Mortar anchor rod grouting device
By designing an exhaust pipe, conveying components, and a specific interface for the mortar anchor grouting device, the problems of clogging and incomplete grouting in mortar grouting machines were solved, achieving efficient and reliable grouting results and improving construction quality.
Patent Information
- Application Number
- CN202520126782.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-01-20
AI Technical Summary
In existing technologies, mortar anchor grouting machines are prone to clogging by sand and gravel, the pressure is difficult to control, and there is a lack of air venting measures, resulting in incomplete grouting and affecting the construction quality.
A mortar anchor grouting device was designed, which includes a grout delivery pipe, an exhaust pipe, a conveying pipe, and a conveying assembly. The air in the mortar is discharged through the exhaust pipe, the mortar is pushed by the conveying assembly, and a rubber sheet and a check plate are installed in the conveying pipe to improve sealing and reliability. The interface design prevents sand and gravel from affecting the grouting.
It improves the fullness of mortar, prevents pipe bursts, enhances the reliability and sealing effect of grouting, extends the service life of the device, and ensures the quality of grouting.
Smart Images
Figure CN223938097U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel construction technology, and in particular to a mortar anchor grouting device. Background Technology
[0002] Mortar anchors are the most common type of rock reinforcement structure in tunnel support systems. When installing mortar anchors, holes are usually drilled in the surrounding rock first, the mortar anchor is inserted into the hole, mortar is injected into the hole, and after the mortar solidifies, a bolt is installed at the end of the mortar anchor outside the hole to provide support resistance.
[0003] Currently, grouting machines are mainly used to inject mortar into the borehole. Since mortar anchors are filled with mortar, ordinary grouting machines are very easy to be blocked by sand and gravel in the mortar, leading to "pipe bursting". The pressure of the grouting machine is not easy to control, and there is no air release measure during the grouting process, which can easily cause the mortar injected into the hole to be insufficient, thus affecting the construction quality of mortar anchors. Summary of the Invention
[0004] The purpose of this invention is to overcome the defects and problems of poor grouting effect of existing mortar anchor bolts, and to provide a mortar anchor bolt grouting device with better grouting effect.
[0005] To achieve the above objectives, the technical solution of this utility model is: a mortar anchor grouting device, comprising a grout delivery pipe, an exhaust pipe, a conveying pipe, and a conveying assembly. The exhaust pipe is axially connected to the outer circumferential surface of the grout delivery pipe, and the conveying pipe is connected to the lower end of the grout delivery pipe. A conveying assembly for pushing mortar is installed inside the conveying pipe. The conveying assembly includes a conveying plate and a conveying rod. The conveying plate is slidably connected to the inner side wall of the conveying pipe, and the conveying rod is vertically arranged and connected to the lower side of the conveying plate.
[0006] The lower end of the conveying rod passes through the conveying pipe and is horizontally connected to a conveying handle.
[0007] A rubber sheet is connected to the side of the conveying plate away from the conveying rod, and the rubber sheet is slidably connected to the inner wall of the conveying pipe.
[0008] The delivery pipe is detachably connected to the slurry delivery pipe.
[0009] The lower end of the slurry delivery pipe is connected to a first interface, and the upper end of the delivery pipe is connected to a second interface that matches the first interface. The second interface is inserted into the inner wall of the first interface.
[0010] The first interface is horn-shaped, and the second interface is frustoconical.
[0011] The outer circumferential surface of the grout delivery pipe near its lower end is provided with a radial groove, and a check plate for sealing the grout delivery pipe is slidably connected in the groove.
[0012] The anti-reverse plate includes a baffle and a push rod. The push rod is radially connected to the outer circumferential surface of the baffle. The baffle is circular, and its outer diameter is the same as the inner diameter of the slurry delivery pipe.
[0013] The upper end face of the exhaust pipe is higher than the upper end face of the slurry delivery pipe.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. In this utility model, a mortar anchor bolt grouting device is provided. By setting an exhaust pipe, air in the mortar can be expelled during grouting of the tunnel mortar anchor bolt holes, thereby improving the fullness of the mortar. Mortar can be pre-filled in the delivery pipe, and then manually pressed into the mortar, further improving the fullness of the mortar entering the anchor bolt hole. By manually pushing the delivery rod, if blockage occurs, the pushing resistance will greatly increase. When the resistance increases, the delivery can be manually stopped, thus preventing pipe bursting. Therefore, this utility model has high grouting fullness, good grouting effect, and high reliability.
[0016] 2. In this utility model, a mortar anchor grouting device uses a conveying assembly with a connecting structure of a conveying plate and a conveying rod. Pushing the conveying rod allows the conveying plate to move back and forth within the conveying pipe. A conveying handle provides multiple points of contact for easy pushing of the conveying rod. During grouting, pushing the conveying handle moves the conveying rod upwards, forcing the mortar into the grouting pipe. After grouting, pushing the conveying handle in the opposite direction presses mortar into the upper end of the conveying pipe, allowing for the next grouting cycle. This results in a high reuse rate. The inclusion of a rubber sheet improves the wear resistance of the conveying assembly and enhances the sealing effect of the conveying plate, preventing leakage during grouting. Therefore, this utility model offers high reliability, excellent sealing, and a long service life.
[0017] 3. In this utility model's mortar anchor grouting device, if sand and gravel clog the delivery pipe, the delivery pipe and grouting pipe can be directly separated. The sand and gravel can be cleaned or a new delivery pipe can be used to continue grouting. By setting a first interface and a second interface, the delivery pipe and grouting pipe can be tightly connected. The second interface adopts a frustum-shaped design, so when sand and gravel appear in the mortar, they will be stuck at the end of the second interface, thus preventing sand and gravel from entering the grouting pipe and affecting subsequent grouting. By setting a check plate, after grouting is completed, the check plate blocks the grouting pipe, thus preventing mortar from flowing out of the grouting pipe. Therefore, this utility model has high reliability and good grouting effect. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the structure of the conveying component of this utility model.
[0020] Figure 3 This is a structural schematic diagram of the delivery pipe and the second interface of this utility model.
[0021] Figure 4 This is a structural schematic diagram of the slurry delivery pipe and the first interface of this utility model.
[0022] Figure 5 This is a cross-sectional schematic diagram of the slurry delivery pipe and anti-reverse plate of this utility model.
[0023] In the diagram: 1. Slurry pipe, 11. Exhaust pipe, 2. Conveying pipe, 3. Conveying assembly, 4. Conveying plate, 41. Conveying rod, 42. Conveying handle, 43. Rubber sheet, 44. First interface, 5. Second interface, 6. Anti-reverse plate, 7. Baffle, 71. Push rod, 72. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] Example 1:
[0026] See Figure 1 A mortar anchor grouting device includes a grout delivery pipe 1, an exhaust pipe 2, a conveying pipe 3, and a conveying assembly 4. The exhaust pipe 2 is axially connected to the outer circumferential surface of the grout delivery pipe 1. The conveying pipe 3 is connected to the lower end of the grout delivery pipe 1. The conveying assembly 4 for pushing mortar is installed inside the conveying pipe 3. The conveying assembly 4 includes a conveying plate 41 and a conveying rod 42. The conveying plate 41 is slidably connected to the inner wall of the conveying pipe 3. The conveying rod 42 is vertically arranged and connected to the lower side of the conveying plate 41. The lower end of the conveying rod 42 passes through the conveying pipe 3 and is horizontally connected to a conveying handle 43. A rubber sheet 44 is connected to the side of the conveying plate 41 away from the conveying rod 42. The rubber sheet 44 is slidably connected to the inner wall of the conveying pipe 3.
[0027] In this embodiment, the grout delivery pipe 1 uses a common steel pipe with an outer diameter of 34mm and a wall thickness of 2mm as the main material, the conveying pipe 3 uses a common steel pipe with an outer diameter of 100mm and a wall thickness of 2mm as the main material, the exhaust pipe 2 uses PVC material and is tied to the grout delivery pipe 1, and its length is determined according to the drilling depth. In this embodiment, the exhaust pipe 2 is 200mm from the bottom of the hole; the conveying plate 41 uses a steel plate with a thickness of 5mm as the main material, and the conveying plate 41 is welded to the conveying rod 42; the rubber sheet 44 uses ordinary natural rubber as the main material and is riveted to the conveying plate 41; the conveying rod 42 and the conveying handle 43 use a common steel pipe with an outer diameter of 20mm and a wall thickness of 2mm as the main material, and the two are welded together for subsequent grouting work.
[0028] During grouting, mortar is first poured into the delivery pipe 3. The delivery pipe 3 is then manually connected to the grouting pipe 1. The delivery handle 43 is used to apply force to press the delivery plate 41 to the bottom, thereby pressing the mortar into the anchor bolt hole. Then, the delivery pipe 3 is removed, and the delivery plate 41 is pulled to the bottom of the delivery pipe 3 using the delivery handle 43. Mortar is then injected into the delivery pipe 3. This process is repeated until mortar overflows from the gap between the grouting pipe 1 and the anchor bolt hole wall. The grouting pipe 1 and the vent pipe 2 are then pulled out, and the anchor bolt is inserted. Finally, a wooden wedge is used to squeeze between the anchor bolt and the anchor bolt hole wall to complete the anchor bolt grouting work.
[0029] Example 2:
[0030] The basic content is the same as in Example 1, except that:
[0031] See Figure 3 and Figure 4 The conveying pipe 3 is detachably connected to the slurry delivery pipe 1. The lower end of the slurry delivery pipe 1 is connected to a first interface 5, and the upper end of the conveying pipe 3 is connected to a second interface 6 that matches the first interface 5. The second interface 6 is inserted into the inner wall of the first interface 5. The first interface 5 is trumpet-shaped, and the second interface 6 is frustoconical.
[0032] In this embodiment, the first interface 5 is welded to the grout delivery pipe 1, and the second interface 6 is welded to the delivery pipe 3. The size of the first interface 5 is slightly larger than the size of the second interface 6. The diameter of the upper end face of the second interface 6 is consistent with that of the grout delivery pipe 1. When the delivery pipe 3 and the grout delivery pipe 1 are connected, the second interface 6 is inserted into the first interface 5 until the lower end face of the first interface 5 is flush with the lower end face of the second interface 6. At this time, the connection is completed, and subsequent grouting work can be carried out.
[0033] Example 3:
[0034] The basic content is the same as in Example 1, except that:
[0035] See Figure 4 and Figure 5 The outer peripheral surface of the slurry delivery pipe 1 near its lower end is provided with a radial groove 11. A check plate 7 for sealing the slurry delivery pipe 1 is slidably connected in the groove 11. The check plate 7 includes a baffle 71 and a push rod 72. The push rod 72 is radially connected to the outer peripheral surface of the baffle 71. The baffle 71 is circular, and the outer diameter of the baffle 71 is the same as the inner diameter of the slurry delivery pipe 1.
[0036] In this embodiment, the anti-reverse plate 7 is 100mm away from the anchor bolt hole opening. The baffle 71 and push rod 72 are made of steel plates with a thickness of 5mm. When the mortar overflows from the gap between the grouting pipe 1 and the anchor bolt hole wall, the baffle 71 is inserted into the slot of the grouting pipe 1. After standing still for a few minutes, the grouting pipe 1 and the exhaust pipe 2 are quickly pulled out.
Claims
1. A mortar anchor grouting device, characterized in that: The mortar delivery pipe (1), the exhaust pipe (2), the conveying pipe (3), and the conveying assembly (4) are included. The exhaust pipe (2) is axially connected to the outer circumferential surface of the mortar delivery pipe (1). The conveying pipe (3) is connected to the lower end of the mortar delivery pipe (1). The conveying assembly (4) for pushing mortar is installed inside the conveying pipe (3). The conveying assembly (4) includes a conveying plate (41) and a conveying rod (42). The conveying plate (41) is slidably connected to the inner side wall of the conveying pipe (3). The conveying rod (42) is vertically arranged and connected to the lower side of the conveying plate (41). The conveying pipe (3) is detachably connected to the slurry delivery pipe (1). The lower end of the slurry delivery pipe (1) is connected to a first interface (5). The upper end of the conveying pipe (3) is connected to a second interface (6) that matches the first interface (5). The second interface (6) is inserted into the inner wall of the first interface (5). The first interface (5) is trumpet-shaped, and the second interface (6) is frustoconical. The outer peripheral surface of the slurry delivery pipe (1) near the lower end is provided with a groove (11) in the radial direction. A check plate (7) for sealing the slurry delivery pipe (1) is slidably connected in the groove (11). The check plate (7) includes a baffle (71) and a push rod (72). The push rod (72) is connected in the radial direction to the outer peripheral surface of the baffle (71). The baffle (71) is circular, and the outer diameter of the baffle (71) is the same as the inner diameter of the slurry delivery pipe (1).
2. The grouting device for mortar anchor bolts according to claim 1, characterized in that: The lower end of the conveying rod (42) passes through the conveying pipe (3) and is horizontally connected to the conveying handle (43).
3. The grouting device for mortar anchor bolts according to claim 1, characterized in that: A rubber sheet (44) is connected to the side of the conveying plate (41) away from the conveying rod (42), and the rubber sheet (44) is slidably connected to the inner wall of the conveying pipe (3).
4. The grouting device for mortar anchor bolts according to claim 1, characterized in that: The upper end face of the exhaust pipe (2) is higher than the upper end face of the slurry delivery pipe (1).