Dry hanging stone material board leveling device

Abstract

This invention discloses a leveling device for dry-hanging stone slabs, belonging to the field of dry-hanging stone slab construction technology. It includes an outer screw cylinder, a leveling nut, and a fixed leveling plate. A fixed leveling rod is fixedly installed at the other end of the outer screw cylinder. The threaded hole of the leveling nut engages with the external thread of the outer screw cylinder. The inner sleeve is inserted into the cavity of the outer screw cylinder and slides within the cavity. An inner screw rod is installed at the end of the inner sleeve facing the opening of the outer screw cylinder. The opening end of the outer screw cylinder rotates with a rotating cylinder. A threaded blind hole is provided at the axis of the rotating cylinder, and the threaded blind hole engages with the threaded inner screw rod. The inner end of the movable leveling rod passes through guide holes on the outer screw cylinder and the inner sleeve and is placed in a placement groove. The inner end of the movable leveling rod is connected to a pressure plate. The pressure plate and the end wall of the placement cavity of the inner sleeve are connected by a return spring. Compared with existing technologies, this device has the characteristic of leveling two stone slabs of different thicknesses.

Description

Technical Field

[0001] This invention relates to the field of dry-hanging stone slab construction technology, and in particular to a leveling device for dry-hanging stone slabs. Background Technology

[0002] The dry-hanging method for stone, also known as the air-hanging method, is a new type of construction technique in contemporary decorative material decoration. During construction, the workers need to adjust the position of each stone to ensure that one side of all the stones is in the same vertical plane, thereby ensuring the aesthetics of the surface.

[0003] Existing tile leveling devices use a leveling nut and a T-shaped steel pin to clamp two tiles together. The clamping force of the nut and the T-shaped steel pin makes the adjustment surfaces of the two tiles simultaneously fit onto the leveling surface of the leveling nut, thus achieving tile leveling.

[0004] However, during the dry-hanging process of stone cladding, the newly hung stone slabs need to be leveled with the already fixed stone slabs. Since the fixed stone slabs are already in place and cannot be moved, only the newly installed stone slabs can be moved. If the thickness of the newly installed stone slabs is different from that of the already installed stone slabs, and the thickness difference is large, when the narrower stone slab is placed between the two ends of the thicker stone slab, the leveling nuts and T-shaped steel pins of the tile leveling device can only be clamped between the two ends of the thicker stone slab, which cannot achieve leveling between the two stone slabs.

[0005] Furthermore, because tiling requires narrow gaps between tiles, the steel needles of tile levelers are relatively thin. However, dry-hanging stone cladding leaves wider gaps during construction, making it unsuitable for leveling with tile levelers.

[0006] The utility model patent "Dry-Hanging Stone Flatness Adjuster" (2016209250435) discloses a dry-hanging stone flatness adjuster that can adjust two stone slabs of different thicknesses. However, it is only suitable for adjusting a newly installed stone slab whose thickness is narrower than that of an already installed stone slab. When the thickness of the newly installed stone slab is wider than that of the already installed stone slab, and the already installed stone slab is located between the two ends of the newly installed stone slab, the baffle and the first rod in the aforementioned patent application can only be clamped at both ends of the newly installed stone slab, and cannot use the adjusted plane of the already installed stone slab as a reference to achieve leveling. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing leveling devices that cannot simultaneously level two stone slabs of different thicknesses, by providing a dry-hanging stone slab leveling device that can simultaneously level two stone slabs of different thicknesses.

[0008] This invention provides a leveling device for dry-hanging stone slabs, comprising an outer screw cylinder, a leveling nut, and a fixed leveling plate; a fixed leveling rod is fixedly installed at the other end of the outer screw cylinder, and the threaded hole of the leveling nut engages with the external thread of the outer screw cylinder; characterized in that: the outer screw cylinder has a cavity with one open end, an inner sleeve is inserted into the cavity of the outer screw cylinder and slides within the cavity; an inner screw rod is installed at the end of the inner sleeve facing the opening of the outer screw cylinder, the open end of the outer screw cylinder is rotatably engaged with a rotating cylinder, and a threaded blind hole is provided at the axis of the rotating cylinder, the threaded blind hole of the rotating cylinder engaging with the threaded inner screw rod; the outer screw... The end wall of the cylinder is also provided with a guide through hole corresponding to the movable leveling rod. The end wall of the inner sleeve is also provided with a guide through hole corresponding to the guide through hole of the outer screw cylinder. The inner sleeve is provided with a placement groove that communicates with its guide through hole. The inner end of the movable leveling rod passes through the guide through holes on the outer screw cylinder and the inner sleeve in sequence and is placed in the placement groove. The inner end of the movable leveling rod is connected to the pressure plate. The pressure plate and the end wall of the placement cavity of the inner sleeve are connected by a return spring. The fixed leveling rod and the movable leveling rod have an L-shaped rod structure. The horizontal rods of the fixed leveling rod and the movable leveling rod are close to each other, and the vertical rods are respectively facing outward.

[0009] The inner wall of the cavity of the outer screw cylinder is provided with two symmetrically distributed guide rails, which are distributed along the axis of the outer screw cylinder. The outer wall of the inner sleeve is provided with two guide grooves corresponding to the guide rails, and the guide rails are placed in the guide grooves and slide with them.

[0010] The outer end of the aforementioned rotating cylinder is fixedly connected to the handle.

[0011] The inner wall of the aforementioned outer screw cylinder cavity is provided with an annular groove arranged coaxially, and the outer wall of the rotating cylinder is provided with an annular slider. The annular slider is placed in the annular groove and rotates in cooperation with it.

[0012] The aforementioned annular groove is located on the wall of the open end of the outer screw cylinder. An end cap is installed at the open end of the outer screw cylinder, and a through hole is provided at the center of the end cap. The outer end of the rotating cylinder passes through the through hole of the end cap, and the end cap clamps the annular slider in the annular groove.

[0013] The aforementioned movable leveling rod is connected to the limiting mechanism and the one-way mechanism. The inner wall of the placement cavity of the inner sleeve is provided with two guide blind holes. Long strip-shaped sliding grooves are provided on both sides of the guide blind holes. Long strip-shaped guide through holes are provided on both side walls of the two guide blind holes and communicate with the long strip-shaped sliding grooves.

[0014] The aforementioned limiting mechanism includes a limiting block and a limiting guide plate. A limiting block is installed in a guide blind hole. The outer end of the limiting block is connected to the end wall of the guide blind hole via a compression spring. The limiting block rests against the inner end of the movable leveling rod, allowing the pressure plate to partially compress the return spring. Guide pins are installed on both sides of the limiting block. The guide pins pass through elongated guide holes on both sides of the guide blind hole and extend into elongated grooves. A limiting guide plate is installed in the elongated groove. The outer end of the limiting guide plate passes through the elongated groove and is fixedly connected to the inner wall of the cavity of the outer screw. The end of the limiting guide plate facing the guide pin of the limiting block has an inclined surface that slopes outward. The guide pin is placed on the inclined surface of the limiting guide plate. A guide groove is provided above the inclined surface and is arranged parallel to the movement direction of the inner sleeve.

[0015] The aforementioned one-way mechanism includes ratchet teeth and a ratchet bar. The portion of the movable leveling rod that extends into the inner sleeve is equipped with a ratchet bar, which faces the inner wall of the inner sleeve's placement cavity. The ratchet bar is located at another guide blind hole position of the inner sleeve, where ratchet teeth are installed. The ratchet teeth are connected to the inner wall of the guide blind hole by a tension spring. Guide pins are installed on the two side walls of the ratchet teeth. The guide pins pass through the elongated guide holes on the two side walls of the guide blind hole and extend into the elongated slide groove. A ratchet guide plate is installed in the elongated slide groove. The outer end of the ratchet guide plate passes through the elongated slide groove and is fixedly connected to the inner wall of the cylindrical cavity of the outer screw cylinder. The end of the ratchet guide plate facing the ratchet guide pin has an inclined surface, which is inclined inward. The guide pin rests against the lower end of the inclined surface of the ratchet guide plate. A guide plane is provided at the lower end of the inclined surface, and the guide plane is arranged parallel to the movement direction of the inner sleeve.

[0016] Compared with the prior art, the present invention has the following outstanding advantages: 1. This invention comprises a movable leveling rod and a fixed leveling plate. The inner end of the movable leveling rod passes through the guide holes on the outer screw and the inner sleeve in sequence and is placed in the placement groove. The inner end of the movable leveling rod is vertically fixedly connected to the pressure plate. The pressure plate is connected to the end wall of the placement cavity of the inner sleeve by a return spring. Therefore, the movable leveling rod can slide freely relative to the fixed leveling rod, and the vertical plates of the movable leveling rod and the fixed leveling plate can simultaneously rest against the back of two stone slabs of different thicknesses, thereby completing the leveling work of the two stone slabs.

[0017] 2. The movable leveling rod of this invention is connected to a limiting mechanism and a one-way mechanism. When the rotating cylinder drives the inner sleeve to move a certain distance towards the opening of the outer screw cylinder, the limiting mechanism and the one-way mechanism can activate, allowing the movable leveling rod to quickly move against the back of the stone slab. This allows the inner sleeve to move synchronously towards the opening of the outer screw cylinder without being affected by the return spring, instead of continuously rotating the rotating cylinder and allowing the inner sleeve to fully compress the return spring before driving the movable leveling rod. The limiting mechanism and the one-way mechanism reduce the number of rotations of the rotating cylinder, improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0019] Figure 2 This is a schematic diagram of the inner sleeve portion of Embodiment 1 of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention.

[0021] Figure 4 yes Figure 3 A magnified view of part A in the middle.

[0022] Figure 5 yes Figure 3 A magnified view of part B in the middle section.

[0023] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the present invention. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-3 As shown, Embodiment 1 of the present invention includes an outer screw 4, an inner sleeve 16, an inner screw 8, a leveling nut 5, a movable leveling rod 6, and a fixed leveling plate 7.

[0027] The outer screw cylinder 4 has a cylindrical cavity with one end open. The inner sleeve 16 is inserted into the cylindrical cavity of the outer screw cylinder 4 and slides in cooperation with it. The sliding cooperation is as follows: the inner wall of the cylindrical cavity of the outer screw cylinder 4 is provided with two symmetrically distributed guide rails, which are distributed along the axis of the outer screw cylinder 4. The outer wall of the inner sleeve 16 is provided with two guide grooves corresponding to the guide rails. The guide rails are placed in the guide grooves and slide in cooperation with them.

[0028] An inner screw 8 is installed at the end of the inner sleeve 16 facing the opening of the outer screw cylinder 4. The open end of the outer screw cylinder 4 is rotatably engaged with the rotating cylinder 2. A threaded blind hole is provided at the axis of the rotating cylinder 2, and the threaded blind hole of the rotating cylinder 2 is threadedly engaged with the inner screw 8. The outer end of the rotating cylinder 2 is fixedly connected to the handle 1. When the rotating cylinder 2 is rotated by the handle 1, the rotating cylinder 2 can drive the inner sleeve 16 to move along the guide rail through the inner screw 8.

[0029] In the optimized scheme, the inner wall of the cylindrical cavity of the outer screw cylinder 4 is provided with an annular groove arranged coaxially, and the outer wall of the rotating cylinder 2 is provided with an annular slider. The annular slider is placed in the annular groove and rotates in cooperation with it.

[0030] The annular groove is located on the wall of the open end of the outer screw cylinder 4. An end cap 3 is installed at the open end of the outer screw cylinder 4. A through hole is provided at the center of the end cap 3. The outer end of the rotating cylinder 2 passes through the through hole of the end cap 3. The end cap 3 clamps the annular slider in the annular groove.

[0031] The other end of the outer screw cylinder 4 is fixedly installed with a leveling rod 7. The other end wall of the outer screw cylinder 4 is also provided with a guide through hole corresponding to the movable leveling rod 6. The end wall of the inner sleeve 16 is also provided with a guide through hole corresponding to the guide through hole of the outer screw cylinder 4. The inner sleeve 16 is provided with a placement groove that communicates with its guide through hole.

[0032] The inner end of the movable leveling rod 6 passes through the guide holes on the outer screw cylinder 4 and the inner sleeve 16 in sequence and is placed in the placement groove. The inner end of the movable leveling rod 6 is vertically fixedly connected to the pressure plate 9. The pressure plate 9 and the end wall of the placement cavity of the inner sleeve 16 are connected by a return spring.

[0033] The fixed leveling rod 7 and the movable leveling rod 6 are L-shaped rod structures. The backs of the horizontal rods of the fixed leveling rod 7 and the movable leveling rod 6 are close together, and the vertical rods are facing outwards, so that the fixed leveling rod 7 and the movable leveling rod 6 form a T-shaped structure.

[0034] The outer wall of the other end of the external screw cylinder 4 is provided with external threads, and the center of the leveling nut 5 is provided with a threaded hole. The threaded hole of the leveling nut 5 is threadedly engaged with the external threads of the external screw cylinder 4. An annular leveling plate 17 is provided at the end of the leveling nut 5 facing the leveling rod.

[0035] In order to enable the vertical rod of the movable leveling rod 6 to automatically fit against the back of the dry-hanging stone slab, in this embodiment, the movable leveling rod 6 is connected to the limiting mechanism and the one-way mechanism. The limiting mechanism includes the limiting block 12 and the limiting guide plate 11. The inner wall of the placement cavity of the inner sleeve 16 is provided with two guide blind holes. The two sides of the guide blind holes are respectively provided with long strip-shaped sliding grooves. The two side walls of the two guide blind holes are respectively provided with long strip-shaped guide through holes that communicate with the long strip-shaped sliding grooves.

[0036] like Figure 4 As shown, a limiting block 12 is installed in one of the guide blind holes. The outer end of the limiting block 12 is connected to the end wall of the guide blind hole through a compression spring. The limiting block 12 presses against the inner end of the movable leveling rod 6, so that the pressure plate 9 can not completely compress the return spring, and the return spring still maintains a certain amount of compression. Guide pins 13 are installed on the two side walls of the limiting block 12 respectively. The guide pins 13 pass through the elongated guide holes on the two side walls of the guide blind hole and extend into the elongated slide groove. A limiting guide plate 11 is installed in the elongated slide groove. The outer end of the limiting guide plate 11 passes through the elongated slide groove and is fixedly connected to the inner wall of the cylindrical cavity of the outer screw cylinder 4. The end of the limiting guide plate 11 facing the limiting block 12 and the guide pin 13 is provided with an inclined surface. The inclined surface is inclined outward. The guide pin 13 is placed on the inclined surface of the limiting guide plate 11. A guide slide groove is provided above the inclined surface. The guide slide groove is arranged parallel to the movement direction of the inner sleeve 16. When the inner sleeve 16 moves toward the opening of the outer screw 4, the guide pin 13 on the limiting block 12 gradually moves outward along the inclined surface of the limiting guide plate 11, causing the limiting block 12 to retract into the guide blind hole. When the limiting block 12 is completely retracted into the guide blind hole, the guide pin 13 on the limiting block 12 enters the guide groove of the limiting guide plate 11 and moves along the guide groove.

[0037] like Figure 5 As shown, the one-way mechanism includes ratchet 15 and a ratchet bar 10. The portion of the movable leveling rod 6 that extends into the inner sleeve 16 is fitted with the ratchet bar 10, which faces the inner wall of the inner sleeve 16's placement cavity. At the other guide blind hole position of the inner sleeve 16, where the ratchet bar 10 is located, ratchet 15 is installed inside. The ratchet 15 is connected to the inner wall of the guide blind hole by a tension spring. When the ratchet 15 is inserted into the groove of the ratchet bar 10, the movable leveling rod 6 can only move towards one end of the inner sleeve 16 and cannot pull the inner sleeve 16 out. That is, when the inner sleeve 16 moves towards the opening end of the outer screw cylinder 4, the ratchet bar 10 and the ratchet 15 can lock the inner sleeve 16 and the movable leveling rod 6 in one direction, causing the inner sleeve 16 to drive the movable leveling rod 6 to move synchronously.

[0038] Guide pins 13 are installed on both sides of the ratchet 15. The guide pins 13 pass through the elongated guide holes on both sides of the guide blind hole and extend into the elongated slide groove. A ratchet guide plate 14 is installed in the elongated slide groove. The outer end of the ratchet guide plate 14 passes through the elongated slide groove and is fixedly connected to the inner wall of the cylindrical cavity of the outer screw cylinder 4. The end of the ratchet guide plate 14 facing the guide pins 13 of the ratchet 15 is provided with an inclined surface. The inclined surface is inclined inward. The guide pin 13 rests against the lower end of the inclined surface of the ratchet guide plate 14. A guide plane is provided at the lower end of the inclined surface. The guide plane is arranged parallel to the movement direction of the inner sleeve 16. When the inner sleeve 16 moves toward the opening of the outer screw 4, the guide pin 13 on the ratchet 15 gradually moves inward along the inclined surface of the ratchet guide plate 14, so that the ratchet 15 is exposed outside the guide blind hole. When the ratchet 15 is fully inserted into the tooth groove of the ratchet 10, the guide pin 13 on the ratchet 15 enters the guide plane at the lower end of the ratchet guide plate 14 and moves along the guide plane.

[0039] In Embodiment 1, the back sides of the horizontal bars of the fixed leveling rod 7 and the movable leveling rod 6 are close together, while in Embodiment 2, as... Figure 6 As shown, the sides of the horizontal bars of the fixed leveling rod 7 and the movable leveling rod 6 are close together, and the upper and lower end faces of the horizontal bars of the fixed leveling rod 7 and the movable leveling rod 6 are flush with each other.

[0040] like Figure 7 As shown in Embodiment 3, the horizontal bars of the fixed leveling rod 7 and the movable leveling rod 6 are semi-cylindrical. The semi-cylindrical horizontal bars of the fixed leveling rod 7 and the movable leveling rod 6 are joined together to form a cylindrical rod body. The horizontal bar of the movable leveling rod 6 extends into the inner sleeve 16 and connects to the ratchet 10. The fixed leveling rod 7 is detachably connected to the outer threaded cylinder 4, and the movable leveling rod 6 is also detachably connected to the ratchet 10. The detachable connection can be a threaded fit or other connection methods.

[0041] The operation process is as follows: Insert the movable leveling rod 6 and the fixed leveling rod 7 of the present invention into the gap between the two stone slabs, rotate the present invention so that the vertical rod of the movable leveling rod 6 is located on the back of the newly installed stone slab, and the vertical rod of the fixed leveling rod 7 is located on the back of the fixed stone slab. When the front end of the newly installed stone slab is behind the front end of the already fixed stone slab, rotate the leveling nut 5 so that the leveling plate of the leveling nut 5 clamps the already fixed stone slab with the vertical rod of the fixed leveling rod 7. The leveling plate is tightly attached to the outer end face of the already fixed stone slab. At this time, rotate the rotating cylinder 2 so that the rotating cylinder 2 drives the inner sleeve 16 to move along the guide rail to the opening of the outer screw cylinder 4 through the inner screw rod 8. During the movement, the limiting mechanism is activated so that the vertical rod of the movable leveling rod 6 is close to the back of the newly installed stone slab. The one-way mechanism is activated so that the inner sleeve 16 and the movable leveling rod 6 can move synchronously to the opening of the outer screw rod, thereby pulling the newly installed stone slab outward and tightly attaching it to the leveling plate, so that it is on the same plane as the already fixed stone slab.

[0042] When the front face of the newly installed stone slab is in front of the front face of the fixed stone slab, rotate the leveling nut 5 so that the leveling plate of the leveling nut 5 and the vertical rod of the leveling rod 7 clamp the fixed stone slab. When the leveling plate moves toward the fixed stone slab, it presses the front face of the newly installed stone slab against the front face of the fixed stone slab, so that the two are leveled.

[0043] Because the movable leveling rod 6 of this invention can be stretched or contracted from the inner sleeve 16, it is possible to level two stone slabs of different thicknesses.

[0044] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes made to it without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. A leveling device for dry-hanging stone slabs, comprising an outer screw cylinder (4), a leveling nut (5), and a fixed leveling plate (7); a fixed leveling rod (7) is fixedly installed at the other end of the outer screw cylinder (4), and the threaded hole of the leveling nut (5) is threadedly engaged with the external thread of the outer screw cylinder (4); characterized in that: The outer screw cylinder (4) has a cavity with one open end. The inner sleeve (16) is inserted into the cavity of the outer screw cylinder (4) and slides within the cavity of the outer screw cylinder (4). An inner screw (8) is installed at the end of the inner sleeve (16) facing the opening of the outer screw cylinder (4). The open end of the outer screw cylinder (4) rotates with the rotating cylinder (2). A threaded blind hole is provided at the axis of the rotating cylinder (2), and the threaded blind hole of the rotating cylinder (2) is threaded with the inner screw (8). The end wall of the outer screw cylinder (4) is also provided with a guide through hole corresponding to the movable leveling rod (6). The end wall of the inner sleeve (16) is also provided with a guide through hole corresponding to the outer screw. The guide through hole of the cylinder (4) corresponds to the guide through hole, and the inner sleeve (16) is provided with a placement groove that communicates with its guide through hole; the inner end of the movable leveling rod (6) passes through the guide through holes on the outer screw cylinder (4) and the inner sleeve (16) in sequence and is placed in the placement groove. The inner end of the movable leveling rod (6) is connected to the pressure plate (9). The pressure plate (9) and the end wall of the placement cavity of the inner sleeve (16) are connected by a reset spring; the fixed leveling rod (7) and the movable leveling rod (6) have an L-shaped rod structure. The horizontal rods of the fixed leveling rod (7) and the movable leveling rod (6) are close to each other, and the vertical rods are respectively facing outward.

2. The leveling device for dry-hanging stone slabs according to claim 1, characterized in that: The inner wall of the cavity of the outer screw (4) is provided with two symmetrically distributed guide rails. The guide rails are distributed along the axis of the outer screw (4). The outer wall of the inner sleeve (16) is provided with two guide grooves corresponding to the guide rails. The guide rails are placed in the guide grooves and slide with them.

3. The leveling device for dry-hanging stone slabs according to claim 1, characterized in that: The outer end of the rotating cylinder (2) is fixedly connected to the handle (1).

4. The leveling device for dry-hanging stone slabs according to claim 1, characterized in that: The inner wall of the cavity of the outer screw cylinder (4) is provided with an annular groove arranged coaxially, and the outer wall of the rotating cylinder (2) is provided with an annular slider. The annular slider is placed in the annular groove and rotates in cooperation with it.

5. The leveling device for dry-hanging stone slabs according to claim 4, characterized in that: The annular groove is located on the wall of the open end of the outer screw cylinder (4). An end cap (3) is installed at the open end of the outer screw cylinder (4). A through hole is provided at the center of the end cap (3). The outer end of the rotating cylinder (2) passes through the through hole of the end cap (3). The end cap (3) clamps the annular slider in the annular groove.

6. The leveling device for dry-hanging stone slabs according to claim 1, characterized in that: The movable leveling rod (6) is connected to the limiting mechanism and the one-way mechanism. The inner wall of the placement cavity of the inner sleeve (16) is provided with two guide blind holes. The two sides of the guide blind holes are provided with long strip-shaped sliding grooves. The two side walls of the two guide blind holes are provided with long strip-shaped guide through holes that communicate with the long strip-shaped sliding grooves.

7. The leveling device for dry-hanging stone slabs according to claim 6, characterized in that: The limiting mechanism includes a limiting block (12) and a limiting guide plate (11). The limiting block (12) is installed in a guide blind hole. The outer end of the limiting block (12) is connected to the end wall of the guide blind hole through a compression spring. The limiting block (12) presses against the inner end of the movable leveling rod (6), so that the pressure plate (9) can not fully compress the reset spring. Guide pins (13) are respectively installed on the two side walls of the limiting block (12). The guide pins (13) extend into the long strip guide holes on the two side walls of the guide blind hole. Inside the long strip groove, a limiting guide plate (11) is installed. The outer end of the limiting guide plate (11) passes through the long strip groove and is fixedly connected to the inner wall of the cavity of the outer screw (4). One end of the limiting guide plate (11) facing the guide pin (13) of the limiting block (12) is provided with an inclined surface. The inclined surface is inclined to the outer end. The guide pin (13) is placed on the inclined surface of the limiting guide plate (11). A guide groove is provided above the inclined surface. The guide groove is arranged parallel to the movement direction of the inner sleeve (16).

8. The leveling device for dry-hanging stone slabs according to claim 6, characterized in that: The one-way mechanism includes ratchet (15) and a ratchet bar (10). The part of the movable leveling rod (6) that extends into the inner sleeve (16) is equipped with a ratchet bar (10). The ratchet bar (10) faces the inner wall of the inner sleeve (16) placement cavity. The ratchet bar (10) is located at the other guide blind hole position of the inner sleeve (16), and a ratchet (15) is installed inside it. The ratchet (15) is connected to the inner wall of the guide blind hole by a tension spring. Guide pins (13) are respectively installed on the two side walls of the ratchet (15). The guide pins (13) pass through the two sides of the guide blind hole. The elongated guide hole on the wall extends into the elongated slide groove. A ratchet guide plate (14) is installed in the elongated slide groove. The outer end of the ratchet guide plate (14) passes through the elongated slide groove and is fixedly connected to the inner wall of the cylindrical cavity of the outer screw (4). One end of the ratchet guide plate (14) facing the ratchet (15) guide pin (13) is provided with an inclined surface. The inclined surface is inclined inward. The guide pin (13) rests against the lower end of the inclined surface of the ratchet guide plate (14). The lower end of the inclined surface is provided with a guide plane. The guide plane is arranged parallel to the movement direction of the inner sleeve (16).

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