Onboard supporting mechanism of heading machine

Abstract

The utility model belongs to the technical field of temporary supporting equipment, and particularly relates to a heading machine onboard supporting mechanism which comprises a large arm, a middle arm, a small arm and a supporting frame, the middle arm is in sliding connection with the inner wall of the large arm, the small arm is in sliding connection with the inner wall of the middle arm, and the supporting frame is installed at the end of the small arm. Due to the arrangement of the first anti-sideslip assembly and the second anti-sideslip assembly, the stable connection between the first sealing plate and the middle arm and the stable connection between the second sealing plate and the large arm are achieved, and the sealing plates are effectively prevented from laterally sliding in the supporting work process; due to the multi-layer anti-sideslip design, the connection stability of all parts of the supporting mechanism is greatly improved, the accurate position and posture of the supporting frame can be kept in the working process, reliable supporting guarantee is provided for tunneling work, and the safety accident risk caused by instability of the supporting structure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of temporary support equipment technology, and in particular to a tunneling machine onboard support mechanism. Background Technology

[0002] In coal mine tunneling operations, after the tunneling machine completes processes such as rock breaking and loading, it is necessary to promptly provide temporary support for the newly exposed roof to prevent roof collapse and ensure the safety of workers.

[0003] Chinese Patent Publication No. CN115653657A discloses "A Rear-mounted Temporary Support Device for a Tunneling Machine". Its technical solution includes a boom, a first telescopic cylinder installed on the inner side of the left end of the boom, a middle arm installed inside the boom and connected to the telescopic end of the first telescopic cylinder, a second telescopic cylinder installed on the inner side of the left end of the middle arm, and a forearm installed inside the middle arm and connected to the telescopic end of the second telescopic cylinder.

[0004] The tunneling machine uses a rear-mounted onboard temporary support device. By installing and fixing it to the main frame of the tunneling machine from the rear, the temporary support device is less prone to shaking during cutting and the support area is increased. With the design of the telescopic boom, middle boom and forearm, the working range can be adjusted, further enhancing the stability of the connection between the temporary support device and the tunneling machine. The rotating mechanism facilitates the adjustment of the support angle.

[0005] However, the telescopic cylinder may be damaged during use. This device lacks consideration for quick repair after damage. Therefore, it is difficult to carry out quick repair work once the whole thing fails, causing inconvenience in use. To address this, we provide a tunneling machine onboard support mechanism. Utility Model Content

[0006] To address the aforementioned problems, this utility model proposes an onboard support mechanism for a tunneling machine, which more accurately solves the problems mentioned in the background art.

[0007] This utility model is achieved through the following technical solution:

[0008] The utility model proposes a machine-mounted support mechanism for a tunneling machine, including a boom, a middle boom, a forearm, and a support frame. The middle boom is slidably connected to the inner wall of the boom, and the forearm is slidably connected to the inner wall of the middle boom. The support frame is installed at the end of the forearm. Telescopic cylinders are fixedly installed on the inner end walls of both the boom and the middle boom. A sealing plate one and a sealing plate two are respectively provided on the upper end surfaces of the boom and the middle boom. A limit mechanism is installed on the lower end surface of the boom.

[0009] An anti-slip assembly is connected between the middle arm and the sealing plate.

[0010] An anti-slip component two is connected between the boom and the sealing plate two.

[0011] The limiting mechanism includes a hollow frame fixedly connected to the lower end surface of the boom. Both ends of the hollow frame are fitted with plug rods, and the ends of the plug rods are fixedly connected with L-shaped limiting plates to limit the upward displacement of the sealing plate two.

[0012] A reciprocating component connects the hollow frame and the plug-in rod.

[0013] Furthermore, the reciprocating component includes strip-shaped through grooves formed on both sides of the hollow frame. A horizontal fixing rod is fixedly connected between the two end walls of the strip-shaped through groove. A spring is sleeved around the horizontal fixing rod, and the movable sleeve blocks are slidably connected at the inner wall of the strip-shaped through groove. An overlapping plate is fixedly connected between the two movable sleeve blocks.

[0014] Furthermore, the anti-skid assembly includes a limiting post fixedly connected to the lower end surface of the sealing plate and a limiting hole opened on the upper port surface of the middle arm, with the limiting post inserted into the inner wall of the limiting hole.

[0015] Furthermore, the anti-skid assembly 2 includes a limiting plate fixedly connected to the lower end surface of the sealing plate 2 and a limiting slot opened on the upper port surface of the boom, with the limiting plate inserted into the inner wall of the limiting slot.

[0016] Furthermore, a movable sleeve block is slidably sleeved around the periphery of the horizontal fixing rod, and the surface of the overlapping plate is fixedly connected to the end of the plug rod.

[0017] Furthermore, one end of the spring is fixedly connected to the end wall of the strip groove, and the other end of the spring is fixedly connected to one end surface of the movable sleeve block.

[0018] The beneficial effects of this utility model are:

[0019] This utility model, through the setting of anti-side-slip component one and anti-side-slip component two, respectively achieves a stable connection between the first sealing plate and the middle arm, and between the second sealing plate and the main arm, effectively preventing the sealing plate from sliding laterally during the support operation. This multi-layered anti-side-slip design greatly improves the connection stability between the various components of the support mechanism, enabling the support frame to maintain an accurate position and posture during operation, providing reliable support for tunneling work, and reducing the risk of safety accidents caused by unstable support structures.

[0020] This invention employs a clever design incorporating a strip-shaped through groove, a horizontal fixing rod, a spring, and a movable sleeve block, enabling the insertion rod to reciprocate. The elasticity of the spring provides power to the movable sleeve block, allowing it to slide smoothly within the strip-shaped through groove, thereby driving the insertion rod and the L-shaped limiting plate to move. This flexible transmission method allows the limiting mechanism to respond quickly to actual needs, adapting to different working conditions and support requirements. Simultaneously, the simple and reasonable coordination between components reduces friction and resistance during movement, improving the service life of the components. Attached Figure Description

[0021] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of sealing plate one, sealing plate two, upper arm and middle arm in one embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure between the upper arm and the limiting mechanism in one embodiment of the present invention;

[0024] Figure 4 This is one embodiment of the present utility model. Figure 3 Enlarged view of the structure at point A in the middle.

[0025] In the diagram: 1. Boom; 2. Mid-arm; 3. Arm; 4. Support frame; 5. Telescopic cylinder; 6. Sealing plate one; 7. Sealing plate two; 8. Limiting insert; 9. Limiting insertion hole; 10. Limiting insert plate; 11. Limiting slot; 12. Hollow frame; 13. Insert rod; 14. L-shaped limiting plate; 15. Strip through groove; 16. Horizontal support rod; 17. Spring; 18. Moving sleeve block; 19. Overlap plate. Detailed Implementation

[0026] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0027] Example

[0028] like Figures 1-4As shown, one embodiment of this utility model proposes a tunneling machine onboard support mechanism, comprising main components such as a boom 1, a middle boom 2, a forearm 3, and a support frame 4. The middle boom 2 is installed on the inner wall of the boom 1, and a suitable sliding connection structure, such as a slide rail and slider, achieves the sliding connection of the middle boom 2 to the inner wall of the boom 1. Similarly, the forearm 3 is installed on the inner wall of the middle boom 2, also using a similar sliding connection structure. The support frame 4 is installed at the end of the forearm 3, ensuring a secure installation, which can be achieved through welding, bolting, or other methods. Telescopic cylinders 5 are fixedly installed on the inner end walls of the boom 1 and the middle boom 2, respectively, using bolts or other fasteners to firmly fix the telescopic cylinders 5 to the inner end walls of the boom 1 and the middle boom 2, ensuring the stability of the telescopic cylinders 5 during operation. A sealing plate 6 is installed on the upper end surface of the boom 1, and a sealing plate 6 is installed on the upper end of the middle boom 2. A sealing plate 7 is installed on the surface of the opening. The sealing plate 6 and the sealing plate 7 can be fixed to the upper surface of the upper arm 1 and the middle arm 2 respectively by welding or bolting. A hollow frame 12 is fixedly connected to the lower surface of the upper arm 1 to ensure that the hollow frame 12 is firmly connected to the upper arm 1. Insertion rods 13 are inserted at both ends of the hollow frame 12. An L-shaped limiting plate 14 is fixedly connected to the end of the insertion rod 13. The L-shaped limiting plate 14 is used to limit the upward displacement of the sealing plate 7. A reciprocating component is connected between the hollow frame 12 and the insertion rods 13.

[0029] Furthermore, strip-shaped grooves 15 are respectively opened on both sides of the hollow frame 12. The size of the strip-shaped grooves 15 is designed according to the size of the movable sleeve 18 and the requirements of reciprocating motion, ensuring that the movable sleeve 18 can slide smoothly within the strip-shaped grooves 15. A horizontal fixing rod 16 is fixedly connected between the two end walls of the strip-shaped groove 15. The diameter of the horizontal fixing rod 16 matches the inner diameter of the movable sleeve 18, ensuring that the movable sleeve 18 can slide smoothly around the horizontal fixing rod 16. A spring 17 is sleeved around the horizontal fixing rod 16. One end of the spring 17 is fixedly connected to the end wall of the strip-shaped groove 15, which can be fixed by welding or snap-fit. The other end of the spring 17 is fixedly connected to one end surface of the movable sleeve 18, also using the same method. Ensure the stable connection between spring 17 and movable sleeve 18 using a suitable fixing method; slide movable sleeve 18 on the inner wall of strip groove 15 to ensure that movable sleeve 18 can slide freely along strip groove 15; fix overlapping plate 19 between two movable sleeves 18, the surface of overlapping plate 19 is fixedly connected to the end of plug rod 13, and the movement of movable sleeve 18 is transmitted to plug rod 13 through overlapping plate 19 to realize the reciprocating movement of plug rod 13; after the reciprocating component is installed, spring 17 drives plug rod 13 to realize reciprocating movement through movable sleeve 18 and overlapping plate 19, providing power support for the subsequent limiting function of L-shaped limiting plate 14 on sealing plate 2 7, and ensuring that the limiting mechanism can work normally.

[0030] Furthermore, a limiting pin 8 is fixedly connected to the lower end surface of the sealing plate 6. The limiting pin 8 can be firmly installed on the lower end surface of the sealing plate 6 by welding or bolting to ensure the accurate positioning of the limiting pin 8. A limiting hole 9 is opened on the upper end surface of the middle arm 2. The size of the limiting hole 9 matches the size of the limiting pin 8 to ensure that the limiting pin 8 can be smoothly inserted into the inner wall of the limiting hole 9. The limiting pin 8 is inserted into the inner wall of the limiting hole 9. Through the cooperation between the limiting pin 8 and the limiting hole 9, the anti-side-slip connection between the sealing plate 6 and the middle arm 2 is realized. After the anti-side-slip component is installed, the cooperation between the limiting pin 8 and the limiting hole 9 can effectively prevent the sealing plate 6 from sliding laterally relative to the middle arm 2, ensuring the connection stability between the middle arm 2 and the sealing plate 6 and improving the working reliability of the support mechanism.

[0031] Furthermore, a limiting insert 10 is fixedly connected to the lower end surface of the second sealing plate 7. The limiting insert 10 is firmly installed on the lower end surface of the second sealing plate 7 by welding or bolting to ensure accurate installation of the limiting insert 10. A limiting slot 11 is opened on the upper end surface of the boom 1. The size of the limiting slot 11 matches the size of the limiting insert 10 to ensure that the limiting insert 10 can be smoothly inserted into the inner wall of the limiting slot 11. The limiting insert 10 is inserted into the inner wall of the limiting slot 11. Through the cooperation between the limiting insert 10 and the limiting slot 11, the anti-side-slip connection between the second sealing plate 7 and the boom 1 is realized. After the second anti-side-slip component is installed, the cooperation between the limiting insert 10 and the limiting slot 11 can effectively prevent the second sealing plate 7 from sliding laterally relative to the boom 1, ensuring the connection stability between the boom 1 and the second sealing plate 7, and further improving the overall stability of the support mechanism.

[0032] Furthermore, the outer periphery of the horizontal support rod 16 is slidably fitted with the movable sleeve block 18, ensuring that the movable sleeve block 18 can slide freely on the outer periphery of the horizontal support rod 16, while also ensuring that the movable sleeve block 18 can slide smoothly within the strip groove 15; an overlapping plate 19 is fixedly connected between the two movable sleeve blocks 18, and the surface of the overlapping plate 19 is fixedly connected to the end of the plug rod 13 by welding or bolting, ensuring that the connection between the overlapping plate 19 and the plug rod 13 is firm, and that the movement of the movable sleeve block 18 can be accurately transmitted to the plug rod 13; the sliding fit between the movable sleeve block 18 and the horizontal support rod 16 and the connection between the overlapping plate 19 and the plug rod 13 enable the reciprocating component to work normally, drive the plug rod 13 to achieve reciprocating motion, thereby realizing the limiting function of the L-shaped limiting plate 14 on the sealing plate 7, and ensuring the coordinated work between the components of the support mechanism.

[0033] Furthermore, one end of the spring 17 is fixedly connected to the end wall of the strip groove 15 by welding or snap-fitting to ensure that one end of the spring 17 is firmly fixed and will not loosen during movement; the other end of the spring 17 is fixedly connected to one end surface of the movable sleeve 18 by welding or snap-fitting to ensure a stable connection between the spring 17 and the movable sleeve 18, so that the spring 17 can normally exert its elastic function and push the movable sleeve 18 to reciprocate within the strip groove 15; the two ends of the spring 17 are respectively fixed to the end wall of the strip groove 15 and one end surface of the movable sleeve 18. When the spring 17 is subjected to external force, it can generate elastic deformation and push the movable sleeve 18 to move, realizing the reciprocating motion function of the reciprocating component, providing power for the limiting mechanism, and ensuring the normal realization of the limiting function of the support mechanism.

[0034] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A machine-mounted support mechanism of a heading machine, comprising a large arm (1), a middle arm (2), a small arm (3) and a support frame (4), the middle arm (2) being slidingly connected at an inner wall of the large arm (1), the small arm (3) being slidingly connected at an inner wall of the middle arm (2), and the support frame (4) being installed at an end of the small arm (3), characterized in that, The inner end wall of the big arm (1) and the middle arm (2) is fixedly installed with a telescopic air cylinder (5), the upper end surface of the big arm (1) and the middle arm (2) is respectively provided with a sealing plate one (6) and a sealing plate two (7), and the lower end surface of the big arm (1) is installed with a limiting mechanism; The middle arm (2) and the sealing plate one (6) are connected with a side-slip prevention assembly one; The big arm (1) and the sealing plate two (7) are connected with a side-slip prevention assembly two; The limiting mechanism comprises a hollow frame (12) fixedly connected to the lower end surface of the big arm (1), both ends of the hollow frame (12) are inserted with a plug-in rod (13), and the end of the plug-in rod (13) is fixedly connected with an L-shaped limiting plate (14) for limiting the upward displacement of the sealing plate two (7); The hollow frame (12) and the plug-in rod (13) are connected with a reciprocating component.

2. A machine-mounted support mechanism for a heading machine according to claim 1, characterized in that The reciprocating component comprises a strip-shaped through slot (15) formed in the two side surfaces of the hollow frame (12), the two end walls of the strip-shaped through slot (15) are fixedly connected with a horizontal fixing rod (16), the horizontal fixing rod (16) is peripherally sleeved with a spring (17), and a moving sleeve block (18) is slidingly connected to the inner wall of the strip-shaped through slot (15), and the two moving sleeve blocks (18) are fixedly connected with a lap plate (19) therebetween.

3. The machine-mounted support mechanism according to claim 1, characterized in that, The side-slip prevention assembly one comprises a limiting plug-in column (8) fixedly connected to the lower end surface of the sealing plate one (6) and a limiting plug-in hole (9) formed in the upper end surface of the middle arm (2), and the limiting plug-in column (8) is inserted into the inner wall of the limiting plug-in hole (9).

4. The machine-mounted support mechanism according to claim 1, characterized in that, The side-slip prevention assembly two comprises a limiting plug-in plate (10) fixedly connected to the lower end surface of the sealing plate two (7) and a limiting plug-in slot (11) formed in the upper end surface of the big arm (1), and the limiting plug-in plate (10) is inserted into the inner wall of the limiting plug-in slot (11).

5. The machine-mounted support mechanism according to claim 2, characterized in that, The outer periphery of the horizontal fixing rod (16) is slidingly sleeved with the moving sleeve block (18), and the surface of the lap plate (19) is fixedly connected with the end of the plug-in rod (13).

6. The machine-mounted support mechanism according to claim 2, wherein One end of the spring (17) is fixedly connected to the end wall of the strip-shaped through slot (15), and the other end of the spring (17) is fixedly connected to one end surface of the moving sleeve block (18).

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