Special lifting appliance for movable mold table for producing precast concrete

Abstract

A lifting appliance special for a movable mold table for producing concrete prefabricated parts is characterized in that a main body of the lifting appliance comprises a main support and a connecting truss, hook claw rotating shafts, vertical push rods, three-axis connecting rods and fixed shaft seats are symmetrically arranged at the two ends of the inner side of the main support, and guide supports are arranged on the outer sides of fixed hook claws at the bottoms of the two ends of the main support; the outlines of the outer sides of the guide supports are flush with the outer side of the main support, guide slopes are arranged on the inner sides, facing the middle of the main support, of the guide supports, the upper ends of the fixed claws are connected with claw rotating shafts in a shaft sleeve mode, and the top ends of the fixed claws are connected with three-shaft connecting rods in a shaft pin mode. The two end shafts of the three-shaft connecting rod are respectively connected with the fixed hook claw and the fixed shaft seat in a shaft pin manner, and the middle end shaft of the three-shaft connecting rod is connected with the vertical push rod in a shaft pin manner, so that the lifting appliance is high in structural strength, high in positioning precision, capable of realizing self-locking of the hook claw, stable in lifting, and free from additionally arranging a lifting device on the surface of a mold table; and the use of the mold table on different products is not influenced.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete production, and specifically relates to a special hanger for a movable formwork platform for producing precast concrete parts. Background Art

[0002] The table formwork is mainly composed of a platform plate, a supporting system (including beams, brackets, supports, legs, etc.) and other accessories (such as lifting and walking mechanisms, etc.). It is suitable for the construction of cast-in-place reinforced concrete floor slabs with large spans, large column grids and large depths, and is especially suitable for the construction of cast-in-place slab-column structure (without column caps) floors. The specifications and dimensions of the table formwork are mainly determined by the span (column grid) and depth dimensions of the building structure and the lifting capacity of the lifting machinery. Generally, one or more tables are set according to the span (column grid) and depth dimensions. The floors of the standard layers of the cast-in-place concrete slab-column structure are constructed using table formwork, which has the following characteristics: one-time assembly, complete disassembly and reuse, which not only saves labor for support and disassembly, but also speeds up construction. The table formwork flies out from under the poured floor slab with the help of lifting machinery and is immediately transferred to the upper floor or moved to another flow construction section on the same floor for construction. The formwork does not fall to the ground, which can reduce the site for temporary stacking of formworks, and is particularly suitable for construction in downtown areas with tight land use.

[0003] When the formwork is lifted and transported, there are often precast concrete parts on the platform. If workers are used to operate the hooks during operation, there will be safety hazards. Utility Model Content

[0004] In order to solve the above problems, this paper proposes a special hanger for movable formwork platforms for concrete precast parts production. The main body of the hanger includes a main bracket and a connecting truss. Two main brackets are parallel to each other, and the main brackets are connected by a vertical connecting truss. Fixed hooks are provided at the bottom of both ends of the main bracket. The inner ends of the main bracket are symmetrically provided with hook shafts, vertical push rods, three-axis connecting rods and fixed shaft seats. Guide brackets are provided on the outside of the fixed hooks at the bottom of both ends of the main bracket. The outer contour of the guide bracket is flush with the outer side of the main bracket, and the guide bracket is aligned with the inner side of the middle part of the main bracket. A guide slope is provided, the upper end of the fixed hook claw is connected to the hook claw shaft in a sleeve type, the top end of the fixed hook claw is connected to the three-axis connecting rod in an axle pin type, the two end shafts of the three-axis connecting rod are respectively connected to the fixed hook claw and the fixed shaft seat in an axle pin type, the middle end shaft of the three-axis connecting rod is connected to the vertical push rod in an axle pin type, the hook claw shaft, the vertical push rod and the fixed shaft seat are all arranged on the horizontal center line on the inner side of the main bracket, the structural strength of the sling is high, and the positioning accuracy is high, the grab hook can realize self-locking, and the lifting is stable, and there is no need to add a lifting device on the surface of the mold table, which does not affect the use of the mold table for different products.

[0005] The main bracket is in the shape of a long rectangular frame bracket, and lifting ears are vertically provided on the upper sides of both ends of the main bracket. Guide brackets, fixed hooks, hook shafts, vertical push rods, three-axis connecting rods, fixed shaft seats and lifting ears are symmetrically provided on both ends of the main bracket. The middle part of the main bracket is provided with hook shafts, vertical push rods and fixed shaft seats from the outside to the inside. The bottom end of the main bracket is flush with the guide bracket, and the inner side of the main bracket is suspended with a fixed hook. The two groups of main brackets are connected as a whole by a middle connecting truss and square tubes at both ends to increase the rigidity of the entire sling, and the frame-type structure can more conveniently set a locking mechanism on the inside.

[0006] The guide bracket is a frame structure. The front and rear sides of the guide frame are both right-angled trapezoidal side panels, which are connected by connecting plates. The oblique edges of the guide frame side panels are all facing the middle of the main bracket. Die table slots are provided on the inner oblique edges of the guide frame side panels. The spacing between the die table slots of the guide frames at both ends is greater than the width of the movable die table. Guide brackets are respectively arranged under the two ends of the main bracket to facilitate the operation of the crane operator and play a role in positioning the die table and protecting the grab hook.

[0007] The fixed hook claw is a parallel double-hook integrated hook claw, a right-angle bent hook is provided at the bottom end of the fixed hook claw, and a rotating pin ear is provided at the top end of the fixed hook claw, the rotating pin ear is connected to the three-axis connecting rod through a pin shaft, and a rotating shaft ring is provided at the lower end of the rotating bucket pin ear, and the rotating shaft ring is nested and arranged in the middle part of the outer side of the hook claw rotating shaft, the hook claw rotating shaft is in the shape of a cylindrical shaft, and an annular nesting groove is provided on the outer side of the middle part of the hook claw rotating shaft, and both ends of the hook claw rotating shaft are vertically connected to the two sides of the main bracket through a bearing seat, and the nested rotating shaft in the nesting groove is connected to the fixed hook claw, and the three-axis connecting rod is a two-section three-axis connecting rod, and the two sections of the three-axis connecting rod have the same length. The middle part of the three-axis connecting rod is pin-connected to the two sections of the connecting rod and the vertical push rod through a pin shaft, and the outer end shafts of the three-axis connecting rod are respectively pin-connected to the fixed hook claw and the fixed shaft seat A locking limit block is provided on the outer side of the middle part of the three-axis connecting rod, and the locking limit block is horizontally horizontal. The vertical push rod is a translational push rod, and a pin hole is provided on the top of the vertical push rod. The vertical push rod is arranged in the middle of the hook claw rotating shaft and the fixed shaft seat, and the fixed shaft seat is a vertical rotating shaft seat. A longitudinal fixed shaft is provided on the upper end of the fixed shaft seat, and the outer side of the fixed shaft is connected to the three-axis connecting rod in a pin-axis manner. The fixed hook is installed on the hook claw rotating shaft and is connected to the three-axis connecting rod. By controlling the lifting and lowering of the vertical push rod, the opening and closing of the grab hook is driven. When the vertical push rod is contracted, the three-axis connecting rod makes the two connecting rods form a straight line through the locking limit block on the connecting rod and reaches the dead point position, so that the grab hook cannot be opened, which plays a role of self-locking protection. When the cylinder is lifted, the three-axis connecting rod is pushed out of the dead point position, driving the grab hook to open.

[0008] Beneficial effects:

[0009] The lifting device has high structural strength and can achieve high positioning accuracy. The grab hook can achieve self-locking and the lifting is stable. There is no need to add a lifting device on the surface of the mold table, which does not affect the use of the mold table for different products.

[0010] Because the same mold table will produce products of different specifications and sizes, it is impossible to set a lifting device on the surface of the mold table. The lifting position of this product is located in the grooves on both sides of the mold table. There is no need to add additional lifting devices on the upper surface of the mold table, which can greatly improve the applicable occasions of the mold table and meet the needs of users.

[0011] The trusses are connected in the middle and connected as a whole by square tubes at both ends, so as to increase the rigidity of the whole sling, and the frame-type structure can more conveniently set a locking mechanism on the inside.

[0012] Guide brackets are respectively arranged under the two ends of the main bracket to facilitate the crane operator's operation and play the role of positioning the mold platform and protecting the grab hook.

[0013] The fixed hook is installed on the hook shaft and connected to the three-axis connecting rod. By controlling the lifting and lowering of the vertical push rod, the grab hook is driven to open and close. When the vertical push rod contracts, the three-axis connecting rod makes the two connecting rods form a straight line through the locking limit block on the connecting rod and reaches the dead point position. This prevents the grab hook from opening and plays a role of self-locking protection. When the cylinder is lifted, the three-axis connecting rod is pushed out of the dead point position, driving the grab hook to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the assembly of a special hanger for a movable formwork platform for the production of precast concrete parts;

[0015] Figure 2 It is an oblique schematic diagram of a special hanger for a movable formwork platform for the production of precast concrete parts;

[0016] Figure 3 It is a top view schematic diagram of a special hanger for a movable formwork platform for the production of concrete precast parts;

[0017] In the figure; 1. main support, 2. connecting truss, 3. guide support, 4. fixed hook, 5. hook rotating shaft, 6. vertical push rod, 7. three-axis connecting rod, 8. fixed shaft seat, 9. lifting ear, 10. movable mold platform. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0019] Main support 1, connecting truss 2, guide support 3, fixed hook 4, hook rotating shaft 5, vertical push rod 6, three-axis connecting rod 7, fixed shaft seat 8, lifting ear 9, movable mold platform 10.

[0020] like Figure 1 , 2 , as shown in 3;

[0021] A special hanger for a movable formwork table 10 for producing precast concrete parts, wherein the main body of the hanger comprises a main support 1 and a connecting truss 2, wherein two main supports 1 are provided in parallel with each other, and the main supports 1 are connected by a vertical connecting truss 2, and fixed hooks 4 are provided at the bottom of both ends of the main support 1, and hook shafts 5, vertical push rods 6, three-axis connecting rods 7 and fixed shaft seats 8 are symmetrically provided at both ends of the inner side of the main support 1, and guide supports 3 are provided on the outside of the fixed hooks 4 at the bottom of both ends of the main support 1, and the outer contour of the guide support 3 is flush with the outer side of the main support 1, and the guide support 3 is provided with a guide slope on the inner side of the middle part of the main support 1, and the upper end of the fixed hook 4 is connected to the hook shaft 5 in a sleeve-like manner, and the top end of the fixed hook 4 is connected to the three-axis connecting rod in a pin-like manner. 7 is connected, the two end axes of the three-axis connecting rod 7 are respectively connected with the fixed hook claw 4 and the fixed shaft seat 8 by axle pins, the middle end axis of the three-axis connecting rod 7 is connected with the vertical push rod 6 by axle pins, the hook claw rotating shaft 5, the vertical push rod 6 and the fixed shaft seat 8 are all arranged on the horizontal midline of the inner side of the main bracket 1, the main bracket 1 is in the shape of a long rectangular frame bracket, and the upper sides of both ends of the main bracket 1 are vertically provided with lifting ears 9, and the two ends of the main bracket 1 are symmetrically provided with guide brackets 3, fixed hook claws 4, hook claw rotating shafts 5, vertical push rods 6, three-axis connecting rods 7, fixed shaft seats 8 and lifting ears 9, the middle part of the main bracket 1 is provided with hook claw rotating shafts 5, vertical push rods 6 and fixed shaft seats 8 in sequence from the outside to the inside, the bottom side end of the main bracket 1 is flush with the guide bracket 3, and the inner side of the main bracket 1 is suspended The main bracket 1 is provided with a fixed hook 4, and the guide bracket 3 is a frame structure. The front and rear sides of the guide frame are both right-angled trapezoidal side panels, and the side panels are connected by connecting plates. The oblique edges of the side panels of the guide frame are all facing the middle of the main bracket 1, and the inner oblique edges of the side panels of the guide frame are provided with die table slots. The spacing between the die table slots of the guide frames at both ends is greater than the width of the movable die table 10. The fixed hook 4 is a parallel double-hook integrated hook. The bottom end of the fixed hook 4 is provided with a right-angle bent hook, and the top of the fixed hook 4 is provided with a rotating pin ear, which is connected to the three-axis connecting rod 7 through a pin shaft. The lower end of the rotating bucket pin ear is provided with a rotating shaft ring, and the rotating shaft ring is nested and arranged in the middle of the outer side of the hook claw rotating shaft 5. The hook claw rotating shaft 5 is in the shape of a cylindrical shaft, and the middle outer side of the hook claw rotating shaft 5 is provided with a ring shaped nesting groove, both ends of the hook claw shaft 5 are vertically connected to the two sides of the main bracket 1 through the bearing seat, the nested shaft in the nesting groove is connected to the fixed hook claw 4, the three-axis connecting rod 7 is a two-section three-axis connecting rod, the two sections of the three-axis connecting rod 7 have the same length, the middle part of the three-axis connecting rod 7 connects the two sections of the connecting rod and the vertical push rod by a pin shaft, the outer end shafts of the three-axis connecting rod 7 are respectively connected to the fixed hook claw 4 and the fixed shaft seat 8 by a pin shaft, and a locking limit block is provided on the outer side of the middle part of the three-axis connecting rod 7, and the locking limit block is horizontal, the vertical push rod is a translation push rod, and a pin hole is provided on the top of the vertical push rod, and the vertical push rod is arranged in the middle of the hook claw shaft 5 and the fixed shaft seat 8, and the fixed shaft seat 8 is a vertical shaft seat, and the upper end of the fixed shaft seat 8 is provided with a longitudinal fixed shaft.The outer side of the fixed shaft is connected to the three-axis connecting rod 7 in a pin-type manner.

[0022] Implementation examples;

[0023] Guide brackets 3 are respectively arranged under the two ends of the main bracket 1. When the crane operator operates, he can directly lower the spreader to play the role of positioning the mold platform.

[0024] The fixed hook 4 is installed on the hook shaft 5 and is connected to the three-axis connecting rod 7. By controlling the lifting and lowering of the vertical push rod 6, the grab hook is driven to open and close. When the vertical push rod 6 contracts, the three-axis connecting rod 7 makes the two connecting rods form a straight line through the locking limit block on the connecting rod and reaches the dead point position. This prevents the grab hook from opening and plays a role of self-locking protection. When the cylinder is lifted, the three-axis connecting rod 7 is pushed out of the dead point position, driving the grab hook to open.

[0025] 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 in the protection scope of the present invention.

Claims

1. A special hanger for movable formwork platforms for concrete precast production, the main body of the hanger includes a main support and a connecting truss, two main supports are provided in parallel with each other, the main supports are connected by vertical connecting trusses, and the bottoms of both ends of the main supports are provided with fixed claws, characterized in that: The two ends of the inner side of the main bracket are symmetrically provided with a hook claw shaft, a vertical push rod, a three-axis connecting rod and a fixed shaft seat. A guide bracket is provided on the outside of the fixed hook claws at the bottom of both ends of the main bracket. The outer contour of the guide bracket is flush with the outer side of the main bracket. The guide bracket is provided with a guide slope on the inner side of the middle part of the main bracket. The upper end of the fixed hook claw is connected to the hook claw shaft in a sleeve-like manner, and the top end of the fixed hook claw is connected to the three-axis connecting rod in an axle pin-like manner. The two end shafts of the three-axis connecting rod are respectively connected to the fixed hook claw and the fixed shaft seat in an axle pin-like manner, and the middle end shaft of the three-axis connecting rod is connected to the vertical push rod in an axle pin-like manner. The hook claw shaft, vertical push rod and fixed shaft seat are all arranged on the horizontal center line of the inner side of the main bracket.

2. The special hanger for movable formwork platform for producing precast concrete parts according to claim 1, characterized in that: The main bracket is shaped like a long rectangular frame bracket, and lifting ears are vertically provided on the upper sides of both ends of the main bracket. Guide brackets, fixed hooks, hook shafts, vertical push rods, three-axis connecting rods, fixed shaft seats and lifting ears are symmetrically provided on both ends of the main bracket. The middle part of the main bracket is provided with hook shafts, vertical push rods and fixed shaft seats from the outside to the inside. The bottom end of the main bracket is flush with the guide bracket, and the inner side of the main bracket is suspended with a fixed hook.

3. The special hanger for movable formwork platform for producing precast concrete parts according to claim 1, characterized in that: The guide bracket is a frame structure, and the front and rear sides of the guide frame are both right-angled trapezoidal side panels, which are connected by connecting plates. The oblique edges of the guide frame side panels are all facing the middle of the main bracket. Die table slots are provided at the inner oblique edges of the guide frame side panels, and the spacing between the die table slots of the guide frames at both ends is greater than the width of the movable die table.

4. The special hanger for movable formwork for producing precast concrete parts according to claim 1, characterized in that: The fixed hook claw is a parallel double-hook integrated hook claw, a right-angle bent hook is provided at the bottom end of the fixed hook claw, a rotating pin ear is provided at the top end of the fixed hook claw, the rotating pin ear is connected to the three-axis connecting rod through a pin shaft, and a rotating shaft ring is provided at the lower end of the rotating bucket pin ear, and the rotating shaft ring is nested in the middle of the outer side of the hook claw rotating shaft.

5. The special hanger for movable formwork platform for producing precast concrete parts according to claim 1, characterized in that: The hook claw shaft is in the shape of a cylindrical shaft, and an annular nesting groove is provided on the outer side of the middle part of the hook claw shaft. Both ends of the hook claw shaft are vertically connected to the two sides of the main bracket through the bearing seat, and the nested shaft in the nesting groove is connected to the fixed hook claw.

6. The special hanger for movable formwork for production of precast concrete parts according to claim 1, characterized in that: The three-axis connecting rod is a two-section three-axis connecting rod. The two sections of the three-axis connecting rod are of the same length. The middle part of the three-axis connecting rod connects the two sections of the connecting rod and the vertical push rod by a pin shaft. The two end shafts at the outer side of the three-axis connecting rod are respectively pin-connected with the fixed hook claw and the fixed shaft seat. A locking limit block is provided on the outer side of the middle part of the three-axis connecting rod, and the locking limit block is horizontal.

7. The special hanger for movable formwork for production of precast concrete parts according to claim 1, characterized in that: The vertical push rod is a translational push rod, a pin hole is arranged on the top of the vertical push rod, and the vertical push rod is arranged in the middle of the hook claw rotating shaft and the fixed shaft seat.

8. The special hanger for movable formwork for production of precast concrete parts according to claim 1, characterized in that: The fixed shaft seat is a vertical rotating shaft seat, and a longitudinal fixed shaft is arranged at the upper end of the fixed shaft seat. The outer side of the fixed shaft is connected to the three-axis connecting rod in a pin-shaft manner.

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