Engine tappet drilling device

Abstract

The utility model discloses an engine tappet drilling device, which belongs to the field of engines and comprises a drilling mechanism, a telescopic sleeve mechanism and a cooling mechanism, the drilling mechanism comprises a support, a motor module is arranged on the upper side surface of the support, the output end of the motor module is fixedly connected with a drill rod, and the telescopic sleeve mechanism comprises a corrugated pipe. According to the engine tappet drilling device, the telescopic sleeve mechanism is arranged outside the drill rod of the drilling device, and the drilling device can stretch out and draw back along with the drill rod during drilling, so that the drilling working environment forms a relatively closed environment, and splashing of drilling scraps is avoided; and the three spray heads are arranged in the telescopic sleeve mechanism through the annular pipe, cooling water can be always located in the telescopic sleeve mechanism when the spray heads spray the cooling water to the drill rod, waste caused by splashing of the cooling water is avoided, meanwhile, the cooling water fully acts on the drill rod in a narrow space, and the service life of the drill rod is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine tappet drilling device. Background Art

[0002] The engine tappet is the follower of the cam. Its main function is to transmit the movement and force from the cam to the push rod or valve, and at the same time bear the lateral force exerted by the cam and transmit it to the engine body or cylinder head. The tappet is an important part of the engine valve train and has an important impact on the performance and reliability of the engine. In the processing of the engine tappet, the drilling device is used to process the required orifice on the tappet.

[0003] When the drilling device is drilling a hole in the tappet, the continuous operation of the drill rod will generate high temperature. Currently, the drill rod is cooled by cooling water through a single nozzle, but the single nozzle can only spray the drill rod from one direction. The sprayed cooling water will not only splash out and cause a waste of cooling water, but also the sprayed cooling water cannot be concentrated on the drill rod, resulting in low utilization of the cooling water, poor cooling effect of the drill rod, and reduced service life of the drill rod. Therefore, improvements are now made to the engine tappet drilling device. Utility Model Content

[0004] The utility model aims to provide an engine tappet drilling device to solve the problem that the cooling water utilization rate of the existing engine tappet drilling device is low when in use, resulting in low cooling efficiency of the drill rod.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technologies: an engine tappet drilling device, comprising:

[0006] A drilling mechanism, the drilling mechanism comprising a bracket, a motor module is arranged on the upper side of the bracket, and a drill rod is fixedly connected to the output end of the motor module;

[0007] A telescopic sleeve mechanism, the telescopic sleeve mechanism comprising a bellows, the upper end of the bellows is provided with a connecting pipe, the bellows is arranged below the bracket, and the bellows and the connecting pipe are located outside the drill pipe;

[0008] The cooling mechanism comprises an annular tube located inside the connecting tube, the annular tube coaxially surrounds the outside of the drill rod, and the annular tube is provided with three nozzles facing the drill rod.

[0009] As a further description of the above technical solution: a mounting assembly is provided at the upper end of the connecting pipe, and the mounting assembly includes an axial sleeve fixedly connected to the lower side of the bracket, the axial sleeve is located outside the drill rod, and a top plate is sleeved at the lower end of the axial sleeve, and a pair of through holes are opened on the top plate.

[0010] As a further description of the above technical solution: a bottom plate assembly is fixedly arranged at the lower end of the bellows, so the bottom plate assembly includes an annular plate with the same diameter as the top plate, and a pair of guide rods are fixedly connected to the annular plate, so a limit block is arranged at the upper end of the guide rod;

[0011] The guide rod passes through the top plate through a through hole and is slidably connected to the top plate, and the diameter of the limit block is greater than the diameter of the through hole.

[0012] As a further description of the above technical solution: the annular plate is arranged at a position lower than the lower end of the drill rod through a bellows, and the bellows and the connecting pipe are arranged coaxially with the drill rod.

[0013] As a further description of the above technical solution: a connecting hose is arranged on the annular tube through the lens, and the connecting hose passes through the connecting tube and extends to the outside of the connecting tube.

[0014] As a further description of the above technical solution: the three nozzles are distributed on the annular tube at equal intervals, and the nozzles are inclined toward the lower end of the drill pipe.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] By arranging a telescopic sleeve mechanism outside the drill rod of the drilling device, the drilling device can be extended and retracted along with the drill rod when drilling, so that the drilling working environment forms a relatively closed environment, avoiding the splashing of drilling waste chips, and three nozzles are arranged inside the telescopic sleeve mechanism through an annular tube. When the nozzles spray cooling water on the drill rod, the cooling water can always be located inside the telescopic sleeve mechanism, avoiding the waste of cooling water caused by splashing. At the same time, the narrow space enables the cooling water to fully act on the drill rod, thereby improving the utilization rate of the cooling water and effectively increasing the service life of the drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure schematic diagram provided according to the embodiment of the utility model is shown;

[0018] Figure 2 A schematic structural diagram of a drilling mechanism provided according to an embodiment of the utility model is shown;

[0019] Figure 3 A partial cutaway schematic diagram according to an embodiment of the utility model is shown;

[0020] Figure 4 A schematic structural diagram of a telescopic sleeve mechanism provided according to an embodiment of the utility model is shown;

[0021] Figure 5 A schematic diagram of the structure of a cooling mechanism provided according to an embodiment of the utility model is shown;

[0022] Figure 6 A schematic diagram of the structure of the installation assembly provided according to an embodiment of the utility model is shown;

[0023] Figure 7 A structural schematic diagram of a base plate assembly provided according to an embodiment of the utility model is shown.

[0024] Legend:

[0025] 1. Drilling mechanism; 11. Bracket; 12. Motor module; 13. Drill rod; 2. Telescopic sleeve mechanism; 21. Bellows; 22. Connecting pipe; 23. Bottom plate assembly; 231. Ring plate; 232. Guide rod; 233. Limit block; 24. Mounting assembly; 241. Shaft sleeve; 242. Top plate; 243. Through hole; 3. Cooling mechanism; 31. Ring pipe; 32. Nozzle; 33. Connector; 34. Connecting hose. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-Figure 7 The present embodiment provides an engine tappet drilling device, comprising a drilling mechanism 1, the drilling mechanism 1 comprising a bracket 11, a motor module 12 is arranged on the upper side of the bracket 11, and a drill rod 13 is fixedly connected to the output end of the motor module 12, a telescopic sleeve mechanism 2 is arranged outside the drill rod 13, the telescopic sleeve mechanism 2 comprises a bellows 21, a connecting pipe 22 is arranged at the upper end of the bellows 21, the bellows 21 is arranged below the bracket 11, and the bellows 21 and the connecting pipe 22 are located outside the drill rod 13, a cooling mechanism 3 is arranged inside the telescopic sleeve mechanism 2 at a position outside the drill rod 13, the cooling mechanism 3 comprises an annular tube 31 located inside the connecting pipe 22, the annular tube 31 coaxially surrounds the outside of the drill rod 13, and three nozzles 32 facing the drill rod 13 are arranged on the annular tube 31.

[0028] When drilling a hole in an engine tappet, the drilling mechanism 1 is installed on a lifting frame for drilling through a bracket 11, and the motor module 12 on the bracket 11 drives the drill rod 13 to rotate. Before the drill rod 13 contacts the tappet, the bottom of the bellows 21 contacts the tappet first. As the drill rod 13 descends, the bellows 21 squeezes and contracts, so that a relatively closed space is formed at the drilling position of the drill rod 13, and drilling waste is prevented from splashing during drilling. When the drill rod 13 is cooled, cooling water is sent to the annular tube 31 in the connecting pipe 22, and the annular tube 31 coaxially surrounds the outside of the drill rod 13. Three nozzles 32 facing the drill rod 13 are arranged on the annular tube 31. The cooling water is sprayed toward the drill rod 13 through the nozzles 32, which can ensure that the cooling water can be fully sprayed on the drill rod 13. Moreover, the annular tube 31 and the nozzles 32 are in the connecting pipe 22 and the bellows 21, which can prevent the cooling water from splashing, so that the cooling water can fully act on the drill rod, thereby improving the utilization rate of the cooling water.

[0029] Specifically, refer to Figure 6 A mounting assembly 24 is provided at the upper end of the connecting pipe 22, and the mounting assembly 24 includes a shaft sleeve 241 fixedly connected to the lower side of the bracket 11, the shaft sleeve 241 is located outside the drill rod 13, and a top plate 242 is sleeved at the lower end of the shaft sleeve 241, and a pair of through holes 243 are opened on the top plate 242. The shaft sleeve 241 is sleeved on the outside of the drill rod 13, and the top plate 242 is installed on the lower side of the bracket 11 without affecting the rotation of the drill rod 13, so that the bellows 21 and the connecting pipe 22 can be installed through the top plate 242.

[0030] Specifically, refer to Figure 7 A bottom plate assembly 23 is fixedly provided at the lower end of the bellows 21, so the bottom plate assembly 23 includes an annular plate 231 with the same diameter as the top plate 242, and a pair of guide rods 232 are fixedly connected to the annular plate 231, so a limit block 233 is provided at the upper end of the guide rod 232, and the guide rod 232 passes through the top plate 242 through the through hole 243 and is slidably connected to the top plate 242, and the diameter of the limit block 233 is larger than the diameter of the through hole 243, and the annular plate 231 is used to increase the contact area between the bellows 21 and the tappet, so that when the drilling mechanism 1 is drilling, the bellows 21 can be fully contacted with the tappet, thereby ensuring that the bellows 21 can be squeezed to achieve the contraction of the bellows 21 during drilling, and the guide rod 232 is used for guiding the bellows 21, and when the bellows 21 is contracted, it can ensure that the bellows 21 can perform vertical telescopic movement to prevent the bellows 21 from bending and contacting the drill rod 13.

[0031] Among them, the annular plate 231 is arranged at a position lower than the lower end of the drill rod 13 through the bellows 21, and the bellows 21 and the connecting tube 22 are coaxially arranged with the drill rod 13. The annular plate 231 below the lower end of the drill rod 13 can ensure that the bellows 21 first contacts the push rod when drilling, thereby forming a relatively closed space at the processing position to avoid splashing of processing waste. The coaxially arranged bellows 21 and the connecting tube 22 can avoid damage to the bellows 21 and the connecting tube 22 caused by contact with the drill rod 13 when the drill rod 13 is in use.

[0032] Among them, a connecting hose 34 is provided on the annular tube 31 through the lens 33, and the connecting hose 34 passes through the connecting tube 22 and extends to the outside of the connecting tube 22. The cooling water delivery mechanism is connected through the connecting hose 34, so that the cooling water can be delivered to the annular tube 31 and sprayed on the drill rod 13 through the nozzle 32.

[0033] Among them, the three nozzles 32 are evenly spaced on the annular tube 31, and the nozzles 32 are inclined toward the lower end of the drill rod 13. The three evenly spaced nozzles 32 can make the cooling water contact the drill rod 13 with the maximum area, so that the cooling water can fully act on the drill rod 13, thereby improving the utilization rate of the cooling water.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An engine tappet drilling device, characterized in that: include: A drilling mechanism (1), the drilling mechanism (1) comprising a bracket (11), a motor module (12) being arranged on the upper side of the bracket (11), and a drill rod (13) being fixedly connected to the output end of the motor module (12); A telescopic sleeve mechanism (2), the telescopic sleeve mechanism (2) comprising a bellows (21), a connecting pipe (22) being arranged at the upper end of the bellows (21), the bellows (21) being arranged below the bracket (11), and the bellows (21) and the connecting pipe (22) being located outside the drill rod (13); A cooling mechanism (3), the cooling mechanism (3) comprising an annular tube (31) located inside the connecting tube (22), the annular tube (31) coaxially surrounding the outside of the drill rod (13), and three nozzles (32) facing the drill rod (13) are arranged on the annular tube (31).

2. An engine tappet drilling device according to claim 1, characterized in that: The upper end of the connecting pipe (22) is provided with a mounting assembly (24), and the mounting assembly (24) comprises a shaft sleeve (241) fixedly connected to the lower side of the bracket (11), the shaft sleeve (241) is located outside the drill rod (13), and the lower end of the shaft sleeve (241) is sleeved with a top plate (242), and a pair of through holes (243) are opened on the top plate (242).

3. An engine tappet drilling device according to claim 2, characterized in that: A bottom plate assembly (23) is fixedly provided at the lower end of the bellows (21), so the bottom plate assembly (23) comprises an annular plate (231) having the same diameter as the top plate (242), a pair of guide rods (232) are fixedly connected to the annular plate (231), so a limit block (233) is provided at the upper end of the guide rod (232); The guide rod (232) passes through the top plate (242) through the through hole (243) and is slidably connected to the top plate (242); the diameter of the limit block (233) is greater than the diameter of the through hole (243).

4. An engine tappet drilling device according to claim 3, characterized in that: The annular plate (231) is arranged at a position lower than the lower end of the drill rod (13) through the bellows (21), and the bellows (21) and the connecting pipe (22) are coaxially arranged with the drill rod (13).

5. The engine tappet drilling device according to claim 1, characterized in that: A connecting hose (34) is provided on the annular tube (31) through the lens (33), and the connecting hose (34) penetrates the connecting tube (22) and extends to the outside of the connecting tube (22).

6. The engine tappet drilling device according to claim 1, characterized in that: The three spray heads (32) are distributed on the annular tube (31) at equal intervals, and the spray heads (32) are arranged in an inclined manner toward the lower end of the drill rod (13).

Images