A steel bar bending machine for pre-embedded chute cross bridges

Abstract

The present invention relates to a steel bar bending machine for pre-buried chute cross-bridges, which includes a workbench, a support frame arranged on the workbench for horizontally placing multiple steel bars, a limiting mechanism arranged on the support frame for restricting the upward movement of the multiple steel bars, and a bending mechanism arranged on the support frame for forming the multiple steel bars into a single shape at one time; the limiting mechanism includes a movable plate, a limiting oil cylinder for driving the horizontal movement of the movable plate, and two limiting shafts with one end arranged on the movable plate and the other end capable of extending into the support frame; the bending mechanism includes a movable seat movably arranged in the support frame, a bending oil cylinder arranged at the bottom of the support frame for driving the up-and-down movement of the movable seat, an upper bending shaft arranged on the movable seat and located between the two limiting shafts, and two lower bending shafts arranged on the movable seat and respectively located below the two limiting shafts; the present invention can bend multiple steel bars into a single shape at one time, which not only reduces the labor intensity, but also improves the work efficiency and processing accuracy.

Description

Technical Field

[0001] The present invention relates to the field of steel bar processing equipment, and particularly refers to a steel bar bender for pre-buried chute cross bridges. Background Art

[0002] In modern society, due to the continuous progress of technology, in order to meet the needs of improving people's living standards and the development of cities, most cities apply rail transit to relieve the pressure on public transportation in the city. In order to meet the use of underground light rails, tunnel segments are required to support the inner and outer walls of the tunnel.

[0003] After the shield tunneling of the segments is completed, various facilities such as subway tracks, cables, fire protection, evacuation platforms, and lighting need to be installed in the completed subway tunnel. The traditional installation method is to use an impact drill to drill holes in the segments to install brackets. This method will cause many damage points on the segments, with serious water leakage and rusting phenomena, causing certain damage to the main structure, affecting the safety and durability of the main structure, and making it difficult to reinforce and add tunnel facilities later.

[0004] In the past two years, domestic designers have started to design and pre-bury steel chutes in shield tunnel segments. This technology forms a strengthened overall linear structure within the segment layer, with uniform stress, which is conducive to precise installation and adjustment, completely overcomes the defects of the temporary drilling method, and is also conducive to the reserved process requirements of tunnel mechanized construction, greatly improving the convenience and safety of tunnel facility installation.

[0005] At present, when pre-burying chutes in the steel bar skeletons of shield tunnel segments, it is required that there is a specified spacing between the distribution bars in the steel bar skeletons and the pre-buried chutes; to meet this requirement, the distribution bars and pre-buried chutes in the existing steel bar skeletons both adopt a cross-bridge method, and the distribution bars in the steel bar skeletons need to be bent; however, the existing steel bar benders can only perform single actions and cannot complete three consecutive bending actions, which is not only time-consuming and laborious, but also has low processing accuracy. Moreover, the existing steel bar benders can only bend one or two steel bars at a time, resulting in low work efficiency. Summary of the Invention

[0006] The purpose of the present invention is to provide a steel bar bender for pre-buried chute cross bridges to overcome the deficiencies of the prior art.

[0007] To achieve the above object, the technical solution adopted by the present invention is: a steel bar bending machine for pre-buried chute cross-bridges, comprising a workbench, a support frame arranged on the workbench for horizontally placing multiple steel bars, a limiting mechanism arranged on the support frame for restricting the upward movement of the multiple steel bars, and a bending mechanism arranged on the support frame for cooperating with the limiting mechanism to form the multiple steel bars into a single shape at one time; the limiting mechanism includes a limiting support arranged on the workbench and behind the support frame, a movable plate movably arranged in the limiting support, a limiting oil cylinder arranged on the limiting support for driving the movable plate to move in the vertical direction of the steel bar, and two limiting shafts with one end arranged on the movable plate and the other end capable of extending into the support frame; the bending mechanism includes a movable seat movably arranged in the support frame, a bending oil cylinder arranged at the bottom of the support frame for driving the movable seat to move up and down, an upper bending shaft arranged on the movable seat and between the two limiting shafts, and two lower bending shafts arranged on the movable seat and respectively below the two limiting shafts.

[0008] Preferably, the support frame includes two front support plates and two rear support plates arranged in parallel on the workbench, end connecting plates respectively arranged between the two ends of the front support plate and the rear support plate, and a bottom plate horizontally arranged at the bottoms of the front support plate and the rear support plate for installing the bending oil cylinder; the tops of the two end connecting plates are flush and lower than the two limiting shafts.

[0009] Preferably, two positioning holes corresponding to the positions of the two limiting shafts are arranged on the front support plate; two through holes corresponding to the positions of the two limiting shafts are arranged on the rear support plate; the lengths of the two limiting shafts are greater than the distance between the front support plate and the rear support plate.

[0010] Preferably, vertical guide grooves are arranged on both the front support plate and the rear support plate; both ends of the upper bending shaft respectively extend into the guide grooves of the front support plate and the rear support plate.

[0011] Preferably, the movable seat includes a base horizontally placed and connected to the driving end of the bending oil cylinder, and connecting plates respectively arranged on both sides of the base; both connecting plates are in an inverted T shape, and convex portions are arranged in the middle of the tops; both ends of the upper bending shaft respectively pass through the convex portions of the two connecting plates and extend into the guide grooves.

[0012] Preferably, sleeve bushes are sleeved on the limiting shafts, the upper bending shaft and the lower bending shafts.

[0013] Preferably, a positioning plate for quickly positioning multiple steel bars is further arranged at one end of the support frame on the workbench.

[0014] Preferably, the positioning plate is in an L shape, and two long strip holes are arranged on its horizontal end along the length direction of the steel bar; two bolts respectively passing through the long strip holes and threadedly connected to the workbench are further arranged on the horizontal end of the positioning plate.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0016] By means of the cooperation of two limiting shafts with the upper bending shaft and two lower bending shafts respectively, the present invention can bend multiple steel bars into shape at one time, which not only reduces the labor intensity, but also greatly improves the work efficiency and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the present invention will be further described below with reference to the drawings:

[0018] Attached Figure 1 is a schematic structural view of the steel bar bending machine for pre-buried chute cross-over of the present invention;

[0019] Attached Figure 2 is a schematic structural view of the present invention after removing the workbench;

[0020] Attached Figure 3 is for this Figure 2 cross-sectional view;

[0021] Attached Figure 4 is for Figure 3 working schematic diagram

[0022] Attached Figure 5 is a schematic structural view of the bending mechanism in the present invention;

[0023] Attached Figure 6 is a schematic structural view of the positioning plate in the present invention.

[0024] Wherein: 1, workbench; 2, support frame; 21, front support plate; 22, rear support plate; 23, end connection plate; 24, bottom plate; 25, positioning hole; 26, through hole; 27, guide groove; 3, limiting mechanism; 31, limiting bracket; 32, limiting oil cylinder; 33, movable plate; 34, limiting shaft; 4, bending mechanism; 41, movable seat; 411, base; 412, connection plate; 413, protruding part; 42, bending oil cylinder; 43, upper bending shaft; 44, lower bending shaft; 5, positioning plate; 51, long hole; 6, bushing; 7, steel bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0026] Attached Figure 1-6The steel bar bending machine for pre-embedded chute cross-bridges according to the present invention includes a workbench 1, a support frame 2 arranged on the workbench 1 for horizontally placing six steel bars 7, a limiting mechanism 3 arranged on the support frame 2 for restricting the upward movement of the six steel bars 7, and a bending mechanism 4 arranged on the support frame 2 for cooperating with the limiting mechanism 3 to form the six steel bars 7 into a single shape at one time; the limiting mechanism 3 includes a limiting bracket 31 arranged on the workbench 1 and behind the support frame 2, a movable plate 33 movably arranged in the limiting bracket 31, a limiting oil cylinder 32 arranged on the limiting bracket 31 for driving the movable plate 33 to move along the vertical direction of the steel bar 7, and two limiting shafts 34 with one end arranged on the movable plate 33 and the other end capable of extending into the support frame 2; the bending mechanism 4 includes a movable seat 41 movably arranged in the support frame 2, a bending oil cylinder 42 arranged at the bottom of the support frame 2 for driving the movable seat 41 to move up and down, an upper bending shaft 43 arranged on the movable seat 41 and between the two limiting shafts 34, and two lower bending shafts 44 arranged on the movable seat 41 and respectively below the two limiting shafts 34; in the non-working state: the limiting oil cylinder 32 drives the movable plate 33 to drive the two limiting shafts 34 to retract, so that the two limiting shafts 34 are located in the limiting bracket 31, and the bending oil cylinder 42 drives the movable seat 41 to drive the upper bending shaft 43 and the two lower bending shafts 44 to the lowest position; during work: the staff horizontally places the six steel bars 7 on the support frame 2, and then the staff starts the machine. First, the limiting oil cylinder 32 drives the movable plate 33 to drive the two limiting shafts 34 to extend into the support frame 2, and two of the limiting shafts 34 are located above the six steel bars 7. Then, the bending oil cylinder 42 drives the movable seat 41 to drive the upper bending shaft 43 and the two lower bending shafts 44 to move upward, cooperate with the two limiting shafts 34, and bend the six steel bars 7 into a single shape at one time, which not only reduces the labor intensity, but also greatly improves the work efficiency and processing accuracy. Finally, the limiting oil cylinder 32 and the bending oil cylinder 42 return to the initial position, the staff removes the bent steel bars 7, and then re-places the steel bars 7 to be bent, and works in turn. The width of the six steel bars 7 is approximately equal to the width of the palm, which is convenient for the staff to take.

[0027] Further, the support frame 2 includes two front support plates 21 and two rear support plates 22 arranged in parallel on the workbench 1, end connection plates 23 respectively arranged between the two ends of the front support plates 21 and the rear support plates 22, and a bottom plate 24 horizontally arranged at the bottoms of the front support plates 21 and the rear support plates 22 for installing the bending oil cylinder 42; the tops of the two end connection plates 23 are flush and lower than the two limiting shafts 34; during work: the six steel bars 7 are horizontally placed on the tops of the two end connection plates 23, which play a supporting role and are convenient for subsequent bending.

[0028] Further, two positioning holes 25 corresponding to the positions of the two limiting shafts 34 are provided on the front support plate 21; two through holes 26 corresponding to the positions of the two limiting shafts 34 are provided on the rear support plate 22; the lengths of the two limiting shafts 34 are greater than the distance between the front support plate 21 and the rear support plate 22; during operation: the limiting oil cylinder 32 drives the movable plate 33 to drive the two limiting shafts 34 to pass through the through holes 26 and extend into the positioning holes 25, and the positioning holes 25 can effectively prevent the two limiting shafts 34 from bending during the bending process, further improving the processing accuracy.

[0029] Further, vertical guide grooves 27 are provided on both the front support plate 21 and the rear support plate 22; both ends of the upper bending shaft 43 extend into the guide grooves 27 of the front support plate 21 and the rear support plate 22 respectively; during operation: the guide grooves 27 can play a guiding role to prevent the bending shaft and the movable seat 41 from shifting during the bending process, further improving the processing accuracy.

[0030] Further, the movable seat 41 includes a base 411 placed horizontally and connected to the driving end of the bending oil cylinder 42, and connecting plates 412 respectively provided on both sides of the base 411; both of the two connecting plates 412 are in an inverted T shape, and a convex portion 413 is provided in the middle of the top; both ends of the upper bending shaft 43 pass through the convex portions 413 of the two connecting plates 412 and extend into the guide grooves 27; during operation: by setting the two connecting plates 412 in an inverted T shape, it is convenient for the upper bending shaft 43 to extend between the two limiting shafts 34 to bend the steel bar 7.

[0031] Further, shaft sleeves 6 are sleeved on the limiting shafts 34, the upper bending shaft 43 and the lower bending shaft 44; during operation: by providing the shaft sleeves 6, the wear of the limiting shafts 34, the upper bending shaft 43 and the lower bending shaft 44 during the bending process can be reduced, the service life can be improved, and by changing the diameter of the shaft sleeves 6, the hook angle of the steel bar 7 can also be adjusted, making it more flexible to use.

[0032] Further, a positioning plate 5 is further provided at one end of the support frame 2 on the workbench 1; during operation: the six steel bars 7 can be quickly positioned through the positioning plate 5, further improving the work efficiency.

[0033] Further, the positioning plate 5 is in an L shape, and two long strip holes 51 placed along the length direction of the steel bar 7 are provided on its horizontal end; two bolts respectively passing through the long strip holes 51 and threadedly connected to the workbench 1 are further provided on the horizontal end of the positioning plate 5; during operation: by loosening the two bolts, the position of the positioning plate 5 can be adjusted, so that the bending position of the steel bar 7 can be adjusted, making it more flexible to use.

[0034] The above are only specific application examples of the present invention and do not constitute any limitation to the protection scope of the present invention. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the present invention's rights protection.

Claims

1. A steel bar bending machine for an embedded chute cross-over, characterized in that: It includes a workbench, a support frame arranged on the workbench for horizontally placing multiple steel bars, a limiting mechanism arranged on the support frame for restricting the upward movement of the multiple steel bars, and a bending mechanism arranged on the support frame for cooperating with the limiting mechanism to form the multiple steel bars in one step; the limiting mechanism includes a limiting bracket arranged on the workbench and behind the support frame, a movable plate movably arranged in the limiting bracket, a limiting oil cylinder arranged on the limiting bracket for driving the movable plate to move in the vertical direction of the steel bar, and two limiting shafts with one end arranged on the movable plate and the other end capable of extending into the support frame; the bending mechanism includes a movable seat movably arranged in the support frame, a bending oil cylinder arranged at the bottom of the support frame for driving the movable seat to move up and down, an upper bending shaft arranged on the movable seat and between the two limiting shafts, and two lower bending shafts arranged on the movable seat and respectively below the two limiting shafts.

2. The steel bar bending machine for the embedded chute bridge crossing according to claim 1, wherein: The support frame includes two front support plates and two rear support plates arranged in parallel on the workbench, end connecting plates respectively arranged between the two ends of the front support plates and the rear support plates, and a bottom plate horizontally arranged at the bottoms of the front support plates and the rear support plates for installing the bending oil cylinder; the tops of the two end connecting plates are flush and lower than the two limiting shafts.

3. The steel bar bending machine for pre-buried chute cross-over according to claim 2, wherein: Two positioning holes corresponding to the positions of the two limiting shafts are arranged on the front support plate; two through holes corresponding to the positions of the two limiting shafts are arranged on the rear support plate; the lengths of the two limiting shafts are greater than the distance between the front support plate and the rear support plate.

4. The steel bar hook bending machine for pre-buried chute cross-over according to claim 3, characterized in that: Vertical guide grooves are arranged on both the front support plate and the rear support plate; both ends of the upper bending shaft extend into the guide grooves of the front support plate and the rear support plate respectively.

5. The steel bar bending machine for the embedded chute bridge crossing according to claim 4, characterized in that: The movable seat includes a base horizontally placed and connected to the driving end of the bending oil cylinder, and connecting plates respectively arranged on both sides of the base; both of the two connecting plates are in an inverted T shape, and convex portions are arranged in the middle of the tops; both ends of the upper bending shaft respectively pass through the convex portions of the two connecting plates and extend into the guide grooves.

6. The steel bar bending machine for pre-buried chute cross bridge according to any one of claims 1-5, characterized in that: Sleeve bushes are sleeved on both the limiting shafts, the upper bending shaft and the lower bending shafts.

7. The steel bar bending machine for pre-buried chute cross-over according to claim 6, characterized in that: A positioning plate for quickly positioning multiple steel bars is further arranged at one end of the support frame on the workbench.

8. The steel bar bending machine for pre-buried chute cross-over according to claim 7, characterized in that: The positioning plate is in an L shape, and two long strip holes are arranged on its horizontal end along the length direction of the steel bar; two bolts respectively passing through the long strip holes and threadedly connected to the workbench are further arranged on the horizontal end of the positioning plate.

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