Lifting transmission device of drilling machine

Abstract

The utility model relates to the field of drilling machines, in particular to a lifting transmission device of a drilling machine. Comprising a base, a supporting column, a placing platform, a drilling mechanism and a lifting mechanism, and the lifting mechanism is fixedly arranged below the drilling mechanism; the lifting mechanism comprises a mounting shell and a lifting mechanism, wherein the mounting shell is provided with a mounting cavity; the first chain wheel piece is provided with an internal thread, the internal thread is arranged on the supporting column in a matched mode, and a plurality of teeth are arranged on the outer side of the first chain wheel piece; the second chain wheel is matched with the first chain wheel piece through a chain; the driving motor is arranged on the mounting shell, and the output end of the driving motor is connected with the second chain wheel; wherein a strip-shaped through hole is formed in the mounting shell, and the output end of the driving motor is arranged in the strip-shaped through hole; the distance between the first chain wheel piece and the second chain wheel piece can be adjusted through the lifting mechanism, so that the tightness of the chain wheels is adjusted, the service life of the chain wheels is longer, and transmission is more stable.

Description

Technical Field

[0001] The utility model relates to a drilling machine field, in particular to a lifting transmission device of a drilling machine. Background Art

[0002] The existing drilling machine usually makes the drilling mechanism rise and fall through a nut and screw rod structure. By controlling the rotation of the nut, the lifting of the drilling mechanism can be controlled, and the rotation of the nut can be controlled through the transmission of a motor and a sprocket.

[0003] However, when using sprocket transmission, due to the tightness of the sprocket, being too tight may cause wear, and being too loose may cause disengagement.

[0004] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a technical effect of a transmission device that can adjust the tightness of a sprocket for the above existing technical problems.

[0006] In view of this, the utility model provides a lifting transmission device of a drilling machine, which is characterized by comprising:

[0007] A base;

[0008] A support column, the support column is arranged on the base, and the support column is provided with an external thread;

[0009] A placement platform, the placement platform is arranged at the middle position of the support column;

[0010] A drilling mechanism, the drilling mechanism is arranged on the support column and above the placement platform;

[0011] A lifting mechanism, the lifting mechanism is fixedly arranged under the drilling mechanism;

[0012] The lifting mechanism comprises:

[0013] An installation housing, the installation housing is provided with an installation cavity;

[0014] A first sprocket member, the first sprocket member is provided with an internal thread and is in threaded fit with the support column, and a plurality of teeth are arranged on the outer side of the first sprocket member;

[0015] A second sprocket, the second sprocket is cooperated with the first sprocket member through a chain;

[0016] A driving motor, the driving motor is arranged on the installation housing, and the output end is connected with the second sprocket;

[0017] Wherein, a long strip through hole is arranged on the installation housing, and the output end of the driving motor is arranged in the long strip through hole.

[0018] Further, the first sprocket member is disposed within the mounting housing, and a plain bearing is provided between the first sprocket member and the mounting housing.

[0019] Further, the drive motor is disposed on the upper end surface of the mounting housing.

[0020] Further, the drill bit assembly includes:

[0021] An engaging sleeve rod, which is disposed within the frame and engages with the adjusting shaft rod;

[0022] A rotary drill bit, which is disposed within the engaging sleeve rod;

[0023] Wherein, a first limiting groove is provided on the engaging sleeve rod, and the first limiting groove is parallel to the axis of the engaging sleeve rod. A first limiting portion is provided within the frame that fits with the engaging sleeve rod.

[0024] Further, the mounting housing and the drilling mechanism are detachably connected.

[0025] Further, shaft rods are provided on both sides of the second sprocket, and the shaft rods are in clearance fit within the mounting housing.

[0026] The beneficial effects of the present utility model are:

[0027] 1. The lifting mechanism provided in the present utility model can adjust the distance between the first sprocket member and the second sprocket, thereby adjusting the tightness of the sprockets, making the service life of the sprockets longer and the transmission more stable.

[0028] 2. The plain bearing provided between the first sprocket member and the mounting housing of the present utility model can reduce the wear between the two and extend the service life. Description of the Drawings

[0029] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0030] Figure 2 is a left-view structural schematic diagram of the present utility model;

[0031] Figure 3 is Figure 2 a structural schematic diagram of area A in

[0032] Figure 4 is Figure 3 a structural schematic diagram of area B in

[0033] The markings in the drawings are shown as:

[0034] 1, base; 2, support column; 3, placement platform; 4, mounting housing; 5, first sprocket member; 6, second sprocket; 7, drive motor; 8, long strip through-hole; 9, plain bearing; 10, shaft rod; 11, drilling mechanism; 12, chain. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0036] Embodiment 1:

[0037] This embodiment provides a lifting device for a drilling machine, including:

[0038] Base 1;

[0039] Support column 2, the support column 2 is arranged on the base 1, and the support column 2 is provided with an external thread;

[0040] Placement platform 3, the placement platform 3 is arranged at the middle position of the support column 2;

[0041] Drilling mechanism 11, the drilling mechanism 11 is arranged on the support column 2 and above the placement platform 3;

[0042] Lifting mechanism, the lifting mechanism is fixedly arranged under the drilling mechanism 11;

[0043] The lifting mechanism includes:

[0044] Installation housing 4, the installation housing 4 is provided with an installation cavity;

[0045] First sprocket member 5, the first sprocket member 5 is provided with an internal thread and is threadedly engaged on the support column 2. A plurality of teeth are provided on the outer side of the first sprocket member 5;

[0046] Second sprocket 6, the second sprocket 6 is connected to the first sprocket member 5 through a chain 12;

[0047] Drive motor 7, the drive motor 7 is arranged on the installation housing 4, and the output end is connected to the second sprocket 6;

[0048] Wherein, a long strip through hole 8 is provided on the installation housing 4, and the output end of the drive motor 7 is arranged in the long strip through hole 8.

[0049] The base 1 is a plate-like structure and is in the shape of a combination of a rectangle and a semi-circle. The support column 2 is provided with threads and a flange structure at the lower end. The flange structure is fixed to the upper end surface of the base 1 by bolts. The placement platform 3 is provided with a first mounting hole. The support column 2 is arranged in the first mounting hole, and an opening is also provided at the edge of the first mounting hole. Two fixing blocks are also provided at the opening position, and bolts passing through the two fixing blocks are also provided. By turning the nuts on the bolts, the distance between the two fixing blocks is adjusted to adjust the tightness between the first mounting hole and the support column 2. When the distance between the two fixing blocks is reduced, the inner diameter of the first mounting hole shrinks, and the first mounting hole and the support column 2 are in interference fit, so that the placement platform 3 is fixed on the support column 2. The placement platform 3 is provided with a chip removal groove, and the chip removal groove runs through the placement platform 3.

[0050] The lifting mechanism is fixedly connected under the drilling mechanism 11. The lifting mechanism includes: a mounting housing 4, a first sprocket member 5, a second sprocket 6, a chain 12, and a driving motor 7. The mounting housing 4 is a cubic structure, and one side is penetrated, so that the mounting housing 4 is a housing without end faces on both sides. Internal threads are provided on the inner wall of the first sprocket member 5, and the first sprocket member 5 is sleeved on the support column 2. A number of teeth are provided on the outside of the first sprocket member 5. A second sprocket 6 is arranged in the mounting housing 4. The first sprocket member 5 and the second sprocket 6 are meshed and matched together by the chain 12. A driving motor 7 is also fixedly provided on the outside of the mounting housing 4. The driving shaft of the driving motor 7 is connected to the second sprocket 6 through a coupling, or the second sprocket 6 can be sleeved on the driving shaft of the driving motor 7. When the driving shaft of the driving motor 7 rotates, the second sprocket 6 is controlled to rotate. The second sprocket 6 drives the first sprocket member 5 to rotate through the chain 12. Through the threaded fit between the first sprocket member 5 and the support column 2, when the first sprocket member 5 rotates, the mounting housing 4 can be driven to move up and down. And it should be noted that the upward extension lifting angle of the thread is relatively small. When the first sprocket member 5 rotates, the force of the support column 2 resisting the rotation of the first sprocket member 5 is not enough to resist the friction force between the drilling mechanism 11 and the support column 2, and it is impossible to cause the drilling mechanism 11 to rotate around the support column 2 by itself. Therefore, the drilling mechanism 11 can move up and down without limiting.

[0051] Through the transmission of the chain 12, motion and power can be transmitted in the case of a relatively large center distance between the two shafts. It can work under low speed, heavy load, high temperature conditions and dusty conditions. It can ensure an accurate transmission ratio, transmit a relatively large power, and the force acting on the shaft is relatively small, and the transmission efficiency is high.

[0052] The long strip through hole 8 is arranged on the center line connecting the centers of the first sprocket member 5 and the second sprocket 6. The long strip through hole 8 is collinear with the center line, and the center distance between the first sprocket member 5 and the second sprocket 6 can be adjusted within the long strip through hole 8, so as to adjust the tightness between the first sprocket member 5 and the second sprocket 6. Moreover, the driving motor 7 can be directly fixed by drilling holes on the installation housing 4 with a drill bit, or the fixing holes on the installation housing 4 can be changed into long strips, and the driving motor 7 can be clamped on the installation housing 4 by using fasteners to pass through the fixing holes.

[0053] Embodiment 2:

[0054] This embodiment provides a lifting device for a drilling machine. In addition to including the technical solutions of the above embodiment, it also has the following technical features.

[0055] The first sprocket member 5 is arranged inside the installation housing 4, and a plain bearing 9 is provided between the first sprocket member 5 and the installation housing 4.

[0056] Plain bearings 9 are arranged on both the upper and lower surfaces of the first sprocket member 5, and a groove for installing the plain bearing 9 is provided inside the installation housing 4. The plain bearing 9 is clamped between the first sprocket member 5 and the installation housing 4. When the drilling mechanism 11 moves upward, the upper end surface of the first sprocket member 5 abuts against the installation housing 4. Through the plain bearing 9, the friction between the upper end surface of the first sprocket member 5 and the installation housing 4 is reduced, and at the same time, rotation is ensured. When the drilling mechanism 11 moves downward, the lower end surface of the first sprocket member 5 abuts against the installation housing 4. Through the plain bearing 9, the friction between the lower end surface of the first sprocket member 5 and the installation housing 4 is reduced, and at the same time, rotation is ensured, increasing the service life of the first sprocket member 5 and the installation housing 4 and reducing costs.

[0057] The driving motor 7 is arranged on the upper end surface of the installation housing 4.

[0058] The driving motor 7 is arranged on the upper end surface of the installation housing 4 through screws, so that the installation can support the driving motor 7 and hold up the driving motor 7. Since the gravity acts downward, the driving motor 7 is most stable when arranged on the upper end surface of the installation housing 4, increasing the stability of the driving motor 7.

[0059] Embodiment 3:

[0060] This embodiment provides a lifting device for a drilling machine. In addition to including the technical solutions of the above embodiment, it also has the following technical features.

[0061] Shaft rods 10 are arranged on both sides of the second sprocket 6, and the shaft rods 10 are in clearance fit inside the installation housing 4.

[0062] On both sides of the second sprocket 6, there are shaft rods 10. Through holes are provided on the upper and lower end faces of the installation housing 4, and the shaft rods 10 are inserted. For the convenience of installing the shaft rods 10 and the second sprocket 6 to be detachable, there are limits on both sides of the second sprocket 6, which can make the rotation of the second sprocket 6 more stable.

[0063] The installation housing 4 and the drilling mechanism 11 are detachably connected.

[0064] The installation housing 4 and the drilling assembly are fixed together by bolts. There is a mounting plate in the drilling mechanism 11. The mounting plate is a thin plate. The bolts pass through the installation housing 4 and the mounting plate, making the lifting mechanism and the drilling assembly detachable and replaceable, reducing the maintenance cost.

[0065] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A lifting transmission device for a drilling machine, characterized in that, Comprising: Base (1); Support column (2), the support column (2) is arranged on the base (1), and the support column (2) is provided with an external thread; Placement platform (3), the placement platform (3) is arranged at the middle position of the support column (2); Drilling mechanism (11), the drilling mechanism (11) is arranged on the support column (2) and above the placement platform (3); Lifting mechanism, the lifting mechanism is fixedly arranged under the drilling mechanism (11); The lifting mechanism includes: Installation housing (4), the installation housing (4) is provided with an installation cavity; First sprocket member (5), the first sprocket member (5) is provided with an internal thread and is thread - fitted on the support column (2), and a plurality of teeth are arranged on the outer side of the first sprocket member (5); Second sprocket (6), the second sprocket (6) is cooperated with the first sprocket member (5) through a chain (12); Drive motor (7), the drive motor (7) is arranged on the installation housing (4), and the output end is connected to the second sprocket (6); Wherein, a long strip through - hole (8) is arranged on the installation housing (4), and the output end of the drive motor (7) is arranged in the long strip through - hole (8).

2. The lifting transmission device of a drilling machine according to claim 1, wherein, The first sprocket member (5) is arranged in the installation housing (4), and a plain bearing (9) is arranged between the first sprocket member (5) and the installation housing (4).

3. The lifting transmission device of a drilling machine according to claim 1, characterized in that, The drive motor (7) is arranged on the upper end face of the installation housing (4).

4. The lifting transmission device of a drilling machine according to claim 1, characterized in that, The installation housing (4) and the drilling mechanism (11) are detachably connected.

5. The lifting transmission device of a drilling machine according to claim 1, characterized in that, Shaft rods (10) are arranged on both sides of the second sprocket (6), and the shaft rods (10) are in clearance fit in the installation housing (4).

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