Auxiliary construction lifting appliance suitable for lifting guardrail formwork by forklift

Abstract

The auxiliary construction lifting appliance comprises a lifting appliance body, a servo motor, a screw rod, hooks, push rods and clamping plates, the lifting appliance body is of a frame type structure, the servo motor is arranged on one side of the top of the lifting appliance body, the output end of the servo motor is rotationally connected with bolt rods, the bolt rods are connected with the hooks through threads, and the push rods are arranged on the clamping plates. A push rod is slidably connected to the inner side of the top of the lifting appliance body and is of a bent structure, the bottom end of the push rod movably penetrates into the inner side of the lifting appliance body, a pull rope is connected to the top end of the push rod, fixing frames are connected to the two ends of the pull rope respectively and fixedly connected with the two sides of the top of the lifting appliance body respectively, and first spring rods are installed on the inner walls of the fixing frames. The ends of the pull ropes are fixedly connected to the output ends of the first spring rods respectively, the output ends of the first spring rods are fixedly connected with connecting rods, and the connecting rods are connected with clamping plates respectively. The guardrail mold clamping device aims to solve the problem that a guardrail mold is not stably clamped and is damaged.

Description

Technical Field

[0001] This application relates to the field of auxiliary construction technology for forklift hoisting of guardrail formwork, for example, to an auxiliary construction lifting tool suitable for forklift hoisting of guardrail formwork. Background Technology

[0002] With the further acceleration of urbanization in my country, bridge engineering has ushered in a period of rapid development, and guardrails, as an important component of bridge engineering, play a vital role.

[0003] During the construction of cast-in-place crash barriers, it was found that although existing forklifts can transport barrier formwork, the hooks in the middle of the forklifts are usually fixed. This causes the barrier formwork to be unstable when being moved, due to the gap between the formwork and the front and back of the crane. This results in frequent shaking and even impacts on the surface of the forklifts, causing damage to the forklifts or the barrier formwork.

[0004] Therefore, an auxiliary construction lifting tool suitable for forklifts to lift guardrail formwork is proposed to address the above problems. Utility Model Content

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides an auxiliary construction lifting tool suitable for forklifts to lift guardrail formwork, in order to solve the problem of unstable holding of guardrail molds, which causes damage.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An auxiliary construction lifting tool for forklift lifting guardrail formwork includes a lifting tool body, a servo motor, a screw, a hook, a push rod, and clamps. The lifting tool body has a frame structure, and a servo motor is installed on one side of the top. The output end of the servo motor is rotatably connected to a bolt rod, and the end of the bolt rod is rotatably connected to a belt. One end of the belt is rotatably sleeved with another set of bolt rods. Each bolt rod is threadedly connected to a hook for suspending the guardrail formwork. A push rod is slidably connected to the inner top of the lifting tool body. The push rod has a bent structure, and its bottom end is movably inserted into the inner side of the lifting tool body. A pull rope is connected to the top end of the push rod, and both ends of the pull rope are connected to fixed frames. The fixed frames are fixedly connected to the top two sides of the lifting tool body. A first spring rod is installed on the inner wall of each fixed frame. The ends of the pull ropes are fixedly connected to the output ends of the first spring rods, and the pull ropes pass through the corresponding ends of the fixed frames. Each output end of the first spring rod is fixedly connected to a connecting rod, and the connecting rods are polygonal. Each connecting rod is connected to a clamp.

[0009] In application, the main body of the lifting device is installed at the output end of the forklift using screws, and then the guardrail template is fixed. It is then hung on hooks using steel wires for transport. When the guardrail template needs to be adjusted forward or backward, the servo motor switch is activated, causing the servo motor output to drive the corresponding bolt rod to rotate. Simultaneously, the belt drives another set of bolt rods to rotate, causing the two sets of hooks to slide along the main body of the lifting device, thus changing the position of the guardrail template. When the guardrail template approaches the inner wall of the lifting device, it first contacts the bottom end of the exposed push rod. Continuing to push the push rod, the top end of the push rod pulls the rope. As the rope pulls, it engages the output ends of the two sets of first spring rods. Pulling inward causes the connecting rod to slide inward, and as the push rod is squeezed and retracted by the guardrail template, the clamping plates also adhere to the guardrail template and clamp it. By keeping the suspended and fixed material as close as possible to the side wall of the lifting device, the gap between the end of the guardrail template and the lifting device body can be reduced during transportation. This avoids the problem of frequent shaking and impact of the material due to excessive gaps, reducing damage to the guardrail template and the lifting device body. At the same time, the two sets of clamping plates clamping the guardrail template can reduce the problem of the guardrail template swaying left and right under the action of inertia when the forklift turns, further improving the stability of the guardrail template during transportation and increasing its practicality.

[0010] Furthermore, the clamping plate and the end of the connecting rod are slidably connected. The top of the clamping plate has an inner groove, and the end of the connecting rod has multiple sets of locking holes. Two sets of elastic ropes are fixed to the inner wall of the inner groove. Each elastic rope has a slider fixed to its end, and the slider is slidably connected to the inner wall of the inner groove. Each slider has a connecting frame hinged to its top. One end of each connecting frame is hinged to both ends of the same pull plate. The bottom of the pull plate has multiple sets of limiting members, which pass through the bottom of the inner groove and are slidably connected. The bottom of the pull plate has a locking pin, and the locking pin and the locking hole are shaped to match. The locking pin passes through the corresponding locking hole and penetrates the interior of the inner groove.

[0011] When adjusting the working position of the clamping plate, the operator can manually pull the plate upwards using the handle until the locking pin disengages from the locking hole. As the plate slides, the slider slides along the inner wall of the inner groove, lengthening the elastic rope and generating a reaction force. Then, depending on the length of the material to be clamped, the clamping plate is slid along the end of the connecting rod until it is adjusted to the designated position. After that, the handle at the top of the plate is released, and with the reaction force generated by the elastic rope, the locking pin is re-engaged into the corresponding locking hole. This completes the adjustment and fixation of the clamping plate, improving its flexibility during operation and reducing the problem of insufficient flexibility when clamping materials of different lengths, which prevents fine-tuning of dimensional errors and makes it difficult to match more types of materials. At the same time, the elastic rope improves the stability of the locking pin when it is engaged in the locking hole, reducing the problem of the locking pin disengaging and the clamping plate shaking due to the large vibration force when the vehicle is moving and transferring.

[0012] Furthermore, a storage plate is fixedly connected to the inner wall of the fixing frame. The bottom of the storage plate has a hollow structure and a sliding plate is slidably connected to it. Two sets of second spring rods are fixedly connected to the inner wall of the storage plate. The ends of the second spring rods are all fixedly connected to one end of the sliding plate. A cylindrical fixing rod is provided at the top of the other end of the sliding plate. The middle part of the fixing rod abuts against the pull rope, and the top of the fixing rod has an inwardly bent structure.

[0013] By installing a storage plate on the inner wall of the fixed frame, the middle part of the pull rope directly contacts the fixed rod when it is in use and sliding. The bent part at the top of the fixed rod limits the position of the pull rope. As the pulling force of the pull rope increases, the fixed rod is pulled outward by the force of the pull rope. Consequently, the second spring rod also undergoes elastic strain under tension. The greater the pulling force on the fixed rod, the greater the reaction force generated by the second spring rod. This allows the pull rope to directly contact the fixed frame during movement, avoiding direct contact and sliding between the pull rope and the edges of the fixed frame, reducing the problem of excessive wear on the pull rope. The second spring rod can fine-tune and buffer the working angle of the pull rope according to the pulling force, further improving the service life of the pull rope.

[0014] Furthermore, a column is fixedly connected to the top of the lifting device body, and multiple sets of toothed grooves are opened on the bottom side of the top of the push rod. A toothed block is rotatably connected to the top of the column, and the toothed block meshes in the toothed groove. The toothed groove can constrain the toothed block, and a connecting block is provided on the central axis side wall of the toothed block.

[0015] In application, a rotating toothed block is installed at the top of the main body of the spreader. When the push rod slides, the toothed groove at its bottom will synchronously drive the toothed block to rotate. Under the action of the meshing of the two sets of teeth, the middle part of the push rod is supported. At the same time, the push rod slides horizontally as a whole, which can support the middle part of the push rod. This reduces the problem of the middle part of the push rod bending after long-term use due to the large length of the push rod protruding to the outside. It can also reduce the problem of the top of the push rod swinging and deforming when the vehicle turns, which makes it difficult to synchronize the output ends of the two sets of first spring rods.

[0016] Furthermore, the outer wall of the clamping plate is provided with multiple sets of first elastic elements, each of which is sleeved with a sliding rod, and the end of the first elastic element is fixedly connected to the end with the sliding rod. One end of each sliding rod movably passes through the clamping plate and is fixedly connected to a rubber plate.

[0017] When the clamping plate approaches the guardrail template, the rubber plate will first contact the guardrail template. As the clamping plate is pushed further, the rubber plate will be squeezed and the overall length of the first elastic element will be stretched, making deep contact with the guardrail template. The friction between the guardrail template and the clamping plate can be increased through the rubber plate and the first elastic element, further preventing the guardrail template from shifting or shaking during transportation. The elastic first elastic element makes the contact between the rubber plate and the guardrail template more stable.

[0018] Furthermore, the bottom end of the second elastic element is fixedly connected to the top of the connecting block, and a counterweight ball is fixedly connected to the top of the second elastic element. The counterweight ball is positioned close to the belt, and the counterweight ball is covered with a sponge pad. When the counterweight ball is close to the belt, the sponge pad will first contact the belt, which can reduce the wear on the belt caused by impact and further improve the service life of the belt.

[0019] When the toothed block rotates under the action of the tooth groove, the middle part of the second elastic element may be stretched and deformed under the action of the centrifugal force of the counterweight ball. As a result, the counterweight ball may come into contact with the belt during the rotation of the toothed block, which will have an impact effect on the belt. This knocks away some of the dust and other impurities attached to the belt, which can improve the cleanliness of the middle part of the belt and reduce the problem of dust accumulation in the middle part of the belt due to long-term outdoor use. It also reduces the corrosion cycle of the belt surface. The elastic second elastic element can reduce the problem of the counterweight ball getting stuck when impacting.

[0020] Furthermore, a pad is fixedly connected to the bottom end of the push rod, and a storage groove matching the shape of the pad is opened in the middle of the main body of the lifting device.

[0021] When the guardrail template approaches the push rod, it first contacts the pad. As the push rod is further compressed, the pad retracts into the inner wall of the storage groove. The pad increases the contact area between the guardrail template and the end of the push rod, improving the stability of the push rod during sliding. At the same time, the pad can limit the working position of the push rod. When the pad is retracted into the storage groove, it can ensure that the compression of the push rod by the guardrail template stops and that the push rod will not detach from the main body of the lifting device, reducing the need for frequent installations later.

[0022] Furthermore, the fixed rod is rotatably sleeved with a rotating cylinder, and the outer side of the rotating cylinder is provided with a rough surface structure.

[0023] The rotating drum causes the push rod to pull the rope, which in turn deeply compresses the drum. The roughened drum rotates synchronously around the fixed rod under the action of the rope, further reducing wear on the rope and lowering the probability of rope breakage. The roughened surface on the outside of the drum also increases the friction generated when it comes into contact with the rope.

[0024] The present disclosure provides an auxiliary construction lifting tool suitable for forklift lifting of guardrail formwork, which can achieve the following technical effects:

[0025] 1) When the servo motor switch is activated, the output end of the servo motor drives the corresponding bolt rod to rotate, causing the two sets of hooks to slide along the main body of the lifting device, thereby changing the position of the guardrail template. After the guardrail template approaches the push rod, the top of the push rod will pull the pull rope. When the pull rope moves, it will pull the output ends of the two sets of first spring rods inward, and the clamping plate will also fit against the guardrail template and clamp it. By keeping the suspended and fixed material as close as possible to the side wall of the main body of the lifting device, the gap between the end of the guardrail template and the main body of the lifting device can be reduced during the conveying process. This avoids the problem of frequent shaking and impact of the material due to excessive gap, and reduces damage to the guardrail template and the main body of the lifting device.

[0026] 2) The two sets of clamps that simultaneously hold the guardrail template can reduce the problem of the guardrail template swaying left and right under the action of inertia when the forklift is turning, further improving the stability of the guardrail template during transportation and achieving the purpose of increasing practicality.

[0027] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0028] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings are not scaled. Other drawings can be obtained by those skilled in the art based on these drawings.

[0029] Figure 1 This is a schematic diagram of an auxiliary construction lifting tool structure for forklift lifting guardrail formwork according to the present invention;

[0030] Figure 2 This is a schematic diagram of the bottom structure of an auxiliary construction lifting tool for forklifts to lift guardrail templates according to this utility model;

[0031] Figure 3 This is a schematic diagram of the hook structure in an auxiliary construction lifting tool for forklifts used for lifting guardrail templates according to this utility model;

[0032] Figure 4 This is a schematic diagram of the pull plate structure in an auxiliary construction lifting tool for forklifts to lift guardrail templates according to this utility model;

[0033] Figure 5 This is a schematic diagram of the column structure in an auxiliary construction lifting tool for forklifts to lift guardrail templates according to this utility model;

[0034] Figure 6This is a schematic diagram of the clamping plate structure in an auxiliary construction lifting tool for forklifts to lift guardrail templates according to this utility model;

[0035] Figure 7 This is a utility model Figure 6 Enlarged structural diagram at point A in the middle;

[0036] Figure 8 This is a utility model Figure 6 Enlarged structural diagram at point B.

[0037] Figure label:

[0038] 1. Lifting device body; 11. Servo motor; 12. Bolt rod; 13. Hook; 14. Belt; 15. Push rod; 16. Pull rope; 17. Fixing frame; 18. First spring rod; 19. Connecting rod; 110. Clamping plate; 2. Inner groove; 21. Locking hole; 22. Elastic rope; 23. Slider; 24. Connecting frame; 25. Pull plate; 26. Limiting component; 27. Locking pin; 3. Storage plate; 31. Slide plate; 32. Second spring rod; 33. Fixing rod; 4. Column; 41. Tooth groove; 42. Tooth block; 43. Connecting block; 5. First elastic element; 51. Slide rod; 52. Rubber plate; 6. Second elastic element; 61. Counterweight ball; 7. Pad plate; 71. Storage groove; 8. Sponge pad; 9. Rotary drum. Detailed Implementation

[0039] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0040] like Figure 1-8As shown, an auxiliary construction lifting tool suitable for forklift lifting of guardrail formwork includes a lifting tool body 1, a servo motor 11, a screw rod, a hook 13, a push rod 15, and a clamping plate 110. The lifting tool body 1 has a frame structure, and a servo motor 11 is installed on one side of the top. A bolt rod 12 is rotatably connected to the output end of the servo motor 11. A belt 14 is rotatably connected to the end of the bolt rod 12. Another set of bolt rods 12 is rotatably sleeved at one end of the belt 14. Each bolt rod 12 is threadedly connected to a hook 13 for hanging the guardrail formwork. A push rod 15 is slidably connected to the inner top of the lifting tool body 1. The push rod 15 has a bent structure and its bottom end can be inserted into the inside of the lifting device body 1. The top end of the push rod 15 is connected to a pull rope 16. The two ends of the pull rope 16 are respectively connected to a fixing frame 17. The fixing frame 17 is fixedly connected to the top two sides of the lifting device body 1. The inner wall of the fixing frame 17 is equipped with a first spring rod 18. The ends of the pull rope 16 are respectively fixed to the output ends of the first spring rod 18, and the pull rope 16 passes through the corresponding ends of the fixing frame 17. The output ends of the first spring rod 18 are all fixed to a connecting rod 19, and the connecting rod 19 is polygonal. The connecting rod 19 is respectively connected to a clamping plate 110.

[0041] In application, the lifting device body 1 is installed at the output end of the forklift using screws, and then the guardrail template is fixed. It is then hung on hooks 13 with steel wires for transport. When the guardrail template needs to be adjusted forward or backward, the servo motor 11 switch is activated, causing the output end of the servo motor 11 to drive the corresponding bolt rod 12 to rotate. Simultaneously, the belt 14 drives another set of bolt rods 12 to rotate, causing the two sets of hooks 13 to slide along the lifting device body 1, thus changing the position of the guardrail template. When the guardrail template approaches the inner wall of the lifting device body 1, it first contacts the bottom end of the exposed push rod 15. Continuing to push the push rod 15, the top end of the push rod 15 pulls the pull rope 16. As the pull rope 16 moves, it pulls the two sets of first springs... When the output end of the spring rod 18 is pulled inward, the connecting rod 19 slides inward. During the process of the push rod 15 being squeezed and stored by the guardrail template, the clamping plate 110 also adheres to the guardrail template and clamps it. By keeping the suspended and fixed material as close as possible to the side wall of the lifting device body 1, the gap between the end of the guardrail template and the lifting device body 1 during transportation can be reduced, avoiding the problem of frequent shaking and impact of the material due to excessive gap, and reducing damage to the guardrail template and the lifting device body 1. At the same time, the two sets of clamping plates 110 clamping the guardrail template can reduce the problem of the guardrail template swaying left and right under the action of inertia when the forklift turns, further improving the stability of the guardrail template during transportation, and achieving the purpose of increasing practicality.

[0042] like Figure 4 , Figure 6 , Figure 7 As shown, the clamping plate 110 and the end of the connecting rod 19 are slidably connected. The top of the clamping plate 110 has an inner groove 2. The end of the connecting rod 19 has multiple sets of locking holes 21. Two sets of elastic ropes 22 are fixedly connected to the inner wall of the inner groove 2. Each end of the elastic rope 22 is fixedly connected to a slider 23, and the slider 23 is slidably connected to the inner wall of the inner groove 2. Each slider 23 has a connecting frame 24 hinged to its top. One end of each connecting frame 24 is hinged to both ends of the same pull plate 25. 5. Multiple sets of limiting members 26 are provided at the bottom, and the limiting members 26 pass through the bottom of the inner groove 2 and slide. The bottom of the pull plate 25 is fixedly connected with a locking pin 27, and the locking pin 27 and the locking hole 21 are shaped to match. The locking pin 27 passes through the corresponding locking hole 21 and penetrates the interior of the inner groove 2. When adjusting the working position of the clamping plate 110, the operator can use their hand to pull the pull plate 25 upward through the handle until the locking pin 27 disengages from the locking hole 21. The pull plate 25 then moves forward. While sliding, the slider 23 slides along the inner wall of the inner groove 2, pulling the elastic rope 22 to lengthen and generating a reaction force. Then, depending on the length of the material to be clamped, the clamping plate 110 slides on the end of the connecting rod 19 until it is adjusted to the designated position. Then, the handle at the top of the pull plate 25 is released, and with the reaction force generated by the elastic rope 22, the locking pin 27 is re-engaged into the corresponding locking hole 21. This completes the adjustment and fixation of the clamping plate 110, which improves the flexibility of the clamping plate 110 during operation and reduces the problem of insufficient flexibility of the clamping plate 110 when clamping materials of different lengths, which makes it difficult to fine-tune some dimensional errors and match more types of materials. At the same time, the elastic rope 22 improves the stability of the locking pin 27 when it is engaged in the locking hole 21, reducing the problem of the locking pin 27 disengaging and the clamping plate 110 shaking when the vehicle is moving and transferring due to large vibration.

[0043] like Figure 8As shown, a storage plate 3 is fixedly connected to the inner wall of the fixing frame 17. The bottom of the storage plate 3 is a hollow structure and a sliding plate 31 is slidably connected to it. Two sets of second spring rods 32 are fixedly connected to the inner wall of the storage plate 3. The ends of the second spring rods 32 are all fixedly connected to one end of the sliding plate 31. A cylindrical fixing rod 33 is provided at the top of the other end of the sliding plate 31. The middle part of the fixing rod 33 abuts against the pull rope 16, and the top of the fixing rod 33 has an inwardly bent structure. By setting a storage plate 3 on the inner wall of the fixing frame 17, the middle part of the pull rope 16 will directly contact the fixing rod 33 when it is in use and sliding. The bent part at the top of the fixing rod 33 will limit the position of the pull rope 16. As the pulling force of the pull rope 16 increases, the fixing rod 33 will be pulled outward by the force of the pull rope 16. As a result, the second spring rod 32 will also be subjected to tension and undergo elastic strain. At the same time, the greater the pulling force on the fixing rod 33, the greater the reaction force generated by the second spring rod 32. Thus, the pull rope 16 can directly contact the fixing frame 17 when it moves, which can avoid the pull rope 16 directly sliding against the edge of the fixing frame 17 and reduce the problem of excessive wear on the pull rope 16. The second spring rod 32 can finely adjust and buffer the working angle of the pull rope 16 according to the pulling force, further improving the service life of the pull rope 16.

[0044] like Figure 1 , Figure 5 As shown, a column 4 is fixedly connected to the top of the lifting device body 1. Multiple sets of toothed grooves 41 are opened on the bottom side of the top of the push rod 15. A toothed block 42 is rotatably connected to the top of the column 4. The toothed block 42 meshes in the toothed groove 41. The toothed groove 41 can constrain the toothed block 42. A connecting block 43 is provided on the central axis side wall of the toothed block 42. In application, by setting the rotating toothed block 42 on the top of the lifting device body 1, the toothed groove 41 at the bottom of the push rod 15 will synchronously drive the toothed block 42 to rotate when the push rod 15 slides. Under the action of the two sets of teeth meshing, the middle part of the push rod 15 is supported. At the same time, the push rod 15 slides horizontally as a whole. It can support the middle part of the push rod 15, reduce the problem of bending in the middle part after long-term use due to the large length of the push rod 15 protruding to the outside. It can also reduce the problem of the top of the push rod 15 swinging and deforming when the vehicle turns, which makes it difficult to pull the output end of the two sets of first spring rods 18 synchronously.

[0045] like Figure 6 , Figure 7As shown, the outer wall of the clamping plate 110 is provided with multiple sets of first elastic elements 5. Each first elastic element 5 is sleeved with a sliding rod 51, and the end of the first elastic element 5 is fixedly connected to the end with the sliding rod 51. One end of each sliding rod 51 movably passes through the clamping plate 110 and is fixedly connected to a rubber plate 52. When the clamping plate 110 approaches the guardrail template, the rubber plate 52 will first contact the guardrail template. When the clamping plate 110 is pushed further, the rubber plate 52 will be squeezed and the overall length of the first elastic element 5 will be stretched, making deep contact with the guardrail template. The friction between the guardrail template and the clamping plate 110 can be increased through the rubber plate 52 and the first elastic element 5, further preventing the guardrail template from shifting or shaking during transportation. The elastic first elastic element 5 makes the contact between the rubber plate 52 and the guardrail template more stable.

[0046] like Figure 5 As shown, the bottom end of the second elastic element 6 is fixedly connected to the top of the connecting block 43. A counterweight ball 61 is fixedly connected to the top of the second elastic element 6, and the counterweight ball 61 is positioned close to the belt 14. The counterweight ball 61 is covered with a sponge pad 8, so that when the counterweight ball 61 approaches the belt 14, the sponge pad 8 will first contact the belt 14, reducing wear caused by impact and further extending the service life of the belt 14. When the toothed block 42 rotates under the action of the toothed groove 41, the second elastic element 6... Under the action of centrifugal force, the middle part may be stretched and deformed. As a result, during the rotation of the toothed block 42, the counterweight ball 61 may come into contact with the belt 14 and impact the belt 14. This knocks away some of the dust and other impurities attached to the belt 14, improving the cleanliness of the middle part of the belt 14 and reducing the problem of dust accumulation in the middle part of the belt 14 due to long-term outdoor use. It also reduces the corrosion cycle of the belt 14 surface. The elastic second elastic element 6 can reduce the problem of the counterweight ball 61 getting stuck during impact.

[0047] like Figure 2 As shown, a pad 7 is fixedly connected to the bottom end of the push rod 15, and a storage groove 71 matching the shape of the pad 7 is opened in the middle of the main body 1 of the lifting device. When the guardrail template approaches the push rod 15, it will first contact the pad 7. When the push rod 15 is further pressed, the pad 7 will be stored in the inner wall of the storage groove 71. The pad 7 increases the contact area between the guardrail template and the end of the push rod 15, thereby improving the stability of the push rod 15 when it slides. At the same time, the pad 7 can limit the working position of the push rod 15. When the pad 7 is stored in the storage groove 71, it can ensure that the pressure of the guardrail template on the push rod 15 stops, and it can also ensure that the push rod 15 will not detach from the main body 1 of the lifting device, reducing the need for frequent installation in the future.

[0048] like Figure 8As shown, the fixed rod 33 is rotatably sleeved with a rotating cylinder 9, and the outer side of the rotating cylinder 9 is provided with a rough surface structure. When the push rod 15 pulls the pull rope 16, the pull rope 16 will deeply squeeze the rotating cylinder 9 through the rotating cylinder 9. Under the action of the pull rope 16, the rotating cylinder 9 with a rough surface will rotate synchronously with the fixed rod 33 as the axis, which can further reduce the wear on the pull rope 16 and reduce the probability of the pull rope 16 breaking. The rough surface provided on the outer side of the rotating cylinder 9 can increase the friction force generated when it contacts the pull rope 16.

[0049] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Some parts and features of some embodiments may be included or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An auxiliary construction lifting tool suitable for forklift lifting of guardrail formwork, characterized in that, The device includes a lifting frame body, a servo motor, a screw, a hook, a push rod, and clamping plates. The lifting frame body has a frame structure, with a servo motor mounted on one side of the top. A bolt rod is rotatably connected to the output end of the servo motor, and a belt is rotatably connected to the end of the bolt rod. Another set of bolt rods is rotatably sleeved at one end of the belt. Each bolt rod is threadedly connected to a hook. A push rod is slidably connected to the inner top of the lifting frame body. The push rod has a bent structure, and its bottom end can be movably inserted into the inner side of the lifting frame body. A pull rope is connected to the top end of the push rod, and fixed frames are connected to both ends of the pull rope. The fixed frames are fixedly connected to the top two sides of the lifting frame body. A first spring rod is installed on the inner wall of each fixed frame. The ends of the pull ropes are fixedly connected to the output ends of the first spring rods, and the pull ropes pass through the corresponding ends of the fixed frames. A connecting rod is fixedly connected to the output ends of each first spring rod, and the connecting rods are polygonal in shape. Each connecting rod is connected to a clamping plate.

2. The auxiliary construction lifting tool for forklift lifting of guardrail formwork according to claim 1, characterized in that, The clamping plate and the end of the connecting rod are slidably connected. The top of the clamping plate has an inner groove. The end of the connecting rod has multiple sets of locking holes. Two sets of elastic ropes are fixed to the inner wall of the inner groove. Each elastic rope has a slider fixed to its end, and the slider is slidably connected to the inner wall of the inner groove. Each slider has a connecting frame hinged to its top. One end of each connecting frame is hinged to both ends of the same pull plate. The bottom of the pull plate has multiple sets of limiting members, which pass through the bottom of the inner groove and are slidably connected. The bottom of the pull plate has a locking pin, and the locking pin and the locking hole are shaped to match. The locking pin passes through the corresponding locking hole and penetrates the interior of the inner groove.

3. The auxiliary construction lifting tool for forklift lifting of guardrail formwork according to claim 1, characterized in that, A storage plate is fixedly connected to the inner wall of the fixed frame. The bottom of the storage plate has a hollow structure and a sliding plate is slidably connected to it. Two sets of second spring rods are fixedly connected to the inner wall of the storage plate. The ends of the second spring rods are fixedly connected to one end of the sliding plate. A cylindrical fixing rod is provided at the top of the other end of the sliding plate. The middle of the fixing rod is set to abut against the pull rope, and the top of the fixing rod has an inwardly bent structure.

4. The auxiliary construction lifting tool for forklift lifting of guardrail formwork according to claim 1, characterized in that, The top of the lifting device body is fixedly connected to a column, and multiple sets of toothed grooves are opened on the bottom side of the top of the push rod. A toothed block is rotatably connected to the top of the column. The toothed block meshes in the toothed groove, and the toothed groove can constrain the toothed block. A connecting block is provided on the central axis side wall of the toothed block.

5. The auxiliary construction lifting tool for forklift lifting of guardrail formwork according to claim 1, characterized in that, The outer wall of the clamping plate is provided with multiple sets of first elastic elements. Each of the first elastic elements is sleeved with a sliding rod, and the end of the first elastic element is fixedly connected to the end with the sliding rod. One end of each sliding rod movably passes through the clamping plate and is fixedly connected to a rubber plate.

6. The auxiliary construction lifting tool for forklift lifting of guardrail formwork according to claim 4, characterized in that, The bottom end of the second elastic element is fixedly connected to the top of the connecting block, and a counterweight ball is fixedly connected to the top of the second elastic element. The counterweight ball is located near the belt and is covered with a sponge pad.

7. The auxiliary construction lifting tool for forklift lifting of guardrail formwork according to claim 1, characterized in that, A pad is fixedly connected to the bottom end of the push rod, and a storage groove matching the shape of the pad is opened in the middle of the main body of the lifting device.

8. The auxiliary construction lifting tool for forklift lifting of guardrail formwork according to claim 3, characterized in that, The fixed rod is rotatably sleeved with a rotating cylinder, and the outer side of the rotating cylinder is provided with a rough surface structure.

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