Tunnel surrounding rock sampling and drilling mechanism

Abstract

The utility model relates to the technical field of tunnel drilling, in particular to a tunnel surrounding rock sampling and drilling mechanism. The drilling device comprises a supporting frame, a top plate, a lifting motor, a guide limiting assembly and a drilling assembly, the top plate is installed at the top end of the supporting frame, the lifting motor is installed on the upper surface of the top plate, the guide limiting assembly is arranged in front of the supporting frame and under the top plate, the drilling assembly penetrates through the guide limiting assembly, and the upper end of the drilling assembly is connected with the lifting motor. And the lower end is drilled. By means of the double functions of the guide plate and the limiting frame in the guide limiting assembly, it is ensured that the drilling head always conducts drilling in the preset direction in the drilling process, the possibility of drilling deviation is reduced, and therefore the drilling precision is improved; and the stability of the equipment is enhanced through the arrangement of the bottom frame, the positioning cone, the reinforcing plate and other structures.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel drilling, in particular to a tunnel surrounding rock sampling drilling mechanism. Background Art

[0002] In tunnel engineering construction and research, obtaining accurate tunnel surrounding rock samples is crucial for evaluating tunnel stability, geological characteristics, etc. The conventional drilling equipment has many problems in the process of use. For example, the patent with publication number CN221006866U proposes a tunnel surrounding rock sampling drilling mechanism, which includes a mobile vehicle, a lifting device, a drilling machine, a telescopic tube, a vertical plate, a filter, a suction fan, a dustproof net, a limit block, a positioning block, a screening net, and a support ring. When the drilling machine is used to drill holes in the surrounding rock, the surrounding rock debris falls into the inside of the collection cover. The suction fan is started, and a negative pressure is generated inside the collection box. The collection box sucks the surrounding rock debris inside the collection cover into the collection box through the telescopic tube. The surrounding rock debris falls into the inside of the drawer and is blocked by the filter. The surrounding rock debris stays inside the drawer, which has the advantage of preventing the sample from being mixed with dust, thereby improving the surrounding rock sampling effect. By setting the dustproof net, the interior of the collection box can be dustproof, preventing external dust from entering the interior of the collection box, causing dust to fall on the surface of the suction fan, thereby improving the surface cleanliness of the suction fan. However, the following problems still exist in this patent:

[0003] The equipment lacks stability during drilling, making it prone to deviation due to vibration and uneven force, affecting sample quality and accuracy. Furthermore, the lack of effective guidance and position-limiting reinforcements makes the drill bit prone to shaking during drilling, and the drilling structure lacks good support stability during drilling. This not only reduces drilling efficiency but also may damage the equipment, increasing construction costs and time. Utility Model Content

[0004] The utility model provides a tunnel surrounding rock sampling drilling mechanism, which aims to improve drilling accuracy and enhance drilling stability.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a tunnel surrounding rock sampling drilling mechanism, including a support frame, a top plate, a lifting motor, a guide limit assembly and a drilling assembly, the top of the support frame is installed with a top plate, the upper surface of the top plate is installed with a lifting motor, and a guide limit assembly is provided in front of the support frame and directly below the top plate, and the drilling assembly passes through the guide limit assembly to perform drilling operations.

[0006] The support frame includes a horizontally arranged support plate, a vertical connecting plate is vertically arranged in the center of the support plate, a reinforcing rib plate is arranged at the connection between the vertical connecting plate and the horizontal support plate, and the top plate is vertically connected to the top of the vertical connecting plate.

[0007] A through hole is provided in the middle of the top plate, and the upper end of the drilling assembly passes through the through hole and is connected to the lifting motor.

[0008] The guide and limit assembly includes a limit structure and a guide structure, wherein the limit structure is connected above the guide structure;

[0009] The limiting structure includes a mounting rod, a positioning plate, a mounting bolt and a limiting frame; the guide structure includes a bottom frame, a positioning cone, a guide frame, a reinforcement plate and a guide plate; the bottom frame is a rectangular frame structure, and the four corners of the lower surface of the bottom frame are respectively connected to the positioning cones; the guide frame is a rectangular table structure, and the four supporting legs on the lower surface of the rectangular table are respectively vertically installed on the frame of the upper surface of the bottom frame, and the middle of the outer surfaces of the supporting legs on the left and right sides of the guide frame are respectively connected to the reinforcement plates; the guide plate has a hole in the center, and two groups of guide plates are arranged and connected in parallel to the supporting legs under the rectangular table of the guide frame; the upper surface of the guide frame has a hole in the center, and the limit frame is arranged on the hole; the mounting rod is vertically connected to the four corners of the upper surface of the guide frame, and the top of the mounting rod is connected to the positioning plate by mounting bolts; the positioning plate is arranged parallel to the upper surface of the guide frame; the positioning plate is centrally provided with a through hole, and the drilling assembly passes through the through hole and is limited by the limit frame, and is guided by the guide plate to reach the bottom of the tunnel surrounding rock sampling drilling mechanism.

[0010] The bottom frame is threadedly connected to the positioning cone.

[0011] The drilling assembly is detachably connected to the limiting frame.

[0012] The drilling assembly includes a transmission structure, a fixed structure and a drilling head, the transmission structure is connected above the fixed structure, and the drilling head is connected below the fixed structure; the transmission structure includes a transmission shaft, an input shaft and a lifting shaft; the fixed structure includes a fixed rod, a drilling frame, a positioning block and a positioning plate; the upper end of the transmission shaft is connected to the lifting motor, the lower end is connected to the input shaft, the bottom of the input shaft is connected to the lifting shaft, and the bottom of the lifting shaft is connected to the fixed rod; the drilling frame is installed along the circumferential outer wall of the fixed rod, the drilling frame is a three-pointed star structure, three positioning blocks are installed at the bottom, the positioning blocks are installed on the positioning plate, and the drilling head is installed on the lower surface of the positioning plate.

[0013] The input shaft is connected to the lifting shaft in a transmission manner; the lifting shaft is threadedly connected to the fixing rod; the fixing rod is detachably connected to the drilling frame; the drilling frame is threadedly connected to the positioning block; the positioning block is threadedly connected to the positioning plate; and the positioning plate is threadedly connected to the drilling head. Beneficial effects

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The utility model improves the drilling accuracy; through the dual functions of the guide plate and the limit frame, it ensures that the drilling head always moves in the predetermined direction during the drilling process, reduces the possibility of drilling deviation, thereby improving the drilling accuracy and making the surrounding rock samples obtained more representative.

[0016] 2. The utility model enhances the stability of the equipment; through the arrangement of structures such as the bottom frame, positioning cone and reinforcement plate, the entire mechanism can be stably fixed on the ground during the drilling process, withstand the reaction force and vibration generated during drilling, reduce equipment shaking, and extend the service life of the equipment.

[0017] 3. The utility model is easy to install and maintain; the various components of the utility model adopt threaded connection and detachable installation method, which is convenient for assembly and disassembly at the construction site. When a component fails, it can be quickly replaced and repaired, reducing maintenance costs and downtime.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the guide frame structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the limit frame structure of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the drilling frame of the present utility model.

[0024] In the figure: 1. Support frame; 2. Top plate; 3. Lifting motor; 4. Guide limit assembly; 401. Bottom frame; 402. Positioning cone; 403. Guide frame; 404. Reinforcement plate; 405. Mounting rod; 406. Positioning plate; 407. Mounting bolt; 408. Guide plate; 409. Limit frame; 410. Drive shaft; 411. Input shaft; 412. Lifting shaft; 413. Fixing rod; 414. Drilling frame; 415. Positioning block; 416. Positioning plate; 417. Drilling head. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0026] according to Figures 1-4 The tunnel surrounding rock sampling drilling mechanism shown includes a support frame 1, a top plate 2, a lifting motor 3, a guide limit assembly 4 and a drilling assembly. The top plate 2 is installed on the top of the support frame 1, and the lifting motor 3 is installed on the upper surface of the top plate 2. In front of the support frame 1, a guide limit assembly 4 is provided directly below the top plate 2. The drilling assembly passes through the guide limit assembly 4 to perform drilling operations.

[0027] The support frame 1 comprises a horizontally arranged support plate with a vertical connecting plate positioned vertically in the center of the support plate. A reinforcing rib is installed at the junction of the vertical connecting plate and the horizontal support plate. The top plate 2 is vertically connected to the top of the vertical connecting plate. The support frame 1 serves as the supporting framework of the entire mechanism, providing a stable mounting base for the top plate 2 and other components.

[0028] A through hole is provided in the middle of the top plate 2 , and the upper end of the drilling assembly passes through the through hole and is connected to the lifting motor 3 .

[0029] Further, such as Figure 2 and Figure 3 As shown, the guide and limiting assembly 4 includes a limiting structure and a guide structure, and the limiting structure is connected above the guide structure;

[0030] The limiting structure includes a mounting rod 405, a positioning plate 406, a mounting bolt 407 and a limiting frame 409; the guiding structure includes a bottom frame 401, a positioning cone 402, a guide frame 403, a reinforcing plate 404 and a guide plate 408; the bottom frame 401 is a rectangular frame structure, and the four corners of the lower surface of the bottom frame 401 are respectively connected with positioning cones 402; the guide frame 403 is a rectangular table structure, and the four supporting legs on the lower surface of the rectangular table are respectively vertically installed on the upper surface frame of the bottom frame 401, and the middle of the outer surface of the supporting legs on the left and right sides of the guide frame 403 are respectively connected with reinforcing plates 404, and the reinforcing plates 404 are in contact with the reinforcing ribs at the lower end of the front face of the support frame 1, which plays a role in strengthening the stability of the guide frame 403; the guide plate 408 has a hole in the center, and the guide plates 408 are provided in two groups and connected in parallel On the supporting legs under the rectangular table of the guide frame 403, the guide plate 408 provides guidance for the drilling components to ensure the accuracy of the drilling direction; a hole is opened in the center of the upper surface of the guide frame 403, and a limit frame 409 is set on the hole. The limit frame 409 limits the range of motion of the lifting shaft 412 to improve stability; the mounting rod 405 is vertically connected to the four corners of the upper surface of the guide frame 403, and the top of the mounting rod 405 is connected to the positioning plate 406 by the mounting bolt 407, which can position and reinforce the guide frame 403 from above; the positioning plate 406 is arranged parallel to the upper surface of the guide frame 403; a through hole is set in the center of the positioning plate 406, and the drilling component passes through the through hole and is limited by the limit frame 409, and is guided by the guide plate 408 to reach the bottom of the tunnel surrounding rock sampling drilling mechanism.

[0031] Furthermore, the bottom frame 401 is threadedly connected to the positioning cone 402 .

[0032] Furthermore, the drilling assembly is detachably connected in the limiting frame 409 .

[0033] The positioning cones 402 are distributed at the four corners of the bottom of the bottom frame 401. The four positioning cones 402 are fixed to the tunnel ground, so that the support frame 1 and the bottom of the bottom frame 401 are in contact with the tunnel ground, which can ensure that the bottom frame 401 can be stably placed under different geological conditions, improve the stability of the entire device, and provide a solid foundation for the entire guide and limit assembly 4; the two reinforcement plates 404 are set to strengthen the stability of the guide frame 403; the limit frame 409 limits and guides the lifting shaft 412; the guide plate 408 plays a guiding role for the drilling head 417 during lifting; the four mounting rods 405 are installed at the bottom of the positioning plate 406 through the mounting bolts 407, which can guide the limit frame 409 while improving the stability of the guide frame 403.

[0034] Further, such as Figure 4As shown, the drilling assembly includes a transmission structure, a fixed structure and a drilling head 417, the transmission structure is connected above the fixed structure, and the drilling head 417 is connected below the fixed structure; the transmission structure includes a transmission shaft 410, an input shaft 411 and a lifting shaft 412; the fixed structure includes a fixing rod 413, a drilling frame 414, a positioning block 415 and a positioning plate 416; the upper end of the transmission shaft 410 is connected to the lifting motor 3, the lower end is connected to the input shaft 411, the bottom of the input shaft 411 is connected to the lifting shaft 412, and the lifting shaft 41 The bottom of the drilling frame 414 is connected to the fixed rod 413; the fixed rod 413 is installed along the outer wall of the circumference. The drilling frame 414 has a three-pronged star structure and is installed at the bottom with three positioning blocks 415. The positioning blocks 415 are installed on a positioning plate 416. The lower surface of the positioning plate 416 is mounted with a drilling head 417; the three positioning blocks 415 at the bottom of the drilling frame 414 further enhance the stability during drilling. The positioning plate 416 is installed at the bottom of the fixed rod 413 and is used to fix the drilling head 417 to ensure the stability and accuracy of the drilling head 417 during operation.

[0035] The input shaft 411 is in transmission connection with the lifting shaft 412; the lifting shaft 412 is threadedly connected to the fixing rod 413; the fixing rod 413 is detachably connected to the drilling frame 414; the drilling frame 414 is threadedly connected to the positioning block 415; the positioning block 415 is threadedly connected to the positioning plate 416; and the positioning plate 416 is threadedly connected to the drilling head 417.

[0036] When in use, the four positioning cones 402 are fixed to the tunnel ground, so that the bottom of the support frame 1 and the bottom frame 401 are in contact with the tunnel ground, which improves the stability of use; the lifting motor 3 is fixed through the top plate 2, and the transmission shaft 410 at the bottom is connected to the input shaft 411, and the input shaft 411 drives the lifting shaft 412 to move, and the lifting shaft 412 passes through the limit frame 409, and the bottom is connected to the drilling frame 414 through the fixing rod 413; the lifting motor 3 drives the transmission shaft 410 to make the input shaft 411 drive the lifting shaft 412 to move up and down, so that it drives the drilling head 417 to move Drilling work is carried out in the tunnel; the fixing rod 413 and the drilling frame 414 are used to improve the support and stability of the drilling head 417 during drilling, the three positioning blocks 415 improve the connection stability of the drilling frame 414 and the positioning plate 416, the two reinforcement plates 404 are used to reinforce the guide frame 403, and the two guide plates 408 can guide the drilling head 417 when it is raised and lowered for drilling. The guide frame 403 is connected to the lifting shaft 412 using the mounting rod 405, and the limit frame 409 can also guide and limit the lifting shaft 412.

[0037] The lifting shaft 412 is connected to the fixed rod 413, the positioning plate 416, and the drilling head 417 via threads, facilitating installation, removal, and replacement. The limit frame 409 is sleeved onto the outer wall of the lifting shaft 412, providing both a position limit and facilitating disassembly and maintenance. The mounting rod 405 is threadedly connected to the base frame 401 and the positioning plate 406, secured with mounting bolts to ensure a stable structure for the entire guide and limit assembly 4.

[0038] Operation process:

[0039] 1. Start the lifting motor, and the power is transmitted to the lifting shaft through the transmission shaft and the input shaft, so that the lifting shaft drives the drilling head to move downward for drilling operation.

[0040] 2. During the drilling process, the guide plate and limit frame guide and limit the lifting shaft and drilling head to ensure that the drilling direction is accurate and stable.

[0041] 3. After drilling is completed, turn off the lifting motor and reverse the above steps to disassemble the drilling mechanism or perform the next drilling operation.

[0042] Installation steps:

[0043] 1. Place the bottom frame at the predetermined drilling position and drill it into the ground by rotating the positioning cone to ensure that the bottom frame is firmly fixed.

[0044] 2. Install the guide frame on the upper surface of the bottom frame so that the reinforcement plate is in close contact with the lower end of the front of the support frame, and fix it with bolts or welding (depending on the actual design).

[0045] 3. Install the mounting rods at the four corners of the upper surface of the guide frame and fix the positioning plate to the top of the mounting rods with the mounting bolts.

[0046] 4. Install the lifting motor on the upper surface of the top plate, and connect the transmission shaft, input shaft and lifting shaft in sequence to ensure that the transmission connection is stable.

[0047] Install the limit frame in the middle of the upper surface of the guide frame, and pass the lifting shaft through the limit frame.

[0048] 6. Install the fixing rod at the bottom of the lifting shaft, and connect the drilling frame, positioning block, positioning plate and drilling head in sequence. Pay attention to the tightness of the threaded connection to ensure that the components are firmly installed.

[0049] In the absence of conflicts, those skilled in the art may combine the relevant technical features in the above examples according to actual circumstances to achieve corresponding technical effects. Specific descriptions of various combinations are omitted here.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, the terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0052] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to these embodiments, but is intended to conform to the broadest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tunnel surrounding rock sampling drilling mechanism, characterized by: The invention comprises a support frame (1), a top plate (2), a lifting motor (3), a guide limit assembly (4) and a drilling assembly, wherein the top plate (2) is installed at the top of the support frame (1), the lifting motor (3) is installed on the upper surface of the top plate (2), and the guide limit assembly (4) is provided in front of the support frame (1) and directly below the top plate (2), and the drilling assembly passes through the guide limit assembly (4) to perform a drilling operation.

2. A tunnel surrounding rock sampling drilling mechanism according to claim 1, characterized in that: The support frame (1) comprises a horizontally arranged support plate, a vertical connecting plate is vertically arranged at the center of the support plate, a reinforcing rib plate is arranged at the connection between the vertical connecting plate and the horizontal support plate, and a top plate (2) is vertically connected to the top of the vertical connecting plate.

3. The tunnel surrounding rock sampling drilling mechanism according to claim 1, characterized in that: A through hole is provided in the middle of the top plate (2), and the upper end of the drilling assembly passes through the through hole and is connected to the lifting motor (3).

4. The tunnel surrounding rock sampling drilling mechanism according to claim 1, characterized in that: The guide and limiting assembly (4) comprises a limiting structure and a guide structure, wherein the limiting structure is connected above the guide structure; The limiting structure includes a mounting rod (405), a positioning plate (406), a mounting bolt (407) and a limiting frame (409); the guiding structure includes a bottom frame (401), a positioning cone (402), a guiding frame (403), a reinforcing plate (404) and a guiding plate (408); the bottom frame (401) is a rectangular frame structure, and the four corners of the bottom surface of the bottom frame (401) are respectively connected to the positioning cone (402); the guiding frame (403) is a rectangular table structure, and the four supporting legs on the bottom surface of the rectangular table are respectively vertically mounted on the upper surface frame of the bottom frame (401), and the middle of the outer surface of the supporting legs on the left and right sides of the guiding frame (403) are respectively connected to the reinforcing plates (404); the guiding plate (408 ) is opened in the center, two groups of guide plates (408) are provided and connected in parallel to the supporting legs below the rectangular table of the guide frame (403); a hole is opened in the center of the upper surface of the guide frame (403), and a limit frame (409) is provided on the hole; the mounting rod (405) is vertically connected to the four corners of the upper surface of the guide frame (403), and the top of the mounting rod (405) is connected to the positioning plate (406) through the mounting bolt (407); the positioning plate (406) is arranged parallel to the upper surface of the guide frame (403); a through hole is provided in the center of the positioning plate (406), and the drilling assembly passes through the through hole and is limited by the limit frame (409), and is guided by the guide plate (408) to reach the bottom of the tunnel surrounding rock sampling drilling mechanism.

5. The tunnel surrounding rock sampling drilling mechanism according to claim 4, characterized in that: The bottom frame (401) is threadedly connected to the positioning cone (402).

6. The tunnel surrounding rock sampling drilling mechanism according to claim 4, characterized in that: The drilling assembly is detachably connected in the limiting frame (409).

7. The tunnel surrounding rock sampling drilling mechanism according to claim 1, characterized in that: The drilling assembly comprises a transmission structure, a fixed structure and a drilling head (417), wherein the transmission structure is connected above the fixed structure, and the drilling head (417) is connected below the fixed structure; the transmission structure comprises a transmission shaft (410), an input shaft (411) and a lifting shaft (412); the fixed structure comprises a fixed rod (413), a drilling frame (414), a positioning block (415) and a positioning plate (416); the upper end of the transmission shaft (410) is connected to the lifting motor (3), and the lower end is connected to the input shaft (411); the bottom of the input shaft (411) is connected to the lifting shaft (412), and the bottom of the lifting shaft (412) is connected to the fixed rod (413); the fixed rod (413) is provided with a drilling frame (414) along the circumferential outer wall, the drilling frame (414) is a three-pointed star structure, and three positioning blocks (415) are installed at the bottom, the positioning blocks (415) are installed on the positioning plate (416), and the drilling head (417) is installed on the lower surface of the positioning plate (416).

8. The tunnel surrounding rock sampling drilling mechanism according to claim 7, characterized in that: The input shaft (411) is transmission-connected to the lifting shaft (412); the lifting shaft (412) is threadedly connected to the fixing rod (413); the fixing rod (413) is detachably connected to the drilling frame (414); the drilling frame (414) is threadedly connected to the positioning block (415); the positioning block (415) is threadedly connected to the positioning plate (416); and the positioning plate (416) is threadedly connected to the drilling head (417).

Images