Integrated anti-seismic nested seismic node transport basket

Abstract

The utility model discloses an integrated anti -seismic nested type earthquake node transport basket, including the basket body, the basket body sets up the stacking and stacking structure, the basket body is in the setting support board, the support board sets up the hole of placing, and the support board lower end surface is in the hole of placing and is connected and is placed the bucket, the bucket bottom center is set up the coccyx hole of placing, and the bucket bottom and the basket body lower end distance are greater than the coccyx length of earthquake node. The utility model has realized the special transport of earthquake node, has provided stronger integral rigidity and anti -impact ability, has solved the core problem of earthquake node in the harsh transportation easy to be damaged fundamentally.

Description

Technical Field

[0001] This utility model relates to the field of transportation technology, specifically an integrated earthquake-resistant stacked earthquake node transportation basket. Background Technology

[0002] There are two existing technical solutions: Solution 1: Split-type PP plastic transport basket, structural features: closed basket bottom + separate pallet shelves; structural defects: the split structure has more vulnerable parts, low utilization of empty basket storage space, and the lack of physical locking between the pallet and the basket body leads to component displacement due to transport vibration. Solution 2: Reinforced transport box, an improvement on Solution 1, using PP + 20% calcium carbonate filler and adding bottom drainage holes; unresolved issues: the filler reduces material toughness (impact strength decreases by 15%), and the split-type structure remains unchanged.

[0003] Transport baskets in the transportation sector:

[0004] Announcement No. CN219750475U discloses a transport frame for placing a raw material tank, including a protective frame, a support base, and multiple rollers. The fixed ends of the multiple rollers are fixedly connected to one side of the support base, and the rolling ends of the multiple rollers abut against the floor. The support base is arranged with the rollers spaced apart from the floor. The side of the support base away from the rollers abuts against the raw material tank. A flow channel is provided on the support base near the material tank's inlet. The protective frame is fixedly connected to the side of the support base away from the rollers and surrounds the raw material tank.

[0005] The existing technology cannot be stacked or arranged, and filler material is required when placing earthquake nodes.

[0006] Publication No. CN214139351U discloses a production and transportation frame, including a frame body. Transparent plates for marking are provided on the outer sides of both ends of the frame body. Ropes for holding small garment materials are symmetrically arranged on all four sides inside the frame body. Elastic devices are provided at both ends of the ropes, and the end of the elastic device furthest from the rope is fixedly connected to the frame body. This utility model has a simple structure and is easy to use.

[0007] The existing technology cannot be stacked or arranged, and filler material is required when placing earthquake nodes.

[0008] Announcement No. CN218317839U discloses a stackable and easy-to-store plant transport frame, including a frame body. A first support portion is formed on one side of the frame body, and a first sliding cavity is formed with both ends of the frame body. A second sliding cavity is formed on the other side of the frame body, and a second support portion is formed with both ends of the frame body. A second sliding portion is formed on the outside of the first sliding cavity, and a first sliding portion is formed on the outside of the second sliding cavity. When the plant transport frames are stacked, the second sliding portion is set on the first support portion, and the first sliding portion is set on the second support portion. When the plant transport is stored, the first sliding portion is inserted into the second sliding cavity, and the second sliding portion is inserted into the second sliding cavity.

[0009] The existing technology requires filling material when placing earthquake nodes, and the existing technology quickly adopts a concave stacking and stacking structure, which affects the transport frame space.

[0010] There is currently no integrated transport basket designed specifically for earthquake nodes. Utility Model Content

[0011] To overcome the shortcomings of the existing technology and solve at least one of the technical problems mentioned in the background art, this utility model provides an integrated seismic-resistant nested earthquake node transport basket.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] An integrated seismic-resistant stacked earthquake node transport basket includes a basket body with a stacking structure. A support plate is provided inside the basket body, and the support plate has placement holes. A placement bucket is connected to the placement holes on the lower end face of the support plate. A tail cone hole is provided at the center of the bottom of the placement bucket, and the distance between the bottom of the placement bucket and the lower end of the basket body is greater than the length of the tail cone of the earthquake node.

[0014] Furthermore, the basket is formed by enclosing side panels, which include a first side panel, a second side panel, a third side panel, and a fourth side panel connected in pairs. The first side panel and the third side panel are arranged opposite each other, and all side panels are trapezoids that are wider at the top and narrower at the bottom.

[0015] Specifically, the stacking structure includes a first mating groove, a second mating groove, a first locking groove, and a second locking groove;

[0016] Specifically, the inner wall of the first side plate is provided with a first mating groove with the notch facing inward, and the inner wall of the third side plate is provided with a second mating groove with the notch facing inward. The first mating groove and the second mating groove are staggered, and the upper ends of the first mating groove and the second mating groove are open.

[0017] Specifically, a second locking groove is provided at the upper end of the first side plate, and a first locking groove is provided at the upper end of the third side plate. The first mating groove and the first locking groove are arranged opposite each other and can be locked together. The second mating groove and the second locking groove are arranged opposite each other and can be locked together.

[0018] Furthermore, two first mating grooves and two second locking grooves are symmetrically arranged on the first side plate, and the second locking groove is located between the two first mating grooves;

[0019] Specifically, two of the second mating groove and the first locking groove are symmetrically arranged on the third side plate, with the second mating groove located between the two first locking grooves.

[0020] Furthermore, the first side plate has a first transport hole between two second locking slots, and the third side plate has a second transport hole between two second mating slots.

[0021] Specifically, a label plate is provided at the center of the second side panel and the fourth side panel;

[0022] Specifically, the basket body has roller slots at the four corners of its bottom.

[0023] Furthermore, the distance between the bottom of the placement bucket and the top of the basket is greater than the length of the main body of the earthquake node.

[0024] Furthermore, a circumferential top reinforcing rib is provided on the upper end of the outer wall of the basket. The top reinforcing rib is a flanged flat strip, and the first and second locking grooves are provided on the top reinforcing rib.

[0025] Furthermore, the outer wall of the basket is provided with at least two circumferential external reinforcing ribs between the top reinforcing rib and the support plate, and the outer wall of the basket is provided with vertical reinforcing ribs that vertically connect the top reinforcing rib and the external reinforcing ribs. At least two vertical reinforcing ribs are provided on each side plate and are symmetrically distributed.

[0026] Furthermore, the small square frame formed by the external reinforcing ribs and vertical reinforcing ribs is provided with upper ventilation holes arranged in a row, and the outer wall of the basket is provided with lower ventilation holes distributed below the support plate, corresponding to the upper ventilation holes.

[0027] Specifically, drainage holes are provided on the support plate.

[0028] Furthermore, the lower ends of the first and second mating grooves are provided with groove seals, and the first and second locking grooves are provided with protrusions that mate with the groove seals. The groove seals and protrusions are provided with anti-slip textures.

[0029] Furthermore, the placement buckets are arranged in at least two rows and at least two columns;

[0030] Specifically, the lower end face of the support plate is provided with a first supporting reinforcing rib connected to the inner wall of the basket between the placement buckets. The first supporting reinforcing rib is crisscrossed, and the bottom of the first supporting reinforcing rib is located between the bottom of the placement bucket and the bottom of the basket, so as not to interfere with the cooperation of the stacking structure.

[0031] Specifically, the inner wall of the basket and the first supporting reinforcing rib are provided with a second supporting reinforcing rib connected to the quadrant point of the outer wall of the placement bucket, and the longitudinal intersection point of the first supporting reinforcing rib is provided with a third supporting reinforcing rib connected to the odd multiple angle point of 45° on the outer wall of the placement bucket.

[0032] Specifically, the inner wall of the basket is connected to the adjacent placement bucket by smooth ribs.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] 1. This utility model realizes the dedicated transportation of seismic nodes, provides strong overall rigidity and impact resistance, and fundamentally solves the core problem that seismic nodes are easily damaged during harsh transportation.

[0035] 2. The nesting design of this utility model allows empty crates to be tightly nested, significantly saving storage and return space and greatly reducing logistics costs. Combined with the use of high-strength, tough, and aging-resistant high-quality materials, it further ensures the long-term durability and service life of the crate, achieving a dual improvement in safety protection and transportation efficiency, and has significant comprehensive advantages. Attached Figure Description

[0036] Figure 1 This is a structural schematic diagram of the transport basket of this utility model.

[0037] Figure 2 This is a half-sectional structural diagram of the transport basket of this utility model.

[0038] Figure 3 This is a schematic diagram of the bottom structure of the transport basket of this utility model.

[0039] Figure 4 This is a top view of the present invention after the seismic node has been placed.

[0040] Figure 5 This is a front view schematic diagram of the present invention after the seismic node has been placed.

[0041] Figure 6 This is a bottom view of the present invention after the seismic node has been placed.

[0042] Figure 7 This is a schematic diagram of the structure of this utility model after the seismic node is placed.

[0043] Figure 8This is a schematic diagram of the structure of this utility model, showing the staggered arrangement of the earthquake nodes.

[0044] Figure 9 This is a schematic diagram of the half-section structure of the present invention, showing the staggered arrangement of the earthquake nodes after placement.

[0045] Figure 10 This is a schematic diagram of the stacking structure of this utility model.

[0046] In the diagram: Support plate 1, Drainage hole 11, Placement bucket 2, Tail cone hole 21, Basket body 3, First side plate 31, Second side plate 32, Third side plate 33, Fourth side plate 34, First mating groove 41, Second mating groove 42, Groove sealing 43, First locking groove 51, Second locking groove 52, Protrusion 53, Top reinforcing rib 61, External reinforcing rib 62, Vertical reinforcing rib 63, Upper vent hole 64, Lower vent hole 65, First transport hole 71, Second transport hole 72, First support reinforcing rib 81, Second support reinforcing rib 82, Third support reinforcing rib 83, Smooth rib 84, Label plate 9, Seismic node 10. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] Example 1:

[0049] Please see Figures 1 to 10 This utility model provides an integrated earthquake-resistant stacked earthquake node transport basket, including a basket body 3. The basket body 3 is provided with a stacking structure. A support plate 1 is provided inside the basket body 3. The support plate 1 is provided with a placement hole. The lower end face of the support plate 1 is connected to the placement hole with a placement bucket 2. A tail cone hole 21 is provided at the center of the bottom of the placement bucket 2. The distance between the bottom of the placement bucket 2 and the lower end of the basket body 3 is greater than the tail cone length of the earthquake node 10.

[0050] Specifically, the distance between the bottom of the placement bucket 2 and the top of the basket 3 is greater than the main body length of the earthquake node 10, reducing the difficulty of stacking.

[0051] Specifically, the support plate 1 is provided with drainage holes 11.

[0052] Furthermore, the basket body 3 is formed by side panels, which include a first side panel 31, a second side panel 32, a third side panel 33, and a fourth side panel 34 connected in pairs. The first side panel 31 and the third side panel 33 are arranged opposite each other, and all side panels are trapezoids that are wider at the top and narrower at the bottom, so that the transport basket body 3 presents a trapezoidal cylindrical structure that is wider at the top and narrower at the bottom. The stacking structure includes a first mating groove 41, a second mating groove 42, a first locking groove 51, and a second locking groove 52. The inner wall of the first side panel 31 is provided with a first mating groove 41 with a notch facing inward. The inner wall of the third side panel 33 is provided with a first mating groove 41 with a notch facing inward. The wall is provided with a second mating groove 42 facing inward. The first mating groove 41 and the second mating groove 42 are staggered. The upper ends of the first mating groove 41 and the second mating groove 42 are open. The upper end of the first side plate 31 is provided with a second locking groove 52. The upper end of the third side plate 33 is provided with a first locking groove 51. The first mating groove 41 and the first locking groove 51 are opposite each other and can be locked together. The second mating groove 42 and the second locking groove 52 are opposite each other and can be locked together. Stacking can be achieved by inserting the outer wall of the mating groove of the upper transport basket into the inner wall of the corresponding mating groove of the lower transport basket. Figure 10 As shown; simply align the lower end of the upper transport basket's groove with the corresponding slot of the lower transport basket to achieve staggered stacking, as shown. Figure 9 As shown.

[0053] Specifically, the upper part of the outer wall of the basket 3 is provided with a circumferential top reinforcing rib 61, which is a flanged flat strip. The first slot 51 and the second slot 52 are provided on the top reinforcing rib 61.

[0054] Specifically, the outer wall of the basket 3 is provided with at least two circumferential external reinforcing ribs 62 between the top reinforcing rib 61 and the support plate 1. The outer wall of the basket 3 is provided with vertical reinforcing ribs 63 that vertically connect the top reinforcing rib 61 and the external reinforcing ribs 62. At least two vertical reinforcing ribs 63 are provided on each side plate and are symmetrically distributed to improve the strength of the basket 3.

[0055] Specifically, the small square frame formed by the external reinforcing ribs 62 and the vertical reinforcing ribs 63 is provided with upper ventilation holes 64 arranged in a row. The outer wall of the basket body 3 is provided with lower ventilation holes 65 corresponding to the upper ventilation holes 64 below the support plate 1. Preferably, the upper ventilation holes 64 are elongated ventilation holes arranged in a straight line array to prevent moisture and mildew and keep the nodes dry.

[0056] Specifically, the lower ends of the first mating groove 41 and the second mating groove 42 are provided with groove seals 43, and the first locking groove 51 and the second locking groove 52 are provided with protrusions 53 that cooperate with the groove seals 43. The groove seals 43 and the protrusions 53 are provided with anti-slip textures to enhance the mating effect of the mating grooves and locking grooves.

[0057] Specifically, two first mating grooves 41 and two second locking grooves 52 are symmetrically arranged on the first side plate 31, with the second locking groove 52 located between the two first mating grooves 41. Two second mating grooves 42 and two first locking grooves 51 are symmetrically arranged on the third side plate 33, with the second mating groove 42 located between the two first locking grooves 51.

[0058] Specifically, the first side plate 31 has a first transport hole 71 between two second locking grooves 52, and the third side plate 33 has a second transport hole 72 between two second mating grooves 42 for transport.

[0059] Specifically, the second side plate 32 and the fourth side plate 34 have a label plate 9 at the center position for pasting label paper.

[0060] Furthermore, the placement bucket 2 is provided with at least two rows and at least two columns. The lower end face of the support plate 1 is provided with a first supporting reinforcing rib 81 connected to the inner wall of the basket body 3 between the placement buckets 2. The first supporting reinforcing rib 81 is crisscrossed. The bottom of the first supporting reinforcing rib 81 is located between the bottom of the placement bucket 2 and the bottom of the basket body 3, so as not to interfere with the cooperation of the stacking structure. The inner wall of the basket body 3 and the first supporting reinforcing rib 81 are provided with a second supporting reinforcing rib 82 connected to the quadrant point of the outer wall of the placement bucket 2. The longitudinal intersection point of the first supporting reinforcing rib 81 is provided with a third supporting reinforcing rib 83 connected to the odd multiple angle point of 45° on the outer wall of the placement bucket 2.

[0061] Specifically, the inner wall of the basket 3 is connected to the adjacent placement bucket 2 by a smooth rib 84.

[0062] Example 2:

[0063] Based on Example 1, this example designs an integrated seismic-resistant nested seismic node transport basket for the I-Nodal V1 node instrument.

[0064] The material has been changed from the original polypropylene (PP) to modified toughened and reinforced nylon. This material is widely used in the manufacture of geophysical detector housings and other components in the geophysical exploration industry. It has high strength, good toughness, corrosion resistance, weather resistance, and is not prone to brittleness at low temperatures.

[0065] This transport basket is made of modified toughened and reinforced nylon through injection molding, and has an overall trapezoidal cylindrical structure that is wider at the top and narrower at the bottom.

[0066] External dimensions of basket 3: 550*396*300 (mm*mm*mm); Internal dimensions: 494*373*300 (mm*mm*mm), 300mm = 145mm (distance between the upper end of support plate 1 and the upper end of basket 3) + 4mm (thickness of support plate 1) + 151mm (distance between the lower end of support plate 1 and the lower end of basket 3); Weight: approximately 4 kg; Three rows and four columns are set for placing buckets 2.

[0067] Placing the lower end of bucket 2 95cm from the ground can effectively protect the node tail cone.

[0068] The inner wall of the basket has a 3° taper that tapers inward to form a self-centering guide surface. The wall thickness gradually changes from 5mm at the top to 8mm at the bottom to enhance impact resistance.

[0069] A radial shock-absorbing tray is integrated at approximately 1 / 3 of the height of the inner wall of the basket 3. The radial shock-absorbing tray includes a first supporting reinforcing rib 81, a second supporting reinforcing rib 82, and a third supporting reinforcing rib 83. The first supporting reinforcing rib 81 is the main reinforcing rib, with a rib height of 95mm and a root thickness of 3mm. The second supporting reinforcing rib 82 and the third supporting reinforcing rib 83 are secondary buffer ribs, with a radius difference of 50mm and a rib height of 3mm, forming a multi-level energy absorption structure.

[0070] The grooves 43 at the bottom of the first mating groove 41 and the second mating groove 42 on the basket body 3, and the protrusions 53 of the first locking groove 51 and the second locking groove 52 can effectively stabilize the transport baskets when they are stacked, preventing them from shaking and falling. When stacking in reverse, the anti-slip texture cooperates with the equipment protrusions to ensure that the stacking offset is <1.5mm. The four corners at the bottom of the basket body 3 are provided with roller slots, and the built-in positioning posts with a height of 12mm enable quick loading and unloading.

[0071] This transport crate features an integrated design, combining a high-strength protective frame, precision fixing slots customized for earthquake nodes 10, and a built-in buffer and shock absorption system into a single crate body 3 structure, completely eliminating the traditional split-type transport crate (split crate + internal filling material) model. This integrated structure far surpasses the overall strength and rigidity of traditional split crates, fundamentally solving the key technical problem of damage to internal precision components caused by displacement, collision, or high-frequency vibration during long-distance bumpy transportation. The crate body 3 employs a unique geometric design, allowing multiple empty crates 3 to be stably nested together, greatly reducing the storage space occupied by empty crates and the return transport volume, significantly reducing logistics costs. The crate body 3 is made of modified toughened and reinforced nylon, significantly improving the overall mechanical strength, impact resistance, and aging resistance of the transport crate under long-term use or harsh environments, thereby significantly extending the product's service life.

[0072] Tests have verified that this design reduces the axial displacement of the instrument from 8.7mm in the traditional structure to 0.9mm, improves loading and unloading efficiency by 34.9%, stacks six empty baskets to a height of 1.1 meters, reduces the volume of empty basket transportation by 39%, and reduces the annual loss rate from 37% to below 5% under extreme conditions.

[0073] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0074] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0075] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0076] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated seismic-resistant, nested earthquake node transport basket, comprising a basket body, wherein the basket body is provided with a stacking structure, characterized in that, A support plate is provided inside the basket, and the support plate is provided with a placement hole. The lower end face of the support plate is connected to the placement hole to place the bucket. The bottom of the placement bucket is provided with a tail cone hole at the center, and the distance between the bottom of the placement bucket and the lower end of the basket is greater than the length of the tail cone of the earthquake node.

2. The integrated seismic-resistant nested earthquake node transport basket according to claim 1, characterized in that, The basket is formed by enclosing side panels, which include a first side panel, a second side panel, a third side panel, and a fourth side panel connected in pairs. The first side panel and the third side panel are arranged opposite each other, and all side panels are trapezoids that are wider at the top and narrower at the bottom. The stacking structure includes a first mating groove, a second mating groove, a first locking groove, and a second locking groove; The inner wall of the first side plate is provided with a first mating groove with an inward recess, and the inner wall of the third side plate is provided with a second mating groove with an inward recess. The first mating groove and the second mating groove are staggered, and the upper ends of the first mating groove and the second mating groove are open. The upper end of the first side plate is provided with a second locking groove, and the upper end of the third side plate is provided with a first locking groove. The first mating groove and the first locking groove are arranged opposite each other and can be locked together. The second mating groove and the second locking groove are arranged opposite each other and can be locked together.

3. The integrated seismic-resistant nested earthquake node transport basket according to claim 2, characterized in that, Two first mating grooves and two second locking grooves are symmetrically arranged on the first side plate, and the second locking groove is located between the two first mating grooves; The second mating groove and the first locking groove are symmetrically arranged in two on the third side plate, with the second mating groove located between the two first locking grooves.

4. The integrated seismic-resistant nested earthquake node transport basket according to claim 3, characterized in that, The first side plate has a first transport hole between two second locking slots, and the third side plate has a second transport hole between two second mating slots. Label plates are installed at the center of the second and fourth side panels; The basket has roller slots at the four corners of its bottom.

5. The integrated seismic-resistant nested earthquake node transport basket according to claim 1, characterized in that, The distance between the bottom of the placement bucket and the top of the basket is greater than the length of the main body of the earthquake node.

6. The integrated seismic-resistant nested earthquake node transport basket according to claim 2, characterized in that, The upper part of the outer wall of the basket is provided with a circumferential top reinforcing rib, which is a flanged flat strip. The first and second locking grooves are provided on the top reinforcing rib.

7. The integrated seismic-resistant nested earthquake node transport basket according to claim 6, characterized in that, The outer wall of the basket has at least two circumferential external reinforcing ribs between the top reinforcing rib and the support plate. The outer wall of the basket is provided with vertical reinforcing ribs that connect the top reinforcing rib and the external reinforcing ribs. At least two vertical reinforcing ribs are provided on each side plate and are symmetrically distributed.

8. The integrated seismic-resistant nested earthquake node transport basket according to claim 7, characterized in that, The small square frame formed by the external reinforcing ribs and vertical reinforcing ribs is provided with upper ventilation holes arranged in a row, and the outer wall of the basket is provided with lower ventilation holes distributed below the support plate, corresponding to the upper ventilation holes. Drainage holes are provided on the support plate.

9. The integrated seismic-resistant nested earthquake node transport basket according to claim 2, characterized in that, The lower ends of the first and second mating grooves are provided with groove seals, and the first and second locking grooves are provided with protrusions that mate with the groove seals. The groove seals and protrusions are provided with anti-slip textures.

10. The integrated seismic-resistant nested earthquake node transport basket according to claim 1, characterized in that, The placement buckets are arranged in at least two rows and at least two columns; The lower end face of the support plate is provided with a first support reinforcing rib connected to the inner wall of the basket between the placement buckets. The first support reinforcing rib is crisscrossed. The bottom of the first support reinforcing rib is located between the bottom of the placement bucket and the bottom of the basket, so as not to interfere with the cooperation of the stacking structure. The inner wall of the basket and the first supporting reinforcing rib are provided with a second supporting reinforcing rib connected to the quadrant point of the outer wall of the placement bucket, and the longitudinal intersection point of the first supporting reinforcing rib is provided with a third supporting reinforcing rib connected to the odd multiple angle point of 45° on the outer wall of the placement bucket. The inner wall of the basket is connected to the adjacent placement bucket by smooth ribs.

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