Hydraulic support base space protection device and hydraulic support

Abstract

The hydraulic support base space protection device comprises a base body, a connecting rod cushion layer, two sliding rods, a plurality of sliding pieces, a plurality of elastic pieces and a shielding piece, and the base body comprises two oppositely-arranged side walls and a middle cushion layer; the connecting rod cushion layer is arranged between the two side walls and is opposite to the middle cushion layer, the bottom side of the connecting rod cushion layer is rotationally connected with the base body, and the two sliding rods are arranged above the two side walls respectively and extend in the opposite directions of the middle cushion layer and the connecting rod cushion layer; the multiple sliding parts are arranged at intervals in the extending direction of the sliding rods, each sliding part is assembled with the two sliding rods in a sliding mode, each sliding rod is sleeved with multiple elastic parts, and the multiple elastic parts on each sliding rod and the multiple sliding parts are alternately arranged; the shielding piece is deformable and covers the sliding pieces, the base body and the connecting rod cushion layer. The protection device can prevent coal gangue from falling into the space of the base box body, and has a self-cleaning function.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic supports, and in particular to a hydraulic support base space protection device and a hydraulic support. Background Art

[0002] The top coal caving hydraulic support is the core equipment of the fully-mechanized top coal caving working face in a coal mine. With the increase of the support height of the two-column top coal caving hydraulic support and the increase of the spatial cross-section, the coal blocks and gangue that fall during the coal caving process can easily fall into the box space where the rear connecting rod of the support is hinged to the base, so that the original space of the base box is filled with the fallen coal blocks or gangue and cause obstacles to the posture control of the hydraulic support.

[0003] Secondly, the blocked coal gangue will also cause the following two problems: ① During the process of coal (gangue) being crushed, the blocked coal gangue will wear the paint surface of the rear connecting rod and the base box, and it is easy to rust in a humid environment. ② As the coal gangue continues to break and accumulate in the box for a long time, the blocked coal gangue will occupy the rotation space of the rear connecting rod and indirectly squeeze the box, causing its deformation and damage, and in severe cases, it will even damage the stability of the base and the bracket. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a hydraulic support base space protection device, which can prevent coal gangue from falling into the space of the base box, avoid the accumulation of coal gangue and the wear of the paint surface, and has a self-cleaning function, fully ensuring the continuity and safety of the use of the base box.

[0006] The embodiment of the present invention further provides a hydraulic support including the above-mentioned hydraulic support base space protection device.

[0007] The hydraulic support base space protection device of the embodiment of the present invention comprises: A base body, the base body comprising two oppositely arranged side walls and an intermediate cushion layer provided between the two side walls; A connecting rod pad layer, the connecting rod pad layer is arranged between the two side walls and is arranged opposite to the middle pad layer, the bottom side of the connecting rod pad layer is rotatably connected to the base, and the connecting rod pad layer is used to be connected to the bracket connecting rod; Two sliding bars, the two sliding bars are respectively arranged above the two side walls and extend in the relative directions of the middle cushion layer and the connecting rod cushion layer; A plurality of sliding members and a plurality of elastic members, wherein the plurality of sliding members are arranged at intervals along the extending direction of the sliding rod, and each of the sliding members is slidably assembled with two of the sliding rods, each of the sliding rods is sleeved with a plurality of the elastic members, and the plurality of the elastic members on each of the sliding rods are alternately arranged with the plurality of sliding members; The shielding member is deformable and covers the plurality of sliding members, the base body, and the connecting rod pad layer, and the shielding member is connected to the plurality of sliding members, the middle pad layer, and the connecting rod pad layer.

[0008] In some embodiments, when the support connecting rod pushes the connecting rod pad layer in the direction toward the middle pad layer, the connecting rod pad layer fits with the sliding member adjacent to the connecting rod pad layer, a plurality of the sliding members approach each other and slide toward one side of the middle pad layer, the shielding member bends and sinks to form a plurality of grooves, and a plurality of the elastic members deform and store energy; When the support connecting rod pulls the connecting rod pad away from the middle pad, the plurality of sliding members move away from each other and slide toward one side of the connecting rod pad, the shielding member is stretched and tightened, and the plurality of elastic members release elastic potential energy and reset.

[0009] In some embodiments, the substrate includes two first side pads and a base pad, the base pad includes two second side pads and the middle pad, the middle pad is connected to one side of the two second side pads, the other side of each second side pad is connected to one of the first side pads, and the first side pad and the second side pad connected to the first side pad form a whole that constitutes the side wall.

[0010] In some embodiments, the base cushion layer, the connecting rod cushion layer, and the two first side cushion layers are all made of elastic buffering materials, and the outer surfaces of the base cushion layer, the connecting rod cushion layer, and each of the first side cushion layers are provided with a magnetic layer for magnetic attraction and fixation.

[0011] In some embodiments, the middle pad layer and the connecting rod pad layer are arranged opposite to each other in the extension direction of the sliding rod, and the distance between the middle pad layer and the connecting rod pad layer gradually decreases from top to bottom; The base includes an axis body, which is extended and arranged in relative directions along the two side walls. One end of the axis body is connected to the bottom of the connection between the first side pad layer and the second side pad layer of one side wall, and the other end of the axis body is connected to the bottom of the connection between the first side pad layer and the second side pad layer of the other side wall. The bottom side of the connecting rod pad layer is rotatably connected to the axis body.

[0012] In some embodiments, a first limit block and a second limit block are provided on the top side of each of the side walls, the first limit block and the second limit block are arranged at intervals in the extension direction of the sliding rod, each of the sliding rods is connected between the first limit block and the second limit block, and a plurality of the sliding members are located between the first limit block and the second limit block.

[0013] In some embodiments, one end of the elastic member adjacent to the first limit block is fixedly connected to the first limit block, and the other end is fixedly connected to the sliding member adjacent to the first limit block; one end of the elastic member adjacent to the second limit block is fixedly connected to the second limit block, and the other end is fixedly connected to the sliding member adjacent to the second limit block.

[0014] In some embodiments, two inclined surfaces are provided on the top side of the sliding member, each of the inclined surfaces is arranged to be inclined downward along a direction from the middle of the sliding member to the end of the sliding member, and the shielding member is connected and fixed to the inclined surfaces.

[0015] In some embodiments, there are a plurality of shielding members, and the plurality of shielding members are arranged at intervals along the extension direction of the sliding rod, and each shielding member is connected between the connecting rod pad and the sliding member, or between two adjacent sliding members, or between the sliding member and the intermediate pad; And / or, a guide hole is provided on the sliding member, and a diameter of the guide hole is smaller than a diameter of the elastic member.

[0016] The hydraulic support of the embodiment of the present invention comprises a base box, a support connecting rod and a hydraulic support base space protection device as described in any of the above embodiments, the middle cushion layer is placed above the base box, and the support connecting rod is connected to the connecting rod cushion layer.

[0017] Beneficial effects: The hydraulic support base space protection device and the hydraulic support of the embodiment of the present invention can prevent coal gangue from falling into the space of the base box, avoid the accumulation of coal gangue and the wear of the paint surface, and have a self-cleaning function, fully ensuring the continuity and safety of the use of the base box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic three-dimensional structure diagram of a protection device according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Schematic diagram of the right side of the protection device.

[0020] Figure 3 Schematic diagram of the arrangement of shielding members of the protection device according to an embodiment of the present invention.

[0021] Figure 4 yes Figure 3 Schematic diagram of the right side of the protection device.

[0022] Reference numerals: 1-base; 11-base cushion layer; 111-middle cushion layer; 112-second side cushion layer; 12-first side cushion layer; 13-side wall; 14-axis body; 15-second limit block; 16-first limit block; 2-connecting rod cushion; 3-sliding rod; 4-sliding member; 41-inclined surface; 5-elastic member; 6-shielding member. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0024] like Figure 1 and Figure 3 As shown, the hydraulic support base space protection device (hereinafter referred to as the protection device) of an embodiment of the present invention includes a base 1, a connecting rod pad 2, two sliding rods 3, a plurality of sliding parts 4, a plurality of elastic parts 5 and a shielding part 6.

[0025] The base body 1 includes two side walls 13 arranged opposite to each other and an intermediate cushion layer 111 disposed between the two side walls 13. Figure 1 As shown, the two side walls 13 and the middle cushion layer 111 can both be flat plate structures, wherein the two side walls 13 can be arranged vertically, and the two side walls 13 can be spaced apart in the left-right direction, and the middle cushion layer 111 can be connected between the right sides of the two side walls 13. When in use, the middle cushion layer 111 can be placed on the base box of the hydraulic support, thereby playing a shielding and protective role.

[0026] The connecting rod pad layer 2 is disposed between the two side walls 13 and arranged opposite to the middle pad layer 111. The bottom side of the connecting rod pad layer 2 is rotatably connected to the base body 1, and the connecting rod pad layer 2 is used to connect to the bracket connecting rod. Figure 1 As shown, the connecting rod pad layer 2 can also be a flat plate structure, and the connecting rod pad layer 2 can be arranged opposite to the middle pad layer 111 in the front-to-back direction, and the bottom side of the connecting rod pad layer 2 can be rotatably connected to the bottom of the base 1 through a pivot or the like. When in use, the connecting rod pad layer 2 can be connected and fixed to the support connecting rod of the hydraulic support, wherein the support connecting rod can specifically be the rear connecting rod of the hydraulic support.

[0027] The two slide bars 3 are respectively disposed above the two side walls 13 and are extended in the relative direction between the middle cushion layer 111 and the connecting rod cushion layer 2. Figure 1 and Figure 2As shown, the slide bar 3 can be round rod-shaped, and the two slide bars 3 can be fixed above the two side walls 13 respectively. The two slide bars 3 can be arranged at intervals in the left-right direction, and each slide bar 3 can be generally extended along the front-back direction.

[0028] The plurality of sliding members 4 are arranged at intervals along the extension direction of the sliding rod 3 , and each sliding member 4 is slidably assembled with two sliding rods 3 , each sliding rod 3 is sleeved with a plurality of elastic members 5 , and the plurality of elastic members 5 on each sliding rod 3 are alternately arranged with the plurality of sliding members 4 .

[0029] For example, Figure 1 and Figure 2 As shown, the sliding member 4 can be a vertical plate structure, and multiple sliding members 4 can be arranged in parallel and spaced apart in the front-to-back direction. Each sliding member 4 can extend along the left-to-right direction. The left end of each sliding member 4 can be slidably assembled with the left sliding rod 3, and the right end of each sliding member 4 can be slidably assembled with the right sliding rod 3.

[0030] The elastic member 5 can be a spring, and the elastic member 5 can be sleeved on the outer peripheral side of the sliding rod 3. Each sliding rod 3 can be sleeved with multiple elastic members 5 arranged sequentially along the front and rear directions. The multiple elastic members 5 and the multiple sliding members 4 on each sliding rod 3 can be arranged alternately one by one in the front and rear directions, and an elastic member 5 can be provided on both the front and rear sides of each sliding member 4.

[0031] The shielding member 6 is deformable and covers the plurality of sliding members 4, the base 1, and the connecting rod pad 2, and the shielding member 6 is connected to the plurality of sliding members 4, the intermediate pad 111, and the connecting rod pad 2. Figure 3 and Figure 4 As shown, the shielding member 6 can be a cloth-like structure. For example, the shielding member 6 can be made of rubber and fiber composite materials. The shielding member 6 can be connected and fixed to the upper surface of each sliding member 4, the upper surface of the middle cushion layer 111 and the upper surface of the connecting rod cushion layer 2 by bonding.

[0032] When in use, the protection device can be directly placed on the base box of the hydraulic support, and the connecting rod cushion layer 2 of the protection device can be connected and fixed to the support connecting rod of the hydraulic support.

[0033] When the support connecting rod of the hydraulic support pushes the connecting rod pad 2 forward, the connecting rod pad 2 can swing forward and fit with the rearmost sliding member 4. At this time, all the sliding members 4 will slide forward under the pushing action of the support connecting rod, and the shielding member 6 above the sliding member 4 will be squeezed and deformed. The parts of the shielding member 6 between the middle pad 111 and the frontmost sliding member 4, between two adjacent sliding members 4, and between the connecting rod pad 2 and the rearmost sliding member 4 will sink and form multiple grooves. The multiple grooves are arranged at intervals in the front-to-back direction, and each groove is generally extended in the left-to-right direction. The above-mentioned multiple elastic members 5 will be stretched or compressed, so that each elastic member 5 will store elastic potential energy.

[0034] When the support connecting rod pulls the connecting rod pad 2 in the direction away from the middle pad 111, that is, when the support connecting rod pulls the rearmost sliding member 4 backward, the multiple sliding members 4 will move away from each other and slide backward under the joint action of the support connecting rod and the multiple elastic members 5. At this time, due to the increase in the distance between two adjacent sliding members 4, the shielding member 6 will be stretched and tightened, and the multiple elastic members 5 will release the elastic potential energy and reset.

[0035] Since the shielding member 6 can always shield the upper part of the base box of the hydraulic support in the above two use states, the gangue and the like will fall on the shielding member 6 instead of directly falling into the empty space of the base box. In addition, during the process of the shielding member 6 extending and bending, the gangue and the like on the shielding member 6 can be shaken off, so that the protective device itself has a self-cleaning function.

[0036] Secondly, the middle cushion layer 111, the two side walls 13 and the connecting rod cushion layer 2 can also play a shielding and protective role, that is, the shielding member 6 forms a layer of protection, and the middle cushion layer 111, the two side walls 13 and the connecting rod cushion layer 2 form a whole layer of protection. Through these two layers of protection, coal gangue and the like are fully prevented from falling into the idle space of the base box.

[0037] It should be noted that the coal gangue in the embodiment of the present invention is a general term, and the coal gangue can specifically be coal, gangue, or a mixture of coal and gangue.

[0038] The hydraulic support base space protection device of the embodiment of the present invention can prevent coal gangue from falling into the space of the base box, avoids the accumulation of coal gangue and the wear of the paint surface, and has a self-cleaning function, fully ensuring the continuity and safety of the use of the base box.

[0039] In some embodiments, the substrate 1 includes two first side pads 12 and a base pad 11, the base pad 11 includes two second side pads 112 and a middle pad 111, the middle pad 111 is connected to one side of the two second side pads 112, and the other side of each second side pad 112 is respectively connected to a first side pad 12, and the first side pad 12 and the second side pad 112 connected to the first side pad 12 form a whole to form a side wall 13.

[0040] For example, Figure 1 As shown, the base cushion layer 11 as a whole can be a U-shaped structure, the two second side cushion layers 112 of the base cushion layer 11 can both be vertical plate structures and can be arranged in parallel and spaced apart in the left and right directions, and the middle cushion layer 111 can be connected between the front side edges of the two second side cushion layers 112.

[0041] The two first side pads 12 may also be vertical plate structures and may be arranged in parallel and spaced apart in the left-right direction. One of the first side pads 12 may be bonded and fixed to the rear side of the second side pad 112 by polyurethane glue, and the other first side pad 12 may also be bonded and fixed to the rear side of the other second side pad 112 by polyurethane glue. The bonded first side pad 12 and second side pad 112 form a side wall 13 of the base 1. Since the undulations of the bottom side surfaces of the first side pad 12 and the second side pad 112 are different, this split design facilitates independent processing and molding, and is also conducive to simplifying the overall processing technology and reducing processing costs.

[0042] In some embodiments, the base pad 11, the connecting rod pad 2, and the two first side pads 12 are all made of elastic buffer materials, and the outer surfaces of the base pad 11, the connecting rod pad 2, and each first side pad 12 are provided with a magnetic layer for magnetic attraction and fixation.

[0043] For example, the elastic buffer material can be a rubber buffer material, so that the base cushion layer 11, the connecting rod cushion layer 2, and the two first side cushion layers 12 have moderate hardness, wear resistance and anti-aging performance. The magnetic layer can be a strong magnetic material, so that the base cushion layer 11, the connecting rod cushion layer 2, and the two first side cushion layers 12 can be magnetically attached and fixed to the corresponding parts of the hydraulic support, thereby improving the convenience of installation and disassembly.

[0044] In some embodiments, the middle pad layer 111 and the connecting rod pad layer 2 are arranged opposite to each other in the extension direction of the sliding rod 3 , and the distance between the middle pad layer 111 and the connecting rod pad layer 2 gradually decreases from top to bottom.

[0045] For example, Figure 1 and Figure 2As shown, the middle cushion layer 111 and the connecting rod cushion layer 2 can be arranged relative to each other in the front-to-back direction, and the spacing between the middle cushion layer 111 and the connecting rod cushion layer 2 in the front-to-back direction can gradually decrease from top to bottom, that is, the middle cushion layer 111 and the connecting rod cushion layer 2 can be roughly arranged in an eight-shaped shape, so that the position arrangement of the middle cushion layer 111 and the connecting rod cushion layer 2 can be adapted to the bottom structure of the hydraulic support.

[0046] The base 1 includes an axle body 14, which is extended in relative directions along the two side walls 13. One end of the axle body 14 is connected to the bottom of the connection between the first side pad 12 and the second side pad 112 of one side wall 13, and the other end of the axle body 14 is connected to the bottom of the connection between the first side pad 12 and the second side pad 112 of the other side wall 13. The bottom side of the connecting rod pad 2 is rotatably connected to the axle body 14.

[0047] For example, Figure 1 As shown, the shaft body 14 can be a pivot, and the shaft body 14 can be fixed to the bottom of the base 1 by bonding or the like, and the shaft body 14 can extend along the left and right directions, wherein the left end of the shaft body 14 can be connected and fixed to the bottom of the joint between the first side pad 12 and the second side pad 112 on the left side, and the right end of the shaft body 14 can be connected and fixed to the bottom of the joint between the first side pad 12 and the second side pad 112 on the right side.

[0048] The connecting rod pad 2 can be arranged in an inclined direction from the upper back to the lower front. The extending direction of the connecting rod pad 2 can be tangent to the shaft 14, and the bottom edge of the connecting rod pad 2 can be rotatably assembled with the shaft 14, thereby meeting the use requirement of the connecting rod pad 2 rotating around the shaft 14 under the drive of the bracket connecting rod.

[0049] In some embodiments, a first limit block 16 and a second limit block 15 are provided on the top side of each side wall 13, and the first limit block 16 and the second limit block 15 are arranged at intervals in the extension direction of the sliding rod 3, each sliding rod 3 is connected between the first limit block 16 and the second limit block 15, and multiple sliding members 4 are located between the first limit block 16 and the second limit block 15.

[0050] For example, Figure 1 As shown, the first limit block 16 and the second limit block 15 can both be block-shaped structures, and the first limit block 16 and the second limit block 15 can be fixed to the top side of the side wall 13 by bonding or the like and arranged at intervals in the front-to-back direction. The first limit block 16 and the second limit block 15 can both be provided with threaded holes, and the front and rear ends of the sliding rod 3 on the corresponding side can be respectively connected and fixed to the first limit block 16 and the second limit block 15 by threaded assembly.

[0051] This makes it easier to assemble and install the slide rod 3, and on the other hand, the first limit block 16 and the second limit block 15 can also play a role of limiting constraints, that is, the limit blocks can stop the sliding member 4 and the elastic member 5, thereby ensuring the structural stability of the assembly.

[0052] In some embodiments, one end of the elastic member 5 adjacent to the first limit block 16 is fixedly connected to the first limit block 16, and the other end is fixedly connected to the sliding member 4 adjacent to the first limit block 16; one end of the elastic member 5 adjacent to the second limit block 15 is fixedly connected to the second limit block 15, and the other end is fixedly connected to the sliding member 4 adjacent to the second limit block 15.

[0053] For example, the rear end of the rearmost elastic member 5 on each slide bar 3 can be welded to the second limit block 15, and the front end can be welded to the rearmost sliding member 4. The front end of the frontmost elastic member 5 on each slide bar 3 can be welded to the first limit block 16, and the rear end can be welded to the frontmost sliding member 4.

[0054] Therefore, when the connecting rod cushion layer 2 pushes the rearmost sliding member 4 forward, the rearmost elastic member 5 on each sliding rod 3 can also be stretched to store energy, thereby avoiding the situation where the rearmost elastic member 5 is idle.

[0055] In some embodiments, two inclined surfaces 41 are provided on the top side of the sliding member 4 , each inclined surface 41 is arranged to be inclined downward along a direction from the middle of the sliding member 4 to the end of the sliding member 4 , and the shielding member 6 is connected and fixed to the inclined surface 41 .

[0056] For example, Figure 1 As shown, one of the two inclined surfaces 41 on the top side of the sliding member 4 can be located in the left half of the sliding member 4, and the inclined surface 41 can be arranged generally tilted downward from the upper right to the lower left, and the other inclined surface 41 can be located in the right half of the sliding member 4, and the inclined surface 41 can be arranged generally tilted downward from the upper left to the lower right.

[0057] The shielding member 6 can be bonded and fixed to the two inclined surfaces 41 of each sliding member 4 by polyurethane glue. The setting of the inclined surfaces 41 can form a slope structure on the top of the sliding member 4, thereby facilitating the coal gangue and the like to slide off the shielding member 6.

[0058] In some embodiments, there are multiple shielding members 6, and the multiple shielding members 6 are arranged at intervals along the extension direction of the sliding rod 3, and each shielding member 6 is connected between the connecting rod pad 2 and the sliding member 4, or between two adjacent sliding members 4, or between the sliding member 4 and the intermediate pad 111.

[0059] For example, Figure 3 and Figure 4As shown, the multiple shielding members 6 can all be in the shape of long strips and arranged sequentially along the front-to-back direction. The front edge of the rearmost shielding member 6 can be bonded and fixed to the upper surface of the rearmost sliding member 4, and the rear edge of the rearmost shielding member 6 can be bonded and fixed to the upper surface of the connecting rod pad 2. The front edge of the frontmost shielding member 6 can be bonded and fixed to the frontmost intermediate pad 111, and the rear edge of the frontmost shielding member 6 can be bonded and fixed to the upper surface of the frontmost sliding member 4. The remaining shielding members 6 can be bonded between the upper surfaces of two adjacent sliding members 4. As a result, the width dimension of the shielding member 6 in the front-to-back direction can adapt to the changes in different spacings, which facilitates the installation and arrangement of the shielding member 6.

[0060] In some embodiments, the sliding member 4 is provided with a guide hole. For example, both left and right ends of each sliding member 4 can be bored and chamfered, and the hole-shaped structure processed is the guide hole. The diameter of the guide hole is smaller than the diameter of the elastic member 5, thereby avoiding the elastic member 5 from moving along the guide hole and ensuring the structural stability of the assembly of the elastic member 5.

[0061] The hydraulic support according to the embodiment of the present invention is described below.

[0062] The hydraulic support of the embodiment of the present invention comprises a base box, a support connecting rod and a protective device. The protective device may be a hydraulic support base space protective device as described in any of the above embodiments. The intermediate cushion layer 111 is placed above the base box, and the support connecting rod is connected to the connecting rod cushion layer 2. The hydraulic support may specifically be a top coal caving support. The setting of the protective device plays a shielding and protective role, preventing the coal gangue from falling into the idle space of the base box, and the sliding member 4, the shielding member 6, etc. of the protective device can also be adaptively adjusted and changed with the action of the support connecting rod, fully meeting the use needs of protection.

[0063] A protection device according to a specific example of the present invention is described below.

[0064] The protective device of the embodiment of the present invention includes a shaft 14, a first side cushion layer 12, a base cushion layer 11, a connecting rod cushion layer 2, a first limit block 16, a second limit block 15, a sliding rod 3, a sliding member 4, a spring (elastic member 5) and a cover cloth (shielding member 6).

[0065] The shaft body 14 is fixedly connected to the first side cushion layer 12, and the base cushion layer 11 includes three parts: left, right and rear cushion layers, which are an integrated structure, wherein the left and right cushion layers of the base cushion layer 11 respectively constitute a second side cushion layer 112. The connecting rod cushion layer 2 is tangent to the shaft body 14 and can move freely around the shaft body 14 without fixed constraints. The materials of the above cushion layers are all rubber buffer materials with moderate hardness, wear resistance and aging resistance. The outer surface of the cushion layer is a strong magnetic material, so that the corresponding cushion layer can be tightly adsorbed with the base box, the rear connecting rod contact surface, etc., and there can be no gap when adsorbed and connected, and installation and disassembly are simple.

[0066] The first limit block 16 and the second limit block 15 are respectively located on the left (right) upper side of the first side cushion layer 12 and the base cushion layer 11. Furthermore, the first limit block 16 and the second limit block 15 are both drilled and tapped, and the two ends of the slide bar 3 are respectively connected to the first limit block 16 and the second limit block 15 by threads, so that the self-locking performance of the connection is good and the connection strength is high.

[0067] The lower corners of the left and right ends of each sliding member 4 are bored and chamfered to form guide holes. The two sliding rods 3 are equipped with a plurality of sliding members 4, and the sliding rods 3 and each sliding member 4 can slide freely without obstruction. Springs are fixed between the adjacent end surfaces of the second limit block 15, the sliding member 4, and the first limit block 16. The spring moves with the sliding member 4 or is compressed or stretched.

[0068] The protective device is provided with a plurality of springs and a plurality of sliding members 4. The following description is made by taking 6 springs and 5 sliding members 4 as an example. The six springs are, in order from back to front, the first spring, the second spring, the third spring, the fourth spring, the fifth spring and the sixth spring. The inner diameter of each spring needs to be larger than the boring diameter of the sliding member 4. The 5 sliding members 4 are, in order from back to front, the first sliding member, the second sliding member, the third sliding member, the fourth sliding member and the fifth sliding member.

[0069] The first spring is located between the second limit block 15 and the first sliding member, and the corresponding spring spring coefficient is K1, and the corresponding spring original length is L1; the second spring is located between the first sliding member and the second sliding member, and the corresponding spring spring coefficient is K2, and the corresponding spring original length is L2; ​​the third spring is located between the second sliding member and the third sliding member, and the corresponding spring spring coefficient is K3, and the corresponding spring original length is L3; the fourth spring is located between the third sliding member and the fourth sliding member, and the corresponding spring spring coefficient is K4, and the corresponding spring original length is L4; the fifth spring is located between the fourth sliding member and the fifth sliding member, and the corresponding spring spring coefficient is K5, and the corresponding spring original length is L5; the sixth spring is located between the fifth sliding member and the first limit block 16, and the corresponding spring spring coefficient is K0, and the corresponding spring original length is L0. In actual situations, the spring coefficient and original length of each spring can be adjusted and selected as needed.

[0070] The top of the sliding member 4 can be cut into an inclined surface 41, with a reserved slope. The cover cloth is respectively located between the adjacent sliding members 4, the sliding member 4 and the connecting rod pad 2, and the sliding member 4 and the base pad 11, and the cover cloth can be bonded by polyurethane glue, so that the bonding strength is large, meeting the impact resistance requirements. The material of the cover cloth can be rubber and fiber composite material, and the surface of the cover cloth is smooth and flat, with good elasticity and wear resistance.

[0071] During processing, the shaft body 14, the first side cushion layer 12, and the base cushion layer 11 can be bonded together by polyester glue. The outer surface of the integral structure formed by bonding can be made of a strong magnetic material, so that it can fit tightly with the base box of the hydraulic support. The vertical section of the connecting rod cushion layer 2 (which can be regarded as the rear end face of the connecting rod cushion layer 2) is made of a strong magnetic material, so that it can automatically engage with the rear connecting rod (support connecting rod) of the hydraulic support. In use, the shaft body 14, the first side cushion layer 12, the base cushion layer 11, and the connecting rod cushion layer 2 form a primary protection structure. In some other embodiments, the connecting rod cushion layer can also be hingedly connected to the support connecting rod, etc.

[0072] During processing, a sliding member 4 can be welded between the first spring, the second spring, the third spring, the fourth spring, the fifth spring, and the sixth spring, respectively, that is, each sliding member 4 is welded and connected with the corresponding elastic member 5, thereby ensuring the stability of the structure. During welding, the coaxiality of the central axis of the spring and the center of the boring of the sliding member 4 is ensured.

[0073] Then the slide bar 3 can be inserted into the guide holes of the multiple springs and the multiple sliding members 4, and the two ends of the slide bar 3 are respectively connected to the first limit block 16 and the second limit block 15 by threads, so as to facilitate assembly. The contact surface between the first spring and the second limit block 15, and the contact surface between the sixth spring and the first limit block 16 are welded and fixed. The bottom surfaces of the second limit block 15 and the first limit block 16 are bonded to the upper surfaces of the first side cushion layer 12 and the base cushion layer 11 with polyester glue. At the same time, the cover cloth is bonded to the upper inclined surface 41 of the sliding member 4, the connecting rod cushion layer 2 and the base cushion layer 11 with polyester glue. The second limit block 15, the first limit block 16, the slide bar 3, the sliding member 4, the multiple springs, and the cover cloth form a secondary protection structure.

[0074] In use, the structure of the protection device operates as follows: 1. Hydraulic support posture adjustment (rear connecting rod pushes forward) When the hydraulic support adjusts its posture (the rear connecting rod is pushed forward), the rear connecting rod will drive the connecting rod pad 2 to rotate (forward) around the shaft 14 until it contacts the first sliding member (the sliding member 4 between the first spring and the second spring). At this time, the cover cloth between the connecting rod pad 2 and the first sliding member will bend and sink.

[0075] As the connecting rod pad 2 pushes the first sliding member forward, the first spring will stretch and accumulate elastic potential energy (tensile potential energy), and the second, third, fourth, fifth and sixth springs will be compressed and accumulate elastic potential energy (compressive potential energy), and the cover cloth between the sliding members 4 will sink slightly during this process.

[0076] As the connecting rod pad 2 pushes the first sliding member to continue moving forward, the first spring continues to stretch to accumulate tensile elastic potential energy, the second, third, fourth, fifth and sixth springs will continue to be compressed, and the cover cloth between the sliding members 4 will continue to sink.

[0077] When the connecting rod pad 2 pushes the first sliding part to continue moving forward, the first spring continues to stretch to accumulate tensile potential energy, and the second, third, fourth, fifth and sixth springs are continuously compressed to the elastic limit (maximum compression potential energy). The cloth between the sliding parts 4 sinks to the maximum value, and the distance between the sliding parts 4 is the smallest, forming a "sliding part slope". The coal (gangue) between the frames slides after contact, and the fine coal (gangue) powder falls into the sunken groove of the cloth and accumulates.

[0078] 2. Hydraulic support posture adjustment (pull the rear connecting rod backward) When the hydraulic support adjusts its posture (the rear connecting rod is pulled backward), the rear pulling rod will drive the connecting rod pad 2 to rotate around the shaft 14 (backward), the elastic potential energy (tensile potential energy) accumulated in the first spring is released, driving the first sliding member to move backward, and the elastic potential energy (compression potential energy is the largest) of the second, third, fourth, fifth, and sixth springs is released, and the cover cloth between the sliding members 4 begins to be pulled.

[0079] When the connecting rod pad 2 continues to move backward, the elastic potential energy (tensile potential energy) accumulated by the first spring continues to be released, and the elastic potential energy (compression potential energy) of the second, third, fourth, fifth and sixth springs continue to be released, and the cover cloth between the sliding parts 4 continues to be stretched tight.

[0080] When the connecting rod pad 2 continues to move backward, the elastic potential energy (tensile potential energy) accumulated in the first spring is completely released, the first spring returns to its original length, the elastic potential energy (compression potential energy) of the second, third, fourth, fifth and sixth springs are completely released, the second, third, fourth, fifth and sixth springs return to their original lengths, and the cloths between the sliding parts 4 are stretched and tightened to form a "cloth slope". The coal (gangue) that runs between the frames falls on the cloth slope and slides down. At the same time, the fine coal (gangue) accumulated in the sunken state of the cloth slides down along the slope of the cloth, realizing the coal (gangue) self-cleaning function.

[0081] In particular, when the device plays a protective role in preventing coal (gangue) from falling and falling into the box space where the rear connecting rod of the support is hinged with the base, a primary protection structure and a secondary protection structure are formed in the structure.

[0082] Among them, the secondary protection structure can realize the self-cleaning of coal (gangue) during the posture adjustment of the hydraulic support. It corresponds to the two motion states of the rear connecting rod pushing forward and pulling backward, and forms "sliding part slope", "sliding part slope-cloth cover slope" and "cloth cover slope" according to the motion process of the rear connecting rod. It can effectively play the role of the secondary protection structure of the device to prevent coal (gangue) from entering the base box space.

[0083] "Sliding part inclined surface" state: after the coal (gangue) falls on the upper inclined surface of the sliding part, it bounces off or slides down, and the fine coal (gangue) powder will fall into the groove formed between the sunken cover cloths and accumulate; In the "cloth slope" state: the coal (gangue) falls on the surface of the cloth or bounces off or slides down, and the fine coal (gangue) powder slides down along the cloth slope.

[0084] "Sliding member slope - cloth cover slope" state: This state is in the process of mutual movement and transformation between the "sliding member slope" and "cloth cover slope" states, and the coal (gangue) will slide down along the sliding member slope - cloth cover slope.

[0085] Among them, the flexible cushion layer of the primary protection structure can act as a flexible medium to completely isolate the contact between the coal (gangue) and the hydraulic support base box and the rear connecting rod, and protect the surface paint. At the same time, it prevents and avoids the damage to the base box caused by accidental falling coal (gangue). Specifically, in actual use, larger coal gangue will fall on the inclined surface of at least two sliding parts, and each sliding part will absorb the impact energy of the coal gangue. The impact energy will be transmitted to the first side cushion layer and the second side cushion layer through the two sliding rods, the first limit block and the second limit block. Since the first side cushion layer and the second side cushion layer are made of elastic materials, the first side cushion layer and the second side cushion layer will absorb and buffer the impact energy, so that the protection device has an active pressure-releasing buffering process, and also reduces the impact on the bottom side of the base box, etc.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0090] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0091] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A hydraulic support base space protection device, characterized in that: include: A base body, the base body comprising two oppositely arranged side walls and an intermediate cushion layer provided between the two side walls; A connecting rod pad layer, the connecting rod pad layer is arranged between the two side walls and is arranged opposite to the middle pad layer, the bottom side of the connecting rod pad layer is rotatably connected to the base, and the connecting rod pad layer is used to be connected to the bracket connecting rod; Two sliding bars, the two sliding bars are respectively arranged above the two side walls and extend in the relative directions of the middle cushion layer and the connecting rod cushion layer; A plurality of sliding members and a plurality of elastic members, wherein the plurality of sliding members are arranged at intervals along the extending direction of the sliding rod, and each of the sliding members is slidably assembled with two of the sliding rods, each of the sliding rods is sleeved with a plurality of the elastic members, and the plurality of the elastic members on each of the sliding rods are alternately arranged with the plurality of sliding members; The shielding member is deformable and covers the plurality of sliding members, the base body, and the connecting rod pad layer, and the shielding member is connected to the plurality of sliding members, the middle pad layer, and the connecting rod pad layer.

2. The hydraulic support base space protection device according to claim 1, characterized in that: When the support connecting rod pushes the connecting rod pad layer in the direction toward the middle pad layer, the connecting rod pad layer fits with the sliding member adjacent to the connecting rod pad layer, the plurality of sliding members approach each other and slide toward one side of the middle pad layer, the shielding member bends and sinks to form a plurality of grooves, and the plurality of elastic members deform and store energy; When the support connecting rod pulls the connecting rod pad away from the middle pad, the plurality of sliding members move away from each other and slide toward one side of the connecting rod pad, the shielding member is stretched and tightened, and the plurality of elastic members release elastic potential energy and reset.

3. The hydraulic support base space protection device according to claim 1, characterized in that: The substrate includes two first side pads and a base pad, the base pad includes two second side pads and the middle pad, the middle pad is connected to one side of the two second side pads, the other side of each second side pad is connected to one of the first side pads respectively, and the first side pad and the second side pad connected to the first side pad form a whole that constitutes the side wall.

4. The hydraulic support base space protection device according to claim 3 is characterized in that: The base cushion layer, the connecting rod cushion layer, and the two first side cushion layers are all made of elastic buffer materials, and the outer surfaces of the base cushion layer, the connecting rod cushion layer, and each of the first side cushion layers are provided with a magnetic layer for magnetic attraction and fixation.

5. The hydraulic support base space protection device according to claim 3, characterized in that: The middle pad layer and the connecting rod pad layer are arranged opposite to each other in the extending direction of the sliding rod, and the distance between the middle pad layer and the connecting rod pad layer gradually decreases from top to bottom; The base includes an axis body, which is extended and arranged in relative directions along the two side walls. One end of the axis body is connected to the bottom of the connection between the first side pad layer and the second side pad layer of one side wall, and the other end of the axis body is connected to the bottom of the connection between the first side pad layer and the second side pad layer of the other side wall. The bottom side of the connecting rod pad layer is rotatably connected to the axis body.

6. The hydraulic support base space protection device according to claim 1, characterized in that: A first limit block and a second limit block are provided on the top side of each side wall, and the first limit block and the second limit block are arranged at intervals in the extension direction of the sliding rod, each sliding rod is connected between the first limit block and the second limit block, and the plurality of sliding members are located between the first limit block and the second limit block.

7. The hydraulic support base space protection device according to claim 6, characterized in that: One end of the elastic member adjacent to the first limit block is fixedly connected to the first limit block, and the other end is fixedly connected to the sliding member adjacent to the first limit block. One end of the elastic member adjacent to the second limit block is fixedly connected to the second limit block, and the other end is fixedly connected to the sliding member adjacent to the second limit block.

8. The hydraulic support base space protection device according to claim 1, characterized in that: Two inclined surfaces are arranged on the top side of the sliding member, each of the inclined surfaces is arranged obliquely downward along a direction from the middle of the sliding member to the end of the sliding member, and the shielding member is connected and fixed to the inclined surface.

9. The hydraulic support base space protection device according to any one of claims 1 to 8, characterized in that: There are a plurality of shielding members, which are arranged at intervals along the extension direction of the sliding rod, and each shielding member is connected between the connecting rod pad and the sliding member, or between two adjacent sliding members, or between the sliding member and the intermediate pad; And / or, a guide hole is provided on the sliding member, and a diameter of the guide hole is smaller than a diameter of the elastic member.

10. A hydraulic support, characterized in that: It comprises a base box, a support connecting rod and a hydraulic support base space protection device as described in any one of claims 1 to 9, wherein the middle cushion layer is placed above the base box, and the support connecting rod is connected to the connecting rod cushion layer.

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