An adaptive pushing device between front and rear frames and a split-type filling hydraulic support
By using an adaptive pushing device between the front and rear supports, the problem of pushing traditional paste-filled hydraulic supports under complex bottom conditions has been solved, enabling large-step pushing and stable operation, improving coal mining efficiency and isolation efficiency, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 兖矿东华装备制造(泰安)有限公司
- Filing Date
- 2025-09-05
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional paste-filled hydraulic supports cannot be moved during the solidification of the paste, resulting in reduced coal mining time, low isolation efficiency, and high costs. Furthermore, the movable part of the split-type paste-filled hydraulic support is prone to breakage or collapse under complex floor conditions.
An adaptive pushing device between the front and rear frames is adopted, including a pushing hydraulic cylinder, a sliding support and a tongue plate. The adaptive movement of the front and rear frames is realized through the hinge assembly, ensuring the coaxiality of the pushing hydraulic cylinder and the cylinder body end, and the swing of the tongue plate is limited by the drawer-type structure to achieve large step pushing.
It enables stable pushing of the split-type filling hydraulic support under complex base conditions, avoids breakage of the pushing hydraulic cylinder and collapse of the rear frame, improves coal mining operation time and isolation efficiency, and reduces costs.
Smart Images
Figure CN224432588U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of split-type filling hydraulic support, and relates to an adaptive pushing device between front and rear frames and a split-type filling hydraulic support. Background Technology
[0002] Traditional paste-filling hydraulic supports typically have a rigid connection between the front support section used for longwall mining and the rear support section used for filling and isolation. This creates a conflict between mining and filling operations, making them only suitable for alternating mining and filling operations. During the solidification of the paste, the rear support section cannot move, preventing the front support section from advancing coal. Therefore, using traditional paste-filling hydraulic supports necessitates a "two-step mining, one-step filling" longwall mining and filling process, resulting in reduced mining time, low isolation efficiency, and high costs.
[0003] To address this, the hydraulic support for filling is designed as a split structure, allowing the front frame to move relative to the rear frame. This enables the front frame to advance during the solidification of the filling paste, thereby optimizing the backfilling process, increasing mining time, improving isolation efficiency, and reducing costs. However, the floor of the longwall face is uneven along its strike and dip, sometimes with significant slopes. The current split-type hydraulic support, with its sliding section between the front and rear frames, cannot adapt to the conditions of the longwall face floor. To achieve large-step sliding, the sliding section is prone to breakage, and the rear frame may even risk toppling over at large strike or dip angles. Utility Model Content
[0004] The purpose of this utility model is to propose an adaptive pushing device between the front and rear frames and a split-type filling hydraulic support, which can realize the large-step pushing of the split-type filling hydraulic support and can adapt to the working conditions of the bottom plate of the mining face.
[0005] To achieve the above objectives, this utility model adopts the following technical solution:
[0006] An adaptive device for inter-frame movement, comprising:
[0007] The first articulation assembly is used for mounting to the front frame portion;
[0008] A push hydraulic cylinder, the telescopic end of which is connected to a first hinge assembly, and a third hinge assembly is provided at the cylinder body end of the push hydraulic cylinder, the third hinge assembly being used to hinge the rear frame part;
[0009] Among them, the telescopic end of the push hydraulic cylinder can swing relative to the front frame in the left, right and up and down directions, and the cylinder body end of the push hydraulic cylinder can swing relative to the rear frame in the up and down direction.
[0010] The second articulation assembly is used for mounting to the front frame section;
[0011] A sliding support is provided on the rear frame section and extends along the front and rear directions of the rear frame section.
[0012] The tongue plate is slidably fitted with the sliding support member, and the front end of the tongue plate is connected to the second hinge assembly;
[0013] The front end of the tongue plate can swing relative to the front frame in the left, right, up, and down directions.
[0014] Preferably, the first hinge assembly includes a first mounting base and a first swing base. The first mounting base is disposed on the front frame portion. The first swing base is hinged to the first mounting base and can swing relative to the first mounting base in the left and right directions. The telescopic end of the push hydraulic cylinder is hinged to the first swing base and can swing relative to the first swing base in the up and down directions.
[0015] Preferably, the second hinge assembly includes a second mounting base and a second swing base. The second mounting base is disposed on the front frame portion. The second swing base is hinged to the second mounting base and can swing relative to the second mounting base in the up and down direction. The front end of the tongue plate is hinged to the second swing base and can swing relative to the second swing base in the left and right direction.
[0016] Preferably, the second swing seat is provided with at least one first limiting hole, and the front end of the tongue plate is provided with a second limiting hole corresponding to the first limiting hole. The first limiting hole and the second limiting hole can cooperate with a limiting pin.
[0017] Preferably, the third hinge assembly includes a mounting bracket, a hinge shaft, and a hinge seat. The mounting bracket is disposed at the cylinder end of the pushing hydraulic cylinder. The hinge shaft is disposed at the left and right relative positions of the mounting bracket. The hinge shaft hinges the hinge seat. The hinge seat is used to be disposed on the rear frame portion.
[0018] Preferably, the direction of extension and retraction of the telescopic end of the push hydraulic cylinder relative to the cylinder body end is parallel to the direction of sliding of the tongue plate relative to the sliding support.
[0019] Preferably, the sliding support is configured as a hollow structure, and the tongue plate is located inside the sliding support.
[0020] Preferably, the inner contour of the sliding support matches the outer contour of the tongue plate to limit the tongue plate from swinging relative to the sliding support in the left-right and up-down directions.
[0021] Preferably, the inner contour of the sliding support is a cuboid, and the outer contour of the tongue plate is a cuboid.
[0022] A split-type filling hydraulic support includes a front frame portion and a rear frame portion, and the aforementioned front and rear frame inter-frame adaptive pushing device is provided between the front and rear frame portions.
[0023] Compared with the prior art, this utility model has the following advantages:
[0024] As described above, this utility model discloses an adaptive pushing device between the front and rear frames, which is applied to a split-type filling hydraulic support. During the extension and retraction of the pushing hydraulic cylinder relative to the cylinder body end, the tongue plate slides in conjunction with the sliding support. The "drawer-type structure" between the tongue plate and the sliding support provides limiting guidance, ensuring that the extension and retraction end of the pushing hydraulic cylinder and the cylinder body end maintain a relatively precise coaxiality. When the bottom plate of the working face is uneven along the direction and inclination, the pushing hydraulic cylinder and the tongue plate can swing synchronously along the left, right, up, and down directions. When the bottom plate of the working face has a large slope along the direction or inclination, the tongue plate can be restricted from swinging relative to the sliding support in the left, right, up, and down directions. In this way, the pushing hydraulic cylinder can have a large extension ratio, realize large-step pushing of the split-type filling hydraulic support, and can adapt to the working conditions of the bottom plate of the mining face, avoiding breakage of the pushing hydraulic cylinder and also avoiding the collapse of the rear frame. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0026] Figure 1 This is a schematic diagram of the split-type filling hydraulic support with the hydraulic cylinder in the retracted state, according to an embodiment of the present invention.
[0027] Figure 2 This is a schematic diagram of the structure of the split-type filling hydraulic support with the hydraulic cylinder in the extended state, according to an embodiment of the present invention.
[0028] Figure 3 This is a partial structural schematic diagram of the adaptive pushing device between the front and rear frames in an embodiment of the present invention, viewed from a side angle.
[0029] Figure 4 This is a schematic diagram of the front and rear frame-to-frame adaptive shifting device in an embodiment of the present invention, viewed from a top-down perspective. Figure 1 ;
[0030] Figure 5 This is a schematic diagram of the front and rear frame-to-frame adaptive shifting device in an embodiment of the present invention, viewed from a top-down perspective. Figure 2 . Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0034] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0037] Example 1
[0038] like Figures 1 to 5 As shown, the adaptive pushing device between the front and rear frames in this embodiment includes a pushing hydraulic cylinder 1, a sliding support 2, a tongue plate 3, a first hinge assembly, and a second hinge assembly.
[0039] The first hinge assembly is used to assemble the front base 41 of the front frame portion. The telescopic end of the push hydraulic cylinder 1 is connected to the first hinge assembly, and the cylinder body end of the push hydraulic cylinder 1 is provided with a third hinge assembly, which is used to hinge the rear base 42 of the rear frame portion. The telescopic end of the push hydraulic cylinder 1 can swing relative to the front base 41 of the front frame portion in the left, right, and up, down directions, and the cylinder body end of the push hydraulic cylinder 1 can swing relative to the rear base 42 of the rear frame portion in the up, down direction.
[0040] The second hinge assembly is used to assemble with the front base 41 of the front frame portion. The sliding support 2 is provided on the rear base 42 of the rear frame portion, extending along the front-rear direction of the rear base 42. The tongue plate 3 slidably engages with the sliding support 2, and its front end is connected to the second hinge assembly. The front end of the tongue plate 3 can swing relative to the front base 41 of the front frame portion in the left-right and up-down directions.
[0041] The first hinge assembly includes a first mounting base 51 and a first swing base 52. The first mounting base 51 is used to be disposed on the front base 41 of the front frame portion. The first swing base 52 is hinged to the first mounting base 51 via a first hinge 53. The first swing base 52 can swing relative to the first mounting base 51 in the left and right directions. The extension end of the push hydraulic cylinder 1 is hinged to the first swing base 52 via a second hinge 54. The extension end of the push hydraulic cylinder 1 can swing relative to the first swing base 52 in the up and down directions.
[0042] The second hinge assembly includes a second mounting base 61 and a second swing base 62. The second mounting base 61 is used to be disposed on the front base 41 of the front frame portion. The second swing base 62 is hinged to the second mounting base 61 via a third hinge 63. The second swing base 62 can swing relative to the second mounting base 61 in the up and down direction. The front end of the tongue plate 3 is hinged to the second swing base 62 via a fourth hinge 64. The front end of the tongue plate 3 can swing relative to the second swing base 62 in the left and right direction.
[0043] The second swing seat 62 is provided with a first limiting hole on the left and right sides of the fourth hinge 64, and the front end of the tongue plate 3 is provided with a second limiting hole 31 corresponding to the first limiting hole. The first limiting hole and the second limiting hole 31 can cooperate with the limiting pin.
[0044] After the front base 41 is pushed forward to the set position by the push hydraulic cylinder 1, the first limiting hole and the second limiting hole 31 are engaged with the limiting pin, so that the front end of the tongue plate 3 cannot swing relative to the second swing seat 62 in the left or right direction, thereby keeping the front base 41 of the front frame part and the rear base 42 of the rear frame part from swinging left or right. In addition, the push hydraulic cylinder 1 is set as a self-locking hydraulic cylinder. By the self-locking of the push hydraulic cylinder 1, the front base 41 of the front frame part and the rear base 42 of the rear frame part are kept from moving forward or backward.
[0045] The third hinge assembly includes a mounting bracket 71, a hinge shaft 72, and a hinge seat 73. The mounting bracket 71 is disposed at the cylinder end of the pushing hydraulic cylinder 1. The hinge shaft 72 is disposed at a left-right relative position to the mounting bracket 71. The hinge shaft 72 hinges to the hinge seat 73, which is mounted on the rear base 42 of the rear frame. The hinge shaft 72 rotates relative to the hinge seat 73, causing the cylinder end of the pushing hydraulic cylinder 1 to swing relative to the rear base 42 of the rear frame in the up-down direction.
[0046] The direction of extension and retraction of the telescopic end of the push hydraulic cylinder 1 relative to the cylinder body is parallel to the direction of sliding of the tongue plate 3 relative to the sliding support 2. In this way, the "oscillating motion of the push hydraulic cylinder 1 and the extension and retraction motion of the telescopic end of the push hydraulic cylinder 1 relative to the cylinder body" are synchronized with the "oscillating motion of the tongue plate 3 and the extension and retraction motion of the tongue plate 3 relative to the sliding support 2".
[0047] By synchronizing the swing motion of the "push hydraulic cylinder 1" with the swing motion of the "tongue plate 3", the front base 41 of the front frame and the rear base 42 of the rear frame can be misaligned in the left and right or up and down directions to adapt to the uneven working conditions of the bottom plate of the working surface along the tendency or direction.
[0048] The sliding support 2 is a hollow structure, with the tongue plate 3 located inside it. The tongue plate 3 and the sliding support 2 cooperate to form a "drawer-type structure." Specifically, the inner contour of the sliding support 2 matches the outer contour of the tongue plate 3 to restrict the tongue plate 3 from swinging relative to the sliding support 2 in the left-right and up-down directions. The inner contour of the sliding support 2 is a cuboid, and the outer contour of the tongue plate 3 is also a cuboid. Thus, when the bottom plate of the working surface has a significant slope along its direction or inclination, the cooperation between the inner contour of the sliding support 2 and the outer contour of the tongue plate 3 restricts the tongue plate 3 from swinging relative to the sliding support 2 in the left-right or up-down directions, preventing the rear frame from tipping over in these directions.
[0049] The telescopic end of the push hydraulic cylinder 1 extends and retracts relative to the cylinder body end, thereby driving the front base 41 of the front frame part to move relative to the rear base 42 of the rear frame part. With the "drawer-type structure" for limiting and guiding, the length of the push hydraulic cylinder 1 can be designed to be as long as possible to achieve large-step pushing of the split filling hydraulic support.
[0050] Example 2
[0051] A split-type filling hydraulic support includes a front frame part and a rear frame part. The front base 41 of the front frame part and the rear base 42 of the rear frame part are provided with the front and rear frame inter-frame adaptive pushing device described in Embodiment 1.
[0052] This concludes the detailed description of this embodiment in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the adaptive pushing device between the front and rear frames and the split-type filling hydraulic support of this utility model. This utility model discloses an adaptive pushing device between the front and rear frames. When applied to a split-type filling hydraulic support, during the extension and retraction of the extension end of the pushing hydraulic cylinder 1 relative to the cylinder body end, the tongue plate 3 slides in conjunction with the sliding support 2. The "drawer-type structure" between the tongue plate 3 and the sliding support 2 provides limiting guidance, ensuring that the extension and retraction end of the pushing hydraulic cylinder 1 maintains a relatively precise coaxiality with the cylinder body end. When the bottom plate of the working face is uneven along the direction and inclination, the pushing hydraulic cylinder 1 and the tongue plate can swing synchronously along the left, right, up, and down directions. When the bottom plate of the working face has a large slope along the direction or inclination, it can restrict the tongue plate 3 from swinging relative to the sliding support 2 in the left, right, up, and down directions. In this way, the pushing hydraulic cylinder 1 can have a large extension ratio, realize large-step pushing of the split-type filling hydraulic support, and can adapt to the working conditions of the bottom plate of the mining face, avoiding breakage of the pushing hydraulic cylinder 1 and preventing the rear frame from tilting.
[0053] Of course, the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model and should be protected by the present utility model.
Claims
1. A front and rear frame inter-shifting adaptive device, characterized in that, include: The first articulation assembly is used for mounting to the front frame portion; A push hydraulic cylinder, the telescopic end of which is connected to a first hinge assembly, and a third hinge assembly is provided at the cylinder body end of the push hydraulic cylinder, the third hinge assembly being used to hinge the rear frame part; Among them, the telescopic end of the push hydraulic cylinder can swing relative to the front frame in the left, right and up and down directions, and the cylinder body end of the push hydraulic cylinder can swing relative to the rear frame in the up and down direction. The second articulation assembly is used for mounting to the front frame section; A sliding support is provided on the rear frame section and extends along the front and rear directions of the rear frame section. The tongue plate is slidably fitted with the sliding support member, and the front end of the tongue plate is connected to the second hinge assembly; The front end of the tongue plate can swing relative to the front frame in the left, right, up, and down directions.
2. The adaptive shifting device between front and rear frames according to claim 1, characterized in that, The first hinge assembly includes a first mounting base and a first swing base. The first mounting base is used to be disposed on the front frame portion. The first swing base is hinged to the first mounting base and can swing relative to the first mounting base in the left and right directions. The telescopic end of the push hydraulic cylinder is hinged to the first swing base and can swing relative to the first swing base in the up and down directions.
3. The adaptive shifting device between front and rear frames according to claim 1 or 2, characterized in that, The second hinge assembly includes a second mounting base and a second swing base. The second mounting base is disposed on the front frame portion. The second swing base is hinged to the second mounting base and can swing relative to the second mounting base in the up and down direction. The front end of the tongue plate is hinged to the second swing base and can swing relative to the second swing base in the left and right direction.
4. The adaptive shifting device between front and rear frames according to claim 3, characterized in that, The second swing seat is provided with at least one first limiting hole, and the front end of the tongue plate is provided with a second limiting hole corresponding to the first limiting hole. The first limiting hole and the second limiting hole can cooperate with the limiting pin.
5. The adaptive shifting device between front and rear frames according to claim 1, characterized in that, The third hinge assembly includes a mounting bracket, a hinge shaft, and a hinge seat. The mounting bracket is disposed at the cylinder end of the pushing hydraulic cylinder. The hinge shaft is disposed at the left and right relative positions of the mounting bracket. The hinge shaft is hinged to the hinge seat. The hinge seat is used to be disposed on the rear frame portion.
6. The adaptive shifting device between front and rear frames according to claim 1, characterized in that, The direction of extension and retraction of the telescopic end of the push-moving hydraulic cylinder relative to the cylinder body end is parallel to the direction of sliding of the tongue plate relative to the sliding support.
7. The adaptive shifting device between front and rear frames according to claim 1, characterized in that, The sliding support is configured as a hollow structure, and the tongue plate is located inside the sliding support.
8. The adaptive shifting device between front and rear frames according to claim 7, characterized in that, The inner contour of the sliding support matches the outer contour of the tongue plate to limit the tongue plate from swinging relative to the sliding support in the left, right and up and down directions.
9. The adaptive shifting device between front and rear frames according to claim 8, characterized in that, The inner contour of the sliding support is a cuboid, and the outer contour of the tongue plate is a cuboid.
10. A split-type hydraulic filling support, the split-type hydraulic filling support comprising a front frame portion and a rear frame portion, characterized in that, An adaptive inter-frame movement device as described in any one of claims 1 to 9 is provided between the front frame portion and the rear frame portion.