A mast assembly for a dual-wheel milling and auger machine
By adding a column support and adjustment hole to the mast assembly of the twin-wheel milling drilling rig, combined with connecting assembly components and limit protection, the structural instability of the mast assembly and the wear of the wire rope under complex working conditions were solved, achieving efficient and safe operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU JINGAN HEAVY IND MFG CO LTD
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-31
AI Technical Summary
The existing mast assembly for twin-wheel milling and stirring drills has insufficient connection strength under complex construction conditions, and the wire rope guide wheel cannot be adjusted, resulting in structural instability and affecting operational accuracy and safety.
Multiple support columns are installed between the connecting section and the bottom section to increase the support strength. Adjustment holes are set at the wire rope guide wheel to adapt to changes in wire rope tension. Precise docking and length adjustment are achieved through connecting assembly components. At the same time, a connecting shaft and a round cover are set inside the bottom section for limit protection.
It improves the structural and transmission stability of the mast assembly, extends the service life of the wire rope, enhances assembly adaptability and overall reliability, and reduces assembly costs and safety hazards.
Smart Images

Figure CN224579315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of twin-wheel milling and drilling machine equipment manufacturing, specifically a mast assembly for a twin-wheel milling and drilling machine. Background Technology
[0002] In the field of twin-wheel milling and stirring drilling equipment manufacturing, the mast assembly, as the core support and transmission connection component of the drilling rig, directly affects the overall construction efficiency and safety of the drilling rig due to its structural stability, assembly adaptability and operational reliability.
[0003] However, existing mast assemblies for twin-wheel milling and stirring drilling rigs have many shortcomings in practical applications and are difficult to meet the needs of complex construction conditions. The connection structure between the connecting section and the bottom section of the traditional mast assembly is not strong enough and lacks effective reinforcing support components. When the drilling rig is subjected to large operating loads (such as milling and stirring cutting resistance and the force transmitted by the machine body's own weight), deformation and swaying are prone to occur at the connection points, resulting in a decrease in the overall stability of the mast. This not only affects the accuracy of milling and stirring operations but may also cause safety hazards. In addition, in the existing structure, the wire rope guide wheel is mostly fixedly installed and cannot be flexibly adjusted according to the tension changes and trajectory deviations of the wire rope during operation. This can easily lead to problems such as wire rope slack, deviation, and even accelerated wear, shortening the service life of the wire rope. At the same time, the uneven force on the wire rope further reduces the transmission stability of the mast assembly. Therefore, a new mast assembly for twin-wheel milling and stirring drilling rigs is proposed. Summary of the Invention
[0004] The purpose of this utility model is to provide a mast assembly for a twin-wheel milling and stirring drill to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a mast assembly for a twin-wheel milling and stirring drill, comprising a connecting support section and a bottom section, wherein multiple columns are installed on the side of the connecting support section adjacent to the bottom section, a pulley frame assembly is installed on the side of the connecting support section away from the columns, a wire rope guide wheel is installed on one side of the columns, and a connecting assembly component is installed on the pulley frame assembly and on one side of the columns.
[0006] As a further preferred embodiment of this technical solution: two connecting plates are symmetrically installed on one side of one of the column frames, and the wire rope guide wheel is installed on the two connecting plates; The connecting plate has two symmetrical adjustment holes, which are used to adjust the pulley frame assembly and keep the wire rope taut.
[0007] As a further preferred embodiment of this technical solution: the connecting assembly includes a fixing plate and a connecting plate. The fixing plate is fixedly connected to the pulley frame assembly and supports the mounting plate, while the connecting plate is used to install and fix the mounting plate to the fixing plate.
[0008] As a further preferred embodiment of this technical solution: four mounting plates are symmetrically mounted on the connecting plate, and two of the mounting plates are provided with adjustment holes II. The length of the connecting plate is adjusted by the adjustment holes II, thereby adapting to the installation of sensors of different specifications.
[0009] As a further preferred embodiment of this technical solution: a shaft is installed on the bottom section, a connecting shaft is installed inside the bottom section, and a round cover is installed on one side of the connecting shaft. The shaft is used for structural connection and support, motion guidance and limitation, and force transmission. The connecting shaft is used to realize the connection and power / motion transmission between the bottom section and other related components. At the same time, the round cover is used to protect and limit the connecting shaft and related internal structures of the bottom section.
[0010] As a further preferred embodiment of this technical solution: two plates are symmetrically fixedly connected to one side of the connecting joint, and a second shaft is installed on the adjacent side of the two plates. The two plates support the second shaft, which serves as a support structure for connecting or rotating components.
[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model increases the support strength of the connection between the connecting section and the bottom section by installing multiple columns on the adjacent sides. This effectively disperses the loads such as milling and churning cutting resistance and the load transmitted by the machine body weight during drilling operations, and avoids deformation or shaking at the connection due to concentrated force. It greatly improves the overall deformation resistance of the mast assembly, provides a stable structural foundation for the efficient and safe operation of the twin-wheel milling and churning drilling rig, and solves the problem of insufficient connection strength of traditional mast assemblies. In this utility model, two connecting plates with adjustment holes are symmetrically arranged on the side of a column frame. The wire rope guide wheel is installed between the connecting plates. On the one hand, the guide wheel provides precise guidance for the wire rope, ensuring its stable running trajectory. On the other hand, the installation position of the guide wheel can be finely adjusted with the adjustment hole. According to the changes in wire rope tension and trajectory deviation during operation, the wire rope is always kept in a taut state, avoiding the problem of accelerated wear caused by slackness and deviation, extending the service life of the wire rope, and ensuring the transmission stability of the mast assembly. This also makes up for the defect that traditional fixed guide wheels cannot be adjusted. The present invention comprises a connecting assembly assembly consisting of a fixed plate, a connecting plate, and a mounting plate with an adjustment hole II. The fixed plate securely connects to the pulley frame assembly, the connecting plate connects to the fixed plate via the mounting plate, and the adjustment hole II allows for adjustment of the length of the connecting plate. The above assembly facilitates precise connection between the mast assembly and other components of the drilling rig (such as sensors of different specifications and transmission mechanisms), and can adapt to different installation requirements without additional processing or modification, thereby reducing assembly costs, shortening assembly time, and solving the problem of poor adaptability of traditional connecting structures. This utility model features a connecting shaft installed inside the base section and equipped with a round cover. The round cover serves two purposes: firstly, it prevents impurities such as dust, mud, and construction wastewater from entering the base section, thus avoiding wear and corrosion of the connecting shaft and ensuring its transmission accuracy; secondly, it provides axial restraint for the connecting shaft, preventing it from shifting due to vibration or stress, ensuring that the connecting shaft is always in the preset working position and maintaining the structural stability of the base section. At the same time, the shaft body one on the base section and the shaft body two supported by the side plate of the connecting support section provide stable fulcrums for the connection between the base section, the connecting support section, and external components, avoiding the loosening problem of traditional mast connections and further improving the overall reliability and service life of the equipment. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the mast assembly for a twin-wheel milling and stirring drill according to the present invention; Figure 2 This is a side view of the mast assembly for a twin-wheel milling and stirring drill according to the present invention. Figure 3 This utility model relates to a mast assembly for a twin-wheel milling and stirring drill. Figure 1 Enlarged structural diagram of section A in the middle; Figure 4 This utility model relates to a mast assembly for a twin-wheel milling and stirring drill. Figure 1 Enlarged structural diagram of section B in the middle; Figure 5 This utility model relates to a mast assembly for a twin-wheel milling and stirring drill. Figure 2 Schematic diagram of the cross-sectional structure of AA; Figure 6 This utility model relates to a mast assembly for a twin-wheel milling and stirring drill. Figure 1 A schematic diagram of the cross-sectional structure of BB.
[0013] In the diagram: 1. Connecting support section; 2. Bottom section; 3. Column frame; 4. Pulley frame assembly; 5. Wire rope guide wheel; 6. Adjustment hole one; 7. Connecting assembly component; 71. Fixing plate; 72. Connecting plate; 73. Mounting plate; 74. Adjustment hole two; 8. Shaft one; 9. Connecting shaft; 10. Round cover; 11. Plate; 12. Shaft two. Detailed Implementation
[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example
[0015] Please see Figures 1-6This utility model provides a technical solution: a mast assembly for a twin-wheel milling and drilling machine, including a connecting support section 1 and a bottom section 2. Multiple columns 3 are installed on the side of the connecting support section 1 adjacent to the bottom section 2. A pulley frame assembly 4 is installed on the side of the connecting support section 1 away from the column 3. A wire rope guide wheel 5 is installed on one side of a column 3. A connecting assembly component 7 is installed on the pulley frame assembly 4 and located on one side of the column 3.
[0016] In this embodiment, specifically: two connecting plates are symmetrically installed on one side of a column frame 3, and the wire rope guide wheel 5 is installed on the two connecting plates; The connecting plate has two symmetrical adjustment holes 6, which are used to adjust the pulley frame assembly 4 and keep the wire rope taut.
[0017] In this embodiment, specifically: the connecting assembly 7 includes a fixing plate 71 and a connecting plate 72. The fixing plate 71 is welded to the pulley frame assembly 4. The fixing plate 71 is used to support the mounting plate 73, and the connecting plate 72 is used to install and fix the mounting plate 73 and the fixing plate 71.
[0018] In this embodiment, specifically: four mounting plates 73 are symmetrically mounted on the connecting plate 72, and two mounting plates 73 are provided with adjustment holes 74. The length of the connecting plate 72 can be adjusted through the adjustment holes 74 to accommodate the installation of sensors of different specifications.
[0019] In this embodiment, specifically: a shaft 8 is installed on the bottom section 2, a connecting shaft 9 is installed inside the bottom section 2, and a round cover 10 is installed on one side of the connecting shaft 9. The shaft 8 is used for structural connection and support, motion guidance and limitation, and force transmission.
[0020] In this embodiment, specifically: the connecting shaft 9 is used to connect the bottom section 2 internally or to other related components and transmit power / motion. As a key connecting component of the mast assembly, it can enhance the overall structure of the bottom section 2, ensure that the force in the bottom section 2 can be stably transmitted during the operation of the mast, avoid structural loosening or displacement due to weak connection, and ensure the overall structural stability and operational reliability of the mast assembly.
[0021] In this embodiment, specifically: the circular cover 10 is used to protect and limit the internal structure of the connecting shaft 9 and the base section 2. On the one hand, it prevents external dust, mud, construction wastewater and other impurities from entering the interior of the base section 2 and the contact part of the connecting shaft 9, preventing impurities from causing wear and corrosion of the connecting shaft 9, extending the service life of the connecting shaft 9, and avoiding impurities from affecting the transmission accuracy of the connecting shaft 9. On the other hand, the circular cover 10 can axially limit the installation position of the connecting shaft 9 in the base section 2, preventing the connecting shaft 9 from axially moving due to vibration, force and other factors during operation, ensuring that the connecting shaft 9 is always in the preset working position, and ensuring the stability of the mast assembly structure.
[0022] In this embodiment, specifically: two plates 11 are symmetrically welded on one side of the connecting section 1, and a shaft 12 is installed on the adjacent side of the two plates 11. The two plates 11 are used to support the shaft 12, and the shaft 12 is used as a support structure for connecting or rotating components, providing an installation base and rotation fulcrum for the connection of the mast assembly with other related components (e.g., the transmission mechanism and adjustment mechanism of the drilling rig).
[0023] Working principle: The main body of the assembly consists of a connecting section 1 and a bottom section 2. Multiple columns 3 are installed on the adjacent sides of the two. The columns 3 can enhance the connection strength between the connecting section 1 and the bottom section 2, improve the overall structural resistance to deformation, provide a stable support foundation for the mast assembly, and adapt to the stress requirements of the twin-wheel milling and stirring drilling machine. Two connecting plates are symmetrically installed on one side of one of the columns 3. The wire rope guide wheel 5 is installed between the connecting plates to guide the wire rope during drilling operations and ensure the stability of the wire rope's running trajectory. At the same time, two adjustment holes 6 are symmetrically opened on the connecting plates, so as to finely adjust the installation position of the wire rope guide wheel 5 according to the actual operation requirements and optimize the stress state of the wire rope. The pulley frame assembly 4 is installed on the connecting support section 1. The side of the assembly is provided with the connecting assembly component 7. The connecting assembly component 7 facilitates precise docking with other parts of the drilling rig, and the docking position can be finely adjusted by adjusting the second hole 74, thereby improving the assembly flexibility and adaptability. Shaft 1 8 is installed on bottom section 2, which can serve as a rotating or fixed connection point between bottom section 2 and external structure. Inside it is a connecting shaft 9. A round cover 10 is provided on one side of connecting shaft 9. The round cover 10 can limit and protect connecting shaft 9, preventing connecting shaft 9 from loosening or being affected by impurities. Two plates 11 are symmetrically fixed on one side of connecting support section 1. Shaft 2 12 is installed between plates 11. Shaft 2 12 can serve as a connection fulcrum between connecting support section 1 and other components, further expanding the connection function of mast assembly and meeting the multi-condition operation requirements of drilling rig.
[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A mast assembly for a dual-wheel, rotary-milling, auger drill, comprising a tieback section (1) and a base section (2), characterised in that: Multiple columns (3) are installed on the side adjacent to the bottom section (2) of the connecting support section (1). A pulley frame assembly (4) is installed on the side of the connecting support section (1) away from the column frame (3). A wire rope guide wheel (5) is installed on one side of the column frame (3). A connecting assembly assembly (7) is installed on the pulley frame assembly (4) and on the side of the column frame (3).
2. A mast assembly for a dual-wheel, auger drill rig as defined in claim 1, wherein: Two connecting plates are symmetrically installed on one side of one of the column frames (3), and the wire rope guide wheel (5) is installed on the two connecting plates; The connecting plate has two symmetrical adjustment holes (6).
3. A mast assembly for a dual-wheel, auger drill rig as defined in claim 1, wherein: The connecting assembly (7) includes a fixing plate (71) and a connecting plate (72), wherein the fixing plate (71) is fixedly connected to the pulley frame assembly (4).
4. A mast assembly for a dual-wheel, auger drill rig as defined in claim 3, wherein: Four mounting plates (73) are symmetrically installed on the connecting plate (72), and each of the two mounting plates (73) is provided with an adjustment hole (74).
5. A mast assembly for a dual-wheel, auger drill rig as defined in claim 1, wherein: A shaft (8) is installed on the bottom section (2), a connecting shaft (9) is installed inside the bottom section (2), and a round cover (10) is installed on one side of the connecting shaft (9).
6. The mast assembly for a twin-wheel milling and stirring drill according to claim 1, characterized in that: Two plates (11) are symmetrically fixedly connected to one side of the connecting section (1), and a shaft (12) is installed on the adjacent side of the two plates (11).