Unbonded prestressed steel bar and anchorage device

Abstract

The utility model relates to the technical field of anchorage devices, in particular to an unbonded prestressed steel bar and an anchorage device, the unbonded prestressed steel bar comprises a supporting seat, a supporting shell, a supporting ring, a fixing plate, a steel bar body, a mounting mechanism and a traction mechanism, a supporting groove is formed in the supporting seat, the supporting shell is fixedly arranged at the groove bottom of the supporting groove, and the supporting ring is arranged on the supporting seat. The supporting ring is slidably arranged in the supporting groove, the inner wall of the supporting ring is slidably connected with the side wall of the supporting shell, the fixing plate is arranged on one side of the supporting base, a plurality of steel bar bodies are arranged between the fixing plate and the supporting ring, and the mounting mechanism is arranged among the steel bar bodies, the fixing plate and the supporting ring. The steel bar body is arranged in the supporting shell and used for installing and fixing the steel bar body with the fixing plate and the supporting ring, the traction mechanism is arranged in the supporting shell and used for controlling the supporting ring to move, and by means of the technical scheme, the problem that in the related technology, prestress loss is likely to be caused in the arrangement process of the multiple steel bars is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor devices, in particular to a non-bonded prestressed steel bar and an anchor device. Background Art

[0002] An anchor device refers to a permanent anchoring device used in prestressed concrete, which is an anchoring tool for maintaining the tension of prestressed steel bars and transmitting it to the interior of concrete in a post-tensioned structure or component, and is also called a prestressed anchor device.

[0003] In order to maintain the tension of the steel bar, in the existing technology, for the installation of the steel bar anchor device in some building structures, construction workers often use bolts and nuts for installation and fixation. Since this method does not require other auxiliary equipment, it is widely used in some small-scale engineering projects. However, relying solely on the mating threads of bolts and nuts to bear the tension, its firmness is unreliable, which is likely to cause prestress loss. Especially when multiple steel bars are arranged, construction workers generally rotate the nuts one by one to stretch the steel bars. Construction workers operate based on their experience and feeling, and cannot ensure that the tension received by each steel bar is basically the same, which is likely to cause prestress loss and fail to achieve the corresponding effect. Summary of the Utility Model

[0004] The utility model provides a non-bonded prestressed steel bar and an anchor device, which solves the problem of easy prestress loss in the process of arranging multiple steel bars in the related technology.

[0005] The technical solution of the utility model is as follows: a non-bonded prestressed anchor device, comprising a support base, a support shell, a support ring, a fixing plate, a steel bar body, an installation mechanism and a traction mechanism;

[0006] A support groove is formed on the support base;

[0007] The support shell is fixedly arranged at the bottom of the support groove;

[0008] The support ring is slidably arranged in the support groove, and the inner wall of the support ring is slidably connected with the side wall of the support shell;

[0009] The fixing plate is arranged on one side of the support base;

[0010] A plurality of the steel bar bodies are arranged between the fixing plate and the support ring;

[0011] The installation mechanism is arranged between the steel bar body, the fixing plate and the support ring, and is used for installing and fixing the steel bar body between the fixing plate and the support ring respectively;

[0012] The traction mechanism is arranged in the support shell and is used for controlling the movement of the support ring.

[0013] Preferably, the installation mechanism includes:

[0014] A first installation opening, and a plurality of the first installation openings are formed in the fixing plate;

[0015] A second installation opening, and a plurality of the second installation openings are formed in the support ring, and the second installation openings penetrate through the support seat;

[0016] An annular groove, and the annular grooves are respectively formed at both ends of the side wall of the steel bar body, and an external thread is provided on the side wall of the annular groove;

[0017] A first nut, and the first nut is sleeved on the steel bar body through threaded fit.

[0018] Further, the traction mechanism includes:

[0019] A traction opening, and a plurality of the traction openings are formed in the side wall of the support housing;

[0020] A traction disc, and the traction disc is slidably arranged in the support housing;

[0021] A traction block, and the traction block is slidably arranged in the traction opening, and both ends of the traction block are respectively fixedly connected with the traction disc and the support ring;

[0022] A moving mechanism, and the moving mechanism is arranged on the support housing and is used for controlling the movement of the traction disc.

[0023] Still further, the moving mechanism includes:

[0024] A moving opening, and the moving opening is formed in the inner top wall of the support housing;

[0025] A threaded column, and the threaded column is fixedly arranged on the traction disc, and the threaded column penetrates through the moving opening and extends out of the support housing;

[0026] A second nut, and the second nut is sleeved on the threaded column through threaded fit.

[0027] Even further, a positioning mechanism is further included, and the positioning mechanism is arranged on the traction disc and is used for positioning the position of the traction disc. The positioning mechanism includes:

[0028] A first positioning groove, and a plurality of the first positioning grooves are formed in the side wall of the traction disc;

[0029] A second positioning groove, and a plurality of the second positioning grooves are formed in the inner wall of the support housing;

[0030] The first gear, the first gear is rotatably arranged in the first positioning groove, and a positioning block is fixedly arranged on the side wall of the first gear;

[0031] The driving mechanism, the driving mechanism is arranged in the traction disc and is used to control the synchronous rotation of a plurality of the first gears.

[0032] On the basis of the above solution, the driving mechanism includes:

[0033] The first cavity, the first cavity is opened in the traction disc, and the first cavity is communicated with the first positioning groove;

[0034] The second gear, the second gear is rotatably arranged in the first cavity, and the second gear is meshed with the first gear;

[0035] The driving port, the driving port is opened on the inner top wall of the first cavity, and the driving port penetrates through the threaded column;

[0036] The driving rod, the driving rod is fixedly arranged on the second gear, and the driving rod penetrates through the driving port and extends out of the threaded column;

[0037] The handwheel, the handwheel is arranged on the driving rod;

[0038] The limiting mechanism, the limiting mechanism is arranged between the handwheel and the driving rod and is used to limit the rotation angle of the handwheel.

[0039] On the basis of the above solution, the limiting mechanism includes:

[0040] The limiting groove, the limiting groove is opened on the threaded column;

[0041] The limiting block, the limiting block is fixedly arranged on the handwheel;

[0042] The supporting mechanism, the supporting mechanism is arranged in the handwheel and is used to support the handwheel.

[0043] On the basis of the above solution, the supporting mechanism includes:

[0044] The second cavity, the second cavity is opened in the handwheel, and a support plate is slidably arranged in the second cavity;

[0045] The limiting port, the limiting port is opened on the inner bottom wall of the second cavity, and the driving rod penetrates through the limiting port and is fixedly connected with the support plate.

[0046] On the basis of the above solution, a support spring is further included, the support spring is sleeved on the driving rod, and two ends of the support spring are respectively fixedly connected with the support plate and the inner bottom wall of the second cavity.

[0047] In addition, it should be noted that the unbonded prestressed steel bars are applied to the unbonded prestressed anchor devices described in any one of the above solutions.

[0048] The working principle and beneficial effects of the present utility model are as follows:

[0049] 1. In the present utility model, through the setting of the installation mechanism, it is convenient to realize the installation and fixation between the steel bar body and the fixing plate and the support ring respectively by rotating the first nut after the steel bar body penetrates through the fixing plate and the support ring.

[0050] 2. In the present utility model, through the setting of the traction mechanism, by rotating the second nut, the cooperation between the second nut and the threaded column can drive the threaded column and the traction plate to move, so that the support ring can be driven to move through the traction block, and thus the multiple steel bar bodies can be stretched and pulled together and the same traction force can be ensured, thereby avoiding the loss of prestress.

[0051] 3. In the present utility model, through the setting of the positioning mechanism, after the traction of the steel bar body is completed, the second gear can be driven to rotate by rotating the handwheel, and at the same time, the positioning block can be driven to extend into the second positioning groove through the meshing of the second gear and the first gear, so that the positioning of the traction plate and the support ring can be realized through the cooperation between the positioning block and the side wall of the second positioning groove, thereby avoiding the position deviation of the traction plate and the support ring.

[0052] 4. In the present utility model, through the setting of the limiting mechanism, after the handwheel is released, the limiting block can be made to extend into the limiting groove under the action of the supporting spring, so that the limiting of the handwheel can be realized through the cooperation between the limiting block and the limiting groove, thereby avoiding the loosening of the positioning block from the second positioning groove.

[0053] 5. In the present utility model, through the setting of the support base, the support shell, the support ring, the fixing plate, the steel bar body, the installation mechanism and the traction mechanism, it is convenient to control the movement of the support ring through the work of the traction mechanism, and then drive the stretching and pulling of the multiple steel bar bodies through the movement of the support ring, and at the same time, the same traction force can be ensured, solving the problem of easy prestress loss in the process of arranging multiple steel bars in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0055] Figure 1 is a schematic structural diagram of the present utility model;

[0056] Figure 2 is a schematic structural diagram of another perspective of the present utility model;

[0057] Figure 3 Schematic cross-sectional structure view of the support base of the present utility model;

[0058] Figure 4 Schematic cross-sectional structure view of the traction disc of the present utility model;

[0059] Figure 5 For the present utility model Figure 4 Partial enlarged structure view of position A in the present utility model.

[0060] In the figure: 1, support base; 2, support groove; 3, support housing; 4, support ring; 5, fixing plate; 6, steel bar body; 7, second installation opening; 8, first nut; 9, traction disc; 10, traction block; 11, threaded column; 12, second nut; 13, first positioning groove; 14, second positioning groove; 15, first gear; 16, second gear; 17, drive rod; 18, handwheel; 19, limit groove; 20, limit block; 21, support plate; 22, support spring. Specific embodiments

[0061] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0062] As Figures 1 - 5 shown, this embodiment proposes an unbonded prestressed anchor, including a support base 1, a support housing 3, a support ring 4, a fixing plate 5, a steel bar body 6, an installation mechanism, and a traction mechanism. A support groove 2 is provided on the support base 1, the support housing 3 is fixedly arranged at the bottom of the support groove 2, the support ring 4 is slidably arranged in the support groove 2, the inner wall of the support ring 4 is slidably connected to the side wall of the support housing 3, the fixing plate 5 is arranged on one side of the support base 1, and a plurality of steel bar bodies 6 are arranged between the fixing plate 5 and the support ring 4. The installation mechanism is arranged between the steel bar body 6, the fixing plate 5, and the support ring 4 for installing and fixing the steel bar body 6 between the fixing plate 5 and the support ring 4 respectively. The traction mechanism is arranged in the support housing 3 for controlling the movement of the support ring 4.

[0063] Referring to Figure 1 And Figure 2 , the installation mechanism includes a first installation opening, a second installation opening 7, an annular groove, and a first nut 8. A plurality of first installation openings are provided on the fixing plate 5, a plurality of second installation openings 7 are provided on the support ring 4, the second installation opening 7 penetrates the support base 1, annular grooves are respectively provided at both ends of the side wall of the steel bar body 6, external threads are provided on the side wall of the annular groove, and the first nut 8 is sleeved on the steel bar body 6 through threaded cooperation.

[0064] Specifically, the operator passes the steel bar body 6 through the fixing plate 5 and the support ring 4, and then realizes the installation and fixation between the steel bar body 6 and the fixing plate 5 and the support ring 4 respectively by rotating the first nut 8.

[0065] Refer to Figure 3 , the traction mechanism includes a traction port, a traction disc 9, a traction block 10 and a moving mechanism. A plurality of traction ports are provided on the side wall of the support housing 3. The traction disc 9 is slidably arranged in the support housing 3. The traction block 10 is slidably arranged in the traction port. Both ends of the traction block 10 are fixedly connected to the traction disc 9 and the support ring 4 respectively. The moving mechanism is arranged on the support housing 3 and is used to control the movement of the traction disc 9. The moving mechanism includes a moving port, a threaded column 11 and a second nut 12. The moving port is opened on the inner top wall of the support housing 3. The threaded column 11 is fixedly arranged on the traction disc 9. The threaded column 11 passes through the moving port and extends out of the support housing 3. The second nut 12 is sleeved on the threaded column 11 through thread fit.

[0066] Specifically, by rotating the second nut 12, the cooperation between the second nut 12 and the threaded column 11 can drive the threaded column 11 and the traction disc 9 to move, so that the support ring 4 can be driven to move through the traction block 10, and then a plurality of steel bar bodies 6 can be stretched and towed together and the same traction force can be ensured, thus avoiding the loss of prestress.

[0067] Refer to Figure 3 And Figure 4 , it further includes a positioning mechanism. The positioning mechanism is arranged on the traction disc 9 and is used to position the position of the traction disc 9. The positioning mechanism includes a first positioning groove 13, a second positioning groove 14, a first gear 15 and a driving mechanism. A plurality of first positioning grooves 13 are opened on the side wall of the traction disc 9. A plurality of second positioning grooves 14 are opened on the inner wall of the support housing 3. The first gear 15 is rotatably arranged in the first positioning groove 13. A positioning block is fixedly arranged on the side wall of the first gear 15. The driving mechanism is arranged in the traction disc 9 and is used to control the synchronous rotation of a plurality of first gears 15. The driving mechanism includes a first cavity, a second gear 16, a driving port, a driving rod 17, a handwheel 18 and a limiting mechanism. The first cavity is opened in the traction disc 9. The first cavity is communicated with the first positioning groove 13. The second gear 16 is rotatably arranged in the first cavity. The second gear 16 is meshed with the first gear 15. The driving port is opened on the inner top wall of the first cavity. The driving port penetrates through the threaded column 11. The driving rod 17 is fixedly arranged on the second gear 16. The driving rod 17 passes through the driving port and extends out of the threaded column 11. The handwheel 18 is arranged on the driving rod 17. The limiting mechanism is arranged between the handwheel 18 and the driving rod 17 and is used to limit the rotation angle of the handwheel 18.

[0068] Specifically, after the steel bar body 6 is completely pulled, the rotation of the handwheel 18 can drive the second gear 16 to rotate. At the same time, the engagement between the second gear 16 and the first gear 15 drives the positioning block to extend into the second positioning groove 14, so that the positioning of the traction disc 9 and the support ring 4 can be realized through the cooperation between the positioning block and the side wall of the second positioning groove 14, thereby avoiding the position deviation of the traction disc 9 and the support ring 4.

[0069] Referring to Figure 4 With Figure 5 , the limiting mechanism includes a limiting groove 19, a limiting block 20 and a supporting mechanism. The limiting groove 19 is opened on the threaded rod 11, the limiting block 20 is fixedly arranged on the handwheel 18, and the supporting mechanism is arranged in the handwheel 18 for supporting the handwheel 18. The supporting mechanism includes a second cavity and a limiting port. The second cavity is opened in the handwheel 18. A support plate 21 is slidably arranged in the second cavity. The limiting port is opened on the inner bottom wall of the second cavity. The driving rod 17 passes through the limiting port and is fixedly connected with the support plate 21. A support spring 22 is further included. The support spring 22 is sleeved on the driving rod 17, and both ends of the support spring 22 are fixedly connected with the support plate 21 and the inner bottom wall of the second cavity respectively.

[0070] Specifically, after the handwheel 18 is released, the limiting block 20 can be made to extend into the limiting groove 19 under the action of the support spring 22, so that the limiting of the handwheel 18 is realized through the cooperation between the limiting block 20 and the limiting groove 19, thereby avoiding the loosening of the positioning block from the second positioning groove 14.

[0071] In addition, it should be noted that the unbonded prestressed steel bar is applied to the unbonded prestressed anchor of any one of the above solutions.

[0072] In this embodiment, during use, the operator passes the steel bar body 6 through the fixing plate 5 and the support ring 4, and then rotates the first nut 8 to install and fix the steel bar body 6 between the fixing plate 5 and the support ring 4 respectively. Then, the operator controls the rotation of the second nut 12. By rotating the second nut 12, the cooperation between the second nut 12 and the threaded column 11 can drive the threaded column 11 and the traction disc 9 to move, so that the support ring 4 can be driven to move through the traction block 10, thereby stretching and pulling multiple steel bar bodies 6 together and ensuring the same traction force, thus avoiding the loss of prestress. After the steel bar body 6 is pulled, the operator pulls the handwheel 18, so that the limiting block 20 can be disengaged from the limiting groove 19. Then, by rotating the handwheel 18, the second gear 16 can be driven to rotate. At the same time, through the meshing of the second gear 16 and the first gear 15, the positioning block is driven to extend into the second positioning groove 14, so that the positioning of the traction disc 9 and the support ring 4 can be realized through the cooperation between the positioning block and the side wall of the second positioning groove 14, thus avoiding the position deviation of the traction disc 9 and the support ring 4. Then, when the operator releases the handwheel 18, the limiting block 20 can be made to extend into the limiting groove 19 under the action of the support spring 22, so that the handwheel 18 is limited through the cooperation between the limiting block 20 and the limiting groove 19, thus avoiding the loosening of the positioning block from the second positioning groove 14.

[0073] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Unbonded prestressed anchor, characterized in that: include: A support seat (1), wherein the support seat (1) is provided with a support groove (2); A support shell (3), the support shell (3) being fixedly arranged at the bottom of the support groove (2); A support ring (4), the support ring (4) being slidably disposed in the support groove (2), the inner wall of the support ring (4) being slidably connected to the side wall of the support shell (3); A fixing plate (5), the fixing plate (5) being arranged on one side of the supporting seat (1); A steel rod body (6), a plurality of the steel rod bodies (6) being arranged between the fixing plate (5) and the support ring (4); An installation mechanism, the installation mechanism being arranged between the steel rod body (6) and the fixing plate (5) and the support ring (4), and being used for installing and fixing the steel rod body (6) and the fixing plate (5) and the support ring (4) respectively; A traction mechanism, the traction mechanism is arranged in the support shell (3) and is used to control the movement of the support ring (4).

2. The unbonded prestressed anchor according to claim 1, characterized in that: The mounting mechanism comprises: A first mounting opening, a plurality of first mounting openings being formed on the fixing plate (5); A second mounting opening (7), wherein a plurality of the second mounting openings (7) are formed on the support ring (4), and the second mounting openings (7) penetrate the support seat (1); annular grooves, the annular grooves being respectively formed at both ends of the side wall of the steel rod body (6), and the side walls of the annular grooves being provided with external threads; A first nut (8), wherein the first nut (8) is sleeved on the steel rod body (6) through threaded engagement.

3. The unbonded prestressed anchor according to claim 2, characterized in that: The traction mechanism comprises: A traction opening, a plurality of traction openings are provided on the side wall of the support shell (3); A traction plate (9), the traction plate (9) being slidably disposed in the support shell (3); A traction block (10), the traction block (10) being slidably disposed in the traction opening, and two ends of the traction block (10) being fixedly connected to the traction disc (9) and the support ring (4) respectively; A moving mechanism, the moving mechanism is arranged on the supporting shell (3) and is used to control the movement of the traction plate (9).

4. The unbonded prestressed anchor according to claim 3, characterized in that: The moving mechanism comprises: A movable opening, the movable opening being formed on the inner top wall of the supporting shell (3); A threaded column (11), the threaded column (11) being fixedly disposed on the traction plate (9), the threaded column (11) passing through the moving opening and extending out of the support shell (3); A second nut (12), the second nut (12) being sleeved on the threaded column (11) by threaded engagement.

5. The unbonded prestressed anchor according to claim 4, characterized in that: It also includes a positioning mechanism, which is arranged on the traction disc (9) and is used to locate the position of the traction disc (9), and the positioning mechanism includes: A first positioning groove (13), wherein a plurality of the first positioning grooves (13) are provided on the side wall of the traction plate (9); Second positioning grooves (14), a plurality of second positioning grooves (14) being provided on the inner wall of the support shell (3); a first gear (15), the first gear (15) being rotatably disposed in the first positioning groove (13), and a positioning block being fixedly disposed on a side wall of the first gear (15); A driving mechanism, the driving mechanism being arranged in the traction plate (9) and being used for controlling the plurality of the first gears (15) to rotate synchronously.

6. The unbonded prestressed anchor according to claim 5, characterized in that: The driving mechanism comprises: A first cavity, the first cavity being disposed in the traction plate (9), the first cavity being in communication with the first positioning groove (13); a second gear (16), the second gear (16) being rotatably disposed in the first cavity, the second gear (16) being meshed with the first gear (15); A drive port, the drive port being formed on the inner top wall of the first cavity and passing through the threaded column (11); A driving rod (17), the driving rod (17) being fixedly disposed on the second gear (16), the driving rod (17) passing through the driving opening and extending out of the threaded column (11); A hand wheel (18), wherein the hand wheel (18) is arranged on the driving rod (17); A limiting mechanism, the limiting mechanism is arranged between the hand wheel (18) and the driving rod (17), and is used to limit the rotation angle of the hand wheel (18).

7. The unbonded prestressed anchor according to claim 6, characterized in that: The limiting mechanism comprises: A limiting groove (19), wherein the limiting groove (19) is formed on the threaded column (11); a limit block (20), the limit block (20) being fixedly disposed on the hand wheel (18); A supporting mechanism, wherein the supporting mechanism is arranged in the hand wheel (18) and is used to support the hand wheel (18).

8. The unbonded prestressed anchor according to claim 7, characterized in that: The supporting mechanism comprises: a second cavity, the second cavity being disposed in the hand wheel (18), and a support plate (21) being slidably disposed in the second cavity; A limiting opening, the limiting opening being formed on the inner bottom wall of the second cavity, the driving rod (17) passing through the limiting opening and being fixedly connected to the supporting plate (21).

9. The unbonded prestressed anchor according to claim 8, characterized in that: It also includes a support spring (22), the support spring (22) being sleeved on the drive rod (17), and the two ends of the support spring (22) being fixedly connected to the support plate (21) and the inner bottom wall of the second cavity respectively.

10. Unbonded prestressed steel rod, characterized in that: The unbonded prestressed steel rod is applied to the unbonded prestressed anchor described in claim 9.

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