Equipment for connecting reinforcing steel bars

Abstract

Equipment for connecting reinforcing steel bars comprises a supporting piece, an extrusion assembly and a reinforcing steel bar connecting assembly, the extrusion assembly comprises a driving piece and a push block, the driving piece is fixed to the supporting piece, the driving piece is connected with the push block and drives the push block to move in a reciprocating mode, and the supporting piece is provided with a through groove allowing the reinforcing steel bars on the two sides to pass through and further provided with a space for containing the push block and the reinforcing steel bar connecting assembly. The reinforcing steel bar connecting assembly comprises a first outer sleeve, a second outer sleeve and an inner sleeve, the first outer sleeve and the second outer sleeve are arranged outside the inner sleeve in a sleeving mode and oppositely extrude the inner sleeve so that reinforcing steel bars on the two sides can be fixed to the inner sleeve, and when the reinforcing steel bars are connected, after the two ends of the reinforcing steel bar connecting assembly are inserted into the reinforcing steel bars, the driving piece pushes the pushing block to extrude the first outer sleeve; and meanwhile, the second outer sleeve is limited by space until the first outer sleeve and the second outer sleeve press the inner sleeve to fix the steel bars on the two sides. The device has the advantages that the device is convenient, labor-saving and easy to carry, and steel bars are connected without rotation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for reinforcing bar connection applied to building structure. BACKGROUND

[0002] The reinforcing bar mechanical connection forms in the existing building structure mainly include cold extrusion connection and threaded connection.

[0003] The cold extrusion connection is to adopt the steel sleeve pipe with high ductility and moderate strength, extrude the outer circle of the steel sleeve pipe to make the steel sleeve pipe produce plastic deformation, and tightly hold the ribbed steel bar in the hole of the steel sleeve pipe, so as to realize the connection of two ribbed steel bars.

[0004] The threaded connection includes taper threaded connection, upsetting straight threaded connection and rolling straight threaded connection, the two reinforcing bars to be connected are processed by special equipment, the reinforcing bar ends are made into reinforcing bar threads with corresponding threads, and the two reinforcing bars are connected by the connecting sleeve with corresponding internal threads, so as to realize the reinforcing bar connection. When connecting, the connecting sleeve needs to be screwed into one reinforcing bar thread first, and then the other reinforcing bar is screwed into the sleeve and tightened, so that the two reinforcing bars are connected and transmit force. At least one reinforcing bar needs to rotate and move along the axial direction in the connecting process, so the existing reinforcing bar connection mode is only suitable for single reinforcing bar connection.

[0005] With the development of the construction industry and the continuous improvement of the construction technology, the steel bar componentization construction is gradually adopted in the construction, that is, a plurality of reinforcing bars are made into integral reinforcing mesh and reinforcing cage before the reinforcing bar connection construction, and then the integral reinforcing bar component connection is carried out. In this reinforcing bar component connection construction, the reinforcing bar can only move along the axial direction and cannot rotate, and cannot be partially moved. Therefore, the existing reinforcing bar connection mode cannot realize the integral connection of the reinforcing bar component. For example, the prefabricated building technology is being vigorously promoted. Since the exposed reinforcing bar of the component cannot rotate, the existing reinforcing bar mechanical connection technology cannot realize the reinforcing bar connection, and the reinforcing bar connection between the components in the prefabricated building can only be realized by the grouting sleeve, but the grouting sleeve has high cost, complicated construction process, and the quality of the grouting construction directly affects the engineering quality, so it is difficult to guarantee the reinforcing bar connection quality. SUMMARY

[0006] The utility model solves the technical problems of overcoming the above-mentioned deficiencies of the prior art and providing a reinforcing bar connecting device, which can connect the reinforcing bars without rotating and is convenient to operate.

[0007] The utility model adopts the technical scheme for solving the above-mentioned problems:

[0008] The utility model provides a kind of equipment of connecting reinforcing bar, it is characterized by including support, extrusion assembly, connecting reinforcing bar assembly, the extrusion assembly includes driving piece, push block, driving piece is fixed on support, driving piece connects push block and drives push block reciprocating movement, support is provided with the through slot that can allow two side reinforcing bars to pass, also set up the space of accommodating push block and connecting reinforcing bar assembly, the connecting reinforcing bar assembly includes first outer sleeve, second outer sleeve, inner sleeve, first outer sleeve, second outer sleeve are respectively sleeved in outer sleeve and extrude inner sleeve towards each other and two side reinforcing bars are fixed on inner sleeve by inner sleeve, when reinforcing bar is connected, the two ends of connecting reinforcing bar assembly are inserted into reinforcing bar, driving piece pushes push block extrusion first outer sleeve, while second outer sleeve is limited by space, to first outer sleeve, second outer sleeve press inner sleeve and fix two side reinforcing bars.

[0009] Better, the through slot is long slot, so that a plurality of connecting reinforcing bar assemblies can be placed in each long slot, so that a plurality of reinforcing bars can be connected.

[0010] More specifically, the driving piece is an oil cylinder, and the piston rod of the oil cylinder is fixed with the push block.

[0011] Better, the reinforcing bar connecting assembly includes first outer sleeve, second outer sleeve and inner sleeve; the inner sleeve wall is uniformly provided with a plurality of through grooves, the two ends of the grooves are connected by connecting strips, the first outer sleeve and the second outer sleeve are respectively sleeved at the two ends of the inner sleeve, and the reinforcing bars in the inner sleeve are fixed by extruding the inner sleeve towards each other through the first outer sleeve and the second outer sleeve.

[0012] Better, the inner wall of the first outer sleeve is provided with stepped cylinders, and the adjacent cylinders are connected by circular tables.

[0013] Better, the connecting strip is integrated with the inner sleeve wall, and the groove is directly cut on the wall.

[0014] Better, the inner sleeve wall of the inner sleeve is provided with inner sleeve threads, and the sleeve threads are consistent with the reinforcing bar threads on the outer wall of the reinforcing bar.

[0015] Better, the outer wall of the inner sleeve is also provided with positioning holes for positioning the inner sleeve, facilitating positioning during installation.

[0016] Better, the outer wall of the inner sleeve is also provided with positioning holes for positioning the inner sleeve, facilitating positioning during installation.

[0017] Better, the inner sleeve outer cylinder wall and the first outer sleeve corresponding end inner cylinder wall are provided with mutually matched extruded circular truncated cones, and the inner sleeve outer cylinder wall and the second outer sleeve corresponding end inner cylinder wall are provided with mutually matched extruded circular truncated cones.

[0018] The device for connecting steel bars has the advantages that the device for connecting steel bars can conveniently, labor-savingly and non-rotatably connect steel bars through extrusion of the outer sleeve on the inner sleeve by the extrusion assembly, and the device is easy to carry. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Figure 1 is a structural schematic view of a steel bar connecting assembly of a device for connecting steel bars according to an embodiment of the present application.

[0020] Figure 2 Figure 2 is a structural schematic view of an inner sleeve of a device for connecting steel bars according to an embodiment of the present application.

[0021] Figure 3 Figure 3 is a structural schematic view of the device for connecting steel bars before extrusion according to an embodiment of the present application.

[0022] Figure 4 Figure 4 is a structural schematic view of the device for connecting steel bars after extrusion according to an embodiment of the present application.

[0023] Figure 5 Figure 5 is a structural schematic view of a steel bar connecting assembly of a device for connecting steel bars according to another embodiment of the present application.

[0024] Figure 6 Figure 6 is a structural schematic view of an inner sleeve of a device for connecting steel bars according to another embodiment of the present application.

[0025] Figure 7 Figure 7 is a front view of the device for connecting steel bars according to an embodiment of the present application.

[0026] Figure 8 Figure 8 is a side view of the device for connecting steel bars according to an embodiment of the present application.

[0027] Figure 9 Figure 9 is a top view of the device for connecting steel bars according to an embodiment of the present application.

[0028] Figure 10 Figure 10 is a front view of the device for connecting steel bars according to another embodiment of the present application.

[0029] Figure 11 Figure 11 is a top view of an upper plate of the device for connecting steel bars according to another embodiment of the present application.

[0030] Figure 12 Figure 12 is a top view of a moving plate of the device for connecting steel bars according to another embodiment of the present application.

[0031] Figure 13 Figure 2 is a top view of the lower plate of the device for connecting steel bars according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] The present application is further illustrated below in conjunction with the drawings and embodiments.

[0033] Embodiment 1

[0034] As shown in Figure 1, a device for connecting steel bars comprises a steel bar connecting assembly, an extrusion assembly 6, and a mold frame 5. Figures 7-9 As shown in Figure 2, the steel bar connecting assembly comprises a first outer sleeve 2, a second outer sleeve 1, and an inner sleeve 3.

[0035] Figures 1-6 The first outer sleeve 2 has a stepped cylinder provided on the inner wall thereof, and adjacent cylinders are connected by a circular platform. In this embodiment, a first cylinder 22, a second cylinder 24, and a third cylinder 26 are provided, the first cylinder 22 and the second cylinder 24 are connected by a first circular platform 23, and the second cylinder 24 and the third cylinder 26 are connected by a second circular platform 25.

[0036] The second outer sleeve 1 is identical to the first outer sleeve 2.

[0037] The inner sleeve 3 has a plurality of through grooves 33 uniformly provided on the sleeve wall thereof, and the two ends of each groove 33 are connected by connecting strips 31 and 32. In this way, the inner sleeve 3 remains integral, facilitating carrying and installation.

[0038] The connecting strips 31 and 32 can also be integral with the sleeve wall of the inner sleeve 3, and the grooves 33 can be directly cut on the sleeve wall.

[0039] The inner sleeve 3 has an inner sleeve thread 34 provided on the inner sleeve wall thereof, and the inner sleeve thread 34 is identical to the steel thread on the outer wall of the steel bar. When the steel bar is connected by the connecting device and the inner sleeve 3 is extruded, the inner sleeve thread 34 can better engage with the steel thread on the outer wall of the steel bar.

[0040] The inner sleeve 3 has a stepped cylinder provided on the outer wall of the corresponding end thereof, and adjacent cylinders are connected by a circular platform. In this embodiment, a fourth cylinder 35, a fifth cylinder 37, and a sixth cylinder 39 are provided, the fourth cylinder 35 and the fifth cylinder 37 are connected by a first circular platform 36, and the fifth cylinder 37 and the sixth cylinder 39 are connected by a second circular platform 38.

[0041] The inner sleeve 3 further has a positioning hole 30 provided on the outer wall thereof, which is used for positioning the inner sleeve 3 and facilitating positioning during installation.

[0042] The inner sleeve 3 further has a positioning hole 30 provided on the outer wall thereof, which is used for positioning the inner sleeve 3 and facilitating positioning during installation.

[0043] ​The extrusion assembly includes an oil cylinder 61 and a push block 63. The piston rod 62 of the oil cylinder 61 is connected to the push block 63 by a screw 64. The push block 63 is moved back and forth by the oil cylinder 61 through the piston rod, so as to extrude the first outer sleeve 2 and make the second outer sleeve 2 be extruded.

[0044] The mold frame 5 is provided with upper and lower through grooves 51. The upper and lower steel bars 4 can pass through the upper and lower through grooves 51 respectively.

[0045] The mold frame 5 is further provided with a lateral space 52. The push block 63 is arranged in the lateral space 52. The oil cylinder 61 is arranged at the top of the mold frame 5. The piston rod of the oil cylinder 61 penetrates through the top of the mold frame 5 and is connected to the push block 63. The push block 63 is moved up and down by the oil cylinder 61 through the piston rod.

[0046] The steel bar connecting assembly can be arranged in the lateral space 52. The bottom of the steel bar connecting assembly is supported by the bottom of the lateral space 52. The outer diameter of the second outer sleeve 2 is greater than the width of the through groove 51, so that the second outer sleeve 2 is limited by the bottom surface of the space.

[0047] When the device for connecting steel bars is used, the first outer sleeve 1 and the second outer sleeve 2 of the steel bar connecting assembly are respectively sleeved on the two ends of the inner sleeve 3. Then the whole is sleeved into the lower steel bar 4. Then the upper steel bar 4 is aligned and connected with the lower steel bar 4. The steel bar connecting assembly is moved upwards to be between the upper and lower steel bars 4. The inner sleeve 3 is positioned on the steel bar 4 by inserting the positioning pin 41 into the positioning hole 30 of the inner sleeve 3, as shown in Figure 3 The oil cylinder 61 in the extrusion assembly 6 is started to push the push block 63 through the piston rod to extrude the first outer sleeve 1. The second outer sleeve 2 is limited by the bottom of the lateral space 52. With the increase of the extrusion force, the two sleeves of the first outer sleeve 1 and the second outer sleeve 2 move towards each other. The first outer sleeve 1 and the second outer sleeve 2 make the inner sleeve 3 shrink towards the axis of the inner sleeve 3. Finally, the steel bar 4 is tightly gripped to fix the upper and lower steel bars, as shown in Figure 4 .

[0048] Embodiment 2

[0049] As shown in Figure 5 , 6 Another example of a steel bar connecting assembly of a device for connecting steel bars includes a third outer sleeve 10, a fourth outer sleeve 20 and a second inner sleeve 30. The outer wall of the second inner sleeve 30 is a circular truncated cone 350. The third outer sleeve 10 and the fourth outer sleeve 20 are the same. The inner wall of the fourth outer sleeve 20 is an inner circular truncated cone 201 corresponding to the circular truncated cone 350 of the outer wall of the inner sleeve 30.

[0050] A plurality of through grooves 330 are uniformly arranged on the wall of the second inner sleeve 30. The two ends of the through grooves 330 are respectively connected by a first connecting strip 310 and a second connecting strip 320. In this way, the inner sleeve 30 is still an integral whole, which is convenient for carrying and installation.

[0051] The inner sleeve thread 340 is arranged on the inner sleeve wall of the second inner sleeve 30, and is consistent with the steel bar thread of the steel bar outer wall. When the second inner sleeve 3 is extruded by the connecting device, the inner sleeve thread 340 can better engage with the steel bar thread of the steel bar outer wall.

[0052] The relationship among the third outer sleeve 10, the fourth outer sleeve 20, and the second inner sleeve 30 and the use method are the same as those of example 1, and will not be described again.

[0053] As shown in FIG. 8, an apparatus for connecting steel bars includes a support frame, an extrusion assembly 6, and a steel bar connecting assembly of the present example or example 1. Figures 10-13

[0054] The support frame and the extrusion assembly 6 are different from those of example 1.

[0055] The extrusion assembly includes a hydraulic cylinder 61 and a moving block 65. The piston rod of the hydraulic cylinder 61 is connected to the moving block 65, and the moving block 65 is arranged between the upper plate 8 and the lower plate 9.

[0056] The moving block 65 is provided with a through hole 652, and a screw rod passes through the through hole 652, so that the moving block 65 is horizontally limited by the screw rod and moves up and down.

[0057] The support frame includes an upper plate 8 and a lower plate 9, and the upper plate 8 and the lower plate 9 are connected together by a screw rod and a nut 10.

[0058] The upper plate 8 is provided with an elongated groove 81, and the upper steel bar 4 can pass through the upper plate elongated groove 81.

[0059] The moving block 65 is provided with a moving block elongated groove 651 opposite to the upper plate elongated groove 81, and the upper steel bar 4 can pass through the moving block elongated groove 651.

[0060] The lower plate 9 is provided with a lower plate elongated groove 91 opposite to the upper plate elongated groove 81 and the moving block elongated groove 651, and the lower steel bar 4 can pass through the lower plate elongated groove 91.

[0061] ​When the reinforcing steel bar connecting device of the present embodiment is used, the first outer sleeve 1 and the second outer sleeve 2 of the reinforcing steel bar connecting assembly are respectively sleeved on the two ends of the inner sleeve 3, and then the whole is sleeved into the lower steel bar 4. Then the upper steel bar 4 is aligned and connected with the lower steel bar 4. The reinforcing steel bar connecting assembly is moved upwards to the space between the upper and lower steel bars 4. The positioning pin 41 is inserted into the positioning hole 30 of the inner sleeve 3 to position the inner sleeve 3 on the steel bar 4. Another reinforcing steel bar connecting assembly is installed in the elongated groove of the upper plate 8 and the lower plate 9 by the same method. The oil cylinder 61 in the extrusion assembly 6 is started to push the moving block 65 through the piston rod to extrude the first outer sleeve 1. The second outer sleeve 2 is limited by the bottom of the lower plate 9. With the increase of the extrusion force, the two sleeves of the first outer sleeve 1 and the second outer sleeve 2 move towards each other. The first outer sleeve 1 and the second outer sleeve 2 make the inner sleeve 3 shrink towards the inner sleeve axis. Finally, the steel bars 4 are clamped tightly to fix the upper and lower steel bars. See Figure 4 .

Claims

1. An apparatus for connecting reinforcing bars, characterised in that: The utility model provides a steel bar connecting device, including support, extrusion assembly, connecting steel bar assembly, the extrusion assembly includes drive piece, push block, drive piece is fixed on the support, drive piece connects push block and drives push block to move back and forth, the support sets up the through slot that can allow two side steel bars to pass, still sets up the space containing push block and connecting steel bar assembly, connecting steel bar assembly includes first outer sleeve, second outer sleeve, inner sleeve, first outer sleeve, second outer sleeve respectively cover in the outer of inner sleeve and mutually extrude inner sleeve and fix two side steel bars on inner sleeve, when steel bar connects, the both ends of connecting steel bar assembly are inserted into steel bar, drive piece pushes push block and extrudes first outer sleeve, and simultaneously, second outer sleeve is limited by the space, to first outer sleeve, second outer sleeve press the inner sleeve and fix two side steel bars.

2. The device for connecting reinforcing bars according to claim 1, characterized in that: The through slot is a long slot, and each long slot can accommodate a plurality of connecting steel bar assemblies.

3. The device for connecting reinforcing bars according to claim 1, characterized in that: The drive piece is an oil cylinder, and the piston rod of the oil cylinder is fixed to the push block.

4. The device for connecting reinforcing bars according to claim 1, characterized in that: The utility model discloses a steel bar connecting device, including first outer sleeve, second outer sleeve, inner sleeve, the even setting of inner sleeve barrel wall goes through a few recesses, recess two ends are connected respectively by connecting strip, first outer sleeve, second outer sleeve respectively cover in the both ends of inner sleeve, and fix the steel bar in inner sleeve through mutually extruding inner sleeve of first outer sleeve, second outer sleeve.

5. The device for connecting reinforcing bars according to claim 1, characterized in that: The first outer sleeve inner wall is provided with a stepped cylinder, and adjacent cylinders are connected through a circular table.

6. The device for connecting reinforcing bars according to claim 1, characterized in that: The inner sleeve inner wall is provided with inner sleeve threads, and the sleeve threads are consistent with the steel threads on the outer wall of the steel bar.

7. The device for connecting reinforcing bars according to claim 1, characterized in that: The inner sleeve outer wall is provided with a positioning hole for positioning the inner sleeve.

8. The device for connecting reinforcing bars according to claim 1, characterized in that: The inner sleeve outer wall and the inner wall of the corresponding end of the first outer sleeve are provided with three stepped cylinders that are extruded with each other, and adjacent cylinders are connected through a circular table.

9. The device for connecting reinforcing bars according to claim 1, characterized in that: The inner sleeve outer wall and the inner wall of the corresponding end of the second outer sleeve are provided with three stepped cylinders that are extruded with each other, and adjacent cylinders are connected through a circular table.

10. The device for connecting reinforcing bars according to claim 4, characterized in that: The connecting strip is integrated with the inner sleeve barrel wall, and the recess is directly cut on the barrel wall. The connecting strip is integrated with the inner sleeve barrel wall, and the recess is directly cut on the barrel wall.

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