High-speed limiting structure of hydraulic support

Abstract

The utility model relates to the technical field of hydraulic support, and disclose a kind of high-speed limiting structure of hydraulic support, including hydraulic support body, the hydraulic support body includes base, shelter beam, roof beam, the side of roof beam is hinged to the top of shelter beam, hydraulic rod is installed between the roof beam and base, linkage support rod is hingedly installed between the bottom of shelter beam and the side of base top, another side of roof beam is equipped with front beam.The utility model is set to the combined linkage assembly and corresponding gear, linkage shaft, semi-open support box, limiting output component combination uses after, can not interfere with hydraulic rod output operation at the same time, using the connecting state that combined linkage assembly and gear are always elastically engaged, the automatic output top pressure limiting effect of limiting output component to combined linkage assembly, gear, can carry out height limiting feedback to hydraulic rod before and after use, solve the problems existing in prior art.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology, specifically a high-speed limiting structure for hydraulic supports. Background Technology

[0002] Hydraulic supports are hydraulic power devices that use liquid pressure to generate supporting force and achieve automatic relocation for roof support and management. Their main components include a base, top beam, shield beam, front beam, and columns formed by several hydraulic rods. In specific use, the output angle of the hydraulic rods is adjustable, thus meeting the requirements of longwall fully mechanized mining faces with horizontal and gently inclined thick coal seams of less than or equal to 10 degrees for one-time top coal caving mining along the bottom plate, or steeply inclined extra-thick coal seams for horizontal layered top coal caving mining. They have a wide range of applications.

[0003] Currently, hydraulic supports are an indispensable supporting equipment in fully mechanized coal mining. The safety of their use is one of the key areas for improvement for personnel in related fields. For example, existing technologies disclose the use of limiting structures to provide auxiliary support for the inclined hydraulic rods. However, the limiting structures disclosed in existing technologies often require manual adjustment of the assembly sequence of each component, which is cumbersome and has a low feedback speed compared to the overall automatic operation process, which can easily delay the overall efficiency of the device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-speed limiting structure for hydraulic supports, which solves the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a high-speed limiting structure for a hydraulic support, comprising a hydraulic support body, the hydraulic support body including a base, a shield beam, and a top beam, one side of the top beam being hinged to the top of the shield beam, a hydraulic rod being installed between the top beam and the base, a linkage support rod being hinged between the bottom of the shield beam and one side of the top of the base, a front beam being installed on the other side of the top beam, the output end of the hydraulic rod being hinged to the inner wall of the top beam, and the bottom of the hydraulic rod housing being hinged to the inner wall of the base via pins, and both ends of the pins at the bottom of the hydraulic rod housing penetrating the base. All transmissions are connected to a limiting structure; the limiting structure includes a semi-open support box on the surface of the mounting base, a linkage shaft and a gear fitted inside the semi-open support box, one end of the linkage shaft is fixed to the end of the pin shaft, and the gear is fitted to the end of the other end of the linkage shaft, a composite linkage component is fixedly fitted in the middle of the semi-open support box, and the side structure of the composite linkage component can mesh with the gear and automatically move to make way after the gear rotates, a limiting output component is fitted inside the middle of the semi-open support box, and the output structure of the limiting output component can press and limit the composite linkage component.

[0006] Preferably, the composite linkage component includes a support plate fixedly sleeved inside the semi-open support box and a limiting plate movably sleeved inside the semi-open support box and in a relative position. A support shaft that can engage with the side structure of one side of the limiting plate is fixed in the middle of the support plate, and a return spring is installed on the surface of one side of the limiting plate and the surface of the support plate. The other side of the limiting plate is provided with teeth that can mesh with a gear.

[0007] Preferably, there are at least two support shafts, and the ends of both ends of the support shafts are T-shaped structures.

[0008] Preferably, the number of reset springs is not less than four and they are evenly distributed between the composite linkage assembly and the two limiting plates. The inner wall of the semi-open support box is fitted and connected to the corresponding side surface of the limiting plate, and a protective plate is snapped into the open port of the semi-open support box.

[0009] Preferably, a triangular block is fixedly fitted inside the bottom of each of the two limiting plates, and a limiting guide space is provided between the bottoms of the two limiting plates.

[0010] Preferably, the limiting output component includes an auxiliary hydraulic rod and a constraint block. The auxiliary hydraulic rod is fitted inside the semi-open support box, and the output end of the auxiliary hydraulic rod is connected to the bottom of the constraint block and can automatically drive the constraint block into the limiting guide space.

[0011] Preferably, both sides of the top of the constraint block are rounded, and the surface of the constraint block is coated with a wear-resistant coating.

[0012] Preferably, the end surface of the other end of the linkage shaft is provided with a splicing groove and a screw hole, the middle part of the gear is provided with an assembly hole, and a connecting block that can engage with the splicing groove is fixed in the assembly hole, and a limiting screw that can be threadedly connected to the screw hole is fitted inside the connecting block.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model, through the combination of the set composite linkage component with corresponding gears, linkage shafts, semi-open support boxes, and limit output components, can, without interfering with the hydraulic rod output operation, utilize the always elastic meshing connection state of the composite linkage component and gears, and the automatic output pressure limit effect of the limit output component on the composite linkage component and gears, to provide height limit feedback on the hydraulic rod before and after use, thus solving the problems existing in the prior art.

[0015] 2. The linkage shaft and gear of this utility model can be detached and disassembled through the auxiliary connection of the connecting block, splicing groove, screw hole and limit screw, which improves the convenience of gear disassembly and replacement, while also improving the continuous use effect of other structures and reducing the cost of use. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view schematic diagram of the structural composite linkage component of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the structural composite linkage component of this utility model;

[0019] Figure 4 This is an enlarged schematic diagram of the gear structure of this utility model;

[0020] Figure 5 This is a three-dimensional schematic diagram of the structural limiting output component of this utility model;

[0021] Figure 6 This is an enlarged schematic diagram of the linkage shaft of this utility model.

[0022] In the diagram: 1. Base; 2. Protective beam; 3. Top beam; 4. Front beam; 5. Hydraulic rod; 6. Linkage support rod; 7. Semi-open support box; 8. Linkage shaft; 9. Gear; 10. Composite linkage assembly; 101. Support plate; 102. Limiting plate; 103. Support shaft; 104. Return spring; 11. Auxiliary hydraulic rod; 12. Constraint block; 13. Connecting block; 14. Splicing groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6A high-speed limiting structure for a hydraulic support includes a hydraulic support body, which comprises a base 1, a shield beam 2, and a top beam 3. One side of the top beam 3 is hinged to the top of the shield beam 2. A hydraulic rod 5 is installed between the top beam 3 and the base 1. A linkage rod 6 is hinged between the bottom of the shield beam 2 and one side of the top of the base 1. A front beam 4 is installed on the other side of the top beam 3. The output end of the hydraulic rod 5 is hinged to the inner wall of the top beam 3, and the bottom of the hydraulic rod 5 housing is hinged to the inner wall of the base 1 via pins. Both ends of the pins at the bottom of the hydraulic rod 5 housing penetrate the base 1 and are connected to the limiting structure. The structure includes a semi-open support box 7 on the surface of the mounting base 1, a linkage shaft 8 and a gear 9 fitted inside the semi-open support box 7. One end of the linkage shaft 8 is fixed to the end of a pin, and the gear 9 is fitted to the end of the other end of the linkage shaft 8. A composite linkage component 10 is fixedly sleeved in the middle of the semi-open support box 7, and the side structure of the composite linkage component 10 can mesh with the gear 9 and automatically move to make way after the gear 9 rotates. A limit output component is fitted inside the middle of the semi-open support box 7, and the output structure of the limit output component can press and limit the composite linkage component 10.

[0025] The composite linkage assembly 10 includes a support plate 101 fixedly sleeved inside the semi-open support box 7 and a limiting plate 102 movably sleeved inside the semi-open support box 7 and in a relative position. A support shaft 103 is fixed in the middle of the support plate 101 and can be engaged with the side structure of one side of the limiting plate 102. A return spring 104 is installed on one side of the limiting plate 102 and the surface of the support plate 101. The other side of the limiting plate 102 is provided with teeth that can mesh with the gear 9, thereby enabling the composite linkage assembly 10 to mesh with the gear 9 and meet the subsequent high-speed limiting requirements.

[0026] At least two support shafts 103 are provided, thereby improving the connection strength between the limiting plate 102 and the support plate 101 and ensuring the structural strength of the support plate 101 and the two limiting plates 102 during continuous use. The ends of both ends of the support shafts 103 are T-shaped, thereby providing convenient support conditions for the subsequent installation of the return springs 104. At least four return springs 104 are provided and are evenly installed between the composite linkage component 10 and the two limiting plates 102, thereby ensuring the flexibility and compressive strength of the limiting plates 102 in subsequent continuous reciprocating movement. The inner wall of the semi-open support box 7 is fitted and connected to the corresponding side surface of the limiting plate 102, and a protective plate is nested in the open port of the semi-open support box 7. Triangular blocks are fixedly sleeved in the bottom of the two limiting plates 102 to improve the structural strength of the limiting plates 102 themselves. A limiting guide space is provided between the bottoms of the two limiting plates 102 to meet the clearance space conditions for subsequent automatic linkage limiting operations.

[0027] The limit output component includes an auxiliary hydraulic rod 11 and a constraint block 12. The auxiliary hydraulic rod 11 is fitted inside the semi-open support box 7, and the output end of the auxiliary hydraulic rod 11 is connected to the bottom of the constraint block 12 and can automatically drive the constraint block 12 into the limit guide space. This automatic limit adjustment method provides high-speed feedback, solving the problem of slow manual adjustment in the prior art. Both sides of the top of the constraint block 12 are set with rounded corners, and the surface of the constraint block 12 is coated with a wear-resistant coating to extend its service life.

[0028] During use, as the hydraulic rod 5 outputs and transmits to the designated position, the pin shaft related to the housing of the hydraulic rod 5 will drive the gear 9 to rotate synchronously through the linkage shaft 8. During the rotation of the gear 9, it will synchronously mesh with the limiting plate 102 inside the transmission composite linkage assembly 10. The limiting plate 102 will move closer to the support plate 101 under the guidance of the support shaft 103 and the elastic traction of the return spring 104.

[0029] After the hydraulic rod 5 outputs and is driven to the designated position, the auxiliary hydraulic rod 11 is activated. The output end of the auxiliary hydraulic rod 11 drives the constraint block 12 until the constraint block 12 reaches between the two limit plates 102. This constrains the displacement of the limit plates 102, causing the two limit plates 102 to engage and limit the two gears 9 respectively. This achieves high-speed limit feedback, fully ensuring the stability of the overall device during use. Furthermore, the auxiliary hydraulic rod 11 can be connected to the existing hydraulic system that controls the hydraulic rod 5.

[0030] Please see Figures 3-6 The other end of the linkage shaft 8 has a splicing groove 14 and a screw hole. The gear 9 has an assembly hole in the middle, and a connecting block 13 that can engage with the splicing groove 14 is fixed in the assembly hole. The connecting block 13 has a limiting screw that can be threaded into the screw hole. Thus, the linkage shaft 8 and the gear 9 are set in a reciprocating disassembly structure, which can be easily replaced when the gear 9 is severely worn.

[0031] If gear 9 experiences severe wear during continued use, simply removing and cleaning the limiting screws between gear 9 and linkage shaft 8 will allow for easy separation of gear 9 and linkage shaft 8. The operation is simple and convenient.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed limiting structure for a hydraulic support, comprising a hydraulic support body, the hydraulic support body comprising a base (1), a shield beam (2), and a top beam (3), one side of the top beam (3) being hinged to the top of the shield beam (2), a hydraulic rod (5) being installed between the top beam (3) and the base (1), a linkage support rod (6) being hinged between the bottom of the shield beam (2) and one side of the top of the base (1), and a front beam (4) being installed on the other side of the top beam (3), characterized in that: The output end of the hydraulic rod (5) and the inner wall of the top beam (3), and the bottom of the hydraulic rod (5) housing and the inner wall of the base (1) are all hinged by pins. Both ends of the pins at the bottom of the hydraulic rod (5) housing pass through the base (1) and are connected to the limiting structure. The limiting structure includes a semi-open support box (7) on the surface of the mounting base (1), a linkage shaft (8) and a gear (9) fitted inside the semi-open support box (7). One end of the linkage shaft (8) is fixed to the end of the pin, and the gear (9) is fitted to the end of the other end of the linkage shaft (8). A composite linkage component (10) is fixedly fitted in the middle of the semi-open support box (7). The side structure of the composite linkage component (10) can mesh with the gear (9) and automatically move after the gear (9) rotates. A limiting output component is fitted in the middle of the semi-open support box (7), and the output structure of the limiting output component can press and limit the composite linkage component (10).

2. The high-speed limiting structure of a hydraulic support according to claim 1, characterized in that: The composite linkage component (10) includes a support plate (101) fixedly sleeved inside the semi-open support box (7) and a limiting plate (102) movably sleeved inside the semi-open support box (7) and in a relative position. The support plate (101) has a support shaft (103) fixed in the middle that can engage with the side structure of one side of the limiting plate (102). A return spring (104) is installed on one side of the limiting plate (102) and the surface of the support plate (101). The other side of the limiting plate (102) is provided with teeth that can mesh with the gear (9).

3. The high-speed limiting structure of a hydraulic support according to claim 2, characterized in that: The number of support shafts (103) is not less than two, and the ends of both ends of the support shafts (103) are set as T-shaped structures.

4. The high-speed limiting structure of a hydraulic support according to claim 2, characterized in that: The number of reset springs (104) is not less than four and they are installed in an evenly distributed manner between the composite linkage assembly (10) and the two limiting plates (102). The inner wall of the semi-open support box (7) is attached to the corresponding side surface of the limiting plate (102), and a protective plate is snapped into the open port of the semi-open support box (7).

5. The high-speed limiting structure of a hydraulic support according to claim 2, characterized in that: Triangular blocks are fixedly fitted inside the bottom of each of the two limiting plates (102), and a limiting guide space is provided between the bottoms of the two limiting plates (102).

6. The high-speed limiting structure of a hydraulic support according to claim 2, characterized in that: The limiting output component includes an auxiliary hydraulic rod (11) and a constraint block (12). The auxiliary hydraulic rod (11) is fitted inside the semi-open support box (7), and the output end of the auxiliary hydraulic rod (11) is connected to the bottom of the constraint block (12) and can automatically drive the constraint block (12) into the limiting guide space.

7. The high-speed limiting structure of a hydraulic support according to claim 6, characterized in that: Both sides of the top of the constraint block (12) are set with rounded corners, and the surface of the constraint block (12) is coated with a wear-resistant coating.

8. The high-speed limiting structure of a hydraulic support according to claim 1, characterized in that: The other end of the linkage shaft (8) has a splicing groove (14) and a screw hole. The gear (9) has an assembly hole in the middle, and a connecting block (13) that can be engaged with the splicing groove (14) is fixed in the assembly hole. The connecting block (13) is fitted with a limiting screw that can be threadedly connected with the screw hole.

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