A road construction caulking machine

Abstract

The present invention relates to the technical field of highway gap repair, specifically a road construction caulking machine, comprising: a caulking machine body, a caulking gun, and a loading vehicle, a caulking gun for transmitting caulking glue is fixedly installed on the caulking machine body, a loading vehicle is rotatably installed on the discharge port of the caulking gun, a leakage groove for filling the caulking glue into the crack is provided on the loading vehicle, a solenoid valve is fixedly installed on the leakage groove, a discharge hopper is fixedly installed on the solenoid valve, a detection unit for detecting whether the caulking glue overflows the crack is provided in the discharge hopper, the detection unit is electrically connected to the solenoid valve, and after detecting that the caulking glue overflows the crack, the detection unit controls the solenoid valve to close and stop outputting the caulking glue. The present invention utilizes the conductive property of the caulking glue, after the caulking glue overflows the crack, the electrode is immersed in the caulking glue, so that the circuit in the detection tube is turned on, thereby controlling the solenoid valve to close, stop outputting the caulking glue, and prevent the caulking machine from outputting excessive caulking glue at a certain point in the gap.

Description

Technical Field

[0001] The invention relates to the technical field of highway gap repairing, in particular to a road construction gap filling machine. Background Art

[0002] In recent years, my country's expressways and urban and rural roads have developed rapidly, making people's travel and work more convenient. However, the maintenance of cracks on the surface of expressways has long been a thorny problem that has troubled many maintenance units. If the cracks are not handled in time, they will cause large-scale cracking and loose potholes on the road surface, reducing the quality and life of the road surface. Severe cracks and potholes on the road surface may even endanger vehicles on the road surface, causing personal injury or property loss.

[0003] According to the provisions of Section "6.2 Crack Repair" in the "Technical Specifications for Highway Asphalt Pavement Maintenance", before filling cracks with a width greater than 3mm, it is recommended to use a pavement grooving machine to widen the cracks along the direction of the cracks, and cut the irregular cracks into grooves with a width and depth of not less than 10mm. Then use a caulking machine to fill the widened cracks. The method of use is to add caulking glue into the caulking machine. After the caulking machine further processes the caulking glue, the caulking glue is guided to the road surface through a caulking gun. The caulking gun is usually operated by a worker, and the glue outlet of the caulking gun is aimed at the gap in the road surface. However, the trend of each crack on the road surface is random, making it difficult for workers to operate the caulking gun to move completely along the crack, and it is difficult to control the injection time of the caulking gun at a certain point in the crack. Moreover, when the worker is injecting glue, due to the obstruction of the caulking gun or other parts, it is difficult for the worker to observe whether the caulking glue has overflowed the crack, which easily causes the caulking glue to overflow the road surface. Even if the worker avoids the blind spot of vision through other injection methods, it is difficult for the worker to quickly react and close the caulking gun at the moment when the caulking glue overflows the crack. In addition, since the dynamic viscosity of the caulking glue (such as SK-90# asphalt with 5.5% star modifier added) at 160° is 275Pa·s, it cannot spread quickly to both sides of the crack in a short time, which will also affect the worker's control of the injection time, causing the caulking glue to overflow the road surface. Ultimately, the effective use ratio of the caulking glue is low, resulting in an increase in the cost of road caulking.

[0004] Therefore, a road construction caulking machine is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a road construction caulking machine, which utilizes the conductive property of caulking glue. After the caulking glue overflows from the crack, the electrode is immersed in the caulking glue, so that the circuit in the detection tube is turned on, thereby controlling the solenoid valve to close and stop outputting the caulking glue, thereby preventing the caulking machine from outputting excessive caulking glue at a certain point in the gap, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A road construction caulking machine comprises: a caulking machine body, a caulking gun, and a loading cart. The caulking machine is fixedly provided with a caulking gun for transmitting caulking glue, the discharging port of the caulking gun is rotatably provided with a loading cart, and the loading cart is provided with a leakage groove for filling the caulking glue into cracks.

[0008] Preferably, a solenoid valve is fixedly installed on the leakage groove, a discharge hopper is fixedly installed on the solenoid valve, a plurality of fixed rods are fixedly installed in the discharge hopper, a detection cylinder is fixedly installed on the plurality of fixed rods, a detection unit is provided in the detection cylinder for detecting whether the caulking glue overflows from the crack, the detection unit is electrically connected to the solenoid valve, after detecting that the caulking glue overflows from the crack, the detection unit controls the solenoid valve to close and stops outputting the caulking glue, and a guide unit is provided in the detection cylinder for controlling the discharge hopper to move along the direction of the crack.

[0009] Investigate the specific extension direction and depth of the cracks on the road in advance, design the slot size, use a road slotting machine to widen the cracks, and cut the irregular cracks into slots of the same width and depth, which is conducive to better filling of the cracks with caulking glue. Use a hair dryer to blow away the sand and dust in the widened gaps, increase the contact area between the caulking glue and the cracks, and improve the quality of the caulking. The caulking glue is loaded into the caulking machine. After being processed, the caulking glue is discharged from the caulking machine through the caulking gun into the trolley. The worker controls the moving direction of the trolley through the caulking gun, so that the trolley moves along the gaps on the road. A leakage groove is opened at the bottom of the loading car, and the caulking glue falls into the widened gap on the road through the leakage groove to complete the filling of the road gap.

[0010] The solenoid valve is installed on the trough at the bottom of the loading truck. The solenoid valve is normally open. The discharge hopper and the loading truck are connected through the solenoid valve. The caulking glue flows out of the discharge hopper and falls into the gap on the road surface. The discharge hopper is flush with the ground, and the bottom of the detection cylinder is flush with the bottom wall of the discharge hopper. When the worker operates the caulking gun and stays at a certain place in the crack of the road surface for too long during the caulking process, the caulking glue overflows from the crack and triggers the detection unit in the discharge hopper. The connection between the loading truck and the discharge hopper is cut off by the solenoid valve to prevent excessive caulking glue from being filled in a crack on the road surface.

[0011] The detection unit includes two electrodes fixedly mounted on the bottom of the inner wall of the detection cylinder, the two electrodes are electrically connected to the solenoid valve, and the connecting line of the two electrodes intersects with the axis of the detection cylinder. The discharge hopper includes a fixed tube fixedly mounted on the solenoid valve, a movable tube movably mounted on the fixed tube, a support block fixedly mounted on the movable tube, the bottom wall of the support block is arc-shaped, and the vertical distance between the bottom of the electrode and the bottom of the support block is 1 to 3 mm.

[0012] Furthermore, the side surface of the electrode and the inner wall of the detection cylinder are on the same plane.

[0013] Furthermore, the interior of the detection cylinder is sprayed with a Teflon coating.

[0014] A disconnected circuit is provided in the detection cylinder, and two electrodes for connecting the circuit are installed at the bottom of the detection cylinder. Since the caulking glue has a certain conductivity, when the caulking glue in the gap overflows, the electrodes in the detection cylinder are immersed in the caulking glue, and the circuit in the detection cylinder is connected. The circuit is electrically connected to the solenoid valve, and when the circuit is open, the solenoid valve will cut off the connection between the loading truck and the discharge hopper to prevent the caulking glue from continuing to be injected into the crack that has been filled, thereby avoiding the loss of caulking glue.

[0015] Since the curing process of the road surface after paving is not uniform, the road surface has slight undulations. In addition, there are many impurities such as gravel attached to the road surface, which causes the distance between the detection tube and the ground to constantly change as the discharge hopper moves with the loading truck, thus affecting the detection tube's judgment on whether the caulking glue overflows from the cracks.

[0016] To this end, the discharge hopper is arranged as a retractable structure, and the caulking glue falls from the moving tube into the gap on the road surface. The diameter of the discharge port of the moving tube is smaller than the width of the widened crack in the road surface. The moving tube is supported by the support block to keep it flush with the ground. The bottom wall of the support block is arc-shaped. After contacting the impurities on the road surface that are difficult to remove, the moving tube is lifted upward to pass over the impurities, preventing the discharge hopper from being blocked and the loading vehicle from being unable to move. In addition, the support block is made of metal and also acts as a counterweight. When the road surface is undulating, it ensures that the bottom of the feed hopper is kept within a set distance from the ground.

[0017] The bottom wall of the support block is in contact with the ground, so that the distance between the electrode and the ground is kept at 1 to 3 mm. When the distance between the electrode and the ground is 1 mm, the electrode can quickly sense the overflow of the caulking glue and close the solenoid valve to reduce the loss of the caulking glue. However, if the electrode is too close to the ground, it will cause the electrode to frequently contact with impurities on the ground, causing defects on the surface of the electrode and affecting the detection of the electrode. When the electrode is 3 mm away from the ground, although the contact with impurities on the ground is reduced, when the electrode is turned on, the potting glue overflows more.

[0018] In the above text, the method of detecting whether the crack is filled is based on the conductivity of the caulking glue itself. In addition, the high density of the caulking glue can be used to set a floating block in the detection tube. The floating block is also located at the bottom of the detection tube. The bottom of the detection tube is flush with the ground. The floating block is provided with a conductive block that cooperates with the two electrodes. When the floating block is located at the bottom of the detection tube, the conductive block does not contact the electrodes. When the caulking glue overflows from the crack, the floating block in the detection tube will be lifted for a distance, so that the conductive block connects the two electrodes together, and the circuit in the detection tube is connected, which in turn closes the solenoid valve and reduces excessive use of caulking glue in a crack at a certain place.

[0019] After the caulking glue immerses the electrode, if the caulking glue remaining on the electrode is not discharged in time, the caulking glue on the electrode will solidify. The solidified layer will affect the contact between the liquid caulking glue and the electrode, thereby affecting the response speed of the solenoid valve.

[0020] To this end, the end face of the electrode is set flush with the inner wall of the detection tube so that the caulking glue can flow better to the bottom of the detection tube. In addition, the inner wall of the detection tube is electrostatically sprayed with Teflon. The surface ability of this coating is extremely low, which reduces the adhesion of the caulking glue in the detection tube. At the same time, the end face of the electrode is also polished to prevent the caulking glue from remaining on the surface of the electrode, thereby ensuring the accuracy of the electrode when detecting caulking glue overflow.

[0021] Preferably, the guiding unit comprises a connecting pipe rotatably mounted on the leakage groove, the solenoid valve is fixedly mounted on an end of the connecting pipe away from the leakage groove, a rotating block is rotatably mounted on the top wall of the detection cylinder, a probe is fixedly mounted on the rotating block, the probe extends into the crack, a baffle is fixedly mounted on the side wall of the rotating block outside the detection cylinder, and a side plate is fixedly mounted on the middle part of the probe.

[0022] In the prior art, since the cracks have a winding path, in order to quickly fill the cracks and reduce labor intensity, workers set the width of the trough of the loading truck to be larger than the width of the cracks. In this way, the workers can fill the road surface by controlling the loading truck to move in a straight line. Although the labor intensity of the workers is reduced, most of the caulking glue does not fall into the gap, resulting in waste.

[0023] Before filling the road, the cracks were treated with a pavement grooving machine. The end of the probe was inserted into half the depth of the crack. Utilizing the rotatable feature of the connecting tube, when the probe followed the movement of the loading vehicle and came into contact with the crack, the connecting tube swung toward the direction of the crack, so that the discharge hopper was always located above the crack, and the caulking glue falling from the feed hopper also fell into the crack, reducing the waste of caulking glue while maintaining the original moving direction of the loading vehicle.

[0024] It is worth noting that when the probe contacts the crack, half of the discharge hopper is located outside the crack. At this time, the flow direction of the caulking glue in the discharge hopper is adjusted by the adjustment unit so that the flowing caulking glue falls into the crack.

[0025] It should be noted that when the bending angle of the crack is large, the lateral force of the probe is greatly reduced, which will make it difficult for the connecting pipe to swing sideways. At this time, the worker should manually control the moving direction of the loading vehicle to prevent the probe from being stuck in the crack. In actual operation, it is rare for cracks to be 90°, and when using a road grooving machine to widen the crack, the corner of the crack can be appropriately blunted to prevent the probe from being stuck in the crack.

[0026] The baffle is semicircular in shape, and its diameter is equal to the diameter of the discharge hopper. When the probe is vertical, the baffle remains vertical in the discharge hopper, and after the probe contacts the side wall of the crack, the probe rotates around the rotating block, so that the baffle seals the half of the discharge hopper outside the crack, so that the outlet of the caulking glue is prevented from falling on the road surface. In addition, due to the existence of the side plate, after the probe contacts the crack, the probe will rotate along the direction of the crack, and stop rotating after the side plate is rotated to be parallel to the side wall of the crack. The side surfaces of the baffle and the side plate are parallel to each other, so that the baffle is parallel to the side wall of the crack. When the probe rotates around the rotating block, the baffle can always adaptively adjust the position of the sealing discharge hopper, so that it can adaptively adjust the flow direction of the caulking glue in the discharge hopper. Since the probe is placed obliquely in the crack, it can also drain the caulking glue and reduce the content of the caulking glue in the crack.

[0027] It is worth mentioning that due to the strict conditions under which the side panels and probes are used, the above-mentioned effects can only be exerted in cracks that have been processed by a pavement grooving machine.

[0028] Furthermore, a plurality of balls are rotatably mounted on the side plate, and the diameter of the balls is larger than the diameter of the probe.

[0029] Multiple ball bearings are rotatably installed on the side plate, and the diameter of the ball bearings is larger than the diameter of the probe, so that after the side plate contacts the crack, the friction with the side wall of the crack is offset or reduced through the rotation of the ball bearings, thereby avoiding direct contact between the probe and the crack and increasing the service life of the probe. The probe itself has the function of draining the caulking glue, which can make the caulking glue move downward quickly and increase the filling speed of the crack.

[0030] Preferably, the connecting pipe includes a swinging pipe rotatably mounted on the drain groove, a movable pipe is slidably mounted on the fixed pipe, a plurality of magnets 1 are fixedly mounted on the swinging pipe, and a plurality of magnets 2 that attract each other with the magnet 1 are fixedly mounted on the movable pipe.

[0031] When the bending angle of the crack is small, magnet 1 and magnet 2 fit each other, and the movable tube is located inside the swing tube. When the probe contacts the side wall of the crack, the swing tube will rotate. Since the probe needs to move in the crack, the moving distance of the probe is not equal to the moving distance of the loading vehicle. At this time, the movable tube is separated from the swing tube to compensate for the position of the discharge hopper to ensure that the probe can move along the direction of the crack during the movement of the loading vehicle. Since the workers move slowly when grouting, even if the moving distance of the movable tube is greater than that of the loading vehicle, the crack can be filled. Moreover, since the overflow of the grouting glue can be detected by the electrode, the discharge amount of the grouting glue can be appropriately increased during grouting to meet the grouting needs.

[0032] It is worth mentioning that due to the direction of the widened crack, there is always a path in a short distance that is the same as the moving direction of the loading vehicle. When the probe cracks at this location, the movable tube can be reset to avoid the movable tube being in a stretched state all the time, ensuring that the moving stroke of the movable tube in the fixed tube is sufficient to meet the needs of filling the crack.

[0033] Similarly, there are many ways to make the movable tube move in the swinging tube and automatically reset, such as through a spring connection. The advantage of this solution is that after a long period of use, the caulking machine will have defects to varying degrees inside, resulting in a small amount of metal impurities in the caulking glue. When the caulking glue flows through magnet one or magnet two, the impurities in the caulking glue are retained in the movable tube by relying on their own magnetism, thereby ensuring the cleanliness of the caulking glue.

[0034] Furthermore, a protective net is fixedly installed on the bottom of the detection cylinder.

[0035] There are many ways to fill cracks in the road surface. When filling frequently used roads, the road surface quality requirements are relatively high. The operator will process the cracks through a road surface grooving machine and then fill the cracks with caulking glue, so that the adhesion of the caulking glue in the cracks is higher. However, when filling urban and rural roads, usually only the gaps between hair dryers are used to blow away impurities such as gravel. However, due to the complex structure in the cracks and the fact that the hair dryer can only blow air into the cracks laterally, when blowing away impurities in the cracks, some impurities with smaller mass are stuck in the cracks and cannot be removed. When filling this type of gap, the overflowing caulking glue can easily bring out the impurities in the cracks. When impurities adhere to the detection tube, especially when they adhere to the electrode, it will affect the contact between the electrode and the caulking glue, affecting the detection of the caulking glue overflowing from the cracks. For this reason, a protective net is set at the bottom of the detection tube. The mesh of the protective net is smaller than the diameter of the electrode to ensure that the caulking glue quickly submerges the electrode when it overflows, while preventing the impurities from completely blocking the electrode.

[0036] It is worth mentioning that due to the strict conditions for the use of side panels and probes, when the cracks are not treated with a pavement grooving machine, the side panels and probes are difficult to play the expected role. Therefore, when filling urban and rural roads, the probes, side panels and other components can be removed. Moreover, since the probes need to rotate during operation, they conflict with the protective net installed in the detection tube. Therefore, when using them, they need to be selected according to the specific road conditions. When filling cracks treated by a pavement grooving machine, a detection unit with a probe is used, otherwise a detection unit with a protective net is used.

[0037] For the detection unit with a probe, when filling the gap, the mobile tube can move along the crack with the movement of the loading vehicle. While preventing the caulking glue from overflowing the crack, the outlet diameter of the mobile tube can be set to be the same as the diameter of the crack to prevent the caulking glue from falling directly on the road surface when filling the crack. However, after the road grooving machine has widened the crack, due to human or natural factors, it is inevitable that there will be residual or later impurities in the crack after treatment. During the caulking process, the electrodes in the detection tube are still at risk of being covered by impurities.

[0038] For roads between urban and rural areas, whose cracks are not processed by the road grooving machine, a detection unit with a protective net is used. Since it conflicts with the characteristic that the probe needs to rotate during operation, the probe, rotating block and baffle are not used when processing the cracks in this case. In order to reduce the labor intensity of workers and improve work efficiency, when filling the gap, the loading vehicle is controlled to move in a straight line as much as possible, which makes the discharge port of the mobile pipe must be larger than the width of the crack. Although the protective net can be used to prevent the electrode from being covered by impurities during the process of filling the crack, some of the caulking glue is wasted because it falls directly on the road surface.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. A detection unit is set on the loading truck. Utilizing the conductive property of the caulking glue, when the worker is caulking and the caulking glue overflows from the crack, the electrode is immersed in the caulking glue, so that the circuit in the detection cylinder is turned on, thereby controlling the solenoid valve to close and stop outputting the caulking glue, preventing the caulking machine from outputting excessive caulking glue at a certain point in the gap.

[0041] 2. Taking advantage of the telescopic and rotatable characteristics of the connecting tube, when the probe follows the movement of the loading cart and contacts the crack, the connecting tube will swing towards the direction of the crack. When the loading cart moves in a straight line, the moving trajectory of the hopper will be the same as the direction of the crack. When the diameter of the discharge port of the hopper is equivalent to the width of the crack, it is ensured that all the caulking glue falls into the crack, reducing the waste of caulking glue.

[0042] 3. After coming into contact with the impurities on the road surface that are difficult to remove, the moving tube is lifted upward and passes over the impurities to prevent the discharge hopper from being blocked and the loading vehicle from being unable to move. In addition, the support block is made of metal and also acts as a counterweight. When the road surface is undulating, it ensures that the bottom of the feed hopper remains within a set distance from the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is the overall structure diagram of the present invention;

[0044] Figure 2 This is the structural diagram of the loading vehicle;

[0045] Figure 3 This is the internal structure diagram of the discharge hopper;

[0046] Figure 4 for Figure 3 A magnified view of the structure at center;

[0047] Figure 5 for Figure 3 Middle DD – Sectional view;

[0048] Figure 6 for Figure 5 Partial structural diagram of

[0049] Figure 7 for Figure 6 A magnified view of the structure at B in the middle;

[0050] Figure 8 for Figure 6 Middle CC section view;

[0051] Fig. 9 This is the state diagram of the baffle when the probe contacts the crack;

[0052] Fig.10 It is a structural diagram of the detection tube in the second embodiment.

[0053] In the figure: 1. caulking gun; 2. loading cart; 3. connecting pipe; 4. discharge hopper; 5. solenoid valve; 6. trough; 7. support block; 8. electrode; 9. protective net; 10. caulking machine body; 301. swing pipe; 302. movable pipe; 303. magnet one; 304. magnet two; 401. baffle; 402. rotating block; 403. fixed rod; 404. detection tube; 405. probe; 406. ball; 407. side plate; 408. fixed pipe; 409. movable pipe. DETAILED DESCRIPTION

[0054] The aspects and features of the present disclosure and the methods for achieving these aspects and features will be apparent, however, the present disclosure is not limited to the embodiments disclosed below and can be implemented in various forms. This embodiment is provided to help those of ordinary skill in the art to fully understand the present disclosure, and the present disclosure is limited only within the scope of the appended claims.

[0055] Example 1: Filling the cracks processed by the road surface slotting machine, please refer to Figures 1 to 9 The present invention provides a road construction caulking machine, and the technical solution is as follows:

[0056] The swing tube 301 is rotatably installed on the leakage groove 6 of the charging vehicle 2, a slide groove is provided on the side wall of the swing tube 301, a magnet 1 303 is glued in the slide groove, a magnet 2 304 is glued on the inner wall of the movable tube 302, and the magnet 2 304 is slidably installed in the slide groove of the swing tube 301, and the end of the movable tube 302 away from the leakage groove 6 is threadedly installed with the solenoid valve 5, the solenoid valve 5 uses the brand KAS model AF0729, the solenoid valve 5 is in the normally open state, the bottom of the solenoid valve 5 is threadedly installed with a fixed tube 408, and a movable tube 409 is slidably installed on the fixed tube 408, and four fixed rods 403 are glued in the movable tube 409, and the fixed rod 403 adopts 3 04 stainless steel, and the four fixed rods 403 are all located on the same plane, the detection tube 404 is glued to the four fixed rods 403, the inner wall of the detection tube 404 is inlaid with two electrodes 8, the surface of the electrode 8 is polished and needs to reach A1 mirror grade, the two electrodes 8 are electrically connected to the solenoid valve 5, the end face of the electrode 8 is flush with the inner wall of the detection tube 404, the top wall of the detection tube 404 is hinged with a rotating block 402, the bottom of the rotating block 402 is welded with a probe 405, the top of the rotating block 402 is welded with a baffle 401, the bottom of the probe 405 is welded with two side plates 407, and the side plates 407 are inlaid with four freely rotatable balls 406.

[0057] Before starting to caulking, the direction and depth of the cracks on the road surface are surveyed, the groove size is designed, and the road surface groover is used to widen the cracks along the direction, and the irregular cracks are cut into grooves of the same width and depth. After completion, the sand and dust in the grooves are blown out with a hair dryer. The caulking glue is loaded into the caulking machine. After the caulking glue is heated and processed, the worker controls the caulking gun 1 to output the caulking glue to the loading vehicle 2.

[0058] When caulking, the probe 405 on the loading cart 2 is placed in the crack, and the worker holds the end of the caulking gun 1 and pulls the loading cart 2 to move. The caulking glue passes through the swing tube 301, the movable tube 302, the fixed tube 408 and the movable tube 409 in sequence, and finally falls into the processed crack to complete the filling of the crack.

[0059] When the probe 405 contacts the side wall of the crack, the probe 405 rotates around the rotating block 402. When the probe 405 rotates the side plate 407 to be parallel to the side wall of the crack, the ball 406 replaces the probe 405 to contact the side wall of the crack. Under the action of the side plate 407, the probe 405 cannot rotate around its own axis. Since the baffle 401 is semicircular and its diameter is equal to the diameter of the moving tube 409, when the probe 405 rotates around the rotating block 402 to the maximum amplitude, since the probe 405 needs to be in the crack, the probe 405 cannot rotate around its own axis. When the probe 405 moves in the crack, the moving distance and direction of the probe 405 are different from those of the loading cart 2. At this time, the movable tube 302 separates from the swing tube 301 and compensates for the position of the discharge hopper 4 to ensure that the probe 405 can move along the direction of the crack during the movement of the loading cart 2. Half of the movable tube 409 is located outside the crack, but after the baffle 401 rotates around the rotating block 402 as the probe 405 rotates, the movable tube 409 is generally located outside the crack and is generally isolated, so that the caulking glue falling from the movable tube 409 falls into the crack.

[0060] When the caulking glue overflows the crack, the electrode 8 is set at the bottom of the detection cylinder 404 by utilizing the conductive property of the caulking glue. When the caulking glue submerges the two electrodes 8, the circuit in the detection cylinder 404 is turned on, and the solenoid valve 5 is controlled to close, thereby cutting off the connection between the moving tube 409 and the loading cart 2.

[0061] Example 2: Filling the cracks that have not been processed by the road surface slotting machine, please refer to Fig.10 .

[0062] When filling up urban and rural roads, usually only a hair dryer is used to blow away impurities such as gravel between the gaps. However, due to the complex structure in the cracks and the fact that the hair dryer can only blow air sideways into the cracks, when blowing away the impurities in the cracks, some impurities with smaller mass are stuck in the cracks and cannot be removed. When filling this type of gap, the overflowing caulking glue can easily bring out the impurities in the cracks. When the impurities adhere to the detection tube 404, especially when they adhere to the electrode 8, it will affect the contact between the electrode 8 and the caulking glue, thereby affecting the electrode 8's detection of whether the caulking glue has overflowed from the cracks.

[0063] Since the conditions for using the side plate 407 and the probe 405 are relatively strict, when the cracks are not treated with a road grooving machine, the side plate 407 and the probe 405 are difficult to play the expected role. Therefore, when filling the urban and rural roads, the probe 405, the side plate 407 and other components can be removed. Moreover, since the probe 405 needs to rotate and swing during operation, it conflicts with the protective net 9 installed in the detection tube 404. Therefore, when using it, it is necessary to choose according to the specific road conditions. When filling the cracks treated by the road grooving machine, use the detection unit with the probe 405, otherwise use the detection unit that drives the protective net 9.

[0064] Therefore, in this embodiment, the probe 405, the baffle 401, and the rotating block 402 are removed, and a protective net 9 is set at the discharge port of the movable tube 409. The mesh of the protective net 9 is smaller than the diameter of the electrode 8, ensuring that the caulking glue can quickly immerse the electrode 8 when it overflows, while preventing impurities from completely blocking the electrode 8.

[0065] For the first embodiment, when filling the gap, the moving tube 409 can move along the crack as the loading vehicle 2 moves. While preventing the caulking glue from overflowing the crack excessively, the outlet diameter of the moving tube 409 can be set to be the same as the diameter of the crack, so as to prevent the caulking glue from falling directly on the road surface when filling the crack. However, after the road surface grooving machine has widened the crack, due to human or natural factors, it is inevitable that there will be residual impurities in the crack after treatment, or other impurities that enter later. During the caulking process, the electrode 8 in the detection tube 404 is still at risk of being covered by impurities.

[0066] Compared with the second embodiment, in order to reduce the labor intensity of workers and improve work efficiency, when filling the gap, the loading vehicle 2 is controlled to move in a straight line as much as possible, which requires that the discharge port of the movable tube 409 must be larger than the width of the crack. Although the protective net 9 can prevent the electrode 8 from being covered by impurities during the process of filling the crack, part of the caulking glue is wasted because it falls directly on the road surface.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate and facilitate technicians to understand the technical solutions of the present invention, rather than to limit them; the technical solutions recorded in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the inventive motivation of the present invention.

Claims

1. A road construction caulking machine, comprising: A caulking machine body (10), a caulking gun (1), and a loading trolley (2), wherein the caulking gun (1) for transmitting caulking glue is fixedly mounted on the caulking machine body (10), the loading trolley (2) is rotatably mounted on the discharge port of the caulking gun (1), and the loading trolley (2) is provided with a leakage groove (6) for filling the caulking glue into the crack; It is characterized by further comprising: The leakage groove (6) is fixedly mounted with an electromagnetic valve (5), and a discharge hopper (4) is fixedly mounted on the electromagnetic valve (5). A plurality of fixed rods (403) are fixedly mounted inside the discharge hopper (4), and a detection cylinder (404) is fixedly mounted on the plurality of fixed rods (403). A detection unit for detecting whether the caulking glue overflows from the crack is arranged inside the detection cylinder (404). The detection unit is electrically connected to the electromagnetic valve (5). After detecting that the caulking glue overflows from the crack, the detection unit controls the electromagnetic valve (5) to close and stop outputting the caulking glue; The detection unit comprises two electrodes (8) fixedly mounted on the bottom of the inner wall of the detection cylinder (404), the two electrodes (8) are electrically connected to the electromagnetic valve (5), the connecting line of the two electrodes (8) intersects with the axis of the detection cylinder (404), the discharge hopper (4) comprises a fixed tube (408) fixedly mounted on the electromagnetic valve (5), a movable tube (409) is movably mounted on the fixed tube (408), a support block (7) is fixedly mounted on the movable tube (409), the bottom wall of the support block (7) is arc-shaped, the vertical distance between the bottom wall of the electrode (8) and the bottom wall of the support block (7) is 1 to 3 mm, the side surface of the electrode (8) and the inner wall of the detection cylinder (404) are in the same plane, and the interior of the detection cylinder (404) is sprayed with a Teflon coating; The detection tube (404) adopts two different structures according to the corresponding road conditions: A guide unit for controlling the discharge hopper (4) to move along the crack is provided in the detection cylinder (404); The guiding unit comprises a connecting pipe (3) rotatably mounted on the leakage groove (6), the solenoid valve (5) is fixedly mounted on one end of the connecting pipe (3) away from the leakage groove (6), a rotating block (402) is rotatably mounted on the top wall of the detection cylinder (404), a probe (405) is fixedly mounted on the rotating block (402), the probe (405) extends into the inside of the crack, a baffle (401) is fixedly mounted on the side wall of the rotating block (402) located outside the detection cylinder (404), and a side plate (407) is fixedly mounted in the middle of the probe (405); The connecting pipe (3) comprises an oscillating pipe (301) rotatably mounted on the drain groove (6); a movable pipe (302) is slidably mounted on the fixed pipe (408); a plurality of first magnets (303) are fixedly mounted on the oscillating pipe (301); and a plurality of second magnets (304) that attract the first magnets (303) are fixedly mounted on the movable pipe (302); A plurality of balls (406) are rotatably mounted on the side plate (407), and the balls (406) are used to prevent the probe (405) from directly contacting the side wall of the crack; A protective net (9) is fixedly mounted on the bottom of the detection cylinder (404); When filling cracks created by the pavement groover, use a detection unit with a probe; When the cracks are not treated with a pavement grooving machine, a detection unit driving a protective net is used.

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