Steel bar pre-straightening device

Abstract

The embodiment of the utility model discloses a steel bar pre-straightening device which comprises a support, a movable die, a straightening die and a driving device. One end of the movable die is hinged to the support, the other end of the movable die is detachably connected with the support, a containing space is formed between the middle of the movable die and the support, and the side, facing the containing space, of the movable die is provided with a first correcting face matched with the split sleeve; the correcting die is located in the containing space, the side, facing the containing space, of the correcting die is provided with a second correcting face matched with the split sleeve, and the second correcting face and the first correcting face are oppositely arranged; the driving device is fixed to the support and connected with the correcting die, and the second correcting face of the correcting die is driven to move in the direction close to or away from the containing space, so that the first correcting face and the second correcting face are close to or away from each other. According to the reinforcing steel bar pre-correcting device, two reinforcing steel bars to be connected can be pre-corrected, the dislocation degree of the two reinforcing steel bars is reduced, the correcting force is large, the centering requirement of a split sleeve is met, a taper sleeve is smoothly installed to lock the split sleeve, the connecting efficiency is improved, the labor intensity of workers is reduced, and the project construction time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar connection, and particularly relates to a steel bar pre-correction device. Background Art

[0002] During the construction process in fields such as nuclear power, in order to facilitate the transportation of steel bars, multiple steel bars are usually connected together at the construction site to lengthen the steel bars. Mechanical connection is a commonly used steel bar connection method, which connects two steel bars through a split sleeve at the connection part by biting and extruding, and conical sleeves respectively locked at both ends of the split sleeve.

[0003] Among them, when the steel bar modules at both ends are butt-jointed, steel bar misalignment is likely to occur. For example, when the upper steel bar module is butt-jointed and installed with the lower fixed-end steel bar module, the longitudinal bars have different degrees of radial misalignment, exceeding the centering requirement of the split sleeve, and the conical sleeve cannot be smoothly installed to lock the split sleeve. It is necessary to remove the binding wire on the steel bar module and use a crowbar for correction and installation. The installation and connection efficiency is low, the labor intensity of workers is high, and the project construction time is long.

[0004] In view of this, there is an urgent need for a steel bar pre-correction device to solve the above problems. Utility Model Content

[0005] In order to solve at least one problem mentioned in the background art, the embodiment of the present application provides a steel bar pre-correction device, which can pre-correct two steel bars to be connected, reduce the misalignment degree between the two, meet the centering requirement of the split sleeve, smoothly install the conical sleeve to lock the split sleeve, improve the connection efficiency, reduce the labor intensity of workers, and shorten the project construction time.

[0006] In order to achieve the above purpose, the embodiment of the present application provides a steel bar pre-correction device, including a bracket, a movable mold, a correction mold and a driving device;

[0007] One end of the movable mold is hinged to the bracket, the other end of the movable mold is detachably connected to the bracket, there is an accommodation space between the middle part of the movable mold and the bracket, and one side of the movable mold facing the accommodation space has a first correction surface matching the split sleeve;

[0008] The correction mold is located in the accommodation space, and one side of the correction mold facing the accommodation space has a second correction surface matching the split sleeve, and the second correction surface is arranged opposite to the first correction surface;

[0009] The driving device is fixed on the bracket, the driving device is connected to the correction mold, and drives the second correction surface of the correction mold to move towards or away from the accommodation space, so that the first correction surface and the second correction surface approach or move away from each other.

[0010] In an implementable embodiment, sliding guide surfaces are provided at two ends of the bracket corresponding to the correction mold. When the driving device drives the correction mold to move, the side surfaces at two ends of the correction mold slide relative to the corresponding sliding guide surfaces on each side.

[0011] In an implementable embodiment, the driving device is installed on a side of the bracket away from the accommodation space. The output end of the driving device passes through the bracket and is connected to a side of the correction mold away from the second correction surface.

[0012] In an implementable embodiment, two opposite mounting ears are provided on a side of the bracket away from the driving device. One mounting ear is hinged to the movable mold through a fixed shaft, and the other mounting ear is detachably connected to the movable mold through a quick insertion shaft;

[0013] A slot for facilitating the movement of the movable mold is provided on the mounting ear hinged to the movable mold;

[0014] The inner side surfaces of the two mounting ears form the sliding guide surfaces.

[0015] In an implementable embodiment, the driving device includes a hydraulic cylinder and a piston rod. The bracket is connected to a side of the hydraulic cylinder where the piston rod is provided, and the piston rod is connected to the correction mold.

[0016] In an implementable embodiment, the hydraulic cylinder includes a cylinder body and a cylinder head. The cylinder head is installed at the port of the cylinder body, and a light hole for the piston rod to enter and exit is provided on the cylinder head. The bracket is connected to the cylinder head, and a joint for connecting a hydraulic oil pipe is provided on a side surface of the cylinder body.

[0017] In an implementable embodiment, the cylinder head is threadedly connected to the cylinder body;

[0018] And / or, a notch is provided at one end of the bracket connecting the cylinder head, and the side surface of the notch is welded or integrally connected to the side surface of the cylinder head.

[0019] In an implementable embodiment, a handle for facilitating operation is provided on one of the side surface and the bottom surface of the cylinder body.

[0020] In an implementable embodiment, the handle includes a holding part and a connecting part connected to each other;

[0021] When the handle is provided on the side surface of the cylinder body, the connecting part is an arc-shaped plate, and the arc-shaped plate is fixedly connected to the side surface of the cylinder body;

[0022] When the handle is arranged on the bottom surface of the oil cylinder body, the connecting part is a flat plate, and the flat plate is fixedly connected to the bottom surface of the oil cylinder body.

[0023] An embodiment of the present application provides a steel bar pre - straightening device, which includes a bracket, a movable die, a straightening die and a driving device. When in use, first, disassemble one end of the detachable connection between the movable die and the bracket, and rotate the movable die to open it; then, install cone sleeves on two steel bars respectively, and relatively buckle the split sleeves at the threaded connection of the two steel bars. Sleeve the steel bar pre - straightening device on the connection of the two steel bars to be straightened, so that the split sleeve on one steel bar corresponds to the first straightening surface, and the split sleeve on the other steel bar corresponds to the second straightening surface; after that, start the driving device to make the straightening die move towards the movable die, the second straightening surface and the first straightening surface approach each other, and then the split sleeves gradually close. When each steel bar is completely attached to the split sleeves on both sides, stop the driving device, and correspondingly sleeve the two cone sleeves at both ends of the split sleeves; finally, start the reverse operation of the driving device to make the straightening die move away from the movable die, the steel bar pre - straightening device resets, disassemble one end of the detachable connection between the movable die and the bracket, rotate the movable die to open it, and remove the steel bar pre - straightening device. Thus, the pre - straightening of the steel bars and the mechanical connection of the steel bars are completed. The embodiment of the present application pre - straightens two steel bars to be connected through the movable die and the straightening die, reduces the misalignment degree between the two, has a large straightening force, meets the centering requirements of the split sleeves, smoothly installs the cone sleeves to lock the split sleeves, improves the connection efficiency, reduces the labor intensity of workers, and shortens the project construction time. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Schematic diagram of the steel bar pre - straightening device provided by the embodiment of the present application;

[0026] Figure 2 Schematic diagram of the open state of the steel bar pre - straightening device provided by the embodiment of the present application;

[0027] Figure 3 Use state diagram of the steel bar pre - straightening device provided by the embodiment of the present application before straightening;

[0028] Figure 4 Use state diagram of the steel bar pre - straightening device provided by the embodiment of the present application after straightening.

[0029] Description of the reference numerals:

[0030] 100 - Steel bar pre - straightening device;

[0031] 110 - Bracket; 111 - Sliding guiding surface; 112 - Pin hole; 113 - Slot hole; 114 - Clear hole; 115 - Accommodating space;

[0032] 120 - Movable die; 121 - First straightening surface; 122 - Fixed shaft; 123 - Quick - insertion shaft;

[0033] 130 - Straightening die; 131 - Second straightening surface;

[0034] 140 - Hydraulic cylinder; 141 - Cylinder body; 142 - Cylinder head; 143 - Piston rod; 144 - Connector;

[0035] 150 - Handle; 151 - Arc - shaped plate; 152 - Flat plate; 153 - Holding part;

[0036] 201 - First steel bar; 202 - Second steel bar; 203 - First split sleeve; 204 - Second split sleeve; 205 - First tapered sleeve; 206 - Second tapered sleeve. Detailed implementation mode

[0037] To make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the accompanying drawings in the embodiments of this application. It should be noted that the embodiments described in the accompanying drawings are only part of the embodiments of this application, not all of them. That is, the embodiments described through the accompanying drawings are exemplary and are intended to explain this application, and should not be construed as a limitation to this application.

[0038] The following will be combined with Figures 1 - 4 to illustrate the steel bar pre - straightening device 100 provided in the embodiments of this application.

[0039] The embodiments of this application provide a steel bar pre - straightening device 100, as Figure 1 and Figure 2 shown, including a bracket 110, a movable die 120, a straightening die 130 and a driving device.

[0040] One end of the movable die 120 is hinged to the bracket 110, the other end of the movable die 120 is detachably connected to the bracket 110, there is an accommodating space 115 between the middle part of the movable die 120 and the bracket 110, and the side of the movable die 120 facing the accommodating space 115 has a first straightening surface 121 matching the outer side surface of the middle part of the split sleeve.

[0041] The correction die 130 is located within the accommodation space 115, and on the side of the correction die 130 facing the accommodation space 115, there is a second correction surface 131 that matches the outer side surface of the middle part of the split sleeve. The second correction surface 131 is disposed opposite to the first correction surface 121.

[0042] The driving device is fixed to the support 110. The driving device is connected to the correction die 130 and drives the second correction surface 131 of the correction die 130 to move in a direction close to or away from the accommodation space 115, so that the first correction surface 121 and the second correction surface 131 approach or move away from each other.

[0043] Among them, the two steel bars to be corrected can be the first steel bar 201 and the second steel bar 202 respectively. It can be understood that the two steel bars can be arranged horizontally as shown in Figure 3 and Figure 4 or arranged longitudinally. The split sleeve can be the first split sleeve 203 and the second split sleeve 204 formed by splitting an entire sleeve in half. Both ends of each split sleeve have conical surfaces that match the tapered sleeves. The corresponding tapered sleeves connecting the two ends of the split sleeve are the first tapered sleeve 205 and the second tapered sleeve 206 respectively.

[0044] It can be understood that, in order to facilitate the installation of the tapered sleeves, the first correction surface 121 of the movable die 120 matches the outer arc surface between the two conical surfaces of the split sleeve. The thickness of the movable die 120, that is, the length in the axial direction of the split sleeve, can be equal to or less than the axial length of the outer arc surface of the middle part of the split sleeve. Similarly, the second correction surface 131 of the correction die 130 matches the outer arc surface between the two conical surfaces of the split sleeve. The thickness of the correction die 130, that is, its length in the axial direction of the split sleeve, is also equal to or less than the axial length of the outer arc surface of the middle part of the split sleeve.

[0045] The movable die 120 can be arch-shaped as shown in Figure 1 and Figure 2 . Its opening can accommodate the entry and exit of the correction die 130, and its first correction surface 121 can be buckled with the second correction surface 131 of the correction die 130 to clamp the first split sleeve 203 and the second split sleeve 204.

[0046] Considering that the degree of misalignment between the two steel bars varies, the support 110 can be provided with an inwardly concave space as shown in Figure 1 and Figure 2 , that is, the space between the following two mounting ears, which together with the space inside the first correction surface 121 of the movable die 120 forms the accommodation space 115.

[0047] The driving device can be pneumatic power, hydraulic power, lead screw and nut power, etc., as long as it can drive the correction die 130 to perform a linear motion close to or away from the movable die 120.

[0048] When the steel bar pre - correction device 100 of the embodiment of the present application is in use, first, disassemble one end of the detachable connection between the movable die 120 and the bracket 110, and rotate the movable die 120 to open it. Then, as Figure 3 shown, the first steel bar 201 and the second steel bar 202 are relatively misaligned. Install the first tapered sleeve 205 on the first steel bar 201, and buckle the first split sleeve 203 at the threaded connection on the upper side of the first steel bar 201. Install the second tapered sleeve 206 on the second steel bar 202, and buckle the second split sleeve 204 at the threaded connection on the lower side of the second steel bar 202, so that the first split sleeve 203 and the second split sleeve 204 are arranged oppositely. Sleeve the steel bar pre - correction device 100 on the connection of the two steel bars to be corrected, so that the first split sleeve 203 on the first steel bar 201 corresponds to the first correction surface 121, and the second split sleeve 204 on the second steel bar 202 corresponds to the second correction surface 131. After that, as Figure 4 shown, start the driving device to make the correction die 130 move towards the direction close to the movable die 120. The second correction surface 131 and the first correction surface 121 approach each other. Then, the first split sleeve 203 and the second split sleeve 204 gradually close. When each steel bar is completely attached to the split sleeves on both sides, stop the driving device, and correspondingly sleeve the two tapered sleeves at both ends of the split sleeves. Finally, start the reverse operation of the driving device to make the correction die 130 move away from the movable die 120, and the steel bar pre - correction device 100 resets. Disassemble one end of the detachable connection between the movable die 120 and the bracket 110, rotate the movable die 120 to open it, and remove the steel bar pre - correction device 100. Thus, the steel bar pre - correction and the mechanical connection of the steel bars are completed.

[0049] In the embodiment of the present application, the movable die 120 and the correction die 130 are used to pre - correct the two steel bars to be connected, reduce the degree of their misalignment, have a large correction force, meet the centering requirements of the split sleeves, smoothly install the tapered sleeves to lock the split sleeves, improve the connection efficiency, reduce the labor intensity of workers, and shorten the project construction time.

[0050] In an implementable embodiment, as Figure 1 and Figure 2 shown, the bracket 110 is provided with sliding guide surfaces 111 corresponding to both ends of the correction die 130. When the driving device drives the correction die 130 to move, the side surfaces at both ends of the correction die 130 slide relative to the corresponding sliding guide surfaces 111 on the corresponding side.

[0051] Among them, the inner side surface of the movable die 120 corresponding to the activity in and out of the correction die 130, that is, both ends of the first correction surface 121, can also be provided with guide surfaces corresponding to the side surfaces at both ends of the correction die 130.

[0052] In this way, during the process that the correction die 130 approaches or moves away from the movable die 120 following the movement of the driving device, the side surfaces at both ends of the correction die 130 can slide relative to the sliding guide surface 111 and the guide surface, preventing the correction die 130 from deflecting and avoiding affecting the centering and fitting effect of the split sleeve.

[0053] In an implementable embodiment, as Figure 1 and Figure 2 shown, the driving device is installed on the side of the bracket 110 away from the accommodating space 115. The output end of the driving device passes through the bracket 110 and is connected to the side of the correction die 130 away from the second correction surface 131.

[0054] In this way, it is avoided that setting the driving device on the side of the accommodating space 115 causes inconvenience in operation, and it is beneficial for maintenance, disassembly and assembly.

[0055] In an implementable embodiment, as Figure 1 and Figure 2 shown, two opposite mounting ears are provided on the side of the bracket 110 away from the driving device. One mounting ear is hinged to the movable die 120 through a fixed shaft 122, and the other mounting ear is detachably connected to the movable die 120 through a quick insertion shaft 123.

[0056] A slot hole 113 facilitating the movement of the movable die 120 is formed in the mounting ear hinged to the movable die 120.

[0057] The inner side surfaces of the two mounting ears form the sliding guide surface 111.

[0058] In this way, as described above, the space of the mounting ear can form the accommodating space 115, increasing the adaptability to the misalignment adjustment of the steel bars to be corrected to different degrees. And the inner surface of the mounting ear can form the sliding guide surface 111 guiding the correction die 130. The setting of the slot hole 113 facilitates the opening of the movable die 120, facilitating the sleeving of the steel bar pre-correction device 100 on the connection part of the two steel bars to be corrected.

[0059] In an implementable embodiment, as Figure 1 and Figure 2 shown, the driving device includes a hydraulic cylinder 140 and a piston rod 143. The bracket 110 is connected to the side of the hydraulic cylinder 140 where the piston rod 143 is provided, and the piston rod 143 is connected to the correction die 130.

[0060] In this way, the correction die 130 is driven hydraulically, with stable stroke and adjustable driving position and pressure.

[0061] In an implementable embodiment, as Figure 1 and Figure 2As shown, the hydraulic cylinder 140 includes a cylinder body 141 and a cylinder head 142. The cylinder head 142 is installed at the port of the cylinder body 141, and the cylinder head 142 is provided with a light hole 114 for the piston rod 143 to enter and exit. The bracket 110 is connected to the cylinder head 142, and a joint 144 for connecting a hydraulic oil pipe is arranged on the side surface of the cylinder body 141.

[0062] In this way, the movement of the piston rod 143 can be stabilized through the cylinder head 142, and the hydraulic cylinder is externally connected through a hydraulic oil pipe, reducing the volume of the entire device.

[0063] In an implementable embodiment, as Figure 1 and Figure 2 shown, the cylinder head 142 is threadedly connected to the cylinder body 141.

[0064] In this way, it is convenient to disassemble the cylinder head 142 from the cylinder body 141, which is beneficial for maintenance.

[0065] In an implementable embodiment, as Figure 1 and Figure 2 shown, one end of the bracket 110 connected to the cylinder head 142 is provided with a notch, and the side surface of the notch is welded or integrally connected to the side surface of the cylinder head 142.

[0066] In this way, the cylinder head 142 and the bracket 110 can be fixedly connected, making the bracket 110 also indirectly serve as a part of the cylinder head 142, with stable connection and also avoiding the maintenance of the connection relationship between multiple components.

[0067] In an implementable embodiment, as Figure 1 and Figure 2 shown, a handle convenient for operation is arranged on one of the side surface and the bottom surface of the cylinder body 141.

[0068] In this way, it is convenient to hold the handle from different directions according to the actual situation for the pre - straightening operation of the steel bar.

[0069] In an implementable embodiment, as Figure 1 shown, the handle includes a holding part 153 and a connecting part connected to each other.

[0070] When the handle is arranged on the side surface of the cylinder body 141, the connecting part is an arc - shaped plate 151, and the arc - shaped plate 151 is fixedly connected to the side surface of the cylinder body 141.

[0071] When the handle is arranged on the bottom surface of the cylinder body 141, the connecting part is a flat plate 152, and the flat plate 152 is fixedly connected to the bottom surface of the cylinder body 141.

[0072] In this way, the handles adapted to the bottom surface and the side surface of the cylinder body 141 are respectively set, which is convenient to replace the handle according to the actual situation.

[0073] It should be noted that, unless otherwise clearly specified or limited, in the description of this application, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] The orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0075] The meaning of the term "plurality" is two or more, unless otherwise specifically and precisely defined.

[0076] The terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described here can include implementations in sequences other than those illustrated or described here.

[0077] The terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A steel bar pre-correction device, characterized in that: It includes a bracket, a movable mold, a correction mold and a driving device; One end of the movable mold is hinged on the bracket, and the other end of the movable mold is detachably connected to the bracket. There is an accommodation space between the middle of the movable mold and the bracket, and the movable mold has a first correction surface matching the split sleeve on one side facing the accommodation space; The correction mold is located in the accommodating space, and the correction mold has a second correction surface matching the split sleeve on one side facing the accommodating space, and the second correction surface is arranged opposite to the first correction surface; The driving device is fixed on the bracket, and is connected to the correction mold to drive the second correction surface of the correction mold to move toward or away from the accommodating space, so that the first correction surface and the second correction surface are closer to or farther away from each other.

2. The steel bar pre-correction device according to claim 1, characterized in that: The bracket is provided with sliding guide surfaces at two ends corresponding to the correction mold. When the driving device drives the correction mold to move, the side surfaces at two ends of the correction mold slide relative to the sliding guide surfaces at the corresponding sides.

3. The steel bar pre-correction device according to claim 2, characterized in that: The driving device is installed on a side of the bracket away from the accommodating space, and an output end of the driving device passes through the bracket and is connected to a side of the correction mold away from the second correction surface.

4. The steel bar pre-correction device according to claim 3, characterized in that: Two opposite mounting ears are arranged on one side of the bracket away from the driving device, one mounting ear is hinged to the movable mold via a fixed shaft, and the other mounting ear is detachably connected to the movable mold via a quick-insertion shaft; The mounting ear hinged to the movable mold is provided with a slot hole for facilitating the movement of the movable mold; The inner side surfaces of the two mounting ears form the sliding guide surface.

5. The steel bar pre-correction device according to claim 3, characterized in that: The driving device comprises a hydraulic cylinder and a piston rod, the bracket is connected to a side of the hydraulic cylinder where the piston rod is arranged, and the piston rod is connected to the correction die.

6. The steel bar pre-correction device according to claim 5, characterized in that: The hydraulic cylinder includes a cylinder body and a cylinder cover. The cylinder cover is installed at the port of the cylinder body and is provided with a light hole for the piston rod to enter and exit. The bracket is connected to the cylinder cover. The side of the cylinder body is provided with a joint for connecting the hydraulic oil pipe.

7. The steel bar pre-correction device according to claim 6, characterized in that: The oil cylinder cover is threadedly connected to the oil cylinder body; And / or, a notch is provided at one end of the bracket connected to the oil cylinder cover, and a side surface of the notch is welded or integrally connected to a side surface of the oil cylinder cover.

8. The steel bar pre-correction device according to claim 6, characterized in that: A handle for easy operation is arranged on one of the side surface and the bottom surface of the oil cylinder body.

9. The steel bar pre-correction device according to claim 8, characterized in that: The handle comprises a gripping portion and a connecting portion connected to each other; When the handle is arranged on the side of the oil cylinder body, the connecting portion is an arc-shaped plate, and the arc-shaped plate is fixedly connected to the side of the oil cylinder body; When the handle is arranged on the bottom surface of the oil cylinder body, the connecting portion is a flat plate, and the flat plate is fixedly connected to the bottom surface of the oil cylinder body.

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