Roadbed slope protection anchoring rod

Abstract

The utility model relates to the technical field of roadbed slope protection, in particular to a roadbed slope protection anchoring rod. The device comprises an anchor rod body, the anchor rod body is provided with a plurality of expansion mechanisms capable of being adjusted according to the hole diameter of a drill hole, and each expansion mechanism comprises a first variable-diameter rod, a second variable-diameter rod and a variable-diameter assembly used for driving the first variable-diameter rod and the second variable-diameter rod to stretch out and draw back, the multiple first variable-diameter rods and the multiple second variable-diameter rods are arranged, and the first variable-diameter rods and the second variable-diameter rods are arranged on the anchor rod body in a surrounding mode. In the anchor rod placing process, it can be guaranteed that the anchor rod is located in the center of a drill hole all the time, and the phenomenon that the anchor rod is tightly attached to the hole wall of the drill hole is avoided; within a certain range, the device can be adjusted according to the hole diameter of a drilled hole in site construction, and the application range of the device is widened; the expansion mechanism and the anchor rod body are designed in a separated mode, so that the expansion assembly can be installed on an existing anchor rod, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to roadbed slope protection technical field, concretely is a kind of roadbed slope protection anchoring rod. BACKGROUND

[0002] In the roadbed slope protection and tunnel excavation support construction, anchor rod support is more common reinforcing support mode.Annular rod is made of metal piece, wood piece, polymer piece or other material, is punched into the hole drilled in advance around rock mass or chamber, and the special structure of its head, rod body and tail plate (also can not be used) or rely on the adhesion effect is combined with stable rock mass to produce suspension effect, composite beam effect, reinforcing effect, to achieve the purpose of support.It has the advantages of low cost, good support effect, simple operation, flexible use, less occupation of construction clearance and the like.

[0003] Anchor rod support technology construction process mainly includes: determining hole position--drilling machine is in position drilling--hole cleaning--anchor rod placement--slurry preparation--primary grouting--secondary high-pressure grouting--concrete bearing capacity pouring or profiled steel waist beam manufacturing--anchor rod tensioning locking--outer anchor head protection.In the process of anchor rod placement, the placement position of anchor rod should be concentric with the drilling hole, and the diameter of anchor rod is generally less than the diameter of the drilling hole.Due to the overlength of anchor rod, anchor rod may deviate from the center of drilling hole in the process of placement, and anchor rod may be in close contact with the hole wall.

[0004] Chinese patent CN202122338290.9 discloses "anchor rod positioner and anchor rod", publication number CN216075095U, the device includes first cylinder sheet and second cylinder sheet, the first cylinder sheet has two first butt surfaces, and the second cylinder sheet has two second butt surfaces which are respectively spliced with the two first butt surfaces; two first butt plates are respectively provided outside the first butt surface of the first cylinder sheet, and two second butt plates are respectively provided outside the second butt surface of the second cylinder sheet; a positioning pin is fixed outside the two first butt plates, and a positioning hole corresponding to the positioning pin is arranged on the two second butt plates; the shaft center of the positioning pin is provided with a through hole, and the two positioning pins are inserted into the two positioning holes and inserted into the through hole through the connecting piece to make the first cylinder sheet and the second cylinder sheet butt joint and fixed to form a cylinder body.But the device has some defects: the device can only be applied to the drilling hole with the same diameter, and the device cannot be adjusted according to the diameter of the drilling hole, which greatly reduces the application range of the device. UTILITY MODEL CONTENTS

[0005] In order to solve the problems of the prior art, the utility model provides a kind of roadbed slope protection anchoring rod, in a certain range, can be adjusted according to the diameter of drilling hole in field construction, improve the application range of the device.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of roadbed slope protection anchoring rod, including anchor rod body, the anchor rod body is provided with multiple expansion mechanism capable of being adjusted according to the size of borehole diameter, the expansion mechanism includes mutually hinged first variable diameter rod and second variable diameter rod, variable diameter assembly for driving the telescopic first variable diameter rod and second variable diameter rod, the first variable diameter rod and second variable diameter rod are all provided with multiple, the first variable diameter rod and second variable diameter rod are all annularly arranged on anchor rod body.

[0007] With the above structure design, in a certain range, the size of borehole diameter can be adjusted according to the on-site construction, improve the application range of the device.

[0008] Preferably, the lower end of the first variable diameter rod and the upper end of the second variable diameter rod are hinged on the support plate, and the support plate is an arc plate.

[0009] With the above structure design, the end of the first variable diameter rod and the second variable diameter rod is prevented from causing damage to the hole wall, the contact area of the device with the hole wall is increased, and then the device can support the hole wall.

[0010] Preferably, the variable diameter assembly includes a first rotating ring hinged to the lower end of the second variable diameter rod, a first threaded cylinder rotationally connected to the rotating ring, the first threaded cylinder is threadedly connected to the anchor rod body, a first ring groove matched with the first rotating ring is formed in the cylinder wall of the first threaded cylinder, and the upper end of the first variable diameter rod is hinged to the anchor rod body.

[0011] With the above structure design, rotating the first threaded cylinder can make the first variable diameter rod and the second variable diameter rod telescopic, and then the device can be adapted to the diameter of the borehole.

[0012] Preferably, the variable diameter assembly includes an upper rotating ring hinged to the upper end of the first variable diameter rod, a lower rotating ring hinged to the lower end of the second variable diameter rod, an upper sleeve rotationally connected to the upper rotating ring, a lower threaded cylinder rotationally connected to the lower rotating ring, and a threaded rod fixedly connected to the lower threaded cylinder, the upper sleeve is sleeved on the anchor rod body, the lower threaded cylinder is threadedly connected to the anchor rod body, and the upper end of the threaded rod penetrates the cylinder wall of the upper sleeve.

[0013] With the above structure design, rotating the lower threaded cylinder can move the expansion mechanism on the anchor rod body, change the position of the expansion mechanism, increase the number of expansion mechanisms, improve the accuracy of the anchor rod body in the center of the borehole, and the expansion mechanism and the anchor rod body are designed separately, so that the expansion mechanism can be used on the existing anchor rod.

[0014] Preferably, the variable diameter assembly comprises upper arc-shaped plates symmetrically arranged on the anchor rod body, upper connecting plates fixedly connected at two ends of the upper arc-shaped plates, lower arc-shaped plates symmetrically arranged on the anchor rod body, lower connecting plates fixedly connected at two ends of the lower arc-shaped plates, upper connecting holes are formed in the upper connecting plates, lower connecting holes are formed in the lower connecting plates, upper ends of the first variable diameter rods are hingedly connected to the upper arc-shaped plates, and lower ends of the second variable diameter rods are hingedly connected to the lower arc-shaped plates.

[0015] With the above structure design, the expansion mechanism can be detached from the anchor rod body, and can be installed on the specified position of the anchor rod body, and can be used for other diameter anchor rods, which is more simple and convenient.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1) In the process of placing the anchor rod, the anchor rod can be ensured to be located at the central position of the drill hole, and the phenomenon that the anchor rod is close to the drill hole wall is avoided.

[0018] 2) Within a certain range, the device can be adjusted according to the size of the hole diameter of the drill hole in the field construction, and the application range of the device is improved.

[0019] 3) The expansion mechanism and the anchor rod body of the device are designed in a separated mode, so that the expansion assembly can be installed on the existing anchor rod, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the utility model;

[0021] Figure 2 is a structural schematic view of the utility model embodiment one;

[0022] Figure 3 is a structural schematic view of the utility model embodiment two;

[0023] Figure 4 is a structural schematic view of the utility model embodiment three; DETAILED DESCRIPTION

[0024] Embodiment one:

[0025] Please refer to Figure 1 , Figure 2The utility model provides a technical scheme: a roadbed slope protection anchoring rod, including the anchor rod body 1, the anchor rod body 1 is provided with multiple expansion mechanism 2 that can adjust according to the borehole aperture size, the expansion mechanism 2 includes mutually hinged first variable diameter rod 21 and second variable diameter rod 22, the variable diameter assembly for driving the telescopic first variable diameter rod 21 and second variable diameter rod 22, first variable diameter rod 21 and second variable diameter rod 22 are all set up multiple, first variable diameter rod 21 and second variable diameter rod 22 are all annularly set up on the anchor rod body 1.The upper end of anchor rod body 1 is connected through the drill bit of screw thread.

[0026] As Figure 2 The lower end of first variable diameter rod 21 and the upper end of second variable diameter rod 22 are mutually hinged, and first variable diameter rod 21 and second variable diameter rod 22 are arranged in four groups, and first variable diameter rod 21 and second variable diameter rod 22 are annularly arranged on the outer side wall of anchor rod body 1.

[0027] The lower end of first variable diameter rod 21 and the upper end of second variable diameter rod 22 are hinged on support plate 3, and support plate 3 is an arc plate. Figure 2 As

[0028] The variable diameter assembly includes first rotating ring 41 hinged to the lower end of second variable diameter rod 22, first threaded cylinder 42 rotationally connected to rotating ring 41, first threaded cylinder 42 is connected to anchor rod body 1 by screw thread, first ring groove 43 matched with first rotating ring 42 is formed in the cylinder wall of first threaded cylinder 42, first rotating ring 42 is installed on first ring groove 43, and the upper end of first variable diameter rod 21 is hinged to anchor rod body 1. First threaded cylinder 42 is a T-shaped structure, first ring groove 43 is formed in the cylinder wall of the upper part of first threaded cylinder 42, and the lower part of first threaded cylinder 42 is a rotating part, so that workers can hold the lower end of first threaded cylinder 42 and rotate first threaded cylinder 42.

[0029] Working principle: when anchor rod body 1 is placed, workers measure the aperture after drilling, workers rotate first threaded cylinder 42, first threaded cylinder 42 moves on anchor rod body 1 through screw thread, first rotating ring 41 slips in first ring groove 43, first variable diameter rod 21 and second variable diameter rod 22 are telescopic, until the aperture of the borehole is matched, support plate 3 can contact the hole wall of the borehole, finally, workers completely insert anchor rod body 1 into the borehole, and the next step construction is carried out.

[0030] Example two:

[0031] As Figure 3As shown, embodiment two is modified relative to embodiment one, the variable diameter assembly comprises an upper rotating ring 51 hingedly connected with the upper end of the first variable diameter rod 21, a lower rotating ring 52 hingedly connected with the lower end of the second variable diameter rod 22, an upper sleeve 53 rotationally connected with the upper rotating ring 41, a lower threaded cylinder 54 rotationally connected with the lower rotating ring 52, a threaded rod 55 fixedly connected with the lower threaded cylinder 54, the upper sleeve 53 is sleeved on the anchor rod body 1, an upper rotating groove matched with the upper rotating ring 51 is formed on the wall of the upper sleeve 53, the upper rotating ring 52 is installed in the upper rotating groove, the lower threaded cylinder 54 is threadedly connected with the anchor rod body 1, a lower rotating groove matched with the lower rotating ring 52 is formed on the wall of the lower threaded cylinder 54, the lower rotating ring 52 is installed in the lower rotating groove, the upper end of the threaded rod 55 penetrates the wall of the upper sleeve 53, a nut 56 is threadedly sleeved on the threaded rod 55, the nut 56 is arranged above and below the upper sleeve 53, by rotating the nut 56, the position of the upper sleeve 53 on the threaded rod 55 is limited.

[0032] The lower threaded cylinder 54 is in T-shaped structure, a lower rotating groove is formed on the wall of the upper part of the lower threaded cylinder 54, the lower part of the lower threaded cylinder 54 is a rotating part, facilitating the staff to hold the lower end of the lower threaded cylinder 54 to rotate the lower threaded cylinder 54.

[0033] The other parts are according to embodiment one.

[0034] Working principle: when the anchor rod body 1 is placed, the staff measures the hole diameter after drilling, the staff rotates the lower threaded cylinder 54 to change the position of the expansion mechanism on the anchor rod body 1 through the thread, the number of the expansion mechanism on the anchor rod body 1 can also be increased, the staff then moves the upper sleeve 53 to make the first variable diameter rod 21 and the second variable diameter rod 22 stretch and retract until they are matched with the hole diameter of the drilling, the supporting plate 3 can contact the hole wall of the drilling, finally the staff rotates the nut 56 to make the nuts 56 above and below the upper sleeve 53 close to the upper sleeve 53, and then the upper sleeve 53 is clamped to make it no longer move, the staff then completely inserts the anchor rod body 1 into the drilling for the next construction.

[0035] Embodiment three:

[0036] As Figure 4As shown, the embodiment three is improved relative to the embodiment one, the reducing assembly includes upper arc-shaped plates 61 symmetrically arranged on the anchor rod body 1, upper connecting plates 62 fixedly connected at both ends of the upper arc-shaped plates 61, lower arc-shaped plates 63 symmetrically arranged on the anchor rod body 1, lower connecting plates 64 fixedly connected at both ends of the lower arc-shaped plates 63, upper connecting holes are formed in the upper connecting plates 62, lower connecting holes are formed in the lower connecting plates 64, upper ends of the first reducing rods 21 are hingedly connected to the upper arc-shaped plates 61, lower ends of the second reducing rods 22 are hingedly connected to the lower arc-shaped plates 63.

[0037] A pair of upper arc-shaped plates 61 and a pair of lower arc-shaped plates 63 are arranged in each reducing assembly, the upper arc-shaped plates 61 are symmetric about the center of the anchor rod body 1, and the lower arc-shaped plates 63 are symmetric about the center of the anchor rod body 1.

[0038] In order to enable the upper arc-shaped plates 61 and the lower arc-shaped plates 63 to be tightly buckled on the anchor rod body 1, rubber layers are fixedly connected to inner side walls of the upper arc-shaped plates 61 and the lower arc-shaped plates 63.

[0039] The embodiment one is used for reducing the diameter of the anchor rod body 1.

[0040] Working principle: when the anchor rod body 1 is placed, a worker measures the hole diameter after drilling, the worker first installs the upper arc-shaped plates 61 and the lower arc-shaped plates 63 on the anchor rod body 1, then passes bolts through the upper connecting holes in the upper connecting plates, passes the bolts through the lower connecting holes in the lower connecting plates, installs hexagonal nuts on the bolts, fastens the upper arc-shaped plates 61 on the anchor rod body, then the worker adjusts the distance between the upper arc-shaped plates 61 and the lower arc-shaped plates 63, enables the first reducing rods 21 and the second reducing rods 22 to stretch and contract, until the first reducing rods 21 and the second reducing rods 22 are adapted to the hole diameter, finally the worker fastens the hexagonal nuts, so that the first reducing rods 21 and the second reducing rods 22 no longer stretch and contract, the worker completely inserts the anchor rod body 1 into the hole, and then performs the next construction.

[0041] The structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the implementation conditions of the utility model, so they do not have technical substantive significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the utility model can produce, should still fall within the scope covered by the technical content disclosed by the utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, the change or adjustment of relative relationship, without substantially changing the technical content, is also regarded as the scope of the utility model.

[0042] The utility model is described above with reference to the preferred embodiments, but the protection scope of the utility model is not limited thereto, and all the technical solutions falling within the scope of claims are within the protection scope of the utility model. Various improvements can be made to the utility model and equivalent components can be substituted for the components thereof without departing from the scope of the utility model. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner.

Claims

1. A road embankment slope protection anchoring rod comprising an anchoring rod body (1), characterized in that: The anchor rod body (1) is provided with a plurality of expansion mechanisms (2) capable of adjusting according to the size of the borehole diameter, the expansion mechanism (2) comprises a first variable diameter rod (21) and a second variable diameter rod (22) hinged to each other, a variable diameter assembly for driving the first variable diameter rod (21) and the second variable diameter rod (22) to extend and retract, the first variable diameter rod (21) and the second variable diameter rod (22) are both provided with a plurality of first variable diameter rods (21) and second variable diameter rods (22), and the first variable diameter rod (21) and the second variable diameter rod (22) are both annularly arranged on the anchor rod body (1).

2. A revetment anchor according to claim 1, wherein: The lower end of the first variable diameter rod (21) and the upper end of the second variable diameter rod (22) are hinged to the support plate (3), and the support plate (3) is an arc-shaped plate.

3. A revetment anchor according to claim 2, wherein: The variable diameter assembly comprises a first rotating ring (41) hinged to the lower end of the second variable diameter rod (22), a first threaded cylinder (42) rotationally connected with the first rotating ring (41), the first threaded cylinder (42) is threadedly connected to the anchor rod body (1), a first ring groove (43) matched with the first rotating ring (41) is formed in the cylinder wall of the first threaded cylinder (42), and the upper end of the first variable diameter rod (21) is hinged to the anchor rod body (1).

4. A revetment anchor according to claim 2, wherein: The variable diameter assembly comprises an upper rotating ring (51) hinged to the upper end of the first variable diameter rod (21), a lower rotating ring (52) hinged to the lower end of the second variable diameter rod (22), an upper sleeve (53) rotationally connected with the upper rotating ring (51), a lower threaded cylinder (54) rotationally connected with the lower rotating ring (52), and a threaded rod (55) fixedly connected to the lower threaded cylinder (54), the upper sleeve (53) is sleeved on the anchor rod body (1), the lower threaded cylinder (54) is threadedly connected to the anchor rod body (1), and the upper end of the threaded rod (55) penetrates the cylinder wall of the upper sleeve (53).

5. A revetment anchor according to claim 2, wherein: The variable diameter assembly comprises an upper arc-shaped plate (61) symmetrically arranged on the anchor rod body (1), an upper connecting plate (62) fixedly connected to both ends of the upper arc-shaped plate (61), a lower arc-shaped plate (63) symmetrically arranged on the anchor rod body (1), and a lower connecting plate (64) fixedly connected to both ends of the lower arc-shaped plate (63), an upper connecting hole is formed in the upper connecting plate (62), a lower connecting hole is formed in the lower connecting plate (64), the upper end of the first variable diameter rod (21) is hinged to the upper arc-shaped plate (61), and the lower end of the second variable diameter rod (22) is hinged to the lower arc-shaped plate (63).

Images