Drill rod clamp

Abstract

A drill rod clamp, comprising a housing (5), a clamping device, a driving device (2), and a guiding device (3). The clamping device comprises a clamping assembly (1); the clamping assembly (1) is mounted inside the housing (5); the top of the clamping assembly (1) extends out of the top of the housing (5); the clamping assembly (1) is hinged to the inner wall of the housing (5); the driving device (2) is arranged inside the housing (5); the driving device (2) is hinged to the bottom of the clamping assembly (1); the driving device (2) can drive the clamping assembly (1) to open or close, so as to clamp or release a drill rod; the guiding device (3) is mounted on the back of the housing (5); and the drill rod can pass through the guiding device, such that the guiding device can guide and limit the drilling direction of the drill rod. Provision of the clamping device, the driving device (2) and the guiding device (3) enables the drill rod clamp to clamp drill rods of different specifications, thereby improving the applicability of the device. Provision of the guiding device (3) improves the hole position precision during construction, thus solving the problem of drill misalignment during pilot hole drilling.

Description

A drill clamp Technical Field

[0001] The utility model relates to the technical field of drill clamps, in particular to a drill clamp. Background Art

[0002] Drilling rigs are large-scale equipment used for drilling blastholes, advanced exploration holes, anchor holes, and advanced pipe-roof holes. The drill clamp is used to clamp the connecting sleeve, drill rod, and drill bit, connect and disconnect the drill rod or drill bit, and guide the drill rod.

[0003] In the existing technology, the efficiency of disassembling and assembling the drill rod is low during the drilling process, and the current drill clamp cannot clamp drill rods of different specifications, resulting in low versatility of the drill clamp; at the same time, the current drill clamp also has the problem of leading the hole and drilling, that is, the existing drill clamp cannot achieve the guiding function of the drill rod. Therefore, the existing drill clamp has a certain impact on the drilling construction efficiency, the versatility of installing drill rods of different specifications, and the accuracy of the construction hole position.

[0004] Utility Model Content

[0005] (1) Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a drill clamp, which solves the technical problems of low disassembly and assembly efficiency of the drill clamp, inability to install drill rods of different specifications and low accuracy of construction hole positions.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0009] The utility model provides a drill clamp, comprising a shell, a clamping device, a driving device and a guide device; the clamping device comprises a clamping assembly, the clamping assembly is installed inside the shell and the top of the clamping assembly extends out of the top of the shell, the clamping assembly is hinged on the inner wall of the shell, the driving device is placed inside the shell, the driving device is hinged to the bottom of the clamping assembly, and the driving device can drive the clamping assembly to open or close to clamp or release a drill rod; the guide device is installed on the back of the shell, and the drill rod can pass through the guide device to guide and limit the drilling direction of the drill rod.

[0010] Preferably, a swing space is provided on the top of the housing, and there is a gap between the outer side walls on both sides of the clamping assembly and the side walls on both sides of the swing space.

[0011] Preferably, the clamping assembly includes a first clamping arm and a second clamping arm; the first clamping arm and the second clamping arm are hinged on the inner wall of the shell by a pin shaft and the first clamping arm and the second clamping arm are mirror-symmetrical with the center line of the shell, and the side walls on the opposite sides of the top of the first clamping arm and the second clamping arm are provided with arc-shaped clamping ends, and the two arc-shaped clamping ends form a circle. The drill rod is placed between the arc-shaped clamping ends of the first clamping arm and the second clamping arm, and the first clamping arm and the second clamping arm are driven to rotate around the axis of the pin shaft by a driving device to clamp or disassemble the drill rod.

[0012] Preferably, the first clamping arm and the second clamping arm are in an inverted Z shape.

[0013] Preferably, the clamping assembly also includes two clamping blocks; the two clamping blocks are arc-shaped, and the two clamping blocks are detachably installed in the arc-shaped clamping ends of the first clamping arm and the second clamping arm respectively, and the outer wall of the drill rod is fitted with the inner walls of the two clamping blocks to clamp or release the drill rod.

[0014] Preferably, the driving device includes a cylinder and a mounting base; the mounting base is installed inside the outer shell, and a mounting space is provided on the mounting base. The cylinder is movably placed in the mounting space and the cylinder is arranged horizontally. The protruding end of the cylinder is hinged to the bottom of the first clamping arm, and the fixed end of the cylinder is against the bottom of the second clamping arm. The cylinder can be extended and retracted to drive the first clamping arm and the second clamping arm to rotate around the pin shaft, so that the first clamping arm and the second clamping arm can clamp or release the drill rod.

[0015] Preferably, the guide device includes a guide seat and a guide sleeve; the guide seat is installed on the back of the shell, the guide sleeve is detachably installed on the top of the guide seat and the through hole of the guide sleeve is directed toward the shell, the axis of the guide sleeve is consistent with the axis of the clamping assembly to guide the drill rod to drill into the guide sleeve and the outer wall of the drill rod is fitted with the inner wall of the through hole of the guide sleeve, thereby guiding the drill rod.

[0016] Preferably, a shock absorbing device is further included; the shock absorbing device is installed on the back side of the guide device to achieve buffering and shock absorption.

[0017] Preferably, the shock absorbing device includes a mounting plate and a buffer pad; the mounting plate is mounted on the back side of the guide device, the buffer pad is mounted on the mounting plate, and the buffering direction of the buffer pad is toward the drilling direction of the drill rod.

[0018] Preferably, the buffer pad is made of rubber or foam plastic.

[0019] (3) Beneficial effects

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model provides a drill clamp that can clamp a drill rod by providing a clamping assembly. The driving device is placed inside the housing, and the driving device is hinged to the bottom of the clamping assembly. The driving device can drive the clamping assembly to open or close, thereby clamping or loosening the drill rod, thereby improving the efficiency of assembly and disassembly of the device, and can also clamp drill rods of different specifications, thereby improving the applicability of the device. By installing a guide device on the back side of the housing, the drill rod can pass through the guide device, thereby guiding and limiting the drilling direction of the drill rod, thereby improving the hole position accuracy during construction drilling. The utility model can clamp drill rods of different specifications by providing a clamping device, a driving device, and a guiding device, thereby improving the applicability of the device. At the same time, by clamping the drill rod, the effect of efficient assembly and disassembly of the drill rod can be achieved. By providing a guide device, the hole position accuracy during construction can be improved, work efficiency can be improved, and the problem of drilling during the lead hole can be solved.

[0022] 2. A drill clamp of the utility model is provided with a swing space on the top of the shell, and there is a gap between the outer side walls on both sides of the clamping assembly and the side walls on both sides of the swing space, so that the clamping assembly can have enough space to clamp drill rods of different specifications, thereby maximizing the clamping of drill rods of different specifications and improving versatility.

[0023] 3. The present invention provides a drill clamp, wherein the clamping assembly includes a first clamping arm and a second clamping arm. The first clamping arm and the second clamping arm are hinged to the inner wall of the housing to enable rotation about the axis of the pin shaft. Furthermore, arc-shaped clamping ends are provided on the sidewalls on opposite sides of the tops of the first clamping arm and the second clamping arm, forming a circular shape. The rotation of the first clamping arm and the second clamping arm enables the first clamping arm and the second clamping arm to clamp drill rods of different specifications, thereby improving the applicability of the device. By configuring the first clamping arm and the second clamping arm in an inverted Z shape, the drill rod can be clamped more easily while being more adaptable to the interior space of the housing.

[0024] 4. A drill clamp of the utility model can assist the first clamping arm and the second clamping arm in clamping the drill rod by detachably installing two clamping blocks at the arc-shaped clamping ends of the first clamping arm and the second clamping arm. Since the clamping blocks will wear out during the clamping process, by detachably installing the clamping blocks, the clamping blocks can be replaced when the degree of wear of the clamping blocks becomes high, thereby improving the clamping efficiency and reducing the damage rate of the device.

[0025] 5. A drill clamp of the utility model is achieved by installing a mounting base inside a shell, and providing an installation space on the mounting base. The cylinder is movably placed in the installation space, and the protruding end of the cylinder is hinged to the bottom of the first clamping arm, and the fixed end of the cylinder is against the bottom of the second clamping arm. By driving the cylinder to extend, the protruding end of the cylinder drives the first clamping arm to rotate around the pin shaft. When the protruding end of the cylinder reaches a certain position, the protruding end of the cylinder continues to extend forward, driving the cylinder to move toward the direction of the second clamping arm, so that the fixed end of the cylinder drives the second clamping arm to rotate around the pin shaft, thereby achieving clamping of the drill rod.

[0026] 6. The utility model provides a drill clamp, which is provided with a guide seat and a guide sleeve. The guide sleeve is detachably mounted on the top of the guide seat, and the through hole of the guide sleeve is directed toward the outer shell. The axis of the guide sleeve is consistent with the axis of the clamping assembly to guide the drill rod into the guide sleeve, so that the drill bit drills into the rock formation according to the designed position and angle, thereby improving the construction hole position accuracy; since the guide sleeve is detachably mounted on the guide seat, guide sleeves of different diameters can be replaced when guiding drill rods of different specifications, thereby improving the versatility of the device.

[0027] 7. The drill clamp of the present invention can provide a buffering and shock-absorbing effect when the drill rod drills into the rock formation by installing a shock-absorbing device, thereby preventing the device from disturbing the surrounding rock during drilling and extending the service life of the device. The shock-absorbing device includes a mounting plate and a buffer pad. The buffer pad is installed on the back side of the guide device through the mounting plate, thereby increasing the buffering force of the buffer pad and preventing the device from being damaged during drilling. The buffer pad is made of rubber or foam plastic material, which can provide excellent shock absorption effect, and also has wear resistance, corrosion resistance and other effects. It is suitable for various scenarios and increases the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a perspective view of the overall structure of a drill clamp of the present invention;

[0029] FIG2 is a front structural schematic diagram of a drill clamp of the present invention;

[0030] FIG3 is a perspective view of the overall structure of a guide device of a drill clamp of the present invention.

[0031] [Description of Reference Numerals]

[0032] 1: Clamping assembly; 11: First clamping arm; 12: Second clamping arm; 13: Pin; 14: Clamping block; 2: Driving device; 21: Cylinder; 22: Mounting seat; 3: Guide device; 31: Guide seat; 32: Guide sleeve; 4: Shock absorber; 41: Mounting plate; 42: Buffer pad; 5: Housing. DETAILED DESCRIPTION

[0033] To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0034] Example 1

[0035] As shown in Figures 1-3, a drill clamp of this embodiment includes a housing 5, a clamping device, a driving device 2 and a guiding device 3.

[0036] Among them, the clamping device includes a clamping assembly 1, which is installed inside the shell 5 and the top of the clamping assembly 1 extends out of the top of the shell 5. The clamping assembly 1 is hinged to the inner wall of the shell 5, and the driving device 2 is placed inside the shell 5. The driving device 2 is hinged to the bottom of the clamping assembly 1. The driving device 2 can drive the clamping assembly 1 to open or close to clamp or release the drill rod; the guide device 3 is installed on the back of the shell 5, and the drill rod can pass through the guide device 3 to guide and limit the drilling direction of the drill rod. By setting up the clamping assembly 1, the drill rod can be clamped. The driving device 2 is placed inside the shell 5, and the driving device 2 is hinged to the bottom of the clamping assembly 1. The driving device 2 can drive the clamping assembly 1 to open or close, thereby clamping or loosening the drill rod, thereby improving the disassembly and assembly efficiency of the device, and can also clamp drill rods of different specifications, improving the applicability of the device; by installing the guide device 3 on the back side of the shell 5, the drill rod can pass through the guide device 3, thereby realizing the guidance and limitation of the drilling direction of the drill rod, thereby improving the hole position accuracy during construction drilling.

[0037] Specifically, a swing space is provided at the top of the housing 5, and a gap is formed between the outer sidewalls of the clamping assembly 1 and the sidewalls of the swing space. This allows the clamping assembly 1 to have sufficient space for clamping drill rods of different specifications, thereby maximizing the ability to clamp drill rods of different specifications and improving versatility. The clamping assembly 1 includes a first clamping arm 11 and a second clamping arm 12; the first clamping arm 11 and the second clamping arm 12 are hinged to the inner wall of the housing 5 via a pin 13, and the first clamping arm 11 and the second clamping arm 12 are mirror-symmetrical about the centerline of the housing 5. The first clamping arm 11 and the second clamping arm 12 are provided with arc-shaped clamping ends on the sidewalls on opposite sides of the top, and the two arc-shaped clamping ends form a circle. The drill rod is placed between the arc-shaped clamping ends of the first clamping arm 11 and the second clamping arm 12. The first clamping arm 11 and the second clamping arm 12 are driven by the driving device 2 to rotate about the axis of the pin to clamp or remove the drill rod. By hingedly connecting the first clamping arm 11 and the second clamping arm 12 to the inner wall of the housing 5, the first clamping arm 11 and the second clamping arm 12 can rotate about the axis of the pin 13. Moreover, the rotation of the first clamping arm 11 and the second clamping arm 12 can enable the first clamping arm 11 and the second clamping arm 12 to clamp drill rods of different specifications, thereby improving the applicability of the device. Preferably, the first clamping arm 11 and the second clamping arm 12 are inverted Z-shaped (for explanation, to match the shape of the housing 5, the tops of the first clamping arm 11 and the second clamping arm 12 extend vertically downward, and are hinged to the housing 5 at a first bending point via the pin 13. At the same time, a protective shell is installed around the hinged connection between the first clamping arm 11 and the second clamping arm 12 and the housing 5. At the first bending point, the first clamping arm 11 and the second clamping arm 12 bend obliquely downward along the shape of the housing 5 to form a second bending point, and extend vertically downward at the second bending point. The first clamping arm 11 and the second clamping arm 12 have the same structure and shape). By setting the shapes of the first clamping arm 11 and the second clamping arm 12 to be an inverted Z shape, the drill rod can be clamped more easily and can better adapt to the internal space of the housing 5.

[0038] Furthermore, the clamping assembly 1 also includes two clamping blocks 14; the two clamping blocks 14 are arc-shaped, and the two clamping blocks 14 are detachably installed in the arc-shaped clamping ends of the first clamping arm 11 and the second clamping arm 12 respectively. The outer wall of the drill rod is fitted with the inner wall of the two clamping blocks 14 to clamp or loosen the drill rod, which can assist the first clamping arm 11 and the second clamping arm 12 to clamp the drill rod. Since the clamping block 14 will be worn during the clamping process, by detachably installing the clamping block 14, the clamping block 14 can be replaced when the degree of wear of the clamping block 14 becomes high, so as to improve the clamping efficiency and reduce the damage rate of the device.

[0039] The driving device 2 includes a cylinder 21 and a mounting base 22; the mounting base 22 is installed inside the outer shell 5, and an installation space is provided on the mounting base 22. The cylinder 21 is movably placed in the installation space and the cylinder 21 is arranged horizontally. The protruding end of the cylinder 21 is hinged to the bottom of the first clamping arm 11, and the fixed end of the cylinder 21 is against the bottom of the second clamping arm 12. The cylinder 21 can be extended and retracted to drive the first clamping arm 11 and the second clamping arm 12 to rotate around the pin shaft 13, so that the first clamping arm 11 and the second clamping arm 12 can clamp or release the drill rod. By driving the oil cylinder 21 to extend, the extended end of the oil cylinder 21 drives the first clamping arm 11 to rotate around the pin shaft 13. When the extended end of the oil cylinder 21 reaches a certain position, the extended end of the oil cylinder 21 continues to extend forward, driving the oil cylinder 21 to move in the direction of the second clamping arm 12, so that the fixed end of the oil cylinder 21 drives the second clamping arm 12 to rotate around the pin shaft 13, thereby clamping the drill rod; when the drill rod is released, the extended end of the oil cylinder 21 is retracted, driving the first clamping arm 11 to rotate around the axis of the pin shaft 13, so that the arc-shaped clamping end rotates outward. As the extended end of the oil cylinder 21 retracts inward, when the first clamping arm 11 rotates to the maximum limit, the tail end of the oil cylinder 21 moves toward the first clamping arm 11 in the installation space, thereby realizing the inward rotation of the second clamping arm 12, and then realizing the release of the drill rod by the first clamping arm 11 and the second clamping arm 12.

[0040] The guide device 3 includes a guide seat 31 and a guide sleeve 32; the guide seat 31 is installed on the back of the shell 5, and the guide sleeve 32 is detachably installed on the top of the guide seat 31 and the through hole of the guide sleeve 32 is facing the shell 5. The axis of the guide sleeve 32 is consistent with the axis of the clamping assembly 1 to guide the drill rod to drill into the guide sleeve 32 and the outer wall of the drill rod is fitted with the inner wall of the through hole of the guide sleeve 32, thereby guiding the drill rod, and the inner wall of the through hole of the guide sleeve 32 is fitted with the outer wall of the drill rod, so that the drill bit drills into the rock formation according to the designed position and angle, thereby improving the construction hole position accuracy; since the guide sleeve 32 is detachably installed on the guide seat 31, when guiding drill rods of different specifications, guide sleeves 32 of different diameters can be replaced, thereby improving the versatility of the device.

[0041] Furthermore, the drill clamp of this embodiment also includes a shock absorbing device 4; the shock absorbing device 4 is installed on the back side of the guide device 3 to achieve cushioning and vibration reduction. The installation of the shock absorbing device 4 can provide a cushioning and vibration reduction effect when the drill rod drills into the rock formation, preventing the device from disturbing the surrounding rock during drilling and extending the service life of the device.

[0042] Specifically, the shock-absorbing device 4 includes a mounting plate 41 and a buffer pad 42. The mounting plate 41 is mounted on the back side of the guide device 3, and the buffer pad 42 is mounted on the mounting plate 41. The buffering direction of the buffer pad 42 is oriented toward the drilling direction of the drill rod, thereby increasing the buffering force of the buffer pad 42 and preventing damage to the device during drilling. Preferably, the buffer pad 42 is made of rubber or foam plastic. Using rubber or foam plastic as the buffer pad 42 provides excellent shock absorption, wear resistance, corrosion resistance, and other properties, making it suitable for various scenarios and extending the service life of the device.

[0043] Through the above structure, the working principle of a drill clamp of this embodiment is as follows:

[0044] As shown in Figures 1-3, first assemble the drill clamp. In the initial state, the cylinder 21 is in a retracted state, and the distance between the arc-shaped clamping ends of the first clamping arm 11 and the second clamping arm 12 is large. When drilling is required, the drill rod is passed through the through hole of the guide sleeve 32 and placed in the gap between the first clamping arm 11 and the second clamping arm 12. The cylinder 21 is driven to drive its protruding end to extend. Since the protruding end of the cylinder 21 is hinged to the bottom of the first clamping arm 11, the extension of the protruding end of the cylinder 21 drives the first clamping arm 11 to rotate around the axis of the pin 13. At the same time, the arc-shaped clamping end of the first clamping arm 11 rotates inward until the inner wall of the clamping block 14 is aligned with the drill bit. The outer wall of the drill rod is fitted. At this time, the first clamping arm 11 reaches the specified position, and the protruding end of the cylinder 21 continues to extend, and the tail end of the cylinder 21 rests on the inner wall of the second clamping arm 12. Since the protruding end of the cylinder 21 reaches the specified position, it can no longer extend, and the cylinder 21 moves toward the second clamping arm 12 to drive the second clamping arm 12 to rotate around the axis of the pin 13, so that the inner wall of the clamping block 14 on the second clamping arm 12 fits with the outer wall of the drill rod until the drill rod is clamped. The cylinder 21 stops moving, and then the drill bit of the drill rod is placed at the position where a hole needs to be drilled, and the buffer pad 42 is placed against the rock wall to perform drilling.

[0045] After drilling is completed, the oil cylinder 21 is driven to retract its extended end. The arc-shaped clamping end of the first clamping arm 11 rotates outward due to the retraction of the extended end of the oil cylinder 21, thereby loosening the clamping of the drill rod. At this time, the drill rod can be removed and taken out. Alternatively, the extended end of the oil cylinder 21 can be further driven to retract, so that the tail end of the oil cylinder 21 moves toward the first clamping arm 11, thereby returning the second clamping arm 12 to its initial position, thereby loosening the drill rod. Finally, the drill rod is removed and taken out.

[0046] The utility model can clamp drill rods of different specifications by arranging a clamping device, a driving device 2 and a guiding device 3, thereby improving the applicability of the device. At the same time, the drill rod can be efficiently disassembled and assembled by clamping the drill rod; by arranging the guiding device 3, the hole position accuracy during construction can be improved, the work efficiency is improved, and the problem of the drill running away during the lead hole is solved.

[0047] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0048] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0049] In the present invention, unless otherwise expressly specified or limited, when a first feature is “above” or “below” a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0050] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drill clamp, comprising a housing (5), characterized in that: It also includes a clamping device, a driving device (2) and a guiding device (3); The clamping device comprises a clamping assembly (1), the clamping assembly (1) is installed inside the housing (5) and the top of the clamping assembly (1) protrudes from the top of the housing (5), the clamping assembly (1) is hinged on the inner wall of the housing (5), the driving device (2) is arranged inside the housing (5), the driving device (2) is hinged to the bottom of the clamping assembly (1), and the driving device (2) can drive the clamping assembly (1) to open or close, so as to clamp or release the drill rod; The guide device (3) is installed on the back of the housing (5), and the drill rod can pass through the guide device (3) to guide and limit the drilling direction of the drill rod.

2. A drill clamp as claimed in claim 1, characterized in that: A swing space is provided at the top of the housing (5), and there is a gap between the outer side walls on both sides of the clamping assembly (1) and the side walls on both sides of the swing space.

3. A drill clamp as claimed in claim 2, characterized in that: The clamping assembly (1) comprises a first clamping arm (11) and a second clamping arm (12); The first clamping arm (11) and the second clamping arm (12) are hinged to the inner wall of the housing (5) through a pin shaft (13), and the first clamping arm (11) and the second clamping arm (12) are mirror-symmetrical about the center line of the housing (5). The side walls on the opposite sides of the tops of the first clamping arm (11) and the second clamping arm (12) are provided with arc-shaped clamping ends, and the two arc-shaped clamping ends form a circle. The drill rod is placed between the arc-shaped clamping ends of the first clamping arm (11) and the second clamping arm (12). The first clamping arm (11) and the second clamping arm (12) are driven by the driving device (2) to rotate around the axis of the pin shaft so as to clamp or disassemble the drill rod.

4. A drill clamp as claimed in claim 3, characterized in that: The first clamping arm (11) and the second clamping arm (12) are in an inverted Z shape.

5. A drill clamp as claimed in claim 4, characterized in that: The clamping assembly (1) further comprises two clamping blocks (14); The two clamping blocks (14) are arc-shaped and are detachably mounted in the arc-shaped clamping ends of the first clamping arm (11) and the second clamping arm (12), respectively. The outer wall of the drill rod fits with the inner walls of the two clamping blocks (14) to clamp or release the drill rod.

6. A drill clamp as claimed in claim 5, characterized in that: The driving device (2) comprises an oil cylinder (21) and a mounting seat (22); The mounting seat (22) is mounted inside the housing (5); a mounting space is provided on the mounting seat (22); the oil cylinder (21) is movably placed in the mounting space and the oil cylinder (21) is arranged transversely; the extended end of the oil cylinder (21) is hinged to the bottom of the first clamping arm (11); the fixed end of the oil cylinder (21) is against the bottom of the second clamping arm (12); the oil cylinder (21) can be telescopic to drive the first clamping arm (11) and the second clamping arm (12) to rotate around the pin shaft (13), so that the first clamping arm (11) and the second clamping arm (12) can clamp or release the drill rod.

7. A drill clamp as claimed in claim 1, characterized in that: The guide device (3) comprises a guide seat (31) and a guide sleeve (32); The guide seat (31) is installed on the back of the shell (5), the guide sleeve (32) is detachably installed on the top of the guide seat (31) and the through hole of the guide sleeve (32) is oriented toward the shell (5), the axis of the guide sleeve (32) is consistent with the axis of the clamping assembly (1), so as to guide the drill rod to drill into the guide sleeve (32) and the outer wall of the drill rod is in contact with the inner wall of the through hole of the guide sleeve (32), so as to guide the drill rod.

8. A drill clamp as claimed in claim 1, characterized in that: Also includes a shock absorbing device (4); The shock absorbing device (4) is installed on the back side of the guide device (3) to achieve buffering and shock absorption.

9. A drill clamp as claimed in claim 8, characterized in that: The shock absorbing device (4) comprises a mounting plate (41) and a buffer pad (42); The mounting plate (41) is mounted on the back side of the guide device (3), the buffer pad (42) is mounted on the mounting plate (41), and the buffering direction of the buffer pad (42) faces the drilling direction of the drill rod.

10. A drill clamp as claimed in claim 9, characterized in that: The buffer pad (42) is made of rubber or foam plastic.

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