Power head with double-helix driving structure

Abstract

The utility model relates to the technical field of capital construction, and provides a power head with a double-helix driving structure, which comprises a mounting plate, an upper shell and a lower shell, the upper shell is fixedly arranged on the upper surface of the mounting plate to form an upper chamber, and the lower shell is fixedly arranged on the lower surface of the mounting plate to form a lower chamber; a driving gear shaft and a driven gear shaft are arranged in the lower cavity, the upper end of the driving gear shaft is fixedly connected with an output shaft of the speed reducer, the lower end of the driving gear shaft is rotationally arranged on a bottom plate of the lower shell, the upper end of the driven gear shaft is rotationally arranged on the mounting plate, and the lower end of the driven gear shaft rotationally penetrates out of the bottom plate to be arranged on the bottom plate of the lower shell. A hollow channel is formed in the driven gear shaft, the upper end of the driven gear shaft is communicated with the hollow channel and provided with a liquid supply pipe, the liquid inlet end of the liquid supply pipe penetrates out of the upper shell, and a connecting flange is fixedly arranged at the lower end of the driven gear shaft. And a positioning structure for positioning and mounting the driving gear shaft and the two driven gear shafts to improve the assembly precision is arranged on a bottom plate of the lower shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of infrastructure, especially relates to a double helix drive structure power head. BACKGROUND

[0002] The pile machine carries out underground drilling to the drill rod through the power head output power. With the drilling depth of the drill bit deeper and deeper, the geology is also harder and harder, and the length of the drill rod is also longer and longer, the loss of the rotating power is more and more big, and the torque size of the power head output directly affects the spiral drilling efficiency of the drill rod. The current power head adopts a motor to drive the spiral drilling of the drill rod, and with the pursuit of drilling depth, the torque output of the current power head cannot meet the drilling operation demand.

[0003] In order to solve the above problems, the market appears the power head using two groups of motors to drive, and the two groups of motors drive the meshing transmission of the driving gear shaft and the driven gear shaft respectively. Because the internal space of the power head is limited, the component installation is not good operation, the installation error is big, and the position precision between the driving gear and the driven gear directly affects the meshing transmission efficiency of the driving gear shaft and the driven gear shaft.

[0004] In order to improve the installation position precision between the driving gear shaft and the driven gear shaft, the case is generated. CONTENT OF THE UTILITY MODEL

[0005] Therefore, in view of the above problems, the utility model provides a double helix drive structure power head.

[0006] To solve the above technical problems, the utility model adopts the following solutions: a double helix drive structure power head, including mounting plate, upper shell, lower shell, the upper shell is fixedly arranged on the upper surface of the mounting plate to form an upper chamber, the lower shell is fixedly arranged on the lower surface of the mounting plate to form a lower chamber, the upper chamber is provided with two groups of motors with forward and reverse rotation function and two groups of reducers at the rear end of the mounting plate, the shell of the motor is fixedly arranged on the input end of the reducer, the rotating shaft of the motor is fixedly connected with the input shaft of the reducer, the output end of the reducer is fixedly arranged on the mounting plate, and the mounting plate is provided with a through hole for the output shaft of the reducer to rotate through.

[0007] The upper chamber is provided with two groups of motors with forward and reverse rotation function and two groups of reducers at the rear end of the mounting plate, the shell of the motor is fixedly arranged on the input end of the reducer, the rotating shaft of the motor is fixedly connected with the input shaft of the reducer, the output end of the reducer is fixedly arranged on the mounting plate, and the mounting plate is provided with a through hole for the output shaft of the reducer to rotate through.

[0008] The lower chamber is internally provided with a driving gear shaft and a driven gear shaft, the upper end of the driving gear shaft is fixedly connected with the output shaft of the speed reducer, the lower end is rotatably arranged on the bottom plate of the lower shell, the upper end of the driven gear shaft is rotatably arranged on the mounting plate, and the lower end is rotatably arranged on the bottom plate of the lower shell; the driven gear on the driven gear shaft is in meshing transmission with the driving gears on the two driving gear shafts, and the pitch circle diameter of the driven gear is greater than that of the driving gear.

[0009] The driven gear shaft is internally provided with a hollow channel, the upper end of the driven gear shaft is provided with a liquid supply pipe in communication with the hollow channel, the liquid inlet end of the liquid supply pipe penetrates out of the upper shell, and the lower end of the driven gear shaft is fixedly provided with a connecting flange; the bottom plate of the lower shell is provided with a positioning structure for positioning and mounting the driving gear shaft and the two driven gear shafts to improve assembly accuracy.

[0010] Further improvement is that: the positioning structure comprises a driving mounting seat, a driven mounting seat, a plurality of first fixing pieces, a plurality of second fixing pieces and a cross positioning piece, the rear end of the cross positioning piece is fixedly arranged on the center line of the rear end face of the lower shell, the left and right ends are fixedly arranged on the outer walls of the two driving mounting seats perpendicularly, the front end is fixedly arranged on the outer wall of the driven mounting seat perpendicularly, the inner side of the first fixing piece is fixedly arranged on the outer wall of the driving mounting seat, and the outer side is fixedly arranged on the inner wall of the lower shell, the inner side of the second fixing piece is provided with a pressing groove, the upper groove wall of the pressing groove is matched with the upper surface of the driven mounting seat, the side groove wall of the pressing groove is matched with the outer surface of the driven mounting seat, the lower end of the second fixing piece is fixedly arranged on the bottom plate of the lower shell, the lower surfaces of the driving mounting seat and the driven mounting seat are fixedly arranged on the bottom plate of the lower shell, the first bearing is fixedly arranged in the driving mounting seat, the lower end of the driving gear shaft is fixedly arranged on the inner ring of the first bearing, the second bearing is fixedly arranged in the driven mounting seat, and the lower end of the driven gear shaft is fixedly arranged in the inner ring of the second bearing.

[0011] Further improvement is that: the rear end top surface of the cross positioning piece and the outer side top surface of the first fixing piece are matched with the lower surface of the mounting plate.

[0012] Further improvement is that: the upper shell is arranged on the side wall of the motor.

[0013] Further improvement is that: the upper shell is arranged on the side wall of the motor.

[0014] By adopting the foregoing technical scheme, the utility model has the advantages of:

[0015] Two groups of motors are adopted in the case, the two groups of driving gear shafts are synchronously meshed with driven gear shafts to strengthen the torque of the drill pipe, and the meshing transmission precision between the driving gear and the driven gear is improved through the positioning structure to improve the drilling efficiency of the drill pipe and the operation efficiency of the pile machine.

[0016] Further beneficial effects are that the driving mounting seat and the driven mounting seat are respectively welded and fixed on the bottom plate of the lower shell through the first fixing sheet and the second fixing sheet, the driving mounting seat, the driven mounting seat and the lower shell are accurately positioned through the cross positioning sheet, so that the installation error between the gear shafts is reduced, and the meshing transmission efficiency is improved.

[0017] Further beneficial effects are that the second fixing sheet is press-fitted on the driven mounting seat through the pressing groove, so that the installation strength of the driven mounting seat is increased.

[0018] Further beneficial effects are that the rear end top surface of the cross positioning sheet and the outer side top surface of the first fixing sheet are attached to the lower surface of the mounting plate, so that the overall strength of the lower chamber is increased, and the driving gear shaft and the driven gear shaft are prevented from being damaged due to the gravity of the power head and the drilling pressure.

[0019] The cross positioning sheet, the driving mounting seat and the driven mounting seat are welded and fixed outside the power head first, then the rear end of the cross positioning sheet is welded and fixed to the inner wall of the rear end surface of the lower shell, and then the first fixing sheet and the second fixing sheet are welded. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective structural schematic view of the power head of the double-spiral driving structure according to an embodiment of the present application.

[0021] Figure 2 is a front view structural schematic view of the power head of the double-spiral driving structure according to an embodiment of the present application.

[0022] Figure 3 is an internal perspective structural schematic view of the power head of the double-spiral driving structure according to an embodiment of the present application.

[0023] Figure 4 is an internal perspective structural schematic view of the power head of the double-spiral driving structure according to an embodiment of the present application.

[0024] Figure 5 is a perspective structural schematic view of the positioning structure in the power head of the double-spiral driving structure according to an embodiment of the present application.

[0025] Figure 6 is a perspective structural schematic view of the positioning structure in the power head of the double-spiral driving structure according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] The utility model further discloses the specific embodiments in combination with the drawings.

[0027] Reference Figures 1 to 6 The utility model discloses a double helix drive structure power head, including mounting panel 10, upper casing 11, lower casing 12, upper casing 11 fixed setting on the mounting panel 10 upper surface forms the upper chamber, lower casing 12 fixed setting on the mounting panel 10 lower surface forms the lower chamber, upper casing 11, lower casing 12 with mounting panel 10 first bolt fixed connection again weld. The upper chamber is located in the rear end of mounting panel 10 and is provided with two groups of motor 13 with positive and negative rotation function, two groups of speed reducer 14, the shell of motor 13 is fixedly arranged on the input end of speed reducer 14, the rotating shaft of motor 13 is fixedly connected with the input shaft of speed reducer 14, and the output end of speed reducer 14 is fixedly arranged on the mounting panel 10, and the mounting panel 10 is provided with a through hole for the output shaft of speed reducer 14 to rotate and pass through;

[0028] The lower chamber is provided with driving gear shaft 15, driven gear shaft 16, the upper end of driving gear shaft 15 is fixedly connected with the output shaft of speed reducer 14, the lower end is rotationally arranged on the bottom plate 17 of lower casing 12, the upper end of driven gear shaft 16 is rotationally arranged on the mounting panel 10, and the lower end rotationally penetrates the bottom plate 17 and is arranged on the bottom plate of lower casing 12, the driven gear on driven gear shaft 16 is engaged with the driving gear on the two driving gear shafts 15, and the pitch circle diameter of the driven gear is greater than the pitch circle diameter of the driving gear, so that the rotation speed output by motor 13 is further reduced and the torque is increased;

[0029] The driven gear shaft 16 is internally hollow (not shown in the figure), the upper end of driven gear shaft 16 is communicated with the hollow channel and is provided with a liquid supply pipe 9, the liquid inlet end of liquid supply pipe 9 penetrates the upper casing 11, the liquid supply pipe 9 and the upper end of driven gear shaft are fixedly connected by using the existing connecting structure, which does not belong to the improvement point of the case, so it is not described in detail here. The lower end of driven gear shaft 16 is fixedly provided with a connecting flange 18 for fixedly connecting with an external drill rod, and the bottom plate of lower casing 12 is provided with a positioning structure for positioning and installing driving gear shaft 15 and two driven gear shafts 16 to improve assembly accuracy.

[0030] The positioning structure comprises two driving mounting seats 19 for mounting the driving gear shaft 15, a driven mounting seat 20 for mounting the driven gear shaft 16, a plurality of first fixing plates 21 for fixing the driving mounting seats 19, a plurality of second fixing plates 22 for mounting the driven mounting seat 20, and a cross positioning plate 23 for positioning the fixed positions of the two driving mounting seats 19 and the driven mounting seat 20 to improve the mounting accuracy, wherein the rear end of the cross positioning plate 23 is fixedly welded on the center line of the rear end face of the lower shell 12, the left and right ends are fixedly welded on the outer walls of the two driving mounting seats 19 perpendicularly, and the front end is fixedly welded on the outer wall of the driven mounting seat 20 perpendicularly, the top surface of the rear end of the cross positioning plate 23 and the top surface of the outer side of the first fixing plate 21 are attached to the lower surface of the mounting plate 10, so as to increase the overall strength of the lower chamber and avoid damage to the driving gear shaft 15 and the driven gear shaft 16 caused by the gravity of the power head and the drilling pressure. The inner side of the first fixing plate 21 is fixedly welded on the outer wall of the driving mounting seat 19, and the outer side is fixedly welded on the inner wall of the lower shell 12, the inner side of the second fixing plate 22 is provided with a pressing groove 8, the upper groove wall of the pressing groove is attached to the upper surface of the driven mounting seat 20, the side groove wall of the pressing groove is attached to the side surface of the driven mounting seat 20, the lower end of the second fixing plate 22 is fixedly welded on the bottom plate of the lower shell 12, the lower surfaces of the driving mounting seat 19 and the driven mounting seat 20 are fixedly welded on the bottom plate of the lower shell 12, the first bearing (not shown in the figure) is fixedly arranged in the driving mounting seat 19, the lower end of the driving gear shaft 15 is fixedly arranged on the inner ring of the first bearing, and the second bearing 24 is fixedly arranged in the driven mounting seat 20, and the lower end of the driven gear shaft 16 is fixedly arranged in the inner ring of the second bearing 24.

[0031] The upper shell 11 is provided with a heat dissipation hole 25 on the side wall at the motor 13. The upper shell 11 is provided with a lifting lug 26 welded on the top surface for lifting on the external column.

[0032] The basic principle and main features of the utility model and its advantages are shown and described above, and those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A double helical drive structure powerhead characterized by: It includes installation plate, upper shell, lower shell, the upper shell is fixedly arranged on the upper surface of the installation plate to form the upper chamber, the lower shell is fixedly arranged on the lower surface of the installation plate to form the lower chamber; Two groups of motors and two groups of reducers are arranged at the rear end of the installation plate in the upper chamber, the shell of the motor is fixedly arranged on the input end of the reducer, the rotating shaft of the motor is fixedly connected with the input shaft of the reducer, and the output end of the reducer is fixedly arranged on the installation plate; The upper end of the driving gear shaft is fixedly connected with the output shaft of the reducer, and the lower end is rotatably arranged on the bottom plate of the lower shell, the upper end of the driven gear shaft is rotatably arranged on the installation plate, and the lower end is rotatably arranged on the bottom plate of the lower shell and penetrates the bottom plate, the driven gear on the driven gear shaft is in meshing transmission with the driving gear on the two driving gear shafts, and the pitch circle diameter of the driven gear is greater than that of the driving gear; The driving gear shaft is internally provided with a hollow channel, the upper end of the driving gear shaft is provided with a liquid supply pipe in communication with the hollow channel, the liquid inlet end of the liquid supply pipe penetrates the upper shell, and the lower end of the driving gear shaft is fixedly provided with a connecting flange; 2. A powerhead of the double helical drive structure according to claim 1, characterized in that: The bottom plate of the lower shell is provided with a positioning structure for positioning and installing the driving gear shaft and the two driven gear shafts to improve assembly accuracy.

3. A powerhead of the twin helical drive structure according to claim 2, characterized in that: The positioning structure comprises driving mounting seats, driven mounting seats, a plurality of first fixing pieces, a plurality of second fixing pieces and cross positioning pieces, the rear end of the cross positioning piece is fixedly arranged on the center line of the rear end face of the lower shell, the left and right ends are fixedly arranged on the outer walls of the two driving mounting seats, the front end is fixedly arranged on the outer wall of the driven mounting seat, the inner side of the first fixing piece is fixedly arranged on the outer wall of the driving mounting seat, and the outer side is fixedly arranged on the inner wall of the lower shell, the inner side of the second fixing piece is fixedly arranged on the outer wall of the driven mounting seat, the lower end of the second fixing piece is fixedly arranged on the bottom plate of the lower shell, the lower surfaces of the driving mounting seat and the driven mounting seat are fixedly arranged on the bottom plate of the lower shell, the first bearing is fixedly arranged in the driving mounting seat, and the lower end of the driving gear shaft is fixedly arranged on the inner ring of the first bearing, the second bearing is fixedly arranged in the driven mounting seat, and the lower end of the driven gear shaft is fixedly arranged in the inner ring of the second bearing.

4. A dual helix drive structure powerhead as claimed in claim 2, characterized in that: The inner side of the second fixing piece is provided with a pressing groove, the upper groove wall of the pressing groove is attached to the upper surface of the driven mounting seat, and the side groove wall of the pressing groove is attached to the side surface of the driven mounting seat.

5. A dual helix drive structure powerhead as claimed in claim 1, wherein: The rear end top surface of the cross positioning piece and the outer side top surface of the first fixing piece are attached to the lower surface of the installation plate.

6. A dual helix drive structure powerhead as claimed in claim 1, wherein: The upper shell is provided with a lifting lug on the side wall at the motor.

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