Limiting tool for construction of B wall of high-speed rail

Abstract

The utility model relates to a high-speed rail B wall construction limiting tool which comprises a cross rod and a limiting plate arranged at the lower end of the cross rod, and the two ends of the cross rod are each provided with a telescopic device. The limiting plate comprises two L-shaped limiting blocks which are symmetrically arranged, and the distance between the limiting blocks is equal to the width of the wall template B; the telescopic device comprises a lead screw and a conical foot pad fixedly arranged at the outer end of the lead screw, and the lead screw is in threaded connection with the end of the transverse rod. Compared with an original limiting tool, the novel high-speed rail B wall construction limiting tool has the advantages that a B wall formwork is clamped through the limiting plates, and the formwork is fixed; in addition, the precision of an upper opening of the formwork can be adjusted through the telescopic device, the effect of preventing the formwork from floating upwards is achieved while the perpendicularity of the wall body is guaranteed, and the construction efficiency is synchronously improved; the whole limiting tool is simple in structure, low in manufacturing and maintenance cost and better in reliability.

Description

Technical Field

[0001] The utility model relates to the field of construction, in particular to a construction limiting tool for high-speed rail B wall. Background Art

[0002] In the construction project of railway bridge deck, the "three walls" are important components. The "three walls" respectively refer to the A wall, the B wall and the parapet wall, which are mainly used to prevent damage to the main structure of the bridge caused by external factors such as accidental impact and wind load, and also play the role of railway guard rails; the B wall formwork is an auxiliary part in the high-speed rail three-wall formwork system, which is mainly used to connect the A wall formwork and the parapet wall formwork to enhance the integrity and stability of the entire formwork system; in the traditional construction of the B wall, in order to ensure the verticality of the wall body, steel pipe struts are usually set on both sides of the wall body for reinforcement, and the construction efficiency is relatively low; in addition, the reinforcement method of the steel pipe struts mainly relies on manual operation, and the verticality cannot be guaranteed. Content of the Utility Model

[0003] The utility model relates to a construction limiting tool for high-speed rail B wall, which clamps the B wall formwork through a limiting plate to fix the formwork; in addition, the precision of the upper opening of the formwork can be adjusted through a telescopic device, which not only ensures the verticality of the wall body but also prevents the formwork from floating, and the construction efficiency is improved synchronously; the structure of the whole limiting tool is simple, the manufacturing and maintenance costs are low, and it has better reliability at the same time.

[0004] The technical solution of the utility model is as follows:

[0005] A construction limiting tool for high-speed rail B wall, comprising a cross bar and a limiting plate arranged at the lower end of the cross bar, and telescopic devices are respectively arranged at both ends of the cross bar; the limiting plate comprises two symmetrically arranged L-shaped limiting blocks, and the distance between the limiting blocks is equal to the width of the B wall formwork; the telescopic device comprises a lead screw and a conical foot pad fixedly arranged at the outer end of the lead screw, and the lead screw is in threaded connection with the end of the cross bar.

[0006] Wherein, fixing nuts respectively in threaded connection with the lead screw are fixedly arranged at both ends of the cross bar, the lead screw passes through the fixing nuts and an adjusting nut is fixedly arranged at the end of the lead screw; a first locking nut is arranged at one end of the fixing nut far away from the adjusting nut.

[0007] Wherein, the conical foot pad is made of a soft material and is a non-metal with reversible deformation ability.

[0008] Wherein, a plurality of protrusions are arranged in an array on the end face of the conical foot pad far away from the lead screw.

[0009] Among them, a grooved portion is provided in the middle of the cross bar, and the width of the grooved portion is greater than the width of the B-wall formwork; a screw rod is fixedly provided on the upper section of the limiting block, the width of the grooved portion is greater than the diameter of the screw rod, and the screw rod passes through the grooved portion and is fixed by a second locking nut.

[0010] Among them, a scale is arranged in parallel on one side of the grooved portion of the cross bar.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the original B-wall limiting tooling, the utility model clamps the B-wall formwork through the limiting plate to fix the formwork, and the accuracy of the upper opening of the formwork can be adjusted through the telescopic device, which not only ensures the verticality of the wall body but also prevents the formwork from floating, and the construction efficiency is improved synchronously; the structure of the whole limiting tooling is simple, the manufacturing and maintenance costs are low, and it has better reliability at the same time.

[0013] 2. The telescopic device of the utility model includes a lead screw, a conical foot pad, a fixing nut, an adjusting nut, a first locking nut, etc. The device has a simple structure and cheap materials, and has good economy and reliability.

[0014] 3. The conical foot pad of the utility model adopts a non-metal with reversible deformation ability, preferably a polymer material, etc. It not only has a certain elasticity, but also is wear-resistant and high-temperature resistant, and has a long service life; when being pressed, the fitting property is better and it is not easy to move out of place.

[0015] 4. The conical foot pad of the utility model is provided with a plurality of protrusions on its contact surface. The protrusions not only play a role in increasing the friction force, but also can prevent the formation of a vacuum between the conical foot pad and the formwork during demolding, making the demolding easier.

[0016] 5. The limiting block in the second embodiment of the utility model can be adjusted horizontally in position, and can correspond to the formworks of B-walls with different thicknesses, with high versatility; the scale beside the grooved portion can facilitate the operator to adjust the distance between the limiting blocks, and the operation efficiency is greatly improved. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the utility model;

[0018] Figure 2 is the utility model Figure 1 an enlarged view of the circled part;

[0019] Figure 3 is a partial schematic diagram of the conical foot pad of the utility model;

[0020] Figure 4 is a schematic diagram of the second embodiment of the utility model;

[0021] Figure 5 is the utility modelFigure 4 Enlarged view at the circle.

[0022] The reference numerals in the figure are as follows:

[0023] 1 - cross bar, 2 - limit block, 3 - telescopic device, 4 - lead screw, 5 - conical foot pad, 6 - fixing nut, 7 - adjusting nut, 8 - first locking nut, 9 - protrusion, 10 - grooving, 11 - screw rod, 12 - second locking nut, 13 - scale. Specific embodiments

[0024] The following will combine the drawings and specific embodiments to elaborate on the present utility model in detail.

[0025] Embodiment 1:

[0026] Refer to Figures 1 to 3 , a construction limit tool for the B wall of high - speed rail, including a cross bar 1 and a limit plate arranged at the lower end of the cross bar 1. The limit plate includes two symmetrically arranged L - shaped limit blocks 2, and the distance between the limit blocks 2 is equal to the width of the B wall formwork. The formwork is clamped by the limit blocks 2 to fix the formwork; telescopic devices 3 are respectively arranged at both ends of the cross bar 1. The accuracy of the upper opening of the formwork can be adjusted through the telescopic devices 3, which can prevent the formwork from floating while ensuring the verticality of the wall body; the telescopic device 3 includes a lead screw 4 and a conical foot pad 5 fixedly arranged at the outer end of the lead screw 4, and the lead screw 4 is threadedly connected to the end of the cross bar 1; the structure of the entire limit tool is simple, with low manufacturing and maintenance costs, and at the same time has better reliability.

[0027] Furthermore, fixing nuts 6 threadedly connected to the lead screw 4 are respectively and fixedly arranged at both ends of the cross bar 1. The lead screw 4 passes through the fixing nut 6 and an adjusting nut 7 is fixedly arranged at its end. Rotating the adjusting nut 7 can drive the lead screw 4 to rotate, and the rotation of the lead screw 4 can drive the axial movement of the conical foot pad 5; a first locking nut 8 is arranged at the end of the fixing nut 6 away from the adjusting nut 7. When the position of the limit block 2 is adjusted, the first locking nut 8 is tightened to prevent the lead screw 4 from loosening; the structure of the telescopic device 3 is simple and the selected materials are inexpensive, which is convenient for subsequent maintenance.

[0028] Furthermore, the conical foot pad 5 is made of a soft material and is a non - metal with reversible deformation ability, preferably polymer materials, etc. It not only has a certain elasticity, but also is wear - resistant and high - temperature resistant, with a long service life; when being pressed, the fitting property is better and it is not easy to move; a plurality of protrusions 9 are arranged in an array on the end face of the conical foot pad 5 away from the lead screw 4. The protrusions 9 not only play a role in increasing the friction force, but also can prevent the formation of a vacuum between the conical foot pad 5 and the formwork during demolding, making the demolding easier.

[0029] The working principle of the present utility model:

[0030] See Figure 4 After the formwork of Wall B is erected, a limit tooling is installed at the top of the formwork. The limit blocks 2 are clamped on both sides of the top of the formwork, and the telescopic devices 3 at both ends of the cross bar 1 are respectively propped against Wall A and the protective wall. When the accuracy of the upper opening of the formwork of Wall B deviates, the adjusting nut 7 can be rotated, and the upper opening of the formwork is driven by the limit block 2 to move and correct. After adjustment, the first locking nut 8 is tightened, and then the pouring operation is carried out. After pouring is completed, the first locking nut 8 is loosened first, then the adjusting nut 7 is rotated to demold the cross bar 1 horizontally, and finally the cross bar 1 is withdrawn from above Wall B.

[0031] Embodiment 2:

[0032] The difference between Embodiment 2 and Embodiment 1 is that:

[0033] See Figures 4 to 5 As shown, a groove 10 is provided in the middle of the cross bar 1, and the width of the groove 10 is greater than the width of the formwork of Wall B. A screw rod 11 is fixedly provided on the upper section of the limit block 2, the width of the groove 10 is greater than the diameter of the screw rod 11, and the screw rod 11 passes through the groove 10 and is fixed by a second locking nut 12. When it is necessary to correspond to Wall B with different thicknesses, the position of the limit block 2 on the groove 10 can be adjusted so that the limit tooling can correspond to the formwork of Wall B with different thicknesses, and the versatility is high. A scale 13 is arranged in parallel on one side of the groove 10 of the cross bar 1, and the scale 13 can facilitate the operator to adjust the distance between the limit blocks 2, and the operation efficiency is greatly improved.

[0034] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A high-speed railway B wall construction limit tool, characterized by: The invention comprises a cross bar (1) and a limit plate arranged at the lower end of the cross bar (1), wherein a telescopic device (3) is respectively arranged at both ends of the cross bar (1); the limit plate comprises two symmetrically arranged L-shaped limit blocks (2), wherein the spacing between the limit blocks (2) is equal to the width of the B wall template; the telescopic device (3) comprises a screw rod (4) and a conical foot pad (5) fixedly arranged at the outer end of the screw rod (4), wherein the screw rod (4) is threadedly connected to the end of the cross bar (1).

2. A high-speed railway B-wall construction limiting tool as claimed in claim 1, characterized in that: A fixing nut (6) threadedly connected to the screw rod (4) is fixedly provided at both ends of the cross bar (1); the screw rod (4) passes through the fixing nut (6) and an adjusting nut (7) is fixedly provided at the end thereof; a first locking nut (8) is provided at the end of the fixing nut (6) away from the adjusting nut (7).

3. A high-speed railway B-wall construction limiting tool as claimed in claim 1, characterized in that: The conical foot pad (5) is made of a soft non-metal material with reversible deformation capability.

4. A high-speed railway B-wall construction limiting tool as claimed in claim 3, characterized in that: The end surface of the conical foot pad (5) away from the screw rod (4) is provided with a plurality of protrusions (9) in an array.

5. A high-speed railway B-wall construction limiting tool as claimed in claim 1, characterized in that: A groove (10) is provided in the middle of the crossbar (1), and the width of the groove (10) is greater than the width of the B wall template; a screw rod (11) is fixedly provided on the upper section of the limit block (2), and the width of the groove (10) is greater than the diameter of the screw rod (11); the screw rod (11) passes through the groove (10) and is fixed by a second locking nut (12).

6. A high-speed railway B-wall construction limiting tool as claimed in claim 5, characterized in that: The crossbar (1) is provided with a scale (13) in parallel on one side of the groove (10).

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