A steel formwork lifting device

Abstract

This utility model belongs to the technical field of lifting devices, specifically relating to a steel formwork lifting device, comprising: a lifting frame, a lifting cage disposed on one side of the lifting frame, the lifting cage being slidably disposed with the lifting frame, a drive motor fixedly installed at the bottom of one side of the lifting frame, a hinged closed door connected to the side of the lifting cage away from the lifting frame, a drive rod fixedly connected to the output end of the drive motor, a traction wheel fixedly installed on the outer side of the drive rod, a traction rope wound around the outer side of the traction wheel, the traction rope being used to pull the lifting cage up and down and to pull the closed door open and close, an elastic cap disposed on the top of the lifting cage near the closed door, and support sliding blocks disposed on both sides of the middle of the lifting frame. This utility model can, through the setting of the closed door, limit the formwork while pulling the lifting cage upward, thereby preventing the formwork from falling, and when the lifting cage reaches a high position, the support sliding blocks provide support to open the lifting cage.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting devices, specifically relating to a steel formwork lifting device. Background Technology

[0002] Steel formwork lifting devices, driven by hydraulic systems or electric motors, enable precise lifting and positioning of formwork in high-rise building construction. This significantly improves construction efficiency, ensures formwork stability and worker safety, reduces manual handling and labor intensity, and is suitable for complex construction scenarios such as high-rise buildings and large-span structures. In particular, it can save space and reduce labor costs when reusing formwork.

[0003] Problems with existing technology: Existing steel formwork lifting machines are commonly used to lift steel formwork from the first floor to the second floor for convenient installation. During the lifting process, workers need to place the steel formwork under the lifting machine, and then start the machine to lift the formwork upwards. Workers on the second floor then remove the lifted formwork. During the ascent, workers often fail to place the formwork properly due to negligence, and they may also be unable to hold it steady, resulting in the formwork falling during the ascent, posing a safety risk. Utility Model Content

[0004] The purpose of this utility model is to provide a steel formwork lifting device that can limit the formwork while pulling the lifting cage up through the setting of a closed door, thereby preventing the formwork from falling. When the lifting cage reaches a high position, it is supported by a sliding block to open the lifting cage.

[0005] The specific technical solution adopted by this utility model is as follows: A steel formwork lifting device includes: a lifting frame, a lifting cage provided on one side of the lifting frame, the lifting cage being slidably disposed with the lifting frame, and a drive motor being fixedly installed at the bottom of one side of the lifting frame; The lifting cage is hinged to a closed door on the side away from the lifting frame; The output end of the drive motor is fixedly connected to a drive rod, and a traction wheel is fixedly installed on the outside of the drive rod. A traction rope is wound on the outside of the traction wheel. The traction rope is used to pull the lifting cage up and down and to pull the opening and closing of the closed door. The top of the lifting cage near the closed door is equipped with an elastic cap; Support sliding blocks are provided on both sides of the middle of the lifting frame.

[0006] A steering rod is fixedly connected to the top of the lifting frame, and the end of the traction rope extends to the steering rod.

[0007] A sealing rod is fixedly connected to the top of the closed door, and the traction rope extends to the sealing rod through a steering rod.

[0008] The closed door has a groove on the side near the bottom of the sealing rod and close to the lifting cage. A friction-reducing rod is fixedly connected inside the groove and is used to contact the traction rope.

[0009] An upper limit rod is fixedly installed on the top of the lifting cage, and a lower limit rod is fixedly connected to the lifting cage near the lower part of the upper limit rod. The traction rope extends through the sealing rod to the space between the upper limit rod and the lower limit rod.

[0010] The end of the traction rope extends to the middle of one side of the lifting cage and is fixedly connected thereto.

[0011] The lifting cage has a spring hole near the elastic cap, the elastic cap is plugged into the insertion hole, and a spring is fixedly connected between the elastic cap and the insertion hole.

[0012] A sliding ring is fixedly connected to the lifting frame near the supporting sliding block, and the supporting sliding block and the sliding ring are slidably installed.

[0013] The supporting sliding block is positioned at the height of the bottom of the lifting cage when the lifting cage reaches the top, and one end of the supporting sliding block extends to the lower part of the lifting cage.

[0014] A movable handle is fixedly connected to one side of the supporting sliding block.

[0015] The technical effects achieved by this utility model are as follows: This invention uses a drive motor to provide power to wind up the traction rope. The traction rope is located on the side of the sealing rod away from the lifting cage. Under the tension of the traction rope, the sealing door moves towards the lifting cage until it contacts the lifting cage and closes. The end of the traction rope is fixedly connected to the lifting cage, which allows the lifting cage and the sealing door to rise vertically along the lifting frame.

[0016] In this invention, when reaching a high position, the lifting cage can be supported by sliding the sliding block to a position below it, achieving a similar effect to ground level. This allows the lifting cage to be opened and the internal template to be retrieved. The number of rotations and the direction of rotation of the drive motor during lifting can be preset via PCL, simplifying the operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance structure of this utility model; Figure 2 This is a schematic diagram of the unfolded structure of the lifting cage in this utility model; Figure 3 This is a schematic diagram of the drive motor in this utility model; Figure 4 This is a schematic diagram of the steering rod structure in this utility model; Figure 5 This is a schematic diagram of the sealing rod in this utility model; Figure 6 This is a schematic diagram of the structure of the closed door in this utility model; Figure 7 This is a schematic diagram of the elastic cap in this utility model; Figure 8 This is a schematic diagram of the structure of the supporting sliding block in this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Lifting frame; 2. Lifting cage; 101. Support sliding block; 102. Drive motor; 103. Traction wheel; 104. Steering rod; 201. Enclosing door; 202. Sealing rod; 203. Friction reducing rod; 204. Elastic cap; 205. Upper limit rod; 206. Lower limit rod. Detailed Implementation

[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0020] like Figures 1-3 As shown, a steel formwork lifting device includes: a lifting frame 1, a lifting cage 2 is provided on one side of the lifting frame 1, the lifting cage 2 is slidably disposed with the lifting frame 1, and a drive motor 102 is fixedly installed at the bottom of one side of the lifting frame 1.

[0021] In the traditional lifting machine, the lifting frame 1 is used as a support. The template is placed at the lifting cage 2, and the lifting cage 2 is pulled upward by the drive motor 102. The lifting cage 2 slides to the top of the lifting frame 1 and then the template is removed, thereby realizing the lifting of the template.

[0022] See attached document Figures 2-7The lifting cage 2 is hinged to a closed door 201 on the side away from the lifting frame 1; a drive rod is fixedly connected to the output end of the drive motor 102, and a traction wheel 103 is fixedly installed on the outer side of the drive rod. A traction rope is wound around the outer side of the traction wheel 103. The traction rope is used to pull the lifting cage 2 up and down and to pull the closed door 201 to open and close; a steering rod 104 is fixedly connected to the top of the lifting frame 1, and the end of the traction rope extends to the steering rod 104; a sealing rod 202 is fixedly connected to the top of the closed door 201, and the traction rope extends through the steering rod 104 to... At the sealing rod 202; a groove is provided on the side of the sealing door 201 near the bottom of the sealing rod 202 and near the lifting cage 2. A friction-reducing rod 203 is fixedly connected inside the groove. The friction-reducing rod 203 is used to contact the traction rope. An upper limit rod 205 is fixedly installed on the top of the lifting cage 2. A lower limit rod 206 is fixedly connected to the lifting cage 2 near the position below the upper limit rod 205. The traction rope extends through the sealing rod 202 to the position between the upper limit rod 205 and the lower limit rod 206. The end of the traction rope extends to the middle position on one side of the lifting cage 2 and is fixedly connected thereto.

[0023] According to the above structure, when in use, the template is placed on one side of the lifting cage 2, and then the drive motor 102 provides power to wind up the traction rope. At this time, the tension of the traction rope increases. Since the weight of the lifting cage 2 is large, the traction rope is located on the side of the sealing rod 202 away from the lifting cage 2. The closing door 201 moves towards the lifting cage 2 under the tension of the traction rope until it contacts the lifting cage 2 to achieve closure. When the lifting cage 2 comes into contact with the closing door 201 and closes, the end of the traction rope is fixedly connected to the lifting cage 2, which allows the lifting cage 2 and the closing door 201 to rise vertically along the lifting frame 1, thereby limiting the template to prevent it from falling while it rises. The lifting cage 2 and the lifting frame 1 are connected by pulleys. The lifting frame 1 has a sliding groove inside, which makes the lifting cage 2 and the lifting frame 1 always vertically parallel. The lower limit rod 206, the upper limit rod 205 and the friction reduction rod 203 are used to reduce friction with the traction rope.

[0024] See attached document Figures 6-8The lifting cage 2 has a spring cap 204 on its top side near the closed door 201; the lifting frame 1 has supporting sliding blocks 101 on both sides of its middle position; the lifting cage 2 has a spring hole near the spring cap 204, the spring cap 204 is inserted into the insertion hole, and a spring is fixedly connected between the spring cap 204 and the insertion hole; a sliding ring is fixedly connected to the lifting frame 1 near the supporting sliding block 101, and the supporting sliding block 101 is slidably installed with the sliding ring; the supporting sliding block 101 is set at the height of the bottom of the lifting cage 2 when the lifting cage 2 reaches the top, and one end of the supporting sliding block 101 extends to the lower position of the lifting cage 2; a moving handle is fixedly connected to one side of the supporting sliding block 101.

[0025] According to the above structure, when the lifting cage 2 is opened, that is, when the closing door 201 is away from the lifting cage 2, the drive motor 102 is first rotated in the opposite direction to make the traction rope extend more. When the lifting cage 2 is supported below, since the closing door 201 is set vertically at this time, to prevent the traction rope from being continuously released but the closing door 201 not rotating, the elastic cap 204 can push the end of the closing door 201 to move a distance when the tension of the traction rope decreases, so that the closing door 201 tilts and continues to rotate under the action of gravity. That is, the angle of rotation between the closing door 201 and the lifting cage 2 is affected by the extension length of the traction rope. When reaching a high position, the lifting cage 2 can be supported by sliding the sliding support block 101 to a position below it, similar to the ground position. This allows the lifting cage 2 to be opened and the template inside to be removed. The number of rotations and the direction of rotation of the drive motor 102 during lifting can be preset by the PCL to simplify the operation.

[0026] The working principle of this utility model is as follows: During use, the template is placed on one side of the lifting cage 2. Then, the drive motor 102 provides power to wind up the traction rope. Due to the large weight of the lifting cage 2, the traction rope is located on the side of the sealing rod 202 away from the lifting cage 2. Under the tension of the traction rope, the sealing door 201 moves towards the lifting cage 2 until it contacts and closes. When the lifting cage 2 contacts and closes with the sealing door 201, the lifting cage 2 and the sealing door 201 can rise vertically along the lifting frame 1. When the lifting cage 2 opens, the drive motor first rotates in the opposite direction. The motor 102 extends the traction rope further. When it reaches a high position, the sliding support block 101 can be moved to the position below the lifting cage 2 to support the lifting cage 2. Since the closing door 201 is set vertically at this time, it prevents the situation where the traction rope is continuously released but the closing door 201 does not rotate. The elastic cap 204 can push the end of the closing door 201 to move a certain distance when the tension of the traction rope decreases, so that the closing door 201 tilts and continues to rotate under the action of gravity. That is, the angle of rotation between the closing door 201 and the lifting cage 2 is affected by the extension length of the traction rope.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A steel formwork lifting device, comprising a lifting frame (1), a lifting cage (2) provided on one side of the lifting frame (1), the lifting cage (2) being slidably disposed with respect to the lifting frame (1), and a drive motor (102) fixedly installed at the bottom of one side of the lifting frame (1), characterized in that: The lifting cage (2) has a hinged door (201) on the side away from the lifting frame (1). The output end of the drive motor (102) is fixedly connected to a drive rod, and a traction wheel (103) is fixedly installed on the outside of the drive rod. A traction rope is wound on the outside of the traction wheel (103). The traction rope is used to pull the lifting cage (2) up and down and to pull the opening and closing of the closed door (201). The top of the lifting cage (2) near the closed door (201) is provided with an elastic cap (204). Supporting sliding blocks (101) are provided on both sides of the middle of the lifting frame (1).

2. The lifting device according to claim 1, characterized in that: The top of the lifting frame (1) is fixedly connected to a steering rod (104), and the end of the traction rope extends to the steering rod (104).

3. The lifting device according to claim 2, characterized in that: A sealing rod (202) is fixedly connected to the top of the closed door (201), and the traction rope extends to the sealing rod (202) through the steering rod (104).

4. The lifting device according to claim 1, characterized in that: The closed door (201) has a groove on the side near the bottom of the sealing rod (202) and close to the lifting cage (2). A friction-reducing rod (203) is fixedly connected inside the groove. The friction-reducing rod (203) is used to contact the traction rope.

5. The lifting device according to claim 3, characterized in that: The top of the lifting cage (2) is fixedly installed with an upper limit rod (205), and a lower limit rod (206) is fixedly connected to the lifting cage (2) near the lower part of the upper limit rod (205). The traction rope extends through the sealing rod (202) to the space between the upper limit rod (205) and the lower limit rod (206).

6. The lifting device according to claim 1, characterized in that: The end of the traction rope extends to the middle of one side of the lifting cage (2) and is fixedly connected thereto.

7. The lifting device according to claim 1, characterized in that: The lifting cage (2) has a spring hole near the elastic cap (204), the elastic cap (204) is connected to the insertion hole, and a spring is fixedly connected between the elastic cap (204) and the insertion hole.

8. The lifting device according to claim 1, characterized in that: The lifting frame (1) is fixedly connected to a sliding ring near the support sliding block (101), and the support sliding block (101) and the sliding ring are slidably installed.

9. The lifting device according to claim 1, characterized in that: The support sliding block (101) is positioned at the height of the bottom of the lifting cage (2) when the lifting cage (2) reaches the top, and one end of the support sliding block (101) extends to the lower part of the lifting cage (2).

10. The lifting device according to claim 1, characterized in that: A movable handle is fixedly connected to one side of the support sliding block (101).

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