CN214722592U

CN214722592U - Speed regulating device of electric tapping machine

Info

Publication number: CN214722592U
Application number: CN202120124567.5U
Authority: CN
Inventors: 焦祥静; 刘洁
Original assignee: ANHUI TONGFA EQUIPMENT CO LTD
Current assignee: ANHUI TONGFA EQUIPMENT CO LTD
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-11-16
Anticipated expiration: 2031-01-18

Abstract

The utility model provides a speed adjusting device of electronic tapping machine has the drilling rod in the lumen of sleeve pipe body, and the drilling rod that links to each other with rotary driving mechanism constitutes rotation in a circumferential direction, the spacing cooperation of axial with the lumen of sleeve pipe body, and feed mechanism driving sleeve pipe body axial displacement and sleeve pipe body constitute the spacing cooperation of circumference with guiding mechanism, its characterized in that: a motor shaft gear of the motor is meshed with a power input shaft input gear on a power input shaft of the rotary driving mechanism, the lower end of the drill rod is connected with a cutter, a gear transmission pair is arranged between the power gear arranged at the upper end of the drill rod and the power input shaft input gear, and the distance between the power input shaft and the drill rod is larger than the distance between a motor shaft gear wheel core and the drill rod. The rotary cutting power and the variable speed transmission mechanism for driving the tapping machine are guaranteed to be arranged at the upper end of a drill rod component, namely an assembly of the sleeve body and the drill rod.

Description

Speed regulating device of electric tapping machine

Technical Field

The utility model relates to a trompil equipment specifically says that is exactly the speed adjusting device of pipeline tapping machine.

Background

In the prior art, pipelines and other similar components are often installed, holes need to be formed in the pipelines for connecting branches for various reasons, obviously, the holes need to be formed in the field at the moment, and how to realize the holes in the field is an urgent problem to be solved.

Because the pipe diameter of waiting trompil pipeline A is great sometimes, and the pipe diameter is 300mm even bigger also very common, to the branch pipe way that waits trompil pipeline A of great pipe fitting sometimes also need rather than the adaptation, the condition that the aperture of trompil is 200mm is very general. In addition, due to the difference of applicable environments, the problem of the size of the opening of the same pipeline A to be opened can also occur, and the material of the pipe fitting is selected from various materials, such as steel pipes, cast iron, plastic materials and the like, so that the cutter is required to have corresponding rotary torque capacity, in other words, the cutter is required to have various rotating speeds which are higher requirements when the pipeline A is used for opening holes in concrete.

For this reason, the applicant of the present application previously filed related patents, aiming at performing tapping work by using an electric driving mode, and mainly realizing the rotary cutting motion of the cutter by using an electric mode, such as "a gear box device of a speed-adjustable tapping machine" (CN109926619A) (abbreviated as document 1), "a tapping machine driven by a permanent magnet brushless dc motor" (CN207982382U) abbreviated as document 2), and "a speed-adjustable electric tapping machine" (CN207982361U) (abbreviated as document 3). In the schemes of the above documents 1, 2, and 3, the motor and the gearbox are installed at the upper end of the drill rod assembly of the tapping machine, so that eccentricity exists between the mass center of the motor and the gearbox and the shaft core of the drill rod assembly, the meshing abrasion of the rack and pinion lifting mechanism is serious due to large eccentric moment, and particularly, the stability of drilling and tapping operations has a defect, and in addition, the adjusting mechanism also has a rationality problem, for example, in the document 1, the second-number first shaft gear 28 is connected with the motor shaft 23 by pushing the pull rod 1, and because the pull rod 1 is arranged at a distance from the motor shaft 23, the connection of the second-number first shaft gear 28 and the motor shaft 23 is difficult to realize by adopting the pull rod 1, and even if the scheme is realized, the scheme is very complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a speed adjusting device of electronic tapping machine guarantees the stability and the reliability of trompil operation under the prerequisite of guaranteeing trompil efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a speed adjusting device of electronic tapping machine, the intracavity of sleeve pipe body has the drilling rod, and the drilling rod that links to each other with rotary driving mechanism constitutes circumferential direction, the spacing cooperation of axial with the lumen of sleeve pipe body, and feed mechanism drive sleeve pipe body axial displacement and sleeve pipe body constitute the spacing cooperation of circumference with guiding mechanism, its characterized in that: a motor shaft gear of the motor is meshed with a power input shaft input gear on a power input shaft of the rotary driving mechanism, the lower end of the drill rod is connected with a cutter, a gear transmission pair is arranged between the power gear arranged at the upper end of the drill rod and the power input shaft input gear, and the distance between the power input shaft and the drill rod is larger than the distance between a motor shaft gear wheel core and the drill rod.

The utility model adopts the above technical scheme just guarantee the rotatory cutting power and the variable speed drive mechanism setting of drive tapping machine and be the upper end of the assembly of sleeve pipe body and drilling rod promptly at the drilling rod subassembly, so that feed actuating mechanism and relevant annex are arranged to the lower extreme, reduce simultaneously and reduce to the minimum with the motor as the power supply and the eccentricity between rotary drive mechanism's the center of mass and the drilling rod, avoid the moment of flexure operation of eccentric moment to the assembly of sleeve pipe body and drilling rod, ensure the stationarity and the reliability of feed mechanism operation.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the present invention;

FIGS. 3, 4 and 5 are enlarged partial views of FIGS. 1 and 2, respectively;

fig. 6 is a structural view of a drill pipe gear shaft according to the present invention.

Detailed Description

It should be noted that, in the present invention, the definition of the upper and lower position relationships is described based on the state shown in the diagram; in addition, the utility model discloses well no special explanation, gear on the gear shaft is with gear shaft circumference, axial fixity connection.

Referring to fig. 1 and 2, a drill rod 20 is arranged in a tube cavity of a sleeve body 10 of a speed regulating device of an electric tapping machine, the drill rod 20 connected with a rotary driving mechanism 70 and the tube cavity of the sleeve body 10 form circumferential rotation and axial limit fit, a feed mechanism drives the sleeve body 10 to move axially, the sleeve body 10 and a guide mechanism form circumferential limit fit, a motor shaft gear 811 on a motor shaft 81 of a motor 80 is meshed with a power input shaft input gear 711 on a power input shaft 71 of the rotary driving mechanism 70, the lower end of the drill rod 20 is connected with a cutter 21, a gear transmission pair is arranged between a power gear 50 arranged at the upper end of the drill rod 20 and the power input shaft input gear 711, and the distance between the power input shaft 71 and the drill rod 20 is greater than the distance between the drill rod shaft gear 811 and the wheel core 20.

In the above solution, the combined movement of the vertical displacement movement and the circumferential rotation movement of the drill rod 20 is the basic requirement for completing the drilling operation. The utility model provides a rotary driving mechanism 70 provides the scheme of drilling moment of torsion for drilling rod 20 for the centre of mass of rotary driving mechanism 70 and motor 80 is partial to one side of drilling rod 20 axle core and arranges, arrange motor shaft 81 of motor 80 between power input shaft 71 on rotary driving mechanism 70 and power gear 50 on drilling rod 20 in space promptly, space between the reduction gear pair on rotary driving mechanism 70 is utilized effectively, be close to the position of motor 80 to drilling rod 20 axle core one side furthest under the gear pair's of arranging each stage transmission ratio condition most compactly promptly, that is to say the utility model discloses arrange the centre of mass that does not consequently lead to rotary driving mechanism 70 to drilling rod 20 axle core one side with motor 80 and become farther away from drilling rod 20 axle core. Of course, the above solution has a significant effect that the eccentric bending moment of the drill rod 20 caused by the common center of mass of the motor 80 and the rotary driving mechanism 70 is weakened to a minimum.

The configuration of the gear transmission pair will be described in detail below.

Preferably, the rotary driving mechanism 70 further comprises a power output shaft 73, and a power output gear on the power output shaft 73 is meshed with the power gear 50 arranged on the drill rod 20.

More preferably, a transition shaft 72 is arranged between the power input shaft 71 and the power output shaft 73, a shaft core of the motor shaft gear 811 is positioned between the transition shaft 72 and the shaft core of the power input shaft 71, a transition shaft input gear 723 on the transition shaft 72 is meshed with a power input shaft output gear 712 on the power input shaft 71, and a transition shaft output gear on the transition shaft 72 is meshed with a power output shaft input gear 731 of the power output shaft 73.

The arrangement of the power input shaft 71, the power output shaft 73 and the transition shaft 72 therebetween provides guarantee for obtaining the multi-stage ideal drilling speed of the drill rod 20.

The power output shaft 73 is provided with a first power output gear 732 and a second power output gear 733, and the power gear 50 arranged on the drill rod 20 is respectively positioned at two working positions meshed with the first power output gear 732 and the second power output gear 733.

According to the scheme, only one gear, namely the power gear 50 is arranged on the drill rod 20 to receive and transmit the torque, so that the manufacturing cost and the cost are reduced, and the axial transposition of the drill rod in a limited axial space is guaranteed.

The power output shaft input gear 731 and the first and second

power output gears

732, 733 arranged on the power output shaft 73 are arranged at intervals from bottom to top, one of the first and second

power output gears

732, 733 is rotatably sleeved on the power output shaft 73 and is meshed with the second transition shaft output gear 722 on the transition shaft 72, in other words, the gear rotatably sleeved on the power output shaft 73 in the first and second

power output gears

732, 733 is meshed with the second transition shaft output gear 722 on the transition shaft 72.

The second power output gear 733 is rotatably sleeved on the power output shaft 73 through a bearing sleeve 734, the second power output gear 733 is meshed with a second transition shaft output gear 722 on the transition shaft 72, and a first transition shaft output gear 721 arranged on the transition shaft 72 is meshed with a power output shaft input gear 731 arranged on the power output shaft 73.

The above solution is significantly reflected in that no mutual interference occurs in the process of meshing the first and second

power output gears

732, 733 with the power gear 50, and the transmission process is specifically described as follows:

the power transmission process is explained with reference to fig. 1, 2, 3, and 4. The working position of the power gear 50 in a state of meshing with the second power output gear 733 is shown in fig. 2 and 4, firstly, when the motor 80 works, the motor shaft gear 811 drives the power input shaft input gear 711 to rotate, the power input shaft 71 and the power input shaft output gear 712 on the power input shaft obtain a rotation torque, the transition shaft input gear 723 on the transition shaft 72 rotates, meanwhile, the transition shaft 72 rotates and drives the transition shaft output gear one 721 and the transition shaft output gear two 722 to rotate, although the tooth numbers of the transition shaft output gear one 721 and the transition shaft output gear two 722 are different, the rotating speeds are the same, here, it can be known that the transition shaft 72 has two torque outputs, one is transmitted from the transition shaft output gear one 721 to the power output shaft input gear 731 so that the power output shaft 73 obtains a rotating speed which is always rotated; in addition, one path is transmitted to the second power output gear 733 through the second transition shaft output gear 722, and the second power output gear 733 is rotatably sleeved on the power output shaft 73, so that the power output shaft 73 and the second power output gear 733 are in a rotating state, and only the rotating speeds of the two are different and no interference phenomenon exists.

Fig. 1 and 3 show a state that the first power output gear 732 is meshed with the power gear 50, and the power gear 50 obtains a rotation torque to drive the drill rod 20; fig. 2 and 4 show a state that the second power output gear 733 is meshed with the power gear 50, and the power gear 50 obtains a rotation torque to drive the drill rod 20.

As can be seen from the above description, when the motor 80 is operated, the first and second

power output gears

732, 733 rotate at different rotational speeds to provide torque, and the rotational speed of the drill rod 20 depends on the engagement state of the power gear 50 with one of the first and second

power output gears

732, 733, and whether the power gear 50 is engaged with the first power output gear 732 or the second power output gear 733 is specifically selected, depends on the specific drilling object and the fast feeding or retracting process before and after drilling.

For realizing the transposition of the power gear 50, the utility model adopts the following preferred scheme:

the power gear 50 and the positioning pull rod 60 are arranged in the same core and form axial limiting connection, two necking parts 61 are axially arranged on the shaft body of the positioning pull rod 60 at intervals, a locking unit is arranged on the outer shell of the rotary driving mechanism 70 and matched with the necking parts 61, and the locking unit is matched with the necking parts 61 and locks the power gear 50 to be in working positions respectively meshed with the first power output gear 732 and the second power output gear 733 when the positioning pull rod 60 axially displaces.

In the above solution, the casing of the rotary driving mechanism 70 is directly provided with hole sites to arrange the positioning pull rod 60 and the upper end of the fixed casing body 10, the connection part between the drill rod 20 and the positioning pull rod 60 can be arranged inside the casing of the rotary driving mechanism 70, and the locking unit is arranged on the outer casing of the rotary driving mechanism 70 to lock the necking part 61 on the positioning pull rod 60, so as to realize the positioning and the positioning of the positioning pull rod 60 and ensure that the power gear 50 is located at the corresponding position.

In order to realize the transposition between the upper and lower positions of power gear 50 and can transmit the torque to drilling rod 20 again, the utility model provides a following preferred scheme, the overhanging upper end of casing outside to rotary driving mechanism 70 of positioning pull rod 60 connect handle 62, the inside lower segment of casing that is located rotary driving mechanism 70 of positioning pull rod 60 is inserted in the upper segment lumen 521 of drilling rod axle sleeve 52, set up on the drilling rod axle sleeve 52 and communicate to the bar hole 522 of inside lumen and the hole length direction of bar hole 522 unanimous with the axial of drilling rod axle sleeve 52, the round pin axle 51 that arranges with the radial direction of drilling rod axle sleeve 52 unanimous links firmly with positioning pull rod 60 and the rod end of round pin axle 51 extends to the outside of drilling rod axle sleeve 52 and links with power gear 50 round pin, drilling rod axle sleeve 52 lower extreme and drilling rod 20 constitute the key-type connection.

The drill rod sleeve 52 in the above scheme is very important, and one of the problems is that the drill rod sleeve 52 and the drill rod 20 are required to rotate synchronously in the circumferential direction; secondly, the drill rod shaft sleeve 52 and the power gear 50 keep synchronous rotation; thirdly, the drill rod shaft sleeve 52 and the power gear 50 can be axially and relatively displaced; fourthly, an arrangement space is provided for the positioning pull rod 60, and the positioning pull rod 60 and the power gear 50 are ensured to be fixedly connected in the axial direction and the circumferential direction; and fifthly, a displacement space is provided for the positioning pull rod 60.

In addition, the drill rod sleeve 52 can also be fixedly connected with the drill rod 20 into a whole, and the lower end of the positioning pull rod 60 can also be in a form of being arranged in a splined hole and being in plug fit with a splined shaft on the drill rod 20.

Claims

1. The utility model provides a speed adjusting device of electronic tapping machine, has drilling rod (20) in the lumen of sleeve pipe body (10), and drilling rod (20) that link to each other with rotary driving mechanism (70) constitute circumferential direction, the spacing cooperation of axial with the lumen of sleeve pipe body (10), and feed mechanism drive sleeve pipe body (10) axial displacement and sleeve pipe body (10) constitute the spacing cooperation of circumference with guiding mechanism, its characterized in that: a motor shaft gear (811) on a motor shaft (81) of a motor (80) is meshed with a power input shaft input gear (711) on a power input shaft (71) of a rotary driving mechanism (70), the lower end of a drill rod (20) is connected with a cutter (21), a gear transmission pair is arranged between a power gear (50) arranged at the upper end of the drill rod (20) and the power input shaft input gear (711), and the distance between the power input shaft (71) and the drill rod (20) is larger than the distance between a wheel core of the motor shaft gear (811) and the drill rod (20).

2. The speed regulating device of an electric tapping machine according to claim 1, wherein: the rotary driving mechanism (70) further comprises a power output shaft (73), and a power output gear on the power output shaft (73) is meshed with a power gear (50) arranged on the drill rod (20).

3. The speed regulating device of an electric tapping machine according to claim 1 or 2, wherein: a transition shaft (72) is arranged between the power input shaft (71) and the power output shaft (73), the shaft core of a motor shaft gear (811) is positioned between the transition shaft (72) and the shaft core of the power input shaft (71), a transition shaft input gear (723) on the transition shaft (72) is meshed with a power input shaft output gear (712) on the power input shaft (71), and a transition shaft output gear on the transition shaft (72) is meshed with a power output shaft input gear (731) on the power output shaft (73).

4. The speed regulating device of an electric tapping machine according to claim 1 or 2, wherein: the power output shaft (73) is provided with a first power output gear (732) and a second power output gear (733), and the power gear (50) arranged on the drill rod (20) is respectively positioned at two working positions meshed with the first power output gear (732) and the second power output gear (733).

5. The speed control device of an electric tapping machine according to claim 4, wherein: the power output shaft input gear (731) and the first and second power output gears (732, 733) arranged on the power output shaft (73) are arranged at intervals from bottom to top, one of the first and second power output gears (732, 733) is rotatably sleeved on the power output shaft (73) and is meshed with the second transition shaft output gear (722) on the transition shaft (72).

6. The speed control device of an electric tapping machine according to claim 5, wherein: the second power output gear (733) is rotatably sleeved on the power output shaft (73) through a bearing sleeve (734), the second power output gear (733) is meshed with a second transition shaft output gear (722) on the transition shaft (72), and a first transition shaft output gear (721) is further arranged on the transition shaft (72) and meshed with a power output shaft input gear (731) arranged on the power output shaft (73).

7. The speed control device of an electric tapping machine according to claim 4, wherein: the power gear (50) and the positioning pull rod (60) are arranged in the same core and form axial limiting connection, two necking parts (61) are axially arranged on the shaft body of the positioning pull rod (60) at intervals, a locking unit is arranged on the outer shell of the rotary driving mechanism (70) and matched with the necking parts (61), and the locking unit is matched with the necking parts (61) during axial displacement of the positioning pull rod (60) and locks the power gear (50) to be in working positions which are respectively meshed with the first power output gear (732) and the second power output gear (733).

8. The speed regulating device of an electric tapping machine according to claim 7, wherein: the upper end of the position adjusting pull rod (60), extending out to the outer portion of a shell of the rotary driving mechanism (70), is connected with a handle (62), the lower section of the position adjusting pull rod (60), located inside the shell of the rotary driving mechanism (70), is inserted into an upper section pipe cavity (521) of the drill rod shaft sleeve (52), a strip-shaped hole (522) communicated to the inner pipe cavity is formed in the drill rod shaft sleeve (52), the hole length direction of the strip-shaped hole (522) is consistent with the axial direction of the drill rod shaft sleeve (52), a pin shaft (51) which is consistently arranged in the radial direction of the drill rod shaft sleeve (52) is fixedly connected with the position adjusting pull rod (60), the rod end of the pin shaft (51) extends to the outer portion of the drill rod shaft sleeve (52) and is in pin connection with the power gear (50), and the lower end of the drill rod shaft sleeve (52) is in key connection with the drill rod (20).