Crushing device at transshipment position of scraper conveyor head

Abstract

The utility model relates to the technical field of fully mechanized coal mining of coal mines, in particular to a crushing device at a transshipment position of a scraper conveyor head, which comprises a support component and a swing arm component rotationally connected onto the support component. Wherein the swing arm assembly is provided with a driving part and is rotationally connected with a shaft rod, and the driving part and the shaft rod are in power transmission through a transmission mechanism so as to drive the shaft rod to rotate in the circumferential direction. The problem that a scraper conveyor is blocked at a transfer opening due to large coal blocks can be effectively solved, through the optimized design, the size of the crushing device is reduced, the structure is simplified, and the labor intensity of operators is remarkably reduced. In addition, the crushing efficiency of the large coal is remarkably improved, so that a technical guarantee is provided for smooth operation of a coal conveying system, and the practicability of the device in industrial application is embodied.

Description

Technical Field

[0001] The utility model relates to the technical field of fully mechanized mining of coal mines, in particular to a crushing device at a head transfer position of a scraper conveyor. Background Art

[0002] During coal seam formation, the coal wall is squeezed, resulting in inadequate development of internal cracks and joints, which can lead to the formation of flaky structures or faults. During shearer operations, impact, vibration, and cutting forces can cause the coal wall to spall along the cracks, creating flaky coal blocks of varying sizes that fall onto the scraper conveyor.

[0003] In a fully mechanized coal mining face, the scraper conveyor is a crucial component of the coal flow transportation system. Cut coal blocks are transported to the surface via the scraper conveyor, a transfer conveyor, and a belt conveyor. However, when the coal passes through the scraper conveyor and reaches the 90° corner of the transfer conveyor, large coal blocks can easily become stuck in the corner, causing blockage in the scraper conveyor, impacting coal transportation efficiency, and increasing safety risks.

[0004] In order to solve the problem of blockage of transfer ports caused by large coal lumps, a variety of crushing solutions have been proposed, such as rocker arm devices and impact crushing devices. When designing relevant crushing devices, most of them adopt hydraulic drive, such as the coal lump crusher for underground coal conveyor transfer machine disclosed in Chinese patent publication number "CN101890384B".

[0005] Hydraulic drive structures are generally large in size and have many restrictions on installation locations. In addition, the crushing efficiency is difficult to guarantee when continuously crushing large pieces of coal. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the hydraulic drive structure in the prior art, such as being generally large in size and low in efficiency, and to propose a crushing device at the transfer position of the head of a scraper conveyor.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] Design a crushing device at the head transfer point of a scraper conveyor, comprising a support assembly and a swing arm assembly rotatably connected to the support assembly;

[0009] Among them, a driving member and a shaft rod are installed on the swing arm assembly, and power is transmitted between the driving member and the shaft rod through a transmission mechanism to drive the shaft rod to rotate circumferentially. At least one mounting member is also installed on the shaft rod, and the mounting member has at least one connection position, and a hammer head is detachably connected to the connection position.

[0010] Furthermore, the support assembly includes two oppositely arranged support plates, and the swing arm assembly is installed between the two support plates.

[0011] Furthermore, the swing arm assembly includes two swing rods, and a cross bar is fixedly installed between the two swing rods;

[0012] A fixed shaft is fixedly connected between the two support plates, and the two rocker arms are rotatably connected to the fixed shaft.

[0013] Furthermore, the swing arm assembly further includes:

[0014] At least one pushing member, one end of at least one pushing member is pin-connected to the support plate, and the action end of the pushing member is pin-connected to the tail end of the swing rod.

[0015] Furthermore, the mounting members are provided in plurality and fixed at intervals on the outside of the shaft.

[0016] Furthermore, the mounting member is a plate member, and the connecting position is a protrusion formed on the side of the mounting member, wherein a plurality of connecting positions are distributed along the circumference of the side of the mounting member.

[0017] Furthermore, the hammer head includes a fixing seat and a head end fixed on the fixing seat, the fixing seat has an opening, and is sleeved on the outside of the connecting position through the opening;

[0018] The fixing seat and the connecting position are fixed via fasteners.

[0019] Furthermore, a circumferential locking structure is provided between the fixing seat and the connecting position.

[0020] Furthermore, the transmission mechanism includes a motor fixing plate fixedly mounted on the swing arm assembly, and the driving member is a motor fixed on the motor fixing plate, wherein sprockets are fixedly mounted on the shaft end of the motor and the outer side of the shaft, and the two sprockets transmit power through a chain.

[0021] Furthermore, it also includes a shell sleeved on the outside of the two sprockets, and the shell is fixed on the motor fixing plate.

[0022] This utility model proposes a crushing device for the transfer port of a scraper conveyor. Its beneficial effects include: It effectively resolves the problem of blockage at the transfer port of a scraper conveyor caused by large lumps of coal. Through optimized design, this device not only reduces the size of the crushing device and simplifies its structure, but also significantly reduces the labor intensity of operators. Furthermore, this device significantly improves the efficiency of crushing large lumps of coal, thereby providing technical support for the smooth operation of the coal conveying system and demonstrating its practicality in industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the swing arm assembly of the present utility model;

[0025] Figure 3 This is a schematic diagram of the sprocket structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the hammer structure of the present utility model.

[0027] In the figure: 1. Support assembly; 11. Support plate; 2. Swing arm assembly; 21. Swing rod; 22. Cross bar; 23. Fixed shaft; 24. Pusher; 3. Driving member; 4. Shaft; 5. Transmission mechanism; 51. Motor fixing plate; 52. Sprocket; 53. Housing; 6. Mounting part; 61. Connecting position; 7. Hammer head; 71. Fixed seat; 72. Head end. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-4 This is an embodiment of the present invention, which discloses a crushing device at the transfer port of a scraper conveyor. Obviously, the crushing device is installed at the transfer port of the scraper conveyor to achieve the crushing operation of large coal to avoid the problem of blockage of the transfer port. Specifically, the crushing device includes a support assembly 1 and a swing arm assembly 2 rotatably connected to the support assembly 1;

[0030] Among them, a driving member 3 and a shaft rod 4 are installed on the swing arm assembly 2. The driving member 3 and the shaft rod 4 are rotatably connected. The power is transmitted between the driving member 3 and the shaft rod 4 through a transmission mechanism 5 to drive the shaft rod 4 to rotate circumferentially. At least one mounting member 6 is also installed on the shaft rod 4. The mounting member 6 has at least one connection position 61, and a hammer head 7 is detachably connected to the connection position 61. That is to say, in this embodiment, the hammer head 7 is driven to hammer the coal block back and forth through the continuous rotation of the shaft rod 4 to complete the crushing operation. Compared with the transmission hydraulic crushing drive structure, the continuous rotation drive method in this scheme has a more continuous and smooth action and a higher knocking frequency, which further optimizes the crushing efficiency.

[0031] Reference Figure 2 In some embodiments, the support assembly 1 in the present invention includes two oppositely arranged support plates 11. In a further embodiment, a bent edge is formed at the bottom of the support plate 11, and a through hole is provided on the bent edge so that it can be connected and fixed to the conveyor by fasteners such as bolts during assembly. In addition, the swing arm assembly 2 is installed between the two support plates 11.

[0032] Reference Figure 2 On the basis of the above embodiment, the swing arm assembly 2 in this embodiment includes two swing rods 21, a cross bar 22 is fixedly installed between the two swing rods 21, and the shaft 4 is rotatably connected between the two swing rods 21;

[0033] A fixed shaft 23 is fixedly connected between the two support plates 11, and the two rocker arms 21 are rotatably connected to the fixed shaft 23. Preferably, the fixed shaft 23 in this embodiment can be fixed to the support plate 11 by a nut, and two nuts are threadedly connected at both ends of the fixed shaft 23, and the two nuts are clamped on both sides of the support plate 11, so that the fixed shaft 23 can be fixed.

[0034] Reference Figure 2 Furthermore, the swing arm assembly 2 in this embodiment further includes:

[0035] At least one pushing member 24 , one end of at least one pushing member 24 being pin-connected to the support plate 11 , and an actuating end of the pushing member 24 being pin-connected to a tail end of the swing rod 21 ;

[0036] Specifically, the pushing member 24 described in this embodiment is configured as a hydraulic cylinder. Furthermore, there are two hydraulic cylinders described in this embodiment, and the two hydraulic cylinders are pinned to the two support plates 11 respectively, for rotating and driving the two rocker arms 21, thereby improving the driving stability of the rocker arms 21. In addition, the lever principle is adopted between the pushing member 24 and the rocker arm 21, and the lifting and lowering of the crushing hammer head 7 is controlled by the pushing member 24. This design not only simplifies the structure of the crushing device, but also minimizes the volume and adjustable variables of the device while ensuring the crushing efficiency.

[0037] That is, in this embodiment, the left and right support plates 11 provide support for the entire device. The left and right hydraulic cylinders are connected to the left and right swing arms 21. The reciprocating motion of the pistons in the hydraulic cylinders drives the swing arms 21 to move, thereby adjusting the lifting and lowering of the crushing hammer head. The fixed shaft 23 is responsible for connecting the two swing arms 21 to ensure that they can move synchronously.

[0038] Preferably, in this embodiment, a plurality of mounting members 6 are provided and fixed at intervals on the outside of the shaft 4 .

[0039] Reference Figure 4 In some embodiments, the mounting member 6 in the present invention is a plate member, and the connecting position 61 is a protrusion formed on the side of the mounting member 6, wherein a plurality of connecting positions 61 are distributed along the circumference of the side of the mounting member 6. Specifically, the connecting positions 61 described in this embodiment are set to three, that is, three hammer heads 7 can be installed on each of the mounting members 6 in this embodiment. In addition, along the axial direction of the shaft 4, four mounting members 6 can be distributed in a matrix.

[0040] Reference Figure 4 In some embodiments, the hammer head 7 in the present invention includes a fixing seat 71 and a head end 72 fixed to the fixing seat 71. The head end 72 can be set as a metal part, such as high manganese steel or low carbon alloy steel. The fixing seat 71 has an opening and is sleeved on the outer side of the connecting position 61 through the opening.

[0041] The fixing seat 71 and the connecting position 61 are fixed by fasteners. Preferably, the fasteners described in this embodiment are configured as bolt and nut assemblies, and the bolt and nut assemblies are used to achieve the connection and fixation between the fixing seat 71 and the connecting position 61.

[0042] Of course, in order to ensure that the multiple hammer heads 7 on the same plane can maintain the same angle to achieve the stability of the coal block, a circumferential locking structure is further provided between the fixing seat 71 and the connecting position 61 in this embodiment. In a preferred embodiment, the circumferential locking structure can be provided as a positioning pin, that is, a positioning hole is provided on the side of the fixing seat 71 and the connecting position 61 that deviates from the locking member, and a positioning pin is passed through the two positioning holes to realize the locking of the circumferential connection position of the two, so that the multiple hammer heads 7 can be on the same plane when installed;

[0043] In addition, the circumferential locking structure described in other embodiments can also be set as a locking bolt bolted to the fixing seat 71, and a locking hole is opened on the connecting position 61. Through the plug-in fit of the locking bolt and the locking hole, the connection locking of the circumferential position between the fixing seat 71 and the connecting position 61 can also be completed.

[0044] Reference Figure 3 In addition, the transmission mechanism 5 in the present invention includes a motor fixing plate 51 fixedly mounted on the swing arm assembly 2, and the driving member 3 is a motor fixed on the motor fixing plate 51. Preferably, the motor described in this embodiment is configured as a hydraulic motor, wherein sprockets 52 are fixedly mounted on the shaft end of the motor and the outer side of the shaft rod 4, and the two sprockets 52 are driven by a chain.

[0045] Reference Figure 2 Of course, in order to protect the meshing portion between the sprocket 52 and the chain, this embodiment also includes a shell 53 which is sleeved on the outside of the two sprockets 52 , and the shell 53 is fixed on the motor fixing plate 51 .

[0046] Specifically, the hydraulic motor provides power to the sprocket 52 and the chain, thereby providing power for the rotation of the hammer head 7. The housing 53 provides protection for the sprocket chain, plays a role in preventing dust and preventing broken small pieces of coal from touching the chain, effectively increasing the service life of the equipment.

[0047] The hydraulic motor drives the sprocket 52 and the chain to rotate the crushing hammer 7, thereby crushing the large coal. The rotating hammer 7 not only meets the crushing requirements, but also reduces the volume of the crushing hammer, thereby reducing the volume of the crushing device as a whole.

[0048] During the coal transportation process, when the large coal is transported to the head transfer port of the scraper conveyor, the hydraulic pump is turned on to provide power to the entire oil pipeline, driving the piston in the pusher 24 to reciprocate, and then transmitting power through the swing arm assembly 2 to complete the lifting and lowering adjustment of the hammer head 7;

[0049] At the same time, the hydraulic oil pressurized by the hydraulic pump enters the motor, which in turn drives the sprocket 52 and its chain to rotate. The sprocket 52 transmits the rotational power to the mounting part 6 through the connection of the rotating shaft. The rotation of the mounting part 6 further drives the hammer head 7 to perform crushing action. Through this series of mechanical linkage and power transmission process, large lumps of coal can be effectively crushed to solve the problem that large lumps of coal are easily blocked at the transfer port of the scraper conveyor.

[0050] In summary, the scraper conveyor head transfer port crushing device proposed in this utility model can effectively solve the problem of scraper conveyor blockage caused by large coal lumps at the transfer port. Through optimized design, this device not only reduces the size of the crushing device and simplifies its structure, but also significantly reduces the labor intensity of operators. In addition, this device significantly improves the efficiency of large coal crushing, thus providing technical support for the smooth operation of the coal conveying system and demonstrating its practicality in industrial applications.

[0051] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crushing device at the transfer point of a scraper conveyor head, characterized in that: It comprises a support assembly (1) and a swing arm assembly (2) rotatably connected to the support assembly (1); The swing arm assembly (2) is provided with a driving member (3) and a shaft (4) which is rotatably connected thereto. The driving member (3) and the shaft (4) are powered by a transmission mechanism (5) to drive the shaft (4) to rotate circumferentially. At least one mounting member (6) is also mounted on the shaft (4). The mounting member (6) has at least one connection position (61). A hammer head (7) is detachably connected to the connection position (61).

2. The crushing device at the transfer point of the scraper conveyor according to claim 1, characterized in that: The support assembly (1) comprises two support plates (11) arranged opposite to each other, and the swing arm assembly (2) is installed between the two support plates (11).

3. The crushing device at the transfer point of the scraper conveyor according to claim 2, characterized in that: The swing arm assembly (2) comprises two swing rods (21), and a cross bar (22) is fixedly installed between the two swing rods (21); A fixed shaft (23) is fixedly connected between the two support plates (11), and the two rocker arms (21) are rotatably connected to the fixed shaft (23).

4. The crushing device at the transfer point of the scraper conveyor according to claim 3 is characterized in that: The swing arm assembly (2) further comprises: At least one pushing member (24), one end of at least one pushing member (24) is pin-connected to the support plate (11), and the action end of the pushing member (24) is pin-connected to the tail end of the rocker (21).

5. The crushing device at the transfer point of the scraper conveyor according to claim 1, characterized in that: The mounting members (6) are provided in plurality and fixed at intervals on the outside of the shaft (4).

6. A crushing device at the head transfer point of a scraper conveyor according to any one of claims 1 to 5, characterized in that: The mounting member (6) is a plate member, and the connecting position (61) is a protrusion formed on the side of the mounting member (6), wherein a plurality of connecting positions (61) are distributed along the circumference of the side of the mounting member (6).

7. A crushing device at the head transfer point of a scraper conveyor according to any one of claims 1 to 5, characterized in that: The hammer head (7) includes a fixing seat (71) and a head end (72) fixed on the fixing seat (71); the fixing seat (71) has an opening and is sleeved on the outer side of the connecting position (61) through the opening; The fixing seat (71) and the connecting position (61) are fixed via fasteners.

8. The crushing device at the transfer point of the scraper conveyor according to claim 7, characterized in that: A circumferential locking structure is also provided between the fixing seat (71) and the connecting position (61).

9. A crushing device at the head transfer point of a scraper conveyor according to any one of claims 1 to 5, characterized in that: The transmission mechanism (5) comprises a motor fixing plate (51) fixedly mounted on the swing arm assembly (2); the driving member (3) is a motor fixed on the motor fixing plate (51); sprockets (52) are fixedly mounted on the shaft end of the motor and on the outer side of the shaft (4); and the two sprockets (52) transmit power through a chain.

10. The crushing device at the transfer point of the scraper conveyor according to claim 9, characterized in that: It also includes a shell (53) sleeved on the outside of the two sprockets (52), and the shell (53) is fixed on the motor fixing plate (51).

Images