Standard positioning device for controlling exposure of anchor cable

Abstract

The utility model relates to the technical field of underground coal mine construction, in particular to a standard positioning device for controlling anchor cable exposure, which comprises a stirring sleeve, a movable sleeve is slidably sleeved on the outer side of the stirring sleeve along the length direction of the stirring sleeve, and a screw extending along the radial direction of the stirring sleeve is fixedly mounted on the outer side of the stirring sleeve. A positioning sleeve is slidably installed on the screw rod in the length direction of the screw rod, a strip-shaped hole allowing the positioning sleeve to penetrate through is formed in the side wall of the movable sleeve, a plurality of tooth grooves which are evenly formed in the length direction of the movable sleeve at intervals are formed in the side wall of the strip-shaped hole, and clamping blocks matched with the tooth grooves are fixedly installed on the positioning sleeve; and after the clamping block is separated from the tooth groove, the movable sleeve can slide along the stirring sleeve so as to adjust the exposed size of the anchor cable.

Description

Technical Field

[0001] The utility model relates to the technical field of underground coal mine construction, in particular to a standard positioning device for controlling the exposure of anchor cables. Background Art

[0002] In the daily anchor cable support construction process, due to the fast solidification speed of the anchoring agent, the workers completed the construction in one go, and there was no time and opportunity to measure the exposed length. The control was completely dependent on the workers' experience, resulting in the exposed length of the anchor cable often being outside the specified range (150-250mm), and ultimately resulting in a low degree of standardization. In order to prevent the anchor cable from being injected into the depth insufficient, the workers sometimes intentionally deepened the drilling depth, resulting in the anchor cable anchoring length failing to reach the specified value.

[0003] In the prior art, the utility model patent with application number CN201820687382.3 discloses an anchor cable construction auxiliary device, in which the exposed control part of the anchor cable includes an anchor cable connector, and a limit steel pipe extending upward is fixed to the top of the anchor cable connector, and a non-slip fastening screw is threadedly connected to the limit steel pipe. When installing the anchor cable, the modified anchor cable connector is used to push the anchor cable rope into the drill hole through the drilling rig until the limit steel pipe on the anchor cable connector contacts the top plate, so that the exposed length of the anchor cable meets the standard.

[0004] However, the length of the limiting steel pipe of the above-mentioned anchor cable construction auxiliary device is fixed, and the exposed length of the anchor cable installed using the above-mentioned anchor cable construction auxiliary device cannot be adjusted, thereby failing to meet different construction requirements. Utility Model Content

[0005] The utility model aims to provide a standard positioning device for controlling the exposed size of anchor cables, so as to facilitate the adjustment of the exposed size of anchor cables during installation, so as to solve the defects mentioned in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A standard positioning device for controlling the exposure of anchor cables comprises a stirring sleeve, a hexagonal shaft head is provided at the lower end of the stirring sleeve, a movable sleeve is slidably sleeved on the outer side of the stirring sleeve along its length direction, a screw extending radially is fixedly installed on the outer side of the stirring sleeve, a positioning sleeve is slidably installed on the screw along its length direction, a strip hole for the positioning sleeve to pass through is provided on the side wall of the movable sleeve, a plurality of tooth grooves are evenly spaced along the length direction of the movable sleeve are provided on the side wall of the strip hole, a block matching the tooth grooves is fixedly installed on the positioning sleeve, a spring is sleeved on the screw for pushing the positioning sleeve to move in a direction away from the stirring sleeve, and a knob is also screwed on the screw for pushing the positioning sleeve to move in a direction close to the stirring sleeve.

[0008] As a further improvement, when one end of the movable sleeve abuts against the outer wall of the stirring sleeve, the projection of the block along the length direction of the stirring sleeve coincides with the tooth groove.

[0009] As a further improvement, one end of the movable sleeve is provided with a through hole for the screw to pass through, the screw is provided with a guide groove extending along its length direction, and the inner wall of the through hole is provided with a protrusion matching the guide groove.

[0010] As a further improvement, a sliding pin extending in the radial direction is fixedly mounted on the outer side of the stirring sleeve, and a long strip-shaped notch matching the sliding pin is provided on the side wall of the movable sleeve.

[0011] As a further improvement, the outer wall of the stirring sleeve is provided with scale lines matching the lower end of the movable sleeve.

[0012] As a further improvement, a baffle is fixedly mounted on the outer side of the upper end of the movable sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The present application rotates the knob to move it away from the mixing sleeve, and then the spring drives the positioning sleeve to follow the rotating knob to move and disengage the block from the tooth groove. Then the movable sleeve can be slid along the mixing sleeve to adjust the exposed size of the anchor cable to meet different construction requirements;

[0015] 2. When installing the anchor cable in this application, one end of the anchor cable is passed through the movable sleeve and inserted into the bottom of the inner cavity of the mixing sleeve, and the anchor cable is pushed into the drill hole on the top wall of the tunnel by the anchor drill until the upper end of the movable sleeve contacts the top wall of the tunnel, so that the anchor cable is installed in place and the exposed size of the anchor cable is kept consistent, thereby improving the uniformity of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure on the back of the device;

[0018] Figure 3 for Figure 1 A cross-sectional schematic diagram of

[0019] Figure 4 for Figure 3 This is a partial enlarged view of the middle part I;

[0020] Figure 5 This is a schematic diagram of the structure inside the stirring sleeve of an embodiment of the utility model;

[0021] Figure 6 for Figure 1 Explosion diagram of

[0022] Figure 7 It is a structural schematic diagram of a positioning sleeve according to an embodiment of the utility model.

[0023] The meaning of each number in the figure is:

[0024] 1-stirring sleeve; 2-hexagonal shaft head; 3-protrusion; 4-movable sleeve; 5-sliding pin; 6-slot; 7-screw; 8-fixing column; 9-positioning sleeve; 10-through hole; 11-strip hole; 12-tooth groove; 13-block; 14-spring; 15-knob; 16-scale line; 17-baffle; 18-guide groove; 19-protrusion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 7 As shown, the standard positioning device for controlling the exposure of the anchor cable includes a cylindrical stirring sleeve 1, and a hexagonal shaft head 2 is welded to the lower end of the stirring sleeve 1. The hexagonal shaft head 2 matches the hexagonal shaft sleeve of the anchor drilling rig; Figure 5 As shown, the upper end of the stirring sleeve 1 is opened, and a protrusion 3 for clamping the anchor cable is provided on the peripheral wall of the inner cavity of the stirring sleeve 1.

[0027] A movable sleeve 4 is slidably mounted on the outer side of the stirring sleeve 1 along its length direction. Figure 2 As shown, in order to improve the sliding stability of the movable sleeve 4 along the stirring sleeve 1, a sliding pin 5 extending radially thereof is embedded on the outer side of the stirring sleeve 1, and a long strip-shaped slot 6 matching the sliding pin 5 is provided on the side wall of the movable sleeve 4. The length direction of the slot 6 extends in the same direction as the stirring sleeve 1. When the movable sleeve 4 slides along the stirring sleeve 1, it drives the sliding pin 5 to move in the slot 6, and at the same time, relative rotation between the movable sleeve 4 and the stirring sleeve 1 can be avoided.

[0028] A screw 7 extending radially is fixedly mounted on the outer side of the stirring sleeve 1. Figure 7As shown, one end of the screw 7 is integrally formed with a coaxially arranged fixing column 8, which is embedded in the outer wall of the stirring sleeve 1, and the other end of the screw 7 is provided with a bolt head; a positioning sleeve 9 is slidably installed on the screw 7 along its length direction, and the positioning sleeve 9 is in the shape of a circular tube coaxially arranged with the screw 7. The end portion of the positioning sleeve 9 away from the stirring sleeve 1 is contracted inwardly to form a through hole 10 for the screw 7 to pass through, and the screw 7 is provided with a guide groove 18 extending along its length direction. The guide groove 18 is provided with two and respectively located on opposite sides of the screw 7, and a protrusion 19 matching the guide groove 18 is integrally formed on the inner wall of the through hole 10, thereby improving the stability of the cooperation between the stirring sleeve 1 and the screw 7.

[0029] like Figure 1 and Figure 4 As shown, a strip hole 11 is provided on the side wall of the movable sleeve 4 for the positioning sleeve 9 to pass through, and the length direction of the strip hole 11 extends in the same direction as the stirring sleeve 1, and a plurality of tooth grooves 12 are evenly spaced along the length direction of the movable sleeve 4 on both side walls of the strip hole 11, and the tooth grooves 12 penetrate the side wall of the movable sleeve 4 in a direction parallel to the screw 7, and blocks 13 matching the tooth grooves 12 are welded on opposite sides of the positioning sleeve 9, and a spring 14 for pushing the positioning sleeve 9 to move away from the stirring sleeve 1 is sleeved on the screw 7, one end of the spring 14 abuts against the outer wall of the stirring sleeve 1, and the other end extends into the interior of the positioning sleeve 9 and abuts against the inner wall of the positioning sleeve 9 located at the edge of the through hole 10, and a knob 15 for pushing the positioning sleeve 9 to move toward the stirring sleeve 1 is also screwed on the screw 7 between the positioning sleeve 9 and the bolt head.

[0030] When one end of the movable sleeve 4 abuts against the outer wall of the stirring sleeve 1 , the projection of the block 13 along the length direction of the stirring sleeve 1 coincides with the tooth groove 12 .

[0031] When in use, the knob 15 is rotated in a specific direction to move it away from the stirring sleeve 1, and then the thrust of the spring 14 drives the positioning sleeve 9 to follow the rotating knob 15 to move away from the stirring sleeve 1, and the positioning sleeve 9 drives the block 13 to disengage from the tooth groove 12, thereby releasing the lock on the movable sleeve 4; then the staff can slide the movable sleeve 4 along the stirring sleeve 1 according to the construction requirements to adjust the exposed size of the anchor cable, and the exposed size of the anchor cable is specifically the distance between the upper end of the movable sleeve 4 and the bottom wall of the inner cavity of the stirring sleeve 1; after adjusting the movable sleeve 4 to the desired position, the knob 15 is rotated in the opposite direction to move it towards the stirring sleeve 1, and then the movable sleeve 4 is moved to the desired position. The knob 15 pushes the positioning sleeve 9 to move with it in the direction close to the mixing sleeve 1 until the positioning sleeve 9 abuts against the outer wall of the mixing sleeve 1, and at the same time, the positioning sleeve 9 drives the block 13 to be stuck in the aligned tooth groove 12 at this time, thereby locking the movable sleeve 4 and preventing it from sliding up and down along the mixing sleeve 1; one end of the anchor cable passes through the movable sleeve 4 and is inserted into the bottom of the inner cavity of the mixing sleeve 1, and the end of the anchor cable is clamped by the protrusion 3 in the mixing sleeve 1, and the anchor cable is pushed into the drill hole of the top wall of the tunnel by the anchor drilling rig until the upper end of the movable sleeve 4 contacts the top wall of the tunnel, so that the anchor cable is installed in place and the exposed size of the anchor cable is kept consistent, thereby improving the uniformity of construction.

[0032] In order to more intuitively observe the position of the movable sleeve 4, the outer wall of the stirring sleeve 1 is provided with a scale line 16 that matches the lower end of the movable sleeve 4. Specifically, when the block 13 is inserted into the tooth groove 12 at the lower end, the lower end of the stirring sleeve 1 coincides with the scale line 16 at the bottom, and the distance between the upper end of the movable sleeve 4 and the bottom wall of the inner cavity of the stirring sleeve 1 is 150mm; when the block 13 is inserted into the tooth groove 12 at the upper end, the lower end of the stirring sleeve 1 coincides with the scale line 16 at the top, and the distance between the upper end of the movable sleeve 4 and the bottom wall of the inner cavity of the stirring sleeve 1 is 250mm, which meets the construction requirements.

[0033] In order to prevent the upper end of the movable sleeve 4 from entering the drilled hole, a baffle 17 is welded to the outer side of the upper end of the movable sleeve 4 .

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A standard positioning device for controlling the exposure of anchor cables, comprising a stirring sleeve, wherein the lower end of the stirring sleeve is provided with a hexagonal shaft head, characterized in that: A movable sleeve is slidably sleeved on the outer side of the stirring sleeve along its length direction, a screw extending radially thereof is fixedly mounted on the outer side of the stirring sleeve, a positioning sleeve is slidably mounted on the screw along its length direction, a strip hole for the positioning sleeve to pass through is provided on the side wall of the movable sleeve, a plurality of tooth grooves are evenly spaced along the length direction of the movable sleeve are provided on the side wall of the strip hole, a block matching the tooth grooves is fixedly mounted on the positioning sleeve, a spring for pushing the positioning sleeve to move away from the stirring sleeve is sleeved on the screw, and a knob for pushing the positioning sleeve to move toward the stirring sleeve is also screwed on the screw.

2. The standard positioning device for controlling the exposure of anchor cables as claimed in claim 1, characterized in that: When one end of the movable sleeve abuts against the outer wall of the stirring sleeve, the projection of the block along the length direction of the stirring sleeve coincides with the tooth groove.

3. The standard positioning device for controlling the exposure of anchor cables as claimed in claim 1, characterized in that: One end of the movable sleeve is provided with a through hole for the screw rod to pass through, the screw rod is provided with a guide groove extending along the length direction thereof, and the inner wall of the through hole is provided with a convex block matching the guide groove.

4. The standard positioning device for controlling the exposure of anchor cables as claimed in claim 1, characterized in that: A sliding pin extending in the radial direction is fixedly mounted on the outer side of the stirring sleeve, and a long strip-shaped notch matching with the sliding pin is arranged on the side wall of the movable sleeve.

5. The standard positioning device for controlling the exposure of anchor cables as claimed in claim 1, characterized in that: The outer wall of the stirring sleeve is provided with scale lines matching the lower end of the movable sleeve.

6. The standard positioning device for controlling the exposure of anchor cables as claimed in claim 1, characterized in that: A baffle is fixedly mounted on the outer side of the upper end of the movable sleeve.

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