Mechanical braking device for driving wheel of coal mine overhead man-riding device

Abstract

The utility model relates to the technical field of coal mine equipment, in particular to a mechanical braking device for a driving wheel of a coal mine overhead man-riding device. Comprising a driving wheel set, a cross-shaped square tube, a steel wire rope, a brake assembly and an I-shaped steel support, the I-shaped steel support is fixedly arranged on a monkey vehicle travel frame, the cross-shaped square tube is fixedly arranged at the bottom of the I-shaped steel support, the driving wheel set is rotationally arranged at the bottom of the cross-shaped square tube, and the circle center of the driving wheel set coincides with the center of the cross-shaped square tube; the steel wire rope is arranged on the driving wheel set in a sleeving mode, and the braking assembly is arranged at the bottom of the cross-shaped square pipe and used for controlling braking of the driving wheel set. The device is mechanically braked, so that braking is not affected even if power is cut off. The overhead man-riding device can prevent the overhead man-riding device steel wire rope from reversing and hurting people, is high in sensitivity and ensures safety of people riding the overhead man-riding device. The device is mainly applied to mechanical braking of the driving wheel of the coal mine overhead man-riding device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine equipment, more specifically, relate to a kind of coal mine monkey car drive wheel mechanical brake device. BACKGROUND

[0002] Mine overhead passenger device, commonly known as "monkey car", as an important part of mine transport system, its operation efficiency is directly related to mine production efficiency and personnel safety.In the actual production process of coal mine, monkey car system generally has the technical features of efficient transportation, low energy consumption operation and compact space layout, but there are still safety hazards and system defects to be solved.

[0003] There are two methods to realize monkey car braking in the prior art, one is to monitor the speed of steel wire rope by radar, and to realize braking by hydraulic braking steel wire rope when the speed exceeds the running speed.The other is manual braking, when the speed exceeds the running speed, manual braking operation is taken, and the above two braking methods are operated through circuit.If the system fails, or suddenly loses power, or the nylon column pin of the coupling breaks during operation, it will cause reverse injury.

[0004] The technical bottleneck of current monkey car system mainly reflects in the following aspects: first, the power transmission system has insufficient reliability, when encountering sudden power failure, the nylon column pin of the coupling at the output end of the drive part reducer is prone to brittle fracture, resulting in instantaneous loss of power of the drive wheel.At this time, under the action of unilateral load, the uplink side passenger device will produce reverse slip movement, and the existing braking system fails to establish an effective reverse braking mechanism.Secondly, the speed monitoring protection system has design defects, which are manifested in weak anti-interference ability of speed sensor, lack of anti-misoperation design of reference speed parameter setting, and the possibility of illegal operation of human speed protection, resulting in failure of overspeed protection mechanism. UTILITY MODEL CONTENTS

[0005] To overcome the above-mentioned deficiencies in the prior art, the utility model provides a kind of coal mine monkey car drive wheel mechanical brake device.The device is mechanically braked, so power failure will not affect braking.It can prevent monkey car steel wire rope from reversing and injuring people, has high sensitivity, and ensures the safety of personnel riding monkey car.

[0006] To solve the above technical problems, the utility model adopts the technical scheme:

[0007] The utility model provides a coal mine monkey car drive wheel mechanical brake device, including drive wheel group, cross square tube, steel wire rope, brake assembly and I -beam support, the I -beam support is fixedly arranged on monkey car travel frame, cross square tube is fixedly arranged at the bottom of I -beam support, drive wheel group rotation is arranged at the bottom of cross square tube, the center of drive wheel group coincides with the center of cross square tube and is arranged, the steel wire rope is set on drive wheel group, brake assembly is arranged at the bottom of cross square tube, and brake assembly is used for brake control to drive wheel group.

[0008] Brake assembly is arranged at the bottom of the four outer ends of the cross square tube.

[0009] The brake assembly includes a fixed clamp, a brake control spring, and a movable inclined iron pin. The cross square tube has a bottom-opened placement groove on its outer end. The fixed clamp is arranged in the placement groove. The movable inclined iron pin is slidingly arranged in the fixed clamp. One end of the brake control spring is fixedly connected to the inner top of the fixed clamp, and the other end is fixedly connected to the movable inclined iron pin.

[0010] A brake clamping groove corresponding to the position of the movable inclined iron pin is formed on the upper surface of the drive wheel group, and the brake clamping groove is circularly arranged along the center of the drive wheel group.

[0011] A wheel liner is sleeved on the drive wheel group, and the wheel liner is provided with a groove.

[0012] The wheel liner is made of polyurethane material.

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

[0014] The four brake assemblies symmetrically distributed at the four ends of the cross square tube form a multi-point synchronous braking structure, which cooperates with the brake clamping grooves uniformly distributed on the circumference of the drive wheel group to significantly improve the uniformity and reliability of braking. When counterclockwise reverse rotation occurs, multiple movable inclined iron pins can be simultaneously embedded in the clamping grooves to form a distributed locking effect. Based on the cooperation between the inclined surface of the movable inclined iron pin and the brake control spring, intelligent one-way braking is achieved: the drive wheel is allowed to rotate freely clockwise, and the inclined iron pin is automatically embedded in the clamping groove to form mechanical locking when rotating counterclockwise. This design does not require external energy source to drive, realizes pure mechanical autonomous response, and completely eliminates the dependence on the power system. Even in the event of sudden power failure or hydraulic / pneumatic system failure, immediate braking can still be achieved through the rigid engagement of the inclined iron pin and the brake clamping groove, effectively avoiding falling accidents caused by steel wire rope reverse sliding. The combined structure of the I-beam support and the cross square tube supports rapid installation and modification without changing the existing monkey car main frame. This device can be adapted to the drive wheel group and compatible with the tail wheel system. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 This is a front view of the present utility model;

[0018] Figure 4 This is a schematic diagram of the drive wheel assembly in this utility model;

[0019] Figure 5 This is a schematic diagram of the braking component in this utility model;

[0020] In the diagram: 1 is the drive wheel assembly, 2 is the brake slot, 3 is the cross-shaped square tube, 4 is the wire rope, 5 is the brake assembly, 51 is the fixed bracket, 52 is the brake control spring, 53 is the movable wedge pin, 6 is the I-beam bracket, and 7 is the wheel bushing. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] like Figures 1 to 5 As shown, a mechanical braking device for the drive wheels of a coal mine gantry crane includes a drive wheel assembly 1, a cross-shaped square tube 3, a steel wire rope 4, a braking assembly 5, and an I-beam support 6. The I-beam support 6 is fixedly mounted on the gantry crane's travel frame. The cross-shaped square tube 3 is fixedly mounted at the bottom of the I-beam support 6. The drive wheel assembly 1 is rotatably mounted at the bottom of the cross-shaped square tube 3, with the center of the drive wheel assembly 1 coinciding with the center of the cross-shaped square tube 3. The steel wire rope 4 is sleeved on the drive wheel assembly 1. The braking assembly 5 is located at the bottom of the cross-shaped square tube 3 and is used for braking control of the drive wheel assembly. The device can also be installed at the tail wheel of the gantry crane, achieving mechanical braking in the same way.

[0024] Preferably, a braking assembly 5 is provided at the bottom of each of the four outer ends of the cross-shaped square tube 3.

[0025] Preferably, the brake assembly 5 comprises a fixed clamping seat 51, a brake control spring 52 and a movable inclined pin 53, a bottom-opened placing groove is formed on the outer end of the cross square tube 3, the fixed clamping seat 51 is arranged in the placing groove, the movable inclined pin 53 is slidingly arranged in the fixed clamping seat 51, one end of the brake control spring 52 is fixedly connected to the inner top of the fixed clamping seat 51, and the other end is fixedly connected with the movable inclined pin 53.

[0026] The bottom of the movable inclined pin 53 is arranged in an inclined manner, when the driving wheel set 1 or the tail wheel rotates clockwise, the movable inclined pin 53 is extruded and lifted, and the brake control spring 52 is compressed, when the driving wheel set 1 or the tail wheel rotates counterclockwise, the movable inclined pin 53 is clamped in the brake clamping groove 2, and the rotation of the driving wheel set 1 or the tail wheel is limited.

[0027] Preferably, a brake clamping groove 2 corresponding to the position of the movable inclined pin 53 is formed on the upper surface of the driving wheel set 1, and the brake clamping groove 2 is arranged in a circular manner along the center of the driving wheel set 1.

[0028] Preferably, a wheel lining 7 is sleeved on the driving wheel set 1, and the wheel lining 7 is provided with a groove.

[0029] Preferably, the wheel lining 7 is made of polyurethane material. The polyurethane wheel lining 7 improves the friction between the driving wheel set 1 and the steel wire rope 4.

[0030] During the operation of the monkey car, if the steel wire rope 4 reversely slides downward, the brake clamping groove 2 is arranged on the driving wheel set 1 or the tail wheel, and four movable inclined pins 53 are arranged below the four end portions of the cross square tube 3. Through the friction between the steel wire rope 4 and the polyurethane wheel lining 7 on the wheel lining of the driving wheel set 1 or the tail wheel, the control that the steel wire rope 4 can only rotate clockwise and cannot rotate counterclockwise is realized. The brake is realized through a mechanical mode, and the brake of the monkey car will not be affected by power failure, so that the injury caused by the reverse rotation of the steel wire rope of the monkey car is avoided. The device has high sensitivity and strong reliability, and can be directly arranged on the existing monkey car equipment for use. The safety of personnel riding the monkey car is ensured.

[0031] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model, and various changes should be included in the protection range of the utility model.

Claims

1. A mechanical braking device for a drive wheel of a coal mine monkey car, characterised in that: Including drive wheel group (1), cross square tube (3), steel wire rope (4), brake assembly (5) and I-beam support (6), the I-beam support (6) is fixedly arranged on the monkey car travel frame, the cross square tube (3) is fixedly arranged at the bottom of the I-beam support (6), the drive wheel group (1) is rotationally arranged at the bottom of the cross square tube (3), the center of the drive wheel group (1) is coincidently arranged with the center of the cross square tube (3), the steel wire rope (4) is sleeved on the drive wheel group (1), the brake assembly (5) is arranged at the bottom of the cross square tube (3), and the brake assembly (5) is used for brake control of the drive wheel group.

2. The mechanical braking device for driving wheels of a coal mine monkey car according to claim 1, characterized in that: Brake assembly (5) is arranged at the bottom of the four outer ends of the cross square tube (3).

3. The mechanical braking device for driving wheels of a coal mine monkey car according to claim 2, characterized in that: The brake assembly (5) includes a fixed clamping seat (51), a brake control spring (52) and a movable inclined iron pin (53), the cross square tube (3) is provided with a bottom opening placing groove on the outer end, the fixed clamping seat (51) is arranged in the placing groove, the movable inclined iron pin (53) is slidably arranged in the fixed clamping seat (51), one end of the brake control spring (52) is fixedly connected to the inner top of the fixed clamping seat (51), and the other end is fixedly connected with the movable inclined iron pin (53).

4. The mechanical braking device for driving wheels of a coal mine monkey car according to claim 3, characterized in that: The upper surface of the drive wheel group (1) is provided with a brake clamping groove (2) corresponding to the position of the movable inclined iron pin (53), and the brake clamping groove (2) is circularly arranged along the center of the drive wheel group (1).

5. The mechanical braking device for driving wheels of a coal mine monkey car according to claim 1, characterized in that: The drive wheel group (1) is sleeved with a wheel lining (7), and the wheel lining (7) is provided with a groove.

6. The mechanical braking device for driving wheels of a coal mine monkey car according to claim 5, characterized in that: The wheel lining (7) is made of polyurethane material.

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