Compound support device of coal mine rescue drilling machine
By connecting the struts and fasteners of the composite support device, the problem of the rescue drilling rig detaching from the support under high torque was solved, thus achieving stable operation and safe construction of the rescue drilling rig.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY CONSTR HEAVY IND
- Filing Date
- 2025-08-28
- Publication Date
- 2026-06-19
AI Technical Summary
When existing rescue drilling rigs are excavating rescue channels, the single support method causes them to detach from the support due to excessive torque during the process, affecting construction safety.
A composite support device is adopted, including struts and fasteners. The rescue drilling rig is fixed to the ground by connecting the fasteners with fastener holes. The struts and connecting seats provide a supporting effect, and the preload of the struts resists torque and thrust, preventing detachment.
This ensured the stable operation of the rescue drilling rig under high torque and thrust, preventing equipment swaying and ensuring the stability and safety of the rescue channel.
Smart Images
Figure CN224379773U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal mine roadway construction technology, specifically to a composite support device for a coal mine rescue drilling rig. Background Technology
[0002] During coal mine tunnel excavation, construction accidents such as mine collapses occur frequently. After an accident, it is crucial to quickly establish a rescue passage. Currently, the mainstream rescue method relies mainly on general-purpose mechanical excavation, which is inefficient and time-consuming. Rescue drilling rigs, as specialized rescue equipment, offer high efficiency and quick results in establishing rescue passages. To improve drilling efficiency, increasing the drilling torque and thrust of the rescue drilling rig is the most effective method. With increased drilling torque and thrust, the anti-tipping properties of the entire rig in the width and length directions become particularly important during drilling. Current methods for preventing overturning of rescue drilling rigs include fixing the rig frame to the ground with anchor bolts or using structural components extending from the frame to brace against the tunnel wall. However, single-support methods can cause the rescue drilling rig to detach from the support due to excessive torque during operation, leading to tunnel collapse and endangering the safety of construction workers. Utility Model Content
[0003] The purpose of this utility model is to provide a composite support device for coal mine rescue drilling rigs, so as to solve the technical problem in the prior art where a single support causes the rescue drilling rig to detach from the support during the excavation of rescue channels due to excessive torque. The specific technical solution is as follows:
[0004] This utility model provides a composite support device for a coal mine rescue drilling rig, including a strut, a fastener, and a connecting seat. The connecting seat has a first connecting hole for installing the fastener, which is used to connect to the bottom rock of the rescue roadway. The connecting seat also has a limiting notch for limiting the bottom of the strut. The top surface of the connecting seat is used for detachable connection to the rescue drilling rig. The strut is used to support the top surface of the rescue roadway between the connecting seat and the top surface of the rescue roadway.
[0005] A further improvement of this utility model of a composite support device for coal mine rescue drilling rigs is that the connecting seat includes a top plate, a connecting plate, and a bottom plate connected in sequence, the first connecting hole is opened on the bottom plate, and the top plate is provided with a second connecting hole for connecting the rescue drilling rig.
[0006] A further improvement of this utility model of a composite support device for coal mine rescue drilling rigs is that the number of the first connecting holes and the number of the fasteners are both multiple, and the fasteners are set in a one-to-one correspondence with the first connecting holes.
[0007] A further improvement of this utility model of a composite support device for coal mine rescue drilling rigs is that the number of the second connecting holes is multiple, and the multiple second connecting holes are arranged at intervals.
[0008] A further improvement of this utility model's composite support device for coal mine rescue drilling rigs is that the support rod is a telescopic rod.
[0009] A further improvement of this utility model's composite support device for coal mine rescue drilling rigs is that the telescopic rod is a hydraulic rod.
[0010] A further improvement of this utility model of a composite support device for coal mine rescue drilling rigs is that support seats are provided at both ends of the support rod.
[0011] A further improvement of this utility model of a composite support device for coal mine rescue drilling rigs is that a hinge groove is provided on one of the support seats of the support rod, and the support rod is provided with a ball head that cooperates with the hinge groove.
[0012] The application of the technical solution of this utility model has the following beneficial effects:
[0013] This utility model relates to a composite support device for coal mine rescue drilling rigs. Through the connection force established between fasteners and fastener holes, the fasteners firmly fix the rescue vehicle frame to the ground, working together with the struts to provide support. This ensures the stable torque required when the rescue drilling rig outputs high torque later on, solving the technical problem in existing technologies where a single support causes the rescue drilling rig to detach from the support during travel due to excessive torque when excavating rescue tunnels. The limiting notch on the connecting seat of this utility model prevents the strut from failing and causing danger, thus ensuring that the strut is always bound to the connecting seat during the advancement of the rescue drilling rig, achieving stable support for the rescue tunnel.
[0014] This invention utilizes a combined method of struts and fasteners to ensure the rapid and stable operation of the rescue drilling rig. The struts facilitate rapid setup, providing initial stability during operation. The pre-tension generated by the struts partially resists the torque during drilling and increases friction between the rig and the ground, mitigating the thrust required by the drill. This also prevents frequent equipment shaking that could disrupt the connection between the fasteners and the roadway rock. As the rescue progresses and the fastener holes establish a connection, the combined support of the struts and fasteners resists the increasing torque and thrust of the drill, ensuring the rig's stability in the later stages of the rescue operation.
[0015] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0017] Figure 1 This is a schematic diagram showing the usage status of the composite support device for coal mine rescue drilling rigs of this utility model;
[0018] Figure 2 This is a schematic diagram of the composite support device for coal mine rescue drilling rigs of this utility model;
[0019] Figure 3 This is a schematic diagram of the strut structure of the composite support device for coal mine rescue drilling rigs of this utility model;
[0020] Figure 4 This is a schematic diagram of the connecting seat structure of the composite support device for coal mine rescue drilling rigs of this utility model.
[0021] Among them, 1. Top surface of rescue tunnel; 2. Support rod; 3. Rescue drilling rig; 4. First connecting hole; 5. Fastener; 6. Bottom surface of rescue tunnel; 7. Connecting seat; 8. Second connecting hole; 9. Limiting notch; 10. Support seat; 11. Ball head. Detailed Implementation
[0022] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0023] See Figures 1-4 As shown, a composite support device for a coal mine rescue drilling rig includes a strut 2, a fastener 5, and a connecting seat 7. The connecting seat 7 has a first connecting hole 4 for mounting the fastener 5, which is used to connect to the bottom rock of the rescue roadway. The connecting seat 7 also has a limiting notch 9 for limiting the bottom of the strut 2. The top surface of the connecting seat 7 is detachably connected to the rescue drilling rig 3. The strut 2 is used to support the space between the top surface 1 of the rescue roadway and the connecting seat 7. In this embodiment, the fastener 5 is preferably an anchor nail, and the connecting seat 7 is an anchor nail seat.
[0024] This utility model is used in combination, preferably at least four, arranged at at least four corners of the rescue drill 3 to ensure the stability of the rescue drill 3. The limiting notch 9 can also be replaced with bolts to connect the support rod 2 to the connecting seat 7.
[0025] Preferably, the connecting seat 7 includes a top plate, a connecting plate, and a bottom plate connected in sequence. The first connecting hole 4 is opened on the bottom plate, and the top plate has a second connecting hole 8 for connecting the rescue drilling rig 3. The connecting seat 7 is a block with a certain width, length, and thickness, and has a certain weight, so that it has a certain friction with the bottom surface of the rescue tunnel.
[0026] Preferably, there are multiple first connecting holes 4 and multiple fasteners 5, and each fastener 5 is provided in a one-to-one correspondence with a first connecting hole 4.
[0027] Preferably, there are multiple second connecting holes 8, which are spaced apart. The drill rig 3 can be connected to the bottom of the drill rig 3 by bolts passing through the second connecting holes 8.
[0028] Preferably, the support rod 2 is a telescopic rod. This telescopic rod can be a hydraulic rod, a pneumatic rod, or a mechanical rod, etc.
[0029] In this embodiment, the telescopic rod is a hydraulic rod to allow for length adjustment of the support rod 2.
[0030] Preferably, each end of the support rod 2 is provided with a support seat 10. The support seat 10 increases the contact area between the support rod 2 and the top and bottom of the tunnel, thereby increasing friction and improving the stability of the support. During installation, a recess can be drilled in the top of the rescue tunnel to accommodate the support seat 10, thus limiting the top of the support rod 2 and preventing it from tilting. Alternatively, the other end of the support rod 2 can be fixed to the top wall of the rescue tunnel using expansion bolts or similar materials.
[0031] Preferably, one of the support seats 10 of the support rod 2 is provided with a hinge groove, and the support rod 2 is provided with a ball head 11 that mates with the hinge groove. The hinge groove has a spherical inner wall, and the interaction between the ball head 11 and the hinge groove can eliminate the effect of the non-parallelism between the connecting seat 7 and the pit on the top surface 1 of the rescue tunnel.
[0032] When a coal mine roadway collapses, a rescue drill rig 3 needs to be used to open a rescue passage in the collapsed area to rescue trapped personnel. First, the rescue drill rig 3 is assembled and connected to the connecting seat 7 using bolts through the second connecting hole 8. A recess corresponding to the top surface 1 of the rescue roadway is chiseled above the connecting seat 7 to match the support seat 10. One end of the support rod 2 is fixed into the limiting notch 9 of the connecting seat 7, and the support rod 2 is extended so that its other end is tightly supported in the recess on the top surface 1 of the rescue roadway, thus pressing the rescue drill rig 3 firmly against the bottom surface of the rescue roadway. Based on the position of the first connecting hole 4 on the connecting seat 7, fastener holes are drilled into the bottom surface 6 of the rescue roadway. After drilling, expansive cement mixed with a quick-setting agent is injected into the fastener holes. Then, fasteners 5 are inserted into the corresponding first connecting hole 4 and fastener holes. The pre-tightening force generated by the support rod 2 prevents the rescue drill rig 3 from frequently shaking, which could cause the fasteners 5 to fail to establish a stable connection with the fastener holes when the cement solidifies. After the expansive cement mixed with the quick-setting agent has solidified rapidly, the fastener 5 is fixed to the bottom surface 6 of the rescue tunnel, thereby providing additional stabilizing torque for the rescue drilling rig 3, realizing composite support when the rescue drilling rig 3 is drilling, and ensuring the stable operation of the rescue drilling rig 3.
[0033] This utility model relates to a composite support device for coal mine rescue drilling rigs. Through the connection force established between fasteners 5 and their holes, fasteners 5 firmly fix the rescue vehicle frame to the ground, working together with the support rod 2 to provide a supporting effect. This ensures the stable torque required when the rescue drilling rig 3 outputs high torque later on, solving the technical problem in existing technologies where a single support causes the rescue drilling rig 3 to detach from the support during its movement due to excessive torque when excavating rescue tunnels. The limiting notch 9 on the connecting seat 7 of this utility model prevents the support rod 2 from failing and causing danger, thus ensuring that the support rod 2 is always bound to the connecting seat 7 during the advancement of the rescue drilling rig 3, achieving stable support for the rescue tunnel.
[0034] This invention utilizes a combined method of support rod 2 and fastener 5 to ensure the rescue drilling rig 3 can quickly achieve rescue and operate stably. The rapid erection of support rod 2 provides initial stability for the rescue drilling rig 3. The pre-tension force generated by support rod 2 partially resists the torque during drilling and increases the friction between the rescue drilling rig 3 and the ground, resisting the propulsive force required by the rig. It also prevents frequent equipment shaking that could prevent the fastener 5 from establishing a stable connection with the roadway rock. As the rescue progresses and the connection force between the fastener 5 and its hole is established, the combined support of support rod 2 and fastener 5 resists the gradually increasing torque and propulsive force during the operation of the rescue drilling rig 3, ensuring the stability of the rescue drilling rig 3 in the later stages of the rescue.
[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 compound support device for a coal mine rescue drilling rig, characterised in that, It includes a strut (2), a fastener (5) and a connecting seat (7); the connecting seat (7) has a first connecting hole (4) for the fastener (5) to be installed, the fastener (5) is used to connect to the bottom rock of the rescue tunnel, the connecting seat (7) has a limiting notch (9) for limiting the bottom of the strut (2), the top surface of the connecting seat (7) is used to be detachably connected to the rescue drilling rig (3); the strut (2) is used to support the top surface (1) of the rescue tunnel and the connecting seat (7).
2. The coal mine rescue drill composite support apparatus according to claim 1, wherein, The connecting seat (7) includes a top plate, a connecting plate and a bottom plate connected in sequence. The first connecting hole (4) is opened on the bottom plate, and the top plate is provided with a second connecting hole (8) for connecting the rescue drilling rig (3).
3. The coal mine rescue drill composite support apparatus of claim 2, wherein, The number of the first connecting holes (4) and the number of the fasteners (5) are both multiple, and the fasteners (5) are set in a one-to-one correspondence with the first connecting holes (4).
4. The coal mine rescue drill composite support apparatus of claim 2, wherein, The number of the second connecting holes (8) is multiple, and the multiple second connecting holes (8) are arranged at intervals.
5. The coal mine rescue drill composite support apparatus of claim 1, wherein, The support rod (2) is a telescopic rod.
6. The coal mine rescue drill composite support apparatus of claim 5, wherein, The telescopic rod is a hydraulic rod.
7. The coal mine rescue drill composite support apparatus of claim 1, wherein, The two ends of the support rod (2) are respectively provided with support seats (10).
8. The coal mine rescue drill composite support apparatus of claim 7, wherein, A hinge groove is provided on one of the support seats (10) of the support rod (2), and the support rod (2) is provided with a ball head (11) that cooperates with the hinge groove.