Quick-mounting clamp holder

Abstract

The utility model relates to the technical field of coal mine drilling machines, and discloses a fast-assembly clamp holder which comprises a clamp holder installation portion provided with a drill rod moving hole, the clamp holder installation portion is provided with a top opening and communicated with the drill rod moving hole, a turnover hole is formed in the side face of the clamp holder installation portion, and the clamp holder installation portion is rotationally provided with a swing body. A clamp holder is arranged on the swing body, the swing body takes the axis of the drill rod moving hole or the turning hole as the rotating axis, and a reinforcing plate is detachably connected to an opening in the top of the clamp holder. Through the arrangement of the opening, the drill rod moving hole is in an open state, enough mounting space is reserved for mounting large drilling tools such as a hole bottom motor, the mounting requirements of the large drilling tools such as the hole bottom motor in a narrow environment are met, and the large drilling tools such as the hole bottom motor are directly placed into the drill rod moving hole from the opening; the whole clamp holder does not need to be detached or the whole drilling machine does not need to be inclined, the overall structural strength of the clamp holder is improved through the additionally-arranged reinforcing plate, and the requirement for underground continuous operation is met.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine drilling machines, in particular to a quick-install clamp. Background Art

[0002] The clamp is an important part of the drilling rig, responsible for clamping the drill pipe, cooperating with the power head to connect and disconnect the drill pipe joint and keep the drill pipe from slipping. With the development of drilling technology, the supporting clamps of the drilling rig are also gradually evolving to meet the needs of clamping and loading and unloading drill pipes of the drilling rig. Among them, the drill pipe loading and unloading technology of directional drilling rigs is particularly complex, which requires loading and unloading of both ordinary drill pipes and large drilling tools such as bottom hole motors.

[0003] When the existing clamp is used in a directional drilling rig, some large drill tools have a much larger length or outer diameter than ordinary drill rods, making it difficult to directly place the large drill tools in the clamp. For example, the bottom hole motor, the core drill tool for directional drilling, has a much larger length and outer diameter than ordinary drill rods, and a power head is provided at the rear end of the drilling axis of the drilling rig. The distance between the power head and the clamp for installing and removing the drill rod is limited, making it impossible to install and remove the bottom hole motor from the rear end or middle of the frame, which is common for drilling rigs. The bottom hole motor can only be installed from the clamp, i.e., the front end of the frame, i.e., the bottom hole motor is inserted into the clamp from the front end of the frame. However, in order to ensure the accuracy of the left and right position and the up and down inclination of the borehole, it is necessary to determine the left and right position and the up and down inclination of the borehole axis through the inner hole axis of the clamp before installing the bottom hole motor. After determination, the distance from the front end of the clamp to the hole wall is very limited, making it difficult to directly install the bottom hole motor into the clamp.

[0004] There are generally two solutions at the current construction site: the first is to insert the bottom hole motor into the clamp at a certain angle relative to the axis of the inner hole of the clamp (i.e. the drilling axis), but the scope of application of this method is very limited. When the distance between the clamp and the hole wall is small to a certain extent, the over-tilted bottom hole motor will not be able to align with the inner hole of the clamp. The second method is to dismantle the clamp as a whole, install the bottom hole motor and send it into the hole, and then reinstall the clamp to adapt to the installation of other drill rods. This method has a wide range of applications and can also be used when the distance between the clamp and the hole wall is small. However, due to the large size, heavy weight and complex structure of the clamp, both methods will consume a lot of manpower and construction time, seriously affecting construction efficiency, and have huge safety hazards. Utility Model Content

[0005] The utility model aims to provide a quick-install clamp to simplify the installation process of large drilling tools, reduce manpower and construction time, and improve construction efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a quick-release clamp, including an end cover, a clamp body and a clamp mounting portion provided with a drill rod moving hole, the clamp body is rotatably arranged on the clamp mounting portion through the end cover, an opening is arranged on the top of the clamp mounting portion to open the drill rod moving hole, the width of the opening is greater than or equal to the outer diameter of the large drilling tool, a flipping portion is arranged on the side of the clamp mounting portion, and the clamp can flip around the flipping portion and move away from the opening of the drill rod moving hole.

[0007] The beneficial effects of this solution are as follows: by setting an opening and connecting the opening with the drill rod moving hole, the side of the drill rod moving hole is in an open state. When installing large drilling tools such as bottom hole motors, the operator can flip the clamp around the flip part, flip out the clamp installation part, and reserve sufficient installation space to meet the installation requirements of large drilling tools such as bottom hole motors. Large drilling tools such as bottom hole motors are placed directly into the drill rod moving hole from the opening, and pre-clamped by external tools such as the drill rig's clamp or pipe clamp until it is connected to the power head to carry out drilling operations, without the need to disassemble the clamp as a whole or tilt the drilling rig as a whole.

[0008] Furthermore, the flipping part includes a flipping plate, which is provided with a flipping hole, and the flipping plate is fixedly arranged on the side wall of the clamp mounting part; the clamp body includes a swinging body, and the lower part of one side of the swinging body is fixedly connected with a swinging ear seat and a hinged shaft seat corresponding to the flipping hole, and the swinging ear seat is hinged with a driving member that drives the swinging body to swing around the axis of the flipping hole; the driving member is a retractable member, one end of the driving member is hinged to the frame, and the other end is hinged to the swinging ear seat.

[0009] Beneficial effect: The swing body is driven to rotate and flip through a retractable driving member, and the operator only needs to replace the corresponding parts when switching the working conditions, which reduces the manpower input and improves the automation of the equipment.

[0010] Furthermore, a reinforcing plate is included, and the reinforcing plate is detachably connected to the top opening of the clamp.

[0011] Beneficial effect: The design of the reinforcement plate effectively reduces the reduction in structural strength caused by the single-sided opening on the top of the clamp. At the same time, the connection method is designed to be detachable, and the reinforcement plate can also be removed when installing large drilling tools such as bottom hole motors or performing maintenance, so as to avoid the reinforcement plate affecting the installation of large drilling tools such as bottom hole motors or the maintenance of drill rods.

[0012] Furthermore, the clamp mounting part includes a front support plate and a rear support plate, the drill rod moving hole is arranged on the front support plate and the rear support plate, and the flip plate is fixedly arranged on the side walls of the front support plate and the rear support plate; it also includes a pin shaft adapted to the flip hole and the articulated shaft seat, and the swing body is rotatably arranged between the front support plate and the rear support plate through the end cover or the pin shaft.

[0013] Furthermore, a first protrusion is arranged on the opening side of the front support plate and the rear support plate, and the first protrusion is arranged on both sides of the opening to form a first groove; a second protrusion corresponding to the opening is arranged in the middle of the reinforcing plate, and the inner side surface of the second protrusion is tangent to the cylinder where the through hole is located, and second grooves corresponding to the first protrusion are arranged on both sides of the second protrusion; the reinforcing plate is detachably connected to the top of the front support plate and the rear support plate.

[0014] Beneficial effect: The second protrusion and the second groove of the reinforcing plate correspond to the first groove and the first protrusion on the front support plate and the rear support plate respectively, and a complete plane is formed by interlacing and nesting with each other, which not only improves the structural strength of the support plate, but also facilitates the installation of the reinforcing plate.

[0015] Furthermore, the clamp body includes a clamping cylinder and a slip, the clamping cylinder includes an output shaft, the slip is fixedly connected to the output shaft and forms a moving pair under the drive of the output shaft, and the slip is detachably connected to the output shaft.

[0016] Beneficial effect: The clamping of the drill rod is driven by the hydraulic system of the clamping cylinder, and no additional power supply equipment is required, which reduces the layout requirements of the working environment.

[0017] Furthermore, the clamp body also includes a swinging body, which includes a swinging support plate, on which is provided a mounting through hole coaxial or parallel to the drill rod moving hole, the clamping cylinder is fixedly arranged on both sides of the mounting through hole, and the output shaft extends toward the center from both sides of the mounting through hole and is fixedly connected to the cava seat.

[0018] Furthermore, the end cover is provided with a guide hole, the diameter of the guide hole matches the diameter of the drill rod; the outer diameter of the end cover is divided into two levels: a small diameter section and a large diameter section, the small diameter section of the end cover is coaxial with the installation through hole, and the large diameter section is coaxial with the through hole of the clamp mounting part.

[0019] Beneficial effects: During the working process of the clamp, the drill rod needs to constantly enter and exit the clamp. Since the slips on both sides of the clamp need to be opened and closed frequently and the spacing often changes, it generally does not have a guiding function. In the traditional drilling rig structure, the clamp and the guide sleeve are generally arranged at the front end of the frame as two independent components, occupying a large length space. Some drilling rigs used in narrower spaces or with compact structure requirements have eliminated the guide sleeve to save space in the drilling direction. The inner sleeve of the traditional guide sleeve is a rotatable hollow cylinder. An inner sleeve can only adapt to drill rods with one outer diameter. After the drilling rig changes the drill rod diameter, the guide sleeve must be replaced as a whole or the inner sleeve must be replaced separately to adapt to the outer diameter of the new drill rod. It is relatively simple to replace the guide sleeve as a whole, but the spare parts cost is relatively high; replacing the inner sleeve separately is relatively complicated, but the cost is low, which is currently the method commonly used on site.

[0020] This solution replaces the traditional guide sleeve with a solid end cover, sets a guide hole on the end cover, and fixes the end cover to the swing body, so that the guide sleeve and the swing body are integrated into one. When adapting to drill rods of different diameters, it is only necessary to prepare end covers with guide holes of different diameters, which reduces the demand for installation space and makes the overall layout of the drilling rig more compact. At the same time, a nameplate engraved with the diameter of the guide hole can be fixed on the end cover to facilitate on-site management and identification. When drill rods of different diameters need to be replaced, it is only necessary to replace the corresponding end cover, which reduces the construction process and improves construction efficiency.

[0021] Furthermore, clamper mounting positions are detachably fixed on both sides of the swing support plate, and the clamping cylinder includes two cylinder barrels, which are symmetrically fixed on the clamper mounting positions.

[0022] Beneficial effects: 1. The modular design of the clamp facilitates independent maintenance and replacement, reduces maintenance costs and downtime, and improves the availability and economy of the equipment; 2. The piston rod of the clamping cylinder extends from both sides of the through hole to the center and is fixedly connected to the output shaft. This design ensures the synchronization and precise control of the clamping action, which is conducive to the precise execution of the clamping and releasing actions of the drill rod. At the same time, by symmetrically fixing the clamping cylinder at the clamp mounting position and the rear clamp mounting position, the clamping force is evenly distributed, the clamping accuracy and stability are improved, and the risk of deflection or slipping of the drill rod during operation is reduced.

[0023] Furthermore, it also includes a mounting plate, on which the front support plate and the rear support plate are fixedly arranged in parallel, and the mounting plate is detachably connected to the frame.

[0024] Beneficial effects: the front support plate and the rear support plate are fixedly arranged on the mounting plate to form a base, the swing body is rotatably arranged on the base, and the base is detachably connected to the frame, which is convenient for subsequent maintenance.

[0025] The swinging body of the present application can be mechanically swung out of the base by switching the rotation center, and combined with the detachable reinforcement plate structure of the base, the operating space inside and above the clamp is freed up to achieve the installation of large drilling tools such as bottom hole motors from top to bottom. This process only requires the disassembly and assembly of a small number of small parts, which not only reduces the space requirements of the front end of the clamp for the installation of large drilling tools such as bottom hole motors, but also saves a lot of time and manpower for the overall removal of the clamp, and ensures on-site safety.

[0026] At the same time, the design of the nested detachable reinforcement plate not only ensures the overall strength of the clamp during normal construction, but also meets the space requirements of the clamp for installing large drilling tools such as bottom hole motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0028] Figure 2 A three-dimensional diagram of the base of the utility model;

[0029] Figure 3 This is a three-dimensional diagram of the base of the utility model after removing the reinforcement plate;

[0030] Figure 4 It is a three-dimensional diagram of the swinging body of the utility model;

[0031] Figure 5 This is a front view of the utility model;

[0032] Figure 6 for Figure 5 Sectional view at AA in the middle;

[0033] Figure 7 It is a three-dimensional diagram of the end cover of the utility model. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific implementation methods:

[0035] The figure marks in the drawings of the specification include: base 1, mounting plate 101, front support plate 102, rear support plate 103, reinforcement plate 105, flip plate 104, end cover 2, small diameter section 201, large diameter section 202, swing body 3, swing support plate 301, clamper mounting position 302, lining plate 303, swing ear seat 304, articulated shaft seat 305, clamping cylinder 4, cava 5, and drive member 6.

[0036] Example

[0037] The embodiment is basically as shown in the attached Figure 1-7 As shown, Figure 1-7 A quick-release clamp as shown, Figure 1 As shown, it includes a base 1, a clamp body and an end cover 2, as shown Figure 2 As shown, the base 1 is used to support the clamp body, which is convenient for assembly and installation between the clamp body and the drilling rig. The base 1 includes a mounting plate 101, a reinforcing plate 105 and a clamp mounting portion. The side wall of the clamp mounting portion is fixed with a flip portion. The clamp mounting portion includes a front support plate 102 and a rear support plate 103. Figure 3 As shown, the front support plate 102 and the rear support plate 103 are provided with a drill rod moving hole, and the top of the front support plate 102 and the rear support plate 103 are provided with openings to open the drill rod moving hole, and the width of the opening is greater than or equal to the outer diameter of large drilling tools such as bottom hole motors, and a first protrusion and a first groove are provided on both sides of the opening. The front support plate 102 and the rear support plate 103 are welded in parallel to the mounting plate 101.

[0038] The flip part includes a flip plate 104 , which is welded to the sides of the front support plate 102 and the rear support plate 103 , and a flip hole is provided on the flip plate 104 .

[0039] As Figure 2 shown, a second convex block corresponding to the opening is provided in the middle of the reinforcing plate 105, and second grooves corresponding to the first convex blocks are provided on both sides of the second convex block. During installation, the second convex block and the second grooves of the reinforcing plate 105 respectively correspond to the first grooves and the first convex blocks on the front support plate 102 and the rear support plate 103. Through the interlacing and nesting of the first convex block, the second groove, the second convex block and the second groove, a complete plane is formed, which not only improves the structural strength of the support plate, but also facilitates the installation of the reinforcing plate 105.

[0040] The gripper body includes a swing body 3, a driving member 6, a pin shaft, a clamping oil cylinder 4 and a slip chuck 5. As Figure 4 shown, the swing body 3 includes a swing support plate 301. An installation through hole is provided on the side wall of the swing support plate 301. The cross section of the swing support plate 301 is in a "U" shape. Four lining plates 303 are welded or bolted in the middle of the swing support plate 301, preferably bolted. As Figure 6 shown, the lining plate 303 and the swing support plate 301 together form a slip chuck moving cavity. The slip chuck 5 is slidably arranged in the slip chuck moving cavity. Clamping device mounting positions 302 are bolted on the left and right sides of the swing support plate 301. A swing ear seat 304 and a hinge shaft seat 305 are welded at the lower part on the right side. The driving member 6 is a telescopic member such as a cylinder or an oil cylinder. The pin shaft can pass through the turning hole and be adapted to the hinge shaft seat 305. In this embodiment, the driving member 6 is an oil cylinder. The oil cylinder includes a cylinder body and an output shaft. The cylinder body is hinged to the frame, and the output shaft is hinged to the swing ear seat 304. Thus, through the expansion and contraction of the output shaft of the driving member 6, the swing body 3 is driven to rotate around the installation through hole or rotate around the hinge shaft seat 305.

[0041] The clamping oil cylinder 4 includes two cylinder barrels and corresponding piston rods. The two cylinder barrels are respectively bolted to the clamping device mounting positions 302. The piston rods extend from both sides of the drill pipe moving hole towards the center. An output shaft is welded to the piston rod, and the output shaft is bolted to the slip chuck 5. Thus, through the reciprocation of the piston rod, the clamping and loosening of the slip chuck 5 are realized.

[0042] As Figure 7 shown, the outer diameter of the end cover 2 is divided into two levels: a small diameter section 201 and a large diameter section 202. The outer diameter of the small diameter section 201 is less than or equal to the inner diameter of the installation through hole of the swing support plate. A countersunk through hole is provided on the end face of the large diameter section 202 for installing screws. During installation, the large diameter section 202 is fixed on the swing support plate 301 by passing the screws through the countersunk through hole. At the same time, the large diameter section 202 is rotatably arranged in the drill pipe moving hole to realize the axial limit of the swing body 3.

[0043] When the drill rod enters or exits the clamp body, the end cover 2 limits the circumferential deviation of the drill rod, ensuring that the drill rod is always within the range that can be clamped by the clamp body, while protecting the clamp body and the drilling rig power head from damage caused by excessive deviation of the drill rod.

[0044] When in use, a suitable end cover 2 can be selected according to the diameter of the rotating rod to adapt to the guiding work of drill rods of different diameters, or the end cover 2 and the reinforcing plate 105 can be removed, and the swing body 3 can be flipped out of the base 1 through the driving member 6 to free up a large amount of space inside and above the clamp, so as to realize the top-down installation of large drilling tools such as bottom hole motors.

[0045] Specific implementation process:

[0046] Under normal construction conditions, the clamp body is not equipped with a flip pin, and the end cover 2 is used as the central axis to achieve reciprocating swing within a smaller angle range under the drive of the driving member 6.

[0047] When the driving member 6 is required to flip the swing body out of the base 1 as a whole, the pin is inserted into the hinge shaft seat 305 through the flip hole, and the reinforcing plate 105 and the end cover 2 are removed, so that the swing body rotates around the flip hole and the bottom of the swing body is away.

[0048] Working principle:

[0049] Swinging working condition: Under normal construction conditions, sometimes the drill pipe in the clamp body and the drill pipe in the power head need to rotate relative to each other at a small angle, such as pre-loosening the drill pipe joint. However, the power head rotates at a fast speed and it is difficult to control the rotation angle. In this case, the clamp body is not equipped with a flip pin, and the end cover 2 is used as the central axis. Under the drive of the driving member 6, a reciprocating swing within a small angle range is achieved. By controlling the clamping force of the clamp body and the drill pipe, the pre-loosening of the drill pipe joint can be achieved.

[0050] The swing process is as follows:

[0051] Under normal construction conditions, the drill rod in the clamp body and the drill rod in the power head are sometimes required to rotate relative to each other at a small angle (for example, to pre-loosen the drill rod joint), but the power head rotates at a fast speed and it is difficult to control the rotation angle. Therefore, at this time, the clamp body is not equipped with a flip pin and related pin fixing parts, and the end cover is used as the central axis to achieve reciprocating swing under the drive of the driving member 6.

[0052] When the output shaft of the driving member 6 is extended, the left end of the clamp body is lowered and the right end is raised; when the piston rod of the driving member 6 is retracted, the left end of the clamp body is raised and the right end is lowered.

[0053] Flipping condition: When it is necessary to install large drilling tools such as a bottom hole motor or to remove the swing body 3 as a whole, the swing body 3 needs to be flipped out of the base 1 as a whole. When it is necessary to flip the swing body out of the base 1 as a whole through the driving member 6, the pin shaft is inserted into the hinge shaft seat 305 through the flipping hole, and the reinforcing plate 105 and the end cover 2 are removed, so that the swing body 3 rotates around the flipping hole, so that the bottom of the swing body 3 is away from the drill rod moving hole, leaving the operating space inside and above the clamp for operation.

[0054] The flipping process is as follows:

[0055] Install the flip pin and related pin fixing parts, and connect the base 1 and the swing body 3; remove the end covers 2 at the front and rear ends of the clamp body; at this time, the central axis of rotation of the clamp body is switched to the flip pin, and the clamp body can be rotated around the pin in the flip hole under the drive of the driving member 6; the corresponding relationship between the extension and rotation direction of the driving member 6 is the same as the swing working condition.

[0056] According to the principle of lever, since the rotation fulcrum moves toward the direction of the driving member 6, when the output shaft of the driving member 6 is retracted, under this working condition, the left end of the clamp body rotates more than the normal construction condition, and the swing body 3 can be turned clockwise over the center of the base 1, so that it is almost completely exposed from the base 1. At this time, if the reinforcing plate 105 on the front support plate 102 and the rear support plate 103 of the base 1 is removed, a very spacious space is formed inside and on the top of the clamp body, and large drilling tools such as the bottom hole motor can be directly placed from top to bottom.

[0057] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that the technical means for solving the problems in the above-mentioned embodiments of the utility model can be used in combination to solve multiple technical problems at the same time. For those skilled in the art, several deformations and improvements can be made without departing from the technical solution of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A quick-release clamp, comprising an end cap, characterized in that: The invention also includes a clamp body and a clamp mounting part provided with a drill rod moving hole. The clamp body is rotatably arranged on the clamp mounting part through an end cover. An opening is arranged on the top of the clamp mounting part to open the drill rod moving hole. The width of the opening is greater than or equal to the outer diameter of the large drilling tool. A flipping part is arranged on the side of the clamp mounting part. The clamp can flip around the flipping part and move away from the opening of the drill rod moving hole.

2. A quick-release clamp according to claim 1, characterized in that: The flipping part includes a flipping plate, which is provided with a flipping hole, and the flipping plate is fixedly arranged on the side wall of the clamp mounting part; the clamp body includes a swinging body, and the lower part of one side of the swinging body is fixedly connected with a swinging ear seat and a hinged shaft seat corresponding to the flipping hole, and the swinging ear seat is hinged with a driving member that drives the swinging body to swing around the axis of the flipping hole; the driving member is a retractable member, one end of the driving member is hinged to the frame, and the other end is hinged to the swinging ear seat.

3. A quick-release clamp according to claim 2, characterized in that: The invention also comprises a reinforcing plate which is detachably connected to the top opening of the clamp.

4. A quick-release clamp according to claim 3, characterized in that: The clamp mounting part includes a front support plate and a rear support plate, the drill rod moving hole is arranged on the front support plate and the rear support plate, and the flip plate is fixedly arranged on the side walls of the front support plate and the rear support plate; it also includes a pin shaft adapted to the flip hole and the hinge shaft seat, and the swing body is rotatably arranged between the front support plate and the rear support plate through the end cover or the pin shaft.

5. A quick-release clamp according to claim 4, characterized in that: A first protrusion is arranged on the opening side of the front support plate and the rear support plate, and the first protrusion is arranged on both sides of the opening to form a first groove; a second protrusion corresponding to the opening is arranged in the middle of the reinforcing plate, the inner side surface of the second protrusion is tangent to the cylinder where the through hole is located, and second grooves corresponding to the first protrusion are arranged on both sides of the second protrusion; the reinforcing plate is detachably connected to the top of the front support plate and the rear support plate.

6. A quick-release clamp according to claim 5, characterized in that: The clamp body also includes a clamping cylinder and a slip. The clamping cylinder includes an output shaft. The slip is fixedly connected to the output shaft and forms a moving pair under the drive of the output shaft. The slip is detachably connected to the output shaft.

7. A quick-release clamp according to claim 6, characterized in that: The swing body includes a swing support plate, which is provided with a mounting through hole coaxial or parallel to the drill rod moving hole, the clamping cylinder is fixedly arranged on both sides of the mounting through hole, and the output shaft extends from both sides of the mounting through hole to the center and is fixedly connected to the slip seat.

8. A quick-release clamp according to claim 7, characterized in that: The end cover is provided with a guide hole, the diameter of which matches the diameter of the drill rod; the outer diameter of the end cover is divided into two levels: a small diameter section and a large diameter section, the small diameter section of the end cover is coaxial with the installation through hole, and the large diameter section is coaxial with the through hole of the clamp installation part.

9. A quick-release clamp according to claim 8, characterized in that: The two sides of the swing support plate are detachably fixed with clamper mounting positions, and the clamping oil cylinder comprises two cylinder barrels, which are symmetrically fixedly mounted on the clamper mounting positions.

10. A quick-release clamp according to claim 9, characterized in that: It also includes a mounting plate, on which the front supporting plate and the rear supporting plate are fixedly arranged in parallel, and the mounting plate is detachably connected to the frame.

Images