An ultra-thin temporary support for a roof bolter

Abstract

The application discloses a kind of ultra-thin temporary support for excavator, it is related to the field of low roadway support in coal mine, it includes main frame body, temporary support top frame and original temporary support top frame, the main frame body is equipped with support mechanism, the support mechanism includes the front telescopic support frame of being arranged on main frame body, left telescopic support frame and right telescopic support frame.The application is replaced by oil cylinder and shear type adjusting mechanism with original left and right telescopic mechanism, is connected in the both sides of main frame body, left and right telescopic support frame is pushed adjusting mechanism by oil cylinder, so that support frame can change width according to the actual shape of roadway top, and then more closely with roadway top, the support effect of roadway is better, the application not only can timely constrain and control surrounding rock deformation, and connecting structure is simple, high strength, good stability, easy to disassemble, easy to replace after damage, less space occupation, little influence to construction, facilitate mechanized construction of excavator in low roadway.

Description

Technical Field

[0001] This application relates to the field of support for low-lying roadways in coal mines, and in particular to an ultra-thin temporary support for roadheaders. Background Technology

[0002] A roadheader is a type of mechanical equipment used in mining, tunneling, and underground engineering. It is typically used for tunneling and reinforcing tunnels or mining faces. Temporary support using roadheaders is mainly used to quickly support the roof area during coal mine roadway excavation, ensuring operational safety and improving excavation efficiency.

[0003] The existing support frame, whether it is a hinged flipping structure or a hydraulic cylinder translation and extension, occupies a large amount of space and height. Moreover, the size of the flipping side support directly affects the flipping radius. A larger flipping radius makes it difficult to retract, while a smaller one affects the support area. In addition, the separate hydraulic cylinder translation operation on both sides increases the height of the main frame, resulting in an overall increase in height. This makes it inconvenient to deploy support in low-lying tunnels. Therefore, an ultra-thin temporary support for roadheaders is proposed. Utility Model Content

[0004] In order to meet the support requirements of low roadways in coal mines, and to provide an ultra-thin temporary support for roadway anchor machines that is assembled and installed after being lowered into the mine, with good adaptability to the transverse roof of the roadway and effectively improves the efficiency and safety of the roadway anchor machine, this application provides an ultra-thin temporary support for roadway anchor machines.

[0005] The present application provides an ultra-thin temporary support for a roadheader, which adopts the following technical solution: an ultra-thin temporary support for a roadheader, comprising a main frame, a temporary support top frame and an original temporary support top frame, wherein a support mechanism is provided on the main frame;

[0006] The support mechanism includes a front telescopic support frame, a left telescopic support frame, and a right telescopic support frame installed on the main frame. The temporary support top frame and the original temporary support top frame are each equipped with a corresponding swing cylinder. The main frame is fixedly installed to the telescopic end of the swing cylinder. Two cylinders are symmetrically arranged inside the main frame. The output end of each cylinder is connected to a corresponding scissor-type adjustment mechanism. The left telescopic support frame and the right telescopic support frame are both connected to the telescopic end of the cylinder inside the main frame through the corresponding scissor-type adjustment mechanism.

[0007] By adopting the above technical solution, the temporary support top frame is installed on the swing cylinder of the temporary support device, the left telescopic support frame is installed on the left side of the main frame, and is fixed by the cylinder, fixed pin and roller. The opening and closing of the support frame is realized by the extension and retraction of the cylinder to push the scissor adjustment structure. The right telescopic support frame is the same.

[0008] The front telescopic support frame is inserted into the main frame and fixed by the corresponding hydraulic cylinder and fixing pin. The front telescopic support frame extends forward and retracts by the extension and retraction of the hydraulic cylinder connected to the front telescopic support frame. This application divides the temporary support frame into several parts, making the parts smaller and facilitating the disassembly and assembly in low underground roadways, thus meeting the usage requirements of coal mine tunneling and anchoring machines.

[0009] Preferably, the scissor-type adjustment mechanism consists of a corresponding left telescopic support frame, a right telescopic support frame, a scissor frame body, a fixed pin, and rollers, with the fixed pin and rollers mounted on the external scissor frame body.

[0010] By adopting the above technical solution, the left telescopic support frame and the right telescopic support frame can be moved through the scissor-type adjustment mechanism.

[0011] Preferably, a fixing bracket is fixedly installed at the bottom fixed end of the cylinder, and two bolts are symmetrically screwed onto the fixing bracket.

[0012] By adopting the above technical solution and setting up a fixing frame, an auxiliary installation function can be achieved.

[0013] Preferably, the left telescopic support frame and the right telescopic support frame are used to lift the temporary support top frame in parallel by a combination of hydraulic cylinders and scissor-type adjustment mechanisms.

[0014] By adopting the above technical solution, the temporary support frame is lifted in parallel by the combination of the left and right telescopic support frames and the hydraulic cylinder and scissor adjustment mechanism, which can play an auxiliary role in the installation.

[0015] Preferably, a housing is fixedly installed on the outer surface of the fixed end of the hydraulic cylinder, and an installation port is provided on the housing, with a pressure sensor for monitoring the hydraulic cylinder installed inside the installation port.

[0016] By adopting the above technical solution, pressure fluctuations in the hydraulic system of the oil cylinder can be monitored through pressure sensors, and alarms can be triggered in a timely manner, thus further improving the safety and stability during use.

[0017] Preferably, the interior of the housing is hollowed out, and the pressure sensor is located inside it.

[0018] By adopting the above technical solution, the inside of the housing is hollowed out, and the pressure sensor is located inside, which can play an auxiliary role in installation.

[0019] Preferably, the housing is provided with two positioning plates, and each of the two positioning plates has a corresponding threaded rod fixedly installed at one end that is far apart from each other. One end of each of the two threaded rods passes through and is screwed to the corresponding side of the housing, and is exposed outside. The exposed end of each of the two threaded rods is fixedly installed with a corresponding knob.

[0020] By adopting the above technical solution, rotating the knob will cause the threaded rod to rotate. The threaded rod is threaded through to the side of the housing, so that the positioning plate will move while rotating, and the pressure sensor can be positioned and installed. Conversely, the pressure sensor can be disassembled.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. This application utilizes a main frame and other components, employing hydraulic cylinders and scissor-type adjustment mechanisms instead of the original left and right telescopic mechanisms, connected to both sides of the main frame. The left and right telescopic support frames are adjusted by hydraulic cylinders, allowing the support frames to change their width according to the actual shape of the roadway top, thus achieving a closer fit to the roadway top and providing better support for the roadway. This application not only effectively constrains and controls surrounding rock deformation but also features a simple connection structure, high strength, good stability, easy disassembly, easy replacement after damage, minimal space occupation, and minimal impact on construction, facilitating mechanized construction of tunneling and anchoring machines in low-lying roadways.

[0023] 2. This application utilizes the cooperation of the housing and other components. By rotating a knob, the knob rotates and drives the threaded rod to rotate. The threaded rod is threaded through to the side of the housing, thereby moving the positioning plate during rotation. This allows for the positioning and installation of the pressure sensor, and conversely, it allows for the removal of the pressure sensor. The pressure sensor can monitor pressure fluctuations in the hydraulic system of the oil cylinder and issue timely alarms, thus further improving the safety and stability during use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an ultra-thin temporary support for a roadheader according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram illustrating the improved temporary support frame structure, which is the main feature of this application.

[0026] Figure 3 This is a schematic diagram illustrating the comparison between the temporary support frame and the original temporary support frame in the embodiments of this application;

[0027] Figure 4 This is a schematic diagram illustrating the main installation structure of the embodiments of this application;

[0028] Figure 5 This is a partial unfolded schematic diagram illustrating the main installation structure in the embodiments of this application;

[0029] Figure 6 This is a schematic diagram illustrating the positioning portion of the installation structure, which is the main feature of this application embodiment.

[0030] Reference numerals in the attached diagram: 1. Left telescopic support frame; 2. Front telescopic support frame; 3. Main frame; 4. Right telescopic support frame; 5. Fixed pin; 6. Scissor-type adjustment mechanism; 7. Hydraulic cylinder; 8. Roller; 9. Temporary support top frame; 10. Swinging hydraulic cylinder; 11. Original temporary support top frame; 12. Fixed frame; 13. Bolt; 14. Housing; 15. Mounting port; 16. Pressure sensor; 17. Knob; 18. Threaded rod; 19. Positioning plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0032] This application discloses an ultra-thin temporary support for a roadheader.

[0033] Reference Figure 1-3 An ultra-thin temporary support for a tunneling and anchoring machine includes a main frame 3, a temporary support top frame 9 and an original temporary support top frame 11, a support mechanism installed on the main frame 3, and an installation mechanism installed on the support mechanism.

[0034] The support mechanism includes a front telescopic support frame 2, a left telescopic support frame 1 and a right telescopic support frame 4 installed on the main frame 3, a temporary support top frame 9 and the original temporary support top frame 11, each equipped with a corresponding swing cylinder 10. The main frame 3 is fixedly installed with the telescopic ends of the swing cylinder 10. Two cylinders 7 are symmetrically arranged inside the main frame 3. The output ends of the cylinders 7 are connected to corresponding scissor-type adjustment mechanisms 6. The left telescopic support frame 1 and the right telescopic support frame 4 are connected to the telescopic ends of the cylinders 7 inside the main frame 3 through the corresponding scissor-type adjustment mechanisms 6.

[0035] The scissor-type adjustment mechanism 6 consists of a corresponding left telescopic support frame 1, a right telescopic support frame 4, a scissor frame, a fixed pin 5, and a roller 8. The fixed pin 5 and the roller 8 are installed on the external scissor frame.

[0036] In use, the temporary support top frame 9 is installed on the swing cylinder 10 of the temporary support device, and the left telescopic support frame 1 is installed on the left side of the main frame 3. It is fixed by the cylinder 7, the fixed pin 5, and the roller 8. The opening and closing of the support frame is realized by the extension and retraction of the cylinder 7 to push the scissor adjustment structure 6. The right telescopic support frame is the same.

[0037] The front telescopic support frame 2 is inserted into the main frame 3 and fixed by the corresponding hydraulic cylinder 7 and the fixing pin 5. The front telescopic support frame 2 is extended and retracted by the extension and retraction of the hydraulic cylinder 7 connected to the front telescopic support frame 2. This application divides the temporary support frame into 4 parts, making the parts smaller, which is convenient for disassembly and assembly in low underground roadways and meets the usage requirements of coal mine tunneling and anchoring machines.

[0038] Reference Figure 4 The installation mechanism includes a fixed frame 12 fixedly installed at the bottom of the hydraulic cylinder 7. Two bolts 13 are symmetrically screwed onto the fixed frame 12. The left telescopic support frame 1 and the right telescopic support frame 4 are lifted parallel to each other by the combination of the hydraulic cylinder 7 and the scissor-type adjustment mechanism 6.

[0039] In use, the fixing bracket 12 can be positioned and installed by rotating the bolt 13, thus the hydraulic cylinder 7 can be positioned and installed.

[0040] Reference Figure 5-6 The installation mechanism also includes a housing 14 fixedly installed on the outer surface of the fixed end of the hydraulic cylinder 7. The housing 14 has an installation port 15, and a pressure sensor 16 for monitoring the hydraulic cylinder 7 is provided inside the installation port 15. The interior of the housing 14 is hollowed out, and the pressure sensor 16 is located inside. Two positioning plates 19 are provided inside the housing 14. A corresponding threaded rod 18 is fixedly installed at the ends of the two positioning plates 19 that are far apart from each other. One end of each threaded rod 18 passes through and is screwed to the corresponding side of the housing 14 and is exposed outside. A corresponding knob 17 is fixedly installed at the exposed end of each threaded rod 18.

[0041] In use, by rotating the knob 17, the rotation of the knob 17 will drive the threaded rod 18 to rotate. The threaded rod 18 is threaded through to the side of the housing 14, so that the positioning plate 19 will move while rotating, and the pressure sensor 16 can be positioned and installed. Conversely, the pressure sensor 16 can be disassembled. The pressure sensor 16 can monitor the pressure fluctuation of the hydraulic system of the oil cylinder 7 and issue an alarm in time, thus further improving the safety and stability during use.

[0042] The main frame 3 is mounted on the swing cylinder 10 by external bolts and washers; the front telescopic support frame 2 is connected to the main frame 3 by the corresponding internal cylinder 7 and fixed by the fixing pin 5.

[0043] Furthermore, the front telescopic support frame 2 inside the main frame 3 is fixed by 4 fixed pins 5 and 2 hydraulic cylinders 7.

[0044] Furthermore, the left and right telescopic support frames on both sides of the main frame 3 are fixed by two hydraulic cylinders 7, an adjustment mechanism 6, and a fixing pin 5.

[0045] The temporary support frame 9 in this application includes a main frame 3, a front telescopic support frame 2, a left telescopic support frame 1, and a right telescopic support frame 4. The front telescopic support frame 2 includes two hydraulic cylinders 7 and a telescopic frame, located in front of the main frame. The left and right telescopic support frames each include two hydraulic cylinders 7 and a telescopic adjustment mechanism, located on both sides of the main frame. The two hydraulic cylinders 7 connected to the front telescopic support frame 2 in this application are existing independently used hydraulic cylinders, and therefore are not described in detail in this application.

[0046] The implementation principle of an ultra-thin temporary support for a tunneling and anchoring machine according to an embodiment of this application is as follows: When in use, the temporary support top frame 9 is installed on the swing cylinder 10 of the temporary support device, and the left telescopic support frame 1 is installed on the left side of the main frame 3. It is fixed by the cylinder 7, the fixed pin 5, and the roller 8. The opening and closing of the support frame is realized by the extension and retraction of the cylinder 7 to push the scissor adjustment structure 6. The same applies to the right telescopic support frame.

[0047] The front telescopic support frame 2 is inserted into the main frame 3 and fixed by the corresponding hydraulic cylinder 7 and the fixing pin 5. The front telescopic support frame 2 is extended and retracted by the extension and retraction of the hydraulic cylinder 7 connected to the front telescopic support frame 2. This application divides the temporary support frame into 4 parts, making the parts smaller, which is convenient for disassembly and assembly in low underground roadways and meets the usage requirements of coal mine tunneling and anchoring machines.

[0048] In this application example, the overall structural height of the temporary support roof 9 is significantly reduced compared with the original temporary support roof 11, ensuring good passage of the tunneling and anchoring machine when working in low tunnels, and at the same time, it is not easy for the roof to interfere during roof construction operations.

[0049] In this application example, the left and right telescopic mechanisms are subjected to force, the hydraulic cylinder 7 pushes and pulls force F1, the scissor adjustment mechanism 6 forms an angle α° and a total force F during the movement, and the lateral push and pull force F2 changes according to the angle of the scissor adjustment mechanism. The force is greatest when the angle is the largest. Therefore, the roller 8, the fixed pin 5, the scissor adjustment mechanism 6 and other parts have enhanced surface wear resistance.

[0050] By rotating knob 17, the rotation of knob 17 will drive threaded rod 18 to rotate. Threaded rod 18 is threaded through to the side of housing 14, thus moving positioning plate 19 during rotation. This allows for the positioning and installation of pressure sensor 16, and vice versa, the pressure sensor 16 can be disassembled. Pressure sensor 16 can monitor pressure fluctuations in the hydraulic system of cylinder 7 and issue timely alarms, thereby further improving safety and stability during use.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A thin-film temporary support for a tunneling and anchoring machine, comprising a main frame (3), a temporary support top frame (9) and an original temporary support top frame (11), wherein the main frame (3) is provided with a support mechanism; The support mechanism includes a front telescopic support frame (2), a left telescopic support frame (1) and a right telescopic support frame (4) set on the main frame (3). The temporary support top frame (9) and the original temporary support top frame (11) are each equipped with a corresponding swing cylinder (10). The main frame (3) is fixedly installed with the telescopic end of the swing cylinder (10). Two cylinders (7) are symmetrically arranged inside the main frame (3). The output end of each cylinder (7) is connected to a corresponding scissor adjustment mechanism (6). The left telescopic support frame (1) and the right telescopic support frame (4) are connected to the telescopic end of the cylinder (7) inside the main frame (3) through the corresponding scissor adjustment mechanism (6).

2. The ultra-thin temporary support for a roadheader according to claim 1, characterized in that: The scissor-type adjustment mechanism (6) consists of a corresponding left telescopic support frame (1), a right telescopic support frame (4), a scissor frame, a fixed pin (5), and a roller (8). The fixed pin (5) and the roller (8) are installed on the external scissor frame.

3. The ultra-thin temporary support for a roadheader according to claim 1, characterized in that: The bottom fixed end of the oil cylinder (7) is fixedly installed with a fixing bracket (12), and two bolts (13) are symmetrically screwed onto the fixing bracket (12).

4. The ultra-thin temporary support for a roadheader according to claim 1, characterized in that: The left telescopic support frame (1) and the right telescopic support frame (4) are used to lift the temporary support top frame (9) in parallel by the combination of the oil cylinder (7) and the scissor adjustment mechanism (6).

5. The ultra-thin temporary support for a roadheader according to claim 1, characterized in that: A housing (14) is fixedly installed on the outer surface of the fixed end of the oil cylinder (7). An installation port (15) is provided on the housing (14), and a pressure sensor (16) for monitoring the oil cylinder (7) is provided in the installation port (15).

6. The ultra-thin temporary support for a roadheader according to claim 5, characterized in that: The housing (14) is hollowed out, and the pressure sensor (16) is located inside it.

7. The ultra-thin temporary support for a roadheader according to claim 6, characterized in that: The housing (14) is provided with two positioning plates (19). The ends of the two positioning plates (19) that are far apart from each other are fixedly installed with corresponding threaded rods (18). One end of each of the two threaded rods (18) passes through and is screwed to the corresponding side of the housing (14) and is exposed outside. The exposed ends of the two threaded rods (18) are fixedly installed with corresponding knobs (17).

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