechanism; The propulsion wheels are provided in two sets, and the two sets of propulsion wheels are rotatably connected to the lower rear end of the wheelchair frame; The propulsion components are provided in two sets, both of which are annular structures, and are coaxially fixedly connected to the outside of the propulsion wheel. The guide wheels are provided in two sets, both of which are omnidirectional wheels, and the two sets of guide wheels are fixedly connected to the front end of the wheelchair frame. The armrests are provided in two sets, and the two sets of armrests are fixedly connected to the top of the wheelchair frame; The battery is fixedly connected to the inside of the wheelchair frame; The rehabilitation assist motor is fixedly connected to the lower inner side of the wheelchair frame; The foot pedal mounting components are provided in two sets, and the two sets of foot pedal mounting components are fixedly connected to the left and right sides of the front end of the wheelchair frame respectively; Two sets of mounting rods are provided, and the two sets of mounting rods are respectively located on the inner side of the foot pedal mounting component; Two sets of mounting bolts are provided, and the two sets of mounting bolts are threadedly connected to the mounting fixing rod and the foot pedal mounting component, respectively. The multi-functional auxiliary mechanism is located on the outside of the wheelchair frame; The rehabilitation and protective mechanism is located at the front end of the wheelchair frame.

[0007] Furthermore, the multifunctional auxiliary mechanism includes: a lighting lamp; The lighting is provided in two sets, which are fixedly connected to the left and right sides of the front end of the wheelchair frame, respectively. Both sets of lighting are electrically connected to the battery.

[0008] Furthermore, the multifunctional auxiliary mechanism also includes: a shielding support rod and a shielding canopy; The shielding support rods are provided in two sets, and the two sets of shielding support rods are welded to the upper left and right sides of the wheelchair frame respectively; The canopy is fixedly connected to the upper end of the canopy support rod.

[0009] Furthermore, the multifunctional auxiliary mechanism also includes: a mobile warning light; The mobile warning light is fixedly connected to the upper rear left side of the wheelchair frame, and the mobile warning light is electrically connected to the battery.

[0010] Furthermore, the multifunctional auxiliary mechanism also includes: a storage basket; The storage basket is fixedly connected to the lower rear end of the wheelchair frame.

[0011] Furthermore, the rehabilitation protection mechanism includes: a training connecting rod, a training connecting shaft, a training drive crankshaft, and a protective transmission rod; The training connecting rods are provided in two sets, and the two sets of training connecting rods are respectively hinged to the left and right sides of the lower front end of the mounting and fixing rod; The training connection shaft is fixedly connected to the inner side of the two sets of training connection rods; The training drive crankshaft is coaxially and fixedly connected to the right side of the shaft of the rehabilitation assist motor; The protective transmission rod is hinged to the rear end of the training connecting shaft, and the rear end of the protective transmission rod is hinged to the training drive crankshaft.

[0012] Furthermore, the rehabilitation protection mechanism also includes: a protective fixing plate, a protective connecting slide, a protective baffle, and a protective limiting component; Two sets of protective fixing plates are provided, and the two sets of protective fixing plates are respectively fixedly connected to the front end of the training connecting rod; The protective connecting slide is provided in two sets, both sets of which are arc-shaped slide structures, and the two sets of protective connecting slides are respectively opened on the inner side of the protective fixing plate. The protective baffle is provided in two sets. Both sets of protective baffles are arc-shaped plate structures and are slidably connected to the inner side of the protective connection groove. The protective limiting components are provided in four sets. The four sets of protective limiting components are fixedly connected to the outside of the protective baffle and are respectively set on the upper and lower sides of the protective fixed plate.

[0013] Furthermore, the rehabilitation protection mechanism also includes: a protective guide groove, a protective guide rod, a protective pedal, a protective connecting spring, a protective trigger groove, and a protective trigger element; The protective guide groove is provided in two sets, both sets of which are rectangular groove structures, and the two sets of protective guide grooves are respectively opened on the inner side of the protective fixing plate. Two sets of protective guide rods are provided, and the two sets of protective guide rods are slidably connected to the inner side of the protective guide groove. Two sets of protective pedals are provided, and the two sets of protective pedals are fixedly connected to the upper end of the protective guide rod respectively; The protective connecting springs are provided in two sets. The two sets of protective connecting springs are fixedly connected to the upper end of the protective fixing plate, and the upper ends of the two sets of protective connecting springs are fixedly connected to the protective pedal. The protective trigger groove is provided in two sets, both sets of protective trigger grooves are inclined groove structures, and the two sets of protective trigger grooves are respectively opened at the lower inner side of the protective baffle. The protective triggering element is provided in two sets. The two sets of protective triggering elements are fixedly connected to the lower end of the protective guide rod, and both sets of protective triggering elements are set inside the protective triggering groove. Beneficial effects

[0014] This invention features a multi-functional auxiliary mechanism. When the patient uses the wheelchair at night, the headlight is turned on to provide illumination and facilitate use. When the patient needs to go out, a mobile warning light is activated to alert pedestrians and prevent accidental contact, thus protecting the patient. The canopy provides sun and rain protection. The patient's belongings can be placed in the storage basket, which provides storage and ensures the wheelchair's versatility, improving its overall usability.

[0015] This invention, through the design of a rehabilitation protection mechanism, allows the patient's feet to be placed on top of the protective pedal when using a wheelchair. The protective pedal is then pressed downwards, causing the protective guide rod to move downwards. This movement in turn causes the protective trigger element to move downwards. Under the action of the protective trigger groove, the protective trigger element rotates the protective baffle. This rotation of the protective baffle protects the patient's legs, preventing external objects from hitting the patient during wheelchair movement and avoiding secondary injuries. This enhances the overall usability of the wheelchair and provides protection for the patient.

[0016] This invention, through the design of a rehabilitation protection mechanism, allows the rehabilitation assist motor to be activated when the patient uses a wheelchair for an extended period. The rotation of the rehabilitation assist motor's shaft drives the training drive crankshaft to rotate, which in turn pulls the protective transmission rod back and forth. This back and forth movement of the protective transmission rod causes the training connecting rod to swing up and down, which in turn causes the protective fixing plate to swing up and down. This up and down movement of the protective fixing plate then moves the patient's legs up and down, preventing numbness in the legs caused by prolonged wheelchair use and improving the patient's comfort when using the wheelchair. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the multifunctional auxiliary mechanism structure according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the storage basket structure according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the protective baffle structure according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the training connecting rod structure according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the protective pedal structure according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the rehabilitation and protection mechanism structure according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the training drive crankshaft structure according to an embodiment of the present invention.

[0027] List of reference numerals 1. Wheelchair frame; 101. Lighting lamp; 102. Canopy support rod; 103. Canopy; 104. Mobile warning light; 105. Storage basket; 2. Propulsion wheel; 3. Propulsion component; 4. Guide wheel; 5. Handrail component; 6. Battery component; 7. Rehabilitation assistive motor; 701. Training connecting rod; 702. Training connecting shaft; 703. Training drive crankshaft; 704. Protective transmission rod; 705. Protective fixing plate; 706. Protective connecting slide; 707. Protective baffle; 708. Protective limiting component; 709. Protective guide groove; 710. Protective guide rod; 711. Protective pedal; 712. Protective connecting spring; 713. Protective trigger groove; 714. Protective trigger component; 8. Foot pedal mounting component; 9. Mounting fixing rod; 10. Mounting bolt. Detailed Implementation

[0028] Example 1: Please refer to Figures 1 to 3 As shown: The present invention provides a multifunctional wheelchair, including a wheelchair frame 1, a propulsion wheel 2, a propulsion component 3, a guide wheel 4, an armrest component 5, a battery component 6, a rehabilitation assist motor 7, a foot pedal mounting component 8, a mounting and fixing rod 9, mounting bolts 10, and a multifunctional assist mechanism; Two sets of propulsion wheels 2 are provided, and the two sets of propulsion wheels 2 are rotatably connected to the lower rear end of the wheelchair frame 1; Two sets of propulsion components 3 are provided. Both sets of propulsion components 3 are circular ring structures. The two sets of propulsion components 3 are coaxially fixedly connected to the outside of the propulsion wheel 2. Two sets of guide wheels 4 are provided, and both sets of guide wheels 4 are omnidirectional wheel structures. The two sets of guide wheels 4 are fixedly connected to the front end of the wheelchair frame 1. Two sets of armrest components 5 are provided, and the two sets of armrest components 5 are fixedly connected to the top of the wheelchair frame 1; The battery component 6 is fixedly connected to the inside of the wheelchair frame 1; The rehabilitation assistive motor 7 is fixedly connected to the lower inner side of the wheelchair frame 1; Two sets of foot pedal mounting components 8 are provided, and the two sets of foot pedal mounting components 8 are fixedly connected to the left and right sides of the front end of the wheelchair frame 1 respectively; Two sets of mounting rods 9 are provided, and the two sets of mounting rods 9 are respectively located on the inside of the foot pedal mounting part 8; Two sets of mounting bolts 10 are provided, and the two sets of mounting bolts 10 are threadedly connected to the mounting rod 9 and the foot pedal mounting part 8, respectively. The multi-functional assistive mechanism is located on the outside of the wheelchair frame 1.

[0029] The multi-functional auxiliary mechanism includes: a lighting lamp 101, a shielding support rod 102, a shielding canopy 103, a mobile warning light 104, and a storage basket 105; Two sets of lighting lamps 101 are provided. The two sets of lighting lamps 101 are fixedly connected to the left and right sides of the front end of the wheelchair frame 1, respectively. Both sets of lighting lamps 101 are electrically connected to the battery 6. Two sets of shielding support rods 102 are provided, and the two sets of shielding support rods 102 are welded to the upper left and right sides of the wheelchair frame 1 respectively; The canopy 103 is fixedly connected to the upper end of the shielding support rod 102; The mobile warning light 104 is fixedly connected to the upper rear left side of the wheelchair frame 1, and the mobile warning light 104 is electrically connected to the battery 6. The storage basket 105 is fixedly connected to the lower rear end of the wheelchair frame 1.

[0030] In use, when the patient uses the wheelchair at night, the lighting 101 is turned on, providing illumination and facilitating the patient's use. When the patient needs to go out, the mobile warning light 104 is turned on, alerting pedestrians and preventing accidental contact with the patient, thus protecting the patient. The canopy 103 provides sun and rain protection for the patient. The patient's carry-on items can be placed inside the storage basket 105, which provides storage functionality, ensuring the wheelchair's versatility and improving its overall usability. Example

[0031] This invention provides a multifunctional wheelchair, based on Embodiment 1, such as... Figures 1 to 8 As shown, it also includes a rehabilitation and protection mechanism, which is located at the front end of the wheelchair frame 1. The rehabilitation protection mechanism includes: a training connecting rod 701, a training connecting shaft 702, a training drive crankshaft 703, a protective transmission rod 704, a protective fixing plate 705, a protective connecting slide 706, a protective baffle 707, a protective limiting component 708, a protective guide groove 709, a protective guide rod 710, a protective pedal 711, a protective connecting spring 712, a protective trigger groove 713, and a protective trigger component 714. Two sets of training connecting rods 701 are provided, and the two sets of training connecting rods 701 are respectively hinged to the left and right sides of the lower front end of the mounting and fixing rod 9; The training connecting shaft 702 is fixedly connected to the inner side of the two sets of training connecting rods 701; The training drive crankshaft 703 is coaxially and fixedly connected to the right side of the shaft of the rehabilitation assist motor 7; The protective transmission rod 704 is hinged to the rear end of the training connecting shaft 702, and the rear end of the protective transmission rod 704 is hinged to the training drive crankshaft 703. Two sets of protective fixing plates 705 are provided, and the two sets of protective fixing plates 705 are respectively fixedly connected to the front end of the training connecting rod 701; Two sets of protective connecting slides 706 are provided. Both sets of protective connecting slides 706 are arc-shaped slide structures. The two sets of protective connecting slides 706 are respectively opened on the inner side of the protective fixing plate 705. Two sets of protective baffles 707 are provided. Both sets of protective baffles 707 are arc-shaped plate structures. Both sets of protective baffles 707 are slidably connected to the inner side of the protective connection groove 706. Four sets of protective limiting components 708 are provided. The four sets of protective limiting components 708 are fixedly connected to the outside of the protective baffle 707, and the four sets of protective limiting components 708 are respectively provided on the upper and lower sides of the protective fixing plate 705. Two sets of protective guide grooves 709 are provided. Both sets of protective guide grooves 709 are rectangular groove structures. The two sets of protective guide grooves 709 are respectively opened on the inner side of the protective fixing plate 705. Two sets of protective guide rods 710 are provided, and the two sets of protective guide rods 710 are slidably connected to the inner side of the protective guide groove 709 respectively; Two sets of protective pedals 711 are provided, and the two sets of protective pedals 711 are fixedly connected to the upper end of the protective guide rod 710 respectively; Two sets of protective connecting springs 712 are provided. The two sets of protective connecting springs 712 are fixedly connected to the upper end of the protective fixing plate 705, and the upper ends of the two sets of protective connecting springs 712 are fixedly connected to the protective pedal 711. Two sets of protective trigger grooves 713 are provided. Both sets of protective trigger grooves 713 are inclined groove structures. The two sets of protective trigger grooves 713 are respectively opened on the lower inner side of the protective baffle 707. Two sets of protective triggers 714 are provided. The two sets of protective triggers 714 are fixedly connected to the lower end of the protective guide rod 710. Both sets of protective triggers 714 are located inside the protective trigger groove 713.

[0032] In use, when a patient needs to use the wheelchair, their feet are placed on top of the protective pedal 711. The protective pedal 711 is compressed and moves downwards. This downward movement of the protective pedal 711 causes the protective guide rod 710 to move downwards, which in turn causes the protective trigger 714 to move downwards. The downward movement of the protective trigger 714, under the action of the protective trigger groove 713, causes the protective baffle 707 to rotate. This rotation of the protective baffle 707 protects the patient's legs, preventing external objects from hitting the patient during wheelchair movement and avoiding secondary injuries. The improved protection enhances the overall usability of the wheelchair. Furthermore, when the patient uses the wheelchair for extended periods, activating the rehabilitation assist motor 7 causes its shaft to rotate, driving the training drive crankshaft 703. This rotation reciprocates the protective transmission rod 704, causing the training connecting rod 701 to swing up and down. The swinging of the training connecting rod 701, in turn, causes the protective fixing plate 705 to swing up and down, which in turn moves the patient's legs up and down. This prevents numbness in the legs caused by prolonged wheelchair use and improves patient comfort.

[0033] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A multifunctional wheelchair, comprising a wheelchair frame (1), propulsion wheels (2), propulsion components (3), guide wheels (4), armrest components (5), battery components (6), rehabilitation assistive motor (7), foot pedal mounting components (8), mounting rods (9), mounting bolts (10), a multifunctional assistive mechanism, and a rehabilitation protection mechanism; characterized in that: Two sets of propulsion wheels (2) are provided, and the two sets of propulsion wheels (2) are rotatably connected to the lower rear end of the wheelchair frame (1); two sets of propulsion components (3) are provided, and the two sets of propulsion components (3) are both annular structures, and the two sets of propulsion components (3) are coaxially fixedly connected to the outer side of the propulsion wheels (2); two sets of guide wheels (4) are provided, and the two sets of guide wheels (4) are both universal wheel structures, and the two sets of guide wheels (4) are fixedly connected to the front end of the wheelchair frame (1); two sets of armrest components (5) are provided, and the two sets of armrest components (5) are fixedly connected to the top of the wheelchair frame (1); the battery component (6) is fixedly connected to the inner side of the wheelchair frame (1). The rehabilitation assist motor (7) is fixedly connected to the lower inner side of the wheelchair frame (1); two sets of foot pedal mounting parts (8) are provided, and the two sets of foot pedal mounting parts (8) are fixedly connected to the left and right sides of the front end of the wheelchair frame (1); two sets of mounting fixing rods (9) are provided, and the two sets of mounting fixing rods (9) are respectively provided on the inner side of the foot pedal mounting parts (8); two sets of mounting bolts (10) are provided, and the two sets of mounting bolts (10) are threadedly connected to the mounting fixing rods (9) and the foot pedal mounting parts (8); the multi-functional auxiliary mechanism is provided on the outer side of the wheelchair frame (1); the rehabilitation protection mechanism is provided at the front end of the wheelchair frame (1).

2. The multifunctional wheelchair as described in claim 1, characterized in that: The multifunctional auxiliary mechanism includes: a lighting lamp (101); the lighting lamp (101) is provided in two sets, and the two sets of lighting lamps (101) are respectively fixedly connected to the left and right sides of the front end of the wheelchair frame (1), and both sets of lighting lamps (101) are electrically connected to the battery (6).

3. The multifunctional wheelchair as described in claim 1, characterized in that: The multifunctional auxiliary mechanism also includes: a shielding support rod (102) and a shielding canopy (103); the shielding support rod (102) is provided in two sets, and the two sets of shielding support rods (102) are respectively welded to the upper left and right sides of the wheelchair frame (1); the shielding canopy (103) is fixedly connected to the upper end of the shielding support rod (102).

4. The multifunctional wheelchair as described in claim 1, characterized in that: The multifunctional auxiliary mechanism also includes a mobile warning light (104); the mobile warning light (104) is fixedly connected to the upper rear left side of the wheelchair frame (1), and the mobile warning light (104) is electrically connected to the battery (6).

5. The multifunctional wheelchair as described in claim 1, characterized in that: The multifunctional auxiliary mechanism also includes a storage basket (105); the storage basket (105) is fixedly connected to the lower rear end of the wheelchair frame (1).

6. The multifunctional wheelchair as described in claim 1, characterized in that: The rehabilitation protection mechanism includes: a training connecting rod (701), a training connecting shaft (702), a training drive crankshaft (703), and a protective transmission rod (704); the training connecting rod (701) is provided in two sets, and the two sets of training connecting rods (701) are respectively hinged to the left and right sides of the lower front end of the mounting and fixing rod (9); the training connecting shaft (702) is fixedly connected to the inner side of the two sets of training connecting rods (701); the training drive crankshaft (703) is coaxially fixedly connected to the right side of the shaft of the rehabilitation auxiliary motor (7); the protective transmission rod (704) is hinged to the rear end of the training connecting shaft (702), and the rear end of the protective transmission rod (704) is hinged to the training drive crankshaft (703).

7. The multifunctional wheelchair as described in claim 6, characterized in that: The rehabilitation protection mechanism also includes: a protective fixing plate (705), a protective connecting groove (706), a protective baffle (707), and a protective limiting component (708); two sets of the protective fixing plates (705) are provided, and the two sets of protective fixing plates (705) are respectively fixedly connected to the front end of the training connecting rod (701); two sets of the protective connecting grooves (706) are provided, and both sets of protective connecting grooves (706) are arc-shaped groove structures, and the two sets of protective connecting grooves (706) are respectively opened On the inner side of the protective fixing plate (705); two sets of protective baffles (707) are provided, both sets of protective baffles (707) are arc-shaped plate structures, and both sets of protective baffles (707) are slidably connected to the inner side of the protective connecting groove (706); four sets of protective limiting members (708) are provided, the four sets of protective limiting members (708) are respectively fixedly connected to the outer side of the protective baffles (707), and the four sets of protective limiting members (708) are respectively provided on the upper and lower sides of the protective fixing plate (705).

8. The multifunctional wheelchair as described in claim 7, characterized in that: The rehabilitation protection mechanism further includes: a protective guide groove (709), a protective guide rod (710), a protective pedal (711), a protective connecting spring (712), a protective trigger groove (713), and a protective trigger element (714); the protective guide groove (709) is provided in two sets, both sets of the protective guide groove (709) are rectangular groove structures, and the two sets of the protective guide groove (709) are respectively opened on the inner side of the protective fixing plate (705); the protective guide rod (710) is provided in two sets, and the two sets of the protective guide rod (710) are respectively slidably connected to the inner side of the protective guide groove (709); the protective pedal (711) is provided in two sets, and the two sets of the protective pedal (711) are respectively fixedly connected to the protective guide rod (712), the protective guide rod (713), the protective guide rod (714), the protective guide rod (715), the protective guide rod (716), the protective guide rod (717), the protective guide rod (718), the protective guide rod (719), the protective guide rod (710), the protective guide rod (711), ... The upper end of 10); the protective connecting spring (712) is provided in two sets, and the two sets of protective connecting spring (712) are respectively fixedly connected to the upper end of the protective fixing plate (705), and the upper ends of the two sets of protective connecting spring (712) are fixedly connected to the protective pedal (711); the protective trigger groove (713) is provided in two sets, and the two sets of protective trigger groove (713) are both inclined groove structures, and the two sets of protective trigger groove (713) are respectively opened on the lower end of the inner side of the protective baffle (707); the protective trigger member (714) is provided in two sets, and the two sets of protective trigger members (714) are respectively fixedly connected to the lower end of the protective guide rod (710), and the two sets of protective trigger members (714) are all set on the inner side of the protective trigger groove (713).

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