Safety protection device for feeding port of reversed loader

Abstract

The utility model relates to a safety protection device for a feeding port of a reversed loader, and aims to solve the risk that operators accidentally fall into the feeding port due to lack of effective safety protection in the prior art. The device comprises an n-shaped supporting frame fixed to the top of a feeding port of the reversed loader, protection switches are symmetrically arranged on the upper portion of the n-shaped supporting frame, and a trigger rod horizontally extends forwards; the top of the support frame is provided with a port for wiring. The pull-down cross rod is connected with the trigger rod through a connecting assembly, and limiting pieces for preventing displacement are arranged at the two ends of the pull-down cross rod. Belt strips are vertically arranged on the pull-down cross rod at intervals and are vertically arranged below a feeding port of the reversed loader. When a person accidentally falls in, the pull-down cross rod and the trigger rod can be driven to act by pulling the belt strip, and the protection switch is started to emergently stop operation of the reversed loader. The device is simple in structure, convenient to operate and quick in response, and the operation safety is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mining equipment technical field, concretely relates to a safety device for the material inlet of a transfer machine. BACKGROUND

[0002] In the modern coal mining process, a series of key equipment are usually equipped in the coal mining face, including but not limited to a coal winning machine, a face scraper conveyor, hydraulic supports and a crossheading bridge type transfer machine. These devices work together to ensure the effective mining and transportation of coal. Among them, the role of the transfer machine is particularly critical, which is responsible for lifting and transferring the coal transported by the face scraper conveyor to the crossheading belt conveyor for further transportation out of the mine.

[0003] However, in actual operation, since the transfer machine needs to be directly connected with the face conveyor to realize the smooth transfer of coal, no closed cover plate is usually arranged above the tail of the transfer machine and the discharge chute to ensure that the coal can freely fall into the transfer machine. Although this design is beneficial to the rapid loading and unloading of coal, it also brings safety hazards: workers may accidentally slip or fall into the open material inlet of the transfer machine, resulting in serious safety accidents. In addition, traditional safety measures such as simple warning signs or physical isolation methods are difficult to provide sufficient protection, especially in emergency situations, the operation of the transfer machine cannot be stopped quickly, increasing the risk of injury to personnel.

[0004] Therefore, it is particularly important to develop an efficient and easy-to-operate safety device to improve the safety of the material inlet area of the transfer machine, prevent accidental falling of personnel, and immediately trigger an emergency stop mechanism in the event of an accident to minimize harm. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a safety device for the material inlet of a transfer machine, which solves the risk of accidental falling of workers into the material inlet of the transfer machine due to the lack of effective safety protection in the prior art.

[0006] The utility model discloses a technical scheme is realized as follows: A kind of safety guard for the entry of transfer machine, its technical key points are: including the top of several character-shaped support frames of the entry of transfer machine;Symmetrically set up protective switch on the upper portion of several character-shaped support frame, the trigger lever of this protective switch extends horizontally forward;Several character-shaped support frame top is equipped with the through hole for protective switch wiring port to pass through;Lower pull cross bar is arranged between trigger lever, and the lower pull cross bar is connected with trigger lever by connecting assembly;Limiting piece for preventing the left and right displacement of lower pull cross bar is arranged in the left and right ends of lower pull cross bar;The belt strip for hand pulling is vertically arranged in the upper interval of lower pull cross bar, and the belt strip drops in the lower portion of the entry of transfer machine;The connecting assembly includes the U-shaped fixed part that is closely attached to the left and right sides of trigger lever, the fixed plate for fixing U-shaped fixed part and the nut that is screw-connected with the lower portion of U-shaped fixed part;U-shaped fixed part is hung on lower pull cross bar.

[0007] Further, hole piece is arranged at the connecting position of lower pull cross bar and belt strip, and belt strip is screw-connected with hole piece by bolt.

[0008] The utility model discloses the beneficial effect and the characteristics:

[0009] The utility model discloses a kind of innovative safety guard for being set in the entry of transfer machine, when personnel accidentally falls into the entry of transfer machine, can immediately trigger protective switch by pulling belt strip, and further emergency stop the operation of transfer machine.This mechanism greatly reduces the risk of injury, improves the safety of coal mining operation site. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 It is the schematic diagram of the whole structure of the utility model;

[0011] Fig. 2 It is the schematic diagram of part structure of the utility model;

[0012] Fig. 3 It is the schematic diagram of use state of the utility model.

[0013] Main piece serial number explanation in drawing: 1, several character-shaped support frames;101, through hole;2, protective switch;201, trigger lever;3, lower pull cross bar;301, limiting piece;302, hole piece;4, connecting assembly;401, U-shaped fixed part;402, fixed plate;5, belt strip;6, the entry of transfer machine.

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings, and the other drawings obtained are within the protection scope of the present application. DETAILED DESCRIPTION

[0015] The content of the present application will be described in detail below in combination with Figs. 1-3 EMBODIMENT

[0016] A safety protection device for a transfer machine inlet, comprising a few-shaped support frame 1 fixedly arranged at the top of the transfer machine inlet. The design of the few-shaped support frame takes into account the actual working environment and installation requirements of the transfer machine, ensuring that its structure is stable and will not affect the normal operation of the transfer machine.

[0017] Symmetrically arranged on the upper part of the few-shaped support frame 1 are protection switches 2, which are selected from products meeting mine safety standards, have explosion-proof function, and can quickly respond to trigger signals to stop the operation of the transfer machine. The protection switch uses a mine intrinsic safety type deviation sensor of Anhui Hengtai Electrical Technology Co., Ltd., model GEJ20 / 35(A). The trigger lever 201 of the protection switch 2 extends horizontally forward to be effectively connected with the pull-down cross bar 3. The top of the few-shaped support frame 1 is provided with a through opening 101 for the protection switch wiring port to pass through, facilitating electrical connection and maintaining the neatness of the overall structure.

[0018] The pull-down cross bar 3 is connected with the trigger lever 201 through a connecting assembly 4, which comprises U-shaped fixing pieces 401 tightly attached to the left and right sides of the trigger lever, a fixing plate 402 for fixing the U-shaped fixing pieces, and a nut screw-connected with the lower part of the U-shaped fixing pieces. This design not only solves the problem that the protection switch cannot be welded due to explosion-proof requirements, but also facilitates the installation and replacement of the protection switch, and also enhances the stability of the entire device. The U-shaped fixing pieces are hung on the pull-down cross bar 3, ensuring reliable connection between the two.

[0019] In order to prevent the pull-down cross bar 3 from moving left and right during use, limiting pieces 301 are arranged at both ends thereof. The design of the limiting pieces 301 fully considers the convenience and safety of operation, which neither hinders the normal movement of the pull-down cross bar nor effectively limits the transverse movement range thereof.

[0020] ​A plurality of belt strips 5 are vertically arranged above the pull-down cross bar 3, and the belt strips 5 are hung on the lower part of the feeding port 6 of the transfer machine, so as to facilitate the operator to pull the belt strips 5 in emergency. The belt strips 5 are connected with the pull-down cross bar 3 through the hole sheet 302, and the hole sheet is provided with bolt holes. The belt strips are connected with the hole sheet through the bolt, so that the installation process of the belt strips is simplified, and the belt strips can be adjusted or replaced according to the requirement.

[0021] When the operator accidentally falls into the feeding port of the transfer machine, any one of the belt strips 5 can be pulled to drive the pull-down cross bar 3 to move downward, so as to drive the trigger rod 201 to act, and the protection switch 2 starts the emergency stop program to immediately stop the operation of the transfer machine, so that more serious accidents are avoided.

Claims

1. A safety protection device for the feed inlet of a transfer machine, characterized in that: The system includes a U-shaped support frame positioned at the top of the feed inlet of the transfer machine; symmetrically arranged protective switches on the upper part of the U-shaped support frame, with the trigger rods of the protective switches extending horizontally forward; a through-hole for the wiring port of the protective switches to pass through at the top of the U-shaped support frame; a pull-down crossbar between the trigger rods, which is connected to the trigger rods via a connecting assembly; limiting components at both ends of the pull-down crossbar to prevent lateral displacement; and vertically spaced belts for manual pulling on the upper part of the pull-down crossbar, which hang down to the lower part of the feed inlet of the transfer machine. The connecting assembly includes U-shaped fasteners tightly attached to the left and right sides of the trigger rods, a fixing plate for fixing the U-shaped fasteners, and a nut threadedly connected to the lower part of the U-shaped fasteners. The U-shaped fasteners are hooked onto the pull-down crossbar.

2. The safety protection device for the feed inlet of a transfer machine according to claim 1, characterized in that: A perforated plate is provided at the connection position between the pull-down crossbar and the belt strip, and the belt strip is threadedly connected to the perforated plate by bolts.

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