A unloading device

Abstract

The present invention relates to an unloading device, which comprises a mobile cart and a conveying device; the conveying device comprises two rows of telescopic vertical rods arranged symmetrically, a conveying rod arranged at intervals between the two rows of telescopic vertical rods, and telescopic devices respectively fixed at both ends of the conveying rods for pulling apart or merging adjacent telescopic vertical rods; the telescopic vertical rods in each row are arranged at intervals and the number is more than 2, the conveying rods are rotatably provided with rollers, and the bottom of the telescopic vertical rods in the conveying device close to the mobile cart is arranged on the mobile cart. The present invention has a flexible structure, convenient article transmission, energy saving, and is easy to store.

Description

Technical Field

[0001] The invention relates to the field of logistics and transportation, and in particular to a cargo unloading device. Background Art

[0002] With the rapid development of the logistics industry, a large number of goods need to be transported. The traditional unloading method is mainly manual delivery, which has high labor costs, high risk factors and low efficiency. The emerging unloading device is mainly driven by motors to drive the conveyor belt device to move the goods. Although the efficiency is improved, the cost of use is high and maintenance is difficult. During work, it occupies a large area, is inconvenient to move, cannot be flexibly modified according to the size of the space, and cannot be recycled between warehouses. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide an unloading device with flexible structure, convenient article transportation, energy saving and convenient storage.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] It includes a mobile cart and a conveyor;

[0006] The conveying device includes two rows of telescopic poles arranged symmetrically, a conveying rod arranged at intervals between the two rows of telescopic poles, and telescopic devices respectively fixed at both ends of the conveying rods for pulling apart or merging adjacent telescopic poles; the telescopic poles in each row are arranged at intervals and the number is more than 2, the conveying rods are rotatably provided with rollers, and the bottom of the telescopic pole close to the moving cart in the conveying device is arranged on the moving cart.

[0007] Furthermore, the telescopic device is a diamond-shaped telescopic device, which includes a plurality of diamond-shaped brackets capable of being stretched laterally and connected in sequence, each of the diamond-shaped brackets includes four skeleton frames and four hinge points for hingedly connecting adjacent skeleton frames, a transmission rod is provided through the hinge point at the top of each diamond-shaped bracket, and the hinge points on both sides of the diamond-shaped bracket are respectively used for hinge connection with the adjacent diamond-shaped brackets.

[0008] Furthermore, a reinforcing rod is provided below each of the transmission rods, and the reinforcing rod is fixedly connected to the frame frame of the diamond-shaped bracket;

[0009] A first oblique groove is arranged at the hinge point on the top of the rhombus bracket. The first oblique groove is located on a frame frame on the upper part of the rhombus bracket. The transmission rod passes through the first oblique groove. A spring is arranged between the transmission rod and the reinforcing rod.

[0010] Furthermore, the diamond-shaped bracket also includes a V-shaped frame plate with a tip facing downward, and the top ends of the V-shaped frame plate are respectively hinged to two frame frames on the upper part of the diamond-shaped bracket.

[0011] Further, the telescopic device is a sliding rod telescopic device, which includes a limit plate arranged on each transmission rod and a limit rod device connecting adjacent limit plates, the limit plate is provided with four vertical second roller grooves, two upper and two lower, symmetrically distributed, a pair of limit balls are respectively provided at the lower part of the upper part of the second roller groove, each pair of limit balls are symmetrically arranged in the ball grooves on both sides of the second roller groove, the ball grooves are arranged vertically to the second roller grooves, and the limit balls are fixed in the ball grooves by second springs;

[0012] The limit rod device comprises two limit rods connected by central rotation, the two limit rods are cross-arranged, one end of each limit rod is movably arranged in the second roller groove at the upper part of the limit plate on one side of the limit rod, and the other end of the limit rod is movably arranged in the second roller groove at the lower part of the limit plate on the other side of the limit rod;

[0013] Second rollers matched with the second roller groove and the limiting balls are respectively arranged at both ends of the limiting rod, and the limiting balls are used to limit the limiting rod.

[0014] Furthermore, the upper portion of the limit plate is provided with an installation inclined groove, and the transmission rod is rotatably arranged on the installation inclined groove.

[0015] The mounting bevel groove is inclined and is located above the second roller groove.

[0016] Furthermore, a telescopic guardrail is detachably provided between two adjacent telescopic upright poles, and the telescopic guardrail is located above the conveying rod;

[0017] The telescopic guardrail includes folding units hinged together in sequence, the number of the folding units is more than 2, and each of the folding units includes two hinged folding plates and a rotating wheel rotatably arranged between the two folding plates.

[0018] Furthermore, a supporting cross bar is arranged between the two rows of telescopic vertical rods, and two ends of the supporting cross bar are respectively arranged on two symmetrically arranged telescopic vertical rods.

[0019] Furthermore, a beam grating is arranged above the transmission rod and near the position of the mobile cart, and the bottom of the beam grating is arranged on two symmetrically arranged telescopic vertical rods;

[0020] The mobile cart is provided with a weighing platform, an LED screen and power supplies for the weighing platform and the LED screen respectively. The LED screen is electrically connected to the opposing grating and the weighing platform respectively.

[0021] Furthermore, the mobile cart comprises an L-shaped frame, a cart roller with brakes arranged at the bottom of the flat plate of the frame, and handles and buffer pads respectively arranged on both sides of the vertical plate of the frame;

[0022] The weighing platform is arranged on a flat plate of the vehicle frame through a weighing platform telescopic rod;

[0023] The LED screen is arranged on the upper part of the vertical plate of the vehicle frame through the LED screen telescopic rod;

[0024] The vertical plate and the weighing platform of the vehicle frame are respectively located on both sides of the buffer pad.

[0025] Furthermore, the roller includes a bearing sleeved on the transmission rod, a triangular bracket rotatably arranged on the outer periphery of the bearing, and rotating wheels rotatably arranged on three ends of the triangular bracket respectively.

[0026] Beneficial effects of the present invention:

[0027] 1. The present invention has a wide range of applications. The number of telescopic uprights can be increased or decreased according to the transportation distance of the items, thereby adjusting the length of the conveying device, thereby overcoming the drawback that the existing conveyor belt transmission mode cannot change the transportation distance.

[0028] 2. The present invention does not require external power when transporting items, and can complete the transportation by relying solely on the gravity of the items being transported, which is more energy-saving and environmentally friendly.

[0029] 3. The structure of the present invention is flexible, and the telescopic device plays the function of merging and opening the present invention. When not in use, the telescopic vertical rods are merged together, and when in use, the telescopic vertical rods are pulled for transportation. Therefore, the present invention is easy to store and can be recycled.

[0030] 4. The conveying device of the present invention is made of flexible material and has a certain curvature as a whole, so it can realize the transportation of goods on curved roads, which is impossible to achieve with existing technologies such as conveyor belts, and has practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention when used;

[0032] Figure 2 This is a schematic diagram of the overall structure of embodiment 1 of the present invention when it is stored;

[0033] Figure 3 This is a schematic diagram of the structure of the conveying device of Example 1 of the present invention when it is unfolded;

[0034] Figure 4 It is a structural schematic diagram of the telescopic guardrail of the present invention;

[0035] Figure 5It is a structural schematic diagram of the mobile cart of the present invention;

[0036] Figure 6 This is a schematic structural diagram of the first inclined groove on the diamond-shaped bracket according to Example 1 of the present invention;

[0037] Figure 7 A schematic diagram of the structure of the roller in Embodiment 2 and Embodiment 4 of the present invention;

[0038] Figure 8 A partial cross-sectional schematic diagram of the roller in Embodiment 2 and Embodiment 4 of the present invention;

[0039] Fig. 9 This is a side view of the overall structure of Example 1 of the present invention when in use;

[0040] Fig.10 A top view of the overall structure of Example 1 of the present invention when in use;

[0041] Fig.11 It is a side view of the embodiment 1 of the present invention when it is stored;

[0042] Fig.12 It is a side view of the conveying device of Example 1 of the present invention when it is unfolded;

[0043] Fig.13 It is a side view of the folding unit of Embodiment 1 of the present invention;

[0044] Fig.14 It is a top view of the folding unit of Example 1 of the present invention;

[0045] Fig.15 This is a schematic diagram of the position of the spring in Example 1 of the present invention;

[0046] Fig.16 This is a schematic diagram of the position of the transmission rod in the first chute after receiving the cargo in Example 1 of the present invention;

[0047] Fig.17 It is a structural schematic diagram of the clamping block and the clamping slot in Example 1 of the present invention;

[0048] Fig.18 This is a schematic diagram of the overall structure when used in Example 4 of the present invention;

[0049] Fig.19 This is a schematic diagram of the structure after the telescopic uprights are combined in Embodiment 4 of the present invention;

[0050] Fig. 20 It is a schematic diagram of the structure of the telescopic device in Example 4 of the present invention;

[0051] Fig.21 This is a schematic structural diagram of a telescopic device between two adjacent telescopic upright poles in Embodiment 4 of the present invention;

[0052] Fig. 22 Schematic diagram of the position of the limit rod after two adjacent telescopic uprights are pulled apart in Example 4 of the present invention;

[0053] Fig.23 Schematic diagram of the position of the limit rod after two adjacent telescopic uprights are combined in Example 4 of the present invention;

[0054] Fig.24 for Fig. 22 A partial cross-sectional schematic diagram of

[0055] Fig.25 Schematic diagram of the position of the limiting rod after being limited by the limiting ball in Example 3;

[0056] Fig.26 Schematic diagram of the position of the limiting rod when it is limited by the limiting ball in Example 3;

[0057] Fig. 27 is a schematic structural diagram of the second roller in Example 3;

[0058] In the figure: 1. Mobile cart, 1-1 car frame, 1-2 weighing platform, 1-3 cart roller, 1-4 handle, 1-5 power supply, 1-6 LED screen, 1-7 card slot, 2 reinforcement rod, 3 telescopic vertical rod, 3-1 card block, 4 transmission rod, 5 diamond bracket, 5-1 V-shaped frame plate, 6 first inclined slot, 7 spring, 8 telescopic guardrail, 9 folding unit, 9-1 folding plate, 9-2 rotating wheel, 10 supporting cross bar, 11 opposite beam grating, 12 buffer pad, 13 suction cup, 14 roller, 14-1 bearing, 14-2 triangular bracket, 14-3 rotating wheel, 15 limit plate, 15-1 second roller slot, 15-2 limit ball, 15-3 second spring, 15-4 installation inclined slot, 15-5 ball slot, 16 limit rod, 16-1 second roller. DETAILED DESCRIPTION

[0059] The present invention is further described in detail below in conjunction with embodiments, but the scope of the present invention is not limited thereto, and the scope of protection required is recorded in the claims.

[0060] Example 1

[0061] like Figure 1-6 by Figure 9-16 As shown, the present invention provides an unloading device, which includes a mobile cart 1 and a conveying device; one end of the conveying device is connected to the mobile cart 1, the conveying device is used to convey items, and the mobile cart 1 is used for the conveying device to receive the transmitted items.

[0062] The conveying device comprises two rows of telescopic uprights 3 symmetrically arranged, a conveying rod 4 spaced between the two rows of telescopic uprights 3, and rhombus-shaped telescopic devices respectively fixing the two ends of the conveying rod 4;

[0063] The telescopic rods 3 are telescopic structures and can be raised or lowered as needed. In each row of telescopic rods 3, the number of telescopic rods 3 is greater than or equal to 2, and these telescopic rods 3 are arranged at intervals.

[0064] The two rows of telescopic uprights 3 correspond to each other one by one and are symmetrically distributed.

[0065] The conveying rod 4 is provided with rollers 14, the number of which is greater than or equal to one. The rollers 14 are rotatably provided on the conveying rod 4, so that when the conveyed articles are conveyed on the conveying rod 4, the friction is reduced by the rolling of the rollers 14, thereby improving the conveying efficiency.

[0066] The diamond-shaped telescopic device includes a plurality of diamond-shaped brackets 5 that can be stretched laterally and are connected in sequence, and the number of diamond-shaped brackets 5 is greater than or equal to one. Each of the diamond-shaped brackets 5 includes four skeleton frames and four hinge points that hinge adjacent skeleton frames, and the four skeleton frames form a quadrilateral shape, and the four hinge points are respectively facing upward, downward, and left and right. In this way, the diamond-shaped bracket 5 is pulled in the horizontal direction, and the diamond-shaped bracket 5 is stretched, and the diamond-shaped bracket 5 is retracted in the horizontal direction. A transmission rod 4 is provided through the hinge point at the top of each diamond-shaped bracket 5, and the hinge points on both sides of the diamond-shaped bracket 5 are respectively used to hinge with the adjacent diamond-shaped bracket 5, that is, the hinge points of the diamond-shaped bracket 5 facing the left and right directions are respectively used to connect with the adjacent diamond-shaped bracket 5. In this way, multiple diamond-shaped brackets 5 that are hinged in sequence are formed, and simultaneous stretching or retraction and merging can be achieved.

[0067] The bottom of the telescopic pole 3 near the mobile cart 1 in the conveying device is arranged on the mobile cart 1. Preferably, the bottom of the telescopic pole 3 near the mobile cart 1 in the conveying device is arranged on the mobile cart 1 through a key connection, thereby realizing the connection between the conveying device and the mobile cart 1. When the present invention is used, two rows of telescopic poles 3 are distributed at a certain distance. The number of telescopic poles 3 depends on the distance of the object transmission. The number of telescopic poles 3 can be flexibly increased according to the length of the transmission distance. The mobile cart 1 is the receiving position of the object. The mobile cart 1 extends to the unloading position of the object. The height of the telescopic pole 3 is adjusted so that the telescopic pole 3 at the unloading position is the highest and the height of the telescopic pole 3 on the mobile cart 1 is the lowest. The height of the telescopic pole 3 from the unloading position to the position of the mobile cart 1 is gradually reduced, so that the conveying rod 4 of the conveying device is in a slope shape. This can be achieved by adjusting the height of the telescopic pole 3. When conveying objects, the objects use their own gravity to promote the conveying of the objects to the mobile cart 1 through the rolling of the roller 14. Before conveying items, the hinge points on the left and right sides of the diamond-shaped bracket 5 of the diamond-shaped telescopic device are stretched to both sides respectively to extend the conveying device outward. The bottom of the telescopic rod 3 close to the mobile cart 1 is fixed on the mobile cart 1, and the bottoms of the remaining telescopic rods 3 are fixed to the ground through suction cups 13.

[0068] After the transmission is completed, the telescopic uprights 3 are merged, and the hinge points on the left and right sides of the diamond-shaped bracket 5 of the diamond-shaped telescopic device are respectively closed to the middle, and finally the merged and contracted diamond-shaped telescopic device is placed on the mobile cart 1 for storage. The mobile cart 1 can be moved, and the device of the present invention can be moved to a designated storage place, which is convenient and flexible and has a wide range of applications.

[0069] Furthermore, a reinforcing rod 2 is provided below each of the transmission rods 4, and the reinforcing rod 2 is fixedly connected to the frame frame of the diamond-shaped bracket 5. Preferably, the reinforcing rod 2 is fixedly connected to the frame frame of the upper half of the diamond-shaped bracket 5. From the figure, each reinforcing rod 2 is provided on the upper right frame frame of the corresponding diamond-shaped bracket 5.

[0070] Furthermore, a first inclined groove 6 is provided at the hinge point on the top of the rhombus bracket 5, and the first inclined groove 6 is located on a frame frame on the upper part of the rhombus bracket 5. Each rhombus bracket 5 is provided with a first inclined groove 6, and the transmission rod 4 passes through the inclined groove 6 and can slide in the inclined groove 6. A spring 7 is provided between the transmission rod 4 and the reinforcing rod 2, and the number of the springs 7 is greater than or equal to 1, preferably 3, from Figure 4 It can be seen that when there are three springs 7, they are respectively located near the two ends of the transmission rod 4 and in the middle of the transmission rod 4.

[0071] When there is no object on the transmission rod 4, the transmission rod 4 is located at the top of the U-shaped groove 6 under the elastic force of the spring 7. When there is an object on the transmission rod 4, the gravity of the object causes the transmission rod 4 to slide down, that is, the transmission rod 4 is moved downward.

[0072] The rod 4 moves downward in the U-shaped groove 6, which causes the angle between the goods and the conveying rod 4 to become smaller, increasing the downward force of the goods along the skeleton frame direction of the diamond-shaped bracket, so that the goods can be better and more stably carried on the conveying rod 4, improving the transmission quality and efficiency.

[0073] Furthermore, the diamond-shaped bracket 5 also includes a V-shaped frame plate 6, the tip of the frame plate 6 faces downward, and the top ends of the V-shaped frame plate 6 are respectively hinged to the two frame frames on the upper part of the diamond-shaped bracket 5, so as to increase the strength.

[0074] Furthermore, a detachable telescopic guardrail 8 is provided between two adjacent telescopic uprights 3 , and the telescopic guardrail 8 is located above the conveying rod 4 ; preferably, the telescopic guardrail 8 is plugged into the telescopic uprights 3 , and can be easily installed or removed.

[0075] The number of telescopic guardrails 8 is more than one, which can be adjusted as needed, and can prevent the transported items from escaping from the conveying device, and act as a barrier. The rotating wheel 9-2 acts to reduce friction, so that the items can be smoothly transported. In order to balance cost and effect, more telescopic guardrails 8 can be set at a position far away from the mobile cart 1, and no telescopic guardrails 8 can be set at a position close to the mobile cart 1.

[0076] The telescopic guardrail 8 includes folding units 9 that are hinged together in sequence. The number of the folding units 9 is more than 2. The folding unit 9 includes two folding plates 9-1 that are hinged together and a rotating wheel 9-2 that is rotatably arranged between the two folding plates 9-1. The rotating wheel 9-2 is arranged in the direction of the conveying rod 4. On the two folding plates 9-1 of a folding unit 9, one end of each folding plate 9-1 is hinged to the folding plate 9-1 of another folding unit 9, and the other end is provided with the rotating wheel 9-2 of the folding unit 9. When each folding unit 9 is fully unfolded, the two folding plates 9-1 are 180 degrees apart. When each folding unit 9 is fully merged and retracted, the two folding plates 9-1 are attached together. When in use, in most cases, Figure 1 As shown, the folding unit 9 is V-shaped.

[0077] Furthermore, in each folding unit 9, two hinged folding plates 9-1 are respectively provided with mounting grooves 9-9 adapted to the rotating wheel 9-2, the rotation center of the rotating wheel 9-2 is located at the hinge of the two folding plates 9-1, and the rotating wheel 9-2 is arranged in the two mounting grooves 9-9.

[0078] Furthermore, suction cups 13 for gripping the ground are provided at the bottoms of the remaining telescopic uprights 3 in the conveying device.

[0079] Furthermore, a support cross bar 10 is provided between the two rows of telescopic uprights 3, and the two ends of the support cross bar 10 are respectively provided on two symmetrically arranged telescopic uprights 3. The support cross bar 10 serves to increase the strength and stability of the overall device, and the support cross bar 10 is located below the telescopic uprights 3.

[0080] Furthermore, a beam grating 11 is provided above the transmission rod 4 and near the position of the mobile cart 1, and the bottom of the beam grating 11 is provided on two symmetrically arranged telescopic upright rods 3. The beam grating 11 is used to count the transmitted articles, which plays a role in the intelligence of the device, reduces the workload of the operator in manual counting and improves the accuracy.

[0081] The mobile cart 1 is provided with a weighing platform 1-2, an LED screen 1-6 and a power supply 1-5, and the power supply 1-5 supplies power to the weighing platform 1-2 and the LED screen 1-6. The LED screen 1-6 is electrically connected to the beam grating 11 and the weighing platform 1-2 respectively, and a power supply device is integrated in the beam grating 11. The LED screen 1-6 is electrically connected to the beam grating 11 to count the transported goods, and the obtained data is displayed on the LED screen 1-6. The connection between the LED screen 1-6 and the beam grating 11 belongs to the prior art, and the LED screen 1-6 and the weighing platform 1-2 are electrically connected, and the connection method belongs to the prior art. The LED screen 1-6 will display the number of goods weighed by the weighing platform 1-2, and the LED screen will display the weight and number of the transported items, so that people can see it at a glance.

[0082] Furthermore, the mobile cart 1 includes an L-shaped vehicle frame 1-1, a cart roller 1-3 with brakes arranged at the bottom of the flat plate of the vehicle frame 1-1, and handles 1-4 and buffer pads 12 respectively arranged on both sides of the vertical plate of the vehicle frame 1-1; the vehicle frame 1-1 includes a horizontally arranged flat plate of the vehicle frame 1-1 and a vertical plate of the vehicle frame 1-1 vertically arranged on the flat plate of the vehicle frame 1-1.

[0083] The weighing platform 1-2 is arranged on the flat plate of the vehicle frame 1-1 through a telescopic rod, and the weighing platform can be moved up and down, and the structure is more flexible;

[0084] The LED screen 1-6 is arranged on the upper part of the vertical plate of the vehicle frame 1-1 through the LED screen telescopic rod. The LED screen 1-6 can move up and down, and the structure is more flexible.

[0085] The vertical plate of the vehicle frame 1-1 and the weighing platform 1-2 are respectively located on both sides of the buffer pad 12. The buffer pad 12 is used to buffer the conveyed articles.

[0086] The cart rollers 1-3 are cart rollers with brakes.

[0087] Furthermore, the damping coefficient of the roller 14 on the conveying rod 4 close to the moving cart 1 is higher than the damping coefficient of the roller 14 on the conveying rod 4 far from the moving cart 1. The roller 14 with such a high damping coefficient has a higher friction force, plays a buffering role, reduces the speed of the conveyed objects swooping down, and prevents the objects from being damaged due to the excessively fast descending speed.

[0088] Furthermore, the telescopic vertical rod 3 is a telescopic structure, and there are many implementation methods. For example, implementation method 1 is that the telescopic vertical rod 3 includes a first vertical rod 3-1 and a second vertical rod 3-2 that is mounted on the first vertical rod 3-1 and located above the second vertical rod 3-2. The first vertical rod 3-1 and the second vertical rod 3-2 are respectively provided with matching first positioning holes and second positioning holes, and the first positioning holes and the second positioning holes are connected together by bolts.

[0089] For example, implementation method 2 is that the telescopic vertical rod 3 includes a first vertical rod 3-1 and a second vertical rod 3-2 which is mounted on the first vertical rod 3-1 and located above the second vertical rod 3-2. The first vertical rod 3-1 and the second vertical rod 3-2 are respectively provided with matching first positioning holes and second positioning holes, and the second vertical rod 3-2 is provided with a spring buckle which is matched with the first positioning hole. Through the clamping action of the spring buckle on the first positioning hole, the first vertical rod 3-1 and the second vertical rod 3-2 can be flexibly adjusted up and down in height.

[0090] Furthermore, the telescopic pole 3 is also provided with a scale for identifying the height, so that people can control and adjust the height of the telescopic pole 3 more accurately.

[0091] In the present invention, the conveying rod 4 is made of a flexible material and can be bent. Therefore, the conveying device of the device of the present invention can be bent as a whole to realize the transportation of goods on a curve, which is impossible to achieve with existing technologies such as conveyor belt transmission. The present invention has a wide range of applications.

[0092] The present invention can be viewed as being divided into three parts: a moving cart part, a conveying buffer part and a conveying part.

[0093] The mobile cart part includes a mobile cart 1; the transmission buffer part includes a telescopic pole 3 arranged on the mobile cart 1 and a corresponding transmission pole 4 and a diamond bracket 5 connected to the telescopic pole 3. The transmission part includes the remaining telescopic poles 3 and their corresponding transmission poles 4 and diamond brackets 5 arranged on the ground.

[0094] The overall structure of the transmission buffer part is similar to that of the transmission part, except that: 1. the setting position of the telescopic vertical rod is different; 2. the damping coefficient of the material of the roller 14 on the transmission rod 4 is different.

[0095] In the present invention, the two rows of telescopic rods 3 on the mobile cart 1, that is, the telescopic rods 3 of the transmission buffer part, are detachably arranged on the mobile cart 1. Fig.17 As shown, a clamping block 3-1 is provided at the bottom end of the telescopic vertical rod 3 on the mobile cart 1, and a clamping groove 1-7 matched with the clamping block 3-1 is provided on the flat plate of the frame 1-1 of the mobile cart 1. The connection between the telescopic vertical rod 3 and the mobile cart 1 is achieved by clamping the clamping block 3-1 on the clamping groove 1-7.

[0096] The conveying device of the present invention can be regarded as a plurality of conveying units connected at the end or front and back. When connected, the conveying device is extended by hinge points on both sides of the rhombus bracket 5 and the adjacent rhombus bracket 5.

[0097] Each transmission unit Figure 4 As shown, it includes two pairs of symmetrically arranged telescopic upright poles 3 of the transmission unit, a transmission pole 4 and a diamond-shaped bracket 5. The number of the transmission units can be increased or decreased as needed to meet the requirements of the transport length and space. Therefore, the present invention has a flexible structure, a wide range of applications, and has practical promotion value.

[0098] Example 2

[0099] The difference between this embodiment and embodiment 1 is that the structure of the roller is different. Figure 1-6 , 9-16 and Figure 7 , 8 As shown, the roller 14 of the second embodiment includes a bearing 14-1 sleeved on the conveying rod 4, a triangular bracket 14-2 rotatably arranged on the outer periphery of the bearing 14-1, and rotating wheels 14-3 rotatably arranged at three ends of the triangular bracket 14-2. This increases the rotation flexibility of the roller 14 and can better push the goods forward.

[0100] Example 3

[0101] like Figure 18-24As shown, the difference between this embodiment and embodiment 1 is that the structure of the telescopic device is different. The telescopic device of this embodiment is a sliding rod telescopic device, which includes a limit plate 15 arranged on each transmission rod 4 and a limit rod device connecting adjacent limit plates 15. The limit plate 15 is provided with four vertical second roller grooves 15-1, two of which are symmetrically distributed on the upper and lower parts. A pair of limit balls 15-2 are respectively arranged on the upper and lower parts of the second roller grooves 15-1. Each pair of limit balls 15-2 is symmetrically arranged on the second roller grooves 15-1. In the ball grooves 15-5 on both sides, the ball grooves 15-5 are vertically arranged with the second roller groove 15-1, the limiting ball 15-2 is fixed in the ball grooves 15-5 by the second spring 15-3, and the ball grooves 15-5 are arranged on the limiting plate 15; one end of the limiting ball 15-2 is connected with the second spring 15-3, the other end of the limiting ball 15-2 faces the other limiting ball 15-2, and the other end of the second spring 15-3 is fixed in the ball groove 15-5 on the limiting plate 15.

[0102] The limiting rod device comprises two limiting rods 16 , and the centers of the two limiting rods 16 are rotatably connected.

[0103] The two limit rods 16 are cross-arranged, and one end of each limit rod 16 is movably arranged in the second roller groove 15-1 on the upper part of the limit plate 15 on one side of the limit rod 16, and the other end of the limit rod 16 is movably arranged in the second roller groove 15-1 on the lower part of the limit plate 15 on the other side of the limit rod 16. In other words, the two ends of a limit rod 16 are respectively arranged in the second roller groove 15-1 of the limit plate 15 on both sides of the limit rod 1, one above and one below.

[0104] The limiting rod 16 is matched with the second roller groove 15 - 1 , and the limiting ball 15 - 2 is used to limit the limiting rod 16 .

[0105] Further, the two ends of the limiting rod 16 are respectively provided with second rollers 16-1 adapted to the second roller groove 15-1 and the limiting ball 15-2, and the limiting ball 15-2 is used to limit the limiting rod 16. The ends of the limiting rod 16 are respectively rotatably provided with second rollers 16-1, and the second rollers 16-1 are slidably provided in the second roller groove 15-1, and the outer diameter of the second roller is adapted to a pair of symmetrically provided limiting balls 15-2.

[0106] Furthermore, an installation inclined groove 15-4 is provided on the upper part of the limiting plate 15, and the conveying rod 4 is rotatably arranged in the installation inclined groove 15-4; the installation inclined groove 15-4 is inclinedly arranged, and the installation inclined groove 15-4 is located above the second roller groove 15-1.

[0107] When there are no items to be transported on the conveying rod 4, under the elastic force of the spring 7, the conveying rod 4 is located at the top of the mounting inclined groove 15-4. When there are items to be transported on the conveying rod 4, the gravity of the items causes the conveying rod 4 to sink, that is, the conveying rod 4 moves downward in the mounting inclined groove 15-4, which causes the angle formed by the goods and the conveying rod 4 to become smaller, thereby increasing the sliding force of the goods along the downward inclination of the telescopic device, so that the items can be better and more stably carried on the conveying rod 4, thereby improving the transmission quality.

[0108] When the present invention is used, the method of use and the working process refer to Example 1. For the telescopic device, when in use, the conveying device is opened to pull the adjacent telescopic vertical rod 3. At this time, the end of the limiting rod 16 located in the second roller groove 15-1 at the upper part of the limiting plate 15 moves downward. At the same time, the end of the limiting rod 16 located in the second roller groove 15-1 at the lower part of the limiting plate 15 moves upward, and the end of the limiting rod 16 slides in the second roller groove 15-1. Finally, the end of the limiting rod 16 in the second roller groove 15-1 at the upper part of the limiting plate 15 overcomes the spring force, squeezes a pair of limiting balls 15-2 at the lower part of the second roller groove 15-1 to move to both sides away from the limiting rod 16, and then passes through the limiting balls 15-2 at the lower part of the second roller groove 15-1. The limiting balls 15-2 are reset under the action of the spring rebound force, and the limiting rod 16 is limited to fix the limiting rod 16. During the process of opening the conveying device, the end of the limiting rod 16 in the second roller groove 15-1 at the lower part of the limiting plate 15 moves upward, and in the process of moving upward, a pair of limiting balls 15-2 in the upper part of the second roller groove 15-1 are squeezed to move to the two sides away from the limiting rod 16, and then after passing through the limiting balls 15-2 in the upper part of the second roller groove 15-1, the limiting balls 15-2 are reset under the action of the spring rebound force, and the limiting rod 16 is limited, so that the limiting rod 16 is fixed. Similarly, when the device of the present invention is stored, the adjacent telescopic uprights 3 are merged, and at this time, the end of the limiting rod 16 in the second roller groove 15-1 at the upper part of the limiting plate 15 moves upward, and at the same time, the end of the limiting rod 16 in the second roller groove 15-1 at the lower part of the limiting plate 15 moves downward, and finally, after passing through the limiting roller 15-2, it is limited by the limiting balls 15-2.

[0109] Example 4

[0110] The difference between this embodiment and embodiment 3 is that the structure of the roller is different. Figure 18-27 As well as Figure 7 , 8 As shown, the roller 14 of this embodiment 4 includes a bearing 14-1 sleeved on the conveying rod 4, a triangular bracket 14-2 rotatably arranged on the outer periphery of the bearing 14-1, and rotating wheels 14-3 rotatably arranged at three ends of the triangular bracket 14-2. This increases the rotation flexibility of the roller 14 and can better push the goods forward.

[0111] Beneficial effects of the present invention:

[0112] 1. The present invention has a wide range of applications. The number of telescopic uprights can be increased or decreased according to the transportation distance of the items, thereby adjusting the length of the conveying device, thereby overcoming the drawback that the existing conveyor belt transmission mode cannot change the transportation distance.

[0113] 2. The present invention does not require external power when transporting items, and can complete the transportation by relying solely on the gravity of the items being transported, which is more energy-saving and environmentally friendly.

[0114] 3. The structure of the present invention is flexible, and the telescopic device plays the function of merging and opening the present invention. When not in use, the telescopic vertical rods are merged together, and when in use, the telescopic vertical rods are pulled for transportation. Therefore, the present invention is easy to store and can be recycled.

[0115] 4. The conveying device of the present invention is made of flexible material and has a certain curvature as a whole, so it can realize the transportation of goods on curved roads, which is impossible to achieve with existing technologies such as conveyor belts, and has practical significance.

[0116] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cargo unloading device, characterized in that: It comprises a mobile cart (1) and a conveying device; the conveying device comprises two rows of telescopic uprights (3) arranged symmetrically, a conveying rod (4) arranged at intervals between the two rows of telescopic uprights (3), and telescopic devices respectively fixed at both ends of the conveying rod (4) for pulling apart or merging adjacent telescopic uprights (3); the telescopic uprights (3) in each row are arranged at intervals and the number is more than two, the conveying rod (4) is rotatably provided with a roller (14), and the bottom of the telescopic uprights (3) close to the mobile cart (1) in the conveying device is arranged on the mobile cart (1); The telescopic device is a diamond-shaped telescopic device, which comprises a plurality of diamond-shaped brackets (5) connected in sequence and capable of being stretched laterally, each of the diamond-shaped brackets (5) comprising four frame frames and four hinge points for hinge-connecting adjacent frame frames, a transmission rod (4) is provided through the hinge point at the top of each diamond-shaped bracket (5), and the hinge points on both sides of the diamond-shaped bracket (5) are respectively used for hinge connection with the adjacent diamond-shaped brackets (5); a reinforcing rod (2) is provided below each of the transmission rods (4), and the reinforcing rod (2) is fixedly connected to the diamond-shaped bracket (5). on a frame frame of the bracket (5); a first inclined groove (6) is provided at a hinge point at the top of the rhombus bracket (5), the first inclined groove (6) is located on a frame frame at the upper part of the rhombus bracket (5), the transmission rod (4) passes through the first inclined groove (6), and a spring (7) is provided between the transmission rod (4) and the reinforcing rod (2); the rhombus bracket (5) further comprises a V-shaped frame plate (5-1) with a tip facing downward, the top ends of the V-shaped frame plate (5-1) are respectively hinged to two frame frames at the upper part of the rhombus bracket (5); or, The telescopic device is a sliding rod telescopic device, which comprises a limit plate (15) arranged on each transmission rod (4) and a limit rod device connecting adjacent limit plates (15); the limit plate (15) is provided with four vertical second roller grooves (15-1) symmetrically distributed with two upper and two lower parts; the lower part of the upper part of the second roller groove (15-1) is respectively provided with a pair of limit balls (15-2); each pair of limit balls (15-2) is symmetrically arranged in ball grooves (15-5) on both sides of the second roller groove (15-1); the ball grooves (15-5) are arranged perpendicular to the second roller grooves (15-1); the limit balls (15-2) are fixed in the ball grooves (15-5) by second springs (15-3); the limit rod device comprises two limit rods (16) connected by central rotation; the two limit rods (16) are cross-arranged The transmission rod (4) is rotatably arranged in the installation inclined groove (15-4); the installation inclined groove (15-4) is arranged on the upper part of the limit plate (15) on one side of the limit rod (16); one end of each limit rod (16) is movably arranged in a second roller groove (15-1) on the upper part of the limit plate (15) on one side of the limit rod (16); and the other end of the limit rod (16) is movably arranged in the second roller groove (15-1) on the lower part of the limit plate (15) on the other side of the limit rod (16); a mounting inclined groove (15-4) is arranged on the upper part of the limit plate (15); and the transmission rod (4) is rotatably arranged in the mounting inclined groove (15-4); the mounting inclined groove (15-4) is arranged obliquely, and the mounting inclined groove (15-4) is located above the second roller groove (15-1); and second rollers (16-1) adapted to the second roller groove (15-1) and the limiting ball (15-2) are respectively arranged at both ends of the limit rod (16); and the limiting ball (15-2) is used to limit the limit rod (16).

2. A cargo unloading device according to claim 1, characterized in that: A removable telescopic guardrail (8) is provided between two adjacent telescopic upright poles (3), and the telescopic guardrail (8) is located above the transmission rod (4); The telescopic guardrail (8) comprises folding units (9) hinged together in sequence, the number of the folding units (9) is more than two, and each of the folding units (9) comprises two hinged folding plates (9-1) and a rotating wheel (9-2) rotatably arranged between the two folding plates (9-1).

3. A cargo unloading device according to claim 1, characterized in that: A supporting cross bar (10) is also arranged between the two rows of telescopic vertical bars (3), and two ends of the supporting cross bar (10) are respectively arranged on two symmetrically arranged telescopic vertical bars (3).

4. A cargo unloading device according to claim 1, characterized in that: A beam grating (11) is arranged above the transmission rod (4) and close to the position of the mobile cart (1), and the bottom of the beam grating (11) is arranged on two symmetrically arranged telescopic vertical rods (3); The mobile cart (1) is provided with a weighing platform (1-2), an LED screen (1-6), and a power source (1-5) for supplying power to the weighing platform (1-2) and the LED screen (1-6), respectively; the LED screen (1-6) is electrically connected to the opposing grating (11) and the weighing platform (1-2), respectively; The mobile cart (1) comprises an L-shaped vehicle frame (1-1), a cart roller (1-3) with a brake arranged at the bottom of a flat plate of the vehicle frame (1-1), and handles (1-4) and a buffer pad (12) respectively arranged on both sides of a vertical plate of the vehicle frame (1-1); The weighing platform (1-2) is arranged on a flat plate of the vehicle frame (1-1) via a weighing platform telescopic rod; The LED screen (1-6) is arranged on the upper part of the vertical plate of the vehicle frame (1-1) through an LED screen telescopic rod; The vertical plate of the vehicle frame (1-1) and the weighing platform (1-2) are respectively located on two sides of the buffer pad (12).

5. The unloading device according to claim 1, characterized in that: The roller (14) comprises a bearing (14-1) sleeved on the transmission rod (4), a triangular bracket (14-2) rotatably arranged on the outer periphery of the bearing (14-1), and rotating wheels (14-3) rotatably arranged at three ends of the triangular bracket (14-2).

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