A fastening device for carriage packaging

Abstract

The present invention discloses a fastening device for carriage packaging, comprising a fixing frame, a main shaft, a secondary shaft, a driving wheel, a driven wheel, a rope, a ratchet mechanism and an anti-overload mechanism. The fixing frame is fixed with a main shaft, which is fixedly connected to the driving wheel. The fixing frame is also connected to a plurality of rotatable secondary shafts, each secondary shaft is provided with a driven wheel, each driven wheel is meshed with the driving wheel, and each secondary shaft is wound with a rope. A ratchet mechanism is also provided between the fixing frame and the main shaft, and each secondary shaft is provided with an anti-overload mechanism engaged with the driven wheel; the anti-overload mechanism comprises a spring and a steel ball, a first groove is provided on the secondary shaft, a second groove is provided on the wheel wall of the driven wheel that is in contact with the secondary shaft, one end of the spring is fixed to the bottom of the first groove, and the other end is connected to the steel ball engaged in the second groove. The advantage of the present invention is that the fastening device only requires one person to complete, and the fastening operation is simple and convenient, which not only reduces manpower consumption and personnel risks, but also improves the fastening efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of fastening devices, in particular to a fastening device for vehicle compartment packaging. Background Art

[0002] Military transport vehicles have a wide range of applications and are used frequently. They are primarily used to transport supplies and personnel to the front lines, as well as weapons, ammunition, military equipment, medicine, and food. For example, Chinese Utility Model Patent Publication No. CN218536504U discloses a quickly retractable military truck tarpaulin for covering the vehicle compartment. Furthermore, in addition to basic transportation functions, military transport vehicles also possess specialized features to adapt to various emergencies, such as camouflage protection, maneuverability, and self-rescue capabilities. Due to the unique requirements of military operations, military transport vehicles generally feature semi-enclosed compartments.

[0003] The "Military Transportation Safety Management Regulations" clearly state that semi-enclosed transport vehicles must have their compartments sealed and reinforced to prevent items inside the vehicle from falling off and affecting transportation safety.

[0004] At present, the packaging reinforcement of semi-enclosed transport vehicles usually wraps the backpack rope around the masts on the left and right sides of the carriage, the top support crossbar and the hook at the bottom of the carriage to form a five-pointed star shape, such as Figure 1 As shown; this method is usually completed by two or more people working together, which requires a lot of manpower, is time-consuming, and has low operating efficiency; and the operator needs to stand on the upper part of the rear compartment panel to complete it, which is dangerous. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to reduce manpower consumption, reduce personnel risks and improve fastening efficiency.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A fastening device for carriage packaging, comprising a fixing frame, a main shaft, a secondary shaft, a driving wheel, a driven wheel, a rope, a ratchet mechanism and an anti-overload mechanism, wherein the main shaft is fixed to the fixing frame, the main shaft is fixedly connected to the driving wheel, a plurality of rotatable secondary shafts are also connected to the fixing frame, each secondary shaft is provided with a driven wheel, each driven wheel is meshed with the driving wheel, a rope is wound around each secondary shaft, a ratchet mechanism is further provided between the fixing frame and the main shaft, causing the main shaft to rotate in one direction, and each secondary shaft is provided with an anti-overload mechanism engaged with the driven wheel.

[0008] The anti-overload mechanism includes a spring and a steel ball. A first groove is provided on the secondary shaft, and a second groove is provided on the wheel wall of the driven wheel that is in contact with the secondary shaft. One end of the spring is fixed to the bottom of the first groove, and the other end is connected to the steel ball clamped in the second groove.

[0009] The fastening device can be completed by only one person, and the fastening operation is simple and convenient, which not only reduces manpower consumption and personnel risks, but also improves the fastening efficiency.

[0010] The anti-overload mechanism prevents the rope from being too tight and breaking, ensuring that each rope can be tightened and can also adapt to the packaging of different carriage sizes.

[0011] Preferably, the ratchet mechanism includes a ratchet and a pawl, the ratchet is fixed on the main shaft, the pawl is arranged on a fixing frame, and one end of the pawl is clamped on the ratchet.

[0012] Preferably, a rocker is connected to the main shaft.

[0013] Preferably, the number of the secondary shafts is 5.

[0014] Preferably, the free end of the rope away from the secondary shaft is further connected with a spring hook.

[0015] Preferably, the ropes on each secondary shaft are wound in the same direction.

[0016] Preferably, the winding direction of the rope is the same as the rotation direction of the ratchet.

[0017] Preferably, the rope is a steel wire rope.

[0018] Preferably, the volume of the steel ball stuck in the second groove does not exceed half of the volume of the steel ball.

[0019] Preferably, the spring is a coil spring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The fastening device can be completed by only one person, and the fastening operation is simple and convenient, which not only reduces manpower consumption and personnel risks, but also improves the fastening efficiency.

[0022] The anti-overload mechanism prevents the rope from being too tight and breaking, ensuring that each rope can be tightened and can also adapt to the packaging of different carriage sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of rope winding in the prior art;

[0024] Figure 2 This is a schematic diagram of the installation of an embodiment of the present invention;

[0025] Figure 3 A front view of an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the installation of the ratchet mechanism and the rocker according to an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the structure of the anti-overload mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] To facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described with reference to the accompanying drawings.

[0029] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise expressly specified or limited.

[0031] See Figures 2 to 5 This embodiment discloses a fastening device for enclosing a carriage, comprising a fixed frame 1, a main shaft 2, a secondary shaft 3, a driving wheel 4, a driven wheel 5, a rope 6, an anti-overload mechanism 7, a ratchet mechanism 9, and a rocker 10. The fixed frame 1 is fixed with the main shaft 2, which is fixedly connected to the driving wheel 4. The fixed frame 1 is also connected to multiple rotatable secondary shafts 3. In this embodiment, there are five secondary shafts 3, evenly distributed along the radial direction of the main shaft 2. Each secondary shaft 3 is provided with a driven wheel 5, each of which engages with the driving wheel 4. A rope 6 is wound around each secondary shaft 3. In this embodiment, the rope 6 is a steel wire rope. The free end of the rope 6, away from the secondary shaft 3, is connected to a spring hook (not shown) for connecting to three rings on a top support rod 8 and two hooks on the bottom of the carriage. A ratchet mechanism 9 is also provided between the fixed frame 1 and the main shaft 2, causing the main shaft 2 to rotate unidirectionally when the rope is retracted. Each secondary shaft 3 is provided with an anti-overload mechanism 7 that cooperates with the driven wheel 5.

[0032] The ratchet mechanism 9 includes a ratchet 91 and a pawl 92. The ratchet 91 is fixed to the main shaft 2, and the pawl 92 is mounted on the fixed frame 1. One end of the pawl 92 is engaged in a groove in the ratchet 91, causing the ratchet 91 to rotate in one direction. Furthermore, the ropes 6 on each secondary shaft 3 are wound in the same direction as the rotation of the ratchet 91. In this embodiment, the ratchet 91 rotates clockwise, ensuring that the ropes 6 rotate in the same direction when the driving wheel 4 rotates, thereby achieving contraction or relaxation of the ropes 6.

[0033] The anti-overload mechanism 7 includes a spring 71 and a steel ball 72. A first groove 31 is provided on the secondary shaft 3, and a second groove 51 is provided on the wheel wall of the driven wheel 5 that is in contact with the secondary shaft 3. One end of the spring 71 is fixed to the bottom of the first groove 31, and the other end is connected to the steel ball 72 clamped in the second groove 51, so that the secondary shaft 3 and the driven wheel 5 are clamped together. In this embodiment, the spring 71 is a coil spring, and the volume of the steel ball 72 clamped in the second groove 51 does not exceed half of the volume of the steel ball 72, ensuring that the steel ball 72 can be screwed out of the second groove 51.

[0034] Furthermore, a rocker 10 is connected to the main shaft 2 to facilitate the rotation of the main shaft 2.

[0035] Specifically, the spring hook on each rope 6 is connected to the three existing rings on the top support rod 8 and the hook at the bottom of the carriage. The rocker 10 is rotated to drive the main shaft 2 to rotate clockwise, thereby driving the driven wheel 5 to rotate counterclockwise through the driving wheel 4. Since the steel ball 72 is trapped in the second groove 31, the driven wheel 5 drives the secondary shaft 3 to rotate on the fixed frame 1, and the rope 6 is wound around the secondary shaft 3 until the rope 6 is tightened. The rocker is stopped, and the pawl 92 is trapped in the groove of the ratchet 91, so that the driving wheel 4 does not reverse, ensuring that the driven wheel 5 does not reverse and the rope 6 does not loosen, thus achieving the sealing and tightening of the semi-enclosed carriage. This tightening process only requires one person to complete, and the tightening operation is simple and convenient, which not only reduces manpower consumption and personnel risks, but also improves tightening efficiency.

[0036] It should also be noted that, in actual operation, the fixing frame 1 cannot always be in the tightening center, resulting in different extension lengths of each rope 6 during tightening, causing some ropes 6 to be tightened while others are not. In this embodiment, when one or more ropes 6 are tightened, while others are not, the rocker is rotated further to drive the secondary shaft 3 to rotate. At this time, the tightened ropes 6 will exert a greater force on the secondary shaft 3. Because the volume of the steel ball 72 embedded in the second groove 51 does not exceed half the volume of the steel ball 72, the spring 71 is compressed and the steel ball 72 retracts into the first groove 31, causing the secondary shaft 3 to disengage from the driven wheel 5. The driven wheel 5 and the secondary shaft 3 are disconnected and rotate relative to each other, thereby preventing the tightened ropes 6 from being tightened further, preventing the ropes 6 from being overtightened and breaking. The untightened ropes 6 are tightened according to the above tightening steps until all ropes 6 are tightened, and the rocker is stopped. This ensures that each rope 6 is tightened and can also accommodate the packaging of different car body sizes.

[0037] When the fastening device needs to be disassembled, the pawl 92 is simply disengaged from the ratchet 91 to achieve the reverse rotation of the driving wheel 2, thereby achieving the reverse rotation of the secondary shaft 3 and loosening the rope 6.

[0038] The working principle of this embodiment is:

[0039] Connect the spring hook on each rope 6 with the three existing rings on the support rod 8 on the top of the car and the hook at the bottom of the car, and rotate the rocker 10 to drive the main shaft 2 to rotate in the clockwise direction, thereby driving the driven wheel 5 to rotate counterclockwise through the driving wheel 4. Since the steel ball 72 is stuck in the second groove 31, the driven wheel 5 drives the secondary shaft 3 to rotate on the fixed frame 1, so that the rope 6 is wound around the secondary shaft 3 until the rope 6 is tightened, and the rotation of the rocker 10 is stopped. The pawl 92 is stuck in the groove of the ratchet 91, so that the driving wheel 4 will not reverse, which ensures that the driven wheel 5 will not reverse, thereby ensuring that the rope 6 will not loosen, and realizing the sealing and tightening of the semi-enclosed car.

[0040] When one or more ropes 6 are tightened, the other ropes 6 are not tightened yet. The rocker 10 is continued to be rotated to drive the secondary shaft 3 to rotate. At this time, the tightened ropes 6 will bring greater force to the secondary shaft 3. Since the volume of the steel ball 72 stuck in the second groove 51 does not exceed half of the volume of the steel ball 72, the spring 71 is compressed and drives the steel ball 72 to retract into the first groove 31, so that the secondary shaft 3 and the driven wheel 5 are disengaged, and the driven wheel 5 is disconnected from the secondary shaft 3 and rotates relative to it, so that the tightened ropes 6 will not be tightened again, preventing the ropes 6 from being too tight and breaking. The untightened ropes 6 continue to be tightened according to the above tightening steps until all ropes 6 are tightened, and the rocker 10 is stopped.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0042] The above-mentioned embodiments merely represent the implementation methods of the invention. The protection scope of the present invention is not limited to the above-mentioned embodiments. For those skilled in the art, several variations and improvements can be made without departing from the concept of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A fastening device for carriage packaging, characterized in that: The invention comprises a fixed frame, a main shaft, a secondary shaft, a driving wheel, a driven wheel, a rope, a ratchet mechanism and an anti-overload mechanism. The main shaft is fixed on the fixed frame, the main shaft is fixedly connected to the driving wheel, and a plurality of rotatable secondary shafts are connected to the fixed frame. Each secondary shaft is provided with a driven wheel, each driven wheel is meshed with the driving wheel, and a rope is wound around each secondary shaft. A ratchet mechanism is further provided between the fixed frame and the main shaft, so that the main shaft rotates in one direction. Each secondary shaft is provided with an anti-overload mechanism engaged with the driven wheel. The anti-overload mechanism includes a spring and a steel ball. A first groove is provided on the secondary shaft, and a second groove is provided on the wheel wall of the driven wheel that contacts the secondary shaft. One end of the spring is fixed to the bottom of the first groove, and the other end is connected to the steel ball clamped in the second groove. The ratchet mechanism includes a ratchet and a pawl, the ratchet is fixed on the main shaft, the pawl is set on the fixed frame, and one end of the pawl is clamped on the ratchet; A rocker is connected to the main shaft; The ropes on each secondary shaft are wound in the same direction; The direction of winding of the rope is the same as the direction of rotation of the ratchet.

2. A fastening device for vehicle compartment sealing according to claim 1, characterized in that: The number of the secondary shafts is 5.

3. The fastening device for vehicle compartment sealing according to claim 1, characterized in that: The free end of the rope away from the secondary shaft is also connected with a spring buckle.

4. The fastening device for vehicle compartment sealing according to claim 1, characterized in that: The rope is a steel wire rope.

5. The fastening device for vehicle compartment sealing according to claim 1, characterized in that: The volume of the steel ball stuck in the second groove does not exceed half of the volume of the steel ball.

6. The fastening device for vehicle compartment sealing according to claim 1, characterized in that: The spring is a coil spring.

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