Axial steel bar cold extrusion connecting device

Abstract

The utility model provides an axial steel bar cold extrusion connecting device, and relates to the technical field of steel bar connection, the axial steel bar cold extrusion connecting device comprises an outer cylinder barrel, a hydraulic cylinder is arranged in the middle of the inner side of the outer cylinder barrel, a movable jaw seat is arranged on the left side of the upper end of the hydraulic cylinder, and a circular lantern ring is arranged in the middle of the right end of the movable jaw seat; and a fixed jaw seat is arranged on the right side of the upper end of the outer cylinder barrel, and a positioning module is clamped in the middle of the left end of the fixed jaw seat. According to the technical scheme provided by the utility model, when the steel bars are subjected to axial cold extrusion connection, the steel bars to be connected only need to be inserted into the sleeve, and then the sleeve is subjected to diameter shrinkage extrusion through the circular lantern ring, so that the reliable connection between the steel bars is completed, and the tool has the characteristics of light weight, safety, high efficiency and simplicity in operation; the movable jaw seat is small in size and particularly suitable for integral connection of reinforcing meshes or reinforcing cages with dense deformed steel bars, and the universality of use scenes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar connection, in particular to an axial steel bar cold extrusion connection device. Background Art

[0002] Rebar refers to steel used for reinforced concrete and prestressed reinforced concrete. Its cross-section is circular, and sometimes square with rounded corners. It includes plain round steel bars, ribbed steel bars, torsion steel bars, etc. Rebars mainly bear tensile stress in concrete. Deformed steel bars have greater bonding ability with concrete due to the effect of the ribs, and thus can better withstand the effects of external forces. Rebars are widely used in various building structures, especially large, heavy, light thin-walled and high-rise building structures.

[0003] During the use of steel bars, steel bar connection is an indispensable process. The traditional connection method is to use wire tying or welding to connect and fix two steel bars. However, the strength of the connection points of the steel bars connected by the above methods is relatively weak. During use, the connection points of the steel bars are prone to breakage, which can lead to safety accidents.

[0004] In order to solve the above problems, we propose an axial steel bar cold extrusion connection device to solve the above problems. Utility Model Content

[0005] In order to solve the problems in the background technology, the utility model provides an axial steel bar cold extrusion connection device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An axial steel bar cold extrusion connection device comprises an outer cylinder, a hydraulic cylinder is arranged in the middle of the inner side of the outer cylinder, a movable jaw seat is arranged on the left side of the upper end of the hydraulic cylinder, and a circular sleeve ring is provided in the middle of the right end of the movable jaw seat; and a fixed jaw seat is arranged on the right side of the upper end of the outer cylinder, and a positioning module is clamped in the middle of the left end of the fixed jaw seat; the movable jaw seat is driven to slide by the hydraulic cylinder, and the circular sleeve ring can be driven to move by the movable jaw seat, so that the circular sleeve ring can cold extrude the sleeve.

[0008] The middle parts of the upper ends of the movable jaw seat and the fixed jaw seat are both set as open structures, a sleeve is set between the movable jaw seat and the fixed jaw seat, the sleeve is located in the middle part of the left end of the positioning module, and the movable jaw seat, the fixed jaw seat and the sleeve are in the same horizontal plane.

[0009] Preferably, the hydraulic cylinder is movably mounted in the middle of the inner side of the outer cylinder barrel, and the end of the piston rod inside the hydraulic cylinder is fixedly connected to the outer cylinder barrel.

[0010] Preferably, a card interface is provided at the right end of the movable jaw seat, and the circular ring is placed in the middle of the inner side of the card interface.

[0011] Preferably, a limit stopper is provided in the middle of the left end of the fixed jaw seat, and the positioning module is inserted in the middle of the inner side of the limit stopper.

[0012] Preferably, the positioning module includes an upper semi-cylinder and a lower semi-cylinder, and the upper semi-cylinder and the lower semi-cylinder are combined to form a cylindrical shape; wherein, the lower semi-cylinder is inserted into the inner bottom of the limiting bayonet and is fixedly installed in the middle of the left end of the fixed jaw seat by a fixing bolt, and the upper semi-cylinder is inserted into the inner upper end of the limiting bayonet. By combining the upper semi-cylinder and the lower semi-cylinder to form a complete circular cylinder, the right end of the sleeve can be limited and resisted, thereby improving the stability of the sleeve when it is squeezed.

[0013] Preferably, the inner hole of the circular ring is configured as a conical structure.

[0014] Preferably, the two end ports of the sleeve are configured as a 20-degree chamfered structure.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The technical solution proposed in the utility model only requires inserting the steel bar to be connected into the sleeve, and then reducing the diameter of the sleeve by means of a circular sleeve ring to complete a reliable connection between the steel bars during axial cold extrusion connection of the steel bars. The utility model has the characteristics of being light, safe, efficient and easy to operate. In addition, the movable jaw seat in the utility model is small in size, and is particularly suitable for the overall connection of steel meshes or steel cages with denser threaded steel bars, thereby improving the wide range of usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in the extrusion state.

[0019] Figure 3 It is a structural schematic diagram of the movable jaw seat in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the fixed jaw seat and the positioning module in the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the connection state of two steel bars in the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the state after two steel bars in the utility model are connected.

[0023] In the figure: 1. outer cylinder; 2. hydraulic cylinder; 3. piston rod; 4. movable jaw seat; 5. clamping interface; 6. round collar; 7. sleeve; 8. fixed jaw seat; 9. limit clamp; 10. upper semi-cylinder; 11. lower semi-cylinder; 12. positioning module. DETAILED DESCRIPTION

[0024] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0025] Example: Refer to Figure 1-6 As shown, an axial steel bar cold extrusion connection device of this embodiment comprises an outer cylinder 1, a hydraulic cylinder 2 is arranged in the middle of the inner side of the outer cylinder 1, a movable jaw seat 4 is arranged on the left side of the upper end of the hydraulic cylinder 2, and a circular sleeve ring 6 is provided in the middle of the right end of the movable jaw seat 4; and a fixed jaw seat 8 is arranged on the right side of the upper end of the outer cylinder 1, and a positioning module 12 is clamped in the middle of the left end of the fixed jaw seat 8; the middle of the upper ends of the movable jaw seat 4 and the fixed jaw seat 8 are both set as an open structure, a sleeve 7 is arranged between the movable jaw seat 4 and the fixed jaw seat 8, and the sleeve 7 is located in the middle of the left end of the positioning module 12, the hydraulic cylinder 2 is movably installed in the middle of the inner side of the outer cylinder 1, and the end of the piston rod 3 inside the hydraulic cylinder 2 is fixedly connected to the outer cylinder 1;

[0026] Among them, by starting the hydraulic cylinder 2, under the push of the piston rod 3, the hydraulic cylinder 2 slides in the middle of the inner side of the outer cylinder 1. When the hydraulic cylinder 2 slides to the right, it can drive the movable jaw seat 4 to move toward the fixed jaw seat 8, so that the circular ring 6 can reduce the diameter of the sleeve 7 and extrude it.

[0027] Among them, the movable jaw seat 4, the fixed jaw seat 8 and the sleeve 7 are in the same horizontal plane.

[0028] The right end of the movable jaw seat 4 is provided with a card interface 5, and a circular collar 6 is placed in the inner middle of the card interface 5, which plays a role of abutting the circular collar 6, so that the movable jaw seat 4 can drive the circular collar 6 to move and slide.

[0029] A limiting bayonet 9 is provided in the middle of the left end of the fixed jaw seat 8, and a positioning module 12 is inserted in the middle of the inner side of the limiting bayonet 9; the positioning module 12 comprises an upper semi-cylinder 10 and a lower semi-cylinder 11, and the upper semi-cylinder 10 and the lower semi-cylinder 11 are combined to form a cylindrical shape; wherein, the lower semi-cylinder 11 is inserted in the inner bottom of the limiting bayonet 9 and is fixedly installed in the middle of the left end of the fixed jaw seat 8 by fixing bolts, and the upper semi-cylinder 10 is inserted in the inner upper end of the limiting bayonet 9, and the upper semi-cylinder 10 and the lower semi-cylinder 11 are combined to form a complete circular cylinder, which can limit the right end of the sleeve 7 and improve the stability of the sleeve 7 when it is squeezed.

[0030] In some examples, the inner hole of the circular collar 6 is set to a conical structure, so as to achieve diameter reduction extrusion of the sleeve 7.

[0031] In some examples, the two end ports of the sleeve 7 are set to a 20-degree chamfered structure, so as to facilitate the circular ring 6 to be sleeved on the outer surface of the sleeve 7 from the port of the sleeve 7 to perform cold extrusion on the sleeve 7.

[0032] In some examples, the circular collar 6 and the sleeve 7 are both accessories and need to be prepared according to the diameter of the steel bars to be connected.

[0033] The working principle of the utility model is:

[0034] When two steel bars need to be connected by cold extrusion, firstly, the matching circular collar 6, sleeve 7 and positioning module 12 are selected according to the diameter of the steel bars;

[0035] Then, the lower semi-cylinder 11 on the lower side of the positioning module 12 is clamped on the lower side of the left end of the fixed jaw seat 8 and fixed by fixing bolts, and then the two steel bars are respectively placed in the movable jaw seat 4 and the fixed jaw seat 8, and the head ends of the two steel bars are inserted from both ends of the sleeve 7 until they are in contact with each other, wherein the steel bar on the left side needs to pass through the circular collar 6 before being inserted into the sleeve 7, and the circular collar 6 is placed in the clamping interface 5 at the right end of the movable jaw seat 4;

[0036] After the two steel bars are placed, the upper semi-cylinder 10 is inserted into the limit bayonet 9. The upper semi-cylinder 10 and the lower semi-cylinder 11 are combined to form a positioning module 12, which can limit the right end of the sleeve 7;

[0037] After all the preparations are completed, the hydraulic cylinder 2 is started. The thrust of the piston rod 3 causes the hydraulic cylinder 2 to move to the right, thereby driving the movable jaw seat 4 to move toward the fixed jaw seat 8, so that the circular ring 6 reduces the diameter of the sleeve 7, so that the transverse ribs on the steel bar are embedded in the inner hole wall of the sleeve 7, and the outer surface of the steel bar is tightly connected to the inner hole wall of the sleeve 7, so that the two steel bars are tightly connected together, thereby improving the load-bearing capacity of the connection point and effectively solving the safety hazard of easy breakage at the steel bar connection.

[0038] Compared with the traditional technology, the technical solution proposed by the utility model, when performing axial cold extrusion connection of the steel bars by wire binding or welding, only needs to insert the steel bars to be connected into the sleeve 7, and then reduce the diameter of the sleeve 7 through the circular ring 6 to complete the reliable connection between the steel bars. The installation process has the characteristics of light tools, safety, high efficiency and simple operation. In addition, the movable jaw seat 4 in the utility model is small in size, and is particularly suitable for the overall connection of steel meshes or steel cages with denser threaded steel bars, which improves the wide range of usage scenarios.

[0039] In addition, during the process of squeezing the sleeve 7, the circular collar 6 will stay at the end position of the sleeve 7 in the squeezing direction, leaving a section without squeezing. Figure 6 As shown; this prevents the entire structure of the sleeve 7 from being subjected to cold extrusion, which would cause the end opening of the sleeve 7 to be subjected to excessive force and cracks to occur.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An axial steel bar cold extrusion connection device, characterized in that: It comprises an outer cylinder (1), a hydraulic cylinder (2) is arranged in the middle of the inner side of the outer cylinder (1), a movable jaw seat (4) is arranged on the left side of the upper end of the hydraulic cylinder (2), and a circular collar (6) is provided in the middle of the right end of the movable jaw seat (4); Furthermore, a fixed jaw seat (8) is provided on the right side of the upper end of the outer cylinder (1), and a positioning module (12) is clamped in the middle of the left end of the fixed jaw seat (8); The middle parts of the upper ends of the movable jaw seat (4) and the fixed jaw seat (8) are both arranged as an open structure, a sleeve (7) is arranged between the movable jaw seat (4) and the fixed jaw seat (8), the sleeve (7) is located at the middle part of the left end of the positioning module (12), and the movable jaw seat (4), the fixed jaw seat (8) and the sleeve (7) are located in the same horizontal plane.

2. The axial steel bar cold extrusion connection device according to claim 1, characterized in that: The hydraulic cylinder (2) is movably mounted in the middle of the inner side of the outer cylinder barrel (1), and the end of the piston rod (3) inside the hydraulic cylinder (2) is fixedly connected to the outer cylinder barrel (1).

3. The axial steel bar cold extrusion connection device according to claim 1, characterized in that: A card interface (5) is provided at the right end of the movable jaw seat (4), and the circular collar (6) is placed in the middle of the inner side of the card interface (5).

4. The axial steel bar cold extrusion connection device according to claim 1, characterized in that: A limit snap-in (9) is provided at the middle of the left end of the fixed jaw seat (8), and the positioning module (12) is plugged into the middle of the inner side of the limit snap-in (9).

5. The axial steel bar cold extrusion connection device according to claim 4, characterized in that: The positioning module (12) comprises an upper semi-cylinder (10) and a lower semi-cylinder (11), wherein the upper semi-cylinder (10) and the lower semi-cylinder (11) are combined to form a cylindrical shape; The lower semi-cylinder (11) is inserted into the inner bottom of the limiting bayonet (9) and is fixedly mounted on the middle of the left end of the fixed jaw seat (8) by means of fixing bolts, and the upper semi-cylinder (10) is inserted into the inner upper end of the limiting bayonet (9).

6. The axial steel bar cold extrusion connection device according to claim 1, characterized in that: The inner hole of the circular collar (6) is configured as a conical structure.

7. The axial steel bar cold extrusion connection device according to claim 1, characterized in that: The two end ports of the sleeve (7) are arranged to have a 20-degree chamfered structure.

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