CN215761714U

CN215761714U - Protection device for preventing non-return U-shaped shed leg from toppling

Info

Publication number: CN215761714U
Application number: CN202121318302.5U
Authority: CN
Inventors: 马守龙; 连传金; 朱先博; 李纪宝; 张寿朋; 丁锋
Original assignee: China Coal Xinji Energy Co Ltd
Current assignee: China Coal Xinji Energy Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-02-08
Anticipated expiration: 2031-06-11

Abstract

The utility model relates to a protection device for preventing a U-shaped shed leg from toppling, wherein the shed leg and a shed beam are connected together through two pairs of U-shaped clamp cables, bolts and nuts, and when the shed leg is dismounted, the protection device is arranged on one of the U-shaped clamp cables which is already loosened. Prevent protection device that non return U type canopy leg emptys includes: the protective device comprises two triangular iron sheets, a steel wire rope and a rope clamping head, wherein the triangular iron sheets are provided with two vertical surfaces, a bolt hole is formed in one surface, a connecting hole is formed in the other surface vertical to the triangular iron sheets, the steel wire rope is arranged between the connecting holes of the two triangular iron sheets, the connecting holes are respectively wound at two ends of the steel wire rope, the two ends of the steel wire rope are respectively fixed on the connecting holes through 2-3 rope clamping heads, the bolt holes of the two triangular iron sheets are sleeved on a bolt of a U-shaped clamping cable, a shed leg and a shed beam are temporarily fixed through a nut, and the elastic potential energy of the pressed U-shaped shed leg to be returned can be fully released by utilizing the protective device, so that the safety of shed returning personnel is ensured.

Description

Protection device for preventing non-return U-shaped shed leg from toppling

Technical Field

The utility model designs a secondary protection device, which is mainly used for a roadway with two roadways supporting a U-shaped shed and is designed for preventing U-shaped shed legs from toppling.

Background

When two roadways of the fully mechanized mining face are supported by U-shaped sheds, in order to ensure that the upper machine head and the lower machine head of the working face are smoothly pushed, the U-shaped shed legs on the coal wall side of the fan roadway need to be withdrawn in advance; under the influence of the advance pressure during the stoping of the working face, the U-shaped shed in the advance leg areas of the two roadways is seriously deformed under pressure, and after a clamping cable nut connected with the shed legs and the shed beam is detached during the shed leg returning period, the elastic potential energy of the shed legs due to the pressure can be suddenly released, so that the shed legs are suddenly toppled over to injure workers who return the shed legs. The existing safety protection measures are to adopt 8# iron wire binding to tie the shed legs to a rhombic net on a back side or arrange a mode that a specially-assigned person holds the U-shaped shed legs before returning the U-shaped shed leg to unload the cable clamping screw cap, so as to prevent the shed legs from suddenly toppling over to cause injury of operating personnel after the cable clamping screw is unloaded. Above-mentioned safety protection measure exists the iron wire ligature insecure or hold up the canopy leg personnel not concentrate on and cause the canopy leg and empty the potential safety hazard of hurting people.

Disclosure of Invention

The utility model aims to provide a protection device for preventing falling of U-shaped shed legs, which aims to prevent the accident that shed-returning personnel are injured by smashing due to sudden falling of the shed legs.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model relates to a protection device for preventing a U-shaped shed leg from toppling, wherein the shed leg and a shed beam are connected together through two pairs of U-shaped clamping cables, bolts and nuts, and when the shed leg is dismantled, the protection device for preventing the U-shaped shed leg from toppling is arranged on one pair of the U-shaped clamping cables which are already loosened, wherein: prevent protection device that non return U type canopy leg emptys includes: the steel wire rope shed comprises two triangular iron sheets, a steel wire rope and rope clamping heads, wherein the triangular iron sheets are provided with two vertical surfaces, a bolt hole is formed in one surface, a connecting hole is formed in the other surface vertical to the triangular iron sheets, the steel wire rope is arranged between the connecting holes of the two triangular iron sheets, the two ends of the steel wire rope respectively bypass the connecting holes, the two ends of the steel wire rope are respectively fixed on the connecting holes through a plurality of rope clamping heads, the bolt holes of the two triangular iron sheets are sleeved on a bolt of a U-shaped clamping cable, and shed legs and shed beams are temporarily fixed through nuts.

The utility model relates to a protection device for preventing a U-shaped shed leg from toppling, wherein: the number of the rope clamping heads is 2-3, and one end of the steel wire rope is respectively fixed on the connecting hole through the three rope clamping heads.

The utility model relates to a protection device for preventing a U-shaped shed leg from toppling, wherein: the shed legs and the shed beams are fixed together through an upper pair of U-shaped clamp cables, a lower pair of U-shaped clamp cables, bolts and nuts.

The utility model relates to a protection device for preventing a U-shaped shed leg from toppling, wherein: the pair of U-shaped clamp cables wraps the shed legs and the shed beam, and the shed legs and the shed beam are fixed together at two ends of the pair of U-shaped clamp cables through bolts and nuts.

The protection device for preventing the U-shaped shed leg from falling down effectively solves the potential safety hazard that the shed leg falls down to hurt people during the U-shaped shed leg returning process, and can fully release the elastic potential energy of the U-shaped shed leg to be returned due to the compression by utilizing the protection device, thereby ensuring the safety of shed returning personnel.

Drawings

FIG. 1 is a schematic view of the connection of shed legs and a shed beam;

FIG. 2 is a top enlarged view taken along line A-A of FIG. 1;

fig. 3 is a schematic top view of the protection device for preventing the U-shaped shed leg from falling in fig. 2.

In fig. 1 to 3, reference numeral 1 denotes a triangular iron piece; reference numeral 2 is a bolt hole; reference numeral 3 is a connection hole; reference numeral 4 is a wire rope; the reference number 5 is a rope chuck; reference numeral 6 is a bolt; reference numeral 7 is a nut; the number 8 is U-shaped clamp cable; and 9, a shed leg.

Detailed Description

As shown in the figures 1 and 3, the shed legs 9 and the shed beams 10 are connected together through two pairs of U-shaped clamp cables 8, bolts 6 and nuts 7, the shed legs 9 and the shed beams 10 are fixed together through two pairs of upper and lower U-shaped clamp cables 8, bolts 6 and nuts 7, the shed legs 9 and the shed beams 10 are wrapped by one pair of U-shaped clamp cables 8, and the shed legs 9 and the shed beams 10 are fixed together through the bolts 6 and the nuts 7 at two ends of one pair of U-shaped clamp cables 8.

When the shed legs 9 are dismantled, the protection device for preventing the U-shaped shed legs from falling is arranged on one U-shaped clamping cable 8, and the protection device for preventing the U-shaped shed legs from falling comprises: two triangle iron sheets 1, wire rope 4 and rope dop 5, triangle iron sheet 1 has two vertically faces, it has bolt hole 2 to open on one of them face, it has connecting hole 3 to open on another face perpendicular to it, be equipped with a wire rope 4 between two triangle iron sheet 1's connecting hole 3, connecting hole 3 is walked around respectively at wire rope 4's both ends, fix wire rope 4's both ends respectively on connecting hole 3 through three rope dop 5, the bolt hole 2 suit of two triangle iron sheets 1 is on the bolt 6 of a U type card cable 8, carry out temporary fixation with canopy leg 9 and canopy roof beam 10 through nut 7.

The protection device for preventing the U-shaped shed legs from toppling over is used according to the following steps:

1. during the U-shaped shed return, when the protection device for preventing the U-shaped shed legs from falling down is used, the two nuts 7 of the upper pair of U-shaped clamping cables 8 are firstly detached.

2. Then the bolt holes 2 of the two angle iron sheets 1 of the protection device for preventing the falling of the U-shaped shed legs are clamped on the two detached bolts 6, then the two nuts 7 detached in the step 1 are fastened on the bolts 6 again, the nuts 7 do not need to be too tight and can be flattened, and the U-shaped shed legs are caught by the steel wire ropes 4 of the protection device for preventing the falling of the U-shaped shed legs.

3. Then two nuts 7 of the bolt 6 of the U-shaped clamp cable 8 of the other one at the lower part of the shed leg 9 and the shed beam 10 are removed.

4. After the bolt 6 of the U-shaped clamp cable 8 at the upper part is removed and the elastic potential energy of the shed legs 9 is released, the nut 7 of the U-shaped clamp cable 8 at the lower part is removed, the secondary protection device is removed, and then the shed legs are removed.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and those skilled in the art should make various changes and modifications to the technical solution of the present invention without departing from the spirit of the present invention, which falls within the scope of the present invention defined by the claims.

Claims

1. The utility model provides a prevent protection device that U type canopy leg emptys that returns, canopy leg (9) and canopy roof beam (10) link together through two pairs of U type card cable (8), bolt (6) and nut (7), when demolising canopy leg (9), prevent that protection device dress that non return U type canopy leg emptys is on one of them pair of loose powerful U type card cable (8), its characterized in that: prevent protection device that non return U type canopy leg emptys includes: two triangle iron sheets (1), wire rope (4) and rope dop (5), triangle iron sheet (1) has two vertically faces, it has bolt hole (2) to open on one of them face, it has connecting hole (3) to open on another face perpendicular to it, be equipped with a wire rope (4) between connecting hole (3) of two triangle iron sheets (1), connecting hole (3) are walked around respectively at the both ends of wire rope (4), fix the both ends of wire rope (4) respectively on connecting hole (3) through a plurality of rope dop (5), bolt hole (2) suit of two triangle iron sheets (1) is on bolt (6) of a U type card cable (8), carry out temporary fixation with canopy leg (9) and canopy roof beam (10) through nut (7).

2. The protection device for preventing the falling of the U-shaped shed leg according to claim 1, wherein: the number of the rope clamping heads (5) is 6, and one end of the steel wire rope (4) is respectively fixed on the connecting hole (3) through the three rope clamping heads (5).

3. The protection device for preventing the falling of the U-shaped shed leg according to claim 2, wherein: the shed legs (9) and the shed beams (10) are fixed together through an upper U-shaped clamping cable (8), a lower U-shaped clamping cable (6) and a nut (7).

4. The protection device for preventing the falling of the U-shaped shed leg according to claim 3, wherein: the shed is characterized in that the shed legs (9) and the shed beam (10) are wrapped by the pair of U-shaped clamping cables (8), and the shed legs (9) and the shed beam (10) are fixed together at two ends of the pair of U-shaped clamping cables (8) through bolts (6) and nuts (7).