Hydraulic chain tightening device gearbox for scraper conveyor and reversed loader

Abstract

The utility model discloses a hydraulic chain tensioning device gearbox for a scraper conveyor and a reversed loader, which relates to the technical field of chain tensioning and comprises a bottom plate, a fixing frame is fixedly connected to the upper surface of the bottom plate, an input gear shaft and a swing shaft are rotatably connected to the inner wall of the fixing frame, and an input gear is fixedly connected to the outer surface of the input gear shaft. The outer surface of the input gear is fixedly connected with a swing rod and a shifting fork. According to the hydraulic chain tightening device for the scraper conveyor and the reversed loader, the handle can be used for controlling the chain tightener and the main drive gearbox to be separated and meshed so as to achieve the working state and the chain tightening state, rounding treatment is conducted on the upper plane of the side face of a gear in a gear box of the hydraulic chain tightening device for the scraper conveyor and the reversed loader, and therefore face contact is changed into point contact. The hydraulic chain tightening device for the scraper conveyor and the reversed loader effectively solves the tooth abutting phenomenon when internal gears of a gear box of the hydraulic chain tightening device for the scraper conveyor and the reversed loader are meshed, so that the chain tightening work of the scraper conveyor and the reversed loader is more convenient, time-saving and labor-saving, and the equipment damage probability is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain tensioning technical field, concretely is hydraulic pressure chain tensioning device gear box for scraper conveyor and transfer machine. BACKGROUND

[0002] The scraper conveyor is important transport equipment in the coal transportation process, and is mainly used for longwall coal mining face and bears the transportation task, in order to make the scraper conveyor and transfer machine safe operation, the scraper chain should have certain tension, usually adopts chain tensioner to give the scraper chain certain pre-tightening force, when tensioning, one end of the scraper chain is fixed on the head frame side plate or the chain blocking chute, the other end passes through the head sprocket, makes the sprocket reverse, and the scraper chain is immediately pulled tight, when the scraper chain tension is appropriate, the chain tensioner prevents the scraper chain from loosening, and the two scraper chain heads are connected well, and the chain tensioner releases the brake.

[0003] The hydraulic chain tensioner in the prior art is one of the common chain tensioners, the chain tensioner is provided with a gear box, and the gear box is controlled by a handle to separate and engage the chain tensioner and the main drive gearbox, to realize the working state and the chain tensioning state, but the gear (idler) inside the gear box for engaging transmission has a plane on the side, which causes the gear to easily appear the top tooth phenomenon during sliding engagement, so that the gear cannot be normally engaged or damaged and affects the subsequent chain tensioning work, therefore, the hydraulic chain tensioning device gear box for the scraper conveyor and the transfer machine is provided to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a hydraulic chain tensioning device gear box for the scraper conveyor and the transfer machine.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: the hydraulic chain tensioning device gear box for the scraper conveyor and the transfer machine, including the bottom plate, the upper surface of the bottom plate is fixedly connected with the fixed frame, the inner wall of fixed frame is rotatably connected with input gear shaft and swing axle, the outer surface of input gear shaft is fixedly connected with input gear, the outer surface of input gear is fixedly connected with swing bar and shift fork, the inner wall of fixed frame is slidably connected with guide shaft and guide rod, the front surface of fixed frame is fixedly connected with locating block and muffle cover, and the guide shaft and guide rod all abut with the locating block, the outer surface of guide shaft is slidably connected with the idler of input gear through the guide sleeve, and the side surface of input gear and idler is all treated with rounding, the outer surface of guide rod is slidably connected with the sliding block that is hinged with shift fork, the inner wall of swing bar is slidably connected with the bolt for position limitation, the upper surface of fixed frame is fixedly connected with the cover plate.

[0006] Further, one side of the swing rod is fixedly connected with a positioning handle for driving the swing rod to swing, through the positioning handle, the user can conveniently drive the swing rod to swing, the upper surface of the bottom plate is provided with a plurality of mounting holes for fixing the hydraulic chain tensioning device gear box, the fixing bolt is passed through the mounting hole and screwed into the reserved hole provided in the installation position of the hydraulic chain tensioning device gear box of the scraper conveyor and the rehandler, so that the installation and fixation can be realized.

[0007] Further, the inner wall of the fixed frame is inlaid with two first bearings, and the inner ring of the first bearing is fixed with the outer surface of the input gear shaft, through the first bearing, the input gear can rotate more stably, and the resistance of the input gear in rotation is reduced, so that the jamming and swinging of the input gear in use is avoided.

[0008] Further, the inner wall of the idler is inlaid with a second bearing, and the inner ring of the second bearing is engaged with the outer surface of the sliding sleeve, through the second bearing, the idler can rotate more stably, and the resistance of the idler in rotation is reduced, so that the jamming and swinging of the idler in use is avoided.

[0009] Further, the inner walls of the swing shaft and the bolt are threadedly connected with first lifting ring screws, and the outer portion of the bottom plate is provided with fixed chains respectively connected with the first lifting ring screws, through the first lifting ring screws and the fixed chains, the bolt can be limited and supported, so that the loss of the bolt is prevented.

[0010] Further, the upper surface of the cover plate is threadedly connected with two symmetrically arranged second lifting ring screws for hoisting the hydraulic chain tensioning device gear box, through the second lifting ring screws, the hydraulic chain tensioning device gear box can be conveniently hoisted and moved, so that the convenience in use is improved.

[0011] Further, one side of the fixed frame is fixedly connected with an indicator for indicating the working state of the hydraulic chain tensioning device gear box, through the indicator, the user can conveniently and quickly distinguish the working state of the hydraulic chain tensioning device gear box.

[0012] Compared with the prior art, the hydraulic chain tensioning device gear box for the scraper conveyor and the rehandler has the following beneficial effects:

[0013] 1. The utility model discloses a handle control tight chain device and the separation and meshing of main drive gearbox can realize the working state and tight chain state, and the gear (idler) side plane in the gear box of the hydraulic tight chain device for scraper conveyor and transfer machine is treated, which changes the surface contact into point contact, so that the phenomenon of the top tooth of the gear in the gear box of the hydraulic tight chain device for scraper conveyor and transfer machine is effectively solved, and the tight chain work of the scraper conveyor and transfer machine is more convenient and time and labor saving, and the probability of equipment damage is reduced

[0014] 2. The utility model discloses a positioning handle can conveniently drive swing lever to swing, installation hole can conveniently install and fix the position of the gear box of hydraulic tight chain device, first bearing can make input gear more stable when rotating and reduce the resistance of input gear when rotating, so as to avoid the jam and swing of input gear in the process of using, second bearing can make idler more stable when rotating and reduce the resistance of idler when rotating, so as to avoid the jam and swing of idler in the process of using, first lifting ring screw and fixed chain can limit the support of bolt, so as to prevent the loss of bolt, second lifting ring screw can conveniently hoist and move the gear box of hydraulic tight chain device, and the sign can conveniently distinguish the working state of the gear box of hydraulic tight chain device for user. DRAWINGS

[0015] Figure 1 It is the front view schematic diagram of the utility model three-dimensional structure;

[0016] Figure 2 It is the gear box upside view sectional view of the utility model;

[0017] Figure 3 It is the gear box side view of the utility model;

[0018] Figure 4 It is the idler structure schematic diagram of the utility model;

[0019] Figure 5 It is the cover plate structure schematic diagram of the utility model.

[0020] In the drawing: 1, bottom plate;2, fixed frame;3, input gear shaft;4, swing shaft;5, input gear;6, swing lever;7, shift fork;8, guide shaft;9, guide rod;10, positioning block;11, idler;12, sliding block;13, bolt;14, cover plate;15, positioning handle;16, mounting hole;17, cover;18, first bearing;19, second bearing;20, first lifting ring screw;21, fixed chain;22, second lifting ring screw;23, sign. DETAILED DESCRIPTION

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0022] As described in the background art, the gears (idlers) used for meshing transmission inside the gearbox have flat surfaces on their sides, which makes it easy for the gears to experience tooth clipping during sliding meshing. This causes the gears to fail to mesh properly or become damaged, affecting subsequent chain tightening operations. Therefore, this embodiment provides a gearbox for a hydraulic chain tightening device for scraper conveyors and transfer machines.

[0023] See Figures 1 to 5 This embodiment proposes a hydraulic chain tensioning device gearbox for scraper conveyors and transfer machines, including a base plate 1. The upper surface of the base plate 1 is provided with a plurality of mounting holes 16 for fixing the position of the hydraulic chain tensioning device gearbox. Fixing bolts are passed through the mounting holes 16 and screwed into the reserved holes opened at the installation position of the hydraulic chain tensioning device gearbox for scraper conveyors and transfer machines, so as to install and fix it.

[0024] A fixed frame 2 is fixedly connected to the upper surface of the base plate 1. An input gear shaft 3 and a swing shaft 4 are rotatably connected to the inner wall of the fixed frame 2. Two first bearings 18 are embedded in the inner wall of the fixed frame 2, and the inner ring of the first bearing 18 is fixed to the outer surface of the input gear shaft 3. By setting the first bearings 18, the input gear 5 can be made more stable when rotating and the resistance of the input gear 5 when rotating can be reduced, thereby avoiding the input gear 5 from jamming and swinging during use.

[0025] One side of the fixed frame 2 is fixedly connected to an indicator plate 23 for indicating the working status of the gearbox of the hydraulic chain tensioning device. By setting the indicator plate 23, the user can quickly identify the working status of the gearbox of the hydraulic chain tensioning device.

[0026] An input gear 5 is fixedly connected to the outer surface of the input gear shaft 3. A rocker arm 6 and a shift fork 7 are fixedly connected to the outer surface of the input gear 5. A guide shaft 8 and a guide rod 9 are slidably connected to the inner wall of the fixed frame 2. A positioning block 10 and a cover 17 are fixedly connected to the front of the fixed frame 2, and the guide shaft 8 and the guide rod 9 abut against the positioning block 10.

[0027] The input gear shaft 3 can be connected to the output shaft of an externally installed drive motor, so that the drive motor can drive the input gear shaft 3 to rotate, thereby driving the input gear 5 to rotate. The outer surface of the swing shaft 4 is fixedly connected with a sealing sleeve that is rotatably connected to the fixed frame 2. After the swing arm 6 rotates, it can drive the shift fork 7 to swing through the swing shaft 4.

[0028] The guide shaft 8 and guide rod 9 can slide along the inner wall of the fixed frame 2, and the position of the guide shaft 8 and guide rod 9 can be locked by the positioning block 10 fixed on the front of the fixed frame 2, thereby preventing the guide shaft 8 and guide rod 9 from moving on their own.

[0029] A positioning handle 15 for driving the swing arm 6 to swing is fixedly connected to one side of the swing arm 6. By setting the positioning handle 15, it is convenient for the user to drive the swing arm 6 to swing, thereby improving the convenience and practicality of use.

[0030] The outer surface of the guide shaft 8 is slidably connected to the idler wheel 11 that meshes with the input gear 5 through the guide sleeve, and the sides of both the input gear 5 and the idler wheel 11 are rounded. The outer surface of the guide rod 9 is slidably connected to the slider 12 that is hinged to the shift fork 7, and the inner wall of the rocker arm 6 is slidably connected to the pin 13 for position limitation.

[0031] The right side of the fixed frame 2 has a pin hole that matches the pin 13. After the pin 13 is inserted into the corresponding pin hole, the position of the swing arm 6 can be locked. After the fork 7 swings, it can drive the slider 12 to slide along the outer surface of the guide rod 9, which can then drive the idler wheel 11 to mesh with the input gear 5 and complete the separation. When the idler wheel 11 and the input gear 5 are meshed, the input gear 5 rotates and drives the idler wheel 11 to rotate.

[0032] Furthermore, rounding the upper surface of the input gear 5 and idler gear 11 can change the surface contact to point contact, thereby effectively solving the problem of tooth tipping during gear meshing inside the gearbox of the hydraulic chain fastening device for scraper conveyors and transfer machines.

[0033] The inner wall of the idler wheel 11 is inlaid with a second bearing 19, and the inner ring of the second bearing 19 meshes with the outer surface of the sliding sleeve. By setting the second bearing 19, the idler wheel 11 can be made more stable when rotating and the resistance of the idler wheel 11 when rotating can be reduced, thereby avoiding the idler wheel 11 from jamming and wobbling during use.

[0034] The inner walls of the swing shaft 4 and the pin 13 are both threaded with first eye screws 20. The base plate 1 is provided with a fixing chain 21 at both ends connected to the first eye screws 20. By setting the first eye screws 20 and the fixing chain 21, the pin 13 can be limited and supported, thereby preventing the pin 13 from being lost.

[0035] A cover plate 14 is fixedly connected to the upper surface of the fixed frame 2. The cover plate 14 can close and protect the top of the fixed frame 2. The upper surface of the cover plate 14 is threaded with two symmetrically arranged second eye bolts 22 for hoisting the gearbox of the hydraulic chain tightening device. By setting the second eye bolts 22, the gearbox of the hydraulic chain tightening device can be easily hoisted and moved, thereby improving the convenience of use.

[0036] The components in the accompanying drawings of this utility model are for styling reference only and are not specific dimensional standards. The specific dimensions are determined according to the actual production requirements, and the materials of each component can be replaced accordingly based on actual needs.

[0037] Working principle: When using the hydraulic chain tensioning device gearbox for scraper conveyors and transfer machines, the positioning handle 15 can drive the swing arm 6 to swing. After the swing arm 6 swings, it will drive the shift fork 7 to swing through the swing shaft 4, thereby driving the slider 12 to slide along the outer surface of the guide rod 9. This will drive the idler wheel 11 to mesh with the input gear 5 and complete the separation. The pin 13 passing through the swing arm 6 can be inserted into the pin hole opened on the right side of the fixed frame 2 to lock the position of the swing arm 6 after swinging, thus keeping it in the adjusted working state. When the idler wheel 11... After the input gear 5 is engaged, the input gear shaft 3 can be rotated by an externally installed drive motor, which in turn drives the input gear 5 to rotate. The meshing action between the input gear 5 and the idler wheel 11 enables the idler wheel 11 to rotate synchronously. At the same time, the rounding treatment of the upper surface of the input gear 5 and the idler wheel 11 can effectively solve the problem of tooth backing during gear meshing in the gearbox of the hydraulic chain tightening device for scraper conveyors and transfer machines. This makes the chain tightening operation of scraper conveyors and transfer machines more convenient, time-saving, and labor-saving, and reduces the probability of equipment damage.

Claims

1. A gearbox for a hydraulic chain tensioning device for scraper conveyors and transfer machines, comprising a base plate (1), characterized in that: A fixed frame (2) is fixedly connected to the upper surface of the base plate (1). An input gear shaft (3) and a swing shaft (4) are rotatably connected to the inner wall of the fixed frame (2). An input gear (5) is fixedly connected to the outer surface of the input gear shaft (3). A swing rod (6) and a shift fork (7) are fixedly connected to the outer surface of the input gear (5). A guide shaft (8) and a guide rod (9) are slidably connected to the inner wall of the fixed frame (2). A positioning block (10) and a cover (17) are fixedly connected to the front of the fixed frame (2). The guide shaft (8) and the guide rod (9) abut against the positioning block (10). The outer surface of the guide shaft (8) is slidably connected to the idler wheel (11) that meshes with the input gear (5) through the guide sleeve, and the sides of the input gear (5) and the idler wheel (11) are rounded. The outer surface of the guide rod (9) is slidably connected to the slider (12) that is hinged to the shift fork (7). The inner wall of the rocker arm (6) is slidably connected to the pin (13) for position limitation. The upper surface of the fixed frame (2) is fixedly connected to the cover plate (14).

2. The gearbox of the hydraulic chain tensioning device for scraper conveyors and transfer machines according to claim 1, characterized in that: A positioning handle (15) for driving the swing arm (6) to swing is fixedly connected to one side of the swing arm (6), and a number of mounting holes (16) for fixing the position of the gearbox of the hydraulic chain tensioning device are opened on the upper surface of the base plate (1).

3. The gearbox of the hydraulic chain tensioning device for scraper conveyors and transfer machines according to claim 1, characterized in that: The inner wall of the fixed frame (2) is inlaid with two first bearings (18), and the inner ring of the first bearing (18) is fixed to the outer surface of the input gear shaft (3).

4. The gearbox of the hydraulic chain tensioning device for scraper conveyors and transfer machines according to claim 1, characterized in that: The inner wall of the idler wheel (11) is inlaid with a second bearing (19), and the inner ring of the second bearing (19) meshes with the outer surface of the sliding sleeve.

5. The gearbox of the hydraulic chain tensioning device for scraper conveyors and transfer machines according to claim 1, characterized in that: The inner walls of the swing shaft (4) and the pin (13) are threaded with first eye bolts (20), and the base plate (1) is provided with a fixing chain (21) with both ends connected to the first eye bolts (20).

6. The gearbox of the hydraulic chain tensioning device for scraper conveyors and transfer machines according to claim 1, characterized in that: The upper surface of the cover plate (14) is threaded with two symmetrically arranged second eye bolts (22) for lifting the gearbox of the hydraulic chain clamping device.

7. The gearbox of the hydraulic chain tensioning device for scraper conveyors and transfer machines according to claim 1, characterized in that: One side of the fixed frame (2) is fixedly connected to an indicator plate (23) for indicating the working status of the gearbox of the hydraulic chain tensioning device.

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