A top plate drilling mechanism of a sampling robot

Abstract

The utility model provides a kind of top plate drilling mechanism of sampling robot, including driving component and the drilling part of driving component transmission connection;The drilling part includes drilling rod and the drilling head being set at the top of the drilling rod, the drilling rod connects driving component, the drilling rod is equipped with spiral blade, the drilling head is conical structure, the drilling head bottom covers spiral blade.The utility model has following beneficial effects: through the drilling head of conical structure cooperation with the drilling rod with spiral blade, it solves the technical problem that the existing top plate drilling mechanism is easy to jam big chunk of debris.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and in particular to a top plate drilling mechanism for a sampling robot. Background Technology

[0002] In underground engineering projects such as coal mines and tunnels, sampling and analyzing the roof strata is a crucial step in assessing roof stability and surrounding rock quality. Roof drilling and sampling robots are automated devices used to perform such high-altitude, high-risk tasks. Their core actuator is the drilling mechanism, which typically consists of a connecting rod, drill bit, drive motor, and sample collection device.

[0003] In existing technologies, a typical roof drilling mechanism usually includes a rotary drive unit connected to a drill bit via a connecting rod. This drill bit is typically a diamond or carbide drill bit, with a chip-receiving groove on its end face for accommodating the sample and a chip-removing groove on its side. During drilling, the drill bit breaks up the roof strata, and the resulting rock cuttings and smaller sample particles enter the chip-removing groove under the centrifugal force of the rotating drill rod. They are then discharged to a collection chamber at the rear via auxiliary methods such as negative pressure or fluid flow.

[0004] In actual use, the aforementioned top plate drilling mechanism will inevitably produce large chips during drilling because the material being drilled is complex. These chips are prone to getting stuck in the chip removal groove during the discharge process, which increases the stress in this area and can lead to drill bit breakage in severe cases. Of course, breakage will not occur in most cases, but it will still affect the service life of the drill bit. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a top plate drilling mechanism for a sampling robot, which solves the technical problem that existing top plate drilling mechanisms are prone to getting stuck with large pieces of debris.

[0006] A top plate drilling mechanism for a sampling robot according to an embodiment of the present invention includes a driving component and a drilling part that is transmissionally connected to the driving component. The drilling section includes a drilling rod and a drilling head disposed on the top of the drilling rod. The drilling rod is connected to a drive component. The drilling rod is provided with helical blades. The drilling head has a conical structure and the bottom of the drilling head covers the helical blades.

[0007] The technical principle of this utility model is as follows: when in use, the drill bit drills the rock layer, causing the rock layer to break into small or large pieces of rock. Then these rocks enter between the spiral blades and move along the rotating blades until they are removed from the drilled part. Finally, the collection mechanism that works in conjunction with the top plate drilling mechanism sucks the rocks away.

[0008] Because the helical blades can be spaced further apart, the rock can be discharged more freely, and the conical drill bit can easily drill into the rock formation while avoiding contact between the helical blades and the rock formation.

[0009] Compared with the prior art, this utility model has the following advantages: by using a drill bit with a conical structure and a drill rod with helical blades, it solves the technical problem that existing top plate drilling mechanisms are prone to getting stuck with large pieces of debris.

[0010] Furthermore, the drill bit includes at least three layers of blade structure, each layer of the blade structure includes at least three cutting blades, the edges of the cutting blades are provided with sharp teeth, and there is a gap between the cutting blades in the same layer.

[0011] This spacing design also prevents rocks from getting stuck, thus avoiding excessive stress on the drill bit in certain areas.

[0012] Furthermore, the gaps between different layers are aligned along the axial direction of the drill rod.

[0013] Furthermore, the drill bit also includes a U-shaped cutting head, the bottom of which is provided with a connecting shaft, and the cutting blades are all mounted on the connecting shaft, the bottom of which is connected to the drill rod.

[0014] Furthermore, the gaps between different layers are aligned along the axial direction of the drill rod.

[0015] Furthermore, the drill bit also includes a U-shaped cutting head, the bottom of which is provided with a connecting shaft, and the cutting blades are all mounted on the connecting shaft, the bottom of which is connected to the drill rod.

[0016] Furthermore, the driving component includes a hydraulic motor and a transmission spindle that is driven by the output shaft of the hydraulic motor, and the transmission spindle is connected to the drill rod.

[0017] Furthermore, the hydraulic motor is enclosed in a housing, and the transmission spindle is provided with a bearing seat, which is mounted on the housing.

[0018] Furthermore, the bearing housing is provided with a stepped hole, the transmission spindle is located in the large end of the stepped hole, the small end of the stepped hole faces the hydraulic motor, and the transmission spindle is provided with connecting protrusions at both ends. One end of the connecting protrusion passes through the small end of the stepped hole and connects to the hydraulic motor.

[0019] Furthermore, a pressure cap is provided at the large end of the stepped hole, and a through hole is provided in the center of the pressure cap. The connecting protrusion at the other end passes through the through hole and connects to the drill rod.

[0020] Furthermore, two thrust bearings are provided inside the large end of the stepped hole. One thrust bearing rests between one end face of the transmission main shaft and the stepped surface of the stepped hole, and the other thrust bearing rests between the other end face of the transmission main shaft and the pressure cap.

[0021] Furthermore, a connecting plate is connected to the bottom of the drill rod, the connecting plate covers the through hole, the connecting plate has a mating hole in the center, a connecting protrusion is inserted into the mating hole, and the connecting plate is connected to the transmission spindle with screws.

[0022] A connecting plate is installed to prevent rock debris from entering the bearing housing and damaging the drive shaft. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the top plate drilling mechanism in Embodiment 1 of this utility model.

[0024] Figure 2 This is a schematic diagram of the drill head structure of Embodiment 1 of this utility model.

[0025] Figure 3 This is a cross-sectional view of the drill head of Embodiment 1 of this utility model.

[0026] Figure 4 This is a schematic diagram of the pointed tooth structure of Embodiment 1 of this utility model.

[0027] Figure 5 This is a schematic diagram of the drive component structure in Embodiment 2 of this utility model.

[0028] In the above figures: 1. Drive component; 11. Hydraulic motor; 12. Transmission spindle; 121. Connecting protrusion; 13. Housing; 14. Bearing seat; 141. Stepped hole; 15. Pressure cap; 151. Through hole; 16. Connecting disc; 161. Mating hole; 17. Thrust bearing; 18. Deep groove ball bearing; 2. Drill rod; 21. Helical blade; 3. Drill head; 31. Cutting disc; 311. Pointed tooth; 32. Clearance; 33. U-shaped cutting head; 34. Connecting shaft. Detailed Implementation

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example 1 like Figure 1-2 The sampling robot shown has a top plate drilling mechanism, including a drive component 1 and a drilling part connected to the drive component 1. The drilling part specifically includes a drill rod 2 and a drill head 3 set on the top of the drill rod 2. The drill rod 2 is connected to the drive component 1. A spiral blade 21 is welded to the outside of the drill rod 2. The drill head 3 has a conical structure. The bottom of the drill head 3 covers the spiral blade 21 to ensure that the rock layer will not damage the spiral blade 21 during drilling.

[0031] like Figure 2-4 As shown, the drill bit 3 includes at least three layers of blade structure, and each layer of blade structure includes at least three cutting blades 31. In this embodiment, a three-layer blade structure is used as an example, and each layer of blade structure has three cutting blades 31. The cutting blades 31 have sharp teeth 311 on their edges, and there are gaps 32 between the cutting blades 31 in the same layer. Specifically, the gaps 32 between different layers are aligned along the axial direction of the drill rod 2, so that the rock being cut can quickly fall into the spiral blades 21 and be quickly discharged to avoid blockage. The setting of sharp teeth 311 is also conducive to breaking the rock and forming more small rock particles, thus preventing the rock from getting stuck in the drill bit.

[0032] like Figure 3-4 As shown, the drill head 3 also includes a U-shaped cutting head 33. A connecting shaft 34 is fixed at the bottom of the U-shaped cutting head 33. All cutting blades 31 are mounted on the connecting shaft 34. The bottom of the connecting shaft 34 is connected to the drill rod 2, so that the drill rod 2 can drive all the components on the entire drill head 3 to rotate.

[0033] In this embodiment, the driving component 1 is a rotary motor, which can drive the drill rod 2 to rotate.

[0034] Example 2 like Figure 5 As shown, the difference between this embodiment and embodiment 1 is that the driving component 1 includes a hydraulic motor 11 and a transmission spindle 12 connected to the output shaft of the hydraulic motor 11, and the transmission spindle 12 is connected to the drill rod 2.

[0035] Specifically, the hydraulic motor 11 is enclosed by a housing 13, and the transmission main shaft 12 is provided with a bearing seat 14, which is mounted on the housing 13 with screws.

[0036] like Figure 5 As shown, the bearing housing 14 has a stepped hole 141, the transmission spindle 12 is located in the large end of the stepped hole 141, the small end of the stepped hole 141 faces the hydraulic motor 11, and the transmission spindle 12 has integrally formed connecting protrusions 121 at both ends. The connecting protrusion 121 at one end passes through the small end of the stepped hole 141 and is connected to the hydraulic motor 11 by a key.

[0037] A pressure cap 15 is fixed to the large end of the stepped hole 141 with screws. The pressure cap 15 has a through hole 151 in the center. The connecting protrusion 121 at the other end passes through the through hole 151 and is connected to the drill rod 2. Specifically, the bottom of the drill rod 2 is screwed to a connecting plate 16, which covers the through hole 151. The connecting plate 16 has a mating hole 161 in the center. The connecting protrusion 121 is inserted into the mating hole 161. The connecting plate 16 is screwed to the transmission spindle 12, so that the connecting protrusion 121 can drive the connecting plate 16 to rotate.

[0038] like Figure 5 As shown, two thrust bearings 17 are provided in the large end of the stepped hole 141. One thrust bearing 17 rests between one end face of the transmission main shaft 12 and the stepped surface of the stepped hole 141, and the other thrust bearing 17 rests between the other end face of the transmission main shaft 12 and the pressure cap 15 for radial limiting. At least two deep groove ball bearings 18 are provided between the cylindrical surface of the large end of the stepped hole 141 and the cylindrical surface of the transmission main shaft 12 for circumferential limiting.

[0039] In this embodiment, a conventional tapered drill bit can be used as the drilling section.

[0040] Both of the above embodiments require the top plate drilling mechanism to be installed on the sampling robot and to have a material discharge mechanism, such as a vacuum cleaner connected to the drill rod 2 near the drive component 1, to suck up and store the drilled rock.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A top plate drilling mechanism for a sampling robot, characterized in that: Includes a drive component and a drilling section that is drive-connected to the drive component; The drilling section includes a drill rod and a drill head disposed on the top of the drill rod. The drill rod is connected to a drive component. The drill rod is provided with helical blades. The drill head has a conical structure and the bottom of the drill head covers the helical blades. The drill bit includes at least three layers of blade structure, each layer of the blade structure includes at least three cutting blades, the cutting blades have sharp teeth on their edges, and there is a gap between the cutting blades in the same layer; The gaps between different layers are aligned along the axial direction of the drill rod.

2. The top plate drilling mechanism of a sampling robot as described in claim 1, characterized in that: The drill bit also includes a U-shaped cutting head, the bottom of which is provided with a connecting shaft, and the cutting blades are all mounted on the connecting shaft. The bottom of the connecting shaft is connected to the drill rod.

3. The top plate drilling mechanism of a sampling robot as described in claim 1, characterized in that: The driving component includes a hydraulic motor and a transmission spindle that is driven by the output shaft of the hydraulic motor, and the transmission spindle is connected to the drill rod.

4. The top plate drilling mechanism of a sampling robot as described in claim 3, characterized in that: The hydraulic motor is enclosed in a housing, and the transmission main shaft is provided with a bearing seat, which is mounted on the housing.

5. The top plate drilling mechanism of a sampling robot as described in claim 4, characterized in that: The bearing housing has a stepped hole, the transmission spindle is located in the large end of the stepped hole, the small end of the stepped hole faces the hydraulic motor, and the transmission spindle has connecting protrusions at both ends. One of the connecting protrusions passes through the small end of the stepped hole and connects to the hydraulic motor.

6. The top plate drilling mechanism of a sampling robot as described in claim 5, characterized in that: A pressure cap is provided at the large end of the stepped hole, and a through hole is provided in the center of the pressure cap. The connecting protrusion at the other end passes through the through hole and connects to the drill rod.

7. The top plate drilling mechanism of a sampling robot as described in claim 6, characterized in that: Two thrust bearings are provided inside the large end of the stepped hole. One thrust bearing is placed between one end face of the transmission main shaft and the stepped surface of the stepped hole, and the other thrust bearing is placed between the other end face of the transmission main shaft and the pressure cap.

8. The top plate drilling mechanism of a sampling robot as described in claim 6, characterized in that: The bottom of the drill rod is connected to a connecting plate, which covers the through hole. The center of the connecting plate is provided with a mating hole, into which a connecting protrusion is inserted. The connecting plate is connected to the transmission spindle with screws.

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