A protective loader conveyor ladder trough
By designing retractable escalators and retractable protective barriers, the problems of height adjustment of the unloading trough of the transfer conveyor and the extension and retraction of the protective barriers were solved, thereby improving safety and adaptability and reducing operational risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI COAL MINE MASCH MFG CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-30
Smart Images
Figure CN224428885U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of underground scraper conveyors in coal mines, specifically relating to a protective loading conveyor ladder trough. Background Technology
[0002] In longwall top-coal caving mining faces, the unloading chute of the transfer conveyor, as a key component connecting the front and rear scraper conveyors and the transfer machine, plays a crucial role in receiving and transferring materials. However, existing ladder-type unloading chute technologies have the following problems: First, due to the dynamic changes in the roof height of the working face, traditional fixed-height ladders cannot be flexibly adjusted, leading to safety hazards for workers climbing them; second, as the working face advances, the position of the scraper conveyor head unloading point relative to the transfer machine constantly changes, and the existing protective baffles lack telescopic adjustment functionality, making it easy for workers to accidentally enter the dangerous area of the unloading chute when operating the transmission device, increasing operational risks. Therefore, there is an urgent need to develop a new type of transfer conveyor unloading chute with height-adjustable ladders and telescopic protective baffles to improve the safety and adaptability of the equipment and ensure the operational safety of workers. Utility Model Content
[0003] This utility model aims to at least solve one of the technical problems existing in the prior art. Therefore, one aspect of this utility model is to provide a protective escalator trough for a loading conveyor. The escalator trough includes a retractable escalator and a retractable protective baffle. The protective loading conveyor is provided with an unloading opening trough and an unloading trough baffle. The unloading opening trough is provided with trough positioning holes, and the retractable protective baffle is provided with protective baffle positioning holes. The number and position of the trough positioning holes and the protective baffle positioning holes correspond to each other. The retractable escalator is slidably disposed within the movable slot of the unloading groove baffle, which is connected to the positioning hole of the protective baffle by bolts. The retractable escalator is provided with a escalator fixing hole, and the retractable protective baffle is provided with a protective baffle fixing hole. The escalator fixing hole and the protective baffle fixing hole are connected by bolts. The retractable escalator and the retractable protective baffle are arranged perpendicular to each other. The retractable escalator and the unloading groove baffle are arranged perpendicular to each other. The retractable protective baffle and the unloading opening groove are arranged perpendicular to each other.
[0004] Preferably, the retractable escalator includes an escalator fixing frame and a retractable escalator assembly. The escalator fixing frame is slidably disposed in a movable slot, and the retractable escalator assembly is vertically disposed on the escalator fixing frame. There are two types of retractable escalator assemblies, which are respectively vertically disposed on two opposite sides of the escalator fixing frame.
[0005] Preferably, the retractable escalator assembly includes a hollow steel pipe frame, a handrail steel pipe, a connecting plate, a support plate, a first telescopic cylinder, cotter pins, pins, and stop pins. The hollow steel pipe frame is fixedly mounted on the escalator mounting frame. The handrail steel pipe is slidably connected to the hollow steel pipe frame. The connecting plate is fixedly mounted on the handrail steel pipe. Four sets of cotter pins, pins, and stop pins are provided: one set is fixedly mounted on the connecting plate, and three sets are mounted on the support plate. The first telescopic cylinder is movably mounted on the support plate via the cotter pins, pins, and stop pins on the three sets of support plates. The first telescopic cylinder is connected to the handrail steel pipe via the cotter pins, pins, and stop pins on the connecting plate.
[0006] Preferably, the retractable protective baffle includes a protective baffle, an upper track plate, and a lower track plate. The upper track plate and the lower track plate are fixedly mounted on the protective baffle and are arranged in parallel. The fixing holes of the protective baffle are located on the upper track plate.
[0007] Preferably, the retractable protective baffle further includes a second hydraulic cylinder, a third hydraulic cylinder, and a telescopic plate. The second and third hydraulic cylinders are arranged in parallel on the protective baffle. There are two sets of telescopic plates, namely an inner telescopic plate and an outer telescopic plate. A cotter pin, a pin shaft, and a stop pin are fixedly provided on the telescopic plate. The second hydraulic cylinder is connected to the outer telescopic plate through the cotter pin, pin shaft, and stop pin. The third hydraulic cylinder is connected to the inner telescopic plate through the cotter pin, pin shaft, and stop pin.
[0008] Preferably, the retractable protective baffle further includes a cylinder fixing bracket, which is fixedly mounted on the protective baffle, and the second and third cylinders are mounted on the protective baffle via the cylinder fixing bracket.
[0009] The beneficial effects of this utility model are as follows:
[0010] This invention features a retractable escalator that adjusts its height in real time according to changes in the working face's roof height, ensuring safe and convenient passage for workers. Simultaneously, a retractable protective baffle structure, through the coordinated adjustment of the inner and outer retractable plates, adapts to dynamic positional changes between the unloading points of the transfer machine and the front and rear scraper conveyors, effectively preventing personnel from accidentally entering the hazardous area of the unloading trough. This design not only improves the safety and adaptability of the equipment but also reduces operational risks during the advancement of the fully mechanized mining face, ensuring personnel safety while simultaneously increasing production efficiency.
[0011] Additional aspects and advantages of this invention will become apparent from the description which follows, or may be learned by practice of this invention. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0013] Figure 1 This is a schematic diagram of the structure of the protective loading conveyor ladder trough of this utility model;
[0014] Figure 2 This is a schematic diagram of the retractable escalator structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the escalator fixing frame structure of this utility model;
[0016] Figure 4 This is a schematic diagram of the steel pipe structure of the handrail of this utility model;
[0017] Figure 5 This is a schematic diagram of the retractable protective baffle structure of this utility model;
[0018] Figure 6 This is a schematic diagram of the protective baffle structure of this utility model;
[0019] Figure 7 This is a schematic diagram of the telescopic plate structure of this utility model;
[0020] The correspondence between the reference numerals and component names in the figure is as follows:
[0021] 1 is a retractable escalator, 11 is an escalator fixing hole, 12 is an escalator fixing frame, 13 is a retractable escalator assembly, 131 is a hollow steel pipe frame, 132 is a handrail steel pipe, 133 is a connecting plate, 134 is a support plate, 135 is the first telescopic cylinder, 136 is a cotter pin, 137 is a pin shaft, 138 is a stop pin, 2 is a retractable protective baffle, 21 is a protective baffle positioning hole, 22 is a protective baffle fixing hole, 23 is a protective baffle, 24 is an upper track plate, 25 is a lower track plate, 26 is a second cylinder, 27 is a third cylinder, 28 is a telescopic plate, 281 is an inner telescopic plate, 282 is an outer telescopic plate, and 29 is a cylinder fixing frame. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] This utility model protects the escalator trough of a loading conveyor, comprising a retractable escalator 1, escalator fixing holes 11, escalator fixing frame 12, retractable escalator assembly 13, hollow steel pipe frame 131, handrail steel pipe 132, connecting plate 133, support plate 134, first telescopic cylinder 135, cotter pin 136, pin shaft 137, stop pin 138, retractable protective baffle 2, protective baffle positioning hole 21, protective baffle fixing hole 22, protective baffle 23, upper track plate 24, lower track plate 25, second cylinder 26, third cylinder 27, telescopic plate 28, inner telescopic plate 281, outer telescopic plate 282, and cylinder fixing frame 29.
[0025] like Figure 1 As shown, the protective loading conveyor is equipped with an unloading opening trough 3 and an unloading trough baffle 4. The unloading opening trough 3 is equipped with a trough positioning hole 31. The number and position of the trough positioning hole 31 and the protective baffle positioning hole 21 correspond to each other. The trough positioning hole 31 and the protective baffle positioning hole 21 are connected by bolts. The unloading trough baffle 4 is equipped with a movable slot 41. The retractable escalator 1 is slidably installed in the movable slot 41. The escalator fixing hole 11 and the protective baffle fixing hole 22 are connected by bolts. The retractable escalator 1 and the retractable protective baffle 2 are arranged perpendicular to each other. The retractable escalator 1 and the unloading trough baffle 4 are arranged perpendicular to each other. The retractable protective baffle 2 and the unloading opening trough 3 are arranged perpendicular to each other.
[0026] like Figure 2 As shown, the escalator fixing frame 12 is slidably disposed in the movable slot 41, and the retractable escalator assembly 13 is vertically disposed on the escalator fixing frame 12. There are two types of retractable escalator assemblies 13, which are vertically disposed on two opposite sides of the escalator fixing frame 12 respectively.
[0027] like Figure 3 , 4As shown, the hollow steel pipe frame 131 is fixedly mounted on the escalator fixing frame 12. The handrail steel pipe 132 is sleeved inside the hollow steel pipe frame 131 and slidably connected to it. The connecting plate 133 is fixedly mounted on the handrail steel pipe 132. There are four sets of cotter pins 136, pins 137 and stop pins 138. One set is fixedly mounted on the connecting plate 133 and three sets are mounted on the support plate 134. The first telescopic cylinder 135 is movably mounted on the support plate 134 through the cotter pins 136, pins 137 and stop pins 138 on the three sets of support plates 134. The first telescopic cylinder 135 is connected to the handrail steel pipe 132 through the cotter pins 136, pins 137 and stop pins 138 on the connecting plate 133.
[0028] like Figure 5 , 6 As shown in Figure 7, the upper track plate 24 and the lower track plate 25 are fixedly mounted on the protective baffle 23. The upper track plate 24 and the lower track plate 25 are arranged in parallel. The protective baffle fixing hole 22 is provided on the upper track plate 24. The second hydraulic cylinder 26 and the third hydraulic cylinder 27 are arranged in parallel on the protective baffle 23. The telescopic plate 28 is provided with two sets, namely the inner telescopic plate 281 and the outer telescopic plate 282. The telescopic plate 28 is fixedly mounted with a cotter pin 136, a pin shaft 137 and a stop pin 138. The second hydraulic cylinder 26 is connected to the outer telescopic plate 282 through the cotter pin 136, the pin shaft 137 and the stop pin 138. The third hydraulic cylinder 27 is connected to the inner telescopic plate 281 through the cotter pin 136, the pin shaft 137 and the stop pin 138. The hydraulic cylinder fixing bracket 29 is fixedly mounted on the protective baffle 23. The second hydraulic cylinder 26 and the third hydraulic cylinder 27 are mounted on the protective baffle 23 through the hydraulic cylinder fixing bracket 29.
[0029] In actual operation, the first telescopic cylinder 135 is activated to push the handrail steel pipe 132 upward. The height of the escalator is adjusted according to the change in the height of the working surface top plate, so that the safety of the staff when passing through the escalator can be guaranteed.
[0030] As the working face advances, the unloading points of the front and rear scraper conveyors change relative to the transfer conveyor. The second cylinder 26 (or the third cylinder 27) can be activated alone to push the outer telescopic plate 282 (inner telescopic plate 281) outward. Alternatively, the second cylinder 26 and the third cylinder 27 can be activated simultaneously to push the outer telescopic plate 282 and the inner telescopic plate 281 outward, extending the area of the protective baffle 23. The telescopic protective baffle reduces the risk of workers accidentally entering the unloading trough of the transfer conveyor.
[0031] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.
Claims
1. A protective chute for a loading conveyor ladder, characterized in that: The escalator trough includes a retractable escalator (1) and a retractable protective baffle (2). The protective loading conveyor is provided with an unloading opening trough (3) and an unloading trough baffle (4). The unloading opening trough (3) is provided with a trough positioning hole (31), and the retractable protective baffle (2) is provided with a protective baffle positioning hole (21). The number and position of the trough positioning holes (31) and the protective baffle positioning holes (21) correspond to each other. The trough positioning holes (31) and the protective baffle positioning holes (21) are connected by bolts. The unloading trough baffle (4) is provided with a movable slot (41). The retractable escalator (1) is slidably disposed in the movable slot (41). The retractable escalator (1) is provided with an escalator fixing hole (11). The retractable protective baffle (2) is provided with a protective baffle fixing hole (22). The escalator fixing hole (11) and the protective baffle fixing hole (22) are connected by bolts. The retractable escalator (1) and the retractable protective baffle (2) are arranged perpendicular to each other. The retractable escalator (1) and the unloading slot baffle (4) are arranged perpendicular to each other. The retractable protective baffle (2) and the unloading opening slot (3) are arranged perpendicular to each other.
2. The protective loader conveyor ladder trough according to claim 1, characterized in that: The retractable escalator (1) includes an escalator fixing frame (12) and a retractable escalator assembly (13). The escalator fixing frame (12) is slidably disposed in a movable slot (41). The retractable escalator assembly (13) is vertically disposed on the escalator fixing frame (12). There are two types of retractable escalator assemblies (13), which are respectively vertically disposed on two opposite sides of the escalator fixing frame (12).
3. The protective loader conveyor ladder trough according to claim 2, characterized in that: The retractable escalator assembly (13) includes a hollow steel pipe frame (131), a handrail steel pipe (132), a connecting plate (133), a support plate (134), a first telescopic cylinder (135), a cotter pin (136), a pin shaft (137), and a stop pin (138). The hollow steel pipe frame (131) is fixedly mounted on the escalator fixing frame (12). The handrail steel pipe (132) is sleeved inside the hollow steel pipe frame (131) and slidably connected to it. The connecting plate (133) is fixedly mounted on the handrail steel pipe (132). The cotter pin (135) is fixedly mounted on the handrail steel pipe (132). Four sets of pins (136), pins (137), and stop pins (138) are provided. One set is fixed on the connecting plate (133), and three sets are provided on the support plate (134). The first telescopic cylinder (135) is movably mounted on the support plate (134) through the three sets of cotter pins (136), pins (137), and stop pins (138) on the support plate (134). The first telescopic cylinder (135) is connected to the handrail steel pipe (132) through the cotter pins (136), pins (137), and stop pins (138) on the connecting plate (133).
4. The protective loader conveyor ladder trough according to claim 1, characterized in that: The retractable protective baffle (2) includes a protective baffle (23), an upper track plate (24) and a lower track plate (25). The upper track plate (24) and the lower track plate (25) are fixedly mounted on the protective baffle (23). The upper track plate (24) and the lower track plate (25) are arranged in parallel. The protective baffle fixing hole (22) is provided on the upper track plate (24).
5. A protective loader conveyor ladder trough according to claim 4, characterized in that: The retractable protective baffle (2) also includes a second hydraulic cylinder (26), a third hydraulic cylinder (27), and a telescopic plate (28). The second hydraulic cylinder (26) and the third hydraulic cylinder (27) are arranged in parallel on the protective baffle (23). The telescopic plate (28) is provided in two sets, namely an inner telescopic plate (281) and an outer telescopic plate (282). The telescopic plate (28) is fixedly provided with a cotter pin (136), a pin shaft (137), and a stop pin (138). The second hydraulic cylinder (26) is connected to the outer telescopic plate (282) through the cotter pin (136), the pin shaft (137), and the stop pin (138). The third hydraulic cylinder (27) is connected to the inner telescopic plate (281) through the cotter pin (136), the pin shaft (137), and the stop pin (138).
6. A protective loader conveyor ladder trough according to claim 5, characterized in that: The retractable protective baffle (2) also includes a cylinder fixing bracket (29), which is fixedly mounted on the protective baffle (23). The second cylinder (26) and the third cylinder (27) are mounted on the protective baffle (23) through the cylinder fixing bracket (29).