CN201347336Y

CN201347336Y - Load lifting limiter

Info

Publication number: CN201347336Y
Application number: CNU2009200383342U
Authority: CN
Inventors: 李淑珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-14
Filing date: 2009-01-14
Publication date: 2009-11-18
Anticipated expiration: 2019-01-14

Abstract

The utility model discloses a load lifting limiter used on a lifting apparatus. The load lifting limiter comprises a proving ring used for inducing the force bearing of steel wire ropes, and an electric controller. A steel wire rope locking and connecting device is arranged between the proving ring and the steel wire ropes, can clamp and fix the steel wire ropes arranged on upper and lower sides of the proving ring respectively, is connected to the upper and the lower end parts of the proving ring, and simultaneously keeps the steel wire ropes between two fixed ends at the loosening state. The steel wire rope locking and connecting device can adopt the structure that a wedge sleeve is combined with a wedge block, or an upper wedge-shaped pressure board and a lower wedge-shaped pressure board are combined with a bolt or a U-shaped bolt. The load lifting limiter has the advantages of convenient assembly and disassembly, reasonable structure, safety, reliability and low manufacturing cost, and is applicable to electric hoists, single beam cranes, and other bridge-type lifting equipment.

Description

Load lifting limiter

Technical field

The utility model relates to a kind of safety guard that is mainly used on the weight-lifting equipment, particularly relates to a kind of load lifting limiter that guarantees safe lifting, non-overloading operation.

Background technology

During the elevator machinery operation, often relate to overweight article, have bigger danger, in case accident occurs, directly jeopardize operating personnel's life security, as seen, load lifting limiter is requisite important safety parts in the elevator machinery.At present, at electric block, single-beam hang and elevator machinery such as bridge-type class in, be installed in the load lifting limiter commonly used of steel rope fixed end or dead end, as Chinese utility model patent ZL90203350.6, name is called the described structure of a kind of load lifting limiter prospectus, it is by pylon, the main proving ring that constitutes by ring body and shell fragment, composition such as electric controller and cover of wedge, during installation, to dismantle some parts and dress steel rope thereon in the electric block earlier, and then with in the ears or side handles of a utensil on the pylon insertion electric block circular housing of proving ring upper end, steel rope is packed in the cover of wedge; Such killer needs existing equipment is changed and could use on the one hand when mounted, installs loaded down with trivial detailsly, so is not easy to install and use; In case proving ring comes off on the other hand, steel rope also will come off thereupon, and will be also very unfavorable to safety like this.

The utility model content

The technical problems to be solved in the utility model provides a kind of not only easy accessibility, and load lifting limiter rational in infrastructure, safe and reliable, with low cost.

For solving the problems of the technologies described above, a kind of load lifting limiter of the present utility model, comprise and be used to respond to stressed proving ring of steel rope and electric controller, its improvement is: be provided with steel rope locking connecting device between described proving ring and steel rope, this steel rope locking connecting device can will be positioned at the steel rope difference clamp fitting of these upper and lower both sides of proving ring, and be connected on the upper end and bottom of this proving ring, simultaneously the steel rope between described two fixed ends is remained on relaxed state.

As a kind of improvement of the present utility model, described steel rope locking connecting device can be made of the clamp assembly that cover of wedge, voussoir form, and described clamp assembly is arranged on the upper and lower both sides of described proving ring, and is rotationally connected by described cover of wedge and described proving ring; Described cover of wedge is provided with the opening for described steel wire penetrating.

As another kind of improvement the of the present utility model, described steel rope locking connecting device can be made of the clamp assembly that last webge clamp, following webge clamp, bolt form, and described clamp assembly is arranged on the upper and lower both sides of described proving ring.

As another improvement of the present utility model, described steel rope locking connecting device can be made of at least two clevis bolts that are arranged on the upper and lower both sides of described proving ring.

After adopting such structure, because described steel rope locking connecting device, the utility model preferably adopts cover of wedge and voussoir, upper and lower webge clamp and bolt or clevis bolt, to be positioned at the steel rope difference clamp fitting of the upper and lower both sides of proving ring, and be connected on the upper end and bottom of this proving ring, simultaneously the steel rope between described two fixed ends is remained on relaxed state; Therefore, when load lifting limiter is installed, need not dismantle any parts and dress steel rope thereon in the electric block, can be directly installed on the steel rope, thus make install, dismounting is all very convenient, structure is more reasonable, and has reduced productive costs; Owing to adopted upper and lower webge clamp, after steel rope was attenuated by pulling force, the following webge clamp wedging steel rope that can slide was as long as once tighten fixing just passable.In addition, because the load lifting limiter of this spline structure is therefore safe and reliable even proving ring loose or dislocation or fracture can not cause coming off of steel rope yet, ensured operating personnel's safety.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.

Fig. 1 is the structural representation of a kind of load lifting limiter of the present utility model.

Fig. 2 is the front view of the cover of wedge among Fig. 1.

Fig. 3 is along the section-drawing of A-A line among Fig. 2.

Fig. 4 is the left view of Fig. 2.

Fig. 5 is the front view of the voussoir among Fig. 1.

Fig. 6 is the birds-eye view of Fig. 5.

Fig. 7 is the structural representation of another kind of load lifting limiter of the present utility model.

Fig. 8 is the left view of Fig. 7.

Fig. 9 is the front view of the last webge clamp among Fig. 7.

Figure 10 is the left view of Fig. 9.

Figure 11 is the front view of the following webge clamp among Fig. 7.

Figure 12 is the left view of Figure 11.

Figure 13 is the birds-eye view of Figure 11.

Figure 14 is the structural representation of another load lifting limiter of the present utility model.

The specific embodiment

Referring to Fig. 1 to Figure 14, a kind of load lifting limiter, comprise and be used for measuring steel wire rope 1 stressed proving ring 2 and electric controller (not shown), between described proving ring 2 and steel rope 1, be provided with steel rope locking connecting device, this steel rope locking connecting device can will be positioned at the steel rope 1-1 of these proving ring 2 upper and lower both sides, 1-2 is clamp fitting respectively, and be connected on the upper end 2-1 and bottom 2-2 of this proving ring 2, with described two fixed end 1-1, the steel rope 1-3 between the 1-2 remains on relaxed state simultaneously.Described electric controller can be made an integral body with proving ring 2, also can place separately.

Referring to Fig. 1 to Fig. 6, described steel rope locking connecting device can be made of the clamp assembly 3 that cover of wedge 3-1, voussoir 3-2 form, described clamp assembly 3 is arranged on the upper and lower both sides of described proving ring 2, on described cover of wedge 3-1 and described proving ring 2, corresponding through hole is set, in this through hole, penetrate bearing pin, described cover of wedge 3-1 and described proving ring 2 are rotationally connected; Also be provided with the opening 3-1-1 that passes for described steel rope 1 on the described cover of wedge 3-1.When mounted, only need the opening 3-1-1 that steel rope 1 is passed on the cover of wedge to put into cover of wedge 3-1, inserted wedge 3-2 clamps steel rope then, and simultaneously with two fixed end 1-1, the steel rope 1-3 between the 1-2 remains on relaxed state.

Referring to Fig. 7 to Figure 13, described steel rope locking connecting device can be made of the clamp assembly 4 that last webge clamp 4-1, following webge clamp 4-2, bolt 4-3 form, and described clamp assembly 4 is arranged on the upper and lower both sides of described proving ring 2.Vertically can be provided with groove 4-2-1 at described webge clamp 4-2 down, the shape of this groove 4-2-1 and the shape of described steel rope 1 are suitable, and it is more firm to compress like this.When mounted, only need with a plurality of webge clamp 4-1 of going up, following webge clamp 4-2 the steel rope 1-1 that is positioned at these proving ring 2 upper and lower both sides, 1-2 is fixed clampingly on the upper end 2-1 and bottom 2-2 of this proving ring 2 by a plurality of bolt 4-3 respectively, and with two fixed end 1-1, the steel rope 1-3 between the 1-2 remains on relaxed state and gets final product.

Referring to Figure 14, described steel rope locking connecting device can be made of at least two clevis bolts 5 that are arranged on described proving ring 2 upper and lower both sides, and its mounting structure is similar to Fig. 7.

Some features that are appreciated that above-mentioned three kinds of embodiments can be exchanged, and for example, load lifting limiter shown in Figure 7 can adopt webge clamp, the steel rope of webge clamp, bolt and U-bolt formation locks connecting device down; The steel rope that can adopt cover of wedge, voussoir and U-bolt to constitute at the load lifting limiter shown in Fig. 1 locks connecting device; Therefore; no matter do any variation on its shape or structure, every utilization all drops within the protection domain of the present utility model at the load lifting limiter that steel rope locking connecting device is set and make steel rope between two clamp assemblies remain on relaxed state between proving ring and the steel rope.

Claims

1, a kind of load lifting limiter, comprise the proving ring (2) and the electric controller that are used to respond to steel rope (1) force-bearing situation, it is characterized in that: between described proving ring (2) and steel rope (1), be provided with steel rope locking connecting device, this steel rope locking connecting device can will be positioned at the steel rope (1-1 of the upper and lower both sides of this proving ring (2), 1-2) difference clamp fitting, and be connected on the upper end (2-1) and bottom (2-2) of this proving ring (2), (1-1,1-2) steel rope between (1-3) remains on relaxed state with described two fixed ends simultaneously.

2, load lifting limiter according to claim 1, it is characterized in that: described steel rope locking connecting device is made of the clamp assembly (3) that cover of wedge (3-1), voussoir (3-2) form, described clamp assembly (3) is arranged on the upper and lower both sides of described proving ring (2), and is rotationally connected by described cover of wedge (3-1) and described proving ring (2); Described cover of wedge (3-1) is provided with the opening (3-1-1) that passes for described steel rope (1).

3, load lifting limiter according to claim 1, it is characterized in that: described steel rope locking connecting device is made of the clamp assembly (4) that last webge clamp (4-1), following webge clamp (4-2), bolt (4-3) form, and described clamp assembly (4) is arranged on the upper and lower both sides of described proving ring (2).

4, load lifting limiter according to claim 3 is characterized in that: described webge clamp (4-2) down vertically is provided with groove (4-2-1), and the shape of shape of this groove (4-2-1) and described steel rope (1) is suitable.

5, load lifting limiter according to claim 1 is characterized in that: described steel rope locking connecting device is made of at least two clevis bolts (5) that are arranged on the upper and lower both sides of described proving ring (2).