A progressive wall formwork removal device

Abstract

The present invention discloses a progressive wall building formwork demolition device, which relates to the technical field of building formwork. It includes a main pipe, at least one connecting pipe is threadedly connected to the bottom of the main pipe, a lever head is rotatably connected to the top of the main pipe, a gear is rotatably connected to one side of the main pipe close to the lever head, the lever head is engaged with the gear, a push rod is slidably connected in the main pipe, and a guide frame for pushing and pulling the gear to rotate forward and backward is slidably connected to one side of the main pipe close to the gear. When holding this device of the present invention, when it is suitable for demolishing with a flat lever, by jolting downwards, the bottom end of the sliding rod impacts any external fixed object beside the constructor, and it can be switched to a flat lever with a large angle. When it is suitable for demolishing with a hooked lever, by pressing the clamping frame with the thumb, it can be switched to a hooked lever with a small angle. The operation is simple and convenient. In this way, there is no need to frequently flip both ends for switching, reducing the physical burden.

Description

Technical Field

[0001] The present invention relates to the technical field of building formwork, and in particular to a progressive wall building formwork removal device. Background Art

[0002] In order to efficiently and safely remove building formwork from the wall, it is necessary to use formwork removal tools to gradually separate the formwork, reducing damage to the wall and the formwork itself.

[0003] Existing formwork removal tools are usually designed as crowbars with different characteristics at both ends. A steel bar is used, and the two ends are bent into crowbar heads with different angles for formwork removal. The end with a large angle is a flat crowbar, usually used in cases where a large lever force is required, and it is easier to wedge into narrow or hard-to-reach spaces, such as the gap between the formwork and concrete, the joint between floor bricks, etc., enabling workers to complete the disassembly task more easily; the end with a small angle is a hooked crowbar, which is more suitable for fine adjustment or working in a more confined space, providing higher precision and control. For example, by hooking the edge or hole of the formwork, or locally pulling out the protruding structures of the formwork (such as bolts, positioning pins), in cases where the surrounding structures or materials that do not need to be removed are not damaged during the removal process. In addition, to meet different formwork removal requirements, such tools are made in various lengths for use when removing formwork at higher positions.

[0004] However, in the construction site environment, due to the complex and changeable scenarios, longer poles are extremely inconvenient during rotation and operation, prone to interference with other erected poles, and frequently rotating and switching the two ends of the crowbar not only affects work efficiency but also places a greater burden on the physical strength of construction workers. Summary of the Invention

[0005] In order to overcome the technical drawbacks of existing crowbars, the present invention provides a progressive wall building formwork removal device.

[0006] A progressive wall building formwork removal device includes a main pipe. At least one connecting pipe is threadedly connected to the bottom of the main pipe. A crowbar head is rotatably connected to the top of the main pipe. A gear is rotatably connected to one side of the main pipe near the crowbar head. The crowbar head meshes with the gear. A push rod is slidably connected inside the main pipe. A guide frame for pushing and pulling the gear to rotate forward and backward is slidably connected to one side of the main pipe near the gear. One end of the push rod contacts the guide frame. A spring is fixedly connected between the main pipe and the guide frame. A sliding rod is slidably connected inside the connecting pipe. The other end of the push rod contacts the adjacent sliding rod. The sliding rod is fixedly connected with clamping blocks symmetrically distributed along the sliding rod. A clamping frame is slidably connected to the connecting pipe. One side of the clamping frame near the adjacent clamping blocks is provided as an inclined surface. The inclined surface of the clamping frame is in extrusion fit with the adjacent clamping blocks. A tension spring is fixedly connected between the clamping frame and the adjacent connecting pipe.

[0007] Optionally, an external thread groove is formed in the upper part of the connecting pipe, and an internal thread groove is formed in the lower part of the connecting pipe.

[0008] Optionally, an activity groove is formed on one side of the guide frame close to the gear, and the guide frame is movably connected to the eccentric position of the gear through the activity groove.

[0009] Optionally, it further includes a clamping rod, the clamping rod is rotatably connected to the lever head, a stop block is fixedly connected to the lever head, the stop block contacts the top of the clamping rod, and torsion springs symmetrically distributed along the clamping rod are fixedly connected between the clamping rod and the lever head.

[0010] Optionally, it further includes a push frame, the push frame is sleeved outside the main pipe, the push frame contacts the bottom of the clamping rod, and the push frame is fixed on the main pipe through a nut.

[0011] Optionally, a reinforcing cylinder is fixedly connected to the push rod near the connection between the main pipe and the connecting pipe and to the sliding rod near the connection between two adjacent connecting pipes.

[0012] Optionally, the reinforcing cylinder is provided with helical grooves distributed circumferentially.

[0013] Optionally, smooth inner walls of holding cylinders are sleeved outside both the main pipe and the connecting pipe.

[0014] Optionally, it further includes clamping plates symmetrically distributed along the holding cylinder, the clamping plates are rotatably connected to the adjacent holding cylinder, the clamping plates are provided with rough clamping surfaces, and the holding cylinder is provided with limiters symmetrically distributed along the adjacent clamping plates for fixing the adjacent clamping plates.

[0015] Optionally, it further includes a clamping cylinder, and the clamping cylinder is threadedly connected to the bottom of the connecting pipe at the bottom.

[0016] The beneficial effects are as follows: When holding this device, when it is suitable for removing the flat lever, by jolting downwards, the bottom end of the sliding rod impacts any external fixed object beside the constructor, and then it can be switched to a flat lever with a large angle. When it is suitable for removing the hooked lever, by pressing the clamping frame with the thumb, it can be switched to a hooked lever with a small angle. The operation is simple and convenient. In this way, there is no need to frequently flip both ends for switching, reducing the physical burden.

[0017] After the present invention pries open the formwork with a flat lever at a large angle, it can immediately be switched to a hooked lever at a small angle. In this way, progressive angle removal is realized, and with the rotational force of the lever head, the formwork can be removed more easily, saving worry and effort.

[0018] In the hooked lever mode of the present invention, a claw-shaped lever is formed by the clamping rod cooperating with the lever head. In this way, when clamping the convex structures (such as bolts, positioning pins) of the formwork, or hooking the edge or hole of the formwork, it is more convenient to apply force for removal.

[0019] By providing a reinforcing cylinder, the present invention can increase the strength at the connection between the main pipe and the connecting pipe and the connection between adjacent connecting pipes, prevent the connection from breaking, and by hollowing out a spiral groove in the reinforcing cylinder, the weight of the reinforcing cylinder is reduced, making the device easier to hold.

[0020] By providing a grip cylinder, the present invention increases the friction of hand-holding and improves the comfort of hand-holding, facilitating the firm grip of the device, and by rotating the clamping plate upward, the position of the grip cylinder can be adjusted up and down.

[0021] By screwing a short clamping cylinder onto the bottom of the lowermost connecting pipe, the present invention can fix the device in a flat and warped rod mode, and by screwing a long clamping cylinder onto the bottom of the lowermost connecting pipe, the present invention can fix the device in a hooked and warped rod mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0023] Figure 2 is a three-dimensional structural schematic diagram of components such as the main pipe, connecting pipe, and warping rod head of the present invention.

[0024] Figure 3 is a three-dimensional structural schematic diagram of components such as the gear, push rod, and spring of the present invention.

[0025] Figure 4 is a three-dimensional structural schematic diagram of components such as the sliding rod, clamping frame, and tension spring of the present invention.

[0026] Figure 5 is a three-dimensional structural schematic diagram of components such as the clamping rod, push frame, and nut of the present invention.

[0027] Figure 6 is a three-dimensional structural schematic diagram of components such as the clamping rod, torsion spring, and push frame of the present invention.

[0028] Figure 7 is a three-dimensional structural schematic diagram of components such as the push rod, sliding rod, and reinforcing cylinder of the present invention.

[0029] Figure 8 is a three-dimensional structural schematic diagram of the reinforcing cylinder of the present invention.

[0030] Figure 9 is a three-dimensional structural schematic diagram of components such as the main pipe, connecting pipe, grip cylinder, and clamping plate of the present invention.

[0031] Figure 10 is a three-dimensional structural schematic diagram of components such as the grip cylinder, clamping plate, and stopper of the present invention.

[0032] Figure 11 is a three-dimensional structural schematic diagram of components such as the connecting pipe, sliding rod, and clamping cylinder of the present invention.

[0033] The markings of each component in the attached drawings are as follows: 1 - main pipe, 2 - connecting pipe, 3 - lever head, 4 - gear, 5 - push rod, 501 - guiding frame, 6 - spring, 7 - sliding rod, 701 - clamping block, 8 - clamping frame, 9 - tension spring, 10 - clamping rod, 101 - stop block, 11 - torsion spring, 12 - pushing frame, 13 - nut, 14 - reinforcing cylinder, 141 - spiral groove, 15 - holding cylinder, 16 - clamping plate, 17 - limiter, 18 - clamping cylinder. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside and outside that appear or will appear in the text of the present invention are only based on the attached drawings of the present invention, and they do not specifically limit the present invention.

[0035] Embodiment 1: A progressive wall formwork removal device, as Figures 1 - 4 shown, includes a main pipe 1 and a connecting pipe 2. The upper part of the connecting pipe 2 is provided with an external thread groove, and the main pipe 1 is connected to the external thread groove of the connecting pipe 2. The lower part of the connecting pipe 2 is provided with an internal thread groove. By spirally connecting the internal thread of the previous connecting pipe 2 with the external thread of the next connecting pipe 2, a plurality of connecting pipes 2 can be connected to the bottom of the connecting pipe 2 to extend the overall length of the device. The top of the main pipe 1 is rotatably connected with a lever head 3. The upper side inside the main pipe 1 is rotatably connected with a gear 4. The lever head 3 meshes with the gear 4. A push rod 5 is slidably connected inside the main pipe 1 in the vertical direction. A guiding frame 501 is slidably connected to the upper side of the main pipe 1 in the vertical direction. The upper end of the push rod 5 contacts the guiding frame 501. An activity groove is opened on the upper side of the guiding frame 501. The guiding frame 501 is movably connected to the eccentric position of the gear 4 through the activity groove. The up and down movement of the guiding frame 501 can push and pull the gear 4 to rotate forward and backward. A spring 6 is fixedly connected between the main pipe 1 and the guiding frame 501. A sliding rod 7 is slidably connected inside the connecting pipe 2 in the vertical direction. The lower end of the push rod 5 contacts the adjacent sliding rod 7. Clamping blocks 701 are fixedly connected to the sliding rod 7 and are symmetrically distributed in the front and back directions along the sliding rod 7. A clamping frame 8 is slidably connected to the connecting pipe 2 in the left and right directions. One side of the clamping frame 8 close to the adjacent clamping block 701 is provided with an inclined surface. The inclined surface of the clamping frame 8 is in extrusion fit with the adjacent clamping block 701. A tension spring 9 is fixedly connected between the clamping frame 8 and the adjacent connecting pipe 2.

[0036] Each connecting pipe 2 and the components inside and outside it form a connecting assembly. At the bottom of the connecting pipe 2, several new connecting assemblies can be screwed on through progressive downward threading to achieve the effect of progressively extending the length of the device. During the process of removing the wall formwork, if a flat lever with a large angle is needed, when holding the device, give a downward pause so that the bottom end of the sliding rod 7 hits any external fixed object beside the constructor, thereby causing the sliding rod 7 to slide upward. The sliding rod 7 pushes the push rod 5 upward, the push rod 5 pushes the guiding frame 501 upward, the spring 6 is compressed, the guiding frame 501 pushes the gear 4 to rotate counterclockwise, thereby driving the lever head 3 to rotate clockwise. In this way, the angle between the lever head 3 and the main pipe 1 is increased; and during the process of pushing the sliding rod 7 upward, the sliding rod 7 drives the clamping block 701 to move upward, the clamping block 701 presses the inclined surface of the clamping frame 8, causing the clamping frame 8 to slide towards the side where the tension spring 9 is stretched. When the clamping block 701 disengages from the inclined surface of the clamping frame 8, the tension spring 9 resets and drives the clamping frame 8 to slide back to its original position. At this time, the clamping frame 8 clamps the clamping block 701, making the sliding rod 7 unable to slide downward, thereby fixing the lever head 3 at the adjusted position.

[0037] If a hooked lever with a small angle is needed, press the clamping frame 8 with the thumb, causing the clamping frame 8 to slide towards the side where the tension spring 9 is stretched again, thereby releasing the limit of the clamping frame 8 on the clamping block 701. The spring 6 resets and drives the push rod 5 and the guiding frame 501 to slide downward, the push rod 5 drives the sliding rod 7 to slide downward and reset, and the guiding frame 501 pulls the gear 4 to reverse and reset, thereby driving the lever head 3 to rotate counterclockwise. In this way, the angle between the lever head 3 and the main pipe 1 is decreased.

[0038] In summary, when holding this device of the present invention, when it is suitable for removing with a flat lever, by giving a downward pause, the bottom end of the sliding rod 7 hits any external fixed object beside the constructor, and it can be switched to a flat lever with a large angle. When it is suitable for removing with a hooked lever, by pressing the clamping frame 8 with the thumb, it can be switched to a hooked lever with a small angle. The operation is simple and convenient. In this way, there is no need to frequently flip both ends for switching, reducing the physical burden.

[0039] In addition, after the present invention first pries open the formwork with a flat lever with a large angle, it can immediately be switched to a hooked lever with a small angle. In this way, progressive angle removal is achieved, and with the rotational force of the lever head 3, the formwork can be removed more easily, saving worry and effort.

[0040] Embodiment 2: On the basis of Embodiment 1, as Figure 5 and Figure 6As shown in the figure, it further includes a clamping rod 10. The clamping rod 10 is rotatably connected to the warping rod head 3. A stop block 101 is fixedly connected to the warping rod head 3. The stop block 101 contacts the top of the clamping rod 10. A torsion spring 11 symmetrically distributed along the front and back of the clamping rod 10 is fixedly connected between the clamping rod 10 and the warping rod head 3. A push frame 12 is sleeved outside the main pipe 1. The push frame 12 contacts the bottom of the clamping rod 10. The push frame 12 is fixed on the main pipe 1 through a nut 13.

[0041] In the hooked warping rod mode, a claw - type warping rod is formed by the cooperation of the clamping rod 10 and the warping rod head 3. In this way, when clamping the convex structures (such as bolts, positioning pins) of the template, or hooking the edge or hole of the template, it is more convenient to apply force for removal. In the flat warping rod head 3 mode, the warping rod head 3 drives the clamping rod 10, the stop block 101 and the torsion spring 11 to rotate clockwise synchronously, so that the clamping rod 10 gradually disengages from the push frame 12, and the torsion spring 11 gradually resets to drive the clamping rod 10 to rotate and embed into the warping rod head 3. In addition, when it is not necessary to form a claw - type warping rod in the hooked warping rod mode, loosen the nut 13 and then take away the push frame 12 downward.

[0042] Embodiment 3: On the basis of Embodiment 2, as Figures 7 - 11 shown, reinforcing cylinders 14 are fixedly connected to the lower parts of the push rod 5 and the sliding rod 7. The reinforcing cylinders 14 are provided with helical grooves 141 distributed circumferentially. Smooth - inner - wall holding cylinders 15 are sleeved outside both the main pipe 1 and the connecting pipe 2. The holding cylinders 15 are rotatably connected with clamping plates 16 symmetrically distributed left and right along the holding cylinders 15. The opposite surfaces of adjacent two clamping plates 16 are provided with rough clamping surfaces. The holding cylinders 15 are provided with limiters 17 symmetrically distributed before and after adjacent clamping plates 16. The limiter 17 is composed of a limit block and a spring thereon. The limiter 17 is used to fix adjacent clamping plates 16. The bottom of the bottom - most connecting pipe 2 is threadedly connected with a clamping cylinder 18. The clamping cylinders 18 have different lengths and can be replaced.

[0043] By setting the reinforcing cylinder 14, the present invention can increase the strength at the connection between the main pipe 1 and the connecting pipe 2 and at the connection between adjacent connecting pipes 2, prevent the connection from breaking, and by hollowing out the helical groove 141 in the reinforcing cylinder 14, the weight of the reinforcing cylinder 14 is reduced, making the device easier to hold by hand.

[0044] To facilitate holding the device, by setting the holding cylinder 15, the frictional force of hand - holding is increased and the comfort of hand - holding is improved. When it is necessary to adjust the appropriate position of the holding cylinder 15 up and down, first rotate the clamping plate 16 upward. The clamping plate 16 squeezes open the limiter 17. In this way, the rough clamping surface of the clamping plate 16 disengages from the outer surface of the main pipe 1 or the connecting pipe 2, and then the holding cylinder 15 with a smooth inner surface can slide up and down. When it is necessary to fix the holding cylinder 15, rotate the clamping plate 16 downward, so that the rough clamping surface of the clamping plate 16 contacts the outer surface of the main pipe 1 or the connecting pipe 2. At this time, the limiter 17 limits and fixes the clamping plate 16.

[0045] If only a large-angle flat tilt rod mode is needed, a short cartridge 18 is screwed on the bottom of the bottom connecting tube 2 so that the inner bottom of the short cartridge 18 contacts the bottom end of the bottom slide rod 7. If only a small-angle hook tilt rod mode is needed, a long cartridge 18 is screwed on the bottom of the bottom connecting tube 2 so that the inner bottom of the long cartridge 18 contacts the bottom end of the bottom slide rod 7. In this way, the needs of more modes can be met.

[0046] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A progressive wall construction formwork removal device, comprising a main pipe (1), the bottom of the main pipe (1) being threadedly connected to at least one connecting pipe (2), characterized in that: The upper part of the connecting pipe (2) is provided with an external thread groove, the lower part of the connecting pipe (2) is provided with an internal thread groove, the top of the main pipe (1) is rotatably connected to a tilting rod head (3), the side of the main pipe (1) close to the tilting rod head (3) is rotatably connected to a gear (4), the tilting rod head (3) is meshed with the gear (4), a push rod (5) is slidably connected inside the main pipe (1), the side of the main pipe (1) close to the gear (4) is slidably connected to a guide frame (501) for pushing and pulling the gear (4) for forward and reverse rotation, one end of the push rod (5) is in contact with the guide frame (501), the side of the guide frame (501) close to the gear (4) is provided with a movable groove, the guide frame (501) is movably connected to the eccentric position of the gear (4) through the movable groove, a spring (6) is fixedly connected between the main pipe (1) and the guide frame (501), the connecting pipe ( 2) is slidably connected to a slide bar (7), the other end of the push rod (5) contacts the adjacent slide bar (7), the slide bar (7) is fixedly connected to a clamping block (701) symmetrically distributed along the slide bar (7), the connecting tube (2) is slidably connected to a clamping frame (8), a side of the clamping frame (8) close to the adjacent clamping block (701) is set as an inclined surface, the inclined surface of the clamping frame (8) is pressed and matched with the adjacent clamping block (701), and a tension spring (9) is fixedly connected between the clamping frame (8) and the adjacent connecting tube (2); it also includes a clamping rod (10), the clamping rod (10) is rotatably connected to the tilting rod head (3), the tilting rod head (3) is fixedly connected to a stopper (101), the stopper (101) contacts the top of the clamping rod (10), and a torsion spring (11) symmetrically distributed along the clamping rod (10) is fixedly connected between the clamping rod (10) and the tilting rod head (3).

2. A progressive wall construction formwork removal device according to claim 1, characterized in that: The invention also comprises a push frame (12), which is sleeved outside the main pipe (1), the push frame (12) is in contact with the bottom of the clamping rod (10), and the push frame (12) is fixed to the main pipe (1) by a nut (13).

3. A progressive wall construction formwork removal device according to claim 2, characterized in that: A reinforcing tube (14) is fixedly connected to a connection point between the push rod (5) close to the main pipe (1) and the connecting pipe (2) and a connection point between the slide rod (7) close to two adjacent connecting pipes (2).

4. A progressive wall construction formwork removal device according to claim 3, characterized in that: The reinforcing cylinder (14) is provided with spiral grooves (141) distributed in the circumferential direction.

5. A progressive wall construction formwork removal device according to claim 4, characterized in that: The main pipe (1) and the connecting pipe (2) are both covered with a gripping tube (15) with a smooth inner wall.

6. A progressive wall construction formwork removal device according to claim 5, characterized in that: It also includes clamping plates (16) symmetrically distributed along the gripping tube (15), the clamping plates (16) being rotatably connected to adjacent gripping tubes (15), the clamping plates (16) being provided with a rough clamping surface, and the gripping tube (15) being provided with stoppers (17) symmetrically distributed along adjacent clamping plates (16), the stoppers (17) being used to fix adjacent clamping plates (16).

7. A progressive wall construction formwork removal device according to claim 6, characterized in that: It also includes a cartridge (18), which is threadedly connected to the bottom of the connecting pipe (2).

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