Military folding extraction type stretcher

Abstract

The utility model discloses a military folding draw-out type stretcher, which relates to the technical field of stretchers and comprises a first connecting plate, a second connecting plate is arranged on the left side of the first connecting plate, and handles are fixedly arranged on the front edge and the rear edge of the right side of the surface of the first connecting plate and the front edge and the rear edge of the left side of the surface of the second connecting plate. Compared with an existing common stretcher, the military folding draw-out type stretcher has the advantages that the transverse draw-out expansion mode is extremely rapid, the use convenience and the unfolding rescue efficiency are greatly improved, the stretcher can be rapidly folded, the size of the stretcher is reduced, the stretcher is convenient to carry or store, and during folding, the stretcher is convenient to carry and store. The stretcher cloth can be effectively collected and stored, the situation that when the stretcher cloth is not used, the stretcher cloth is exposed in a large area and is contaminated with dust is avoided, dust on the stretcher cloth can be scraped off, the situation that the dust generated in use is rolled along with the stretcher cloth is avoided, and the stretcher cloth is convenient to use. And the cleanness of the stretcher cloth is ensured.

Description

Technical Field

[0001] This utility model relates to the field of stretcher technology, specifically a military folding and pull-out stretcher. Background Technology

[0002] In the rescue of some major disasters, roads are often covered by various obstacles, making it difficult for vehicles to pass directly. The injuries of the injured vary, and some are too serious to walk to the rescue point on their own, so they need the help of others and tools. Stretchers are the most convenient and efficient tool for evacuating the injured.

[0003] For example, the public document with application number 202121626094.5 discloses a military stretcher with protective function. This utility model uses the combination of a retractable device and a push-pull device to enable the guardrail to be opened during the lifting process and to be perpendicular to the support plate, thereby preventing the wounded from slipping sideways. The installation and removal of the detachable soft pad can meet the needs of different wounded. However, the stretcher cannot be folded during the march, which will occupy a large storage space and is inconvenient to carry, store and use.

[0004] Furthermore, most existing stretchers are folded in opposite directions or laterally, requiring manual opening and securing. This folding method is inconvenient when unfolding for use or carrying, affecting rescue efficiency. Additionally, the stretcher cloth often becomes excessively long and detaches from the ground when folded, requiring separate removal and storage to prevent dust accumulation and cumbersome storage. Moreover, the stretcher cloth needs to be reinstalled for the next use, which is time-consuming and further impacts efficiency. In military rescue operations, unfolding and assembling stretchers wastes a significant amount of time, rendering them unsuitable for use.

[0005] Therefore, in view of this, we studied and improved the existing structure to propose a military folding and pull-out stretcher. Utility Model Content

[0006] The purpose of this invention is to provide a military folding and retractable stretcher to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a military folding and retractable stretcher, comprising a first connecting plate, a second connecting plate disposed on the left side of the first connecting plate, handles fixedly installed at the front and rear edges of the right side of the surface of the first connecting plate and the front and rear edges of the left side of the surface of the second connecting plate, telescopic mechanisms installed at the front and rear edges of the right side of the second connecting plate, a common winding mechanism disposed at the middle left side of the telescopic mechanism, a cleaning mechanism disposed at the middle right side of the surface of the second connecting plate, and a stretcher cloth fixedly installed at the middle left side of the surface of the first connecting plate.

[0008] Preferably, the telescopic mechanism includes a primary sleeve fixedly installed at both the front and rear edges of the right side of the second surface of the connecting plate, a secondary sleeve slidably disposed inside the primary sleeve, and an extension rod slidably disposed inside the secondary sleeve, the right end of the extension rod being fixed to the first connecting plate.

[0009] Preferably, the telescopic mechanism further includes positioning holes on the lower left surface of both the secondary sleeve and the extension rod, and tension springs are fixedly installed on the lower right side of the outer surface of both the secondary sleeve and the primary sleeve. A locking pin is fixedly installed at the bottom end of the tension spring, and the upper end of the locking pin slides through the primary sleeve and the secondary sleeve.

[0010] Preferably, the winding mechanism includes a shaft cylinder fixedly installed on the left side of the outer surface of the primary sleeve near the middle. The same shaft rod is rotatably installed through the middle of the shaft cylinder. The front and rear ends of the shaft rod are fixedly sleeved with springs inside the shaft cylinder, and the ends of the springs are fixed to the inner surface of the shaft cylinder.

[0011] Preferably, the winding mechanism further includes a winding roller fixedly installed in the middle of the shaft surface, and the winding roller is fixedly connected to the left end of the stretcher cloth.

[0012] Preferably, the cleaning mechanism includes a cavity opened in the middle of the right side of the two surfaces of the connecting plate, and the inner surface of the cavity is provided with a sliding groove on both the front and rear sides, and a slider is slidably arranged on the inner surface of the sliding groove.

[0013] Preferably, the cleaning mechanism further includes the same movable block fixedly installed at one end of the slider, a brush is fixedly provided on the right side of the surface of the movable block, and three thrust springs are evenly distributed and fixedly installed on the left side of the surface of the movable block, with the left end of the thrust springs fixedly connected to the inner surface of the cavity.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the design of a telescopic mechanism, a primary sleeve, a secondary sleeve, an extension rod, a positioning hole, a tension spring, and a locking pin, allows two workers to hold the left and right handles respectively. The worker on the right pulls to the right, causing the extension rod and the secondary sleeve to extend to the right, thus unfolding the entire stretcher. When the secondary sleeve and the extension rod are extended to their maximum position, the tension spring pulls upward to insert the locking pin into the positioning hole of the secondary sleeve and the extension rod, thereby fixing the unfolded position. This lateral pull-out expansion method is extremely fast, greatly improving the convenience and work efficiency during use. At the same time, it is only necessary to stand the stretcher upright and manually pull out the locking pin. Under the action of gravity, the secondary sleeve and the extension rod will fall and retract, completing the folding of the stretcher, reducing the size of the stretcher, and making it easier to carry or store.

[0016] 2. This utility model, through the arrangement of a winding mechanism, a shaft cylinder, a shaft rod, a spring, and a winding roller, allows the stretcher cloth to be pulled when the connecting plate moves as the telescopic mechanism extends and unfolds the stretcher. This pulls the winding roller to rotate to the right, releasing the stretcher cloth for use. When the telescopic mechanism retracts and folds the stretcher, the stretcher cloth becomes excessively long as the telescopic mechanism gradually shortens. At this time, the spring pulls the shaft rod to rotate to the left, causing the winding roller to rotate to the left and automatically winding up the stretcher cloth. This prevents the stretcher cloth from becoming excessively long and falling to the ground when the stretcher is folded up. It can effectively collect and store the stretcher cloth and prevent large areas of the stretcher cloth from being exposed and accumulating dust when not in use. Furthermore, due to the tension of the stretcher cloth by the spring spring through the winding roller, the entire folded stretcher will not unfold arbitrarily.

[0017] 3. This utility model, through the arrangement of a cleaning mechanism, cavity, slide groove, slider, movable block, brush, and thrust spring, ensures that when the stretcher cloth is wound up by the winding mechanism, the elastic force of the thrust spring pushes the movable block and brush to extend and move to the right. The brush then scrapes and cleans the surface of the stretcher cloth, removing dust from the stretcher cloth before it is wound up, preventing dust generated during use from being wound up with the stretcher cloth, thus ensuring the cleanliness of the stored stretcher cloth. Furthermore, as the diameter of the winding roller gradually increases, it pushes the brush and movable block to compress the thrust spring and gradually contract into the cavity, preventing the movable block and brush from remaining in a fixed position and sticking to the stretcher cloth, which could cause the winding mechanism to jam and fail to wind up. This ensures the normal working stability of the winding mechanism. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the telescopic mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the winding mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the cleaning mechanism of this utility model.

[0022] In the diagram: 1. Connecting plate one; 2. Connecting plate two; 3. Handle; 4. Telescopic mechanism; 401. Primary sleeve; 402. Secondary sleeve; 403. Extension rod; 404. Positioning hole; 405. Tension spring; 406. Locking pin; 5. Winding mechanism; 501. Shaft cylinder; 502. Shaft rod; 503. Spring; 504. Winding roller; 6. Cleaning mechanism; 601. Cavity; 602. Slide groove; 603. Slider; 604. Movable block; 605. Brush; 606. Thrust spring; 7. Stretcher cloth. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-4 As shown, a military folding pull-out stretcher includes a connecting plate 1, a connecting plate 2 on the left side of the connecting plate 1, handles 3 fixedly installed on the front and rear edges of the right side of the surface of the connecting plate 1 and the front and rear edges of the left side of the surface of the connecting plate 2, telescopic mechanisms 4 installed on the front and rear edges of the right side of the surface of the connecting plate 2, a common rewinding mechanism 5 provided in the middle of the left side of the telescopic mechanism 4, a cleaning mechanism 6 provided in the middle of the right side of the surface of the connecting plate 2, and a stretcher cloth 7 fixedly installed in the middle of the left side of the surface of the connecting plate 1.

[0025] By adopting the above technical solution, handle 3 makes it easier for staff to apply force to lift the stretcher.

[0026] Furthermore, the telescopic mechanism 4 includes a primary sleeve 401 fixedly installed at the front and rear edges of the right side of the connecting plate 2. A secondary sleeve 402 is slidably arranged inside the primary sleeve 401. An extension rod 403 is slidably arranged inside the secondary sleeve 402. The right end of the extension rod 403 is fixed to the connecting plate 1.

[0027] Limiting grooves are provided on the front and rear sides of the inner surfaces of the primary sleeve 401 and the secondary sleeve 402. Sliding blocks are fixedly installed on the left ends of the front and rear sides of the outer surfaces of the secondary sleeve 402 and the extension rod 403. The sliding blocks are slidably set inside the limiting grooves.

[0028] By adopting the above technical solution, the secondary sleeve 402 can slide and extend from the primary sleeve 401, and the extension rod 403 can slide and extend from the secondary sleeve 402; when the secondary sleeve 402 and the extension rod 403 extend, the sliding block is restricted by the maximum opening position of the limiting groove, thereby preventing the secondary sleeve 402 and the extension rod 403 from excessively extending and falling off.

[0029] Furthermore, the telescopic mechanism 4 also includes positioning holes 404 on the lower left surface of the secondary sleeve 402 and the extension rod 403. Tension springs 405 are fixedly installed on the lower right side of the outer surface of the secondary sleeve 402 and the primary sleeve 401. A locking pin 406 is fixedly installed at the bottom end of the tension spring 405. The upper end of the locking pin 406 slides through the primary sleeve 401 and the secondary sleeve 402.

[0030] By adopting the above technical solution, when the secondary sleeve 402 and the extension rod 403 are extended to their maximum positions, the tension spring 405 will pull the locking pin 406 upwards to insert into the positioning hole 404 of the secondary sleeve 402 and the extension rod 403, thereby fixing the unfolded position; after use, simply stand the stretcher up and manually pull out the locking pin 406. Under the action of gravity, the secondary sleeve 402 and the extension rod 403 will fall and retract, completing the folding of the stretcher.

[0031] Furthermore, the winding mechanism 5 includes a shaft cylinder 501 fixedly installed on the left side of the outer surface of the primary sleeve 401 near the middle. The same shaft rod 502 is rotatably installed through the middle of the shaft cylinder 501. The front and rear ends of the shaft rod 502 are fixedly sleeved with spring springs 503 inside the shaft cylinder 501. The end of the spring spring 503 is fixed to the inner surface of the shaft cylinder 501. The winding mechanism 5 also includes a take-up roller 504 fixedly installed on the middle of the surface of the shaft rod 502. The take-up roller 504 is fixedly connected to the left end of the stretcher cloth 7.

[0032] By adopting the above technical solution, when the telescopic mechanism 4 extends and unfolds the stretcher, the connecting plate 1 moves, which pulls the stretcher cloth 7, thereby pulling the coiling roller 504 to rotate to the right and releasing the stretcher cloth 7 for use; when the telescopic mechanism 4 retracts and folds the stretcher, as the telescopic mechanism 4 gradually shortens, the stretcher cloth 7 becomes excessively long. At this time, the spring 503 pulls the shaft 502 to rotate to the left, thereby causing the coiling roller 504 to rotate to the left and automatically rewind the stretcher cloth 7; and after rewinding, due to the tension of the spring 503, the stretcher cloth 7 will not be pulled out arbitrarily, thus ensuring that the telescopic mechanism 4 will not extend and unfold arbitrarily.

[0033] Furthermore, the cleaning mechanism 6 includes a cavity 601 opened in the middle of the right side of the surface of the connecting plate 2. The inner surface of the cavity 601 is provided with a sliding groove 602 on both the front and rear sides. A slider 603 is slidably arranged on the inner surface of the sliding groove 602. The cleaning mechanism 6 also includes the same movable block 604 fixedly installed on one end opposite to the slider 603. A brush 605 is fixedly arranged on the right side of the surface of the movable block 604. Three thrust springs 606 are evenly distributed and fixedly installed on the left side of the surface of the movable block 604. The left end of the thrust spring 606 is fixedly connected to the inner surface of the cavity 601.

[0034] By adopting the above technical solution, the movable block 604 and the brush 605 will be pushed to extend and move to the right under the elastic force of the thrust spring 606. The brush 605 will stick to the surface of the stretcher cloth 7 to scrape and clean, and can remove the dust on the stretcher cloth 7 before it is rolled up.

[0035] As the stretcher cloth 7 continues to be wound, the diameter of the roller will gradually increase. At this time, the brush 605 and the movable block 604 will push the thrust spring 606 to gradually contract into the cavity 601. This prevents the movable block 604 and the brush 605 from always being in a fixed position and extending to fit the stretcher cloth 7, which would cause the winding mechanism 5 to jam and fail to wind. The slider 603 uses the groove 602 to limit the movable block 604, ensuring the movement stability of the movable block 604.

[0036] Working principle: When using this military folding pull-out stretcher, firstly, two staff members hold the left handle 3 and the right handle 3 respectively. The staff member on the right pulls to the right, which will extend the extension rod 403 and the secondary sleeve 402 to the right, thereby unfolding the entire stretcher. When the telescopic mechanism 4 extends and unfolds the stretcher, the connecting plate 1 moves, which will pull the stretcher cloth 7, thereby pulling the retracting roller 504 to rotate to the right and release the stretcher cloth 7 for use. When the secondary sleeve 402 and the extension rod 403 are extended to the maximum position, the tension spring 405 will pull the locking pin 406 upward to insert into the positioning hole 404 of the secondary sleeve 402 and the extension rod 403, thereby fixing the unfolded position.

[0037] After use, simply stand the stretcher upright and manually pull out the locking pin 406. Under the action of gravity, the secondary sleeve 402 and the extension rod 403 will fall and retract, completing the folding of the stretcher. As the telescopic mechanism 4 gradually shortens, the stretcher cloth 7 will become excessively long. At this time, the spring 503 will pull the shaft 502 to rotate to the left, thereby causing the winding roller 504 to rotate to the left, automatically winding up the stretcher cloth 7. This prevents the stretcher cloth 7 from becoming excessively long and falling off the ground when the stretcher is folded up. It can effectively collect and store the stretcher cloth 7, and also prevent the stretcher cloth 7 from being exposed and accumulating dust when not in use.

[0038] When the stretcher cloth 7 is wound up by the winding mechanism 5, the elastic force of the thrust spring 606 will push the movable block 604 and the brush 605 to extend to the right. The brush 605 will scrape and clean the surface of the stretcher cloth 7, which can remove the dust on the stretcher cloth 7 before it is wound up, and prevent the dust generated during use from being wound up with the stretcher cloth 7, ensuring that the stretcher cloth 7 is stored cleanly. As the stretcher cloth 7 is wound up, the diameter of the roller will gradually increase. At this time, the brush 605 and the movable block 604 will push the thrust spring 606 to gradually shrink into the cavity 601, which will prevent the movable block 604 and the brush 605 from always being in a fixed position and extending to stick to the stretcher cloth 7, causing the winding mechanism 5 to jam and be unable to wind up.

[0039] After the stretcher cloth 7 is fully rolled up, the tension of the spring 503 prevents the stretcher cloth 7 from being pulled out at will, thus ensuring that the telescopic mechanism 4 does not extend or unfold at will. This is the working principle of the military folding pull-out stretcher.

Claims

1. A military folding and retractable stretcher, comprising a connecting plate (1), characterized in that, A connecting plate 2 (2) is provided on the left side of the connecting plate 1 (1). A handle (3) is fixedly installed on the front and rear edges of the right side of the surface of the connecting plate 1 (1) and the front and rear edges of the left side of the surface of the connecting plate 2 (2). A telescopic mechanism (4) is installed on the front and rear edges of the right side of the surface of the connecting plate 2 (2). A winding mechanism (5) is provided in the middle of the left side of the telescopic mechanism (4). A cleaning mechanism (6) is provided in the middle of the right side of the surface of the connecting plate 2 (2). A stretcher cloth (7) is fixedly installed in the middle of the left side of the surface of the connecting plate 1 (1).

2. The military folding and pull-out stretcher according to claim 1, characterized in that, The telescopic mechanism (4) includes a first-level sleeve (401) fixedly installed on the front and rear edges of the right side of the surface of the second connecting plate (2). A second-level sleeve (402) is slidably arranged inside the first-level sleeve (401). An extension rod (403) is slidably arranged inside the second-level sleeve (402). The right end of the extension rod (403) is fixed to the first connecting plate (1).

3. A military folding and pull-out stretcher according to claim 1, characterized in that, The telescopic mechanism (4) also includes positioning holes (404) on the lower left side surface of the secondary sleeve (402) and the extension rod (403). A tension spring (405) is fixedly installed on the lower right side of the outer surface of the secondary sleeve (402) and the primary sleeve (401). A locking pin (406) is fixedly installed at the bottom end of the tension spring (405). The upper end of the locking pin (406) slides through the primary sleeve (401) and the secondary sleeve (402).

4. A military folding and pull-out stretcher according to claim 1, characterized in that, The winding mechanism (5) includes a shaft cylinder (501) fixedly installed on the left side of the outer surface of the primary sleeve (401) near the middle. The same shaft rod (502) is rotatably installed through the middle of the shaft cylinder (501). The front and rear ends of the shaft rod (502) are fixedly sleeved with spring springs (503) inside the shaft cylinder (501). The end of the spring spring (503) is fixed to the inner surface of the shaft cylinder (501).

5. A military folding and retractable stretcher according to claim 1, characterized in that, The winding mechanism (5) also includes a winding roller (504) fixedly installed in the middle of the surface of the shaft (502), and the winding roller (504) is fixedly connected to the left end of the stretcher cloth (7).

6. A military folding and pull-out stretcher according to claim 1, characterized in that, The cleaning mechanism (6) includes a cavity (601) opened in the middle of the right side of the surface of the connecting plate (2). The inner surface of the cavity (601) is provided with a sliding groove (602) on both the front and rear sides. A slider (603) is slidably arranged on the inner surface of the sliding groove (602).

7. A military folding and retractable stretcher according to claim 1, characterized in that, The cleaning mechanism (6) also includes a movable block (604) fixedly installed at one end of the slider (603). A brush (605) is fixedly installed on the right side of the surface of the movable block (604). Three thrust springs (606) are evenly distributed and fixedly installed on the left side of the surface of the movable block (604). The left end of the thrust spring (606) is fixedly connected to the inner surface of the cavity (601).

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