Drill bit feeding device of drilling machine

Abstract

The utility model relates to the technical field of railway equipment, in particular to a drilling machine drill bit feeding device which comprises a driving mechanism, a first rack, a second rack, a first gear and a second gear. The driving mechanism drives the spline shaft to rotate; the first rack and the second rack are located on the two sides of the spline shaft correspondingly, connected with the spline shaft and used for driving the spline shaft to move in the axial direction. The first gear is meshed with the first rack, and the second gear is meshed with the second rack. According to the drill bit feeding device of the drilling machine, the gear and the rack are reasonably arranged and located on the left side and the right side of the spline shaft respectively, the rack does not interfere with a drill bit and other parts in the axial direction, and therefore the axial size of the drill bit feeding device of the drilling machine is reduced, the overall size of the drilling machine is reduced, and the drilling efficiency is improved. The use is easier; in addition, through the arrangement of the double gears and the double racks, the stability of axial movement of the drill bit can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of railway machines, in particular to a drill bit feeding device for a drilling machine. Background Art

[0002] At present, the drilling machines mainly used by the railway track maintenance and signal systems for drilling holes in steel rails are powered by small internal combustion engines and AC motors. The internal combustion drilling machine has a large noise, is difficult to ignite in a cold environment, and has a relatively high failure rate of the engine; the AC motor needs to be equipped with a generator, is inconvenient to carry, and has a relatively high use cost. The drilling machines of the above two power forms have relatively large overall dimensions, especially the structural layout of the drill bit feeding occupies a large space, resulting in the inability to use the drilling machine in a relatively narrow space. Content of the Utility Model

[0003] The utility model provides a drill bit feeding device for a drilling machine to solve the defect that the structural layout of the drill bit feeding in the drilling machine in the background art occupies a large space, resulting in the inability to use the drilling machine in a relatively narrow space.

[0004] The utility model provides a drill bit feeding device for a drilling machine, which is arranged on a machine base and comprises:

[0005] A driving mechanism for driving a spline shaft to rotate;

[0006] A first rack and a second rack, which are respectively located on both sides of the spline shaft and are connected to the spline shaft for driving the spline shaft to move axially, and a drill bit is installed on the spline shaft;

[0007] A first gear and a second gear, the first gear meshes with the first rack, and the second gear meshes with the second rack.

[0008] According to the drill bit feeding device for a drilling machine provided by the utility model, it further comprises: a connecting shaft, one end of the connecting shaft is connected to the first gear, and the other end of the connecting shaft is connected to the second gear.

[0009] According to the drill bit feeding device for a drilling machine provided by the utility model, it further comprises:

[0010] A spline sleeve, the spline shaft is adapted to be inserted into the spline sleeve and engage;

[0011] A first bevel gear, which is connected to the driving mechanism;

[0012] A second bevel gear, which is arranged on the spline sleeve and is connected to the first bevel gear.

[0013] According to the drill bit feeding device provided by the present utility model, a first spline is formed on the outer wall of the spline sleeve, a second spline is formed on the inner wall of the second bevel gear, and the second spline meshes with the first spline;

[0014] A third spline is formed on the inner wall of the spline sleeve, a fourth spline is formed on the outer wall of the spline shaft, and the fourth spline can mesh with the third spline.

[0015] According to the drill bit feeding device provided by the present utility model, limiting grooves are formed on both the first rack and the second rack, and a limiting member is formed on the machine base. The limiting member is inserted into the limiting groove to limit the first rack and the second rack.

[0016] According to the drill bit feeding device provided by the present utility model, it further includes:

[0017] A bearing seat, one end of the bearing seat is connected to the first rack, and the other end of the bearing seat is connected to the second rack;

[0018] A bearing is installed in the bearing seat, and the bearing is sleeved on the spline shaft.

[0019] According to the drill bit feeding device provided by the present utility model, it further includes: a first rotating member and a second rotating member. The first rotating member and the second rotating member are respectively rotatably exposed on the machine base, and polygonal slot holes or polygonal protrusions are formed on both the first rotating member and the second rotating member;

[0020] And the first rotating member is fixed on the first gear, and the second rotating member is fixed on the second gear.

[0021] According to the drill bit feeding device provided by the present utility model, it further includes: a clamping mechanism. The clamping mechanism is arranged on the machine base and is used to clamp the drill bit feeding device on the rail.

[0022] A drill bit feeding device provided by the present utility model includes: a driving mechanism, a first rack, a second rack, a first gear and a second gear; the driving mechanism is used to drive the spline shaft to rotate;

[0023] The first rack and the second rack are respectively located on both sides of the spline shaft and are connected to the spline shaft for driving the spline shaft to move axially. The drill bit is installed on the spline shaft. The first gear meshes with the first rack, and the second gear meshes with the second rack. A drill bit feeding device of a drilling machine provided by the present utility model, through the reasonable arrangement of the gears and racks, makes them respectively located on the left and right sides of the spline shaft, so that the racks do not interfere with parts such as the drill bit axially, thereby reducing the axial dimension of the drill bit feeding device of the drilling machine, and further reducing the overall dimension of the drilling machine, making it easier to use. Moreover, by setting the double gears and double racks, the stability of the axial movement of the drill bit can be ensured, thereby improving the safety of the drill bit feeding device of the drilling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the first perspective of the drill bit feeding device of the drilling machine provided in one embodiment of the present utility model.

[0026] Figure 2 It is a schematic structural diagram of the second perspective of the drill bit feeding device of the drilling machine provided in one embodiment of the present utility model.

[0027] Figure 3 It is the front view of the drill bit feeding device of the drilling machine provided in one embodiment of the present utility model.

[0028] Figure 4 It is a schematic internal structure diagram of the drill bit feeding device of the drilling machine provided in one embodiment of the present utility model.

[0029] REFERENCE NUMERALS:

[0030] 1: clamping mechanism; 21: driving motor; 22: speed reducer; 23: spline shaft; 24: first bevel gear; 25: second bevel gear; 26: spline sleeve; 27: bearing; 28: oil seal; 311: first gear; 312: second gear; 321: first rotating member; 322: second rotating member; 331: first rack; 332: second rack; 34: bearing seat; 35: connecting shaft; 36: copper sleeve; 37: limiting groove; 4: machine base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0034] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0035] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] The following will describe a drill bit feeding device of the present utility model in conjunction with Figures 1 to 4 The drill bit feeding device of the drilling machine is provided on the machine base 4. The machine base 4 serves as the main body of the drilling machine and is the support and installation structure for the drill bit feeding device of the drilling machine.

[0037] The drill bit feeding device of the drilling machine includes: a driving mechanism, a first rack 331, a second rack 332, a first gear 311, a second gear 312, etc.

[0038] Among them, the driving mechanism is used to drive the spline shaft 23 to rotate; the first rack 331 and the second rack 332 are respectively located on both sides of the spline shaft 23 and are connected to the spline shaft 23 for driving the spline shaft 23 to move axially. The drill bit is installed on the spline shaft 23, and the drill bit is installed at the front end of the spline shaft 23, and the drill bit is driven to rotate by the spline shaft 23; the first gear 311 meshes with the first rack 331, and the second gear 312 meshes with the second rack 332.

[0039] Specifically, the driving mechanism serves as the power source for the rotation of the drill bit. By driving the rotation of the spline shaft 23, it further drives the rotation of the drill bit to achieve the drilling operation. And the first rack 331, the second rack 332, the first gear 311, and the second gear 312 serve as the feeding structure of the drill bit: the first gear 311 and the first rack 331 are located on one side of the drill bit, and the second gear 312 and the second rack 332 are located on the other side of the drill bit. Through the gear and rack structure, the rotation of the gear can be converted into the linear motion of the rack, thereby realizing the feeding of the drill bit.

[0040] The usage process of the drill bit feeding device of the present utility model is as follows:

[0041] First, by rotating the first gear 311 and the second gear 312, the drill bit moves axially under the drive of the first rack 331 and the second rack 332. After the drill bit moves into place; then, start the driving mechanism to drive the spline shaft 23 to rotate for the drilling operation.

[0042] It should be understood that the first gear 311 and the second gear 312 can be rotated manually / electrically. If manual driving is adopted, a rotating part can be installed outside the machine base 4, and the rotating part can be rotated by a tool to drive the gear to rotate, such as a square sleeve or a hexagonal bolt, etc. If electric driving is adopted, a motor can be equipped to drive the gear to rotate. In this embodiment, the manual driving method is preferably adopted.

[0043] A drill bit feeding device of a drilling machine provided by the present utility model, through reasonable arrangement of gears and racks, makes them located on the left and right sides of the spline shaft 23 respectively, so that the rack does not interfere with parts such as the drill bit axially, thereby reducing the axial dimension of the drill bit feeding device of the drilling machine. Moreover, by setting the double gears and double racks, the stability of the axial movement of the drill bit can be ensured, thereby improving the safety of the drill bit feeding device of the drilling machine.

[0044] A drill bit feeding device of a drilling machine provided by the present utility model includes: a driving mechanism, a first rack 331, a second rack 332, a first gear 311 and a second gear 312. The driving mechanism is used to drive the spline shaft 23 to rotate. The first rack 331 and the second rack 332 are respectively located on both sides of the spline shaft 23 and are connected to the spline shaft 23 for driving the spline shaft 23 to move axially. The drill bit is installed on the spline shaft 23. The first gear 311 meshes with the first rack 331, and the second gear 312 meshes with the second rack 332. A drill bit feeding device of a drilling machine provided by the present utility model, through reasonable arrangement of gears and racks, makes them located on the left and right sides of the spline shaft 23 respectively, so that the rack does not interfere with parts such as the drill bit axially, thereby reducing the axial dimension of the drill bit feeding device of the drilling machine, and further reducing the overall dimension of the drilling machine, making it easier to use. Moreover, by setting the double gears and double racks, the stability of the axial movement of the drill bit can be ensured, thereby improving the safety of the drill bit feeding device of the drilling machine.

[0045] In one embodiment of the present utility model, the drill bit feeding device of the drilling machine further includes: a connecting shaft 35. One end of the connecting shaft 35 is connected to the first gear 311, and the other end of the connecting shaft 35 is connected to the second gear 312. In this embodiment, the first gear 311 and the second gear 312 rotate synchronously, and they are connected by the connecting shaft 35. The extending direction of the connecting shaft 35 is perpendicular to the extending direction of the drill bit to determine the feeding direction of the drill bit.

[0046] In one embodiment of the present utility model, the drill bit feeding device of the drilling machine further includes: a spline sleeve 26, a first bevel gear 24, and a second bevel gear 25. Among them, the spline shaft 23 is adapted to be inserted into and engaged with the spline sleeve 26, and the first bevel gear 24 is connected to the driving mechanism; the second bevel gear 25 is provided on the spline sleeve 26 and is connected to the first bevel gear 24. In this embodiment, in order to further reduce the device size, by connecting two bevel gears, the transmission direction is changed. As shown in the structures of Figure 1 and Figure 4 , after the direction is changed by the first bevel gear 24 and the second bevel gear 25, the driving mechanism can be vertically arranged, while the spline sleeve 26 is horizontally arranged, which also reduces the axial dimension of the drill bit feeding device of the drilling machine.

[0047] In one embodiment of the present utility model, a first spline is formed on the outer wall of the spline sleeve 26, a second spline is formed on the inner wall of the second bevel gear 25, and the second spline meshes with the first spline; a third spline is formed on the inner wall of the spline sleeve 26, a fourth spline is formed on the outer wall of the spline shaft, and the spline shaft 23 can be correspondingly inserted into the spline sleeve 26, and the fourth spline can mesh with the third spline. In this embodiment, the transmission between the second bevel gear 25 and the spline sleeve 26 is realized through the meshing of the second spline and the first spline, and the two rotate coaxially; when the gear is rotated, the rack drives the drill bit to axially move to the spline sleeve 26, and its transmission is realized through the meshing of the fourth spline and the third spline.

[0048] In one embodiment of the present utility model, the driving mechanism includes: a speed reducer 22 and a driving motor 21. Among them, the speed reducer 22 is connected to the first bevel gear 24; the output shaft of the driving motor 21 is connected to the speed reducer 22. The driving motor 21 serves as the driving force for the rotation of the drill bit. After being decelerated by the speed reducer 22, the rotation of the rotating sleeve 26 is driven by the bevel gear.

[0049] In one embodiment of the present utility model, limiting grooves 37 are formed on both the first rack 331 and the second rack 332, and a limiting member is formed on the machine base 4, and the limiting member is inserted into the limiting groove 37 to limit the first rack 331 and the second rack 332. As shown in Figure 1 , in this embodiment, by processing limiting grooves 37 along their respective lengths on the first rack 331 and the second rack 332 and cooperating with the limiting member (not shown in the figure) provided on the machine base 4, the first rack 331 and the second rack 332 can only move within the length range of the limiting groove 37, restricting the stroke of the rack feeding. Preferably, the limiting member can be a bolt.

[0050] In one embodiment of the present utility model, the drill bit feeding device of the drilling machine further includes: a bearing block 34. One end of the bearing block 34 is connected to the first rack 331, and the other end of the bearing block 34 is connected to the second rack 332; a bearing 27 is installed in the bearing block 34, and the bearing 27 is sleeved on the spline shaft. In this embodiment, one ends of the first rack 331 and the second rack 332 are respectively connected to the left and right sides of the bearing block 34 to drive the bearing block 34 to move. The bearing 27 is installed on the bearing block 34, and the rotation of the drill bit is carried by the bearing 27, and the drill bit is driven to perform axial movement. Specifically, the bearing block 34 is installed inside the machine base 4.

[0051] In one embodiment of the present utility model, an oil seal 28 is arranged on one side of the bearing 27.

[0052] In one embodiment of the present utility model, the drill bit feeding device of the drilling machine further includes: a first rotating member 321 and a second rotating member 322. The first rotating member 321 and the second rotating member 322 are respectively rotatably exposed on the machine base 4, and a polygonal slot or a polygonal protrusion is formed on both the first rotating member 321 and the second rotating member 322; and the first rotating member 321 is fixed on the first gear 311, and the second rotating member 322 is fixed on the second gear 312. Preferably, as Figure 1 and Figure 2 shown, the first rotating member 321 and the second rotating member 322 can adopt a square sleeve, and a square slot is formed. A tool can be inserted into the square slot to rotate the first rotating member 321 and the second rotating member 322, and then drive the first gear 311 and the second gear 312 to rotate. In addition, the first rotating member 321 and the second rotating member 322 are installed on the outer wall of the machine base 4 through the mounting holes, which is convenient for construction personnel to use.

[0053] In one embodiment of the present utility model, the drill bit feeding device of the drilling machine further includes: a copper sleeve 36, the inner hole of which is sleeved on the outer circle of the square sleeve, and two copper sleeves 36 are respectively installed in the corresponding holes on both sides of the machine base 4, and its function is equivalent to that of a bearing, playing a role of limiting and supporting.

[0054] In one embodiment of the present utility model, the drill bit feeding device of the drilling machine further includes: a clamping mechanism 1, and the clamping mechanism 1 is arranged on the machine base 4 and is used to set the drill bit feeding device of the drilling machine on the rail. It can be understood that the clamping mechanism 1 can clamp the drill bit feeding device of the drilling machine on the rail by means of clamping to achieve its locking and fixing function.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drilling machine drill bit feeding device, characterized in that: It is arranged on the machine base (4) and comprises: A driving mechanism, used for driving the spline shaft (23) to rotate; a first rack (331) and a second rack (332), wherein the first rack (331) and the second rack (332) are respectively located on two sides of the spline shaft (23) and connected to the spline shaft (23) and are used to drive the spline shaft (23) to move axially, and the drill bit is mounted on the spline shaft (23); A first gear (311) and a second gear (312), wherein the first gear (311) is meshed with the first rack (331), and the second gear (312) is meshed with the second rack (332).

2. The drilling machine drill bit feeding device according to claim 1, characterized in that: Also includes: A connecting shaft (35), one end of the connecting shaft (35) being connected to the first gear (311), and the other end of the connecting shaft (35) being connected to the second gear (312).

3. The drilling machine drill bit feeding device according to claim 1, characterized in that: Also includes: A spline sleeve (26), wherein the spline shaft (23) is suitable for being inserted into and engaged with the spline sleeve (26); A first bevel gear (24), the first bevel gear (24) being connected to the driving mechanism; A second bevel gear (25), the second bevel gear (25) being arranged on the spline sleeve (26) and connected to the first bevel gear (24).

4. The drilling machine drill bit feeding device according to claim 3, characterized in that: The outer wall of the spline sleeve (26) is formed with a first spline, the inner wall of the second bevel gear (25) is formed with a second spline, and the second spline meshes with the first spline; The inner wall of the spline sleeve (26) is formed with a third spline, and the outer wall of the spline shaft (23) is formed with a fourth spline, and the fourth spline can mesh with the third spline.

5. The drilling machine drill bit feeding device according to claim 1, characterized in that: A limiting groove (37) is formed on the first rack (331) and the second rack (332), and a limiting member is formed on the machine base (4). The limiting member is inserted into the limiting groove (37) to limit the first rack (331) and the second rack (332).

6. The drilling machine drill bit feeding device according to claim 1, characterized in that: Also includes: a bearing seat (34), one end of the bearing seat (34) being connected to the first rack (331), and the other end of the bearing seat (34) being connected to the second rack (332); A bearing (27) is installed in the bearing seat (34), and the bearing (27) is sleeved on the spline shaft (23).

7. The drilling machine drill bit feeding device according to claim 1, characterized in that: Also includes: a first rotating member (321) and a second rotating member (322), wherein the first rotating member (321) and the second rotating member (322) are respectively rotatably exposed on the machine base (4), and a polygonal slot hole or a polygonal protrusion is formed on the first rotating member (321) and the second rotating member (322); Furthermore, the first rotating member (321) is fixed on the first gear (311), and the second rotating member (322) is fixed on the second gear (312).

8. The drilling machine drill bit feeding device according to any one of claims 1 to 7, characterized in that: Also includes: A clamping mechanism (1), wherein the clamping mechanism (1) is arranged on the machine base (4) and is used to clamp the drilling machine drill bit feeding device on the rail.

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