Transformation type hydraulic down-the-hole drill suitable for small-angle construction in narrow terrain
By designing a small angle construction transformed hydraulic sub-hole drilling rig suitable for narrow terrain, using large stroke cylinders and adjustment carriages, the problems of low efficiency and high cost of traditional drilling rigs in narrow terrain and small angle construction are solved, and efficient and low-cost construction results are achieved.
Patent Information
- Application Number
- CN202422370579.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In the prior art, traditional sub-hole drilling rigs are inefficient and costly in narrow terrain and small angle construction, and cannot meet the needs of dam toe plate reverse slope pre-cracking construction.
A transformed hydraulic submersible drilling rig suitable for construction in small terrain and small angles is designed. It adopts a large-stroke oil cylinder and a adjustable carriage structure. By adjusting the elevation angle and length of the drilling arm, the flexibility and adaptability of the drilling hole are achieved.
It improves the efficiency of dam toe slab construction, reduces costs, and realizes rapid pre-cracking construction with small angle slope ratio. The equipment is simple and practical, and has good stability.
Smart Images
Figure CN223241370U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of drilling equipment for dam toe plate construction of water conservancy and hydropower projects, and particularly relates to a convertible hydraulic down-the-hole drill suitable for construction in narrow terrain and small angles. Background Art
[0002] Due to the special characteristics of the dam toe plate, the drilling operation area on the toe plate and reverse slope is narrow. Traditional toe plate reverse slope pre-cracking drilling equipment uses a 100B down-the-hole drill rig, which has high drilling labor costs and extremely low drilling efficiency. The CM351 down-the-hole drill rig has difficulty operating in narrow terrain and cannot drill horizontally at small angles. Therefore, it is necessary to design a convertible hydraulic down-the-hole drill rig suitable for narrow terrain and small angles to solve this problem. Summary of the Invention
[0003] The technical problem to be solved by the utility model is to provide a convertible hydraulic down-the-hole drill rig suitable for construction on narrow terrain and small angles. The device solves the problems of low efficiency of existing toe plate excavation construction, narrow site, and difficulty in construction with small angle slope ratios. It can speed up the construction efficiency of the dam toe plate, save costs, and realize rapid drilling construction with pre-cracking of small angle slope ratios.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a convertible hydraulic down-the-hole drill rig suitable for construction in narrow terrain and small angles, including a drill rig main body, an extension arm connected to the front end of the drill rig main body, a long-stroke oil cylinder is provided at the bottom of the extension arm, the tail end of the long-stroke oil cylinder is hinged to the extension arm, the output end of the long-stroke oil cylinder is hinged to the side surface of the drill arm, and the front end of the extension arm is hinged to the side surface of the drill arm; an adjustment slide is connected to one side surface of the drill arm.
[0005] Preferably, the lower surface of the extension arm and the side surface of the drill arm are both connected with ear seats, and the ear seats are composed of two parallel plate structures, and the surface of the plate structure is opened.
[0006] Preferably, the tail end and the output end of the long-stroke oil cylinder are both provided with a through pin hole, a pin shaft passes through the pin hole, and both ends of the pin shaft pass through the openings of the ear seat and are hinged to the ear seat.
[0007] Preferably, one end of the pin is a nut head structure, and the other end is provided with a thread connected to a locking nut for limiting position, and a rubber ring is provided on the end of the pin outside the locking nut.
[0008] Furthermore, the diameter of the rubber ring is slightly smaller than the diameter of the pin shaft, and after being extended, it is sleeved on the outer surface of the pin shaft to achieve a tight clamp, thereby preventing the nut from sliding off by itself during shaking.
[0009] Preferably, the adjusting slide includes a slide groove provided on the side surface of the drill arm, and a bracket is slidably connected in the slide groove for connecting to the drill rod; the bottom end of the bracket is connected to the output end of the adjusting cylinder, and the tail end of the adjusting cylinder is connected to the support seat at the bottom of the drill arm.
[0010] Preferably, the drill arm is a multi-section split drill arm connected by bolts, and the upper and lower ends of the multi-section split drill arm are provided with stepped slots, and the slots are fixedly connected by bolts; the multi-section split drill arm is provided with a slide groove on the side close to the adjustment slide, and the slide grooves are connected to form an integral slide groove after the multi-section split drill arm is connected.
[0011] The utility model provides a convertible hydraulic down-the-hole drill suitable for narrow terrain and small angle construction, which has the following beneficial effects:
[0012] By adopting a large-stroke oil cylinder, this device can increase the working elevation angle of the drill arm to meet the needs of small-angle drilling construction on the reverse slope of the toe plate; by adopting an adjustable slide, this device can reduce the working length of the drill arm to meet the needs of drilling construction in narrow terrain; it solves the problems of traditional drilling, which are high cost and low efficiency, and the problem that large down-the-hole drills are difficult to operate in narrow terrain and cannot drill horizontally at small angles; the equipment is simple and practical, easy to construct, highly efficient, low cost and good stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0014] Figure 1 It is a structural diagram of the utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the connection between the pin shaft and the ear seat in the utility model;
[0016] In the figure: drilling rig body 1, extension arm 2, long-stroke cylinder 3, pin hole 31, pin shaft 32, ear seat 33, locking nut 34, rubber ring 35, drill arm 4, adjustment slide 5, bracket 51, adjustment cylinder 52. DETAILED DESCRIPTION
[0017] like Figure 1~Figure 2 A convertible hydraulic down-the-hole drill rig suitable for construction in narrow terrain and small angles includes a drill rig body 1, the front end of the drill rig body 1 is connected to an extension arm 2, a long-stroke oil cylinder 3 is provided at the bottom of the extension arm 2, the tail end of the long-stroke oil cylinder 3 is hinged to the extension arm 2, the output end of the long-stroke oil cylinder 3 is hinged to the side surface of the drill arm 4, the front end of the extension arm 2 is hinged to the side surface of the drill arm 4; an adjustment slide 5 is connected to the side surface of the drill arm 4.
[0018] Preferably, the lower surface of the extension arm 2 and the side surface of the drill arm 4 are both connected with an ear seat 33, and the ear seat 33 is composed of two parallel plate structures, and the surface of the plate structure is opened.
[0019] Preferably, a through pin hole 31 is opened at the tail end and the output end of the long-stroke oil cylinder 3 , a pin shaft 32 passes through the pin hole 31 , and both ends of the pin shaft 32 pass through the openings of the ear seat 33 and are hinged to the ear seat 33 .
[0020] Preferably, one end of the pin shaft 32 is a nut head structure, and the other end is provided with a thread connected to the locking nut 34 for limiting. The end of the pin shaft 32 outside the locking nut 34 is sleeved with a rubber ring 35.
[0021] Furthermore, the diameter of the rubber ring 35 is slightly smaller than the diameter of the pin 32 , and after being extended, it is sleeved on the outer surface of the pin 32 to achieve a tight clamp, thereby preventing the nut from sliding off by itself during shaking.
[0022] Preferably, the adjusting slide 5 includes a slide groove opened on the side surface of the drill arm 4, and a bracket 51 is slidably connected in the slide groove for connecting to the drill rod; the bottom end of the bracket 51 is connected to the output end of the adjusting cylinder 52, and the tail end of the adjusting cylinder 52 is connected to the support seat at the bottom of the drill arm 4.
[0023] Preferably, the drill arm 4 is a multi-section split drill arm 4 connected by bolts, and the upper and lower ends of the multi-section split drill arm 4 are provided with stepped slots, and the slots are fixedly connected by bolts; the multi-section split drill arm 4 is provided with a slide groove on the side close to the adjustment slide 5, and the slide grooves are connected into an integral slide groove after the multi-section split drill arm 4 is connected.
[0024] The working principle of the above-mentioned convertible hydraulic down-the-hole drill rig suitable for narrow terrain and small angle construction is as follows:
[0025] During use, a large-stroke oil cylinder 3 with a suitable stroke is selected to connect with the extension arm 2 and the drill arm 4, and then the stroke of the large-stroke oil cylinder 3 can be adjusted to control the elevation angle of the drill arm 4 to be adjusted within the range of 0° to 90° from the horizontal; by adjusting the oil cylinder 52 to drive the bracket 51 to slide, the working length of the drill bit can be effectively extended or shortened; when the length of the drill arm 4 is insufficient or too long, the partial split drill arm 4 can be removed to increase or shorten the length of the entire drill arm 4, thereby solving the problem of inconvenience in use in a narrow space.
Claims
1. A convertible hydraulic down-the-hole drill rig suitable for narrow terrain and small angle construction, comprising a drill rig body (1), the front end of which is connected to an extension arm (2), characterized in that: The bottom of the extension arm (2) is provided with a large-stroke oil cylinder (3), the tail end of the large-stroke oil cylinder (3) is hinged to the extension arm (2), the output end of the large-stroke oil cylinder (3) is hinged to the side surface of the drill arm (4), and the front end of the extension arm (2) is hinged to the side surface of the drill arm (4); an adjustment slide (5) is connected to one side surface of the drill arm (4); the adjustment slide (5) includes a slide groove provided on the side surface of the drill arm (4), and a bracket (51) is slidably connected in the slide groove for connection with the drill rod; the bracket ( The bottom end of the adjusting oil cylinder (51) is connected to the output end of the adjusting oil cylinder (52), and the tail end of the adjusting oil cylinder (52) is connected to the support seat at the bottom of the drill arm (4); the drill arm (4) is a multi-section split drill arm connected by bolts, and the multi-section split drill arm has stepped card slots at the upper and lower ends, and the card slots are fixedly connected by bolts; the multi-section split drill arm has a slide slot on the side close to the adjusting slide (5), and the slide slots of the multi-section split drill arm are connected to form an integral slide slot.
2. The convertible hydraulic down-the-hole drill rig suitable for narrow terrain and small angle construction according to claim 1, characterized in that: The lower surface of the extension arm (2) and the side surface of the drill arm (4) are both connected to an ear seat (33), and the ear seat (33) is composed of two parallel plate-like structures, and the surface of the plate-like structure has holes.
3. The convertible hydraulic down-the-hole drill rig suitable for narrow terrain and small angle construction according to claim 2, characterized in that: The tail end and the output end of the large-stroke oil cylinder (3) are both provided with a through pin hole (31), a pin shaft (32) passes through the pin hole (31), and both ends of the pin shaft (32) pass through the opening of the ear seat (33) and are hinged to the ear seat (33).
4. The convertible hydraulic down-the-hole drill rig suitable for narrow terrain and small angle construction according to claim 3, characterized in that: One end of the pin shaft (32) is a nut head structure, and the other end is provided with a thread and a locking nut.