Drilling machine with hydraulic impact hammer function

Abstract

The drilling machine with the hydraulic impact hammer function comprises a machine frame, a feeding beam and a power head, the power head comprises a shell, a rotating sleeve, a driving shaft, an energy accumulator and an elastic device, the rotating sleeve is rotatably supported in the shell, the driving shaft is arranged in the rotating sleeve and can move relative to the rotating sleeve in the direction of a rotating shaft of the rotating sleeve, and the energy accumulator is arranged on the rotating shaft. The energy accumulator is arranged in the shell and located on the top of the driving shaft, the spring device is arranged in the shell, a gap is formed between the energy accumulator and the driving shaft so as to allow oil to flow into the gap, and therefore the energy accumulator and the spring device drive the driving shaft to reciprocate in the direction of the rotating shaft. According to the utility model, through reciprocating vibration of the driving shaft, impact damage to the hard structure geology is completed, the drilling speed is improved, and serious abrasion of the drill bit is avoided.

Description

Technical Field

[0001] The utility model relates to the field of engineering drilling, in particular to a drilling rig with a hydraulic impact hammer function. Background Art

[0002] Drilling rigs are used to drill into the soil and are commonly used in geological exploration. Existing drilling rigs use a motor to drive the drill rod to achieve drilling. When encountering extremely hard geological structures such as granite, relying solely on the power head to drive the drill rod is difficult to complete the drilling task. This not only slows down the drilling speed but also causes severe wear on the drill bit. Utility Model Content

[0003] The utility model provides a drilling rig with a hydraulic impact hammer function.

[0004] Specifically, the present invention is achieved through the following technical solutions:

[0005] An embodiment of the present utility model provides a drilling rig with a hydraulic impact hammer function, comprising a frame, a feed beam and a power head, wherein the power head comprises a shell, a rotating sleeve, a drive shaft, an accumulator and an elastic device, the rotating sleeve being rotatably supported in the shell, the drive shaft being arranged in the rotating sleeve and being movable relative to the rotating sleeve along the direction of the rotating axis of the rotating sleeve, the accumulator being arranged in the shell and located at the top of the drive shaft, the elastic device being arranged in the shell, and a gap being provided between the accumulator and the drive shaft so as to allow oil to flow into the gap, thereby driving the drive shaft to reciprocate along the direction of the rotating axis through the accumulator and the elastic device.

[0006] In some embodiments, the accumulator is configured as an air bag filled with inert gas.

[0007] In some embodiments, the housing includes an upper shell and a lower shell, the accumulator is disposed in the upper shell, and the rotating sleeve is disposed in the lower shell and extends downward from the lower shell.

[0008] In some embodiments, the rotating sleeve includes an outer sleeve and an inner sleeve, the outer sleeve and the inner sleeve are integrally connected, and the inner sleeve and the drive shaft are connected via a keyway.

[0009] In some embodiments, an oil inlet and an oil return port are provided on the housing, and both the oil inlet and the oil return port are communicated with the gap.

[0010] In some embodiments, the rotary sleeve includes an end cap, the drive shaft extends downward from the end cap, and the elastic member is disposed in the end cap so as to contact a key on the drive shaft.

[0011] In some embodiments, the drilling rig further comprises a pair of tapered roller bearings, and the boss of the swivel sleeve is supported between the pair of tapered roller bearings.

[0012] In some embodiments, the drilling rig further includes a hydraulic motor and a reducer, and the hydraulic motor drives the rotating sleeve to rotate through the reducer.

[0013] In some embodiments, teeth are formed on the outer periphery of the rotating sleeve, and the rotating sleeve is connected to the reducer through the teeth.

[0014] According to the embodiment of the utility model, when drilling into a relatively soft geological structure, the driving sleeve is driven to drive the drive shaft to rotate to complete the drilling work. When encountering a harder geological structure such as granite, oil is injected into the shell, so that the oil flows into the gap between the accumulator and the drive shaft. Under the buffering action of the accumulator, the oil pressure increases and pushes the drive shaft to move downward relative to the rotary sleeve. The compressed elastic device forces the drive shaft to move upward relative to the rotary sleeve, so that the drive shaft vibrates back and forth along the axis of the rotary sleeve, and the hard geological structure is broken by the impact hammer method.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] Figure 1 It is a schematic diagram of a drilling rig with a hydraulic impact hammer function in one embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Cross-section of the AA surface.

[0019] Reference numerals:

[0020] 1: Housing; 11: Upper housing; 12: Lower housing; 13: Oil inlet; 14: Oil return port;

[0021] 2: Rotating sleeve; 21: Outer sleeve; 211: Boss; 212: Teeth; 22: Inner sleeve; 23: End cap;

[0022] 3: drive shaft;

[0023] 4: Accumulator;

[0024] 5: elastic device;

[0025] 61: Tapered roller bearing; 62: Hydraulic motor; 63: Reducer. DETAILED DESCRIPTION

[0026] The present invention will now be discussed with reference to several embodiments. It should be understood that these embodiments are only discussed to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.

[0027] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including but not limited to," the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment," and the term "another embodiment" is to be interpreted as "at least one other embodiment." The terms "first," "second," and the like may refer to different or identical objects. The term "configured" is not limited to direct or indirect connections, nor is it limited to a specific method of connection. Other explicit and implicit definitions may be included below.

[0028] In the following description, some specific numerical values ​​or numerical ranges may be involved. It should be understood that these numerical values ​​and numerical ranges are merely exemplary, which may be helpful in putting the ideas of the present invention into practice. However, the description of these examples is not intended to limit the scope of the present invention in any way. Depending on the specific application scenario and requirements, these numerical values ​​or numerical ranges can be set separately.

[0029] As mentioned above, when encountering very hard geological structures such as granite, the existing technology makes it difficult for the drilling rig to complete the drilling work by relying solely on the power head to drive the drill rod to rotate. Not only is the drilling speed slow, but it also causes serious wear on the drill bit. The drilling rig with hydraulic impact hammer function proposed in the embodiment of the present utility model at least partially solves the above problems. Figures 1 to 2 The structure and operating principle of a hydraulic hammer drill according to an exemplary embodiment of the present invention will be described. The hydraulic hammer drill according to this embodiment primarily comprises a frame, a feed beam, and a power head. The frame supports the various functional components of the drill, and the feed beam drives the power head for feeding. The power head achieves damage to the geological structure and drilling through rotation and vibration. Those skilled in the art will appreciate that the drill according to this invention may also include conventional functional components of a drill, such as an engine, a control console, a winch, and a rope.

[0030] like Figure 1-2 As shown, the embodiment of the utility model realizes the rotation and vibration impact through the power head, and the power head at least includes a shell, a rotating sleeve, a drive shaft, an accumulator and an elastic device.

[0031] The housing is used to carry the various components of the power head and connect the power head to the feed beam. The housing can be integrally formed or assembled from multiple parts. In one embodiment, the housing is composed of an upper shell and a lower shell. The upper shell is used to provide installation space for the accumulator. To ensure that the accumulator has sufficient buffering effect and that the power head does not occupy too much usable space, the shape of the upper shell and the accumulator is set to be a slender strip. For example, the size of the accumulator is set to be close to that of the drive shaft, so that the accumulator's ability to act in the direction of the rotation axis o can be fully utilized.

[0032] The lower shell is used to provide installation space for the rotating sleeve, the reducer and the drive shaft. For example, the rotating sleeve can be basically installed in its entirety in the lower shell, or it can partially extend out of the lower shell.

[0033] The swivel sleeve is used to transmit the rotational power of the drive mechanism to the drive shaft. In one embodiment, the swivel sleeve comprises an outer sleeve and an inner sleeve. The outer sleeve is rotatably supported between a pair of tapered roller bearings via a boss. The outer edge of the boss is also provided with teeth that mesh with the gears of the reducer to enable the swivel sleeve to rotate. The inner sleeve and the outer sleeve are connected as a whole by screws. The inner circumference of the inner sleeve and the outer circumference of the drive shaft are mated via keyways, allowing the drive shaft to rotate integrally with the swivel sleeve and also move relative to the swivel sleeve along the axis o.

[0034] In one embodiment, the rotary sleeve may further include an end cap, which prevents the drive shaft from separating from the rotary sleeve and is used to install an elastic device. Exemplarily, the elastic device is selected from a coil spring or a disc spring, and is used to provide an upward elastic restoring force to the drive shaft.

[0035] The accumulator is used to cushion the drive shaft. In one embodiment, the accumulator is configured as an airbag filled with nitrogen or another inert gas. In another embodiment, the accumulator can be a spring, cylinder, or other component, as long as it can cushion the sudden increase in oil pressure. As previously mentioned, the airbag is located within the upper housing, with a narrow gap between the bottom of the airbag and the top of the drive shaft.

[0036] In one embodiment, the driving mechanism may be selected from a hydraulic motor, which drives the reducer to rotate and thereby drives the rotating sleeve to rotate.

[0037] In the embodiment of the present invention, an oil inlet 13 and an oil return port 14 are provided on the surface of the upper shell. When drilling in relatively soft geological structures, it is only necessary to start the hydraulic motor to drive the rotating sleeve to drive the drive shaft to rotate. During this process, the drive shaft is pressed against the bottom of the airbag by the drilling force, and the inert gas pressure in the airbag is sufficient to ensure that the drive shaft completes geological drilling. When encountering hard geological structures, oil is injected from the oil inlet 13, the oil fills the upper shell and flows into the gap between the airbag and the drive shaft. The instantaneous oil pressure increases and compresses the airbag, so that the oil pressure is buffered. The buffered oil pressure pushes the drive shaft downward. When the drive shaft moves downward to near the limit position, the compressed elastic device uses the elastic restoring force to push the drive shaft upward. At this time, the oil flows out from the oil return port 14, and at the same time, the oil inlet 13 continues to supply oil. This reciprocating process realizes the vibration of the drive shaft, completing the impact destruction of the hard geological structure.

[0038] The description of the embodiments herein and any references to directions and orientations are for ease of description only and are not to be construed as limiting the scope of protection of the present invention. The description of the preferred embodiments may involve combinations of features, which may exist independently or in combination. The present invention is not specifically limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drilling rig with a hydraulic impact hammer function, comprising a frame, a feed beam and a power head, characterized in that: The power head comprises a housing (1), a rotating sleeve (2), a drive shaft (3), an accumulator (4) and an elastic device (5); the rotating sleeve (2) is rotatably supported in the housing (1); the drive shaft (3) is arranged in the rotating sleeve (2) and can move relative to the rotating sleeve (2) along the direction of the rotating axis of the rotating sleeve (2); the accumulator (4) is arranged in the housing (1) and is located at the top of the drive shaft (3); the elastic device (5) is arranged in the housing (1); a gap is provided between the accumulator (4) and the drive shaft (3) so as to allow oil to flow into the gap, thereby driving the drive shaft (3) to reciprocate along the direction of the rotating axis through the accumulator (4) and the elastic device (5).

2. The drilling rig with hydraulic impact hammer function according to claim 1, characterized in that: The accumulator (4) is configured as an air bag, and the air bag is filled with inert gas.

3. The drilling rig with hydraulic impact hammer function according to claim 1, characterized in that: The housing (1) comprises an upper shell (11) and a lower shell (12); the accumulator (4) is arranged in the upper shell (11); and the rotating sleeve (2) is arranged in the lower shell (12) and extends downward from the lower shell (12).

4. The drilling rig with hydraulic impact hammer function according to claim 1, characterized in that: The rotating sleeve (2) comprises an outer sleeve (21) and an inner sleeve (22); the outer sleeve (21) and the inner sleeve (22) are integrally connected; and the inner sleeve (22) and the driving shaft (3) are connected via a keyway.

5. The drilling rig with hydraulic impact hammer function according to claim 1, characterized in that: The housing (1) is provided with an oil inlet (13) and an oil return port (14), and both the oil inlet (13) and the oil return port (14) are communicated with the gap.

6. The drilling rig with hydraulic impact hammer function according to claim 1, characterized in that: The rotating sleeve (2) comprises an end cover (23), the driving shaft (3) extends downward from the end cover (23), and the elastic device (5) is arranged in the end cover (23) so as to contact the key on the driving shaft (3).

7. The drilling rig with hydraulic impact hammer function according to claim 1, characterized in that: The drilling rig further comprises a pair of tapered roller bearings (61), and the boss of the rotating sleeve (2) is supported between the pair of tapered roller bearings (61).

8. The drilling rig with hydraulic impact hammer function according to claim 1, characterized in that: The drilling rig further comprises a hydraulic motor (62) and a reducer (63), and the hydraulic motor (62) drives the rotary sleeve (2) to rotate via the reducer (63).

9. The drilling rig with hydraulic impact hammer function according to claim 8, characterized in that: The outer periphery of the rotating sleeve (2) is formed with teeth, and is transmission-connected to the reducer (63) via the teeth.

Images