Centralized paint spraying device for coal mine drill bits

Abstract

The centralized paint spraying device for the coal mine drill bits comprises a vertical frame, a plurality of cross beams are evenly and horizontally erected on the vertical frame, a plurality of bearing assemblies used for loading the drill bits are evenly distributed on the cross beams in the length direction of the cross beams, and each bearing assembly comprises a fixing sleeve and a connecting shaft perpendicularly arranged in the fixing sleeve in a penetrating mode; a driving motor is arranged on the end side of the cross beam, a driving assembly connected with the driving motor is erected in the center of the cross beam, and the driving motor is in transmission connection with the connecting shaft through the driving assembly so as to drive the connecting shaft to synchronously rotate in the fixing sleeve at the same frequency. From the perspective of practicability and convenience of machining practice, the drill bit to be machined can rotate uniformly and synchronously, the paint spraying quality is guaranteed, synchronous paint spraying operation of batch drill bits can be achieved, the quality can be guaranteed, and the production efficiency can also be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine equipment, in particular to a centralized paint spraying device for a coal mine drill bit. Background Art

[0002] After the drill bits for underground mining and extraction in coal mines are processed by turning machines, they need to undergo the last process, namely painting, before being packaged in boxes to obtain the final product. Due to the small size of the drill bit and the convenience of painting, coupled with the high cost of investing in a dedicated automated painting production line, the common processing method for drill bit manufacturers in this field is manual painting. The main technical quality indicators that need to be considered in the manual painting process are the uniform rotation of the drill bit and the efficiency of batch painting. As far as the current process is concerned, the manual painting process currently has the following main problems:

[0003] First, the painting tooling is too simple and the actual use effect is very poor. For example, the roller-type painting workbench disclosed as early as 2010, with publication number CN201644357U, has a simple structure, the actual use effect cannot meet expectations, and the efficiency is low, and it has long been abandoned;

[0004] Second, the structure of the auxiliary tooling for painting is too complicated, and the number of paints that can be sprayed at a time is limited, so the production efficiency is too low. For example, the painting device for a PDC drill bit disclosed in Publication No. CN112517274A, and the painting setting for a mining drill bit disclosed in Publication No. CN215744268U, have too complicated structures. Although they can save a certain amount of manpower, the cost of the equipment itself is relatively high, and only one drill bit can be loaded at a time, so batch operations cannot be performed, the efficiency is too low, and they lack practicality in actual production. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to propose a centralized painting device for coal mine drill bits. From the perspective of practicality and convenience in processing practice, it can not only realize the uniform synchronous rotation of the drill bits to be processed and ensure the quality of painting, but also realize the synchronous painting operation of batches of drill bits, which can ensure both quality and production efficiency.

[0006] The technical solutions adopted by the utility model to solve the above problems are as follows:

[0007] The present application discloses a centralized painting device for coal mine drill bits, comprising a vertical frame, on which a plurality of horizontal beams are evenly and evenly arranged, and on the beams along their length direction, a plurality of bearing assemblies for loading drill bits are evenly arranged, and the bearing assembly comprises a fixed sleeve and a connecting shaft vertically inserted in the fixed sleeve, a driving motor is arranged on the end side of the beam, and a driving assembly connected to the driving motor is arranged in the center of the beam, and the driving motor is connected to the connecting shaft through the driving assembly to drive the connecting shaft to rotate synchronously and at the same frequency in the fixed sleeve.

[0008] As a preferred solution of the above technical solution, the driving assembly includes a transmission shaft and a plurality of main transmission teeth arranged on the transmission shaft, the transmission shaft is horizontally mounted at the center of the inner cavity of the crossbeam, the position and number of the main transmission teeth correspond to the position and number of the connecting shafts on the corresponding crossbeam, and after the bottom of the connecting shaft penetrates into the inner cavity of the crossbeam, it is connected to a slave transmission tooth meshing with the main transmission teeth.

[0009] As a preferred solution of the above technical solution, the fixing sleeve is vertically fixed on the crossbeam, a through hole is provided at the center of the fixing sleeve, and an opening communicating with the through hole and for the connecting shaft to pass through is provided on the crossbeam.

[0010] As a preferred solution of the above technical solution, the crossbeam is a circular tube, a triangular tube, a quadrangular tube or a polygonal tube.

[0011] As a preferred solution of the above technical solution, the stand includes tripods located at both ends, and the crossbeam is horizontally installed between the tripods at both ends.

[0012] As a preferred solution of the above technical solution, a pulley is provided at the bottom of the stand.

[0013] As a preferred solution of the above technical solution, a pushing rod is provided on one end of the stand.

[0014] As a preferred solution of the above technical solution, a limiting ring is sleeved on the connecting shaft, and the limiting ring is stuck on the top of the fixing sleeve so that the bottom end of the connecting shaft is just connected with the driving assembly.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] First, the overall structure of the present application is simple and can be obtained by welding and assembling existing materials in the drill bit production workshop. The cost of the equipment itself can be ignored and no additional equipment needs to be purchased, thereby reducing production costs.

[0017] Secondly, the present application adopts a structure in which a driving motor drives multiple connecting shafts to rotate synchronously, which can ensure that the drill bits of the same batch of paint spraying operations on the same beam always rotate synchronously, at the same frequency and at a uniform speed, which can ensure the paint spraying quality of each drill bit, and the difference in the paint spraying quality of different drill bits is reduced to a minimum, thereby improving the process quality of the finished drill bits;

[0018] Thirdly, the present application can load several drill bits at the same time for synchronous painting operations, and after the painting is completed, the drill bits can also be naturally dried on the equipment, and also have the function of a drying rack, which can ensure batch painting operations and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the transmission connection structure between the drive motor, the drive assembly and the bearing assembly.

[0021] Markings in the figure: 1, stand, 2, crossbeam, 3, fixed sleeve, 4, connecting shaft, 41, limit ring, 5, driving motor, 6, transmission shaft, 7, main transmission gear, 8, slave transmission gear, 9, tripod, 10, pulley, 11, push rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] As shown in the figure, the present embodiment discloses a centralized painting device for coal mine drill bits, including a stand 1, on which a plurality of beams 2 are evenly and horizontally mounted, the stand 1 includes tripods 9 located at both ends, the beams 2 are horizontally mounted between the tripods 9 at both ends, a plurality of bearing components for loading drill bits are evenly arranged on the beam 2 along its length direction, the bearing component includes a fixed sleeve 3 and a connecting shaft 4 vertically penetrated in the fixed sleeve 3, a driving motor 5 is arranged on the end side of the beam 2, a driving component connected to the driving motor 5 is arranged in the center of the beam 2, the driving motor 5 is transmission-connected to the connecting shaft 4 through the driving component, so as to drive the connecting shaft 4 to rotate synchronously and at the same frequency in the fixed sleeve 3.

[0024] In this embodiment, the driving assembly includes a transmission shaft 6 and a plurality of main transmission teeth 7 arranged on the transmission shaft 6. The transmission shaft 6 is horizontally mounted at the center of the inner cavity of the beam 2. The position and number of the main transmission teeth 7 correspond to the position and number of the connecting shaft 4 on the corresponding beam 2. After the bottom of the connecting shaft 4 penetrates into the inner cavity of the beam 2, it is connected with a slave transmission tooth 8 meshing with the main transmission tooth 7. A limiting ring 41 is sleeved on the connecting shaft 4, and the limiting ring 41 is stuck on the top of the fixing sleeve 3 so that the position of the bottom end of the connecting shaft 4 is just connected with the driving assembly.

[0025] In this embodiment, the fixing sleeve 3 is vertically fixed on the beam 2, a through hole is provided at the center of the fixing sleeve 3, an opening is provided on the beam 2 that is connected to the through hole and for the connecting shaft 4 to pass through, and the beam 2 is a triangular tube structure.

[0026] In this embodiment, a pulley 10 is disposed at the bottom of the stand 1 , and a push rod 11 is disposed at one end of the stand 1 , and the push rod 11 can be used to conveniently push the entire stand 1 to move.

[0027] In the working state, the outer diameter of the connecting shaft 4 is consistent with the inner diameter of the center hole of the drill bit. The connecting shaft 4 is coated with lubricating oil to facilitate the insertion of the tail of the drill bit. The length of the connecting shaft 4 located on the upper side of the fixing sleeve 3 is greater than the depth of the center hole of the drill bit. In this way, the drill bit can be inserted into the connecting shaft 4, and there is still a certain gap between the bottom of the tail end of the drill bit and the top of the fixing sleeve 3. On the one hand, it can facilitate the painting operation, and on the other hand, it does not hinder the rotation of the drill bit.

[0028] The rotary drive structure of the drill bit is mainly realized by the drive assembly, such as Figure 2 As shown, the driving motor at the end of the beam 2 is used to drive the transmission shaft 6 in its inner cavity to rotate at a uniform speed, and the main transmission teeth 7 sleeved on the transmission shaft 6 are just meshed with the slave transmission teeth 8 sleeved on the bottom end of the connecting shaft 4. The two transmission teeth form an L-shaped structure, which converts the horizontal rotation of the transmission shaft 6 into the vertical rotation of the connecting shaft 4, and the single transmission shaft 6 synchronously drives several connecting shafts 4 thereon to rotate synchronously, and the rotation structure has excellent stability.

[0029] When in use, a single beam 2 is generally used as a painting unit. After one beam 2 is fully loaded with drill bits, it is painted uniformly and centrally, and then the painting operation on another beam 2 is carried out, and at the same time, the drill bits that have been painted on the previous beam 2 can be dried synchronously. After all the drill bits on a stand are painted, they are pushed to the warehouse for drying, and at the same time, the repeated painting operation on another stand is carried out.

[0030] The above 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 substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A centralized painting device for a coal mine drill bit, comprising a stand (1), characterized in that: A plurality of cross beams (2) are evenly and horizontally arranged on the vertical frame (1); a plurality of bearing components for loading drill bits are evenly arranged on the cross beam (2) along its length direction; the bearing component comprises a fixed sleeve (3) and a connecting shaft (4) vertically inserted into the fixed sleeve (3); a driving motor (5) is arranged at the end side of the cross beam (2); a driving component connected to the driving motor (5) is arranged at the center of the cross beam (2); the driving motor (5) is transmission-connected to the connecting shaft (4) through the driving component, so as to drive the connecting shaft (4) to rotate synchronously and at the same frequency in the fixed sleeve (3).

2. The centralized painting device for coal mine drill bits according to claim 1, characterized in that: The driving assembly comprises a transmission shaft (6) and a plurality of main transmission teeth (7) arranged on the transmission shaft (6); the transmission shaft (6) is horizontally mounted at the center of the inner cavity of the crossbeam (2); the position and number of the main transmission teeth (7) correspond to the position and number of the connecting shaft (4) on the corresponding crossbeam (2); and the bottom of the connecting shaft (4) penetrates into the inner cavity of the crossbeam (2) and is connected to a slave transmission tooth (8) meshing with the main transmission tooth (7).

3. The centralized painting device for coal mine drill bits according to claim 1, characterized in that: The fixing sleeve (3) is vertically fixed on the crossbeam (2), a through hole is provided at the center of the fixing sleeve (3), and an opening is provided on the crossbeam (2) that is connected to the through hole and is used for the connecting shaft (4) to pass through.

4. The centralized painting device for coal mine drill bits according to claim 1, characterized in that: The crossbeam (2) is a circular tube, a triangular tube, a quadrangular tube or a polygonal tube.

5. The centralized painting device for coal mine drill bits according to claim 1, characterized in that: The stand (1) comprises tripods (9) located at two ends, and the crossbeam (2) is horizontally erected between the tripods (9) at the two ends.

6. The centralized painting device for coal mine drill bits according to claim 1, characterized in that: A pulley (10) is provided at the bottom of the stand (1).

7. The centralized painting device for coal mine drill bits according to claim 1, characterized in that: A pushing rod (11) is provided on one end side of the stand (1).

8. The centralized painting device for coal mine drill bits according to claim 1, characterized in that: A limiting ring (41) is sleeved on the connecting shaft (4), and the limiting ring (41) is stuck on the top end of the fixing sleeve (3) so that the bottom end of the connecting shaft (4) is just connected with the driving component.

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