Tamping machine for road repairing

Abstract

The invention relates to the technical field of engineering machinery, in particular to a rammer compactor for road repairing, which comprises a pressing plate, a blocking net, a sensing piece and an adjusting piece, in an initial state, the blocking net is not blocked by dust, the blocking net is gradually blocked by dust along with hammering of the pressing plate on a roadbed, the sensing piece can sense the blocking degree of the blocking net, and the adjusting piece can adjust the blocking degree of the blocking net. The adjusting piece can be combined with data sensed by the sensing piece, the adjusting rod can be shifted manually or mechanically, then the blocking net is pulled upwards through the adjusting block, the blocking net is adjusted to be in a smooth second state from a wrinkled first state, and when an engine runs, oscillation of the pressing plate can drive the blocking net to oscillate synchronously, so that the blocking net is prevented from being damaged. When the blocking net is switched to the first state, dust attached to the blocking net can be separated from the blocking net, and when the blocking net is switched to the second state, the dust blocking the blocking net can be separated from the blocking net more easily, so that the blocking net is cleaned, dust and stones are continuously prevented from falling on the pressing plate, and the construction efficiency of the pressing plate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a compactor used for road repair. Background Art

[0002] In highway construction, roadbed maintenance is extremely important, and its quality is directly related to the overall performance and service life of the road. As a common equipment for roadbed maintenance, the plate compactor mainly relies on vibration to compact the foundation in the existing technology. During the actual compaction operation, the dust and gravel on the road surface will inevitably gather on the plate. When the plate vibrates, the dust gathered on the plate will generate a large amount of dust, which will pollute the construction site and the surrounding environment and reduce the air quality. In addition, dust will enter the engine air intake system of the plate compactor, causing the engine filter to quickly clog. In order to ensure the normal operation of the engine, the filter has to be replaced frequently, which increases the manpower, material and time costs of equipment maintenance and reduces construction efficiency.

[0003] At the same time, the continuous friction between hard objects such as stones and the upper surface of the pressure plate will cause wear on the upper surface of the pressure plate. As the wear on the surface of the pressure plate increases, the compaction effect of the pressure plate will gradually decrease, affecting the compaction quality of the roadbed and even shortening the service life of the flat plate compactor, increasing the frequency and cost of equipment replacement; in addition, a large amount of noise will be generated during the vibration of the stones on the pressure plate, and the noise generated will easily have an adverse effect on the surrounding sound environment. Summary of the invention

[0004] The invention provides a compactor for road repairing, so as to solve the problem that the construction efficiency of the existing flat compactor for roadbed maintenance is easily affected.

[0005] A compactor for road repair of the present invention adopts the following technical solution: A compactor for road repair comprises a pressing plate, a blocking net, an induction part and an adjusting part.

[0006] A mounting frame is provided on the pressure plate, and a shielding cover is fixedly provided on the mounting frame, and an air inlet is formed around the shielding cover and the pressure plate; an engine is provided on the mounting frame, and the engine can drive the pressure plate to oscillate when started; the blocking net is arranged around the air inlet between the shielding cover and the pressure plate, and the blocking net has a wrinkled first state and a smooth second state; the blocking net is initially in the first state; the sensing member is used for sensing the blockage degree of the blocking net; the adjusting member is used for manually or mechanically moving the adjusting rod according to the data of the sensing member, and then pulling the blocking net upwards through the adjusting block, so as to adjust the blocking net between the first state and the second state.

[0007] Further, the sensing member includes an air extraction pump and a sensing plate; the air extraction pump is fixedly arranged on the shielding cover, the air extraction pump has an air inlet and an air outlet, the air inlet extends into the shielding cover and is used for sucking relatively clean air filtered by the shielding cover to ensure the cleanliness of the air entering the engine intake pipe, and the air outlet communicates with the external environment; the sensing plate is connected to the shielding cover, and the gas discharged at the air outlet can directly act on the sensing plate, and the gas discharged at the air outlet can push the sensing plate to swing on the shielding cover.

[0008] Further, a sliding ring is fixedly arranged at the upper end of the blocking net, and the lower end of the blocking net is fixedly connected to the pressing plate; the sliding ring is slidably connected to the shielding cover, a sliding groove is arranged on the shielding cover, a sliding block is arranged on the sliding ring, and the sliding block is slidably arranged in the sliding groove. In the initial state, the sliding block is at the lower end of the sliding groove.

[0009] Further, the adjusting member includes an adjusting rod and a transmission rod, and the transmission rod is fixedly connected to the sensing plate; one end of the adjusting rod is fixedly connected to the transmission rod, and the middle part of the adjusting rod is rotatably connected to the shielding cover; an adjusting groove is arranged at the end of the adjusting rod far away from the transmission rod, an adjusting block is fixedly arranged on the sliding ring, and the adjusting block can slide and rotate in the adjusting groove.

[0010] Further, there are two adjusting rods, and the adjusting rods are distributed on both sides of the shielding cover. The two adjusting rods are respectively fixedly connected to both ends of the transmission rod, and two adjusting blocks are fixedly arranged on the sliding ring, and each adjusting block can slide and rotate in one adjusting groove.

[0011] Further, the sliding ring has a preset weight.

[0012] Further, the engine has an intake pipe and an exhaust pipe. The intake pipe penetrates through the shielding cover. The axial direction of the end of the intake pipe is perpendicular to the axial direction of the air outlet, and the axial direction of the end of the intake pipe and the axial direction of the air outlet are in the same plane; the intake pipe is arranged above the air outlet; the exhaust pipe penetrates through the shielding cover.

[0013] Further, a humidifier is arranged on the shielding cover, and the humidifier can humidify the blocking net.

[0014] Further, the humidifier can spray water to one side of the pressing plate.

[0015] Further, a handle is arranged on the shielding cover.

[0016] The beneficial effects of the present invention are as follows: A rammer for highway repair according to the present invention includes a pressing plate, a blocking net, a sensing member, and an adjusting member. During subgrade maintenance, the pressing plate is moved onto the subgrade and the engine is started. The engine can drive the pressing plate to hammer the subgrade. In the initial state, the blocking net is in a state of blocking the air inlet, and moreover, the blocking net is in a first state of being wrinkled. The blocking net blocks the dust generated during the hammering process of the pressing plate, preventing dust and stones from falling above the pressing plate. In the initial state, the blocking net is not blocked by dust. As the pressing plate hammers the subgrade, the blocking net is gradually blocked by dust. The sensing member can sense the degree of blockage of the blocking net, and the adjusting member can, in combination with the data sensed by the sensing member, adjust the blocking net from the wrinkled first state to the smooth second state. When the engine is running, the oscillation of the pressing plate can drive the blocking net to oscillate synchronously. During the oscillation of the blocking net, the dust attached to the blocking net can be separated from the blocking net. When the blocking net changes to the second state, since the blocking net is in a straightened state compared to the first state at this time, under the oscillation effect of the pressing plate, vibration is more likely to propagate on the blocking net, and the dust blocking the blocking net is more likely to be separated from the blocking net, thereby realizing the cleaning of the blocking net, continuously preventing dust and stones from falling on the pressing plate, and further improving the construction efficiency of the pressing plate. That is, the present invention can use the blocking net to block the air inlet between the shielding cover and the pressing plate, prevent dust, stones, etc. from falling above the pressing plate, and can also, through the preliminary filtration of the blocking net, deliver clean air to the engine through the air inlet pipe, avoiding the rapid blockage of the engine filter element and ensuring the normal operation of the engine. Furthermore, the blocking net is provided with two states, namely the first and second states. That is, initially, the blocking net can still ensure the interception of dust and stones in the wrinkled state, and at the same time can ensure a certain degree of air filtration, but the effect gradually deteriorates. As more dust and other particles adhere to the blocking net, under the oscillation effect of the pressing plate, the dust will float in the space formed by the shielding cover, the blocking net, and the pressing plate, and the air delivered to the engine through the air inlet pipe will naturally no longer be clean. Therefore, by manually or with the help of machinery, the adjusting rod is toggled, and the blocking net is pulled upward through the adjusting block to switch the blocking net to the second state. Under the oscillation effect of the pressing plate, dust and other impurities on the blocking net can be quickly shaken off, and the efficient interception and filtration function can continue to be exerted, thereby continuously preventing dust and stones from falling on the pressing plate, and at the same time providing clean air for the engine and improving the overall working efficiency of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of a rammer for road repair provided by an embodiment of the present invention; Figure 2 Front view of a rammer for road repair provided by an embodiment of the present invention; Figure 3 Structural schematic diagram of a part of a rammer for road repair provided by an embodiment of the present invention after partial sectioning; Figure 4 For Figure 3 Partial enlarged view of position A in Figure 5 For Figure 3 Partial enlarged view of position B in Figure 6 State diagram of the blocking net in the first state in a rammer for road repair provided by an embodiment of the present invention.

[0019] In the figure: 110, pressure plate; 111, mounting frame; 120, engine; 121, intake pipe; 122, exhaust pipe; 130, shielding cover; 140, blocking net; 210, air extraction pump; 212, air outlet; 220, induction plate; 230, sliding ring; 240, adjusting rod; 241, adjusting groove; 250, transmission rod; 260, adjusting block; 310, humidifier; 320, handle. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The serial numbers assigned to the components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, 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", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 cannot be construed as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0023] As Figures 1 to 6 shown, a ramming machine for road repair provided by an embodiment of the present invention includes a pressing plate 110, a blocking net 140, a sensing member and an adjusting member.

[0024] The pressing plate 110 is horizontally arranged. The pressing plate 110 has an upper end surface and a lower end surface. The lower end surface of the pressing plate 110 can directly contact the roadbed. An installation frame 111 is fixedly arranged on the upper end surface of the pressing plate 110. An engine 120 is fixedly arranged on the installation frame 111. A flywheel capable of rotating is arranged on the upper end surface of the pressing plate 110. The engine 120 can drive the flywheel to rotate. When the flywheel rotates, the flywheel can drive the pressing plate 110 to oscillate on the roadbed, so as to realize the hammering and ramming of the roadbed by the pressing plate 110. A shielding cover 130 is fixedly arranged on the installation frame 111. The shielding cover 130 is arranged at an interval from the pressing plate 110. There is an air inlet between the shielding cover 130 and the pressing plate 110. The shielding cover 130 is a cavity with an opening facing downwards.

[0025] The blocking net 140 is annular. The blocking net 140 is sleeved outside the shielding cover 130. The blocking net 140 can block the air inlet. The upper end of the blocking net 140 is connected to the shielding cover 130, and the lower end of the blocking net 140 is connected to the pressing plate 110. The blocking net 140 is made of non-woven fabric. The blocking net 140 has multiple small holes to ensure that the gas in the external environment can enter the inside of the shielding cover through the air inlet. The blocking net 140 has a first state with wrinkles and a second state that is smooth in the vertical direction. The dust and stones generated when the pressing plate 110 oscillates on the roadbed can be intercepted by the blocking net 140, thereby preventing the dust and stones from falling on the upper end surface of the pressing plate 110. The blocking net 140 is initially in the first state. When the blocking net 140 is in a wrinkled state, there is an overlap at some positions of the blocking net 140. When the blocking net 140 changes from the first state to the second state, the blocking net 140 is gradually straightened. During this process, the blocking net 140 undergoes a flattening oscillation, and the dust attached to the blocking net 140 can be oscillated off the blocking net 140. In the initial state, the small holes on the surface of the blocking net 140 are not blocked by dust. When the pressing plate 110 oscillates on the roadbed, the pressing plate 110 can drive the blocking net 140 to oscillate synchronously. During the oscillation of the blocking net 140, the dust attached to the blocking net 140 can be oscillated off. When the blocking net 140 is in the second state, at this time the blocking net 140 is in a straightened state compared to the first state. Under the oscillation of the pressing plate 110, the vibration is more likely to spread on the blocking net 140, and the dust blocking the blocking net 140 is more likely to break away from the blocking net 140.

[0026] The sensing member is used to sense the degree of blockage of the blocking net 140. As the pressing plate 110 hammers the roadbed, the degree of blockage of the blocking net 140 by dust gradually increases. In this embodiment, the sensing member is a vision sensor. In the initial state, the weaving contour of the blocking net 140 is clear, and the vision sensor can clearly observe the weaving contour of the blocking net 140. As dust gradually adheres to the blocking net 140, the vision sensor can observe that the weaving contour of the blocking net 140 becomes gradually rounder. According to the roundness degree of the weaving contour of the blocking net 140, the degree of blockage of the blocking net 140 is determined.

[0027] The adjusting member is used to adjust the blocking net 140 between the first state and the second state according to the data of the sensing member. Specifically, in the initial state, the blocking net 140 is in a clean state, and the blocking net 140 is in the first state. As the blocking net 140 is gradually blocked by dust, the blocking net 140 gradually changes from the first state to the second state, and the blocking net 140 undergoes a flattening oscillation, and the dust attached to the blocking net 140 can be oscillated away from the blocking net 140. Furthermore, when the engine 120 is running, the oscillation of the pressure plate 110 can drive the blocking net 140 to oscillate synchronously. During the oscillation of the blocking net 140, the dust attached to the blocking net 140 can be detached from the blocking net 140. When the blocking net 140 is changed to the second state, the dust blocking the blocking net 140 is more easily detached from the blocking net 140, thereby achieving the cleaning of the blocking net 140 and continuously preventing dust and stones from falling on the pressure plate 110, thereby improving the construction efficiency of the pressure plate 110.

[0028] The tamping machine for road repair of the present invention moves the pressing plate 110 to the roadbed during roadbed maintenance, and starts the engine 120. The engine 120 can drive the pressing plate 110 to hammer the roadbed. In the initial state, the blocking net 140 is in the first wrinkled state. The blocking net 140 blocks the dust generated during the hammering of the pressing plate 110 to prevent dust and stones from falling on the pressing plate 110. In the initial state, the blocking net 140 is not blocked by dust. As the pressing plate 110 hammers the roadbed, the blocking net 140 is gradually blocked by dust. The sensing element can sense the degree of blockage of the blocking net 140, and the adjusting element can adjust the blocking net 140 by hand in combination with the data sensed by the sensing element. The adjusting rod 240 is manually or mechanically moved, and then the blocking net 140 is pulled upward through the adjusting block 260 to adjust the blocking net 140 from the wrinkled first state to the smooth second state. When the engine 120 is running, the oscillation of the pressure plate 110 can drive the blocking net 140 to oscillate synchronously. During the oscillation of the blocking net 140, the dust attached to the blocking net 140 can be separated from the blocking net 140. When the blocking net 140 is transformed into the second state, the dust blocking the blocking net 140 is more easily separated from the blocking net 140, thereby achieving the cleaning of the blocking net 140 and continuously preventing dust and stones from falling on the pressure plate 110, thereby improving the construction efficiency of the pressure plate 110.

[0029] In one embodiment, the sensing member includes an air extraction pump 210 and a sensing plate 220. The air extraction pump 210 is fixedly disposed on the shielding cover 130. The air extraction pump 210 has an air inlet and an air outlet 212. The air inlet extends into the shielding cover 130, and the air outlet 212 communicates with the external environment. Specifically, under the action of the blocking net 140, the interior of the shielding cover 130 is in a relatively sealed state. If the gas in the external environment wants to enter the interior of the shielding cover 130, the gas in the external environment needs to pass through the filtration of the blocking net 140. The air extraction pump 210 is disposed outside the shielding cover 130. When the air extraction pump 210 is started, the air extraction pump 210 extracts the gas inside the shielding cover 130 through the air inlet. Subsequently, the gas is discharged into the external environment through the air outlet 212 of the air extraction pump 210. The sensing plate 220 is connected to the shielding cover 130. The sensing plate 220 can swing on the shielding cover 130. The gas discharged at the air outlet 212 can directly act on the sensing plate 220. The gas discharged at the air outlet 212 can blow the sensing plate 220, causing the sensing plate 220 to swing on the shielding cover 130. When the gas pressure blown out at the air outlet 212 is different, the degree of blockage of the blocking net 140 is different, and the swinging amplitude of the sensing plate 220 on the shielding cover 130 is different. In the initial state, the degree of blockage of the blocking net 140 is in the lowest state, and the swinging amplitude of the sensing plate 220 on the shielding cover 130 is in the maximum state. As the dust blocks the blocking net 140, the swinging amplitude of the sensing plate 220 on the shielding cover 130 gradually decreases. The staff judges the degree of blockage of the blocking net 140 by the swinging amplitude of the sensing plate 220 on the shielding cover 130.

[0030] In one embodiment, a sliding ring 230 is fixedly disposed at the upper end of the blocking net 140. The sliding ring 230 is always in contact with the side wall of the blocking net 140. The lower end of the blocking net 140 is fixedly connected to a pressing plate 110. The sliding ring 230 is slidably connected to the shielding cover 130. Specifically, a sliding groove is provided on the shielding cover 130. The sliding groove is vertically disposed. A sliding block is fixedly disposed on the sliding ring 230. The sliding block is slidably disposed in the sliding groove. In the initial state, the sliding block is at the lower end of the sliding groove, so that the blocking net 140 is in a first state of being folded. When the degree of blockage of the blocking net 140 gradually increases, the adjusting rod 240 is toggled manually or by means of a machine. Then, the sliding block on the sliding ring 230 gradually slides upward along the sliding groove. During the upward sliding of the sliding ring 230, the blocking net 140 gradually changes from the first state of being folded to the second state of being smooth.

[0031] In one embodiment, the adjusting member includes an adjusting rod 240 and a transmission rod 250. The transmission rod 250 is fixedly connected to the induction plate 220. One end of the adjusting rod 240 is fixedly connected to the transmission rod 250. Specifically, the end of the adjusting rod 240 is fixedly connected to the end of the transmission rod 250. The middle of the adjusting rod 240 is rotatably connected to the outer side wall of the shielding cover 130. The adjusting rod 240 and the transmission rod 250 provide an installation basis for the induction plate 220. An adjusting groove 241 is provided at one end of the adjusting rod 240 away from the transmission rod 250. The adjusting groove 241 extends along the length direction of the adjusting rod 240. An adjusting block 260 is fixedly provided on the sliding ring 230. One end of the adjusting block 260 can slide and rotate in the adjusting groove 241. When the adjusting rod 240 rotates on the outer side wall of the shielding cover 130, the adjusting rod 240 can pull the adjusting block 260 to move in the vertical direction, so that the sliding ring 230 moves up and down on the outer side wall of the shielding cover 130.

[0032] In one embodiment, there are two adjusting rods 240. The two adjusting rods 240 have the same length. The two adjusting rods 240 are distributed on both sides of the shielding cover 130. The two adjusting rods 240 are respectively fixedly connected to both ends of the transmission rod 250. The two adjusting rods 240 are parallel to each other. The middle parts of the two adjusting rods 240 are simultaneously rotatably connected to the outer side wall of the shielding cover 130. The rotation axes of the two adjusting rods 240 connected to the shielding cover 130 are on the same straight line. Two adjusting blocks 260 are fixedly provided on the sliding ring 230. The two adjusting blocks 260 are distributed on both sides of the shielding cover 130, so that each adjusting block 260 corresponds to an adjusting rod 240. Each adjusting block 260 can slide and rotate in an adjusting groove 241. By providing two adjusting rods 240 and two adjusting blocks 260, when the gas discharged from the air outlet 212 of the air pump 210 acts on the induction plate 220, through the transmission of the transmission rod 250, the two adjusting rods 240 rotate synchronously on the outer side wall of the shielding cover 130. The two adjusting rods 240 can pull the two adjusting blocks 260 to move in the vertical direction, and further make the sliding ring 230 move smoothly on the outer side wall of the shielding cover 130.

[0033] In one embodiment, the sliding ring 230 has a preset weight. In the initial state, the sliding ring 230 is subject to its own gravity, so that the slider on the sliding ring 230 is at the lower end of the sliding groove, thereby ensuring that the blocking net 140 is in the first wrinkled state in the initial state.

[0034] In one embodiment, the engine 120 has an intake pipe 121 and an exhaust pipe 122. The intake pipe 121 penetrates through the shielding cover 130 and is in communication with the external environment. The axial direction of the end of the intake pipe 121 is perpendicular to the axial direction of the air outlet 212, and the axial direction of the end of the intake pipe 121 and the axial direction of the air outlet 212 are in the same vertical plane. The intake pipe 121 is arranged above the air outlet 212. Specifically, the air outlet 212 of the air extraction pump 210 is vertically arranged, the axial direction of the end of the intake pipe 121 is horizontally arranged, the intake pipe 121 and the air outlet 212 of the air extraction pump 210 are in the same vertical plane, and the intake pipe 121 is arranged above the air outlet 212 of the air extraction pump 210. When the air extraction pump 210 discharges air from the air outlet 212, a part of the discharged air at the air outlet 212 can enter the interior of the intake pipe 121 to provide clean air for the engine 120. At the same time, when the gas discharged from the air outlet 212 blows towards the intake pipe 121, the flowing gas can intercept the dust around the intake pipe 121, thereby preventing the dust around the intake pipe 121 from entering the interior of the intake pipe 121. The exhaust pipe 122 penetrates through the shielding cover 130, and the waste gas generated during the operation of the engine 120 is discharged into the external environment through the exhaust pipe 122.

[0035] In one embodiment, a humidifier 310 is provided on the shielding cover 130. The humidifier 310 can humidify the blocking net 140 through a plurality of nozzles extending near the blocking net 140. When the blocking net 140 is in a wet state, during the startup process of the air extraction pump 210, when dust in the external environment adheres to the blocking net 140, the dust is likely to form lumps on the blocking net 140. When the pressing plate 110 drives the blocking net 140 to oscillate synchronously, the lumped dust is more likely to break away from the blocking net 140.

[0036] In one embodiment, the humidifier 310 can spray water to one side of the pressing plate 110 through a plurality of nozzles extending near the blocking net 140. After the humidifier 310 sprays water to one side of the pressing plate 110, during the process of the pressing plate 110 hammering the roadbed, the dust floating on the roadbed into the air environment is reduced.

[0037] In one embodiment, a handle 320 is provided on the shielding cover 130. When the staff hammers the roadbed, the staff can guide the pressing plate 110 through the handle 320 to ensure that the pressing plate 110 hammers the roadbed in a specific area.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rammer for road repair, characterized in that, Comprising: A pressing plate, on which an installation frame is provided. A shielding cover is fixedly arranged on the installation frame, and an air inlet is formed around between the shielding cover and the pressing plate; An engine is arranged on the installation frame, and when the engine starts, it can drive the pressing plate to oscillate. A blocking net, which is arranged around the air inlet between the shielding cover and the pressing plate to block the air inlet. The blocking net has a first state with folds and a second state with smoothness; The blocking net is initially in the first state. An induction member, which is used to sense the degree of blockage of the blocking net. An adjustment member, which is used to adjust the blocking net between the first state and the second state according to the data of the induction member.

2. The rammer for road repair according to claim 1, characterized in that: The induction member includes an air extraction pump and an induction plate; The air extraction pump is fixedly arranged on the shielding cover. The air extraction pump has an air inlet and an air outlet. The air inlet extends into the interior of the shielding cover, and the air outlet communicates with the external environment; The induction plate is connected to the shielding cover, and the gas discharged from the air outlet can directly act on the induction plate, and the gas discharged from the air outlet can push the induction plate to swing on the shielding cover.

3. A rammer for road repair according to claim 2, characterized in that: A sliding ring is fixedly arranged at the upper end of the blocking net, and the lower end of the blocking net is fixedly connected to the pressing plate; The sliding ring is slidably connected to the shielding cover. A chute is arranged on the shielding cover, and a slider is arranged on the sliding ring. The slider is slidably arranged in the chute. In the initial state, the slider is at the lower end of the chute.

4. A rammer for highway repair according to claim 3, characterized in that: The adjustment member includes an adjustment rod and a transmission rod. The transmission rod is fixedly connected to the induction plate; One end of the adjustment rod is fixedly connected to the transmission rod, and the middle part of the adjustment rod is rotatably connected to the shielding cover; An adjustment groove is arranged at the end of the adjustment rod away from the transmission rod. An adjustment block is fixedly arranged on the sliding ring, and the adjustment block can slide and rotate in the adjustment groove.

5. A rammer for road repair according to claim 4, characterized in that: There are two adjustment rods, which are distributed on both sides of the shielding cover. The two adjustment rods are respectively fixedly connected to both ends of the transmission rod. Two adjustment blocks are fixedly arranged on the sliding ring, and each adjustment block can slide and rotate in one adjustment groove; When the state is switched, the adjustment rod is toggled manually or by means of a machine, and then the blocking net is pulled upward through the adjustment block, and the blocking net is adjusted from the first state with folds to the second state with smoothness.

6. A rammer for road repair according to claim 3, characterized in that: The sliding ring has a preset weight.

7. A rammer for road repair according to claim 2, characterized in that: The engine has an intake pipe and an exhaust pipe. The intake pipe penetrates through the shielding cover. The axis direction of the end of the intake pipe is perpendicular to the axis direction of the air outlet, and the axis direction of the end of the intake pipe and the axis direction of the air outlet are in the same plane; The intake pipe is arranged above the air outlet; The exhaust pipe penetrates through the shielding cover.

8. A rammer for road repair according to claim 1, characterized in that: A humidifier is arranged on the shielding cover, and the humidifier can humidify the blocking net through a plurality of nozzles extending near the blocking net.

9. The rammer for road repair according to claim 8, characterized in that: The humidifier can spray water to one side of the pressing plate through a plurality of nozzles extending near the blocking net.

10. A rammer for road repair according to claim 1, characterized in that: A handle is arranged on the shielding cover.

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