Tunnel grating steel frame feet-lock anchor pipe positioning device

Abstract

The utility model relates to a tunnel grid steel frame feet-lock anchor pipe positioning device which comprises a supporting foot mechanism and an angle adjusting mechanism, the supporting foot mechanism is detachably installed on a grid steel frame, and the angle adjusting mechanism is arranged at the end, away from the grid steel frame, of the supporting foot mechanism; the angle adjusting mechanism comprises a connecting plate, a positioning mounting plate, a scale plate and an angle adjusting assembly, the connecting plate is supported on the supporting leg mechanism, one end of the positioning mounting plate is rotationally connected with one end of the connecting plate, one end of the scale plate is fixed to the connecting plate, and an angle adjusting groove is formed in the scale plate in the thickness direction in a penetrating mode; the position, corresponding to the angle adjusting groove, of the positioning mounting plate is provided with a positioning hole, the angle adjusting assembly is slidably arranged in the angle adjusting groove in the length direction of the angle adjusting groove, the positioning mounting plate can be quickly adjusted and fixed, and therefore the feet-lock anchor pipe can be conveniently mounted through the positioning mounting plate; and the installation efficiency and accuracy of the feet-lock anchor pipe can be improved.

Description

Technical Field

[0001] This application relates to the field of tunnel construction equipment technology, and in particular to a positioning device for a tunnel grid steel frame locking anchor pipe. Background Technology

[0002] In railway tunnels with Class III and IV surrounding rock conditions, a combination of grid steel frame and shotcrete mesh is often used as the initial support method to control the deformation of the surrounding rock after tunnel excavation. After the grid steel frame is erected, in order to improve the stability and load-bearing capacity of the grid steel frame, Φ42 hot-rolled seamless steel perforated pipes need to be driven into the surrounding rock at an angle of 30 to 50° downwards, 30 to 50 cm above the node plates on both sides of the grid steel frame, as anchor pipes. The anchor pipes are then welded to the grid steel frame through anchor connecting steel bars to form a stable load-bearing structure.

[0003] Currently, the installation of anchor pipes mainly relies on manual labor using pneumatic drills. For the sake of convenience, workers often rely on experience to locate the anchor pipes and then drill holes, resulting in significant deviations between the installation height and angle of the anchor pipes and the requirements of the design drawings. This directly weakens the load-bearing capacity of the grating steel frame, reduces the stability of the initial support of the tunnel, and increases the safety risks of tunnel construction. Utility Model Content

[0004] Therefore, it is necessary to provide a positioning device for the anchor pipe of the tunnel grid steel frame anchor pipe to address the problem of low accuracy in the height and angle of the anchor pipe installation.

[0005] This application provides a positioning device for a locking anchor pipe of a tunnel grid steel frame, including a foot support mechanism and an angle adjustment mechanism. The foot support mechanism is detachably installed on the grid steel frame, and the angle adjustment mechanism is located at the end of the foot support mechanism away from the grid steel frame.

[0006] The angle adjustment mechanism includes a connecting plate, a positioning mounting plate, a scale plate, and an angle adjustment component. The connecting plate is supported on the support leg mechanism. One end of the positioning mounting plate is rotatably connected to one end of the connecting plate. The scale plate is integrally formed with the connecting plate. An angle adjustment groove is provided through the scale plate along the thickness direction. A positioning hole is provided on the positioning mounting plate at the position corresponding to the angle adjustment groove. The angle adjustment component is slidably disposed in the angle adjustment groove along the length direction of the angle adjustment groove. When the angle adjustment component moves to a preset angle position in the angle adjustment groove and the positioning mounting plate rotates to the position relative to the connecting plate, the angle adjustment component is coaxial with the positioning hole. The end of the angle adjustment component near the positioning hole extends out of the angle adjustment groove and into the positioning hole to cooperate with the positioning hole to position the positioning mounting plate.

[0007] In one embodiment, the angle adjustment assembly includes a sliding sleeve, a locating pin, and a plurality of balls; the sliding sleeve is slidably disposed in the angle adjustment groove, the sliding sleeve has a sliding groove extending through it along the axial direction, the locating pin is movably disposed in the sliding groove, and the balls are rotatably disposed between the sliding sleeve and the angle adjustment groove.

[0008] The sliding sleeve includes a main ring portion, a first limiting ring portion, and a second limiting ring portion. The first limiting ring portion and the second limiting ring portion are respectively disposed at both ends of the main ring portion. A first limiting groove is provided on the inner wall of the angle adjustment groove corresponding to the position of the first limiting ring portion, and the first limiting ring portion is slidably disposed within the first limiting groove. A second limiting groove is provided on the inner wall of the angle adjustment groove corresponding to the position of the second limiting ring portion, and the second limiting ring portion is slidably disposed within the second limiting groove. A receiving gap is formed between the outer circumferential surface of the main ring portion and the inner wall of the angle adjustment groove. The width of the gap is smaller than the diameter of the ball. The main body ring is provided with mounting holes corresponding to the balls one by one. The diameter of the mounting holes is smaller than the diameter of the balls. The balls are rolled in the mounting holes and are located in the accommodating gap and roll in contact with the inner wall of the angle adjustment groove. The side of the balls away from the angle adjustment groove extends into the sliding groove through the mounting holes. When the positioning pin is inserted into the sliding groove, the positioning pin abuts against the balls and makes the balls abut against the inner wall of the angle adjustment groove to restrict the sliding sleeve from sliding in the angle adjustment groove.

[0009] In one embodiment, the angle adjustment groove includes a plurality of first adjustment grooves and a plurality of second adjustment grooves. The first adjustment grooves and the second adjustment grooves are arc-shaped grooves. The first adjustment grooves and the second adjustment grooves are concentrically arranged and radially spaced apart. The first adjustment grooves and the second adjustment grooves are staggered along the circumferential direction. The first adjustment groove has a first projection on the circumferential plane, and the second adjustment groove has a second projection on the circumferential plane. The first projection and the second projection partially overlap in the circumferential direction, so that the first central angle corresponding to the first adjustment groove and the second central angle corresponding to the second adjustment groove are continuous to form the angle adjustment area of ​​the scale plate.

[0010] In one embodiment, at least one positioning ring is provided on the side of the positioning mounting plate opposite to the scale plate. The end of the positioning ring away from the positioning mounting plate is open. When the positioning ring is subjected to external force, the open end of the positioning ring expands so that the locking foot anchor tube can enter the positioning ring to position the locking foot anchor tube.

[0011] In one embodiment, the circumference of the positioning ring is greater than half the circumference, and the inner circumferential dimension of the positioning ring is adapted to the outer circumferential dimension of the locking foot anchor tube.

[0012] In one embodiment, a leveling mechanism is further included, which is installed between the support leg mechanism and the angle adjustment mechanism;

[0013] The leveling mechanism includes a first adjusting sleeve and a second adjusting sleeve, which are supported between the support leg mechanism and the connecting plate.

[0014] In one embodiment, the leveling mechanism further includes a bubble level fixed to the scale plate.

[0015] In one embodiment, the support mechanism includes a first support and a second support. One end of the first support is detachably connected to the grating frame, and the end of the first support away from the grating frame is threadedly connected to the first adjusting sleeve. One end of the second support is detachably connected to the grating frame, and the end of the second support away from the grating frame is threadedly connected to the second adjusting sleeve.

[0016] In one embodiment, a first connecting sleeve and a second connecting sleeve are further included, the first connecting sleeve being supported between the first adjusting sleeve and the connecting plate, and the second connecting sleeve being supported between the second adjusting sleeve and the connecting plate;

[0017] A first support rod is integrally formed radially on the outer circumferential surface of the first connecting sleeve. A first limiting ring is integrally formed at the end of the first support rod away from the first connecting sleeve. The first limiting ring opens towards the end away from the first connecting sleeve to cooperate with the grating steel frame for limiting. A second support rod is integrally formed radially on the outer circumferential surface of the second connecting sleeve. A second limiting ring is integrally formed at the end of the second support rod away from the second connecting sleeve. The second limiting ring opens towards the end away from the second connecting sleeve to cooperate with the grating steel frame for limiting.

[0018] In one embodiment, a first base is fixedly disposed on the connecting plate at a position corresponding to the first connecting sleeve, and a first boss extending in a direction away from the connecting plate is disposed on the side of the first base away from the connecting plate; the first connecting sleeve has a first through hole that extends axially, the inner circumferential size of the first through hole is adapted to the outer circumferential size of the first adjusting sleeve, one end of the first connecting sleeve is sleeved on the outer circumference of the first adjusting sleeve through the first through hole, the inner circumferential size of the first through hole is adapted to the outer circumferential size of the first boss, and the end of the first connecting sleeve away from the first adjusting sleeve is sleeved on the outer circumference of the first boss through the first through hole;

[0019] A second base is fixedly provided on the connecting plate at the position corresponding to the second connecting sleeve. A second boss extending in a direction away from the connecting plate is provided on the side of the second base away from the connecting plate. The second connecting sleeve has a second through hole that extends through the axis. The inner circumferential size of the second through hole is adapted to the outer circumferential size of the second adjusting sleeve. One end of the second connecting sleeve is sleeved on the outer circumference of the second adjusting sleeve through the second through hole. The inner circumferential size of the second through hole is adapted to the outer circumferential size of the second boss. The end of the second connecting sleeve away from the second adjusting sleeve is sleeved on the outer circumference of the second boss through the second through hole.

[0020] The aforementioned positioning device for anchor pipes of tunnel grating steel frames includes an angle adjustment mechanism comprising a connecting plate, a positioning mounting plate, a scale plate, and an angle adjustment component. An angle adjustment groove is provided on the scale plate, and a positioning hole corresponding to the angle adjustment groove is provided on the positioning mounting plate. When the positioning mounting plate rotates relative to the connecting plate, the positioning hole can move relative to the angle adjustment groove along its length. After moving to a preset angle position, the angle adjustment component within the angle adjustment groove is slid to the preset angle position and inserted into the positioning hole, allowing for rapid adjustment and fixation of the positioning mounting plate. This facilitates the installation of the anchor pipes via the positioning mounting plate, improving the efficiency and accuracy of anchor pipe installation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the grating steel frame structure.

[0022] Figure 2 This is an assembly drawing of a tunnel grating steel frame locking foot anchor pipe positioning device and a grating steel frame according to the present invention.

[0023] Figure 3 This is a schematic diagram of the positioning device for the locking foot anchor pipe of the tunnel grid steel frame according to the present invention.

[0024] Figure 4This is another structural schematic diagram of a tunnel grid steel frame locking anchor pipe positioning device according to the present invention.

[0025] Figure 5 for Figure 3 A schematic diagram of the medium angle adjustment mechanism.

[0026] Figure 6 for Figure 5 A schematic diagram of the middle scale plate.

[0027] Figure 7 This is an assembly drawing of the angle adjustment mechanism and the angle adjustment groove.

[0028] Figure 8 This is another structural diagram of the leveling mechanism.

[0029] Figure 9 for Figure 8 Assembly drawing of the leveling mechanism.

[0030] Figure 10 for Figure 8 Assembly drawing of the leveling mechanism and the support mechanism.

[0031] Figure 11 This is a schematic diagram of the connecting sleeve.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100 steel grid frame, 110 steel frame body, 120 steel frame base plate, 121 bolt holes;

[0034] Support mechanism 200, first support leg 210, second support leg 220;

[0035] Angle adjustment mechanism 300, connecting plate 310, first base 311, second base 312, positioning mounting plate 320, positioning hole 321, positioning retaining ring 322, scale plate 330, angle adjustment groove 331, first adjustment groove 331a, second adjustment groove 331b, first limiting groove 331c, second limiting groove 331d, angle adjustment assembly 340, sliding sleeve 341, sliding groove 341a, main body ring 3411, first limiting ring 3412, second limiting ring 3413, positioning pin 342, ball bearing 343, accommodating gap 344, mounting hole 345;

[0036] Leveling mechanism 400, first adjusting sleeve 410, second adjusting sleeve 420, bubble level 430, level 440, first flange ring 450, second flange ring 460;

[0037] First connecting sleeve 510, first support rod 511, first limiting ring 512, second connecting sleeve 520, second support rod 521, second limiting ring 522. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0044] Please see Figure 1 , Figure 1 A schematic diagram of the structure of the grating steel frame 100 installed in one embodiment of this application is shown. The grating steel frame 100 includes a steel frame body 110 and a steel frame base plate 120. The steel frame body 110 is disposed on the steel frame base plate 120, and bolt holes 121 are provided on the steel frame base plate 120.

[0045] Please see Figure 2 , Figure 3 and Figure 4 One embodiment of this application provides a positioning device for a locking anchor pipe of a tunnel grating steel frame 100, including a support mechanism 200 and an angle adjustment mechanism 300. The support mechanism 200 is detachably installed on the grating steel frame 100, and the angle adjustment mechanism 300 is located at the end of the support mechanism 200 away from the grating steel frame 100. The support mechanism 200 is used to install the angle adjustment mechanism 300 at a suitable position on the grating steel frame 100, and the angle adjustment mechanism 300 is used to adjust the relative angle between the locking anchor pipe (not shown) and the grating steel frame 100 (i.e., the installation angle of the locking anchor pipe) to position the locking anchor pipe, facilitating quick and accurate installation of the locking anchor pipe.

[0046] The support mechanism 200 includes a first support leg 210 and a second support leg 220. One end of the first support leg 210 is detachably connected to the grating steel frame 100, and one end of the second support leg 220 is detachably connected to the grating steel frame 100. For example, bolt holes 121 on the steel frame base plate 120 are correspondingly provided with the first support leg 210 and the second support leg 220. The end of the first support leg 210 near the grating steel frame 100 is inserted into the corresponding bolt hole 121 on the steel frame base plate 120, and the end of the second support leg 220 near the grating steel frame 100 is inserted into the corresponding bolt hole 121 on the steel frame base plate 120, so as to install the angle adjustment mechanism 300 in a suitable position and ensure the accurate positioning of the locking anchor pipe.

[0047] The angle adjustment mechanism 300 includes a connecting plate 310, a positioning mounting plate 320, a scale plate 330, and an angle adjustment assembly 340. The connecting plate 310 is supported on the foot support mechanism 200. In specific implementation, the connecting plate 310 can be detachably supported on the foot support mechanism 200. For example, it can be detachably supported by one end of the positioning mounting plate 320 and rotatably connected to one end of the connecting plate 310 by means of embedding, threaded connection, or snap-fit ​​connection. The scale plate 330 is integrally formed on the connecting plate 310. The positioning mounting plate 320 is used to position the anchor pipe. The scale plate 330 can cooperate with the positioning mounting plate 320 to fix the positioning mounting plate 320 at a preset angle position, thereby positioning the anchor pipe for installation. An angle adjustment groove 331 is provided through the scale plate 330 along its thickness direction. An angle adjustment component 340 is slidably disposed within the angle adjustment groove 331 along its length direction. A positioning hole 321 is provided on the positioning mounting plate 320 at a position corresponding to the angle adjustment groove 331. In use, the construction personnel can first slide the angle adjustment component 340 within the angle adjustment groove 331 to move it to a preset angle position and fix it. Then, the positioning mounting plate 320 is rotated to align the positioning hole 321 with the angle adjustment component 340 and make them coaxial. Next, the angle adjustment component 340 is pushed towards the positioning hole 321, pushing the end of the angle adjustment component 340 near the positioning hole 321 out of the angle adjustment groove 331 and into the positioning hole 321, so as to cooperate with the positioning hole 321 to position the positioning mounting plate 320. This facilitates the adjustment and fixing efficiency of the positioning mounting plate 320, thereby improving the installation efficiency of the anchor pipe.

[0048] In some embodiments, at least one positioning retaining ring 322 is provided on the side of the positioning mounting plate 320 opposite to the scale plate 330 for fixing the anchor pipe. The positioning retaining ring 322 can be detachably or fixedly connected to the positioning mounting plate 320. Exemplarily, there are two positioning retaining rings 322, and the two positioning retaining rings 322 are coaxially arranged to ensure the installation direction of the anchor pipe. Simultaneously, it also ensures that the anchor pipe remains balanced when locked within the positioning retaining ring 322, thereby improving the stability of the anchor pipe's positioning. Understandably, in other embodiments, the number of positioning retaining rings 322 can also be set to one, by increasing the width of the positioning retaining ring to ensure the installation direction and stability of the anchor pipe.

[0049] The positioning ring 322 has an opening at one end away from the positioning mounting plate 320 to avoid interference between the positioning ring 322 and the grating steel frame 100 (mainly the steel frame body 110), ensuring that the anchor pipe can contact the main beam on the steel frame body 110, thus facilitating welding of the anchor pipe to the steel frame body 110. Specifically, taking two positioning rings 322 as an example, after the positioning mounting plate 320 is adjusted to its position, the construction personnel can insert the anchor pipe into the positioning rings 322 sequentially along the axial direction of the positioning rings 322 (i.e., the adjusted angle) to complete the positioning of the anchor pipe. In other embodiments, the positioning ring 322 can also be set as a complete ring to ensure stable positioning of the anchor pipe; during assembly, simply offset the positioning ring 322 from the main beam on the steel frame body 110 to ensure contact between the anchor pipe and the main beam.

[0050] In some embodiments, please refer to Figure 5 and Figure 6The angle adjustment groove 331 includes multiple first adjustment grooves 331a and multiple second adjustment grooves 331b. The first adjustment grooves 331a and second adjustment grooves 331b are arc-shaped grooves, concentrically arranged, and radially spaced apart. An angle adjustment component 340 is slidably disposed within each of the first adjustment grooves 331a and each of the second adjustment grooves 331b. Correspondingly, the positioning mounting plate 320 has two positioning holes 321, each corresponding to a first adjustment groove 331a and a second adjustment groove 331b. The first adjustment groove 331a and the second adjustment groove 331b can divide the total angle adjustment range of the scale into multiple small angle adjustment areas. By setting angle adjustment components 340 in each angle adjustment area, a rough angle range can be determined first according to the installation angle of the anchor pipe, and then the angle adjustment components 340 in the corresponding angle range can be adjusted to achieve two-level adjustment of the angle from coarse to fine, thereby improving the adjustment efficiency and accuracy of the angle. In specific implementation, the first adjustment groove 331a and the second adjustment groove 331b are centered on the rotation center between the connecting plate 310 and the positioning mounting plate 320. The first adjustment groove 331a and the second adjustment groove 331b have a radial isolation gap J1. The first distance between the center of the first adjustment groove 331a and the center of the circle in its length direction (which can be regarded as the first radius R1 of the first adjustment groove 331a) is greater than the second distance between the center of the second adjustment groove 331b and the center of the circle in its length direction (which can be regarded as the second radius R2 of the second adjustment groove 331b). Thus, the first adjustment groove 331a can be regarded as an outer ring arc groove with a first radius R1, and the second adjustment groove 331b can be regarded as an inner ring arc groove with a second radius R2. The outer ring formed by the circumferential extension of each outer ring arc groove and the inner ring formed by the circumferential extension of each inner ring arc groove are concentric rings. The outer ring and the inner ring are arranged at intervals in the radial direction.

[0051] The first adjustment groove 331a and the second adjustment groove 331b are staggered circumferentially to achieve a continuous angle adjustment range. Specifically, two adjacent first adjustment grooves 331a are spaced apart circumferentially by a first interval region H1, and two adjacent second adjustment grooves 331b are spaced apart circumferentially by a second interval region H2. The staggered distribution of the first adjustment grooves 331a and the second adjustment grooves 331b axially means that the first adjustment groove 331a and the second interval region are radially corresponding, and the second adjustment groove 331b and the first interval region are radially corresponding. This staggered arrangement of the first adjustment grooves 331a and the second adjustment grooves 331b can cover most of the angle on the scale, which is beneficial to increasing the angle adjustment range for installing the anchor pipe. Furthermore, the first adjustment groove 331a has a first projection on the circumferential plane, and the second adjustment groove 331b has a second projection on the circumferential plane. The first projection and the second projection partially overlap in the circumferential direction. Since the angle adjustment component 340 has a certain volume, and the angle at the location of the angle adjustment component 340 is usually the angle between the line connecting the center of the angle adjustment component 340 to the central angle and the 0 mark, when the angle adjustment component 340 is located at both ends of the first adjustment groove 331a and the second adjustment groove 331b, the arc angle between the center of the angle adjustment component 340 and the ends of the first adjustment groove 331a and the second adjustment groove 331b cannot be covered. Therefore, by setting the first projection and the second projection to partially overlap in the circumferential direction, the first central angle corresponding to the first adjustment groove 331a and the second central angle corresponding to the second adjustment groove 331b can be continuous to form the angle adjustment area of ​​the scale plate 330, thereby ensuring that the angle adjustment component 340 can cover the entire angle range when adjusting the angle.

[0052] In some embodiments, please refer to Figure 5 and Figure 7The angle adjustment assembly 340 includes a sliding sleeve 341, a positioning pin 342, and multiple balls 343. The sliding sleeve 341 is slidably disposed within the angle adjustment groove 331, and a sliding groove 341a is axially disposed within the sliding sleeve 341. The positioning pin 342 is movably disposed within the sliding groove 341a. Specifically, the sliding sleeve 341 is disposed within the corresponding first adjustment groove 331a and second adjustment groove 331b. Taking the first adjustment groove 331a as an example, when the sliding sleeve 341 slides within the first adjustment groove 331a, the sliding sleeve 341 can drive the positioning pin 342 to slide synchronously. The positioning pin 342 can axially extend out of the sliding groove 341a to enter the positioning hole 321, thereby fixing the positioning mounting plate 320. The positioning pin 342 can also retract into the sliding groove 341a to disengage from the positioning hole 321, thereby releasing the positioning mounting plate 320. The ball bearing 343 is rolled between the sliding sleeve 341 and the angle adjustment groove 331. A mounting hole 345 is provided through the sliding sleeve 341 at the position corresponding to the ball bearing 343, allowing the side of the ball bearing 343 furthest from the angle adjustment groove 331 to extend into the sliding groove 341a through the mounting hole 345. With this configuration, when the locating pin 342 is not inserted into the sliding groove 341a, the ball bearing 343 is not subjected to external force and can roll between the inner wall of the angle adjustment groove 331 and the sliding sleeve 341. This converts the sliding friction between the sliding sleeve 341 and the inner wall of the angle adjustment groove 331 into rolling friction of the ball bearing 343, which helps reduce the frictional resistance of the sliding sleeve 341 when sliding within the angle adjustment groove 331. This not only makes the sliding operation of the sliding sleeve 341 smoother but also... This reduces wear on the sliding groove 341a, thereby extending the service life of the sliding sleeve 341. When the sliding sleeve 341 moves into place, the positioning pin 342 is inserted into the sliding groove 341a. The outer wall of the positioning pin 342 can push the ball 343 against the inner wall of the angle adjustment plate. Thus, through the locking action between the positioning pin 342 and the ball 343, the sliding sleeve 341 and the positioning pin 342 are fixed in the current position to prevent the positioning mounting plate 320 from shifting, thereby ensuring the stable positioning of the locking foot anchor pipe.

[0053] In an optional embodiment, the sliding sleeve 341 includes a main ring portion 3411, a first limiting ring portion 3412, and a second limiting ring portion 3413. A receiving gap 344 is formed between the outer peripheral surface of the main ring portion 3411 and the inner wall of the angle adjustment groove 331 to receive the ball bearing 343. Specifically, the main ring portion 3411 is provided with mounting holes 345 corresponding one-to-one with the ball bearing 343. The ball bearing 343 is rotatably disposed within the mounting holes 345. The diameter of the mounting holes 345 is smaller than the diameter of the ball bearing 343. Simultaneously, the width of the receiving gap 344 is also smaller than the diameter of the ball bearing 343. This arrangement ensures that after installation, the ball bearing 343 can be positioned within the receiving gap 344 and roll against the inner wall of the angle adjustment groove 331. Simultaneously, the side of the ball bearing 343 away from the angle adjustment groove 331 extends into the sliding groove 341a through the mounting hole 345. When the positioning pin 342 is inserted into the sliding groove 341a, the ball bearing 343 can abut against the positioning pin 342 and press against the inner wall of the angle adjustment groove 331. The friction between the ball bearing 343 and the inner wall of the angle adjustment groove 331 and the outer wall of the positioning pin 342 restricts the sliding sleeve 341 from sliding in the angle adjustment groove 331, thereby locking the sliding sleeve 341 and effectively preventing the sliding sleeve 341 from loosening or shifting angle during use.

[0054] The first limiting ring 3412 and the second limiting ring 3413 are respectively disposed at both ends of the main ring. The inner wall of the angle adjustment groove 331 has a first limiting groove 331c corresponding to the position of the first limiting ring 3412, used to accommodate the first limiting ring 3412; the inner wall of the angle adjustment groove 331 has a second limiting groove 331d corresponding to the position of the second limiting ring 3413, used to accommodate the second limiting ring 3413, thus preventing the sliding sleeve 341 from falling out of the angle adjustment groove 331. Specifically, the first limiting ring 3412 is slidably disposed within the first limiting groove 331c, and the second limiting ring 3413 is slidably disposed within the second limiting groove 331d. Through the sliding of the first limiting ring 3412 and the second limiting ring 3413 within their corresponding limiting grooves, the movement trajectory of the sliding sleeve 341 can be constrained, preventing radial displacement during sliding and ensuring the accuracy and stability of the angle adjustment.

[0055] In some embodiments, please refer to Figure 3 and Figure 4The tunnel grating steel frame 100 locking anchor pipe positioning device of this application also includes a leveling mechanism 400. The leveling mechanism 400 is installed between the support mechanism 200 and the angle adjustment mechanism 300. On the one hand, the leveling mechanism 400 can be used to adjust the unevenness of the support mechanism 200 in the installation position in the tunnel, thereby achieving the leveling of the angle adjustment mechanism 300 and ensuring that the 0 mark line of the angle adjustment mechanism 300 remains horizontal. On the other hand, the leveling mechanism 400 can also cooperate with the support mechanism 200 to adjust the height of the angle adjustment mechanism 300 within a certain range to ensure that the angle adjustment mechanism 300 can be adapted to the height of the grating steel frame 100.

[0056] The leveling mechanism 400 includes a first adjusting sleeve 410 and a second adjusting sleeve 420. The first adjusting sleeve 410 and the second adjusting sleeve 420 are supported between the support leg mechanism 200 and the connecting plate 310 to adjust the relative height between the connecting plate 310 and the support leg mechanism 200. The first adjusting sleeve 410 is threadedly connected to the end of the first support leg 210 away from the grating steel frame 100, and the second adjusting sleeve 420 is threadedly connected to the end of the second support leg 220 away from the grating steel frame 100. By rotating the first adjusting sleeve 410 and the second adjusting sleeve 420, the first adjusting sleeve 410 and the second adjusting sleeve 420 can move up and down along the height direction on the corresponding first support leg 210 and second support leg 220, thereby adjusting the levelness of the angle adjustment mechanism 300 to adapt to different ground conditions and achieve level adjustment of the entire device. The leveling mechanism 400 also includes a bubble level 430, which is fixed on the scale plate 330 to visually display whether the entire device is in a horizontal state. This allows construction personnel to judge whether the angle adjustment mechanism 300 is horizontal by observing the position of the bubble in the bubble level 430, thus providing a basis for the leveling operation.

[0057] In an optional embodiment, please refer to Figure 8 , Figure 9 and Figure 10 The leveling mechanism 400 may include a spirit level 440, with the first end of the spirit level 440 mounted on the first adjusting sleeve 410 and the second end of the spirit level 440 mounted on the second adjusting sleeve 420; the aforementioned bubble level 430 is disposed on the spirit level 440.

[0058] In a specific implementation, a first flange ring 450 can be set on the first adjusting sleeve 410 and a second flange ring 460 can be set on the second adjusting sleeve 420. One end of the level 440 is installed on the first flange ring 450 and the other end of the level 440 is installed on the second flange ring 460. More specifically, the level 440 can overlap the first flange ring 450 and the second flange ring 460. After the construction personnel rotate the first adjusting sleeve 410 and the second adjusting sleeve 420 to achieve leveling of the device, the level 440 can be placed between the first flange ring 450 and the second flange ring 460. In some other embodiments, when the first flange ring 450 and the second flange ring 460 are provided, a first annular groove can be recessed along the circumferential direction on the outer peripheral surface of the first adjusting sleeve 410, and the first flange ring 450 is rotatably disposed in the first annular groove; a second annular groove is recessed along the circumferential direction on the outer peripheral surface of the second adjusting sleeve 420, and the second flange ring 460 is rotatably disposed in the second annular groove, so as to ensure that the first flange ring 450 and the second flange ring 460 will not rotate when the first adjusting sleeve 410 and the second adjusting sleeve 420 rotate, thereby ensuring the stability of the installation of the level 440.

[0059] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 11 The tunnel grid steel frame 100 locking anchor pipe positioning device of this application further includes a first connecting sleeve 510 and a second connecting sleeve 520. The first connecting sleeve 510 is supported between the first adjusting sleeve 410 and the connecting plate 310, and the second connecting sleeve 520 is supported between the second adjusting sleeve 420 and the connecting plate 310. The first connecting sleeve 510 and the second connecting sleeve 520 serve to connect and support the connecting plate 310, so as to firmly connect the adjusting sleeve and the connecting plate 310 and ensure the structural strength and stability of the entire angle adjustment mechanism 300. Optionally, the first connecting sleeve 510 and the second connecting sleeve 520 are detachably connected to the corresponding adjusting sleeve and the connecting plate 310 to facilitate quick disassembly and assembly of the angle adjustment structure, thereby improving the installation efficiency of the locking anchor pipe.

[0060] In a specific implementation, a first base 311 is fixedly provided on the connecting plate 310 at the position corresponding to the first connecting sleeve 510. A first boss (not shown) extending in a direction away from the connecting plate 310 is provided on the side of the first base 311 away from the connecting plate 310. The first boss is used to connect the first connecting sleeve 510. The first connecting sleeve 510 has a first through hole extending axially. The inner circumferential dimension of the first through hole is adapted to the outer circumferential dimension of the first adjusting sleeve 410. One end of the first connecting sleeve 510 is fitted onto the outer circumference of the first adjusting sleeve 410 through the first through hole, facilitating quick connection and separation of the first connecting sleeve 510 and the first adjusting sleeve 410. The inner circumferential dimension of the first through hole is adapted to the outer circumferential dimension of the first boss. The end of the first connecting sleeve 510 away from the first adjusting sleeve 410 is fitted onto the outer circumference of the first boss through the first through hole, facilitating quick connection and separation of the first connecting sleeve 510 and the first boss. With this configuration, the first connecting sleeve 510 can securely connect the first adjusting sleeve 410 and the connecting plate 310. Through the cooperation of the first adjusting sleeve 410 and the first boss with the corresponding ends of the first connecting sleeve 510, not only can the angle adjustment mechanism 300 be quickly disassembled and assembled, but it also helps to enhance the reliability of the connection and prevent the first connecting sleeve 510 from axially moving during use.

[0061] Correspondingly, a second base 312 is fixedly provided on the connecting plate 310 at the position corresponding to the second connecting sleeve 520. A second boss (not shown) extending in a direction away from the connecting plate 310 is provided on the side of the second base 312 away from the connecting plate 310. The second boss is used to connect the second connecting sleeve 520. The second connecting sleeve 520 has a second through hole extending axially. The inner circumferential dimension of the second through hole is adapted to the outer circumferential dimension of the second adjusting sleeve 420. One end of the second connecting sleeve 520 is fitted onto the outer circumference of the second adjusting sleeve 420 through the second through hole, facilitating quick connection and separation of the second connecting sleeve 520 and the second adjusting sleeve 420. The inner circumferential dimension of the second through hole is adapted to the outer circumferential dimension of the second boss. The end of the second connecting sleeve 520 away from the second adjusting sleeve 420 is fitted onto the outer circumference of the second boss through the second through hole, facilitating quick connection and separation of the second connecting sleeve 520 and the second boss. With this configuration, the second connecting sleeve 520 can securely connect the second adjusting sleeve 420 and the connecting plate 310. Through the cooperation of the second adjusting sleeve 420 and the second boss with the corresponding ends of the second connecting sleeve 520, not only can the angle adjustment mechanism 300 be quickly disassembled and assembled, but it also helps to enhance the reliability of the connection and prevent the second connecting sleeve 520 from axially moving during use.

[0062] In some optional embodiments, a first support rod 511 is integrally formed radially on the outer peripheral surface of the first connecting sleeve 510. A first limiting ring 512 is integrally formed at the end of the first support rod 511 away from the first connecting sleeve 510. The first limiting ring 512 opens toward the end away from the first connecting sleeve 510 to cooperate with the grid steel frame 100 for limiting. In use, the first limiting ring 512 can lock the steel frame body 110 to limit the relative movement between the grid steel frame 100 and the angle adjustment mechanism 300, and ensure the positional accuracy of the locking foot anchor pipe relative to the grid steel frame 100 during installation. A second support rod 521 is integrally formed radially on the outer circumferential surface of the second connecting sleeve 520. A second limiting ring 522 is integrally formed at the end of the second support rod 521 away from the second connecting sleeve 520. The second limiting ring 522 opens toward the end away from the second connecting sleeve 520 to cooperate with the grid steel frame 100 for limiting. Similarly, in use, the second limiting ring 522 can lock the steel frame body 110 to limit the relative movement between the grid steel frame 100 and the angle adjustment mechanism 300, ensuring the positional accuracy of the anchor pipe between the locking foot and the grid steel frame 100 during installation.

[0063] Please see Figures 2 to 11 When using the tunnel grating steel frame 100 locking anchor pipe positioning device of this utility model, firstly, the grating steel frame 100 is placed in the designated position and installed on the steel frame base plate 120 by the first support 210 and the second support 220, so that the first limiting ring 512 and the second limiting ring 522 are locked on the steel frame body 110. Then, by rotating the first adjusting sleeve 410 and the second adjusting sleeve 420, while observing the level bubble 430, the leveling and installation of the device is completed when the bubble in the level bubble 430 is in the middle. Then, according to the target installation angle of the locking anchor pipe and the angle adjustment range of the first adjusting groove 331a and the second adjusting groove 331b, the adjusting groove corresponding to the target installation angle is determined, and the sliding sleeve 341 in the adjusting groove is slid so that the sliding sleeve 341 slides to the position corresponding to the target installation angle. Next, rotate the positioning mounting plate 320 so that the positioning hole 321 aligns with the sliding groove 341a, and insert the positioning pin 342 into the sliding groove 341a and the positioning hole 321 in sequence. During the insertion of the positioning pin 342, the steel ball is squeezed against the inner wall of the adjusting groove to fix the positioning mounting plate 320 in the current position. Finally, insert the locking anchor pipe into the positioning retaining ring 322 along the axial direction to complete the positioning of the locking anchor pipe. At this time, the construction personnel can drive the locking anchor pipe into the designated area to realize the installation of the locking anchor pipe.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A positioning device for a locking anchor pipe of a tunnel grid steel frame, characterized in that, It includes a support leg mechanism and an angle adjustment mechanism. The support leg mechanism is detachably mounted on the grating steel frame, and the angle adjustment mechanism is located at the end of the support leg mechanism away from the grating steel frame. The angle adjustment mechanism includes a connecting plate, a positioning mounting plate, a scale plate, and an angle adjustment component. The connecting plate is supported on the support leg mechanism. One end of the positioning mounting plate is rotatably connected to one end of the connecting plate. The scale plate is integrally formed with the connecting plate. An angle adjustment groove is provided through the scale plate along the thickness direction. A positioning hole is provided on the positioning mounting plate at the position corresponding to the angle adjustment groove. The angle adjustment component is slidably disposed in the angle adjustment groove along the length direction of the angle adjustment groove. When the angle adjustment component moves to a preset angle position in the angle adjustment groove and the positioning mounting plate rotates to the position relative to the connecting plate, the angle adjustment component is coaxial with the positioning hole. The end of the angle adjustment component near the positioning hole extends out of the angle adjustment groove and into the positioning hole to cooperate with the positioning hole to position the positioning mounting plate.

2. The tunnel grid steel frame locking anchor pipe positioning device according to claim 1, characterized in that, The angle adjustment assembly includes a sliding sleeve, a locating pin, and a plurality of balls; the sliding sleeve is slidably disposed in the angle adjustment groove, and the sliding groove is axially provided in the sliding sleeve; the locating pin is movably disposed in the sliding groove; and the balls are rotatably disposed between the sliding sleeve and the angle adjustment groove. The sliding sleeve includes a main ring portion, a first limiting ring portion, and a second limiting ring portion. The first limiting ring portion and the second limiting ring portion are respectively disposed at both ends of the main ring portion. A first limiting groove is provided on the inner wall of the angle adjustment groove corresponding to the position of the first limiting ring portion, and the first limiting ring portion is slidably disposed within the first limiting groove. A second limiting groove is provided on the inner wall of the angle adjustment groove corresponding to the position of the second limiting ring portion, and the second limiting ring portion is slidably disposed within the second limiting groove. A receiving gap is formed between the outer circumferential surface of the main ring portion and the inner wall of the angle adjustment groove. The width of the gap is smaller than the diameter of the ball. The main body ring is provided with mounting holes corresponding to the balls one by one. The diameter of the mounting holes is smaller than the diameter of the balls. The balls are rolled in the mounting holes and are located in the accommodating gap and roll in contact with the inner wall of the angle adjustment groove. The side of the balls away from the angle adjustment groove extends into the sliding groove through the mounting holes. When the positioning pin is inserted into the sliding groove, the positioning pin abuts against the balls and makes the balls abut against the inner wall of the angle adjustment groove to restrict the sliding sleeve from sliding in the angle adjustment groove.

3. The tunnel grid steel frame locking anchor pipe positioning device according to claim 2, characterized in that, The angle adjustment groove includes a plurality of first adjustment grooves and a plurality of second adjustment grooves. The first adjustment grooves and the second adjustment grooves are arc-shaped grooves. The first adjustment grooves and the second adjustment grooves are concentrically arranged and radially spaced apart. The first adjustment grooves and the second adjustment grooves are staggered along the circumferential direction. The first adjustment groove has a first projection on the circumferential plane, and the second adjustment groove has a second projection on the circumferential plane. The first projection and the second projection partially overlap in the circumferential direction, so that the first central angle corresponding to the first adjustment groove and the second central angle corresponding to the second adjustment groove are continuous to form the angle adjustment area of ​​the scale plate.

4. The tunnel grid steel frame locking anchor pipe positioning device according to claim 1, characterized in that, At least one positioning retaining ring is provided on the side of the positioning mounting plate opposite to the scale plate. The end of the positioning retaining ring away from the positioning mounting plate is open. When the positioning retaining ring is subjected to external force, the open end of the positioning retaining ring expands so that the locking foot anchor tube can enter the positioning retaining ring to position the locking foot anchor tube.

5. The tunnel grid steel frame locking anchor pipe positioning device according to claim 4, characterized in that, The circumference of the positioning ring is greater than half the circumference, and the inner circumference of the positioning ring is adapted to the outer circumference of the locking foot anchor tube.

6. A tunnel grid steel frame locking anchor pipe positioning device according to any one of claims 1 to 5, characterized in that, It also includes a leveling mechanism, which is installed between the support leg mechanism and the angle adjustment mechanism; The leveling mechanism includes a first adjusting sleeve and a second adjusting sleeve, which are supported between the support leg mechanism and the connecting plate.

7. The tunnel grid steel frame locking anchor pipe positioning device according to claim 6, characterized in that, The leveling mechanism also includes a bubble level, which is fixed to the scale plate.

8. The tunnel grid steel frame locking anchor pipe positioning device according to claim 7, characterized in that, The support mechanism includes a first support and a second support. One end of the first support is detachably connected to the grating steel frame, and the end of the first support away from the grating steel frame is threadedly connected to the first adjusting sleeve. One end of the second support is detachably connected to the grating steel frame, and the end of the second support away from the grating steel frame is threadedly connected to the second adjusting sleeve.

9. A tunnel grid steel frame locking anchor pipe positioning device according to claim 6, characterized in that, It also includes a first connecting sleeve and a second connecting sleeve, wherein the first connecting sleeve is supported between the first adjusting sleeve and the connecting plate, and the second connecting sleeve is supported between the second adjusting sleeve and the connecting plate; A first support rod is integrally formed radially on the outer circumferential surface of the first connecting sleeve. A first limiting ring is integrally formed at the end of the first support rod away from the first connecting sleeve. The first limiting ring opens towards the end away from the first connecting sleeve to cooperate with the grating steel frame for limiting. A second support rod is integrally formed radially on the outer circumferential surface of the second connecting sleeve. A second limiting ring is integrally formed at the end of the second support rod away from the second connecting sleeve. The second limiting ring opens towards the end away from the second connecting sleeve to cooperate with the grating steel frame for limiting.

10. A tunnel grid steel frame locking anchor pipe positioning device according to claim 9, characterized in that, A first base is fixedly provided on the connecting plate at the position corresponding to the first connecting sleeve. A first boss extending in a direction away from the connecting plate is provided on the side of the first base away from the connecting plate. The first connecting sleeve has a first through hole that extends through the axial direction. The inner circumferential size of the first through hole is adapted to the outer circumferential size of the first adjusting sleeve. One end of the first connecting sleeve is sleeved on the outer circumference of the first adjusting sleeve through the first through hole. The inner circumferential size of the first through hole is adapted to the outer circumferential size of the first boss. The end of the first connecting sleeve away from the first adjusting sleeve is sleeved on the outer circumference of the first boss through the first through hole. A second base is fixedly provided on the connecting plate at the position corresponding to the second connecting sleeve. A second boss extending in a direction away from the connecting plate is provided on the side of the second base away from the connecting plate. The second connecting sleeve has a second through hole that extends through the axis. The inner circumferential size of the second through hole is adapted to the outer circumferential size of the second adjusting sleeve. One end of the second connecting sleeve is sleeved on the outer circumference of the second adjusting sleeve through the second through hole. The inner circumferential size of the second through hole is adapted to the outer circumferential size of the second boss. The end of the second connecting sleeve away from the second adjusting sleeve is sleeved on the outer circumference of the second boss through the second through hole.

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