A device for rotation, pulling and locking of an anchor rod

Abstract

The present application relates to the technical fields of tunnel support construction, and aims to solve the problem that the existing anchor rod mechanism does not have a pulling function, and when the pulling force detection is not up to the standard, the anchor rod will be scrapped and needs to be re-anchored, providing a device for anchor rod rotation, pulling and locking, comprising a box body, an input shaft assembly is arranged in the box body, and a driving mechanism is connected to the input shaft assembly; an outer shaft assembly and an inner shaft assembly are assembled on the box body, the outer shaft assembly is sleeved outside the inner shaft assembly, and the front end of the inner shaft assembly is used for being connected with an anchor rod; the outer shaft assembly and the inner shaft assembly can be connected with the input shaft assembly, and the input shaft assembly can drive the outer shaft assembly and the inner shaft assembly alone or simultaneously; a pulling mechanism is further arranged in the box body, the pulling mechanism is connected with the inner shaft assembly, and the pulling mechanism can drive the inner shaft assembly to move axially.

Description

Technical Field

[0001] This invention relates to the field of tunnel support construction technology, and more specifically, to a device for rotating, pulling out, and locking anchor bolts. Background Technology

[0002] Anchor bolt support is a common reinforcement method in tunnel construction. It is used to control the release of stress and deformation of the surrounding rock, thereby increasing the structural safety.

[0003] Existing technologies disclose anchor bolt mechanisms capable of grouting and tightening nuts. However, after the anchor bolt construction is completed, it is necessary to test its pull-out force. Since existing anchor bolt mechanisms do not have a pull-out function, if the pull-out force test fails to meet the standard, the anchor bolt will be scrapped and needs to be re-anchored, which will damage the stability of the support structure. Summary of the Invention

[0004] The present invention aims to provide a device for rotating, pulling and locking anchor bolts, in order to solve the problem that existing anchor bolt mechanisms do not have a pulling function, and when their pulling force test fails to meet the standard, the anchor bolts will be scrapped and need to be re-anchored.

[0005] This invention is achieved using the following technical solution:

[0006] The present invention provides a device for rotating, pulling and locking anchor bolts, comprising a housing, wherein an input shaft assembly is disposed inside the housing, and the input shaft assembly is connected to a drive mechanism;

[0007] The housing is equipped with an outer shaft assembly and an inner shaft assembly. The outer shaft assembly is sleeved on the outside of the inner shaft assembly, and the front end of the inner shaft assembly is used to connect to the anchor rod. The outer shaft assembly and the inner shaft assembly can be connected to the input shaft assembly, and the input shaft assembly can drive the outer shaft assembly and the inner shaft assembly individually or simultaneously.

[0008] The housing is also equipped with a pulling mechanism, which is connected to the inner shaft assembly and can drive the inner shaft assembly to move axially.

[0009] As a preferred technical solution:

[0010] The housing is also equipped with a sensor bracket, on which two sensors are mounted. The sensors are used to identify the position of the inner shaft assembly. The two sensors are a first sensor and a second sensor, with the first sensor located in front of the second sensor.

[0011] As a preferred technical solution:

[0012] The input shaft assembly includes an input shaft, the two ends of which are rotatably connected to the housing.

[0013] The input shaft is equipped with a first clutch, a second clutch, a first spur gear, and a second spur gear. The first clutch is used to establish a connection between the first spur gear and the input shaft, and the input shaft drives the first spur gear to rotate. The second clutch is used to establish a connection between the second spur gear and the input shaft, and the input shaft drives the second spur gear to rotate.

[0014] As a preferred technical solution:

[0015] The driving mechanism is a motor, which is connected to one end of the input shaft.

[0016] As a preferred technical solution:

[0017] The second clutch includes an inner clutch ring, an outer clutch ring, and a clutch plunger. The inner clutch ring is sleeved on the outside of the input shaft, the clutch plunger is sleeved on the inner clutch ring, and the outer clutch ring is sleeved on the outside of the inner clutch ring and the clutch plunger. A key sleeve is provided on the input shaft, and the clutch plunger abuts against the key sleeve.

[0018] The outer ring of the clutch has a hydraulic hole. By supplying oil to the second clutch through the hydraulic hole, the clutch plunger can be extended, thereby pushing the key sleeve into one end of the second spur gear.

[0019] A key sleeve is also provided on the inner side of this end of the second spur gear. After the two key sleeves are connected, a connection is established between the second spur gear and the input shaft.

[0020] As a preferred technical solution:

[0021] The inner side of this end of the second spur gear is also provided with a first spring support ring and a first compression spring. The first spring support ring is sleeved on the input shaft. One end of the first compression spring is connected to the first spring support ring, and the other end abuts against the key sleeve on the input shaft. The first compression spring is used to reset the key sleeve.

[0022] As a preferred technical solution:

[0023] The outer shaft assembly includes an outer shaft on which a third spur gear is mounted, the third spur gear meshing with the first spur gear.

[0024] As a preferred technical solution:

[0025] A sleeve is fitted onto the front end of the outer shaft, and the sleeve is partially fitted onto the outer shaft. A first sliding groove is formed on the outer shaft, and a first limiting post is connected to the sleeve. The first limiting post can slide in the first sliding groove. A third spring support ring is installed at the rear end of the sleeve, and a second spring support ring is installed on the outer shaft. A second compression spring is provided between the third spring support ring and the second spring support ring.

[0026] As a preferred technical solution:

[0027] The outer shaft assembly is further fitted with an outer sleeve, one end of which is connected to the housing.

[0028] As a preferred technical solution:

[0029] The inner shaft assembly includes a fixed inner shaft and an inner shaft drive shaft. The inner shaft drive shaft is connected to the front end of the fixed inner shaft. A fourth spur gear is mounted on the fixed inner shaft, and the second spur gear meshes with the fourth spur gear.

[0030] As a preferred technical solution:

[0031] The fixed inner shaft is provided with a second sliding groove, and the rear end of the inner shaft moving shaft is connected to a second limiting post, which can slide within the second sliding groove.

[0032] As a preferred technical solution:

[0033] The pulling mechanism includes a tensioning cylinder. The outer cylinder of the tensioning cylinder is fixed on the housing. The piston rod of the tensioning cylinder is connected to the inner shaft. The inner shaft moves axially by extending and retracting the piston rod. A spring is installed inside the tensioning cylinder. In the floating state of the tensioning cylinder, the piston rod is pushed outward by the spring.

[0034] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0035] The device of this invention features automatic rotational tensioning (or rotational stirring), pull-out, and nut locking functions during anchor installation, and also includes grouting channels and interfaces. This invention enables fully automated construction of expansion-shell anchors and resin anchors. The automatic pull-out function effectively avoids the problems of anchor scrapping and re-drilling / anchoring due to substandard pull-out force testing after installation, thus improving construction quality and efficiency. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the device for rotating, pulling and locking anchor bolts according to the present invention.

[0037] Figure 2 for Figure 1 Cross-sectional view along the AA direction.

[0038] Figure 3 This is a schematic diagram of the input shaft assembly described in this invention.

[0039] Figure 4 This is a schematic diagram of the structure of the second clutch described in this invention.

[0040] Figure 5 This is a schematic diagram of the structure of the outer shaft assembly described in this invention.

[0041] Figure 6 for Figure 5 Cross-sectional view along the AA direction.

[0042] Figure 7 This is a schematic diagram of the structure of the inner shaft assembly described in this invention.

[0043] Figure 8 for Figure 7 Cross-sectional view along the AA direction.

[0044] Icons: 1. Housing, 2. Motor, 3. Pulling Mechanism, 4. Input Shaft Assembly, 4-1. Input Shaft, 4-2. First Clutch, 4-3. Second Clutch, 4-4. First Spur Gear, 4-5. Second Spur Gear, 4-6. First Spring Support Ring, 4-7. First Compression Spring, 4-3-1. Clutch Inner Ring, 4-3-2. Clutch Outer Ring, 4-3-3. Clutch Plunger, 4-3-4. Inner and Outer Spline Sleeves, 4-3-5. First Rolling Bearing, 4-3-6. Second Rolling Bearing, 4-3-7. First Elastic Retaining Ring, 4-3-8. Second Elastic Retaining Ring, 4-3-9. First O-Ring Seal, 4-3-10. Second O-Ring Seal, 5. Outer Shaft Assembly, 5-1. Outer Shaft, 5-2. Third Spur Gear, 5-3. Sleeve, 5-4. Second Spring Support Ring, 5-5. Second Compression Spring, 5-6. Third Spring Support Ring, 5-7. First Limiting Post, 5-8. Third Rolling Bearing, 5-9. Fourth Rolling Bearing, 5-10. Third Elastic Retaining Ring 5-11 Fourth elastic retaining ring, 5-12 Fifth elastic retaining ring, 6 End cap, 7-1 First through cap, 7-2 Second through cap, 7-3 Third through cap, 7-4 Fourth through cap, 8 Fixing nut, 9 Sensor bracket, 10-1 First sensor, 10-2 Second sensor, 11 Inner shaft assembly, 11-1 Fourth spur gear, 11-2 Fixed inner shaft, 11-3 Inner shaft moving shaft, 11-4 First limiting half ring, 11-5 First pull-out bearing ring, 1 1-6 Grouting extension pipe, 11-7 Connecting nut, 11-8 Inner shaft nut, 11-9 Fifth rolling bearing, 11-10 Sixth rolling bearing, 11-11 Washer, 11-12 Limiting nut, 11-13 Sixth elastic retaining ring, 11-14 Seventh elastic retaining ring, 11-15 Second limiting half ring, 11-16 Second pull-out bearing ring, 11-17 Thrust sliding bearing, 11-18 Eighth elastic retaining ring, 12 Outer sleeve, 13 Hydraulic pipe. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0046] Example 1

[0047] like Figure 1 and Figure 2 As shown, this embodiment proposes a device for rotating, pulling and locking anchor bolts, including a housing 1, on the outside of which a motor 2 is installed.

[0048] An input shaft assembly 4 is provided inside the housing 1. The input shaft assembly 4 is connected to the motor 2. The motor 2 outputs torque and speed to the input shaft assembly 4 through a rotating shaft.

[0049] The housing 1 is equipped with an outer shaft assembly 5 and an inner shaft assembly 11, with the outer shaft assembly 5 sleeved around the inner shaft assembly 11. The outer shaft assembly 5 is connected to the input shaft assembly 4, which transmits rotation to the outer shaft assembly 5; the inner shaft assembly 11 is connected to the input shaft assembly 4, which transmits rotation to the inner shaft assembly 11. The input shaft assembly 4 can drive the outer shaft assembly 5 and the inner shaft assembly 11 individually or simultaneously.

[0050] The front end of the inner shaft assembly 11 can be connected to the anchor rod. The box 1 is also provided with a pulling mechanism 3, which is connected to the inner shaft assembly 11 and can drive the inner shaft assembly 11 to move axially.

[0051] In this embodiment, as Figure 3 As shown, the input shaft assembly 4 includes an input shaft 4-1. Both ends of the input shaft 4-1 are connected to the housing 1 via bearings, and the input shaft 4-1 is rotatable relative to the housing 1. One end of the input shaft 4-1 is connected to the motor 2, which drives the input shaft 4-1 to rotate. The other end of the input shaft 4-1 is connected to a fixing nut 8 to position the input shaft 4-1 and prevent axial movement. A cap 6 is installed at the end of the input shaft 4-1 connected to the fixing nut 8.

[0052] A first clutch 4-2 and a second clutch 4-3 are symmetrically mounted on the input shaft 4-1. The first clutch 4-2 and the second clutch 4-3 are connected to the input shaft 4-1 through bearings. When the input shaft 4-1 rotates, the first clutch 4-2 and the second clutch 4-3 will not rotate accordingly.

[0053] A first spur gear 4-4 and a second spur gear 4-5 are symmetrically mounted on the input shaft 4-1. The first spur gear 4-4 is connected to the first clutch 4-2, and the second spur gear 4-5 is connected to the second clutch 4-3. The first spur gear 4-4 and the second spur gear 4-5 are connected to the input shaft 4-1 via bearings. When the input shaft 4-1 rotates, the first spur gear 4-4 and the second spur gear 4-5 will not rotate accordingly.

[0054] like Figure 4As shown, the second clutch 4-3 includes an inner clutch ring 4-3-1, an outer clutch ring 4-3-2, and a clutch plunger 4-3-3. The inner clutch ring 4-3-1 is a variable diameter shaft with one end having a larger diameter and the other end having a smaller diameter. A step is formed on the outer side of the inner clutch ring 4-3-1.

[0055] The clutch plunger 4-3-3 is fitted onto the smaller diameter end of the clutch inner ring 4-3-1, and the clutch outer ring 4-3-2 is fitted onto the outside of the clutch inner ring 4-3-1 and the clutch plunger 4-3-3. A first O-ring 4-3-9 is provided between the clutch outer ring 4-3-2, the clutch inner ring 4-3-1, and the clutch plunger 4-3-3, and a second O-ring 4-3-10 is provided between the clutch plunger 4-3-3 and the clutch inner ring 4-3-1.

[0056] The clutch inner ring 4-3-1 is sleeved on the outside of the input shaft 4-1, and a first rolling bearing 4-3-5 is provided between the clutch inner ring 4-3-1 and the input shaft 4-1. An inner and outer splined sleeve 4-3-4 is mounted on the outer surface of the input shaft 4-1, and a second rolling bearing 4-3-6 is provided between the clutch plunger 4-3-3 and the inner and outer splined sleeves 4-3-4.

[0057] A first elastic retaining ring 4-3-7 is installed on the inner side of the clutch inner ring 4-3-1. The first elastic retaining ring 4-3-7 is used to limit the first rolling bearing 4-3-5. A second elastic retaining ring 4-3-8 is installed on the inner side of the clutch outer ring 4-3-2. The second elastic retaining ring 4-3-8 is used to limit the clutch inner ring 4-3-1.

[0058] A hydraulic hole is provided on the outer ring 4-3-2 of the clutch. The hydraulic hole is used to connect to the hydraulic pipe 13. The hydraulic pipe 13 can supply oil to the second clutch 4-3, causing the clutch plunger 4-3-3 to extend, thereby pushing the inner and outer spline sleeves 4-3-4 to move. The inner and outer spline sleeves 4-3-4 extend into one end of the second spur gear 4-5. A key sleeve is also provided on the inner side of the end of the second spur gear 4-5. After the two are connected, a connection is established between the second spur gear 4-5 and the input shaft 4-1. The key sleeve can transmit rotation. Therefore, at this time, the second spur gear 4-5 can rotate with the input shaft 4-1.

[0059] The inner side of this end of the second spur gear 4-5 is also provided with a first spring support ring 4-6 and a first compression spring 4-7. The first spring support ring 4-6 is sleeved on the input shaft 4-1. One end of the first compression spring 4-7 is connected to the first spring support ring 4-6, and the other end abuts against the inner and outer spline sleeves 4-3-4. When the inner and outer spline sleeves 4-3-4 extend into the second spur gear 4-5, they compress the first compression spring 4-7. When the hydraulic pipe 13 returns oil, the first compression spring 4-7 pushes out the inner and outer spline sleeves 4-3-4, disconnecting the connection between the second spur gear 4-5 and the input shaft 4-1. At this time, the second spur gear 4-5 no longer rotates with the input shaft 4-1.

[0060] The connection or disconnection between the first spur gear 4-4 and the input shaft 4-1 is controlled by the first clutch 4-2, and the principle is the same as above, so it will not be described again.

[0061] The first spur gear 4-4 and the second spur gear 4-5 can rotate independently or simultaneously, and are controlled by their respective clutches.

[0062] like Figure 5 and Figure 6 As shown, the outer shaft assembly 5 includes an outer shaft 5-1, on which a third spur gear 5-2 is mounted. The third spur gear 5-2 meshes with the first spur gear 4-4, and the first spur gear 4-4 can drive the third spur gear 5-2 to rotate when it rotates.

[0063] The outer shaft 5-1 and the third spur gear 5-2 are connected by a spline, allowing rotational transmission between them. When the third spur gear 5-2 rotates, it drives the outer shaft 5-1 to rotate. The outer shaft 5-1 is connected to the housing 1 via bearings, and the outer shaft 5-1 can rotate relative to the housing 1. A third rolling bearing 5-8 and a fourth rolling bearing 5-9 are respectively provided on both sides of the third spur gear 5-2. The third rolling bearing 5-8 and the fourth rolling bearing 5-9 are mounted on the outer shaft 5-1 and connected to the housing 1. A third elastic retaining ring 5-10 and a fourth elastic retaining ring 5-11 are respectively installed on one side of the third rolling bearing 5-8 and the fourth rolling bearing 5-9. The third elastic retaining ring 5-10 and the fourth elastic retaining ring 5-11 are used to limit the bearing. A fifth elastic retaining ring 5-12 is installed on one side of the third spur gear 5-2. The fifth elastic retaining ring 5-12 is used to limit the third spur gear 5-2.

[0064] A sleeve 5-3 is fitted onto the front end of the outer shaft 5-1, and the sleeve 5-3 is partially fitted onto the outer shaft 5-1. A first sliding groove is formed on the outer shaft 5-1, and a first limiting post 5-7 is connected to the sleeve 5-3. The first limiting post 5-7 can slide within the first sliding groove. A third spring support ring 5-6 is installed at the rear end of the sleeve 5-3, and a second spring support ring 5-4 is installed on the outer shaft 5-1. A second compression spring 5-5 is provided between the third spring support ring 5-6 and the second spring support ring 5-4 to apply an elastic pushing force to the sleeve 5-3. The function of the outer shaft 5-1 is to provide a mounting base for the above components and to transmit torque to the sleeve 5-3.

[0065] The outer shaft assembly 5 is further fitted with an outer sleeve 12, one end of which is connected to the housing 1. The function of the outer sleeve 12 is to transmit the axial force of the entire mechanism to the riveting wall surface, that is, to bear and transmit the pull-out force.

[0066] like Figure 7 and Figure 8 As shown, the inner shaft assembly 11 includes a fixed inner shaft 11-2 and an inner shaft movable shaft 11-3. The inner shaft movable shaft 11-3 is connected to the front end of the fixed inner shaft 11-2, and the two are connected by a spline. The fixed inner shaft 11-2 can transmit rotation to the inner shaft movable shaft 11-3. A third sliding groove is provided on the fixed inner shaft 11-2, and the rear end of the inner shaft movable shaft 11-3 is located in the third sliding groove. The inner shaft movable shaft 11-3 can move axially relative to the fixed inner shaft 11-2.

[0067] A fourth spur gear 11-1 is mounted on the fixed inner shaft 11-2. The second spur gear 4-5 meshes with the fourth spur gear 11-1. When the second spur gear 4-5 rotates, it can drive the fourth spur gear 11-1 to rotate.

[0068] The fixed inner shaft 11-2 and the fourth spur gear 11-1 are connected by a spline, allowing rotational transmission between them. When the fourth spur gear 11-1 rotates, it drives the fixed inner shaft 11-2 to rotate. A fifth rolling bearing 11-9 and a sixth rolling bearing 11-10 are respectively provided on both sides of the fourth spur gear 11-1. The fifth rolling bearing 11-9 and the sixth rolling bearing 11-10 are mounted on the fixed inner shaft 11-2, with the sixth rolling bearing 11-10 mounted at the rear end of the fixed inner shaft 11-2. A washer 11-11 and a limiting nut 11-12 are installed on the outer side of the sixth rolling bearing 11-10. The limiting nut 11-12 prevents axial movement of the fixed inner shaft 11-2. A sixth elastic retaining ring 11-13 is installed on the inner side of the fifth rolling bearing 11-9.

[0069] The front end of the fixed inner shaft 11-2 is connected to the inner shaft moving shaft 11-3 via a spline. The fixed inner shaft 11-2 is provided with a second sliding groove. The rear end of the inner shaft moving shaft 11-3 is connected to a second limiting post. The second limiting post can slide in the second sliding groove, thereby realizing the rotation and axial movement of the inner shaft moving shaft 11-3.

[0070] The pulling mechanism 3 includes a tensioning cylinder. The outer cylinder of the tensioning cylinder is fixed on the housing 1. The piston rod of the tensioning cylinder is connected to the inner shaft moving shaft 11-3. The inner shaft moving shaft 11-3 is driven to move axially by the extension and retraction of the piston rod of the tensioning cylinder.

[0071] Specifically, the rear end of the inner shaft 11-3 is provided with a first pull-out bearing ring 11-5, which is sleeved on the outside of the inner shaft 11-3. The first pull-out bearing ring 11-5 is embedded with a first limiting half ring 11-4, which is embedded on the inner shaft 11-3. A seventh elastic retaining ring 11-14 is provided on the outside of the first limiting half ring 11-4.

[0072] The inner shaft 11-3 is provided with a thrust sliding bearing 11-17. The thrust sliding bearing 11-17 and the second pull-out bearing ring 11-16 are connected. The second pull-out bearing ring 11-16 is sleeved on the outside of the inner shaft 11-3. The second pull-out bearing ring 11-16 has a second limiting half ring 11-15 embedded in it. The second limiting half ring 11-15 is embedded on the inner shaft 11-3. An eighth elastic retaining ring 11-18 is provided on the outside of the second limiting half ring 11-15.

[0073] The piston rod of the tensioning cylinder is connected at both ends to the thrust sliding bearing 11-17 and the first tension bearing ring 11-5, respectively.

[0074] The inner shaft 11-3 is equipped with a grouting extension pipe 11-6, and part of the grouting extension pipe 11-6 extends out of the rear end of the inner shaft 11-3.

[0075] The connecting nut 11-7 is connected to the front end of the inner shaft moving shaft 11-3 via the inner shaft nut 11-8. The connecting nut 11-7 is used to connect with the anchor rod and lock the anchor rod in place. Different specifications of connecting nuts 11-7 can be replaced according to the actual situation.

[0076] In this embodiment, a fourth through cover 7-4 and a sealing ring are installed at the connection between the outer shaft assembly 5 and the housing 1. A first through cover 7-1 and a second through cover 7-2 and a sealing ring are installed at the connection between the inner shaft assembly 11 and the housing 1, and a third through cover 7-3 and a sealing ring are installed at the connection between the inner shaft assembly 11 and the pulling mechanism 3.

[0077] The housing 1 also houses a sensor bracket 9, on which two sensors are mounted. These sensors are used to identify the position of the first pull-out bearing ring 11-5 to determine the position and orientation of the inner shaft moving shaft 11-3. The two sensors are a first sensor 10-1 and a second sensor 10-2, with the first sensor 10-1 located in front of the second sensor 10-2. The sensors are not limited to identifying the position of the first pull-out bearing ring 11-5; they can also identify the positions of other components on the inner shaft assembly 11.

[0078] The device for rotating, pulling and locking anchor bolts described in this invention is mounted on the operating arm of the anchor bolt trolley.

[0079] The working process of this invention is roughly as follows (taking an expansion anchor bolt as an example):

[0080] Step 1: Drill holes in the rock wall using rock drilling equipment, clean the holes, and prepare to install anchor bolts;

[0081] Step 2: The feed cylinder pushes the entire device forward, so that the front end of the inner shaft assembly 11 presses against the tail end of the anchor rod. The piston rod of the tension cylinder (in a floating state) is pushed until the second sensor 10-2 detects the first pull-out bearing ring 11-5, and the feed cylinder stops feeding.

[0082] Step 3: Oil supply connects the second clutch 4-3 with the second spur gear 4-5, and the motor rotates forward. While the fixed inner shaft 11-2 drives the inner shaft moving shaft 11-3 to rotate, the inner shaft moving shaft 11-3 moves forward under the action of the tension cylinder spring force, connecting the connecting nut 11-7 to the anchor rod threaded connection, until the first sensor 10-1 detects the first pull-out bearing ring 11-5, and the motor stops rotating.

[0083] Step 4: The entire device rotates on the robotic arm, pulling the anchor rod out of the anchor rod magazine. The tensioning cylinder maintains the set pressure with oil in the rear chamber. The feed cylinder pushes the entire device forward, allowing the anchor rod to enter the anchor rod hole and reach the predetermined position.

[0084] Step 5: Supply oil to the two clutches, the motor rotates forward, causing the fixed inner shaft 11-2 and outer shaft 5-1 to rotate simultaneously until the anchor head of the anchor rod expands;

[0085] Step Six: Oil is supplied to the front chamber of the tensioning cylinder, the piston rod retracts, and the anchor rod is tensioned, pulling the anchor rod to the set preload.

[0086] Step 7: Supply oil to connect the first clutch 4-2 with the first spur gear 4-4, the motor rotates forward, the outer shaft 5-1 drives the sleeve 5-3 to rotate and tighten the anchor nut to the predetermined torque, and the motor stops rotating;

[0087] Step 8: Connect the grouting equipment through the grouting extension pipe 11-6 to perform grouting;

[0088] Step 9: The feed cylinder retracts the entire device until the first sensor 10-1 identifies the first pull-out bearing ring 11-5;

[0089] Step 10: Supply oil to connect the second clutch 4-3 with the second spur gear 4-5, the motor reverses, and the fixed inner shaft 11-2 reverses to exit the anchor rod until the second sensor 10-2 detects the first pull-out bearing ring 11-5;

[0090] Step 11: The feed cylinder retracts the entire device. After the first sensor 10-1 detects the first pull-out bearing ring 11-5, the motor stops rotating, and the entire device continues to retract to the initial position.

[0091] This invention enables fully automated construction, realizing the functions of jacking, rotating, locking, and pulling of anchor bolts, making construction convenient and improving work efficiency.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for rotating, pulling, and locking anchor bolts, characterized in that: The system includes a housing, inside which an input shaft assembly is provided, and the input shaft assembly is connected to a drive mechanism. The housing is equipped with an outer shaft assembly and an inner shaft assembly. The outer shaft assembly is sleeved on the outside of the inner shaft assembly, and the front end of the inner shaft assembly is used to connect to the anchor rod. Both the outer shaft assembly and the inner shaft assembly are connected to the input shaft assembly, and the input shaft assembly can drive the outer shaft assembly and the inner shaft assembly individually or simultaneously. The housing is also equipped with a pulling mechanism, which is connected to the inner shaft assembly and can drive the inner shaft assembly to move axially. The input shaft assembly includes an input shaft, the two ends of which are rotatably connected to the housing. The input shaft is equipped with a first clutch, a second clutch, a first spur gear, and a second spur gear. The first clutch is used to establish a connection between the first spur gear and the input shaft, and the input shaft drives the first spur gear to rotate. The second clutch is used to establish a connection between the second spur gear and the input shaft, and the input shaft drives the second spur gear to rotate. The second clutch includes an inner clutch ring, an outer clutch ring, and a clutch plunger. The inner clutch ring is sleeved on the outside of the input shaft, the clutch plunger is sleeved on the inner clutch ring, and the outer clutch ring is sleeved on the outside of the inner clutch ring and the clutch plunger. The input shaft is provided with inner and outer spline sleeves, and the clutch plunger is connected to the inner and outer spline sleeves through a second rolling bearing. The outer ring of the clutch has a hydraulic hole. By supplying oil to the second clutch through the hydraulic hole, the clutch plunger can be extended, thereby pushing the inner and outer spline sleeves into one end of the second spur gear. A key sleeve is also provided on the inner side of this end of the second spur gear. After the two are connected, a connection is established between the second spur gear and the input shaft. The inner side of this end of the second spur gear is also provided with a first spring support ring and a first compression spring. The first spring support ring is sleeved on the input shaft. One end of the first compression spring is connected to the first spring support ring, and the other end abuts against the inner and outer spline sleeves on the input shaft. The first compression spring is used to reset the inner and outer spline sleeves. The outer shaft assembly includes an outer shaft and a sleeve, and a third spur gear is mounted on the outer shaft, which meshes with the first spur gear. The inner shaft assembly includes a fixed inner shaft and an inner shaft drive shaft. The inner shaft drive shaft is connected to the front end of the fixed inner shaft. A fourth spur gear is mounted on the fixed inner shaft, and the second spur gear meshes with the fourth spur gear.

2. The device for rotating, pulling, and locking anchor bolts according to claim 1, characterized in that: The housing is also equipped with a sensor bracket, on which two sensors are mounted. The sensors are used to identify the position of the inner shaft assembly. The two sensors are a first sensor and a second sensor, with the first sensor located in front of the second sensor.

3. The device for rotating, pulling, and locking anchor bolts according to claim 1, characterized in that: The sleeve is fitted onto the front end of the outer shaft, and the sleeve is partially fitted onto the outer shaft. A first sliding groove is formed on the outer shaft, and a first limiting post is connected to the sleeve. The first limiting post can slide in the first sliding groove. A third spring support ring is installed at the rear end of the sleeve, and a second spring support ring is installed on the outer shaft. A second compression spring is provided between the third spring support ring and the second spring support ring.

4. The device for rotating, pulling, and locking anchor bolts according to claim 3, characterized in that: The outer shaft assembly is further fitted with an outer sleeve, one end of which is connected to the housing.

5. The device for rotating, pulling, and locking anchor bolts according to claim 4, characterized in that: The pulling mechanism includes a tensioning cylinder. The outer cylinder of the tensioning cylinder is fixed on the housing. The piston rod of the tensioning cylinder is connected to the inner shaft. The inner shaft moves axially by extending and retracting the piston rod. A spring is installed inside the tensioning cylinder. In the floating state of the tensioning cylinder, the piston rod is pushed outward by the spring.

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