Stepped coal mine electric support with adjustable expansion ratio

Abstract

The invention relates to the technical field of coal machinery, and discloses a step-by-step coal mine electric support with an adjustable expansion ratio, which comprises a bottom frame, a movement mechanism is arranged at the lower part of the bottom frame, the movement mechanism is used for driving the bottom frame to move, the movement mechanism is connected with a cleaning mechanism, the support adopts a self-locking device with a spring, and the self-locking device is connected with the cleaning mechanism. When the sliding block moves to a designated position, the stopping block can enter the groove under the action of the spring, the stopping block can be tightly attached to the top of the groove under the action of the spring, the sliding block is effectively prevented from moving disorderly in the working process, and the stability of the support in the working process can be guaranteed. According to the support, a plurality of grooves are formed in the top beam, the sliding block can achieve the self-locking function at the designated position, all the grooves represent different expansion and contraction ratios, and the step adjustable expansion and contraction ratios are achieved; when the support needs to meet more telescopic ratios, the telescopic ratios can be achieved by changing the positions of the grooves and the number of the grooves, and therefore the requirements for various different mining heights are met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal machinery, and particularly relates to a coal mine electric support with a step-adjustable telescopic ratio. BACKGROUND

[0002] A traditional coal mine support adopts a hydraulic oil cylinder, and has problems such as underground water pollution caused by emulsion leakage and insufficient control precision. Therefore, a coal mine electric support is proposed. However, due to the structure of the three-force rod folding rod system, the telescopic ratio of the support lifting is insufficient, which leads to the difficulty of electric support transportation or the failure to meet the mining height requirement. Therefore, a coal mine electric support structure with a top beam and a guide slide rail is designed to improve the telescopic ratio of the electric support, greatly increase the support mining height interval, and improve the adaptability of the support. SUMMARY

[0003] In view of the above problems, the present application provides a coal mine electric support with a step-adjustable telescopic ratio to effectively solve the problems mentioned in the background.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a coal mine electric support with a step-adjustable telescopic ratio, comprising a chassis, a movement mechanism is arranged at the lower part of the chassis, the movement mechanism is used to drive the movement of the chassis, a cleaning mechanism is connected to the movement mechanism, the cleaning mechanism is used to remove the impurities adhered to the track during movement to prevent affecting the movement, a movement prevention mechanism is arranged on the chassis, the movement prevention mechanism is used to prevent movement during support, a rotating frame is connected to the chassis through a direction adjusting mechanism, a support mechanism is arranged at the lower part of the rotating frame, the support mechanism is used to support the rotating frame and increase the stability during support, a position adjusting mechanism is arranged at the upper part of the rotating frame, the position adjusting mechanism is used to adjust the position of the support, an adjustable support mechanism is connected to the position adjusting mechanism, the adjustable support mechanism is used to support in the coal mine tunnel and adjust the telescopic ratio during support.

[0005] Preferably, the adjustable support mechanism comprises a base, one end of a hinged beam is hinged to the base, the other end of the hinged beam is hinged to one end of a connecting beam, the other end of the connecting beam is hinged to a top beam, one end of a lower connecting rod is hinged to the base, the other end of the lower connecting rod is hinged to one end of an upper connecting rod, the other end of the upper connecting rod is hinged to an upper hinge block, the upper hinge block is symmetrically fixedly installed on the lower part of the base plate, one end of a front connecting rod is hinged to the base, the other end of the front connecting rod is hinged to the connecting beam, one end of a support electric cylinder is fixedly connected to the front connecting rod, the other end of the support electric cylinder is hinged to the connection between the upper connecting rod and the lower connecting rod, one end of a leveling electric cylinder is hinged to the connecting beam, the other end of the leveling electric cylinder is hinged to a fixed frame, the fixed frame is fixedly installed on the lower part of the top beam, one end of a horizontal electric cylinder is hinged to the fixed frame, the other end of the horizontal electric cylinder is hinged to a horizontal electric cylinder connecting frame, the horizontal electric cylinder connecting frame is fixedly installed on the bottom of the base plate between the extension electric push rods, an extension frame is fixedly connected to the lower side of the front part of the top beam, the extension frame is rotatably connected to an extension rotating shaft, the outer surface of the extension rotating shaft is fixedly connected to an extension plate, the extension plate is horizontally connected to the top beam, an extension plate connecting block is fixedly connected to the bottom wall of the extension plate, the extension plate connecting block is hinged to one end of an extension electric push rod, the other end of the extension electric push rod is hinged to an extension electric push rod connecting frame, the extension electric push rod connecting frame is fixedly installed on the bottom wall of the top beam, and a locking mechanism is connected to the base plate.

[0006] Preferably, the locking mechanism comprises sliding blocks fixedly connected to the upper part of the base plate, the sliding blocks are slidingly connected to guide rails, the guide rails are symmetrically detachably connected to the bottom of the top beam, a sliding groove is arranged on the bottom wall of the top beam between the guide rails, a plurality of grooves are arranged on the bottom wall of the sliding groove, a locking cylinder is fixedly connected to the upper part of the base plate, a locking plug rod is slidingly connected to the locking cylinder, the locking plug rod is inserted into the grooves, springs are clamped between the locking plug rod and the locking cylinder, the springs are located in the locking cylinder, the locking plug rod passes through a through hole, the through hole is formed in the base plate, mounting frames are symmetrically fixedly connected to the lower part of the base plate, a locking electric rotating shaft is rotatably connected between the mounting frames, a winding drum is fixedly connected to the outer surface of the locking electric rotating shaft, a pull rope is windingly connected to the outer surface of the winding drum, a pull rod is connected to the end of the pull rope, the pull rod is hung on a pull rod connecting block, and the pull rod connecting block is fixedly installed on the lower part of the locking plug rod.

[0007] Preferably, the movement mechanism comprises a movement support frame fixedly connected to the lower part of the chassis, a movement frame fixedly connected to the end of the movement support frame, a movement gear cavity arranged in the movement frame, a movement gear shaft rotatably connected between the end walls of the movement gear cavity, a movement motor fixedly installed in the movement frame and power-connected with the movement gear shaft, a movement gear fixedly connected to the outer surface of the movement gear shaft, a movement toothed belt engaged with the movement gear and slidably connected to the end wall of the movement frame, and a plurality of movement plates uniformly fixedly connected to the outer surface of the movement toothed belt.

[0008] Preferably, the cleaning mechanism comprises a cleaning gear cavity arranged in the movement frame, a cleaning gear shaft rotatably connected through the end walls of the cleaning gear cavity, a cleaning gear fixedly connected to the outer surface of the cleaning gear shaft, the cleaning gear engaged with the movement toothed belt, a cleaning driving pulley fixedly connected to the end of the cleaning gear shaft, a cleaning driven pulley connected in transmission with the cleaning driving pulley through a cleaning transmission belt, the cleaning driven pulley fixedly installed at the end of a worm shaft, the worm shaft rotatably connected to a cleaning frame, the worm shaft extending into a worm cavity arranged in the cleaning frame, the cleaning frame fixedly installed at the lower part of a fixed plate, the fixed plate fixedly connected to the side wall of the chassis, a worm fixedly connected to the outer surface of the worm shaft in the worm cavity, the worm engaged with a worm wheel, the worm wheel fixedly installed on the outer surface of a cleaning rotating shaft, the cleaning rotating shaft rotatably installed on the end wall of the worm cavity, and a plurality of cleaning brushes fixedly connected to the outer surface of the cleaning rotating shaft.

[0009] Preferably, the anti-movement mechanism comprises an anti-movement gear cavity arranged in the chassis, an anti-movement gear shaft rotatably connected between the end walls of the anti-movement gear cavity, an anti-movement motor fixedly installed in the chassis and power-connected with the anti-movement gear shaft, an anti-movement driving gear fixedly connected to the outer surface of the anti-movement gear shaft, an anti-movement driven gear engaged with the anti-movement driving gear and fixedly installed on the outer surface of an electric push cylinder, a slide rod slidably connected in the electric push cylinder, and a drill fixedly connected to the end of the slide rod.

[0010] Preferably, the direction adjusting mechanism comprises a direction adjusting gear cavity provided in the chassis, a direction adjusting driving gear shaft rotatably connected between the end walls of the direction adjusting gear cavity, the direction adjusting driving gear shaft being in power connection with a direction adjusting motor fixedly installed in the chassis, a direction adjusting driving gear fixedly installed on the outer surface of the direction adjusting driving gear shaft, the direction adjusting driving gear being in engagement with a direction adjusting driven gear, the direction adjusting driven gear being fixedly installed on the outer surface of a direction adjusting driven gear shaft, the direction adjusting driven gear shaft penetratingly and rotatably installed between the end walls of the direction adjusting gear cavity, the rotating frame being fixedly connected to the upper end of the direction adjusting gear cavity, and the chassis and the rotating frame being connected with a stabilizing ring.

[0011] Preferably, the support mechanism comprises a support slot provided on the bottom wall of the rotating frame, a support electric rotating shaft rotatably connected between the end walls of the support slot, a support electric push rod fixedly connected to the outer surface of the support electric rotating shaft, a support disc fixedly connected to the end of the support electric push rod, the support electric rotating shaft extending to the side wall of the rotating frame, a brake disc fixedly connected to the end of the support electric rotating shaft, a brake tooth inserted into the brake disc, the brake tooth being fixedly connected to the end of a brake electric push rod, the brake electric push rod being fixedly installed on the lower part of a brake electric push rod mounting plate, and the brake electric push rod mounting plate being fixedly installed on the side wall of the rotating frame.

[0012] Preferably, the position adjusting mechanism comprises a position adjusting sliding slot symmetrically provided on the rotating frame, a position adjusting screw rod rotatably connected between the end walls of the position adjusting sliding slot, a position adjusting nut block threadedly connected to the outer surface of the position adjusting screw rod, the position adjusting nut block being slidably connected between the end walls of the position adjusting sliding slot, a base fixedly connected to the upper part of the position adjusting nut block, the position adjusting screw rod extending into a position adjusting pulley cavity provided in the rotating frame, a position adjusting pulley fixedly connected to the outer surface of the position adjusting screw rod in the position adjusting pulley cavity, and the position adjusting pulleys being connected in transmission through a position adjusting transmission belt, one of the position adjusting screw rods being in power connection with a position adjusting motor fixedly installed in the rotating frame.

[0013] Compared with the prior art, the present application has the following beneficial effects: 1. The present application provides a coal mine electric support with a step-adjustable telescopic ratio, which adopts a self-locking device with a spring, when moved to a specified position, the stopper will enter the groove under the action of the spring, the stopper will tightly adhere to the top of the groove under the action of the spring, effectively preventing the sliding block from running around in the working process, and ensuring the stability of the support in the working process.

[0014] 2. The application provides a coal mine electric support with a step-adjustable telescopic ratio, which is provided with a plurality of grooves on a top beam, and the sliding block can be self-locked at a specified position, each groove represents a different telescopic ratio, and the step-adjustable telescopic ratio is realized.

[0015] 3. The application provides a coal mine electric support with a step-adjustable telescopic ratio, when the electric support is transported, the guide rail sliding block mechanism is moved to the groove position, the supporting electric cylinder is retracted, at this time, the minimum height is reached, when the supporting electric cylinder is extended, the maximum height is reached, the small supporting electric cylinder meets the requirement of large initial supporting force by using the force receiving characteristics of the three-force rod at the critical position, and different mining height requirements can be met by changing the groove position.

[0016] 4. The application provides a coal mine electric support with a step-adjustable telescopic ratio, when the support needs to meet more telescopic ratios, the groove position and the number of grooves can be changed to meet various mining height requirements. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, illustrate the application, and are used to explain the application together with the embodiments of the application, and do not constitute a limitation on the application.

[0018] In the drawings: Figure 1 It is a first direction structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 2 It is a second direction structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 3 It is a third direction structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 4 It is a fourth direction structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 5 It is a fifth direction structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 6 It is a sixth direction structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 7 It is a first local structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 8 It is a second local structure schematic view of a coal mine electric support with a step-adjustable telescopic ratio in the application. Figure 9This is a schematic diagram of the third partial structure of a coal mine electric support with a stepped adjustable telescopic ratio according to the present invention. Figure 10 This is a schematic diagram of the first direction structure of the adjustable support mechanism in this invention; Figure 11 This is a schematic diagram of the second direction structure of the adjustable support mechanism in this invention; Figure 12 This is a schematic diagram of the third-direction structure of the adjustable support mechanism in this invention; Figure 13 This is a schematic diagram of the seventh direction structure of a coal mine electric support with a stepped adjustable telescopic ratio according to the present invention. Figure 14 for Figure 13 Schematic diagram of the cross-sectional structure at point AA; Figure 15 for Figure 13 Schematic diagram of the cross-sectional structure at point BB; Figure 16 for Figure 15 A schematic diagram of the cross-sectional structure at the CC section; Figure 17 for Figure 13 Schematic diagram of the cross-sectional structure at point DD; Figure 18 for Figure 14 Enlarged structural diagram at point E; Figure 19 A schematic diagram illustrating the calculation principle of the telescopic ratio of an electrically operated coal mine support with a stepped adjustable telescopic ratio in this invention; Figure 20 This is a schematic diagram showing the position of the top beam groove of a coal mine electric support with a stepped adjustable telescopic ratio, as described in this invention.

[0019] In the figure: 1 - base frame, 2 - rotating frame, 3 - brake disc, 4 - brake teeth, 5 - brake electric push rod, 6 - brake electric push rod mounting plate, 7 - position adjustment sliding groove, 8 - base, 9 - upper hinged block, 10 - upper connecting rod, 11 - lower connecting rod, 12 - connecting beam, 13 - support electric cylinder, 14 - hinged beam, 15 - fixed plate, 16 - cleaning frame, 17 - electric push cylinder, 18 - sliding rod, 19 - drill bit, 20 - movement plate, 21 - movement toothed belt, 22 - movement frame, 23 - cleaning brush, 24 - movement support frame, 25 - extension frame, 26 - extension rotating shaft, 27 - extension electric push rod connecting frame, 28 - extension electric push rod, 29 - bottom plate, 30 - horizontal electric cylinder connecting frame, 31 - sliding block, 32 - guide rail, 33 - cleaning driven pulley, 34 - cleaning transmission belt, 35 - cleaning driving pulley, 36 - front connecting rod, 37 - position adjustment screw, 38 - fixed frame, 39 - leveling electric cylinder, 40 - worm shaft, 41 - cleaning rotating shaft, 42 - anti-movement gear cavity, 43 - worm wheel, 44 - worm, 45 - movement gear, 46 - movement gear shaft, 47 - cleaning gear, 48 - cleaning gear shaft, 49 - anti-movement driven gear, 50 - anti-movement driving gear, 51 - anti-movement gear shaft, 52 - position adjustment nut block, 53 - stabilizing ring, 54 - direction adjustment driven gear, 55 - direction adjustment driven gear shaft, 56 - direction adjustment driving gear shaft, 57 - direction adjustment driving gear, 58 - support electric push rod, 59 - support electric rotating shaft, 60 - sliding groove, 61 - slot, 62 - direction adjustment gear cavity, 63 - position adjustment pulley cavity, 64 - position adjustment pulley, 65 - position adjustment transmission belt, 66 - locking cylinder, 67 - locking insertion rod, 68 - spring, 69 - pull rod connecting block, 70 - pull rod, 71 - pull rope, 72 - mounting frame, 73 - winding drum, 74 - locking electric rotating shaft, 75 - support slot, 76 - cleaning gear cavity, 77 - movement gear cavity, 78 - worm cavity, 79 - extension plate, 80 - extension plate connecting block, 81 - horizontal electric cylinder, 82 - through hole, 83 - top beam, 85 - support disc. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] As Figures 1-20As shown, the present application provides a coal mine electric support with adjustable telescopic ratio, comprising a chassis 1, the lower part of the chassis 1 is provided with a movement mechanism, the movement mechanism is used to drive the chassis 1 to move, the movement mechanism is connected with a cleaning mechanism, the cleaning mechanism is used to remove the impurities adhered to the track during movement, preventing affecting movement, the chassis 1 is provided with a movement prevention mechanism, the movement prevention mechanism is used to prevent movement during support, the chassis 1 is connected with a rotating frame 2 through a direction adjusting mechanism, the lower part of the rotating frame 2 is provided with a support mechanism, the support mechanism is used to support the rotating frame 2, increasing stability during support, the upper part of the rotating frame 2 is provided with a position adjusting mechanism, the position adjusting mechanism is used to adjust the position of support, the position adjusting mechanism is connected with an adjustable support mechanism, the adjustable support mechanism is used to support in the coal mine tunnel, and the telescopic ratio of support can be adjusted during support; During work, the movement mechanism moves, thereby driving the chassis 1 to move, moving to the position to be supported, during movement, the cleaning mechanism moves, thereby cleaning the surface of the movement plate 20 and the movement toothed belt 21, ensuring movement efficiency, after moving to the corresponding position, the movement prevention mechanism moves, thereby fixing the chassis 1, preventing movement, the direction adjusting mechanism moves, thereby adjusting the direction of the rotating frame 2, after adjusting to the appropriate direction, the support mechanism moves, thereby supporting the rotating frame 2, increasing overall stability, the position adjusting mechanism moves, thereby driving the base 8 to move, thereby adjusting the position of support, the adjustable support mechanism moves, thereby supporting, and the telescopic ratio of support can be adjusted during support.

[0022] Beneficially, the adjustable support mechanism comprises a base 8, one side end of a hinged beam 14 is hinged on the base 8, the other side end of the hinged beam 14 is hinged with one side end of a connecting beam 12, the other side end of the connecting beam 12 is hinged with a top beam 83, one side end of a lower connecting rod 11 is hinged on the base 8, the other side end of the lower connecting rod 11 is hinged with one side end of an upper connecting rod 10, the other side end of the upper connecting rod 10 is hinged with an upper hinge block 9, the upper hinge block 9 is symmetrically fixedly installed on the lower part of a bottom plate 29, one side end of a front connecting rod 36 is hinged on the base 8, the other side end of the front connecting rod 36 is hinged with the connecting beam 12, one side end of a support electric cylinder 13 is fixedly connected on the front connecting rod 36, the other side end of the support electric cylinder 13 is hinged with the connection part of the upper connecting rod 10 and the lower connecting rod 11, one side end of a leveling electric cylinder 39 is hinged on the connecting beam 12, the other side end of the leveling electric cylinder 39 is hinged with a fixed frame 38, the fixed frame 38 is fixedly installed on the lower part of the top beam 83, one side end of a horizontal electric cylinder 81 is hinged on the fixed frame 38, the other side end of the horizontal electric cylinder 81 is hinged with a horizontal electric cylinder connecting frame 30, the horizontal electric cylinder connecting frame 30 is fixedly installed on the bottom of the bottom plate 29 between the extension electric push rods 28, an extension frame 25 is fixedly connected on the lower side position of the front part of the top beam 83, an extension rotating shaft 26 is rotationally connected with the extension frame 25, an extension plate 79 is fixedly connected on the outer surface of the extension rotating shaft 26, the extension plate 79 is horizontally connected with the top beam 83, an extension plate connecting block 80 is fixedly connected on the bottom wall of the extension plate 79, the extension plate connecting block 80 is hinged with one side end of the extension electric push rod 28, the other side end of the extension electric push rod 28 is hinged with an extension electric push rod connecting frame 27, the extension electric push rod connecting frame 27 is fixedly installed on the bottom wall of the top beam 83, a locking mechanism is connected on the bottom plate 29, the locking mechanism is used for locking after supporting adjustment; In work, the extension electric push rod 28 is powered, so as to push the extension plate connecting block 80 to move, so as to push the extension plate 79 to rotate to the horizontal position, and the extension plate 79 is connected with the top beam 83, the area of support is increased, the leveling electric cylinder 39 is powered, so as to push the fixed frame 38 to move, so as to push the top beam 83 to move to the horizontal position, the horizontal electric cylinder 81 is powered, so as to push the horizontal electric cylinder connecting frame 30 to move, so as to push the bottom plate 29 to move to the corresponding position, the support electric cylinder 13 is powered, so as to push the upper connecting rod 10 to move with the lower connecting rod 11; The calculation model of the telescopic ratio of the electric support is as follows: The distance from the upper connecting rod hinge point to the lower connecting rod hinge point is: ; The total height of the electric support is: ; Δh is the length of the total height of the support minus the distance between the hinge points of the upper and lower links.

[0023] A step-adjustable electric support with a telescopic ratio, when the position of the slot is fixed, the support height is smallest when the electric cylinder is not extended, and the support height is largest when it is fully extended. The structure of the support and the position of the top beam slot and the telescopic ratio have a great relationship. The longer the upper link, the shorter the lower link, the larger the telescopic ratio, and the farther the position of the slot from the middle of the top beam, the larger the telescopic ratio. The position of the slot is shown in the attached drawing. The hinge point of the upper link of a common electric support is located in the middle of the top beam, and the telescopic ratio is small. The hinge point of the upper link of a step-adjustable electric support with a telescopic ratio can be moved, which greatly improves the telescopic ratio. Taking a support with a maximum height range of 4500mm as an example.

[0024] The support is Δh = 724mm, , when the guide rail slider mechanism is located in the first slot 61, l1 = 120mm, and the support is at the lowest height, , the result is = 2500mm, the support is at the maximum height, , at this time = 3940mm, and the telescopic ratio is 1.58 after calculation.

[0025] When the guide rail slider mechanism is located in the second slot 61, l2 = 180mm, and the support is at the lowest height, , the result is = 2800mm, the support is at the maximum height, , at this time = 4000mm, and the telescopic ratio is 1.43 after calculation.

[0026] When the guide rail slider mechanism is located in the third slot 61, l3 = 440mm, and the support is at the lowest height, , the result is = 3440mm, the support is at the maximum height, , at this time = 4200mm, and the telescopic ratio is 1.22 after calculation.

[0027] When the guide rail slider mechanism is located in the fourth slot 61, l4 = 1237mm, and the support is at the lowest height, , , the results are as follows =4076.82mm, the support is at the maximum height, , , at this time =4500mm, the telescopic ratio is 1.1.

[0028] The maximum height of the support is 4500mm, the minimum height is 2500, and the overall telescopic ratio can reach 1.8.

[0029] The connecting rod hinge point of the common electric support is not movable and is located at the fourth slot 61, and the telescopic ratio is 1.1.

[0030] It is calculated that the telescopic ratio of the adjustable telescopic electric support in this example is increased by 63.6% compared with that of the common support.

[0031] Advantageously, the locking mechanism comprises a sliding block 31 fixedly connected to the upper part of the bottom plate 29, the sliding block 31 is slidingly connected to a guide rail 32, the guide rail 32 is symmetrically detachably connected to the bottom of the top beam 83, a sliding groove 60 is arranged on the bottom wall of the top beam 83 between the guide rails 32, a plurality of slots 61 are arranged on the bottom wall of the sliding groove 60, a locking cylinder 66 is fixedly connected to the upper part of the bottom plate 29, a locking plug rod 67 is slidingly connected to the locking cylinder 66, the locking plug rod 67 is inserted into the slot 61, a spring 68 is clamped between the locking plug rod 67 and the locking cylinder 66, the spring 68 is located in the locking cylinder 66, the locking plug rod 67 passes through a through hole 82, the through hole 82 is processed through the bottom plate 29, a mounting frame 72 is fixedly connected to the lower part of the bottom plate 29, a locking electric rotating shaft 74 is rotatably connected between the mounting frames 72, a winding drum 73 is fixedly connected to the outer surface of the locking electric rotating shaft 74, a pull rope 71 is woundly connected to the outer surface of the winding drum 73, a pull rod 70 is connected to the end of the pull rope 71, the pull rod 70 is hung on a pull rod connecting block 69, and the pull rod connecting block 69 is fixedly installed on the lower part of the locking plug rod 67. In work, the bottom plate 29 moves, thereby driving the locking cylinder 66 to move, thereby driving the locking plug rod 67 to move to the lower side of the corresponding slot 61, so that the locking electric rotating shaft 74 rotates, thereby driving the winding drum 73 to rotate, thereby driving the pull rope 71 to send, so that the spring 68 resets, pushes the locking plug rod 67 to move upwardly and inserts into the slot 61, thereby driving the pull rod connecting block 69 to move upwardly, thereby driving the pull rod 70 to move upwardly, thereby driving the pull rope 71 to move, the spacing between adjacent slots 61 is different, and the locking plug rod 67 is inserted into different slots 61, so that the telescopic ratio is adjusted.

[0032] Beneficially, the movement mechanism comprises a movement support frame 24 fixedly connected to the lower part of the chassis 1, a movement frame 22 fixedly connected to the end of the movement support frame 24, a movement gear cavity 77 arranged in the movement frame 22, a movement gear shaft 46 rotatably connected between the end walls of the movement gear cavity 77, the movement gear shaft 46 being in power connection with a movement motor fixedly installed in the movement frame 22, a movement gear 45 fixedly connected to the outer surface of the movement gear shaft 46, the movement gear 45 being in engagement with a movement toothed belt 21, the movement toothed belt 21 being in sliding connection with the end walls of the movement frame 22, and a plurality of movement plates 20 uniformly fixedly connected to the outer surface of the movement toothed belt 21. In operation, the movement motor is started to drive the movement gear shaft 46 to rotate, thereby driving the movement gear 45 to rotate, the movement gear 45 being in engagement with the movement toothed belt 21 to drive the movement toothed belt 21 to rotate, thereby driving the movement plates 20 to move, and driving the chassis 1 to move.

[0033] Beneficially, the cleaning mechanism comprises a cleaning gear cavity 76 arranged in the movement frame 22, a cleaning gear shaft 48 rotatably connected through the end walls of the cleaning gear cavity 76, a cleaning gear 47 fixedly connected to the outer surface of the cleaning gear shaft 48, the cleaning gear 47 being in engagement with the movement toothed belt 21, a cleaning driving pulley 35 fixedly connected to the end of the cleaning gear shaft 48, the cleaning driving pulley 35 being in driving connection with a cleaning driven pulley 33 through a cleaning transmission belt 34, the cleaning driven pulley 33 being fixedly installed at the end of a worm shaft 40, the worm shaft 40 being rotatably connected to a cleaning frame 16, the worm shaft 40 extending into a worm cavity 78 arranged in the cleaning frame 16, the cleaning frame 16 being fixedly installed at the lower part of a fixed plate 15, the fixed plate 15 being fixedly connected to the side wall of the chassis 1, the outer surface of the worm shaft 40 in the worm cavity 78 being fixedly connected with a worm 44, the worm 44 being in engagement with a worm wheel 43, the worm wheel 43 being fixedly installed on the outer surface of a cleaning rotating shaft 41, the cleaning rotating shaft 41 being rotatably installed on the end walls of the worm cavity 78, and a plurality of cleaning brushes 23 being fixedly connected to the outer surface of the cleaning rotating shaft 41. When working, the moving toothed belt 21 rotates, and the moving toothed belt 21 meshes with the cleaning gear 47, thereby driving the cleaning gear 47 to rotate, thereby driving the cleaning gear shaft 48 to rotate, thereby driving the cleaning driving pulley 35 to rotate, the cleaning driving pulley 35 and the cleaning driven pulley 33 are connected and driven through the cleaning transmission belt 34, thereby driving the worm shaft 40 to rotate, thereby driving the worm 44 to rotate, the worm 44 meshes with the worm wheel 43, thereby driving the cleaning rotating shaft 41 to rotate, thereby driving the cleaning brush 23 to rotate, thereby cleaning the surface of the moving toothed belt 21 and the moving plate 20.

[0034] Beneficially, the anti-moving mechanism comprises an anti-moving gear cavity 42 provided in the chassis 1, an anti-moving gear shaft 51 rotatably connected between the end walls of the anti-moving gear cavity 42, the anti-moving gear shaft 51 is in power connection with an anti-moving motor fixedly installed in the chassis 1, an anti-moving driving gear 50 fixedly connected to the outer surface of the anti-moving gear shaft 51, the anti-moving driving gear 50 meshes with an anti-moving driven gear 49, the anti-moving driven gear 49 is fixedly installed on the outer surface of the electric push cylinder 17, a slide rod 18 is slidably connected in the electric push cylinder 17, a drill bit 19 is fixedly connected to the end of the slide rod 18; When working, the chassis 1 moves to the corresponding position, the anti-moving motor is started, thereby driving the anti-moving gear shaft 51 to rotate, thereby driving the anti-moving driving gear 50 to rotate, the anti-moving driving gear 50 meshes with the anti-moving driven gear 49, thereby driving the electric push cylinder 17 to rotate, thereby driving the slide rod 18 to rotate, thereby driving the drill bit 19 to rotate, the electric push cylinder 17 is energized, thereby pushing the slide rod 18 to move downward, thereby driving the drill bit 19 to rotate and move downward into the roadway stratum, thereby achieving fixation and preventing movement.

[0035] Beneficially, the direction adjusting mechanism comprises a direction adjusting gear cavity 62 provided in the chassis 1, a direction adjusting driving gear shaft 56 rotatably connected between the end walls of the direction adjusting gear cavity 62, the direction adjusting driving gear shaft 56 is in power connection with a direction adjusting motor fixedly installed in the chassis 1, a direction adjusting driving gear 57 is fixedly installed on the outer surface of the direction adjusting driving gear shaft 56, the direction adjusting driving gear 57 meshes with a direction adjusting driven gear 54, the direction adjusting driven gear 54 is fixedly installed on the outer surface of a direction adjusting driven gear shaft 55, the direction adjusting driven gear shaft 55 is rotatably installed between the end walls of the direction adjusting gear cavity 62, the rotating frame 2 is fixedly connected to the upper end of the direction adjusting gear cavity 62, and a stabilizing ring 53 is connected between the chassis 1 and the rotating frame 2; When working, the direction adjusting motor is started to drive the direction adjusting driving gear 57 to rotate, the direction adjusting driving gear 57 meshes with the direction adjusting driven gear 54 to drive the direction adjusting driven gear shaft 55 to rotate, and the direction adjusting driven gear shaft 55 drives the rotating frame 2 to rotate.

[0036] Beneficially, the support mechanism comprises a support groove 75 provided on the bottom wall of the rotating frame 2, a support electric rotating shaft 59 rotatably connected between the end walls of the support groove 75, a support electric push rod 58 fixedly connected to the outer surface of the support electric rotating shaft 59, a support disc 85 fixedly connected to the end of the support electric push rod 58, the support electric rotating shaft 59 extending to the side wall of the rotating frame 2, a brake disc 3 fixedly connected to the end of the support electric rotating shaft 59, a brake tooth 4 inserted into the brake disc 3, the brake tooth 4 fixedly connected to the end of a brake electric push rod 5, the brake electric push rod 5 fixedly installed on the lower part of a brake electric push rod mounting plate 6, and the brake electric push rod mounting plate 6 fixedly installed on the side wall of the rotating frame 2. When working, the support electric rotating shaft 59 is rotated to drive the support electric push rod 58 to rotate to the vertical direction, after rotating to the vertical direction, the brake electric push rod 5 is powered to drive the brake tooth 4 to move downward to be inserted into the brake disc 3, preventing the support electric rotating shaft 59 from rotating, the support electric push rod 58 is powered to drive the support disc 85 to move downward to contact with the roadway bottom wall, thereby supporting and increasing stability.

[0037] Beneficially, the position adjusting mechanism comprises a position adjusting sliding groove 7 symmetrically provided on the rotating frame 2, a position adjusting lead screw 37 rotatably connected between the end walls of the position adjusting sliding groove 7, a position adjusting nut block 52 threadedly connected to the outer surface of the position adjusting lead screw 37, the position adjusting nut block 52 slidingly connected between the end walls of the position adjusting sliding groove 7, a base 8 fixedly connected to the upper part of the position adjusting nut block 52, the position adjusting lead screw 37 extending into a position adjusting pulley cavity 63 provided in the rotating frame 2, a position adjusting pulley 64 fixedly connected to the outer surface of the position adjusting lead screw 37 in the position adjusting pulley cavity 63, and a position adjusting transmission belt 65 connecting and driving the position adjusting pulleys 64 through the position adjusting transmission belt 65, one of the position adjusting lead screws 37 being drivingly connected to a position adjusting motor fixedly installed in the rotating frame 2. When working, the position adjusting motor is started to drive the position adjusting lead screw 37 to rotate, the position adjusting pulleys 64 are driven to rotate through the position adjusting transmission belt 65, all the position adjusting lead screws 37 are driven to rotate, the position adjusting nut block 52 is driven to move, the base 8 is driven to move, and the position of the support is adjusted.

[0038] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions from each other, without necessarily requiring or implying any actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, changes, and variations can be made in the embodiments without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. A stepped, adjustable telescopic ratio electric support for coal mines, characterized in that: The system includes a base frame (1), a motion mechanism at the bottom of the base frame (1) for driving the base frame (1) to move, a cleaning mechanism connected to the motion mechanism for removing impurities adhering to the track during movement to prevent them from affecting the movement, an anti-movement mechanism on the base frame (1) for preventing movement during support, a rotating frame (2) connected to the base frame (1) via a direction adjustment mechanism, a support mechanism at the bottom of the rotating frame (2) for supporting the rotating frame (2) and increasing stability during support, a position adjustment mechanism at the top of the rotating frame (2) for adjusting the position of the support, and an adjustable support mechanism connected to the position adjustment mechanism for providing support in coal mine roadways and for adjusting the extension ratio of the support during support.

2. The electrically operated coal mine support with adjustable telescopic ratio according to claim 1, characterized in that: The adjustable support mechanism includes a base (8), on which one end of a hinge beam (14) is hinged. The other end of the hinge beam (14) is hinged to one end of a connecting beam (12). A top beam (83) is hinged to the other end of the connecting beam (12). On the base (8), one end of a lower connecting rod (11) is hinged. The other end of the lower connecting rod (11) is hinged to one end of an upper connecting rod (10). The other end of the upper connecting rod (10) is hinged to an upper hinge block (9). The upper hinge block (9) is symmetrically fixed. Installed on the lower part of the base plate (29), the base (8) has one end of the front connecting rod (36) hinged to it, the other end of the front connecting rod (36) hinged to the connecting beam (12), one end of the supporting electric cylinder (13) fixedly connected to the front connecting rod (36), the other end of the supporting electric cylinder (13) hinged to the connection between the upper connecting rod (10) and the lower connecting rod (11), one end of the leveling electric cylinder (39) hinged to the connecting beam (12), the other end of the leveling electric cylinder (39) hinged to the fixed frame (38), the fixed... A fixed frame (38) is fixedly installed on the lower part of the top beam (83). One end of a horizontal electric cylinder (81) is hinged to the fixed frame (38), and the other end of the horizontal electric cylinder (81) is hinged to a horizontal electric cylinder connecting frame (30). The horizontal electric cylinder connecting frame (30) is fixedly installed on the bottom of the base plate (29) between the extension electric push rods (28). An extension frame (25) is fixedly connected to the lower front part of the top beam (83). An extension shaft (26) is rotatably connected to the extension frame (25). The extension shaft (26) is externally connected to the extension shaft (26). An extension plate (79) is fixedly connected to the surface. When the extension plate (79) is horizontal, it is joined together with the top beam (83). An extension plate connecting block (80) is fixedly connected to the bottom wall of the extension plate (79). The extension plate connecting block (80) is hinged to one end of the extension electric push rod (28). The other end of the extension electric push rod (28) is hinged to the extension electric push rod connecting frame (27). The extension electric push rod connecting frame (27) is fixedly installed on the bottom wall of the top beam (83). A locking mechanism is connected to the bottom plate (29).

3. The electrically operated coal mine support with adjustable telescopic ratio according to claim 2, characterized in that: The locking mechanism includes sliders (31) symmetrically fixedly connected to the upper part of the base plate (29). The sliders (31) are slidably connected to the guide rails (32). The guide rails (32) are symmetrically and detachably connected to the bottom of the top beam (83). The bottom wall of the top beam (83) between the guide rails (32) is provided with a sliding groove (60). The bottom wall of the sliding groove (60) is provided with a plurality of slots (61). A locking cylinder (66) is fixedly connected to the upper part of the base plate (29). A locking rod (67) is slidably connected to the locking cylinder (66). The locking rod (67) is inserted into the slot (61). A spring (68) is engaged between the locking rod (67) and the locking cylinder (66). The spring (68) is located inside the locking cylinder (66), the locking rod (67) passes through the through hole (82), the through hole (82) is machined through the base plate (29), the base plate (29) is symmetrically fixedly connected to the lower part of the mounting bracket (72), the mounting bracket (72) is rotatably connected to the locking electric shaft (74), the outer surface of the locking electric shaft (74) is fixedly connected to the drum (73), the outer surface of the drum (73) is wound with a pull rope (71), the end of the pull rope (71) is connected to a pull rod (70), the pull rod (70) is hooked on the pull rod connecting block (69), the pull rod connecting block (69) is fixedly installed on the lower part of the locking rod (67).

4. The electrically operated coal mine support with adjustable telescopic ratio according to claim 3, characterized in that: The motion mechanism includes a motion support frame (24) symmetrically fixedly connected to the lower part of the base frame (1). A motion frame (22) is fixedly connected to the end of the motion support frame (24). A motion gear cavity (77) is provided inside the motion frame (22). A motion gear shaft (46) is rotatably connected between the end walls of the motion gear cavity (77). The motion gear shaft (46) is poweredly connected to a motion motor fixedly installed in the motion frame (22). A motion gear (45) is fixedly connected to the outer surface of the motion gear shaft (46). The motion gear (45) meshes with a motion toothed belt (21). The motion toothed belt (21) is slidably connected to the end wall of the motion frame (22). Several motion plates (20) are uniformly fixedly connected to the outer surface of the motion toothed belt (21).

5. A coal mine electric support with adjustable telescopic ratio according to claim 4, characterized in that: The cleaning mechanism includes a cleaning gear cavity (76) provided inside the motion frame (22). A cleaning gear shaft (48) is rotatably connected through the end wall of the cleaning gear cavity (76). A cleaning gear (47) is fixedly connected to the outer surface of the cleaning gear shaft (48). The cleaning gear (47) meshes with the motion toothed belt (21). A cleaning drive pulley (35) is fixedly connected to the end of the cleaning gear shaft (48). The cleaning drive pulley (35) and the cleaning driven pulley (33) are connected and driven by a cleaning transmission belt (34). The cleaning driven pulley (33) is fixedly installed at the end of the worm shaft (40). The worm shaft (40) is rotatably connected to the cleaning drive pulley (21). The worm shaft (40) extends into the worm cavity (78) within the cleaning frame (16). The cleaning frame (16) is fixedly installed on the lower part of the fixing plate (15). The fixing plate (15) is fixedly connected to the side wall of the base frame (1). A worm (44) is fixedly connected to the outer surface of the worm shaft (40) within the worm cavity (78). The worm (44) meshes with a worm wheel (43). The worm wheel (43) is fixedly installed on the outer surface of the cleaning shaft (41). The cleaning shaft (41) is rotatably installed through the end wall of the worm cavity (78). Several cleaning brushes (23) are fixedly connected to the outer surface of the cleaning shaft (41).

6. A coal mine electric support with adjustable telescopic ratio according to claim 5, characterized in that: The anti-movement mechanism includes an anti-movement gear cavity (42) provided in the base frame (1), an anti-movement gear shaft (51) rotatably connected between the end walls of the anti-movement gear cavity (42), the anti-movement gear shaft (51) being poweredly connected to an anti-movement motor fixedly installed in the base frame (1), an anti-movement drive gear (50) being fixedly connected to the outer surface of the anti-movement gear shaft (51), the anti-movement drive gear (50) meshing with an anti-movement driven gear (49), the anti-movement driven gear (49) being fixedly installed on the outer surface of an electric push cylinder (17), a slide rod (18) being slidably connected in the electric push cylinder (17), and a drill bit (19) being fixedly connected to the end of the slide rod (18).

7. A coal mine electric support with adjustable telescopic ratio according to claim 6, characterized in that: The direction adjustment mechanism includes a direction adjustment gear cavity (62) provided in the base frame (1), a direction adjustment drive gear shaft (56) rotatably connected between the end walls of the direction adjustment gear cavity (62), the direction adjustment drive gear shaft (56) being poweredly connected to a direction adjustment motor fixedly installed in the base frame (1), a direction adjustment drive gear (57) being fixedly installed on the outer surface of the direction adjustment drive gear shaft (56), the direction adjustment drive gear (57) meshing with a direction adjustment driven gear (54), the direction adjustment driven gear (54) being fixedly installed on the outer surface of the direction adjustment driven gear shaft (55), the direction adjustment driven gear shaft (55) being rotatably installed through the end walls of the direction adjustment gear cavity (62), a rotating frame (2) being fixedly connected to the upper end of the direction adjustment gear cavity (62), and a stabilizing ring (53) being connected between the base frame (1) and the rotating frame (2).

8. A coal mine electric support with adjustable telescopic ratio according to claim 7, characterized in that: The support mechanism includes a support groove (75) on the bottom wall of the rotating frame (2), a support electric shaft (59) rotatably connected between the end walls of the support groove (75), a support electric push rod (58) fixedly connected to the outer surface of the support electric shaft (59), a support disc (85) fixedly connected to the end of the support electric push rod (58), the support electric shaft (59) extends to the side wall of the rotating frame (2), a brake disc (3) is fixedly connected to the end of the support electric shaft (59), a brake tooth (4) is inserted into the brake disc (3), the brake tooth (4) is fixedly connected to the end of the brake electric push rod (5), the brake electric push rod (5) is fixedly installed on the lower part of the brake electric push rod mounting plate (6), and the brake electric push rod mounting plate (6) is fixedly installed on the side wall of the rotating frame (2).

9. A coal mine electric support with adjustable telescopic ratio according to claim 8, characterized in that: The position adjustment mechanism includes symmetrically arranged position adjustment grooves (7) on the rotating frame (2). A position adjustment screw (37) is rotatably connected between the end walls of the position adjustment grooves (7). A position adjustment nut block (52) is threadedly connected to the outer surface of the position adjustment screw (37). The position adjustment nut block (52) is slidably connected between the end walls of the position adjustment grooves (7). A base (8) is fixedly connected to the upper part of the position adjustment nut block (52). The position adjustment screw (37) extends into a position adjustment pulley cavity (63) located in the rotating frame (2). A position adjustment pulley (64) is fixedly connected to the outer surface of the position adjustment screw (37) in the position adjustment pulley cavity (63). The position adjustment pulleys (64) are connected and driven by a position adjustment transmission belt (65). One of the position adjustment screws (37) is poweredly connected to a position adjustment motor fixedly installed in the rotating frame (2).

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