Sleeper drill sucking device

Abstract

The sleeper suction drilling device comprises a shell, a main shaft, an air suction pipe and a driver, the shell forms a closed lubricating chamber, the lubricating chamber is used for being filled with lubricating grease, the main shaft is rotatably arranged on the shell, one end of the main shaft extends into the lubricating chamber, and the other end of the main shaft is used for being provided with a drill bit; the spindle is provided with a dust collection channel penetrating in the axial direction, the air suction pipe is arranged on the shell, one end of the air suction pipe is inserted into the dust collection channel in the axial direction, the air suction pipe is in clearance fit with the dust collection channel, the other end of the air suction pipe is used for being connected with a suction device, the driver is arranged outside the shell, and an output shaft of the driver extends into the lubricating chamber. The driver is in transmission connection with the spindle to drive the spindle to rotate. According to the sleeper suction drilling device, the lubricating grease serves as a lubricating medium, the negative pressure of the lubricating chamber, the viscosity of the lubricating grease and the negative pressure of the air suction pipe can form stress balance, and the sleeper suction drilling device is beneficial to improving the sealing effect between the air suction pipe and the hollow rotating shaft. The utility model relates to the field of bolt heavy anchoring.

Description

Technical Field

[0001] This application relates to the field of bolted anchorage, and in particular to a sleeper suction drill device. Background Technology

[0002] The anchor bolts of railway sleepers need to be replaced when they fail. In early related technologies, a vertical hollow drill bit was used to drill through the sulfur anchoring mortar around the bolt to separate the bolt from the sleeper. Since the bolt was anchored with sulfur, the sulfur dust generated during drilling would form a paste under the friction of the high-speed rotating hollow drill bit, which could easily cause the drill to seize up and get stuck.

[0003] To address this, some related technologies (such as Chinese Patent 202210078409.X) have designed a suction drill with a suction function. By suctioning the hollow drill bit during drilling, the generated sulfur dust can be discharged in a timely manner, reducing the risk of sulfur accumulating and forming a paste. This helps to increase the drill bit speed and improve the efficiency of sleeper operations.

[0004] However, during use, it was noted that due to excessively high rotation speed, the connection between the air suction pipe and the hollow shaft may experience sealing failure, causing lubricating oil to enter the air suction pipe. This can damage the air pump connected to the drill suction machine and also cause lubricating oil loss. The reliability of the drill suction solution needs to be improved. Utility Model Content

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a sleeper suction drill device, which helps to improve the sealing effect between the suction pipe and the hollow rotating shaft.

[0006] The sleeper suction drilling device provided in this application includes a housing, a main shaft, a suction pipe, and a driver. The housing forms a closed lubrication chamber for filling with grease. The main shaft is rotatably mounted on the housing, with one end extending into the lubrication chamber and the other end for mounting a drill bit. The main shaft has an axially extending dust suction channel. The suction pipe is mounted on the housing, with one end inserted into the dust suction channel along the axial direction. The suction pipe and the dust suction channel are clearance-fitted. The other end of the suction pipe is connected to a suction device. The driver is located outside the housing, with its output shaft extending into the lubrication chamber. The driver and the main shaft are connected in a driving connection to drive the main shaft to rotate.

[0007] The sleeper suction drill device provided in this application has at least the following technical effects: This application uses a relatively weak fluid grease as a lubricating medium. By inserting the suction pipe into the dust suction channel of the main shaft, a narrow and long sealed channel is formed between the suction pipe and the main shaft. When negative pressure suction is used, the grease will be sucked into the sealed channel to lubricate the main shaft. However, since the lubrication chamber is in a closed state, as the grease flows, the lubrication chamber will also generate negative pressure. The negative pressure of the lubrication chamber and the viscosity of the grease can form a force balance with the negative pressure of the suction pipe, thereby preventing the grease from flowing out of the sealed channel. The sleeper suction drill device helps to improve the sealing effect between the suction pipe and the hollow shaft.

[0008] According to some embodiments of this application, the length of the suction pipe inserted into the dust suction channel is greater than 100 mm.

[0009] According to some embodiments of this application, the output shaft and the main shaft are arranged parallel to each other, the output shaft is located on one side of the housing, the main shaft is located on the other side of the housing, and the suction pipe extends radially outward between the output shaft and the main shaft to pass through the housing.

[0010] According to some embodiments of this application, the output shaft and the main shaft are connected by a gear mechanism.

[0011] According to some embodiments of this application, the sleeper suction drill device includes a drive shaft, a first gear, a second gear, a third gear, and a fourth gear. The drive shaft is disposed in the lubrication chamber, the second gear and the third gear are disposed on the drive shaft, the first gear is disposed on the output shaft, the first gear and the second gear mesh, and the fourth gear is disposed on the main shaft, the fourth gear and the third gear mesh.

[0012] According to some embodiments of this application, the second gear has a greater number of teeth than the first gear, and the fourth gear has a greater number of teeth than the third gear.

[0013] According to some embodiments of this application, the first gear, the second gear, the third gear, and the fourth gear are helical gears.

[0014] According to some embodiments of this application, the output shaft and the main shaft are coaxially arranged.

[0015] According to some embodiments of this application, the housing includes an upper housing and a lower housing, the upper housing and the lower housing surrounding to form the lubrication chamber, and the suction pipe extends from between the upper housing and the lower housing.

[0016] According to some embodiments of this application, the sleeper suction drill device includes a sealing gasket, which is sleeved on the suction pipe and is used to seal the gap between the suction pipe and the housing. Attached Figure Description

[0017] The accompanying drawings are used to provide a further understanding of the technical solutions disclosed in this application and form part of the specification. They are used together with the embodiments disclosed in this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions disclosed in this application.

[0018] Figure 1 This is a schematic diagram of the sleeper suction drill device according to an embodiment of this application.

[0019] Figure label:

[0020] Lubrication chamber 110, upper housing 120, lower housing 130;

[0021] Spindle 210, drill bit 220, connecting sleeve 230;

[0022] Inhalation tube 310, sealing gasket 320;

[0023] Driver 410, drive shaft 420, first gear 430, second gear 440, third gear 450, fourth gear 460. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Reference Figure 1 The sleeper suction drill device provided in this application includes a housing, a main shaft 210, a suction pipe 310, and a driver 410. The housing forms a closed lubrication chamber 110, which is used to fill grease (not shown in the figure). The main shaft 210 is rotatably mounted on the housing. One end of the main shaft 210 extends into the lubrication chamber 110, and the other end of the main shaft 210 is used to mount a drill bit 220. The main shaft 210 has an axially penetrating dust suction channel. The suction pipe 310 is mounted on the housing. One end of the suction pipe 310 is inserted axially into the dust suction channel. The suction pipe 310 and the dust suction channel are clearance-fitted. The other end of the suction pipe 310 is used to connect to a suction device. The driver 410 is mounted outside the housing. The output shaft of the driver 410 extends into the lubrication chamber 110. The driver 410 and the main shaft 210 are connected in a transmission connection to drive the main shaft 210 to rotate.

[0030] According to the sleeper suction drill device provided in this application, a relatively weak fluid grease is used as the lubricating medium. By inserting the suction pipe 310 into the dust suction channel of the main shaft 210, a narrow and long sealed channel is formed between the suction pipe 310 and the main shaft 210. When negative pressure suction is used, the grease will be sucked into the sealed channel to lubricate the main shaft 210. However, since the lubrication chamber 110 is in a closed state, as the grease flows, the lubrication chamber 110 will also generate negative pressure. The negative pressure of the lubrication chamber 110 and the viscosity of the grease can form a force balance with the negative pressure of the suction pipe 310, thereby preventing the grease from flowing out of the sealed channel. The sleeper suction drill device helps to improve the sealing effect between the suction pipe 310 and the hollow main shaft 210.

[0031] Compared to using lubricating oil as a lubricating medium, grease has a higher viscosity and is easier to achieve the force balance required by this application. Compared to using bearings instead of a lubricating medium, this application has a better sealing effect, and the clearance fit allows for a certain degree of radial floating between the spindle 210 and the suction pipe 310, resulting in better stability and reliability during use.

[0032] It is understandable that the tolerance of the clearance fit cannot be too large, otherwise the force balance effect required by this application cannot be produced. Generally speaking, the single-sided clearance between the spindle 210 and the suction pipe 310 should be less than or equal to 0.5mm.

[0033] In addition, if the suction pipe 310 is inserted to an insufficient depth, some of the grease will be sucked out of the sealed channel before the force balance is achieved, resulting in grease loss. Therefore, in some embodiments, the length of the suction pipe 310 inserted into the dust suction channel is greater than 100 mm.

[0034] Obviously, in order to meet the portability requirements on site, the size of the sleeper suction drill device cannot be too large. Correspondingly, the space of the lubrication chamber 110 is limited, and the positions of the output shaft, main shaft 210 and suction pipe 310 need to be arranged as compactly as possible.

[0035] Optionally, in some embodiments, the output shaft and the main shaft 210 are arranged in parallel and spaced apart, with the output shaft located on one side of the housing and the main shaft 210 located on the other side of the housing. The suction pipe 310 extends radially outward between the output shaft and the main shaft 210 to pass through the housing.

[0036] For example, refer to Figure 1 In the illustrated embodiment, the output shaft can be coaxially arranged with the main shaft 210. In this case, since it is necessary to avoid the intake pipe 310, the output shaft cannot be directly connected to the main shaft 210 via a coupling, but needs to be indirectly connected to the main shaft 210 via a transmission mechanism.

[0037] For example, in some embodiments, the output shaft and the main shaft 210 are connected by a gear mechanism. The gear mechanism is suitable for heavy-duty conditions, so that even if the sulfur dust is not completely sucked out and forms a certain paste in the borehole, the sleeper suction drill device can continue to perform suction drill operations normally, making the use of the sleeper suction drill device smoother.

[0038] Reference Figure 1In some embodiments, the sleeper suction drill device includes a drive shaft 420, a first gear 430, a second gear 440, a third gear 450, and a fourth gear 460. The drive shaft 420 is disposed in the lubrication chamber 110. The second gear 440 and the third gear 450 are disposed on the drive shaft 420. The first gear 430 is disposed on the output shaft and meshes with the second gear 440. The fourth gear 460 is disposed on the main shaft 210 and meshes with the third gear 450.

[0039] At this point, in order to improve load capacity, the number of teeth of the second gear 440 can be greater than that of the first gear 430, and the number of teeth of the fourth gear 460 can be greater than that of the third gear 450. On the other hand, the first gear 430, the second gear 440, the third gear 450, and the fourth gear 460 can all be helical gears.

[0040] It should be noted that this application only illustrates one meshing design and transmission ratio selection of the gear mechanism. In other cases, other designs may be adopted depending on the space of the lubrication chamber 110 and the needs of the on-site working conditions. Furthermore, the transmission method of this application is not limited to the gear mechanism, and will not be elaborated here.

[0041] Optionally, to facilitate maintenance of the internal structure of the lubrication chamber 110, the housing is designed to be removable. In some embodiments, the housing includes an upper housing 120 and a lower housing 130, which surround to form the lubrication chamber 110, and an air intake pipe 310 extends from between the upper housing 120 and the lower housing 130.

[0042] This design allows the suction tube 310 to be naturally pressed and fixed when the housing is closed, and the suction tube 310 to be naturally released when the housing is opened, facilitating the installation and removal of the suction tube 310. Meanwhile, referring to... Figure 1 The driver 410 can be installed in the upper housing 120, while the spindle 210 can be installed in the lower housing 130. This way, after opening the housing, the driver 410 and the spindle 210 can be easily separated for subsequent maintenance.

[0043] However, at this point, seams are formed between the suction pipe 310 and the upper housing 120, between the suction pipe 310 and the lower housing 130, and between the upper housing 120 and the lower housing 130, which places higher demands on the sealing.

[0044] Optionally, the sleeper suction drill device includes a sealing gasket 320, which is sleeved on the suction pipe 310. The sealing gasket 320 is used to seal the gap between the suction pipe 310 and the housing. For example, the suction pipe 310 has a pagoda-shaped end. When the suction device 310 is connected to the suction pipe via a pipe, the connector at the end of the pipe is sleeved over the suction pipe 310. The connector also presses the sealing gasket 320 against the surface of the housing, thus simultaneously achieving a sealing effect and eliminating the need for an additional clamping structure.

[0045] Of course, in addition to the pagoda head, the suction pipe 310 can also be configured with an external thread connection, etc., to ensure that the connector is fitted outside the suction pipe 310, thereby achieving the dual purpose of pressing the sealing gasket 320. This application does not limit this.

[0046] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order shown in the operation diagrams. For example, depending on the functions / operations involved, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of this application are provided by way of example to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and sub-operations described as part of a larger operation are executed independently.

[0047] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A sleeper suction drill device, characterized in that, include: A housing that forms a closed lubrication chamber for filling with grease; The spindle is rotatably mounted on the housing, one end of the spindle extends into the lubrication chamber, the other end of the spindle is used to mount the drill bit, and the spindle has an axially penetrating dust suction channel. The suction pipe is disposed on the housing. One end of the suction pipe is inserted into the dust suction channel along the axial direction. The suction pipe and the dust suction channel are fitted with a clearance. The other end of the suction pipe is used to connect to a suction device. A driver is disposed outside the housing, the output shaft of the driver extends into the lubrication chamber, and the driver is drively connected to the main shaft to drive the main shaft to rotate.

2. The sleeper suction drill device according to claim 1, characterized in that, The length of the suction pipe inserted into the dust suction channel is greater than 100mm.

3. The sleeper suction drill device according to claim 1, characterized in that, The output shaft and the main shaft are arranged in parallel and spaced apart. The output shaft is located on one side of the housing, and the main shaft is located on the other side of the housing. The suction pipe extends radially outward between the output shaft and the main shaft to pass through the housing.

4. The sleeper suction drill device according to claim 3, characterized in that, The output shaft and the main shaft are connected by a gear mechanism.

5. The sleeper suction drill device according to claim 4, characterized in that, The sleeper suction drill device includes a drive shaft, a first gear, a second gear, a third gear, and a fourth gear. The drive shaft is disposed in the lubrication chamber. The second gear and the third gear are disposed on the drive shaft. The first gear is disposed on the output shaft and meshes with the second gear. The fourth gear is disposed on the main shaft and meshes with the third gear.

6. The sleeper suction drill device according to claim 5, characterized in that, The second gear has more teeth than the first gear, and the fourth gear has more teeth than the third gear.

7. The sleeper suction drill device according to claim 5, characterized in that, The first gear, the second gear, the third gear, and the fourth gear are helical gears.

8. The sleeper suction drill device according to claim 3, characterized in that, The output shaft and the main shaft are coaxially arranged.

9. The sleeper suction drill device according to claim 1, characterized in that, The housing includes an upper housing and a lower housing, which surround and form the lubrication chamber, and the suction pipe extends from between the upper housing and the lower housing.

10. The sleeper suction drill device according to claim 9, characterized in that, The sleeper suction drill device includes a sealing gasket, which is sleeved on the air suction pipe and is used to seal the gap between the air suction pipe and the housing.

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