Drill rod clamp holder

Abstract

The utility model relates to the technical field of coal mine drill carriages, and provides a drill rod clamping device which comprises a base. The clamping piece I is movably arranged on the base; the second clamping piece is movably arranged on the base, the moving direction of the second clamping piece is parallel to the moving direction of the first clamping piece, and the first clamping piece and the second clamping piece are jointly used for clamping a drill rod; the first elastic piece acts on the second clamping piece and is used for providing force for the second clamping piece to get close to the first clamping piece. By means of the technical scheme, the problem that in the prior art, when a raising hole with a certain angle is drilled, a drill rod is prone to slipping is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine drilling vehicles, in particular to a drill rod clamp. Background Art

[0002] The main function of the hydraulic tunnel drilling vehicle in coal mines is to drill holes of different sizes and depths into the tunnel wall. During the drilling process, the drill rod needs to be guided and disassembled and connected, which requires frequent clamping and loosening of the drill rod. The drill rod clamp cooperates with the forward and reverse rotation of the main engine rotator to quickly connect and disassemble the drill rod. The working frequency is very high, and the torque reaches several thousand Newtons. Therefore, problems such as slip breakage, drill rod slippage, fatigue fracture of bolts fixing slips, and frequent replacement of slips often occur, which greatly affects the integrity rate of the drilling vehicle and greatly affects the construction progress. Especially when drilling upward holes at a certain angle, the slipping of the drill rod will cause serious accidents, which has a great impact on the personal safety of construction workers. Therefore, it is necessary to study a safe, efficient, strong holding force, non-slip, and convenient and quick maintenance drill rod clamp. Utility Model Content

[0003] The utility model provides a drill rod clamp, which solves the problem in the related art that the drill rod is prone to slip when drilling an upward hole at a certain angle.

[0004] The technical solution of the utility model is as follows:

[0005] A drill rod holder, comprising:

[0006] Base;

[0007] A clamping member 1, movably disposed on the base;

[0008] A second clamping member is movably arranged on the base, and a moving direction is parallel to a moving direction of the first clamping member, and the first clamping member and the second clamping member are used together to clamp the drill rod;

[0009] The elastic member 1 acts on the clamping member 2 to provide a force for the clamping member 2 to approach the clamping member 1.

[0010] As a further technical solution, the elastic member 1 is a rectangular spring.

[0011] As a further technical solution, it also includes:

[0012] A clamping piece is provided on both the first clamping piece and the second clamping piece. Both ends of the clamping piece have clamping teeth, and a toothless portion is provided between the clamping teeth.

[0013] As a further technical solution, it also includes:

[0014] A key bar, wherein the clamping member is arranged on the clamping member 1 through the key bar.

[0015] As a further technical solution, it also includes:

[0016] There are two baffles, which are respectively arranged on both sides of the clamping member 1 and respectively abut against the two ends of the key strip.

[0017] As a further technical solution, the base includes:

[0018] The sliding seat has a convex portion, and the clamping member 1 and the clamping member 2 both have a sliding groove, and the sliding groove is sleeved on the convex portion to move;

[0019] A fixed seat, on which the sliding seat is arranged.

[0020] As a further technical solution, it also includes:

[0021] A quick release pin and a cotter pin, wherein the sliding seat is arranged on the fixed seat through the quick release pin and the cotter pin.

[0022] As a further technical solution, it also includes:

[0023] A guide shaft is disposed through the clamping member 1 and the clamping member 2;

[0024] There are two linear drive members, which are respectively arranged at the two ends of the guide shaft and are used to drive the clamping member 1 and the clamping member 2 respectively. The elastic member is set on the guide shaft, one end of which acts on the clamping member 2, and the other end of which acts on one of the linear drive members.

[0025] As a further technical solution, it also includes:

[0026] A top column, wherein one of the linear driving members is drivingly connected to the top column, the first clamping member and the second clamping member have a communicating through hole, and the top column passes through the through hole to abut against or cancel the abutment with the second clamping member.

[0027] As a further technical solution, it also includes:

[0028] The elastic member 2 is sleeved on the guide shaft and is located inside the clamping member 1 and the clamping member 2. One end of the elastic member acts on the clamping member 1 and the other end acts on the clamping member 2 to provide a force to move the clamping member 1 and the clamping member 2 away from each other.

[0029] The working principle and beneficial effects of the utility model are:

[0030] 1. Replace the traditional disc spring that provides preload force with a rectangular spring, which has a longer service life, is more convenient to replace, safer, more reliable and more economical.

[0031] 2. The traditional two-piece slips have their middle part of the slip teeth removed. With the same size of oil cylinder force, the clamping force is increased by about 2 times, which greatly enhances the clamping force of the slips, prevents the drill rod from slipping, increases the safety factor, and prolongs the service life of the slips, saving spare parts replacement costs. This improvement is suitable for all two-piece slips equipment, and the clamping force increase is the same.

[0032] 3. Traditionally, the slips are fixed by bolts. Frequent loading and unloading of drill pipes can easily cause fatigue and fracture of the bolts. In addition, the space for replacing the slips is very small, which makes the operation inconvenient. Using key bars to fix the slips not only improves the centering of the slips, but also allows the key bars to transmit torque more fully, thus reducing the number of failure points and improving the equipment availability.

[0033] 4. The replacement of slips is very convenient. You only need to remove the baffle on the end face to quickly replace it.

[0034] 5. To replace the entire clamp, you only need to pull out the two quick-release pins, which greatly reduces the waiting time for equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0036] Figure 1 This is a structural schematic diagram of the utility model from one viewing angle;

[0037] Figure 2 This is a schematic diagram of the structure of the utility model from another perspective;

[0038] Figure 3 This is a side view of the structure of the utility model;

[0039] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle;

[0040] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure at the middle BB;

[0041] In the figure: 1, base, 2, clamping part 1, 3, clamping part 2, 4, elastic part 1, 5, clamping part, 6, clamping tooth, 7, key bar, 8, baffle, 9, sliding seat, 10, protrusion, 11, slide groove, 12, fixed seat, 13, quick release pin, 14, cotter pin, 15, guide shaft, 16, linear drive part, 17, top column, 18, through hole, 19, elastic part 2. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0043] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0044] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0045] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] Example 1

[0047] Reference Figure 1 , which is the first embodiment of the utility model, proposes a drill rod clamp, including a base 1; a clamping member 2 is movably arranged on the base 1; a clamping member 3 is movably arranged on the base 1, and the moving direction is parallel to the moving direction of the clamping member 2, and the clamping member 2 and the clamping member 3 are used to clamp the drill rod together; an elastic member 4 acts on the clamping member 2 3 to provide a force for the clamping member 2 3 to approach the clamping member 2. Further, the elastic member 4 is a rectangular spring.

[0048] In this embodiment, in order to solve the problem of the drill rod slipping easily when drilling a certain angle upward hole in the related art, multiple elastic parts 14 are arranged, and the clamping part 12 and the clamping part 23 are the left slip seat and the right slip seat respectively. When the drill rod clamp is in the initial state, or when the oil circuit is not supplied with hydraulic oil due to power failure or other faults during operation, the clamp can use multiple elastic parts 14 as power to push the clamping part 23 to move to the left, so that the clamping part 12 and the clamping part 23 are closed to clamp the drill rod. When the drill rod is tilted upward to drill a hole, or when drilling a vertical hole, the drill rod has a tendency to slide downward due to its own weight. The preload force formed by the elastic part 14 can quickly react to clamp the drill rod to prevent the drill rod from sliding and ensure the safety of the operator. This function is particularly important when mechanical equipment fails or power outages occur.

[0049] In addition, the elastic member 4 is a rectangular spring, which has a longer service life, is easier to replace, is safer, more reliable and more economical.

[0050] Example 2

[0051] Reference Figure 1 , Figure 2 , which is the second embodiment of the utility model, and this embodiment is different from the embodiment 1 in that:

[0052] Furthermore, it also includes a clamping member 5, which is disposed on both the clamping member 1 2 and the clamping member 2 3, and has clamping teeth 6 at both ends of the clamping member 5, and a toothless portion between the clamping teeth 6. Furthermore, the clamping member 5 is disposed on the clamping member 1 2 through a key bar 7. Furthermore, it also includes two baffles 8, which are respectively disposed on both sides of the clamping member 1 2 and respectively abut against the two ends of the key bar 7.

[0053] In this embodiment, the clamping teeth 6 in the middle part of the clamping member 5 are removed. With the same size of cylinder force, the clamping force is increased by about 2 times, which greatly enhances the clamping force of the clamping member 5, prevents the drill rod from slipping, enhances the safety factor, and at the same time extends the service life of the clamping member 5, saving the cost of replacing spare parts.

[0054] In addition, the conventional fixing method of the clamp 5 is bolt fixing, and frequent loading and unloading of the drill pipe easily causes fatigue fracture of the bolts, and the space for replacing the clamp 5 is very small, which is inconvenient to operate. Using the key bar 7 to fix the clamp 5 not only improves the centering of the clamp 5, but also allows the key bar 7 to transmit torque more fully, thereby reducing the failure points and improving the equipment integrity rate. Moreover, the replacement of the clamp 5 is very convenient, and it can be quickly replaced by simply removing the baffle 8 on the end face.

[0055] Example 3

[0056] Reference Figure 1~Figure 5 , which is the second embodiment of the utility model. This embodiment is different from embodiments 1 and 2 in that:

[0057] Further, the base 1 includes a sliding seat 9, the sliding seat 9 has a convex portion 10, the clamping member 1 2 and the clamping member 2 3 both have a slide groove 11, and the slide groove 11 is sleeved on the convex portion 10 for movement; the fixed seat 12, the sliding seat 9 is arranged on the fixed seat 12. Further, it also includes a quick release pin 13 and a cotter pin 14, and the sliding seat 9 is arranged on the fixed seat 12 through the quick release pin 13 and the cotter pin 14.

[0058] In this embodiment, the entire clamp can be replaced by simply pulling out the two quick-release pins 13, which greatly reduces the waiting time for equipment maintenance.

[0059] Example 4

[0060] Reference Figure 1~Figure 5 , which is the second embodiment of the utility model. This embodiment is different from embodiments 1, 2, and 3 in that:

[0061] Furthermore, it also includes a guide shaft 15, which passes through the clamping member 1 2 and the clamping member 2 3; there are two linear driving members 16, which are respectively arranged at the two ends of the guide shaft 15, and are respectively used to drive the clamping member 1 2 and the clamping member 2 3; the elastic member 1 4 is sleeved on the guide shaft 15, one end of which acts on the clamping member 2 3, and the other end acts on one of the linear driving members 16. Further, it also includes a top column 17, wherein one of the linear driving members 16 is drivingly connected with the top column 17, the clamping member 1 2 and the clamping member 2 3 have a through hole 18 that communicates with each other, and the top column 17 passes through the through hole 18 to abut or cancel the abutment with the clamping member 2 3. Further, it also includes an elastic member 2 19, which is sleeved on the guide shaft 15, located in the clamping member 1 2 and the clamping member 2 3, one end of which acts on the clamping member 1 2, and the other end of which acts on the clamping member 2 3, and is used to provide a force for the clamping member 1 2 and the clamping member 2 3 to move away from each other.

[0062] In this embodiment, the first linear drive member 16, the left slip seat, four elastic members 2 19, the right slip seat, the rectangular spring and the second linear drive member 16 are connected in series in sequence through a long guide shaft 15, and the ends are fixed with a fixing nut, a slotted nut and a split pin 14. The left slip seat and the right slip seat, i.e., the clamping member 1 2 and the clamping member 2 3, have two-petal clamping members 5 fixed inside with a key bar 7, the end faces are fixed with a baffle 8 by bolts, and the bottom is jointly sleeved on the sliding seat 9. The two ends of the sliding seat 9 are respectively installed with fixed seats 12 through quick release pins 13 and split pins 14. Two top columns 17 passing through the left slip seat are installed between the first linear drive member 16 and the clamping member 1 2.

[0063] Both linear drive members 16 can use oil cylinders. The linear drive member 16 driving the top column 17 is composed of a cylinder body, a sealing ring, a thrust seat, and an oil port. The thrust seat reciprocates inside the cylinder body through the sealing ring. The oil port serves as an oil return port when the clamp is clamping, and as an oil supply port when the clamp is opening. The linear drive member 16 driving the clamp 2 3 is composed of a cylinder body, a sealing ring, a pressure shaft, and an oil port. The pressure shaft drives the sealing ring to reciprocate inside the cylinder body. The oil port serves as an oil supply port when the clamp is clamping, and as an oil return port when the clamp is opening.

[0064] Operation of unloading drill rod: When unloading drill rod, the clamp clamps the front drill rod, and the main machine clamps the rear drill rod and reverses it, and loosens the threads of the two drill rods. At this time, the preload force generated by the elastic member 4 is not enough to ensure that the drill rod does not slip. Therefore, the clamp needs to give the drill rod an additional clamping force to ensure that the drill rod does not slip when the drill rod is unloaded. At this time, it is necessary to send high-pressure hydraulic oil to the linear drive member 16 that drives the clamping member 2 3 through the oil port. Under the action of the high-pressure oil, the pressure shaft moves to the left, pushing the clamping member 2 3 to move to the left together, causing the clamping member 5 on the clamping member 2 3 to merge with the clamping member 2 3 on the clamping member 1 2, and finally clamping the drill rod. At this time, the drill rod is subjected to the double force of the linear drive member 16 and the rectangular spring, and the force is greater, ensuring that it does not slip during the process of unloading the drill rod.

[0065] Drill rod drilling operation: During the drilling process of the drill rod, the two clamps 5 of the clamp are loosened and do not provide any clamping force, but only guide the drilling of the drill rod. At this time, the oil port provides high-pressure hydraulic oil, and the thrust seat moves to the right under the action of the hydraulic oil, pushing the two top columns 17 to move to the right. The two top columns 17 pass through the clamp 1 2 and push the clamp 2 3 to move to the right. At this time, the clamp 2 3 applies thrust to the elastic part 1 4 and compresses it, thereby driving the two clamps 5 to separate to both sides and loosening the drill rod. During the process, the elastic part 2 19 opens due to the reduction of pressure, further ensuring that the clamp 1 2 and the clamp 2 3 are completely separated. At this time, the drill rod can slide or rotate freely inside the clamp.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A drill rod holder, characterized in that: include, Base (1); A clamping member (2) movably disposed on the base (1); A second clamping member (3) is movably arranged on the base (1), and its moving direction is parallel to the moving direction of the first clamping member (2), and the first clamping member (2) and the second clamping member (3) are used together to clamp the drill rod; The elastic member 1 (4) acts on the clamping member 2 (3) to provide a force for the clamping member 2 (3) to approach the clamping member 1 (2).

2. A drill rod holder according to claim 1, characterized in that: The elastic member 1 (4) is a rectangular spring.

3. A drill rod holder according to claim 1, characterized in that: Also includes, A clamping piece (5), wherein the clamping piece (1) and the clamping piece (2) are both provided with a clamping piece (5), and both ends of the clamping piece (5) have clamping teeth (6), and a toothless portion is provided between the clamping teeth (6).

4. A drill rod holder according to claim 3, characterized in that: Also includes, A key bar (7), wherein the clamping member (5) is arranged on the clamping member 1 (2) via the key bar (7).

5. A drill rod holder according to claim 4, characterized in that: Also includes, There are two baffles (8), which are respectively arranged on both sides of the clamping member 1 (2) and respectively abut against the two ends of the key strip (7).

6. A drill rod holder according to claim 1, characterized in that: The base (1) comprises: The sliding seat (9) has a convex portion (10), and the clamping member 1 (2) and the clamping member 2 (3) both have a sliding groove (11), and the sliding groove (11) is sleeved on the convex portion (10) to move; A fixed seat (12), the sliding seat (9) being arranged on the fixed seat (12).

7. A drill rod holder according to claim 6, characterized in that: Also includes, A quick-release pin (13) and a cotter pin (14); the sliding seat (9) is arranged on the fixed seat (12) via the quick-release pin (13) and the cotter pin (14).

8. A drill rod holder according to claim 1 or 2, characterized in that: Also includes, A guide shaft (15) is disposed through the clamping member 1 (2) and the clamping member 2 (3); There are two linear drive members (16), which are respectively arranged at the two ends of the guide shaft (15) and are used to drive the clamping member 1 (2) and the clamping member 2 (3) respectively. The elastic member 1 (4) is sleeved on the guide shaft (15), with one end acting on the clamping member 2 (3) and the other end acting on one of the linear drive members (16).

9. A drill rod holder according to claim 8, characterized in that: Also includes, A top column (17), wherein one of the linear driving members (16) is drivingly connected to the top column (17), the first clamping member (2) and the second clamping member (3) have a communicating through hole (18), and the top column (17) passes through the through hole (18) to abut against or cancel the abutment with the second clamping member (3).

10. The drill rod holder according to claim 8, characterized in that: Also includes, The second elastic member (19) is sleeved on the guide shaft (15) and is located inside the first clamping member (2) and the second clamping member (3), with one end acting on the first clamping member (2) and the other end acting on the second clamping member (3) to provide a force for moving the first clamping member (2) and the second clamping member (3) away from each other.

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