Movable apron and spreader

Abstract

This utility model discloses a movable baffle and a paver with a movable baffle. The movable baffle includes a fixed plate, a rotating plate, a rotating mechanism, and a damping mechanism. The fixed plate is arranged along a set direction. The rotating plate includes a rotating part and a bending part, with one end of the rotating part and one end of the bending part fixedly connected. The rotating plate has a material-blocking side and a back side. The bending part is inclined towards the material-blocking side and forms an obtuse angle with the rotating part. The rotating mechanism includes a rotating seat and a rotating shaft. The rotating seat is fixed on the fixed plate, and the rotating shaft is fixedly connected to the rotating part, so that the end of the rotating part away from the bending part is rotatably connected to the fixed plate. The damping mechanism is disposed between the rotating seat and the rotating shaft, and is used to drive the rotating plate to rotate towards the back side. When the movable baffle collides with a manhole cover on the ground, the rotating mechanism provides room for the rotating plate to move, avoiding rigid contact that could damage the movable baffle.

Description

Technical Field

[0001] This utility model relates to the field of pavers, and in particular to a movable baffle and a paver. Background Technology

[0002] In asphalt pavement construction, the baffle mechanism of the paver is crucial for controlling the asphalt paving range and adapting to complex road conditions. For example, utility model patent application CN202022664920.7 discloses an asphalt paver with easily replaceable rubber baffles, relating to the field of road construction machinery. It includes a paver body and an auger paver disposed on one side of the paver body. A baffle is disposed on the side of the auger near the paver body, and a rubber plate is disposed on the lower side of the baffle. An installation plate is fixedly connected to the side of the rubber plate near the baffle, and a connecting block is fixedly connected to the side of the installation plate away from the rubber plate. A connecting groove for inserting and fitting the connecting block is opened on the side of the baffle near the installation plate, and a fixing component for fixing the connecting block is provided on the side of the baffle. In this technology, the paver uses a fixed baffle structure. If the baffle encounters obstacles such as manhole covers, the rigid contact between the baffle and the obstacle can easily lead to deformation and breakage of the baffle, even affecting the normal operation of the paver. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a movable baffle that can avoid damage to the movable baffle caused by rigid contact.

[0004] This utility model also proposes a paver with the aforementioned movable baffle.

[0005] According to a first aspect of the present invention, a movable baffle includes a fixed plate, a rotating plate, a rotating mechanism, and a damping mechanism. The fixed plate is arranged along a setting direction. The rotating plate includes a rotating part and a bent part, one end of the rotating part and one end of the bent part are fixedly connected. The rotating plate has a material-blocking side and a back side. The bent part is inclined toward the material-blocking side and is arranged at an obtuse angle with the rotating part. The rotating mechanism includes a rotating seat and a rotating shaft. The rotating seat is fixed to the fixed plate, and the rotating shaft is fixedly connected to the rotating part so that the end of the rotating part away from the bent part is rotatably connected to the fixed plate. The damping mechanism is disposed between the rotating seat and the rotating shaft, and the damping mechanism is used to limit the rotation speed of the rotating plate.

[0006] The movable baffle according to the embodiment of this utility model has at least the following beneficial effects:

[0007] 1. When the movable baffle collides with the manhole cover on the ground, the rotating mechanism can provide room for the rotating plate to move, avoiding rigid contact that could damage the movable baffle;

[0008] 2. The damping mechanism limits the reset speed of the movable baffle through damping force, preventing the rotating plate from falling too quickly due to gravity and kicking up asphalt. This allows the movable baffle to work with the auger to control the asphalt paving range.

[0009] According to some embodiments of this utility model, the damping mechanism includes a liquid cavity, a piston, and a sliding groove. The liquid cavity is built into the rotating seat and is filled with damping fluid. The piston is slidably built into the liquid cavity, and a damping hole is provided through the piston along the sliding direction of the piston. The sliding groove is disposed on the inner side of the rotating seat, and a piston rod is slidably mounted on the sliding groove. One end of the piston rod passes through the liquid cavity and is fixedly connected to one end of the piston, while the other end is built into the sliding groove and fixedly connected to the side of the rotating shaft. The center of the sliding path of the piston rod, the center of the rotating shaft, and the center of the sliding path of the piston coincide.

[0010] According to some embodiments of the present invention, the damping orifice includes two horn sections and a DC section. The two horn sections are respectively disposed at both ends of the DC section, wherein the inner diameter of the horn section gradually decreases from the end away from the DC section toward the end closer to the DC section.

[0011] According to some embodiments of this utility model, the connection between the DC segment and the horn segment is smoothly transitioned.

[0012] According to some embodiments of this utility model, a plurality of sealing rubber rings are provided between the piston rod and the rotating seat.

[0013] According to some embodiments of the present invention, a stop is provided at the lower end of the fixed plate, the rotating plate can rotate and abuts against the rotating plate to constrain the position of the rotating plate, wherein when the rotating plate abuts against the stop, the rotating plate and the fixed plate are parallel.

[0014] According to some embodiments of the present invention, the material-blocking side of the rotating plate is covered with a buffer rubber pad.

[0015] According to some embodiments of this utility model, the damping fluid is silicone oil.

[0016] According to a second aspect of the present invention, a paver includes a movable baffle and a paver body as described in the first aspect embodiment. The paver body is provided with a pivotable auger. Two movable baffles are provided, which are respectively disposed at both ends of the auger. The movable baffles and the auger are spaced apart, and the baffle side is correspondingly disposed facing the auger.

[0017] The paver according to the embodiments of the present utility model has at least the following beneficial effects:

[0018] 1. When the movable baffle collides with the manhole cover on the ground, the rotating mechanism can provide room for the rotating plate to move, avoiding rigid contact that could damage the movable baffle;

[0019] 2. The damping mechanism limits the reset speed of the movable baffle through damping force, preventing the rotating plate from falling too quickly due to gravity and kicking up asphalt. This allows the movable baffle to work with the auger to control the asphalt paving range.

[0020] According to some embodiments of the present invention, the spiral spreader is provided with spiral blades, the spacing of the spiral blades gradually increases from the middle to both ends, and the paver body is also provided with a fixed baffle, which is fixed between two movable baffles, and the ground clearance of the fixed baffle is higher than the minimum ground clearance of the movable baffle.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of a paver according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the movable baffle in an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the damping mechanism of the movable baffle in an embodiment of the present invention.

[0026] 100. Movable baffle;

[0027] 110. Fixing plate; 111. Stop;

[0028] 120. Rotating plate; 121. Rotating part; 122. Bending part; 123. Material stop side; 124. Back side; 125. Buffer rubber pad;

[0029] 130. Rotating mechanism; 131. Rotating seat; 132. Rotating shaft;

[0030] 140. Damping mechanism; 141. Liquid chamber; 142. Piston; 143. Slide groove; 144. Piston rod; 145. Damping orifice; 1451. Horn section; 1452. Direct current section; 146. Damping fluid; 147. Sealing rubber ring;

[0031] 200. Paver; 210. Spiral distributor; 221. Spiral blades; 220. Fixed baffle; Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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 element 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.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Reference Figure 1 The paver of this utility model embodiment includes a movable baffle 100 and a paver body 200, wherein, referring to Figure 2The movable baffle 100 includes a fixed plate 110, a rotating plate 120, a rotating mechanism 130, and a damping mechanism 140. The fixed plate 110 is arranged along the setting direction. The rotating plate 120 includes a rotating part 121 and a bent part 122. One end of the rotating part 121 and one end of the bent part 122 are fixedly connected. The rotating plate 120 has a material-blocking side 123 and a back side 124. The bent part 122 is inclined toward the material-blocking side 123 and is set at an obtuse angle with the rotating part 121. The rotating mechanism 130 includes a rotating seat 131 and a rotating shaft 132. The rotating seat 131 is fixed on the fixed plate 110. The rotating shaft and the rotating part 121 are fixedly connected so that the end of the rotating part 121 away from the bent part 122 is rotatably connected to the fixed plate 110. The damping mechanism 140 is disposed between the rotating seat 131 and the rotating shaft 132. The damping mechanism 140 is used to limit the rotation speed of the rotating plate 120.

[0037] During paver operation, the material-blocking side 123 of the rotating plate 120 is located outside the auger spreader 210, preventing excessive outward diffusion of the asphalt mixture. When the movable baffle 100 moves with the paver above the manhole cover, the leading edge of the bent part 122 contacts the edge of the manhole cover first, and the impact force forces the rotating part 121 to rotate around the rotating shaft 132 to the back side 124. Figure 2 (A1 direction), causing the bending part 122 to lift upwards to avoid the obstacle. After the paver's front wheels pass the manhole cover, gravity provides a reset driving force to the rotating plate 120 towards the back side 124, causing the rotating plate 120 to slowly return to the initial stopping position. The hinge structure of the rotating mechanism 130 forms a movable joint, allowing the rotating plate 120 to rotate around a fixed axis upon collision.

[0038] In summary, the paver according to the embodiments of this utility model has the following effects:

[0039] 1. When the movable baffle 100 collides with the manhole cover on the ground, the rotating mechanism 130 can provide room for the rotating plate 120 to move, avoiding rigid contact that could damage the movable baffle 100;

[0040] 2. The damping mechanism 140 can limit the reset speed of the movable baffle 100 through damping force, and prevent the rotating plate 120 from falling too fast due to gravity and causing asphalt to be thrown up, so that the movable baffle 100 can work with the spiral spreader 210 to effectively control the paving range of asphalt.

[0041] Preferably, the damping fluid 146 is silicone oil. The chemical inertness of silicone oil prevents corrosion of the internal components of the fluid chamber 141, and its long lifespan reduces the frequency of maintenance; the stable viscous resistance enables the damping mechanism 140 to provide reliable damping force under different operating conditions.

[0042] In addition, in some embodiments, the rotating mechanism 130 is also provided with a torsion spring for resetting. The torsion spring is sleeved on the rotating shaft 132. Through the elastic force of the torsion spring, combined with gravity, the rotating plate 120 can be returned to the initial position. The specific method of setting the torsion spring is a conventional method used by those skilled in the art and will not be described in detail here.

[0043] Furthermore, referring to Figure 1 The paver body 200 is equipped with a pivotable auger spreader 210. Two movable baffles 100 are provided, positioned at opposite ends of the auger spreader 210, with the baffles 100 and the auger spreader 210 spaced apart. The retaining side 123 faces the auger spreader 210. Specifically, during paver operation, the auger spreader 210 pivots to spread the asphalt mixture laterally in front of the screed. The movable baffles 100 at both ends maintain a 10-15cm gap from the auger spreader 210, and the retaining side 123 faces the rotation area of ​​the auger spreader 210. When the auger spreader 210 pushes asphalt to both sides, the movable baffles 100 prevent the mixture from overflowing the paving boundary. The symmetrical arrangement of the two movable baffles 100 and the auger spreader 210 forms a double-sided constraint on the asphalt mixture.

[0044] In some embodiments, refer to Figure 3 The damping mechanism 140 includes a liquid chamber 141, a piston 142, and a slide groove 143. The liquid chamber 141 is built into the rotating seat 131 and is filled with damping fluid 146. The piston 142 is slidably built into the liquid chamber 141, and a damping hole 145 is provided through the piston 142 along the sliding direction of the piston 142. The slide groove 143 is provided on the inner side of the rotating seat 131, and the piston 142 rod is slidably mounted on the slide groove 143. One end of the piston 142 rod passes through the liquid chamber 141 and is fixedly connected to one end of the piston 142. The other end is built into the slide groove 143 and is fixedly connected to the side of the rotating shaft 132. The center of the sliding path of the piston 142 rod, the center of the rotating shaft 132, and the center of the sliding path of the piston 142 coincide.

[0045] When the rotating plate 120 rotates towards the stop side 123 under the impact force, the piston 142 rod slides along the groove 143 in an arc, pulling the piston 142 to move synchronously within the liquid chamber 141. The damping fluid 146 flows from the high-pressure chamber to the low-pressure chamber through the damping hole 145 on the piston 142. The internal resistance of the damping hole 145 forms a damping force, hindering the rotational speed. After the impact force disappears, the rotating plate 120 swings down under the action of gravity. At the same time, the viscous resistance of the damping fluid 146 constrains the movement speed of the piston 142. Gravity pushes the rotating shaft 132 to reset, allowing the rotating plate 120 to slowly return to the initial stop position. In addition, because the three centers coincide, the sliding of the piston 142 rod and the rotation of the rotating shaft 132 maintain the same radius of motion.

[0046] Preferably, refer to Figure 3 The damping orifice 145 includes two horn sections 1451 and one direct current section 1452. The two horn sections 1451 are respectively located at both ends of the direct current section 1452. The inner diameter of the horn section 1451 gradually decreases from the end furthest from the direct current section 1452 toward the end closest to it. When the damping fluid 146 flows, it flows in from the larger diameter end of the horn section 1451, is accelerated through the gradually narrowing channel, and then flows uniformly into the direct current section 1452. It then flows out through the gradually widening horn section 1451 at the other end, where it is decelerated. As the fluid velocity changes in the horn section 1451, the pressure gradient transitions evenly. This gradually changing orifice design allows the damping force to change linearly with the rotational speed. At low speeds, the resistance is low and the reset is smooth. At high speeds, the resistance increases sharply during collisions, suppressing the impact, thus achieving stepless adjustment of the damping force.

[0047] Specifically, the connection between the DC section 1452 and the horn section 1451 is smoothly transitioned. This eliminates dead zones and local high-pressure areas, prevents bubble formation and cavitation, ensures continuous and stable flow of the damping fluid 146, and maintains consistent damping force.

[0048] In order to avoid damping force attenuation due to leakage and extend the service life of damping mechanism 140, in some embodiments, a plurality of sealing rubber rings 147 are provided between piston rod 142 and rotating seat 131.

[0049] It is worth mentioning that, referring to Figure 2 The lower end of the fixed plate 110 is provided with a stop 111. The rotating plate 120 can rotate and abuts against the stop 111 to constrain the position of the rotating plate 120. When the rotating plate 120 abuts against the stop 111, the rotating plate 120 and the fixed plate 110 are parallel. When the rotating plate 120 rotates to its limit position towards the back side 124, the edge of the rotating part 121 contacts the stop 111, and the mechanical limit forces the rotating plate 120 to stop rotating. At this time, the rotating plate 120 and the fixed plate 110 are parallel, ensuring that the rotating plate 120 can accurately return to the initial stop position when resetting.

[0050] In some embodiments, refer to Figure 2 The retaining side 123 of the rotating plate 120 is covered with a buffer rubber pad 125. When the bent part 122 comes into contact with obstacles such as manhole covers, the buffer rubber pad 125 first undergoes elastic compression to absorb part of the collision energy, and then drives the rotating plate 120 to rotate as a whole, reducing the direct impact between rigid components.

[0051] In some embodiments, refer to Figure 1The auger spreader 210 is equipped with auger blades 221, the spacing of which gradually increases from the middle to both ends. The paver body 200 is also equipped with a fixed baffle 220, which is fixed between two movable baffles 100. The fixed baffle 220 is higher than the minimum ground clearance of the movable baffles 100. The variable spacing design of the auger blades 221 can eliminate the phenomenon of material accumulation in the middle or lack of material at the edges during the spreading process of the auger spreader 210. The fixed baffle 220 is higher than the movable baffles 100, which can prevent asphalt from splashing at high points. The movable baffles 100 control the bottom boundary, and the two form a double-layer limit with high and low configuration.

[0052] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A movable baffle (100), characterized in that, include: The fixing plate (110) is set along the setting direction; A rotating plate (120) includes a rotating part (121) and a bending part (122). One end of the rotating part (121) and one end of the bending part (122) are fixedly connected. The rotating plate (120) has a material-blocking side (123) and a back side (124). The bending part (122) is inclined toward the material-blocking side (123) and is set at an obtuse angle with the rotating part (121). The rotating mechanism (130) includes a rotating seat (131) and a rotating shaft (132). The rotating seat (131) is fixed on the fixed plate (110). The rotating shaft (132) and the rotating part (121) are fixedly connected so that one end of the rotating part (121) away from the bent part (122) is rotatably connected to the fixed plate (110). A damping mechanism (140) is disposed between the rotating seat (131) and the rotating shaft (132), and the damping mechanism (140) is used to limit the rotation speed of the rotating plate (120).

2. The movable baffle (100) according to claim 1, characterized in that The damping mechanism (140) includes: A liquid cavity (141) is built into the rotating seat (131), and the liquid cavity (141) is filled with damping fluid (146); The piston (142) is slidably built into the liquid chamber (141), and a damping hole (145) is provided through the piston (142) along the sliding direction of the piston (142); A slide groove (143) is provided on the inner side of the rotating seat (131). A piston rod (142) is slidably mounted on the slide groove (143). One end of the piston rod (142) passes through the liquid cavity (141) and is fixedly connected to one end of the piston (142). The other end is built into the slide groove (143) and is fixedly connected to the side of the rotating shaft (132). The center of the sliding path of the piston (142) rod, the center of the rotating shaft (132) and the center of the sliding path of the piston (142) coincide.

3. The movable baffle (100) according to claim 2, characterized in that, The damping orifice (145) includes two horn sections (1451) and one DC section (1452). The two horn sections (1451) are respectively disposed at both ends of the DC section (1452). The inner diameter of the horn section (1451) gradually decreases from the end away from the DC section (1452) toward the end closer to the DC section (1452).

4. The movable baffle (100) according to claim 3, characterized in that, The connection between the DC section (1452) and the horn section (1451) is smoothly transitioned.

5. The movable baffle (100) according to claim 2, characterized in that, A plurality of sealing rubber rings (147) are provided between the piston (142) rod and the rotating seat (131).

6. The movable baffle (100) according to claim 1, characterized in that, The lower end of the fixed plate (110) is provided with a stop (111). The rotating plate (120) can rotate and abuts against the rotating plate (120) to constrain the position of the rotating plate (120). When the rotating plate (120) and the stop (111) abut against each other, the rotating plate (120) and the fixed plate (110) are parallel.

7. The movable baffle (100) according to claim 1, characterized in that, The material-blocking side (123) of the rotating plate (120) is covered with a cushioning rubber pad (125).

8. The movable baffle (100) according to claim 2, characterized in that, The damping fluid (146) is silicone oil.

9. A paver, characterized in that, include: The paver body (200) is equipped with a pivotable auger spreader (210); The movable baffle (100) according to any one of claims 1 to 8, wherein two movable baffles (100) are provided, the two movable baffles (100) are respectively provided at both ends of the spiral feeder (210), the movable baffles (100) and the spiral feeder (210) are spaced apart, and the material blocking side (123) is correspondingly provided facing the spiral feeder (210).

10. The paver according to claim 9, characterized in that, The spiral spreader (210) is equipped with spiral blades (221), the spacing of which gradually increases from the middle to both ends. The paver body (200) is also equipped with a fixed baffle (220), which is fixed between two movable baffles (100). The fixed baffle (220) is higher than the minimum ground clearance of the movable baffles (100).

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