WO2020119198A1

WO2020119198A1 - Apparatus for jointly opening large-tonnage skip gates and diversion cover

Info

Publication number: WO2020119198A1
Application number: PCT/CN2019/105546
Authority: WO
Inventors: 曹国华; 朱真才; 周公博; 沈刚; 彭玉兴
Original assignee: 中国矿业大学
Priority date: 2018-12-14
Filing date: 2019-09-12
Publication date: 2020-06-18
Also published as: CN109649885B; CN109649885A

Abstract

An apparatus for jointly opening large-tonnage skip gates (11) and a diversion cover, comprising a skip, the skip gates (11) mounted at the front and rear sides of the skip, and a diversion cover gate (9) mounted at the left-side lower end of the skip. The skip gates (11) are pivotally connected at the upper end to the upper end of an opening of the skip and are driven by the opening apparatus to be opened or closed. The opening apparatus comprises hydraulic cylinder actuating apparatus (12) symmetrically arranged on both the front and rear sides of the skip and a multiple connecting rod mechanism. The hydraulic cylinder actuating apparatus (12) are connected to the skip gates (11) to drive the opening and closing thereof. The multiple connecting rod mechanism comprises connecting rod one (1), connecting rod two (4), connecting rod three (6), connecting rod four (7), connecting rod five (8), and a sliding groove fixing plate (13) for mounting the connecting rods. The apparatus implements simultaneous and joint opening and closing of the diversion cover gate and the skip gates via the multiple connecting rod mechanism and prevents the phenomenon of unsmooth coal slipping and coal retention caused by the diversion cover door not opening in time. The hydraulic cylinder actuating apparatus are used in tandem with the multiple connecting rod mechanism, thus allowing the process of opening the gates of the large-tonnage skip to be smooth, and greatly reducing the force of impact in a reset process.

Description

Large-tonnage skip gate and diversion cover combined opening device

Technical field

The invention relates to a mining skip, in particular to a large-tonnage skip gate and diversion cover joint opening device, which belongs to the technical field of mine lifting.

Background technique

In many links of coal mine production, the safe and reliable operation of the mine hoisting and loading system is very important for the safe and efficient production of the mine, and the mine bucket is the main equipment for the mine hoisting and installation in the system, and the coal is loaded underground through the loading equipment After the bucket is lifted to the unloading position in the shaft, the bucket gate is opened by the gate opening and closing device, and the coal is discharged into the coal bunker. After the dump is closed, the bucket gate is closed and left the unloading position, and it is lowered to the bottom of the well before loading coal.

With the development of coal mine production in the direction of large-scale, high-yield and high-efficiency, large-tonnage skips are more and more widely used in mine lifting systems, and more and more problems occur during the opening of gates. At present, the opening method of the single rope skip gate mainly adopts the structure of opening the gate under the curved track connecting rod. When the gate under the connecting rod of the curved track is normally closed, the centerline of the connecting rod forms an angle with the vertical position to form a self-locking; when the skip is lifted close to the unloading position, the unloading roller on the gate enters the unloading curved track. The gate is opened under the action; after the coal unloading is completed, the skip is lowered and the unloading roller exits along the unloading curved track, closing the gate and reaching the locked position. This type of gate mechanism is simple, saves effort to open the gate, has little force on the derrick, and has a short unloading curve. However, for large-tonnage skips, the gate under the connecting rod of the track rail is likely to collide with the skip during the loading and reset process. The huge impact force during the collision will cause the deformation of the skip to increase, resulting in a large amount of gate maintenance work; And the opening of the diversion sluice gate and the skip gate of this structure is not synchronized, and the diversion sluice gate is not opened in time, which is prone to poor coal slippage and coal stagnation; the mechanical limit of the gate is inaccurate, and it is easy to appear that it cannot be reset after opening This phenomenon will not only seriously affect the improvement of efficiency, but may also cause safety accidents.

Summary of the invention

In order to overcome various deficiencies in the prior art, the present invention provides a large-tonnage skip gate and diversion cover joint opening device, the gate opening method is safe and reliable, the opening and closing actions are stable and accurate, and the skip gate and diversion can be realized The combined opening and closing of the hood improves the safety and working efficiency of the mining lifting system.

In order to achieve the above object of the invention, a large-tonnage skip gate and diversion cover joint opening device of the present invention includes a skip, skip gates installed on the front and rear sides of the skip, and a diversion cover installed on the lower left end of the skip Gate, the skip gate is a fan gate, the upper end of the skip gate is hinged to the upper end of the opening of the skip, and it is opened and closed by an opening device; the opening device includes hydraulic cylinder driving devices symmetrically provided on both sides of the front and back of the skip And multi-link mechanism, hydraulic drive device connected to skip gate to drive the gate to open and close; multi-link mechanism includes link one, link two, link three, link four, link five and the installation of each link The chute fixing plate is fixed on the front and back sides of the skip, the two ends of the connecting rod are hinged with the skip gate, the other end and the one end of the connecting rod are hinged together on the slider 1, and the slider 1 is limited to The chute fixing plate slides up and down in the slot, the other end of the connecting rod one and the one end of the connecting rod four are hinged at the two ends of the connecting rod frame one respectively, the middle of the connecting rod frame one is hinged at the lower end of the chute fixing plate, the connecting rod four The other end and the one end of the connecting rod 3 are hinged together on the slider 2, the slider 2 is limited to slide up and down in the groove of the slide fixing plate, the limit groove of the slider 1 and the limit groove of the slider 2 are arranged in parallel , The other end of link three and one end of link five are hinged together at one end of link frame 2, the other end of link frame 2 is hinged at the top of the chute fixing plate, and the other end of link five is hinged at the diversion gate Inside.

The hydraulic cylinder drive device includes a left drive cylinder, a left swing arm, a right drive cylinder, and a right swing arm. The hydraulic cylinder drive devices are used in pairs and are installed symmetrically on the front and back sides of the skip; when unloading coal, the right end of the left swing arm pushes The roller of the fan-shaped skip gate swings to the upper right to open the skip gate; when the coal is unloaded, the left end of the right swing arm pushes the roller of the fan-shaped skip gate to swing down to the left to close the skip gate.

When the hydraulic cylinder drive device at the left end pushes the skip gate to the right, the skip gate opens to the upper right, and at the same time drives the connecting rod to move upwards, and the slider 1 slides up along the limit groove. As soon as the rod moves upwards, the connecting rod rotates counterclockwise around the hinge fixed on the skip, so that the connecting rod 4 moves downwards, and the slider 2 slides down. The rod three moves downward, and the rod three drives the link rod two to rotate counterclockwise, so that the position of the compound hinge point of the link three and the link five is lowered, and the end of the link five and the diversion gate is moved upward. Push the diversion sluice gate open to realize the joint opening of the skip gate and the diversion sluice gate; when the hydraulic cylinder drive device at the right end pushes the skip gate to the left, the skip gate closes to the left and simultaneously drives the connecting rod to move downward 1. The slider slides down the limit groove. Under the driving of the slider, the connecting rod moves downward. The connecting rod rotates clockwise around the hinge fixed on the skip, so that the connecting rod four Moving upwards, the slider 2 slides down, and under the driving of the slider 2, the connecting rod three moves upward, and the connecting rod three drives the connecting rod two to rotate clockwise, so that the connecting rod three and the connecting rod five are hinged together The position of the point rises, so that the end of the connecting rod 5 connected to the shroud gate moves upwards and then pulls the shroud gate to close, thereby achieving the joint closure of the skip gate and the shroud.

Further, one side of the link frame one connected to the link one is the right link frame, and the side connected to the link four is the left link frame, when the angle between the right link frame and the link is When it is 180°, the skip gate and diversion gate reach the opening and locking position. When the angle between the right link frame and the connecting rod is 0°, the skip gate and diversion gate reach the closing and locking position.

When the skip gate and diversion gate reach the open lock position, the slider stops sliding upwards, the hydraulic cylinder drive device at the left end stops pushing the skip gate upward, the skip gate opens to the maximum position, and the connecting rod is locked. At the same time, the connecting rod mechanisms on the left also stop moving, and the diversion gates stop opening to the upper left; when the skip gate and diversion gate reach the closed locking position, the slider stops sliding downwards, and the hydraulic cylinder drive device on the right end Stop pushing the skip gate down to close, the skip gate is completely closed, and at the same time as the connecting rod is locked, the connecting rod mechanisms on the left side also stop moving, and the diversion gate gate is completely closed. Through the two dead points of the mid-level six-bar mechanism in the process of sliding up and down of the slider in the joint opening device of the skip gate and the diversion cover, the positions of the skip gate and the diversion cover gate can be accurately controlled to avoid the limit position The inaccurate shut-off caused by inaccuracy or failure to reset occurs.

The invention realizes the synchronous joint opening and closing of the diversion sluice gate and the skip gate through the multi-linkage mechanism to avoid the phenomenon that the diversion sluice gate does not open and causes coal slippage and coal stagnation; the hydraulic cylinder drive device and the multi-linkage mechanism With the use of, the opening process of the gate of the large tonnage skip is more stable, the impact force between the skip and the gate of the reset process is greatly reduced, and the service life and safety performance of the skip are improved; the joint closing process of the skip gate and the shroud gate In the middle, the gravity action of the slider drives the reset action of each connecting rod more quickly and sensitively; by changing the rod length ratio and phase angle of each member, the follower can obtain a variety of movement trajectories to meet the needs of other similar working conditions. The scope is wider; through the two dead points of the mid-level six-bar mechanism in the process of sliding up and down of the slider in the joint opening device of the skip gate and the diversion cover, the position of the skip gate and the diversion cover gate can be accurately controlled , To avoid the phenomenon of inadequate closing or unresetability caused by inaccurate limit; the overall structure is compact, safe and reliable, easy to operate, suitable for a variety of tonnages, and can adapt to the large-scale development of coal mines, high production and high efficiency The opening of the tonnage skip gate; and the mechanism is convenient for processing, installation and use, which can effectively save the installation and commissioning time and improve the use efficiency.

BRIEF DESCRIPTION

1 is a schematic structural view of a large-tonnage skip and a combined opening device of a skip gate and a shroud of the present invention;

2 is a schematic structural view of a joint opening device of a skip gate and a diversion cover in the present invention;

3 is a schematic diagram of the principle of the hydraulic cylinder drive device in the present invention;

4 is a schematic diagram of the mechanism of the joint opening device of the skip gate and the deflector when the present invention is in any position;

5 is a schematic diagram of the mechanism of the joint opening device of the skip gate and the shroud when the present invention is in the fully open position;

6 is a schematic diagram of the mechanism of the joint opening device of the skip gate and the deflector in the fully closed position of the present invention;

7 is a schematic view of the principle of the eight-bar mechanism on the left side of the skip-gate and diversion cover joint opening device in any position of the present invention;

8 is a schematic diagram of the principle of the six-bar mechanism on the right side of the joint opening device of the skip gate and the shroud in any position of the present invention;

9 is a schematic front view of the connecting rod slider mechanism of the present invention;

10 is a plan view of the slide groove fixing plate of the present invention;

In the picture: 1, connecting rod one; 2, slider one; 3. slider two; 4, connecting rod two; 5, connecting rod two; 6, connecting rod three; 7, connecting rod four; 8, Five connecting rods; 9. Shroud gate; 10, connecting rod frame one; 10-1, right connecting rod frame; 10-2, left connecting rod frame; 11, skip gate; 12, hydraulic cylinder drive device; 12 -1 Left drive cylinder; 12-2, left swing arm; 12-3, right drive cylinder; 12-4, right swing arm; 13, chute fixing plate.

detailed description

The present invention will be described in detail below with reference to the drawings and specific embodiments.

As shown in Fig. 1, Fig. 2, Fig. 7 to Fig. 10, a large-tonnage skip gate and diversion cover joint opening device includes a skip, skip gates 11 installed on both sides of the skip front and back, and a skip installed on the skip The diversion sluice gate 9 at the lower end of the left side of the bucket, the skip gate 11 is a sector gate, the upper end of the skip gate 11 is hinged to the upper end of the skip opening, and is opened and closed by an opening device; the characteristic is that the opening The device includes a hydraulic cylinder drive device 12 and a multi-link mechanism that are symmetrically arranged on the front and back sides of the skip. The hydraulic drive device 12 is connected to the skip gate 11 to drive the gate to open and close; the multi-link mechanism includes

link rods

1, 1. Two 4, connecting rod three 6, connecting rod four 7, connecting rod five 8 and the chute fixing plate 13 for installing each connecting rod, the chute fixing plate 13 is fixed on the front and rear sides of the skip, one end of the connecting rod second 4 is connected to the skip The gate 11 is hinged, and the other end and the one end of the link rod 1 are hinged together on the slide block 2, the slide block 2 is limited to slide up and down in the groove of the slide fixing plate 13, the other end of the link rod 1 and the connecting rod One end of the four 7 is hinged to the two ends of the link frame 10 respectively, the middle of the one link 10 is hinged to the lower end of the chute fixing plate 13, the other end of the four link 7 and the one end of the three link 6 are hinged together On block two 3, the slider two 3 is limited to slide up and down in the groove of the chute fixing plate 13, the limit groove of the slider one 2 is arranged in parallel with the limit groove of the slider two 3, and the other end of the connecting rod three 6 It is hinged with one end of the connecting rod five 8 at one end of the connecting rod frame 2 5, the other end of the connecting rod frame 2 5 is hinged at the top of the chute fixing plate 13, and the other end of the connecting rod 5 8 is hinged at the inner side of the shroud gate 9 .

As shown in FIG. 3, the hydraulic cylinder drive device includes a left drive cylinder 12-1, a left swing arm 12-2, a right drive cylinder 12-3 and a right swing arm 12-4, which are symmetrically fixed on the front and rear sides of the skip; When coal is coal, the right end of the left swing arm 12-2 pushes the roller of the fan-shaped skip gate 11 upward and swings to open the skip door; when the coal is unloaded, the left end of the right swing arm 12-4 pushes the roller of the fan-shaped skip gate 11 Swing down and left to close the skip gate.

As shown in FIG. 4, when the hydraulic cylinder driving device 12 at the left end pushes the skip gate 11 to the right, the skip gate 11 opens to the upper right, and simultaneously drives the connecting rod 2 to move upward, and the slider 1 to move upward along the limit slot Slide, driven by the slider 1, the connecting rod 1 moves upward, the connecting rod 10 rotates counterclockwise around the hinge fixed on the skip, so that the connecting rod 4 moves downward, the slider 2 3 Slide down, driven by the slider two 3, the link three 6 moves down, the link three 6 drives the link lever two 5 to rotate counterclockwise, so that the link three 6 and the link five 8 The position of the compound hinge point is lowered, so that the end of the connecting rod 5 and the shroud gate 9 moves upward to push the shroud gate 9 to open, so that the skip gate 11 and the shroud gate 9 are jointly opened; the hydraulic pressure at the right end When the cylinder drive device 12 pushes the skip gate 11 to the left, the skip gate 11 closes to the left and lowers, and at the same time drives the connecting rod 2 to move downward, the

slider

1 and 2 slide down along the limit groove, and the

slider

1 and 2 Driven by, the connecting rod 1 moves downwards, the connecting rod 10 rotates clockwise around the hinge fixed on the skip, so that the connecting

rods

4 and 7 move upward, and the

slider

2 and 3 slide down, Driven by the slider two 3, the connecting rod three 6 moves upward, and the connecting rod three 6 drives the connecting rod two 5 to rotate clockwise, so that the position of the compound hinge point of the connecting rod three 6 and the connecting rod five 8 rises, so that The end of the connecting rod 5 and the diversion sluice gate 9 moves upward to pull the diversion sluice gate 9 to close, so as to realize the joint closure of the skip gate and the diversion hood.

As shown in FIG. 5, the side of the link frame 10 connected to the link 1 is the right link frame 10-1, and the side connected to the link four 7 is the left link frame 10-2. When the angle between the right link frame 10-1 and the link 1 is 180°, the skip gate 11 and the diversion gate 9 reach the open lock position, as shown in FIG. 6, when the right link frame 10-1 When the angle with the connecting rod 1 is 0°, the skip gate 11 and the diversion gate 9 reach the closed locking position.

As shown in FIG. 5, when the skip gate 11 and the diversion gate 9 reach the open lock position, the slider 1 stops sliding upward, and the hydraulic cylinder drive device 12 at the left end stops pushing the skip gate 11 upward to open the skip gate 11 Open to the maximum position, while the link rod 10 is locked, each link mechanism on the left side also stops moving, and the diversion gate 9 stops to open to the upper left; as shown in Figure 6, the skip gate 11 and the diversion grid When the gate 9 reaches the closed and locked position, the slider 12 stops sliding downward, the hydraulic cylinder drive device 12 at the right end stops pushing the skip gate 11 to close downward, the skip gate 11 is completely closed, and the connecting rod 10 is locked at the same time , The linkages on the left also stop moving, and the shroud gate 9 is completely closed. Through the two dead points of the mid-level six-bar mechanism in the process of sliding up and down of the slider in the joint opening device of the skip gate and the diversion cover, the positions of the skip gate and the diversion cover gate can be accurately controlled to avoid the limit position The inaccurate shut-off caused by inaccuracy or failure to reset occurs.

Claims

A large-tonnage skip gate and diversion cover joint opening device includes a skip, skip gates (11) installed on the front and back sides of the skip, and a diversion gate gate (9) installed on the lower left end of the skip, The skip gate (11) is a fan-shaped gate, the upper end of the skip gate (11) is hinged to the upper end of the skip opening, and is driven to open and close by an opening device; characterized in that the opening device includes a symmetrically arranged skip Front and rear hydraulic cylinder drive device (12) and multi-link mechanism, hydraulic drive device (12) is connected with skip gate (11) to drive the gate to open and close; multi-link mechanism includes link one (1), Rod two (4), link three (6), link four (7), link five (8), and the chute fixing plate (13) where each link is installed, the chute fixing plate (13) is fixed in the dustpan On both sides of the bucket, one end of the connecting rod two (4) is hinged to the skip gate (11), and the other end is hinged to the end of the connecting rod one (1) on the slider one (2), the slider one (2) is limited Sliding up and down in the slot of the chute fixing plate (13), the other end of the connecting rod one (1) and one end of the connecting rod four (7) are hinged at the two ends of the connecting rod holder one (10), respectively The middle of one (10) is hinged at the lower end of the chute fixing plate (13), the other end of the connecting rod four (7) and one end of the connecting rod three (6) are hinged together on the slider two (3), and the slider two (3) 3) The limiter slides up and down in the slot of the slide fixing plate (13), the limit slot of the slider one (2) and the limit slot of the slider two (3) are arranged in parallel, and the other of the connecting rod three (6) One end and one end of connecting rod five (8) are hinged together at one end of connecting rod holder two (5), the other end of connecting rod holder two (5) is hinged at the top of chute fixing plate (13), connecting rod five (8) The other end of is hinged inside the shroud gate (9).
The large-tonnage skip gate and diversion cover joint opening device according to claim 1, characterized in that the hydraulic cylinder drive device (12) includes a left drive cylinder (12-1), a left swing arm (12-2), Right drive cylinder (12-3) and right swing arm (12-4), hydraulic cylinder drive device (12) are used in pairs, and installed symmetrically on the front and back sides of the skip; when unloading coal, the left swing arm (12-) 2) The right end pushes the roller of the fan-shaped skip gate (11) to swing to the upper right to open the skip gate; when the coal is unloaded, the left end of the right swing arm (12-4) pushes the roller of the fan-shaped skip gate (11) toward Swing down the left to close the skip gate.
The joint opening device of a large-tonnage skip gate and a shroud according to claim 1 or 2, characterized in that the side where the connecting rod frame (10) and connecting rod (1) are connected is a right connecting rod Frame (10-1), the side connected to link four (7) is the left link frame (10-2), when the angle between the right link frame (10-1) and the link (1) When it is 180°, the skip gate (11) and the diversion gate (9) reach the open lock position. When the angle between the right link frame (10-1) and the link (1) is 0°, The skip gate (11) and the diversion gate (9) reach the closed locking position.