A flight bar machine tail pushing mechanism
By setting a push-pull rod at the tail of the scraper conveyor to form a triangular structure, the problem of insufficient strength caused by the cantilever structure of the push beam is solved, and the stability and safety of the scraper conveyor tail push mechanism are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU COAL MINING LONGWALL FACE MASCH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-19
AI Technical Summary
The push beam at the tail of the existing scraper conveyor extends beyond the machine body, forming a cantilever structure, which results in insufficient strength and affects the stability and safety of the support frame.
Push-pull rods are installed at the front end of the moving beam and on the side of the fixing groove away from the end support to form a triangular structure, which increases the strength and stability of the moving beam.
The triangular structure enhances the strength and stability of the pushing beam, ensuring the safety and reliability of the pushing mechanism.
Smart Images
Figure CN224376728U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coal block equipment, specifically relating to a scraper conveyor tail pushing mechanism. Background Technology
[0002] At the end of the tunnel, the roof pressure is high. To ensure safety in case of roof collapse on the old mine side, some mines choose to use end supports for stabilization, working in conjunction with the face supports for tie-down. Therefore, the scraper conveyor needs to provide sufficient support installation space at its tail end. This is for connecting the supports and the scraper conveyor, facilitating mutual fulcrum movement between the scraper conveyor and the supports. However, if the end supports extend beyond the tail section of the conveyor body, as shown in the attached diagram... Figure 1 As shown, the second end bracket extends beyond the machine body length. At this point, the push beam used to connect to the second end bracket is entirely outside the scraper conveyor body, forming a cantilever structure with very weak strength. Patent CN118479200A provides a scraper conveyor pusher section and scraper conveyor, including a push beam and a pusher seat. However, in the above structure, the push beam does not extend beyond the tail section and is not a cantilever structure. Summary of the Invention
[0003] This utility model provides a tail-pushing mechanism for a scraper conveyor.
[0004] The purpose of this utility model is achieved in the following manner: a scraper conveyor tail pushing mechanism, including a fixing groove on the upper surface for placing the tail frame, and a pushing beam fixedly connected to the fixing groove; the pushing beam is arranged on the side of the fixing frame near the end support and is used to connect with the end support; the front end of the pushing beam extends beyond the front end of the fixing groove; a push-pull rod is provided at the front end of the pushing beam and the front end of the fixing groove; the push-pull rod, the pushing beam, and the front end of the fixing frame form a triangular structure.
[0005] The pushing beam includes a first pushing beam connected to the fixing groove and a second pushing beam disposed at the front end of the first pushing beam; the first pushing beam and the second pushing beam are fixedly connected; the push-pull rod is fixedly disposed at the front end of the second pushing beam and the fixing groove on the side away from the end bracket; a plurality of pushing seats for connecting the end bracket are disposed on the first pushing beam and the second pushing beam along the length direction.
[0006] A small push beam is detachably installed at the front end of the fixed groove on the side away from the end bracket. The push-pull rod is detachably installed between the second push beam and the small push beam. The first push beam and the second push beam are detachably connected.
[0007] At least two slotted connecting seats are provided along the direction of the fixed groove on the side near the first pushing beam. The first pushing beam is provided with connecting ears along its length that mate with the slots of the connecting seats. A connecting seat is also provided at the front end of the fixed groove on the side away from the first pushing beam, and a corresponding connecting ear is provided on the small pushing beam. Each connecting seat and its corresponding connecting ear are connected by a pin. A first connecting member with a slot is provided at the front end of the first pushing beam, and a first connecting head inserted into the first connecting member is provided at the rear end of the second pushing beam. The first connecting member and the first connecting head are connected by a pin. Second connecting members with slots are provided at both ends of the push-pull rod. A second connecting head that mates with the front end of the small pushing beam and the side of the second pushing beam near the small pushing beam is provided. The second connecting member and the second connecting head are connected by a pin.
[0008] The fixing groove is welded to the connecting seat; both ends of the push-pull rod are welded to the second connecting piece; the first pushing beam is welded to the first connecting piece; the second pushing beam is welded to the corresponding second connecting head or integrally formed; the small pushing beam and the corresponding second connecting head are welded to form or integrally formed.
[0009] The first and second push beams have holes along their length on the side near the end bracket; the push seat has pin holes that engage with the holes.
[0010] Compared with the prior art, this utility model sets a push-pull rod between the front end of the pushing beam and the side of the fixing groove away from the end support, transforming the cantilever structure into a triangular structure, thereby increasing the strength and stability of the pushing beam and the entire pushing mechanism. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of an existing pushing mechanism.
[0012] Figure 2 This is a schematic diagram of the structure of this utility model.
[0013] Figure 3 This is a schematic diagram of the fixed groove structure.
[0014] Figure 4 This is a schematic diagram of a push-pull lever.
[0015] Figure 5 This is a schematic diagram of the second moving beam.
[0016] Figure 6 This is a schematic diagram of the first moving beam.
[0017] Figure 7 This is a schematic diagram of a small push beam.
[0018] Among them, 1 is the tail frame, 2 is the fixing groove, 20 is the connecting seat, 3 is the end bracket, 4 is the first pushing beam, 40 is the connecting ear, 41 is the first connecting piece, 5 is the second pushing beam, 51 is the first connecting head, 52 is the second connecting head, 6 is the push-pull rod, 62 is the second connecting piece, 7 is the pushing seat, 8 is the small pushing beam, 9 is the intermediate bracket, and 10 is the row of holes. Detailed Implementation
[0019] In this utility model, unless otherwise expressly specified and limited, the technical terms used in this application shall have the ordinary meaning understood by those skilled in the art. Terms such as "connected," "linked," "fixed," and "set" shall be interpreted broadly, referring to fixed connections, detachable connections, or integral connections; direct connections or indirect connections via an intermediate medium; mechanical connections or electrical connections. Unless otherwise expressly specified and limited, "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," or "over" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "under" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Relational terms such as "first," "second," etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms used in the description, such as “center,” “lateral,” “longitudinal,” “length,” “width,” “thickness,” “height,” “front,” “rear,” “left,” “right,” “up,” “down,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” “circumferential,” “clockwise,” and “counterclockwise,” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation.
[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Figure 2-7As shown, a scraper conveyor tail-end pushing mechanism includes a fixing groove 2 on the upper surface for placing a tail frame 1, and a pushing beam fixedly connected to the fixing groove 2. The pushing beam is located on the side of the fixing frame near the end support 3 and is used to connect with the end support 3. The front end of the pushing beam extends beyond the front end of the fixing groove 2. A push-pull rod 6 is provided between the front end of the pushing beam and the front end of the fixing groove 2. The push-pull rod 6, the pushing beam, and the front end of the fixing frame form a triangular structure. Here, the front end refers to the end away from the tail frame 1. The pushing beam is connected to the end support 3 or an intermediate support 9. Both the end support 3 and the intermediate support 9 are hydraulic supports, which, together with the pushing beam, the fixing groove 2, the tail frame 1, and the scraper conveyor, serve as fulcrums to push each other to move. During this process, the pushing beam is subjected to a large thrust, and the pushing beam needs to have high strength. Figure 1 In this design, the telescopic tail section is mounted on the fixed slot 2. The first pushing beam 4 is connected to the first end bracket 3 and the intermediate bracket 9. The second pushing beam 5, corresponding to the second end bracket 3, is located outside the machine body length. Therefore, the second pushing beam 5, used for connecting to the second end bracket 3, is entirely outside the machine body, forming a cantilever structure. When the front end of the pushing beam extends beyond the fixed slot 2 and the range of its upper tail section, a cantilever structure is formed, which can easily lead to insufficient strength. This invention addresses this by installing a push-pull rod 6 between the front end of the pushing beam and the front end of the fixed slot 2 on the side furthest from the end bracket 3, transforming the cantilever structure into a triangular structure, thereby increasing the strength and stability of the pushing beam and the entire pushing mechanism.
[0021] Furthermore, the pushing beam includes a first pushing beam 4 connected to the fixing groove 2 and a second pushing beam 5 disposed at the front end of the first pushing beam 4; the first pushing beam 4 and the second pushing beam 5 are fixedly connected; the push-pull rod 6 is fixedly disposed at the front end of the second pushing beam 5 and the fixing groove 2 on the side away from the end bracket 3; a plurality of pushing seats 7 for connecting the end bracket 3 are disposed along the length direction on the first pushing beam 4 and the second pushing beam 5.
[0022] Furthermore: a small sliding beam 8 is detachably installed at the front end of the fixed groove 2 on the side away from the end bracket 3, and the push-pull rod 6 is detachably installed between the second sliding beam 5 and the small sliding beam 8; the first sliding beam 4 and the second sliding beam 5 are detachably connected. Existing methods such as bolt connection and connection between pin and hole can be used for disassembly.
[0023] Specifically: At least two slotted connecting seats 20 are provided along the side of the fixing groove 2 near the first pushing beam 4, and the first pushing beam 4 is provided with connecting ears 40 along its length that mate with the slots of the connecting seats 20; a connecting seat 20 is also provided at the front end of the fixing groove 2 on the side away from the first pushing beam 4, and a corresponding connecting ear 40 is provided on the small pushing beam 8; each connecting seat 20 and its corresponding connecting ear 40 are connected by a pin; a slotted first connecting member 41 is provided at the front end of the first pushing beam 4, and a first connecting head 51 inserted into the first connecting member 41 is provided at the rear end of the second pushing beam 5; the first connecting member 41 and the first connecting head 51 are connected by a pin; both ends of the push-pull rod 6 are respectively provided with slotted second connecting members 62, and the front end of the small pushing beam 8 and the side of the second pushing beam 5 near the small pushing beam 8 are respectively provided with mating second connecting heads 52; the second connecting member 62 and the second connecting head 52 are connected by a pin. Each of the connecting seats 20 is provided with two pin holes; the connecting ears 40 are also provided with pin holes; the connecting seats 20 and the connecting ears 40 can be connected by two pins, each pin being fixed by a pin end and a U-shaped clip. Alternatively, they can be fixed by other means. The first connecting member 41, the second connecting member 62, the first connecting head 51, and the second connecting head 52 can be fixed in the same way. The structures of the first connecting member 41 and the second connecting member 62 can be the same or slightly different, as long as there is a groove to facilitate the insertion and fixing of the corresponding first connecting member 41 and second connecting member 62. The groove can be open on four sides, or it can be open on one or two sides. Of course, they can also be connected by only one pin, for example, the second connecting head 52 on the small pushing beam 8 can be provided with one pin hole. The front end of the second pushing beam 5 can also be provided with the second connecting head 52. The rear end of the first pushing beam 4 can also be provided with the first connecting member 41. In addition, the second connector 52 on the small push beam 8 can be part of the small push beam 8, and the middle connector 40 can be connected to the small push beam 8 by welding.
[0024] Preferably, the fixing groove 2 is welded to the connecting seat 20; both ends of the push-pull rod 6 are welded to the second connecting member 62; the first pushing beam 4 is welded to the first connecting member 41; the second pushing beam 5 is welded to the corresponding second connecting head 52 or integrally formed; the small pushing beam 8 and the corresponding second connecting head 52 are welded to each other or integrally formed. Additionally, the front and rear ends of the second pushing beam can be used as the first connecting head 51, integrally formed with the second pushing beam. Alternatively, they can be fixedly connected by welding.
[0025] Furthermore, the first pushing beam 4 and the second pushing beam 5 have holes 10 along their length on the side near the end bracket 3; the pushing seat 7 has pin holes that engage with the holes 10. The structure of the pushing seat 7 adopts existing technology, with an open slot into which the first pushing beam 4 or the second pushing beam 5 can be inserted, and it is fixed to it by a pin.
[0026] In the pushing mechanism of this invention, the push-pull rod 6, the fixing groove 2, and the second pushing beam 5 are arranged in a triangle. The second pushing beam 5 provides good support for the cantilever structure and is integrated with the tail section. After the first pushing beam 4, the second pushing beam 5, and the end support 3 are connected, they move forward alternately with each other as fulcrums. The fixing groove 2 is integrated with the tail section. A hydraulic cylinder is installed at the bottom of the hydraulic support, such as the end support. The pushing beam and the hydraulic support are connected by a hydraulic cylinder at the bottom of the hydraulic support. When one of them is pushed or pulled by the hydraulic cylinder to move, the other acts as a fulcrum, thereby achieving interactive forward movement with each other as fulcrums.
[0027] The technical features of the embodiments described above can be combined in any way, and as long as there is no contradiction in the combination of these technical features, they should all be considered within the scope of this specification. Without departing from the overall concept of this utility model, any equivalent substitutions or modifications made to the technical solution of this utility model, as well as any changes and improvements, should also be considered within the protection scope of this utility model.
Claims
1. A scraper conveyor tail-end pushing mechanism, comprising a fixing groove on the upper surface for placing a tail frame, and a pushing beam fixedly connected to the fixing groove; the pushing beam is disposed on the side of the fixing frame near the end support and is used to connect to the end support; characterized in that: The front end of the pushing beam extends beyond the front end of the fixing groove; a push-pull rod is provided at the front end of the pushing beam and the front end of the fixing groove; the front ends of the push-pull rod, the pushing beam, and the fixing frame form a triangular structure.
2. The scraper conveyor tail-pushing mechanism according to claim 1, characterized in that: The pushing beam includes a first pushing beam connected to the fixing groove and a second pushing beam disposed at the front end of the first pushing beam; the first pushing beam and the second pushing beam are fixedly connected; the push-pull rod is fixedly disposed at the front end of the second pushing beam and the fixing groove on the side away from the end bracket; a plurality of pushing seats for connecting the end bracket are disposed on the first pushing beam and the second pushing beam along the length direction.
3. The scraper conveyor tail-pushing mechanism according to claim 2, characterized in that: A small push beam is detachably installed at the front end of the fixed groove on the side away from the end bracket. The push-pull rod is detachably installed between the second push beam and the small push beam. The first push beam and the second push beam are detachably connected.
4. The scraper conveyor tail-pushing mechanism according to claim 3, characterized in that: At least two slotted connecting seats are provided along the direction of the fixed groove on the side near the first pushing beam. The first pushing beam is provided with connecting ears along its length that mate with the slots of the connecting seats. A connecting seat is also provided at the front end of the fixed groove on the side away from the first pushing beam, and a corresponding connecting ear is provided on the small pushing beam. Each connecting seat and its corresponding connecting ear are connected by a pin. A first connecting member with a slot is provided at the front end of the first pushing beam, and a first connecting head inserted into the first connecting member is provided at the rear end of the second pushing beam. The first connecting member and the first connecting head are connected by a pin. Second connecting members with slots are provided at both ends of the push-pull rod. A second connecting head that mates with the front end of the small pushing beam and the side of the second pushing beam near the small pushing beam is provided. The second connecting member and the second connecting head are connected by a pin.
5. The scraper conveyor tail-pushing mechanism according to claim 4, characterized in that: The fixing groove is welded to the connecting seat; both ends of the push-pull rod are welded to the second connecting piece; the first pushing beam is welded to the first connecting piece; the second pushing beam is welded to the corresponding second connecting head or integrally formed; the small pushing beam and the corresponding second connecting head are welded to form or integrally formed.
6. The scraper conveyor tail-pushing mechanism according to claim 4, characterized in that: The first and second push beams have holes along their length on the side near the end bracket; the push seat has pin holes that engage with the holes.