Push structure and advance hydraulic support

Abstract

The present invention provides a push structure and an advanced hydraulic support, wherein the push structure includes: a guide seat, which is arranged on a base and abuts against another base; a first telescopic member, one end of which is connected to the guide seat and the other end of which is connected to another base. In the technical solution of the present invention, on the one hand, after fixing one of the bases, the length of the first telescopic member is changed to move the other base, so that the advanced hydraulic support moves forward in steps. The whole process does not need to be connected with other devices or equipment, and the transfer machine will not be pulled down, which is beneficial to improving safety performance; on the other hand, the guide seat can play a guiding role, and to a certain extent, it can avoid the movement interference caused by the small distance between the two bases; furthermore, the guide seat and the first telescopic member are both located between the two bases, which is beneficial to reducing the space occupied by the push structure and can be applied to different working conditions, thereby improving the scope of application.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of support equipment, and in particular to a pushing structure and an advanced hydraulic support. Background Art

[0002] In the related technology, the advanced hydraulic support is used as the supporting equipment for the chute of the comprehensive mining working face. When the working face is pushed forward, the two bases need to be connected to the push jacks on the transfer machine or other equipment to achieve step-by-step forward movement. However, the transfer machines used in some working faces are small in size and light in weight, which is not convenient for assisting the advanced hydraulic support to move forward, or the advanced hydraulic support is prone to pull down the transfer machine during the forward movement. Summary of the invention

[0003] In order to solve at least one of the above technical problems, an object of an embodiment of the present invention is to provide a pushing structure.

[0004] Another object of an embodiment of the present invention is to provide an advanced hydraulic support having the above-mentioned pushing structure.

[0005] To achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention provides a pushing structure for pushing two adjacent bases in an advance hydraulic support, the pushing structure comprising: a guide seat, provided on one of the bases, the guide seat being located between the two bases, the guide seat being against the other base; at least one first telescopic member, located between the two bases, one end of the first telescopic member being connected to the guide seat provided on one of the bases, the other end of the first telescopic member being connected to the other base, and the length direction of the first telescopic member being consistent with the length direction of the base.

[0006] According to the embodiment of the pushing structure provided by the present invention, on the one hand, by setting the first telescopic member, after fixing one of the bases, changing the overall length of the first telescopic member will drive the other base to move, so that the two bases are relatively displaced, and the leading hydraulic support moves forward in steps. The whole process does not need to be connected with other devices or equipment, and the transfer machine will not be pulled down, which is beneficial to improving safety performance; on the other hand, by setting the guide seat, while the first telescopic member drives the two bases to change their relative positions, the guide seat can play a guiding role, and to a certain extent, it can avoid the distance between the two bases being too small to cause motion interference; furthermore, the guide seat and the first telescopic member are both located between the two bases, which is beneficial to reducing the space occupied by the pushing structure, and can be applied to different working conditions, thereby improving the scope of application.

[0007] Specifically, the pushing structure is used to push two adjacent bases in the advance hydraulic support. It can be understood that the pushing structure can cause the two bases in the advance hydraulic support to be relatively displaced, thereby realizing the step-by-step forward movement of the advance hydraulic support. There are two bases, which are arranged side by side and have the same length direction. In other words, the center lines of the two bases are parallel to each other. The pushing structure includes a guide seat and a first telescopic member. Among them, the guide seat is arranged on one of the two bases, and the guide seat is located between the two bases, and the guide seat is against the other base. Further, the first telescopic member is located between the two bases. One end of the first telescopic member is connected to the base arranged on one of the bases, and the other end of the first telescopic member is connected to the other base. In other words, one end of the first telescopic member is connected to one of the two bases through the guide seat, and the other end is connected to the other of the two bases. Specifically, the first telescopic member is a push jack or a hydraulic cylinder. The first telescopic member includes a first cylinder body and a first piston rod. The first piston in the first piston rod is arranged inside the first cylinder body, and the first piston separates the inner cavity of the first cylinder body into a first rodless cavity and a first rod cavity. The first rod cavity is a part of the inner cavity of the first cylinder body where the first piston rod is arranged. The staff manipulates the electro-hydraulic reversing valve to control the working medium in the hydraulic system to flow into or out of the first rodless cavity and the first rod cavity, so that the first telescopic member completes the telescopic action. The end of the first cylinder body away from the first piston rod is connected to one of the bases, and the end of the first piston rod away from the first piston is connected to the other base. During the working process, one of the bases is fixed, and then the first telescopic member is pushed, that is, the overall length of the first telescopic member is lengthened, and then the other base will move under the drive of the first telescopic member, and relative movement will occur between the two bases; the base after the position is moved is fixed, and then the first telescopic member is retracted, that is, the overall length of the first telescopic member is shortened, and then the previously fixed base will move under the drive of the first telescopic member. By repeating the above two steps, the advanced hydraulic support can move forward in a step-by-step manner. Since the guide seat is located between the two bases and the guide seat is against the other base, when the first telescopic member drives the two bases to change their relative positions, the guide seat can play a guiding role, which can avoid the movement interference caused by the small distance between the two bases to a certain extent.

[0008] Furthermore, the length direction of the first telescopic member is consistent with the length direction of the base, which can avoid motion interference when the push structure moves forward, and is conducive to controlling the forward direction.

[0009] Normally, the push structure is a part of the advance hydraulic support. As the supporting equipment for the chute of the comprehensive mining working face, the advance hydraulic support is currently commonly used with a central structure, that is, the advance hydraulic support is divided into two rows, and the two rows are respectively arranged on both sides of the transfer machine. When the advance hydraulic support steps forward, the base in the push structure needs to be displaced with the assistance of the telescopic parts of other parts or equipment. The transfer machines used in some working faces are small in size and light in weight, which is not convenient for assisting the advance hydraulic support to move forward, or the advance hydraulic support is prone to pull down the transfer machine during the forward process.

[0010] In the present application, the first telescopic member is arranged between the two bases, which is beneficial to reducing the volume of the push structure, and the push structure does not need to be connected to other devices or equipment, so that the advanced hydraulic support can be moved forward in a step-by-step manner. In addition, the push structure in the technical solution of the present application also has the advantages of simple structure and easy installation.

[0011] It should be noted that the number of the first telescopic members is at least one, that is, the first telescopic members can be one, two or more. When there are two or more first telescopic members, the length directions of different first telescopic members are consistent to avoid motion interference during the forward movement. The pushing directions of the first telescopic members can be all the same or different, and can be flexibly set according to actual needs.

[0012] In addition, the above technical solution provided by the present invention may also have the following additional technical features:

[0013] The above technical solution also includes: at least one second telescopic member, one end of the second telescopic member is connected to one of the bases, the other end of the second telescopic member is connected to the other base, and the second telescopic member can rotate relative to the base.

[0014] In this technical solution, the push structure also includes at least one second telescopic member. Specifically, one end of the second telescopic member is connected to one of the bases, and the other end of the second telescopic member is connected to the other base. The second hydraulic member can rotate relative to the base. It can be understood that the two bases in the push structure are connected by the second hydraulic member, and the two bases move forward alternately under the action of the first hydraulic member pushing and retracting. The angle between the second hydraulic member and the base changes continuously to avoid motion interference during the advancement of the two bases. Specifically, the second hydraulic member is a push jack or a hydraulic cylinder. The second hydraulic member includes a second cylinder body and a second piston rod. The second piston in the second piston rod is arranged inside the second cylinder body, and the second piston separates the inner cavity of the second cylinder body into a second rodless cavity and a second rod cavity. The second rod cavity is the part of the inner cavity of the second cylinder body where the second piston rod is arranged. The staff operates the electro-hydraulic reversing valve to control the working medium in the hydraulic system to flow into or out of the second rodless cavity and the second rod cavity, so that the second hydraulic member completes the telescopic action. By setting up the second hydraulic component, during the process of the two bases in the pushing structure moving forward alternately, the distance between the two bases can be adjusted to ensure a safe distance between the two bases, thereby protecting the first hydraulic component arranged between the two bases and increasing its service life.

[0015] Furthermore, the number of the second hydraulic component is at least one, that is, the second hydraulic component may be one, two or more. Taking into account the cost, the convenience of regulation and other factors, the second hydraulic component is flexibly arranged according to actual needs.

[0016] The above technical solution also includes: a reinforcing block, one side wall of the reinforcing block is connected to the guide seat, and the other side wall of the reinforcing block is connected to the base.

[0017] In this technical solution, the push structure further includes a reinforcement block. Specifically, one side wall of the reinforcement block is connected to the guide seat, and the other side wall is connected to the base provided with the guide seat. In other words, the reinforcement block is connected to both the guide seat and the base at the same time. By providing the reinforcement block, the connection strength between the guide seat and the base can be improved, thereby improving the service life of the push structure.

[0018] It is worth mentioning that the reinforcing block, the guide seat and the base can be separate structures connected by welding; the three can also be an integrated structure, which has good mechanical properties and higher connection strength compared to the post-processing method, which is conducive to reducing the number of parts, thereby reducing the installation process and improving installation efficiency.

[0019] In the above technical solution, there are multiple reinforcement blocks, and the multiple reinforcement blocks are arranged along the circumference of the guide seat.

[0020] In this technical solution, by setting the number of reinforcement blocks to be multiple and arranging the multiple reinforcement blocks along the circumference of the guide seat, it is beneficial to further improve the connection strength between the guide seat and the base. Since the pushing direction of the first telescopic member is consistent with the length direction of the base, the guide seat will be subjected to pressure along the length direction of the base during the pushing process of the first telescopic member, so that the guide seat will tend to rotate relative to the base. Arranging the two reinforcement blocks along the length direction of the base is beneficial to improving the reinforcement effect and greatly reducing the possibility of the guide seat breaking under pressure.

[0021] The above technical solution also includes: a first connecting structure connected to a guide seat arranged on one of the bases; a second connecting structure connected to the other base, the second connecting structure is located between the two bases, one end of the first telescopic member is connected to the first connecting structure, and the other end is connected to the second connecting structure.

[0022] In this technical solution, the push structure also includes a first connection structure and a second connection structure. Specifically, the guide seat is provided on one base, the second connection structure is provided on the other base, and the guide seat and the second connection structure are both located between the two bases. By providing the guide seat, the spacing between the two bases that move forward alternately can be controlled, and the bases can be limited to avoid damage to the first telescopic member due to the small distance between the two bases during the forward movement; in addition, the guide seat can also guide the base during the forward movement.

[0023] Furthermore, the first connecting structure is arranged on the guide seat, one end of the first telescopic member is connected to the first connecting structure, and the other end is connected to the second connecting structure. By connecting the two ends of the first telescopic member to the two connecting structures respectively, the length direction of the first telescopic member can be consistent with the length direction of the two bases. During the working process, one of the bases is fixed, and then the other base is moved under the drive of the first telescopic member, and the two bases move relative to each other; the base after the position is moved is fixed, and then the previously fixed base will move under the drive of the first telescopic member. Repeating the above two steps, the advanced hydraulic support can complete the step-by-step forward movement.

[0024] It is worth noting that the base and the guide seat, the guide seat and the first connecting structure, and the base and the second connecting structure can be a split structure; or an integrated structure. Compared with the post-processing method, it has good mechanical properties and higher connection strength, which is conducive to reducing the number of parts, thereby reducing the installation process and improving installation efficiency. In addition, when the number of the first telescopic members is two or more, the number of the guide seats, the first connecting structure, and the second connecting structure will also change accordingly. By setting two or more guide seats, the effect of limiting and guiding can be improved.

[0025] In the above technical solution, there are two first telescopic members, which are arranged in parallel. There are two guide seats, one of which is connected to one base, and the other is connected to the other base. The two ends of each first telescopic member are respectively connected to a corresponding guide seat and the base, and the pushing directions of the two first telescopic members are opposite.

[0026] In this technical solution, by setting the number of the first telescopic members to two, when the leading hydraulic support moves forward in a step-by-step manner, two push jacks act simultaneously, resulting in a larger frame moving force and a faster speed. Compared with the method of setting more than two first telescopic members, this can reduce costs and improve the convenience of operation.

[0027] Furthermore, the two first telescopic members are arranged in parallel to avoid motion interference. There are two guide seats, one of which is connected to one base, and the other guide seat is connected to the other base, and the two ends of each first telescopic member are respectively connected to a corresponding guide seat and the base. The pushing directions of the two first telescopic members are opposite. In other words, in the two bases, each base will be connected to the end of the first cylinder body of one of the first telescopic members, and connected to the end of the first piston rod of the other first telescopic member. By having the two first telescopic members have opposite pushing directions, it is possible to avoid excessive pressure being applied to one base at the same time, and the stress will not be too concentrated, which is beneficial to improving the service life of the push structure.

[0028] In the above technical solution, it also includes: at least two third connecting structures, at least one third connecting structure is arranged on one base, and at least one third connecting structure is arranged on another base, the third connecting structure includes: a mounting seat, connected to the base; a rotating member, one end of the rotating member extends into the mounting seat, and the other end of the rotating member is connected to the end of the second telescopic member; the second telescopic member can rotate relative to the base through the third connecting structure.

[0029] In this technical solution, the push structure further includes at least two third connection structures. Specifically, at least one third connection structure is provided on one of the two bases, and at least one third connection structure is provided on the other of the two bases. It can be understood that when the number of the third connection structures is two, one of the third connection structures is provided on one base, and the other third connection structure is provided on the other base.

[0030] Further, the third connection structure includes a mounting seat and a rotating member. Specifically, the mounting seat is connected to the base. One end of the rotating member extends into the mounting seat, and the other end of the rotating member is connected to the end of the second telescopic member. The rotating member can rotate relative to the mounting seat. In other words, the rotating member is rotatably connected to the mounting seat, and the second telescopic member can rotate relative to the base through the third connection structure. In the process of the two bases moving forward alternately, the second telescopic member can continuously adjust the angle between the second telescopic member and the base to avoid motion interference.

[0031] In the above technical solution, the number of third connecting structures is four, of which two third connecting structures are arranged at the two ends of a base in the length direction, and the other two third connecting structures are arranged at the two ends of the length direction of another base. The number of second telescopic parts is two, one end of each second telescopic part is connected to a third connecting structure on a base, and the other end of the second telescopic part is connected to a third connecting structure on another base, and the two third connecting structures connected to the same second telescopic part are adjacent.

[0032] In this technical solution, by setting the number of the second telescopic members to two, the distance between the two bases can be adjusted to avoid the distance between the two bases in the push structure becoming smaller during the process of alternately moving forward, thereby preventing the first telescopic member from being damaged. Compared with the method of setting only one second telescopic member, the two second telescopic members can improve the adjustment accuracy; compared with the method of setting more than two second telescopic members, the cost can be reduced. Furthermore, the length directions of the two second telescopic members are the same, which can avoid motion interference.

[0033] It is worth noting that the two second telescopic members can be respectively arranged at positions close to the two ends of the base, that is, the two ends of the second telescopic member are respectively connected to the ends of the two bases or positions close to the ends, which is conducive to improving the adjustment effect.

[0034] In the above technical solution, the first connection structure is a first connection ear; and / or the second connection structure is a second connection ear, and the second connection ear is located between the two bases.

[0035] In this technical solution, the end of the first telescopic member is connected to the first connecting ear by setting the first connecting structure as the first connecting ear. Usually, there are two first connecting ears, that is, two first connecting ears are arranged on the guide seat, and there is a certain distance between the two first connecting ears, a part of the end of the first telescopic member is arranged between the two first connecting ears, and then the first telescopic member and the first connecting ear are detachably connected by a bolt.

[0036] Furthermore, the second connection structure is a second connection ear, the end of the second telescopic member is connected to the second connection ear, and the second connection ear is located between the two bases. Usually, the number of the second connection ears is two, that is, two second connection ears are arranged on the base, and there is a certain distance between the two second connection ears, a certain part of the end of the first telescopic member is arranged between the two second connection ears, and then the first telescopic member and the second connection ear are detachably connected by a bolt. Since the second connection ear is located between the two bases, it is beneficial to reduce the size of the space occupied by the push structure.

[0037] An embodiment of the second aspect of the present invention provides an advanced hydraulic support, comprising: two bases; a pushing structure in any of the above embodiments, wherein a guide seat in the pushing structure is arranged on one of the bases, one end of a first telescopic member in the pushing structure is connected to the guide seat, and the other end of the first telescopic member is connected to the other base; two top beam structures, each top beam structure is connected to one base.

[0038] According to an embodiment of the advanced hydraulic support of the present invention, the advanced hydraulic support includes two bases, two top beam structures and a push structure. Specifically, the guide seat in the push structure is arranged on one of the bases, and the guide seat can be against the other base. When the relative positions of the two bases change, the guide seat can play a guiding role, and to a certain extent, it can avoid the movement interference caused by the small spacing between the two bases. One end of the first telescopic member in the push structure is connected to the guide seat, and the other end is connected to a base without a guide seat. When the first telescopic member pushes or retracts, it can drive the relative positions of the two bases to change, so as to realize the step-by-step forward movement of the advanced hydraulic support.

[0039] Furthermore, each top beam structure is connected to the corresponding base via at least two columns. The distance between the top beam structure and the base can be adjusted by extending and retracting the columns, thereby meeting different working conditions and expanding the scope of application.

[0040] Among them, since the advanced hydraulic support includes any of the pushing structures in the first aspect mentioned above, it has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0041] Additional aspects and advantages of embodiments of the present invention will become apparent in the following description or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a pushing structure according to an embodiment of the present invention is shown;

[0043] Figure 2 A schematic diagram showing a pushing structure according to another embodiment of the present invention is shown;

[0044] Figure 3 A schematic structural diagram of a base according to an embodiment of the present invention is shown;

[0045] Figure 4 A schematic structural diagram of a first telescopic member according to an embodiment of the present invention is shown;

[0046] Figure 5 A schematic structural diagram of an advanced hydraulic support according to an embodiment of the present invention is shown;

[0047] Figure 6 A side view of an advanced hydraulic support according to an embodiment of the present invention is shown;

[0048] Figure 7 A schematic structural diagram of an advanced hydraulic support according to another embodiment of the present invention is shown.

[0049] in, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names is as follows:

[0050] 100: sliding structure; 110: base; 120: first telescopic member; 130: second telescopic member; 141: guide seat; 142: first connecting structure; 143: second connecting structure; 144: mounting seat; 145: reinforcing block; 146: third connecting structure; 147: rotating member; 200: advanced hydraulic support; 210: top beam structure; 230: column. DETAILED DESCRIPTION

[0051] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0053] Refer to the following Figures 1 to 7 The pushing structure 100 and the advanced hydraulic support 200 provided according to some embodiments of the present invention are described.

[0054] Embodiment 1

[0055] like Figure 1 and Figure 2As shown, a push structure 100 provided by an embodiment of the present invention is used to push two adjacent bases 110 in the advanced hydraulic support 200. It can be understood that the push structure 100 can cause the two bases 110 in the advanced hydraulic support 200 to have relative displacement, thereby realizing the step-by-step forward movement of the advanced hydraulic support 200. There are two bases 110, and the two bases 110 are arranged in parallel and the length directions of the two are consistent. In other words, the center lines of the two bases 110 are parallel to each other. The push structure 100 includes a guide seat 141 and a first telescopic member 120. Among them, the guide seat 141 is arranged on one of the two bases 110, and the guide seat 141 is located between the two bases 110, and the guide seat 141 is against the other base 110. Further, the first telescopic member 120 is located between the two bases 110. One end of the first telescopic member 120 is connected to the base 110 arranged on one of the bases 110, and the other end of the first telescopic member 120 is connected to the other base 110. In other words, one end of the first telescopic member 120 is connected to one of the two bases 110 through the guide seat 141, and the other end is connected to the other of the two bases 110. Figure 4 As shown, the first telescopic member 120 is a push jack or a hydraulic cylinder. The first telescopic member 120 includes a first cylinder body and a first piston rod. The first piston in the first piston rod is arranged inside the first cylinder body, and the first piston separates the inner cavity of the first cylinder body into a first rodless cavity and a first rod cavity. The first rod cavity is the part of the inner cavity of the first cylinder body where the first piston rod is arranged. The staff operates the electro-hydraulic reversing valve to control the working medium in the hydraulic system to flow into or out of the first rodless cavity and the first rod cavity, so that the first telescopic member 120 completes the telescopic action. The end of the first cylinder body away from the first piston rod is connected to one of the bases 110, and the end of the first piston rod away from the first piston is connected to the other base 110. During operation, one of the bases 110 is fixed, and then the first telescopic member 120 is pushed, that is, the overall length of the first telescopic member 120 becomes longer, and then the other base 110 will move under the drive of the first telescopic member 120, and relative movement will occur between the two bases 110; the base 110 after the position is moved is fixed, and then the first telescopic member 120 is retracted, that is, the overall length of the first telescopic member 120 becomes shorter, and then the previously fixed base 110 will move under the drive of the first telescopic member 120. Repeating the above two steps, the advanced hydraulic support 200 can complete the step-by-step forward movement. Since the guide seat 141 is located between the two bases 110, and the guide seat 141 is against the other base 110, when the first telescopic member 120 drives the two bases 110 to change their relative positions, the guide seat 141 can play a guiding role, which can avoid the distance between the two bases 110 being too small to cause motion interference to a certain extent.

[0056] Furthermore, the length direction of the first telescopic member 120 is consistent with the length direction of the base 110, which can avoid motion interference when the push structure 100 moves forward, and is conducive to controlling the forward direction.

[0057] Normally, the push structure 100 is a part of the advance hydraulic support 200. The advance hydraulic support 200 is used as a supporting device for the chute of the comprehensive mining working face. At present, the middle-mounted structure is commonly used, that is, the advance hydraulic support 200 is divided into two rows, and the two rows are respectively arranged on both sides of the transfer machine. When the advance hydraulic support 200 steps forward, the base 110 in the push structure 100 needs to be displaced with the assistance of the telescopic parts of other parts or equipment. The transfer machines used in some working faces are small in size and light in weight, which is not convenient for assisting the advance hydraulic support 200 to push forward, or the advance hydraulic support 200 is prone to pull down the transfer machine during the forward process.

[0058] In the present application document, by arranging the first telescopic member 120 between the two bases 110, it is helpful to reduce the volume of the push structure 100, and the push structure 100 does not need to be connected to other devices or equipment, so as to achieve the step-by-step forward movement of the advanced hydraulic support 200. In addition, the push structure 100 in the technical solution of the present application also has the advantages of simple structure and easy installation.

[0059] It should be noted that the number of the first telescopic member 120 is at least one, that is, the first telescopic member 120 can be one, two or more. When there are two or more first telescopic members 120, the length directions of different first telescopic members 120 are consistent to avoid motion interference during the forward movement. The pushing directions of the first telescopic members 120 can be all the same or different, and can be flexibly set according to actual needs.

[0060] According to the embodiment of the pushing structure 100 provided by the present invention, on the one hand, by setting the first telescopic member 120, after fixing one of the bases 110, changing the overall length of the first telescopic member 120 will drive the other base 110 to move, so that the two bases 110 are relatively displaced, and the leading hydraulic support 200 moves forward in steps. The whole process does not need to be connected with other devices or equipment, and the transfer machine will not be pulled down, which is beneficial to improving safety performance; on the other hand, by setting the guide seat 141, while the first telescopic member 120 drives the two bases 110 to change their relative positions, the guide seat 141 can play a guiding role, which can avoid the distance between the two bases 110 being too small to cause motion interference to a certain extent; furthermore, the guide seat 141 and the first telescopic member 120 are both located between the two bases 110, which is beneficial to reducing the space occupied by the pushing structure 100, and can be applied to different working conditions, thereby improving the scope of application.

[0061] Furthermore, if Figure 1 and Figure 2 As shown, the push structure 100 also includes at least one second telescopic member 130. Specifically, one end of the second telescopic member 130 is connected to one of the bases 110, and the other end of the second telescopic member 130 is connected to the other base 110. The second hydraulic member can rotate relative to the base 110. It can be understood that the two bases 110 in the push structure 100 are connected by the second hydraulic member, and the two bases 110 alternately advance under the action of the first hydraulic member pushing and retracting, and the angle between the second hydraulic member and the base 110 changes continuously to avoid motion interference during the advancement of the two bases 110. Specifically, the second hydraulic member is a push jack or a hydraulic cylinder, and the second hydraulic member includes a second cylinder body and a second piston rod. The second piston in the second piston rod is arranged inside the second cylinder body, and the second piston separates the inner cavity of the second cylinder body into a second rodless cavity and a second rod cavity, and the second rod cavity is a portion of the inner cavity of the second cylinder body where the second piston rod is arranged. The staff manipulates the electro-hydraulic reversing valve to control the working medium in the hydraulic system to flow into or out of the second rodless cavity and the second rod cavity, so that the second hydraulic member completes the telescopic action. By setting up the second hydraulic component, during the process of the two bases 110 in the pushing structure 100 moving forward alternately, the distance between the two bases 110 can be adjusted to ensure a safe distance between the two bases 110, thereby protecting the first hydraulic component arranged between the two bases 110 and improving its service life.

[0062] Furthermore, the number of the second hydraulic component is at least one, that is, the second hydraulic component may be one, two or more. Taking into account the cost, the convenience of regulation and other factors, the second hydraulic component is flexibly arranged according to actual needs.

[0063] Furthermore, if Figure 2 and Figure 3 As shown, the push structure 100 also includes a first connection structure 142 and a second connection structure 143. Specifically, the guide seat 141 is provided on one base 110, the second connection structure 143 is provided on the other base 110, and the guide seat 141 and the second connection structure 143 are both located between the two bases 110. By providing the guide seat 141, the spacing between the two bases 110 that move forward alternately can be controlled, and the bases 110 can be limited to avoid damage to the first telescopic member 120 due to the small distance between the two bases 110 during the forward movement; in addition, the guide seat 141 can also guide the bases 110 during the forward movement.

[0064] Furthermore, the first connecting structure 142 is disposed on the guide seat 141, and one end of the first telescopic member 120 is connected to the first connecting structure 142, and the other end is connected to the second connecting structure 143. By connecting the two ends of the first telescopic member 120 to the two connecting structures respectively, the length direction of the first telescopic member 120 can be consistent with the length direction of the two bases 110. During operation, one of the bases 110 is fixed, and then the other base 110 is moved under the drive of the first telescopic member 120, and relative movement occurs between the two bases 110; the base 110 after the position is moved is fixed, and then the previously fixed base 110 will move under the drive of the first telescopic member 120. Repeating the above two steps, the advanced hydraulic support 200 can complete the step-by-step forward movement.

[0065] It is worth noting that the base 110 and the guide seat 141, the guide seat 141 and the first connecting structure 142, and the base 110 and the second connecting structure 143 can be a split structure; or an integrated structure, which has good mechanical properties and higher connection strength compared to the post-processing method, which is conducive to reducing the number of parts, thereby reducing the installation process and improving the installation efficiency. In addition, when the number of the first telescopic members 120 is two or more, the number of the guide seat 141, the first connecting structure 142 and the second connecting structure 143 will also change accordingly. By setting two or more guide seats 141, the effect of limiting and guiding can be improved.

[0066] Embodiment 2

[0067] like Figure 1 and Figure 2 As shown, a push structure 100 provided by an embodiment of the present invention includes a base 110, a first telescopic member 120 and a second telescopic member 130. There are two bases 110, and the two bases 110 are arranged in parallel and have the same length direction. In other words, the center lines of the two bases 110 are parallel to each other. Furthermore, both ends of the first telescopic member 120 are respectively connected to the two bases 110. In other words, one end of the first telescopic member 120 is connected to one of the two bases 110, and the other end is connected to the other base 110. Specifically, as Figure 4As shown, the first telescopic member 120 is a push jack or a hydraulic cylinder. The first telescopic member 120 includes a first cylinder body and a first piston rod. The first piston in the first piston rod is arranged inside the first cylinder body, and the first piston separates the inner cavity of the first cylinder body into a first rodless cavity and a first rod cavity. The first rod cavity is the part of the inner cavity of the first cylinder body where the first piston rod is arranged. The staff operates the electro-hydraulic reversing valve to control the working medium in the hydraulic system to flow into or out of the first rodless cavity and the first rod cavity, so that the first telescopic member 120 completes the telescopic action. The end of the first cylinder body away from the first piston rod is connected to one of the bases 110, and the end of the first piston rod away from the first piston is connected to the other base 110. During the working process, one of the bases 110 is fixed, and then the first telescopic member 120 is pushed, that is, the overall length of the first telescopic member 120 becomes longer, and then the other base 110 will move under the drive of the first telescopic member 120, and the two bases 110 will move relative to each other; the base 110 after the position is moved is fixed, and then the first telescopic member 120 is retracted, that is, the overall length of the first telescopic member 120 becomes shorter, and then the previously fixed base 110 will move under the drive of the first telescopic member 120. Repeating the above two steps, the advanced hydraulic support 200 can complete the step-by-step forward movement.

[0068] Furthermore, the length direction of the first telescopic member 120 is consistent with the length direction of the base 110, which can avoid motion interference when the push structure 100 moves forward, and is conducive to controlling the forward direction.

[0069] Normally, the push structure is a part of the advance hydraulic support 200. The advance hydraulic support 200 is used as a supporting device for the chute of the comprehensive mining working face. Currently, the center-mounted structure is commonly used, that is, the advance hydraulic support 200 is divided into two rows, and the two rows are respectively arranged on both sides of the transfer machine. When the advance hydraulic support 200 steps forward, the base 110 in the push structure needs to be displaced with the assistance of the telescopic parts of other parts or equipment. The transfer machines used in some working faces are small in size and light in weight, which is not convenient for assisting the advance hydraulic support 200 to push forward, or the advance hydraulic support 200 is prone to pull down the transfer machine during the forward process.

[0070] In the present application document, by arranging the first telescopic member 120 between the two bases 110, it is helpful to reduce the volume of the push structure, and the push structure 100 does not need to be connected to other devices or equipment, so as to achieve the step-by-step forward movement of the advanced hydraulic support 200. In addition, the push structure 100 in the technical solution of the present application also has the advantages of simple structure and easy installation.

[0071] It should be noted that the number of the first telescopic member 120 is at least one, that is, the first telescopic member 120 can be one, two or more. When there are two or more first telescopic members 120, the length directions of different first telescopic members 120 are consistent to avoid motion interference during the forward movement. The pushing directions of the first telescopic members 120 can be all the same or different, and can be flexibly set according to actual needs.

[0072] Furthermore, if Figure 1 and Figure 2 As shown, the two ends of the second telescopic member 130 are connected to the two bases 110 respectively, that is, one end of the second telescopic member 130 is connected to one of the two bases 110, and the other end is connected to the other base 110. The second telescopic member 130 can rotate relative to the base 110, which can be understood as that the two bases 110 in the push structure are connected by the second telescopic member 130, and the two bases 110 alternately move forward under the action of the first telescopic member 120 pushing and retracting, and the angle between the second telescopic member 130 and the base 110 changes continuously, avoiding motion interference during the advancement of the two bases 110. Specifically, the second telescopic member 130 is a push jack or a hydraulic cylinder, and the second telescopic member 130 includes a second cylinder body and a second piston rod, and the second piston in the second piston rod is arranged inside the second cylinder body, and the second piston separates the inner cavity of the second cylinder body into a second rodless cavity and a second rod cavity, and the second rod cavity is the part of the inner cavity of the second cylinder body where the second piston rod is arranged. The staff manipulates the electro-hydraulic reversing valve to control the working medium in the hydraulic system to flow into or out of the second rodless chamber and the second rod chamber, so that the second telescopic member 130 completes the telescopic action. By providing the second telescopic member 130, during the process of the two bases 110 in the push structure moving forward alternately, the spacing between the two bases 110 can be adjusted to ensure a safe distance between the two bases 110, thereby protecting the first telescopic member 120 disposed between the two bases 110 and improving its service life.

[0073] Further, the number of the second telescopic member 130 is at least one, that is, the second telescopic member 130 can be one, two or more. Considering the cost, the convenience of regulation and other factors, the second telescopic member 130 is flexibly arranged according to actual needs.

[0074] In another embodiment, the first connecting structure 142 is a first connecting ear. By setting the first connecting structure 142 as the first connecting ear, the end of the first telescopic member 120 is connected to the first connecting ear. Usually, the number of the first connecting ears is two, that is, two first connecting ears are arranged on the guide seat 141, and there is a certain distance between the two first connecting ears, a certain part of the end of the first telescopic member 120 is arranged between the two first connecting ears, and then the first telescopic member 120 is detachably connected to the first connecting ear by a bolt member.

[0075] In another embodiment, the second connecting structure 143 is a second connecting ear, and the end of the second telescopic member 130 is connected to the second connecting ear, and the second connecting ear is located between the two bases 110. Usually, the number of the second connecting ears is two, that is, the two second connecting ears are arranged on the base 110, and there is a certain distance between the two second connecting ears, a part of the end of the first telescopic member 120 is arranged between the two second connecting ears, and then the first telescopic member 120 is detachably connected to the second connecting ear by a bolt. Since the second connecting ear is located between the two bases 110, it is beneficial to reduce the size of the space occupied by the push structure 100.

[0076] Embodiment 3

[0077] like Figure 1 , Figure 2 and Figure 3 As shown, the push structure 100 also includes a guide seat 141, a first connection structure 142 and a second connection structure 143. Specifically, the guide seat 141 is provided on one base 110, the second connection structure 143 is provided on the other base 110, and the guide seat 141 and the second connection structure 143 are both located between the two bases 110. By providing the guide seat 141, the spacing between the two bases 110 that move forward alternately can be controlled, and the bases 110 can be limited to avoid damage to the first telescopic member 120 due to the small distance between the two bases 110 during the forward movement; in addition, the guide seat 141 can also guide the bases 110 during the forward movement.

[0078] Furthermore, the first connecting structure 142 is disposed on the guide seat 141, and one end of the first telescopic member 120 is connected to the first connecting structure 142, and the other end is connected to the second connecting structure 143. By connecting the two ends of the first telescopic member 120 to the two connecting structures respectively, the length direction of the first telescopic member 120 can be consistent with the length direction of the two bases 110. During operation, one of the bases 110 is fixed, and then the other base 110 is moved under the drive of the first telescopic member 120, and relative movement occurs between the two bases 110; the base 110 after the position is moved is fixed, and then the previously fixed base 110 will move under the drive of the first telescopic member 120. Repeating the above two steps, the advanced hydraulic support 200 can complete the step-by-step forward movement.

[0079] It is worth noting that the base 110 and the guide seat 141, the guide seat 141 and the first connecting structure 142, and the base 110 and the second connecting structure 143 can be a split structure; or an integrated structure, which has good mechanical properties and higher connection strength compared to the post-processing method, which is conducive to reducing the number of parts, thereby reducing the installation process and improving the installation efficiency. In addition, when the number of the first telescopic members 120 is two or more, the number of the guide seat 141, the first connecting structure 142 and the second connecting structure 143 will also change accordingly. By setting two or more guide seats 141, the effect of limiting and guiding can be improved.

[0080] In another embodiment, Figure 2 and Figure 3 As shown, the push structure 100 further includes a reinforcing block 145. Specifically, one side wall of the reinforcing block 145 is connected to the guide seat 141, and the other side wall is connected to the base 110 provided with the guide seat 141. In other words, the reinforcing block 145 is connected to both the guide seat 141 and the base 110 at the same time. By providing the reinforcing block 145, the connection strength between the guide seat 141 and the base 110 can be improved, thereby improving the service life of the push structure.

[0081] It is worth noting that the reinforcing block 145, the guide seat 141 and the base 110 can be separate structures connected by welding; the three can also be an integrated structure, which has good mechanical properties and higher connection strength compared to the post-processing method, which is conducive to reducing the number of parts, thereby reducing the installation process and improving installation efficiency.

[0082] Furthermore, there are multiple reinforcement blocks 145, and the multiple reinforcement blocks 145 are arranged along the circumference of the guide seat 141, which is conducive to further improving the connection strength between the guide seat 141 and the base 110. Since the pushing direction of the first telescopic member 120 is consistent with the length direction of the base 110, the guide seat 141 will be subjected to pressure along the length direction of the base 110 during the pushing process of the first telescopic member 120, so that the guide seat 141 will tend to rotate relative to the base 110. Arranging the two reinforcement blocks 145 along the length direction of the base 110 is conducive to improving the reinforcement effect and greatly reducing the possibility of the guide seat 141 breaking under pressure.

[0083] Embodiment 4

[0084] like Figure 1 and Figure 2As shown, there are two first telescopic members 120. By setting the number of the first telescopic members 120 to two, when the advanced hydraulic support 200 moves forward in a step-by-step manner, two push jacks act simultaneously, and the moving force is large and the speed is fast. Compared with the method of setting more than two first telescopic members 120, it can reduce costs and improve the convenience of operation.

[0085] Further, the length directions of the two first telescopic members 120 are the same, and motion interference can be avoided. The number of guide seats 141 is two, wherein one guide seat 141 is connected to one base 110, and the other guide seat 141 is connected to the other base 110, and the two ends of each first telescopic member 120 are respectively connected to a corresponding guide seat 141 and the base 110. The pushing directions of the two first telescopic members 120 are opposite. In other words, in the two bases 110, each base 110 will be connected to the end of the first cylinder body of one of the first telescopic members 120, and connected to the end of the first piston rod of the other first telescopic member 120. By having the two first telescopic members 120 push in opposite directions, it is possible to avoid excessive pressure applied to one base 110 at the same time, and the stress will not be too concentrated, which is conducive to improving the service life of the push structure 100.

[0086] Embodiment 5

[0087] like Figure 1 and Figure 2 As shown, the push structure 100 further includes at least two third connection structures 146. Specifically, at least one third connection structure 146 is disposed on one of the two bases 110, and at least one third connection structure 146 is disposed on the other of the two bases 110. It can be understood that when the number of the third connection structures 146 is two, one of the third connection structures 146 is disposed on one base 110, and the other third connection structure 146 is disposed on the other base 110.

[0088] Further, the third connection structure 146 includes a mounting seat 144 and a rotating member 147. Specifically, the mounting seat 144 is connected to the base 110. One end of the rotating member 147 extends into the mounting seat 144, and the other end of the rotating member 147 is connected to the end of the second telescopic member 130. The rotating member 147 can rotate relative to the mounting seat 144. In other words, the rotating member 147 is rotatably connected to the mounting seat 144, and the second telescopic member 130 can rotate relative to the base 110 through the third connection structure 146. In the process of the two bases 110 moving forward alternately, the second telescopic member 130 can continuously adjust the angle between the base 110 and the base 110 to avoid motion interference.

[0089] Embodiment 6

[0090] like Figure 1 and Figure 2 As shown, the number of the third connection structures 146 is four, wherein two third connection structures 146 are arranged at both ends of the length direction of one base 110, and the other two third connection structures 146 are arranged at both ends of the length direction of another base 110, and the number of the second telescopic members 130 is two, one end of each second telescopic member 130 is connected to a third connection structure 146 on a base 110, and the other end of the second telescopic member 130 is connected to a third connection structure 146 on another base 110, and the two third connection structures 146 connected to the same second telescopic member 130 are adjacent. The number of the second telescopic members 130 is two. By setting the number of the second telescopic members 130 to two, the spacing between the two bases 110 can be adjusted to avoid the spacing between the two bases 110 in the push structure becoming smaller during the process of alternately moving forward, thereby damaging the first telescopic member 120. Compared with the method of only setting one second telescopic member 130, the two second telescopic members 130 can improve the adjustment accuracy; compared with the method of setting more than two second telescopic members 130, the cost can be reduced. Furthermore, the length directions of the two second telescopic members 130 are the same, so that movement interference can be avoided.

[0091] It is worth noting that the two second telescopic members 130 can be respectively arranged near the two ends of the base 110, that is, the two ends of the second telescopic member 130 are respectively connected to the ends of the two bases 110 or positions near the ends, which is conducive to improving the adjustment effect.

[0092] Embodiment 7

[0093] like Figure 5 , Figure 6 and Figure 7 As shown, an advanced hydraulic support 200 provided by an embodiment of the present invention comprises two bases 110, two top beam structures 210 and a push structure 100 in any of the above embodiments. Specifically, a guide seat 141 in the push structure 100 is arranged on one of the bases 110, and the guide seat 141 can be against the other base 110. When the relative positions of the two bases 110 change, the guide seat 141 can play a guiding role, and to a certain extent, it can avoid the movement interference caused by the small spacing between the two bases 110. One end of the first telescopic member 120 in the push structure 100 is connected to the guide seat 141, and the other end is connected to a base 110 without the guide seat 141. When the first telescopic member 120 pushes or retracts, it can drive the relative positions of the two bases 110 to change, so as to realize the step-by-step forward movement of the advanced hydraulic support 200.

[0094] Furthermore, each top beam structure 210 is connected to the corresponding base 110 via at least two columns 230. By extending and retracting the columns 230, the distance between the top beam structure 210 and the base 110 is adjusted to meet different working conditions and expand the scope of application.

[0095] According to the embodiments of the pushing structure and the advance hydraulic support of the present invention, on the one hand, by arranging the first telescopic member between the two bases and connecting the two ends thereof with the two bases respectively, after fixing one of the bases, changing the overall length of the first telescopic member will drive the other base to move, so that the two bases are relatively displaced, and the advance hydraulic support moves forward in steps. The whole process does not need to be connected with other devices or equipment, and the transfer machine will not be pulled down, which is beneficial to improving safety performance; on the second hand, the pushing structure is small in size and can be applied to different working conditions, which is beneficial to improving the scope of application; furthermore, by arranging the second telescopic member, in the process of alternating advancement of the two bases in the pushing structure, the distance between the two bases can be adjusted to ensure a safe distance between the two bases, thereby protecting the first telescopic member arranged between the two bases and improving its service life.

[0096] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. 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.

[0097] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0098] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0099] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A push structure, characterized in that: Used to push two adjacent bases (110) in an advanced hydraulic support (200), the pushing structure comprising: A guide seat (141) is provided on one of the bases (110), the guide seat (141) is located between the two bases (110), and the guide seat (141) abuts against the other base (110); At least two first telescopic members (120) are located between the two bases (110), one end of the first telescopic member (120) is connected to the guide seat (141) provided on one of the bases (110), the other end of the first telescopic member (120) is connected to the other base (110), the length direction of the first telescopic member (120) is consistent with the length direction of the base (110), and the pushing directions of the two first telescopic members are opposite; at least one second telescopic member (130), one end of the second telescopic member (130) being connected to one of the bases (110), the other end of the second telescopic member (130) being connected to the other base (110), and the second telescopic member (130) being rotatable relative to the base (110); A first connection structure (142) connected to the guide seat (141) provided on one of the bases (110), wherein the first connection structure (142) is a first connection ear; A second connecting structure (143) connected to another base (110), the second connecting structure (143) being located between the two bases (110), and the second connecting structure (143) being a second connecting ear; Wherein, one end of the first telescopic member (120) is connected to the first connecting structure (142), and the other end is connected to the second connecting structure (143); The number of the first connecting ears is two, the two first connecting ears are arranged on the guide seat (141), at least a part of the first telescopic member (120) is arranged between the two first connecting ears, and a bolt member is used to realize a detachable connection between the first telescopic member (120) and the first connecting ear; the number of the second connecting ears is two, the two second connecting ears are arranged on the base (110), at least a part of the first telescopic member (120) is arranged between the two second connecting ears, and a bolt member is used to realize a detachable connection between the first telescopic member (120) and the second connecting ear; The guide seat (141) and the first connecting structure (142) are an integrated structure; the base (110) and the second connecting structure (143) are an integrated structure; The second telescopic member (130) is a second hydraulic member, comprising a second cylinder body and a second piston rod, wherein a second piston in the second piston rod is arranged inside the second cylinder body, and the second piston separates the inside of the second cylinder body into a second rodless chamber and a second rod chamber, wherein the second rod chamber is a portion of the inner chamber of the second cylinder body where the second piston rod is arranged; The second hydraulic component is used to connect to an electro-hydraulic reversing valve, and the electro-hydraulic reversing valve is used to control the working medium in the hydraulic system to flow into or out of the second rodless cavity and the second rod cavity, so that the second hydraulic component can complete the telescopic action, thereby adjusting the distance between the two bases (110) in the pushing structure during the process of the two bases (110) alternately moving forward.

2. The push structure according to claim 1, characterized in that: Also includes: A reinforcing block (145), one side wall of the reinforcing block (145) is connected to the guide seat (141), and the other side wall of the reinforcing block (145) is connected to the base (110).

3. The push structure according to claim 2, characterized in that: There are multiple reinforcement blocks (145), and the multiple reinforcement blocks (145) are arranged along the circumference of the guide seat (141).

4. The push structure according to claim 1, characterized in that: There are two first telescopic members (120), and the two first telescopic members (120) are arranged in parallel. There are two guide seats (141), and one guide seat (141) is connected to one base (110), and the other guide seat (141) is connected to the other base (110). Both ends of each first telescopic member (120) are respectively connected to a corresponding guide seat (141) and the base (110), and the pushing directions of the two first telescopic members (120) are opposite.

5. The push structure according to claim 2, characterized in that: Also includes: At least two third connection structures (146), at least one of the third connection structures (146) is arranged on one of the bases (110), and at least one of the third connection structures (146) is arranged on another of the bases (110), and the third connection structures (146) include: A mounting seat (144) connected to the base (110); a rotating member (147), one end of the rotating member (147) extending into the mounting seat (144), the rotating member (147) being capable of rotating relative to the mounting seat (144), and the other end of the rotating member (147) being connected to an end of the second telescopic member (130); Wherein, the second telescopic member (130) is rotatable relative to the base (110) via the third connection structure (146).

6. The push structure according to claim 5, characterized in that: The number of the third connecting structures (146) is four, two of which are arranged at the two ends of the length direction of one base (110), and the other two are arranged at the two ends of the length direction of another base (110). The number of the second telescopic members (130) is two, one end of each of the second telescopic members (130) is connected to one of the third connecting structures (146) on one of the bases (110), and the other end of the second telescopic member (130) is connected to one of the third connecting structures (146) on another of the bases (110), and the two third connecting structures (146) connected to the same second telescopic member (130) are adjacent.

7. An advanced hydraulic support, characterized in that: include: Two bases (110); The pushing structure according to any one of claims 1 to 6, wherein the guide seat (141) in the pushing structure is arranged on one of the bases (110), one end of the first telescopic member (120) in the pushing structure is connected to the guide seat (141), and the other end of the first telescopic member (120) is connected to the other base (110); Two top beam structures (210), each of the top beam structures (210) is connected to a base (110) of the push structure.

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