Belt conveyor head device with two telescopic sides

Abstract

The utility model relates to the technical field of coal mine underground mechanical equipment, in particular to a double-side telescopic belt conveyor head device which comprises a belt conveyor head frame, the belt conveyor head frame is of a square frame structure and comprises a top seat, a base and a connecting rod between the top seat and the base, and a hydraulic cylinder fixing support is installed on the top seat of the belt conveyor head frame. The two sides of the hydraulic cylinder fixing support are each provided with a hydraulic cylinder, supporting cylinders are installed below the hydraulic cylinders, a connecting frame is installed between the two supporting cylinders, supporting cylinder sleeves are arranged on the two sides of the connecting frame, and the supporting cylinders are sleeved with the supporting cylinder sleeves and can slide in the axial direction of the supporting cylinders. An unloading roller support is arranged at the end, in the extending direction of a piston rod of the hydraulic cylinder, of the connecting frame, an unloading roller is installed on the unloading roller support, and the piston rod of the hydraulic cylinder is connected with the unloading roller support. The belt conveyor head device can give way to the monorail crane by controlling stretching and retracting of the unloading roller, the design is scientific, reasonable, simple and effective, and reasonable distribution of mine space is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground coal mine mechanical equipment, and particularly relates to a belt head device with double-side telescopic function. Background Art

[0002] In mine exploitation, especially in underground coal mine exploitation, belt conveyors are commonly used mining machinery in the tunneling operation of coal mine production. Belt conveyors play a role of transporting the mined coal from the coal mining face to the unloading point through belt transportation in the tunneling operation. Due to reasons such as belt length and transportation power, a single belt conveyor has a limited transportation distance. Moreover, there are vertical roadways, horizontal roadways and inclined roadways in the mine, and a single belt conveyor cannot adapt to the complex and changeable transportation environment in the mine. Therefore, in the construction process of complex tunneling work, there are often various lap methods such as the downstream lap of two belt conveyors and the vertical T-shaped lap.

[0003] One form of the vertical T-shaped lap is that one belt conveyor is horizontally installed in the horizontal roadway, and the other belt conveyor is vertically installed in the vertical roadway, and the lap is carried out at the junction of the horizontal roadway and the vertical roadway. However, when two belt conveyors are vertically T-shaped lapped, because the transportation route of the monorail crane intersects with the lap route of the belt conveyor, it often causes the problem that the monorail crane cannot transport materials across the vertically installed belt conveyor, and the normal operation of the monorail crane is blocked, resulting in difficult transportation of production materials and reduced production efficiency. Therefore, spatial planning is particularly important in underground coal mine exploitation. In the existing underground coal mine exploitation operation, in order to coordinate the spatial positions of the monorail crane and the belt conveyor, it is often one thing at the expense of another. Either the transportation track of the monorail crane needs to be re-planned, or the vertical installation position of the belt conveyor needs to be re-arranged. However, after re-planning, the optimal configuration is abandoned, and there are waste phenomena such as overusing the mine space and overusing the base materials. Content of the Utility Model

[0004] Aiming at the problem that the vertical T-shaped lap of the belt conveyor blocks the transportation route of the monorail crane and re-planning the underground coal mine space wastes manpower and material resources, the utility model provides a belt head device with double-side telescopic function. Starting from the actual needs of the mine, the belt head device is transformed. When the monorail crane is in transportation operation, the belt conveyor "makes way" for the monorail crane by setting the belt head device with double-side telescopic function. The design is scientific, reasonable, simple, effective, safe and reliable.

[0005] The technical solution of the utility model is as follows:

[0006] A bilateral telescopic belt head device, including a belt head frame, the belt head frame is a cubic frame structure, including a top seat, a bottom seat and a connecting rod between the top seat and the bottom seat. A hydraulic cylinder fixed support is installed on the top seat of the belt head frame. A hydraulic cylinder is installed on each side of the hydraulic cylinder fixed support. A support cylinder is installed below each hydraulic cylinder. A connecting frame is installed between the two support cylinders. Support cylinder sleeves are arranged on both sides of the connecting frame. The support cylinder sleeves are sleeved on the support cylinders and can slide along the axial direction of the support cylinders. One end of the connecting frame along the extending direction of the piston rod of the hydraulic cylinder is provided with an unloading roller support. An unloading roller is installed on the unloading roller support. The piston rod of the hydraulic cylinder is connected to the unloading roller support. The belt bypasses the unloading roller through the upper part of the hydraulic cylinder fixed support.

[0007] The bilateral telescopic belt head device is installed at the upper end of the belt conveyor in the vertical roadway. The extending direction of the piston rod of the hydraulic cylinder points to the horizontal roadway communicating with the vertical roadway. During installation, the bilateral telescopic belt head device rotates 90° around the axis of the unloading roller, and the bottom seat of the belt head frame is fixedly connected to the vertical roadway. A support idler is arranged on the upper part of the hydraulic cylinder fixed support. The belt contacts the support idler and then bypasses the unloading roller.

[0008] Further, a driving roller is installed on the bottom seat of the belt head frame, and a transfer roller is installed on the connecting rod between the top seat and the bottom seat of the belt head frame.

[0009] Further, after the belt bypasses the unloading roller, it bypasses the driving roller and the transfer roller in sequence.

[0010] Further, the moving distance of the unloading roller is 1.3 - 1.7m.

[0011] After the bilateral telescopic belt head device is vertically installed in the vertical roadway, when the unloading roller contracts, the unloading roller is not higher than the bottom surface of the horizontal roadway; when the unloading roller extends, it is at least flush with the upper belt of the belt conveyor horizontally installed in the horizontal roadway; the upper belt refers to the belt away from the bottom of the horizontal roadway. The length of the connecting frame is greater than 1.7m to ensure that the movable distance of the connecting frame is greater than 1.7m. Further, support cylinder idlers are respectively installed on both sides of one end of the belt head frame close to the unloading roller. When the unloading roller expands and contracts, the support cylinder idlers are below the connecting frame and keep a rolling contact state with the connecting frame.

[0012] When the connecting frame drives the unloading roller to expand and contract, the support cylinder idlers installed at one end of the belt head frame support the connecting frame by sliding with the connecting frame.

[0013] Further, the hydraulic cylinder is connected to the hydraulic control valve group.

[0014] The hydraulic cylinder and the two-way lock on the hydraulic cylinder are controlled by the hydraulic control valve group to adjust the telescopic movement of the unloading roller and lock the position of the unloading roller after expansion and contraction.

[0015] The beneficial effects of the present utility model are as follows:

[0016] A belt head device with bilateral telescopic function provided by the present utility model uses the power of a hydraulic cylinder to drive the piston rod to reciprocate, thereby driving the unloading roller to perform telescopic movement under the pulling of the piston rods on both sides. However, due to the heaviness of the unloading roller, there may be instability when only pulled by the piston rods on both sides. Therefore, a combination of a support cylinder and a support cylinder sleeve is added under each piston rod. Similarly, under the power of the hydraulic cylinder, the support cylinder sleeve reciprocates on the support cylinder, thereby driving the connecting frame between the support cylinders to drive the unloading roller to perform telescopic movement, solving the problem that it is difficult to cross a belt conveyor with a vertical T-shaped lap when using a single track. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the belt head device with bilateral telescopic function of the present utility model placed horizontally.

[0019] In the figure, 1 - unloading roller, 2 - unloading roller bracket, 3 - support cylinder pulley, 4 - belt head frame, 5 - transfer roller, 6 - drive roller, 7 - support cylinder, 8 - hydraulic cylinder, 9 - support cylinder sleeve. Specific Embodiments

[0020] In order to enable those skilled in the art of this technology to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment 1

[0022] Refer to Figure 1, A bilateral telescopic belt head device, including a belt head frame 4. The belt head frame 4 is a cubic frame structure, including a top seat, a bottom seat, and connecting rods between the top seat and the bottom seat. A hydraulic cylinder fixed support is installed on the top seat of the belt head frame 4. On both sides of the hydraulic cylinder fixed support, a hydraulic cylinder 8 connected to a hydraulic control valve group is installed respectively. Below each hydraulic cylinder 8, a support cylinder 7 is installed. A connecting frame is installed between the two support cylinders 7. On both sides of the connecting frame, there are support cylinder sleeves 9. The support cylinder sleeves 9 are sleeved on the support cylinders 7 and can slide axially along the support cylinders 7. At one end of the connecting frame along the extending direction of the piston rod of the hydraulic cylinder 8, there is an unloading roller support 2. An unloading roller 1 is installed on the unloading roller support 2. The piston rod of the hydraulic cylinder 8 is connected to the unloading roller support 2. On both sides of one end of the belt head frame 4 close to the unloading roller 1, support cylinder idlers 3 are installed respectively. When the unloading roller 1 expands and contracts, the support cylinder idlers 3 are below the connecting frame and keep a rolling fit state with the connecting frame; on the bottom seat of the belt head frame 4, a driving roller 6 is installed, and on the connecting rod, a transfer roller 5 is installed. The belt bypasses the unloading roller 1 through the support roller above the hydraulic cylinder fixed support, and then bypasses the driving roller 6 and the transfer roller 5 in turn.

[0023] The bilateral telescopic belt head device is installed at the upper end of the belt conveyor in the vertical roadway. The extending direction of the piston rod of the hydraulic cylinder 8 points to the horizontal roadway communicating with the vertical roadway. The moving distance of the unloading roller 1 is 1.7 m. That is, when the unloading roller 1 expands and contracts, the top end of the unloading roller 1 is flush with the bottom surface of the horizontal roadway. When the unloading roller extends, the top end of the unloading roller 1 is higher than the upper belt of the belt conveyor horizontally installed in the horizontal roadway.

[0024] During use, press the button on the hydraulic control valve group, and the piston rod on the hydraulic cylinder 8 expands and contracts, thereby driving the unloading roller 1 connected to the unloading roller support 2 to expand and contract. Due to the large volume and weight of the unloading roller 1, the two piston rods are directly connected to the unloading roller support 2, and there is a risk of instability in driving the unloading roller 1 to expand and contract. Therefore, the combination of the support cylinder sleeve 9 and the support cylinder 7 is added. Similarly, using the power of the hydraulic cylinder 8, the support cylinder sleeve 9 is driven to expand and contract on the support cylinder 7 at the same frequency as the piston rod. Through the connecting frame between the support cylinders 7 and the unloading roller support 2, the unloading roller 1 is driven to expand and contract, providing a double insurance for the stable expansion and contraction movement of the unloading roller 1. At the same time, the setting of the support cylinder idlers 3 that keep a rolling fit with the connecting frame below the connecting frame can also maintain the stable state during the expansion and contraction movement of the connecting frame. That is, the support cylinder idlers 3 play a supporting role for the connecting frame.

[0025] When the monorail hoist is not working, the unloading roller 1 extends and is connected to the upper belt of the belt conveyor horizontally placed in the horizontal roadway, and the two belt conveyors with vertical T-shaped connection operate normally for transportation; when the monorail hoist is working, the transportation work of the two belt conveyors stops, and the unloading roller 1 retracts into the vertical roadway (below the bottom plate of the horizontal roadway) to make way for the monorail hoist.

[0026] Embodiment 2

[0027] The difference from Embodiment 1 is that according to the distance between the bottom surface of the horizontal roadway and the upper belt of the belt conveyor horizontally installed in the horizontal roadway, the moving distance of the unloading roller 1 can also be 1.3 m.

[0028] Although the present utility model has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present utility model is not limited thereto. Without departing from the spirit and essence of the present utility model, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present utility model, and all such modifications or substitutions should be within the scope of the present utility model. / Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present utility model, and all of them should be covered within the protection scope of the present utility model.

Claims

1. A double-sided retractable belt head device, comprising a belt head frame (4), characterized in that, The belt headstock (4) is a cubic frame structure, including a top seat, a bottom seat and connecting rods between the top seat and the bottom seat. A hydraulic cylinder fixed support is installed on the top seat of the belt headstock (4). One hydraulic cylinder (8) is installed on each side of the hydraulic cylinder fixed support. A support cylinder (7) is installed below each hydraulic cylinder (8). A connecting frame is installed between the two support cylinders (7). Support cylinder sleeves (9) are arranged on both sides of the connecting frame. The support cylinder sleeves (9) are sleeved on the support cylinders (7) and can slide axially along the support cylinders (7). One end of the connecting frame along the extending direction of the piston rod of the hydraulic cylinder (8) is provided with an unloading roller support (2). An unloading roller (1) is installed on the unloading roller support (2). The piston rod of the hydraulic cylinder (8) is connected to the unloading roller support (2). The belt bypasses the unloading roller (1) through the upper part of the hydraulic cylinder fixed support.

2. The bilateral retractable belt head device according to claim 1, characterized in that, A driving roller (6) is installed on the bottom seat of the belt headstock (4), and a transfer roller (5) is installed on the connecting rod.

3. A double-sided retractable belt head device according to claim 2, characterized in that, The belt bypasses the unloading roller (1) and then successively bypasses the driving roller (6) and the transfer roller (5).

4. A bilateral retractable belt head device according to claim 1, characterized in that, The moving distance of the unloading roller (1) is 1.3 - 1.7 m.

5. A double-sided retractable belt head device according to claim 1, characterized in that, Support cylinder idlers (3) are respectively installed on both sides of one end of the belt headstock (4) close to the unloading roller (1). When the unloading roller (1) expands and contracts, the support cylinder idlers (3) are below the connecting frame and keep a rolling contact state with the connecting frame.

6. The bilateral retractable belt head device according to claim 1, characterized in that, The hydraulic cylinder (8) is connected to the hydraulic control valve group.

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