Cast-in-place concrete joint bottom formwork lifting device

Abstract

The utility model relates to a lifting device for a cast-in-place concrete joint bottom formwork, including a frame with openings on both upper and lower sides, two winding rollers for retracting and releasing the lifting ropes installed in the frame, the winding rollers extending along the width direction of the frame, and both ends passing through opposite sides of the frame, a driving component installed on one side of the frame, the driving component used to drive the winding rollers to rotate, and a locking mechanism for locking the winding rollers installed on the other side of the frame. In this solution, the winding rollers are driven by the driving component to rotate forward or reversely, and the forward or reverse rotation of the winding rollers causes the lifting ropes and hooks to descend or ascend, and when the lifting ropes rise and lift the bottom formwork to the height of the construction site, the driving component is closed, and then the winding rollers are locked by the locking mechanism, so as to prevent the bottom formwork from falling back to the ground when it is lifted, thereby reducing the potential safety hazards of ground personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction equipment, in particular to a cast-in-place concrete joint bottom formwork lifting device. Background Art

[0002] Bottom formwork: a type of formwork engineering. Before the construction of concrete engineering, the construction object must be supported by the formwork. For horizontal structures, the bottom formwork, referred to as the bottom formwork, is required. For example, beams, cushions, floor slabs, etc. The bottom formwork comes in various forms, such as tire formwork, wooden formwork, or formwork supported by other materials.

[0003] The common bridge engineering prefabricated box beam wet joint bottom formwork hoisting adopts the winding roller to drag the lifting rope, so that the bottom formwork with the prepared materials under the bridge is forcibly dragged to the bottom of the wet joint. After the bottom formwork is hoisted to a certain height, due to the lack of a locking structure for the winding roller, it is easy for the bottom formwork to fall back to the ground when hoisted, causing a safety hazard to the ground personnel and low safety. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a cast-in-place concrete joint bottom form lifting device to solve the problem in the prior art that after the bottom form is lifted to a certain height, the bottom form is prone to fall back to the ground due to the lack of a locking structure for the winding roller.

[0005] The utility model is realized by the following technical solutions:

[0006] The cast-in-place concrete joint bottom form lifting device includes a frame with openings on both the upper and lower sides. Two winding rollers for retracting and releasing the lifting ropes are installed in the frame. The winding rollers extend along the width direction of the frame, and both ends pass through the opposite sides of the frame. A driving component is installed on one side of the frame, and the driving component is used to drive the winding roller to rotate. A locking mechanism for locking the winding roller is installed on the other side of the frame.

[0007] Furthermore, the locking mechanism includes a ratchet and a locking block, the ratchet is fixedly mounted on the winding roller, a fixing rod is mounted on one side of the frame, and the locking block is rotatably engaged with the fixing rod.

[0008] Furthermore, the driving assembly includes two first sprockets, a first chain and a motor, the motor output shaft is connected to one end of one of the winding rollers, the two first sprockets are fixedly mounted on the two winding rollers respectively, and the first chain is meshingly connected to the two first sprockets.

[0009] Furthermore, a fixing block is arranged at the bottom end of the frame, a positioning ring is arranged at one side of the fixing block, and an end of the lifting rope away from the winding roller passes through the positioning ring.

[0010] Furthermore, it also includes an adjusting component, which is rotatably matched with the two winding rollers and is used to adjust the spacing between the sling ropes on the winding rollers.

[0011] Further, the adjustment assembly includes two reciprocating screws installed in the frame, a first transmission assembly and a second transmission assembly, the two reciprocating screws are arranged in parallel and extend along the length direction of the winding roller, the two ends of the reciprocating screws are respectively rotatably connected to the opposite sides of the inner wall of the frame, and one end thereof passes through one side of the frame, the first transmission group is transmission-matched to the winding roller and one of the reciprocating screws, and the second transmission group is transmission-matched to the two reciprocating screws;

[0012] The two reciprocating screws are both slidably matched with sliders, and one side of the sliders is provided with guide rings for the suspension ropes to pass through.

[0013] Furthermore, a limit rod is arranged in the frame, which is located on one side of the reciprocating screw and is arranged parallel to the reciprocating screw. Both ends of the limit rod are rotatably connected to the opposite sides of the inner wall of the frame respectively, and the slider is slidably fitted on the limit rod.

[0014] Further, the first transmission assembly includes a second sprocket, a third sprocket and a second chain, the second sprocket is fixedly mounted on the winding roller, the third sprocket is fixedly mounted on one of the reciprocating screws, and the second chain and the second sprocket are meshedly connected with the third sprocket;

[0015] The second transmission assembly includes two fourth sprockets and a third chain which are respectively fixedly mounted on the two reciprocating screws, and the third chain is meshingly connected with the two fourth sprockets.

[0016] The beneficial effects of the utility model are:

[0017] The cast-in-place concrete joint bottom form lifting device drives the winding roller to rotate forward or reversely through a driving component. The forward or reverse rotation of the winding roller causes the lifting rope and the hook to descend or ascend. When the lifting rope rises and lifts the bottom form to the height of the construction site, the driving component is closed, and then the winding roller is locked through a locking mechanism to prevent the bottom form from falling back to the ground when it is lifted, thereby reducing the safety hazards of ground personnel.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic diagram of the utility model (first viewing angle);

[0020] Figure 2 It is a three-dimensional diagram of the utility model (second viewing angle);

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the lifting rope and the winding roller of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the regulating component of the utility model.

[0024] In the figure: 1. frame; 2. winding roller; 3. lifting rope; 4. hook; 5. fixing block; 6. positioning ring;

[0025] 7. Locking mechanism; 701. Ratchet; 702. Fixing rod; 703. Locking block;

[0026] 8. driving assembly; 801. motor; 802. first sprocket; 803. first chain;

[0027] 9. Adjustment assembly; 901. Reciprocating screw; 902. First transmission assembly; 9021. Second sprocket; 9022. Third sprocket; 9023. Second chain; 903. Second transmission assembly; 9031. Fourth sprocket; 9032. Third chain; 904. Slider; 905. Guide ring; 906. Limit rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0033] See also Figure 1-5 The utility model provides a technical solution: a cast-in-place concrete joint bottom mold lifting device, including a frame 1 with openings on both upper and lower sides, two winding rollers 2 for retracting and releasing a suspension rope 3 are installed in the frame 1, the winding roller 2 extends along the width direction of the frame 1, and both ends pass through the opposite sides of the frame 1, one side of the frame 1 is installed with a driving component 8, the driving component 8 is used to drive the winding roller 2 to rotate, and the other side of the frame 1 is installed with a locking mechanism 7 for locking the winding roller 2.

[0034] In this solution, one end of the suspension rope 3 is bound to the winding roller 2, and the other end is bound to a hook 4, and is connected to the bottom mold through the hook 4.

[0035] When in use, first drive the winding roller 2 to rotate forward through the driving component 8, so that the lifting rope 3 wound on the winding roller 2 and the connected hook 4 fall to the ground, and the staff connects the hook 4 to the bottom mold, and then control the driving component 8 to make the winding roller 2 rotate in the opposite direction, thereby driving the lifting rope 3 to be wound on the winding roller 2, and driving the bottom mold to be lifted upward during the winding process of the lifting rope 3. When the bottom mold is lifted to a certain height, the driving component 8 is closed to stop the winding roller 2 from rotating, and then the winding roller 2 is locked by the locking mechanism 7 to facilitate the staff to carry out construction.

[0036] Among them, the winding roller 2 is driven to rotate forward or reversely by the driving component 8, and the forward or reverse rotation of the winding roller 2 causes the lifting rope 3 and the hook 4 to descend or rise. When the lifting rope 3 rises and lifts the bottom form to the height of the construction site, the driving component 8 is closed, and then the winding roller 2 is locked by the locking mechanism 7, so as to prevent the bottom form from falling back to the ground when it is lifted, thereby reducing the safety hazards of ground personnel.

[0037] In this embodiment, the locking mechanism 7 includes a ratchet 701 and a locking block 703 . The ratchet 701 is fixedly mounted on the winding roller 2 . A fixing rod 702 is mounted on one side of the frame 1 . The locking block 703 is rotatably engaged with the fixing rod 702 .

[0038] The ratchet 701 is installed on the winding roller 2, and can rotate clockwise or counterclockwise with the winding roller 2, and its rotation state is restricted by the locking block 703, so that it cannot rotate in the opposite direction. When the winding roller 2 stops rotating, the staff turns the locking block 703, and the locking block 703 rotates around the fixed rod 702 as the axis, and the locking block 703 is engaged with the tooth groove of the ratchet 701, so that the winding roller 2 stops rotating;

[0039] Among them, the locking block 703 is rotatably installed on the frame 1 through a torsion spring (the torsion spring is not shown in the attached figure). The torsion spring causes the locking block 703 to rotate in a natural state and makes it turn in the same direction as the winding roller 2. One end of the locking block 703 is against the surface of the winding roller 2.

[0040] In this embodiment: the driving assembly 8 includes two first sprockets 802, a first chain 803 and a motor 801, the output shaft of the motor 801 is connected to one end of one of the winding rollers 2, the two first sprockets 802 are fixedly installed on the two winding rollers 2, and the first chain 803 is meshed and connected with the two first sprockets 802.

[0041] When in use, start the motor 801, and the motor 801 drives one of the winding rollers 2 to rotate. The rotation of the winding roller 2 drives the first sprocket 802 and the first chain 803 to rotate. The rotation of the first chain 803 drives the other first sprocket 802 and the other winding roller 2 to rotate together, so that the two lifting ropes 3 and the hook 4 can hook the bottom mold at the same time, thereby improving construction efficiency.

[0042] Among them, the motor model is: Z4-250-31.

[0043] In this embodiment: a fixing block 5 is arranged at the bottom end of the frame 1 , a positioning ring 6 is arranged at one side of the fixing block 5 , and one end of the suspension rope 3 away from the winding roller 2 passes through the positioning ring 6 .

[0044] In this solution, the fixing block 5 extends along the width direction of the frame 1 , and the positioning ring 6 is fixedly installed at the middle end of the fixing block 5 .

[0045] When in use, one end of the lifting rope 3 passes through the positioning ring 6. When the lifting rope 3 drives the bottom mold to rise, the lifting rope 3 and the bottom mold can always rise with one axis point during the rising process, thereby improving the stability of the rising of the bottom mold.

[0046] In this embodiment, an adjusting component 9 is also included. The adjusting component 9 is rotatably matched with the two winding rollers 2 . The adjusting component 9 is used to adjust the spacing between the sling ropes 3 and the winding rollers 2 .

[0047] When the winding roller 2 drives the sling rope 3 and the bottom mold to lift, the sling rope 3 will be wound on the winding roller 2. During the winding process of the sling rope 3, the spacing of the sling rope 3 on the winding roller 2 can be adjusted by adjusting the adjustment component 9 so that the sling rope 3 is evenly wound on the entire winding roller 2.

[0048] In this embodiment: the adjustment component 9 includes two reciprocating screws 901 installed in the frame 1, a first transmission component 902 and a second transmission component 903. The two reciprocating screws 901 are arranged in parallel and extend along the length direction of the winding roller 2. The two ends of the reciprocating screws 901 are respectively rotatably connected to the inner wall of the frame 1 on opposite sides, and one end thereof passes through one side of the frame 1. The first transmission component 902 is transmission-matched to the winding roller 2 and one of the reciprocating screws 901, and the second transmission component 903 is transmission-matched to the two reciprocating screws 901.

[0049] The two reciprocating screws 901 are both slidably matched with sliders 904, and one side of the sliders 904 is provided with a guide ring 905 for the suspension rope 3 to pass through.

[0050] In this solution, the guide ring 905 is located above the directional ring. When the winding roller 2 drives the bottom mold to rise, the directional ring is used to make the lifting rope 3 always rise along one axis. Then, the guide ring 905 moves back and forth to drive the lifting rope 3 to be evenly wound on the winding roller 2.

[0051] When in use, when the winding roller 2 is rotating, one of the winding rollers 2 drives one of the reciprocating screws 901 to rotate through the first transmission assembly 902, and the rotation of one of the reciprocating screws 901 drives the other reciprocating screw 901 to rotate together through the second transmission assembly 903. The rotation of the two reciprocating screws 901 can respectively drive the two sliders 904 and the guide ring 905 to reciprocate, so that the two suspension ropes 3 are respectively and evenly wound on the two winding rollers 2.

[0052] In this embodiment: a limit rod 906 is set in the frame 1, the limit rod 906 is located on one side of the reciprocating screw 901 and is set parallel to the reciprocating screw 901, both ends of the limit rod 906 are respectively rotatably connected to the opposite sides of the inner wall of the frame 1, and the slider 904 is slidably fitted on the limit rod 906.

[0053] During the process of winding the sling rope 3 , the slider 904 will move back and forth on the reciprocating screw 901 , and the limit rod 906 can prevent the slider 904 from rotating together with the reciprocating screw 901 .

[0054] In this embodiment: the first transmission assembly 902 includes a second sprocket 9021, a third sprocket 9022 and a second chain 9023, the second sprocket 9021 is fixedly mounted on the winding roller 2, the third sprocket 9022 is fixedly mounted on one of the reciprocating screws 901, and the second chain 9023 and the second sprocket 9021 are meshedly connected with the third sprocket 9022;

[0055] The second transmission assembly 903 includes two fourth sprockets 9031 and a third chain 9032 respectively fixedly mounted on the two reciprocating screws 901 , and the third chain 9032 is meshedly connected with the two fourth sprockets 9031 .

[0056] One of the winding rollers 2 and the second sprocket 9021 rotates driven by the motor 801, and the second sprocket 9021 drives the second chain 9023, the third sprocket 9022, the fourth sprocket 9031 and one of the reciprocating screws 901 to rotate simultaneously, and the rotation of the fourth sprocket 9031 drives the third chain 9032 and another reciprocating screw 901 to rotate.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A cast-in-place concrete joint bottom form lifting device, comprising a frame (1) with openings on both upper and lower sides, characterized in that: Two winding rollers (2) for winding and releasing the sling rope (3) are installed in the frame (1), and the winding rollers (2) extend along the width direction of the frame (1), and both ends pass through the opposite sides of the frame (1). A driving component (8) is installed on one side of the frame (1), and the driving component (8) is used to drive the winding roller (2) to rotate. A locking mechanism (7) for locking the winding roller (2) is installed on the other side of the frame (1).

2. The cast-in-place concrete joint bottom formwork lifting device according to claim 1 is characterized in that: The locking mechanism (7) comprises a ratchet (701) and a locking block (703); the ratchet (701) is fixedly mounted on the winding roller (2); a fixing rod (702) is mounted on one side of the frame (1); and the locking block (703) is rotatably engaged with the fixing rod (702).

3. The cast-in-place concrete joint bottom formwork lifting device according to claim 1 is characterized in that: The driving assembly (8) comprises two first sprockets (802), a first chain (803) and a motor (801); the output shaft of the motor (801) is connected to one end of one of the winding rollers (2); the two first sprockets (802) are respectively fixedly mounted on the two winding rollers (2); and the first chain (803) is meshingly connected to the two first sprockets (802).

4. The cast-in-place concrete joint bottom formwork lifting device according to claim 1, characterized in that: A fixing block (5) is provided at the bottom end of the frame (1), a positioning ring (6) is provided on one side of the fixing block (5), and the end of the suspension rope (3) away from the winding roller (2) passes through the positioning ring (6).

5. The cast-in-place concrete joint bottom formwork lifting device according to any one of claims 1 to 4, characterized in that: It also comprises an adjusting component (9), wherein the adjusting component (9) is rotatably matched with the two winding rollers (2), and the adjusting component (9) is used to adjust the spacing between the sling rope (3) and the winding rollers (2).

6. The cast-in-place concrete joint bottom formwork lifting device according to claim 5, characterized in that: The adjusting assembly (9) comprises two reciprocating screws (901) installed in the frame (1), a first transmission assembly (902) and a second transmission assembly (903); the two reciprocating screws (901) are arranged in parallel and extend along the length direction of the winding roller (2); the two ends of the reciprocating screws (901) are respectively rotatably connected to the inner wall of the frame (1) at opposite sides, and one end thereof passes through one side of the frame (1); the first transmission assembly (902) is transmission-matched to the winding roller (2) and one of the reciprocating screws (901); and the second transmission assembly (903) is transmission-matched to the two reciprocating screws (901); The two reciprocating screws (901) are both slidably matched with a slider (904), and one side of the slider (904) is provided with a guide ring (905) for the suspension rope (3) to pass through.

7. The cast-in-place concrete joint bottom formwork lifting device according to claim 6, characterized in that: A limit rod (906) is arranged in the frame (1), the limit rod (906) is located on one side of the reciprocating screw (901) and is arranged parallel to the reciprocating screw (901), both ends of the limit rod (906) are rotatably connected to the inner wall of the frame (1) on opposite sides, and the slider (904) is slidably fitted on the limit rod (906).

8. The cast-in-place concrete joint bottom formwork lifting device according to claim 6, characterized in that: The first transmission assembly (902) comprises a second sprocket (9021), a third sprocket (9022) and a second chain (9023); the second sprocket (9021) is fixedly mounted on the winding roller (2); the third sprocket (9022) is fixedly mounted on one of the reciprocating screws (901); the second chain (9023) and the second sprocket (9021) are meshedly connected with the third sprocket (9022); The second transmission assembly (903) comprises two fourth sprockets (9031) and a third chain (9032) respectively fixedly mounted on the two reciprocating screws (901); the third chain (9032) is meshingly connected with the two fourth sprockets (9031).

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