CN201291007Y

CN201291007Y - Tower operation drop-proof safety device from high place

Info

Publication number: CN201291007Y
Application number: CNU2008201585879U
Authority: CN
Inventors: 唐小慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-25
Filing date: 2008-09-25
Publication date: 2009-08-19
Anticipated expiration: 2018-09-25

Abstract

The utility model discloses an anti-drop safety device used in operations on a pole tower high above the ground. Three segments of arc round wires with equal length at the upper end and the lower end of the inner wall of a slider are combined into an open round ring which slide along the outer round surface of a round bumper; an eccentric wheel clamping mechanism and a wedge clamping mechanism clamp the bumper; the angle between the bevel of the wedge and the direction of the gravity is 5-15 degrees; and the clamping surface of the eccentric wheel, which clamps the bumper, and the clamping surface of the wedge, which clamps the bumper, are circular arc surfaces which match with the round surfaces of the bumper. During the normal operation, the anti-drop safety device can slide freely without dead point, and in the case of accidental tenesmus, the large contact faces are clamped doubly and the drop distance is shorter, so the anti-drop safety device is safer.

Description

Shaft tower operation high-altitude falling-proof safety device

Technical field

The utility model relates to a kind of safety device that is applied to shaft tower work high above the ground fall arrest, especially the safety device of high voltage transmission line shaft tower work high above the ground fall arrest.

Background technology

What at present, known shaft tower work high above the ground falling-proof safety device adopted is that slide block inwall upper and lower side circumference uniform distribution three decorative pearls on top of an official cap withstand the Eccentric Clamping Mechanism clamping bumper bar fall arrest that circular bumper bar outer round surface slides and contacts with point along bumper bar.Because on the shaft tower and the outer round surface defective of bumper bar own, the bumper bar outer round surface has pit to the bumper bar extended immobilization in the open air, the decorative pearl on top of an official cap is absorbed in pit easily and forms the slip dead point, causes sliding motionless defective; The eccentric clamp mechanism of some contact is because the some contact area is little, and slide block and bumper bar frictional force are little, has slide block tenesmus distance or can't clip once in a while and drop, because to put contact gripping pressure big, member is easy deformation also, thereby has potential safety hazard simultaneously.

Summary of the invention

In order to overcome the deficiency of existing shaft tower work high above the ground falling-proof safety device, the utility model provides a kind of shaft tower work high above the ground falling-proof safety device, slide block inwall upper and lower side adopts three sections isometric curved circular silks to be combined into the opening annulus and encircles circular bumper bar outer round surface gently and slide along bumper bar, the curved circular silk can not be absorbed in pit, slide block slides does not have the dead point freely, by Eccentric Clamping Mechanism and the tight bumper bar of the tight mechanism of voussoir clamp mechanism double fastener double fastener, double effectively preventing fallen, and unexpected tenesmus distance is shorter safer.

Technical scheme

The scheme that its technical problem that solves the utility model adopts is: the utility model adopts at slide block inwall upper and lower side, and three sections isometric curved circular silks are combined into the opening annulus and encircle circular bumper bar outer round surface gently and slide along bumper bar; Eccentric Clamping Mechanism and the tight bumper bar of the tight mechanism of voussoir clamp mechanism double fastener double fastener, voussoir inclined-plane and gravity direction angle are 5～15 °, eccentric wheel folder bumper bar clamping area and voussoir folder bumper bar clamping area are the arc surfaces that matches with the bumper bar outer round surface.Three sections isometric curved circular silks are combined into the opening annulus and slide along circular bumper bar outer round surface, though circular arc line friction mode frictional resistance increases, seldom can disregard the operation influence, are absorbed in the pit dead point and realize being free to slide but can effectively overcome.Eccentric wheel folder bumper bar clamping area is that the arc surface that matches with the bumper bar periphery has not only been inherited eccentric wheel and clamped advantage, and has further been improved component strength, increased clamping force by the line contact.Increase voussoir and clamp, increased the clamping dynamics, unexpected tenesmus distance is shorter safer.

Of the present utility modelly have a mind to effect and be, can slide more freely by safety device when the shaft tower work high above the ground, the tenesmus distance is shorter during accidental falling, and double strick precaution is safer, and is simple in structure.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described further.

Fig. 1 is the sectional structure chart of facing of the present utility model.

Fig. 2 is the right TV structure figure of Fig. 1.

Fig. 3 is the A-A cross-sectional view of Fig. 1.

Fig. 4 is the B-B cross-sectional view of Fig. 1.

Fig. 5 is the C-C cross-sectional view of Fig. 1.

Fig. 6 is the face upwarding assumption diagram of Fig. 1.

1. top shoes, 2. gib blocks, 3. circular bumper bar 4. annular grooves 5. curved circular silks 6. hinge seats 7. torsion springs 8. joint pins 9. insurance button holes 10. eccentric wheels 11. screws 12. springs 13. back-up rings, 14. inclined-planes, 15. voussoirs, 16. annular grooves, 17. sliding blocks, 18. screws, 19. grooves, 20. securing members, 21. clamping areas, 22. clamping areas, 23. plug screws, 24. springs, 25. screw mandrels, 26. nuts among the figure

The specific embodiment

In Fig. 1, gib block (2) is fixed on the bumper bar (3); Top shoe (1) and sliding block (17) diameter of bore are more slightly larger than bumper bar maximum outside diameter; Curved circular silk (5) is installed on top shoe (1), annular groove (4) on the sliding block (17), (16) in, the annular groove width and the degree of depth are slightly larger than round filament diameter, detailed construction as shown in Figure 5, the protruding side of curved circular silk (5) center welding screw mandrel (25), screw mandrel (25) is gone up cover nut (26), spring (24) withstands nut (26), plug screw (23) withstands spring (24), curved circular silk (5) can be in annular groove (4), (16) flexible in along spring (24) direction, three sections same curved circular silks (5) are combined into the opening annulus, internal radius is slightly larger than the bumper bar external diameter, annular groove (4), (16) each annulus in, two circular ring structure sizes are the same, curved circular silk (5) gently is pressed on the bumper bar outer round surface or leaves minim gap and exceed top shoe (1) and sliding block (17) endoporus wall with the bumper bar outer round surface in the elastic force effect of spring (22), effect is to go up at bumper bar (3) at top shoe (1) and sliding block (17) that top shoe (1) and sliding block (17) inner hole wall do not touch bumper bar (3) in the sliding process, curved circular silk (5) bumper bar (3) that slightly rubs, friction area is little, frictional force is equally little, and realizes being free to slide; Hinge seat (6) is same integral body with top shoe (1), joint pin (8) is fixed on the hinge seat with screw (18) and maintains static (as shown in Figure 2), eccentric wheel (10) is installed on the joint pin (8), and torsion spring (7) is housed, one end of torsion spring (7) is fixed on the joint pin (8), one end is fixed on the eccentric wheel (10), the design of eccentric wheel (10) handle end has insurance button hole (9) to be used to lock safety rope or safety fastener, eccentric wheel (10) folder bumper bar clamping area (21) is the arc surface (as shown in Figure 3) that matches with bumper bar (3) periphery, under nature, twisting force by torsion spring (7), eccentric wheel handle end makes progress, and clamping area (21) does not touch bumper bar (3); Voussoir (15) folder bumper bar clamping area (22) is the arc surface (as shown in Figure 4) that matches with bumper bar (3) periphery equally, voussoir (15) is connected with screw (11) on the inclined-plane, be with spring (12) and back-up ring (13) on the screw (11), screw (11) is positioned at groove (19) (see figure 2), the effect of screw (11) is to connect and location voussoir (15), voussoir (15) is when slide (14) along the inclined-plane, screw (11) slides in groove (19), when voussoir (15) is positioned at inclined-plane (14) lowermost end, require voussoir (15) folder bumper bar clamping area (22) outline to exceed top shoe (1) endoporus wall and be lower than curved circular silk (5) and stretch out annular groove (4), interior annulus limit when (16) being combined into the opening annulus, when normal the slip, clamping area (22) does not touch bumper bar (3); Inclined-plane (14) and gravity direction angle are 5～15 °, and top shoe (1) is consistent with profile with the interior hole dimension of sliding block (17), and top shoe (1) and sliding block (17) are with securing member (20) be fastened (concrete structure is as shown in Fig. 2 and Fig. 6).

The utility model is used for the fall arrest security protection of shaft tower operation high-altitude, and bumper bar (3) is fixed on the shaft tower by the fixed block of welding on it.

Upwards climbing, promote earlier screw (11) haul voussoir (15) to the inclined-plane lowermost end of (14), put top shoe (1) and sliding block (17) from the bottom of bumper bar (3), safety rope or safety fastener are locked in the insurance button hole (9), begin upwards climbing, safety rope hauls top shoe (1) and sliding block (17) upwards slides along bumper bar (3), eccentric wheel (10) folder bumper bar clamping area (21) does not touch bumper bar (3) under the effect of torsion spring (7) torsion, voussoir (15) is positioned at inclined-plane (14) lowermost end clamping area (22) and does not touch bumper bar (3) equally, have only curved circular silk (5) to be combined into opening annulus and the slight friction of bumper bar (3), without hindrance smoothly upwards climbing.

Move back downwards, after operation is finished, move back downwards, under the self gravitation effect, top shoe (1) and sliding block (17) be automatically to lower slider, and it is the same to slide up and down situation, and just change has taken place glide direction, moves back under without hindrance smoothly.

Accidental falling, top shoe (1) and sliding block (17) glide fast along bumper bar (3), under the effect of operator gravity, be bundled in operator safety rope on one's body and be locked in insurance button hole (9) and spur eccentric wheel (10) downwards suddenly, eccentric wheel (10) folder bumper bar clamping area (21) is pressed folder bumper bar (3); Curved circular silk (5) in eccentric wheel (10) below sliding block (17) annular groove (16) is pressed in the annular groove interior (16) simultaneously, voussoir (15) exceeds clamping area (22) the extrusion friction bumper bar (3) of top shoe (1) endoporus wall, voussoir (15) is subjected to and the rightabout upwards frictional force effect of top shoe (1) glide direction (14) upwards slip along the inclined-plane, inclined-plane (14) is 5～15 ° with the gravity direction angle, voussoir (15) is in the self-locking of wedge and upwards inclined-plane, frictional force effect lower edge (14) is not only upwards to lower slider, and more upwards slide along the inclined-plane voussoir (15) to press from both sides bumper bar (3) clamping force big more for pressure by (14); Because clamping area (21) and clamping area (22) are big with the clamping area of bumper bar (3), clamping force is big, under the double effect simultaneously of two clamping forces, just can clamp bumper bar (3) in the utmost point short time, tenesmus stops, and operator tenesmus distance is short, thereby reaches the security protection effect.After unexpected dangerous the elimination, upwards draw the handle end of eccentric wheel (10) just can unclamp eccentric wheel (10), upwards spur top shoe (1) again and just can unclamp voussoir (15), top shoe (1) and sliding block (17) just can slide up and down again like a cork.

Claims

1, a kind of shaft tower work high above the ground falling-proof safety device is characterized in that: slide block inwall upper and lower side adopts three sections isometric curved circular silks to be combined into the opening annulus, and the opening annulus slides along circular bumper bar outer round surface; Clamp bumper bar simultaneously by Eccentric Clamping Mechanism and voussoir clamp mechanism two clamp mechanism, realize dual fail-safe.

2, shaft tower work high above the ground falling-proof safety device according to claim 1 is characterized in that: slide block inwall upper and lower side adopts three sections isometric curved circular silks to be combined into the opening annulus, and every section curved circular silk all can stretch separately.

3, shaft tower work high above the ground falling-proof safety device according to claim 1, it is characterized in that: eccentric wheel folder bumper bar clamping area is the arc surface that matches with the bumper bar outer round surface, and voussoir folder bumper bar clamping area is the arc surface that matches with the bumper bar outer round surface.