297 results about "Transverse groove" patented technology

The utility model discloses a high-performance light truck snow tire which comprises a central pattern block, a tire shoulder pattern block, a longitudinal groove, a transverse groove, a central groove, a non-through V-shaped groove, a zigzag three-dimensional (3D) channel steel sheet I, a zigzag 3D channel steel sheet II, a groove bottom trapezoidal silencing bolt and a reinforcing rib, the non-through V-shaped grooves are located at the front end of the rhombus, the longitudinal grooves are designed between the tire shoulder pattern blocks and the center pattern block and are designed in a zigzag shape, the first zigzag 3D cutter groove steel sheets are designed on the tire shoulder pattern blocks, the transverse grooves are designed between every two adjacent tire shoulder pattern blocks, and the second zigzag 3D cutter groove steel sheets are designed on the tire shoulder pattern blocks. By optimizing the pattern shape, widening the transverse grooves, optimizing the shapes and the depths of the longitudinal grooves and the width grooves and adopting the design of the zigzag three-dimensional cutter box steel sheets and the inclined steel sheets, compared with the existing same type and same specification, the snowfield performance is ensured, and the slippery noise performance of the tire is improved on the basis of ensuring the snowfield performance.

The utility model relates to an anti-separation paving structure plate which comprises a panel, a functional groove is arranged on the side face of the panel, the functional groove is provided with a transverse groove wall and a vertical groove wall connected with the transverse groove wall, the transverse groove wall is connected with the side face of the panel, and the vertical groove wall is further connected with the lower surface of the panel. According to the utility model, through the arrangement of the functional groove, the paving stability and the firm strength of the panel are improved. The functional groove also has a precise positioning function, and when the panels are paved, the space positions of the panels can be automatically and precisely positioned by matching the functional groove with the mortise or the connecting piece arranged on the paving basic surface, so that on one hand, the positioning difficulty is reduced, and on the other hand, the positioning precision is improved; and no yellow sand cement pollutes the side face of the panel, so that seam beautifying construction of the paved panel is more convenient and attractive, and the paving quality is improved.

The utility model relates to the technical field of track structures, in particular to a frame type embedded track structure which comprises a base body, a transverse groove is formed in the base body, a noise reduction mechanism is arranged in the base body, the noise reduction mechanism comprises a vibration isolation supporting plate, the vibration isolation supporting plate is fixedly connected to the top of the inner side of the transverse groove, and the vibration isolation supporting plate is fixedly connected to the top of the inner side of the transverse groove. The top of the vibration isolation supporting plate is fixedly connected with a damping rod, the outer wall of the damping rod is sleeved with a spring, the top of the damping rod is fixedly connected with an elastic plate, the top of the elastic plate is fixedly connected with a rubber pad, the top of the rubber pad is fixedly connected with a boss, and the back of the boss is fixedly connected with a cross beam. The vibration isolation supporting plate is used for isolating vibration, the rubber pads are used for buffering and supporting, the two transverse grooves are formed in the left side and the right side of the interior of the base body, and the train noise can be reduced when a train passes through the train noise reduction device, so that the situation that the life of residents is affected due to the fact that the train noise is too large is avoided.

The utility model discloses a distributor with a spiral lock. The distributor comprises a pump body, a valve rod, a spiral sleeve and a spring. The lower portion of the valve rod is sleeved with the spiral sleeve, and the spiral sleeve and the valve rod are fixed in the circumferential direction. The valve rod is sleeved with the spring, the upper plane of the spring abuts against the duckbill, and the lower plane of the spring abuts against the spiral sleeve. A spiral groove is formed in the pump body, and a transverse groove is formed adjacent to the top of the spiral groove. A spiral protrusion is arranged on the side wall of the spiral sleeve. When the spiral protrusion is located in the transverse groove, the distributor with the spiral lock is in an opened state. When the spiral protrusion is located at the bottom of the spiral groove, the distributor with the spiral lock is in a closed state. According to the distributor with the spiral lock, the user experience of consumers is improved, and the service life of the distributor is prolonged. According to the distributor with the spiral lock, the product height is reduced, and the production cost is reduced; and the outer diameter of the pump body is reduced, so that the adaptability and the applicability of the spiral lock distributor are wider.

The utility model relates to the technical field of range hoods, and particularly discloses a hanging structure, a range hood and a hoisting system. The hanging structure comprises a mounting frame, hanging groove structures are arranged on the two opposite sides of the mounting frame, each hanging groove structure comprises a vertical groove, a transverse groove and a limiting piece, the vertical grooves extend in the vertical direction, openings are formed in the positions, at the bottom of the mounting frame, of the lower ends of the vertical grooves, the transverse grooves extend in the horizontal direction, and the limiting pieces are arranged on the transverse grooves. One end of the transverse groove is communicated with the upper end of the vertical groove; and the limiting piece is arranged in the transverse groove and is used for limiting the hook in the transverse groove to be separated from the transverse groove. According to the utility model, the range hood can be conveniently and quickly mounted, and the mounting efficiency is improved.

The utility model discloses a tungsten molybdenum mould claw, relates to claw technical field, including base, the top of base is provided with the adaptation mechanism for adaptation tungsten molybdenum mould of different specifications and dimensions to carry out the clamping, adaptation mechanism includes: the clamping unit, be provided on the top of base and be used for the clamping power passes through the clamping unit; the adjusting unit is arranged above the clamping unit and comprises a mounting box, an I-shaped groove is formed in the mounting box, a first rack is slidably mounted in a lower transverse groove of the I-shaped groove, a second rack is slidably mounted in an upper transverse groove of the I-shaped groove, and a rotating column is rotatably mounted in the mounting box; the adjusting unit is arranged, the hand wheel is rotated to drive the gear to rotate through the rotating column, the gear drives the first rack and the second rack to move in the opposite direction or in the opposite direction, and therefore the clamping base assembly is driven to synchronously move in the opposite direction or in the opposite direction, and tungsten-molybdenum dies of different specifications and sizes are clamped and fixed.

The invention relates to an eccentric-to-concentric angle adjuster which comprises an outer toothed plate installed on a guide plate through a cross coupling, and the surface, facing the cross coupling, of the guide plate is provided with paired transverse protrusions so that transverse sliding grooves can be formed between the transverse protrusions. The surface, facing the cross coupling, of the outer toothed plate is provided with paired vertical protrusions so that a vertical sliding groove can be formed between the vertical protrusions, the cross coupling comprises a transverse sliding block and a vertical sliding block which are vertically arranged, the transverse sliding block is contained in the transverse sliding groove to slide so as to provide contact fit, and the vertical sliding block is contained in the vertical sliding groove to slide so as to provide contact fit; the cross coupling further comprises supporting blocks or wedge-shaped blocks acting on the transverse sliding blocks and the vertical sliding blocks so that the transverse sliding blocks and the vertical sliding blocks can be expanded in the width direction to eliminate the sliding groove gaps. According to the eccentric-to-concentric angle adjuster, on the premise of low cost, all the sliding groove gaps in the cross-shaped structure are stably controlled to be not larger than 0.015 mm, and the backrest gap is greatly reduced.

The utility model discloses a cross beam suspended straight-row tool magazine, which relates to the technical field of tool changing of machine tools and comprises a tool magazine bottom plate, a pushing mechanism and a suspension plate. The pushing mechanism drives the tool magazine bottom plate to move front and back. A transverse rod is detachably installed on the front side of the tool magazine bottom plate through screws, side plates are fixedly installed at the left end and the right end of the transverse rod, transverse grooves are formed in the side plates, right-angle grooves which are bent downwards are formed in the front ends of the transverse grooves, and clamping grooves are formed between the right-angle grooves and the transverse grooves. A shielding cover is fixedly installed on the front side of the hanging plate, a cross rod and a knife rest are installed in the shielding cover in a clearance fit mode, a cover plate is installed on the upper edge of the front side of the shielding cover in a hinged fit mode, pulley yokes are fixedly installed at the left end and the right end of the rear side of the cover plate, and sliding wheels are installed on the pulley yokes in a rotating fit mode. The sliding wheel is installed among the transverse groove, the right-angle groove and the clamping groove in a sliding fit mode. The shielding cover can be used for preventing metal chippings from affecting the tool magazine during machine tool machining, and the service life of the tool magazine is guaranteed.

The utility model discloses a raised floor and stone ground joining, installing and fixing structure which comprises a hollow supporting bottom piece, a slotting supporting column is fixedly connected to the top of the hollow supporting bottom piece, a transverse groove is formed in an inner cavity of the slotting supporting column, and a positioning fixing column is connected to the inner cavity of the slotting supporting column in a sliding mode. A positioning fixing column is arranged on the surface of the transverse groove, a supporting round head is welded to the top end of the positioning fixing column, a plate round head is fixedly connected to the top end of the supporting round head, supporting round rods are slidably connected to the left side and the right side of an inner cavity of the transverse groove, and a spring is welded between a bevel head and the inner cavity of the transverse groove. And when the plate round head is higher than the position of the inclined plane head, the inclined plane head is reset under the action of the spring, and the installation of the slotted support column is completed, so that the purposes of facilitating the installation of the raised floor support and accelerating the laying process of the support can be achieved.

The utility model relates to a fixing tool for instrument board softening skin gluing, which comprises a working table and a plurality of fixing assemblies arranged on one side of the working table, each fixing assembly comprises a fixing rod, a moving rod, a movable block, a lower clamping plate and an upper clamping plate, one end of each movable block is sleeved on the outer wall of the corresponding fixing rod, and the other end of each movable block is sleeved on the outer wall of the corresponding moving rod. The movable rod is installed at the other end of the movable block in a penetrating mode, the installation direction of the movable rod is kept perpendicular to the fixed rod, a rotating rod is movably installed at the end of the movable rod, a lower clamping plate is fixedly installed at the end of the rotating rod, an upper clamping plate is movably installed above the lower clamping plate, and a transverse groove is formed in the outer wall of the movable rod. The direction of the lower clamping plate is changed through the rotating rod so as to adapt to the irregular shell edge, the skin is rapidly fixed from the edge, and positioning is completed. And the edge of the skin is clamped, so that an operator can conveniently apply force to smoothly paste the skin on the shell.

The invention relates to vehicle tires with a tread having at least one shoulder-side profile rib (1) bounded by a shoulder-side circumferential groove (2), comprising an inner section (11), a shoulder section (12), a rib outer surface (1a), and groove-cut combinations (K) consisting of a transverse groove (3) extending at least in the shoulder section (12) and a cut (9) extending from the transverse groove (3) towards the shoulder-side circumferential groove (2). wherein the transverse groove (3) on the outer surface of the rib (1a) has an end edge (4) and an end flank (3d) extending towards the end edge (4) and wherein the incision (9) has an incision opening (9e) located on the end flank (3d) of the transverse groove (3). The incision (9) opens into the shoulder-side circumferential groove (2) and divides the end edge (4) into two end edge sections (4a), whereby the incision opening (9e) located on the end flank (3d) of the transverse groove (3) is surrounded by the end flank (3d) in a U-shape.

The invention relates to a combination of a disc pin cylinder lock (3) and a key (2), the disc pin cylinder lock (3) comprising a rotation limiting device (10) for the key. The rotation limiting device comprises a main body (13) having a key profile opening (34), and a guide element (12) connected to the main body. The key (2) comprises guide grooves (21) located on both sides of the key in the longitudinal direction of the key shank (2A), and a transverse groove (19) transverse to the longitudinal axis of the shank (2A) of the key (2). The rotation limiting device (10) comprises one or two plates (14).

This invention discloses an adjustable shaped charge device and its blasting method for bench blasting in open-pit mines, relating to the field of engineering blasting technology. The adjustable shaped charge device includes: an adjustable shaped charge liner, lifting holes, a sheath, a transverse groove, a cross-shaped buckle, an adjustable liner, linear shaped charge slots, and a bottom cylindrical counterweight. Lifting holes are provided on both sides of the top of the adjustable shaped charge liner. A sheath and a transverse groove are provided on the upper part of the inner wall of the adjustable shaped charge liner. The sheath is detachably connected to the adjustable liner via cross-shaped buckles. The linear shaped charge slots are provided at both ends of the adjustable liner, and the bottom of the adjustable liner is fixedly connected to the bottom cylindrical counterweight. The entire adjustable shaped charge device is placed at the bottom of the blast hole. This invention solves the problems of uneven energy distribution, unstable fragmentation effect, and high root ratio and large block ratio in existing technologies under complex rock strata conditions.

The utility model provides a wall -hanging indoor air purification device belongs to air purifier technical field, including air purifier body, the vertical groove, horizontal groove and oblique groove of setting up in air purifier body one side outer wall, horizontal groove is located between vertical groove and oblique groove and is linked together, two fender strips of symmetry of being equipped with in the inner side wall of vertical groove, horizontal groove and oblique groove, fender strip two of being equipped with in the inner side wall of vertical groove, the docking platform of being equipped with in air purifier body one side position place, the fixed seat of integrative molding in the docking platform outer side wall central position place, the utility model passes through the docking platform to the air purifier body of being set in its outside in vertical direction support, and utilizes fender strip one and fender strip two in horizontal direction limit, realizes air purifier body and docking platform docking firm and stable, and horizontal sleeve joint's mode is convenient for air purifier body dismounting, and is convenient for overhauling, and the difficulty of overhauling is low.

The utility model discloses a draggable bottom frame which comprises a base, two sets of transverse groove plates are fixedly installed on the top of the base, the base is made of high-strength alloy steel, two sets of lifting lug shafts are fixedly installed on the transverse groove plates, lifting lug shaft plates are fixedly arranged at the outer side ends of the lifting lug shafts, and the transverse groove plates are connected through two sets of vertical groove plates. The outer sides of the vertical groove plates are connected with end steel channels through a plurality of sets of end reinforcing plates, the two ends of the end steel channels are fixedly connected with the transverse groove plates through connecting plates, the bottoms of the end steel channels are fixedly connected with the base through inclined bottom frame blocking plates, and dragging grooves are fixedly formed in the outer sides of the end steel channels. The end steel channels are installed above the base, the dragging grooves are fixedly formed in the outer sides of the end steel channels, the bottom frame can be dragged to move through the dragging grooves in the later period, meanwhile, the base is made of high-strength alloy steel, and the moisture absorption layer and the anti-skid layer are fixedly arranged on the inner sides of the dragging grooves in sequence. Therefore, the wear resistance of the base during dragging is further improved.

The utility model discloses a kind of block wall structure with anti-infiltration structure, it is related to block wall technical field, including block body, the upper surface outer edge of the block body is provided with transverse groove, the lower surface outer edge of the block body is provided with transverse protrusion, the transverse protrusion is matched with the transverse groove of adjacent block body, the left side surface outer edge of the block body is provided with vertical protrusion, the right side surface outer edge of the block body is provided with vertical groove, the vertical groove is matched with the vertical protrusion of adjacent block body, positioning assembly is provided on the block body;The utility model is formed by transverse protrusion and transverse groove, vertical protrusion and vertical groove, and "Z" shape masonry gap, so that there is height difference and distance difference between outer edge and internal masonry gap, effectively block rainwater into wall interior.

This utility model discloses a motor housing explosion-proof pressure-resistant testing device, including a base and two mounting mechanisms mounted on the base. Each mounting mechanism includes a transverse groove vertically extending along the length of the base on one side of its upper surface. A threaded rod is laterally rotatably connected to the middle of the inner surface of the groove, and a threaded sleeve is threadedly connected to the outer surface of the threaded rod. A slider adapted to the length of the groove is slidably connected inside the transverse groove. A through groove adapted to the threaded sleeve is laterally extended through the middle of the side surface of the slider, and the threaded sleeve is vertically slidably connected inside the through groove. Bolt slots extending along the length of the base are vertically extended through the upper surface of the slider and at both ends of the threaded rod. This device features two mounting mechanisms on the base, with elongated bolt slots on the sliders of both mechanisms, and both sliders are capable of lateral movement. This allows the device to adapt to various motor models, thereby improving its versatility.

The utility model discloses a steel grating cutting device, and relates to the technical field of steel grating cutting. The steel grating machining device comprises a machining table, a steel grating body is movably installed at the top end of the machining table, a supporting base is fixedly installed on the left side of the top end of the machining table, a direction groove is formed in one end of the supporting base, a first screw rod is rotatably installed on the inner side of the direction groove, and a movable frame is connected to the outer side of the first screw rod in a threaded and sleeved mode. A second screw rod is rotationally mounted on the inner side of the moving frame, and the outer side of the second screw rod is in threaded connection with a moving block in a sleeving mode; through cooperation of a first motor, a second motor, a first screw rod, a second screw rod, a moving frame and a moving block, a longitudinal block slides in a longitudinal groove to guide the moving frame, and a transverse block slides in a transverse groove to guide the moving block, so that a telescopic rod and cutting equipment are controlled to move at will above a steel grating body, cutting is conducted at will, and the cutting flexibility is improved; and the requirement for cutting different size parameters is met conveniently, and practicability is improved.

The utility model relates to the technical field of rolling equipment, in particular to a rolling roller set which comprises two parallel rollers, a rolling gap is formed between the two rollers, rolling textures are arranged on the outer surface of at least one roller, and the rolling textures are arranged on the outer surface of the rolling gap. The calendering texture is configured to comprise rattan-plaited recesses recessed inwards from the outer surfaces of the rollers and a plurality of raised platforms surrounded by the rattan-plaited recesses, and a certain distance is formed between each raised platform and the other roller; the rattan-plaited recess forms a plurality of rattan-plaited nodes, each rattan-plaited node comprises two transverse grooves, two vertical grooves, two 45-degree inclined grooves and two 135-degree inclined grooves, the two 45-degree inclined grooves and the two 135-degree inclined grooves are circumferentially and uniformly distributed in the circumferential direction to form a windmill shape, the tail end of each 45-degree inclined groove is connected with the middle of the corresponding vertical groove, and the tail end of each 45-degree inclined groove is connected with the middle of the corresponding vertical groove. The tail end of each 135-degree inclined groove is connected with the middle part of the transverse groove; the raised platforms are octagonal, and the rattan-plaited nodes and the raised platforms are arranged at intervals in the transverse direction and the vertical direction. The rolling roller set can solve the problem that in the prior art, no rolling roller set for producing the rattan plaited decorative plate exists.

The application relates to the field of tire technology and discloses a high-performance light truck snow tire, which comprises a center pattern part and a shoulder pattern part, and a longitudinal groove is arranged between the center pattern part and the shoulder pattern part; the center pattern part comprises a center groove and oblique grooves, the center groove is arranged in the middle of a tread and extends along the circumferential direction of the tread, a plurality of the oblique grooves are symmetrically arranged on the two sides of the center groove and extend to the longitudinal groove, the center groove, the oblique grooves and the longitudinal groove divide the center pattern part into a plurality of diamond-shaped center pattern blocks; the shoulder pattern part comprises transverse grooves and trapezoidal sound-absorbing plugs arranged between the transverse grooves, the transverse grooves extend along the width direction of the tread, and the transverse grooves and the longitudinal groove divide the shoulder pattern part into a plurality of shoulder pattern blocks. On the basis of ensuring the snow performance, the wet skid and noise performance of the light truck snow tire are improved.

The simple folding type pouring device comprises a left drainage plate and a right drainage plate, the adjacent ends of the two drainage plates are hinged to each other, the front side and the rear side of the outer end of each drainage plate are each fixedly provided with a transverse rod, the axis of each transverse rod is horizontally arranged in the front-back direction, and each transverse rod is rotationally connected with a U-shaped block with a downward opening. A transverse groove in the front-back direction is formed in the end, close to the hinged shaft, of each drainage plate, a scraping plate capable of moving up and down along the transverse groove is arranged in each transverse groove, and the scraping plates can be attached to the upper end faces of the drainage plates to move left and right after moving upwards out of the transverse grooves; according to the utility model, the end parts of the two drainage plates are hinged and arranged above the side wall template of the rainwater ditch in the herringbone shape, so that the two sides of a single concrete pouring pipeline can be poured at the same time, and the pouring efficiency is greatly improved.

The present invention addresses the problem of achieving heat generation resistance, wear resistance, and stone trapping resistance. Provided is a pneumatic tire 1 that, in the tread thereof, comprises: two or more longitudinal grooves 21 and 22 that each continuously extend in the tire circumferential direction; a center transverse groove 41 that extends in the tire width direction and communicates with the longitudinal grooves; a shoulder transverse groove 51 that, in the tire width direction, communicates with the outer side of each longitudinal groove on the outermost side in the tire width direction and that extends in the tire width direction; a center block 31A that is partitioned by the longitudinal grooves and the center transverse groove 41; a shoulder block 32A that is partitioned by the longitudinal grooves and the shoulder transverse groove; and a dimple 61 that is open on the tread surface 15A in the center block, wherein the opening of the dimple is formed to have a polygonal shape, the depth of the dimple is not less than 25 [%] of the groove depth of the shoulder transverse groove, the cross-sectional shape of the dimple in the tire radial direction is formed to become smaller from the opening toward the groove bottom, and the opening area of the dimple relative to the block tread surface area is greater than 6 [%] and smaller than 20 [%].

A respiratory function exercise device effectively solves the problems that an existing weight lifting device is prone to falling and has safety risks, and when training intensity is adjusted, a balance weight needs to be found, and operation is troublesome. Comprising an H-shaped mounting frame, mounting plates are fixed to the left side and the right side of the upper end of the mounting frame correspondingly, a plurality of mounting holes are formed in the mounting plates, moving grooves are formed in the left side and the right side of the mounting frame correspondingly, moving blocks are slidably connected into the moving grooves, and T-shaped vertical grooves with downward openings are formed in the two moving blocks correspondingly; a U-shaped weight lifting rod is slidably connected into the two vertical grooves, the rear sides of the two moving grooves are communicated through a transverse groove, the left side and the right side of the transverse groove are each slidably connected with a transverse rod, and friction blocks are fixed to the opposite ends of the two transverse rods respectively; the weight lifting rod is ingenious in structure, the initial state of the weight lifting rod can be adjusted according to the height of a patient, the comfort degree of the patient during weight lifting training is increased, upper limb muscles and respiratory muscles can be trained, the lung function is enhanced, disease recovery of the patient is facilitated, and practicability is high.

The utility model provides a tire tread structure and a tire with the same. Pattern units of the tire tread structure comprise first transverse pattern blocks and second transverse pattern blocks, wherein the first transverse pattern blocks and the second transverse pattern blocks form a herringbone structure; the central pattern blocks are located between the first transverse pattern blocks and the second transverse pattern blocks, and at least part of the central pattern blocks coincide with the central plane S; wherein two longitudinal grooves are formed between the central pattern blocks of the plurality of pattern units and the transverse pattern structures of the plurality of pattern units in a surrounding manner, and the opening width W1 of each longitudinal groove and the tread width TR of the tire meet the following condition: 0.0535 TR < = W1 < = 0.0575 TR; a transverse groove is formed between every two adjacent transverse pattern structures in a surrounding mode, and the opening width W2 and the opening width W1 of each transverse groove meet the condition that W2 is larger than W1. The self-cleaning tire effectively solves the problem that the self-cleaning performance and the driving stability of the tire of the agricultural machine in the prior art are poor.

The present application relates to the technical field of machining equipment, provide a kind of drilling mechanism and section bar drilling and milling equipment, drilling mechanism includes mounting seat, track plate, first drive component and three drilling components, the track plate is erected on the mounting seat, two vertical grooves and the horizontal groove between the two vertical grooves are opened in the track plate, the first drive component is installed on the mounting seat, the output end of the first drive component is connected with the drilling component transmission, the drilling head is movably provided on the drilling component, the connecting sleeve is sleeved on the drilling head, the adjusting piece is fixed on the connecting sleeve, the slide pin is detachably inserted on the adjusting piece, three slide pins are respectively slidably assembled in two vertical grooves and the horizontal groove.This application solves the problem of poor adaptability caused by fixed drilling shaft position, and has the advantages of compact structure, good processing adaptability and high processing effect.

The tread pattern features four circumferential grooves in the form of broken lines, dividing it into five rows; the first and fifth rows each have three additional shallow wavy transverse grooves; the second and fourth rows have additional wavy transverse grooves; the transverse grooves in the first row are arc-shaped and oriented at a slight downward angle; the transverse grooves in the fifth row are arc-shaped and oriented at a slight upward angle; the second and fourth rows contain patterns formed by transverse and longitudinal grooves that match the height of two elements in the first and fifth rows; rows two and three have notches oriented diagonally from the center; the third row has notches oriented diagonally from the center.

The utility model provides a tire tread structure. The tire tread structure comprises a plurality of longitudinal grooves which extend in the circumferential direction of a tire and are arranged at intervals in the width direction of the tire so as to divide a tire tread into two tire shoulder pattern parts and a plurality of middle pattern parts located between the two tire shoulder pattern parts, the longitudinal grooves located between every two adjacent middle pattern parts comprise a plurality of linear grooves and a plurality of arc-shaped grooves which are communicated with each other, and each arc-shaped groove is located between every two adjacent linear grooves; the first transverse groove is formed in the tire shoulder pattern part, one end of the first transverse groove is located in the tire shoulder pattern part, and the other end of the first transverse groove is communicated with the longitudinal groove; wherein a first concave part is arranged at the bottom of the first transverse groove. According to the wide-base tire, the problem that the service life of the wide-base tire in the prior art is relatively short is effectively solved.

The utility model discloses a four-season commercial vehicle tire which comprises a tire body, patterns are arranged on the surface of the tire body, the patterns are divided into center patterns and tire shoulder patterns through three straight grooves which are arranged in parallel in the circumferential direction, transverse grooves which are communicated with the three straight grooves are formed in the width direction of the center patterns, and the tire shoulder patterns are arranged in the transverse grooves. A short groove is embedded in each pitch on the two sides of the middle straight groove, and steel sheet ribs are inserted into all the pattern blocks; by means of the mode, the design of the tread pattern structure can meet the requirement for use in four seasons, and is particularly suitable for European commercial vehicles.