Scraper chain falling fault handling device

Abstract

The utility model belongs to the technical field of transportation machinery maintenance, and particularly relates to a scraper chain falling fault handling device. The technical problem that at present, a tool special for treating chain breakage and chain falling of the scraper conveyor is lacked, and consequently time and labor are wasted in the treatment process is solved. The utility model discloses a scraper chain falling fault handling device which comprises a T-shaped support and a pair of pull-back hook chain sets. A plurality of connecting ring hanging rod clamping crotches used for hanging pull-back hook chain sets are symmetrically arranged at the two ends of a crosspiece of the T-shaped support, a circular-arc-shaped shaft clamp is arranged at the bottom of a stand column of the T-shaped support, the axial direction of the circular-arc-shaped shaft clamp is perpendicular to a plane formed by the T-shaped support, and the circular-arc-shaped shaft clamp is connected with the stand column of the T-shaped support through an outer side arc face. Each pull-back hook chain set comprises a cylinder-like right-hand and left-hand thread lead screw opposite-pull component, an adjusting chain and a chain hook, a right-hand thread inner threaded hole and a left-hand thread inner threaded hole are formed in the front end and the rear end of each right-hand and left-hand thread lead screw opposite-pull component respectively, each right-hand thread inner threaded hole is matched with a right-hand thread lead screw, and each left-hand thread inner threaded hole is matched with a left-hand thread lead screw.

Description

Technical Field

[0001] The utility model belongs to the technical field of transport machinery maintenance, in particular to a device for handling chain-drop faults of a scraper conveyor. Background Art

[0002] The scraper conveyor has a poor working environment. Gas-liquid corrosion, particle medium wear and large foreign objects often cause equipment failure and breakdown, especially broken and dropped chains, which will directly lead to production interruption. To deal with the problem of scraper chain drop, the scraper chain is usually pried up with a crowbar, or a hardwood support is placed between the two symmetrical inner rings of the two scraper chains, or a wooden block is placed between the head trough and the side scraper chain, and then the scraper conveyor is operated in a jog mode to force the dropped chain to the upper wheel. However, during the start-up of the scraper conveyor, the crowbar, wooden stick or wooden block may be ejected by the reaction force and cause harm to the operator. Therefore, the maintenance regulations require that the equipment must be shut down, powered off, marked and locked before maintenance. In this way, the bracket must be welded, and the chain must be dragged with a fall chain. After the treatment, the bracket must be cut and removed, which is troublesome and time-consuming. Utility Model Content

[0003] The utility model provides a scraper chain drop fault treatment device to solve the technical problem that there is currently a lack of a tool specifically for treating scraper chain breakage and chain drop, which results in a time-consuming and labor-intensive treatment process.

[0004] The utility model discloses a scraper chain-drop fault handling device, which is realized by adopting the following technical scheme: a scraper chain-drop fault handling device, comprising a T-shaped bracket and a pair of pull-back hook chain groups; a plurality of connecting rings and hanging rods for hanging the pull-back hook chain groups are symmetrically arranged at both ends of the crossbar of the T-shaped bracket 1, and an arc-shaped shaft clamp is arranged at the bottom of the T-shaped bracket column, the axial direction of the arc-shaped shaft clamp is perpendicular to the plane formed by the T-shaped bracket, and the arc-shaped shaft clamp is connected to the T-shaped bracket column through the outer arc surface;

[0005] Each retraction hook chain group includes a long cylindrical forward and reverse thread screw pulling component, an adjusting chain and a chain hook. The forward and reverse thread screw pulling component has a forward internal thread hole and a reverse internal thread hole at the front and rear ends respectively. The forward internal thread hole is equipped with a forward screw, and the reverse internal thread hole is equipped with a reverse screw. One end of the forward screw and the reverse screw is screwed into the corresponding internal thread hole, and a connecting ring is installed at the other end.

[0006] Furthermore, a power assist rod is installed on the circumference of the positive and negative threaded screw tensioning member.

[0007] Furthermore, the power-assisting rod is also equipped with an extended power-assisting sleeve rod.

[0008] Furthermore, the positive and negative threaded screw tensioning component includes a positive threaded hexagonal nut and a negative threaded hexagonal nut respectively located at the front and rear ends, and a plurality of wing plates connecting the two hexagonal nuts; there are multiple power assist rods which are vertically installed in the middle of the wing plates.

[0009] Furthermore, it also includes a connecting buckle, which includes an annular part with a notch, both ends of the notch are provided with external threads, and the notch is equipped with a locking part with internal threads, the locking part is screwed on the external threads at the notch and can realize the connection and disconnection of the notch.

[0010] Furthermore, the connection between the crosspiece of the T-shaped bracket and the column is symmetrically connected with rib plates.

[0011] Beneficial effects of the utility model:

[0012] 1. The device described in the utility model is used to deal with the chain drop fault, avoiding the traditional treatment method of jogging the scraper conveyor and forcing the chain drop to go on the wheel, eliminating the illegal start of the scraper during maintenance, and eliminating the risk of mechanical injury during maintenance operations.

[0013] 2. If there is no 'T-shaped bracket', a bracket must be welded and then pulled back by a fall chain. After the inspection, the bracket must be cut and removed, which is time-consuming and laborious. The utility model effectively overcomes the above problems by providing a special device.

[0014] 3. The combination of movable connecting buckle and adjustable chain can quickly adjust the length of the chain, which is more convenient and faster than the reverse chain.

[0015] 4. For the broken chain failure of the scraper conveyor, if the broken chain is in the middle of the machine body, hook the two sets of hook chains on the crotch on one side of the bracket, which is equivalent to connecting them together, and hook them on the scrapers on both sides of the broken chain respectively. The scraper can be quickly pulled back to deal with the broken chain failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the main structure of a scraper chain-drop fault handling device described in the utility model.

[0017] Figure 2 Schematic diagram of the side view of the T-type bracket structure (including the scraper sprocket and shaft).

[0018] Figure 3 Schematic diagram of the pull-back hook chain group structure.

[0019] Figure 4 Schematic diagram of the connecting buckle structure.

[0020] Figure 5 Schematic diagram of the main structure of the positive and negative threaded screw tension member.

[0021] Figure 6Schematic diagram of the side view of the structure of the positive and negative threaded screw tension member.

[0022] Figure 7 Schematic diagram of horizontal scraper maintenance.

[0023] Figure 8 Schematic diagram of head climbing scraper maintenance.

[0024] Fig. 9 Schematic diagram of maintenance when the broken chain is located in the middle of the scraper.

[0025] 1-T-type bracket, 2-connecting ring hanging rod clip, 3-rib plate, 4-arc-shaped shaft clip, 5-retracting hook chain set, 6-scraper sprocket shaft, 7-positive and negative thread screw tension component, 8-adjusting chain and chain hook, 9-connecting sling, 10-boost rod, 11-wing plate, 12-connecting ring, 13-positive thread screw, 14-positive hexagonal nut, 15-negative thread screw, 16-negative hexagonal nut, 17-extended power-assisting sleeve rod, 18-chain drop, 19-chain break. DETAILED DESCRIPTION

[0026] Example 1 Figure 1-3 As shown, a scraper chain failure handling device comprises a T-shaped bracket 1 and a pair of pull-back hook chain groups 5; a plurality of connecting ring hanging rod clamps 2 for hanging the pull-back hook chain groups 5 are symmetrically arranged at both ends of the crossbar of the T-shaped bracket 1, and a circular arc shaft clamp 4 is arranged at the bottom of the column of the T-shaped bracket 1, the axial direction of the circular arc shaft clamp 4 is perpendicular to the plane formed by the T-shaped bracket 1, and the circular arc shaft clamp 4 is connected to the column of the T-shaped bracket 1 through the outer arc surface;

[0027] Each pull-back hook chain set 5 includes a long cylindrical positive and negative threaded screw tensioning member 7, an adjusting chain and a chain hook 8. The positive and negative threaded screw tensioning member 7 has a positive internal threaded hole and a negative internal threaded hole at both ends. The positive internal threaded hole is equipped with a positive screw 13, and the negative internal threaded hole is equipped with a negative screw 15. One end of the positive screw 13 and the negative screw 15 is screwed into the corresponding internal threaded hole, and the other end is equipped with a connecting ring 12. The connection between the crosspiece of the T-shaped bracket 1 and the column is also symmetrically connected with a rib plate 3. One of the two connecting rings is used to hang on the connecting ring hanging rod clip 2, and the other is used to connect the adjusting chain and the chain hook 8.

[0028] Example 2 Figure 5 , 6 As shown, the positive and negative threaded screw tensioning member 7 is provided with a booster rod 10 on its circumference; the booster rod 10 is also provided with an extended booster sleeve rod 17. The booster rod and the extended booster sleeve rod 17 are helpful to screw the positive and negative threaded screw tensioning member 7.

[0029] Example 3 Figure 5 , 6As shown, the positive and negative threaded screw tensioning member 7 includes a positive threaded hexagonal nut 14, a negative threaded hexagonal nut 16, and a plurality of wing plates 11 connecting the two hexagonal nuts, respectively located at the front and rear ends; there are a plurality of booster rods 10, which are vertically installed in the middle of the wing plates 11. Preferably, there are three wing plates, which are connected to the hexagonal nuts at intervals of 120 degrees. The structure is simple, practical, and easy to assemble. Each wing plate 11 is connected to a booster rod 10.

[0030] Example 4 Figure 4 As shown, the connecting buckle 9 includes a ring-shaped part with a notch, both ends of the notch are provided with external threads, and the notch is provided with a locking part with internal threads, which is screwed on the external threads at the notch and can achieve the connection and disconnection of the notch. The connecting buckle is used to connect the connecting ring and the adjusting chain and the chain hook 8 together, and the length of the adjusting chain and the chain hook 8 can be adjusted by selecting different chains on the adjusting chain and the chain hook 8.

[0031] The following are implementation methods of the present invention when it is specifically applied.

[0032] A maintenance tool is made in advance, that is, a T-shaped bracket 1 is made of seamless steel pipe; multiple groups of connecting rings and hanging rod clips 2 are symmetrically arranged at both ends of the head of the T-shaped bracket 1. During maintenance, the connecting rings and hanging rod clips 2 at both ends of the T-shaped bracket selected by the two groups of hook chains should be symmetrical, and the spacing between them should be larger than the diameter of the scraper head sprocket to ensure that the scraper chain will not be clamped on the sprocket when the scraper is pulled back; rib plates 3 are arranged on both sides of the intersection of the T-shaped bracket; an arc-shaped shaft clip 4 is arranged at the bottom of the T-shaped bracket, and its direction is consistent with the T-shaped bracket column and crossbar. Vertically, the arc diameter of the arc-shaped shaft clamp is slightly larger than the diameter of the scraper sprocket shaft 6; two sets of retraction hook chain groups 5 are made for backup, and the retraction hook chain group 5 includes the following components: positive and negative thread screw pulling components 7, adjusting chains and chain hooks 8, and connecting live buckles 9; the positive and negative thread screw pulling components 7 include: power rod 10, wing plate 11 of connecting nut, connecting ring 12, positive thread screw 13, positive thread hexagonal nut 14, negative thread screw 15, negative thread hexagonal nut 16 and extended power sleeve rod 17.

[0033] like Figure 7 , 8As shown, when the scraper chain links deviate from the sprocket during operation, that is, the scraper chain fails, the machine is shut down, the power is cut off, the sign is hung, and the machine is locked. Loosen the scraper sprocket tensioning screw (some scraper sprocket tensioning screws are set at the machine head), support the arc-shaped shaft clamp 4 at the bottom of the T-shaped bracket 1 on the scraper sprocket shaft (one person is required to temporarily hold the T-shaped bracket to stabilize it), adjust the screws of the two sets of positive and negative threaded screw pulling screw components 7 to the farthest position, and then symmetrically hang the connecting rings on one side of the two sets of positive and negative threaded screw pulling components 7 on the connecting ring hanging rod clamps 2 on both sides of the T-shaped bracket. The spacing between the connecting rings should be larger than the diameter of the scraper sprocket. Hook an adjusting chain and chain hook 8 on the scraper crossbar on the upper part of the scraper sprocket, and hook the other adjusting chain and chain hook 8 on the scraper crossbar on the lower part of the scraper sprocket. Adjust the length of the two sets of retraction hook chain groups 5 respectively and connect them securely with the connecting buckle 9. At this time, the crossbar of the T-shaped bracket 1 should be kept as perpendicular to the running direction of the scraper as possible, and synchronously screw the positive and negative threads of the upper and lower sets of retraction hook chain groups 5. When the two sets of back-pulling chain hook groups 5 are synchronously tightened, if it is laborious to screw the booster rod 10 of the forward and reverse threaded screw pulling member 7, the extended booster sleeve 17 can be used to increase the force. When using the extended booster sleeve 17 to increase the force and tighten, pay attention to the chain hook of the scraper crossbar when twisting. It should be prevented from being unhooked. After the scraper chain link is arched, use a crowbar to pry the chain link at the scraper sprocket to put it into the groove and return it to its position. After the scraper chain link is returned to its position, the upper and lower hook chains, the forward and reverse threaded screw pulling members 7, are synchronously loosened until the hook chain of the scraper can be completely released. All maintenance tools are removed and stored for standby. Finally, adjust the scraper conveyor sprocket tensioning screw to make the sprocket shaft perpendicular to the running direction of the chain plate and the chain is moderately tight. Finally, test run the machine according to the startup procedure. Figure 7 , Figure 8 The chain drop treatment methods for medium-level scrapers and head-climbing scrapers are basically the same.

[0034] For chain breakage failure, if the chain breakage occurs at the front and rear of the machine, the handling method is basically the same as the chain drop method. Pull back the upper and lower scrapers to make the chain links of the broken chain arch up and then handle it.

[0035] If the broken chain is in the middle of the scraper body, Fig. 9 As shown, one end of the two sets of pull-back hook chain groups 5 are hooked on the connecting ring hanging rod crotch 2 on the same side of the T-shaped bracket 1, which is equivalent to connecting them together, and then the other ends of the two sets of pull-back hook chain groups 5 are respectively hooked on the scrapers on both sides of the broken chain. The scraper can be quickly pulled back to make the broken chain part arch up, replace the broken chain parts, and reconnect them to complete the rapid disposal of the broken chain failure.

[0036] The main innovations of this utility model are:

[0037] 1. An arc-shaped shaft clamp is set at the bottom of the T-shaped bracket, which can be easily supported and clamped on the sprocket shaft of the scraper. The layout direction is perpendicular to the T-shaped bracket column and crossbar, which can keep the bracket stable and prevent axial skew;

[0038] 2. Two sets of pull-back hook chains are symmetrically hung on the crossbar of the T-shaped bracket, which can keep the bracket balanced and stable when pulled back symmetrically;

[0039] 3. Two sets of pull-back hook chains are symmetrically hung on the crossbar of the T-shaped bracket, and the distance between them is larger than the diameter of the sprocket to ensure that the scraper sprocket will not be clamped when the chain is pulled back;

[0040] 4. A screw-on booster rod and an extended sleeve rod are set on the wing plate of the tension member, so that the pull-back is powerful and effortless;

[0041] 5. Use movable connecting buckle to adjust the length of the pull hook chain group, which is quick and convenient.

Claims

1. A scraper chain failure handling device, characterized in that: It comprises a T-shaped bracket (1) and a pair of retracting hook chain groups (5); a plurality of connecting ring hanging rod clips (2) for hanging the retracting hook chain groups (5) are symmetrically arranged at both ends of the crossbar of the T-shaped bracket (1); a circular arc shaft clip (4) is arranged at the bottom of the column of the T-shaped bracket (1); the axial direction of the circular arc shaft clip (4) is perpendicular to the plane formed by the T-shaped bracket (1), and the circular arc shaft clip (4) is connected to the column of the T-shaped bracket (1) through the outer arc surface; Each retraction hook chain assembly (5) comprises a long cylindrical positive and negative threaded screw tensioning member (7) and an adjusting chain and a chain hook (8). The positive and negative threaded screw tensioning member (7) is provided with a positive internal threaded hole and a negative internal threaded hole at the front and rear ends respectively. The positive internal threaded hole is provided with a positive screw (13), and the negative internal threaded hole is provided with a negative screw (15). One end of the positive screw (13) and the negative screw (15) are screwed into the corresponding internal threaded hole, and the other end is provided with a connecting ring (12).

2. A scraper chain failure handling device as claimed in claim 1, characterized in that: The positive and negative threaded screw tensioning member (7) is provided with a boosting rod (10) in the circumferential direction thereof.

3. A scraper chain failure handling device as claimed in claim 2, characterized in that: The booster rod (10) is also provided with an extended booster sleeve rod (17).

4. A scraper chain failure handling device as claimed in claim 3, characterized in that: The positive and negative threaded lead screw tensioning member (7) comprises a positive threaded hexagonal nut (14), a negative threaded hexagonal nut (16) respectively located at the front and rear ends, and a plurality of wing plates (11) connecting the two hexagonal nuts; a plurality of power assist rods (10) are vertically mounted in the middle of the wing plates (11).

5. A scraper chain failure handling device as claimed in claim 4, characterized in that: It also includes a connecting buckle (9), which includes an annular part with a notch, both ends of the notch are provided with external threads, and the notch is provided with a locking part with internal threads, the locking part is screwed on the external threads at the notch and can realize the connection and disconnection of the notch.

6. A scraper chain failure handling device as described in any one of claims 1 to 4, characterized in that: Rib plates (3) are symmetrically connected to the connection between the crosspiece of the T-shaped bracket (1) and the column.

Images