Middle supporting mechanism of bolting and grouting trolley

Abstract

The utility model relates to the technical field of tunnel equipment, and discloses a bolting and grouting trolley middle supporting mechanism which comprises a connecting support, a propelling beam is fixedly connected to the side wall of the connecting support, a base is fixedly connected to the upper surface of the connecting support, a swing oil cylinder is rotationally connected to the interior of the base, and a lower check ring is arranged at the output end of the swing oil cylinder. A swing arm is rotatably connected to the upper surface of the base, a rack is slidably connected to the side wall of the swing arm, a gear is rotatably connected to the side wall of the swing arm, an upper check ring is fixedly connected to the interior of the swing arm, an upper lining is arranged in the upper check ring, and the side wall of the gear is fixedly connected to the side wall of the lower check ring. The lower check ring is hinged to the swing oil cylinder and the swing arm. According to the utility model, one oil cylinder is adopted for fixing the position of the middle supporting mechanism, limiting and opening the drill rod and swinging the whole mechanism, and compared with other complicated mechanical structures, the use of rubber pipes is reduced, so that the cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel equipment, in particular to an intermediate support mechanism of an anchor grouting trolley. Background Art

[0002] In the field of tunneling equipment, anchor-grouting trolleys are crucial construction equipment. Their intermediate support mechanisms play a vital role in the smooth operation of rock drilling, bolt installation, and grouting operations. With the continuous expansion of tunnel construction and increasing construction requirements, the performance requirements for the intermediate support mechanisms of anchor-grouting trolleys are becoming increasingly stringent. While ensuring stable and reliable operation, they must also balance cost, maintenance ease, and construction efficiency to meet the diverse needs of complex tunnel construction environments.

[0003] The intermediate support mechanism of the existing anchor grouting trolley is usually fixed. In terms of power transmission, it is generally equipped with multiple cylinders. One group of cylinders is responsible for the opening and closing of the retaining ring, and another group of cylinders is used to control the swing support of the swing arm. In order to achieve the coordinated work between different components, a large number of hoses are used to connect the various cylinders and other related hydraulic components to form a complex hydraulic circuit to transmit power. In terms of structural design, the retaining ring and the swing arm are often designed and manufactured independently, and the two are coordinated through complex connecting parts and transmission mechanisms to complete the corresponding actions. In the limit design, multiple limit devices of different positions and types will be set according to different action requirements and mechanical structure characteristics. These limit devices usually involve complex mechanical structures and electronic sensors, and multiple control systems are used to ensure the limit accuracy of each action.

[0004] The existing anchor grouting trolley's intermediate support mechanism can move forward and backward. This feature seriously affects the installation of the duct assembly of the drug roll conveying system, making the entire installation process complicated and prone to interference issues, increasing the difficulty of construction and the potential risk of failure. Furthermore, in terms of control, the limited opening and overall swing of the mechanism are controlled by two hydraulic cylinders, which leads to high costs. Therefore, a new intermediate support mechanism for the anchor grouting trolley is proposed to solve this problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an intermediate support mechanism for the anchor injection trolley, which aims to improve the problem in the existing technology that the intermediate support can move forward and backward, affecting the installation of the air duct assembly of the medicine roll conveying system, and the limit opening and the overall swing of the mechanism are controlled by two oil cylinders, which is costly.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An intermediate support mechanism for an anchor grouting trolley comprises a connecting bracket, a propulsion beam is fixedly connected to the side wall of the connecting bracket, a base is fixedly connected to the upper surface of the connecting bracket, a swing cylinder is rotatably connected to the inside of the base, a lower retaining ring is provided at the output end of the swing cylinder, a swing arm is rotatably connected to the upper surface of the base, a rack is slidably connected to the side wall of the swing arm, a gear is rotatably connected to the side wall of the swing arm, an upper retaining ring is fixedly connected to the inside of the swing arm, and an upper bushing is provided inside the upper retaining ring;

[0008] As a further description of the above technical solution:

[0009] The gear side wall is fixedly connected to the side wall of the lower retaining ring, and the lower retaining ring is hinged to the swing cylinder and the swing arm;

[0010] As a further description of the above technical solution:

[0011] The side wall of the swing arm is fixedly connected to a fixed sleeve, and the side wall of the rack is slidably connected to the inside of the fixed sleeve;

[0012] As a further description of the above technical solution:

[0013] The rack is meshed with the gear;

[0014] As a further description of the above technical solution:

[0015] The side wall of the rack is fixedly connected to the limit plate, and the side wall of the limit plate is slidably connected to the side wall of the swing arm;

[0016] As a further description of the above technical solution:

[0017] The upper surface of the base is fixedly connected to a limiting block, and a limiting groove is provided inside the limiting block;

[0018] As a further description of the above technical solution:

[0019] The side wall of the limiting plate is slidably connected to the inside of the limiting groove;

[0020] As a further description of the above technical solution:

[0021] A lower bushing is provided inside the lower retaining ring, and a drill rod is provided between the lower bushing and the upper bushing.

[0022] The utility model has the following beneficial effects:

[0023] In this utility model, a single oil cylinder is used to complete the opening and closing of the retaining ring and the swing support arm. While meeting functional requirements, it exhibits the characteristics of simple structure and light weight. Compared with other complex mechanical structures, the use of hoses is reduced, thereby effectively reducing costs. The upper retaining ring and the swing arm are welded as a whole, making the movement mechanism simple and requiring little processing. The two limit points of the swing arm inner swing limit and the rack upper limit are easy to process and ensure the stability and accuracy of the device operation. When the drill rod of a different size needs to be replaced or the drill rod is severely worn, it can be easily solved by replacing the bushing, which is simpler and less expensive to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a side view schematic diagram of the intermediate support mechanism of the anchor grouting trolley proposed in the present invention;

[0025] Figure 2 This is a schematic diagram of the structure driven by a swing cylinder of the middle support mechanism of the anchor grouting trolley proposed in the present invention;

[0026] Figure 3 This is a structural schematic diagram of the initial state of the swing arm of the middle support mechanism of the anchor grouting trolley proposed by the utility model.

[0027] Legend:

[0028] 1. Connecting bracket; 2. Propulsion beam; 3. Base; 4. Swing cylinder; 5. Swing arm; 6. Rack; 7. Gear; 8. Lower retaining ring; 9. Limit plate; 10. Upper bushing; 11. Lower bushing; 12. Limit block; 13. Limit groove; 14. Fixing sleeve; 15. Drill rod; 16. Upper retaining ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1-Figure 3The utility model provides an embodiment: an intermediate support mechanism of an anchor grouting trolley, including a connecting bracket 1, which plays a role of connection and support. The side wall of the connecting bracket 1 is fixedly connected with a propulsion beam 2, which can push the entire mechanism forward so that the operation can proceed smoothly. The upper surface of the connecting bracket 1 is fixedly connected to the base 3, and the base 3 is rotatably connected to the swing cylinder 4. The output end of the base 3 is provided with a lower retaining ring 8, which can drive the lower retaining ring 8 to move by its own extension and rotation. The upper surface of the base 3 is rotatably connected to the swing arm 5, and the swing arm 5 can flexibly rotate on the base 3 to provide active support for subsequent working actions. Its side wall is slidably connected to the rack 6, and the rack 6 slides on the side wall of the swing arm 5. The side wall of the swing arm 5 is rotatably connected to the gear 7, and the gear 7 can rotate around the connection point with the swing arm 5. The side wall of the gear 7 is fixedly connected to the side wall of the lower retaining ring 8, and when the lower retaining ring 8 moves, it can drive the gear 7 to move synchronously. The lower retaining ring 8 is hinged to the swing cylinder 4 and the swing arm 5, so that the lower retaining ring 8 can swing flexibly relative to the swing arm 5 under the drive of the swing cylinder 4. The side wall of the swing arm 5 is fixedly connected to the fixed sleeve 14, and the fixed sleeve 14 provides guidance and limit for the sliding of the rack 6. The side wall of the rack 6 is slidably connected to the inside of the fixed sleeve 14, ensuring the stability of the linear motion of the rack 6. The rack 6 meshes with the gear 7, and the rack 6 is driven to slide by the rotation of the gear 7. The side wall of the rack 6 is fixedly connected to the limit plate 9, and the side wall of the limit plate 9 is slidably connected to the side wall of the swing arm 5. The upper surface of the base 3 is fixedly connected to the limit block 12, and a limit groove 13 is provided inside the limit block 12. The side wall of the limit plate 9 is slidably connected to the inside of the limit groove 13. A lower bushing 11 is provided inside the lower retaining ring 8, and the lower bushing 11 can reduce the friction between the lower retaining ring 8 and the drill rod 15, protect the drill rod 15 and extend its service life. An upper bushing 10 is provided inside the upper retaining ring 16. Similarly, the upper bushing 10 can reduce the friction between the upper retaining ring 16 and the drill rod 15. A drill rod 15 is provided between the lower bushing 11 and the upper bushing 10. The drill rod 15 performs operations such as drilling under the support and drive of the intermediate support mechanism.

[0031] When the device is used for operation, in the initial state, the swing cylinder 4 is retracted to its shortest position, the lower retaining ring 8 is in the open state, and the mechanism is swung to the side so as not to interfere with the initial position and movement of other working parts. At this time, because the limit plate 9 is blocked by the base 3, this blocking relationship restricts the closing action of the lower retaining ring 8, and the lower retaining ring 8 cannot be closed. The extension of the swing cylinder 4 can only drive the swing arm 5 to swing inward. When the swing arm 5 reaches the limit point at the edge of the limit block 12, the limit point at the edge of the limit block 12 accurately limits the swing range of the swing arm 5, and it can no longer continue to swing inward. At this time, the lower end of the limit plate 9 is directly opposite to the upper limit groove 13 of the limit block 12. This direct relationship creates conditions for subsequent motion conversion. At this time, the swing cylinder 4 continues to extend. Because of the limit slot 13, the limit slot 13 provides guidance and limit for the movement of the limit plate 9, so the limit plate 9 can move downward. At this time, the lower retaining ring 8 can be closed. When the swing cylinder 4 is extended to its longest position, the lower retaining ring 8 and the upper retaining ring 16 form a full circle that can be used to limit the rotation of the drill rod 15. The upper retaining ring 16 and the lower retaining ring 8 work together to provide a stable limit for the rotation of the drill rod 15, ensuring that the drill rod 15 will not deviate during the rotation operation. At this time, the limit plate 9 is inserted into the limit slot 13 to the deepest and there is still a certain gap with the bottom. This gap design ensures the flexibility of movement and avoids excessive squeezing between components. When the rock drill moves to near the middle support mechanism, it needs to swing outward to allow the rock drill to move. The entire action process is the opposite of when it is closed. When the cam 4 is shortened, the lower retaining ring 8 is opened, and the opening of the lower retaining ring 8 makes room for the movement of the rock drill. At the same time, the rack 6 slides upward, and the sliding of the rack 6 realizes the transmission of power and the conversion of the motion form, and drives the limiting plate 9 to gradually pull out the limiting groove 13. When the rack 6 moves to the upper limit position inside the fixed sleeve 14, the upper limit position inside the fixed sleeve 14 controls the motion range of the rack 6, and the lower retaining ring 8 can not continue to open. At this time, because the limiting plate 9 has slid out of the limiting groove 13, the restriction on the swing arm 5 is released, and the swing cylinder 4 continues to shorten and can drive the swing arm 5 to swing outwards. When the swing cylinder 4 is shortened to the shortest, the swing arm 5 stops moving, and the space swung out can meet the movement of the rock drill, thereby creating the necessary conditions for the movement of the rock drill. After rock drilling is completed, the rock drill needs to be swung to the outside as a whole and the anchor mechanism needs to be moved to the original rock drill position. At this time, there is a large gap between the drill rod 15 and the intermediate support mechanism. This large gap ensures that the various components will not interfere with each other when moving, and will not affect the sideways movement of the rock drill.An upper bushing 10 and a lower bushing 11 are installed inside the upper retaining ring 16 and the lower retaining ring 8 respectively. The upper bushing 10 and the lower bushing 11 can reduce the friction between the drill rod 15 and the retaining ring and reduce wear. The bushing and the retaining ring are bolted together, and the bolt connection method is convenient for installation and disassembly. The bushing can be replaced according to the size or wear degree of the drill rod 15. This design makes after-sales maintenance simpler and lower in cost, thereby improving the maintainability and economy of the equipment. Through the above structure, a swing cylinder 4 can complete the two actions of opening and closing the retaining ring and swinging the supporting swing arm 5. This design makes the entire structure simple, the weight is also reduced, and the use of hoses is reduced, which reduces costs. At the same time, such a structure is easy to assemble and debug, which can improve production efficiency. Secondly, the upper retaining ring 16 and the swing arm 5 are welded into a whole, which reduces the processing amount. In terms of limit design, only two limit points, the inner swing limit of the swing arm 5 and the upper limit of the rack 6, need to be set. This method is easier to ensure processing, and the position of the intermediate support mechanism is fixed, which can provide stable support for the overall structure.

[0032] Working principle: When the equipment is used for work, in the initial state, the swing cylinder 4 is retracted to its shortest position, the lower retaining ring 8 is in the open position, and the mechanism is swung to the side. At this time, because the limit plate 9 is blocked by the base 3, the lower retaining ring 8 cannot be closed. The extension of the swing cylinder 4 can only drive the swing arm 5 to swing inward. When the swing arm 5 reaches the limit point on the edge of the limit block 12, it can no longer continue to swing inward. At this time, the lower end of the limit plate 9 is opposite to the upper limit groove 13 of the limit block 12. At this time, the swing cylinder 4 continues to extend. Because of the limit groove 13, the limit plate 9 can move downward. At this time, the lower retaining ring 8 can be closed. When the swing cylinder 4 is extended to its longest position, the lower retaining ring 8 and the upper retaining ring 16 form a full circle that can be used to limit the rotation of the drill rod 15. At this time, the limit plate 9 is inserted into the limit groove 13 to the deepest and there is still a certain gap with the bottom. When the rock drill moves close to the middle support mechanism. When the rack 6 moves to the upper limit position inside the fixed sleeve 14, the lower retaining ring 8 cannot continue to open. At this time, because the limit plate 9 has slipped out of the limit groove 13, the swing cylinder 4 continues to shorten and can drive the swing arm 5 to swing outward. When the swing cylinder 4 is shortened to the shortest, the swing arm 5 stops moving. The space swung out can meet the movement of the rock drill. After the rock drilling is completed, the rock drill needs to be swung to the outside as a whole and the anchor mechanism needs to be moved to the original rock drill position. At this time, there is a large gap between the drill rod 15 and the intermediate support mechanism, which will not affect the sideways movement of the rock drill.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intermediate support mechanism for an anchor grouting trolley, comprising a connecting bracket (1), characterized in that: The side wall of the connecting bracket (1) is fixedly connected to a propulsion beam (2), the upper surface of the connecting bracket (1) is fixedly connected to a base (3), the base (3) is internally rotatably connected to a swing cylinder (4), the output end of the swing cylinder (4) is provided with a lower retaining ring (8), the upper surface of the base (3) is rotatably connected to a swing arm (5), the side wall of the swing arm (5) is slidably connected to a rack (6), the side wall of the swing arm (5) is rotatably connected to a gear (7), the swing arm (5) is internally fixedly connected to an upper retaining ring (16), and an upper bushing (10) is provided inside the upper retaining ring (16).

2. The intermediate support mechanism of the anchor grouting trolley according to claim 1, characterized in that: The side wall of the gear (7) is fixedly connected to the side wall of the lower retaining ring (8), and the lower retaining ring (8) is hinged to the swing cylinder (4) and the swing arm (5).

3. The intermediate support mechanism of the anchor grouting trolley according to claim 1, characterized in that: The side wall of the swing arm (5) is fixedly connected to a fixed sleeve (14), and the side wall of the rack (6) is slidably connected inside the fixed sleeve (14).

4. The intermediate support mechanism of the anchor grouting trolley according to claim 3, characterized in that: The rack (6) is meshed with the gear (7).

5. The intermediate support mechanism of the anchor grouting trolley according to claim 4, characterized in that: The side wall of the rack (6) is fixedly connected to a limit plate (9), and the side wall of the limit plate (9) is slidably connected to the side wall of the swing arm (5).

6. The intermediate support mechanism of the anchor grouting trolley according to claim 5, characterized in that: The upper surface of the base (3) is fixedly connected to a limiting block (12), and a limiting groove (13) is provided inside the limiting block (12).

7. The intermediate support mechanism of the anchor grouting trolley according to claim 6, characterized in that: The side wall of the limiting plate (9) is slidably connected to the inside of the limiting groove (13).

8. The intermediate support mechanism of the anchor grouting trolley according to claim 1, characterized in that: A lower bushing (11) is provided inside the lower retaining ring (8), and a drill rod (15) is provided between the lower bushing (11) and the upper bushing (10).

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