Hoisting device suitable for multi-span SP hollow slabs

Abstract

The utility model relates to the field of fabricated house construction, in particular to a hoisting device suitable for multi-span sp hollow slabs, which is characterized in that a chain transmission component, a synchronous component and clamp components are arranged on a support beam, so that the device can adjust the distance between the clamp components, and the device can be suitable for hoisting operation of the sp hollow slabs with the spans from small to large; the supporting beams are arranged, so that the device provides rigid conditions required by hoisting operation of the large-span-size sp hollow slabs; the synchronous assembly is arranged, so that the clamp assemblies on the two sides synchronously and reversely move on the supporting beam, the two clamp assemblies are always located at symmetrical positions on the supporting beam, stress on the left side and the right side of the supporting beam is balanced, and the safety of hoisting operation is improved; and the lifting lugs are arranged at the four corners of the top of the supporting beam, so that a lifting rope can be conveniently mounted on the device by a lifting machine, and the operation of the lifting machine is facilitated. The device is simple in structure, convenient to operate, high in safety and suitable for engineering operation.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated house construction, and particularly relates to a hoisting device suitable for multi-span SP hollow slabs. Background Technique

[0002] The SP hollow slab is a new type of concrete prestressed structural member, full name Structura1 Precast HollowCore Slab, that is, a structural precast hollow slab. This kind of slab is usually made of concrete and steel bars, has certain structural strength and bearing capacity, and is widely used in structural parts such as the floor slabs, roofs and walls of buildings. The design of the hollow slab can adjust its thickness, length and bearing capacity according to needs to adapt to different architectural designs and load requirements. The SP hollow slab has the advantages of light weight, high strength, fast construction, good heat insulation and sound insulation performance, and low comprehensive cost, and has been widely used in modern buildings.

[0003] The multi-span SP hollow slab refers to a precast hollow slab with multiple continuous spans used in building structures. This kind of slab is usually used to cover multiple adjacent spaces or rooms, such as the floor slab system of multi-story buildings. The design and manufacture of the multi-span SP hollow slab consider the structural requirements of continuous spans to ensure uniform distribution of loads between multiple support points and provide sufficient stiffness and strength. However, due to its large span, there is still room for improvement in the on-site hoisting and transfer of multi-span SP hollow slabs.

[0004] There are also some concrete precast member plate lifting tools in the prior art, including a transverse adjusting rod and two longitudinal adjusting rods that form an "H" shape with each other. Clamping plates are arranged at both ends of the longitudinal adjusting rods. The two clamping plates are controlled to approach or separate by the telescoping of the longitudinal adjusting rods to achieve the clamping or loosening action, and the transverse distance between the two clamping structures is adjusted by the telescoping of the transverse adjusting rod. However, this kind of lifting tool has the following disadvantages: 1. It is not easy to adjust the telescoping of the transverse adjusting rod, and the operation is relatively cumbersome. 2. Since the transverse adjusting rod is set as a telescoping structure, in order to ensure its sufficient stiffness, its span cannot be too long. Content of the Utility Model

[0005] Aiming at the technical problems existing in the prior art, the purpose of the utility model is to provide a hoisting device suitable for multi-span sp hollow slabs, which can adjust the distance between the two clamp assemblies through the synchronous component and the chain drive component to make it suitable for the hoisting operation of sp hollow slabs from small spans to large spans; and by setting a support beam with a large span, the device provides the rigid conditions required for the hoisting operation of sp hollow slabs with large span dimensions.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A hoisting device applicable to multi-span SP hollow slabs, comprising a support beam, two fixture assemblies, two chain drive assemblies, a synchronization assembly, two rotating shafts, two moving plates, and two rectangular frames; the length direction of the support beam is arranged along the left-right direction, the two moving plates are symmetrically placed on the upper end surface of the support beam, and one moving plate is connected to the chain of one chain drive assembly; the rectangular frame is fixed on the moving plate and sleeved outside the support beam, and one fixture assembly is installed on one rectangular frame; the two rotating shafts are arranged on the upper end of the support beam, the two rotating shafts rotate synchronously through the synchronization assembly, one rotating shaft drives the moving plate to translate along the length direction of the support beam through one chain drive assembly, and the other rotating shaft drives the other moving plate to translate in the reverse direction along the length direction of the support beam through the other chain drive assembly.

[0008] Further, the chain drive assembly includes a first gear seat, a second gear seat, and a drive chain; a first gear is arranged in the first gear seat, and a second gear is arranged in the second gear seat; the first gear seats of the two side chain drive assemblies are symmetrically arranged on both sides of the center of the top of the support beam, and the second gear seats are symmetrically arranged at both ends of the support beam; the drive chain is an open chain; the moving plate is arranged between the first gear seat and the second gear seat, a vertically arranged hole plate is fixed on the left side of the moving plate, and a through hole is arranged at the center position of the hole plate; the connection mode of the left side chain drive assembly is: one end of the drive chain is fixed on the top of the hole plate, then bypasses above the left second gear, winds out from below the second gear, passes through the through hole of the hole plate, then bypasses above the left first gear, and then winds out from below the left first gear, and then the other end of the drive chain is fixed on the other end of the moving plate; the connection mode of the right side chain drive assembly is: one end of the drive chain is fixed on the top of the hole plate, then bypasses above the right first gear, winds out from below the right first gear, passes through the through hole of the hole plate, then bypasses above the right second gear, and then winds out from below the right second gear, and then the other end of the drive chain is fixed on the other end of the moving plate.

[0009] Further, ear walls are arranged on the front side and the rear side of the first gear seat and the second gear seat.

[0010] Further, the moving plate is in a "concave" shape, with protrusions on the left and right sides of the concave part, and the concave part runs through the front and rear; the hole plate is arranged above the left protrusion; one end of the drive chain is fixed on the hole plate and the other end is fixed on the protrusion on the right side of the moving plate.

[0011] Further, the synchronization component includes two synchronization gears, a cross-span rocker, and a closed drive chain; the two synchronization gears are respectively arranged on the front sides of the first gear seats of the two chain drive components, the synchronization gears are fixedly connected to a rotating shaft with the first gears, and the two synchronization gears are connected in a chain-like manner through the closed drive chain; a cross-span rocker is fixedly connected to one of the rotating shafts, and when the cross-span rocker rotates, it drives the rotating shaft to rotate, and at this time, the synchronization gear fixedly connected to the rotating shaft rotates synchronously with the first gear.

[0012] Further, the fixture component includes a telescopic hydraulic rod, two clamping arms, and two clamping heads; the hydraulic rod is arranged above the rectangular frame; the upper ends of the two clamping arms are respectively rotatably connected to both ends of the hydraulic rod, the middle parts of the clamping arms are hinged to the bottom of the rectangular frame, and the lower ends of the clamping arms are provided with clamping heads.

[0013] Further, an anti-slip pad is arranged on the clamping surface of the clamping head.

[0014] Further, the clamping head is detachably connected to the lower end of the clamping arm.

[0015] Further, lifting lugs are arranged at the four corners of the top of the support beam.

[0016] Generally speaking, the present utility model has the following advantages:

[0017] 1. By arranging a chain drive component, a synchronization component, and a fixture component on the support beam, the device can adjust the distance between the fixture components, so that it can be applicable to the hoisting operation of sp hollow slabs with small to large span diameters.

[0018] 2. By arranging the support beam, the device provides the rigid conditions required for the hoisting operation of sp hollow slabs with large span sizes.

[0019] 3. By arranging the synchronization component, the fixture components on both sides move synchronously and in opposite directions on the support beam, so that the two fixture components are always in a symmetrical position on the support beam, thereby enabling the forces on the left and right sides of the support beam to be balanced, and improving the safety of the hoisting operation.

[0020] 4. Lifting lugs are arranged at the four corners of the top of the support beam, which facilitates the crane to install lifting ropes for the device and facilitates the operation of the crane.

[0021] 5. The structure of the present utility model is simple, the operation is convenient, it is applicable to the hoisting operation of sp hollow slabs with different spans, and it has sufficient rigidity, high safety, and low cost, and is suitable for the actual application of engineering operations. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the left chain drive assembly of the present utility model.

[0024] Figure 3 It is a schematic diagram of the right chain drive assembly of the present utility model.

[0025] Figure 4 It is a schematic diagram of the fixture assembly of the present utility model.

[0026] Figure 5 It is a schematic diagram of the synchronization assembly of the present utility model.

[0027] Figure 6 It is a schematic diagram of the moving plate of the present utility model.

[0028] Figure 7 It is Figure 3 a partial enlarged view of the end of the hoisting device in

[0029] Among them, 1 is a support beam, 11 is a lifting lug, 2 is a chain drive assembly, 21 is a first gear seat, 211 is a first gear, 22 is a second gear seat, 221 is a second gear, 23 is a transmission chain, 24 is an ear wall, 3 is a moving plate, 31 is a perforated plate, 4 is a synchronization assembly, 41 is a synchronization gear, 42 is a span rocker, 43 is a closed transmission chain, 5 is a rotating shaft, 6 is a rectangular frame, 7 is a fixture assembly, 71 is a hydraulic rod, 72 is a clamping arm, 73 is a chuck, and 731 is an anti-slip pad. Specific Embodiments

[0030] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] As Figures 1-7 shown, a hoisting device applicable to multi-span SP hollow slabs includes a support beam, two fixture assemblies, two chain drive assemblies, a synchronization assembly, two rotating shafts, two moving plates, and two rectangular frames; the length direction of the support beam is arranged along the left-right direction, the two moving plates are symmetrically placed on the upper end surface of the support beam, and one moving plate is connected to the chain of one chain drive assembly; the rectangular frame is fixed on the moving plate and sleeved outside the support beam, and one fixture assembly is installed on one rectangular frame; the two rotating shafts are arranged at the upper end of the support beam, the two rotating shafts rotate synchronously through the synchronization assembly, one rotating shaft drives the moving plate to translate along the length direction of the support beam through one chain drive assembly, and the other rotating shaft drives the other moving plate to translate in the opposite direction along the length direction of the support beam through the other chain drive assembly.

[0032] Specifically, the support beam is provided to provide a rigid foundation for the setting of each component, enabling the device to provide the required rigidity when hoisting large-span SP hollow slabs, making the device safer and more stable when hoisting large-span SP hollow slabs.

[0033] As Figures 2-3 shown, the chain drive assembly includes a first gear seat, a second gear seat and a drive chain; a first gear is arranged in the first gear seat, and a second gear is arranged in the second gear seat; the first gear seats of the two side chain drive assemblies are symmetrically arranged on both sides of the center of the top of the support beam, and the second gear seats are symmetrically arranged at both ends of the support beam; the drive chain is an unclosed chain;

[0034] A moving plate is arranged between the first gear seat and the second gear seat. A vertically arranged orifice plate is fixed to the left side of the moving plate, and a through hole is arranged at the center position of the orifice plate;

[0035] The connection mode of the left side chain drive assembly is that one end of the drive chain is fixed to the top of the orifice plate, then bypasses above the second gear on the left side, passes out from below the second gear, passes through the through hole of the orifice plate, then bypasses above the first gear on the left side, and then passes out from below the first gear on the left side. Then, the other end of the drive chain is fixed to the other end of the moving plate;

[0036] The connection mode of the right side chain drive assembly is that one end of the drive chain is fixed to the top of the orifice plate, then bypasses above the first gear on the right side, passes out from below the first gear on the right side, passes through the through hole of the orifice plate, then bypasses above the second gear on the right side, and then passes out from below the second gear on the right side. Then, the other end of the drive chain is fixed to the other end of the moving plate.

[0037] Specifically, the synchronization assembly drives the moving plate to perform synchronous and reverse sliding above the support beam with two chain drive assemblies having different installation methods for the chains, so that the moving plate can drive the fixture assembly to move on the support beam, thereby adjusting the distance between the fixture assemblies, enabling the device to be applicable to the hoisting operations of sp hollow plates with different spans.

[0038] In this embodiment, ear walls are arranged on the front and rear sides of the first gear seat and the second gear seat.

[0039] The ear walls can limit the gears to prevent the gears from being misaligned; the ear walls can also play a role in restricting the drive chain to prevent the drive chain from slipping off the teeth.

[0040] As Figure 4 shown, the fixture assembly includes a telescopic hydraulic rod, two clamping arms and two clamping heads; the hydraulic rod is arranged above the rectangular frame; the upper ends of the two clamping arms are respectively rotatably connected to the two ends of the hydraulic rod, the middle parts of the clamping arms are hinged to the bottom of the rectangular frame, and the lower ends of the clamping arms are provided with clamping heads. An anti-slip pad is further arranged on the clamping surface of the clamping head.

[0041] In this embodiment, the clamping head is detachably connected to the lower end of the clamping arm, and a variety of clamping heads can be equipped to be applicable to sp hollow plates with different spans and different sizes.

[0042] AsFigure 5 As shown in the figure, the synchronization component includes two synchronization gears, a cross-span rocker, and a closed drive chain. The two synchronization gears are respectively arranged on the front sides of the first gear seats of the two chain drive components. The synchronization gears are fixedly connected to the first gears on a rotating shaft. The two synchronization gears are connected in a chain by the closed drive chain. A cross-span rocker is fixedly connected to one of the rotating shafts. When the cross-span rocker rotates, it drives the rotating shaft to rotate. At this time, the synchronization gear fixedly connected to the rotating shaft rotates synchronously with the first gear.

[0043] Specifically, when the cross-span rocker is rotated, the cross-span rocker drives the rotating shaft to rotate. The rotation of the rotating shaft drives the synchronization gear and the first gear on this side to rotate. At this time, the synchronization gear on the other side is rotated by the synchronization gear through the closed drive chain, thereby driving the first gear on the other side to rotate. At this time, the two chain drive components on both sides synchronously drive the moving plate to move synchronously along the length direction of the support beam towards the center position of the support beam or away from the center position of the support beam. By setting the synchronization component and the two chain drive components with different chain installation methods, the fixture components on both sides are always in symmetrical positions on the support beam, so that the forces on the left and right sides of the support beam are balanced, improving the safety of hoisting.

[0044] As Figure 6 shown in the figure, the moving plate is in a "concave" shape, with protrusions on the left and right sides of the concave part. The concave part runs through the front and back. The hole plate is arranged above one of the protrusions. One end of the drive chain is fixed to the hole plate, and the other end is fixed to the protrusion on the other side of the moving plate.

[0045] Specifically, the rectangular frame is fixed to the moving plate and sleeved outside the support beam. At this time, the rectangular frame forms a limiting frame for the moving plate, so that the moving plate can slide on the support beam without losing its position. And the rectangular frame is fixed to the moving plate. When the moving plate moves, it drives the rectangular frame, thereby driving the fixture component to move on the support beam.

[0046] As Figure 7 shown in the figure, in this embodiment, lifting lugs are also arranged at the four corners above the support beam, which facilitates the hoisting machine to install the lifting ropes for the device.

[0047] The working principle of the present utility model:

[0048] First, connect and install the hoisting machine to the four lifting lugs of the support beam through the lifting ropes. Then, shake the cross-span rocker to adjust the distance between the two fixture components, and adjust the distance between the two fixture components to a suitable span. Subsequently, adjust the hydraulic rod to expand the angle between the two clamping arms to the maximum. When hoisting, slowly adjust the hydraulic rod so that the clamping surfaces of the chucks slowly contact both sides of the sp hollow plate and slowly clamp. Then pre-lift by 10 cm, observe whether the fixture components fully clamp and fix the sp hollow plate. When the clamping and fixing effect is confirmed, hoist it to the destination and place the sp hollow plate stably.

[0049] Generally speaking, in the present utility model, by arranging a chain drive assembly, a synchronization assembly and a fixture assembly on the support beam, the device can adjust the distance between the fixture assemblies, so that it can be applicable to the hoisting operations of SP hollow slabs with spans ranging from small to large, that is, in addition to meeting the hoisting of ordinary SP hollow slabs, it can also meet the hoisting of multi-span SP hollow slabs; by arranging the support beam, the device provides the rigid conditions required for the hoisting operation of SP hollow slabs with large-span dimensions; by arranging the synchronization assembly and two chain drive assemblies with different chain installation methods, the fixture assemblies on both sides move synchronously and reversely on the support beam, so that the two fixture assemblies are always in symmetrical positions on the support beam, thereby making the forces on the left and right sides of the support beam balanced, improving the safety of the hoisting operation; lifting lugs are arranged at the four corners of the top of the support beam, which facilitates the crane to install the lifting ropes for the device and facilitates the operation of the crane. The structure of the present utility model is simple, the operation is convenient, it is applicable to the hoisting operations of SP hollow slabs with different spans, has sufficient rigidity, high safety, and low cost, and is suitable for the actual application of engineering operations.

[0050] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. A hoisting device suitable for multi-span sp hollow slabs, characterized by: It includes a support beam, two clamp assemblies, two chain drive assemblies, a synchronization assembly, two rotating shafts, two movable plates, and two rectangular frames; the length direction of the support beam is arranged along the left-right direction, the two movable plates are symmetrically arranged on the upper end surface of the support beam, and one movable plate is connected to the chain of a chain drive assembly; the rectangular frame is fixed on the movable plate and is sleeved outside the support beam, and a clamp assembly is installed on a rectangular frame; two rotating shafts are arranged at the upper end of the support beam, the two rotating shafts rotate synchronously through the synchronization assembly, one rotating shaft drives the movable plate to translate along the length direction of the support beam through a chain drive assembly, and the other rotating shaft drives the other movable plate to translate in the opposite direction along the length direction of the support beam through another chain drive assembly.

2. A hoisting device suitable for multi-span sp hollow slabs according to claim 1, characterized in that: The chain transmission assembly includes a first gear seat, a second gear seat and a transmission chain; the first gear seat is provided with a first gear, and the second gear seat is provided with a second gear; the first gear seats of the chain transmission assemblies on both sides are symmetrically arranged on both sides of the center of the top of the support beam, and the second gear seats are symmetrically arranged at both ends of the support beam; the transmission chain is a non-closed chain; The movable plate is arranged between the first gear seat and the second gear seat, a vertically arranged orifice plate is fixed on the left side of the movable plate, and a through hole is arranged at the center position of the orifice plate; The connection method of the left chain transmission assembly is as follows: one end of the transmission chain is fixed to the top of the orifice plate, and then passes over the second gear on the left, passes out from the bottom of the second gear through the through hole of the orifice plate, then passes over the first gear on the left, and then passes out from the bottom of the first gear on the left, and then the other end of the transmission chain is fixed to the other end of the moving plate; The connection method of the chain transmission assembly on the right side is: one end of the transmission chain is fixed to the top of the orifice plate, and then passes over the top of the first gear on the right side, passes through the through hole of the orifice plate from the bottom of the first gear on the right side, then passes over the top of the second gear on the right side, and then passes out from the bottom of the second gear on the right side, and then the other end of the transmission chain is fixed to the other end of the moving plate.

3. A hoisting device suitable for multi-span sp hollow slabs according to claim 2, characterized in that: The front and rear sides of the first gear seat and the second gear seat are both provided with ear walls.

4. A hoisting device suitable for multi-span sp hollow slabs according to claim 2, characterized in that: The movable plate is in a "concave" shape, with protrusions on the left and right sides of the concave part, and the concave part runs through the front and back; the orifice plate is arranged above the protrusion on the left side; one end of the transmission chain is fixed on the top of the orifice plate, and the other end is fixed on the protrusion on the right side of the movable plate.

5. A hoisting device suitable for multi-span sp hollow slabs according to claim 2, characterized in that: The synchronization assembly includes two synchronization gears, a span rocker and a closed transmission chain; the two synchronization gears are respectively arranged on the front sides of the first gear seats of the two chain transmission assemblies, the synchronization gear and the first gear are fixedly connected to a rotating shaft, and the two synchronization gears are chain-connected through a closed transmission chain; a span rocker is fixedly connected to one of the rotating shafts, and when the span rocker rotates, it drives the rotating shaft to rotate, and at this time the synchronization gear fixedly connected to the rotating shaft rotates synchronously with the first gear.

6. A hoisting device suitable for multi-span sp hollow slabs according to claim 1, characterized in that: The clamp assembly includes a retractable hydraulic rod, two clamp arms and two clamp heads; the hydraulic rod is arranged above the rectangular frame; the upper ends of the two clamp arms are rotatably connected to the two ends of the hydraulic rod respectively, the middle part of the clamp arm is hinged to the bottom of the rectangular frame, and the lower end of the clamp arm is equipped with a clamp head.

7. A hoisting device suitable for multi-span sp hollow slabs according to claim 6, characterized in that: An anti-slip pad is arranged on the clamping surface of the clamp.

8. The hoisting device for multi-span sp hollow slabs according to claim 6, characterized in that: The clamping head is detachably connected to the lower end of the clamping arm.

9. The hoisting device for multi-span sp hollow slabs according to claim 1, characterized in that: The four corners of the top of the support beam are all provided with lifting ears.

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