Horse stool for plate type steel bar protective layer

Abstract

The utility model relates to the technical field of construction equipment, in particular to a horse stool for a plate type steel bar protective layer. The device comprises a main rod, the side of the main rod is connected with two supporting cross rods through a connecting inhaul cable, and the two supporting cross rods are distributed in the axial direction of the main rod at intervals; the side wall of the main rod is provided with a sliding groove used for being connected with the supporting cross rod in an inserted mode in the radial direction, the groove length direction of the sliding groove is parallel to the axial direction of the main rod, and the groove length of the sliding groove is larger than the thickness of the supporting cross rod. A positioning plug pin capable of penetrating through the supporting cross rod in an inserted mode is axially connected to the end of the main rod in an inserted mode so that the supporting cross rod can be locked to be perpendicular to the main rod. The utility model has the advantages that the safety is high, the cost is low, the rigidity reaches the standard, and rust spots cannot be generated in the concrete.

Description

TECHNICAL FIELD

[0001] The utility model relates to construction equipment technical field, concretely is a horse stool for board class steel bar protective layer. BACKGROUND

[0002] Horse stool steel, construction term. It is similar to horse stirrup, so it is named horse stirrup steel, also called support steel bar. It is mostly used in the middle of the upper and lower two layers of steel bars in the reinforced concrete protective layer, so as to ensure that the size of the steel bar protective layer after the concrete molding reaches the specification requirements.

[0003] The existing horse stool structure is mostly as recorded in the text of Chinese patent publication No. CN201972310U named steel horse stool, Y type support structure is adopted, and the upper layer steel bar and the lower layer steel bar are supported. However, in actual implementation, since the horse stool is an iron product, the iron horse stool in the cast-in-place slab after molding is easy to produce rust spots due to long-term contact with air. In addition, the horse stool remaining in the concrete does not improve the bending strength of the concrete, not only exists the waste of horse stool material, and when the concrete is broken, the horse stool arranged perpendicular to the concrete slab also exists certain safety hidden danger.

[0004] Of course, in addition to the iron horse stool, there are other steel bar protective layer control measures, such as: using plastic horse stool, its function is similar to that of iron horse stool and will not rust. But its condensation force with concrete is poor, easy to cause concrete leakage, and the plastic horse stool also has the problem of insufficient rigidity. In addition, concrete cushion block form can also be used, but its cost is high and the operation is complex; if the compressive strength of the concrete cushion block is not high, it is easy to be damaged by stepping.

[0005] Therefore, how to form a horse stool with strong safety, low cost, standard rigidity and no rust spots in the concrete is an urgent problem to be solved at present. UTILITY MODEL CONTENTS

[0006] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a horse stool for board class steel bar protective layer, which has the advantages of strong safety, low cost, standard rigidity and no rust spots in the concrete.

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0008] A horse stool for board class steel bar protective layer, comprising a main rod, a support cross bar connected to the side of the main rod through a connecting cable, and the support cross bar is arranged as two rods spaced along the axial direction of the main rod; the side wall of the main rod is provided with a sliding groove for radially inserting the support cross bar, and the groove length direction of the sliding groove is parallel to the axial direction of the main rod, and the groove length of the sliding groove is greater than the thickness of the support cross bar; the end of the main rod is axially inserted with a positioning pin which can be inserted through the support cross bar, so as to lock the support cross bar perpendicular to the main rod.

[0009] As a further scheme of the utility model: the main rod is axially arranged with a positioning hole for the positioning plug to penetrate, and the axis of the positioning hole intersects with the groove cavity of the sliding groove.

[0010] As a further scheme of the utility model: the positioning hole penetrates both ends of the main rod along the axial direction of the main rod.

[0011] As a further scheme of the utility model: the connecting cable is detachably connected with the supporting cross bar, and the sliding groove is arranged as at least three along the axial direction of the main rod and is spaced, and the connecting cable is fixed at each sliding groove.

[0012] As a further scheme of the utility model: at least three sliding grooves on the same side of the main rod are taken as a group of installation units, and the installation units are arranged as at least two groups uniformly distributed around the axial center of the main rod.

[0013] As a further scheme of the utility model: the supporting cross bar is arranged with a locking insertion hole for the positioning plug to penetrate, the locking insertion hole is a long hole structure with the length direction of the hole perpendicular to the supporting cross bar, and the inner walls of the two long edges of the locking insertion hole perpendicular to the supporting cross bar abut against the positioning plug.

[0014] As a further scheme of the utility model: the outer end of the positioning plug is fixed with a handle.

[0015] As a further scheme of the utility model: the handle is connected with the end of the main rod through a transmission cable, and the length of the transmission cable is greater than the length of the positioning plug.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1, the supporting cross bar is locked through the positioning plug during the supporting operation, which can ensure the stable rigid support of the reinforcing steel bar; in addition, the supporting cross bar can be folded and pulled out before the initial setting of the concrete, and then the voids can be eliminated by using the flat plate vibration. Compared with the traditional horse stool remaining in the concrete, the device can be recycled to reduce the cost and reduce the safety hidden danger after the concrete is broken, in addition, the pulled out main rod and supporting cross bar also have the advantage that no rust point is generated in the concrete.

[0018] 2, the main rod is axially arranged with a positioning hole for the positioning plug to penetrate, and the axis of the positioning hole intersects with the groove cavity of the sliding groove. The arrangement structure makes the positioning plug not occupy the space beside the main rod, and the abutting condition of the positioning plug and the positioning hole can be observed through the slot of the sliding groove to realize the convenient plug-in cooperation of the positioning plug and the positioning hole.

[0019] 3. The positioning hole extends through both ends of the main rod along its axial direction. Compared with the positioning hole structure with one end sealed, the positioning hole is less likely to retain concrete and is also easier to clean.

[0020] 4. The connecting cable and the supporting crossbar are detachably connected, and the sliding grooves are set with at least three spaced apart along the axial direction of the main bar, with a connecting cable fixed at each sliding groove. In use, by fixing the supporting crossbar to the connecting cable at different sliding grooves, support can be achieved between upper and lower layers of reinforcing bars with different spacing, effectively improving the versatility of this application. Attached Figure Description

[0021] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 2 This is a top-section structural diagram of the present invention.

[0023] Figure 3 This is a top view of the main rod structure in this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of this utility model.

[0025] In the diagram: 10. Main rod; 11. Connecting cable; 12. Slide groove; 13. Positioning hole; 20. Support crossbar; 21. Locking hole; 30. Positioning pin; 31. Handle; 32. Transmission cable. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:

[0028] The specific structure of this utility model is as follows: Figures 1-4As shown, the main structure thereof comprises a main rod 10, specifically, a slide groove 12 is formed in the side wall of the main rod 10, and the length direction of the slide groove 12 is parallel to the axial direction of the main rod 10, and the slide groove 12 is arranged for radially inserting and supporting the support cross rod 20 on the main rod 10. The end of the main rod 10 is axially inserted with a positioning pin 30 which can be inserted through the support cross rod 20, so as to lock the support cross rod 20 to be perpendicular to the main rod 10; the support cross rod 20 is arranged to be axially spaced apart from two. In use, the main rod 10 is arranged to be perpendicular to the plate surface of the reinforced concrete, and the two support cross rods 20 are arranged to be between the upper layer of steel bars and the lower layer of steel bars, and the two support cross rods 20 are respectively in abutment with the upper layer of steel bars and the lower layer of steel bars, so as to control the spacing between the upper layer of steel bars and the lower layer of steel bars in the reinforced concrete, so as to prevent the spacing between the upper layer of steel bars and the lower layer of steel bars from changing due to the impact on the steel bars during the concrete pouring process. After the concrete pouring is completed and before the initial setting of the concrete, since the coarse and fine aggregates of the concrete have the supporting property for the upper layer of steel bars and the lower layer of steel bars, at this time, the positioning pin 30 can be pulled out, so as to release the locking of the support cross rod 20, and then the main rod 10 is pulled out. Since the length of the slide groove 12 is greater than the thickness of the support cross rod 20, during the pulling-out process of the main rod 10, the support cross rod 20 can slide out of the slide groove 12 and swing to be parallel to the main rod 10, so as to realize the folding of the support cross rod 20; at this time, the main rod 10 will not generate great resistance when driving the support cross rod 20 to slide out, and the hole left on the concrete is minimized. Finally, after the main rod 10 and the support cross rod 20 are pulled out, the residual holes are eliminated through the flat plate vibration, and the main rod 10 and the support cross rod 20 are cleaned, and then the main rod 10 and the support cross rod 20 can be used again. In the present application, the support cross rod 20 is locked through the positioning pin 30 during the supporting operation, so as to ensure the stable and rigid support for the steel bars; in addition, the support cross rod 20 can be folded and pulled out before the initial setting of the concrete, and then the holes are eliminated through the flat plate vibration. Compared with the traditional horse stool which is left in the concrete, the present application can realize the recycling of the device to reduce the cost, and reduce the safety hidden danger after the concrete is broken, in addition, the pulled-out main rod 10 and the support cross rod 20 also have the advantage that no rust point is generated in the concrete.

[0029] On the basis of the above, Figure 1 As shown, the main rod 10 is axially arranged with a positioning hole 13 for the positioning pin 30 to penetrate, and the axis of the positioning hole 13 intersects with the cavity of the slide groove 12. The arrangement structure makes the positioning pin 30 not occupy the space beside the main rod 10, and at the same time, the abutment condition of the positioning pin 30 and the positioning hole 13 can be observed through the slot opening of the slide groove 12, so as to realize the convenient plug-in cooperation of the positioning pin 30 and the positioning hole 13.

[0030] Further, Figure 1As shown, the positioning hole 13 penetrates through both ends of the main rod 10 along the axial direction of the main rod 10, and compared with the positioning hole 13 in the blind hole structure with one end blocked, the positioning hole 13 is less likely to have residual concrete, and it is also convenient to clean the residual concrete in the positioning hole 13.

[0031] On the basis of the above, Figure 1 and Figure 4 As shown, the connecting cable 11 is detachably connected with the support cross rod 20, and the sliding groove 12 is arranged to be at least three spaced apart along the axial direction of the main rod 10, and each sliding groove 12 is fixed with the connecting cable 11. In use, by fixing the support cross rod 20 on the connecting cable 11 at different sliding grooves 12, the support between the upper layer reinforcement and the lower layer reinforcement with different spacing can be realized, effectively improving the universality of the present application.

[0032] On the basis of the above, Figure 2 As shown, at least three sliding grooves 12 located on the same side of the main rod 10 are taken as a group of installation units, and the installation unit is arranged to be at least two groups uniformly distributed around the axial center of the main rod 10, and by installing the support cross rod 20 at each group of sliding grooves 12, the synchronous support of multiple pairs of upper layer reinforcement and lower layer reinforcement can be realized.

[0033] On the basis of the above, Figure 3 As shown, the support cross rod 20 is arranged with a locking insertion hole 21 for the positioning bolt 30 to penetrate, and the locking insertion hole 21 is a long hole structure with the length direction of the hole perpendicular to the support cross rod 20, and the inner walls of the two long edges of the locking insertion hole 21 perpendicular to the support cross rod 20 are in abutment with the positioning bolt 30. The long hole structure of the locking insertion hole 21 makes there be a gap between the two short plate inner walls of the locking insertion hole 21 and the positioning bolt 30, reducing the difficulty of positioning the end of the length direction of the hole during the processing of the locking insertion hole 21.

[0034] In order to facilitate the pulling out of the positioning bolt 30, as shown, Figure 1 The outer end of the positioning bolt 30 is fixed with a handle 31. In addition, in order to facilitate the pulling out of the main rod 10, the handle 31 and the end of the main rod 10 are connected with a transmission cable 32, and the length of the transmission cable 32 is greater than the length of the positioning bolt 30, so that a handle does not need to be additionally provided on the main rod 10, and only by continuously pulling the handle 31 upwards, the positioning bolt 30 and the main rod 10 can be pulled out in sequence.

[0035] Of course, the utility model is not limited to the details of the above exemplary embodiments for those skilled in the art, and also includes the same or similar structures that can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model 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 included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0037] The technical, shape, structure parts not described in detail in the utility model are well-known technologies.

Claims

1. A stirrup for the protective layer of reinforcing bars in slabs, characterized in that, The system includes a main rod (10), and a support crossbar (20) is connected to the side of the main rod (10) by a connecting cable (11). The support crossbar (20) is configured as two crossbars spaced apart along the axial direction of the main rod (10). The side wall of the main rod (10) is provided with a groove (12) for radially inserting the support crossbar (20). The groove length direction of the groove (12) is parallel to the axial direction of the main rod (10), and the groove length of the groove (12) is greater than the thickness of the support crossbar (20). The end of the main rod (10) is axially inserted with a positioning pin (30) that can be inserted through the support crossbar (20) to lock the support crossbar (20) to be perpendicular to the main rod (10).

2. A stirrup for the protective layer of steel reinforcement in slabs according to claim 1, characterized in that, The main rod (10) has a positioning hole (13) arranged axially for the positioning pin (30) to pass through, and the axis of the positioning hole (13) intersects with the groove cavity of the slide (12).

3. A stirrup for the protective layer of steel reinforcement in slabs according to claim 2, characterized in that, The positioning hole (13) passes through both ends of the main rod (10) along the axial direction of the main rod (10).

4. A stirrup for the protective layer of steel reinforcement in slabs according to claim 1, 2, or 3, characterized in that, The connecting cable (11) is detachably connected to the supporting crossbar (20), and the slide groove (12) is set to at least three spaced along the axial direction of the main rod (10), and a connecting cable (11) is fixed at each slide groove (12).

5. A stirrup for the protective layer of steel reinforcement in slabs according to claim 4, characterized in that, An installation unit is formed by at least three sliding grooves (12) located on the same side of the main rod (10), and the installation unit is provided with at least two sets of grooves evenly distributed around the axis of the main rod (10).

6. A stirrup for the protective layer of steel reinforcement in slabs according to claim 1, 2, or 3, characterized in that, The support crossbar (20) is provided with a locking hole (21) through which the positioning pin (30) passes. The locking hole (21) is a long hole structure with the length direction of the hole perpendicular to the support crossbar (20), and the inner walls of the two long sides of the locking hole (21) perpendicular to the support crossbar (20) abut against the positioning pin (30).

7. A stirrup for the protective layer of steel reinforcement in slabs according to claim 1, 2, or 3, characterized in that, A handle (31) is fixed to the outer end of the positioning pin (30).

8. A stirrup for the protective layer of steel reinforcement in slabs according to claim 7, characterized in that, A transmission cable (32) is connected between the handle (31) and the end of the main rod (10), and the length of the transmission cable (32) is greater than the length of the positioning pin (30).

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