Electric detacher for hoisting telescopic reinforcement cage

Abstract

The utility model relates to the technical field of detachers, and discloses an electric detacher for hoisting a telescopic reinforcement cage, which comprises an electric telescopic cylinder, a U-shaped hook body and a hooking component, the electric telescopic cylinder is mounted on one side of the U-shaped hook body; a mounting groove transversely penetrating through the U-shaped hook body is formed in the open end of the U-shaped hook body, and ball guide sleeves are mounted on the inner walls of the mounting groove; a telescopic rod of the electric telescopic cylinder extends into the ball guide sleeve and is in contact with a steel ball on the surface of the ball guide sleeve; an annular groove is formed in the outer circumferential surface of the U-shaped groove bearing; a hanging assembly for hanging the telescopic reinforcement cage is connected below the U-shaped groove bearing; the U-shaped groove bearing is hung in the opening of the U-shaped hook body through a telescopic rod of the electric telescopic cylinder, so that an annular groove in the outer circumferential surface of the U-shaped groove bearing is in rolling fit with the surface of the telescopic rod of the electric telescopic cylinder. The electric detacher can reduce friction force needing to be overcome when the telescopic rod of the electric telescopic cylinder retracts.

Description

Technical Field

[0001] The utility model relates to a decoupling device, in particular to an electric decoupling device for hoisting a telescopic steel cage, and belongs to the technical field of decoupling devices. Background Art

[0002] The telescopic steel cage mainly plays a tensile role and constrains the pile concrete so that it can withstand a certain axial tension. During the construction of bridges, culverts or high-rise buildings, holes are punched and drilled by machines, and the hole depth meets the design requirements. A decoupler is used to dock the telescopic steel cage, and then the telescopic steel cage is lowered into the pile hole. After reaching the set position, the telescopic steel cage is unfolded and the guide tube is inserted for concrete pouring.

[0003] At present, the most common unhooking device adopts the electric cylinder method, that is, the hook is equipped with an electric cylinder, when the telescopic rod of the electric cylinder is extended, the telescopic steel cage is hung on the telescopic rod, and the telescopic steel cage is removed when the telescopic rod is retracted; but since the telescopic steel cage is usually heavy, the force that the electric cylinder telescopic rod needs to overcome for contraction is also heavy. If the weight of the telescopic steel cage is 500KG~1000KG, and the friction coefficient of steel to steel is 0.2~0.3, the force that the electric cylinder telescopic rod needs to overcome for contraction is 100KG~300KG. The large force requires a large power requirement and a large size of the electric cylinder to be installed. Utility Model Content

[0004] In view of this, the utility model provides a telescopic electric unhooking device for lifting a steel cage, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: an electric unhooking device for telescopic steel cage hoisting, comprising: an electric telescopic cylinder, a U-shaped hook body and a hooking assembly;

[0006] The U-shaped hook body is opened downward; the electric telescopic cylinder is installed on one side of the U-shaped hook body; the opening end of the U-shaped hook body is provided with a mounting groove which runs through the U-shaped hook body horizontally, and the inner wall of the mounting groove is installed with a ball guide sleeve; the telescopic rod of the electric telescopic cylinder extends into the ball guide sleeve and contacts with the steel ball on the surface of the ball guide sleeve;

[0007] The U-shaped groove bearing has an annular groove on its outer circumferential surface; a hanging assembly for hanging the telescopic steel cage is connected below the U-shaped groove bearing;

[0008] The U-shaped groove bearing is hung in the opening of the U-shaped hook body through the telescopic rod of the electric telescopic cylinder, so that the annular groove on the outer circumferential surface of the U-shaped groove bearing rolls with the surface of the telescopic rod of the electric telescopic cylinder.

[0009] As a preferred embodiment of the present invention, the hanging assembly includes a connecting bolt and a U-shaped hanging buckle;

[0010] The connecting bolt is coaxially sleeved in the center hole of the U-shaped groove bearing;

[0011] The two ends of the upper part of the U-shaped hanging buckle are respectively connected to the two ends of the connecting bolt extending out of the U-shaped groove bearing.

[0012] As a preferred embodiment of the present invention, both ends of the upper portion of the U-shaped hook are connected to docking rings;

[0013] The connecting bolt includes a middle polished rod and threaded parts at both ends. The connecting bolt passes through the U-shaped groove bearing through the middle polished rod; the threaded parts at both ends of the connecting bolt extend out of the U-shaped groove bearing and are connected to docking rings, and nuts are connected to the outer threads of the two docking rings.

[0014] As a preferred embodiment of the present invention, a limiting block is provided at a position corresponding to the mounting groove at one end of the U-shaped hook body away from the electric telescopic cylinder.

[0015] As a preferred embodiment of the present invention, a connecting piece is connected to the top of the U-shaped hook body, and a hanging hole is provided on the surface of the connecting piece.

[0016] As a preferred embodiment of the present invention, the connecting piece is located in the middle of the top of the U-shaped hook body.

[0017] As a preferred embodiment of the present invention, the ball guide sleeve is a copper-based ball guide sleeve.

[0018] As a preferred embodiment of the present invention, the electric telescopic cylinder is fixedly connected to the U-shaped hook body via a fastener.

[0019] As a preferred embodiment of the present invention, a movable groove is provided on the inner surface of the U-shaped hook body for connecting to the electric telescopic cylinder side, so as to provide an operating space for installing and disassembling the electric telescopic cylinder.

[0020] As a preferred embodiment of the present invention, the lower end opening of the U-shaped hook body is trumpet-shaped.

[0021] Beneficial effects:

[0022] (1) In the electric unhooking device, a ball guide sleeve is provided, and the telescopic rod of the electric telescopic cylinder extends into the ball guide sleeve and contacts the steel balls on the surface of the ball guide sleeve to form rolling friction, thereby reducing the friction force that needs to be overcome when the telescopic rod of the electric telescopic cylinder is retracted, thereby enabling the selection of an electric telescopic cylinder with smaller power and size.

[0023] (2) In the electric unhooking device, a hanging assembly and a U-shaped groove bearing are provided, and the hanging bracket assembly and the U-shaped groove bearing are pre-installed on the steel cage. When lifting, the telescopic rod of the electric telescopic cylinder passes through the hanging bracket assembly and cooperates with the U-shaped groove of the U-shaped groove bearing, so that the telescopic rod of the electric telescopic cylinder and the U-shaped groove bearing are rollingly matched, thereby reducing the friction force that needs to be overcome when the telescopic rod of the electric telescopic cylinder is separated from the steel cage, and facilitating separation and unhooking.

[0024] (3) In the electric unhooker, the hooking assembly has a simple structure and is convenient for hooking with the telescopic steel cage.

[0025] (4) In the electric unhooking device, threaded nuts on both sides of the hook assembly are used to limit the position of the U-shaped hook.

[0026] (5) In the electric unhooking device, a movable groove is provided on the inner surface of the U-shaped hook body for connecting to the electric telescopic cylinder side, which is used to provide an operating space for installing and removing the electric telescopic cylinder, thereby facilitating the installation of the electric telescopic cylinder on the U-shaped hook body.

[0027] (6) In the electric unhooking device, the lower end opening of the U-shaped hook body is horn-shaped to avoid jamming during unhooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the electric unhooking device for hoisting a telescopic steel cage of the utility model;

[0029] Figure 2 It is a side sectional view of the electric unhooking device for hoisting a telescopic steel cage of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the ball guide sleeve in the utility model;

[0031] Figure 4 It is a schematic diagram of the structure of the hanging component in the utility model.

[0032] In the figure: 1-electric telescopic cylinder; 2-U-shaped hook body; 3-hook assembly; 31-connecting bolt; 32-U-shaped hook; 33-docking ring; 34-nut; 4-mounting groove; 5-ball guide sleeve; 6-steel ball; 7-U-shaped groove bearing; 8-limiting block; 9-connecting piece; 10-hanging hole; 11-movable groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] like Figure 1 and Figure 2 As shown, the telescopic steel cage hoisting electric unhooking device comprises: an electric telescopic cylinder 1, a U-shaped hook body 2 and a hanging assembly 3, the U-shaped hook body 2 is opened downward, the electric telescopic cylinder 1 is installed on one side of the U-shaped hook body 2, the U-shaped hook body 2 is provided with a mounting groove 4 which runs through the U-shaped hook body 2 horizontally at the open end, and a ball guide sleeve 5 is installed on the inner wall of the mounting groove 4, and a plurality of steel balls 6 are distributed in an array on the surface of the ball guide sleeve 5, as shown in FIG. Figure 3 As shown; the telescopic rod of the electric telescopic cylinder 1 extends into the ball guide sleeve 5, and contacts the steel balls 6 on the surface of the ball guide sleeve 5. The surface of the telescopic rod of the electric telescopic cylinder 1 rolls with the steel balls 6, so that the sliding friction is converted into rolling friction, reducing the friction force that needs to be overcome when the telescopic rod of the electric telescopic cylinder 1 is retracted.

[0035] The U-groove bearing 7 is hung in the opening of the U-shaped hook body 2 through the telescopic rod of the electric telescopic cylinder 1, and the outer circumferential surface of the U-groove bearing 7 has an annular groove; the hanging component 3 is connected below the U-groove bearing 7, and the telescopic rod of the electric telescopic cylinder 1 passes between the hanging component 3 and the U-groove bearing 7, so that the annular groove on the outer circumferential surface of the U-groove bearing 7 rolls with the surface of the telescopic rod of the electric telescopic cylinder 1, so that rolling friction is formed between the U-groove bearing 7 and the telescopic rod of the electric telescopic cylinder 1.

[0036] like Figure 4 As shown, the hanging assembly 3 is used to hang the telescopic steel cage; the hanging assembly 3 includes: a connecting bolt 31 and a U-shaped hanging buckle 32, the top of each end of the U-shaped hanging buckle 32 has a docking ring 33, the connecting bolt 31 includes a middle light rod and threaded parts at both ends, the connecting bolt 31 is coaxially sleeved in the U-shaped groove bearing 7 through the middle light rod, the threaded parts at both ends of the connecting bolt 31 extend out of the U-shaped groove bearing 7 and are connected to the docking ring 33, and the outer sides of the two docking rings 33 are threadedly connected to nuts 34.

[0037] A limit block 8 is provided at a position corresponding to the mounting groove 4 at one end of the U-shaped hook body 2 away from the electric telescopic cylinder 1 .

[0038] A connecting piece 9 is connected to the top of the U-shaped hook body 2 . A hanging hole 10 is provided on the connecting piece 9 . The hanging hole 10 is used for hanging the U-shaped hook body 2 by the hoisting device.

[0039] As an example, the ball guide sleeve 5 is a copper-based ball guide sleeve 5, which has low friction.

[0040] As an example, the electric telescopic cylinder 1 is fixedly connected to the U-shaped hook body 2 by fasteners; the inner surface of the U-shaped hook body 2 for connecting to the electric telescopic cylinder 1 is provided with a movable groove 11, and the movable groove 11 provides an operating space for installing and disassembling the electric telescopic cylinder 1.

[0041] As an example, the lower end opening of the U-shaped hook body 2 is trumpet-shaped.

[0042] In the electric unhooking device, mounting grooves 4 are provided at both ends of the U-shaped hook body 2, and two ball guide sleeves 5 provided with multiple steel balls 6 are respectively installed in the mounting grooves 4, and the steel balls 6 roll with the surface of the telescopic rod of the electric telescopic cylinder 1, so that the sliding friction is converted into rolling friction, thereby reducing the friction force that needs to be overcome when the telescopic rod of the electric telescopic cylinder 1 is retracted; the U-shaped hook 32 is used to hang the telescopic steel cage, and then the connecting bolt 31 is used to connect the docking ring 33 and the U-shaped groove bearing 7 and is fixed with a nut 34; when lifting, the telescopic rod of the electric telescopic cylinder 1 passes through the bracket assembly 3 and forms rolling friction with the annular groove of the U-shaped groove bearing 7, thereby reducing the friction force that needs to be overcome when the telescopic rod of the electric telescopic cylinder 1 is separated from the telescopic steel cage (after the telescopic rod of the electric telescopic cylinder 1 is retracted, the U-shaped groove bearing 7 and the bracket assembly 3 are separated together with the telescopic steel cage), thereby facilitating separation and unhooking.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric unhooking device for telescopic steel cage hoisting, characterized in that: include: An electric telescopic cylinder (1), a U-shaped hook body (2), a hook assembly (3) and a U-shaped groove bearing (7); The U-shaped hook body (2) has an opening facing downward; the electric telescopic cylinder (1) is mounted on one side of the U-shaped hook body (2); a mounting groove (4) is provided at the open end of the U-shaped hook body (2) and extends transversely through the U-shaped hook body (2); a ball guide sleeve (5) is mounted on the inner wall of the mounting groove (4); the telescopic rod of the electric telescopic cylinder (1) extends into the ball guide sleeve (5) and contacts the steel ball (6) on the surface of the ball guide sleeve (5); The outer circumferential surface of the U-shaped groove bearing (7) is provided with an annular groove; a hanging assembly (3) for hanging a telescopic steel cage is connected below the U-shaped groove bearing (7); The U-shaped groove bearing (7) is hung in the opening of the U-shaped hook body (2) via the telescopic rod of the electric telescopic cylinder (1), so that the annular groove on the outer circumferential surface of the U-shaped groove bearing (7) and the surface of the telescopic rod of the electric telescopic cylinder (1) are in rolling engagement.

2. The electric unhooking device for telescopic steel cage hoisting according to claim 1 is characterized in that: The hanging assembly (3) comprises a connecting bolt (31) and a U-shaped hanging buckle (32); The connecting bolt (31) is coaxially sleeved in the center hole of the U-shaped groove bearing (7); The two ends of the upper portion of the U-shaped hanging buckle (32) are respectively connected to the two ends of the connecting bolt (31) extending out of the U-shaped groove bearing (7).

3. The electric unhooking device for telescopic steel cage hoisting according to claim 2 is characterized in that: Both ends of the upper portion of the U-shaped hook (32) are connected to docking rings (33); The connecting bolt (31) comprises a middle polished rod and threaded portions at both ends, and the connecting bolt (31) passes through the U-shaped groove bearing (7) through the middle polished rod; the threaded portions at both ends of the connecting bolt (31) extend out of the U-shaped groove bearing (7) and are connected to the docking rings (33), and nuts (34) are threadedly connected to the outer sides of the two docking rings (33).

4. The electric unhooking device for telescopic steel cage hoisting according to any one of claims 1 to 3, characterized in that: A limiting block (8) is provided at a position corresponding to the mounting groove (4) at one end of the U-shaped hook body (2) away from the electric telescopic cylinder (1).

5. The electric unhooking device for telescopic steel cage hoisting according to any one of claims 1 to 3, characterized in that: The top of the U-shaped hook body (2) is provided with a connecting piece (9), and a hanging hole (10) is provided on the surface of the connecting piece (9).

6. The electric unhooking device for telescopic steel cage hoisting according to claim 5 is characterized in that: The connecting piece (9) is located at the middle position of the top of the U-shaped hook body (2).

7. The electric unhooking device for telescopic steel cage hoisting according to any one of claims 1 to 3, characterized in that: The ball guide sleeve (5) is a copper-based ball guide sleeve.

8. The electric unhooking device for telescopic steel cage hoisting according to any one of claims 1 to 3, characterized in that: The electric telescopic cylinder (1) is fixedly connected to the U-shaped hook body (2) via a fastener.

9. The electric unhooking device for telescopic steel cage hoisting according to claim 8 is characterized in that: The inner surface of the U-shaped hook body (2) for connecting to the electric telescopic cylinder (1) is provided with a movable groove (11).

10. The electric unhooking device for telescopic steel cage hoisting according to any one of claims 1 to 3, characterized in that: The lower end opening of the U-shaped hook body (2) is horn-shaped.

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