Safety protection frame of underground carry-scraper
By installing a telescopic baffle guardrail driven by rods, support plates and servo motors on the underground shovel machine, the problem of falling rocks damage to the cab during underground excavation operations is solved, and the protection and working efficiency of the driver are improved.
Patent Information
- Application Number
- CN202422559256.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-23
AI Technical Summary
During excavation operations, rocks falling overhead can easily damage the cab, resulting in driver injury and low work efficiency.
A safety guardrail including mounting rods, arc support plates, support rods, long connecting rods, semicircular protective plates and servo motors is designed to protect the cab through the servo motor to prevent rockfalls.
Effectively protect the cab and the shovel shell to avoid damage and improve working efficiency.
Smart Images

Figure CN223281375U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle protection equipment, in particular to a safety protection frame for an underground scraper. Background Art
[0002] The underground LHD safety guard is a crucial safety device installed on underground LHDs. Typically constructed from high-strength materials, it effectively protects the operator during operation, preventing injuries from falling rocks, collapses, and other unexpected events. Its significance significantly improves the safety of underground LHD operations, providing reliable protection for operators and ensuring safe and stable production in underground mines and other workplaces.
[0003] When underground shovel loaders were first designed, their body length, width, and height were reduced compared to ordinary shovel loaders in order to adapt to the narrow underground environment. They can operate flexibly in limited underground spaces and often do not have any protective structures. However, when excavating underground, rocks often fall from overhead, damaging the shovel loader's outer shell. In severe cases, the cab can be damaged, causing injury to the driver, rendering the shovel loader unable to move, greatly affecting work efficiency. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the existing underground excavation operation, in which rocks often fall from the top of the head and cause damage to the outer shell of the scraper, and in serious cases, damage the cab, causing injury to the driver, making the scraper unable to move, and greatly affecting the work efficiency. An underground scraper safety protection frame is proposed to solve the problem that when the existing underground excavation operation is carried out, rocks often fall from the top of the head and cause damage to the outer shell of the scraper, and in serious cases, damage the cab, causing injury to the driver, and making the scraper unable to move, which greatly affects the work efficiency.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A safety protection frame for an underground scraper loader comprises symmetrically distributed mounting rods, the inner walls of the mounting rods being fixedly connected with evenly distributed connecting blocks, symmetrically distributed arc support plates being fixedly connected to the outer walls at both ends of the mounting rods, evenly distributed support rods being arranged between the opposite inner walls of the arc support plates, a long connecting rod being passed through the middle ends of the support rods, a semicircular protective plate being provided on the outer walls of the arc support plates, a grid frame being fixedly connected to the inner walls of the arc support plates, a servo motor being provided on the grid frame, and the servo motor being connected to a telescopic baffle via a telescopic structure.
[0007] Preferably, the connecting block is provided with evenly distributed mounting holes.
[0008] Preferably, short connecting rods are symmetrically arranged on both sides of the long connecting rod, and both ends of the short connecting rods are fixedly connected to the outer walls of the support rods.
[0009] Preferably, the top connection of the grid frame is fixedly connected with symmetrically distributed triangular support rods, and the top ends of the triangular support rods are fixedly connected to the bottom ends of the outer walls of the middle support rods.
[0010] Preferably, the semicircular protective plate is provided with evenly distributed screw threads, which penetrate the semicircular protective plate and are threadedly connected to the outer wall of the arc support plate.
[0011] Preferably, the telescopic structure includes a symmetrically distributed fixed plate, a first pulley, a second pulley, a belt, a limit rod, and a threaded rod. The fixed plate is fixedly connected to the inner wall of the support rod, the first pulley is fixedly connected to the output end of the servo motor, the second pulley is rotatably connected to the fixed plate, and the first pulley is connected to the second pulley through a belt.
[0012] Preferably, the limiting rod is fixedly connected to the inner wall of the fixed plate, the threaded rod is rotatably connected to the inner wall of the fixed plate, the second pulley is fixedly connected to the threaded rod, the threaded rod is threadedly connected to the telescopic baffle, the limiting rod is slidably connected to the telescopic baffle, and the telescopic baffle is slidably connected to the fixed plate on one side.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] When in use, the utility model can be connected to the outer shell of the scraper loader by setting a protective frame composed of a mounting rod, an arc support plate and a support rod, a long connecting rod, and a semicircular protective plate through the mounting holes on the connecting block to protect the outer shell of the engine position at the rear of the scraper loader. The servo motor provided drives the telescopic baffle to extend toward the direction of the cab to block falling rocks and the like from the overhead, thereby protecting the outer shell of the scraper loader from being damaged by falling rocks. The extended telescopic baffle can protect the cab and prevent the driver from being injured. The scraper loader will not be unable to move due to damage, thereby greatly increasing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a safety protection frame for an underground scraper proposed in the present invention;
[0016] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a safety protection frame for an underground scraper proposed in the present invention;
[0017] Figure 3 This is a cross-sectional view of a safety protection frame for an underground scraper proposed in this utility model. Figure 1 ;
[0018] Figure 4 This is a cross-sectional view of a safety protection frame for an underground scraper proposed in this utility model. Figure 2 .
[0019] In the figure: 1. Mounting rod; 2. Connecting block; 3. Arc support plate; 4. Support rod; 5. Long connecting rod; 6. Semicircular protective plate; 7. Grid frame; 8. Servo motor; 9. Telescopic baffle; 10. Mounting hole; 11. Short connecting rod; 12. Triangular support rod; 13. Threaded nail; 14. Fixing plate; 15. First pulley; 16. Second pulley; 17. Belt; 18. Limit rod; 19. Threaded rod. DETAILED DESCRIPTION
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0021] Reference Figure 1-Figure 4 A safety protection frame for an underground scraper loader includes symmetrically distributed mounting rods 1, the inner wall of the mounting rod 1 is fixedly connected with evenly distributed connecting blocks 2, symmetrically distributed arc support plates 3 are fixedly connected to the outer walls of both ends of the mounting rod 1, evenly distributed support rods 4 are arranged between the opposite inner walls of the arc support plates 3, a long connecting rod 5 is passed through the middle end of the support rod 4, a semicircular protective plate 6 is provided on the outer wall of the arc support plate 3, a grid frame 7 is fixedly connected to the inner wall of the arc support plate 3, a servo motor 8 is provided on the grid frame 7, and the servo motor 8 is connected to a telescopic baffle 9 through a telescopic structure.
[0022] It should be noted that the servo motor 8 is an existing technology, and the specific model and specifications need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not repeated here.
[0023] Furthermore, the connecting block 2 is provided with evenly distributed mounting holes 10 .
[0024] Each connecting block 2 is provided with four mounting holes 10 , and the protective device is connected to the scraper by bolts passing through the mounting holes 10 .
[0025] Furthermore, short connecting rods 11 are symmetrically distributed on both sides of the long connecting rod 5 , and both ends of the short connecting rod 11 are fixedly connected to the outer wall of the support rod 4 .
[0026] The two ends of the long connecting rod 5 are fixedly connected to the outer wall of the mounting rod 1 , and the short connecting rod 11 passes through the supporting rod 4 in the middle and is slidably connected.
[0027] Furthermore, the top connection of the grid frame 7 is fixedly connected with symmetrically distributed triangular support rods 12 , and the top of the triangular support rod 12 is fixedly connected to the bottom end of the outer wall of the middle support rod 4 .
[0028] The triangular support rod 12 and the short connecting rod 11 are located on the same plane, so that the strength of the short connecting rod 11 is increased.
[0029] Furthermore, evenly distributed screw threads 13 are provided on the semicircular protective plate 6 , and the screw threads 13 penetrate the semicircular protective plate 6 and are threadedly connected to the outer wall of the arc support plate 3 .
[0030] Among them, the material of the semicircular protective plate 6 is composed of tempered glass, which has a certain strength and allows the driver to better observe the surrounding situation and expand the field of vision.
[0031] Furthermore, the telescopic structure includes a symmetrically distributed fixed plate 14, a first pulley 15, a second pulley 16, a belt 17, a limit rod 18, and a threaded rod 19. The fixed plate 14 is fixedly connected to the inner wall of the support rod 4, the first pulley 15 is fixedly connected to the output end of the servo motor 8, the second pulley 16 is rotatably connected to the fixed plate 14, and the first pulley 15 is connected to the second pulley 16 through the belt 17.
[0032] Among them, the telescopic structure is achieved by starting the servo motor 8, the servo motor 8 drives the first pulley 15 to rotate, the first pulley 15 drives the second pulley 16 to rotate through the belt 17, the second pulley 16 drives the threaded rod 19 to rotate, and the threaded rod 19 drives the telescopic baffle 9 to extend toward the cab position along the limit rod 18.
[0033] Furthermore, the limiting rod 18 is fixedly connected to the inner wall of the fixed plate 14, the threaded rod 19 is rotatably connected to the inner wall of the fixed plate 14, the second pulley 16 is fixedly connected to the threaded rod 19, the threaded rod 19 is threadedly connected to the telescopic baffle 9, the limiting rod 18 is slidably connected to the telescopic baffle 9, and the telescopic baffle 9 is slidably connected to the fixed plate 14 on one side.
[0034] The telescopic baffle 9 is arranged in an L-shape. The telescopic baffle 9 is extended mainly to block falling rocks without causing damage to the glass cover of the cab, thereby not affecting the field of vision.
[0035] Working principle: When using the protective frame, it is first necessary to open a hole corresponding to the position of the mounting hole 10 on the outer shell of the scraper, and then cover the protective frame as a whole on the scraper, and connect the connecting block 2 to the outer shell of the scraper by bolts. The principle of the protective frame is mainly through the semi-circular arch protective frame composed of the arc support plate 3 and the support rod 4, the long connecting rod 5, and the semi-circular protective plate 6 arranged on both sides of the mounting rod 1, which can greatly prevent the damage to the outer shell of the scraper by falling rocks. When the glass window of the cab is hit by falling rocks, the servo motor 8 can be started, and the servo motor 8 drives the first pulley 15 to rotate. The first pulley 15 drives the second pulley 16 to rotate through the belt 17, and the second pulley 16 drives the threaded rod 19 to rotate. The threaded rod 19 drives the telescopic baffle 9 to extend along the limit rod 18 toward the cab position to block the gravel falling from above, thereby protecting the outer shell of the scraper from being damaged by falling rocks. The extended telescopic baffle 9 can protect the cab and prevent the driver from being injured. Therefore, the scraper will not be unable to move due to damage, which greatly increases work efficiency.
[0036] 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 safety protection frame for an underground scraper, comprising symmetrically distributed mounting rods (1), characterized in that: The inner wall of the installation rod (1) is fixedly connected with a connection block (2) that is evenly distributed; the outer walls of both ends of the installation rod (1) are fixedly connected with symmetrically distributed arc support plates (3); support rods (4) that are evenly distributed are arranged between the inner walls opposite to each other of the arc support plates (3); a long connection rod (5) is connected through the middle end of the support rod (4); a semicircular protective plate (6) is arranged on the outer wall of the arc support plate (3); a grid frame (7) is fixedly connected to the inner wall of the arc support plate (3); a servo motor (8) is arranged on the grid frame (7); and the servo motor (8) is connected to a telescopic baffle (9) through a telescopic structure.
2. The underground scraper safety protection frame according to claim 1, characterized in that: The connecting block (2) is provided with evenly distributed mounting holes (10).
3. The underground scraper safety protection frame according to claim 1, characterized in that: Short connecting rods (11) are symmetrically distributed on both sides of the long connecting rod (5), and both ends of the short connecting rod (11) are fixedly connected to the outer wall of the support rod (4).
4. The underground scraper safety protection frame according to claim 1, characterized in that: The top connection of the grid frame (7) is fixedly connected to symmetrically distributed triangular support rods (12), and the top of the triangular support rod (12) is fixedly connected to the bottom end of the outer wall of the middle support rod (4).
5. The underground scraper safety protection frame according to claim 1, characterized in that: The semicircular protective plate (6) is provided with evenly distributed screw threads (13), which penetrate the semicircular protective plate (6) and are threadedly connected to the outer wall of the arc support plate (3).
6. The underground scraper safety protection frame according to claim 1, characterized in that: The telescopic structure comprises a symmetrically distributed fixed plate (14), a first pulley (15), a second pulley (16), a belt (17), a limiting rod (18), and a threaded rod (19); the fixed plate (14) is fixedly connected to the inner wall of the support rod (4); the first pulley (15) is fixedly connected to the output end of the servo motor (8); the second pulley (16) is rotatably connected to the fixed plate (14); and the first pulley (15) is connected to the second pulley (16) via the belt (17).
7. The underground scraper safety protection frame according to claim 6, characterized in that: The limiting rod (18) is fixedly connected to the inner wall of the fixed plate (14), the threaded rod (19) is rotatably connected to the inner wall of the fixed plate (14), the second pulley (16) is fixedly connected to the threaded rod (19), the threaded rod (19) is threadedly connected to the telescopic baffle (9), the limiting rod (18) is slidably connected to the telescopic baffle (9), and the telescopic baffle (9) is slidably connected to the fixed plate (14) on one side.