Hot melting grouting machine with telescopic material injection pipe

Abstract

The utility model relates to the technical field of road crack repairing equipment, in particular to a hot melting grouting machine with a telescopic material injection pipe, which comprises a hot melting grouting machine main body and a grouting pump arranged on the hot melting grouting machine main body, the grouting pump is communicated with the hot melting grouting machine main body through a suction pipe, a grouting hose is fixedly arranged at the discharge end of the grouting pump, and the telescopic material injection pipe is arranged in the grouting hose. A telescopic material injection pipe assembly is detachably installed at the end of the grouting hose and comprises a first pipe body, a second pipe body arranged on the first pipe body in a sleeving mode and connected with the first pipe body in a sliding mode and a third pipe body arranged on the second pipe body in a sleeving mode and connected with the second pipe body in a sliding mode. The second pipe body and the third pipe body are driven by an electric push rod to stretch out and draw back, and an end pipe is fixedly installed at the bottom end of the third pipe body. Length adjustment operation can be carried out through stretching out and drawing back, and grouting can be carried out smoothly.

Description

Technical Field

[0001] This utility model relates to the technical field of road crack repair equipment, specifically to a hot melt grouting machine with a telescopic injection pipe. Background Technology

[0002] With the acceleration of urbanization and the continuous expansion of municipal road construction, road maintenance and repair have become increasingly important. Over long-term use, roads are prone to cracking due to factors such as vehicle loads, climate change, and foundation settlement. These cracks not only affect the aesthetics of the road but also allow rainwater to seep into the roadbed, accelerating structural damage, shortening the road's lifespan, and even endangering traffic safety. Therefore, timely repair of road cracks is a crucial task in municipal road maintenance.

[0003] Currently, road crack repair technologies mainly include crack filling, crack sealing, and grouting. Among them, hot-melt grouting is widely used due to its advantages such as high construction efficiency, good repair effect, and strong durability. The hot-melt grouting machine, as the core equipment of the hot-melt grouting method, directly affects the repair quality of road cracks.

[0004] Utility model patent CN220927464U discloses an asphalt road crack repair machine, including a tractor, a hot melt box mounted on the tractor for melting repair materials, a grouting gun connected to the hot melt box via a hose, a support for the grouting gun, the support for the grouting gun including two symmetrically arranged support legs, the grouting gun positioned between the two support legs, forming a triangle between the grouting gun, either support leg, and the ground, a caster wheel fixedly installed at the end of each support leg near the ground, a limiting component for supporting the hose at the connection point between the grouting gun and the hose, and a support frame for supporting the hose at the connection point between the hot melt box and the hose. During construction, the hose can be lifted without the need for a dedicated person, reducing labor costs.

[0005] While this technical solution has the advantage of eliminating the need for a dedicated person to hold the hose during construction, reducing labor costs, most current hot-melt grouting machines still have some shortcomings in use. For example, the grouting pump on the hot-melt grouting machine is connected to the corresponding grouting head via a hose, and the length of the hose at the grouting head is not adjustable. Although the hose has a certain length to meet the filling needs of most surface cracks, when encountering deep cracks that extend laterally below the ground, the inability to adjust the length of the hose at the grouting head makes it difficult for the grouting head to penetrate deep into the bottom of the crack and fill the internal transverse cracks sequentially, affecting the subsequent compaction effect. If the grouting head is suspended in the air and placed into the deep crack by holding the hose, the soft hose material can cause uncontrollable grout spraying from the grouting head during the grouting process. In addition, if the initial length of the hose at the grouting head is set too long, it will also cause inconvenience in carrying and transporting the device. In view of this, we propose a hot-melt grouting machine with a telescopic grouting pipe. Utility Model Content

[0006] The purpose of this invention is to provide a hot melt grouting machine with a telescopic injection pipe to solve the defects mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A hot-melt grouting machine with a telescopic injection pipe includes a hot-melt grouting machine body and a grouting pump installed on the hot-melt grouting machine body. The grouting pump is connected to the hot-melt grouting machine body through a suction pipe. A grouting hose is fixedly installed at the discharge end of the grouting pump. A telescopic injection pipe assembly is detachably installed at the end of the grouting hose. The telescopic injection pipe assembly includes a first pipe body, a second pipe body that is sleeved on the first pipe body and slidably connected to the first pipe body, and a third pipe body that is sleeved on the second pipe body and slidably connected to the second pipe body. The extension and retraction of the second pipe body and the third pipe body are driven by an electric push rod.

[0009] Preferably, a fixed connector is fixedly installed at the end of the grouting hose, and a threaded connector is fixedly installed at the top end of the first pipe body, with the threaded connector and the fixed connector being threadedly connected.

[0010] Preferably, a limiting plate is fixedly installed on the top of the first tube, and the limiting plate is used to limit the retraction distance of the second tube and the third tube.

[0011] Preferably, a heat sink is fixedly installed on the side of the limiting plate, and the electric push rod is fixedly installed on the bottom wall of the heat sink, with the telescopic shaft of the electric push rod passing through the bottom plate of the heat sink.

[0012] Preferably, the top of the heat sink is connected to the outside, and a top cover is detachably installed on the top surface of the heat sink.

[0013] Preferably, the heat sink is provided with a plurality of heat sinks on the side of the heat sink, and the side of the heat sinks extends to the inner wall of the heat sink.

[0014] Preferably, an end tube is fixedly installed at the bottom end of the third tube, and the inner diameter of the end tube is smaller than the inner diameter of the second tube.

[0015] This feature allows the electric push rod to retract, which in turn retracts the third tube. As the end of the third tube abuts against the end of the second tube, it can further retract the second tube.

[0016] Preferably, a fixed support is fixedly installed at the end of the telescopic shaft of the electric push rod, and the fixed support is fixedly installed on the bottom end of the third tube.

[0017] Preferably, a limiting ring is fixedly installed on the bottom of both the first tube and the second tube, a fixing ring is fixedly installed on the bottom surface of the limiting ring, and an inner wall scraping cylinder is fixedly installed on the bottom surface of the fixing ring. The inner wall scraping cylinder is located in the corresponding second tube and the third tube and is slidably connected.

[0018] This feature allows for the scraping of the inner walls of the second and third tubes after they have been retracted, preventing impurities from adhering to the inner walls and solidifying, which could affect subsequent secondary extension.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model, by setting up a telescopic injection pipe assembly consisting of a first pipe body, a second pipe body, and a third pipe body, and driven by an electric push rod to extend and retract, realizes the function of flexibly adjusting the length of the injection head pipe body according to the crack depth. It enables the injection head to penetrate deep into the bottom of deep cracks below the ground and to accurately fill laterally extended cracks, thereby improving the accuracy of grouting and the compaction effect, and solving the problem of difficult construction caused by the non-adjustable length of traditional injection heads.

[0021] 2. This utility model limits the retraction distance of the second and third tubes by setting a limiting plate at the top of the first tube, and at the same time, the electric push rod is installed in a heat dissipation box with heat sink, top cover and top connected to the outside. This realizes safe limiting of the telescopic injection tube assembly's telescopic operation and effective heat dissipation of the electric push rod, thereby ensuring stable operation of the equipment, extending the service life of the equipment and reducing the probability of failure.

[0022] 3. By setting a limiting ring, a fixing ring, and an inner wall scraping cylinder at the bottom of the first and second pipe bodies, this utility model achieves automatic scraping and cleaning of the inner walls of the second and third pipe bodies when they are retracted, preventing impurities such as slurry from adhering and solidifying and affecting secondary extension and use, thus ensuring smooth extension and contraction of the injection pipe, improving the reliability of equipment use and the quality of subsequent grouting. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the telescopic injection tube assembly of this utility model;

[0025] Figure 3 This is an exploded structural diagram of the telescopic injection tube assembly of this utility model;

[0026] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a partial structural schematic diagram of the present invention;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Main body of hot melt grouting machine; 10. Grouting pump; 11. Suction pipe; 12. Grouting hose; 13. Fixed joint;

[0030] 2. Telescopic injection tube assembly; 20. First tube body; 201. Threaded joint; 21. Limiting plate; 22. Heat sink box; 221. Heat sink; 222. Top cover; 23. Electric push rod; 231. Fixed support; 24. Second tube body; 25. Third tube body; 251. End tube; 26. Limiting ring; 27. Fixed ring; 271. Inner wall scraping cylinder. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5This utility model provides a technical solution: a hot melt grouting machine with a telescopic injection pipe, including a hot melt grouting machine body 1 and a grouting pump 10 installed on the hot melt grouting machine body 1. The grouting pump 10 is connected to the hot melt grouting machine body 1 through a suction pipe 11. A grouting hose 12 is fixedly installed at the discharge end of the grouting pump 10. A telescopic injection pipe assembly 2 is detachably installed at the end of the grouting hose 12. The grouting material in the hot melt grouting machine body 1 is drawn by the grouting pump 10 through the suction pipe 11 and then transported to the telescopic injection pipe assembly 2 through the grouting hose 12. This realizes the complete process of grouting material from storage to delivery to the crack, providing a stable grouting system for road crack repair and ensuring the smooth progress of hot melt grouting operations.

[0033] In this embodiment, the telescopic injection tube assembly 2 includes a first tube body 20, a second tube body 24 sleeved on the first tube body 20 and slidably connected to the first tube body 20, and a third tube body 25 sleeved on the second tube body 24 and slidably connected to the second tube body 24. The telescopic movement of the second tube body 24 and the third tube body 25 is driven by an electric push rod 23, thereby enabling the telescopic movement to complete the length adjustment operation.

[0034] Specifically, a fixed connector 13 is fixedly installed at the end of the grouting hose 12, and a threaded connector 201 is fixedly installed at the top of the first pipe body 20. The threaded connector 201 and the fixed connector 13 are threadedly connected, which facilitates the installation and disassembly of the telescopic grouting pipe assembly 2, realizes rapid adaptation to grouting requirements under different working conditions, and achieves the effect of improving the flexibility of equipment use and the convenience of maintenance.

[0035] like Figure 3 and Figure 4 As shown, a limiting plate 21 is fixedly installed on the top of the first tube 20. The limiting plate 21 is used to limit the retraction distance of the second tube 24 and the third tube 25, so that the second tube 24 and the third tube 25 are limited during the retraction process, avoiding excessive retraction that could cause structural damage. This achieves control over the telescopic injection tube assembly 2's telescopic stroke, ensuring safe operation of the equipment and extending the service life of the telescopic injection tube assembly.

[0036] like Figure 4 As shown, a heat sink 22 is fixedly installed on the side of the limiting plate 21, and an electric push rod 23 is fixedly installed on the bottom wall of the heat sink 22. The telescopic shaft of the electric push rod 23 passes through the bottom plate of the heat sink 22. Multiple heat sinks 221 are provided on the side of the heat sink 22, and the side of the heat sinks 221 extends to the inner wall of the heat sink 22. This effectively dissipates the heat generated by the electric push rod 23 during operation, prevents the electric push rod 23 from degrading in performance or being damaged due to overheating, and achieves the effect of ensuring the stable operation of the electric push rod and improving the overall reliability of the equipment.

[0037] like Figure 4 As shown, the top of the heat sink 22 is connected to the outside. The top cover 222 is detachably installed on the top surface of the heat sink 22 by multiple fastening screws, which facilitates the fixing and disassembly operations.

[0038] like Figure 3 As shown, an end tube 251 is fixedly installed at the bottom end of the third tube 25. The inner diameter of the end tube 251 is smaller than the inner diameter of the second tube 24, which enables the electric push rod 23 to retract, thereby driving the third tube 25 to retract. After the end of the third tube 25 abuts against the end of the second tube 24, it can further drive the second tube 24 to retract.

[0039] like Figure 3 As shown, a fixed support 231 is fixedly installed at the end of the telescopic shaft of the electric push rod 23. The fixed support 231 is fixedly installed on the bottom tube of the third tube 25, realizing a stable connection between the electric push rod 23 and the third tube 25. This ensures that the electric push rod 23 can stably drive the third tube 25 to move when it extends or retracts, thus ensuring the precise and reliable extension and retraction of the telescopic injection tube assembly 2.

[0040] In this embodiment, a limiting ring 26 is fixedly installed on the bottom of both the first tube 20 and the second tube 24. A fixing ring 27 is fixedly installed on the bottom surface of the limiting ring 26, and an inner wall scraping cylinder 271 is fixedly installed on the bottom surface of the fixing ring 27. The inner wall scraping cylinder 271 is located inside the corresponding second tube 24 and third tube 25 and is slidably connected. During the retraction process of the second tube 24 and the third tube 25, the inner wall scraping cylinder 271 scrapes and cleans the inner wall, realizing the automatic removal of impurities attached to the inner wall, avoiding the solidification of impurities and affecting the secondary extension, thus ensuring smooth extension and retraction of the injection tube and improving the subsequent performance of the equipment.

[0041] It is worth noting that the first pipe body 20, the second pipe body 24, and the third pipe body 25 need to be cleaned after each grouting to prevent internal impurities from solidifying and affecting the performance.

[0042] It is worth noting that the wall thickness of the second tube 24 and the third tube 25 is between 0.2cm and 0.35cm, so that the overall weight of the second tube 24 and the third tube 25 is not too heavy, which helps to ensure that the electric push rod 23 can normally drive the second tube 24 and the third tube 25 to extend outward.

[0043] Finally, it should be noted that the electric push rod 23, the corresponding control system, and the external power supply involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle in this utility model. The electrical connection between each electrical component is completed in the order of operation. The detailed connection method is a technology known in the art.

[0044] When using the hot melt grouting machine with telescopic injection pipe of this utility model, first move the hot melt grouting machine body 1 to the road crack repair site, and connect the grouting material in the hot melt grouting machine body 1 to the grouting pump 10 through the suction pipe 11. If the site conditions require it, the telescopic injection pipe assembly 2 can be installed at the end of the grouting hose 12 through the threaded connection between the fixed joint 13 and the threaded joint 201.

[0045] According to the depth and direction of the crack, start the electric push rod 23 to drive the second pipe body 24 and the third pipe body 25 to slide and extend on the first pipe body 20, adjust the length of the injection pipe, so that the end pipe 251 can be accurately inserted into the appropriate position inside the crack. After the adjustment is completed, start the grouting pump 10. The grouting material is extracted through the suction pipe 11 and injected into the crack through the grouting hose 12 and the telescopic injection pipe assembly 2 to complete the grouting operation.

[0046] After grouting is completed, the grouting pump 10 is turned off, and the electric push rod 23 is started to retract the second pipe 24 and the third pipe 25. During this process, the inner wall scraping cylinder 271 automatically cleans the impurities on the inner wall of the second pipe 24 and the third pipe 25. After each grouting is completed, the first pipe 20, the second pipe 24 and the third pipe 25 need to be cleaned to ensure the subsequent use effect of the equipment.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hot melt grouting machine with telescopic grouting pipe, comprising a hot melt grouting machine body (1) and a grouting pump (10) arranged on the hot melt grouting machine body (1), characterized in that: The grouting pump (10) is connected to the hot melt grouting machine body (1) through a suction pipe (11). A grouting hose (12) is fixedly installed at the discharge end of the grouting pump (10). A telescopic injection pipe assembly (2) is detachably installed at the end of the grouting hose (12). The telescopic injection pipe assembly (2) includes a first pipe body (20), a second pipe body (24) sleeved on the first pipe body (20) and slidably connected to the first pipe body (20), and a third pipe body (25) sleeved on the second pipe body (24) and slidably connected to the second pipe body (24). The extension and retraction of the second pipe body (24) and the third pipe body (25) are driven by an electric push rod (23).

2. The hot melt dispensing machine with retracting tube according to claim 1, characterized in that: The grouting hose (12) is fixedly installed with a fixed connector (13) at its end, and the first pipe body (20) is fixedly installed with a threaded connector (201) at its top end. The threaded connector (201) and the fixed connector (13) are threadedly connected.

3. The hot melt dispensing machine with retracting tube according to claim 1, characterized in that: A limiting plate (21) is fixedly installed on the top tube of the first tube (20). The limiting plate (21) is used to limit the retraction distance of the second tube (24) and the third tube (25).

4. The hot melt dispensing machine with retracting tube according to claim 3, characterized in that: A heat sink box (22) is fixedly installed on the side of the limiting plate (21), and an electric push rod (23) is fixedly installed on the bottom wall of the heat sink box (22). The telescopic shaft of the electric push rod (23) passes through the bottom plate of the heat sink box (22).

5. The hot melt dispensing machine with retracting tube according to claim 4, characterized in that: The top of the heat sink (22) is connected to the outside, and a top cover (222) is detachably installed on the top surface of the heat sink (22).

6. The hot melt dispensing machine with retracting tube according to claim 5, characterized in that: The heat sink (22) has multiple heat sinks (221) on its side, and the side of the heat sinks (221) extends to the inner wall of the heat sink (22).

7. The hot melt dispensing machine with retracting tube of claim 1, wherein: The bottom end of the third tube (25) is fixedly installed with an end tube (251), the inner diameter of which is smaller than the inner diameter of the second tube (24).

8. The hot melt dispensing machine with retracting tube of claim 1, wherein: The telescopic shaft end of the electric push rod (23) is fixedly installed with a fixed support (231), which is fixedly installed on the bottom tube of the third tube (25).

9. The hot melt dispensing machine with retracting tube of claim 1, wherein: Limiting rings (26) are fixedly installed on the bottom of the first tube (20) and the second tube (24). A fixing ring (27) is fixedly installed on the bottom surface of the limiting ring (26). An inner wall scraping cylinder (271) is fixedly installed on the bottom surface of the fixing ring (27). The inner wall scraping cylinder (271) is located in the corresponding second tube (24) and the third tube (25) and is slidably connected.

Images