A hydraulic support pushing device and a hydraulic support

Abstract

The present invention discloses a hydraulic support pushing device and a hydraulic support. The pushing device includes a base, a pushing mechanism, and a push rod. Both ends of the pushing mechanism are respectively hinged to the base and the push rod. A vertical limiting mechanism and a horizontal limiting mechanism are provided on the base. When the push rod moves in the vertical direction, the vertical limiting mechanism is used to limit the moving range of the push rod in the vertical direction. When the push rod moves horizontally driven by the pushing mechanism, the horizontal limiting mechanism is used to limit the moving range of the push rod in the horizontal direction. By providing a vertical limiting mechanism and a horizontal limiting mechanism on the base of the pushing device, the present invention can limit the moving range of the push rod when the push rod moves on the base driven by the pushing mechanism, so as to ensure that the push rod moves in a substantially horizontal state, and prevent the push rod from being lifted by an object located below the push rod to exceed its normal height range.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic supports, and particularly relates to a hydraulic support pushing device and a hydraulic support. Background Art

[0002] The hydraulic support is an important part of the complete set of equipment underground in coal mines. The pushing device of the hydraulic support can realize the function of pushing the scraper conveyor and pulling the hydraulic support. Refer to Figure 1 , the pushing device is located in the middle position inside the base 1a. The pushing device includes a push rod 2a, a pushing jack 3a, a connector 4a, a pin and other components. One end of the pushing jack 3a is connected to the base 1a, and the other end is connected to the tail of the push rod 2a. The tail of the push rod 2a is connected to the pushing jack 3a, and the front part is connected to the connector 4a. The front part of the connector 4a is connected to the scraper conveyor. The pushing device realizes the functions of pushing the push rod 2a and pulling the support by the telescopic movement of the pushing jack 3a. In the prior art, during the movement of the push rod 2a, it is easy to be lifted by an object located below the push rod 2a to exceed its normal height range, resulting in the horizontal offset of the push rod 2a, which further affects the working stability of the push rod 2a. Summary of the Invention

[0003] In view of the above deficiencies of the prior art, the invention provides a hydraulic support pushing device and a hydraulic support. Among them, when the pushing device drives the push rod to move on the base, the moving range of the push rod can be limited to ensure that the push rod moves in a substantially horizontal state, thereby ensuring its normal operation.

[0004] On the one hand, the invention provides a hydraulic support pushing device, including a base, a pushing mechanism and a push rod. The two ends of the pushing mechanism are respectively hinged to the base and the push rod; a vertical limiting mechanism and a horizontal limiting mechanism are arranged on the base. When the push rod moves in the vertical direction, the vertical limiting mechanism is used to limit the moving range of the push rod in the vertical direction; when the push rod moves horizontally driven by the pushing mechanism, the horizontal limiting mechanism is used to limit the moving range of the push rod in the horizontal direction.

[0005] Further, the push rod includes:

[0006] A push rod body, including a hollow rod body welded by a first cover plate, a first main rib, a second cover plate and a second main rib, and a reinforcing rib assembly is arranged inside the hollow rod body;

[0007] A connecting seat, connected to one end of the push rod body for connecting to the connector;

[0008] A first U-shaped seat, connected to the other end of the push rod body for hinging to one end of the pushing mechanism.

[0009] Further, the reinforcing rib assembly includes transverse ribs and longitudinal ribs. The transverse ribs are parallel to the width direction of the push rod body, and the longitudinal ribs are parallel to the length direction of the push rod body.

[0010] Further, the pushing mechanism is a pushing jack. The cylinder body of the pushing jack is hinged to the base, and the piston rod of the pushing jack is hinged to the push rod. When the pushing jack drives the push rod to move, there is an included angle between the piston rod and the push rod.

[0011] Further, the cylinder body of the pushing jack is detachably connected to the base through a first fastening assembly.

[0012] Further, the piston rod of the pushing jack is detachably connected to the push rod through a second fastening assembly.

[0013] Further, the horizontal limiting mechanism includes:

[0014] A first limiting plate is arranged near the hinge joint of the pushing mechanism and the push rod. A first limiting portion that can be in contact connection with the first limiting plate is provided on one side of the push rod close to the base;

[0015] A second limiting plate is arranged near the hinge joint of the pushing mechanism and the base. A second limiting portion that can be in contact connection with the second limiting plate is further provided on one side of the push rod close to the base;

[0016] When the push rod moves horizontally until the first limiting portion contacts the first limiting plate, the push rod stops moving under the cooperation of the first limiting plate and the first limiting portion;

[0017] When the push rod moves horizontally until the second limiting portion contacts the second limiting plate, the push rod stops moving under the cooperation of the second limiting plate and the second limiting portion.

[0018] Further, the vertical limiting mechanism includes:

[0019] A first cross bridge is arranged at one end of the base and above the push rod. When the push rod moves horizontally, the hinge joint of the pushing mechanism and the push rod remains below the first cross bridge;

[0020] A second cross bridge is arranged at the end of the base far from the first cross bridge and above the push rod;

[0021] When the push rod moves vertically and contacts the first cross bridge, the push rod stops moving upward under the restriction of the first cross bridge;

[0022] When the push rod moves vertically and contacts the second cross bridge, the push rod stops moving upward under the restriction of the second cross bridge.

[0023] Furthermore, a contact plate is provided near the hinge joint of the push rod and the pushing mechanism. The contact plate includes an arc segment at one end close to the first cross bridge. When the push rod moves vertically and contacts the first cross bridge, the arc segment on the contact plate contacts the first cross bridge to restrict the push rod from continuing to move upward.

[0024] On the other hand, the present invention provides a hydraulic support, including the hydraulic support pushing device as described above.

[0025] A hydraulic support pushing device and a hydraulic support provided by the present invention can limit the moving range of the push rod when the push rod moves on the base driven by the pushing mechanism by arranging a vertical limiting mechanism and a horizontal limiting mechanism on the base of the pushing device, so as to ensure that the push rod moves in a substantially horizontal state to ensure its normal operation, and prevent the push rod from being lifted by an object located below the push rod to exceed its normal height range, and prevent the push rod from driving the scraper conveyor connected thereto to move beyond its working range.

[0026] Other features and advantages of the present invention will be described in the subsequent description, and, in part, will be obvious from the description, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0027] Next, through the drawings and embodiments, the technical solutions of the present invention will be further described in detail. Description of the Drawings

[0028] The drawings are used to provide a further understanding of the present invention and constitute a part of the description. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0029] Figure 1 It is a schematic structural diagram of a hydraulic support pushing device in the prior art

[0030] Figure 2 It is a schematic structural diagram of a hydraulic support pushing device according to an exemplary embodiment of the present invention;

[0031] Figure 3 It is a top view of a hydraulic support pushing device according to an exemplary embodiment of the present invention;

[0032] Figure 4 It is a schematic structural diagram of a push rod according to an exemplary embodiment of the present invention;

[0033] Figure 5 Perspective view of the push rod according to an exemplary embodiment of the present invention;

[0034] Figure 6 Structural schematic diagram of the base according to an exemplary embodiment of the present invention;

[0035] Figure 7 Structural schematic diagram of the connecting seat according to an exemplary embodiment of the present invention;

[0036] Figure 8 Structural schematic diagram of the first U-shaped seat according to an exemplary embodiment of the present invention;

[0037] Figure 9 Structural schematic diagram of the pushing mechanism according to an exemplary embodiment of the present invention;

[0038] Figure 10 Structural schematic diagram of the connecting head according to an exemplary embodiment of the present invention.

[0039] In the figure:

[0040] 1a - base, 2a - push rod, 3a - pushing jack, 4a - connecting head;

[0041] 1 - base;

[0042] 2 - pushing mechanism, 201 - cylinder block, 202 - piston rod;

[0043] 3 - push rod, 301 - body, 302 - connecting seat, 303 - first U-shaped seat, 3011 - first cover plate, 3012 - first main rib, 3013 - second cover plate, 3014 - second main rib, 3015 - lifting ring seat, 3016 - lifting ring, 3017 - cross rib, 3018 - longitudinal rib;

[0044] 4 - connecting head;

[0045] 5 - first pin shaft;

[0046] 6 - split pin;

[0047] 7 - second pin shaft;

[0048] 8 - second U-shaped seat;

[0049] 9 - third pin shaft;

[0050] 10 - fourth pin shaft;

[0051] 11 - first limiting plate;

[0052] 12 - second limiting plate;

[0053] 13 - first cross bridge;

[0054] 14 - second cross bridge;

[0055] 15 - Contact plate. Detailed implementation manner

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0057] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0058] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0060] A hydraulic support pushing device provided by the present invention, see Figure 2 and 3, including a base 1, a pushing mechanism 2 and a push rod 3. Both ends of the pushing mechanism 2 are hinged to the base 1 and the push rod 3 respectively. A vertical limiting mechanism and a horizontal limiting mechanism are provided on the base 1. When the push rod 3 moves in the vertical direction, the vertical limiting mechanism is used to limit the moving range of the push rod 3 in the vertical direction. When the push rod 3 moves horizontally driven by the pushing mechanism 2, the horizontal limiting mechanism is used to limit the moving range of the push rod 3 in the horizontal direction. By providing a vertical limiting mechanism and a horizontal limiting mechanism on the base 1, when the push rod 3 moves on the base 1 driven by the pushing mechanism 2, the moving range of the push rod 3 can be limited to ensure that the push rod 3 moves in a substantially horizontal state to ensure its normal operation, so as to prevent the push rod 3 from being lifted by an object located below the push rod 3 to exceed its normal height range, and to prevent the push rod 3 from driving the scraper conveyor connected thereto to move beyond its working range.

[0061] As a preferred embodiment, refer to Figure 4 and 5 , the push rod 3 includes a push rod body 301, a connecting seat 302 and a first U-shaped seat 303. The push rod body 301 includes a hollow rod body formed by welding a first cover plate 3011, a first main rib 3012, a second cover plate 3013 and a second main rib 3014, and a reinforcing rib assembly is provided inside the hollow rod body. The connecting seat 302 is connected to one end of the push rod body 301, and the connecting seat 302 is used to connect to the connecting head 4. The first U-shaped seat 303 is connected to the other end of the push rod body 301, and the first U-shaped seat 303 is used to be hinged to one end of the pushing mechanism 2. In this embodiment, the first cover plate 3011, the first main rib 3012, the second cover plate 3013 and the second main rib 3014 can be connected by groove welding or fillet welding, and the first U-shaped seat 303 is also fixedly connected to the first main rib 3012, the second cover plate 3013 and the second main rib 3014 by groove welding or fillet welding. Preferably, the connecting seat 302, the first U-shaped seat 303 and the connecting head 4 are all castings with a weight reduction design, where the weight reduction design includes a hollow design, a hollow-out design, etc., refer to Figure 7 , 8 、10. Among them, the connecting head 4 and the connecting seat 302 are hinged by cooperation of a first pin shaft 5 and a split pin 6, and the connecting head 4 can be connected to the scraper conveyor by a second pin shaft 7. Among them, a lifting ring seat 3015 and a lifting ring 3016 connected to the lifting ring seat 3015 are provided at a position of the first cover plate 3011 close to the connecting seat 302.

[0062] As a preferred embodiment, the reinforcing rib assembly includes a transverse rib 3017 and a longitudinal rib 3018. The transverse rib 3017 is parallel to the width direction of the push rod body 301, and the longitudinal rib 3018 is parallel to the length direction of the push rod body 301. In this embodiment, the push rod body 301 is strengthened by providing the transverse rib 3017 and the longitudinal rib 3018 inside the push rod body 301.

[0063] As a preferred embodiment, the pushing mechanism 2 is a pushing jack. The cylinder block 201 of the pushing jack is hinged to the base 1, and the piston rod 202 of the pushing jack is hinged to the push rod 3. When the pushing jack drives the push rod 3 to move, there is an included angle between the piston rod 202 and the push rod 3. In this embodiment, when the pushing jack drives the push rod 3 to move, there is always a certain angle between the piston rod 202 and the push rod 3. In this way, the force exerted by the pushing jack on the push rod 3 is divided into two component forces, namely the lifting force in the vertical direction and the pushing force in the horizontal direction. Therefore, it is possible to realize the functions of bottom lifting and pushing simultaneously by using one pushing jack.

[0064] Furthermore, the cylinder block 201 of the pushing jack is detachably connected to the base 1 through a first fastening assembly. In this embodiment, the first fastening assembly includes a second U-shaped seat 8 provided on the base 1 and a third pin shaft 9 provided on the cylinder block 201 and hinged to the second U-shaped seat 8, and the connection flexibility between the two is realized by detachably connecting the cylinder block 201 to the base 1.

[0065] Among them, referring to Figure 9 , the piston rod 202 of the pushing jack is detachably connected to the push rod 3 through a second fastening assembly. In this embodiment, the second fastening assembly includes a fourth pin shaft 10 provided on the piston rod 202 and capable of being hinged to the first U-shaped seat 303, and the connection flexibility between the two is realized by detachably connecting the piston rod 202 to the push rod 3.

[0066] As a preferred embodiment, referring to Figure 6, the horizontal limiting mechanism includes a first limiting plate 11 and a second limiting plate 12. The first limiting plate 11 is arranged near the hinge joint of the pushing mechanism 2 and the push rod 3. On the side of the push rod 3 close to the base 1, there is a first limiting portion that can be in contact connection with the first limiting plate 11. The second limiting plate 12 is arranged near the hinge joint of the pushing mechanism 2 and the base 1. On the side of the push rod 3 close to the base 1, there is also a second limiting portion that can be in contact connection with the second limiting plate 12. When the push rod 3 moves horizontally until the first limiting portion contacts the first limiting plate 11, the push rod 3 stops moving under the cooperation of the first limiting plate 11 and the first limiting portion. When the push rod 3 moves horizontally until the second limiting portion contacts the second limiting plate 12, the push rod 3 stops moving under the cooperation of the second limiting plate 12 and the second limiting portion. In this embodiment, the first limiting portion and the second limiting portion are preferably arranged between the first limiting plate 11 and the second limiting plate 12. When the push rod 3 moves horizontally towards the first limiting plate 11 until the first limiting portion contacts the first limiting plate 11, the push rod 3 stops moving further towards the first limiting plate 11 under the cooperation of the first limiting plate 11 and the first limiting portion. When the push rod 3 moves horizontally towards the second limiting plate 12 until the second limiting portion contacts the second limiting plate 12, the push rod 3 stops moving further towards the second limiting plate 12 under the cooperation of the second limiting plate 12 and the second limiting portion.

[0067] Furthermore, the vertical limiting mechanism includes a first cross-bridge 13 and a second cross-bridge 14. The first cross-bridge 13 is arranged at one end of the base 1 and above the push rod 3, and when the push rod 3 moves horizontally, the hinge joint of the pushing mechanism 2 and the push rod 3 remains below the first cross-bridge 13. The second cross-bridge 14 is arranged at the end of the base 1 far from the first cross-bridge 13 and above the push rod 3. When the push rod 3 moves vertically and contacts the first cross-bridge 13, the push rod 3 stops moving further upward under the restriction of the first cross-bridge 13. When the push rod 3 moves vertically and contacts the second cross-bridge 14, the push rod 3 stops moving further upward under the restriction of the second cross-bridge 14. In this embodiment, the first cross-bridge 13 is preferably a box structure welded to the base 1. Through the arrangement of the first cross-bridge 13 and the second cross-bridge 14, the height of the front and rear ends of the push rod 3 being lifted upward can be restricted.

[0068] Wherein, near the hinge joint of the push rod 3 and the pushing mechanism 2, there is a contact plate 15. The contact plate 15 includes an arc segment at one end close to the first cross-bridge 13. When the push rod 3 moves vertically and contacts the first cross-bridge 13, the arc segment on the contact plate 15 contacts the first cross-bridge 13 to restrict the push rod 3 from moving further upward. In this embodiment, the contact plate 15 is connected to the outside of the first U-shaped seat 303 by welding.

[0069] On the other hand, the present invention provides a hydraulic support, including the hydraulic support pushing device as described above.

[0070] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A hydraulic support pushing device, characterized in that, it includes a base (1), a pushing mechanism (2) and a push rod (3). Both ends of the pushing mechanism (2) are respectively hinged to the base (1) and the push rod (3); a vertical limiting mechanism and a horizontal limiting mechanism are provided on the base (1). When the push rod (3) moves in the vertical direction, the vertical limiting mechanism is used to limit the moving range of the push rod (3) in the vertical direction; when the push rod (3) moves horizontally driven by the pushing mechanism (2), the horizontal limiting mechanism is used to limit the moving range of the push rod (3) in the horizontal direction; The horizontal limiting mechanism includes: A first limiting plate (11), arranged near the hinge joint of the pushing mechanism (2) and the push rod (3). A first limiting portion that can be in contact connection with the first limiting plate (11) is provided on one side of the push rod (3) close to the base (1); A second limiting plate (12), arranged near the hinge joint of the pushing mechanism (2) and the base (1). A second limiting portion that can be in contact connection with the second limiting plate (12) is further provided on one side of the push rod (3) close to the base (1); When the push rod (3) moves horizontally to make the first limiting portion contact with the first limiting plate (11), the push rod (3) stops moving under the cooperation of the first limiting plate (11) and the first limiting portion; When the push rod (3) moves horizontally to make the second limiting portion contact with the second limiting plate (12), the push rod (3) stops moving under the cooperation of the second limiting plate (12) and the second limiting portion; The vertical limiting mechanism includes: A first cross-bridge (13), arranged at one end of the base (1) and above the push rod (3), and when the push rod (3) moves horizontally, the hinge joint of the pushing mechanism (2) and the push rod (3) remains below the first cross-bridge (13); A second cross-bridge (14), arranged at the end of the base (1) far from the first cross-bridge (13) and above the push rod (3).

2. The hydraulic support pushing device according to claim 1, characterized in that, The push rod (3) includes: A push rod body (301), including a hollow rod body welded by a first cover plate (3011), a first main rib (3012), a second cover plate (3013) and a second main rib (3014), and a reinforcing rib assembly is arranged inside the hollow rod body; A connecting seat (302), connected to one end of the push rod body (301) for connecting to a connector (4); A first U-shaped seat (303), connected to the other end of the push rod body (301) for hinging to one end of the pushing mechanism (2).

3. The hydraulic support pushing device according to claim 2, characterized in that, The reinforcing rib assembly includes a transverse rib (3017) and a longitudinal rib (3018). The transverse rib (3017) is parallel to the width direction of the push rod body (301), and the longitudinal rib (3018) is parallel to the length direction of the push rod body (301).

4. The hydraulic support pushing device according to claim 1, characterized in that, the pushing mechanism (2) is a pushing jack, the cylinder block (201) of the pushing jack is hinged to the base (1), the piston rod (202) of the pushing jack is hinged to the push rod (3), and when the pushing jack drives the push rod (3) to move, an included angle exists between the piston rod (202) and the push rod (3).

5. The hydraulic support pushing device according to claim 4, characterized in that, the cylinder block (201) of the pushing jack is detachably connected to the base (1) through a first fastening assembly.

6. The hydraulic support pushing device according to claim 4, characterized in that, the piston rod (202) of the pushing jack is detachably connected to the push rod (3) through a second fastening assembly.

7. The hydraulic support pushing device according to claim 1, characterized in that, when the push rod (3) moves vertically and contacts the first cross bridge (13), the push rod (3) stops moving upward under the restriction of the first cross bridge (13); when the push rod (3) moves vertically and contacts the second cross bridge (14), the push rod (3) stops moving upward under the restriction of the second cross bridge (14).

8. The hydraulic support pushing device according to claim 7, characterized in that, a contact plate (15) is provided near the hinge joint of the push rod (3) and the pushing mechanism (2), the contact plate (15) includes an arc section at one end close to the first cross bridge (13), and when the push rod (3) moves vertically and contacts the first cross bridge (13), the arc section on the contact plate (15) contacts the first cross bridge (13) to restrict the push rod (3) from continuing to move upward.

9. A hydraulic support, characterized in that, it includes the hydraulic support pushing device according to any one of claims 1 to 8.

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