Hydraulic batch accurate pre-bending device

Abstract

The invention relates to a hydraulic batch accurate pre-bending device. The device comprises a base, a pre-bending length adjusting plate fixed on the base, a pair of stand columns, a pair of reinforcing steel bar fixing stand columns and a jack connected with an electric oil pump station. A jacking plate is arranged at the tops of the pair of stand columns and is vertically connected with the jack; the bottom of the jack is vertically connected with a pre-bending pressing plate; a pre-bending limiting switch is arranged on the side face of one stand column and connected with a pre-bending limiting switch adjusting fixator. The pre-bending limit switch adjusting fixer is connected with a pre-bending angle control plate; a reinforcing steel bar fixing pressing beam transversely penetrates between the pair of reinforcing steel bar fixing stand columns, and reinforcing steel bar fixing adjusting pressing plates are arranged at the tops of the two ends of the reinforcing steel bar fixing pressing beam; a material distribution groove is formed in the base, and a pre-bending length adjusting plate is arranged in front of the material distribution groove; a pre-bent steel bar is arranged between the material distribution groove and the steel bar fixing pressing beam, and a temporary supporting pad is arranged at the bottom end of the front portion of the pre-bent steel bar. The method has the characteristics of high flexibility, high efficiency, high repeated utilization rate and good safety.

Description

Technical Field

[0001] The invention relates to the field of reinforcement construction technical assistance, and in particular to a hydraulic batch precise pre-bending device. Background Art

[0002] In recent years, with the rapid development of construction projects and the continuous innovation of construction technology, construction quality has received increasing attention. Rebar engineering is a key component, and therefore, quality control needs to be strengthened to better ensure project quality. Due to the varying types of rebar and splicing methods used on construction sites, current conventional rebar pre-bending methods or devices have difficulty controlling the pre-bend length and angle, making it impossible to ensure that the two sections of rebar are aligned after welding. However, according to the "Rebar Welding and Acceptance Regulations," the centerlines of welded rebar must be aligned. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a hydraulic batch precise pre-bending device with high flexibility, low cost, high efficiency, simple and easy operation, high reusability and good safety.

[0004] In order to solve the above problems, the present invention provides a hydraulic batch precise pre-bending device, which is characterized in that: the device includes a base, a pre-bending length adjustment plate fixed on the base, a pair of columns and a pair of steel bar fixing columns and a jack connected to the electric oil pump station; a pair of the columns are symmetrically and vertically installed on one side of the base, and a pair of the steel bar fixing columns are symmetrically and vertically installed on the other side; the tops of the pair of columns are provided with top supporting plates perpendicular to each other, and the top supporting plates are vertically connected to the tops of the jacks; the bottoms of the jacks are vertically connected to the pre-bending pressure plates; a pre-bending limit switch is provided on the side of one of the columns, and the pre-bending limit switch is connected to the pre-bending limit switch. Bending limit switch adjustment fixture; the pre-bending limit switch adjustment fixture is connected to a pre-bending angle control plate, which is connected to the base through a high-strength return spring; a pre-bending scale is provided on the side of the base between a pair of the columns; a steel bar fixed pressure beam is passed across a pair of the steel bar fixed columns, and steel bar fixed adjustment pressure plates are provided on the top of both ends of the steel bar fixed pressure beam; a feeding trough is provided on the base, and the pre-bending length adjustment plate is provided in front of the feeding trough; pre-bending steel bars are provided between the feeding trough and the steel bar fixed pressure beam, and a temporary support is provided every 1 to 2 meters at the front bottom end of the pre-bending steel bar, and the pre-bending pressure plate is provided above the rear end of the steel bar.

[0005] The pre-bending length adjustment plate is fixed on the base according to the pre-bending length. The pre-bending length adjustment plate calculates the length to be pre-bent according to the pre-bending steel bar model and welding method, adjusts the front and rear positions and is fixed on the base.

[0006] The upright column is connected to the top supporting plate through a stiffening plate.

[0007] The pre-bend length adjustment plate, the pre-bend pressure plate, and the material distribution trough are all provided with notches with the same cross-sectional style as the steel bars. The opening of the notch is 1mm~2mm larger than the model diameter of the pre-bend steel bars. A small notch is opened in the middle of the notch to ensure that the longitudinal ribs of the steel bars are within the notch.

[0008] The oil nozzle of the jack is connected to the oil nozzle of the electric oil pump station through a hydraulic oil pipe.

[0009] The jack is one of a vertical manual hydraulic jack, a separate manual hydraulic jack and a separate electric hydraulic jack.

[0010] When the jack is a vertical manual hydraulic jack or a separate manual hydraulic jack, a group of oil return springs are symmetrically provided between the top supporting plate and the pre-bent pressure plate.

[0011] The pre-bending limit switch adjustment fixture consists of a fixing card, an adjusting bolt, and a switch adjustment fixture base; the pre-bending limit switch is tightened and fixed with a screw on one side of the fixing card, and the side with the nut is inserted into the hexagonal bolt hole of the adjusting bolt as the top; the rotating big head end of the adjusting bolt is welded to the switch adjustment fixture base and fixed to the column; the side of the fixing card is fixedly connected to the pre-bending limit switch by a screw, and a pre-bending limit switch ball is provided on the top of the pre-bending limit switch.

[0012] The pre-bending angle control plate is arranged above the base between a pair of the columns.

[0013] The height of the temporary support is consistent with the height of the notch of the pre-bending length adjustment plate and the notch of the material distribution trough, and they are on the same horizontal plane.

[0014] Compared with the prior art, the present invention has the following advantages: 1. In the present invention, the length of the steel bars to be pre-bent is adjusted by the pre-bending length adjusting plate. At the same time, the material distribution notch can unify the axis of the longitudinal ribs of the steel bars. Therefore, it can be applied to the precise batch pre-bending of various types of steel bars. During pre-bending, the length of the weld can be guaranteed, and the center line can be guaranteed to be consistent, which can better guarantee the quality of the project.

[0015] 2. In the present invention, the desired pre-bending angle can be accurately pre-bent through the control of the pre-bending limit switch and the hydraulic pre-bending system. Therefore, the pre-bending processing accuracy is high, the batch pre-bending speed is fast, the operation is simple and easy to use, the use is flexible and the work efficiency is high.

[0016] 3. In the present invention, the length of the steel bars that need to be pre-bent is adjusted by the pre-bending length adjustment plate. Therefore, it is applicable to the pre-bending of the same steel bars with different welding methods. According to the lap method and length required in the "Rebar Welding and Acceptance Regulations", the pre-bending limit and pre-bending positioning can be adjusted to complete batch high-precision production.

[0017] 4. The present invention can pre-bend different types of steel bars by using different pre-bending length adjustment plates, material distribution slots and steel bar fixing adjustment pressure plates, and can be used for building construction and civil engineering. Therefore, the reuse rate is high and the safety is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 It is the overall structural diagram of the present invention.

[0020] Figure 2 It is a structural diagram of the pre-bending part of the present invention.

[0021] Figure 3 It is a front view of the pre-bent part of the present invention.

[0022] Figure 4 It is a side view of the pre-bent portion of the present invention.

[0023] Figure 5 It is a structural diagram of the limit switch of the present invention.

[0024] Figure 6 This is a structural diagram of the electric oil pump of the present invention.

[0025] In the figure: 1—base; 2—pre-bending length adjustment plate; 3—pre-bending pressure plate; 4—jack; 41—electric oil pump station; 5—return oil spring; 6—top support plate; 7—column; 8—material distribution trough; 9—rebar fixing pressure beam; 10—rebar fixing column; 11—rebar fixing adjustment pressure plate; 12—pre-bending limit switch; 121—pre-bending limit switch ball; 13—pre-bending scale; 14—pre-bending angle control panel; 15—high-strength return spring; 16—pre-bending limit switch adjustment fixture; 161—fixing card; 162—adjusting bolt; 163—switch adjustment fixture base; 17—temporary support; 18—pre-bending steel bar; 19—stiffening plate. DETAILED DESCRIPTION

[0026] like Figures 1 to 6 As shown, a hydraulic batch precision pre-bending device includes a base 1, a pre-bending length adjustment plate 2 fixed on the base 1, a pair of columns 7 and a pair of steel bar fixing columns 10, and a jack 4 connected to an electric oil pump station 41.

[0027] A pair of columns 7 are symmetrically and vertically mounted on one side of the base 1, and a pair of steel bar fixing columns 10 are symmetrically and vertically mounted on the other side. A top support plate 6 perpendicular to each other is provided on the top of the pair of columns 7, and the top support plate 6 is vertically connected to the top of the jack 4. A pre-bending pressure plate 3 is vertically connected to the bottom of the jack 4. A pre-bending limit switch 12 is provided on the side of one column 7. The pre-bending limit switch 12 is connected to a pre-bending limit switch adjustment fixture 16, and the pre-bending limit switch 12 is used to adjust the fixed adjustment height of the pre-bending limit switch adjustment fixture 16. The pre-bending limit switch adjustment fixture 16 is connected to a pre-bending angle control plate 14, which is connected to the base 1 via a high-strength return spring 15 to ensure that after the pre-bending is completed, it returns to the bottom height of the next steel bar pre-bending. A pre-bend scale 13 is installed on the side of the base 1 between a pair of columns 7. A rebar fixing pressure beam 9 runs across a pair of rebar fixing columns 10. Rebar fixing adjustment plates 11 are installed at the tops of both ends of the rebar fixing pressure beam 9 to adjust and hold the pre-bent rebar 18. A material distribution trough 8 is installed on the base 1. A pre-bend length adjustment plate 2 is installed in front of the material distribution trough 8 (i.e., between the material distribution trough 8 and the hydraulic system). Pre-bent rebar 18 is installed between the distribution trough 8 and the rebar fixing pressure beam 9. Temporary pads 17 are installed every 1-2 meters at the front bottom of the pre-bent rebar 18, and a pre-bend pressure plate 3 is installed above the rear end of the rebar (i.e., the pre-bent end of the rebar).

[0028] Among them: the pre-bending length adjustment plate 2 is fixed on the base 1 according to the pre-bending length. The pre-bending length adjustment plate 2 calculates the length to be pre-bent according to the pre-bending steel bar model and welding method, adjusts the front and rear position and is fixed on the base 1.

[0029] The upright column 7 is connected to the top supporting plate 6 via a stiffening plate 19 .

[0030] The pre-bent length adjustment plate 2, the pre-bent pressure plate 3, and the feeding trough 8 are all provided with notches with the same cross-sectional style as the steel bars. The opening of the notch is 1mm~2mm larger than the diameter of the pre-bent steel bar 18. A small notch is opened in the middle of the notch to ensure that the longitudinal ribs of the steel bars are in the notch, which effectively ensures that the longitudinal ribs of the steel bars are aligned with the longitudinal ribs during welding, making welding convenient and beautiful.

[0031] The oil nozzle of the jack 4 is connected to the oil nozzle of the electric oil pump station 41 through a hydraulic oil pipe.

[0032] The jack 4 is a vertical manual hydraulic jack, a split manual hydraulic jack, or a split electric hydraulic jack. The top of the jack 4, the top support plate 6, and the bottom pre-bent plate 3 can all be welded or flanged. They are available at any hydraulic equipment store.

[0033] When the jack 4 is a vertical manual hydraulic jack or a split manual hydraulic jack, a set of oil return springs 5 ​​are symmetrically provided between the top support plate 6 and the pre-bent pressure plate 3. When a split electric hydraulic jack is used, the oil return springs 5 ​​may not be installed. The present invention uses a split electric hydraulic jack, and the installation position is the same.

[0034] The pre-bend limit switch adjustment fixture 16 consists of a fixing clip 161, an adjustment bolt 162, and a switch adjustment fixture base 163. One side of the fixing clip 161 screws the pre-bend limit switch 12 in place, with the nut on the side fitting into the hexagon socket of the adjustment bolt 162. The adjusting bolt 162 rotates until its larger end is welded to the switch adjustment fixture base 163 and secured to the column 7. The height of the pre-bend limit switch 12 can be adjusted by tightening the adjustment bolt 162 with an hexagonal wrench. The side of the fixing clip 161 is screwed to the pre-bend limit switch 12, and a pre-bend limit switch ball 121 is located on the top of the pre-bend limit switch 12.

[0035] The pre-bending angle control plate 14 is disposed above the base 1 between a pair of columns 7 .

[0036] The height of the temporary support 17 is consistent with the height of the notch of the pre-bending length adjustment plate 2 and the notch of the material distribution trough 8, and is on the same horizontal plane. During the pre-pressing process, the pre-bending axis and angle of the steel bar can be guaranteed to be consistent, thereby ensuring the pre-bending accuracy of the steel bar.

[0037] In the present invention, the base 1, pre-bending length adjustment plate 2, pre-bending pressure plate 3, feeding trough 8, and pre-bending angle control plate 14 are made of steel plates processed and manufactured according to the drawings. They must have a certain rigidity and flatness, and then are welded as a whole according to the dimensions of the design drawings, or can be connected with split high-strength bolts.

[0038] The pre-bend length adjustment plate 2, pre-bend pressure plate 3, and material distribution trough 8 are made of steel plates with a thickness of not less than 3 cm to ensure their strength and resistance to deformation. The base 1 is made of steel plates with a thickness of 1 cm to 2 cm, and the pre-bend angle control plate 14 is made of steel plates with a thickness of 5 mm.

[0039] The top supporting plate 6, column 7, steel bar fixing column 10, and steel bar fixing adjusting pressure plate 11 can be processed and manufactured with high-strength steel materials such as steel plate, channel steel, square steel, I-beam, etc. They must have a certain rigidity and flatness, and then be assembled according to the design drawings by integral welding or split high-strength bolt connection.

[0040] The pre-bend length adjustment plate 2 calculates the length to be pre-bent according to the model and welding method of the pre-bend steel bar 18, and then adjusts the front and rear positions and is fixed on the base 1.

[0041] The steel bar fixing pressure beam 9 fixes the required pre-bent steel bars 18 in the material distribution trough 8 through the steel bar fixing column 10 and the steel bar fixing adjustment pressure plate 11, thereby ensuring that the pre-bent angles of the same batch of steel bars are consistent.

[0042] The height of the pre-bending limit switch 12 is adjusted according to the model and pre-bending angle of the pre-bending steel bar 18 to be pre-bent based on the side pre-bending scale 13, and is fixed with the pre-bending limit switch adjusting fixture 16.

[0043] The working process is as follows: ① According to the model and welding method of the pre-bent steel bar 18, calculate the length L to be pre-bent, measure the pre-bent length L from the notch end of the pre-bent pressure plate 3, and mark it.

[0044] ② Adjust the pre-bend length adjustment plate 2 so that it is placed at the marked position and fixed on the base 1.

[0045] ③ Adjust the height of the temporary support 17, the notch of the pre-bending length adjustment plate 2 and the feeding trough 8 to the same height and on the same horizontal plane to ensure the accuracy of the pre-bending of the steel bars.

[0046] ④ After determining the pre-bending length, put the pre-bent steel bar 18 so that its longitudinal ribs are in the small notches of the pre-bending length adjustment plate 2 and the small notches of the feeding trough 8, effectively ensuring that the longitudinal ribs of the steel bars are aligned with the longitudinal ribs during welding.

[0047] ⑤ The steel bar fixing pressure beam 9 fixes the pre-bent steel bar 18 in the material distribution trough 8 through the steel bar fixing column 10 and the steel bar fixing adjustment pressure plate 11 to prevent the middle part from arching during the pre-bending process, thereby ensuring that the pre-bending angle of the same batch of steel bars is consistent.

[0048] ⑥ After the steel bars are placed and fixed, the pre-bending limit switch 12 adjusts the height of the pre-bending steel bar model and pre-bending angle according to the model and pre-bending angle of the pre-bending steel bar 18, and the pre-bending limit switch is used to adjust the fixture 16 for fixation.

[0049] ⑦ The jack 4 is connected to the electric oil pump station (41) with a hydraulic oil pipe, and then the electric oil pump station 41 is started to perform pre-bending. When the pre-bending angle control board 14 contacts the pre-bending limit switch ball 121, the power is cut off, the electric oil pump station 41 stops working, and the pre-bending stops.

[0050] ⑧ The jack 4 relieves the high-strength return spring 15 and returns the pre-bend angle control plate 14 to a position flush with the bottom of the notch of the pre-bend length adjustment plate 2.

[0051] ⑨ Remove the pre-bent steel bars 18 and re-place the steel bars to carry out the next batch of pre-bending work.

Claims

1. A hydraulic batch precision pre-bending device, characterized by: The device comprises a base (1), a pre-bending length adjustment plate (2) fixed on the base (1), a pair of columns (7), a pair of steel bar fixing columns (10), and a jack (4) connected to an electric oil pump station (41); a pair of columns (7) are symmetrically and vertically installed on one side of the base (1), and a pair of steel bar fixing columns (10) are symmetrically and vertically installed on the other side; a top support plate (6) perpendicular to each other is provided on the top of the pair of columns (7), and the top support plate (6) is vertically connected to the top of the jack (4); a pre-bending pressure plate (3) is vertically connected to the bottom of the jack (4); a pre-bending limit switch (12) is provided on the side of one of the columns (7), and the pre-bending limit switch (12) is connected to a pre-bending limit switch adjustment fixture (16); the pre-bending limit switch adjustment fixture (16) is connected to the A pre-bending angle control plate (14) is provided, and the pre-bending angle control plate (14) is connected to the base (1) via a high-strength return spring (15); a pre-bending scale (13) is provided on the side of the base (1) between a pair of the columns (7); a steel bar fixed pressure beam (9) is passed across between a pair of the steel bar fixed columns (10), and steel bar fixed adjustment pressure plates (11) are provided on the tops of both ends of the steel bar fixed pressure beam (9); a material distribution trough (8) is provided on the base (1), and the pre-bending length adjustment plate (2) is provided in front of the material distribution trough (8) (between the material distribution trough (8) and the hydraulic system); a pre-bending steel bar (18) is provided between the material distribution trough (8) and the steel bar fixed pressure beam (9), and a temporary support (17) is provided every 1 to 2 meters at the front bottom end of the pre-bending steel bar (18), and the pre-bending pressure plate (3) is provided above the rear end of the steel bar.

2. A hydraulic batch precision pre-bending device according to claim 1, characterized in that: The pre-bend length adjustment plate (2) is fixed on the base (1) according to the pre-bend length. The pre-bend length adjustment plate (2) calculates the length to be pre-bent according to the pre-bend steel bar model and welding method, adjusts the front and rear positions, and is fixed on the base (1).

3. A hydraulic batch precision pre-bending device according to claim 1, characterized in that: The upright column (7) is connected to the top supporting plate (6) via a stiffening plate (19).

4. A hydraulic batch precision pre-bending device according to claim 1, characterized in that: The pre-bend length adjustment plate (2), the pre-bend pressure plate (3), and the material distribution trough (8) are all provided with a notch having the same cross-sectional pattern as the steel bar. The opening of the notch is 1 mm to 2 mm larger than the diameter of the pre-bend steel bar (18). A small notch is provided in the middle of the notch to allow the longitudinal rib of the steel bar to fit within the notch.

5. The hydraulic batch precise pre-bending device according to claim 1, characterized in that: The oil nozzle of the jack (4) is connected to the oil nozzle of the electric oil pump station (41) through a hydraulic oil pipe.

6. The hydraulic batch precise pre-bending device according to claim 1, characterized in that: The jack (4) is one of a vertical manual hydraulic jack, a separate manual hydraulic jack and a separate electric hydraulic jack.

7. A hydraulic batch precision pre-bending device according to claim 6, characterized in that: When the jack (4) is a vertical manual hydraulic jack or a separated manual hydraulic jack, a group of oil return springs (5) are symmetrically provided between the top supporting plate (6) and the pre-bent pressing plate (3).

8. The hydraulic batch precision pre-bending device according to claim 1, characterized in that: The pre-bending limit switch adjustment fixture (16) is composed of a fixing card (161), an adjusting bolt (162), and a switch adjustment fixture base (163); one side of the fixing card (161) is screwed to fix the pre-bending limit switch (12), and the side with a nut is inserted into the hexagonal bolt hole of the adjusting bolt (162) as the top; the adjusting bolt (162) is rotated and the large end is welded to the switch adjustment fixture base (163) and fixed on the column (7); the side of the fixing card (161) is fixedly connected to the pre-bending limit switch (12) by screws, and the top of the pre-bending limit switch (12) is provided with a pre-bending limit switch ball (121).

9. The hydraulic batch precision pre-bending device according to claim 1, characterized in that: The pre-bending angle control plate (14) is arranged above the base (1) between a pair of upright posts (7).

10. The hydraulic batch precision pre-bending device according to claim 1, characterized in that: The height of the temporary support pad (17) is consistent with the height of the notch of the pre-bending length adjustment plate (2) and the notch of the material distribution groove (8), and they are located on the same horizontal plane.

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