Dihedral die capable of preventing tensioning end from cracking
By designing a reverse angle mold for prefabricated beams, the L-shaped connector and protective pads are used to squeeze and clamp the ends of prefabricated beams by using gears and adjustment mechanisms, the concrete cracking problem caused by the concentration of end stress during prefabricated beam tensioning is solved, and the effect of effectively preventing cracking is achieved.
Patent Information
- Application Number
- CN202323481844.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2033-12-20
AI Technical Summary
During the tensioning process of prefabricated beams, the concentration of end stress causes concrete cracking, and the prior art is difficult to effectively prevent this problem.
An inverted mold is designed, including a mold body, an L-shaped connector, a side clamp and an adjustment mechanism. By starting the gear, the side clamps are opened and the prefabricated beam is placed, and then the gear is started in reverse, so that the L-shaped connectors and protective pads are squeezed inward, completing the clamping work to prevent concrete from cracking.
Through the use of this mold, cracking of the ends of prefabricated beams can be effectively prevented, and the integrity of concrete and structural stability can be ensured.
Smart Images
Figure CN223044780U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of reverse angle molds, and particularly relates to a reverse angle mold for preventing the cracking of tensioning ends. Background Art
[0002] In the engineering field, precast beams are formed by formwork support, mixing, and pouring at a concrete component factory or on-site construction site.
[0003] During the tensioning process of precast beams, the mid-span gradually arches, resulting in stress concentration at both ends of the precast beam. As the tensioning process continues, both ends of the precast beam gradually longitudinally displace towards the mid-span, and the frictional force at the bottom of the ends continuously increases, leading to concrete cracking.
[0004] Therefore, we propose a reverse angle mold for preventing the cracking of tensioning ends to solve the above problems. Content of the Utility Model
[0005] In view of the problems in the prior art, the utility model proposes the following technical solutions:
[0006] A reverse angle mold for preventing the cracking of tensioning ends, including a mold body. A cavity is opened in the middle of the bottom end of the mold body, and an L-shaped connecting piece is installed inside the cavity through an adjusting mechanism. The top ends inside the L-shaped connecting pieces are fixedly installed in the middle of the outer walls of the side clamping plates;
[0007] The adjusting mechanism includes a first rack plate and a second rack plate fixedly installed at the bottom end of the L-shaped connecting piece. The inner side walls of the first rack plate and the second rack plate are both meshed with the outer wall of a gear. The middle of the gear is connected to the inside of the cavity opened at the lower end of the middle of the mold body through a rotating rod, and the top end of the rear side of the rotating rod penetrates through the outer wall of the mold body.
[0008] Start the gear. Under the meshing action of the gear with the first rack plate and the second rack plate, drive the two groups of side clamping plates to open outward. Place the precast beam after pouring in the inner side of the mold body. At this time, reverse-start the gear to drive the two groups of L-shaped connecting pieces and the protective pads to squeeze the ends of the precast beam inward until the clamping work on the ends is completed, so that the concrete does not crack.
[0009] As a preference of the above technical solution, sliding blocks are fixedly installed on the inner and outer walls of the first rack plate and the second rack plate, and the outer sides of the sliding blocks are both slidably connected to the inside of the slide rails. The slide rails are symmetrically opened at the upper and lower ends of the inner wall of the cavity.
[0010] Under the sliding action of the sliding blocks and the slide rails, the stability of the first rack plate and the second rack plate moving inside the cavity is guaranteed.
[0011] Preferably, as the above technical solution, the outer side walls of the first rack plate and the second rack plate are both in rolling contact with the inner outer walls of the balls, and the outer sides of the balls are both in rolling engagement with the inner wall of the cavity.
[0012] Under the rolling action of the balls, the smoothness of the movement adjustment of the first rack plate and the second rack plate inside the cavity is ensured.
[0013] Preferably, as the above technical solution, an anti-collision pad is adhesively bonded to the middle of the inner side wall of the L-shaped connecting piece, and soft pads are adhesively bonded to both sides of the inner wall of the mold body.
[0014] Under the protection of the soft pads and the anti-collision pad, the inner and outer walls of the mold body, the outer side wall of the side clamping plate and the inner side wall of the L-shaped connecting piece are protected to avoid damage caused by impact.
[0015] Preferably, as the above technical solution, a plurality of groups of protective pads are adhesively bonded to the inner side wall of the side clamping plate at equal intervals.
[0016] Under the action of the protective pads, the end of the precast beam after pouring is effectively protected.
[0017] The beneficial effects of the present utility model are as follows:
[0018] Start the gear, so that under the meshing action of the gear with the first rack plate and the second rack plate, the two groups of side clamping plates are driven to open outwards, and the precast beam after pouring is placed inside the mold body. At this time, reverse the gear to drive the two groups of L-shaped connecting pieces and the protective pads to squeeze inwards against the end of the precast beam until the clamping work on the end is completed, so that the concrete does not crack. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The front view sectional structure diagram provided by the embodiment of the present utility model is shown;
[0020] Figure 2 The embodiment of the present utility model provided is shown Figure 1 The enlarged structure diagram at A in the figure.
[0021] Legend description:
[0022] 1. Mold body; 2. L-shaped connecting piece; 3. Side clamping plate; 4. Protective pad; 5. Soft pad; 6. Anti-collision pad; 7. First rack plate; 8. Cavity; 9. Ball; 10. Gear; 11. Second rack plate; 12. Slide block; 13. Slide rail. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments.
[0024] As Figure 1 and Figure 2 shown, in the embodiment of the utility model: it includes a mold body 1, a cavity 8 is opened in the middle of the bottom end of the mold body 1, and an L-shaped connecting piece 2 is installed inside the cavity 8 through an adjusting mechanism, and the top ends inside the L-shaped connecting piece 2 are fixedly installed in the middle of the outer wall of the side clamping plate 3;
[0025] The adjusting mechanism includes a first rack plate 7 and a second rack plate 11 fixedly installed at the bottom end of the L-shaped connecting piece 2. The inner walls of the first rack plate 7 and the second rack plate 11 are both meshed with the outer wall of the gear 10. The middle of the gear 10 is connected to the inside of the cavity 8 opened at the lower end of the middle of the mold body 1 through a rotating rod, and the top end of the rear side of the rotating rod penetrates through the outer wall of the mold body 1.
[0026] Start the gear 10, so that under the meshing action of the gear 10 with the first rack plate 7 and the second rack plate 11, drive the two groups of side clamping plates 3 to open outwards, place the precast beam after pouring in the mold body 1, and then reverse-start the gear 10, so that drive the two groups of L-shaped connecting pieces 2 and the protective pads 4 to squeeze the end of the precast beam inwards until the clamping work on the end is completed, so that the concrete does not crack.
[0027] As Figure 2 shown, sliders 12 are fixedly installed on the outer walls of the inner sides of the first rack plate 7 and the second rack plate 11, and the outer sides of the sliders 12 are both slidably connected to the inside of the slide rails 13. The slide rails 13 are symmetrically opened at the upper and lower ends of the inner wall of the cavity 8.
[0028] Under the sliding action of the sliders 12 and the slide rails 13, the stability of the movement of the first rack plate 7 and the second rack plate 11 inside the cavity 8 is guaranteed.
[0029] As Figure 1 shown, the outer walls of the first rack plate 7 and the second rack plate 11 are both in rolling abutment with the inner outer walls of the balls 9, and the outer sides of the balls 9 are both rollingly embedded in the inner wall of the cavity 8.
[0030] Under the rolling action of the balls 9, the smoothness of the movement adjustment of the first rack plate 7 and the second rack plate 11 inside the cavity 8 is guaranteed.
[0031] As Figure 1 shown, an anti-collision pad 6 is adhesively bonded to the middle of the inner wall of the L-shaped connecting piece 2, and soft pads 5 are adhesively bonded to both sides of the inner wall of the mold body 1.
[0032] Under the protection of the soft pads 5 and the anti-collision pads 6, the inner and outer walls of the mold body 1, the outer wall of the side clamping plate 3 and the inner wall of the L-shaped connecting piece 2 are protected to avoid damage caused by impact.
[0033] As Figure 1As shown, a plurality of groups of protective pads 4 are adhesively fixed to the inner side wall of the side splint 3 at equal distances.
[0034] Under the action of the protective pads 4, the end of the precast beam after pouring is effectively protected.
[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.
Claims
1. An anti-angle die for preventing the cracking of the tensioning end, comprising a die body (1), characterized in that: A cavity (8) is formed in the middle of the bottom end of the mold body (1), and an L-shaped connecting piece (2) is installed inside the cavity (8) through an adjusting mechanism. The inner tops of the L-shaped connecting pieces (2) are fixedly installed in the middle of the outer wall of the side clamping plate (3). The adjusting mechanism includes a first rack plate (7) and a second rack plate (11) fixedly installed at the bottom end of the L-shaped connecting piece (2). The inner walls of the first rack plate (7) and the second rack plate (11) are both meshed with the outer wall of a gear (10). The middle of the gear (10) is connected to the inside of the cavity (8) formed at the lower end of the middle of the mold body (1) through a rotating rod, and the top end of the rear side of the rotating rod penetrates through the outer wall of the mold body (1).
2. The reverse angle die for preventing the tensioning end from cracking according to claim 1, wherein Sliders (12) are fixedly installed on the outer walls of the inner sides of the first rack plate (7) and the second rack plate (11), and the outer sides of the sliders (12) are slidably connected to the inside of slide rails (13). The slide rails (13) are symmetrically formed at the upper and lower ends of the inner wall of the cavity (8).
3. The reverse angle die for preventing the tensioning end from cracking according to claim 1, characterized in that, The outer walls of the first rack plate (7) and the second rack plate (11) are both in rolling contact with the inner outer walls of balls (9), and the outer sides of the balls (9) are all rollingly embedded in the inner wall of the cavity (8).
4. The anti-corner die for preventing the cracking of the tension end according to claim 1, characterized in that, An anti-collision pad (6) is adhesively bonded to the middle of the inner wall of the L-shaped connecting piece (2), and soft pads (5) are adhesively bonded to both sides of the inner wall of the mold body (1).
5. The reverse angle die for preventing the cracking of the tension end according to claim 1, characterized in that, A plurality of groups of protective pads (4) are adhesively bonded to the inner wall of the side clamping plate (3) at equal intervals.