Medical transfer trolley

Abstract

The utility model discloses a medical transfer trolley, which relates to the technical field of medical equipment and comprises a bed body and a base for bearing the bed body. The medical transfer trolley further comprises a height adjusting assembly used for driving the bed body to ascend or descend relative to the base, and the height adjusting assembly comprises at least two adjusting parts oppositely arranged relative to the bed body. The switch located outside the medical pump is adjusted by operating the driving structure, so that the output end of the medical pump stretches out or retracts back, when the output end stretches out, thrust for upward rotation is generated on the first rotating arm, and therefore the bed body with the bottom end hinged to the first rotating arm ascends to achieve ascending of the bed body, and on the contrary, the bed body does not rotate. When the output end retracts, descending of the bed body is achieved, compared with stand column type lifting, the height of the bed body is adjusted in a swinging mode of the first rotating arm, the space occupied by the height adjusting structure for the detection space can be reduced to the maximum extent, the adjusting mode is flexible, and the adjustable range is larger.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a medical transfer vehicle. Background Technique

[0002] A medical transfer vehicle is a medical transportation tool for transferring patients. Patients getting off an ambulance need to be emergently rescued on the medical transfer vehicle first, and then transferred to an operating table by the medical transfer vehicle. Generally speaking, the medical transfer vehicle mainly consists of a base and a bed body arranged on the base. A height adjustment structure is arranged between the base and the bed body to adjust the inspection space between the bed body and the base, so as to cooperate with medical equipment such as a C-arm machine to conduct physical examinations on patients.

[0003] Existing technical problems: The height adjustment structure between the traditional transfer vehicle bed body and the base usually adopts columnar lifting. The columnar structure is located in the inspection space, making the originally limited inspection space even narrower and unable to place some medical equipment that needs to be transferred along with the bed, thus causing inconvenience to the transfer of medical equipment. Therefore, it is necessary to design a new height adjustment structure. Content of the Utility Model

[0004] The purpose of the utility model is to provide a medical transfer vehicle to solve the technical problem that the space adjustment range between the bed body and the base of the medical transfer vehicle in the current market is small, affecting the versatility of the transfer vehicle proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A medical transfer vehicle, comprising:

[0006] A bed body and a base for carrying the bed body;

[0007] The medical transfer vehicle further comprises a height adjustment component for driving the bed body to rise or fall relative to the base. The height adjustment component comprises at least two adjustment parts arranged oppositely with respect to the bed body. The adjustment part comprises:

[0008] A medical pump installed on the base;

[0009] A first rotating arm with one end rotatably connected to the base. The first rotating arm is movably hinged to the output end of the medical pump, and the other end of the first rotating arm is movably hinged to the bottom end of the bed body;

[0010] The medical transfer vehicle further comprises: a driving structure for adjusting all switches located outside the medical pump to control the extension or retraction of the output end.

[0011] As a preferred technical solution of the utility model, the medical transfer vehicle further comprises:

[0012] A bed frame provided at the lower end of the bed body;

[0013] Two frame connecting arms oppositely provided on both sides of the bed frame, one of the frame connecting arms is hingedly connected to the bed frame, and the other frame connecting arm is fixedly connected to the bed frame;

[0014] A fixed shaft fixedly connected to the frame connecting arm;

[0015] A second rotating arm fixedly connected to the fixed shaft at one end, and the other end of the second rotating arm is movably hinged to the first rotating arm.

[0016] As a preferred technical solution of the present invention, the switch is a rotating shaft rotatably provided outside the medical pump. The switch has a first direction and a second direction with opposite rotation directions. When the switch rotates along the first direction, the output end of the medical pump extends, and when the switch rotates along the second direction, the output end of the medical pump retracts.

[0017] As a preferred technical solution of the present invention, the driving structure includes:

[0018] A first driving unit for driving the switch to rotate along the first direction;

[0019] A second driving unit for driving the switch to rotate along the second direction.

[0020] As a preferred technical solution of the present invention, the first driving unit includes:

[0021] A first driving rod rotatably provided in the base;

[0022] A hinge seat connected to the first driving rod;

[0023] A first driven rod rotatably connected to the hinge seat at one end;

[0024] A first swing arm rotatably connected to the other end of the first driven rod, and the first swing arm is fixedly connected to the switch.

[0025] As a preferred technical solution of the present invention, at least one end of the first driving rod penetrates through and extends out of the base and is connected with a first pedal.

[0026] As a preferred technical solution of the present invention, the second driving unit includes:

[0027] A second driven rod rotatably provided in the base;

[0028] A first linkage fixedly connected to one end of the second driven rod;

[0029] A second linkage hingedly connected to the other end of the first linkage;

[0030] A movable tube with one end hingedly connected to the second linkage member;

[0031] A sleeve fixedly arranged in the base, and the other end of the movable tube penetrates through the sleeve and is elastically connected thereto;

[0032] A second swing arm fixedly arranged on the switch, and the force-receiving end of the second swing arm is located in the movement track of the movable tube.

[0033] As a preferred technical solution of the present invention, at least one end of the second driven rod penetrates through and extends out of the base and is connected with a rotating member, a second driving rod is rotatably connected to one side of the rotating member, and the second driving rod is connected with a second pedal.

[0034] As a preferred technical solution of the present invention, one end of the movable tube is provided with a hinge hole that movably cooperates with the second linkage member, a spring is sleeved outside the movable tube, a first pin hole is opened outside the movable tube, a second pin hole that matches the first pin hole is opened outside the sleeve, and first positioning pins are respectively arranged in the first pin hole and the second pin hole, and both sides of the spring are fixed by the two first positioning pins.

[0035] As a preferred technical solution of the present invention, a first strip-shaped groove is opened outside the movable tube, a second strip-shaped groove that matches the first strip-shaped groove is opened outside the sleeve, and a second positioning pin penetrates through the first strip-shaped groove and the second strip-shaped groove.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] The present invention adjusts the switch located outside the medical pump by operating the driving structure, so that the output end of the medical pump extends or retracts. When the output end extends, an upward rotating thrust will be generated on the first rotating arm, so that the bed body hinged to the first rotating arm at the bottom rises, realizing the elevation of the bed body. On the contrary, when the output end retracts, the bed body descends. Compared with the column type lifting, the swing mode of the first rotating arm is adopted to adjust the height of the bed body, which can minimize the occupied space of the height adjustment structure itself for the detection space, the adjustment method is flexible and the adjustable range is larger, meeting the detection needs of various medical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is an external three-dimensional structure schematic diagram of the present invention;

[0039] Figure 2 It is a front view structure schematic diagram of the present invention;

[0040] Figure 3Schematic three-dimensional structure diagram of the housing and the first rotating arm of the present utility model;

[0041] Figure 4 Schematic three-dimensional structure diagram of the upper end of the base of the present utility model;

[0042] Figure 5 Schematic three-dimensional structure diagram of the bottom of the base of the present utility model.

[0043] Figure 6 Schematic three-dimensional structure diagram of the first driving rod, the first driven rod, the first swing arm and the medical pump of the present utility model;

[0044] Figure 7 Schematic three-dimensional structure diagram of the base of the present utility model;

[0045] Figure 8 Schematic three-dimensional structure diagram of the separated state of the movable tube and the sleeve of the present utility model;

[0046] Figure 9 Schematic three-dimensional structure diagram of the combined state of the movable tube and the sleeve of the present utility model.

[0047] In the figure: 1. Housing; 2. Bed body; 3. Bed frame; 4. Base; 5. Pulley; 6. First pedal; 7. First driving rod; 8. Hinge seat; 9. First driven rod; 10. First swing arm; 11. Mounting bracket; 12. Medical pump; 1201. Switch; 13. Hinge plate; 14. First rotating arm; 15. Support plate; 16. Second rotating arm; 17. Fixed shaft; 18. Frame connecting arm; 19. Connecting bracket; 20. Second pedal; 21. Second driving rod; 22. Rotating part; 23. Second driven rod; 24. First linkage; 25. Second linkage; 26. Sleeve; 27. Second swing arm; 28. Movable tube; 29. First pin hole; 30. Second pin hole; 31. Spring; 32. First strip-shaped groove; 33. Second strip-shaped groove; 34. Hinge hole. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0049] Please refer to Figures 1-9 , the present utility model provides a technical solution: a medical transport vehicle, including:

[0050] A bed body 2 and a base 4 for carrying the bed body 2;

[0051] The medical transfer vehicle further includes a height adjustment component for driving the bed body 2 to rise or fall relative to the base 4. The height adjustment component includes two adjustment parts arranged oppositely with respect to the bed body 2. The adjustment part includes:

[0052] A medical pump 12 installed on the base 4;

[0053] A first rotating arm 14 whose one end is rotatably connected to the base 4. The first rotating arm 14 is movably hinged to the output end of the medical pump 12, and the other end of the first rotating arm 14 is movably hinged to the bottom end of the bed body 2;

[0054] The medical transfer vehicle further includes: a driving structure for adjusting all switches 1201 located outside the medical pump 12 to control the extension or retraction of the output end;

[0055] By adopting the above technical solution, the height of the bed body 2 can be adjusted. During use, the switch 1201 located outside the medical pump 12 is adjusted through the driving structure, so as to drive the extension or retraction of the output end of the medical pump 12. When the output end extends, an upward thrust will be generated on the first rotating arm 14, so that the bed body 2 hinged to the bottom end of the first rotating arm 14 rises, realizing the elevation of the bed body 2. On the contrary, when the output end retracts, a downward pulling force will be generated on the first rotating arm 14, so that the bed body 2 hinged to the bottom end of the first rotating arm 14 descends, realizing the lowering of the bed body 2, thereby adjusting the space size between the bed body 2 and the base 4 according to the specifications of the C-arm machine.

[0056] Such as Figure 2 and Figure 4 shown, in this embodiment, an installation frame 11 is provided in the base 4. The installation frame 11 is used to fix the medical pump 12. A support plate 15 is provided in the base 4. The support plate 15 is rotatably connected to the first rotating arm 14. The first rotating arm 14 is provided with a hinge plate 13. The hinge plate 13 is hinge-connected to the output end of the medical pump 12. The medical transfer vehicle further includes: a bed frame 3 provided at the lower end of the bed body 2; two frame connecting arms 18 oppositely arranged on both sides of the bed frame 3. One of the frame connecting arms 18 is hinge-connected to the bed frame 3, and the other frame connecting arm 18 is fixedly connected to the bed frame 3; a fixed shaft 17 fixedly connected to the frame connecting arm 18; a second rotating arm 16 whose one end is fixedly connected to the fixed shaft 17. The other end of the second rotating arm 16 is movably hinged to the first rotating arm 14;

[0057] Adopting the above technical solution can achieve the hinged connection between the second rotating arm 16 and the bottom end of the bed body 2. During use, the output end of the medical pump 12 drives the first rotating arm 14 to rotate through the hinge plate 13. The first rotating arm 14 drives the second rotating arm 16 to move. The second rotating arm 16 drives the fixed shaft 17 fixedly connected thereto to move synchronously. The fixed shaft 17 drives the frame connecting arm 18 connected thereto to move synchronously, thereby driving the bed frame 3 connected to the frame connecting arm 18 to rise and fall, so as to achieve the adjustment of the height of the bed body 2.

[0058] As Figure 4 shown, in this embodiment, the medical pump 12 is a MK5 series medical pump of Power-Packer Company. The switch 1201 is a rotating shaft rotatably provided outside the medical pump 12. The switch 1201 has a first direction and a second direction with opposite rotation directions. When the switch 1201 rotates along the first direction, the output end of the medical pump 12 extends. When the switch 1201 rotates along the second direction, the output end of the medical pump 12 retracts;

[0059] In this embodiment, the driving structure includes: a first driving unit for driving the switch 1201 to rotate along the first direction; a second driving unit for driving the switch 1201 to rotate along the second direction;

[0060] Adopting the above technical solution can independently control the rising and falling of the bed body 2 respectively.

[0061] As Figure 4 and Figure 6 shown, in this embodiment, the first driving unit includes: a first driving rod 7 rotatably provided in the base 4; a hinge seat 8 connected to the first driving rod 7; a first driven rod 9 rotatably connected to one end of the hinge seat 8; a first swing arm 10 rotatably connected to the other end of the first driven rod 9. The first swing arm 10 is fixedly connected to the switch 1201; at least one end of the first driving rod 7 penetrates and extends out of the base 4 and is connected with a first pedal 6;

[0062] Adopting the above technical solution can control the switch 1201 of the medical pump 12 to rotate along the first direction, thereby raising the bed frame 3. During use, stepping on the first pedal 6 can drive the first driving rod 7 to rotate. The first driving rod 7 drives the hinge seat 8 to rotate. The hinge seat 8 drives the first driven rod 9 to move. The first driven rod 9 drives the first swing arm 10 to rotate, thereby driving the switch 1201 connected to the first swing arm 10 to rotate along the first direction. The output end of the medical pump 12 drives the first rotating arm 14 to rotate through the hinge plate 13, so that the first rotating arm 14 cooperates with the second rotating arm 16, the fixed shaft 17 and the frame connecting arm 18 to drive the bed frame 3 to rise.

[0063] As Figure 5 and Figure 6As shown, in this embodiment, the second driving unit includes: a second driven rod 23 rotatably disposed in the base 4; a first linkage 24 fixedly connected to one end of the second driven rod 23; a second linkage 25 hinge-connected to the other end of the first linkage 24; a movable tube 28 hinge-connected to one end of the second linkage 25; a sleeve 26 fixedly disposed in the base 4, and the other end of the movable tube 28 passes through the sleeve 26 and is elastically connected thereto; a second swing arm 27 fixedly disposed on the switch 1201, and the force-receiving end of the second swing arm 27 is located in the movement trajectory of the movable tube 28; at least one end of the second driven rod 23 penetrates and extends out of the base 4 and is connected with a rotating member 22, one side of the rotating member 22 is rotatably connected with a second driving rod 21, and the second driving rod 21 is connected with a second pedal 20;

[0064] Adopting the above technical solution can control the switch 1201 of the medical pump 12 to rotate along the second direction, thereby lowering the bed frame 3. When in use, stepping on the middle of the second pedal 20 can drive the two second driving rods 21 connected thereto to move down synchronously. The second driving rod 21 cooperates with the rotating member 22 to drive the second driven rod 23 to rotate. The second driven rod 23 cooperates with the first linkage 24 and the second linkage 25 to drive the movable tube 28 to extend out of the sleeve 26, so that one end of the movable tube 28 abuts against the force-receiving end of the second swing arm 27, thereby driving the switch 1201 to rotate along the second direction through the second swing arm 27. The output end of the medical pump 12 drives the first rotating arm 14 to rotate through the hinge plate 13, so that the first rotating arm 14 cooperates with the second rotating arm 16, the fixed shaft 17 and the frame connecting arm 18 to drive the bed frame 3 to descend;

[0065] When it is necessary to tilt the bed frame 3, just step on the other side of the second pedal 20, so that the first rotating arm 14 on one side of the base 4 remains relatively stationary, and the first rotating arm 14 on the other side controls the corresponding end of the bed body 2 to rise or fall, so that the bed body 2 is in a tilted state, which is beneficial to adjusting the lying posture of the patient.

[0066] It should be further noted that the switch 1201 of the medical pump 12 has a reset dead travel, similar to the structural principle of a jack. When the operator's foot leaves the second pedal 20, since the movable tube 28 is elastically slidably arranged in the sleeve 26, the movable tube 28 will reset and retract into the sleeve 26 under the elastic action. The movable tube 28 drives the second driven rod 23 to reset through the second linkage 25 and the first linkage 24. The second driven rod 23 cooperates with the rotating member 22 and the second driving rod 21 to drive the second pedal 20 to reset, which is convenient for subsequent adjustment. At the same time, since the movable tube 28 is elastically slidably arranged in the sleeve 26, when the first pedal 6 is stepped on, the second swing arm 27 will push the movable tube 28 to retract it into the sleeve 26, and there will be no problem of rising and falling, preventing movement interference. That is, the elastic sliding arrangement between the sleeve 26 and the movable tube 28 ensures that the first driving unit and the second driving unit do not interfere with each other during operation.

[0067] As Figure 8 and Figure 9 shown, in this embodiment, one end of the movable tube 28 is provided with a hinge hole 34 that is movably engaged with the second linkage 25. A spring 31 is sleeved outside the movable tube 28. A first pin hole 29 is provided outside the movable tube 28, and a second pin hole 30 that is matched with the first pin hole 29 is provided outside the sleeve 26. First positioning pins are respectively arranged in the first pin hole 29 and the second pin hole 30, and both sides of the spring 31 are fixed by the two first positioning pins.

[0068] Adopting the above technical solution can arrange the movable tube 28 in the sleeve 26 in an elastically sliding manner. Due to the adoption of the first positioning pins, the spring 31 can be restricted between the two first positioning pins, ensuring that the elastic force of the spring 31 can be stably transmitted to the movable tube 28.

[0069] As Figure 8 and Figure 9 shown, in this embodiment, a first strip groove 32 is provided outside the movable tube 28, and a second strip groove 33 that is matched with the first strip groove 32 is provided outside the sleeve 26. A second positioning pin is penetrated through the first strip groove 32 and the second strip groove 33.

[0070] Adopting the above technical solution ensures that the movable tube 28 will not completely disengage from the sleeve 26 and prevents the two from separating. By providing strip grooves and arranging second positioning pins, on the one hand, the rotational freedom of the sleeve 26 in the movable tube 28 can be restricted, and on the other hand, the movable tube 28 and the spring 31 can be prevented from falling out of the sleeve 26.

[0071] As Figure 3 and Figure 6As shown in the figure, in this embodiment, a housing 1 is sleeved outside the base 4. Activity slots for the first rotating arm 14 to move are provided on both sides of the housing 1. A connecting bracket 19 is arranged in the base 4. The connecting bracket 19 consists of two plate members. Rotating slots are provided at the joint where the two plate members are in contact with each other. The first driving rod 7 and the second driven rod 23 are rotatably arranged in the rotating slots. The two plate members are closed and fixed to the base 4 by bolts; a pulley 5 is arranged at the lower end of the base 4;

[0072] Adopting the above technical solution can protect the structure in the base 4. By arranging the housing 1 to cover the base 4, it can prevent the mechanical components in the base 4 from being damaged from the outside, improve the service life of the device. At the same time, the split design of the connecting bracket 19 is beneficial to disassembling the connecting bracket 19 when maintaining the first driving rod 7 and the second driven rod 23, which is convenient for maintenance.

[0073] Working principle: When it is necessary to raise the bed body 2, stepping on the first pedal 6 can drive the first driving rod 7 to rotate. The first driving rod 7 drives the hinge seat 8 to rotate. The hinge seat 8 drives the first driven rod 9 to move. The first driven rod 9 drives the first swing arm 10 to rotate, thereby driving the switch 1201 connected to the first swing arm 10 to rotate along the first direction. The output end of the medical pump 12 drives the first rotating arm 14 to rotate through the hinge plate 13, so that the first rotating arm 14 cooperates with the second rotating arm 16, the fixed shaft 17 and the frame connecting arm 18 to drive the bed frame 3 to rise;

[0074] When it is necessary to lower the bed body 2, stepping on the middle of the second pedal 20 can drive the two second driving rods 21 connected to it to move downward synchronously. The second driving rods 21 cooperate with the rotating parts 22 to drive the second driven rod 23 to rotate. The second driven rod 23 cooperates with the first linkage part 24 and the second linkage part 25 to drive the movable tube 28 to extend out of the sleeve 26, so that one end of the movable tube 28 hits the stress end of the second swing arm 27, thereby driving the switch 1201 to rotate along the second direction through the second swing arm 27. The output end of the medical pump 12 drives the first rotating arm 14 to rotate through the hinge plate 13, so that the first rotating arm 14 cooperates with the second rotating arm 16, the fixed shaft 17 and the frame connecting arm 18 to drive the bed frame 3 to lower;

[0075] When it is necessary to tilt the bed frame 3, just step on the other side of the second pedal 20, so that the first rotating arm 14 on one side of the base 4 is relatively stationary, and the first rotating arm 14 on the other side controls the corresponding end of the bed body 2 to rise or fall, so that the bed body 2 is in a tilted state, which is beneficial to adjusting the lying posture of the patient.

[0076] Thus, a series of operations are completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0077] It will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, and that the present utility model can be implemented in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, in any respect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claim concerned.

Claims

1. A medical transport vehicle comprising: A bed (2) and a base (4) for supporting the bed (2); The medical transport vehicle further comprises a height adjustment assembly for driving the bed (2) to be raised or lowered relative to the base (4), wherein the height adjustment assembly comprises at least two adjustment parts arranged relative to the bed (2), and the adjustment parts comprise: a medical pump (12) mounted on the base (4); a first rotating arm (14) having one end rotatably connected to the base (4), the first rotating arm (14) being movably hinged to the output end of the medical pump (12), and the other end of the first rotating arm (14) being movably hinged to the bottom end of the bed (2); The medical transport vehicle further comprises a driving structure for adjusting all switches (1201) located outside the medical pump (12) to control the extension or retraction of the output end.

2. The medical transport vehicle according to claim 1, characterized in that: The medical transport vehicle also includes: a bed frame (3) arranged at the lower end of the bed body (2); Two frame connecting arms (18) are relatively arranged on both sides of the bed frame (3), one of the frame connecting arms (18) is hingedly connected to the bed frame (3), and the other frame connecting arm (18) is fixedly connected to the bed frame (3); a fixed shaft (17) fixedly connected to the frame connecting arm (18); One end of the second rotating arm (16) is fixedly connected to the fixed shaft (17), and the other end of the second rotating arm (16) is movably hinged to the first rotating arm (14).

3. The medical transport vehicle according to claim 2, characterized in that: The switch (1201) is a rotating shaft that is rotatably arranged outside the medical pump (12). The switch (1201) has a first direction and a second direction of rotation that are opposite to each other. When the switch (1201) rotates along the first direction, the output end of the medical pump (12) extends, and when the switch (1201) rotates along the second direction, the output end of the medical pump (12) retracts.

4. The medical transport vehicle according to claim 3, characterized in that: The driving structure includes: a first driving unit for driving the switch (1201) to rotate along a first direction; A second driving unit for driving the switch (1201) to rotate along a second direction.

5. The medical transport vehicle according to claim 4, characterized in that: The first driving unit includes: Rotating a first driving rod (7) provided in the base (4); a hinge seat (8) connected to the first driving rod (7); a first driven rod (9) having one end rotatably connected to the hinge seat (8); A first swing arm (10) is rotatably connected to the other end of the first driven rod (9), and the first swing arm (10) is fixedly connected to the switch (1201).

6. The medical transport vehicle according to claim 5, characterized in that: At least one end of the first driving rod (7) extends through the base (4) and is connected to the first pedal (6).

7. The medical transport vehicle according to claim 4, characterized in that: The second driving unit includes: Rotating a second driven rod (23) disposed in the base (4); a first linking member (24) having one end fixedly connected to the second driven rod (23); a second linking member (25) hingedly connected to the other end of the first linking member (24); a movable tube (28) having one end hingedly connected to the second linking member (25); A sleeve (26) is fixedly arranged in the base (4), and the other end of the movable tube (28) passes through the sleeve (26) and is elastically connected thereto; A second swing arm (27) is fixedly arranged on the switch (1201), and a force-bearing end of the second swing arm (27) is located in the movable track of the movable tube (28).

8. The medical transport vehicle according to claim 7, characterized in that: At least one end of the second driven rod (23) extends through the base (4) and is connected to a rotating member (22); one side of the rotating member (22) is rotatably connected to a second driving rod (21); and the second driving rod (21) is connected to a second pedal (20).

9. The medical transport vehicle according to claim 7, characterized in that: One end of the movable tube (28) is provided with a hinge hole (34) that is movably matched with the second connecting member (25); the outer portion of the movable tube (28) is provided with a spring (31); the outer portion of the movable tube (28) is provided with a first pin hole (29); the outer portion of the sleeve (26) is provided with a second pin hole (30) that is matched with the first pin hole (29); first positioning pins are respectively provided in the first pin hole (29) and the second pin hole (30); and the two sides of the spring (31) are fixed by the two first positioning pins.

10. The medical transport vehicle according to claim 9, characterized in that: The movable tube (28) is provided with a first strip groove (32) on the outside, and the sleeve (26) is provided with a second strip groove (33) matched with the first strip groove (32) on the outside. A second positioning pin is provided through the first strip groove (32) and the second strip groove (33).

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