High-strength combined expansion bolt anchoring structure
By introducing positioning and adjustment components into the expansion bolts, the problem of uneven force caused by the tilt of the expansion tube is solved, achieving high-strength anchoring and stable connection of the expansion bolts, and improving installation accuracy and anti-slip performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional expansion bolts have gaps between the hole and the expansion tube during installation, causing the expansion tube to tilt, resulting in uneven stress, reduced anchoring effect and connection stability.
Positioning and adjusting components, including positioning blocks, locking blocks, return springs, locking grooves, and threaded rods, are used to ensure that the expansion tube remains vertical during installation. Trapezoidal blocks and triangular blocks are used to increase friction and anchoring force, preventing the expansion tube from shifting or shrinking.
It improves the installation stability and anchoring effect of expansion bolts, ensures uniform expansion of expansion tubes, enhances connection stability and anti-slip performance, and improves the long-term stability of anchoring force.
Smart Images
Figure CN224093656U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of expansion bolt anchoring, especially to a high-strength combined expansion bolt anchoring structure. BACKGROUND
[0002] In modern construction and various engineering fields, expansion bolts are widely used as a common mechanical anchoring connector due to their convenient installation and strong applicability. Traditional expansion bolts are mainly composed of a bolt, an expansion tube, a nut and a washer. The expansion tube is expanded in the base body hole by tightening the bolt, and the connected parts are fixed by the friction and extrusion force generated by expansion.
[0003] However, taking the traditional straight cylindrical expansion tube as an example, during installation, it is usually directly inserted into the hole in the foundation along with the expansion bolt. Due to the inevitable gap between the hole diameter and the expansion tube diameter, when the expansion bolt applies force to expand the expansion tube, the expansion tube will be in an inclined state due to uneven extrusion force, which will cause uneven stress between the expansion tube and the bolt and the foundation, reduce the anchoring effect of the expansion bolt, and affect the stability of the connected parts. Therefore, a high-strength combined expansion bolt anchoring structure is proposed to solve the above problems. SUMMARY
[0004] To make up for the above shortcomings, the utility model provides a high-strength combined expansion bolt anchoring structure, which aims to improve the problem of "traditional straight cylindrical expansion tube installation, due to the gap between the hole and the expansion tube, the expansion tube will be inclined, causing uneven stress on the expansion tube and the bolt, reducing the anchoring effect" in the prior art.
[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a high-strength combined expansion bolt anchoring structure, including expansion bolt body, the expansion pipe of setting in the outer wall of expansion bolt body, the washer of setting in the outer wall of expansion bolt body and being located above expansion pipe and the nut of screwing on the outer wall of expansion bolt body and being located above washer, the positioning assembly that is set between expansion pipe and washer supports expansion pipe and makes it stable installation, the positioning assembly includes the clamping groove of setting in the left and right sides of expansion pipe near top and the locating block of respectively clamping in the left and right clamping groove, the mounting groove is set in the inner wall of two groups of clamping groove top, the sliding slot is set in the outer side of two groups of locating block top near expansion pipe, the round groove is set in the bottom of two groups of sliding slots, the two groups of clamping blocks that the inner side top respectively clamping in the inner wall of corresponding mounting groove are slidably connected in the inner wall of two groups of sliding slots, the two groups of clamping blocks top are fixedly connected with the slide rod that penetrates and is slidably connected in the locating block top, the opening that respectively penetrates the locating block top is set in the inner wall of two groups of sliding slot top near the inner side, the inner side of two groups of clamping blocks all extend upwards and respectively from the opening of the inner wall of corresponding sliding slot top, the bottom of two groups of clamping blocks is elastically connected with locating block through reset spring, and the reset spring is set in the inner wall of round groove and is fixedly connected in the bottom of corresponding two groups of locating blocks.
[0006] As a further description of the above technical solution:
[0007] The bottom of two groups of locating blocks is provided with adjusting assembly, which is used to adjust the angle of two groups of locating blocks and expansion pipe to prevent the deviation of expansion pipe.
[0008] As a further description of the above technical solution:
[0009] The adjusting assembly includes two groups of receiving grooves respectively set in the middle of the bottom of the locating block and two groups of positioning discs respectively inserted into the inner wall of the receiving groove, and the top of the two groups of positioning discs is fixedly connected with a threaded rod, and the two groups of threaded rods are respectively penetrated and rotationally connected at the top of the two groups of locating blocks.
[0010] As a further description of the above technical solution:
[0011] The inner side of two groups of locating blocks is arc-shaped and matched with the arc-shaped inner wall of the expansion pipe, and the top of the two groups of slide rods is fixedly connected with a pressing block extending outward from the outer side of the slide rod.
[0012] As a further description of the above technical solution:
[0013] The two groups of clamping blocks are L-shaped, and the upward extension of the inner side of the two groups of mounting grooves and clamping blocks is arc-shaped.
[0014] As a further description of the above technical solution:
[0015] The top end of the gasket and the nut is fixedly connected with a plurality of groups of annularly arranged trapezoidal blocks, the bottom end of the nut is provided with a plurality of groups of trapezoidal grooves corresponding to the plurality of groups of trapezoidal blocks at the top end of the gasket, and the plurality of groups of trapezoidal blocks at the top end of the gasket are respectively clamped on the inner walls of the plurality of groups of trapezoidal grooves at the bottom end of the nut, and the plurality of groups of trapezoidal blocks and the plurality of groups of trapezoidal grooves are all provided in a trapezoidal shape.
[0016] As a further description of the above technical solution:
[0017] The bottom of the expansion pipe and the expansion bolt body is provided with a locking assembly, the locking assembly comprises a circular ring sleeve sleeved on the outer wall of the bottom of the expansion bolt body, the inner wall of the bottom of the expansion pipe is provided with a positioning groove clamped on the outer side of the circular ring sleeve around, for limiting and supporting the circular ring sleeve, and the outer wall of the bottom of the expansion pipe is fixedly connected with a triangular block.
[0018] As a further description of the above technical solution:
[0019] The circular ring sleeve is in a conical ring shape and a hollow shape in the middle, the plurality of groups of positioning grooves are all arranged in an arc shape, and the plurality of groups of triangular blocks are all arranged in a triangular shape and the bottom end thereof is an inclined surface inclined outward.
[0020] The utility model has the advantages of the following beneficial effects:
[0021] 1、in the utility model, through the clever cooperation of the positioning block, the clamping block, the reset spring, the clamping groove and the mounting groove, the positioning block is stably installed on the outer side of the expansion pipe, the expansion pipe is provided with support, inclination deviation during installation is avoided, the expansion pipe always maintains a vertical state, it can be uniformly expanded and unfolded when the expansion bolt drives the expansion pipe to expand outward, thereby effectively avoiding the problem of local stress concentration caused by the inclination of the expansion pipe, and the installation stability and anchoring effect are improved.
[0022] 2、in the utility model, through the combination of the expansion bolt body, the nut, the gasket and the expansion pipe, the circular ring sleeve moves upward under the extrusion of the conical surface at the bottom of the expansion bolt body, pushes the bottom of the expansion pipe to expand outward, at the same time, the triangular block expands outward and is clamped in the inner wall of the foundation, strong anchoring force is formed, the bottom outer side of the circular ring sleeve is clamped into the positioning groove, the expansion pipe is prevented from shrinking inward, the anchoring force is long-term stable, and the connection strength of the expansion pipe is improved. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a three-dimensional structure schematic view of the overall device in the utility model;
[0024] Figure 2 It is a three-dimensional structure section and split schematic view of the positioning block and the expansion pipe in the utility model;
[0025] Figure 3The utility model discloses a three-dimensional structure section view schematic diagram of expansion pipe.
[0026] Legend:
[0027] 1, expansion bolt body, 2, positioning assembly, 3, locking assembly, 4, expansion pipe, 5, washer, 6, nut, 7, trapezoidal block, 8, trapezoidal groove, 9, adjusting assembly, 21, positioning block, 22, press block, 23, sliding rod, 24, clamping block, 25, sliding groove, 26, round groove, 27, clamping groove, 28, installation groove, 29, reset spring, 31, round ring cover, 32, triangular block, 33, positioning groove, 91, threaded rod, 92, positioning disc, 93, storage groove. DETAILED DESCRIPTION
[0028] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the protection scope of the utility model.
[0029] Reference Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a kind of high-strength combined expansion bolt anchoring structure, including expansion bolt body 1, the expansion pipe 4 of setting in the outer wall of expansion bolt body 1, washer 5 and nut 6 of setting in the outer wall of expansion bolt body 1 located above washer 5 in expansion pipe 4, expansion pipe 4 and washer 5 between being provided with the positioning assembly 2 of supporting expansion pipe 4 and making it stable installation, positioning assembly 2 includes the clamping groove 27 of being opened in expansion pipe 4 near top left and right sides and the positioning block 21 of being respectively clamped in left and right clamping grooves 27, positioning block 21 is supported by the cooperation installation of clamping block 24, reset spring 29, clamping groove 27 and installation slot 28 in expansion pipe 4 outside, two sets of clamping groove 27 top inner wall are all provided with installation slot 28, two sets of positioning block 21 top near expansion pipe 4 outside are all provided with the sliding slot 25 of providing the moving space of clamping block 24, two sets of sliding slot 25 bottom are all provided with the circular groove 26 of providing the reset spring 29 placement space, two sets of sliding slot 25 inner wall are respectively slidably connected with two sets of clamping block 24 that inner top is respectively clamped in corresponding installation slot 28 inner wall, two sets of clamping block 24 top are all fixedly connected with the sliding rod 23 that is slidably connected in the top of positioning block 21, two sets of sliding slot 25 top inner wall are close to inner side and are all provided with the opening that is respectively penetrated top of positioning block 21, two sets of clamping block 24 inner side are all extended upwards and are respectively from the opening of corresponding sliding slot 25 top inner wall, the bottom of two sets of clamping block 24 is elastically connected with positioning block 21 by reset spring 29 cooperation, and two sets of reset spring 29 are all arranged in circular groove 26 inner wall and are respectively fixedly connected in corresponding two sets of positioning block 21 bottom.
[0030] Referring to Figure 1 , Figure 2 and Figure 3 , two sets of positioning block 21 bottom are all provided with adjusting assembly 9, for adjusting the angle of two sets of positioning block 21 and expansion pipe 4 to prevent expansion pipe 4 from deviating, adjusting assembly 9 includes two sets of receiving grooves 93 respectively opened in the middle of the bottom of positioning block 21 and two sets of positioning discs 92 respectively inserted in the inner wall of receiving groove 93, two sets of positioning discs 92 top are all fixedly connected with threaded rod 91, two sets of threaded rods 91 are respectively penetrated and rotationally connected in the top of two sets of positioning block 21, by rotating threaded rod 91 and the downward movement of positioning disc 92 is driven by the thread cooperation of positioning block 21 to support to the support of base body, while the vertical angle of expansion pipe 4 can be adjusted, so that it always keeps vertical state and improves installation accuracy.
[0031] Referring to Figure 1 , Figure 2 and Figure 3The inner sides of the two groups of positioning blocks 21 are arc-shaped surfaces that are adapted to the arc-shaped surfaces of the inner walls of the expansion pipe 4, which can prevent the inner sides of the two groups of positioning blocks 21 from contacting the expansion bolt body 1. The top ends of the two groups of sliding rods 23 are fixedly connected with pressing blocks 22 that extend outward beyond the outer sides of the sliding rods 23. The two groups of clamping blocks 24 are L-shaped. The inner sides of the two groups of mounting grooves 28 and the upward extensions of the inner sides of the clamping blocks 24 are arc-shaped, which can accommodate the circular shape of the expansion pipe 4 and improve stability.
[0032] Referring to Figure 1 , Figure 2 and Figure 3 , the top ends of the washers 5 and the nut 6 are fixedly connected with a plurality of groups of annularly arranged trapezoidal blocks 7. The bottom end of the nut 6 is provided with a plurality of groups of trapezoidal grooves 8 corresponding to the plurality of groups of trapezoidal blocks 7 at the top end of the washer 5. The plurality of groups of trapezoidal blocks 7 at the top end of the washer 5 are respectively clamped on the inner walls of the plurality of groups of trapezoidal grooves 8 at the bottom end of the nut 6. The plurality of groups of trapezoidal blocks 7 and the plurality of groups of trapezoidal grooves 8 are trapezoidal in shape. The plurality of groups of trapezoidal blocks 7 and the plurality of groups of trapezoidal grooves 8 can increase the friction and anti-slip effect between the nut 6 and the washer 5, the nut 6 and the surface of the anchoring object.
[0033] Referring to Figure 1 , Figure 2 and Figure 3 , the expansion pipe 4 and the expansion bolt body 1 are provided with a locking assembly 3 at the bottom. The locking assembly 3 includes a circular ring sleeve 31 that is sleeved on the outer wall of the bottom of the expansion bolt body 1. The inner wall of the bottom of the expansion pipe 4 is provided with a plurality of groups of positioning grooves 33 that are clamped on the outer side of the circular ring sleeve 31 to limit and support the circular ring sleeve 31. The outer wall of the bottom of the expansion pipe 4 is fixedly connected with a triangular block 32. The circular ring sleeve 31 is conical and hollow in the middle. The plurality of groups of positioning grooves 33 are arc-shaped. The plurality of groups of triangular blocks 32 are triangular and the bottom ends thereof are inclined outward. The circular ring sleeve 31 is pushed upward by the bottom conical surface of the expansion bolt body 1 after being squeezed, which pushes the bottom of the expansion pipe 4 to expand outward and drives the plurality of groups of triangular blocks 32 to expand outward and clamp on the inner wall of the foundation. The triangular triangular blocks 32 increase the resistance to upward movement of the barbs. After the bottom of the expansion pipe 4 expands outward, the bottom end of the circular ring sleeve 31 slides upward into the positioning groove 33 and is clamped, which prevents the expansion pipe 4 from shrinking inward and increases the stability after expansion.
[0034] Working principle: in use, by pressing the press block 22 downward, the reset spring 29 is extruded, the clamping block 24 slides in the sliding groove 25 and the inner top is flush with the upper surface of the positioning block 21, at this time the positioning block 21 is inserted into the clamping groove 27, the elastic force of the reset spring 29 drives the clamping block 24 to reset, the inner side of the clamping block 24 is clamped into the installation groove 28 to support the expansion pipe 4, the positioning block 21 is stably installed outside the expansion pipe 4, at this time the expansion bolt body 1 with the expansion pipe 4 is inserted into the hole in the foundation, which effectively avoids the inclination of the expansion pipe 4 in the hole, and lays a foundation for subsequent accurate installation.
[0035] If the angle deviation of the expansion pipe 4 is found, the threaded rod 91 can be rotated, since the threaded rod 91 is threadedly connected with the positioning block 21, the positioning disc 92 will move downward until it supports the base, in this process, the positioning disc 92 not only plays a supporting role, but also can fine-tune the vertical angle of the expansion pipe 4, so that the expansion pipe 4 always maintains a vertical state, improves the installation accuracy, and ensures that the expansion bolt can bear uniform force during expansion.
[0036] After the positioning and angle adjustment are completed, the washer 5 and the nut 6 are installed, and when the nut 6 is tightened, the trapezoidal blocks 7 on the washer 5 and the nut 6 are clamped with the trapezoidal grooves 8, which increases the friction between the nut 6 and the washer 5, the nut 6 and the surface of the anchoring object, effectively prevents the nut 6 from loosening during use, and enhances the anti-skid performance of the entire anchoring structure.
[0037] With the continuous tightening of the nut 6, the conical surface at the bottom of the expansion bolt body 1 extrudes the circular ring sleeve 31, which moves upward, the movement of the circular ring sleeve 31 pushes the bottom of the expansion pipe 4 to expand outward, at the same time, the triangular block 32 is expanded outward and clamped in the inner wall of the foundation, the bottom of the triangular block 32 is inclined outward, which increases the resistance to upward movement, when the bottom of the expansion pipe 4 is fully expanded and unfolded, the bottom of the circular ring sleeve 31 will slide upward to the positioning groove 33 and be clamped, which prevents the expansion pipe 4 from shrinking inward, thereby ensuring the long-term stability of the anchoring force and realizing reliable anchoring connection.
[0038] Finally, it should be pointed out that the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A high-strength combined expansion bolt anchoring structure, comprising an expansion bolt body (1), an expansion tube (4) disposed on the outer wall of the expansion bolt body (1), a washer (5) disposed on the outer wall of the expansion bolt body (1) above the expansion tube (4), and a nut (6) threaded onto the outer wall of the expansion bolt body (1) above the washer (5), characterized in that: A positioning component (2) is provided between the expansion tube (4) and the washer (5) to support the expansion tube (4) and make it stably installed; The positioning component (2) includes slots (27) on the left and right sides near the top of the expansion tube (4) and positioning blocks (21) respectively engaged in the slots (27) on the left and right sides. The inner walls of the top of each set of slots (27) are provided with mounting grooves (28). The outer sides of the tops of each set of positioning blocks (21) near the expansion tube (4) are provided with sliding grooves (25). The bottom ends of each set of sliding grooves (25) are provided with circular grooves (26). The inner walls of each set of sliding grooves (25) are slidably connected to two sets of locking blocks (24) whose inner tops are respectively engaged in the inner walls of the corresponding mounting grooves (28). (24) Each of the top ends is fixedly connected to a sliding rod (23) that passes through and slides on the top end of the positioning block (21). The inner walls of the top ends of the two sets of sliding grooves (25) are respectively opened to pass through the top end of the positioning block (21). The inner sides of the two sets of locking blocks (24) extend upward and pass through the openings on the inner walls of the top ends of the corresponding sliding grooves (25). The bottom ends of the two sets of locking blocks (24) are elastically connected to the positioning block (21) through a return spring (29). The two sets of return springs (29) are respectively fixedly connected to the bottom of the corresponding two sets of positioning blocks (21) on the inner wall of the circular groove (26).
2. The high-strength combined expansion bolt anchoring structure according to claim 1, characterized in that: Both sets of positioning blocks (21) are provided with adjustment components (9) at their bottom ends, which are used to adjust the angle of the two sets of positioning blocks (21) and the expansion tube (4) to prevent the expansion tube (4) from shifting.
3. The high-strength combined expansion bolt anchoring structure according to claim 2, characterized in that: The adjustment component (9) includes two sets of storage slots (93) respectively opened in the middle of the bottom end of the positioning block (21) and two sets of positioning discs (92) respectively inserted into the inner wall of the storage slots (93). The top of each of the two sets of positioning discs (92) is fixedly connected with a threaded rod (91), and the two sets of threaded rods (91) are respectively passed through and rotatably connected to the top of the two sets of positioning blocks (21).
4. The high-strength combined expansion bolt anchoring structure according to claim 1, characterized in that: The inner sides of both sets of positioning blocks (21) are arc-shaped and adapted to the arc-shaped inner wall of the expansion tube (4). The top ends of both sets of slide rods (23) are fixedly connected to pressing blocks (22) that extend outward from the outside of the slide rods (23).
5. The high-strength combined expansion bolt anchoring structure according to claim 1, characterized in that: Both sets of the card blocks (24) are L-shaped, and the inner upward extension of both sets of the mounting grooves (28) and card blocks (24) is arc-shaped.
6. The high-strength combined expansion bolt anchoring structure according to claim 1, characterized in that: The top of both the washer (5) and the nut (6) is fixedly connected to multiple sets of trapezoidal blocks (7) arranged in a ring array. The bottom of the nut (6) is provided with multiple sets of trapezoidal grooves (8) corresponding to the multiple sets of trapezoidal blocks (7) at the top of the washer (5). The multiple sets of trapezoidal blocks (7) at the top of the washer (5) are respectively engaged with the inner wall of the multiple sets of trapezoidal grooves (8) at the bottom of the nut (6). The multiple sets of trapezoidal blocks (7) and the multiple sets of trapezoidal grooves (8) are all trapezoidal in shape.
7. The high-strength combined expansion bolt anchoring structure according to claim 1, characterized in that: The expansion tube (4) and the expansion bolt body (1) are provided with a locking assembly (3) at the bottom. The locking assembly (3) includes a ring sleeve (31) that is sleeved on the outer wall of the bottom of the expansion bolt body (1). The inner wall of the bottom of the expansion tube (4) is provided with positioning grooves (33) that engage with the outer side of the ring sleeve (31) to limit and support the ring sleeve (31). Triangular blocks (32) are fixedly connected to the outer wall of the bottom of the expansion tube (4).
8. A high-strength combined expansion bolt anchoring structure according to claim 7, characterized in that: The ring sleeve (31) is a conical ring with a hollow center. The multiple sets of positioning grooves (33) are all arc-shaped, and the multiple sets of triangular blocks (32) are all triangular with their bottom ends inclined outwards.