A standardized stirrup lifting tool

Abstract

The invention discloses a standardized stirrup lifting tool in the technical field of stirrup lifting, comprising a trolley, a lifting ring and a motor, and is characterized in that: it also comprises a fixed platform, a telescopic vertical pole, an oil storage tank and a main oil pipe; a plurality of the lifting rings are fixedly mounted on both sides of the trolley, a plurality of the fixed platforms are arranged and mounted above the trolley, the telescopic vertical pole is vertically mounted in the middle of the fixed platform, the main oil pipe is fixedly mounted at the lower end of the fixed platform, and the main oil pipes are sealed and connected to each other, the driving mechanism is mounted on the trolley, and the driving mechanism is sealed and fixedly connected to the main oil pipes on both sides; the oil storage tanks equal to the fixed platforms are fixedly connected to the fixed platforms respectively, and the oil storage tanks are connected to the main oil pipes on the corresponding fixed platforms, so that the height of the vertical pole changes with the storage height of the stirrup, thereby reducing the total distance of lifting and lowering the stirrup, alleviating the physical exertion of workers during operation, and reducing the risk of stirrups falling from their hands and injuring people.

Description

Technical Field

[0001] The invention relates to the technical field of stirrup hoisting, in particular to a standardized stirrup hoisting tool. Background Art

[0002] During construction, stirrups usually need to be classified, stacked, lifted, and transported in order to meet the needs of steel bar binding in different construction locations.

[0003] In the invention case of stirrup lifting tool disclosed in the prior art, the Chinese patent with invention patent application number CN201920643460.4, the fixed frame is placed within the range of the positioning angle steel on the trolley, the finished stirrups can be sleeved on the vertical poles on the fixed frame, and the trolley can move the fixed frame with stirrups to the stirrup stacking area for hoisting, thus forming a stirrup lifting tool. It has the characteristics of reasonable design, simple structure, easy operation, high efficiency and speed, and is particularly suitable for hoisting operations of stirrups of beams and columns in cast-in-place concrete structures.

[0004] This invention still has the following disadvantages:

[0005] 1. When the stirrups are removed from the poles, they are easily affected by the stirrups on the adjacent poles, especially when only stirrups of a specific specification on a certain pole are needed. As the stirrups are continuously taken out, the removal process is more seriously affected by the stirrups on the adjacent poles. It is not uncommon that the stirrups to be taken out are directly pressed by the stirrups on the adjacent poles and cannot be taken out directly. If the spacing between the poles is increased directly on the basis of the original plan, the size of the tool will be greatly increased, which will not only reduce the space utilization rate, but also increase the difficulty of transportation.

[0006] 2. Since the height of the vertical pole is fixed, during the loading and unloading process, workers are always required to lift the stirrups over the vertical pole and then lower them smoothly. The whole process greatly increases the physical exertion of the workers and also increases the risk of stirrups falling and injuring people during the lifting and lowering of the stirrups.

[0007] Based on this, the present invention designs a standardized stirrup lifting tool to solve the above problems. Summary of the invention

[0008] The object of the present invention is to provide a standardized stirrup lifting tool to solve the following shortcomings mentioned in the above background technology:

[0009] 1. When the stirrups are removed from the poles, they are easily affected by the stirrups on the adjacent poles, especially when only stirrups of a specific specification on a certain pole are needed. As the stirrups are continuously taken out, the removal process is more seriously affected by the stirrups on the adjacent poles. It is not uncommon that the stirrups to be taken out are directly pressed by the stirrups on the adjacent poles and cannot be taken out directly. If the spacing between the poles is increased directly on the basis of the original plan, the size of the tool will be greatly increased, which will not only reduce the space utilization rate, but also increase the difficulty of transportation.

[0010] 2. Since the height of the vertical pole is fixed, during the loading and unloading process, workers are always required to lift the stirrups over the vertical pole and then lower them smoothly. The whole process greatly increases the physical exertion of the workers and also increases the risk of stirrups falling and injuring people during the lifting and lowering of the stirrups.

[0011] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a standardized stirrup lifting tool, comprising a trolley, a lifting ring and a motor, characterized in that it also comprises a fixed platform, a telescopic vertical rod, an oil storage tank and a main oil pipe; a plurality of the lifting rings are fixedly mounted on both sides of the trolley, a plurality of the fixed platforms are arranged and mounted above the trolley, the telescopic vertical rod is vertically mounted in the middle position of the fixed platform, the main oil pipe is fixedly mounted at the lower end of the fixed platform, and the main oil pipes are sealed and connected to each other, a driving mechanism is mounted on the trolley, and the driving mechanism is sealed and fixedly connected to the main oil pipes at the front and rear ends; an oil storage tank is correspondingly arranged at the lower end of each fixed platform, and the oil storage tank is connected to the main oil pipe on the corresponding fixed platform.

[0012] As a further solution of the present invention, the fixed table includes a placing table, a through slot is opened through the middle of the placing table, a connecting column is fixedly connected to the lower end of the placing table, the lower end of the connecting column is fixedly connected to the connecting table, a telescopic vertical rod is fixedly installed on the upper end of the connecting table, the telescopic vertical rod passes through the through slot and extends to the top of the placing table, and an oil hole is opened on the connecting table coaxially with the telescopic vertical rod.

[0013] As a further solution of the present invention, the telescopic upright pole includes a plurality of layers of joints, the lower end of the outermost layer of the plurality of layers of joints is fixedly connected to the upper end of the connecting platform, the innermost layer of the plurality of layers of joints is slidably connected to a rod tip, a first oil valve is fixedly installed inside the rod tip, a second oil valve is fixedly connected to the lower end of the first oil valve, a corrugated tube is fixedly connected to the lower end of the second oil valve, the lower end of the corrugated tube is fixedly connected to the connecting platform and is coaxially arranged with the oil hole;

[0014] Trigger rods are installed on both sides of the pole tip, and the trigger rods are used to control the on and off of the first oil valve and the second oil valve; the second oil valve is a one-way valve, and the flow direction is from the inner cavity of the telescopic vertical pole to the inner cavity of the corrugated tube; the corrugated tube is used to connect the oil hole and the oil valve, and its high elasticity is utilized to improve space utilization, thereby reducing the bloatedness of the equipment and further reducing the difficulty of transporting stirrups. At the same time, as a mature and common component, it reduces the difficulty of purchasing and making equipment components.

[0015] As a further solution of the present invention, the trigger rod includes a rotating shaft, and the rotating shaft rotation seal is installed on the side wall of the pole tip, and a torsion spring is arranged at the connection; the rotating shaft takes the part on one side of the outer wall of the pole tip as a reference and can only rotate upward; the rotating shaft seal is slidably connected with a connecting rod, and the connecting rod is fixedly connected with a fan-shaped ring at one end inside the pole tip, and the connecting rod is fixedly connected with a second wedge block at one end outside the pole tip, and the second wedge block is elastically slidably connected with the first wedge block, and the wedge surfaces of the first wedge block and the second wedge block face upward; the trigger rod is set as a sensor of the stock of stirrups, which is relatively common electronic sensing elements. Firstly, it has a simple mechanical structure, low cost, is not easy to be damaged, and is more suitable for the complex working environment of the construction site. Secondly, it is easy to repair when damaged, saving work hours; finally, when taking high-density materials such as stirrups, it is easy to fall off from the hand when it is just taken and has not been adjusted to the optimal extraction position. When the stirrups fall from the hand, the trigger rod can be used as a protective device to prevent the stirrups from falling further and causing personal injury.

[0016] As a further solution of the present invention, first plugs are installed on both sides of the first oil valve for elastic sliding relative to each other, and the elastic force is much smaller than the elastic force between the first wedge block and the second wedge block (so that when the first wedge block and the second wedge block are relatively compressed, the first plug will be driven preferentially); a first connecting groove is penetrated through the first plug, and the upper and lower first plugs are in sliding contact, and in a free state, the two first connecting grooves are offset and not connected to each other, and a rotating rod is fixedly installed on one end of the first plug relative to its own first connecting groove, which is closer to the first connecting groove on the other first plug, and the rotating rod slides closely against the inner wall of the fan-shaped ring.

[0017] As a further solution of the present invention, a one-way valve is fixedly installed on the side wall of the second oil valve, and second plugs are elastically installed on both sides of the second oil valve below the one-way valve so as to slide relatively upward and downward. A second connecting groove is penetrated through the second plug at a position close to the inner wall of the second oil valve on the same side, and a connecting rope is fixedly connected on the other side. The connecting rope is fixedly connected to the fan-shaped ring, and the connecting rope is elastic, and the elastic force is greater than the elastic force between the second plug and the second oil valve (so that when the connecting rope is stretched, the second plug will be pulled preferentially).

[0018] As a further solution of the present invention, a spring is fixedly installed on the upper end of the inner wall of the oil storage tank, and a push plate is fixedly installed on the lower end of the spring. The push plate is slidingly and sealingly connected to the inner wall of the oil storage tank. A connecting pipe is penetrated through the side wall of the oil storage tank, and the connecting pipe is penetrated and connected to the main oil pipe. A limiting boss is fixedly provided on the inner wall of the oil storage tank above the connecting pipe.

[0019] As a further solution of the present invention, adjacent main oil pipes are commonly connected with connecting oil pipes in a sliding and sealing manner; the driving mechanism includes a motor, the motor is fixedly installed on the trolley, telescopic shafts are installed at both ends of the motor, the telescopic shafts are fixedly connected with connecting plates, and the connecting plates are respectively fixedly and sealingly connected to one end of the main oil pipes located at both ends of the trolley close to the end of the trolley.

[0020] As a further solution of the present invention, the lower end surfaces of the placement table are transversely fixedly connected with transverse support rods, and the transverse support rods are slidably connected with connecting sliding rods; since the main oil pipe and the connecting oil pipe need to be filled with hydraulic oil, their compressive strength is limited. When the gravity of the fixed platform directly acts on them, they will be deformed and damaged, and then the equipment will fail or even the fixed platform will tilt and fall off. Therefore, transverse support rods are provided to bear the downward pressure of the fixed platform, reduce the load on the main oil pipe and the connecting oil pipe, avoid their deformation, improve the stability of the equipment, and enable the equipment to better reduce the workload during the loading and unloading of stirrups.

[0021] Working principle: The distance between the ends of the trigger rods on both sides of the telescopic pole is greater than the inner width of the stirrups; the telescopic pole, corrugated tube, oil cavity, main oil pipe and connecting oil pipe are filled with hydraulic oil;

[0022] When working, first install the stirrups on the telescopic pole. Figure 6 ) The telescopic pole is in a compressed state, and the spring in the oil storage tank is in the maximum state. The elastic force of the spring makes the push plate tend to slide downward, and then the hydraulic oil in the oil chamber tends to flow into the main oil pipe. Furthermore, the hydraulic oil in the main oil pipe tends to flow into the telescopic pole through the corrugated tube. At this time, since the inner cavity from the second oil valve to the telescopic pole is a one-way valve, the flow direction is from the inner cavity of the telescopic pole to the inner cavity of the corrugated tube. (such as Figure 5 ) The second connecting grooves on the two second plugs between the second oil valve and the first oil valve overlap with the second oil valve channel, and the first oil valve is blocked by the two first plugs at this time (the first connecting grooves on the two first plugs are misaligned with each other, so that the first plugs are blocked by each other, and the hydraulic oil cannot flow through the first plugs);

[0023] During the process of installing the stirrups, when the stirrups pass through the trigger rod, they will press the wedge surface of the trigger rod downward, causing the trigger rod to retract toward the telescopic pole, and then the trigger rod will squeeze the first plug piece, so that the first connecting grooves on the first plug piece are aligned with each other, and then the inner cavity of the corrugated tube and the inner cavity of the telescopic pole are connected. At this time, the hydraulic oil in the oil cavity flows into the inner cavity of the telescopic pole through the main oil pipe and the corrugated tube under the push of the push plate. Further, the telescopic pole is stretched open by the flowing hydraulic oil, and the telescopic pole is extended. Then, after the stirrups pass over the trigger rod, the trigger rod rebounds, and the first plug piece is reset under the elastic force of the elastic member at the connection with the first oil valve, and the first oil valve is closed again, and the telescopic pole stops extending.

[0024] When the stirrups are continuously stacked on the placement table and reach the height of the trigger rod, the first oil valve is continuously opened, hydraulic oil is continuously injected into the telescopic vertical rod, and the telescopic vertical rod is continuously extended until the height of the trigger rod is the same as the stirrups (it should be noted that when the stacked height of the stirrups is less than the trigger rod, the process of the stirrups passing the trigger rod is that after the trigger rod retracts, the stirrups will rebound after passing over the trigger rod. The opening time of the first oil valve is relatively short. Therefore, in the process of the stirrups being stacked to the height of the trigger rod, the extension height of the telescopic vertical rod is relatively small, which has little impact on the entire process of installing the stirrups, and has no adverse effects);

[0025] After the installation of stirrups is completed, the tower crane wire rope is passed through the lifting ring and tied, and then hoisted to the use area for construction; at this time, the motor is turned on, and the motor drives the telescopic shaft to move at both ends of the equipment, thereby driving the main oil pipe to expand to both ends of the equipment, and then the fixed platform is expanded to both ends of the equipment, so as to increase the spacing between stirrups on different fixed platforms and facilitate unloading;

[0026] As the main oil pipes are extended to both ends of the equipment, the volume of the cavity formed by the multiple main oil pipes and the connecting oil pipes increases, thereby forming a negative pressure. Further, a suction force is formed in the oil hole and the connecting pipe toward the cavity volume, thereby forming a trend of sucking hydraulic oil from the oil storage tank and the telescopic pole. The limit boss in the oil storage tank will limit the downward movement of the push plate, so that the hydraulic oil in the oil storage tank cannot be used as the main source to compensate for the lack of hydraulic oil in the main oil pipes and the connecting oil pipes; (such as Figure 5) At this time, the first oil valve is closed, and the second oil valve allows the hydraulic oil in the telescopic pole to flow to the main oil pipe, so the hydraulic oil in the telescopic pole is reduced, the telescopic pole is shortened, and the trigger rod moves downward. When it touches the upper end stirrup and continues to move downward, the trigger rod squeezes the stirrup and then rotates upward (the center of the arc track of the fan-shaped ring is concentric with the axis of the shaft. Therefore, during the rotation of the trigger rod, the distance from the contact position of the fan-shaped ring and the first plug to the center of the arc track remains unchanged, so the first plug will not be squeezed and the first oil valve remains closed). Furthermore, the fan-shaped ring will pull the connecting rope, and the connecting rope will pull the second plug, so that the second connecting groove on the second plug is separated from the inner cavity of the second oil valve, so that the second oil valve is blocked, and the hydraulic oil channel from the telescopic pole to the main oil pipe is blocked, and the hydraulic oil in the telescopic pole stops flowing out, and the telescopic pole stops shortening, until the stirrup at the trigger rod is removed, the trigger rod is reset, the second oil valve is reopened, the hydraulic oil in the telescopic pole continues to flow out, and the telescopic pole continues to shorten; this is repeated to achieve the effect of removing the stirrup a little and shortening the telescopic pole a little;

[0027] Finally, after the stirrups are unloaded, the control drive mechanism will reconnect the fixed platform, the main oil pipe and the connecting oil pipe will retract, the inner cavity will be reduced, and the hydraulic oil inside will be squeezed out. Since the first oil valve is closed, the hydraulic oil cannot flow into the telescopic pole (the principle is the same as above), so the hydraulic oil can only flow into the oil storage tank, and then the oil cavity capacity becomes larger, the push plate moves up, the spring is compressed, and the equipment returns to its initial state to be used again.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention uses the storage height of the stirrups to trigger the trigger rod through the coordination among hydraulic oil, spring, trigger rod and oil valve, and then controls the height of the vertical pole to increase with the increase of the storage height of the stirrups when storing the stirrups. When the stirrups are taken, the motor is controlled to open the vertical pole spacing and form negative pressure inside the vertical pole, so that the vertical pole has a tendency to shorten downward, and then the height of the vertical pole is shortened as the remaining height of the stirrups decreases; the total distance of lifting and lowering the stirrups is reduced, the physical consumption of workers during operation is reduced, and the risk of stirrups falling from their hands and injuring people is reduced; secondly, the driving mechanism is used to control the vertical pole spacing, so that the vertical pole spacing is minimized during the loading and transportation process, and the spacing becomes larger during the unloading process, which greatly reduces the difficulty of unloading and enhances the flexibility of unloading while ensuring the space utilization rate.

[0030] 2. A trigger rod is set as a sensor for the amount of stirrups. Compared with common electronic sensing elements, it has a simple mechanical structure, low cost, is not easy to damage, and is more adaptable to the complex working environment of the construction site. Secondly, it is easy to repair when damaged, saving man-hours. Finally, when taking high-density materials such as stirrups, they are easy to fall out of the hand when they are just taken and have not been adjusted to the best extraction position. When the stirrups fall from the hand, the trigger rod can serve as a protective device to prevent the stirrups from falling further and causing personal injury.

[0031] 3. Since the main oil pipe and the connecting oil pipe need to be filled with hydraulic oil, their compressive strength is limited. When the gravity of the fixed platform acts directly on them, they will be deformed and damaged, which will cause the equipment to fail or even the fixed platform to tilt and fall off. Therefore, a transverse support rod is set to bear the downward pressure of the fixed platform, reduce the load on the main oil pipe and the connecting oil pipe, avoid their deformation, improve the stability of the equipment, and enable the equipment to better reduce the workload during the loading and unloading of stirrups. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic cross-sectional view of the overall structure of the transverse support rod of the present invention;

[0035] Figure 3 It is a schematic cross-sectional view of the overall structure of the telescopic upright pole of the present invention;

[0036] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0037] Figure 5 for Figure 3 The enlarged structural diagram at B in the middle;

[0038] Figure 6 It is a side section diagram of the fixed platform;

[0039] Figure 7 for Figure 6 The enlarged structural diagram at C in the middle;

[0040] Figure 8 It is a schematic diagram of the overall structure after removing the placement table 2-1.

[0041] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0042] Trolley 1, lifting ring 1-1, slide 1-2, fixed platform 2, placing platform 2-1, through slot 2-2, connecting platform 2-3, connecting column 2-4, sliding rod 2-5, supporting rod 2-6, oil hole 2-7, telescopic vertical rod 3, pole tip 3-1, multi-layer matching section 3-2, trigger rod 3-3, first wedge block 3-3-1, second wedge block 3-3-2, connecting rod 3-3-3, rotating shaft 3-3-4, fan-shaped ring 3-3-5, first oil valve 3-4, first plug 3-4-1, first Connecting groove 3-4-2, rotating rod 3-4-3, second oil valve 3-5, second plug 3-5-1, second connecting groove 3-5-2, connecting rope 3-5-3, one-way valve 3-5-4, corrugated tube 3-6, driving mechanism 4, motor 4-1, telescopic shaft 4-2, connecting plate 4-3, oil storage tank 5, oil chamber 5-1, spring 5-2, push plate 5-3, limiting boss 5-4, connecting pipe 5-5, main oil pipe 6, connecting oil pipe 6-1, transverse support rod 7, connecting slide rod 7-1. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0044] See also Figure 1-8 The present invention provides a technical solution: a standardized stirrup lifting tool, comprising a trolley 1, a lifting ring 1-1 and a motor 4-1, characterized in that it also comprises a fixed platform 2, a telescopic vertical rod 3, an oil storage tank 5 and a main oil pipe 6; a plurality of the lifting rings 1-1 are fixedly installed on both sides of the trolley 1, a plurality of the fixed platforms 2 are arranged and installed above the trolley 1, the telescopic vertical rod 3 is vertically installed in the middle position of the fixed platform 2, the main oil pipe 6 is fixedly installed at the lower end of the fixed platform 2, and the main oil pipes 6 are sealed and connected to each other, a driving mechanism 4 is installed on the trolley 1, and the driving mechanism 4 is sealed and fixedly connected to the main oil pipes 6 located at the front and rear ends; an oil storage tank 5 is correspondingly arranged at the lower end of each fixed platform 2, and the oil storage tank 5 is connected to the main oil pipe 6 on the corresponding fixed platform 2.

[0045] As a further solution of the present invention, the fixed table 2 includes a placing table 2-1, a through slot 2-2 is opened in the middle of the placing table 2-1, a connecting column 2-4 is fixedly connected to the lower end of the placing table 2-1, a connecting table 2-3 is fixedly connected to the lower end of the connecting column 2-4, a telescopic vertical rod 3 is fixedly installed on the upper end of the connecting table 2-3, the telescopic vertical rod 3 passes through the through slot 2-2 and extends to the top of the placing table 2-1, and an oil hole 2-7 is opened on the connecting table 2-3 coaxially with the telescopic vertical rod 3.

[0046] As a further solution of the present invention, the telescopic vertical rod 3 includes a multi-layer joint 3-2, the lower end of the outermost joint of the multi-layer joint 3-2 is fixedly connected to the upper end of the connecting platform 2-3, the innermost side of the multi-layer joint 3-2 is slidably connected to the rod tip 3-1, a first oil valve 3-4 is fixedly installed inside the rod tip 3-1, the lower end of the first oil valve 3-4 is fixedly connected to the second oil valve 3-5, the lower end of the second oil valve 3-5 is fixedly connected to the corrugated tube 3-6, the lower end of the corrugated tube 3-6 is fixedly connected to the connecting platform 2-3 and is coaxially arranged with the oil hole 2-7;

[0047] A trigger rod 3-3 is installed on both sides of the pole tip 3-1, and the trigger rod 3-3 is used to control the on and off of the first oil valve 3-4 and the second oil valve 3-5; the second oil valve 3-5 is a one-way valve, and the flow direction is from the inner cavity of the telescopic vertical rod 3 to the inner cavity of the corrugated tube 3-6; the corrugated tube 3-6 is used to connect the oil hole 2-7 and the oil valve, and its high elasticity is utilized to improve space utilization, thereby reducing the bloatedness of the equipment, further reducing the difficulty of transporting stirrups, and at the same time, as a mature and common component, it reduces the difficulty of purchasing and making equipment components.

[0048] As a further solution of the present invention, the trigger rod 3-3 includes a rotating shaft 3-3-4, and the rotating shaft 3-3-4 is rotatably sealed and installed on the side wall of the pole tip 3-1, and a torsion spring is provided at the connection; the rotating shaft 3-3-4 takes the part on one side of the outer wall of the pole tip 3-1 as a reference, and can only rotate upward; the rotating shaft 3-3-4 is sealingly and slidably connected with a connecting rod 3-3-3, and the connecting rod 3-3-3 is fixedly connected with a fan-shaped ring 3-3-5 at one end inside the pole tip 3-1, and the connecting rod 3-3-3 is fixedly connected with a second wedge block 3-3-2 at one end outside the pole tip 3-1, and the second wedge block 3-3-2 elastically slides A first wedge block 3-3-1 is dynamically connected, and the wedge surfaces of the first wedge block 3-3-1 and the second wedge block 3-3-2 face upwards; a trigger rod 3-3 is provided as a sensor for the amount of stirrups. Compared with common electronic sensing elements, it has a simple mechanical structure, low cost, is not easy to be damaged, and is more adaptable to the complex working environment of the construction site; secondly, it is easy to repair when damaged, saving man-hours; finally, when taking a high-density material such as stirrups, it is easy to fall out of the hand when it is just taken and has not been adjusted to the best extraction position. When the stirrups fall from the hand, the trigger rod 3-3 can be used as a protective device to prevent the stirrups from falling further and causing personal injury.

[0049] As a further scheme of the present invention, first plugs 3-4-1 are elastically and relatively slidably installed on both sides of the first oil valve 3-4, and the elastic force is much smaller than the elastic force between the first wedge block 3-3-1 and the second wedge block 3-3-2 (so that when the first wedge block 3-3-1 and the second wedge block 3-3-2 are relatively compressed, the first plug 3-4-1 will be driven preferentially); a first connecting groove 3-4-2 is penetrated through the first plug 3-4-1, and the upper and lower first plugs 3-4-1 are in sliding contact, and in a free state, the two first connecting grooves 3-4-2 are offset and not connected to each other, and a rotating rod 3-4-3 is fixedly installed on one end of the first plug 3-4-1 relative to its own first connecting groove 3-4-2, which is closer to the first connecting groove 3-4-2 on the other first plug 3-4-1, and the rotating rod 3-4-3 slides tightly against the inner wall of the fan ring 3-3-5.

[0050] As a further solution of the present invention, a one-way valve 3-5-4 is fixedly installed on the side wall of the second oil valve 3-5, and a second plug 3-5-1 is elastically installed on both sides of the second oil valve 3-5 below the one-way valve 3-5-4 so as to slide relatively upward and downward. A second connecting groove 3-5-2 is penetrated through the inner wall of the second oil valve 3-5 on the same side of the second plug 3-5-1, and a connecting rope 3-5-3 is fixedly connected on the other side. The connecting rope 3-5-3 is fixedly connected to the fan-shaped ring 3-3-5, and the connecting rope 3-5-3 is elastic, and the elastic force is greater than the elastic force between the second plug 3-5-1 and the second oil valve 3-5 (so that when the connecting rope 3-5-3 is stretched, the second plug 3-5-1 will be pulled preferentially).

[0051] As a further solution of the present invention, a spring 5-2 is fixedly installed on the upper end of the inner wall of the oil storage tank 5, and a push plate 5-3 is fixedly installed on the lower end of the spring 5-2. The push plate 5-3 is slidingly and sealingly connected to the inner wall of the oil storage tank 5. A connecting pipe 5-5 is penetrated and connected to the side wall of the oil storage tank 5. The connecting pipe 5-5 is penetrated and connected to the main oil pipe 6. A limiting boss 5-4 is fixedly provided on the inner wall of the oil storage tank 5 above the connecting pipe 5-5.

[0052] As a further solution of the present invention, adjacent main oil pipes 6 are commonly slidably and sealedly connected with connecting oil pipes 6-1; the driving mechanism 4 includes a motor 4-1, and the motor 4-1 is fixedly installed on the trolley 1. Telescopic shafts 4-2 are installed at both ends of the motor 4-1, and the telescopic shafts 4-2 are fixedly connected with connecting plates 4-3. The connecting plates 4-3 are respectively fixedly and sealedly connected to one end of the main oil pipes 6 located at both ends of the trolley 1 close to the end of the trolley 1.

[0053] As a further solution of the present invention, the lower end surface of the placement table 2-1 is laterally fixedly connected with a transverse support rod 7, and the transverse support rods 7 are slidably connected with a connecting slide rod 7-1; since the main oil pipe 6 and the connecting oil pipe 6-1 need to be filled with hydraulic oil, their compressive strength is limited. When the gravity of the fixed platform 2 directly acts on them, it will cause them to deform and damage, and then the equipment will fail or even the fixed platform 2 will tilt and fall off. Therefore, a transverse support rod 7 is provided to bear the downward pressure of the fixed platform 2, reduce the load on the main oil pipe 6 and the connecting oil pipe 6-1, avoid their deformation, improve the stability of the equipment, and enable the equipment to better reduce the workload during the loading and unloading of stirrups.

[0054] Working principle: The distance between the ends of the trigger rods 3-3 on both sides of the telescopic pole 3 is greater than the inner width of the stirrups; the telescopic pole 3, the corrugated tube 3-6, the oil chamber 5-1, the main oil pipe 6 and the connecting oil pipe 6-1 are filled with hydraulic oil;

[0055] When working, first put stirrups on the telescopic pole 3. Figure 6) The telescopic pole 3 is in a compressed state, and the spring 5-2 in the oil storage tank 5 is in a maximum compression state. The elastic force of the spring 5-2 causes the push plate 5-3 to slide downward, thereby causing the hydraulic oil in the oil chamber 5-1 to flow into the main oil pipe 6. Furthermore, the hydraulic oil in the main oil pipe 6 has a tendency to flow into the telescopic pole 3 through the corrugated tube 3-6. At this time, since the inner cavity of the second oil valve 3-5 to the telescopic pole 3 is a one-way valve, the flow direction is from the inner cavity of the telescopic pole 3 to the inner cavity of the corrugated tube 3-6. (As shown in FIG. Figure 5 ) The second connecting grooves 3-5-2 on the two second plugs 3-5-1 between the second oil valve 3-5 and the first oil valve 3-4 overlap with the second oil valve 3-5 channel, and the first oil valve 3-4 is blocked by the two first plugs 3-4-1 at this time (the first connecting grooves 3-4-2 on the two first plugs 3-4-1 are misaligned with each other, so that the first plugs 3-4-1 are blocked with each other, and the hydraulic oil cannot flow through the first plugs 3-4-1);

[0056] During the process of installing the stirrups, when the stirrups pass through the trigger rod 3-3, they will squeeze the wedge surface of the trigger rod 3-3 downward, causing the trigger rod 3-3 to retract toward the telescopic upright pole 3, and then the trigger rod 3-3 squeezes the first plug piece 3-4-1, so that the first connecting grooves 3-4-2 on the first plug piece 3-4-1 are aligned with each other, thereby connecting the inner cavity of the corrugated tube 3-6 with the inner cavity of the telescopic upright pole 3. At this time, the hydraulic oil in the oil chamber 5-1 flows into the inner cavity of the telescopic upright pole 3 through the main oil pipe 6 and the corrugated tube 3-6 under the push of the push plate 5-3. Further, the telescopic upright pole 3 is stretched open by the flowing hydraulic oil, and the telescopic upright pole 3 is extended. Then, after the stirrups pass over the trigger rod 3-3, the trigger rod 3-3 rebounds, and the first plug piece 3-4-1 is reset under the elastic force of the elastic member at the connection with the first oil valve 3-4. The first oil valve 3-4 is closed again, and the telescopic upright pole 3 stops extending.

[0057] When the stirrups are continuously stacked on the placement table 2-1 and reach the height of the trigger rod 3-3, the first oil valve 3-4 is continuously opened, and hydraulic oil is continuously injected into the telescopic vertical rod 3, and the telescopic vertical rod 3 is continuously extended until the trigger rod 3-3 is as high as the stirrups (it should be noted that when the stacked height of the stirrups is less than the trigger rod 3-3, the process of the stirrups passing through the trigger rod 3-3 is that after the trigger rod 3-3 retracts, the stirrups will rebound after passing over the trigger rod 3-3, and the opening time of the first oil valve 3-4 is relatively short. Therefore, in the process of the stirrups being stacked to the height of the trigger rod 3-3, the extension height of the telescopic vertical rod 3 is relatively small, which has little impact on the entire process of installing the stirrups, and has no adverse effects);

[0058] After the installation of stirrups is completed, the tower crane wire rope is passed through the lifting ring 1-1 and tied, and then hoisted to the use area for construction; at this time, the motor 4-1 is turned on, and the motor 4-1 drives the telescopic shaft 4-2 to move toward the two ends of the equipment, thereby driving the main oil pipe 6 to expand toward the two ends of the equipment, and then the fixed platform 2 is expanded toward the two ends of the equipment, so as to increase the spacing between the stirrups on different fixed platforms 2, which is convenient for unloading;

[0059] As the main oil pipe 6 is extended to both ends of the equipment, the volume of the cavity formed by the multiple main oil pipes 6 and the connecting oil pipe 6-1 increases, thereby forming a negative pressure. Further, a suction force is formed in the oil hole 2-7 and the connecting pipe 5-5 toward the cavity volume, thereby forming a trend of sucking hydraulic oil from the oil storage tank 5 and the telescopic pole 3. The limit boss 5-4 in the oil storage tank 5 will limit the downward movement of the push plate 5-3, so that the hydraulic oil in the oil storage tank 5 cannot be used as the main source of compensation for the lack of hydraulic oil in the main oil pipe 6 and the connecting oil pipe 6-1; (such as Figure 5 ) At this time, the first oil valve 3-4 is closed, and the second oil valve 3-5 allows the hydraulic oil in the telescopic rod 3 to flow to the main oil pipe 6, so the hydraulic oil in the telescopic rod 3 is reduced, the telescopic rod 3 is shortened, and the trigger rod 3-3 moves downward. When it touches the upper end stirrup and continues to move downward, the trigger rod 3-3 squeezes the stirrup and then rotates upward (the center of the arc trajectory of the sector ring 3-3-5 is concentric with the axis of the rotating shaft 3-3-4. Therefore, during the rotation of the trigger rod 3-3, the distance from the contact position between the sector ring 3-3-5 and the first plug 3-4-1 to the center of the arc trajectory remains unchanged, so the first plug 3-4-1 will not be squeezed, and the first oil valve 3-4 remains closed). The fan-shaped ring 3-3-5 will pull the connecting rope 3-5-3, and the connecting rope 3-5-3 will pull the second plug 3-5-1, so that the second connecting groove 3-5-2 on the second plug 3-5-1 is separated from the inner cavity of the second oil valve 3-5, so that the second oil valve 3-5 is blocked, and the hydraulic oil channel from the telescopic pole 3 to the main oil pipe 6 is blocked, and the hydraulic oil in the telescopic pole 3 stops flowing out, and the telescopic pole 3 stops shortening, until the stirrup at the trigger rod 3-3 is removed, the trigger rod 3-3 is reset, and the second oil valve 3-5 is reopened, the hydraulic oil in the telescopic pole 3 continues to flow out, and the telescopic pole 3 continues to shorten; this is repeated to achieve the effect of removing the stirrup a little and shortening the telescopic pole 3 a little;

[0060] Finally, after the stirrups are unloaded, the control drive mechanism 4 reconnects the fixed platform 2, the main oil pipe 6 and the connecting oil pipe 6-1 retract, the inner cavity thereof is reduced, and the hydraulic oil therein is squeezed outward, wherein since the first oil valve 3-4 is closed, the hydraulic oil cannot flow into the telescopic vertical rod 3 (the principle is the same as above), so the hydraulic oil can only flow into the oil storage tank 5, and then the oil cavity 5-1 becomes larger, the push plate 5-3 moves up, the spring 5-2 is compressed, and the equipment returns to its initial state to be used again.

Claims

1. A standardized stirrup lifting tool, comprising a trolley (1), a lifting ring (1-1) and a motor (4-1), characterized in that: It also includes a fixed platform (2), a telescopic vertical rod (3), an oil storage tank (5) and a main oil pipe (6); a plurality of the lifting rings (1-1) are fixedly installed on both sides of the trolley (1); a plurality of the fixed platforms (2) are arranged and installed above the trolley (1); the telescopic vertical rod (3) is vertically installed in the middle of the fixed platform (2); the main oil pipe (6) is fixedly installed at the lower end of the fixed platform (2); and the main oil pipes (6) are sealed and connected to each other; a driving mechanism (4) is installed on the trolley (1); and the driving mechanism (4) is sealed and fixedly connected to the main oil pipes (6) at the front and rear ends; an oil storage tank (5) is correspondingly arranged at the lower end of each fixed platform (2); and the oil storage tank (5) is connected to the main oil pipe (6) on the corresponding fixed platform (2); The fixed platform (2) comprises a placing platform (2-1), a through slot (2-2) is provided through the middle of the placing platform (2-1), a connecting column (2-4) is fixedly connected to the lower end of the placing platform (2-1), the lower end of the connecting column (2-4) is fixedly connected to the connecting platform (2-3), a telescopic vertical rod (3) is fixedly installed on the upper end of the connecting platform (2-3), the telescopic vertical rod (3) passes through the through slot (2-2) and extends to the top of the placing platform (2-1), and an oil hole (2-7) is provided on the connecting platform (2-3) coaxially with the telescopic vertical rod (3); The telescopic upright pole (3) comprises a plurality of layers of joints (3-2), the lower end of the outermost layer of the plurality of layers of joints (3-2) is fixedly connected to the upper end of the connecting platform (2-3), the innermost layer of the plurality of layers of joints (3-2) is slidably connected to a rod tip (3-1), a first oil valve (3-4) is fixedly installed inside the rod tip (3-1), the lower end of the first oil valve (3-4) is fixedly connected to a second oil valve (3-5), the lower end of the second oil valve (3-5) is fixedly connected to a corrugated tube (3-6), the lower end of the corrugated tube (3-6) is fixedly connected to the connecting platform (2-3) and is coaxially arranged with the oil hole (2-7); A trigger rod (3-3) is installed on both sides of the rod tip (3-1), and the trigger rod (3-3) is used to control the on and off of the first oil valve (3-4) and the second oil valve (3-5); the second oil valve (3-5) is a one-way valve, and the flow direction is from the inner cavity of the telescopic vertical rod (3) to the inner cavity of the corrugated tube (3-6); The trigger rod (3-3) comprises a rotating shaft (3-3-4), the rotating shaft (3-3-4) is rotationally sealed and installed on the side wall of the pole tip (3-1), and a torsion spring is arranged at the connection; the rotating shaft (3-3-4) can only rotate upwards with a part of one side of the outer wall of the pole tip (3-1) as a reference; the rotating shaft (3-3-4) is sealingly and slidably connected to a connecting rod (3-3-3), one end of the connecting rod (3-3-3) inside the pole tip (3-1) is fixedly connected to a fan-shaped ring (3-3-5), one end of the connecting rod (3-3-3) outside the pole tip (3-1) is fixedly connected to a second wedge block (3-3-2), the second wedge block (3-3-2) is elastically and slidably connected to the first wedge block (3-3-1), and the wedge surfaces of the first wedge block (3-3-1) and the second wedge block (3-3-2) face upwards; A one-way valve (3-5-4) is fixedly connected to the side wall of the second oil valve (3-5); second plugs (3-5-1) are elastically slidably installed on both sides of the second oil valve (3-5) below the one-way valve (3-5-4); a second connecting groove (3-5-2) is penetrated through the inner wall of the second oil valve (3-5) on the same side of the second plug (3-5-1); and a connecting rope (3-5-3) is fixedly connected to the other side; the connecting rope (3-5-3) is fixedly connected to the fan-shaped ring (3-3-5); the connecting rope (3-5-3) is elastic, and the elastic force is greater than the elastic force between the second plug (3-5-1) and the second oil valve (3-5); A spring (5-2) is fixedly mounted on the upper end of the inner wall of the oil storage tank (5), a push plate (5-3) is fixedly mounted on the lower end of the spring (5-2), the push plate (5-3) is slidably sealedly connected to the inner wall of the oil storage tank (5), a connecting pipe (5-5) is penetrated through the side wall of the oil storage tank (5), the connecting pipe (5-5) is penetrated and connected to the main oil pipe (6), and a limiting boss (5-4) is fixedly arranged on the inner wall of the oil storage tank (5) above the connecting pipe (5-5); Adjacent main oil pipes (6) are all slidably and sealably connected with connecting oil pipes (6-1); the driving mechanism (4) comprises a motor (4-1), the motor (4-1) is fixedly mounted on the trolley (1), telescopic shafts (4-2) are mounted at both ends of the motor (4-1), the telescopic shafts (4-2) are fixedly connected with connecting plates (4-3), and the connecting plates (4-3) are respectively fixedly and sealably connected to one end of the main oil pipes (6) located at both ends of the trolley (1) close to the end of the trolley (1).

2. A standardized stirrup lifting tool according to claim 1, characterized in that: The lower end surfaces of the placement platforms (2-1) are all laterally fixedly connected with transverse support rods (7), and the transverse support rods (7) are slidably connected with connecting slide rods (7-1).

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