Novel power-off locking protection device for coal mine elevator

Abstract

The utility model provides a novel coal mine elevator power-off locking protection device which comprises two first connecting rods, the two first connecting rods are oppositely arranged, the left ends of the two first connecting rods are connected through a pin shaft, and each first connecting rod is provided with a brake box assembly. A second connecting rod is installed at the right end of each first connecting rod through a pin shaft, a pull rod is installed between the right ends of the two second connecting rods through a pin shaft, and a hydraulic cylinder is arranged on one side of the pull rod in a collinear mode. Due to the arrangement of the box body, the limiting rod, the air cylinder and the brake pad, the abrasion clearance of the brake pad can be compensated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mine hoist technical field especially relates to a new type coal mine hoist power-off lock protection device. BACKGROUND

[0002] The coal mine hoist power-off lock protection device is a device for ensuring that the coal mine hoist can be quickly locked under power failure, preventing accidental start or falling, and ensuring that the hoist can be safely stopped when power failure to avoid equipment damage and personnel casualties.

[0003] The existing coal mine hoist power-off lock protection device comprises a base, a hoist is rotatably installed on the top of the base, a protection device is fixedly installed on the right side of the hoist, the protection device comprises a supporting block, and rotating rods are rotatably installed on the front and back surfaces of the outer surface of the supporting block.

[0004] When the brake pad wears out, there is a gap between the brake pad and the hoist rotating shaft, which can affect the braking effect of the brake pad, and when braking, heat is easily generated between the brake pad and the hoist rotating shaft due to friction, causing the hoist rotating shaft to have a high temperature, and the heat is dissipated into the air, causing heat energy waste. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a new type coal mine hoist power-off lock protection device which can compensate for the wear gap of the brake pad and recycle the heat generated by friction.

[0006] The utility model is realized by the following technical solutions:

[0007] A new type coal mine hoist power-off lock protection device comprises first connecting rods, the first connecting rods are oppositely arranged, the left ends of the first connecting rods are connected by pin shafts, a brake box assembly is installed on each first connecting rod, a second connecting rod is installed on the right end of each first connecting rod by pin shaft, a pull rod is installed between the right ends of the second connecting rods by pin shaft, a hydraulic cylinder is arranged on one side of the pull rod, the output rod of the hydraulic cylinder is fixedly installed on the pull rod, the brake box assembly comprises a box body, limit rods are integrally arranged on the upper left and right sides of the box body, a gas cylinder is arranged on the upper part of the box body, the output rod of the gas cylinder is fixedly installed on the box body, brake pads are detachably installed on the lower part of the box body, an installation groove is formed in the box body, a temperature sensor is fixedly installed in the installation groove, an S-shaped groove is also formed in the box body, a connecting pipe is integrally arranged on the back side of the box body, and the connecting pipe is in communication with the S-shaped groove.

[0008] Preferably, the gas cylinders are fixedly installed on the outer sides of the first connecting rods.

[0009] Preferably, the first connecting rod is internally provided with a through hole matched with the diameter of the limiting rod.

[0010] Preferably, the limiting rod penetrates the through hole of the first connecting rod.

[0011] Preferably, the output rod of the air cylinder penetrates the first connecting rod.

[0012] Preferably, the diameter of the through hole of the first connecting rod for penetrating the output rod of the air cylinder is larger than the diameter of the output rod of the air cylinder.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. In the utility model, the box, the limiting rod, the air cylinder and the brake pad are arranged, which is favorable for compensating the wear gap of the brake pad.

[0015] 2. In the utility model, the installation groove, the temperature sensor, the S-shaped groove and the connecting pipe are arranged, which is favorable for recycling the heat generated by friction. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the structural schematic diagram of the utility model.

[0017] Figure 2 is the structural schematic diagram of the brake box assembly of the utility model.

[0018] Figure 3 is the sectional structural schematic diagram of the box of the utility model.

[0019] IN THE DRAWINGS:

[0020] 1, first connecting rod;2, brake box assembly;3, second connecting rod;4, pull rod;5, hydraulic cylinder;6, hoist rotating shaft;21, box;22, limiting rod;23, air cylinder;24, brake pad;211, installation groove;212, temperature sensor;213, S-shaped groove;214, connecting pipe. DETAILED DESCRIPTION

[0021] The utility model will be specifically described below in combination with the drawings, such as the drawings Figure 1 and the drawings Figure 2As shown, a new coal mine hoist power-off locking protection device, including first connecting rod 1, two first connecting rod 1 is opposite, and two first connecting rod 1 left end pin shaft connection settings, each first connecting rod 1 is installed with brake box assembly 2, each first connecting rod 1 right end pin shaft is installed with second connecting rod 3, two second connecting rod 3 right end between pin shaft is installed with pull rod 4, pull rod 4 side co-linearly provided with hydraulic cylinder 5, hydraulic cylinder 5 output rod and pull rod 4 fixed installation settings, brake box assembly 2 includes box 21, box 21 upper left and right sides integration is provided with limiting rod 22, box 21 upper cooperation is provided with cylinder 23, cylinder 23 output rod and box 21 fixed installation settings, box 21 lower detachable installation has brake pad 24, when the friction gap appears, cylinder 23 drives box 21 and brake pad 24 moves, so that brake pad 24 and hoist shaft 6 contact, compensate the wear clearance of brake pad 24, limiting rod 22 bears the axial reaction force when brake pad 24 and box 21 rotate, reduce the influence of axial reaction force on cylinder 23 output rod, temperature sensor 212 is used for detecting the temperature of box 21, the user circulates the external heat exchange liquid through the connecting pipe 214 and the S type groove 213, which can recycle the heat generated by friction and transmitted to the box 21.

[0022] In the embodiment, in combination with the accompanying drawings Figure 3 As shown, the inside of the box 21 is provided with a mounting groove 211, and the temperature sensor 212 is fixedly installed in the inside of the mounting groove 211. The inside of the box 21 is also provided with an S-shaped groove 213, and the rear side of the box 21 is integrally provided with a connecting pipe 214, which is in communication with the S-shaped groove 213.

[0023] In the embodiment, specifically, two brake pads 24 are provided between the hoist shaft 6.

[0024] In the embodiment, specifically, two cylinders 23 are fixedly installed on the outer sides of the two first connecting rods 1.

[0025] In the embodiment, specifically, the first connecting rod 1 is internally provided with a through hole which is adapted in diameter to the limiting rod 22.

[0026] In the embodiment, specifically, the limiting rod 22 penetrates the through hole of the first connecting rod 1.

[0027] In the embodiment, specifically, the output rod of the cylinder 23 penetrates the first connecting rod 1.

[0028] In the embodiment, specifically, the diameter of the through hole in the first connecting rod 1 for the output rod of the cylinder 23 is greater than the diameter of the output rod of the cylinder 23.

[0029] Working principle

[0030] The utility model discloses a temperature sensor 212, hydraulic cylinder 5 and air cylinder 23 are connected with external control device, when external control device detects that coal mine elevator is powered off, drives the output rod of hydraulic cylinder 5 to withdraw, when the output rod of hydraulic cylinder 5 withdraws, pull rod 4 and second connecting rod 3 drive first connecting rod 1 to make first connecting rod 1 first turn to inboard, so that brake block 24 and elevator shaft 6 are pasted, and through the friction, elevator shaft 6 is braked and locked.

[0031] Utilize the technical scheme of the utility model, or the technical personnel in the utility model technical scheme are inspired, and design similar technical scheme, and reach the above technical effect, and all are the protection scope of the utility model.

Claims

1. A new type of power-off locking protection device for coal mine hoist, characterized in that, The novel coal mine hoist power-off locking protection device comprises first connecting rods (1), two first connecting rods (1) are oppositely arranged, and the left ends of the two first connecting rods (1) are connected by pin shafts, a brake box assembly (2) is installed on each first connecting rod (1), a second connecting rod (3) is pin shaft installed on the right end of each first connecting rod (1), a pull rod (4) is pin shaft installed between the right ends of the two second connecting rods (3), a hydraulic cylinder (5) is arranged on one side of the pull rod (4) in a line, the output rod of the hydraulic cylinder (5) is fixedly installed on the pull rod (4), the brake box assembly (2) comprises a box body (21), a limiting rod (22) is integrally arranged on the upper left and right sides of the box body (21), a gas cylinder (23) is cooperatively arranged on the upper part of the box body (21), the output rod of the gas cylinder (23) is fixedly installed on the box body (21), a brake pad (24) is detachably installed on the lower part of the box body (21), an installation groove (211) is formed in the box body (21), a temperature sensor (212) is fixedly installed in the installation groove (211), an S-shaped groove (213) is further formed in the box body (21), a connecting pipe (214) is integrally arranged on the rear side of the box body (21), and the connecting pipe (214) is in communication with the S-shaped groove (213).

2. The new type of power-off locking protection device for coal mine hoist according to claim 1, characterized in that, Two gas cylinders (23) are fixedly installed on the outer sides of the two first connecting rods (1).

3. The new type of power-off locking protection device for coal mine hoist according to claim 1, characterized in that, The first connecting rod (1) is internally provided with a through hole which is adapted in diameter to the limiting rod (22).

4. The new type of power-off locking protection device for coal mine hoist according to claim 1, characterized in that, The limiting rod (22) penetrates the through hole of the first connecting rod (1).

5. The new type of power-off locking protection device for coal mine hoist according to claim 1, characterized in that, The output rod of the gas cylinder (23) penetrates the first connecting rod (1).

6. The new type of power-off locking protection device for coal mine hoist according to claim 1, characterized in that, The diameter of the through hole of the first connecting rod (1) for the output rod of the gas cylinder (23) is greater than the diameter of the output rod of the gas cylinder (23).

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