Wheeled container and material conveying system for pipeline transportation

Abstract

The embodiments of the present invention provide a wheeled container and a material conveying system for pipeline transportation, which relate to the field of logistics. The wheeled container for pipeline transportation includes a barrel body with an opening at the top and a cover body for covering the barrel body, a plurality of first rollers are installed at the bottom of the barrel body, and a plurality of second rollers are installed at the top of the cover body. By installing a plurality of first rollers and a plurality of second rollers at the bottom of the barrel body and the top of the cover body respectively, hard friction between the container itself and the inner wall of the pipeline can be effectively avoided, and samples of larger weight (such as 2 to 12 kilograms) can be simply and smoothly transported, reducing labor costs, operating vehicle costs, improving sample delivery efficiency, and improving the benefits of the enterprise.

Description

Technical Field

[0001] The invention relates to the field of logistics, and in particular to a wheeled container and a material conveying system for pipeline transportation. Background Art

[0002] The raw material pipeline transportation system is widely used in steel mills, power plants, chemical companies, port terminals, etc. It uses pneumatic transportation to provide power and places the transportation container in a pipeline with both ends closed for transportation.

[0003] Existing pipeline transport containers are unable to transport laboratory samples weighing more than 2 kg. The main reason is that when the weight of the transported sample is greater than 2 kg, the volume and weight of the container will increase, resulting in greater friction between the container and the pipeline, making operation difficult. The final result is: (1) The transportation speed is slow or it cannot be transported; (2) The sample bottle is seriously damaged; (3) The opening and closing of the sample bottle cap will also become a problem. When the operator is alone, it is impossible to open the sample bottle cap smoothly.

[0004] Therefore, at present, when users transport samples weighing more than 2 kilograms, they basically use manual carts or cars for transportation. The time required for sample delivery is long, the efficiency is low, the cost is high, and there is a risk of human interference. Summary of the invention

[0005] The object of the present invention is to provide a wheeled container and a material conveying system for pipeline transportation, aiming to avoid hard friction between the container itself and the inner wall of the pipeline and significantly increase the sample delivery volume.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides a wheeled container for pipeline transportation, comprising a barrel body with an opening at the top and a cover body for covering the barrel body, a plurality of first rollers are installed at the bottom of the barrel body, a plurality of second rollers are installed at the top of the cover body, the bottom end of the first roller is lower than the bottom of the barrel body, and the top end of the second roller is higher than the top of the cover body.

[0008] In an optional embodiment, a first wheel frame is installed at the bottom of the barrel, and a plurality of first rollers are installed on the first wheel frame;

[0009] A second wheel frame is installed on the top of the cover body, and a plurality of second rollers are installed on the second wheel frame.

[0010] In an optional embodiment, the first wheel frame and the second wheel frame both include a cylindrical intermediate shaft and a plurality of mounting plates arranged on the intermediate shaft, the plurality of mounting plates are distributed at intervals along the circumference of the intermediate shaft, and each mounting plate is connected to a first roller or a second roller.

[0011] In an optional embodiment, the intermediate shaft on the second wheel frame includes a first shaft segment and a second shaft segment, the diameter of the first shaft segment is larger than the second shaft segment, the first shaft segment is mounted on the cover body and matches the size of the cover body, multiple mounting plates are mounted on the second shaft segment, and the diameter of the second roller is larger than the height of the second shaft segment.

[0012] In an optional embodiment, a buffer pad is provided on the top of the second shaft segment on the second wheel frame, and the top of the buffer pad is lower than the top of the second roller.

[0013] In an optional embodiment, a pressing sleeve is further included, and a receiving hole for receiving the pressing sleeve is provided on the intermediate shaft and the cover body, and the shapes of the receiving holes on the intermediate shaft and the cover body match the shape of the pressing sleeve;

[0014] The receiving hole on the intermediate shaft passes through the intermediate shaft from the axial direction, and the pressing sleeve includes a cylindrical section, a conical section and a convex section arranged from top to bottom. The diameter of the conical section gradually increases from top to bottom. The convex section is cylindrical, and the diameter of the convex section is larger than the diameter of the bottom end of the conical section. The top of the cylindrical section is located in the receiving hole on the intermediate shaft, and the convex section is located in the cover body. The height of the portion of the receiving hole corresponding to the size of the convex section is larger than the height of the convex section, so that the pressing sleeve can move in the height direction;

[0015] A pressing protrusion is arranged on the top of the cover body, a receiving cavity for receiving the pressing protrusion is arranged in the pressing sleeve, a first spring is sleeved on the pressing protrusion, the top end of the first spring abuts against the top wall of the receiving cavity, and the bottom end abuts against the top of the cover body;

[0016] A plurality of abutting members are embedded in the cover body, and a locking sleeve is provided on the side wall of the cover body for keeping the cover body in an open or locked state. A plurality of embedding notches are provided on the locking sleeve. When the pressing sleeve is in a non-pressing state, one end of the abutting member abuts against the conical section of the pressing sleeve, and the other end is embedded in the embedding notch on the locking sleeve. A second spring is also provided in the cover body for pressing the conical section against the abutting member.

[0017] In an optional embodiment, the accommodating cavity on the pressing sleeve includes a top cylindrical segment and a bottom cylindrical segment, the inner diameter of the bottom cylindrical segment is larger than the inner diameter of the top cylindrical segment, the top cylindrical segment matches the shape of the pressing protrusion, and a columnar structure matching the bottom cylindrical segment is formed on the cover body, the top end of the first spring abuts against the top wall of the accommodating cavity, and the bottom end abuts against the top of the columnar structure.

[0018] In an optional embodiment, the abutment member includes a first column segment and a second column segment having a diameter smaller than that of the first column segment, the ends of the first column segment and the second column segment are both arc-shaped transitions, and the end of the second column segment is used to be embedded in the embedding notch on the locking sleeve;

[0019] When the pressing sleeve is in a non-pressing state, one end of the first column segment abuts against the conical section of the pressing sleeve, and an adjustment gap is formed between the other end and the inner cavity wall of the cover body for embedding the abutting piece. The second spring is located in the adjustment gap, and the second spring is sleeved on a portion of the second column segment close to one end of the first column segment, so that when the pressing sleeve is in a pressing state, the pressure applied by the second spring to the first column segment causes the end of the second column segment to disengage from the embedding notch.

[0020] In an optional embodiment, a buffer seat is provided at the bottom of the barrel body, and the bottom of the buffer seat is higher than the bottom of the first roller.

[0021] In a second aspect, the present invention provides a material conveying system, comprising the wheeled container of any one of the aforementioned embodiments.

[0022] The beneficial effects of the embodiments of the present invention are as follows: by respectively installing a plurality of first rollers and a plurality of second rollers on the bottom of the barrel body and the top of the cover body, hard friction between the container itself and the inner wall of the pipeline can be effectively avoided, and samples of larger weight (such as 2 to 12 kilograms) can be simply and smoothly transported, thereby reducing labor costs and vehicle operating costs, improving sample delivery efficiency, and enhancing the benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A first structural schematic diagram of a wheeled container provided by an embodiment of the present invention;

[0025] Figure 2 A second structural schematic diagram of a wheeled container provided by an embodiment of the present invention;

[0026] Figure 3 A cross-sectional view of a wheeled container provided by an embodiment of the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of zone IV.

[0028] Icons: 100-wheeled container; 001-accommodation hole; 110-barrel body; 111-locking sleeve; 112-embedded notch; 120-cover body; 121-pressing protrusion; 122-columnar structure; 131-first roller; 132-first wheel frame; 141-second roller; 142-second wheel frame; 143-intermediate shaft; 1431-first shaft segment; 1432-second shaft segment; 144 -mounting plate; 150-buffer pad; 160-pressing sleeve; 161-cylindrical section; 162-conical section; 163-convex section; 164-accommodating chamber; 1641-top cylindrical section; 1642-bottom cylindrical section; 165-first spring; 170-supporting member; 171-second spring; 172-first column section; 173-second column section; 174-adjusting gap; 180-buffer seat. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0034] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0035] Please refer to Figure 1 and Figure 2 This embodiment provides a wheeled container 100 for pipeline transportation, comprising a barrel body 110 with an opening at the top and a cover body 120 for covering the barrel body 110, a plurality of first rollers 131 are installed at the bottom of the barrel body 110, and a plurality of second rollers 141 are installed at the top of the cover body 120. The bottom end of the first roller 131 is lower than the bottom of the barrel body 110, and the top end of the second roller 141 is higher than the top of the cover body 120, so that the wheeled container 100 can roll on the inner wall of the pipeline through the first rollers 131 and the second rollers 141.

[0036] It should be noted that by installing multiple first rollers 131 and multiple second rollers 141 on the bottom of the barrel body 110 and the top of the cover body 120 respectively, hard friction between the container itself and the inner wall of the pipeline can be effectively avoided, and samples of larger weight (such as 2 to 12 kilograms) can be transported simply and smoothly, reducing labor costs and vehicle operating costs, improving sample delivery efficiency, and enhancing the benefits of the enterprise.

[0037] Specifically, the size of the barrel 110 is not limited, and it can be transported in a pipeline. It is a hollow cylindrical structure, and the barrel 110 is used to load the sample to be transported. The outer diameter of the cover 120 is roughly consistent with the inner diameter of the barrel 110, and the cover 120 can be manually closed or opened to seal the barrel 110.

[0038] In an optional embodiment, a first wheel frame 132 is installed at the bottom of the barrel body 110, and the plurality of first rollers 131 are installed on the first wheel frame 132; a second wheel frame 142 is installed at the top of the cover body 120, and the plurality of second rollers 141 are installed on the second wheel frame 142. In this way, the rollers are fixed by respectively installing the first wheel frame 132 and the second wheel frame 142 at the bottom of the barrel body 110 and the top of the cover body 120, and the stability of the structure is good.

[0039] Specifically, the specific number of the first roller 131 and the second roller 141 is not limited, preferably greater than or equal to 3, and can be 3, 4, 5, 6, 7, 8, etc. The first roller 131 and the second roller 141 can make the container run at high speed in the pipeline like the wheels of a car. Since the horizontal position of the container is in an uncertain state during transportation, the top and the bottom may contact the pipe wall, so the first roller 131 and the second roller 141 need to cooperate, and finally realize the rapid delivery of the required sample to the place where the sample is required for testing.

[0040] Furthermore, the first wheel frame 132 and the second wheel frame 142 both include a cylindrical intermediate shaft 143 and a plurality of mounting plates 144 disposed on the intermediate shaft 143, the plurality of mounting plates 144 are spaced apart along the circumference of the intermediate shaft 143, and each mounting plate 144 is connected to a first roller 131 or a second roller 141. Specifically, the structures of the first wheel frame 132 and the second wheel frame 142 are substantially the same, both of which are provided with mounting plates 144 on the intermediate shaft 143, and the rotating shaft is fixed by opening holes in the mounting plates 144, and then the rollers are installed.

[0041] In an optional embodiment, the intermediate shaft 143 on the second wheel frame 142 includes a first shaft segment 1431 and a second shaft segment 1432. The diameter of the first shaft segment 1431 is larger than that of the second shaft segment 1432. The first shaft segment 1431 is mounted on the cover body 120 and matches the size of the cover body 120. The plurality of mounting plates 144 are all mounted on the second shaft segment 1432. The diameter of the second roller 141 is larger than the height of the second shaft segment 1432. In this way, the top of the second roller 141 is the highest point of the structure, which is convenient for contacting and sliding with the pipeline. The second roller 141 is located on the first shaft segment 1431 to play a supporting role.

[0042] Similarly, the structure of the first wheel frame 132 is similar to that of the second wheel frame 142, and can also be divided into two shaft body sections, with the shaft body section with a larger size being used to provide support. The entire device has good operating stability.

[0043] Specifically, the middle shaft 143 and the cover body 120 have corresponding axes, the first shaft segment 1431 has substantially the same size as the cover body 120 and is fitted and fixed on the cover body 120 , and the second shaft segment 1432 is coaxial with the first shaft segment 1431 .

[0044] In order to provide a better buffering effect during the falling process, a buffer seat 180 is provided at the bottom of the barrel 110, and the bottom of the buffer seat 180 is higher than the bottom of the first roller 131. A buffer pad 150 is provided at the top of the second shaft section 1432 on the second wheel frame 142, and the top of the buffer pad 150 is lower than the top of the second roller 141. In this way, both ends of the container can provide a good buffering effect during the falling process, and the provision of the buffer seat 180 can prevent the container from tipping over when placed.

[0045] Specifically, the buffer seat 180 and the buffer pad 150 can be fixed by screws, and the material thereof is not limited and can be rubber or the like.

[0046] In order to facilitate the opening and locking of the cover 120, the structures of the second wheel frame 142 and the cover 120 are further improved, so that the cover 120 is in a locked state when not pressed, and in an openable state when pressed. The details are as follows:

[0047] Please refer to Figure 3 and Figure 4 The wheeled container 100 further includes a pressing sleeve 160. The intermediate shaft 143 and the cover body 120 are both provided with a receiving hole 001 for receiving the pressing sleeve 160. The shapes of the receiving holes 001 on the intermediate shaft 143 and the cover body 120 match the shape of the pressing sleeve 160. The receiving hole 001 on the intermediate shaft 143 axially penetrates the intermediate shaft 143. The pressing sleeve 160 includes a cylindrical section 161, a conical section 162 and a convex section 163 arranged from top to bottom. The conical section 162 The diameter increases gradually from top to bottom, the raised section 163 is columnar, and the diameter of the raised section 163 is larger than the diameter of the bottom end of the conical section 162, the top of the cylindrical section 161 is located in the accommodating hole 001 on the intermediate shaft 143, the raised section 163 is located in the cover body 120, and the height of the portion of the accommodating hole 001 corresponding to the size of the raised section 163 is larger than the height of the raised section 163, so that the pressing sleeve 160 can move in the height direction and is in a relatively fixed state in the horizontal direction.

[0048] The top of the cover body 120 is provided with a pressing protrusion 121, and the pressing sleeve 160 is provided with a receiving cavity 164 for receiving the pressing protrusion 121. The pressing protrusion 121 is sleeved with a first spring 165, and the top end of the first spring 165 abuts against the top wall of the receiving cavity 164, and the bottom end abuts against the top of the cover body 120. In this way, by pressing the pressing sleeve 160 from the receiving hole 001 on the intermediate shaft 143, the first spring 165 is further contracted, and the pressing sleeve 160 moves downward as a whole, and the width occupied by the pressing sleeve 160 at the same horizontal position is adjusted by the tapered section 162, and the width occupied by the tapered section 162 at the same horizontal position becomes smaller before and after pressing.

[0049] A plurality of abutting members 170 are embedded in the cover body 120, and a locking sleeve 111 is provided on the side wall of the cover body 120 for keeping the cover body 120 in an open or locked state. A plurality of embedding notches 112 are provided on the locking sleeve 111. When the pressing sleeve 160 is in a non-pressing state, one end of the abutting member 170 abuts against the conical section 162 of the pressing sleeve 160, and the other end is embedded in the embedding notch 112 on the locking sleeve 111. A second spring 171 is also provided in the cover body 120 for pressing the abutting member 170 against the conical section 162. In this way, when the pressing sleeve 160 is pressed, the pressing sleeve 160 moves downward as a whole, and the width of the position where it abuts against the supporting member 170 becomes narrower. The second spring 171 applies pressure to the supporting member 170, causing the supporting member 170 to move horizontally, thereby causing the end of the supporting member 170 to move out of the embedded notch 112, and the cover body 120 can be opened manually.

[0050] Specifically, the abutting members 170 are arranged in the cover body 120 at intervals in the circumferential direction, and the specific number is not limited. The locking sleeve 111 is sleeved on the barrel body 110 and can be fixed by welding or other methods. The size of the embedded notch 112 is small, so that the abutting member 170 can be easily separated from it.

[0051] In order to increase the stability of the operation of the pressing sleeve 160, the accommodating cavity 164 on the pressing sleeve 160 includes a top columnar section 1641 and a bottom columnar section 1642. The inner diameter of the bottom columnar section 1642 is larger than that of the top columnar section 1641. The top columnar section 1641 matches the shape of the pressing protrusion 121. The cover body 120 forms a columnar structure 122 matching the bottom columnar section 1642. The top end of the first spring 165 abuts against the top wall of the accommodating cavity 164, and the bottom end abuts against the top of the columnar structure 122. In the non-pressing state, the pressing sleeve 160 is locked by the inner cavity wall of the cover body 120 due to the protruding section 163. The first spring 165 is in a state of being compressed by the pressing sleeve 160. The two-section accommodating cavity 164 cooperates with the structure of the cover body 120 to ensure stable support and relatively stable movement when pressed.

[0052] In an optional embodiment, the supporting member 170 includes a first column segment 172 and a second column segment 173 with a diameter smaller than that of the first column segment 172. The ends of the first column segment 172 and the second column segment 173 are both arc-shaped transitions, and the end of the second column segment 173 is used to embed into the embedding notch 112 on the locking sleeve 111; when the pressing sleeve 160 is in a non-pressing state, one end of the first column segment 172 abuts against the conical segment 162 of the pressing sleeve 160, and an adjustment gap 174 is formed between the other end and the inner cavity wall in the cover body 120 for embedding the supporting member 170, and the second spring 171 is located in the adjustment gap 174, and the second spring 171 is sleeved on the portion of the second column segment 173 close to one end of the first column segment 172. When the pressing sleeve 160 is in the pressing state, its tapered section 162 moves downward and loses its abutment against the first column section 172 . The pressure exerted by the second spring 171 on the first column section 172 causes the end of the second column section 173 to disengage from the embedding notch 112 .

[0053] Specifically, the size of the embedding notch 112 is very small, less than or equal to the distance that the first column segment 172 can move when the pressing sleeve 160 moves downward, so as to ensure that the end of the second column segment 173 is smoothly separated from the embedding notch 112.

[0054] The embodiment of the present invention further provides a material conveying system, which includes the above-mentioned wheeled container 100, and may also include a pipeline, a power mechanism that provides pneumatic conveying power, etc.

[0055] In summary, the embodiments of the present invention provide a wheeled container and a conveying system for pipeline transportation. By respectively installing multiple first rollers and multiple second rollers on the bottom of the barrel body and the top of the cover body, hard friction between the container itself and the inner wall of the pipeline can be effectively avoided, and samples of larger weight (such as 2 to 12 kilograms) can be transported simply and smoothly, reducing labor costs and vehicle operating costs, improving sample delivery efficiency, and achieving the goal of reducing staff and increasing efficiency.

[0056] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A wheeled container for pipeline transportation, characterized in that: It comprises a barrel body with an opening at the top and a cover body for covering the barrel body, a plurality of first rollers are installed at the bottom of the barrel body, a plurality of second rollers are installed at the top of the cover body, the bottom ends of the first rollers are lower than the bottom of the barrel body, and the top ends of the second rollers are higher than the top of the cover body; A first wheel frame is installed at the bottom of the barrel body, and a plurality of the first rollers are installed on the first wheel frame; a second wheel frame is installed at the top of the cover body, and a plurality of the second rollers are installed on the second wheel frame; The first wheel frame and the second wheel frame each include a cylindrical intermediate shaft and a plurality of mounting plates disposed on the intermediate shaft, wherein the plurality of mounting plates are spaced apart along the circumference of the intermediate shaft, and each of the mounting plates is connected to one of the first rollers or one of the second rollers; The intermediate shaft on the second wheel frame includes a first shaft body segment and a second shaft body segment, the diameter of the first shaft body segment is larger than the second shaft body segment, the first shaft body segment is mounted on the cover body and matches the size of the cover body, the plurality of mounting plates are mounted on the second shaft body segment, and the diameter of the second roller is larger than the height of the second shaft body segment; It also includes a pressing sleeve, and the intermediate shaft and the cover body are both provided with a receiving hole for receiving the pressing sleeve, and the shapes of the receiving holes on the intermediate shaft and the cover body match the shape of the pressing sleeve; The receiving hole on the intermediate shaft passes through the intermediate shaft axially, the pressing sleeve comprises a cylindrical section, a conical section and a convex section arranged from top to bottom, the diameter of the conical section gradually increases from top to bottom, the convex section is cylindrical, and the diameter of the convex section is larger than the diameter of the bottom end of the conical section, the top of the cylindrical section is located in the receiving hole on the intermediate shaft, the convex section is located in the cover body, and the height of the portion of the receiving hole corresponding to the size of the convex section is larger than the height of the convex section, so that the pressing sleeve can move in the height direction; The top of the cover body is provided with a pressing protrusion, the pressing sleeve is provided with a receiving cavity for receiving the pressing protrusion, the pressing protrusion is sleeved with a first spring, the top end of the first spring abuts against the top wall of the receiving cavity, and the bottom end abuts against the top of the cover body; A plurality of abutting members are also embedded in the cover body, a locking sleeve for keeping the cover body in an open or locked state is also provided on the side wall of the cover body, a plurality of embedding notches are provided on the locking sleeve, and when the pressing sleeve is in a non-pressing state, one end of the abutting member abuts against the conical section of the pressing sleeve, and the other end is embedded in the embedding notch on the locking sleeve, and a second spring for pressing the conical section against the abutting member is also provided in the cover body; A buffer seat is arranged at the bottom of the barrel body, and the bottom of the buffer seat is higher than the bottom of the first roller.

2. The wheeled container for pipeline transportation according to claim 1, characterized in that: A buffer pad is arranged on the top of the second shaft section on the second wheel frame, and the top of the buffer pad is lower than the top of the second roller.

3. The wheeled container for pipeline transportation according to claim 1, characterized in that: The accommodating cavity on the pressing sleeve includes a top cylindrical segment and a bottom cylindrical segment, the inner diameter of the bottom cylindrical segment is larger than the inner diameter of the top cylindrical segment, the top cylindrical segment matches the shape of the pressing protrusion, and a columnar structure matching the bottom cylindrical segment is formed on the cover body, the top end of the first spring abuts against the top wall of the accommodating cavity, and the bottom end abuts against the top of the columnar structure.

4. The wheeled container for pipeline transportation according to claim 1, characterized in that: The abutment member comprises a first column segment and a second column segment with a diameter smaller than that of the first column segment, the ends of the first column segment and the second column segment are both arc-shaped transitions, and the end of the second column segment is used to be embedded in the embedding notch on the locking sleeve; When the pressing sleeve is in a non-pressing state, one end of the first column segment abuts against the conical segment of the pressing sleeve, and an adjustment gap is formed between the other end and the inner cavity wall in the cover body for embedding the abutting piece. The second spring is located in the adjustment gap, and the second spring is sleeved on a portion of the second column segment close to one end of the first column segment, so that when the pressing sleeve is in a pressing state, the pressure applied by the second spring to the first column segment causes the end of the second column segment to be disengaged from the embedding notch.

5. A feeding system, characterized in that: A wheeled container for pipeline transportation comprising any one of claims 1-4.

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