Folding stair of medical vehicle

Abstract

The utility model discloses a medical vehicle folding staircase, including fixed plate, guide rail and a plurality of footboard, the guide rail is fixedly connected to the lower surface of fixed plate, the guide rail is in sliding connection with a movable frame, both sides in the movable frame are respectively and movably hinged with an upper ladder rod and a lower ladder rod, the plurality of footboards are movably hinged between the upper ladder rod and the lower ladder rod at equal distance, and the footboard is in sliding connection with the movable frame. The upper ladder rod and the lower ladder rod are movably hinged to the movable frame and the pedal through a first hinge shaft and a second hinge shaft respectively. The folding push rod stretches out and draws back to drive the upper ladder rod, the lower ladder rod and the pedal to be folded and unfolded, and the lead screw motor and the ball screw drive the movable frame, the folded upper ladder rod, the folded lower ladder rod and the folded pedal to move along the guide rail and retract into the installation groove or stretch out of the installation groove. The purposes that in the using process, the ladder can be unfolded to form a stair so that the carriage can be downwards expanded conveniently, and in the storing process, the ladder can be retracted into the floor of the expanded carriage without affecting expanding and retracting of the expanded carriage are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of extended medical vehicles, in particular to a folding staircase for a medical vehicle. Background Art

[0002] The expandable medical vehicle is a mobile medical vehicle with an expandable compartment structure to increase the internal space. Since the internal space can be expanded, it is convenient to carry out medical treatment on-site outside the hospital. It is a new type of medical equipment.

[0003] After the medical vehicle's compartment is expanded, the internal space is larger and more rescue work can be carried out. In order to facilitate the entry and exit of medical staff and patients, the medical expansion vehicle is also designed and installed with stairs on the expanded compartment. In this way, on the basis of the stairs at the original door position, at least one set of stairs is added, which can make it more convenient for medical staff and patients to enter and exit and improve the efficiency of rescue. This design is of great significance and value. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a folding staircase for a medical vehicle, which is used to add at least one set of stairs on the basis of the original stairs at the door position, thereby making it more convenient for medical staff and patients to enter and exit and improving the efficiency of treatment.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A folding staircase for a medical vehicle, comprising a fixed plate, a guide rail and a plurality of pedals, wherein the guide rail is fixedly connected to the lower surface of the fixed plate, a movable frame is slidably connected in the guide rail, an upper ladder rod and a lower ladder rod are respectively movably hinged on both sides of the movable frame, a plurality of pedals are movably hinged between the upper ladder rod and the lower ladder rod at equal intervals, and the upper ladder rod and the lower ladder rod are respectively movably hinged to the movable frame and the pedals through a hinge shaft 1 and a hinge shaft 2;

[0007] A limit pull rod is provided between the pedal and the movable frame and between two adjacent pedals, and both ends of the limit pull rod are respectively movably hinged with the adjacent hinge shaft 1 and hinge shaft 2, and a slide groove is provided at the position of the limit pull rod corresponding to the hinge shaft 2;

[0008] A folding push rod connected to the lower ladder rod is movably hinged below the movable frame, a screw motor and a ball screw are arranged between the guide rail and the movable frame, and the output shaft of the screw motor is transmission-connected to the ball screw.

[0009] Preferably, the fixing plate is fixedly connected to the top of the inner wall of the mounting groove provided in the extended compartment floor, and the mounting groove is open on one side corresponding to the pedal, and a cover plate is fixedly installed at the bottom of the extended compartment floor at a position corresponding to the mounting groove.

[0010] Preferably, the screw motor is fixedly mounted on a side of the bottom of the guide rail away from the movable frame, and one end of the ball screw close to the screw motor and one end close to the movable frame are respectively connected to the guide rail and the cover plate through shaft seats.

[0011] Preferably, the ball screw is transmission-connected to a screw nut slide fixedly mounted at the bottom of the movable frame.

[0012] Preferably, there are two folding push rods, which are respectively connected to the two lower ladder rods in a transmission manner.

[0013] Preferably, long sliders are fixedly mounted on both sides of the movable frame, and the movable frame is slidably connected to the guide rails via the long sliders.

[0014] Preferably, the distance between two adjacent hinge axes 1 and the distance between two adjacent hinge axes 2 are not less than the width of the pedal.

[0015] Preferably, the length of the limiting pull rod is equal to the width of the pedal, and the length of the limiting pull rod is at least twice the length of the slide groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model installs guide rails and movable frames in the floor of the expansion compartment, drives the upper ladder rod, the lower ladder rod and the pedal to fold and unfold through the telescopic folding push rod, drives the movable frame and the folded upper ladder rod, the lower ladder rod and the pedal to move along the guide rails through the screw motor and the ball screw, retracts into the internal storage or extends out of the installation groove, so that the stairs can be unfolded to form a staircase for convenient downward expansion of the compartment when in use, and can be retracted into the floor of the expansion compartment when stored without affecting the expansion and retraction of the expansion compartment. At least one set of stairs is added on the basis of the stairs at the original door position, so that it is more convenient for medical staff and patients to enter and exit and the treatment efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a front cross-sectional view of the utility model;

[0020] Figure 3 It is a top view of the structure below the fixed plate of the utility model.

[0021] In the figure: 1. fixed plate; 2. guide rail; 3. pedal; 4. movable frame; 5. upper ladder rod; 6. lower ladder rod; 7. hinge axis 1; 8. hinge axis 2; 9. limit pull rod; 10. slide groove; 11. folding push rod; 12. screw motor; 13. ball screw; 14. extended car floor; 15. installation groove; 16. cover plate; 17. axle seat; 18. screw nut slide; 19. long slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-3 As shown, the utility model provides a technical solution: a folding staircase for a medical vehicle, comprising a fixed plate 1, a guide rail 2 and a plurality of pedals 3, the fixed plate 1 is fixedly connected to the top of the inner wall of a mounting groove 15 provided in an extended compartment floor 14, and the mounting groove 15 is open on one side corresponding to the pedal 3, and a cover plate 16 is fixedly installed at the bottom of the extended compartment floor 14 at a position corresponding to the mounting groove 15, and the guide rail 2 is fixedly connected to the lower surface of the fixed plate 1;

[0024] A movable frame 4 is slidably connected inside the guide rail 2, and long sliders 19 are fixedly installed on both sides of the movable frame 4. The movable frame 4 is slidably connected to the guide rail 2 through the long sliders 19. An upper ladder rod 5 and a lower ladder rod 6 are movably hinged on both sides of the movable frame 4. A plurality of pedals 3 are equidistantly hinged between the upper ladder rod 5 and the lower ladder rod 6. The upper ladder rod 5 and the lower ladder rod 6 are movably hinged to the movable frame 4 and the pedals 3 through a hinge shaft 1 7 and a hinge shaft 2 8 respectively.

[0025] A limit rod 9 is provided between the pedal 3 and the movable frame 4 and between two adjacent pedals 3, and both ends of the limit rod 9 are respectively movably hinged with the adjacent hinge shaft 1 7 and hinge shaft 2 8, and a slide groove 10 is provided at the position of the limit rod 9 corresponding to the hinge shaft 2 8, and the distance between two adjacent hinge shafts 1 7 and the distance between two adjacent hinge shafts 2 8 are not less than the width of the pedal 3, the length of the limit rod 9 is equal to the width of the pedal 3, and the length of the limit rod 9 is at least twice the length of the slide groove 10;

[0026] A folding push rod 11 connected to the lower ladder rod 6 is movably hinged at the bottom of the movable frame 4. There are two folding push rods 11, which are respectively connected to the two lower ladder rods 6 in transmission. A screw motor 12 and a ball screw 13 are arranged between the guide rail 2 and the movable frame 4. The output shaft of the screw motor 12 is connected to the ball screw 13 in transmission. The screw motor 12 is fixedly installed on the side of the bottom of the guide rail 2 away from the movable frame 4. One end of the ball screw 13 close to the screw motor 12 and the other end close to the movable frame 4 are respectively connected to the guide rail 2 and the cover plate 16 through axle seats 17. The ball screw 13 is connected to a screw nut slide 18 fixedly installed at the bottom of the movable frame 4 in transmission.

[0027] Working principle:

[0028] When folding and storage is required, the folding push rod 11 is extended to push the lower ladder rod 6 and the upper ladder rod 5 to flip upward, and the upper ladder rod 5 and the lower ladder rod 6 squeeze and fold the pedal 3 and the limit rod 9 between the upper ladder rod 5 and the lower ladder rod 6 to complete the folding; the screw motor 12 drives the ball screw 13 to rotate, and the ball screw 13 drives the movable frame 4 and the folded upper ladder rod 5, the lower ladder rod 6 and the limit rod 9 to move to the left along the guide rail 2 into the installation groove 15 through the screw nut slide 18 to complete the storage;

[0029] When it is needed, the screw motor 12 drives the movable frame 4 and the folded upper ladder rod 5, lower ladder rod 6 and limit pull rod 9 through the ball screw 13 and the screw nut slide 18 to move to the right along the guide rail 2 and extend out of the installation slot 15, the folding push rod 11 is shortened, pulling the lower ladder rod 6 and the upper ladder rod 5 to flip downward, the upper ladder rod 5 and the lower ladder rod 6 pull the pedal 3 and the limit pull rod 9 to unfold between the upper ladder rod 5 and the lower ladder rod 6, the limit pull rod 9 limits the unfolding angle and distance to ensure that the pedal 3 remains stable and unfolds to form a staircase.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A folding staircase for a medical vehicle, comprising a fixed plate (1), a guide rail (2) and a plurality of pedals (3), characterized in that: The guide rail (2) is fixedly connected to the lower surface of the fixed plate (1), and a movable frame (4) is slidably connected inside the guide rail (2). An upper ladder rod (5) and a lower ladder rod (6) are movably hinged on both sides of the movable frame (4), and a plurality of pedals (3) are movably hinged between the upper ladder rod (5) and the lower ladder rod (6) at equal intervals. The upper ladder rod (5) and the lower ladder rod (6) are movably hinged to the movable frame (4) and the pedals (3) through a hinge shaft 1 (7) and a hinge shaft 2 (8), respectively. A limit pull rod (9) is provided between the pedal (3) and the movable frame (4) and between two adjacent pedals (3), and the two ends of the limit pull rod (9) are respectively movably hinged to the adjacent hinge shaft 1 (7) and hinge shaft 2 (8), and a slide groove (10) is provided at the position of the limit pull rod (9) corresponding to the hinge shaft 2 (8); A folding push rod (11) connected to the lower ladder rod (6) is movably hinged below the movable frame (4), a screw motor (12) and a ball screw (13) are provided between the guide rail (2) and the movable frame (4), and an output shaft of the screw motor (12) is drivingly connected to the ball screw (13).

2. The folding staircase for medical vehicle according to claim 1, characterized in that: The fixing plate (1) is fixedly connected to the top of the inner wall of a mounting groove (15) provided in the extended compartment floor (14), and the mounting groove (15) is open on one side corresponding to the pedal (3), and a cover plate (16) is fixedly installed at the bottom of the extended compartment floor (14) at a position corresponding to the mounting groove (15).

3. The folding staircase for medical vehicle according to claim 2, characterized in that: The screw motor (12) is fixedly mounted on a side of the bottom of the guide rail (2) away from the movable frame (4), and one end of the ball screw (13) close to the screw motor (12) and one end close to the movable frame (4) are respectively connected to the guide rail (2) and the cover plate (16) via a shaft seat (17).

4. The folding staircase for medical vehicle according to claim 1, characterized in that: The ball screw (13) is in driving connection with a screw nut slide (18) fixedly mounted at the bottom of the movable frame (4).

5. The folding staircase for medical vehicle according to claim 1, characterized in that: There are two folding push rods (11), which are respectively connected in driving connection with the two lower ladder rods (6).

6. The folding staircase for medical vehicle according to claim 1, characterized in that: Long sliders (19) are fixedly mounted on both sides of the movable frame (4), and the movable frame (4) is slidably connected to the guide rails (2) via the long sliders (19).

7. The folding staircase for medical vehicle according to claim 1, characterized in that: The distance between two adjacent hinge shafts 1 (7) and the distance between two adjacent hinge shafts 2 (8) are not less than the width of the pedal (3).

8. The folding staircase for medical vehicle according to claim 7, characterized in that: The length of the limiting pull rod (9) is equal to the width of the pedal (3), and the length of the limiting pull rod (9) is at least twice the length of the slide groove (10).

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