A quick mounting and separating structure for an electrically driven trolley stretcher

Abstract

A kind of electric drive cart is with stretcher quick installation separation structure, it is related to electric vehicle technical field, including support rod, stretcher combination separation mechanism, telescopic pipe quick connector, the both sides of support rod are respectively provided stretcher combination separation mechanism for and the stretcher support rod connection, the both ends of support rod are respectively provided telescopic pipe quick connector for and the telescopic pipe connection of electric drive cart;Stretcher combination separation mechanism includes cover plate, first base, limit plate and locking plate rotatably arranged between cover plate and first base;Telescopic pipe quick connector includes quick pressing plate, second base, one side of quick pressing plate is connected with second base by pivot, other side is detachably connected with second base.The structure can realize stretcher and electric drive cart quickly combine and separate, effectively improve rescue speed, also can be adjusted according to stretcher installation width, effectively completely unfold stretcher support, effectively solve the problem of stretcher collapse caused by not firm, vehicle jolt in the process of wounded transport, can better protect the wounded.

Description

Technical Field

[0001] This utility model belongs to the field of electric vehicle technology and mainly relates to a quick installation and separation structure for an electric drive trolley stretcher. Background Technology

[0002] With technological advancements, multi-purpose electric trolleys have emerged in China. These trolleys can move across remote and undeveloped terrains, such as hills, rocks, and other dangerous landforms, and are widely used in military, law enforcement, firefighting, and rescue missions. However, during casualty rescue, it is necessary to quickly secure or detach the stretcher carrying the injured from the electric trolley to expedite the rescue. Currently, the primary method for securing the stretcher to the electric trolley is a binding structure, which involves directly tying the stretcher to the trolley with ropes. This method has drawbacks such as long binding time, unreliable fixation, and the stretcher's susceptibility to deformation and collapse during transport. Summary of the Invention

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a quick installation and separation structure for an electric trolley stretcher.

[0004] The purpose of this utility model is achieved through the following technical solution. According to this utility model, a quick-installation and separation structure for a stretcher on an electric trolley includes a support rod, a stretcher connection and separation mechanism, and a telescopic quick-connect coupling. The support rod has a stretcher connection and separation mechanism on each side for connection to the stretcher support rod, and telescopic quick-connect couplings at both ends for connection to the telescopic tube of the electric trolley. The stretcher connection and separation mechanism includes a cover plate, a first base, a limiting plate and a locking plate rotatably disposed between the cover plate and the first base, and a stretcher positioning hole on one of the cover plate and the first base. The support rod is connected to the first base on both sides. A limiting tooth protrudes from the side of the limiting plate near the locking plate, and a locking tooth is provided on the side of the locking plate near the limiting plate. The lower side of the locking tooth is positioned to connect with the stretcher support rod when it is not inserted into the stretcher positioning hole. The locking plate has a second tooth groove for engaging the limiting tooth, and a third stretcher positioning hole on the upper side. The locking plate, which surrounds the third stretcher positioning hole from the lower side, is formed as a pressure part that prioritizes contacting the stretcher support rod when it is inserted into the stretcher positioning hole, thereby driving the locking plate to rotate and disengaging the limiting tooth from the second tooth groove. The locking plate, which surrounds the third stretcher positioning hole from the upper side, is formed as a locking part for limiting the stretcher support rod after it is inserted into the stretcher positioning hole. The upper side of the locking tooth is provided with a first tooth groove for engaging with the limiting tooth after the stretcher support rod is limited by the locking part. A spring is provided between the locking plate and the limiting plate to tend to keep the limiting tooth engaged with the first or second tooth groove. A handle is provided on the lower side of the locking plate for driving the locking plate to rotate and disengaging the limiting tooth from the first tooth groove.

[0005] Furthermore, the support rod includes a horizontal tube with a slotted hole corresponding to the mounting through hole on the first base.

[0006] Furthermore, the support rod also includes vertical tubes connected to both ends of the horizontal tube, and both ends of the horizontal tube are provided with circular holes coaxial with the corresponding vertical tubes.

[0007] Furthermore, the two ends of the elastic element are respectively connected to the first spring mounting hole on the limiting plate and the second spring mounting hole on the locking plate.

[0008] Furthermore, the cover plate is provided with two first mounting holes, the limiting plate is provided with a second mounting hole, the locking plate is provided with a third mounting hole, and the first base is provided with two stepped bolt threaded holes. A stepped bolt is passed through the first mounting hole and the second mounting hole in sequence and then screwed into the corresponding stepped bolt threaded hole. Another bolt is passed through the other first mounting hole and the other second mounting hole in sequence and then screwed into the other corresponding stepped bolt threaded hole, so as to rotate the limiting plate and the locking plate between the cover plate and the first base.

[0009] Furthermore, the first base is also provided with two limiting screws. One limiting screw is used to form a stop engagement with the outer side of the limiting plate away from the locking plate, and the other limiting screw is used to form a stop engagement with the outer side of the locking plate away from the limiting plate.

[0010] Furthermore, the telescopic quick connector includes a second base and a quick-pressing plate. One side of the quick-pressing plate is connected to the second base via a pivot, and the other side is detachably connected to the second base. Both ends of the support rod are connected to the second base respectively.

[0011] Furthermore, a U-shaped opening is provided on the other side of the quick-pressing plate. The lower end of the screw extending vertically passes through the U-shaped opening and is set on the second base through the connecting shaft. A second nut is screwed onto the screw located above the U-shaped opening.

[0012] Furthermore, the second nut is provided with two symmetrically distributed force-applying handles.

[0013] Based on the foregoing technical solution, this utility model has the following beneficial effects: (1) The structure has a quick installation and separation function, which can effectively solve the problem of slow installation and separation speed of stretcher and electric trolley. At the same time, the quick installation and separation structure of stretcher has a good stretcher locking function, which can effectively solve the problem of unreliable binding and fixing. In addition, the structure can adjust the installation width according to the stretcher, effectively fully unfold and support the stretcher, effectively solve the problem of stretcher collapse caused by vehicle bumps during the transfer of the wounded, and can better protect the wounded.

[0014] (2) The structure can quickly combine and separate the stretcher and the electric trolley, effectively improving the rescue speed. At the same time, the structure is safe and reliable, avoiding the problem of stretcher displacement during transportation. In addition, the one-hole design on the structure can adjust the installation size according to the width of the stretcher, making it suitable for stretchers of different specifications.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a stretcher mounted on an electric trolley using the quick-installation and separation structure proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the support rod in the quick installation and separation structure of an electric drive trolley stretcher according to this utility model.

[0018] Figure 3 yes Figure 2 A schematic diagram of the structure of the central horizontal tube.

[0019] Figure 4 This is a schematic diagram of the stretcher assembly and separation mechanism in a quick assembly and separation structure for an electric-driven trolley according to this utility model.

[0020] Figure 5 yes Figure 4 A schematic diagram of the structure of the middle cover plate.

[0021] Figure 6 yes Figure 4 A schematic diagram of the structure of the first base.

[0022] Figure 7 This is a schematic diagram showing the connection between the limiting plate and the locking plate when the stretcher is not installed.

[0023] Figure 8 This is a schematic diagram showing the connection between the limiting plate and the locking plate when the stretcher support rod is placed into the stretcher positioning hole but is not limited by the locking part.

[0024] Figure 9 This is a schematic diagram showing the connection between the limiting plate and the locking plate after the stretcher support rod is limited by the locking part.

[0025] Figure 10 This is a schematic diagram of the telescopic quick connector in the quick installation and separation structure of the stretcher for an electric drive trolley according to the present invention.

[0026] Reference numerals: 1. Support rod; 101. Horizontal tube; 10101. Slotted hole; 10102. Round hole; 102. Vertical tube; 2. Stretcher assembly / disassembly mechanism; 201. Cover plate; 20101. First mounting hole; 20102. First stretcher positioning hole; 202. Spring; 203. Limiting plate; 20301. Handle; 20302. First spring mounting hole; 20303. Second mounting hole; 20304. Limiting tooth; 204. First base; 20401. Mounting through hole; 20402. Limiting screw threaded hole; 20403. Step bolt threaded hole; 20404. Second stretcher positioning hole, 205, locking plate, 20501, locking tooth, 20502, second spring mounting hole, 20503, third stretcher positioning hole, 20504, third mounting hole, 20505, first tooth groove, 20506, second tooth groove, 20507, locking part, 20508, pressure-bearing part, 20509, pressure-bearing end, 206, limit screw, 3, telescopic tube quick connector, 301, second base, 30101, fourth mounting hole, 302, quick pressure plate, 303, second nut, 3031, force application handle, 304, screw, 4, stretcher, 5, electric trolley. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings: Please see Figure 1-10 This utility model discloses a quick-installation and separation structure for a stretcher on an electric trolley, comprising two support rods 1 symmetrically distributed along the length of the electric trolley 5, a stretcher connection and separation mechanism 2, and a telescopic quick-connector 3. The support rods 1 are respectively provided with the stretcher connection and separation mechanism 2 on both sides for detachable connection to the stretcher support rod on the stretcher 4, and the support rods 1 are respectively provided with the telescopic quick-connector 3 on both ends for detachable connection to the telescopic tube of the electric trolley 5; please refer to [link to relevant documentation]. Figure 2 The support rod 1 includes a horizontal tube 101 and vertical tubes 102 fixed to both ends of the horizontal tube 101. A circular hole 10102 is provided at each end of the horizontal tube 101. In this embodiment, the vertical tubes 102 are welded to both ends of the horizontal tube 101, and during welding, the center of the circular hole 10102 is located on the axis of the vertical tube 102. Figure 3As shown, four straight holes 10101 are symmetrically arranged on both sides of the horizontal tube 101. Two straight holes 10101 on the same side are corresponding to the mounting through holes 20401 on the stretcher combination and separation mechanism 2. During installation, the mounting through holes 20401 on each stretcher combination and separation mechanism 2 are aligned with the corresponding straight holes 10101 on the horizontal tube 101 and then connected by bolts and nuts. When it is necessary to adjust the relative distance between the two stretcher combination and separation mechanisms 2 on the support rod 1, the structural design of the straight holes allows the stretcher combination and separation mechanism 2 to move in the length direction of the straight hole 10101 after the nuts are loosened. When the appropriate relative distance is adjusted, the nuts are tightened again to fix the stretcher combination and separation mechanism 2, thereby adapting to stretchers of different widths.

[0028] Please see Figure 1 and Figure 4 The stretcher assembly / disassembly mechanism 2 includes a cover plate 201, a first base 204, a limiting screw 206, a limiting plate 203 rotatably disposed between the cover plate 201 and the first base 204, and a locking plate 205, as shown below. Figure 5 As shown, the cover plate 201 is provided with two first mounting holes 20101 and one first stretcher positioning hole 20102. The first stretcher positioning hole 20102 is used to place the stretcher support rod; as Figure 7 As shown, the lower side of the limiting plate 203 is provided with a first spring mounting hole 20302, and the upper side is provided with a second mounting hole 20303; the locking plate 205 is provided with a third mounting hole 20504; as Figure 6As shown, the first base 204 has two stepped bolt threaded holes 20403. A bolt is passed through a first mounting hole 20101 and a second mounting hole 20303 in sequence and then screwed into a corresponding stepped bolt threaded hole 20403 to rotatably position the limiting plate 204 between the cover plate 201 and the first base 204. Another bolt is passed through a first mounting hole 20101 and a third mounting hole 20504 in sequence and then screwed into a corresponding stepped bolt threaded hole 20403 to rotatably position the locking plate 205 between the cover plate 201 and the first base 204. The first base has a second stretcher positioning hole 20404. Furthermore, mounting through holes 204 are respectively provided on the left and right sides of the first base. 01. After aligning the mounting through hole 20401 and the corresponding slotted hole 10101, bolts are used for connection, which enables the detachable installation of the stretcher-separation mechanism 2 on the support rod 1. Furthermore, the first base 204 is provided with two limiting screws 206. One limiting screw is used to form a stop engagement with the outer side of the limiting plate away from the locking plate to limit the maximum rotation range of the limiting plate. The other limiting screw is used to form a stop engagement with the outer side of the locking plate away from the limiting plate to limit the maximum rotation range of the limiting plate. Under normal circumstances, the limiting plate, the locking plate and the corresponding limiting screws do not contact each other. In this embodiment, the two limiting screws 206 are installed in the corresponding two limiting screw thread holes 20402 on the first base 204.

[0029] Please see Figure 7 The locking plate 205 has a locking tooth 20501 on the side near the limiting plate 203. The upper part of the locking tooth 20501 has a first tooth groove 20505 and the lower part has a second tooth groove 20506. The limiting plate 203 has a protruding limiting tooth 20304 on the side near the locking plate 205 for meshing with the first tooth groove 20505 and the second tooth groove 20506. Furthermore, the lower side of the limiting plate 203 has a first spring mounting hole 20302 for mounting the spring 202, and the lower side of the locking plate 205 has a second spring mounting hole 20502 for mounting the spring 202. In the initial state... (At this time, the stretcher is not mounted on the electric trailer.) The limiting teeth 20304 on the limiting plate 203 are located in the second tooth groove 20506, and the spring 202 is in a natural state without force. The upper side of the locking plate 205 is provided with a third stretcher positioning hole 20503. The locking plate that surrounds the third stretcher positioning hole 20503 from the upper side forms a locking part 20507, and the locking plate that surrounds the third stretcher positioning hole from the lower side forms a pressure part 20508. In the initial state, the pressure end 20509 of the pressure part near the locking plate is higher than the first stretcher positioning hole 20102 and the second stretcher positioning hole 20404. Please refer to Figure 8When stretcher 4 is placed onto stretcher separation and connection mechanism 2, the stretcher support rod is first inserted into the first stretcher positioning hole, the second stretcher positioning hole, and the third stretcher positioning hole 20503, and preferentially contacts the pressure-bearing part near the pressure end 20509 of the locking plate. After pressing the stretcher support rod downward to subject the pressure-bearing part to downward pressure, the locking plate 205 rotates counterclockwise to bring the bottom of the first stretcher positioning hole, the bottom of the second stretcher positioning hole, and the pressure-bearing part to the same horizontal position. At this time, the spring 202 is stretched. During this process, the limiting tooth 20304 on the limiting plate 203 disengages from the second tooth groove 20506 until the top of the limiting tooth 20304 abuts against the top of the locking tooth 20501. The spring is stretched to its maximum length. At this time, the locking part is located above the stretcher support rod and there is a certain gap between the two. Please refer to Figure 9 Then, press down on the locking part 20507. Under the elastic force provided by the spring, the limiting tooth 20304 slides into the first tooth groove 20505 and automatically locks. At this time, the stretcher support rod is pressed into the first stretcher positioning hole 20102 and the second stretcher positioning hole 20404 and locked. After locking, the spring 202 is still in a stretched state. With the elastic force provided by the spring, the stretcher support rod maintains the aforementioned locked state. When it is necessary to remove the stretcher 4, the lower side of the limiting plate 203 is provided with a handle 20301. Pulling the handle 20301 makes the limiting plate 203 rotate clockwise. The lower side of the locking plate 205 also rotates clockwise under the tension of the spring 202. The locking part 20507 also rotates clockwise (to move away from above the stretcher support rod). At this time, since the stretcher 4 has not been removed from the positioning hole, the limiting tooth has not fully entered the second tooth groove 20505 (the spring is still in a stretched state). When the stretcher 4 is removed from the positioning hole, the limiting tooth 20304 fully enters the second tooth groove 20505 under the elastic force of the spring. At this time, the spring 202 returns to the initial state, thus completing the locking and separation of the stretcher 4. In the whole process, there is also a limiting screw 206 to prevent the limiting plate 203 and the locking plate 205 from rotating too much clockwise and counterclockwise during the locking and separation of the stretcher 4.

[0030] Please see Figure 1 and Figure 10 The telescopic tube quick-connect interface 3 includes a second base 301 and a quick-pressing plate 302. The quick-pressing plate 302 is designed with an arc structure, which is adapted to the telescopic tube on the electric drive trolley 5. One side of the quick-pressing plate 302 is riveted to the second base 301 by a pivot, and the other side of the quick-pressing plate 302 is detachably connected to the second base 301.

[0031] When the telescopic quick connector 3 is installed on the support rod 1, the second base 301 has a fourth mounting hole 30101 corresponding to the axis of the vertical tube 102 on the support rod 1 and the center of the circular hole 10102. During installation, it can be connected to the support rod 1 by bolts and nuts. A receiving groove for mounting bolt heads is also reserved above the fourth mounting hole 30101, allowing the telescopic rod to be quickly and accurately placed between the quick-pressing plate 302 and the second base 301, facilitating subsequent operations. The other side of the quick-pressing plate 302 is connected to the second base 301 by a second nut 303 and a screw 304. Specifically, a horizontal plate extends from the other side of the quick-pressing plate 302, and a U-shaped opening is formed on the horizontal plate, extending vertically. After the lower end of screw 304 passes through the U-shaped opening, it is placed on the second base 301 via the connecting shaft. A second nut 303 is screwed onto screw 304 located above the U-shaped opening, and two symmetrically distributed force-applying handles are provided on the second nut 303. When the telescopic rod is fixed to the telescopic rod quick connector, the second nut 303 is rotated in the forward direction and moves downward in the vertical direction, thereby pressing the quick-pressing plate 302, that is, fixing the telescopic tube quick connector 3 to the telescopic rod of the electric drive trolley 5. When it is necessary to detach the telescopic rod from the telescopic tube quick connector, the force-applying handle is rotated in the reverse direction until the second nut 303 is rotated out of screw 304. After flipping the quick-pressing plate 302, the telescopic rod can be removed to complete the detachment of the telescopic tube quick connector 3 from the telescopic rod of the electric drive trolley 5.

[0032] In other embodiments of this utility model, buckles are provided on the outer walls of both sides of the second base 301 and corresponding slots are provided inside the vertical tube 102 to replace the bolts and nuts used for connecting the second base 301 and the support rod 1 in this embodiment.

[0033] In other embodiments of this utility model, the connecting shaft is no longer provided inside the second base 301, and the top of the screw can be directly screwed into the second base.

[0034] In other embodiments of this utility model, the outer wall of the second nut 303 may not be provided with a force-applying handle, and the second nut 303 may be tightened or loosened by hand or with a wrench.

[0035] In other embodiments of this utility model, the number of mounting through holes 20401 on the first base 204 and the corresponding straight holes 10101 on the support rod 1 can be set as needed. For example, a mounting through hole 20401 is provided at the lower part of the first base 204, and a straight hole 10101 is provided on the corresponding side of the support rod.

[0036] In other embodiments of this utility model, the first base 204 no longer has a threaded hole 20402 for the limiting screw and a limiting screw 206, and a protrusion can be provided in the corresponding position instead.

[0037] In other embodiments of this utility model, the second base 301 is connected to the other side of the quick-pressing plate 302 by other detachable structures, such as a buckle structure composed of a buckle and a slot.

[0038] In other embodiments of this utility model, the vertical tube 102 is no longer welded to the support rod 1, and a connecting tube extending vertically and penetrating through the fourth mounting hole is provided below the second base, so that the support rod and the second base are connected by the connecting tube.

[0039] In other embodiments of this utility model, the first stretcher positioning hole can be provided only on the cover plate, and the second stretcher positioning hole on the first base can be omitted. In this case, the height of the first base should be lower than the first stretcher positioning hole and the third stretcher positioning hole; or the second stretcher positioning hole can be provided only on the first base, and the first stretcher positioning hole on the cover plate can be omitted. In this case, the height of the cover plate should be lower than the first stretcher positioning hole and the third stretcher positioning hole.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the design and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A quick-assembly and separation structure for an electrically driven trolley stretcher, characterized in that: The support rod includes a support rod (1), a stretcher connection and separation mechanism (2), and a telescopic quick connector (3). The support rod is provided with a stretcher connection and separation mechanism on both sides for connecting with the stretcher support rod. The support rod is provided with a telescopic quick connector at both ends for connecting with the telescopic tube of the electric trailer (5). The stretcher connection and separation mechanism (2) includes a cover plate (201), a first base (204), a limiting plate (203) and a locking plate (205) rotatably disposed between the cover plate and the first base. A stretcher positioning hole is provided on one of the cover plate and the first base. The support rod is connected to the first base on both sides. A limiting tooth (20304) is protruding on the side of the limiting plate near the locking plate. A locking tooth (20501) is provided on the side of the locking plate near the limiting plate. The lower side of the locking tooth is provided with a second tooth groove (20501) for meshing with the limiting tooth when the stretcher support rod is not placed in the stretcher positioning hole. 506), The upper side of the locking plate is provided with a third stretcher positioning hole (20503), the locking plate forming the third stretcher positioning hole from the lower side is formed to preferentially contact the stretcher support rod when the stretcher support rod is put into the stretcher positioning hole to drive the locking plate to rotate and disengage the limiting tooth from the second tooth groove (20508), the locking plate forming the third stretcher positioning hole from the upper side is formed to limit the stretcher support rod after it is put into the stretcher positioning hole (20507), the upper side of the locking tooth is provided with a first tooth groove (20505) for meshing with the limiting tooth after the stretcher support rod is limited by the locking part, a spring (202) is provided between the locking plate and the limiting plate to tend to keep the limiting tooth and the first tooth groove or the second tooth groove in a meshing state, and a handle (20301) is provided on the lower side of the limiting plate for driving the limiting plate to rotate so that the limiting tooth disengages from the first tooth groove.

2. The quick-installation and separation structure for an electric-driven trolley stretcher according to claim 1, characterized in that: The support rod (1) includes a horizontal tube (101), and the horizontal tube (101) is provided with a slotted hole (10101) corresponding to the mounting through hole (20401) on the first base (204).

3. The quick installation and separation structure for an electric trolley stretcher according to claim 2, characterized in that: The support rod also includes a vertical tube (102) connected to both ends of the horizontal tube, and both ends of the horizontal tube are provided with circular holes (10102) coaxial with the corresponding vertical tubes.

4. The quick installation and separation structure for an electric trolley stretcher according to claim 1, characterized in that: The two ends of the spring (202) are respectively connected to the first spring mounting hole (20302) on the limiting plate (203) and the second spring mounting hole (20502) on the locking plate (205).

5. The quick installation and separation structure for an electric trolley stretcher according to claim 1, characterized in that: The cover plate (201) is provided with two first mounting holes (20101), the limit plate (203) is provided with a second mounting hole (20303), the locking plate (205) is provided with a third mounting hole (20504), and the first base (204) is provided with two stepped bolt threaded holes (20403). A stepped bolt is passed through the first mounting hole (20101) and the second mounting hole (20303) in sequence and then screwed into the corresponding stepped bolt threaded hole (20403). Another stepped bolt is passed through the other first mounting hole (20101) and the third mounting hole (20504) in sequence and then screwed into the other corresponding stepped bolt threaded hole (20403).

6. The quick installation and separation structure for an electric trolley stretcher according to claim 1, characterized in that: The first base (204) is also provided with two limiting screws (206). One limiting screw is used to form a stop engagement with the outer side of the limiting plate away from the locking plate, and the other limiting screw is used to form a stop engagement with the outer side of the locking plate away from the limiting plate.

7. The quick-installation and separation structure for an electric-driven trolley stretcher according to claim 1, characterized in that: The telescopic quick connector (3) includes a second base (301) and a quick-press plate (302). One side of the quick-press plate (302) is connected to the second base (301) via a pivot, and the other side is detachably connected to the second base (301). The two ends of the support rod (1) are respectively connected to the second base (301).

8. The quick-installation and separation structure for an electric-driven trolley stretcher according to claim 7, characterized in that: The other side of the quick-press plate (302) is provided with a U-shaped opening. The lower end of the screw (304) extending in the vertical direction passes through the U-shaped opening and is set on the second base (301) through the connecting shaft. The screw (304) located above the U-shaped opening is screwed with a second nut (303).

9. The quick-installation and separation structure for an electric-driven trolley stretcher according to claim 8, characterized in that: The second nut (303) has two symmetrically distributed force-applying handles (3031).

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