Machine head chain group for front and rear scraper conveyors

Abstract

The utility model provides a front and rear scraper conveyor head chain group, which relates to the technical field of conveyor heads and comprises an inner shaft, a driver is fixedly arranged outside the inner shaft, and three rows of conveying edges are integrally arranged outside the driver. Two groups of tapered roller bearings are fixedly arranged on shoulders on the two sides of the exterior of the inner shaft, and bearing sleeves are fixedly arranged on the exteriors of every two adjacent groups of tapered roller bearings; the top of the bearing sleeve is provided with an inner hexagonal sealing screw in a threaded connection mode. The sealing screw is arranged, the oil injection sealing function is provided, the sealing screw is detached, glycerin is injected into the position between the two sets of tapered roller bearings through the screw holes, the two sets of tapered roller bearings can be lubricated at the same time, sealing can be achieved by installing the sealing screw again, and a large amount of manpower and material resources consumed when a chain set is replaced are saved; and the cost of newly purchasing the chain group and maintaining the chain group can be saved, and the problem that an existing machine head needs to be frequently maintained is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveyor heads, and more specifically relates to a front and rear scraper conveyor head chain assembly. Background Art

[0002] The conveyor is a mechanical device that uses double chains for transportation. The motor drives the head structure to drive the chain rotation to realize chain transmission. The steel bars used for transportation are fixed at equal intervals between the two chains to promote the movement of minerals.

[0003] At present, the front and rear conveyors used in Xiaokang Coal Mine are SGZ1000 / 2*1000, with a design standard length of 300 meters. The front and rear conveyors are overloaded. The above two reasons cause the front and rear head chain group bearings to be under excessive pressure, and the seals are deformed under stress, resulting in the sealing gap being too large and failing, thereby causing the lubricating oil with a lower viscosity coefficient to leak, resulting in the chain group bearings being damaged due to lack of lubricating oil.

[0004] Based on the above, the front and rear transport head chain assemblies currently in use have a short service life, are frequently replaced and maintained, are inconvenient to lubricate, and lack a protective structure. If the chain detaches or breaks, it is easy for the chain to fly away and cause damage, making it inconvenient to monitor and prompt it. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides front and rear scraper conveyor head chain groups to solve the problems raised in the above background technology that the existing front and rear conveyor head chain groups have a short service life, are frequently replaced, are inconvenient to lubricate, and lack a protective structure. If the chain detaches or breaks, it is easy for the chain to be thrown away and cause damage, making it inconvenient to monitor and prompt it.

[0006] The purpose and effect of the front and rear scraper conveyor head chain assembly of the utility model are achieved by the following specific technical means:

[0007] The front and rear scraper conveyor head chain groups include an inner shaft, a transmission device is fixedly provided on the outside of the inner shaft, and three rows of conveying edges are integrally provided on the outside of the transmission device; two groups of tapered roller bearings are fixedly provided on the shoulders on both sides of the outside of the inner shaft, and bearing sleeves are fixedly provided on the outside of the two adjacent groups of tapered roller bearings; a hexagonal sealing screw is provided on the top of the bearing sleeve through a threaded connection; external frames are fixedly provided on the adjacent edges of the front sides of the two groups of bearing sleeves, and a T-shaped guide rod is fixedly provided on the outside of the external frame; a protective cover, a protrusion structure is integrally provided on the lower side of both sides of the protective cover, and the protrusion structure slides outside the T-shaped guide rod.

[0008] Furthermore, the opening position of the sealing screw is aligned with the middle of two adjacent groups of tapered roller bearings, and the threaded hole of the sealing screw is a through hole.

[0009] Furthermore, a supporting bar is integrally provided on the lower portion of the exterior of the external rack, and a rotating buckle is rotatably provided on the front side of the supporting bar.

[0010] Furthermore, a spring is sleeved on the front exterior of the T-shaped guide rod, and the spring is locked by a rotary buckle. A ring groove structure that matches the spring is opened on the rear side of the rotary buckle.

[0011] Furthermore, the protective cover is a 90-degree arc-shaped structure, and the conveying edge does not contact the protective cover.

[0012] Furthermore, two groups of resistor bars are fixedly provided on the top of the supporting bar; copper slides are fixedly provided on the bottom of the bump structures on both sides of the protective cover, and the copper slides are fitted with the two groups of resistor bars.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] A sealing screw is set to provide an oil injection sealing function. After removing the sealing screw, glycerin can be injected into the position between the two sets of tapered roller bearings through the screw hole to lubricate the two sets of tapered roller bearings at the same time. The sealing screw can be installed again to seal it, which saves a lot of manpower and material resources when replacing the chain set, and also saves the cost of purchasing new chain sets and repairing chain sets.

[0015] A protective cover is set to provide a protection function. If the chain falls off or breaks during operation, the chain will jump forward due to inertia and hit the protective cover. The protective cover can intercept the chain to prevent it from flying off. When the protective cover moves, the spring outside the T-shaped guide rod provides a force to cushion the protective cover and prevent it from being damaged. When the protective cover needs to be replaced, the protective cover can be removed by turning the rotary buckle, which is easy to operate.

[0016] A resistance bar is set up to provide a monitoring function. The resistance bar is connected to electricity and monitored by an electronic resistance meter. During the movement of the protective cover, the copper slider is also driven to move. The copper slider slides outside the resistance bar, causing the resistance of the resistance bar to change, which is fed back to the resistance meter, triggering the reminder program to issue an alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the side tilt structure of the utility model.

[0019] Figure 3 It is a three-dimensional disassembly structural schematic diagram of the utility model.

[0020] Figure 4 It is a schematic diagram of the side tilt disassembly structure of the utility model.

[0021] Figure 5It is a partial cross-sectional structural schematic diagram of the utility model.

[0022] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0023] 1. Inner shaft; 2. Transmission; 201. Conveying edge; 3. Tapered roller bearing; 4. Bearing sleeve; 401. Sealing screw; 5. External frame; 501. Load bar; 6. T-shaped guide rod; 7. Protective cover; 8. Rotating buckle; 9. Resistor bar; 10. Copper slide. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.

[0025] Example 1: As shown in the attached Figure 1 To the attached Figure 5 As shown:

[0026] The utility model provides a front and rear scraper conveyor head chain group, including an inner shaft 1, a transmission device 2 is fixedly provided on the outside of the inner shaft 1, and three rows of conveying edges 201 are integrally provided on the outside of the transmission device 2; two groups of tapered roller bearings 3 are fixedly provided at the shoulders on both sides of the outside of the inner shaft 1, and bearing sleeves 4 are fixedly provided on the outsides of two adjacent groups of tapered roller bearings 3; the tops of the bearing sleeves 4 are provided with hexagonal sealing screws 401 through threaded connections; external frames 5 are fixedly provided on the adjacent edges of the front sides of the two groups of bearing sleeves 4, and T-shaped guide rods 6 are fixedly provided on the outside of the external frames 5; a protective cover 7, and a protrusion structure is integrally provided on the lower sides of both sides of the protective cover 7, and the protrusion structure slides outside the T-shaped guide rod 6.

[0027] The opening position of the sealing screw 401 is aligned with the middle of two adjacent groups of tapered roller bearings 3, and the threaded hole of the sealing screw 401 is a through hole.

[0028] Among them, a supporting bar 501 is integrally provided on the outer lower part of the external frame 5, and a rotating buckle 8 is rotatably provided on the front side of the supporting bar 501.

[0029] Among them, the front side of the T-shaped guide rod 6 is covered with a spring, and the spring is locked by a rotating buckle 8. The rear side of the rotating buckle 8 is provided with a ring groove structure that matches the spring.

[0030] The protective cover 7 is a 90-degree arc-shaped structure, and the conveying edge 201 does not contact the protective cover 7 .

[0031] Two groups of resistor bars 9 are fixedly installed on the top of the supporting bar 501 ; copper sliders 10 are fixedly installed on the bottom of the bump structures on both sides of the protective cover 7 , and the copper sliders 10 are attached to the two groups of resistor bars 9 .

[0032] like Figure 1-5As shown, the bearing sleeve 4 is fixed to the end of the conveyor, and then the chain is clamped in the conveying edge 201, and the chain and the associated conveying steel bar pass through the interior of the protective cover 7;

[0033] The motor drives the inner shaft 1 to rotate, and the inner shaft 1 drives the transmission 2 to rotate, so that the chain can be driven, thereby achieving continuous transmission;

[0034] After a certain period of operation, stop the equipment, remove the sealing screw 401, inject glycerin into the position between the two sets of tapered roller bearings 3 through the screw hole, lubricate the two sets of tapered roller bearings 3 at the same time, and install the sealing screw 401 to seal;

[0035] In the six months since the improvement, the newly modified rear transport aircraft nose chain group has no other maintenance measures except for adding 100g of glycerin during the day shift maintenance time. So far, the chain group has been operating normally, without abnormal noise, high temperature and other abnormalities. The chain group modification effect is obvious, saving a lot of manpower and material resources consumed in replacing the chain group, and also saving the cost of purchasing new chain groups and repairing chain groups.

[0036] Example 2: Based on Example 1, there are some models of steel bars outside the chain that are wider than the chain. If this type of transmission structure is used, the protective cover 7 and the related components on both sides need to be widened accordingly to ensure that the steel bars can pass smoothly.

[0037] Example 3: Based on Example 1, if the chain falls off or breaks during operation, the chain will jump forward due to inertia and hit the protective cover 7. The protective cover 7 can intercept the chain to prevent it from flying off, and when the protective cover 7 moves, the spring outside the T-shaped guide rod 6 provides a force to cushion the protective cover 7 and prevent the protective cover 7 from being damaged.

[0038] When the protective cover 7 fails, manually retract the spring on the rear side of the rotating buckle 8, directly rotate the rotating buckle 8, and then remove the spring, and the protective cover 7 can be removed for replacement;

[0039] Connect the resistor bar 9 to electricity, use an electronic resistance meter to monitor it, and connect it to a small program or control room. During the movement of the protective cover 7, the copper slider 10 will also be driven to move. The copper slider 10 slides outside the resistor bar 9, causing the resistance of the resistor bar 9 to change, which is fed back to the resistance meter, triggering the reminder program to issue an alarm. After receiving the alarm, personnel can be sent for maintenance.

[0040] The specific usage and function of this embodiment are as follows:

[0041] In the present invention, when in use, the bearing sleeve 4 is fixed to the end of the conveyor, and then the chain is clamped in the conveying edge 201, and the chain and the associated conveying steel bar pass through the interior of the protective cover 7;

[0042] The motor drives the inner shaft 1 to rotate, and the inner shaft 1 drives the transmission 2 to rotate, so that the chain can be driven, thereby achieving continuous transmission;

[0043] After a certain period of operation, stop the equipment, remove the sealing screw 401, inject glycerin into the position between the two sets of tapered roller bearings 3 through the screw hole, lubricate the two sets of tapered roller bearings 3 at the same time, and install the sealing screw 401 to seal;

[0044] If the chain falls off or breaks during operation, the chain will jump forward due to inertia and hit the protective cover 7. The protective cover 7 can intercept the chain to prevent it from flying off, and the spring outside the T-shaped guide rod 6 provides a force to cushion the protective cover 7 when the protective cover 7 moves, preventing the protective cover 7 from being damaged.

[0045] Connect the resistor bar 9 to electricity and use an electronic resistance meter to monitor it. During the movement of the protective cover 7, the copper slider 10 will also be driven to move. The copper slider 10 slides outside the resistor bar 9, causing the resistance of the resistor bar 9 to change, which is fed back to the resistance meter, triggering the reminder program to issue an alarm.

Claims

1. Front and rear scraper conveyor head chain assembly, including: An inner shaft (1), wherein a transmission device (2) is fixedly provided on the outside of the inner shaft (1), and three rows of conveying edges (201) are integrally provided on the outside of the transmission device (2); the inner shaft (1) is characterized in that two sets of tapered roller bearings (3) are fixedly provided on the shoulders on both sides of the outside of the inner shaft (1), and bearing sleeves (4) are fixedly provided on the outside of two adjacent sets of tapered roller bearings (3); the top of the bearing sleeve (4) is provided with a hexagonal sealing screw (401) through a threaded connection; the front adjacent edges of the two sets of bearing sleeves (4) are fixedly provided with an external frame (5), and the outside of the external frame (5) is fixedly provided with a T-shaped guide rod (6); A protective cover (7) is provided with a convex structure integrally provided below both sides of the protective cover (7), and the convex structure slides outside the T-shaped guide rod (6).

2. The front and rear scraper conveyor nose chain assembly according to claim 1, characterized in that: The opening position of the sealing screw (401) is aligned with the middle of two adjacent sets of tapered roller bearings (3), and the threaded hole of the sealing screw (401) is a through hole.

3. The front and rear scraper conveyor nose chain assembly according to claim 1, characterized in that: A supporting bar (501) is integrally provided on the lower portion of the exterior of the external frame (5), and a rotating buckle (8) is rotatably provided on the front side of the supporting bar (501).

4. The front and rear scraper conveyor nose chain assembly according to claim 3, characterized in that: The front outer portion of the T-shaped guide rod (6) is sleeved with a spring, which is locked by a rotating buckle (8), and the rear side of the rotating buckle (8) is provided with a ring groove structure that matches the spring.

5. The front and rear scraper conveyor nose chain assembly according to claim 1, characterized in that: The protective cover (7) is a 90-degree arc-shaped structure, and the conveying edge (201) does not contact the protective cover (7).

6. The front and rear scraper conveyor nose chain assembly according to claim 3, characterized in that: Two groups of resistor bars (9) are fixedly arranged on the top of the supporting bar (501); copper slides (10) are fixedly arranged on the bottom of the convex block structures on both sides of the protective cover (7), and the copper slides (10) are fitted with the two groups of resistor bars (9).

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