Self-inspection type retaining expansion fixing piece for assembly type wear-resistant plate for coal storage silo

Abstract

The utility model discloses an assembly type wear-resistant plate self-checking type retaining expansion fixing piece for a coal storage silo, which comprises a screw main body, a thin fixing rod arranged on the side part of the screw main body, a fishbone tip arranged on the periphery of the thin fixing rod, an alloy screw knocking thick sheet arranged at the other end of the screw main body, an expansion sleeve sleeved outside the screw main body, and an expansion bolt arranged on the expansion sleeve. One end of the expansion sleeve is provided with a knocking cushion head, the other end of the expansion sleeve is provided with an anti-skid threaded cushion layer, and the end, close to the knocking cushion head, of the side portion of the expansion sleeve is provided with a fixing mechanism in a sleeved mode. The defects of a traditional T-shaped American expansion nail are effectively overcome by means of unique design, the anti-skid threaded cushion layer on the side portion of the expansion sleeve is of a threaded structure, the contact friction area with the inner wall of a silo is greatly increased, the fishbone tip on the side portion of the screw body is in a fishbone shape, stable resistance can be formed after the fishbone tip is embedded into a concrete base layer, and the retaining function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial and civil construction, in particular to an assembled wear-resistant plate self-checking anti-retreat expansion fixing part for a coal storage silo. Background Art

[0002] In the coal industry's operating chain, coal storage silos have long been key storage facilities, shouldering the important tasks of temporary storage of raw coal and transfer buffering. With the large-scale development of coal mining, coal storage silos have been widely built and popularized in coal mining enterprises due to their compact footprint, considerable reserves, and easy management. As the core entity of raw coal mining, coal storage silos play a vital role.

[0003] After searching, the Chinese patent number CN220522098U discloses a building structure for quickly reinforcing and repairing the inner wall of a coal silo and having corrosion resistance and wear resistance. From the inner wall of the coal silo to the direction away from the inner wall of the coal silo, it includes the inner wall of the coal silo, a grouting layer, and a wear-resistant layer; the inner wall of the coal silo is installed with a fixing part, and a fixed template is installed on the fixing part. The template forms a wear-resistant layer, and a grouting layer is formed between the wear-resistant layer and the inner wall of the coal silo; the template includes a mesh frame and a wear-resistant material filled around the mesh frame; the grouting layer is a fluid cement-based slurry, including cement-based grouting material and self-compacting concrete. This patent is to provide a building structure for quickly reinforcing and repairing the inner wall of a coal silo and having corrosion resistance and wear resistance, so as to alleviate the technical problems existing in the prior art that the repair process is inconvenient and time-consuming, such as re-pouring concrete or high-strength grouting material.

[0004] During the use of the above-mentioned device, when T-shaped American expansion nails are used and the strength of the base layer is low, hammering can easily cause the alloy screws to be hit too deep and the base layer around the expansion sleeve hole to vibrate and disturb, resulting in damage to the base layer around the edge of the hole, resulting in insufficient anchoring force. Therefore, an assembled wear-resistant plate self-checking anti-retreat expansion fixing for coal storage silos is proposed. Summary of the Invention

[0005] The purpose of the utility model is to solve the problem in the above-mentioned technology that when using T-shaped American expansion nails and encountering low strength of the base layer, hammering easily causes the alloy screws to be hit too deep and the base layer around the expansion sleeve hole to cause vibration and disturbance, resulting in damage to the base layer around the edge of the hole, resulting in insufficient anchoring force. The utility model proposes an assembled wear-resistant plate self-checking anti-retreat expansion fixing part for coal storage silos.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A self-checking, anti-retreat expansion fixing part of an assembled wear-resistant plate for a coal storage silo comprises a screw body, a thin fixing rod is provided on the side of the screw body, a fishbone tip is provided on the periphery of the thin fixing rod, an alloy screw striking thick plate is provided on the other end of the screw body, an expansion sleeve is sleeved on the outside of the screw body, a striking pad is provided on one end of the expansion sleeve, and an anti-slip threaded pad is provided on the other end of the expansion sleeve, a fixing mechanism is sleeved on one end of the expansion sleeve close to the striking pad, and the fixing mechanism is used to ensure that the length of the portion of the expansion sleeve exposed to the outside of the coal storage silo is constant, which significantly improves the anchoring strength compared to a smooth round sleeve; the fishbone tip on the side of the screw body is in the shape of a fishbone, which can form a stable resistance after being embedded in the concrete base, thereby realizing the anti-retreat function.

[0008] The above technical solution further includes:

[0009] The fixing mechanism includes a first pad arranged outside the expansion sleeve, one end of the first pad is a striking end, the other side of the first pad is a contact end, and a first hole is provided inside the first pad for being sleeved outside the expansion sleeve.

[0010] The fixing mechanism includes a second pad arranged on the outside of the expansion sleeve, one end of the second pad is a striking end, and the other end of the second pad is used to resist the outer wall of the coal storage silo. A second hole for being mounted on the outside of the expansion sleeve is provided inside the coal storage silo. The diameter of one end of the striking pad head is smaller than that of the alloy screw striking the thick plate. When the screw body finally enters the interior of the coal storage silo, the alloy screw striking the thick plate just resists one side of the striking pad head.

[0011] The anti-skid threaded pad is provided with threads on the outside, and the anti-skid threaded pad expands toward the outside when the screw body passes through it.

[0012] One side of the coal storage silo is cast with high-strength grouting material, and a plate hanging part is arranged inside the high-strength grouting material. The plate hanging part is used to hang the wear-resistant plate for coal storage. After the self-checking anti-retraction fixing part is installed, the appearance is neat and beautiful and does not affect the structure. Due to its high strength and excellent anchoring force, the self-checking anti-retraction fixing part can maintain stability and durability for a long time during use.

[0013] The inner diameter of the anti-slip threaded pad should be smaller than the diameter of the main part of the expansion sleeve, the diameter of the first hole opened in the first pad should be close to the expansion sleeve, and the diameter of the second hole opened in the second pad should also be close to the expansion sleeve. With the help of the first pad or the second pad, construction personnel can clearly judge the installation status and effectively avoid the defects of anchoring force fluctuation caused by different lengths of exposed base layer and different expansion angles after conventional expansion nails are struck.

[0014] The side of the thin fixing rod is provided with multiple groups of fishbone tips arranged in an inclined shape. The fishbone tips on the side of the screw body are in the shape of fish bones. After being embedded in the concrete base, they can form a stable resistance and realize the anti-retreat function.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model's assembled wear-resistant plate self-checking anti-retreat expansion fixing for coal storage silos effectively overcomes the disadvantages of traditional T-shaped American expansion nails with its unique design. The anti-slip threaded pad on the side of the expansion sleeve adopts a threaded structure, which greatly increases the contact friction area with the inner wall of the silo and significantly improves the anchoring strength compared to the smooth round sleeve; the fishbone tip on the side of the screw body is fishbone-shaped, which can form a stable resistance after being embedded in the concrete base, realizing the anti-retreat function, ensuring that under different base strength conditions, even in complex working conditions such as low base strength, the problem of insufficient anchoring force can be avoided.

[0017] 2. This fixture features an innovative self-checking function. Using the first or second spacer, construction workers can clearly determine the installation status, effectively avoiding the anchoring force fluctuations caused by varying lengths of exposed base and expansion angles after conventional expansion screws are hammered in. Furthermore, unlike traditional T-shaped American expansion screws, the hammering process does not cause vibration, disturbance, or damage to the base around the internal hole in the silo. This maximizes the integrity of the base, ensuring that its load-bearing and anchoring performance are not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a self-checking anti-retraction expansion fixing member of an assembled wear-resistant plate for a coal storage silo proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of the fixing mechanism structure of a self-checking anti-retraction expansion fixing member of an assembled wear-resistant plate for a coal storage silo in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a fishbone-shaped alloy screw of a self-checking anti-retraction expansion fixing member for an assembled wear-resistant plate for a coal storage silo in the utility model;

[0021] Figure 4 This is a schematic diagram of the expansion sleeve structure of a self-checking anti-retraction expansion fixture of an assembled wear-resistant plate for a coal storage silo in the utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of the first pad of a self-checking anti-retraction expansion fixing member of an assembled wear-resistant plate for a coal storage silo in the utility model;

[0023] Figure 6The utility model is a schematic diagram of the overall structure of the second pad of the self-checking anti-retreat expansion fixing member of the assembled wear-resistant plate for the coal storage silo.

[0024] In the figure: 1. Screw body; 2. Thin fixing rod; 3. Fishbone tip; 4. Alloy screw striking thick plate; 5. Expansion sleeve; 6. Striking pad; 7. Anti-slip threaded pad; 8. First pad; 9. First hole; 10. Second pad; 11. Second hole; 12. Silo for coal storage; 13. Wear-resistant plate for coal storage; 14. High-strength grouting material; 15. Plate hanging parts. DETAILED DESCRIPTION

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

[0026] See also Figures 1-6 As shown, the utility model is a self-checking anti-retreat expansion fixing part of an assembled wear-resistant plate for a coal storage silo, comprising a screw body 1, a thin fixing rod 2 is provided on the side of the screw body 1, a fishbone tip 3 is provided on the periphery of the thin fixing rod 2, an alloy screw striking thick plate 4 is provided at the other end of the screw body 1, an expansion sleeve 5 is provided on the outside of the screw body 1, a striking pad 6 is provided at one end of the expansion sleeve 5, an anti-slip threaded pad 7 is provided at the other end of the expansion sleeve 5, and a fixing mechanism is provided on one end of the side of the expansion sleeve 5 close to the striking pad 6, which is used to ensure that the length of the portion of the expansion sleeve 5 exposed outside the coal storage silo 12 is constant.

[0027] In one embodiment, for the above-mentioned fixing mechanism, the fixing mechanism includes a first pad 8 arranged on the outside of the expansion sleeve 5, one end of the first pad 8 is a striking end, and the other side of the first pad 8 is a resistance end, and a first hole 9 for being sleeved on the outside of the expansion sleeve 5 is provided inside the first pad 8.

[0028] In this embodiment, by providing a self-checking pad, whether it is qualified can be judged by visual inspection, which is convenient and quick.

[0029] In one embodiment, for the above-mentioned fixing mechanism, the fixing mechanism includes a second pad 10 arranged on the outside of the expansion sleeve 5, one end of the second pad 10 is a knocking end, and the other end of the second pad 10 is used to resist the outer wall of the coal storage silo 12, and a second hole 11 for being mounted on the outside of the expansion sleeve 5 is provided inside the coal storage silo 12.

[0030] In one embodiment, for the above-mentioned striking pad 6, the diameter of one end of the striking pad 6 is smaller than the alloy screw striking thick plate 4, and when the screw body 1 finally enters the interior of the coal storage silo 12, the alloy screw striking thick plate 4 just hits one side of the striking pad 6.

[0031] In this embodiment, the striking pad 6 can be provided to well control the distance between the alloy screws, thereby preventing the exposed parts of the alloy screws from being of different lengths.

[0032] In one embodiment, for the above-mentioned anti-slip threaded washer 7 , threads are provided on the outside of the anti-slip threaded washer 7 , and the anti-slip threaded washer 7 expands outwards when the screw body 1 passes through it.

[0033] In this embodiment, the anti-skid threaded pad 7 provided at the end of the thin screw 2 can increase the friction force on the interior of the coal storage silo 12 after expansion to prevent sliding.

[0034] In one embodiment, for the above-mentioned coal storage silo 12, a high-strength grouting material 14 is poured on one side of the coal storage silo 12, and a plate hanging part 15 is provided inside the high-strength grouting material 14. The plate hanging part 15 is used to hang the coal storage wear-resistant plate 13.

[0035] In this embodiment, grouting is provided on one side of the coal storage silo 12 to facilitate injection when fixing the plate later.

[0036] In one embodiment, for the above-mentioned anti-slip threaded pad 7, the diameter inside the anti-slip threaded pad 7 is smaller than the diameter of the main part of the expansion sleeve 5, the diameter of the first hole 9 opened inside the first pad 8 is close to the expansion sleeve 5, and the diameter of the second hole 11 opened inside the second pad 10 is also close to the expansion sleeve 5. Multiple groups of fishbone tips 3 arranged in an inclined shape are provided on the side of the thin fixing rod 2.

[0037] In this embodiment, the inner diameter of the anti-slip threaded pad 7 is set just to be unable to pass through the expansion sleeve 5, so that it can expand under subsequent knocking.

[0038] The utility model relates to an assembled wear-resistant plate self-checking anti-retraction expansion fixing member for coal storage silos, and its working principle is as follows:

[0039] At the beginning of the operation, the inner wall of the silo 12 is cleaned first, and then the drilling operation is carried out according to the design requirements. The depth and diameter of the drilled hole are precisely adapted to the specifications of the expansion sleeve 5. Next, the thin fixing rod 2, the fishbone tip 3 and the screw body 1 attached to the surface are passed through and inserted into the expansion sleeve 5. Note that the screw body 1 needs to be placed with the anchor end facing forward. Then, the first pad 8 or the second pad 10 is inserted from the anchor end of the expansion sleeve 5 until it reaches the non-threaded end of the expansion sleeve 5, thus completing the assembly. The assembled whole parts are accurately placed on the pre-measured points on the outer wall of the silo 12. The construction workers hold the fixing parts firmly with one hand and use a hammer with the other hand to hammer the alloy screw on the side of the screw body 1 to knock the thick piece 4. The hammering is continued until the first pad 8 is tightly pressed against the outer wall of the silo 12.

[0040] During the hammering process, with the help of the impact force applied by the hammer, the screw body 1 continues to advance forward along the axial direction of the expansion sleeve 5, gradually approaching the inner wall of the silo 12. At the same time, along with the hammering action of the alloy screw hitting the thick sheet 4, the opening of the anti-slip threaded pad 7 on the side of the expansion sleeve 5 gradually opens outward and expands, and with the help of increased friction and close fit with the inner wall of the silo 12, the screw body 1 is firmly anchored to the base layer of the silo 12. It is worth mentioning that the fishbone tip 3 set on the side of the screw body 1 has a fishbone-shaped structure. Once embedded in the concrete base of the silo 12, it can form effective resistance by virtue of its shape and achieve the effect of stopping retreat. The anti-slip threaded pad 7 on the side of the expansion sleeve 5 adopts a threaded design. Compared with the common round sleeves on the market, it significantly increases the contact friction surface with the inner wall of the silo 12, greatly improving the anchoring strength.

[0041] Furthermore, the first or second pad 8, 10 in the fixing mechanism features a unique self-checking function. Specifically, the installation is deemed satisfactory when the second pad 10 is firmly pressed against the surface of the silo 12. This design cleverly addresses the drawback of conventional expansion screws, which leave varying lengths of exposed substrate after hammering. It effectively avoids fluctuations in anchoring force caused by inconsistent expansion angles, and prevents disturbance and damage to the substrate surrounding the internal holes of the silo 12 caused by the hammering process. In actual construction, according to the on-site engineering conditions and design specifications, a plum blossom-shaped distribution method is adopted for the inner wall of the silo 12, and the installation operations are carried out one by one according to the above-mentioned established assembly process and installation points. Through the assembly and matching of the screw body 1 and the expansion sleeve 5, the base layer of the silo 12 and the wear-resistant plate 13 can be firmly anchored and connected into an organic whole. Subsequently, high-strength grouting material 14 is poured to successfully construct a stable structure in which the base layer of the silo 12 - the reinforced bonding layer of the high-strength grouting material 14 - the wear-resistant plate 13 plate layers are closely connected and coordinated in force, effectively reducing the risk of falling off.

[0042] After completing the installation of the screw body 1, the installation of the plate hanger 15, the installation of the wear-resistant plate 13 and the pouring of the high-strength grouting material 14 are carried out in sequence until the high-strength grouting material 14 is finally finalized and the entire installation process is successfully completed.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-checking anti-retraction expansion fixing member for assembled wear-resistant plate for coal storage silo, characterized in that: The invention comprises a screw body (1), a thin fixing rod (2) is provided on the side of the screw body (1), a fishbone tip (3) is provided on the periphery of the thin fixing rod (2), an alloy screw striking thick plate (4) is provided on the other end of the screw body (1), an expansion sleeve (5) is sleeved on the outside of the screw body (1), a striking pad (6) is provided on one end of the expansion sleeve (5), an anti-slip threaded pad (7) is provided on the other end of the expansion sleeve (5), and a fixing mechanism is sleeved on one end of the expansion sleeve (5) near the striking pad (6), and the fixing mechanism is used to ensure that the length of the portion of the expansion sleeve (5) exposed outside the coal storage silo (12) is constant; After the inner wall of the silo (12) is cleaned, a hole is drilled thereon. The drilled hole is adapted to the size of the expansion sleeve (5). The thin fixing rod (2), the fishbone tip (3) and the screw body (1) attached to the surface of the screw body are passed through and inserted into the expansion sleeve (5). The screw body (1) needs to be placed with the anchor end facing forward. The anchor end of the expansion sleeve (5) is passed through the first pad (8) or the second pad (10) and reaches the non-threaded end of the expansion sleeve (5). The assembled whole component is placed at a point on the outer wall of the silo (12) that has been measured and determined in advance. The alloy screw on the side of the screw body (1) is hammered to knock the thick piece (4). The hammering is continued until the first pad (8) is tightly pressed against the outer wall of the silo (12).

2. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 1 is characterized in that: The fixing mechanism comprises a first pad (8) arranged outside the expansion sleeve (5), one end of the first pad (8) being a striking end, the other side of the first pad (8) being a contact end, and a first hole (9) for being sleeved on the outside of the expansion sleeve (5) being arranged inside the first pad (8).

3. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 1 is characterized in that: The fixing mechanism comprises a second pad (10) arranged outside the expansion sleeve (5), one end of the second pad (10) being a striking end, and the other end of the second pad (10) being used to resist the outer wall of a coal storage silo (12), and a second hole (11) for being sleeved on the outside of the expansion sleeve (5) is provided inside the coal storage silo (12).

4. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 1 is characterized in that: The diameter of one end of the striking pad head (6) is smaller than the alloy screw striking thick piece (4), and when the screw body (1) finally enters the interior of the coal storage silo (12), the alloy screw striking thick piece (4) just contacts one side of the striking pad head (6).

5. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 1 is characterized in that: The anti-skid threaded pad (7) is provided with threads on the outside, and the anti-skid threaded pad (7) expands outwards when the screw body (1) passes through it.

6. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 1 is characterized in that: A high-strength grouting material (14) is poured on one side of the coal storage silo (12), and a plate hanging member (15) is provided inside the high-strength grouting material (14). The plate hanging member (15) is used to hang the coal storage wear-resistant plate (13).

7. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 1 is characterized in that: The inner diameter of the anti-slip threaded cushion layer (7) is smaller than the diameter of the main body of the expansion sleeve (5).

8. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 2 is characterized in that: The diameter of the first hole (9) opened inside the first cushion block (8) is close to that of the expansion sleeve (5).

9. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 3 is characterized in that: The diameter of the second hole (11) opened inside the second cushion block (10) is also close to that of the expansion sleeve (5).

10. The self-checking anti-retraction expansion fixing member for a coal storage silo according to claim 1, characterized in that: The side of the thin fixing rod (2) is provided with multiple groups of fishbone tips (3) arranged in an oblique manner.

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