Foldable exhaust pipe leakage-proof device for paver

Abstract

The utility model discloses a foldable exhaust pipe leakage-proof device for a paver, a paver hood is provided with a through groove in a penetrating manner, an exhaust pipe penetrates through the through groove, the bottom of the exhaust pipe is hinged with the paver, the exhaust pipe swings in the through groove along the advancing direction of the paver, and the foldable exhaust pipe leakage-proof device comprises a protective cover and a connecting rod, the two ends of the protective cover are hinged to the paver cover and the connecting rod respectively, the other end of the connecting rod is hinged to the exhaust pipe, and the bottoms of the two sides of the protective cover make contact with the positions, on the two sides of the through groove, of the surface of the paver cover. The protective cover, the connecting rod and the exhaust pipe are arranged to form a connecting rod mechanism, the protective cover is in linkage with the exhaust pipe when the whole machine is in a transportation or operation state, on the basis that folding of the exhaust pipe is not affected, covering of the protective cover on the through groove and folding of the protective cover are achieved, and interference between the exhaust pipe and the protective cover is prevented by arranging the semicircular through groove; and by arranging the mounting ring, the adaptability of the device is improved.

Description

Technical Field

[0001] The utility model relates to a leak-proof material device for a foldable exhaust pipe of a paver, belonging to the technical field of pavers. Background Technique

[0002] Pavers are mainly used for road construction and maintenance. When building a new road, pavers are used to evenly spread asphalt or concrete mixtures to construct the base layer and surface layer of the road, ensuring the flatness and durability of the road. For old or damaged roads, pavers can re-spread asphalt mixtures to repair cracks and potholes and restore the road's usability.

[0003] The exhaust pipe is an important component in a paver. When the engine of the paver is working, it will generate exhaust gas, which contains harmful substances. If the exhaust gas cannot be effectively discharged, it will cause environmental pollution. The exhaust pipe reduces the impact on operators and the environment by guiding the exhaust gas to a high place or away from the operation area. However, since the exhaust pipe raises the height of the whole vehicle, there will be potential safety hazards during transportation, and it is not convenient for transportation. And since the exhaust pipe extends out from the surface of the engine hood, a long hole is usually opened on the engine hood at the position where the exhaust pipe extends for its movement. During the actual construction process of feeding the paver hopper, since the exhaust pipe is close to the hopper, asphalt is very easy to fall into the long hole of the engine hood, polluting the interior of the engine compartment and even causing failures. Summary of the Invention

[0004] Purpose of the Invention: To solve the above technical problems, the utility model provides a leak-proof material device for a foldable exhaust pipe of a paver. The device adopts a link mechanism composed of a protective cover, a connecting rod, and an exhaust pipe, realizing the functions of both folding and leak-proofing.

[0005] Technical Solution: A leak-proof material device for a foldable exhaust pipe of a paver. A through groove is opened through the engine hood of the paver, and the exhaust pipe passes through the through groove, and the bottom of the exhaust pipe is hinged to the paver. The exhaust pipe swings in the through groove along the forward direction of the paver, including a protective cover and a connecting rod. The two ends of the protective cover are respectively hinged to the engine hood of the paver and the connecting rod, and the other end of the connecting rod is hinged to the exhaust pipe. The bottom sides of the two sides of the protective cover are in contact with the surface of the engine hood on both sides of the through groove.

[0006] The utility model forms a link mechanism by setting a protective cover, a connecting rod, and an exhaust pipe. When the whole machine is in the transportation state, the exhaust pipe is in a folded state, and at this time, the protective cover is in a separated state from the engine hood of the paver. When the whole machine is in the working state, in order to prevent asphalt from entering the interior of the engine hood, the exhaust pipe is in the working state. At this time, since a connecting rod is hinged between the protective cover and the exhaust pipe, when the exhaust pipe returns to the working position, the protective cover moves accordingly and contacts the surface of the engine hood of the paver, covering the through groove. During the movement of the protective cover, it will not interfere with the exhaust pipe, thereby achieving the purpose of leak-proofing.

[0007] Preferred option: In order to prevent the dead point of the linkage mechanism, the hinge point of the connecting rod and the exhaust pipe is lower than the intersection point of the extension line between the hinge point of the connecting rod and the protective cover and the hinge point of the protective cover and the paver hood and the exhaust pipe.

[0008] Preferred option: In order to prevent interference between the protective cover and the exhaust pipe, a semi-circular through groove is provided on the upper end surface of the protective cover from the edge near the exhaust pipe side towards the discharging direction, and the semi-circular through groove is adapted to the outer circular surface of the exhaust pipe. When the exhaust pipe performs the reset operation, the outer circular surface of the exhaust pipe will enter the semi-circular through groove, thereby preventing interference between the upper end surface of the protective cover and the exhaust pipe.

[0009] Preferred option: In order to achieve the sealing of the protective cover when the exhaust pipe is operating, elastic asbestos is provided on the inner side surface of the semi-circular through groove. When the exhaust pipe is in the operating state, the outer circular surface of the exhaust pipe contacts the elastic asbestos and is extruded and deformed. When the two are separated, the elastic asbestos is restored, preventing asphalt from entering the hood interior through the semi-circular through groove and ensuring the sealing performance.

[0010] Preferred option: In order to prevent the protective cover from scratching the paint surface of the hood, contact parts are respectively provided at the bottom of the two side plates of the protective cover, the contact parts contact the surface of the paver hood, and the distance between the bottom of the two sides of the protective cover and the hood is less than 5 mm. The contact area between the protective cover and the hood is increased through the contact parts to protect the paint surface of the hood. At the same time, in order to prevent asphalt from entering the hood interior from the gap between the side plate of the protective cover and the hood, the distance between the two is set to be less than the distance of the asphalt size of 5 mm to improve the anti-leakage effect.

[0011] Preferred option: In order to facilitate the installation between the connecting rod and the exhaust pipe, an installation ring is sleeved on the exhaust pipe, and the exhaust pipe is hinged to the connecting rod through the installation ring. Welding the hinge point of the connecting rod and the exhaust pipe on the installation ring avoids welding the hinge point on the exhaust pipe. Different models need to be welded separately, and if the welding position is incorrect, it is also necessary to re-weld, which will damage the exhaust pipe and reduce the service life of the exhaust pipe.

[0012] Preferred option: In order to make the anti-leakage device applicable to different exhaust pipes, an opening is provided through the installation ring along the axial direction of the exhaust pipe, and limiting parts are respectively provided at both ends of the opening, and the limiting parts are detachably connected. The installation ring is sleeved on the exhaust pipe, and then the exhaust pipe is placed in the working position. The position of the installation ring is adjusted up and down so that the bottom of the protective cover contacts the surface of the hood, and then the limiting parts are fastened by bolts, which is convenient for the installation of the anti-leakage device. At the same time, the installation ring can be adapted to exhaust pipes of different sizes. During the process of the exhaust pipe switching states, the installation ring and the exhaust pipe are relatively stationary and do not move.

[0013] Beneficial effects: The utility model forms a linkage mechanism by setting a protective cover, a connecting rod, and an exhaust pipe. When the whole machine is in the transportation or working state, the protective cover and the exhaust pipe are linked. On the basis of not affecting the folding of the exhaust pipe, the protective cover covers the through groove and the protective cover itself folds. By setting a semi-circular through groove, the interference between the exhaust pipe and the protective cover is prevented. By setting an installation ring, the adaptability of the device is improved. Brief description of the drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0015] Figure 1 It is the assembly drawing of the protective cover of the present utility model covering the through groove;

[0016] Figure 2 It is the folding assembly drawing of the protective cover of the present utility model;

[0017] Figure 3 It is the structural diagram of the anti-leakage device of the present utility model;

[0018] Figure 4 It is the schematic diagram of the connecting rod structure of the present utility model. Detailed implementation manners

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0021] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0022] As Figures 1 - 3 shown, a leak-proof material device for a foldable exhaust pipe of a paver, a through groove 2 is formed through the paver hood 1, the exhaust pipe 3 passes through the through groove 2, and the bottom of the exhaust pipe 3 is hinged to the paver. The exhaust pipe 3 swings in the through groove 2 along the forward direction of the paver, and includes a protective cover 4 and a connecting rod 5. The two ends of the protective cover 4 are respectively hinged to the paver hood 1 and the connecting rod 5, and the other end of the connecting rod 5 is hinged to the exhaust pipe 3. The bottom sides of the two sides of the protective cover 4 are in contact with the surfaces of the paver hood 1 on both sides of the through groove 2.

[0023] By arranging the protective cover 4, the connecting rod 5 and the exhaust pipe 3 to form a connecting rod 5 mechanism, when the whole machine is in the transportation state, the exhaust pipe 3 is in a folded state, and at this time the protective cover 4 is in a separated state from the paver hood 1. When the whole machine is in the working state, in order to prevent asphalt from entering the interior of the hood 1, the exhaust pipe 3 is in the working state. At this time, since there is a connecting rod 5 hinged between the protective cover 4 and the exhaust pipe 3, when the exhaust pipe 3 is reset to the working position, the protective cover 4 moves accordingly and contacts the surface of the paver hood 1, covering the through groove 2. During the movement of the protective cover 4, there will be no interference with the exhaust pipe 3, thereby achieving the purpose of preventing material leakage.

[0024] As Figure 4 shown, in order to prevent the connecting rod 5 mechanism from having a dead point, the hinge point of the connecting rod 5 and the exhaust pipe 3 is lower than the intersection point of the extension line between the hinge point of the connecting rod 5 and the protective cover 4 and the hinge point of the protective cover 4 and the paver hood 1 and the exhaust pipe 3. The hinge point of the connecting rod 5 and the exhaust pipe 3 is point A, the hinge point of the connecting rod 5 and the protective cover 4 is point B, and the hinge point of the protective cover 4 and the paver hood 1 is point Q, that is, point A is lower than the intersection point C of the extension line of the connection line between point B and point Q and the exhaust pipe 3.

[0025] To ensure that when the exhaust pipe is erected, the protective area of the protective cover is maximized, the edge of the upper end surface of the protective cover needs to be as close to the exhaust pipe as possible. However, at the same time, it is necessary to ensure that when the exhaust pipe and the protective cover move simultaneously, the edge of the upper end surface of the protective cover will not interfere with and rub against the surface of the exhaust pipe. Therefore, the rotation speed of the protective cover shall not be slower than that of the exhaust pipe, that is, the angular velocity ω of the protective coverQ ≥ Angular velocity ω of the exhaust pipe rotation P ;

[0026] Let the fixed rotation point of the exhaust pipe be point P, the fixed rotation point of the protective cover be point Q, the hinge point of the connecting rod and the exhaust pipe be point A, the hinge point of the connecting rod and the protective cover be point B, the intersection point of the extension line of points Q and B and the exhaust pipe be point C, the distance between P and Q be L4, the distance between P and A be L1, the length of the connecting rod, i.e., the distance between A and B, be L2, the distance between B and Q be L3, and the angular velocity of the protective cover rotation be ω Q , and the angular velocity of the exhaust pipe rotation be ω P , and through the instantaneous center of velocity method, the ratio relationship between the angular velocities of the exhaust pipe and the protective cover rotation can be obtained: To satisfy ω Q ≥ ω P , then it is required that

[0027] Among them, the relative positions of P and Q, i.e., L4, are usually fixed values during the design process of this device, determined by the position of the exhaust pipe of the power system and the size of the hole to be blocked. Therefore, during the design process, it is necessary to select appropriate connecting rod length L2, as well as appropriate connection points A and B positions of the connecting rod ends with the protective cover and the exhaust pipe, i.e., L1 and L3, to make the above formula hold. Then, specific adjustments are made according to factors such as the shape of the protective cover and the angle to be rotated to design the most suitable size.

[0028] To prevent interference between the protective cover 4 and the exhaust pipe 3, a semi-circular through groove 41 is provided on the upper end surface of the protective cover 4 from the edge close to the exhaust pipe side towards the discharging direction, and the semi-circular through groove 41 is adapted to the outer circular surface of the exhaust pipe 3. When the exhaust pipe 3 performs the reset operation, the outer circular surface of the exhaust pipe 3 will enter the semi-circular through groove 41, thereby preventing interference problems between the upper end surface of the protective cover 4 and the exhaust pipe 3.

[0029] To achieve the sealing of the protective cover 4 when the exhaust pipe 3 is operating, elastic asbestos is provided on the inner side surface of the semi-circular through groove 41. When the exhaust pipe 3 is in the operating state, the outer circular surface of the exhaust pipe 3 contacts the elastic asbestos and is squeezed and deformed. When the two are separated, the elastic asbestos resumes its original state, preventing asphalt from entering the interior of the machine cover 1 through the semi-circular through groove 41 and ensuring the sealing property.

[0030] To prevent the protective cover 4 from scratching the paint surface of the engine hood 1, contact parts 42 are respectively provided at the bottom parts of the two side plates of the protective cover 4. The contact parts 42 are in contact with the surface of the paver engine hood 1, and the distance between the bottom parts of the two sides of the protective cover 4 and the engine hood 1 is less than 5 mm. By means of the contact parts 42, the contact area between the protective cover 4 and the engine hood 1 is increased to protect the paint surface of the engine hood 1. At the same time, in order to prevent asphalt from entering the interior of the engine hood 1 through the gap between the side plate of the protective cover 4 and the engine hood 1, the distance between the two is set to be less than the distance of the asphalt size of 5 mm, so as to improve the effect of preventing material leakage.

[0031] To facilitate the installation between the connecting rod 5 and the exhaust pipe 3, an installation ring 6 is sleeved on the exhaust pipe 3, and the exhaust pipe 3 is hinged to the connecting rod 5 through the installation ring 6. The hinge point between the connecting rod 5 and the exhaust pipe 3 is welded on the installation ring 6, avoiding welding the hinge point on the exhaust pipe 3. Different models need to be welded separately, and if the welding position is incorrect, it is also necessary to re-weld, which will damage the exhaust pipe 3 and reduce the service life of the exhaust pipe 3.

[0032] To make the anti-leakage device applicable to different exhaust pipes 3, an opening is provided through the installation ring 6 along the axial direction of the exhaust pipe 3, and limiting parts 61 are respectively provided at both ends of the opening. The limiting parts 61 are detachably connected. The installation ring 6 is sleeved on the exhaust pipe 3, and then the exhaust pipe 3 is placed in the working position. The position of the installation ring 6 is adjusted up and down so that the bottom of the protective cover 4 is in contact with the surface of the engine hood 1, and then the limiting parts 61 are fastened by bolts, which is convenient for the installation of the anti-leakage device. At the same time, the installation ring 6 can be adapted to exhaust pipes 3 of different sizes. During the process of the exhaust pipe 3 switching states, the installation ring 6 and the exhaust pipe 3 are relatively stationary and do not move.

[0033] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A foldable exhaust pipe leakage prevention device for a paving machine, wherein a through slot (2) is provided on a hood (1) of the paving machine, an exhaust pipe (3) passes through the through slot (2), and the bottom of the exhaust pipe (3) is hinged to the paving machine, and the exhaust pipe (3) swings in the through slot (2) along the forward direction of the paving machine, characterized in that: It comprises a protective cover (4) and a connecting rod (5), wherein the two ends of the protective cover (4) are respectively hinged to the paver hood (1) and the connecting rod (5), the other end of the connecting rod (5) is hinged to the exhaust pipe (3), and the bottoms on both sides of the protective cover (4) are in contact with the surface of the paver hood (1) on both sides of the through groove (2).

2. The foldable exhaust pipe leakage prevention device for a paver according to claim 1, characterized in that: The hinge point between the connecting rod (5) and the exhaust pipe (3) is lower than the intersection point where the extension line between the hinge point between the connecting rod (5) and the protective cover (4) and the hinge point between the protective cover (4) and the paving machine hood (1) intersects with the exhaust pipe (3).

3. The foldable exhaust pipe leakage prevention device for a paver according to claim 2, characterized in that: The upper end surface of the protective cover (4) is provided with a semicircular through groove (41) from the edge close to the exhaust pipe toward the discharge direction, and the semicircular through groove (41) is adapted to the outer circumferential surface of the exhaust pipe (3).

4. The foldable exhaust pipe leakage prevention device for a paver according to claim 3, characterized in that: The inner side surface of the semicircular through groove (41) is provided with elastic asbestos.

5. The foldable exhaust pipe leakage prevention device for a paver according to claim 4, characterized in that: Contact portions (42) are respectively provided at the bottom of the two side plates of the protective cover (4), and the contact portions (42) are in contact with the surface of the paving machine hood (1). The distance between the bottom of the two side plates of the protective cover (4) and the hood (1) is less than 5 mm.

6. The foldable exhaust pipe leakage prevention device for a paver according to claim 1, characterized in that: The exhaust pipe (3) is sleeved with a mounting ring (6), and the exhaust pipe (3) is hingedly connected to the connecting rod (5) via the mounting ring (6).

7. The foldable exhaust pipe leakage prevention device for a paver according to claim 6, characterized in that: The mounting ring (6) is provided with an opening extending through the exhaust pipe (3) in the axial direction, and limiting portions (61) are respectively provided at both ends of the opening, and the limiting portions (61) are detachably connected to each other.

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