A building material hoisting device

Abstract

This invention relates to the field of hoisting equipment, specifically to a hoisting device for building materials. A clamping disc is coaxial with and abuts against the end of the pipe. A clamping ring and the clamping disc are connected by a one-way assembly, allowing the clamping ring to slide only towards the clamping disc. A hoisting rope is fixed to a clamping rod for connection to a crane hook. One end of a fastening rod is mounted on the clamping disc and can slide radially along the clamping disc. Each hinged rod has one end hinged to the clamping rod and the other end hinged to the fastening rod. Initially, the hinged rod is tilted so that when the clamping rod slides towards the pipe, the hinged rod pushes the fastening rod towards the axis of the clamping disc. A locking element locks the hinged rod when it is perpendicular to the fastening rod, preventing it from retracting. The clamping disc and fastening rod together clamp the pipe, thereby increasing stability during pipe hoisting.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment, and more specifically to a hoisting device for building materials. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. In the construction of chemical production facilities and natural gas pipelines, it is necessary to move large pipe components to specific locations. Cranes are used for lifting and transporting these large pipe components.

[0003] Most existing cranes use a hook-type lifting method, attaching hooks to both ends of the pipe fitting for lifting. Because the pipe is cylindrical, it is prone to slipping during lifting. Furthermore, the connection between the hook and the pipe fitting is unstable, causing the pipe fitting to easily detach from the crane during transport, potentially leading to safety accidents. Summary of the Invention

[0004] This invention provides a building material hoisting device to solve the problem of pipes easily falling off during the hoisting process of existing hoisting equipment.

[0005] The building material hoisting device of the present invention adopts the following technical solution:

[0006] A building material hoisting device includes a crane and two clamping mechanisms. Each clamping mechanism includes a clamping disc, a clamping frame, and a fastening assembly. The clamping discs of the two clamping mechanisms are respectively located at both ends of the pipe to be hoisted. The clamping discs are coaxial with and abut against the ends of the pipe. The clamping frame includes a clamping ring, a lifting rope, and multiple clamping rods. The clamping ring and the clamping disc are coaxially arranged, with the clamping ring located on the side of the clamping disc away from the pipe. The clamping ring and the clamping disc are connected by a one-way assembly, allowing the clamping ring to slide only towards the clamping disc. Multiple clamping rods are evenly distributed along the circumferential direction of the clamping ring. The axes of the clamping rods and the clamping ring are parallel, with one end fixedly connected to the clamping ring. The lifting rope is fixed to the clamping rod for connection to the crane hook. The fastening assembly includes... Multiple fastening rods, hinge rods, and locking elements are provided. The fastening rods and clamping rods are arranged parallel to each other. One end of the fastening rod is mounted on the clamping plate and can slide along the radial direction of the clamping plate. Each fastening rod and a clamping rod correspond to each other in a radial direction, and the fastening rod is located on the side of the clamping plate closer to the pipe. Friction surfaces are provided on the peripheral walls of the fastening rods. The hinge rods are elastic telescopic rods. One end of each hinge rod is hinged to the clamping rod, and the other end is hinged to the fastening rod. In the initial state, the hinge rod is in an inclined state so that when the clamping rod slides towards the pipe, the hinge rod pushes the fastening rod to slide towards the axis of the clamping plate. The locking element is used to lock the hinge rod when it is perpendicular to the fastening rod, thereby preventing the hinge rod from retracting.

[0007] Furthermore, the hinged rod includes a main rod and a secondary rod; one end of the main rod is hinged to the clamping rod; the secondary rod can be slidably inserted into the main rod, and one end of the secondary rod is hinged to the fastening rod; the side wall of the main rod is provided with a locking groove; a locking element is provided in the locking groove so that when the main rod and the clamping rod are perpendicular, the locking element and the secondary rod are in contact, thereby preventing the secondary rod from retracting into the main rod.

[0008] Furthermore, the locking component includes a locking block, a push block, and a push rod; the locking groove extends along the length of the main rod; the locking groove is provided with a sliding groove; the locking groove communicates with the interior of the main rod through the sliding groove; the side wall of the secondary rod is provided with a toothed surface; the locking block is slidably disposed in the sliding groove; the side of the locking block near the secondary rod is a toothed surface, and a gap is maintained between the locking block and the secondary rod in the initial state, so that when the locking block slides towards the secondary rod to contact the secondary rod, the gear on the locking block and the toothed surface on the secondary rod mesh; the push rod is inserted into the locking groove, the upper end of the push rod extends out of the locking groove, and can slide along the length of the clamping rod in the locking groove, the lower end of the push rod is connected to the locking block to drive the clamping rod to slide synchronously; the push block is located between the locking groove and the clamping rod, and is fixedly disposed on the clamping rod, the push block is located on the side of the push rod away from the main rod, so that when the main rod rotates in a direction perpendicular to the clamping rod, the push block pushes the push rod to slide towards the main rod.

[0009] Furthermore, the clamping rod also includes a preload spring; one end of the preload spring is fixedly connected to the main rod, and the other end is fixedly connected to the auxiliary rod.

[0010] Furthermore, the one-way assembly includes a one-way shaft and a one-way limiting member; a mounting plate is fixedly mounted on the clamping ring; the one-way shaft and the clamping ring are coaxially arranged, the one-way shaft passes through the mounting plate and is fixedly connected to the clamping plate; the one-way limiting member is used to limit the one-way shaft when the lifting rope is subjected to an upward tension, thereby allowing the clamping ring to slide only relative to the clamping plate in the direction of the pipe.

[0011] Furthermore, the one-way limiting component includes a one-way connecting rod and a rope buckle; a ratchet rack is provided on the peripheral wall of the one-way shaft; a mounting plate is arranged along the radial direction of the clamping ring; a cavity structure is defined within the mounting plate; the one-way connecting rod is arranged within the mounting plate and can slide within the mounting plate along the radial direction of the clamping ring; a ratchet surface is provided at one end of the one-way connecting rod near the one-way shaft, and there is a gap between the one-way connecting rod and the one-way shaft in the initial state; the rope buckle is arranged on the clamping rod and can slide along the length direction of the clamping rod; one end of the lifting rope is fixedly connected to the rope buckle; the rope buckle is connected to the one-way connecting rod through a transmission component, and when the rope buckle slides away from the clamping ring, it drives the one-way connecting rod and the one-way shaft to contact.

[0012] Furthermore, the transmission assembly includes a transmission link; the end of the one-way link away from the one-way shaft has an inclined surface; the clamping rod with a rope buckle is tubular and communicates with the mounting plate; the transmission link is slidably disposed inside the clamping rod along the length direction of the clamping rod, and one end of the transmission link is fixedly connected to the rope buckle; the other end of the transmission link is provided with a wedge, the inclined surface of the wedge is in contact with the inclined surface of the one-way link, and when the transmission link slides away from the clamping ring, it pushes the one-way link to slide towards the one-way shaft.

[0013] Furthermore, the one-way assembly also includes a top pressure spring; the top pressure spring is sleeved on the one-way shaft between the top pressure spring displacement mounting plate and the clamping plate.

[0014] Furthermore, the surface in contact between the clamping disc and the pipe is a conical surface; multiple fastening grooves are evenly distributed circumferentially on the conical surface; each fastening groove extends radially along the clamping disc; one end of each fastening rod is inserted into a fastening groove.

[0015] The beneficial effects of this invention are as follows: This invention provides a building material hoisting device that includes a crane and two clamping mechanisms, each clamping mechanism comprising a clamping disc, a clamping frame, and a fastening assembly. The clamping discs abut against both ends of the pipe, thereby applying an axial clamping force to the pipe. Hoisting ropes are connected to the crane hook so that when the hook moves upward, the two ropes move accordingly. The component force generated by the two ropes drives the clamping ring towards the pipe, thus gradually moving the clamping ring towards the pipe. Fastening rods are used to approach the pipe via the clamping rods and hinge rods as the clamping ring moves towards the pipe, until frictional contact is made with the pipe. Multiple fastening rods clamp and hold the pipe in place to prevent axial sliding. A locking element restricts the extension and retraction of the hinge rods when they are perpendicular to each other, thereby maintaining frictional contact between the fastening rods and the pipe and preventing the pipe from slipping out of the clamping state due to the retraction of the hinge rods. The clamping disc and fastening rod work together to clamp the pipe, thereby increasing the stability during the pipe hoisting process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an embodiment of a building material hoisting device according to the present invention;

[0018] Figure 2This is a schematic diagram of the clamping mechanism in operation according to an embodiment of the building material hoisting device of the present invention;

[0019] Figure 3 This is a schematic diagram of the clamping mechanism structure of an embodiment of a building material hoisting device according to the present invention;

[0020] Figure 4 This is a partial structural schematic diagram of the clamping mechanism of an embodiment of a building material hoisting device according to the present invention;

[0021] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0022] Figure 6 This is a front view of the clamping mechanism of an embodiment of a building material hoisting device according to the present invention;

[0023] Figure 7 for Figure 6 A magnified view of a section at point B in the middle;

[0024] Figure 8 A cross-sectional view of the clamping mechanism of an embodiment of a building material hoisting device according to the present invention;

[0025] Figure 9 This is a schematic diagram of the working state structure of an embodiment of a building material hoisting device according to the present invention;

[0026] In the diagram: 100, crane; 110, hook; 200, clamping mechanism; 210, clamping plate; 211, fastening groove; 212, mounting plate; 220, clamping frame; 221, clamping ring; 222, lifting rope; 223, clamping rod; 231, fastening rod; 232, hinge rod; 233, locking block; 234, push block; 235, push rod; 236, locking groove; 237, main rod; 238, auxiliary rod; 239, preload spring; 241, one-way connecting rod; 242, rope buckle; 243, one-way shaft; 244, transmission connecting rod; 245, top pressure spring; 300, pipe. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] An embodiment of a building material hoisting device of the present invention, such as... Figures 1 to 9As shown, a building material hoisting device includes a crane 100 and two clamping mechanisms 200. The crane 100 is equipped with a hook 110, which is used to fix the object to be lifted and thus lift it upwards. Each clamping mechanism 200 includes a clamping disc 210, a clamping frame 220, and a fastening assembly. The clamping discs 210 of the two clamping mechanisms 200 are respectively located at both ends of the pipe 300 to be hoisted. The clamping discs 210 are disc-shaped and coaxial with and abut against the ends of the pipe 300. When clamping the pipe 300, the two clamping discs 210 abut against both ends of the pipe 300, thereby applying an axial clamping force to the pipe 300. The contact surface between the clamping disc 210 and the pipe 300 is a conical surface. When one end of the clamping disc 210 and the pipe 300 abuts, the conical portion of the clamping disc 210 can be inserted into one end of the pipe 300, thereby preventing the pipe 300 from falling off the two clamping discs 210 when it is lifted. Multiple fastening grooves 211 are evenly distributed circumferentially on the conical surface, each fastening groove 211 extending radially along the clamping disc 210. Specifically, there are four fastening grooves 211.

[0029] The clamping frame 220 includes a clamping ring 221, a lifting rope 222, and multiple clamping rods 223. The clamping ring 221 and the clamping disk 210 are coaxially arranged, with the clamping ring 221 located on the side of the clamping disk 210 away from the pipe 300. The clamping disk 210 is located between the clamping ring 221 and the pipe 300. The clamping ring 221 is circular. The clamping ring 221 and the clamping disk 210 are connected by a one-way component, so that the clamping ring 221 can only slide towards the clamping disk 210. Therefore, when the clamping ring 221 is subjected to a tensile force in the direction of the pipe 300, the clamping ring 221 can move towards the pipe 300 along the axial direction of the clamping disk 210, thereby bringing the clamping disk 210 and the clamping ring 221 closer to each other. The multiple clamping rods 223 are evenly distributed along the circumferential direction of the clamping ring 221. Specifically, there are four clamping rods 223. The clamping rod 223 and the clamping ring 221 are parallel to each other, with one end fixed to the clamping ring 221 and the other end extending towards the pipe 300. A lifting rope 222 is fixed to the clamping rod 223 and is used to connect to the hook 110 of the crane 100. Both ends of the lifting rope 222 are connected to the two clamping rods 223 respectively, and the two clamping rods 223 connected to the lifting rope 222 are at the same level. The two lifting ropes 222 are respectively connected to the clamping rods 223 on the two clamping frames 220, so that when the pipe 300 needs to be lifted, both lifting ropes 222 are connected to the hook 110. When the hook 110 moves upward, it pulls the two lifting ropes 222 to move accordingly. The component force generated by the two lifting ropes 222 drives the clamping ring 221 to move towards the pipe 300, thereby bringing the clamping ring 221 and its corresponding clamping disc 210 closer together.

[0030] The fastening assembly includes multiple fastening rods 231, hinge rods 232, and locking elements. The fastening rods 231 and clamping rods 223 are arranged parallel to each other. One end of the fastening rod 231 is disposed on the clamping plate 210 and can slide along the radial direction of the clamping plate 210. One end of each fastening rod 231 is inserted into a fastening groove 211, thereby allowing the fastening rod 231 to slide along the fastening groove 211. The fastening rods 231 are slidably arranged to adapt to pipes 300 of different diameters. Specifically, when multiple fastening rods 231 slide a certain distance towards the pipe at the same time, the multiple fastening rods 231 can contact the peripheral wall of the pipe, thereby further clamping the pipe. Each fastening rod 231 and a clamping rod 223 correspond to each other in a radial direction. Specifically, each fastening rod 231 and a clamping rod 223 are located in the same radial direction of the clamping disc 210, and the fastening rod 231 is located on the side of the clamping disc 210 closer to the pipe 300. The peripheral wall of the fastening rod 231 is provided with a friction surface. Specifically, the side of the fastening rod 231 that contacts the pipe 300 is the friction surface. Furthermore, the friction surface may be made of rubber to prevent the fastening rod 231 from scratching the surface of the pipe 300. When the friction surface of the fastening rod 231 contacts the peripheral wall of the pipe 300, the hinge rod 232 is an elastic telescopic rod. One end of each hinge rod 232 is hinged to the end of the clamping rod 223 away from the clamping ring 221, so that the hinge rod 232 can only rotate in the direction of the pipe 300 until it is perpendicular to the hinge rod 232, thereby preventing the clamping ring 221 from continuing to slide in the direction of the pipe 300 under the action of tension. The other end of the hinge rod 232 is hinged to the fastening rod 231. In the initial state, the hinge rod 232 is in an inclined state so that when the clamping rod 223 slides in the direction of the pipe 300, the fastening rod 231 is pushed to slide towards the axis of the clamping plate 210 through the hinge rod 232. When the fastening rod 231 slides a certain distance towards the axis of the clamping plate 210, the fastening rod 231 contacts the pipe 300, thereby locking the pipe 300 with multiple fastening rods 231. The locking element is used to lock the hinge rod 232 when it is perpendicular to the fastening rod 231, preventing the hinge rod 232 from retracting and thus maintaining frictional contact between the fastening rod 231 and the pipe 300, preventing the pipe 300 from detaching from the clamping state due to the retraction of the hinge rod 232. The friction surface of the fastening rod 231 and the peripheral wall of the pipe make frictional contact, keeping multiple fastening rods 231 in a clamping and holding state on the pipe 300, further increasing the clamping force on the pipe 300. The clamping disc 210 restricts the axial displacement of the pipe 300, and the fastening rods 231 restrict the radial displacement of the pipe 300, thereby increasing the stability during the hoisting process of the pipe 300.

[0031] In this embodiment, as Figures 3 to 7As shown, the hinge rod 232 includes a main rod 237 and a secondary rod 238. One end of the main rod 237 is hinged to the clamping rod 223. The main rod 237 is tubular, and one end is axially hinged to the end of the clamping rod 223 away from the clamping ring 221, thereby allowing the main rod 237 to rotate along the hinge axis. The secondary rod 238 can be slidably inserted into the main rod 237, and one end of the secondary rod 238 is axially hinged to the fastening rod 231, so that when the secondary rod 238 slides into the main rod 237, the length of the hinge rod 232 becomes shorter, and vice versa. The side wall of the main rod 237 is provided with a locking groove 236, which is connected to the main rod 237. A locking element is disposed within the locking groove 236 so that when the main rod 237 and the clamping rod 223 are perpendicular, the locking element and the secondary rod 238 come into contact, thereby preventing the secondary rod 238 from retracting into the main rod 237, thus causing the fastening rod 231 to lock the pipe fitting. The clamping rod 223 also includes a preload spring 239. One end of the preload spring 239 is fixed to the main rod 237, and the other end is fixed to the secondary rod 238. In the initial state, the fastening rod 231 can also be in contact with the pipe 300. As the hinge rod 232 gradually becomes perpendicular to the hinge rod 232 and the fastening rod 231 under the action of the clamping rod 223, the hinge rod 232 is gradually compressed and shortened, thereby causing the preload spring 239 to store and contract. This increases the squeezing force of the secondary rod 238 on the fastening rod 231 through the preload spring 239, thereby increasing the clamping force on the pipe 300.

[0032] In this embodiment, as Figures 4 to 8 As shown, the locking component includes a locking block 233, a push block 234, and a push rod 235. A locking groove 236 extends along the length of the main rod 237, and the upper end of the locking groove 236 maintains a certain distance from the clamping rod 223 (e.g., ...). Figure 7 (As shown). A sliding groove is provided on the locking groove 236, located at the lower end of the locking groove 236. The locking groove 236 communicates with the main rod 237 through the sliding groove. A toothed surface is provided on the side wall of the secondary rod 238, specifically on the side wall near the clamping ring 221. The locking block 233 is slidably disposed within the sliding groove, specifically (as shown). Figure 7 (As shown) The locking block 233 is slidably mounted on the sliding groove. The side of the locking block 233 closest to the secondary rod 238 has a toothed surface. Initially, a gap is maintained between the locking block 233 and the secondary rod 238 so that when the locking block 233 slides towards the secondary rod 238 and contacts it, the gear on the locking block 233 meshes with the toothed surface on the secondary rod 238. When the locking block 233 and the secondary rod 238 are engaged, the locking block 233 can restrict the secondary rod 238 from continuing to slide into the main rod 237, thereby preventing the hinge rod 232 from retracting. Specifically, the locking block 233 is a right-angled trapezoidal block (e.g., Figure 7As shown, the right side of the locking block 233 is the bottom surface of the trapezoidal block, and the toothed surface is located on the bottom surface of the locking block 233. Correspondingly, the upper side of the sliding groove is an inclined surface, which makes the opening of the sliding groove on the side of the locking groove 236 smaller than the opening of the sliding groove on the side of the main rod 237, so that the inclined surface on the sliding groove and the inclined surface on the locking block 233 cooperate. The push rod 235 is inserted into the locking groove 236, and the upper end of the push rod 235 extends out of the locking groove 236 and can slide along the length direction of the clamping rod 223 within the locking groove 236. Specifically, the push rod 235 can slide left and right within the locking groove 236 (e.g., ...). Figure 7 As shown, the lower end of the push rod 235 is connected to the locking block 233 to drive the clamping rod 223 to slide synchronously. Furthermore, when the push rod 235 slides left and right, it drives the locking block 233 to slide synchronously. The push block 234 is located between the locking groove 236 and the clamping rod 223, and is fixedly mounted on the clamping rod 223. The push block 234 is located on the side of the push rod 235 away from the main rod 237, so that when the main rod 237 rotates in a direction perpendicular to the clamping rod 223, the push block 234 pushes the push rod 235 to slide closer to the main rod 237. Specifically, the surface of the push block 234 near the main rod 237 is a straight surface, perpendicular to the clamping rod 223. When the hinge rod 232 and the clamping rod 223 are at a certain angle, the push rod 235 on the hinge rod 232 contacts the straight surface on the push block 234. As the hinge rod 232 continues to rotate relative to the clamping rod 223, the push block 234 pushes the push rod 235 to gradually slide towards the auxiliary rod 238. When the hinge rod 232 and the clamping rod 223 are perpendicular to each other, the straight surface of the push block 234 and the side surface of the push rod 235 are in contact. At this time, the push rod 235 pushes the push block 234 and the auxiliary rod 238 to engage, thereby locking the hinge rod 232. When the side surface of the push rod 235 and the straight surface of the push block 234 are in contact, the hinge rod 232 cannot continue to rotate, thus keeping the hinge rod 232 perpendicular to the clamping rod 223.

[0033] In this embodiment, as Figures 6 to 8 As shown, the one-way assembly includes a one-way shaft 243 and a one-way limiting member, with a mounting plate 212 fixedly mounted on the clamping ring 221. The one-way shaft 243 and the clamping ring 221 are coaxially arranged, with the one-way shaft 243 passing through the mounting plate 212 and fixedly connected to the clamping disc 210. The one-way limiting member is used to limit the one-way shaft 243 when the lifting rope 222 is subjected to an upward tension, thereby allowing the clamping ring 221 to slide only relative to the clamping disc 210 towards the pipe 300. The one-way limiting member is provided to ensure a one-way transmission connection between the clamping ring 221 and the one-way shaft 243 when the hook 110 lifts the pipe 300. This facilitates the clamping disc 210 and the clamping frame to be adjusted accordingly when the two clamping mechanisms 200 clamp the two ends of the pipe 300 during the preparation stage.

[0034] In this embodiment, as Figure 8As shown, the one-way limiting component includes a one-way connecting rod 241 and a rope buckle 242, and a ratchet rack is provided on the peripheral wall of the one-way shaft 243. The mounting plate 212 is arranged along the radial direction of the clamping ring 221, and a cavity structure is defined within the mounting plate 212. The one-way connecting rod 241 is disposed within the mounting plate 212 and can slide within the mounting plate 212 along the radial direction of the clamping ring 221. A ratchet surface is provided at one end of the one-way connecting rod 241 near the one-way shaft 243. In the initial state, there is a gap between the one-way connecting rod 241 and the one-way shaft 243, so that when the one-way connecting rod 241 slides to contact the one-way shaft 243, the ratchet surface of the one-way connecting rod 241 engages with the ratchet rack of the one-way shaft 243, thereby allowing the mounting plate 212 to slide only along the one-way shaft 243 towards the pipe 300. A rope buckle 242 is mounted on the clamping rod 223 and can slide along the length of the clamping rod 223. One end of the suspension rope 222 is fixedly connected to the rope buckle 242. The rope buckle 242 is connected to a one-way link 241 via a transmission assembly. When the rope buckle 242 slides away from the clamping ring 221, it drives the one-way link 241 and the one-way shaft 243 to contact, thereby engaging the ratchet surface of the one-way link 241 with the ratchet rack on the one-way shaft 243. Specifically, there are two one-way links 241, which are symmetrically arranged about the one-way shaft 243. Similarly, there are two rope buckles 242, located in the same radial direction of the clamping disc 210, and each rope buckle 242 is connected to a one-way link 241 via a transmission assembly. The arrangement of two one-way links 241 increases the unidirectional restraining force on the one-way shaft 243. The two ends of the suspension rope 222 are respectively fixed to two rope buckles 242.

[0035] In this embodiment, as Figure 8 As shown, the transmission assembly includes a transmission link 244, and a one-way link 241 with an inclined surface at one end away from the one-way shaft 243. A clamping rod 223 with a rope buckle 242 is tubular and communicates with the mounting plate 212. The transmission link 244 is slidably disposed within the clamping rod 223 along its length, and one end of the transmission link 244 is fixedly connected to the rope buckle 242. A wedge is provided at the other end of the transmission link 244, and the inclined surface of the wedge contacts the inclined surface of the one-way link 241. When the transmission link 244 slides away from the clamping ring 221, it pushes the one-way link 241 to slide towards the one-way shaft 243. Specifically, when the hook 110 rises, the horizontal force generated by the hoisting rope 222 causes the rope buckle 242 to slide, which in turn drives the transmission link 244 to slide, thereby causing the transmission link 244 to push the one-way link 241 and the one-way shaft 243 into contact. When the pipe 300 is completely lifted, the one-way link 241 and the one-way shaft 243 engage.

[0036] In this embodiment, as Figure 6As shown, the one-way assembly also includes a top pressure spring 245; the top pressure spring 245 is positioned between the displacement mounting plate 212 and the clamping plate 210, and is sleeved on the one-way shaft 243. When the clamping ring 221 slides relative to the clamping plate 210 toward the pipe 300, the top pressure spring 245 is compressed and stores force. At the same time, the top pressure spring 245 exerts a pushing force on the clamping ring 221 in the direction away from the pipe, thereby preventing the clamping ring 221 from sliding a distance toward the pipe that exceeds a preset value.

[0037] During operation, the pipe 300 is placed horizontally, and each clamping disc 210 is aligned with one end of the pipe 300. The fastening rod 231 is adjusted so that it contacts the surface of the pipe 300. The clamping ring 221 is then adjusted so that it slides in the axial direction of the one-way shaft 243, thereby adjusting the tilt angle of the hinge rod 232.

[0038] Two lifting ropes 222 are connected to the hook 110 of the crane 100, and the crane 100 lifts the hook 110 upward. The hook 110 exerts an upward pulling force on the lifting ropes 222, and the horizontal component of the lifting ropes 222 is also present. The horizontal component of the force on each lifting rope 222 causes the corresponding two rope loops 242 to slide along the clamping rod 223 toward the pipe 300. When the rope loops 242 slide, they cause the corresponding transmission connecting rods 244 to slide. Since the inclined surface of the wedge on the transmission connecting rod 244 contacts the inclined surface of the one-way connecting rod 241, the transmission connecting rod 244 slides toward the pipe 300, pushing the one-way connecting rod 241 and the one-way shaft 243 into contact. When the pipe 300 is lifted, the one-way connecting rod 241 and the one-way shaft 243 engage.

[0039] When the pipe 300 is lifted, the force of the lifting rope 222 drives the clamping rod 223 and the clamping ring 221 to slide towards the pipe 300 through the rope buckle 242. This causes the clamping ring 221 to drive the mounting plate 212 to slide towards the pipe 300 along the one-way shaft 243, which in turn causes the top pressure spring 245 to contract and store force. Since the fastening rod 231 is in contact with the pipe 300, during the sliding of the clamping rod 223 towards the pipe 300, the hinge rod 232 rotates along the hinge shaft on the clamping rod 223, which causes the auxiliary rod 238 to contract inward towards the main rod 237, causing the preload spring 239 to contract and store force. When the push rod 235 on the hinge rod 232 contacts the straight surface of the push block 234, and the hinge rod 232 continues to rotate relative to the clamping rod 223, the push block 234 pushes the push rod 235 to gradually slide towards the auxiliary rod 238. When the hinge rod 232 and the clamping rod 223 are perpendicular to each other, the straight surface of the push block 234 and the side surface of the push rod 235 are in contact. At this time, the push rod 235 pushes the push block 234 and the auxiliary rod 238 to engage, thereby locking the hinge rod 232. When the side surface of the push rod 235 is in contact with the straight surface of the push block 234, the hinge rod 232 cannot continue to rotate, thus keeping the hinge rod 232 perpendicular to the clamping rod 223.

[0040] When the hinge rod 232 is in a vertical position, multiple fastening rods 231 clamp the pipe 300, and at the same time, the elastic potential energy of the pre-tension spring 239 is at its maximum value, thereby maximizing the friction between the fastening rods 231 and the pipe 300. This increases the clamping force on the pipe 300 during the lifting process, thereby increasing the stability during the lifting process.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A building material hoisting device comprising a crane, characterized in that: Includes two clamping mechanisms; the clamping mechanisms include; Clamping discs: The clamping discs of the two clamping mechanisms are located at both ends of the pipe to be lifted; the clamping discs are coaxial with and abut against the ends of the pipe. The clamping frame includes a clamping ring, a lifting rope, and multiple clamping rods. The clamping ring and the clamping disc are coaxially arranged, with the clamping ring located on the side of the clamping disc away from the pipe. The clamping ring and the clamping disc are connected by a one-way assembly, allowing the clamping ring to slide only toward the clamping disc. Multiple clamping rods are evenly distributed along the circumferential direction of the clamping ring. The axes of the clamping rods and the clamping ring are parallel, with one end fixedly connected to the clamping ring. The lifting rope is fixed to the clamping rods for connection to the hook of a crane. The fastening assembly includes multiple fastening rods, hinge rods, and locking elements; the fastening rods and clamping rods are arranged parallel to each other; one end of the fastening rod is disposed on the clamping plate and is capable of sliding along the radial direction of the clamping plate; each fastening rod and a clamping rod correspond to each other in a radial direction, and the fastening rod is located on the side of the clamping plate closer to the pipe. The fastening rod has a friction surface on its peripheral wall; the hinge rod is an elastic telescopic rod; one end of each hinge rod is hinged to the clamping rod, and the other end is hinged to the fastening rod. In the initial state, the hinge rod is in an inclined state so that when the clamping rod slides towards the pipe, the hinge rod pushes the fastening rod to slide towards the axis of the clamping plate; the locking element is used to lock the hinge rod when it is perpendicular to the fastening rod, thereby preventing the hinge rod from retracting.

2. The building material hoisting device according to claim 1, characterized in that: The hinged rod includes a main rod and a secondary rod; one end of the main rod is hinged to the clamping rod; the secondary rod can be slidably inserted into the main rod, and one end of the secondary rod is hinged to the fastening rod; the side wall of the main rod is provided with a locking groove; a locking element is provided in the locking groove so that when the main rod and the clamping rod are perpendicular, the locking element and the secondary rod are in contact, thereby preventing the secondary rod from retracting into the main rod.

3. The building material hoisting device according to claim 2, characterized in that: The locking component includes a locking block, a push block, and a push rod; a locking groove extends along the length of the main rod; a sliding groove is provided on the locking groove; the locking groove communicates with the interior of the main rod through the sliding groove; a toothed surface is provided on the side wall of the secondary rod; the locking block is slidably disposed in the sliding groove; the side of the locking block near the secondary rod has a toothed surface, and a gap is maintained between the locking block and the secondary rod in the initial state, so that when the locking block slides towards the secondary rod and contacts the secondary rod, the gear on the locking block meshes with the toothed surface on the secondary rod; the push rod is inserted into the locking groove, the upper end of the push rod extends out of the locking groove, and can slide along the length of the clamping rod within the locking groove, the lower end of the push rod is connected to the locking block to drive the clamping rod to slide synchronously; the push block is located between the locking groove and the clamping rod, and is fixedly disposed on the clamping rod, the push block is located on the side of the push rod away from the main rod, so that when the main rod rotates in a direction perpendicular to the clamping rod, the push block pushes the push rod to slide towards the main rod.

4. A building material hoisting device according to claim 2, characterized in that: The clamping rod also includes a preload spring; one end of the preload spring is fixed to the main rod, and the other end is fixed to the auxiliary rod.

5. A building material hoisting device according to claim 1, characterized in that: The one-way assembly includes a one-way shaft and a one-way limiting component; a mounting plate is fixed on the clamping ring; the one-way shaft and the clamping ring are coaxially arranged, the one-way shaft passes through the mounting plate and is fixedly connected to the clamping plate; the one-way limiting component is used to limit the one-way shaft when the lifting rope is subjected to an upward tension, so that the clamping ring can only slide relative to the clamping plate towards the pipe.

6. A building material hoisting device according to claim 5, characterized in that: The one-way limiting component includes a one-way connecting rod and a rope buckle; a ratchet rack is provided on the peripheral wall of the one-way shaft; a mounting plate is arranged along the radial direction of the clamping ring; a cavity structure is defined within the mounting plate; the one-way connecting rod is arranged within the mounting plate and can slide within the mounting plate along the radial direction of the clamping ring; a ratchet surface is provided at the end of the one-way connecting rod near the one-way shaft, and there is a gap between the one-way connecting rod and the one-way shaft in the initial state; the rope buckle is arranged on the clamping rod and can slide along the length direction of the clamping rod; one end of the lifting rope is fixedly connected to the rope buckle; the rope buckle is connected to the one-way connecting rod through a transmission component, and when the rope buckle slides away from the clamping ring, it drives the one-way connecting rod and the one-way shaft to contact.

7. A building material hoisting device according to claim 6, characterized in that: The transmission assembly includes a transmission link; one end of the one-way link away from the one-way shaft has an inclined surface; the clamping rod with a rope buckle is tubular and communicates with the mounting plate; the transmission link is slidably disposed inside the clamping rod along the length direction of the clamping rod, and one end of the transmission link is fixedly connected to the rope buckle; the other end of the transmission link has a wedge, the inclined surface of the wedge is in contact with the inclined surface of the one-way link, and when the transmission link slides away from the clamping ring, it pushes the one-way link to slide towards the one-way shaft.

8. A building material hoisting device according to claim 5, characterized in that: The one-way assembly also includes a top pressure spring; the top pressure spring is sleeved on the one-way shaft between the top pressure spring displacement mounting plate and the clamping plate.

9. A building material hoisting device according to claim 1, characterized in that: The surface in contact between the clamping disc and the pipe is a conical surface; multiple fastening grooves are evenly distributed circumferentially on the conical surface; each fastening groove extends radially along the clamping disc; one end of each fastening rod is inserted into a fastening groove.

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