Crack sealing machine for repairing road cracks

Abstract

The utility model discloses a crack sealing machine for road crack repairing. The crack sealing machine for road crack repairing comprises a storage tank, a heating mechanism, a frame, a discharging pipe and a hopper. The storage tank defines a storage cavity for storing sealant; the heating mechanism is connected to the storage tank and is configured to heat the storage cavity; the frame is connected to the storage tank and used for bearing the storage tank to move. One end of the discharging pipe communicates with the storage cavity and is close to the bottom face of the storage cavity, and the discharging pipe is located on the side face, facing road maintenance personnel, of the storage tank. The hopper is connected to the side face, facing the road maintenance personnel, of the storage tank and located below a pipe opening of the discharging pipe, and the hopper is obliquely arranged downwards in the direction from the storage tank to the road maintenance personnel. When the road maintenance personnel observe the extension direction of the crack and control the movement direction of the crack pouring machine for repairing the road crack, the body does not need to be inclined, so that the road maintenance personnel can carry out crack pouring work for a long time, and the road crack repairing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of highway maintenance technology, and in particular to a crack filling machine for repairing highway cracks. Background Technology

[0002] Cracks are a common problem on highways. To prevent water from seeping into the roadbed through cracks and causing damage, using a crack sealing machine to repair cracks is a low-cost, effective, and traffic-free maintenance method. The crack sealing machine works by evenly filling the crack with sealant after grooving and cleaning the crack.

[0003] Currently, most crack sealing machines are hand-push type. Highway maintenance workers push the machine, which carries sealant, along the direction of the crack, aligning the outlet with the crack to inject the sealant. However, the outlet of existing crack sealing machines is located on the side. When pushing the machine to perform the sealing work, highway maintenance workers need to spend a long time looking sideways to observe the direction of the crack and the position of the outlet to control the direction of the machine. This puts strain on the neck and back muscles of the highway maintenance workers, requiring them to rest or be rotated after short periods of work, thus reducing the efficiency of highway crack repair. Utility Model Content

[0004] This application provides a crack filling machine for highway crack repair, which solves the technical problem in the prior art where the discharge port of the crack filling machine is located on the side of the machine, causing highway maintenance personnel to need to rest or be replaced after a short period of work, thus reducing the efficiency of highway crack repair.

[0005] The crack sealing machine for highway crack repair provided in this application includes: a storage tank defining a storage cavity for storing sealant; a heating mechanism connected to the storage tank and configured to heat the storage cavity; a frame connected to the storage tank for carrying the storage tank for movement; a discharge pipe, one end of which is connected to the storage cavity and close to the bottom surface of the storage cavity, and the discharge pipe is located on the side of the storage tank facing the highway maintenance personnel; and a hopper connected to the side of the storage tank facing the highway maintenance personnel, located below the opening of the discharge pipe, and the hopper is inclined downward from the storage tank towards the highway maintenance personnel.

[0006] In one possible implementation, the hopper is rotatably connected to the storage tank; it also includes an adjustment mechanism operably connected to the hopper and the frame for adjusting the material dispensing angle of the hopper.

[0007] In one possible implementation, the adjusting mechanism includes a first tension spring, a first rope, a first pulley, a second pulley, a first operating handle, and a first rotating bracket; the two ends of the first tension spring are respectively fixedly connected to the storage tank and the hopper; the first rotating bracket is fixedly connected to the vehicle frame, and the first operating handle is rotatably connected to the first rotating bracket; the first pulley is connected to the vehicle frame, and the axis of the first pulley is parallel to the axis of the hopper; the second pulley is connected to the vehicle frame, and the axis of the second pulley is orthogonal to the axis of the first pulley; one end of the first rope is connected to the side of the hopper opposite to the first tension spring, and the other end of the first rope passes sequentially around the first pulley and the second pulley and is connected to one end of the first operating handle.

[0008] In one possible implementation, the first operating handle includes a first arm, a second arm, a handle, and a rotating shaft; the handle and the rotating shaft are arranged in parallel and are respectively vertically connected to the two ends of the first arm, and the rotating shaft is rotatably connected to the first rotating bracket; one end of the second arm is connected to the first arm, and the other end of the second arm is connected to the first cord.

[0009] In one possible implementation, the storage tank defines a heating chamber located below and separated from the storage cavity; wherein the heating mechanism includes a support frame, a gas cylinder, and a gas heater; the support frame is fixedly connected to the side of the storage tank facing away from the road maintenance personnel; the gas cylinder is at least partially placed within the support frame; the gas heater is installed in the heating cavity and communicates with the gas cylinder via a pipeline for heating the storage cavity.

[0010] In one possible implementation, the frame includes two front wheels, a frame body, two mounting plates, and two steering wheels; the two front wheels are respectively connected to both sides of the storage tank; wherein, the frame body includes two first connecting sections, two second connecting sections, and a third connecting section; the two first connecting sections are arranged in parallel, with one end of each first connecting section connected to the bottom of the storage tank and the other end extending towards the road maintenance personnel; one end of each second connecting section is connected to the end of the first connecting section near the road maintenance personnel, and the other end extends upward; both ends of the third connecting section are respectively connected to the ends of the two second connecting sections opposite to the two first connecting sections; the two mounting plates are located between the hopper and the road maintenance personnel, respectively fixedly connected to the two first connecting sections, and the two steering wheels are respectively fixedly connected to the bottom surface of the two mounting plates.

[0011] In one possible implementation, the crack sealing machine for highway crack repair further includes a flow control mechanism operatively connected to the discharge pipe and the vehicle frame for controlling the outlet of the discharge pipe.

[0012] In one possible implementation, the flow control mechanism includes a baffle, a second tension spring, a second rope, a third pulley, a second operating handle, and a second rotating bracket; the baffle is slidably connected to the inlet of the discharge pipe in the height direction, and the baffle is at least partially located above the discharge pipe; the two ends of the second tension spring are respectively connected to the top surface of the baffle and the discharge pipe; the third pulley is installed on the side of the storage tank facing the road maintenance personnel; the second rotating bracket is connected to the vehicle frame, and the second operating handle is rotatably connected to the second rotating bracket; one end of the second rope is fixedly connected to the baffle, and the other end of the second rope passes around the third pulley and is connected to the second operating handle.

[0013] The technical solutions provided in this application embodiment have at least the following technical effects:

[0014] This application provides a crack-sealing machine for highway crack repair. When highway maintenance personnel push the machine to perform crack-sealing work, they first place sealant into the storage chamber of the tank and turn on the heating mechanism to heat the sealant until it melts. Then, the personnel push the machine frame along the crack and control the direction of the machine so that the hopper outlet is aligned with the crack. The sealant flows out from the discharge port of the discharge pipe and into the hopper, which pours the sealant into the crack. Because the discharge pipe of the crack-sealing machine is located on the side of the tank facing the personnel, the personnel do not need to tilt their bodies when observing the direction of crack extension and controlling the movement of the machine. This avoids straining the neck and back muscles, allowing for longer crack-sealing work and improving the efficiency of highway crack repair. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 and Figure 2 These are schematic diagrams of a crack sealing machine for repairing highway cracks from different perspectives, provided for some embodiments of this application.

[0017] Figure 3 Schematic diagrams of the hopper and adjusting mechanism provided for some embodiments of this application;

[0018] Figure 4 A schematic diagram of the discharge pipe and flow control mechanism provided for some embodiments of this application.

[0019] Reference numerals: 100-Storage tank; 200-Heating mechanism; 210-Support frame; 220-Gas tank; 230-Gas heater; 300-Frame; 310-Front wheel; 320-Frame body; 321-First connecting section; 322-Second connecting section; 323-Third connecting section; 330-Mounting plate; 340-Steering wheel; 400-Discharge pipe; 500-Hopper; 600-Adjusting mechanism; 610-First tension spring; 620 - First rope; 630 - First pulley; 640 - Second pulley; 650 - First operating handle; 651 - First support arm; 652 - Second support arm; 653 - Handle; 654 - Rotating shaft; 660 - First rotating bracket; 700 - Flow control mechanism; 710 - Baffle; 720 - Second tension spring; 730 - Second rope; 740 - Third pulley; 750 - Second operating handle; 760 - Second rotating bracket. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0022] This application provides a crack filling machine for repairing highway cracks, such as... Figure 1 and Figure 2 As shown, the crack filling machine for highway crack repair includes a storage tank 100, a heating mechanism 200, a frame 300, a discharge pipe 400, and a hopper 500.

[0023] Storage tank 100 is defined as a storage cavity for storing sealant. For example... Figure 1 and Figure 2 As shown, the storage tank 100 is equipped with an openable cover. Before the grouting work is carried out, the road maintenance personnel open the cover and place the sealant in the storage cavity of the storage tank 100, and then close the cover.

[0024] The heating mechanism 200 is connected to the storage tank 100 and is configured to heat the storage chamber, so that the sealant located in the storage chamber gradually turns into a liquid under the action of the heating mechanism 200, and can then flow out of the storage tank 100 and into the crack in the road.

[0025] The chassis 300 is connected to the storage tank 100 and is used to support the movement of the storage tank 100. When highway maintenance personnel use the road crack repair and sealing machine to perform crack sealing work, they push the chassis 300 along the extension direction of the crack, thereby causing the storage tank 100 to move along the extension direction of the crack.

[0026] One end of the discharge pipe 400 is connected to the storage chamber and close to the bottom surface of the storage chamber, and the discharge pipe 400 is located on the side of the storage tank 100 facing the road maintenance personnel. The discharge pipe 400 is used to allow the sealant in the storage tank 100 to flow out, and because the discharge pipe 400 is located on the side of the storage tank 100 facing the road maintenance personnel, the road maintenance personnel can observe the sealant flowing out of the discharge pipe 400 without tilting their bodies when pushing the frame 300.

[0027] The hopper 500 is connected to the side of the storage tank 100 facing the road maintenance personnel, located below the inlet of the discharge pipe 400, and is inclined downwards from the storage tank 100 towards the road maintenance personnel. The sealant flowing from the outlet of the discharge pipe 400 falls into the hopper 500, and due to the inclined arrangement of the hopper 500, the sealant gradually flows out. The road maintenance personnel can observe the location of the cracks while walking and operate the frame 300 to control the direction of travel of the road crack repair and filling machine, ensuring that the sealant flowing from the hopper 500 falls into the road cracks, thus completing the filling work.

[0028] Because the discharge pipe 400 of the crack filling machine for highway crack repair is located on the side of the storage tank 100 facing the highway maintenance personnel, the highway maintenance personnel do not need to tilt their bodies when observing the extension direction of the crack and controlling the movement direction of the crack filling machine. This avoids the neck and waist muscles of the highway maintenance personnel being stretched, allowing them to carry out crack filling work for a longer period of time and improving the efficiency of highway crack repair.

[0029] like Figure 1 and Figure 3 As shown, in some embodiments of this application, the hopper 500 is rotatably connected to the storage tank 100, and the road crack repair filling machine also includes an adjustment mechanism 600; the adjustment mechanism 600 is operatively connected to the hopper 500 and the frame 300 for adjusting the material dispensing angle of the hopper 500.

[0030] Specifically, refer to Figure 1 and Figure 3 The storage tank 100 has a vertically mounted rotating shaft on the side facing the road maintenance personnel, and the hopper 500 is connected to a sleeve fitted on the rotating shaft. The hopper 500 is rotatably connected to the storage tank 100 through the sleeve and the rotating shaft. In addition, the hopper 500 can also be rotatably connected to the storage tank 100 through a hinge or other structure.

[0031] Many cracks on highways extend in a straight line with minor bends. When highway maintenance workers use a crack repair and sealing machine to fill these cracks, they adjust the angle of the hopper 500 by operating the adjustment mechanism 600 when encountering bends in the crack. This ensures the outlet of the hopper 500 is aligned with the crack, allowing the sealant to flow into it. Because the bends in these cracks are small, the maintenance workers operate the adjustment mechanism 600 to ensure the sealant flows accurately into the crack while maintaining a straight line of movement, eliminating the need to change direction and saving manpower, thus improving the efficiency of the sealing process.

[0032] like Figure 3As shown, some embodiments of this application provide specific structural forms of the adjusting mechanism 600. The adjusting mechanism 600 includes a first tension spring 610, a first rope 620, a first pulley 630, a second pulley 640, a first operating handle 650, and a first rotating bracket 660. The two ends of the first tension spring 610 are fixedly connected to the storage tank 100 and the hopper 500, respectively. The first rotating bracket 660 is fixedly connected to the frame 300, and the first operating handle 650 is rotatably connected to the first rotating bracket 660. The first pulley 630 is connected to the frame 300, and the axis of the first pulley 630 is parallel to the axis of the hopper 500. The second pulley 640 is connected to the frame 300, and the axis of the second pulley 640 is orthogonal to the axis of the first pulley 630. One end of the first rope 620 is connected to the side of the hopper 500 away from the first tension spring 610, and the other end of the first rope 620 passes around the first pulley 630 and the second pulley 640 in sequence and is connected to one end of the first operating handle 650.

[0033] The first operating handle 650 can pull the first rope when rotated, and the first pulley 630 and the second pulley 640 can change the direction of the first rope.

[0034] When the adjustment mechanism 600 needs to be operated, the road maintenance personnel can pull in or release the first operating handle 650 while pushing the frame 300 to control the material distribution angle of the hopper 500. Specifically, with Figure 3 Taking the indicated orientation as an example, when the highway maintenance personnel pull in the first operating handle 650, the first operating handle 650 rotates on the first rotating bracket 660 and pulls one end of the first rope 620. The other end of the first rope 620 pulls the hopper 500, the first tension spring 610 is stretched, the hopper 500 rotates, and the outlet of the hopper 500 shifts to the left. When the highway maintenance personnel release the first operating handle 650, the first tension spring 610 gradually pulls the hopper 500, the hopper 500 rotates in the opposite direction, and the outlet of the hopper 500 shifts to the right.

[0035] Furthermore, the first operating handle 650 includes a first arm 651, a second arm 652, a handle 653, and a rotating shaft 654. The handle 653 and the rotating shaft 654 are arranged in parallel and are respectively vertically connected to the two ends of the first arm 651, and the rotating shaft 654 is rotatably connected to the first rotating bracket 660. One end of the second arm 652 is connected to the first arm 651, and the other end of the second arm 652 is connected to the first cord 620.

[0036] When the road maintenance personnel control the first operating handle 650, they can simultaneously push the vehicle frame 300. Specifically, when it is necessary to tighten the first cable 620, the road maintenance personnel pull the handle 653 towards the vehicle frame 300, causing the pivot 654 to rotate on the first rotating bracket 660, and the end of the second arm 652 away from the first arm 651 pulls the first cable 620; when the road maintenance personnel release the handle 653, under the action of the first tension spring 610, the pivot 654 rotates on the first rotating bracket 660, and the handle 653 moves gradually away from the vehicle frame 300.

[0037] like Figure 2 As shown, the storage tank 100 defines a heating chamber located below and separated from the storage cavity. The heating mechanism 200 includes a support frame 210, a gas cylinder 220, and a gas heater 230. The support frame 210 is fixedly connected to the side of the storage tank 100 facing away from road maintenance personnel. The gas cylinder 220 is at least partially housed within the support frame 210. The gas heater 230 is installed in the heating chamber and communicates with the gas cylinder 220 via a pipe for heating the storage cavity.

[0038] After the road maintenance personnel place the sealant into the storage chamber of the storage tank 100, they turn on the gas cylinder 220 and the gas heater 230. The gas heater 230 uses the gas stored in the gas cylinder 220 to heat the storage chamber, causing the sealant inside to melt into a liquid state, which can then flow out from the discharge pipe 400. For example, the gas heater 230 can be a single-burner gas stove.

[0039] Continue to refer to Figure 1 and Figure 2 In some embodiments of this application, the frame 300 includes two front wheels 310, a frame 320, two mounting plates 330, and two steering wheels 340. The two front wheels 310 are respectively connected to both sides of the storage tank 100. The frame 320 includes two first connecting sections 321, two second connecting sections 322, and a third connecting section 323. The two first connecting sections 321 are arranged in parallel, with one end connected to the bottom of the storage tank 100 and the other end extending towards the road maintenance personnel. One end of each of the two second connecting sections 322 is connected to the end of the first connecting section 321 near the road maintenance personnel, and the other end extends upwards. Both ends of the third connecting section 323 are connected to the ends of the two second connecting sections 322 opposite to the two first connecting sections 321. Two mounting plates 330 are located between the hopper 500 and the road maintenance personnel, respectively fixedly connected to the two first connecting sections 321, and two steering wheels 340 are respectively fixedly connected to the bottom surface of the two mounting plates 330.

[0040] Highway maintenance personnel move the road crack repair and filling machine by pushing the third connecting section 323 of the frame 320. The two front wheels 310 are located on both sides of the crack, and the two steering wheels 340 can control the direction of travel of the road crack repair and filling machine.

[0041] like Figure 1 and Figure 4 As shown, in some embodiments of this application, the crack sealing machine for highway crack repair also includes a flow control mechanism 700, which is operatively connected to the discharge pipe 400 and the frame 300 for controlling the outlet of the discharge pipe 400.

[0042] When performing crack sealing work, highway maintenance personnel can adjust the size of the outlet pipe 400 by operating the flow control mechanism 700 according to the width and depth of the crack, thereby controlling the flow of sealant so that the sealant can fill the crack and avoid wasting sealant.

[0043] like Figure 4 As shown, some embodiments of this application provide specific structural forms of the flow control mechanism 700. The flow control mechanism 700 includes a baffle 710, a second tension spring 720, a second rope 730, a third pulley 740, a second operating handle 750, and a second rotating bracket 760. The baffle 710 is slidably connected to the opening of the discharge pipe 400 in the height direction, and the baffle 710 is at least partially located above the discharge pipe 400. The two ends of the second tension spring 720 are respectively connected to the baffle 710 and the top surface of the discharge pipe 400. The third pulley 740 is installed on the side of the storage tank 100 facing the road maintenance personnel. The second rotating bracket 760 is connected to the vehicle frame 300, and the second operating handle 750 is rotatably connected to the second rotating bracket 760. One end of the second rope 730 is fixedly connected to the baffle 710, and the other end of the second rope 730 passes around the third pulley 740 and is connected to the second operating handle 750.

[0044] The flow control mechanism 700 can control the size of the outlet pipe 400 under the operation of highway maintenance personnel. Specifically, when it is necessary to increase the size of the outlet pipe 400, the highway maintenance personnel control the second operating handle 750, causing the second operating handle 750 to rotate on the second rotating bracket 760. This causes the second operating handle 750 to pull one end of the second rope 730, and the other end of the second rope 730 to pull the baffle 710, reducing the area of ​​the baffle 710 blocking the outlet pipe 400, thereby increasing the size of the outlet pipe 400. When it is necessary to decrease the size of the outlet pipe 400, the highway maintenance personnel release the second operating handle 750, and the second tension spring 720 pulls the baffle 710, increasing the area of ​​the baffle 710 blocking the outlet pipe 400, and the second operating handle 750 rotates in the opposite direction.

[0045] For example, refer to Figure 3 and Figure 4 The specific structure of the second operating handle 750 is the same as that of the first operating handle 650.

[0046] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0047] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A crack pouring machine for repairing a road crack, characterized by, The application relates to a road maintenance glue supply vehicle, which comprises the following parts: a storage tank, which defines a storage cavity for storing sealant; a heating mechanism, which is connected to the storage tank and is configured to heat the storage cavity; a frame, which is connected to the storage tank and is used for carrying the storage tank to move; a discharge pipe, one end of which is communicated with the storage cavity and is close to the bottom surface of the storage cavity, and the discharge pipe is located on the side of the storage tank which faces the road maintenance personnel; and a hopper, which is connected to the side of the storage tank which faces the road maintenance personnel, is located below the pipe opening of the discharge pipe, and is arranged to be inclined downward from the storage tank to the road maintenance personnel. The hopper is rotatably connected to the storage tank.

2. The crack pourer for highway crack repair according to claim 1, characterized by, The application further comprises: an adjusting mechanism, which is operatively connected to the hopper and the frame and is used for adjusting the scattering angle of the hopper. The adjusting mechanism comprises a first tension spring, a first wire rope, a first pulley, a second pulley, a first operating handle and a first rotating support.

3. The crack pourer for highway crack repair according to claim 2, characterized by, Two ends of the first tension spring are fixedly connected to the storage tank and the hopper respectively. The first rotating support is fixedly connected to the frame, and the first operating handle is rotatably connected to the first rotating support. The first pulley is connected to the frame, and the axis of the first pulley is parallel to the axis of the hopper. The second pulley is connected to the frame, and the axis of the second pulley is orthogonal to the axis of the first pulley. One end of the first wire rope is connected to the side of the hopper which is away from the first tension spring, and the other end of the first wire rope is sequentially wound around the first pulley and the second pulley and is connected to one end of the first operating handle. The first operating handle comprises a first branch arm, a second branch arm, a handle and a rotating shaft.

4. The crack pourer for highway crack repair according to claim 3, characterized by, The handle and the rotating shaft are arranged in parallel, are vertically connected to two ends of the first branch arm respectively, and the rotating shaft is rotatably connected to the first rotating support. One end of the second branch arm is connected to the first branch arm, and the other end of the second branch arm is connected to the first wire rope. The storage tank defines a heating cavity which is located below the storage cavity and is arranged to be separated.

5. The crack pourer of claim 1, wherein, The heating mechanism comprises a supporting frame, a gas tank and a gas heater. The supporting frame is fixedly connected to the side of the storage tank which is away from the road maintenance personnel. The gas tank is at least partially placed in the supporting frame. The gas heater is installed in the heating cavity and is communicated with the gas tank through a pipeline, and is used for heating the storage cavity. The frame comprises two front wheels, a frame body, two mounting plates and two steering wheels.

6. The crack pourer of claim 1, wherein, The two front wheels are connected to two sides of the storage tank respectively. The frame body comprises two first connecting segments, two second connecting segments and a third connecting segment. The two first connecting segments are arranged in parallel, one end of the two first connecting segments is connected to the bottom of the storage tank, and the other end of the two first connecting segments extends towards the road maintenance personnel. One end of the two second connecting segments is connected to the end of the first connecting segment which is close to the road maintenance personnel respectively, and the other end of the two second connecting segments extends upward. ​ Two ends of the third connecting section are respectively connected to the two ends of the two second connecting sections, which are away from the two first connecting sections; The two installation plates are respectively fixedly connected to the two first connecting sections and are located between the hopper and the road maintenance personnel.

7. The crack pourer of claim 1, wherein, Further comprising: A flow control mechanism operatively connected to the discharge pipe and the vehicle frame for controlling the nozzle of the discharge pipe.

8. The crack pourer for highway crack repair according to claim 7, characterized by, The flow control mechanism comprises a baffle, a second tension spring, a second wire rope, a third pulley, a second operating handle and a second rotating support; The baffle is slidably connected to the nozzle of the discharge pipe in the height direction, and the baffle is at least partially located above the discharge pipe; Two ends of the second tension spring are respectively connected to the baffle and the top surface of the discharge pipe; The third pulley is installed on the side of the storage tank facing the road maintenance personnel; The second rotating support is connected to the vehicle frame, and the second operating handle is rotatably connected to the second rotating support; One end of the second wire rope is fixedly connected to the baffle, and the other end of the second wire rope is connected to the second operating handle through the third pulley.

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