Mining elevator braking force testing device

Abstract

The utility model provides a mining elevator braking force testing device, which comprises a force arm, a hanging ring, a pressure sensor and a jack, a front pin hole is arranged on the lower side of the front end of the force arm, the front pin hole is aligned with a car fixing hole on the edge of an elevator roller and connected with the car fixing hole through a front connecting pin, the rear end of the force arm is connected with the hanging ring through a rear connecting pin, and the force arm is in a horizontal state. The lower end of the lifting ring is fixedly connected with the pressure sensor, the upper end of the jack is connected to the lower end of the pressure sensor, and the sensor is detachably connected with the jack and the lifting ring. The device is simple and compact in structure and easy to install and operate, and the preparation time and labor cost of testing are reduced; the connection part of the pressure sensor and the jack and the connection part of the pressure sensor and the force arm are not inclined due to stress, so that the pressure sensor is prevented from sliding off, and personnel and equipment are prevented from being damaged, and the personnel and the equipment can be better protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake force testing equipment technical field, specifically, relates to a mine hoist brake force testing device. BACKGROUND

[0002] The mine hoist brake force testing device is a device for testing the brake force of a mine hoist. The device can prevent the device itself from being continuously held by external force during the test process and avoid the occurrence of unsafe conditions such as sliding, tilting, and popping out of the device, thereby protecting the safety of personnel and equipment.

[0003] With the wide application of mine hoists in mining operations, the mine hoist has become a critical device for mine production. The mine hoist is a complex and large mechanical-electrical unit in the mine, which plays an important role in the safe operation of the mine. Once a fault occurs in production, it will seriously affect the normal production of the mine, and even cause personal accidents. The brake system of the hoisting equipment is an important means for deceleration and safe parking of the hoisting system, and is the basis for the action of all protection devices of the hoisting equipment, directly affecting the personal safety and equipment safety of the workers. Therefore, during the brake force test of the hoist, a device with high safety coefficient and convenient to carry for the test personnel is needed to ensure the safe and efficient performance of the test work. The present patent aims to meet this demand by designing and manufacturing a new type of mine hoist brake force testing device. SUMMARY

[0004] The utility model just is based on above technical problem, proposes a kind of mine hoist brake force testing device.

[0005] A mine hoist brake force testing device includes: a force arm, a lifting ring, a pressure sensor, and a jack. The front end of the force arm is provided with a front pin hole. The front pin hole is aligned with the fixed car hole of the edge of the hoist drum and connected by a front connecting pin. The rear end of the force arm is connected and fixed with the lifting ring by a rear connecting pin. The force arm is in a horizontal state. The lower end of the lifting ring is connected with the pressure sensor. The upper end of the jack is connected to the lower end of the pressure sensor.

[0006] Preferably, a limit stop is provided on the upper part of the front end of the force arm. The limit stop limits the upward rotation of the force arm around the front connecting pin as the rotation axis.

[0007] Preferably, the limit stop is a hexagonal long bolt. A threaded sleeve is provided on the upper part of the front end of the force arm. A horizontal screw hole is provided in the threaded sleeve. The hexagonal long bolt is threadedly fitted in the threaded sleeve. The nut at the front end of the hexagonal long bolt is in contact with the side edge of the hoist drum.

[0008] Preferably, the force arm is composed of two clamping arms, the two clamping arms are fixedly connected through a plurality of connecting plates, the fixing hole and the lifting ring are located between the two clamping arms, and the rear connecting pin passes through the lifting ring.

[0009] Preferably, a threaded fixing pin is arranged on the lifting ring, the lower end of the fixing pin is tightly pressed on the rear connecting pin, and the lifting ring and the rear connecting pin are fixedly connected.

[0010] Preferably, the rear end of the force arm is further provided with a protective cover, and the protective cover is wrapped outside the pressure sensor.

[0011] Preferably, the protective cover is composed of a semicircular rear cover and a semicircular front cover, the rear cover is fixed at the rear end of the force arm, the rear cover is located at the rear side of the pressure sensor, the front cover is located at the front side of the pressure sensor, one end of the front cover is hingedly connected with the lower end of the rear cover, the other end of the front cover is provided with clamping pins on both sides, both sides of the rear cover are provided with buckles which are rotatably installed, the front end of the buckle is provided with a clamping opening, and the clamping opening is clamped on the clamping pins to connect the front cover and the rear cover.

[0012] Preferably, a screw rod is arranged on the lower side of the lifting ring, the upper end of the jack rod is provided with a thread, the upper end of the pressure sensor is provided with a threaded groove, the lower end of the pressure sensor is provided with a nut, and the screw rod and the jack rod are both installed in cooperation with the pressure sensor in a threaded connection mode.

[0013] Beneficial effects: first, the device has simple and compact structure, is easy to install and operate, and reduces the preparation time and labor cost of testing;

[0014] Secondly, the connecting parts of the pressure sensor, the jack and the force arm will not tilt due to stress, so as to cause the pressure sensor to slide off and cause damage to personnel and equipment, and the protection of personnel and equipment can be better completed.

[0015] Thirdly, the device adopts modular design and can be flexibly combined according to the site conditions in actual application, so as to meet more use scenes.

[0016] Finally, the movable connection is adopted between the modules, which is beneficial to the maintenance and repair of the equipment, and the equipment can be carried in the harsh environment of the mine, and the safety performance of the protection device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 The structure schematic view of the device is shown;

[0018] Fig. 2 The connection structure diagram of the pressure sensor is shown;

[0019] Fig. 3A structure connected with the hoist drum is shown.

[0020] Fig. 4 An application example of the utility model is shown. DETAILED DESCRIPTION

[0021] In order to make the above objects, features and advantages of the utility model more clearly understood, the utility model will be further described in detail below with reference to the drawings and specific embodiments.It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] As Figs. 1-4 shown in a kind of brake force testing device of mine hoist, the device includes force arm 1, lifting ring 4, pressure sensor 5, jack 6, the lower side of the front end of force arm 1 is equipped with front pin hole, front pin hole is aligned with the fixed car hole 16 of the edge of hoist drum 15 and is connected by front connecting pin 2, so that force arm 1 can be stably connected with hoist drum 15;Force arm 1 rear end is connected and fixed with lifting ring 4 by rear connecting pin 3, force arm 1 is horizontal state, guarantee the accuracy of test;Lifting ring 4 lower end is connected with pressure sensor 5, the upper end of jack 6 is connected to the lower end of pressure sensor 5, the size of force is measured by the jacking action of jack 6, through pressure sensor 5, to realize the test to brake force.

[0023] Lifting ring 4 lower side is equipped with screw rod 17, the upper end of the top rod 18 of jack 6 is equipped with screw thread, the upper end of pressure sensor 5 is equipped with screw groove, the lower end of pressure sensor 5 can be provided with nut, screw rod 17 is screwed into screw groove and top rod is screwed into nut to realize the detachable connection of lifting ring 4, jack 6 and pressure sensor 5.

[0024] As further improvement, the upper portion of the front end of force arm 1 is equipped with a limit stop, which limits the upward rotation of force arm 1 about the front connecting pin 2 as the rotation axis, ensuring that force arm 1 is rotated to at most the horizontal state during the test process.

[0025] The limit stop can be a hexagonal long bolt 8, and the upper portion of the front end of force arm 1 is equipped with a screw sleeve 7, which has a horizontal screw hole inside. The hexagonal long bolt 8 is threadedly fitted inside the screw sleeve 7. By rotating the hexagonal long bolt 8, the nut 9 at the front end of the hexagonal long bolt 8 can be brought into contact with the side edge of the hoist drum 15, thereby ensuring the limiting effect on force arm 1.

[0026] Force arm 1 is composed of two clamping arms 101, which are fixedly connected by a plurality of connecting plates. The fixed car hole 16 and the lifting ring 4 are both located between the two clamping arms 101, and the rear connecting pin 3 passes through the lifting ring 4, thereby improving the stability and reliability of the structure.

[0027] The fixing pin 14 is in threaded cooperation with the lifting ring 4, and the lower end of the fixing pin 14 is tightly pressed against the rear connecting pin 3 to connect and fix the lifting ring 4 with the rear connecting pin 3, so as to ensure the firmness of the connection.

[0028] The force arm 1 is further provided with a protective cover at the rear end, which is wrapped outside the pressure sensor 5 to protect the pressure sensor 5.

[0029] The protective cover is composed of a semicircular rear cover 10 and a semicircular front cover 11, the rear cover 10 is fixed at the rear end of the force arm 1, the rear cover 10 is located at the rear side of the pressure sensor 5, the front cover 11 is located at the front side of the pressure sensor 5, one end of the front cover 11 is hinged with the lower end of the rear cover 10, the other end of the front cover 11 is provided with a clamping pin 13 at both sides, the rear cover 10 is provided with a clamping buckle 12 rotatably installed at both sides, the clamping buckle 12 is provided with a clamping hole at the front end, the clamping hole clamps the clamping pin 13 to connect the front cover 11 with the rear cover 10, so as to facilitate the opening and closing and maintenance of the protective cover.

[0030] The use process of the device is as follows:

[0031] During the test, the lifting ring 4 and the pressure sensor 5 are first taken out, the connection between the lower part of the lifting ring 4 and the upper part of the pressure sensor 5 is completed, the force arm 1 is connected with the fixed hole 16 on the drum 15 of the hoist through the front connecting pin 2, the lifting ring 4 is placed between the two clamping arms 101, the hole in the middle of the lifting ring 4 is aligned with the pin hole at the rear end of the clamping arm 101, and the connection is completed by using the rear connecting pin 3, according to the positions of the force arm 1 and the pressure sensor 5, the hydraulic jack 6 is placed to be connected with the pressure sensor 5, after the connection is completed, the fixing pin 14 is installed on the rear connecting pin 3 of the lifting ring 4, after the device is fixed, the jack 6 is started to adjust the force arm 1 to be horizontal, then the driver room of the hoist is informed to start the braking force test.

[0032] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mine hoist brake force testing device, characterized in that, The force arm, the lifting ring, the pressure sensor, the jack, the front end of the force arm is provided with a front pin hole, the front pin hole is aligned with the fixed hole of the edge of the drum of the lifting machine and connected through the front connecting pin, the rear end of the force arm is connected and fixed with the lifting ring through the rear connecting pin, the force arm is in a horizontal state, the lower end of the lifting ring is connected with the pressure sensor, the upper end of the jack is connected to the lower end of the pressure sensor, the sensor is connected with the jack and the lifting ring in a detachable manner. The upper part of the front end of the force arm is provided with a stopper, which limits the upward rotation of the force arm around the front connecting pin as the rotation axis.

2. The mine hoist brake force testing device of claim 1, wherein, The stopper is a hexagonal long bolt, the upper part of the front end of the force arm is provided with a screw sleeve, the screw sleeve is provided with a horizontal screw hole, the hexagonal long bolt is threadedly fitted in the screw sleeve, and the nut at the front end of the hexagonal long bolt is in contact with the side edge of the drum of the lifting machine.

3. The mine hoist brake force testing device of claim 2, wherein, The force arm is composed of two clamping arms, the two clamping arms are connected and fixed through a plurality of connecting plates, the fixed hole and the lifting ring are located between the two clamping arms, and the rear connecting pin passes through the lifting ring.

4. The mine hoist brake force testing device of claim 1, wherein, The lifting ring is provided with a threaded fixing pin, the lower end of the fixing pin is tightly pressed on the rear connecting pin to connect and fix the lifting ring and the rear connecting pin.

5. The mine hoist brake force testing device of claim 4, wherein, The rear end of the force arm is also provided with a protective cover, which wraps the outside of the pressure sensor.

6. The mine hoist brake force testing device of claim 1, wherein, The protective cover is composed of a semicircular rear cover and a semicircular front cover, the rear cover is fixed at the rear end of the force arm, the rear cover is located at the rear side of the pressure sensor, the front cover is located at the front side of the pressure sensor, one end of the front cover is hinged with the lower end of the rear cover, the other end of the front cover is provided with a catch pin on both sides, the rear cover is provided with a buckle rotatingly installed on both sides, the buckle is provided with a bayonet at the front end, the bayonet is clamped on the catch pin to connect the front cover and the rear cover.

7. The mine hoist brake force testing device of claim 6, wherein, The lower side of the lifting ring is provided with a screw rod, the upper end of the jack rod is provided with a thread, the upper end of the pressure sensor is provided with a threaded groove, and the lower end of the pressure sensor is provided with a nut, the screw rod and the jack rod are connected with the pressure sensor in a threaded connection manner.

8. The mine hoist brake force testing device of claim 1, wherein, ​

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