A device for straightening steel bars at the head of a cast-in-place pile

Abstract

The invention discloses a straightening device for the head of a bored pile, which relates to the field of construction equipment. The technical solution is as follows: the device comprises a walking mechanism sleeved on the upper part of the head of the bored pile, a lifting mechanism fixedly arranged on the walking mechanism, and a shaping mechanism for shaping the head of the pile steel bars arranged on the lifting mechanism; the walking mechanism comprises two parallel mounting plates, the two mounting plates are fixedly connected by two fixing columns, two rollers are rotatably arranged at both ends of each fixing column, the outer surface of the roller is in contact with the outer surface of the bored pile, the middle part of one side of the two mounting plates is rotatably connected by a rotating shaft, a sprocket is coaxially fixedly arranged at both ends of the rotating shaft, a chain is meshed on each sprocket, and the chain bypasses the head of the bored pile. The beneficial effects of the invention are as follows: the invention has a simple structure, can conveniently straighten the head of the pile steel bars, improves the construction efficiency, has a high degree of mechanization, and greatly saves manpower.

Description

[0001] This case is a divisional application. The title of the invention of the original application is: A pile head steel bar shaping equipment. The application date of the original application is: 2022-03-15, and the application number of the original application is: CN202210255903.9. Technical Field

[0002] The invention relates to the field of building construction equipment, and in particular to a steel bar straightening device for a cast-in-place pile head. Background Art

[0003] When pouring cast-in-place piles, the top elevation of the pile should be 0.8~1.0m higher than the designed top elevation to ensure the strength of the pile head concrete. However, the pile head part that is higher than the designed top elevation must be chiseled off during the subsequent construction process. Manual chiseling is usually used in the chiseling process, which often causes the pile body reinforcement to bend.

[0004] At present, the more commonly used methods for steel bar shaping are: 1. Homemade "F" shaped wrench shaping method, 2. Hydraulic shaping bender shaping method, 3. Oxygen and acetylene baking shaping method.

[0005] When a single steel bar at the pile head has multiple bends, the homemade "F"-shaped wrench and hydraulic shaping bender cannot complete the shaping work alone, and the use of oxygen and acetylene baking will affect the performance of the steel bar. Whether using hydraulic shaping or "F"-shaped wrench shaping, a lot of manpower is required in the shaping process, and manual shaping is slow and inefficient. Summary of the invention

[0006] In view of the above technical problems, the present invention provides a cast-in-place pile head steel bar straightening device.

[0007] The technical solution is as follows: it comprises a walking mechanism sleeved on the upper part of the cast-in-place pile head, a lifting mechanism is fixedly arranged on the walking mechanism, and a shaping mechanism for shaping the pile head steel bars is arranged on the lifting mechanism;

[0008] The walking mechanism comprises two parallel mounting plates, the two mounting plates are fixedly connected by two fixing columns, two rollers are rotatably arranged at the two ends of each fixing column, the outer surface of the roller is in contact with the outer surface of the cast-in-place pile, the middle part of one side of the two mounting plates is rotatably connected by a rotating shaft, a sprocket is coaxially fixedly arranged at the two ends of the rotating shaft, a chain is respectively engaged with each sprocket, and the chain passes around the pile head of the cast-in-place pile;

[0009] It also includes a travel motor fixedly arranged on one of the mounting plates, wherein the motor shaft of the travel motor is coaxially fixedly connected with the rotating shaft.

[0010] Preferably, the lifting mechanism comprises a guide rail fixedly arranged on the mounting plate, a screw rod is rotatably arranged in the middle of the guide rail, the axis of the screw rod is parallel to the axis of the cast-in-place pile, a slider is threadedly connected to the screw rod, the slider is slidably connected to the guide rail, and a shaping mechanism is fixedly arranged on one side of the cast-in-place pile on the slider;

[0011] It also includes a driving motor fixedly arranged at the upper end of the guide rail, and the motor shaft of the driving motor is coaxially fixedly connected with the lead screw.

[0012] Preferably, the shaping mechanism comprises a "V"-shaped bracket fixedly connected to the slider, the closed end of the bracket is fixedly connected to the slider, and the two ends of the open end of the bracket are respectively provided with a slide groove, and an adjustment rod is slidably connected in each of the slide grooves, and a protrusion is fixedly provided at one end of the adjustment rod away from the slider;

[0013] A shaping unit is fixedly arranged at one end of each protrusion away from the adjusting rod, and two shaping units are arranged opposite to each other.

[0014] Preferably, the two adjusting rods are slidably connected via a connecting rod, a locking unit is arranged in the connecting rod, and the locking unit is movably connected to the two adjusting rods respectively;

[0015] It also includes an electric push rod fixedly arranged in the middle of the bracket, the fixed end of the electric push rod is fixedly connected to the bracket, and the movable end of the electric push rod is fixedly provided with an insert block, and the insert block is slidably connected to the middle of the connecting rod.

[0016] Preferably, the locking unit comprises two L-shaped locking hooks arranged opposite to each other, the middle part of the fixing part of the locking hook is rotatably connected to the connecting rod, the clamping parts of the locking hook are respectively facing the protrusions, a locking groove is provided on one side of the protrusion, the clamping part is movably connected to the locking groove, and a sliding column is provided at one end of the fixing part of the locking hook away from the clamping part;

[0017] It also includes a spring arranged between the fixing portion of the locking hook and the connecting rod, and the spring is located on a side close to the clamping portion.

[0018] Preferably, guide grooves are respectively provided on both sides of the insert block, the guide grooves correspond to the sliding posts, a through groove is provided in the middle of the insert block, a guide post is provided in the middle of the connecting rod, and the guide post slides in the through groove.

[0019] Preferably, the shaping unit includes a mounting frame fixedly arranged on the boss, two shaping wheels are rotatably arranged on the mounting frame, the axes of the two shaping wheels are respectively perpendicular to the axes of the screw rod, and an arc-shaped groove is respectively provided on the outer surface of each shaping wheel.

[0020] Preferably, a plurality of anti-slip teeth are arranged in an array on the surface of the groove.

[0021] Preferably, a sensor is fixedly arranged in the middle of the upper surface of the mounting plate, the sensing end of the sensor faces the pile head reinforcement, and the sensor and the travel motor form an electric control loop.

[0022] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention are: the present invention has a simple structure, can conveniently straighten the pile head steel bars, improves the construction efficiency, has a high degree of mechanization, and greatly saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the use status of an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0025] Figure 3 Schematic diagram of a shaping mechanism according to an embodiment of the present invention.

[0026] Figure 4 4 is a cross-sectional view of a shaping mechanism according to an embodiment of the present invention.

[0027] Figure 5 for Figure 4 An enlarged schematic diagram of part A.

[0028] Figure 6 Schematic diagram of a shaping unit according to an embodiment of the present invention.

[0029] The accompanying drawings are marked as follows: 1. walking mechanism; 1-1. mounting plate; 1-2. fixing column; 1-3. roller; 1-4. rotating shaft; 1-5. sprocket; 1-6. chain; 1-7. walking motor; 2. lifting mechanism; 2-1. guide rail; 2-2. screw rod; 2-3. slider; 2-4. driving motor; 3. shaping mechanism; 3-1. bracket; 3-2. adjusting rod; 3-3. bump; 3-31. locking groove; 3-4, shaping unit; 3-41, mounting frame; 3-42, shaping wheel; 3-43, groove; 3-5, connecting rod; 3-51, guide column; 3-6, locking unit; 3-61, locking hook; 3-62, holding part; 3-63, sliding column; 3-64, spring; 3-7, electric push rod; 3-8, plug block; 3-81, guide groove; 3-82, through groove; 100, cast-in-place pile; 101, pile head reinforcement. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0034] Example 1

[0035] See also Figures 1 to 6 The present invention provides a cast-in-place pile head steel bar straightening device, comprising a walking mechanism 1 sleeved on the upper part of the cast-in-place pile head 100, a lifting mechanism 2 fixedly arranged on the walking mechanism 1, and a shaping mechanism 3 for shaping the pile head steel bar 101 arranged on the lifting mechanism 2;

[0036] The walking mechanism 1 includes two parallel mounting plates 1-1, the two mounting plates 1-1 are fixedly connected by two fixing columns 1-2, two rollers 3-421-3 are rotatably arranged at the two ends of each fixing column 1-2, the outer surface of the roller 3-421-3 is in contact with the outer surface of the cast-in-place pile 100, the middle part of one side of the two mounting plates 1-1 is rotatably connected by a rotating shaft 1-4, a sprocket 1-5 is coaxially fixedly arranged at the two ends of the rotating shaft 1-4, and a chain 1-6 is respectively engaged on each sprocket 1-5 , the chain 1-6 bypasses the pile head of the bored pile 100; since the diameters of the bored piles 100 used in different construction sites are different, the length of the chain 1-6 is increased or decreased according to the diameter of the bored pile 100, so that the chain 1-6 can be wound around the outside of the bored pile, thereby improving the use range of the device. By setting two rows of chains 1-6, the stability of the walking mechanism 1 when walking on the outside of the bored pile 100 can be improved, and the stability of the overall structure of the device can also be increased when the shaping mechanism 3 is shaping the steel bars.

[0037] The walking mechanism 1 also includes a travel motor 1-7 fixedly arranged on one of the mounting plates 1-1, and the motor shaft of the travel motor 1-7 is coaxially fixedly connected with the rotating shaft 1-4. When the travel motor 1-7 is started, the rotating shaft 1-4 is driven to rotate, and the two sprocket wheels 1-5 are driven to rotate, so that the walking mechanism 1 can move along the outer surface of the cast-in-place pile 100, and drive the shaping mechanism 3 to shape different pile head steel bars 101.

[0038] The lifting mechanism 2 includes a guide rail 2-1 fixedly arranged on the mounting plate 1-1, a screw rod 2-2 is rotatably arranged in the middle of the guide rail 2-1, the axis of the screw rod 2-2 is parallel to the axis of the cast-in-place pile 100, a slider 2-3 is threadedly connected to the screw rod 2-2, the slider 2-3 is slidably connected to the guide rail 2-1, and a shaping mechanism 3 is fixedly arranged on the slider 2-3 toward one side of the cast-in-place pile 100;

[0039] It also includes a driving motor 2-4 fixedly arranged at the upper end of the guide rail 2-1, and the motor shaft of the driving motor 2-4 is coaxially fixedly connected with the screw rod 2-2.

[0040] When the shaping mechanism 3 shapes the pile head steel bar 101, the lifting mechanism 2 is started, and the driving motor 2-4 drives the shaping mechanism 3 to move back and forth, thereby realizing the shaping of the steel bar.

[0041] The shaping mechanism 3 includes a "V"-shaped bracket 3-1 fixedly connected to the slider 2-3, the closed end of the bracket 3-1 is fixedly connected to the slider 2-3, and the two ends of the open end of the bracket 3-1 are respectively provided with a slide groove, and an adjustment rod 3-2 is slidably connected in each slide groove, and a protrusion 3-3 is fixedly provided at the end of the adjustment rod 3-2 away from the slider 2-3;

[0042] A shaping unit 3-4 is fixedly disposed at one end of each protrusion 3-3 away from the adjusting rod 3-2, and two shaping units 3-4 are disposed opposite to each other.

[0043] The two adjusting rods 3-2 are slidably connected via a connecting rod 3-5, a locking unit 3-6 is arranged inside the connecting rod 3-5, and the locking unit 3-6 is movably connected to the two adjusting rods 3-2 respectively;

[0044] It also includes an electric push rod 3-7 fixedly arranged in the middle of the bracket 3-1, the fixed end of the electric push rod 3-7 is fixedly connected to the bracket 3-1, and the movable end of the electric push rod 3-7 is fixedly provided with an insert block 3-8, and the insert block 3-8 is slidably connected to the middle of the connecting rod 3-5.

[0045] The locking unit 3-6 includes two L-shaped locking hooks 3-61 arranged opposite to each other, the middle part of the fixing part of the locking hook 3-61 is rotatably connected with the connecting rod 3-5, the clamping part 3-62 of the locking hook 3-61 faces the protrusion 3-3 respectively, a locking groove 3-31 is provided on one side of the protrusion 3-3, the clamping part 3-62 is movably connected with the locking groove 3-31, and a sliding column 3-63 is provided at one end of the fixing part of the locking hook 3-61 away from the clamping part 3-62;

[0046] It also includes a spring 3-64 arranged between the fixing portion of the locking hook 3-61 and the connecting rod 3-5, and the spring 3-64 is located on a side close to the clamping portion 3-62.

[0047] After the two shaping units 3-4 are sleeved on the outside of the pile head steel bar 101, the locking unit 3-6 locks the two protrusions 3-3 to prevent the positions of the two shaping units 3-4 from shifting during the steel bar shaping process, resulting in poor steel bar shaping effect.

[0048] Guide grooves 3-81 are respectively provided on both sides of the insert block 3-8, and the guide grooves 3-81 correspond to the sliding column 3-63. A through groove 3-82 is provided in the middle of the insert block 3-8, and a guide column 3-51 is provided in the middle of the connecting rod 3-5, and the guide column 3-51 slides in the through groove 3-82.

[0049] After the walking mechanism 1 reaches the position where the steel bar needs to be shaped, the lifting mechanism 2 drives the shaping mechanism 3 to move to the lower part of the guide rail 2-1. Because the deformation of the pile head steel bar 101 mostly occurs in the middle and upper part of the steel bar, the lower part always remains in a vertical state. At this time, the electric push rod 3-7 is started, pushing the plug block 3-8 to move to one side of the connecting rod 3-5. At this time, the guide column 3-51 is against one end of the through groove 3-82, and the plug block 3-8 pushes the connecting rod 3-5 to move to one side of the pile head steel bar 101. Under the action of the connecting rod 3-5, the two adjusting rods 3-2 approach each other in the process of moving toward the pile head steel bar 101 until the two shaping units 3-4 can clamp the pile head steel bar 101. At this time, the two locking hooks 3-61 of the locking unit 3-6 can respectively lock and fix the positions of the two adjusting rods 3-2;

[0050] The driving motor 2-4 is started, driving the screw rod 2-2 to rotate, so that the shaping mechanism 3 can move to the upper part of the pile head steel bar 101, and the shaping of the pile head steel bar 101 is realized through the two shaping units 3-4. When the lifting mechanism 2 drives the shaping mechanism 3 to move upward, the shaping mechanism 3 can apply an upward pulling force to the pile head steel bar 101, which is convenient for the shaping of the pile head steel bar 101.

[0051] When the electric push rod 3-7 contracts, the electric push rod 3-7 drives the plug block 3-8 to move toward the fixed end of the electric push rod 3-7. At this time, the plug block 3-8 drives the sliding column 3-63 to move toward the fixed end of the electric push rod 3-7 through the guide groove 3-81. At this time, the spring 3-64 is compressed, and the clamping part 3-62 is disengaged from the locking groove 3-31. At this time, the locking unit 3-6 is disengaged from the two protrusions 3-3 respectively. As the electric push rod 3-7 moves, the guide column 3-51 and one end of the through groove 3-82 contact each other, and the plug block 3-8 drives the connecting rod 3-5 to move toward the side close to the bracket 3-1. Under the action of the connecting rod 3-5, the adjusting rod 3-2 moves to the side away from each other, and drives the two shaping units 3-4 to move in the direction away from the pile head steel bar 101, so as to avoid the shaping mechanism 3 from hindering the movement of the walking mechanism 1 when the walking mechanism 1 is working.

[0052] The shaping unit 3-4 includes a mounting frame 3-41 fixedly mounted on the boss, two shaping wheels 3-42 are rotatably mounted on the mounting frame 3-41, the axes of the two shaping wheels 3-42 are respectively perpendicular to the axis of the screw rod 2-2, and arc-shaped grooves 3-43 are respectively provided on the outer surface of each shaping wheel 3-42. The grooves 3-43 can keep the pile head steel bar 101 always in the middle of the two shaping wheels 3-42, and through the cooperation of the two shaping units 3-4, the steel bars in the two shaping units 3-4 are squeezed and shaped.

[0053] The surface array of the groove 3-43 is provided with a number of anti-slip teeth.

[0054] A sensor is fixedly arranged in the middle of the upper surface of the mounting plate 1-1, with the sensing end of the sensor facing the pile head steel bar 101, so that the sensor and the travel motor 1-7 form an electric control loop.

[0055] When the present invention is used, the device is placed on the upper end of the bored pile 100, the two chains 1-6 respectively bypass the bored pile 100, and the chains 1-6 are fixed at the head and tail, and the walking mechanism 1 is started to make the shaping mechanism 3 close to one of the pile head steel bars 101, and the electric push rod 3-7 is started to drive the two shaping units 3-4 to move toward the pile head steel bar 101, so that the shaping wheels 3-42 of the two shaping units 3-4 are in contact with the vertical part of the lower part of the pile head steel bar 101, and the locking mechanism 3-6 locks and fixes the positions of the two shaping units 3-4, and the lifting mechanism 2 is started to drive the shaping mechanism 3 to move toward the upper end of the pile head steel bar 101, and the shaping of the bent part of the pile head steel bar 101 is realized during the movement of the shaping mechanism 3.

[0056] After the shaping of a single steel bar is completed, the electric push rod 3-7 contracts, driving the shaping unit 3-4 to reset, and at the same time the lifting mechanism 2 drives the shaping mechanism 3 to move to the lower part of the guide rail 2-1, and the walking mechanism 1 starts to shape the next pile head steel bar 101 until the shaping of all the pile head steel bars 101 is completed.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cast-in-place pile head steel bar straightening device, characterized in that: It comprises a walking mechanism (1) sleeved on the upper part of the pile head of a cast-in-place pile (100), a lifting mechanism (2) fixedly arranged on the walking mechanism (1), and a shaping mechanism (3) for shaping the pile head steel bars (101) arranged on the lifting mechanism (2); The walking mechanism (1) comprises two parallel mounting plates (1-1), the two mounting plates (1-1) are fixedly connected via two fixing columns (1-2), two rollers (1-3) are rotatably arranged at the two ends of each fixing column (1-2), the outer surface of the roller (1-3) is in contact with the outer surface of the cast-in-place pile (100), the middle part of one side of the two mounting plates (1-1) is rotatably connected via a rotating shaft (1-4), a sprocket (1-5) is coaxially fixedly arranged at the two ends of the rotating shaft (1-4), each sprocket (1-5) is meshed with a chain (1-6), and the chain (1-6) passes around the pile head of the cast-in-place pile (100); It also includes a travel motor (1-7) fixedly mounted on one of the mounting plates (1-1), wherein the motor shaft of the travel motor (1-7) is coaxially fixedly connected to the rotating shaft (1-4); The lifting mechanism (2) comprises a guide rail (2-1) fixedly arranged on the mounting plate (1-1), a screw rod (2-2) rotatably arranged in the middle of the guide rail (2-1), the axis of the screw rod (2-2) being parallel to the axis of the cast-in-place pile (100), a slider (2-3) being threadedly connected to the screw rod (2-2), the slider (2-3) being slidably connected to the guide rail (2-1), and a shaping mechanism (3) being fixedly arranged on one side of the slider (2-3) facing the cast-in-place pile (100); It also includes a drive motor (2-4) fixedly arranged on the upper end of the guide rail (2-1), wherein the motor shaft of the drive motor (2-4) is coaxially fixedly connected to the lead screw (2-2); The shaping mechanism (3) comprises a "V"-shaped bracket (3-1) fixedly connected to the slider (2-3); the closed end of the bracket (3-1) is fixedly connected to the slider (2-3); the two ends of the open end of the bracket (3-1) are respectively provided with a slide groove; an adjustment rod (3-2) is slidably connected in each of the slide grooves; a protrusion (3-3) is fixedly provided at one end of the adjustment rod (3-2) away from the slider (2-3); A shaping unit (3-4) is fixedly arranged at one end of each of the protrusions (3-3) away from the adjusting rod (3-2), and two of the shaping units (3-4) are arranged opposite to each other; The two adjusting rods (3-2) are slidably connected via a connecting rod (3-5), a locking unit (3-6) is arranged inside the connecting rod (3-5), and the locking unit (3-6) is movably connected to the two adjusting rods (3-2) respectively; It also includes an electric push rod (3-7) fixedly arranged in the middle of the bracket (3-1), the fixed end of the electric push rod (3-7) is fixedly connected to the bracket (3-1), and the movable end of the electric push rod (3-7) is fixedly arranged with an insert block (3-8), and the insert block (3-8) is slidably connected to the middle of the connecting rod (3-5); The locking unit (3-6) comprises two L-shaped locking hooks (3-61) arranged opposite to each other, the middle part of the fixing part of the locking hook (3-61) is rotatably connected to the connecting rod (3-5), the clamping part (3-62) of the locking hook (3-61) faces the protrusion (3-3) respectively, a locking groove (3-31) is provided on one side of the protrusion (3-3), the clamping part (3-62) is movably connected to the locking groove (3-31), and a sliding column (3-63) is provided at one end of the fixing part of the locking hook (3-61) away from the clamping part (3-62); It also includes a spring (3-64) arranged between the fixing portion of the locking hook (3-61) and the connecting rod (3-5), wherein the spring (3-64) is located on a side close to the clamping portion (3-62); Guide grooves (3-81) are respectively provided on both sides of the insert block (3-8), the guide grooves (3-81) correspond to the sliding posts (3-63), a through groove (3-82) is provided in the middle of the insert block (3-8), a guide post (3-51) is provided in the middle of the connecting rod (3-5), and the guide post (3-51) slides in the through groove (3-82).

2. The cast-in-place pile head steel bar straightening device according to claim 1, characterized in that: The shaping unit (3-4) comprises a mounting frame (3-41) fixedly mounted on the protrusion (3-3); two shaping wheels (3-42) are rotatably mounted on the mounting frame (3-41); the axes of the two shaping wheels (3-42) are respectively perpendicular to the axis of the screw rod (2-2); and the outer surface of each shaping wheel (3-42) is provided with an arc-shaped groove (3-43).

3. The cast-in-place pile head steel bar straightening device according to claim 2, characterized in that: A plurality of anti-slip teeth are arranged in an array on the surface of the groove (3-43).

4. The cast-in-place pile head steel bar straightening device according to claim 1, characterized in that: A sensor is fixedly arranged in the middle of the upper surface of the mounting plate (1-1), the sensing end of the sensor faces the pile head steel bar (101), and the sensor and the travel motor (1-7) form an electric control circuit.

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