Limiting and locking mechanism of wheel stretcher and wheel stretcher
By designing the limit locking mechanism of the stretcher truck, the limit relationship between the limit shaft and the limit block and the movable hook is used to realize the automatic fixing of the stretcher truck, solving the problem of inefficient fixing in the existing technology, and improving the Fixed efficiency and effect.
Patent Information
- Application Number
- CN202420493515.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The existing stretcher truck fixing equipment needs to be manually fixed to the moving wheels one by one when in use, resulting in inefficient fixation and poor effect.
Design a limit locking mechanism of a stretcher truck, including a fixed seat, a rod structure, a limit block, a movable hook and a limit shaft. Through the limit relationship between the limit shaft and the limit block and a movable hook, the stretcher will be automatically fixed. Cars, avoid manual fixing.
The fixing efficiency of stretcher trucks in ambulances is improved, the need for manual operation is reduced, and the fixing effect is enhanced.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical auxiliary equipment, and in particular to a limit locking mechanism of a stretcher trolley and the stretcher trolley. Background Art
[0002] A stretcher is a bed used to support patients in an ambulance. It meets the needs of the patient's condition and is convenient for patients and the injured to lie down. Currently, the basic structure of a stretcher is a stretcher on the top and moving wheels on the bottom. When the ambulance is driving, the moving wheels will move inside the ambulance. Therefore, it is necessary to use fixing equipment to fix the stretcher bed to avoid accidents.
[0003] However, the existing stretcher fixing equipment used in ambulances requires manual fixing of the moving wheels one by one during use, which results in low fixing efficiency and poor fixing effect. Utility Model Content
[0004] The problem to be solved by the utility model is: how to improve the fixing efficiency of the stretcher in the ambulance.
[0005] The utility model provides a limit locking mechanism for a stretcher trolley, comprising: a fixed seat, a rod structure, a limit block, a movable hook and a limit shaft, wherein the limit shaft is used to be connected to a chassis of the stretcher trolley, the fixed seat is used to be connected to a compartment of an ambulance, the rod structure is connected to the fixed seat, the limit block is arranged on the rod structure, the movable hook is movably connected to the rod structure, and the movable hook is used to move toward a direction close to the limit block so as to limit the limit shaft between the limit block and the movable hook.
[0006] The limit locking mechanism of a stretcher provided by the utility model has the following beneficial effects compared with the prior art:
[0007] The limit locking mechanism of the stretcher trolley described in the utility model, when in use, the fixing seat is pre-connected in the compartment of the ambulance, and the limit shaft is connected to the bottom frame of the stretcher trolley. When the stretcher trolley needs to be fixed in the compartment of the ambulance, it is only necessary to move the stretcher trolley toward the direction close to the rod structure and abut against the rod structure, and the limit shaft is located between the limit block and the movable hook, so that the movable hook can be moved toward the direction close to the limit block to limit the limit shaft between the limit block and the movable hook, thereby limiting the movement of the stretcher trolley in the compartment of the ambulance. In this way, there is no need to manually fix the moving wheels of the stretcher trolley one by one, thereby improving the fixing efficiency of the stretcher trolley in the ambulance.
[0008] Optionally, the rod structure includes an outer tube and an inner tube, the outer tube is fixedly connected to the fixed seat, the inner tube is slidably connected inside the outer tube, the limit block is connected to one end of the outer tube, and the movable hook is connected to one end of the inner tube close to the limit block.
[0009] Optionally, the outer tube is a hollow circular tube with open ends, and a spring is arranged inside the outer tube, one end of the spring is connected to the outer tube, and the other end is connected to the inner tube, a protruding structure is provided on the inner tube, a limiting hole is provided on the outer tube, and the limiting hole is located between the limiting block and the movable hook, the inner tube is used to drive the movable hook to move in a direction away from the limiting block until the protruding structure is engaged with the limiting hole, and when the limiting shaft abuts against the protruding structure, the spring is used to reset the movable hook under the action of the rebound force, so as to limit the limiting shaft between the limiting block and the movable hook.
[0010] Optionally, the movable hook includes a connecting portion and a hook portion that are integrally connected, the connecting portion is sleeved on the inner tube, and the hook portion is used to abut against the limiting shaft.
[0011] Optionally, the rod structure further includes a handle, the handle is connected to an end of the inner tube away from the movable hook, and the handle is used to be sleeved on the outer tube.
[0012] Optionally, the end surface of the limit block facing the stretcher vehicle is an arc-shaped surface, and the arc-shaped surface is used to guide the limit shaft to move to between the limit block and the movable hook.
[0013] Optionally, the fixing seat includes a base and a bracket which are connected to each other, the base is used to be connected to the compartment of the ambulance by bolts, the bracket is provided with a first through hole for the rod structure to pass through, and the rod structure is connected to the first through hole.
[0014] Optionally, the limiting shaft includes a shaft rod and a connecting seat connected to each other, a second through hole is formed on the connecting seat, and the connecting seat is used to be sleeved on the bottom frame of the stretcher through the second through hole.
[0015] Optionally, it also includes a connecting frame, which is arranged on the rod structure, and a magnet is arranged on the connecting frame. The stretcher is provided with a Hall magnetic control device for generating magnetic induction with the magnet. When the Hall magnetic control device generates magnetic induction with the magnet, the lifting height of the stretcher is automatically locked.
[0016] In addition, the present invention further provides a stretcher trolley, comprising the limit locking mechanism of the stretcher trolley as described above.
[0017] Since the technical improvement and technical effect of the stretcher trolley are the same as the limit locking mechanism of the stretcher trolley, the technical effect of the stretcher trolley will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the limit locking mechanism of the stretcher trolley according to an embodiment of the utility model;
[0019] Figure 2 The utility model is a schematic structural diagram of the stretcher trolley's limit locking mechanism connected to the stretcher trolley.
[0020] Description of reference numerals:
[0021] 1. Fixed seat; 11. Base; 12. Bracket; 2. Rod structure; 21. Outer tube; 22. Inner tube; 23. Handle; 3. Limit block; 31. Arc surface; 4. Movable hook; 5. Limit axis; 51. Shaft; 52. Connecting seat; 6. Connecting frame; 7. Base frame; 8. Hall magnetic control device. DETAILED DESCRIPTION
[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0023] In the description of the present invention, the directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “top”, “bottom”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.
[0026] Moreover, the Z-axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction of the arrow of the Z-axis) represents the top, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the bottom; the X-axis in the accompanying drawings represents the longitudinal direction, that is, the front and back position, and the positive direction of the X-axis (that is, the direction of the arrow of the X-axis) represents the front, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the back; the Y-axis in the accompanying drawings represents the horizontal direction, that is, the left and right position, and the positive direction of the Y-axis (that is, the direction of the arrow of the Y-axis) represents the right, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the left.
[0027] It should also be noted that the aforementioned Z-axis, X-axis and Y-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] like Figures 1 to 2 As shown, the limiting locking mechanism of the stretcher trolley of the utility model embodiment comprises: a fixed seat 1, a rod structure 2, a limiting block 3, a movable hook 4 and a limiting shaft 5, wherein the limiting shaft 5 is used to be connected to the base frame 7 of the stretcher trolley, the fixed seat 1 is used to be connected to the compartment of the ambulance, the rod structure 2 is connected to the fixed seat 1, the limiting block 3 is arranged on the rod structure 2, the movable hook 4 is movably connected to the rod structure 2, and the movable hook 4 is used to move toward the direction close to the limiting block 3 to limit the limiting shaft 5 between the limiting block 3 and the movable hook 4.
[0029] In this embodiment, combined with the attached Figure 1 and attached Figure 2 As shown, when in use, the fixing seat 1 is pre-connected in the compartment of the ambulance, and the limiting shaft 5 is connected to the bottom frame 7 of the stretcher. When the stretcher needs to be fixed in the compartment of the ambulance, it is only necessary to move the stretcher toward the direction close to the rod structure 2 (attached Figure 1 The movable hook 4 is moved toward the direction close to the limit block 3 (the direction opposite to the Y axis) and abuts against the rod structure 2, and the limit axis 5 is located between the limit block 3 and the movable hook 4, so that the movable hook 4 can be moved toward the direction close to the limit block 3 (the direction opposite to the Y axis). Figure 1The stretcher trolley is moved in the opposite direction of the X-axis to limit the limit shaft 5 between the limit block 3 and the movable hook 4, thereby limiting the movement of the stretcher trolley in the compartment of the ambulance. In this way, there is no need to manually fix the moving wheels of the stretcher trolley one by one, thereby improving the fixing efficiency of the stretcher trolley in the ambulance.
[0030] Optionally, the rod structure 2 includes an outer tube 21 and an inner tube 22, the outer tube 21 is fixedly connected to the fixing seat 1, the inner tube 22 is slidably connected inside the outer tube 21, the limit block 3 is connected to one end of the outer tube 21, and the movable hook 4 is connected to one end of the inner tube 22 close to the limit block 3.
[0031] In this embodiment, combined with the attached Figure 1 As shown, the rod structure 2 includes two outer tubes 21 and inner tubes 22 which are sleeved with each other, wherein the inner tube 22 is slidably connected to the outer tube 21, the outer tube 21 can be connected to the fixing seat 1 by bolts, and the limit block 3 can be connected to the front end of the outer tube 21 by bolts (see FIG. Figure 1 The movable hook 4 can be connected to the end of the inner tube 22 close to the limit block 3 by bolts, that is, the front end of the inner tube 22 (attached Figure 1 In this way, when the inner tube 22 moves relative to the outer tube 21, the movable hook 4 can be driven toward or away from the limit block 3 (see FIG. Figure 1 X-axis direction).
[0032] Optionally, the outer tube 21 is a hollow circular tube with open ends, and a spring is arranged inside the outer tube 21, one end of the spring is connected to the outer tube 21, and the other end is connected to the inner tube 22, and a protruding structure is arranged on the inner tube 22, and a limiting hole is opened on the outer tube 21, and the limiting hole is located between the limiting block 3 and the movable hook 4, and the inner tube 22 is used to drive the movable hook 4 to move in a direction away from the limiting block 3 until the protruding structure is engaged with the limiting hole, and when the limiting shaft 5 abuts against the protruding structure, the spring is used to reset the movable hook 4 under the action of the rebound force, so as to limit the limiting shaft 5 between the limiting block 3 and the movable hook 4.
[0033] In this embodiment, combined with the attached Figure 1 As shown, the outer tube 21 is a hollow circular tube with both ends open, and a spring (not shown in the figure) is arranged inside the outer tube 21, one end of the spring is connected to the outer tube 21, and the other end is connected to the inner tube 22, and the inner tube 22 drives the movable hook 4 to move away from the limit block 3 (see Figure 2). Figure 1When the inner tube 22 moves in the positive direction of the center X-axis, the spring will be stretched. In the process of the inner tube 22 driving the movable hook 4 to move away from the limit block 3, the protruding structure on the inner tube 22 will be clamped in the limit hole on the outer tube 21, so that the inner tube 22 will not be able to move. When the limit shaft 5 abuts against the protruding structure, the limit shaft 5 presses the protruding structure back into the inner part of the outer tube 21. At this time, the spring will reset the movable hook 4 under the action of the rebound force to limit the limit shaft 5 between the limit block 3 and the movable hook 4.
[0034] Optionally, the movable hook 4 includes a connecting portion and a hook portion that are integrally connected, the connecting portion is sleeved on the inner tube 22 , and the hook portion is used to abut against the limiting shaft 5 .
[0035] In this embodiment, combined with the attached Figure 1 As shown, the connecting portion of the movable hook 4 can be sleeved on the inner tube 22 and can be connected to the inner tube 22 by bolts. The bent hook portion is used to abut against the limiting shaft 5, wherein the bent hook portion of the movable hook 4 and the inner tube 22 can limit the limiting shaft 5 in the adjacent Figure 1 The displacement in the Y-axis direction, the connection part of the movable hook 4 and the limit block 3 can limit the limit axis 5 in the adjacent Figure 1 The displacement in the X-axis direction.
[0036] Optionally, the rod structure 2 further includes a handle 23 , which is connected to an end of the inner tube 22 away from the movable hook 4 , and the handle 23 is used to be sleeved on the outer tube 21 .
[0037] In this embodiment, combined with the attached Figure 1 As shown, the handle 23 can be a hollow round tube with one end open, and the handle 23 is connected to the end of the inner tube 22 away from the movable hook 4, that is, the rear end of the inner tube 22 (attached Figure 1 When in use, the inner tube 22 can be driven to move relative to the outer tube 21 by manually pushing and pulling the handle 23.
[0038] Optionally, the end surface of the limit block 3 facing the stretcher vehicle is an arcuate surface 31 , and the arcuate surface 31 is used to guide the limit shaft 5 to move to between the limit block 3 and the movable hook 4 .
[0039] In this embodiment, combined with the attached Figure 1 As shown, the limit block 3 faces the end surface of the stretcher (attached Figure 1 The arc surface 31 (in the positive direction of the Y axis) is used to guide the limiting shaft 5 to fall between the limiting block 3 and the movable hook 4.
[0040] Optionally, the fixing seat 1 includes a base 11 and a bracket 12 which are connected to each other, the base 11 is used to be connected to the compartment of the ambulance by bolts, the bracket 12 is provided with a first through hole for the rod structure 2 to pass through, and the rod structure 2 is connected at the first through hole.
[0041] In this embodiment, combined with the attached Figure 1 As shown, the lower end of the bracket 12 (attached Figure 1 The bracket 12 is provided with a first through hole for the rod structure 2 to pass through, and the rod structure 2 can be connected to the bracket 12 by bolts at the first through hole to fix the rod structure 2 on the bracket 12.
[0042] Optionally, the limiting shaft 5 includes a shaft rod 51 and a connecting seat 52 which are connected to each other. A second through hole is formed on the connecting seat 52, and the connecting seat 52 is used to be sleeved on the bottom frame 7 of the stretcher through the second through hole.
[0043] In this embodiment, combined with the attached Figure 1 and attached Figure 2 As shown, the connecting seat 52 can be sleeved on the long rod of the base frame 7 of the stretcher trolley through the second through hole thereon, and the connecting seat 52 can also be connected to the long rod of the base frame 7 of the stretcher trolley by bolts to fix the connecting seat 52 relative to the base frame 7 of the stretcher trolley, and the shaft 51 can be connected to the connecting seat 52 by welding.
[0044] Optionally, the limit locking mechanism of the stretcher trolley also includes a connecting frame 6, which is arranged on the rod structure 2, and a magnet is arranged on the connecting frame 6. The stretcher trolley is provided with a Hall magnetic control device 8 for magnetic induction with the magnet. When the Hall magnetic control device 8 generates magnetic induction with the magnet, the lifting height of the stretcher trolley is automatically locked.
[0045] In this embodiment, combined with the attached Figure 1 and attached Figure 2As shown, the connecting frame 6 can be connected to the rod structure 2 by bolts, and a cavity structure for accommodating a magnet is provided on the connecting frame 6. A Hall magnetic control device 8 for generating magnetic induction with the magnet is provided on the stretcher trolley. When the limit shaft 5 is limited between the limit block 3 and the movable hook 4, the Hall magnetic control device 8 on the stretcher trolley generates magnetic induction with the magnet on the connecting frame 6, so as to automatically lock the lifting height of the stretcher trolley. Specifically, an oil cylinder controlled by a controller is provided on the stretcher trolley, and the oil cylinder is used to adjust the height of the stretcher trolley from the ground. The Hall magnetic control device 8 is electrically connected to the controller for controlling the action of the oil cylinder. When the Hall magnetic control device 8 on the stretcher trolley generates magnetic induction with the magnet on the connecting frame 6, the Hall magnetic control device 8 sends an electrical signal to the controller to stop the action of the oil cylinder, so as to automatically lock the lifting height of the stretcher trolley.
[0046] In addition, the present invention further provides a stretcher trolley, comprising the limit locking mechanism of the stretcher trolley as described above.
[0047] Since the technical improvement and technical effect of the stretcher trolley are the same as the limit locking mechanism of the stretcher trolley, the technical effect of the stretcher trolley will not be described in detail.
[0048] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0049] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.
Claims
1. A limit locking mechanism for a stretcher, characterized in that: include: A fixed seat (1), a rod structure (2), a limit block (3), a movable hook (4) and a limit shaft (5), wherein the limit shaft (5) is used to be connected to a chassis (7) of a stretcher, the fixed seat (1) is used to be connected to a compartment of an ambulance, the rod structure (2) is connected to the fixed seat (1), the limit block (3) is arranged on the rod structure (2), the movable hook (4) is movably connected to the rod structure (2), and the movable hook (4) is used to move toward the limit block (3) to limit the limit shaft (5) between the limit block (3) and the movable hook (4).
2. The limit locking mechanism of the stretcher trolley according to claim 1, characterized in that: The rod structure (2) comprises an outer tube (21) and an inner tube (22); the outer tube (21) is fixedly connected to the fixing seat (1); the inner tube (22) is slidably connected inside the outer tube (21); the limit block (3) is connected to one end of the outer tube (21); and the movable hook (4) is connected to one end of the inner tube (22) close to the limit block (3).
3. The limit locking mechanism of the stretcher trolley according to claim 2, characterized in that: The outer tube (21) is a hollow circular tube with open ends, and a spring is arranged inside the outer tube (21), one end of the spring is connected to the outer tube (21), and the other end is connected to the inner tube (22), and a protruding structure is arranged on the inner tube (22). A limiting hole is provided on the outer tube (21), and the limiting hole is located between the limiting block (3) and the movable hook (4). The inner tube (22) is used to drive the movable hook (4) to move in a direction away from the limiting block (3) until the protruding structure is engaged with the limiting hole. When the limiting shaft (5) abuts against the protruding structure, the spring is used to reset the movable hook (4) under the action of a rebound force, so as to limit the limiting shaft (5) between the limiting block (3) and the movable hook (4).
4. The limit locking mechanism of the stretcher trolley according to claim 2, characterized in that: The movable hook (4) comprises a connecting portion and a bent hook portion which are integrally connected, the connecting portion being sleeved on the inner tube (22), and the bent hook portion being used for abutting against the limiting shaft (5).
5. The limit locking mechanism of the stretcher trolley according to claim 2, characterized in that: The rod structure (2) further comprises a handle (23), wherein the handle (23) is connected to an end of the inner tube (22) away from the movable hook (4), and the handle (23) is used to be sleeved on the outer tube (21).
6. The limit locking mechanism of the stretcher trolley according to claim 1, characterized in that: The end surface of the limit block (3) facing the stretcher vehicle is an arc-shaped surface (31), and the arc-shaped surface (31) is used to guide the limit shaft (5) to move to between the limit block (3) and the movable hook (4).
7. The limit locking mechanism of the stretcher according to claim 1, characterized in that: The fixing seat (1) comprises a base (11) and a bracket (12) which are connected to each other. The base (11) is used to be connected to the compartment of the ambulance by means of bolts. The bracket (12) is provided with a first through hole for the rod structure (2) to pass through. The rod structure (2) is connected to the first through hole.
8. The limit locking mechanism of the stretcher trolley according to claim 1, characterized in that: The limiting shaft (5) comprises a shaft rod (51) and a connecting seat (52) which are connected to each other. A second through hole is provided on the connecting seat (52). The connecting seat (52) is used to be sleeved on the bottom frame (7) of the stretcher through the second through hole.
9. The limit locking mechanism of the stretcher trolley according to claim 1, characterized in that: The invention also comprises a connecting frame (6), wherein the connecting frame (6) is arranged on the rod structure (2), a magnet is arranged on the connecting frame (6), and a Hall magnetic control device (8) for generating magnetic induction with the magnet is arranged on the stretcher. When the Hall magnetic control device (8) generates magnetic induction with the magnet, the lifting height of the stretcher is automatically locked.
10. A stretcher trolley, characterized in that: The invention comprises a limit locking mechanism of a stretcher trolley as claimed in any one of claims 1 to 9.