A drilling rig powerhead

Abstract

The utility model relates to the technical field of drilling machine, disclose a kind of drilling machine power head, including the horizontal box body of fixed connection on the chassis of drilling machine, along vertical and rotatably connected in the drive sleeve of box body and the transmission connection of deceleration motor with drive sleeve in proper order, the drill rod of drilling machine passes through drive sleeve along vertical, the deceleration motor is two set in proper order, the drive sleeve is at least two set in proper order, two deceleration motor is respectively with transmission connection to the two drive sleeve of outside, transmission connection in proper order between drive sleeve, the drive sleeve of adjacent turns opposite direction.This utility model drives three drive sleeves to rotate by two deceleration motor, and then drives three drill rods to work simultaneously, so that three holes can be drilled at one time, improve work efficiency, shorten construction cycle.

Description

Technical Field

[0001] This utility model relates to the field of drilling rig technology, and in particular to a drilling rig power head. Background Technology

[0002] Drilling rigs are common engineering equipment used for geological exploration or drilling holes underground to install precast concrete piles. Typically, the power head of a drilling rig is driven by a motor and a reducer, which rotates a drill rod. Therefore, such rigs can only drill one hole at a time, resulting in low efficiency and requiring a significant amount of time when drilling large quantities of holes is needed.

[0003] Patent CN214118059U discloses an improved grinding disc drilling machine, which includes a grinding disc body and a base. The base is located at the bottom of the grinding disc body and is rotatably connected to it. Multiple fixing piles are fixedly connected to the base at intervals. A limiting component is detachably connected to the top of each fixing pile. The limiting component includes a first limiting plate, a second limiting plate, and a fastening bolt. The first and second limiting plates are hinged together, forming a closed ring. The fastening bolt is located at the opening / closing point of the first and second limiting plates, passing through and engaging with them. Because the grinding disc body can only drive one drill rod to rotate, its working efficiency is low. Furthermore, its power unit is far from the grinding disc, and the grinding disc and power unit are connected via a drive shaft and coupling, resulting in a large space occupation and low transmission efficiency due to the long intermediate transmission links. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a drilling rig power head, which solves the problem that the current drilling rig power head can only drive one drill rod to rotate, and can only drill one hole at a time, resulting in low working efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A drilling rig power head includes a horizontal housing fixedly connected to the chassis of the drilling rig, a drive sleeve rotatably connected to the housing in a vertical direction, and a reduction motor sequentially connected to the drive sleeve. The drill rod of the drilling rig passes through the drive sleeve in a vertical direction. There are two reduction motors arranged in sequence, and at least two drive sleeves arranged in sequence. The two reduction motors are respectively connected to the two outermost drive sleeves. The drive sleeves are sequentially connected to each other, and adjacent drive sleeves rotate in opposite directions.

[0007] Furthermore, the geared motor is fixedly connected to the housing, and each geared motor has a drive gear connected to its output shaft. The drive gears are rotatably connected to the housing. Each drive sleeve has a drive gear fixedly connected to it. The drive gears on adjacent drive sleeves mesh with each other, and the two drive gears are respectively connected to the drive gear on the outermost drive sleeve.

[0008] Furthermore, the axes of the two driving gears are parallel to each other, and the axes of each driving gear are parallel to each other and located on the same vertical plane. The planes containing the two driving gears are parallel to the planes containing each driving gear.

[0009] Furthermore, idler gears are provided between the two driving gears and the two outermost drive gears. The idler gears are rotatably connected to the housing and mesh with the corresponding driving gears and drive gears, respectively.

[0010] Furthermore, both the upper and lower ends of the drive sleeve are fixedly connected to annular mounting seats. The cross-section of the drill rod is square. Each mounting seat has a roller on one side corresponding to the four sides of the drill rod. The axis of the roller is perpendicular to the axis of the drill rod. The rollers are rotatably connected to the mounting seats and abut against the corresponding sides of the drill rod.

[0011] Furthermore, each roller is rotatably connected with a support shaft, and the mounting base is fixedly connected with support seats at positions corresponding to the four corners of the drill rod. A pressure plate is fixedly connected to the support seat, and the end of the support shaft is clamped between the pressure plate and the support seat.

[0012] Furthermore, there is a gap between the drive sleeve and the top of the housing, and a water-blocking ring is fixedly fitted onto the drive sleeve, with the water-blocking ring blocking the gap.

[0013] Furthermore, a pressure cap is fixedly connected to the top of the housing and fitted over the drive sleeve. The center of the pressure cap is an annular protrusion that protrudes upward. The water-blocking ring is located above the pressure cap, and the edge of the water-blocking ring is a downward protruding ring. The water-blocking ring covers the protrusion.

[0014] The positive effects of this utility model are:

[0015] This invention uses two geared motors to drive three drive sleeves to rotate, thereby driving three drill rods to work simultaneously. This allows for drilling three holes at once, improving work efficiency and shortening the construction cycle. Adjacent drill rods rotate in opposite directions, causing the torque generated by two drill rods to cancel each other out. Ultimately, only the torque generated by one drill rod acts on the housing, significantly reducing the torque on the power head and making the drilling rig more stable and less prone to swaying during drilling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 Top view;

[0018] Figure 3 It is a schematic diagram of the transmission of the drive gear, idler gear and driving gear;

[0019] Figure 4 yes Figure 2 A magnified view of the location of the mounting bracket;

[0020] Figure 5 yes Figure 1 A magnified view of a section of the central I area;

[0021] In the picture:

[0022] 1. Motor; 2. Pressure plate; 3. Housing; 4. Drive gear; 5. Idler gear; 6. Drive gear; 7. Drive sleeve; 8. Pressure cover; 9. Water baffle ring; 10. Mounting base; 11. Drill rod; 12. Roller; 13. Support shaft; 14. Support base. Detailed Implementation

[0023] Example 1

[0024] like Figures 1 to 3 As shown, a drilling rig power head includes a horizontal housing 3 fixedly connected to the chassis of the drilling rig, a drive sleeve 7 rotatably connected to the housing 3 in a vertical direction, and a reduction motor 1 sequentially connected to the drive sleeve 7. The drill rod 11 of the drilling rig passes through the drive sleeve 7 in a vertical direction.

[0025] The reduction motor 1 consists of two units arranged sequentially from front to back, and the drive sleeve 7 consists of three units arranged sequentially from front to back. The two reduction motors 1 are respectively connected to the two outermost drive sleeves 7. The drive sleeves 7 are sequentially connected to each other, and adjacent drive sleeves 7 rotate in opposite directions.

[0026] Both geared motors 1 are vertical planetary gear reducers, and both geared motors 1 are fixedly connected to the housing 3. Each geared motor 1 has a drive gear 4 connected to its output shaft via a coupling, and the drive gear 4 is rotatably connected to the housing 3. Each drive sleeve 7 has a drive gear 6 fixedly connected to it on the same axis. The drive gears 6 on adjacent drive sleeves 7 mesh with each other, and the two drive gears 4 are respectively connected to the drive gears 6 on the two outermost drive sleeves 7.

[0027] The axes of the two drive gears 4 are parallel to each other, and the axes of the drive gears 6 are parallel to each other and located in the same vertical plane. The plane containing the two drive gears 4 is parallel to the plane containing the drive gears 6. After the power head is installed on the chassis of the drilling rig, both of these planes are perpendicular to the length direction of the chassis.

[0028] An idler wheel 5 is provided between each of the two driving gears 4 and the two outermost drive gears 6. The idler wheel 5 is rotatably connected to the housing 3 and meshes with the corresponding driving gear 4 and drive gear 6 respectively.

[0029] The two geared motors 1 rotate in the same direction, driving their respective drive gears 4 to rotate. These drive gears, in turn, drive the two outermost drive gears 6 via their respective idler gears 5, which in turn drive the middle drive gear 6, thus rotating the three drive sleeves 7. When the three drill rods 11 pass through the three drive sleeves 7, each drive sleeve 7 drives the three drill rods 11 to rotate, allowing for the simultaneous drilling of three holes. This improves work efficiency and shortens the construction cycle. Using two geared motors 1 disperses the power of the power head, reducing the capacity and size of a single geared motor 1, and also reducing the stress and manufacturing cost on each drive gear 4, idler gear 5, and drive gear 6.

[0030] The two geared motors 1 are directly mounted on the housing 3, resulting in a more compact structure. Simultaneously, the elimination of intermediate transmission links (such as drive shafts) improves transmission efficiency. The two geared motors 1 can be driven by a frequency converter, allowing the rotation speed of the drill rod 11 to be adjusted according to actual on-site conditions, thus enhancing the adaptability of this invention.

[0031] When one geared motor 1 fails, another geared motor 1 can be used to drive one of the drill rods 11 to work, and the other two drive sleeves 7 do not penetrate the drill rod 11, thereby improving the reliability of the work of this utility model and ensuring the continuity of work.

[0032] Because the rotation of the middle drill rod 11 is opposite to that of the other two drill rods 11, the torques generated by the two drill rods 11 can cancel each other out. In the end, only the torque generated by one drill rod 11 will act on the housing 3, which can greatly reduce the torque on the power head, making the drilling machine work stably and less prone to swaying during drilling.

[0033] Of course, if an even number of drive sleeves 7 are used and equipped with corresponding drive gears 6, the torque generated by the drill rod 11 during operation will be almost completely canceled out, and the drilling rig will be more stable during operation.

[0034] The purpose of setting the idler wheel 5 is to extend the transmission distance between the drive gear 4 and the driving gear 6, and to prevent interference between the geared motor 1 and the drill rod 11 due to the excessively close distance between the drive gear 4 and the driving gear 6.

[0035] Example 2

[0036] Combination Figure 4 and Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that:

[0037] Both ends of the drive sleeve 7 are fixedly fitted with annular mounting seats 10. The drill rod 11 has a square cross-section. Each mounting seat 10 has a roller 12 on one side corresponding to the four sides of the drill rod 11. The axis of each roller 12 is perpendicular to the axis of the drill rod 11. Each roller 12 is rotatably connected to the mounting seat 10. Each roller 12 abuts against the corresponding side of the drill rod 11.

[0038] The roller 12 drives the drill rod 11. When the drive sleeve 7 rotates, it drives the roller 12 to rotate, which in turn drives the drill rod 11 to rotate, thus achieving drilling. The roller 12 also guides the drill rod 11. While rotating, the drill rod 11 moves downward under the guidance of the roller 12, so the drill rod 11 is not easy to shake during the drilling process, thus ensuring the drilling accuracy.

[0039] Each roller 12 is rotatably connected to a support shaft 13. Support seats 14 are fixedly connected to the mounting base 10 at positions corresponding to the four corners of the drill rod 11. L-shaped pressure plates 2 are fixedly connected to the support seats 14. Each support seat 14 has an arc-shaped recess for engaging with the end of the support shaft 13. The end of the support shaft 13 is clamped between the pressure plate 2 and the support seat 14. The mounting base 10 is located at the corner of the drill rod 11, and the pressure plate 2 is L-shaped. Therefore, only four pairs of pressure plates 2 and mounting bases 10 are needed to clamp the eight ends of the four support shafts 13, thereby reducing production costs, improving production efficiency, and facilitating subsequent maintenance.

[0040] Example 3

[0041] The difference between this embodiment and Embodiment 2 is that:

[0042] There is a gap between the top of the drive sleeve 7 and the housing 3. A water-blocking ring 9 is fixedly sleeved on the drive sleeve 7, and the water-blocking ring 9 is clamped between the upper mounting base 10 and the shoulder of the drive sleeve 7. The water-blocking ring 9 blocks the gap. A pressure cap 8 is fixedly connected to the top of the housing 3, which is sleeved on the drive sleeve 7, and is used to axially press the bearing between the housing 3 and the drive sleeve 7. The center of the pressure cap 8 is an upwardly protruding annular boss, and the water-blocking ring 9 is located above the pressure cap 8. The edge of the water-blocking ring 9 is a downwardly protruding ring, and the water-blocking ring 9 covers the boss.

[0043] When the drive sleeve 7 rotates, it drives the water baffle ring 9 to rotate, thereby throwing out the water and dirt that fall on the water baffle ring 9 through centrifugal force, preventing water and dirt from entering the interior of the housing 3 through the gap between the housing 3 and the drive sleeve 7, which would cause wear on the bearings, drive gear 6, idler gear 5 or drive gear 4.

[0044] The above-described embodiments are detailed and specific, illustrating preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, with the aim of enabling those skilled in the art to understand the content of the present utility model and implement it accordingly. However, they are not limited to the present utility model, and the patent scope of the present utility model cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present utility model, without departing from the structure of the present utility model, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present utility model.

Claims

1. A drilling rig power head, comprising a horizontal housing (3) fixedly connected to the chassis of the drilling rig, a drive sleeve (7) rotatably connected to the housing (3) in a vertical direction, and a reduction motor (1) sequentially connected to the drive sleeve (7), wherein the drill rod (11) of the drilling rig passes vertically through the drive sleeve (7), characterized in that, The geared motors (1) are two units arranged in sequence, and the drive sleeves (7) are at least two units arranged in sequence. The two geared motors (1) are respectively connected to the two outer drive sleeves (7). The drive sleeves (7) are connected to each other in sequence, and the adjacent drive sleeves (7) rotate in opposite directions.

2. The drilling rig power head according to claim 1, characterized in that, The geared motor (1) is fixedly connected to the housing (3). Each geared motor (1) has a drive gear (4) connected to its output shaft. The drive gears (4) are rotatably connected to the housing (3). Each drive sleeve (7) has a drive gear (6) fixedly connected to it. The drive gears (6) on adjacent drive sleeves (7) mesh with each other. The two drive gears (4) are respectively connected to the drive gears (6) on the outer drive sleeve (7).

3. A drilling rig power head according to claim 2, characterized in that, The axes of the two driving gears (4) are parallel to each other, and the axes of each driving gear (6) are parallel to each other and located on the same vertical plane. The planes where the two driving gears (4) are located are parallel to the planes where each driving gear (6) is located.

4. A drilling rig power head according to claim 3, characterized in that, Idler wheels (5) are provided between the two driving gears (4) and the two outer driving gears (6). The idler wheels (5) are rotatably connected to the housing (3). The idler wheels (5) mesh with the corresponding driving gears (4) and driving gears (6) respectively.

5. A drilling rig power head according to claim 1, characterized in that, The upper and lower ends of the drive sleeve (7) are fixedly connected to annular mounting seats (10). The cross-section of the drill rod (11) is square. The mounting seat (10) is provided with rollers (12) on one side corresponding to the four sides of the drill rod (11). The axis of the rollers (12) is perpendicular to the axis of the drill rod (11). The rollers (12) are rotatably connected to the mounting seat (10). The rollers (12) respectively abut against the corresponding side of the drill rod (11).

6. A drilling rig power head according to claim 5, characterized in that, Each roller (12) is rotatably connected to a support shaft (13). The mounting base (10) is fixedly connected to a support seat (14) at the four corners corresponding to the drill rod (11). The support seat (14) is fixedly connected to a pressure plate (2). The end of the support shaft (13) is clamped between the pressure plate (2) and the support seat (14).

7. A drilling rig power head according to claim 1, characterized in that, There is a gap between the drive sleeve (7) and the top of the housing (3). A water-blocking ring (9) is fixedly sleeved on the drive sleeve (7), and the water-blocking ring (9) blocks the gap.

8. A drilling rig power head according to claim 7, characterized in that, The top of the housing (3) is fixedly connected to a pressure cap (8) that is sleeved outside the drive sleeve (7). The middle part of the pressure cap (8) is an annular boss that protrudes upward. The water-blocking ring (9) is located above the pressure cap (8). The edge of the water-blocking ring (9) is a downward protruding ring. The water-blocking ring (9) covers the boss.

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