Air cargo container plate pallet truck with automatic limiting function

Abstract

The utility model discloses an air cargo pallet truck with an automatic limiting function, which comprises a pallet truck body, a plurality of lifting grooves are arranged on the surface of the pallet truck body, contraction grooves are arranged at the bottoms of the lifting grooves, first telescopic springs are fixedly connected to two sides inside the contraction grooves, and a linkage frame is arranged at the bottom of the pallet truck body. The two sides of the bottom of the pallet truck body are provided with traction wheels, one side of each traction wheel is provided with a transmission mechanism, one side of each transmission mechanism is provided with an automatic lifting mechanism, one end of the pallet truck body is rotationally provided with a traction frame, and a brake mechanism is arranged between the traction frame and the traction wheels. An adjusting groove is formed in one side of the lifting groove, and a locking mechanism is arranged in the adjusting groove. The plate trailer has the advantages that through mutual matching of the transmission mechanism and the automatic lifting mechanism, the linkage frame can be started when the two traction wheels at the bottom of the plate trailer rotate, and the linkage frame pushes all the limiting baffles to achieve automatic lifting through the elastic force of the first telescopic spring.

Description

Technical Field

[0001] This utility model relates to the field of aviation pallet truck technology, specifically to an aviation cargo container pallet truck with automatic limiting function. Background Technology

[0002] Existing air cargo pallet trucks play a vital role in the freight transportation sector, primarily used for the rapid and safe movement of various baggage, goods, and equipment within airports. To ensure the stability of goods during transport and prevent slippage or displacement due to the inertia of vehicle movement, traditional designs typically incorporate edge restraints on the pallet truck's edges. These restraints are designed to provide a physical barrier for items placed on the flatbed truck, reducing the risk of accidental slippage.

[0003] However, existing limit barriers have significant drawbacks in practical use. Specifically, these limit barriers require manual erection. During cargo loading, staff need to spend extra time and effort to erect the limit barriers after loading is complete. In busy airport environments, staff may fail to adjust the limit barriers to the correct position in time due to cumbersome procedures or negligence. Especially after loading, if the limit barriers are not erected, the pallet truck cannot effectively restrain the cargo during transportation. When the vehicle accelerates, decelerates, turns, or encounters bumps on uneven roads, the cargo can easily lose balance, leading to serious accidents such as slippage.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes an air cargo container pallet truck with automatic limiting function to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An air cargo pallet truck with automatic limit function includes a pallet truck body. The surface of the pallet truck body has multiple lifting slots, and the bottom of each lifting slot has a contraction slot. A telescopic spring is fixedly connected to both sides of the inside of the contraction slot. A linkage frame is provided at the bottom of the pallet truck body, and the linkage frame is fixedly connected to the telescopic spring. Limiting baffles are slidably installed inside the lifting slots. Traction wheels are installed on both sides of the bottom of the pallet truck body. A transmission mechanism is provided on one side of the traction wheel, and an automatic lifting mechanism is provided on the other side of the transmission mechanism. A traction frame is rotatably installed at one end of the pallet truck body, and a braking mechanism is provided between the traction frame and the traction wheel. An adjustment slot is provided on one side of the lifting slot, and a locking mechanism is provided inside the adjustment slot.

[0008] Furthermore, in order to provide power for the automatic pop-up of each limit baffle when the traction wheel rotates, the transmission mechanism includes a driven rod rotatably mounted on one side of the traction wheel surface, positioning frames fixedly connected to both sides of the bottom surface of the pallet truck body, a telescopic rod slidably mounted at the end of the positioning frame, one end of the driven rod rotatably connected to the telescopic rod, and a push block fixedly connected to the end of the telescopic rod, with one side of the push block cooperating with the support rod.

[0009] Furthermore, in order to suspend and support the lowered linkage frame, the automatic lifting mechanism includes support rods fixedly connected to both sides of the bottom surface of the linkage frame. A suspension groove is opened on one side of the surface of the support rod, and a limit column is fixedly connected inside the suspension groove.

[0010] Furthermore, in order to facilitate the release of the linkage frame from suspension via the transmission mechanism, positioning plates are fixedly connected to both sides of the bottom surface of the pallet truck body. Limiting rods are slidably installed on the surface of the positioning plates, and suspension rings are fixedly connected to the ends of the limiting rods. A return spring is fixedly connected between the suspension rings and the positioning plates.

[0011] Furthermore, in order to realize the automatic braking function of the pallet truck body when it is not towed, the braking mechanism includes a transmission column slidably installed on both sides of the bottom surface of the pallet truck body, a compression block fixedly connected to both sides of the surface of the towing frame, a rotating shaft rotatably installed at one bottom end of the pallet truck body, a brake plate fixedly connected to both sides of the surface of the rotating shaft, and the transmission column and the rotating shaft rotatably connected.

[0012] Furthermore, in order to enable the transmission column to automatically reset when not under pressure, a baffle plate is fixedly connected to one side of the transmission column surface, and a telescopic spring is fixedly connected to one end of the baffle plate. The end of the telescopic spring is fixedly connected to the pallet truck body.

[0013] Furthermore, in order to lock the raised limit baffle, the locking mechanism includes a telescopic spring three fixedly connected in the adjustment groove, a limit block fixedly connected to the end of the telescopic spring three, a locking groove on one side of the limit baffle, and one end of the limit block cooperating with the locking groove.

[0014] Furthermore, in order to facilitate the release of the locking of the limit baffle, a pressing rod is slidably installed on the top of the adjusting groove, and a lifting inclined block is fixedly connected to the end of the pressing rod. A pressure inclined block is fixedly connected to one side of the limit block, and the inclined surfaces of the lifting inclined block and the pressure inclined block cooperate with each other.

[0015] Furthermore, in order to facilitate the downward movement of the linkage frame and its suspension, transmission grooves are opened on both sides of the bottom surface of the pallet truck body. A lifting lever is rotatably installed inside the transmission groove. One end of the lifting lever is fixedly connected to an arc plate, and the arc plate slides in contact with the linkage frame.

[0016] Furthermore, in order to enable the pallet truck body to steer when being towed, steering wheels are rotatably installed on both sides of the bottom of the pallet truck body.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. Through the cooperation of the transmission mechanism and the lifting mechanism, when the limit baffles are retracted into the lifting slots, the linkage frame is suspended at the bottom of the pallet truck body. When the pallet truck is towed, the rotation of the traction wheels on both sides of the bottom can quickly activate the linkage frame, causing the linkage frame to automatically lift each limit baffle through the elastic force of the telescopic spring. This ensures that the limit baffles are automatically raised after each loading of goods without manual intervention. This fundamentally avoids situations where operators forget to raise the limit baffles due to negligence or busyness, greatly improving the stability and safety of goods during transportation and effectively preventing accidents such as goods slipping.

[0019] 2. Through the locking mechanism, the limit baffles can be automatically locked when they are raised. After being locked, the limit baffles will not fall even after the linkage frame moves down. After each limit baffle is raised, the limit baffles that need to be lowered and retracted can be freely selected by pushing the squeezing rod. This ensures that when the pallet truck is loaded, the raising and limiting of some limit baffles will block one side of the pallet truck body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the surface structure of an air cargo container pallet truck with automatic limiting function according to an embodiment of the present utility model;

[0022] Figure 2This is a side view of an air cargo container pallet truck with automatic limiting function according to an embodiment of the present utility model;

[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is an internal cross-sectional view of the shrinkage groove in an air cargo container pallet truck with automatic limiting function according to an embodiment of the present utility model;

[0025] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0026] Figure 6 This is an internal cross-sectional view of the linkage frame of an air cargo container pallet truck with automatic limiting function, according to an embodiment of the present utility model.

[0027] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8 This is a bottom view of an air cargo container pallet truck with automatic limiting function according to an embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of the installation structure of the rotating shaft in an air cargo container pallet truck with automatic limiting function according to an embodiment of the present utility model.

[0030] Figure 10 This is a schematic diagram of the surface structure of a lifting lever in an air cargo container pallet truck with automatic limiting function according to an embodiment of the present utility model.

[0031] In the picture:

[0032] 1. Pallet truck body; 2. Lifting slot; 3. Shrinking slot; 4. Telescopic spring 1; 5. Linkage frame; 6. Limiting baffle; 7. Traction wheel; 8. Transmission mechanism; 801. Driven rod; 802. Positioning frame; 803. Telescopic rod; 804. Push block; 9. Automatic lifting mechanism; 901. Support rod; 902. Suspension slot; 903. Limiting post; 904. Positioning plate; 905. Limiting rod; 906. Suspension ring; 907. Return spring; 10. Traction frame; 11. Braking mechanism; 1101, transmission column; 1102, pressing block; 1103, rotating shaft; 1104, brake plate; 1105, blocking plate; 1106, telescopic spring II; 12, adjusting groove; 13, locking mechanism; 1301, telescopic spring III; 1302, limit block; 1303, locking groove; 1304, pressing rod; 1305, lifting inclined block; 1306, pressure-bearing inclined block; 14, transmission groove; 15, lifting lever; 16, arc plate; 17, steering wheel. Detailed Implementation

[0033] 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.

[0034] According to an embodiment of the present invention, an air cargo container pallet truck with automatic limiting function is provided.

[0035] Example 1:

[0036] like Figures 1-4As shown, an air cargo container pallet truck with automatic limiting function according to an embodiment of the present invention includes a pallet truck body 1. Multiple lifting slots 2 are formed on each side of the surface of the pallet truck body 1. Each lifting slot 2 has a contraction slot 3 at its bottom. A pair of telescopic springs 4 are fixedly connected to both sides of the interior of the contraction slot 3. A linkage frame 5 is provided at the bottom of the pallet truck body 1, and the linkage frame 5 is fixedly connected to each telescopic spring 4. Limiting baffles 6 are slidably installed inside the lifting slots 2 to limit and block cargo on the surface of the pallet truck after being raised. A pair of traction wheels 7 are installed on both sides of the bottom of the pallet truck body 1. A transmission mechanism 8 is provided on one side of the traction wheels 7 to activate the lifting of each limiting baffle 6 by rotating the traction wheels 7. An automatic lifting mechanism 9 is provided on one side of the transmission mechanism 8 to suspend the linkage frame 5 and cooperate with the transmission mechanism 8 to achieve automatic upward movement of the linkage frame 5. A traction frame 10 is rotatably installed at one end of the pallet truck body 1 to connect to a tractor vehicle for transporting cargo. The pallet truck body 1 moves; a braking mechanism 11 is provided between the traction frame 10 and the traction wheel 7 to brake the untraction pallet truck; an adjustment groove 12 is opened on one side of the lifting groove 2, and a locking mechanism 13 is provided inside the adjustment groove 12 to automatically lock the limit baffle 6 after it is raised; the transmission mechanism 8 includes a driven rod 801 rotatably mounted on one side of the surface of the traction wheel 7, and a positioning frame 802 is fixedly connected to both sides of the bottom surface of the pallet truck body 1. A telescopic rod 803 is slidably mounted at the end of the positioning frame 802. One end of the driven rod 801 is rotatably connected to the telescopic rod 803, and a push block 804 is fixedly connected to the end of the telescopic rod 803. One side of the push block 804 cooperates with the support rod 901. Through the rotation of the traction wheel 7, one end of the driven rod 801 is driven to rotate around the surface of the traction wheel 7, and the other end of the driven rod 801 can continuously push the telescopic rod 803 to extend and retract, so that the telescopic rod 803 drives the push block 804 to continuously perform reciprocating linear motion.

[0037] like Figures 2-6As shown, the automatic lifting mechanism 9 includes support rods 901 fixedly connected to both sides of the bottom surface of the linkage frame 5. A suspension groove 902 is formed on one side of the surface of the support rod 901. A limit post 903 is fixedly connected inside the suspension groove 902. Positioning plates 904 are fixedly connected to both sides of the bottom surface of the pallet truck body 1. A pair of limit rods 905 are slidably mounted on the surface of the positioning plates 904. Suspension rings 906 are fixedly connected to the ends of the two limit rods 905. A return spring 907 is fixedly connected between the suspension ring 906 and the positioning plate 904. When the linkage frame 5 drives the limit baffle 6 to rise, the suspension ring 906 and the return spring 907 are compressed and contracted to one side of the support rod 901. When the linkage frame 5 moves the support rod 901 downward, the suspension groove 902 moves to one side of the suspension ring 906. At this time, the elastic force of the return spring 907 can push the suspension ring 906 to move onto the limit post 903, so that the suspension ring 906 supports and limits the lowered linkage frame 5. When the traction wheel 7 drives the push block 804 in the transmission mechanism 8 to move to one side of the support rod 901, the push block 804 can push the suspension ring 906 away from the limit post 903. At this time, the suspension ring 906 no longer limits the linkage frame 5, and the elastic force of the telescopic spring 4 can quickly pull the linkage frame 5 upward, so that the linkage frame 5 pushes each limit baffle 6 to rise.

[0038] like Figures 3-10As shown, the braking mechanism 11 includes transmission columns 1101 slidably mounted on both sides of the bottom surface of the pallet truck body 1. Compression blocks 1102 are fixedly connected to both sides of the surface of the towing frame 10 at positions corresponding to the transmission columns 1101. A rotating shaft 1103 is rotatably mounted at one end of the bottom of the pallet truck body 1. Brake plates 1104 are fixedly connected to both sides of the surface of the rotating shaft 1103. The transmission columns 1101 and the rotating shaft 1103 are rotatably connected. Rotation of the towing frame 10 causes the compression blocks 1102 to compress and push the transmission columns 1101. The movement of the transmission columns 1101 pushes the rotating shaft 1103 to rotate, thereby causing the rotating shaft 1103 to rotate the brake plates 1104 to the surface of the traction wheel 7 tire, thus braking it. The vehicle is limited in position; a barrier plate 1105 is fixedly connected to one side of the surface of the transmission column 1101, and a telescopic spring 1106 is fixedly connected to one end of the barrier plate 1105. The end of the telescopic spring 1106 is fixedly connected to the pallet truck body 1. When the squeezing block 1102 squeezes and pushes the transmission column 1101, the transmission column 1101 can drive the telescopic spring 1106 to stretch through the barrier plate 1105. When the traction frame 10 is lifted, the elastic force of the telescopic spring 1106 can pull the transmission column 1101 to automatically reset, thereby releasing the brake state after the transmission column 1101 drives the rotating shaft 1103 and the brake pad to rotate; the locking mechanism 13 includes a telescopic spring 1301 fixedly connected in the adjusting groove 12, which extends and retracts. A limiting block 1302 is fixedly connected to the end of spring 1301. A locking groove 1303 is opened on one side of the limiting baffle 6. One end of the limiting block 1302 cooperates with the locking groove 1303. When the limiting baffle 6 is raised, the locking groove 1303 just moves to one side of the limiting block 1302. At this time, the elastic force of the telescopic spring 1301 can push one end of the limiting block 1302 to slide into the locking groove 1303, thereby locking the raised limiting baffle 6. A pressing rod 1304 is slidably installed on the top of the adjusting groove 12. A lifting inclined block 1305 is fixedly connected to the end of the pressing rod 1304. A pressure inclined block 1306 is fixedly connected to one side of the limiting block 1302. The lifting inclined block 1305 and the pressing rod 1304 are fixedly connected to the end of the adjusting groove 12. The inclined surface of the pressure-bearing inclined block 1306 cooperates with the inclined surface of the limiting block 1302. When one end of the limiting block 1302 is slidably installed into the locking groove 1303, the pressure-bearing inclined block 1306 can push the lifting inclined block 1305 to move upward. When it is necessary to release the locking state of the limiting baffle 6, the pressing rod 1304 is pushed downward, so that the lifting inclined block 1305 presses the pressure-bearing inclined block 1306 through the inclined surface, so that the pressure-bearing inclined block 1306 drives one end of the limiting block 1302 to slide out of the locking groove 1303, thereby releasing the locking state. The bottom surface of the pallet truck body 1 has transmission grooves 14 on both sides. The lifting lever 15 is rotatably installed inside the transmission groove 14. One end of the lifting lever 15 is fixedly connected to the arc plate 16, and the arc plate 16 is in sliding contact with the linkage frame 5.By lifting one end of the lifting lever 15 upward, the arc plate 16 at the other end of the lifting lever 15 can rotate downward, thereby pressing down the linkage frame 5, so that the linkage frame 5 can be suspended on both sides of the suspension ring 906 after it moves down; the bottom sides of the pallet truck body 1 are rotatably mounted with steering wheels 17, which are used to achieve the steering function when the pallet truck body 1 moves by following the rotation of the traction frame 10.

[0039] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0040] In summary, with the help of the above-mentioned technical solution of this utility model, in actual use, the pallet truck body 1 is moved to the loading position. By lifting one end of the lifting lever 15 upward, the arc plate 16 at the other end of the lifting lever 15 can rotate downward, thereby pressing down the linkage frame 5. When the linkage frame 5 drives the support rod 901 to move downward, the suspension groove 902 moves to one side of the suspension ring 906. At this time, the elastic force of the return spring 907 can push the suspension ring 906 to move onto the limit post 903, thereby allowing the suspension ring 906 to support and limit the lowered linkage frame 5. At this time, the limit baffle 6 after being raised can be freely retracted into the lifting groove 2 by pushing the squeezing rod 1304 in the locking mechanism 13, thus facilitating the loading of the pallet truck body 1. After loading is completed, the tractor pulls the vehicle. The pull frame 10 pulls the pallet truck body 1 to move. At this time, the traction wheels 7 on both sides of the bottom of the pallet truck body 1 start to rotate. Through the rotation of the traction wheels 7, one end of the driven rod 801 can rotate around the surface of the traction wheel 7. The other end of the driven rod 801 can continuously push the telescopic rod 803 to move in and out, so that the telescopic rod 803 drives the push block 804 to continuously reciprocate linearly. When the push block 804 moves to the side of the support rod 901, the push block 804 can push the suspension ring 906 away from the limit post 903. At this time, the suspension ring 906 no longer limits the linkage frame 5. The elastic force of the telescopic spring 4 can quickly pull the linkage frame 5 upward, so that the linkage frame 5 pushes each retracted limit baffle 6 to rise, realizing the automatic rise of each limit baffle 6 when the pallet truck body 1 moves.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aircraft cargo pallet dolly with automatic limiting function, characterized in that, The tray car body (1) is provided with a plurality of lifting grooves (2) on the surface, the bottom of the lifting groove (2) is provided with a contraction groove (3), the inside of the contraction groove (3) is fixedly connected with a telescopic spring (4) on both sides, the bottom of the tray car body (1) is provided with a linkage frame (5), the linkage frame (5) is fixedly connected with the telescopic spring (4), the inside of the lifting groove (2) is slidably installed with a limiting baffle (6), the bottom of the tray car body (1) is installed with a traction wheel (7) on both sides, one side of the traction wheel (7) is provided with a transmission mechanism (8), one side of the transmission mechanism (8) is provided with an automatic lifting mechanism (9), one end of the tray car body (1) is rotatably installed with a traction frame (10), the traction frame (10) and the traction wheel (7) are provided with a brake mechanism (11) therebetween, one side of the lifting groove (2) is provided with an adjusting groove (12), and the inside of the adjusting groove (12) is provided with a locking mechanism (13).

2. The pallet truck with automatic limiting function according to claim 1, characterized in that, The transmission mechanism (8) comprises a driven rod (801) rotatably installed on one side of the surface of the traction wheel (7), the bottom surface of the tray car body (1) is fixedly connected with a positioning frame (802) on both sides, the positioning frame (802) is slidably installed with a telescopic rod (803) at the tail end, one end of the driven rod (801) is rotatably connected with the telescopic rod (803), and the tail end of the telescopic rod (803) is fixedly connected with a pushing block (804).

3. The pallet truck with automatic limiting function according to claim 2, characterized in that, The automatic lifting mechanism (9) comprises a supporting rod (901) fixedly connected on both sides of the bottom surface of the linkage frame (5), the surface of the supporting rod (901) is provided with a hanging groove (902) on one side, the inside of the hanging groove (902) is fixedly connected with a limiting column (903), and one side of the pushing block (804) is matched with the supporting rod (901).

4. The pallet truck with automatic limiting function according to claim 3, characterized in that, The bottom surface of the tray car body (1) is fixedly connected with a positioning plate (904) on both sides, the surface of the positioning plate (904) is slidably installed with a limiting rod (905), the tail end of the limiting rod (905) is fixedly connected with a hanging ring (906), and the hanging ring (906) and the positioning plate (904) are fixedly connected with a return spring (907) therebetween.

5. The pallet truck with automatic limiting function according to claim 1, characterized in that, The brake mechanism (11) comprises a transmission column (1101) slidably installed on both sides of the bottom surface of the tray car body (1), the surface of the traction frame (10) is fixedly connected with a pressing block (1102) on both sides, one end of the bottom of the tray car body (1) is rotatably installed with a rotating shaft (1103), the surface of the rotating shaft (1103) is fixedly connected with a brake plate (1104) on both sides, and the transmission column (1101) is rotatably connected with the rotating shaft (1103).

6. The pallet truck with automatic limiting function according to claim 5, characterized in that, The surface of the transmission column (1101) is fixedly connected with a blocking plate (1105) on one side, one end of the blocking plate (1105) is fixedly connected with a telescopic spring (1106), and the tail end of the telescopic spring (1106) is fixedly connected with the tray car body (1).

7. The pallet truck with automatic limiting function according to claim 1, characterized in that, The locking mechanism (13) comprises a telescopic spring (1301) fixedly connected in the adjusting groove (12), the tail end of the telescopic spring (1301) is fixedly connected with a limiting block (1302), one side of the limiting baffle (6) is provided with a locking groove (1303), and one end of the limiting block (1302) is matched with the locking groove (1303).

8. The pallet truck with automatic limiting function according to claim 7, characterized in that, The top of the adjusting groove (12) is slidingly installed with an extruding rod (1304), the end of the extruding rod (1304) is fixedly connected with a lifting inclined block (1305), one side of the limiting block (1302) is fixedly connected with a pressure receiving inclined block (1306), and the inclined surfaces of the lifting inclined block (1305) and the pressure receiving inclined block (1306) are matched.

9. The pallet truck with automatic limiting function according to claim 1, characterized in that, The bottom surface of the tray car body (1) is provided with transmission grooves (14) on both sides, the inside of the transmission grooves (14) is rotatably installed with lifting levers (15), one end of the lifting levers (15) is fixedly connected with arc-shaped plates (16), and the arc-shaped plates (16) slidingly contact the linkage frames (5).

10. The pallet truck with automatic limiting function according to claim 1, characterized in that, The tray car body (1) is rotatably installed with steering wheels (17) at the bottom on both sides.

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