CN215995348U

CN215995348U - Lifting brake type safety belt fixing device for rigid contact net

Info

Publication number: CN215995348U
Application number: CN202023293421.8U
Authority: CN
Inventors: 候明哲; 张璞; 孙哲; 张振兴; 张雪松
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-03-11
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a lifting brake type safety belt fixing device for a rigid contact net, which comprises a main body, two lifting devices and a lifting adjusting device, wherein the two lifting devices are arranged on the main body; the lifting device comprises an up-and-down moving groove, a moving piece, a hanging lug, a rotating shaft fixing hole and a moving shaft fixing hole, wherein an L-shaped hook which extends to the outer side of the main body is formed at the upper end of the moving piece; two groups of springs are arranged at the top end of the main body; the upper end of the spring is propped below the horizontal part of the hook; a rotating shaft is arranged in the rotating shaft fixing hole, an upper lifting rod is arranged on the rotating shaft, a friction pad is arranged at one end of the upper lifting rod and is positioned below the bottom surface of the busbar, and the other end of the upper lifting rod extends into the moving shaft fixing hole and is provided with a kidney-shaped hole; the waist-shaped hole is internally provided with a moving shaft, and two ends of the moving shaft are fixed on the inner wall of the moving shaft fixing hole. When the safety device is used, once an operator falls, one end of the lifting rod with the friction pad is lifted upwards and pressed to the bottom surface of the busbar for braking, so that the upper wheel is prevented from continuously rolling and generating danger.

Description

Lifting brake type safety belt fixing device for rigid contact net

Technical Field

The utility model relates to the field of subway maintenance safety accessories, in particular to a lifting brake type safety belt fixing device for a rigid contact network.

Background

The safety belt is required to be worn during subway maintenance, the bus bar is provided with a positioning point every 8-10m, the safety belt is required to be tied on the bus bar during the subway maintenance in the past, when a person walks, the safety belt is required to be pulled away on the bus bar, the safety belt is in a flat belt type or a rope type, certain resistance exists during walking, unsafe factors such as the fact that the person is pulled exist, the safety belt is required to be taken down when meeting the positioning point, the safety belt bypasses the positioning point and is fixed again, and time and labor are wasted. A chinese patent, having a patent number of "201920225392. X", a utility model patent entitled "a rigid catenary safety belt fixing aid" discloses a research result solving this problem in 2019, 12 months and 03 days. Although this patent can move on the busbar and avoids the problem of the anchor point being re-secured, in actual use, the worker finds that, in the event of a fall, the device hangs on the device, which continues to move on the busbar due to the swinging of the human body, causing danger to the human body.

Therefore, a fixing auxiliary device capable of braking in time when a human body falls is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lifting brake type safety belt fixing device for a rigid contact network, and solves the problem that the existing fixing auxiliary device for the safety belt of the rigid contact network cannot brake when a human body falls.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model relates to a lifting brake type safety belt fixing device for a rigid contact net, which comprises

A main body for straddling a lower side of the bus bar; the longitudinal section of the main body is U-shaped, the upper part of the main body is symmetrically provided with two rolling devices, and the lower part of the main body is provided with a lower wheel which can move up and down; the rolling device comprises a support shaft, an upper wheel arranged at the end part of the support shaft and a threaded sleeve formed on the shaft body of the support shaft, the upper wheel is positioned in the main body, and the support shaft penetrates through the side wall of the main body and is in threaded connection with the side wall of the main body through the threaded sleeve;

two lifting devices respectively arranged at two sides of the main body; the lifting device comprises an up-and-down moving groove arranged on the outer side of the main body, a moving member arranged in the moving groove, a hanging lug fixed on the moving member, a rotating shaft fixing hole formed in the side wall of the main body and a moving shaft fixing hole formed in the moving member, wherein an L-shaped hook extending to the outer side of the main body is formed at the upper end of the moving member; the top end of the main body is provided with two groups of springs which are respectively positioned at the top ends of the two U-shaped branches; the upper end of the spring is propped below the horizontal part of the hook; a rotating shaft is arranged in the rotating shaft fixing hole, an upper lifting rod is arranged on the rotating shaft, a friction pad is arranged at one end of the upper lifting rod and is positioned below the bottom surface of the busbar, and the other end of the upper lifting rod extends into the moving shaft fixing hole and is provided with a waist-shaped hole; a moving shaft is arranged in the waist-shaped hole, and two ends of the moving shaft are fixed on the inner wall of the moving shaft fixing hole;

and a lifting adjusting device arranged at the lower end of the main body; the lifting adjusting device comprises a lifting bolt and a clamping support, the lifting bolt is in threaded connection with the lower end of the main body, the clamping support is movably connected to the top of the lifting bolt, an annular groove is formed in the middle of the lower wheel, and the clamping support is supported below the annular groove of the lower wheel.

Furthermore, one end of the supporting shaft, which is positioned on the outer side of the main body, is prismatic, and a rotating block is sleeved on the supporting shaft.

Furthermore, each side of the main body is provided with two moving grooves which are arranged in an axial symmetry manner; the upper end of each moving part is provided with two subsections; and two hooks are formed on each moving piece and are respectively positioned at the top ends of the two parts.

Still further, each moving member is provided with two hangers.

Still further, the card support is arc-shaped.

Still further, the top of jack bolt with card holds in the palm rotatable coupling.

Furthermore, each thread sleeve is connected with two spiral rings in a threaded manner, and the two spiral rings are respectively positioned on two sides of the side wall of the main body.

Compared with the prior art, the utility model has the following beneficial technical effects:

the movable parts capable of moving up and down are arranged on the two sides of the main body, the hangers are arranged on the movable parts, when an operator falls, the movable parts are driven to move down, the movable shaft moves down along with the movable parts, the movable shaft moves in the waist-shaped hole, mechanical dead angles are avoided, one end of the upper lifting rod is driven to move down, the end with the friction pad is driven to lift up by taking the rotating shaft as a fulcrum, the friction pad is pressed to the bottom surface of the busbar for braking, and the danger caused by continuous rolling of the upper wheel is avoided; and the couple prevents that the moving member atress from breaking away from the main part when too big, strengthens the security.

Drawings

The utility model is further illustrated in the following description with reference to the drawings.

Fig. 1 is a schematic front view of the lifting brake type safety belt fixing device for the rigid catenary of the present invention;

fig. 2 is a schematic side view of the lifting brake type safety belt fixing device for the rigid catenary of the utility model;

description of reference numerals: 1. a main body; 2. a lower wheel; 3. a support shaft; 4. an upper wheel; 5. a threaded sleeve; 6. a moving groove; 7. a moving member; 701. dividing; 8. hanging a lug; 9. hooking; 10. a spring; 11. a friction pad; 12. a lifting bolt; 13. clamping and supporting; 14. a ring groove; 15. rotating the block; 16. a spiro ring; 17. a rotating shaft fixing hole; 18. a movable shaft fixing hole; 19. a rotating shaft; 20. lifting the rod; 21. a kidney-shaped hole; 22. a movable shaft; 23. a bus bar.

Detailed Description

As shown in fig. 1 and 2, a specific embodiment of a lifting brake type safety belt fixing device for a rigid catenary includes a main body 1 straddling a lower side of a busbar 23, two lifting devices respectively installed at both sides of the main body 1, and a lifting adjusting device installed at a lower end of the main body 1.

As shown in fig. 1 and 2, the longitudinal section of the main body 1 is U-shaped, two rolling devices are symmetrically mounted on the upper portion of the main body 1, each rolling device comprises a support shaft 3, an upper wheel 4 rotatably mounted at the end of the support shaft 3, and a threaded sleeve 5 formed on the shaft body of the support shaft 3, the upper wheel 4 is located inside the main body 1, the support shaft 3 penetrates through the side wall of the main body 1 and is in threaded connection with the side wall of the main body 1 through the threaded sleeve 5, the position of the upper wheel inside the main body can be adjusted by rotating the support shaft, and the upper wheel can be pressed on the upper side of the busbar 23 and rolls along the busbar. One end of the supporting shaft 3, which is positioned on the outer side of the main body 1, is prismatic, and is sleeved with a rotating block 15, so that the rotating block can be conveniently rotated by hands to change the position of the upper wheel. Each thread bushing 5 is in threaded connection with two spiral rings 16, the two spiral rings 16 are respectively located on two sides of the side wall of the main body 1, when the position of the upper wheel is adjusted, the two spiral rings on each side are rotated to enable the two spiral rings to be far away from the side wall of the main body, when the position of the upper wheel is adjusted in place, the spiral rings are rotated to enable the spiral rings to be close to the side wall of the main body, the thread bushings are located, and the position of the upper wheel is prevented from being changed randomly. The lower part of the main body 1 is provided with a lower wheel 2 which can move up and down, specifically, the lower wheel is arranged on a rotating shaft, and two ends of the rotating shaft are arranged on the inner wall of the main body which can move up and down, which is the prior art and is not described herein any more, so that the lower wheel can move up and down. Lifting adjusting device includes threaded connection at the lifting bolt 12 of main part lower extreme and rotationally connects the card at lifting bolt 12 top holds in the palm 13, annular 14 has been seted up at 2 middle parts of lower round, the card holds in the palm 13 and is the arc, the card holds in the palm 13 top is in the annular 14 below of lower round 2, and rotatory lifting bolt can make lifting bolt's top reciprocate to drive the card and hold in the palm and reciprocate, and then drive the lower round and reciprocate, make the annular pressure of lower round in the bottom surface of busbar, prevent that the main part from taking place shake from top to bottom when moving along the busbar along with the upper round.

The lifting device comprises an up-and-down moving groove 6 formed on the outer side of the main body, a moving member 7 installed in the moving groove 6, a hanging lug 8 fixed on the moving member 7, a rotating shaft fixing hole 17 formed in the side wall of the main body 1 and a moving shaft fixing hole 18 formed in the moving member 7. Specifically, two moving grooves 6 are formed in each of two outer sides of the main body 1, and the two moving grooves 6 are arranged in axial symmetry and are respectively located on the front side and the rear side of the rolling device. Two subsections 701 are formed at the upper end of each moving part 7 in the two moving parts on the two sides of the main body, and the two subsections 701 are respectively positioned in the two corresponding moving grooves 6, so that the two moving parts and the two subsections can move up and down in the two moving grooves. The upper end of the moving part 7 is formed with an L-shaped hook 9 which extends to the outer side of the main body 1, so that the moving part is prevented from being separated from the main body under the action of large tensile force. Two groups of springs 10 are fixed at the top end of the main body 1 and are respectively positioned at the top ends of the two U-shaped branches. Specifically, two hooks 9 are formed on each moving member 7 and are respectively located at the top ends of the two parts 701, the two hooks are respectively located on the front side and the rear side of the rolling device, the number of each group of springs is also two, and the two springs on the same branch of the main body are respectively located below the horizontal portions of the two hooks to provide upward elastic force for the moving member. A rotating shaft 19 is rotatably installed in the rotating shaft fixing hole 17, and a lifting rod 20 is fixed to the rotating shaft 19 so as to be rotatable about the rotating shaft. One end of the upper lifting rod 20 is fixed with a friction pad 11 and is positioned below the bottom surface of the busbar 23, the other end of the upper lifting rod extends into the movable shaft fixing hole 18 and is provided with a waist-shaped hole 21, a movable shaft 22 is arranged in the waist-shaped hole 21, and two ends of the movable shaft 22 are fixed on the inner wall of the movable shaft fixing hole 17. When the movable shaft moves downwards along with the moving piece, the movable shaft moves in the waist-shaped hole to avoid mechanical dead angles, one end of the upper lifting rod is driven to move downwards, the end with the friction pad is driven to lift upwards by taking the rotating shaft as a fulcrum, and the friction pad is pressed to the bottom surface of the busbar to brake.

The hangers on every moving member quantity is two, the ligature safety belt of being convenient for improves joint strength.

When the operator does not fall, the weight borne by the moving part is small, and the spring 10 is in a normal state; when the worker falls, the weight of the human body of the worker acts on the moving piece to drive the moving piece downwards, so that the spring 10 is in a compressed state, one end of the lifting rod, which is provided with the friction pad, is lifted upwards, the friction pad is pressed on the bottom surface of the busbar, and the danger caused by the fact that the upper wheel continuously rolls is prevented.

During the use, before the rolling device assembly, just assemble the moving member in the shifting chute of main part earlier, avoid assembling the rolling device and form and block, cause the moving member can not insert the shifting chute from the top. Then, a rolling device is assembled, the upper wheel is adjusted towards two sides, the main body is pushed upwards to enable the upper wheel to reach the upper part of the table top of the bus bar, the position of the upper wheel is adjusted to enable the upper wheel to be pressed on the upper part of the table top of the bus bar, and the spiral ring is locked. And then adjusting the lifting bolt to enable the lower wheel to be pressed on the bottom surface of the busbar. The safety belt can be used by fixing the safety belt on the hangers at the two sides of the main body.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A lifting brake formula safety belt fixing device for rigid contact net which characterized in that: comprises that

A main body (1) for straddling the lower side of the bus bar (23); the longitudinal section of the main body (1) is U-shaped, two rolling devices are symmetrically arranged at the upper part of the main body (1), and a lower wheel (2) is arranged at the lower part of the main body (1) in a manner of moving up and down; the rolling device comprises a supporting shaft (3), an upper wheel (4) arranged at the end part of the supporting shaft (3) and a threaded sleeve (5) formed on the shaft body of the supporting shaft (3), the upper wheel (4) is positioned in the main body (1), and the supporting shaft (3) penetrates through the side wall of the main body (1) and is in threaded connection with the side wall of the main body (1) through the threaded sleeve (5);

two lifting devices respectively arranged at two sides of the main body (1); the lifting device comprises an up-and-down moving groove (6) arranged on the outer side of the main body (1), a moving member (7) arranged in the moving groove (6), a hanging lug (8) fixed on the moving member (7), a rotating shaft fixing hole (17) formed in the side wall of the main body (1) and a moving shaft fixing hole (18) formed in the moving member (7), wherein an L-shaped hook (9) extending to the outer side of the main body (1) is formed at the upper end of the moving member (7); two groups of springs (10) are arranged at the top end of the main body (1) and are respectively positioned at the top ends of the two U-shaped branches; the upper end of the spring (10) is propped against the lower part of the horizontal part of the hook (9); a rotating shaft (19) is arranged in the rotating shaft fixing hole (17), an upper lifting rod (20) is arranged on the rotating shaft (19), a friction pad (11) is arranged at one end of the upper lifting rod (20) and is positioned below the bottom surface of the busbar (23), and the other end of the upper lifting rod extends into the moving shaft fixing hole (18) and is provided with a waist-shaped hole (21); a moving shaft (22) is arranged in the waist-shaped hole (21), and two ends of the moving shaft (22) are fixed on the inner wall of the moving shaft fixing hole (18);

and a lifting adjusting device arranged at the lower end of the main body (1); the lifting adjusting device comprises a lifting bolt (12) and a clamping support (13), wherein the lifting bolt (12) is in threaded connection with the lower end of the main body (1), the clamping support (13) is movably connected to the top of the lifting bolt (12), an annular groove (14) is formed in the middle of the lower wheel (2), and the clamping support (13) is supported below the annular groove (14) of the lower wheel (2).

2. The upward brake type safety belt fixing device for the rigid catenary as claimed in claim 1, wherein: one end of the supporting shaft (3) positioned on the outer side of the main body (1) is prismatic, and a rotating block (15) is sleeved on the supporting shaft.

3. The upward brake type safety belt fixing device for the rigid catenary as claimed in claim 1, wherein: each side of the main body (1) is provided with two moving grooves (6), and the two moving grooves (6) are arranged in axial symmetry; the upper end of each moving element (7) is provided with two subsections (701); two hooks (9) are formed on each moving element (7) and are respectively positioned at the top ends of the two sub-parts (701).

4. The upward brake type safety belt fixing device for the rigid catenary as claimed in claim 1, wherein: each moving piece (7) is provided with two hanging lugs (8).

5. The upward brake type safety belt fixing device for the rigid catenary as claimed in claim 1, wherein: the clamping support (13) is arc-shaped.

6. The upward brake type safety belt fixing device for the rigid catenary as claimed in claim 1, wherein: the top end of the lifting bolt (12) is rotatably connected with the clamping support (13).

7. The upward brake type safety belt fixing device for the rigid catenary as claimed in claim 1, wherein: each thread sleeve (5) is connected with two spiral rings (16) in a threaded mode, and the two spiral rings (16) are located on two sides of the side wall of the main body (1) respectively.