A drill bushing assembly and automatic anchor protection operation drill box

Abstract

The application provides a drill bushing assembly and a drill box for automatic anchor support operation, and belongs to the technical field of roadway support. The drill box comprises a drill box body, a drill box motor, a motor transmission shaft, a damping piece, a damping type anchor rod, a drill bushing and a supporting column. The drill box motor and a liquid distribution plate are installed on the drill box body, the drill bushing is connected with the motor transmission shaft to transmit torque, the tray clamping claws are symmetrically assembled on the drill box body in a detachable manner to limit the anchor rod tray, the drill bushing has a damping piece escape hole in the form of double inclined surfaces, the damping piece can escape through the channel during anchoring, and the drill bushing adopts a multi-surface limiting form to make the drill rod more convenient to disassemble. The drill box improves the reliability, prolongs the service life, reduces the labor intensity of automatic anchor support operation, improves the safety and efficiency of operation, and promotes the automation and standardization process of anchor support operation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of roadway support, and specifically discloses a drill sleeve assembly and a drill box for automatic anchor support operation. BACKGROUND

[0002] The underground mining method is a main mining method for coal resources in China, and the support working face is a working place where mine operating personnel are densely distributed, and the support work is immediately carried out after the roadway is excavated, and the operation environment is also relatively poor. The traditional support process mainly relies on manual drilling and anchoring, and has defects such as single function of anchoring equipment, poor matching coordination, low operation efficiency, many employees, poor safety, etc., so that serious imbalance between mining and excavation is easily caused.

[0003] At present, intelligent anchor support machines begin to be developed and gradually replace traditional anchor rod machines, and it is found through experiments that the following problems are prone to occur when the ordinary drill box is used for automatic anchor support operation, causing the drill box to malfunction.

[0004] (1) The anchor rod commonly used in the current coal mine is a damping type anchor rod, and a damping part is assembled at the tail of the anchor rod. Whether the anchor rod torque is fastened in place is judged by whether the damping part is twisted off during the fastening of the anchor rod. The twisted damping part falls into the drill sleeve. With the increase of the number of operations, the accumulated damping parts will affect the normal use function of the drill box.

[0005] (2) According to the anchor rod support technical specification standard, the direction of the anchor rod tray completed operation must be consistent. During the stirring and fastening of the anchor rod by the ordinary drill box, the tray will rotate with the anchor rod, and the direction is randomly distributed. The workers need to correct the direction of the tray one by one, and the labor operation amount is large.

[0006] (3) The inner surface of the drill sleeve of the ordinary drill box is designed as an internal hexagon to limit the anchor rod according to the hexagonal shape of the anchor rod. However, during the replacement of the drill rod, the limiting surface must be aligned before it can be installed. Due to the low illumination environment in the mine, the replacement process takes a long time. SUMMARY

[0007] The application provides a drill sleeve assembly and a drill box for automatic anchor support operation to improve the problems in the background art.

[0008] The application provides a drill sleeve assembly for connecting a motor transmission shaft and a damping type anchor rod. A limiting hole for inserting a nut at the bottom end of the damping type anchor rod is arranged at the top end, and damping part ejection holes for allowing damping parts to be inserted and fixedly connected with the nut at the bottom end of the damping type anchor rod are symmetrically arranged on both sides. The damping part ejection holes are in communication with the limiting hole, and a damping part ejection inclined surface inclined toward the bottom end is arranged.

[0009] Further, the drill sleeve assembly comprises a drill sleeve and a stopper; the limiting hole and the damping element dismounting hole are arranged on the drill sleeve, and the bottom end of the drill sleeve is further provided with a stopper mounting hole in communication with the limiting hole and the damping element dismounting hole; the top surface and the bottom surface of the damping element dismounting hole are both inclined surfaces; the top surface of the stopper is symmetrically provided with a stopper inclined surface, the stopper is inserted into the stopper mounting hole, and the stopper inclined surface and the bottom surface of the damping element dismounting hole form a damping element dismounting inclined surface.

[0010] Further, the drill sleeve is provided with a stopper assembly hole, and the stopper assembly passes through the stopper assembly hole to press the stopper.

[0011] Further, the limiting hole of the drill sleeve is a sawtooth hole, the number of teeth is twice the number of teeth of the nut of the damping anchor rod, and the sawtooth angle is equal to the sawtooth angle of the nut of the damping anchor rod.

[0012] The application further provides a drill box for automatic anchor protection operation, comprising a drill box body, a drill box motor, a motor transmission shaft, a damping element and a damping anchor rod; the drill box motor and the motor transmission shaft are installed on the drill box body, and the drill box motor drives the motor transmission shaft to rotate; the motor transmission shaft and the damping anchor rod are connected through the above drill sleeve assembly, and the sawtooth of the nut of the damping anchor rod is embedded in the sawtooth of the limiting hole.

[0013] Further, the nut on the damping anchor rod is a hexagonal nut, and the limiting hole of the drill sleeve is a twelve-sided sawtooth hole.

[0014] Further, the damping anchor rod is rotatably installed with an anchor rod tray; two tray clamping claws are symmetrically arranged on the two sides of the drill box body.

[0015] Further, the tray clamping claw is detachably connected with the drill box body.

[0016] Further, the drill box motor is a hydraulic motor, and a liquid distribution plate is arranged on the drill box body, and the liquid distribution plate is designed with a hydraulic motor liquid inlet and outlet.

[0017] Compared with the prior art, the application has the following beneficial effects.

[0018] 1. The application is matched in the automatic anchor protection machine, the design of the damping element dismounting hole on the drill sleeve avoids the problem that the damping element falls into the drill sleeve and affects the use performance of the drill box, and improves the reliability of the drill box in the automatic anchor protection operation process.

[0019] 2. The limiting hole of the drill sleeve uses double limiting surfaces to limit the damping anchor rod, can realize multi-angle installation of the damping anchor rod, makes the disassembly and assembly of the drill rod more convenient, improves the maintenance and normal working efficiency of the anchor protection operation, and reduces the labor operation amount of workers.

[0020] 3, the additional detachable tray clamping paw can ensure that the installed multiple trays are consistent in direction, and ensure that the structure can be replaced and matched according to the actual situation, promote the process of few people and automation of anchor protection work, and have beneficial effects on the standardized construction of mine anchor protection work.

[0021] In summary, the above-mentioned drill sleeve assembly and automatic anchor protection drilling box can greatly improve the anchor protection efficiency in coal mine, and the efficiency is expected to be 3-4 times higher than that of the traditional drill box. It is an ideal equipment for realizing fast, safe and efficient roadway support in China at present. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a structure diagram of the drill sleeve assembly;

[0024] Figure 2 It is an explosion diagram of the drill sleeve assembly;

[0025] Figure 3 It is a schematic diagram of the damping member escaping from the drill sleeve assembly;

[0026] Figure 4 It is a structure diagram of the automatic anchor protection drilling box;

[0027] Figure 5 It is an explosion diagram of the automatic anchor protection drilling box;

[0028] Figure 6 It is a state diagram of the tray clamping paw not installed on the drill box body;

[0029] Figure 7 It is a state diagram of the tray clamping paw installed on the drill box body;

[0030] Figure 8 It is a cooperation diagram of the nut and the limiting hole.

[0031] Icon: 1-drill box body, 2-drill box motor, 3-liquid distribution plate, 4-tray clamping paw, 5-motor transmission shaft, 6-abutment column, 7-drill sleeve, 7.1-limiting hole, 7.2-damping member escape hole, 7.3-abutment column assembly hole, 8-anchor rod tray, 9-damping anchor rod, 9.1-nut, 10-damping member, 11-abutment column assembly, 12-tray clamping paw assembly hole, 13-damping member escape path. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Embodiment 1

[0034] The present embodiment provides a drill sleeve assembly for connecting a motor transmission shaft 5 and a damping anchor rod 9, the top end is provided with a limiting hole 7.1 for inserting the nut 9.1 at the bottom end of the damping anchor rod 9, and the two sides are symmetrically provided with damping piece escape holes 7.2 for inserting and fixedly connecting the damping piece 10 with the nut 9.1 at the bottom end of the damping anchor rod 9; the damping piece escape hole 7.2 is in communication with the limiting hole 7.1, and is provided with a damping piece escape inclined surface inclined to the bottom end.

[0035] Further, the above-mentioned drill sleeve assembly comprises a drill sleeve 7 and a stopper 6; the limiting hole 7.1 and the damping piece escape hole 7.2 are both arranged on the drill sleeve 7, and the bottom end of the drill sleeve 7 is further provided with a stopper mounting hole in communication with the limiting hole 7.1 and the damping piece escape hole 7.2; the top surface and the bottom surface of the damping piece escape hole 7.2 are both inclined surfaces; the top surface of the stopper 6 is symmetrically provided with a stopper inclined surface, the stopper 6 is inserted into the stopper mounting hole, and the stopper inclined surface and the bottom surface of the damping piece escape hole 7.2 form the damping piece escape inclined surface.

[0036] Further, the drill sleeve 7 is provided with a stopper assembly hole 7.3, the stopper 6 is assembled in the stopper assembly hole 7.3 position by using a jackscrew, and a stopper assembly 11 (such as a pin or a bolt) passes through the stopper assembly hole 7.3 to press the stopper 6.

[0037] Further, the limiting hole 7.1 of the drill sleeve 7 is a sawtooth hole, the number of teeth is twice the number of teeth of the nut 9.1 on the damping anchor rod, and the sawtooth angle is equal to the sawtooth angle of the nut 9.1 on the damping anchor rod.

[0038] Embodiment 2

[0039] The present embodiment provides a drill box for automatic anchor protection operation, comprising a drill box body 1, a drill box motor 2, a motor transmission shaft 5, a damping piece 10 and a damping anchor rod 9; the drill box motor 2 and the motor transmission shaft 5 are installed on the drill box body 1, and the drill box motor 2 drives the motor transmission shaft 5 to rotate; the motor transmission shaft 5 and the damping anchor rod 9 are connected through the above-mentioned drill sleeve assembly, and the sawtooth of the nut 9.1 on the damping anchor rod is embedded in the sawtooth of the limiting hole 7.1.

[0040] Further, the nut 9.1 on the damping anchor rod 9 is a hexagonal nut, and the limiting hole 7.1 of the drill sleeve 7 is a twelve-sided sawtooth hole.

[0041] Further, the damping anchor rod 9 is rotatably installed with the anchor rod tray 8; the two sides of the drill box body 1 are symmetrically provided with two tray clamping claws 4 to ensure that the anchor rod tray 8 can enter between the two tray clamping claws 4 while not relative rotating with the damping anchor rod 9.

[0042] Considering the universality of coping with different working conditions, the tray clamping claw 4 is detachably connected with the drill box body 1. The tray clamping claw 4 and the drill box body 1 are both provided with a tray clamping claw assembly hole 12, which is fastened by a bolt to ensure the simplicity and quickness of disassembly and assembly.

[0043] Further, the drill box motor 2 is a hydraulic motor, and the drill box body 1 is provided with a liquid distribution plate 3, and the liquid distribution plate 3 is designed with a hydraulic motor liquid inlet and outlet.

[0044] The working principle of the above automatic anchor protection operation drill box is as follows.

[0045] The anchor rod commonly used in mine anchoring is the damping anchor rod 9, which is externally sleeved with the anchor rod tray 8 and internally provided with a damping member 14. The anchor rod tray 8 transmits the thrust generated by the nut locking torque to the top, thereby generating the initial anchoring force. The damping member 10 ensures that the nut locking torque reaches the specified requirement. Therefore, during the anchoring operation, the multiple anchor rod trays 8 need to be kept parallel after installation, and the damping member 10 must be removed after the damping anchor rod 9 is fastened in place to avoid affecting the performance of the drill box 1 after multiple operations.

[0046] The tray clamping claw 4 is symmetrically installed on the drill box body 1, and the distance S between them is equal to the length of the corresponding anchor rod tray 8. The rotary power provided by the drill box motor 2 is transmitted to the drill sleeve 7 through the motor transmission shaft 5, and the drill sleeve 7 drives the damping anchor rod 9 to rotate, so that the damping anchor rod 9 is stirred in the hole. In this process, the tray clamping claw 4 can ensure that the anchor rod tray 8 does not move relative to the anchor rod 9, thereby ensuring the standardization of the installation of the anchor rod tray 8.

[0047] The drill sleeve 7 and the damping anchor rod 9 transmit torque power in a surface limiting manner. After the damping anchor rod 9 is fastened, the drill sleeve 7 drives the nut 9.1 to continue rotating while the nut 9.1 moves upward along the damping anchor rod 9. The damping member 10 is twisted off by the damping member ejection hole 7.2, and under the action of centrifugal force, the damping member 10 can be easily thrown out along the damping member ejection slope, thereby ensuring the performance of the drill box.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A drill box for automatic anchor protection operation, comprising a drill box body, a drill box motor, a motor transmission shaft, a damping member and a damping anchor rod; The drill box motor and the motor transmission shaft are installed on the drill box body, and the drill box motor drives the motor transmission shaft to rotate; characterized in that The motor transmission shaft and the damping anchor rod are connected through a drill sleeve assembly, The top end of the drill sleeve assembly is provided with a limiting hole for inserting a nut at the bottom end of the damping anchor rod, and both sides are symmetrically provided with damping member escape holes for fixing connection of the damping member inserted into the nut at the bottom end of the damping anchor rod; The damping member escape hole is in communication with the limiting hole, and is provided with a damping member escape inclined surface inclined to the bottom end; The serrations of the nut on the damping anchor rod are embedded in the serrations of the limiting hole; An anchor rod tray is rotatably installed on the damping anchor rod; Two tray clamping claws are symmetrically arranged on both sides of the drill box body; The drill sleeve assembly comprises a drill sleeve and a stop column; The limiting hole and the damping member escape hole are arranged on the drill sleeve, and the bottom end of the drill sleeve is further provided with a stop column mounting hole in communication with the limiting hole and the damping member escape hole; The top surface and the bottom surface of the damping member escape hole are both inclined surfaces; The top surface of the stop column is symmetrically provided with a stop column inclined surface, the stop column is inserted into the stop column mounting hole, and the stop column inclined surface and the bottom surface of the damping member escape hole form the damping member escape inclined surface.

2. The automatic anchor handling drilling rig of claim 1, wherein, The drill sleeve is provided with a stop column assembly hole, and the stop column assembly passes through the stop column assembly hole to press the stop column.

3. The automatic anchor handling drilling rig of claim 2, wherein, The limiting hole of the drill sleeve is a serrated hole, the number of teeth is twice the number of teeth of the nut on the damping anchor rod, and the serration angle is equal to the serration angle of the nut on the damping anchor rod.

4. The automatic anchor handling drill box of claim 1, wherein, The nut on the damping anchor rod is a hexagonal nut, and the limiting hole of the drill sleeve is a twelve-sided serrated hole.

5. The automatic anchor handling drilling rig of claim 1, wherein, The tray clamping claws are detachably connected with the drill box body.

6. The automatic anchor handling drilling rig of claim 1, wherein, The drill box motor is a hydraulic motor, and the drill box body is provided with a liquid distribution plate, and the liquid distribution plate is designed with hydraulic motor liquid inlet and outlet.

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