Trolley

Abstract

The utility model relates to the technical field of transportation devices, and discloses a cart which comprises a frame body, a first supporting frame and a second supporting frame, and a carrying piece supporting plate is arranged at the bottom of the frame body; the first supporting frame is provided with a first rotating end, the first rotating end is rotationally connected with the first side face of the frame body, and a plurality of first wheels are arranged on the first supporting frame; the second supporting frame is provided with a second rotating end, the second rotating end is rotationally connected with the second side face of the frame body, a plurality of second wheels are arranged on the second supporting frame, and the second supporting frame is in sliding contact with the side, close to the carrying piece supporting plate, of the first supporting frame. The first supporting frame and the second supporting frame are rotated so that the multiple first wheels and the multiple second wheels can press the ground, and the carrying piece supporting plate can be lifted away from the ground. The first side face and the second side face are oppositely arranged. According to the cart, the problem that time and labor are wasted when steel cylinders are transported is solved or improved.

Description

Technical Field

[0001] This application relates to the field of transportation equipment technology, specifically to a trolley. Background Technology

[0002] When testing instruments in the laboratory are used for testing, some detection gases are required, such as argon, nitrogen, and hydrogen. Usually, the laboratory personnel will move the steel cylinders containing the detection gases onto a trolley and then transport the cylinders to the testing instruments.

[0003] Currently, most of the trolleys used in laboratories are ordinary handcarts. Ordinary handcarts have a platform with multiple wheels underneath. When transporting gas cylinders using a handcart, it usually requires two laboratory personnel to move the cylinders onto the cart. During transportation, another laboratory personnel also needs to hold the cylinders by hand, which is time-consuming and laborious. Utility Model Content

[0004] In view of this, this application provides a trolley to solve or improve the problem of time-consuming and laborious transportation of steel cylinders.

[0005] This application provides a trolley, including:

[0006] The frame has a pallet for transporting parts at its bottom;

[0007] A first support frame is provided with a first rotating end, which is rotatably connected to one side of the frame body, and a plurality of first wheels are provided on the first support frame;

[0008] The second support frame is provided with a second rotating end, which is rotatably connected to the other side of the frame. The second support frame is provided with a plurality of second wheels. The second support frame is in sliding contact with the side of the first support frame near the transport pallet. Rotating the first support frame and the second support frame can cause the plurality of first wheels and the plurality of second wheels to press the ground, thereby lifting the transport pallet off the ground.

[0009] In this embodiment, in the initial position, the transport pallet is in contact with the ground, eliminating the need to lift the transport item to a certain height. The operator can easily push the transport item onto the pallet, reducing the difficulty of loading; one operator can complete the loading. Subsequently, the first support frame is rotated towards the transport pallet. The first support frame slides against the second support frame, causing the second support frame to rotate. Based on the lever principle, multiple first wheels on the first support frame and multiple second wheels on the second support frame press down on the ground, lifting the transport pallet off the ground. The operator can then easily move the frame.

[0010] In one optional embodiment, the first support frame includes two first connecting rods, a first connecting rod, and a first connecting part. One end of each of the two first connecting rods is rotatably connected to the frame body, and the other end is connected to both ends of the first connecting rod. A plurality of first wheels are mounted on the two first connecting rods. The second support frame is in sliding contact with the two first connecting rods on the side near the transport piece pallet. The first connecting part is used to connect with the second support frame.

[0011] In one optional embodiment, the second support frame includes two second connecting rods, a second connecting rod, and a second connecting part. One end of each of the two second connecting rods is rotatably connected to the frame body, and the other end is connected to both ends of the second connecting rod. A plurality of second wheels are mounted on the two second connecting rods. The second connecting rod is in sliding contact with the side of the two first connecting rods near the transport piece pallet. The first connecting part is used to connect with the second connecting part.

[0012] In one optional embodiment, the first connecting portion includes:

[0013] A connecting shaft, the two ends of which are rotatably connected to the two first connecting rods respectively;

[0014] Two connecting hooks are fixedly mounted on the connecting shaft, and the two connecting hooks can rotate with the connecting shaft to connect with the second connecting part;

[0015] At least one spring, one end of which is connected to the first connecting rod and the other end of which is connected to the connecting hook, such that the connecting hook tends to approach and connect with the second connecting part.

[0016] In one optional embodiment, the two second connecting rods are provided with through holes corresponding to the two connecting hooks, and a connecting post is provided in each of the two through holes. The connecting hooks can be connected to the connecting posts by passing through the through holes, and the two through holes and the two connecting posts form the second connecting part.

[0017] In an alternative embodiment, a handle is also included, which is mounted on any of the connecting hooks, and when the connecting hooks are connected to the connecting post, the handle passes through the through hole and is located at the bottom of the second connecting rod.

[0018] In one alternative embodiment, the two first links and the two second links are rotatably connected to the frame via hinges.

[0019] In one optional embodiment, a loading and unloading port for transporting parts is provided on one side of the frame, and a support rod for transporting parts is provided on the side opposite to the loading and unloading port for transporting parts.

[0020] And / or, the frame is provided with a trolley handle.

[0021] In one alternative embodiment, a chain is also included, and hooks are provided on both sides of the frame corresponding to the loading and unloading port of the transported item, and the two ends of the chain are detachably connected to the two hooks.

[0022] In one alternative embodiment, a pedal is provided on the first connecting rod. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the operation of a trolley according to an embodiment of this application;

[0025] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0026] Figure 3 for Figure 1 A magnified view of part B in the diagram;

[0027] Figure 4 This is a schematic diagram of a trolley with the chain removed according to an embodiment of this application;

[0028] Figure 5 This is a partial schematic diagram of a trolley according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Frame; 2. Pallet for transporting items; 3. First support frame; 301. First connecting rod; 302. First connecting rod; 303. First connecting part; 3031. Connecting shaft; 3032. Connecting hook; 3033. Spring; 4. First wheel; 5. Second support frame; 501. Second connecting rod; 502. Second connecting rod; 503. Second connecting part; 5031. Connecting column; 6. Second wheel; 7. Handle; 8. Hinge; 9. Support rod for transporting items; 10. Cart handle; 11. Chain; 12. Pedal; 13. Transporting item. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] When testing instruments in the laboratory are used for testing, some detection gases are required, such as argon, nitrogen, and hydrogen. Usually, the laboratory personnel will move the steel cylinders containing the detection gases onto a trolley and then transport the cylinders to the testing instruments.

[0033] Currently, most trolleys used in laboratories are ordinary handcarts. These handcarts have a platform with multiple wheels underneath. When transporting gas cylinders using these handcarts, it generally requires two lab personnel to lift the cylinders onto the cart, and another person needs to hold the cylinders during transport, which is time-consuming and laborious. Therefore, this application provides a trolley.

[0034] The following is combined with Figures 1 to 5 This describes an embodiment of the present application.

[0035] According to an embodiment of this application, a trolley is provided, including: a frame 1, a first support frame 3, and a second support frame 5.

[0036] Specifically, a transport component tray 2 is provided at the bottom of the frame 1;

[0037] The first support frame 3 is provided with a first rotating end, which is rotatably connected to one side of the frame 1. The first support frame 3 is provided with a plurality of first wheels 4.

[0038] The second support frame 5 is provided with a second rotating end, which is rotatably connected to the other side of the frame 1. The second support frame 5 is provided with multiple second wheels 6. The second support frame 5 is in sliding contact with the side of the first support frame 3 near the transport pallet 2. Rotating the first support frame 3 and the second support frame 5 can cause multiple first wheels 4 and multiple second wheels 6 to press the ground, so as to lift the transport pallet 2 off the ground.

[0039] In this embodiment, such as Figure 1 and Figure 5As shown, in the initial position, the transport pallet 2 is in contact with the ground. It is not necessary to lift the transport component 13 to a certain height. The experimenter can easily push the transport component 13 onto the transport pallet 2, reducing the difficulty of loading; one experimenter can complete the loading. Then, the first support frame 3 is rotated, causing it to rotate closer to the transport pallet 2. The first support frame 3 slides against the second support frame 5, thereby causing the second support frame 5 to rotate. According to the lever principle, the multiple first wheels 4 on the first support frame 3 and the multiple second wheels 6 on the second support frame 5 press down on the ground, lifting the transport pallet 2 off the ground. The experimenter can then easily push the frame 1 to move.

[0040] Specifically, such as Figure 5 As shown, the second support frame 5 is slidably connected to the first support frame 3 on the side near the transport pallet 2. The first support frame 3 is pressed towards the transport pallet 2, and the first support frame 3 and the second support frame 5 rotate. Multiple first wheels 4 and multiple second wheels 6 press down on the ground, lifting the transport pallet 2 off the ground.

[0041] Specifically, the first support frame 3 and the second support frame 5 are arranged opposite to each other.

[0042] In one specific embodiment, the second support frame 5 is provided with rollers, which roll against the first support frame 3 to achieve a sliding connection between the first support frame 3 and the second support frame 5.

[0043] Specifically, such as Figure 5 As shown, the second support frame 5 slides against the side of the first support frame 3 near the transport pallet 2, pressing the first support frame 3 towards the transport pallet 2. The first support frame 3 and the second support frame 5 rotate, and multiple first wheels 4 and multiple second wheels 6 press down on the ground, lifting the transport pallet 2 off the ground.

[0044] Specifically, such as Figure 1 As shown, the frame 1 is a rectangular frame, and the transport component pallet 2 is installed at the bottom of the frame 1. The transport component pallet 2 can abut against the ground, making it easy to push the transport component 13 onto the transport component pallet 2.

[0045] Specifically, such as Figure 5 As shown, the first support frame 3 is provided with two first wheels 4, which are arranged on both sides of the first support frame 3 along the width direction of the frame 1. The second support frame 5 is provided with two second wheels 6, which are arranged on both sides of the second support frame 5 along the width direction of the frame 1. The first wheels 4 and the second wheels 6 are arranged along the length direction of the frame 1.

[0046] Specifically, the multiple first wheels 4 and the multiple second wheels 6 are all omnidirectional wheels.

[0047] In one embodiment, such as Figure 5 As shown, the first support frame 3 includes two first connecting rods 301, a first connecting rod 302, and a first connecting part 303. One end of each of the two first connecting rods 301 is rotatably connected to the frame body 1, and the other end is connected to both ends of the first connecting rod 302. Multiple first wheels 4 are mounted on the two first connecting rods 301. The second support frame 5 is in sliding contact with the two first connecting rods 301 on the side near the transport piece pallet 2. The first connecting part 303 is used to connect with the second support frame 5.

[0048] In this embodiment, such as Figure 5 As shown, two first connecting rods 301 are rotatably connected to the frame 1, and multiple first wheels 4 are mounted on the two first connecting rods 301. The two ends of the first connecting rod 302 are connected to the two first connecting rods 301 to enhance the strength of the first support frame 3.

[0049] Specifically, such as Figure 5 As shown, there are two first wheels 4, which are respectively mounted on two first connecting rods 301. The two first connecting rods 301 are connected to the first connecting rod 302. The first support frame 3 is a first U-shaped frame, which facilitates the rotation of the first support frame 3.

[0050] In one embodiment, such as Figure 5 As shown, the second support frame 5 includes two second connecting rods 501, a second connecting rod 502, and a second connecting part 503. One end of each of the two second connecting rods 501 is rotatably connected to the frame 1, and the other end is connected to both ends of the second connecting rod 502. Multiple second wheels 6 are mounted on the two second connecting rods 501. The second connecting rod 502 slides in contact with the side of the two first connecting rods 301 near the transport piece pallet 2. The first connecting part 303 is used to connect with the second connecting part 503.

[0051] In this embodiment, such as Figure 3 and Figure 5 As shown, two second connecting rods 501 are rotatably connected to the frame 1, and multiple second wheels 6 are mounted on the two second connecting rods 501. The two ends of the second connecting rod 502 are connected to the two second connecting rods 501 to enhance the strength of the second support frame 5.

[0052] Specifically, such as Figure 5 As shown, there are two second wheels 6, which are respectively mounted on two second connecting rods 501. The two second connecting rods 501 are connected to the second connecting rod 502. The second support frame 5 is a second U-shaped frame.

[0053] Specifically, such as Figure 5As shown, the openings of the first U-shaped frame and the second U-shaped frame face opposite directions. The two first connecting rods 301 are slidably connected to the second connecting rod 502. Pressing the first connecting rod 302 causes the two first connecting rods 301 to rotate. The two first connecting rods 301 press the second connecting rod 502, causing the two second connecting rods 501 to rotate. Through the lever principle, the two first wheels 4 and the two second wheels 6 are pressed down, lifting the frame 1 as a whole upward and pushing the frame 1 to move, thereby moving the transport component 13.

[0054] In one embodiment, such as Figure 2 As shown, the first connecting part 303 includes: a connecting shaft 3031, two connecting hooks 3032 and at least one spring 3033;

[0055] Specifically, the two ends of the connecting shaft 3031 are rotatably connected to the two first connecting rods 301 respectively;

[0056] Two connecting hooks 3032 are fixedly mounted on the connecting shaft 3031, and the two connecting hooks 3032 can rotate with the connecting shaft 3031 to connect with the second connecting part 503;

[0057] One end of the spring 3033 is connected to the first connecting rod 301, and the other end is connected to the connecting hook 3032, so that the connecting hook 3032 tends to approach and connect with the second connecting part 503.

[0058] In this embodiment, such as Figure 5 As shown, when the first connecting rod 302 is pressed down, the two first connecting rods 301 rotate. Under the action of the spring 3033, the connecting hook 3032 moves close to the second connecting part 503. The two connecting hooks 3032 are connected to the second connecting part 503, connecting the first support frame 3 and the second support frame 5, so that the transport pallet 2 is in a state of being lifted by the first wheel 4 and the second wheel 6, which makes it easier for the experimenter to push the frame 1.

[0059] The two connecting hooks 3032 are connected to the second connecting part 503, making it more stable.

[0060] Specifically, there can be two springs 3033, which correspond to the two second links 501. One end of each spring 3033 is connected to the two second links 501, and the other end is connected to the two connecting hooks 3032. The two springs 3033 are always in a compressed state.

[0061] Specifically, both first connecting rods 301 are provided with mounting holes, and the two ends of the first connecting rod 302 are rotatably connected to the two mounting holes.

[0062] In one embodiment, the two second connecting rods 501 are provided with through holes corresponding to the two connecting hooks 3032, and each of the two through holes is provided with a connecting post 5031. The connecting hooks 3032 can be connected to the connecting posts 5031 by passing through the through holes. The two through holes and the two connecting posts 5031 form the second connecting part 503.

[0063] In this embodiment, rotating the two first connecting rods 301 causes the two connecting hooks 3032 to move and pass into the through hole. The hook body of the connecting hook 3032 slides against the connecting post 5031, and the spring 3033 is compressed. When the first connecting rod 301 rotates to a certain angle, under the action of the spring 3033, the connecting hook 3032 hooks onto the connecting post 5031, connecting the first support frame 3 and the second support frame 5, so that the transport pallet 2 is in a state of being lifted by the first wheel 4 and the second wheel 6, which makes it convenient for the experimenter to push the frame 1.

[0064] Specifically, such as Figure 2 As shown, the bottom of the connecting hook 3032 is provided with an inclined surface, which slides against the connecting post 5031. During the process of the connecting hook 3032 passing through the through hole, the connecting post 5031 pushes the inclined surface in the direction of the spring 3033's contraction. The spring 3033 contracts and stores force. When the connecting post 5031 exceeds the height of the inclined surface, the connecting hook 3032 is connected to the connecting post 5031 under the action of the spring 3033.

[0065] Specifically, such as Figure 2 As shown, the two first connecting rods 301, the first connecting rod 302, the two second connecting rods 501 and the second connecting rod 502 are square rods. The bottom of the two first connecting rods 302 is provided with a step. When the connecting hook 3032 is connected to the connecting post 5031, the upper surface of the second connecting rod 501 abuts against the step to improve the connection strength.

[0066] In one embodiment, such as Figure 2 As shown, it also includes a handle 7, which is installed on any of the connecting hooks 3032. When the connecting hooks 3032 are connected to the connecting post 5031, the handle 7 passes through the through hole at the bottom of the second connecting rod 501.

[0067] In this embodiment, the handle 7 is located at the bottom of the second link 501. After the worker transports the transport component 13 to the designated position, he moves the handle 7, which drives the connecting hook 3032 to rotate, disengaging the connecting hook 3032 from the connecting column 5031. Under the gravity of the transport component 13 and the frame 1, the frame 1 moves downward until the transport component 13 contacts the ground. The worker then unloads the transport component 13 from the transport component pallet 2.

[0068] Specifically, there is a movable gap between the connecting hook 3032 and the through hole, and the connecting hook 3032 can rotate with the connecting shaft 3031 to connect with or disconnect from the connecting post 5031.

[0069] In one embodiment, such as Figure 3 As shown, the two first links 301 and the two second links 501 are rotatably connected to the frame 1 via hinges 8.

[0070] The first link 301 and the second link 501 are connected to the frame 1 via hinge 8, which has a simple structure and is easy to install.

[0071] In one embodiment, such as Figure 1 As shown, a loading and unloading port for transporting parts is provided on one side of the frame 1, and a support rod 9 for transporting parts is provided on the side opposite to the loading and unloading port for transporting parts.

[0072] And / or, a trolley handle 10 is provided on the frame 1.

[0073] In this embodiment, the experimenter loads the transport component 13 onto the transport component pallet 2 through the transport component loading / unloading port, and the transport component support rod 9 supports the transport component 13, improving the stability of the transport component 13 mounted on the frame 1. The experimenter holds the trolley handle 10 for easy pushing of the frame 1.

[0074] Specifically, the opening of the first U-shaped frame corresponds to the loading and unloading port of the transported items, and does not affect the loading and unloading of the transported items 13.

[0075] Specifically, multiple transport component support rods 9 are installed along the height direction of the frame 1.

[0076] Specifically, the transport component support rod 9 is located on the side of the first connecting rod 302 near the transport component loading and unloading port to prevent the transport component 13 from contacting the first connecting rod 302 and avoid affecting the movement of the first connecting rod 302 with the first connecting rod 301.

[0077] In one embodiment, such as Figure 1 As shown, it also includes a chain 11. Hooks are provided on both sides of the frame 1 corresponding to the loading and unloading port of the transported items. The two ends of the chain 11 are detachably connected to the two hooks.

[0078] In this embodiment, it is prevented that the transport component 13 falls off the transport component loading and unloading port during transportation.

[0079] In one embodiment, a pedal 12 is provided on the first connecting rod 302.

[0080] In this embodiment, when the transport component 13 is transported onto the transport component pallet 2, the foot pedal 12 is pressed down to press down the first connecting rod 302. The first connecting rod 302 drives the two first connecting rods 301 to rotate. The two first connecting rods 301 press down on the second connecting rod 502. The second connecting rod 502 drives the two second connecting rods 501 to rotate. Multiple first wheels 4 and multiple second wheels 6 lift the transport component pallet 2. By pressing the foot pedal 12, it is more labor-saving.

[0081] The following is an example, combined with Figures 1 to 5 A comprehensive explanation of all the above-mentioned plans is provided.

[0082] The gas cylinders in the laboratory are used as transport components 13. The frame 1 is pushed next to the cylinders, and the handle 7 is moved to detach the connecting hook 3032 from the connecting column 5031. Under the gravity of the frame 1, the transport component pallet 2 moves downward and comes into contact with the ground.

[0083] The experimenters pushed the gas cylinder onto the transporter pallet 2 and connected both ends of the chain 11 to two hooks to prevent the gas cylinder from falling from the transporter loading and unloading port.

[0084] The experimenter steps on pedal 12 and presses down on the first connecting rod 302. The first connecting rod 302 drives the two first connecting rods 301 to rotate. The two first connecting rods 301 press down on the second connecting rod 502. The second connecting rod 502 drives the two second connecting rods 501 to rotate. Multiple first wheels 4 and multiple second wheels 6 lift the transport pallet 2.

[0085] Two connecting hooks 3032 move into the through hole along with the two first connecting rods 301. The hook body of the connecting hook 3032 slides against the connecting post 5031, and the spring 3033 is compressed. When the first connecting rod 301 rotates to a certain angle, under the action of the spring 3033, the connecting hook 3032 hooks onto the connecting post 5031, connecting the first support frame 3 and the second support frame 5, so that the transport pallet 2 is in a state of being lifted by the first wheel 4 and the second wheel 6, which makes it convenient for the experimenter to push the frame 1.

[0086] The bottom of the connecting hook 3032 is provided with an inclined surface, which slides against the connecting post 5031. During the process of the connecting hook 3032 passing through the through hole, the connecting post 5031 pushes the inclined surface in the direction of the spring 3033's contraction. The spring 3033 contracts and stores force. When the connecting post 5031 exceeds the height of the inclined surface, the connecting hook 3032 is connected to the connecting post 5031 under the action of the spring 3033.

[0087] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended application.

Claims

1. A trolley, characterized in that, include: The frame (1) has a transport component tray (2) at its bottom; The first support frame (3) is provided with a first rotating end, which is rotatably connected to one side of the frame (1). The first support frame (3) is provided with a plurality of first wheels (4). The second support frame (5) is provided with a second rotating end, which is rotatably connected to the other side of the frame (1). The second support frame (5) is provided with a plurality of second wheels (6). The second support frame (5) slides in contact with the side of the first support frame (3) near the transport pallet (2). Rotating the first support frame (3) and the second support frame (5) can cause the plurality of first wheels (4) and the plurality of second wheels (6) to press the ground, thereby lifting the transport pallet (2) off the ground.

2. The trolley according to claim 1, characterized in that, The first support frame (3) includes two first connecting rods (301), a first connecting rod (302), and a first connecting part (303). One end of each of the two first connecting rods (301) is rotatably connected to the frame (1), and the other end is connected to both ends of the first connecting rod (302). A plurality of first wheels (4) are mounted on the two first connecting rods (301). The second support frame (5) is in sliding contact with the two first connecting rods (301) on the side near the transport piece pallet (2). The first connecting part (303) is used to connect with the second support frame (5).

3. The trolley according to claim 2, characterized in that, The second support frame (5) includes two second connecting rods (501), a second connecting rod (502), and a second connecting part (503). One end of each of the two second connecting rods (501) is rotatably connected to the frame (1), and the other end is connected to both ends of the second connecting rod (502). A plurality of second wheels (6) are mounted on the two second connecting rods (501). The second connecting rod (502) slides in contact with the two first connecting rods (301) on the side near the transport pallet (2). The first connecting part (303) is used to connect with the second connecting part (503).

4. The trolley according to claim 3, characterized in that, The first connecting part (303) includes: The connecting shaft (3031) is rotatably connected at both ends to the two first connecting rods (301); Two connecting hooks (3032) are fixedly mounted on the connecting shaft (3031), and the two connecting hooks (3032) can rotate with the connecting shaft (3031) to connect with the second connecting part (503); At least one spring (3033), one end of which is connected to the first connecting rod (301) and the other end of which is connected to the connecting hook (3032) so that the connecting hook (3032) tends to approach and connect to the second connecting part (503).

5. The trolley according to claim 4, characterized in that, The two second connecting rods (501) are provided with through holes corresponding to the two connecting hooks (3032), and each of the two through holes is provided with a connecting post (5031). The connecting hook (3032) can be connected to the connecting post (5031) by passing through the through hole. The two through holes and the two connecting posts (5031) form the second connecting part (503).

6. The trolley according to claim 5, characterized in that, It also includes a handle (7), which is installed on any of the connecting hooks (3032). When the connecting hooks (3032) are connected to the connecting post (5031), the handle (7) passes through the through hole and is located at the bottom of the second connecting rod (501).

7. The trolley according to claim 3, characterized in that, The two first links (301) and the two second links (501) are rotatably connected to the frame (1) via hinges (8).

8. The stroller according to any one of claims 1 to 7, characterized in that, The frame (1) is provided with a loading and unloading port for a transport component (13) on one side, and a transport component support rod (9) is provided on the side opposite to the loading and unloading port for the transport component (13). And / or, the frame (1) is provided with a trolley handle (10).

9. The trolley according to claim 8, characterized in that, It also includes a chain (11), and the frame (1) is provided with hooks on both sides corresponding to the loading and unloading port of the transport component (13), and the two ends of the chain (11) are detachably connected to the two hooks.

10. The trolley according to claim 2, characterized in that, A pedal (12) is provided on the first connecting rod (302).

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