Forward and reverse rotation lever driving tool

Abstract

The application discloses a positive and reverse rod piece driving tool, which comprises a driving inner sleeve, a power sleeve arranged outside the driving inner sleeve and a transmission sleeve arranged outside the power sleeve; one end of the driving inner sleeve is in transmission connection with a drill bit tail, and the other end of the driving inner sleeve is in transmission connection with a rod piece for driving the rod piece to rotate forward and reversely; the power sleeve can move linearly along the driving inner sleeve in the axial direction; and the transmission sleeve is in rotary connection with the driving inner sleeve. The rod piece driving tool can not only drive the rod piece to rotate forward, but also drive the rod piece to rotate reversely, and can solve the problem of axial movement of a driving nut when the rod piece rotates forward; after the rod piece driving is completed, the tool only needs to linearly withdraw to complete separation from the rod piece, and the dismounting process is quick and convenient, and the tool does not need to hold the rod piece for construction, so that the construction difficulty is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of lever drive technology, and in particular to a forward and reverse lever drive fixture. Background Technology

[0002] Currently, in the fields of geotechnical engineering, mining, and tunneling, anchor bolt support is commonly used, with resin anchor bolts and mortar anchor bolts being the most common types. In mine roadway support systems, resin anchor bolts have the advantages of short curing time and rapid stress application, but the cost of resin materials is very high.

[0003] The construction process of resin anchor bolts is as follows: (1) Drill anchor holes, (2) Send resin rolls into anchor holes, (3) Insert anchor bolts, (4) Rotate anchor bolts to break up resin rolls, and then use the resin rolls to anchor the bolts after they are mixed and solidified. In the second step, the resin rolls are usually pushed directly into the bottom of the anchor hole by high-pressure water or high-pressure air. However, during use, due to factors such as the anchor hole axis not being a standard straight line (i.e., the hole is not straight), the large friction between the resin rolls and the anchor hole, and the resin rolls themselves being soft and having poor guiding properties, it is difficult to deliver the resin rolls into place.

[0004] The existing technology proposes a self-drilling prestressed hollow anchor bolt (CN116291649A) with embedded anchoring agent, which solves this problem by reverse drilling and extruding the resin cartridge in forward rotation. It uses a drive component to rotate the anchor bolt, and a limiting component is set at the front end of the drive nut to restrict the axial movement of the drive nut during forward rotation to extrude resin. This structure has the following problems: 1. Firstly, the limiting component is for single use only, and each bolt is used once, thus increasing the anchor bolt construction cost; 2. Secondly, if the resin solidifies quickly, the nut will break through the limitation component and move forward in a short time, at which point the resin inside the anchor bolt is not completely extruded, resulting in poor anchor bolt fixing effect. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a forward and reverse rotating rod driving fixture that can drive the rod to rotate forward and reverse, and solve the problem of axial movement of the driving nut when the rod rotates forward. After the rod driving ends, the fixture can be separated from the rod by simply withdrawing in a straight line. The disassembly and assembly process is quick and convenient, and there is no need for pole-holding construction, which greatly reduces the construction difficulty.

[0006] The objective of this invention is achieved through the following technical solution: A forward and reverse reversing lever drive fixture includes a drive inner sleeve, a power sleeve disposed outside the drive inner sleeve, and a transmission sleeve disposed outside the power sleeve. One end of the drive sleeve is connected to the drill bit drive, and the other end of the drive sleeve is connected to the rod drive for driving the rod to rotate forward and backward. The power sleeve can move linearly along the axial direction of the drive inner sleeve; The transmission sleeve is rotatably connected to the drive inner sleeve. The transmission sleeve is provided with at least one locking pin for limiting the drive nut on the rod. One end of the locking pin extends into the drive inner sleeve. The transmission sleeve is connected to the power sleeve through at least one transmission component. When the power sleeve moves axially, it drives the transmission sleeve to rotate through the transmission component. When the transmission sleeve rotates, it drives the locking pin to move radially along the drive inner sleeve.

[0007] Furthermore, the circumferential wall of the power sleeve is provided with at least one spiral groove, the transmission component is fixed to the transmission sleeve, and one end of the transmission component extends into the spiral groove.

[0008] Furthermore, the transmission sleeve is provided with a drive groove, the width of which is adapted to the outer diameter of the pin, and the pin extends into the drive inner sleeve through the drive groove; The drive groove has an arc, and the distance from the lowest point of the drive groove to the axis of the drive inner sleeve gradually increases from the distance from the highest point of the drive groove to the axis of the drive inner sleeve.

[0009] Furthermore, the clip includes an oblong post and a cylinder connected to the oblong post. One end of the oblong post extends into the drive inner sleeve, and the other end of the oblong post is located inside the drive groove. The width of the oblong post is greater than the width of the drive groove. One end of the cylinder passes through the drive groove, and a horizontally arranged anti-detachment rod is provided at the end of the cylinder that passes through the drive groove.

[0010] Furthermore, the inner wall of the transmission sleeve is provided with a rotating groove, and the outer wall of the driving inner sleeve is provided with a rotating ring platform. The transmission sleeve is rotatably connected to the driving inner sleeve through the rotating groove and the rotating ring platform.

[0011] Furthermore, the transmission sleeve is provided with a threaded hole communicating with the interior of the transmission sleeve. The axial direction of the threaded hole is perpendicular to the axial direction of the drive inner sleeve. The transmission component is a screw, which is threadedly connected to the threaded hole. One end of the transmission component extends into the helical groove.

[0012] Furthermore, the end of the power sleeve is located outside the transmission sleeve, and the end of the power sleeve located outside the transmission sleeve is coaxially provided with a power ring plate; The inner wall of the power sleeve is provided with a rotation limiting groove along the axial direction, and the outer wall of the drive inner sleeve is provided with a protruding ridge that fits the rotation limiting groove. A power rod is connected to the power ring plate, and one end of the power rod is connected to the reciprocating telescopic power component; the cross-section of the power rod is F-shaped.

[0013] Furthermore, the reciprocating telescopic power component is a pneumatic cylinder, a hydraulic cylinder, or an electric telescopic rod.

[0014] Furthermore, the drive inner sleeve is a circular sleeve, and the drive inner sleeve is provided with a non-circular hole that is adapted to the drive nut.

[0015] The beneficial effects of this invention are: 1) The rod driving fixture of the present invention can not only drive the rod to rotate forward, but also drive the rod to rotate in reverse, and can solve the problem of axial movement of the driving nut when the rod rotates forward; after the rod driving ends, the fixture can be separated from the rod by simply withdrawing in a straight line. The disassembly and assembly process is quick and convenient, and there is no need for pole-holding construction, which greatly reduces the construction difficulty.

[0016] 2) When the tooling rotates as a whole, the power ring plate rotates within the circumference formed by the groove on the power rod (with a gap between the groove and the power ring plate), thus preventing the power rod from interfering with the rotation of the tooling. When the clamping is required, it is only necessary to activate the reciprocating telescopic power component to drive the power sleeve to make linear motion through the power rod. Attached Figure Description

[0017] Figure 1 This is a perspective view of the forward and reverse rotation lever driving fixture in an embodiment of the present invention; Figure 2 This is a side view of the forward and reverse rotating lever drive fixture; Figure 3 for Figure 2 Sectional view along line AA; Figure 4 for Figure 2 Sectional view along the BB direction; Figure 5 A three-dimensional view of the drive inner sleeve, power sleeve, and transmission sleeve; Figure 6 A three-dimensional view of the drive inner sleeve and the power sleeve; Figure 7 A three-dimensional view of the side of the power sleeve and drive inner sleeve; In the diagram, 1. Drive inner sleeve; 2. Power sleeve; 3. Transmission sleeve; 4. Clip; 5. Transmission component; 6. Spiral inclined groove; 7. Drive groove; 8. Waist-shaped column; 9. Cylindrical column; 10. Anti-detachment rod; 11. Rotation groove; 12. Rotation ring platform; 13. Power ring plate; 14. Rotation limiting groove; 15. Protruding ridge; 16. Power rod. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] See Figures 1-6The present invention provides a technical solution: Example: like Figures 1-6 As shown, a forward and reverse reversing lever driving fixture includes a driving inner sleeve 1, a power sleeve 2 disposed outside the driving inner sleeve 1, and a transmission sleeve 3 disposed outside the power sleeve 2. One end of the drive inner sleeve 1 is connected to the drill bit drive, and the other end of the drive inner sleeve 1 is connected to the rod drive for driving the rod to rotate forward and backward (the drive inner sleeve 1 and the rod drive connection method is: the non-circular hole of the drive inner sleeve is sleeved outside the drive nut). The power sleeve 2 can move linearly along the axis of the drive inner sleeve 1; The transmission sleeve 3 is rotatably connected to the driving inner sleeve 1. The transmission sleeve 3 is provided with at least one locking pin 4 for limiting the driving nut on the rod. One end of the locking pin 4 extends into the driving inner sleeve 1. The transmission sleeve 3 is connected to the power sleeve 2 through at least one transmission component 5. When the power sleeve 2 moves axially, it drives the transmission sleeve 3 to rotate through the transmission component 5. When the transmission sleeve 3 rotates, it drives the locking pin 4 to move radially along the driving inner sleeve 1. When the power sleeve 2 resets, it drives the transmission sleeve 3 to rotate in the opposite direction through the transmission component 5. When the transmission sleeve 3 rotates in the opposite direction, it drives the locking pin 4 to reset and cancel the axial limitation on the driving nut.

[0020] In this embodiment, the rod is an anchor rod, but it can also be other strip-shaped structures that require rotation. When the anchor rod is driven in both forward and reverse directions, a driving (hexagonal) nut is installed on it. The rear end of the driving nut has an external dimension smaller than that of the driving nut. The end of the driving inner sleeve 1 furthest from the drill bit is fitted onto the driving nut. When the drill bit drives the driving inner sleeve 1 to rotate, the driving inner sleeve 1 drives the driving nut to rotate (the driving inner sleeve 1 is a circular sleeve with a non-circular hole adapted to the driving nut. The driving nut is generally a hexagonal nut, in which case the inner hole of the driving inner sleeve 1 is a regular hexagonal hole. Of course, the driving nut can also be other shapes, such as a regular octagon, square, or ellipse. In use, a stop nut is provided on the rod. The stop nut is smaller than the aforementioned non-circular hole and is located at the rear end of the driving nut to prevent the driving nut from retracting during reverse rotation).

[0021] Working principle: The drill bit provides power, which drives the inner sleeve 1 to rotate.

[0022] (1) When the rod reverses, the drill bit drives the inner drive sleeve 1 to rotate in the opposite direction. When the inner drive sleeve 1 rotates in the opposite direction, it drives the drive nut to rotate in the opposite direction. When the drive nut rotates in the opposite direction, the anchor rod rotates in the opposite direction due to the action of the anti-reverse nut. At this time, the anchor rod can be used for drilling or entering the anchor hole by rotating.

[0023] (2) Before rotating forward, first pull / push the power sleeve 2. In this embodiment, the power sleeve 2 is pulled (the power sleeve 2 can be driven manually or by the mechanical components described below). The power sleeve 2 moves along the axial direction of the inner drive sleeve 1. When the power sleeve 2 moves, it drives the transmission sleeve 3 to rotate relative to the inner drive sleeve 1 through the transmission component 5. When the transmission sleeve 3 rotates, the locking pin 4 on it moves radially (at the center) along the inner drive sleeve 1, thereby positioning the locking pin 4 at the front end of the drive nut and blocking the drive nut from moving forward axially. Here, the forward movement of the drive nut refers to moving away from the drill bit (the aforementioned process of operating the power sleeve 2 and transmission sleeve 3 can keep the inner drive sleeve 1 stationary).

[0024] During forward rotation, the drill bit tail drives the inner drive sleeve 1 to rotate in the forward direction, which in turn drives the drive nut to rotate in the forward direction. However, because the front end of the drive nut is restricted by the retaining pin 4, the drive nut can only rotate in the forward direction, and this rotation drives the anchor bolt to rotate in the forward direction. At this time, the forward rotation of the anchor bolt can be used for operations such as resin extrusion or resin mixing.

[0025] When the anchor rod resin is extruded and solidifies, the drive sleeve 2 resets. During this reset, the drive sleeve 3 rotates in the opposite direction relative to the drive inner sleeve 1. This reverse reset of the drive sleeve 3 causes the locking pin 4 to move radially outward along the drive inner sleeve 1, thus retracting the locking pin 4. At this point, the locking pin 4 no longer restricts the axial displacement of the drive nut. When the drill bit rotates forward again, the drive inner sleeve 1 will drive the drive nut to rotate and move axially forward. The forward displacement of the drive nut can then be used to apply prestress to the anchor rod's pad.

[0026] The rod driving fixture of the present invention can not only drive the rod to rotate forward, but also drive the rod to rotate in reverse. It can also solve the problem of axial movement of the driving nut when the rod rotates forward. After the rod driving ends, the fixture can be separated from the rod by simply withdrawing in a straight line. The disassembly and assembly process is quick and convenient, and there is no need for pole-holding construction, which greatly reduces the construction difficulty.

[0027] Furthermore, such as Figure 6 As shown, the circumferential wall of the power sleeve 2 is provided with at least one spiral groove 6. The transmission component 5 is fixed to the transmission sleeve 3, and one end of the transmission component 5 extends into the spiral groove 6. The number of spiral grooves 6 corresponds to the number of transmission components 5. In this embodiment, the number of transmission components 5 is three, but it can also be two, four, or other integers.

[0028] In use, the power sleeve 2 moves axially along the drive inner sleeve 1. During this process, the transmission sleeve 3 is driven to rotate under the action of the transmission rod and the spiral groove 6. When the transmission sleeve 3 rotates, it can drive the clasp 4 to move radially along the drive inner sleeve 1.

[0029] Furthermore, such as Figure 1 , Figures 3-5As shown, the transmission sleeve 3 is provided with a drive groove 7, the width of the drive groove 7 is adapted to the outer diameter of the clasp 4, and the clasp 4 extends into the drive inner sleeve 1 through the drive groove 7; The drive groove 7 has an arc, and the distance from the lowest point of the drive groove 7 to the axis of the drive inner sleeve 1 gradually increases from the highest point of the drive groove 7 to the axis of the drive inner sleeve 1.

[0030] The pin 4 includes a waist-shaped post 8 and a cylinder 9 connected to the waist-shaped post 8. One end of the waist-shaped post 8 extends into the drive inner sleeve 1, and the other end of the waist-shaped post 8 is located inside the drive groove 7. The width of the waist-shaped post 8 is greater than the width of the drive groove 7. One end of the cylinder 9 passes through the drive groove 7, and the end of the cylinder 9 passing through the drive groove 7 is provided with a horizontally arranged anti-detachment rod 10 (wherein the length of the anti-detachment rod 10 is greater than the width of the drive groove 7).

[0031] Based on the foregoing, when the transmission sleeve 3 rotates relative to the drive inner sleeve 1, the position of the locking pin 4 within the drive groove 7 changes. To illustrate this by increasing the size of the locking pin 4 extending into the drive inner sleeve 1 to limit the drive nut's movement: during the rotation of the transmission sleeve 3, the locking pin 4 changes from the highest point of the drive groove 7 to the lowest point. Under the action of the anti-disengagement rod 10 and the drive groove 7, the locking pin 4 is "pressed" into the drive inner sleeve 1, thereby achieving axial limitation of the drive nut. When the limitation needs to be removed, the operation is reversed; the locking pin 4 is lifted under the action of the anti-disengagement rod 10 and the drive groove 7, and then moves in a direction away from the axis of the drive inner sleeve 1.

[0032] Among them, the drive groove 7 is an arc-shaped groove. Whether the pin 4 is being "pressed in" or lifted, the anti-disengagement rod 10 works with the drive groove 7 to guide it.

[0033] Furthermore, such as Figure 3 As shown, the inner wall of the transmission sleeve 3 is provided with a rotating groove 11, and the outer wall of the driving inner sleeve 1 is provided with a rotating ring platform 12. The transmission sleeve 3 is rotatably connected to the driving inner sleeve 1 through the rotating groove 11 and the rotating ring platform 12.

[0034] The rotational connection between the transmission sleeve 3 and the drive inner sleeve 1 is achieved through the rotational groove 11 and the rotational ring platform 12, which makes the structure simple.

[0035] Furthermore, such as Figure 1 and Figure 4 As shown, the transmission sleeve 3 is provided with a threaded hole that communicates with the interior of the transmission sleeve 3. The axial direction of the threaded hole is perpendicular to the axial direction of the drive inner sleeve 1. The transmission component 5 is a screw. The transmission component 5 is threadedly connected to the threaded hole. One end of the transmission component 5 extends into the spiral groove 6.

[0036] This design facilitates the position adjustment of the transmission component 5 and also makes machining easier.

[0037] Furthermore, the end of the power sleeve 2 is located outside the transmission sleeve 3, and the end of the power sleeve 2 located outside the transmission sleeve 3 is coaxially provided with a power ring plate 13; The inner wall of the power sleeve 2 is provided with a rotation limiting groove 14 along the axial direction, and the outer wall of the drive inner sleeve 1 is provided with a protruding rib 15 that is adapted to the rotation limiting groove 14; (wherein, when the power sleeve 2 is pulled, the power sleeve 2 moves along the axial direction of the drive inner sleeve 1 under the action of the rotation limiting groove 14 and the protruding rib 15) A power rod 16 is connected to the power ring plate 13, and one end of the power rod 16 is connected to the reciprocating telescopic power component; the power rod 16 has an F-shaped cross-section. In this embodiment, there are two power rods 16, and the power ring plate 13 is inserted into the grooves of the two power rods 16. When the power ring plate 13 rotates, it rotates within the grooves of the power rods 16.

[0038] The reciprocating telescopic power component (not shown in the figure) is a cylinder, hydraulic cylinder, or electric telescopic rod.

[0039] The reciprocating telescopic power component can be fixed to the housing of the power end (drill tail). When the drill tail drives the entire tooling to rotate, due to the groove on the power rod 16 (with a gap between the groove and the power ring plate 13), the power ring plate 13 rotates within the circumference formed by the two grooves, thus avoiding interference between the power rod 16 and the rotation of the tooling. When the chuck 4 needs to work, it is only necessary to activate the reciprocating telescopic power component to drive the power sleeve 2 to make linear motion via the power rod 16.

[0040] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A forward and reverse rotating lever driving fixture, characterized in that: It includes a drive inner sleeve, a power sleeve disposed outside the drive inner sleeve, and a transmission sleeve disposed outside the power sleeve; One end of the drive sleeve is connected to the drill bit drive, and the other end of the drive sleeve is connected to the rod drive for driving the rod to rotate forward and backward. The power sleeve can move linearly along the axial direction of the drive inner sleeve; The transmission sleeve is rotatably connected to the drive inner sleeve. The transmission sleeve is provided with at least one locking pin for limiting the drive nut on the rod. One end of the locking pin extends into the drive inner sleeve. The transmission sleeve is connected to the power sleeve through at least one transmission component. When the power sleeve moves axially, it drives the transmission sleeve to rotate through the transmission component. When the transmission sleeve rotates, it drives the locking pin to move radially along the drive inner sleeve.

2. The forward and reverse rotation lever driving fixture according to claim 1, characterized in that: The power sleeve has at least one spiral groove on its circumferential wall. The transmission component is fixed to the transmission sleeve, and one end of the transmission component extends into the spiral groove.

3. The forward and reverse rotation lever driving fixture according to claim 2, characterized in that: The transmission sleeve is provided with a drive groove, the width of which is adapted to the outer diameter of the pin, and the pin extends into the drive inner sleeve through the drive groove; The drive groove has an arc, and the distance from the lowest point of the drive groove to the axis of the drive inner sleeve gradually increases from the distance from the highest point of the drive groove to the axis of the drive inner sleeve.

4. The forward and reverse rotation lever driving fixture according to claim 3, characterized in that: The pin includes a waist-shaped post and a cylinder connected to the waist-shaped post. One end of the waist-shaped post extends into the drive inner sleeve, and the other end of the waist-shaped post is located inside the drive groove. The width of the waist-shaped post is greater than the width of the drive groove. One end of the cylinder passes through the drive groove, and a horizontally arranged anti-detachment rod is provided at the end of the cylinder that passes through the drive groove.

5. The forward and reverse rotation lever drive fixture according to claim 3, characterized in that: The inner wall of the transmission sleeve is provided with a rotating groove, and the outer wall of the drive inner sleeve is provided with a rotating ring platform. The transmission sleeve is rotatably connected to the drive inner sleeve through the rotating groove and the rotating ring platform.

6. The forward and reverse rotation lever drive fixture according to claim 3, characterized in that: The transmission sleeve is provided with a threaded hole that communicates with the inside of the transmission sleeve. The axis of the threaded hole is perpendicular to the axis of the drive inner sleeve. The transmission component is a screw. The transmission component is threadedly connected to the threaded hole. One end of the transmission component extends into the helical groove.

7. The forward and reverse rotation lever driving fixture according to any one of claims 4-6, characterized in that: The end of the power sleeve is located outside the transmission sleeve, and the end of the power sleeve located outside the transmission sleeve is coaxially provided with a power ring plate; The inner wall of the power sleeve is provided with a rotation limiting groove along the axial direction, and the outer wall of the drive inner sleeve is provided with a protruding ridge that fits the rotation limiting groove; a power rod is connected to the power ring plate, and one end of the power rod is connected to the reciprocating telescopic power component; the cross-section of the power rod is F-shaped.

8. The forward and reverse rotation lever drive fixture according to claim 7, characterized in that: The reciprocating telescopic power component is a pneumatic cylinder, a hydraulic cylinder, or an electric telescopic rod.

9. The forward and reverse rotation lever driving fixture according to claim 1, characterized in that: The drive inner sleeve is a circular sleeve, and the drive inner sleeve has a non-circular hole that is adapted to the drive nut.

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