Gear coupling for scraper conveyor

Abstract

The utility model relates to a gear coupling for a scraper conveyor, and belongs to the technical field of gear couplings. Comprising a first half coupling body connected with a chain wheel shaft and a second half coupling body connected with a speed reducer, the outer sides of the ends, close to each other, of the first half coupling body and the second half coupling body are sleeved with the same inner gear sleeve, and the chain wheel shaft is inserted into the first half coupling body through an inner spline; the outer side of the second half coupling is sleeved with an output shaft of a speed reducer through an outer spline; two positioning bolts are connected to the inner gear sleeve in a threaded mode and make contact with the first half coupler and the second half coupler respectively. The problem that a gear coupling of an existing scraper conveyor is inconvenient to disassemble is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gear coupling technical field, concretely relates to a gear coupling for scraper conveyor. BACKGROUND

[0002] The scraper conveyor is the basic transport equipment of the coal mine underground fully mechanized working face coal, and the working principle is that the coal of the working face is transported to the conveyor belt through the transmission part, and then is transported to the ground. The movement of the coal on the scraper conveyor and the transfer machine is mainly realized by driving the chain wheel shaft group to rotate, and the shaft group drives the scraper to push the coal. The chain wheel shaft group is an important part of the entire scraper conveyor, which contains multiple components such as seals, oil seals and bearings. Once the chain wheel shaft group seal is damaged, the bearing is damaged, or the chain wheel and the chain nest tooth surface are severely worn, it will cause the chain and the chain nest to not be able to mesh normally, and then it may cause the chain to break or jump during operation. The connection between the chain wheel shaft group and the speed reducer is relatively simple, and the replacement is relatively complex. The power part must be removed before replacement, which consumes a lot of manpower and material resources, and the operation space is limited, making replacement difficult. In view of this situation, a coupling is designed, which can replace the chain wheel shaft group without disassembling the power part. SUMMARY

[0003] The utility model overcomes the insufficient prior art, and provides a gear coupling for scraper conveyor; the problem of inconvenient disassembly of the gear coupling of the current scraper conveyor is solved.

[0004] In order to achieve the above purpose, the utility model is realized through the following technical schemes.

[0005] A gear coupling for scraper conveyor, comprising a first half coupling connected with a chain wheel shaft and a second half coupling connected with a speed reducer, an inner tooth sleeve is sleeved on the outer side of the end of the first half coupling and the second half coupling close to each other, a chain wheel shaft is inserted in the first half coupling through an inner spline, and an output shaft of the speed reducer is sleeved on the outer side of the second half coupling through an outer spline; two positioning bolts are screwed on the inner tooth sleeve, and the positioning bolts are in contact with the first half coupling and the second half coupling respectively.

[0006] Further, the first half coupling and the second half coupling are both cylindrical structures with open ends, the first half coupling and the second half coupling are coaxially arranged, and a circle of outer meshing teeth is fixedly arranged on the outer side of the end of the first half coupling and the second half coupling close to each other respectively.

[0007] Further, the inner tooth sleeve is a cylindrical structure with two open ends, a ring of inner meshing teeth is fixedly arranged on the inner side of the inner tooth sleeve, two internally and externally communicating threaded holes are symmetrically arranged in the middle part of the inner tooth sleeve, a coaxial washer groove is arranged at the outer opening of the threaded hole, and a positioning bolt is respectively screwed at each threaded hole, and a washer is sleeved on the outer side of the positioning bolt.

[0008] Further, a ring of outer meshing teeth is arranged at the end of the first half-coupling and the second half-coupling, and the ring of outer meshing teeth is engaged with a ring of inner meshing teeth on the inner side of the two open ends of the inner tooth sleeve.

[0009] Further, an inner spline is arranged on the inner side of the first half-coupling, an outer expansion groove is arranged at the opening of the end of the first half-coupling close to the second half-coupling, the inner diameter of the outer expansion groove is larger than the inner diameter of the first half-coupling, an outer spline is arranged on the outer side of the chain wheel shaft, the end of the chain wheel shaft is inserted from the opening of the first half-coupling away from the second half-coupling, and the outer spline on the chain wheel shaft is matched with the inner spline on the inner side of the first half-coupling.

[0010] Further, a pressing plate is arranged in the outer expansion groove at the opening of the first half-coupling, the pressing plate comprises a large-diameter segment and a small-diameter segment, the large-diameter segment and the small-diameter segment are coaxially arranged, the large-diameter segment is arranged in the outer expansion groove, and the small-diameter segment is arranged in the opening of the first half-coupling close to the second half-coupling.

[0011] Further, a plurality of counterbores are arranged on the side end face of the pressing plate close to the second half-coupling, and the counterbores are in communication with the side end face of the pressing plate away from the second half-coupling.

[0012] Further, a plurality of threaded holes are arranged on the side end face of the chain wheel shaft close to the second half-coupling, a fixing bolt is arranged in each counterbore on the pressing plate, the fixing bolts correspond to the threaded holes on the end face of the chain wheel shaft in a one-to-one manner, the fixing bolts are screwed with the corresponding threaded holes after penetrating through the counterbores, so that the pressing plate and the first half-coupling are fixedly connected with the chain wheel shaft.

[0013] Further, an outer spline is arranged on the outer side of the second half-coupling, an inner spline is arranged on the inner side of the output shaft of the speed reducer, and the outer spline on the outer side of the second half-coupling is matched with the inner spline on the inner side of the output shaft of the speed reducer.

[0014] The present application has the following beneficial effects compared with the prior art:

[0015] The gear coupling for the scraper conveyor is made into a split structure, the contact mode of the chain wheel shaft, the gear coupling and the speed reducer is changed, sufficient conditions are provided for convenient disassembly, the chain wheel shaft can be replaced without disassembling the power part during the replacement process, and the replacement is more convenient and fast. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the first half of the coupling;

[0019] Figure 3 This is a side view of the second half of the coupling;

[0020] Figure 4 This is a front view of the internal gear sleeve;

[0021] Figure 5 This is a side view of the internal gear sleeve;

[0022] Figure 6 This is a side view of the pressure plate;

[0023] Figure 7 This is a front view of the pressure plate;

[0024] Figure 8 This is a schematic diagram showing the connection between this utility model and the sprocket shaft assembly;

[0025] Among them, 1 is the first half coupling, 2 is the second half coupling, 3 is the sprocket shaft, 4 is the inner gear sleeve, 5 is the positioning bolt, 6 is the external meshing tooth, 7 is the washer, 8 is the outer expansion groove, 9 is the pressure plate, and 10 is the fixing bolt. Detailed Implementation

[0026] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0027] like Figure 1 As shown in Figure 8, this utility model provides a gear coupling for a scraper conveyor, including a first half-coupling 1 connected to a sprocket shaft 3 and a second half-coupling 2 connected to a reducer. The same internal gear sleeve 4 is sleeved on the outer side of the first half-coupling 1 and the second half-coupling 2, which are close to each other. The sprocket shaft 3 is inserted into the first half-coupling 1 through an internal spline, and the output shaft of the reducer is sleeved on the outer side of the second half-coupling 2 through an external spline. Two positioning bolts 5 are screwed onto the internal gear sleeve 4, and the positioning bolts 5 are in contact with the first half-coupling 1 and the second half-coupling 2 respectively.

[0028] The first half-coupling 1 and the second half-coupling 2 are both cylindrical structures with two open ends, and the first half-coupling 1 is coaxially arranged with the second half-coupling 2. The outer side of the end of the first half-coupling 1 and the second half-coupling 2 close to each other is fixedly provided with a circle of outer meshing teeth 6.

[0029] The inner tooth sleeve 4 is a cylindrical structure with two open ends, and a circle of inner meshing teeth is fixedly arranged on the inner side of the inner tooth sleeve 4. Two internally and externally communicating threaded holes are symmetrically arranged in the middle of the inner tooth sleeve 4, a coaxial washer groove is arranged at the outer opening of the threaded hole, and a positioning bolt 5 is respectively screwed at each threaded hole. The outer side of the positioning bolt 5 is sleeved with a washer 7, and the washer 7 is located inside the washer groove.

[0030] The end of the first half-coupling 1 and the second half-coupling 2 close to each other is respectively inserted into the two openings of the inner tooth sleeve 4, and the circle of outer meshing teeth 6 at the end of the first half-coupling 1 and the second half-coupling 2 is respectively engaged with the circle of inner meshing teeth on the inner side of the two open ends of the inner tooth sleeve 4. The end of the first half-coupling 1 and the second half-coupling 2 close to each other is respectively in contact with the positioning bolt 5, and the first half-coupling 1 and the second half-coupling 2 are positioned by the two positioning bolts 5.

[0031] The inner side of the first half-coupling 1 is provided with internal splines, and the end of the first half-coupling 1 close to the second half-coupling 2 is provided with an outer expansion groove 8, and the inner diameter of the outer expansion groove 8 is greater than the inner diameter of the first half-coupling 1. The outer side of the sprocket shaft 3 is provided with external splines, and the end of the sprocket shaft 3 is inserted from the end of the first half-coupling 1 away from the second half-coupling 2, and the external splines on the sprocket shaft 3 are matched with the internal splines on the inner side of the first half-coupling 1.

[0032] A pressing plate 9 is arranged in the outer expansion groove 8 at the opening of the first half-coupling 1, and the pressing plate 9 includes a large-diameter section and a small-diameter section, which are coaxially arranged, the large-diameter section is located inside the outer expansion groove 8, and the small-diameter section is located inside the opening of the first half-coupling 1 close to the second half-coupling 2. A plurality of counterbores are arranged on the side end face of the pressing plate 9 close to the second half-coupling 2, and the counterbores are in communication with the side end face of the pressing plate 9 away from the second half-coupling 2.

[0033] A plurality of threaded holes are arranged on the side end face of the sprocket shaft 3 close to the second half-coupling 2, and a fixing bolt 10 is arranged in each counterbore of the pressing plate 9, the fixing bolt 10 corresponds to the threaded hole on the end face of the sprocket shaft 3 in a one-to-one manner, and the fixing bolt 10 is screwed with the corresponding threaded hole after passing through the counterbore, so as to fixedly connect the pressing plate 9, the first half-coupling 1 and the sprocket shaft 3.

[0034] The outer side of the second half coupling 2 is provided with external splines, the inner side of the output shaft of the speed reducer is provided with internal splines, and the external splines on the outer side of the second half coupling 2 are matched with the internal splines on the inner side of the output shaft of the speed reducer.

[0035] The gear coupling belongs to a rigid-flexible gear coupling, in order to facilitate the disassembly of the chain wheel shaft 3, the outer engagement teeth 6 on the first half coupling 1 and the second half coupling 2 use drum-type teeth. The drum-type teeth have many advantages, such as allowing a larger angular displacement: the allowable angular displacement of the drum-type teeth is 1.5°, which is increased by 50%, and under the same modulus, tooth number and tooth width, the drum-type teeth have a larger angular displacement than straight teeth; the contact area of the tooth surface can be improved: the periodic relative sliding of the inner and outer tooth surfaces improves the transmission torque capacity and prolongs the service life; the bearing capacity is stronger, and other characteristics: under the same outer diameter of the inner tooth sleeve 4 and the large outer diameter of the half coupling, the bearing capacity of the drum-type gear coupling is increased by 15%-20% than that of the straight-type gear coupling; the drum-type tooth surface improves the basic conditions of the inner and outer teeth, and improves the friction force and wear condition between the tooth surfaces, reduces the noise, and shortens the maintenance period.

[0036] The gear coupling is made into a split structure, and the contact mode of the chain wheel shaft 3 with the gear coupling and the speed reducer is changed. The threaded hole on the end face of the chain wheel shaft 3 is fixedly connected with the pressing plate 9 on the end face of the first half coupling 1 by the fixing bolt 10, so that the chain wheel shaft 3 and the first half coupling 1 and the second half coupling 2 are always in a relatively static state. The other side of the second coupling is connected with the speed reducer, and the size length of the external splines of the second coupling is 180mm, which provides sufficient conditions for easy disassembly. The movable distance of the chain wheel shaft 3 inside the rack is 110mm, and the movable distance of the coupling connected with the chain wheel shaft 3 is 80mm. The space can completely meet the left and right movement of the chain wheel shaft 3, and the chain wheel shaft 3 can be replaced without disassembling the power part during the replacement process.

[0037] Since the connection mode of the traditional chain wheel shaft 3 with the speed reducer is relatively simple, once the chain wheel shaft 3 fails during use, it needs to be disassembled from the power part before being replaced, whether it is in the underground or on the ground. The structure of the gear coupling is optimized here to better achieve the purpose of easy disassembly.

[0038] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A gear coupling for an apron conveyor, characterized by: The utility model provides a kind of chain wheel shaft and reducer connection structure, including the first half coupling (1) being connected with chain wheel shaft (3) and the second half coupling (2) being connected with reducer, first half coupling (1) and second half coupling (2) are mutually close one end outside sleeve joint with same inner tooth sleeve (4), first half coupling (1) is inserted with chain wheel shaft (3) by inner spline, the output shaft of reducer is sleeve joint with second half coupling (2) outside by outer spline;Two location bolts (5) are screwed on inner tooth sleeve (4), and location bolt (5) is respectively contacted with first half coupling (1) and second half coupling (2).

2. A gear coupling for an apron conveyor as claimed in claim 1, characterized in that: The first half coupling (1) and the second half coupling (2) are both cylindrical structures with open ends, the first half coupling (1) is coaxially arranged with the second half coupling (2), and a circle of outer meshing teeth (6) is fixedly arranged on the outer side of the end of the first half coupling (1) and the second half coupling (2) close to each other.

3. A gear coupling for an apron conveyor as claimed in claim 2, characterized in that: The inner tooth sleeve (4) is a cylindrical structure with open ends, a circle of inner meshing teeth is fixedly arranged on the inner side of the inner tooth sleeve (4), two screw holes communicating with the inside and outside are symmetrically arranged in the middle of the inner tooth sleeve (4), a coaxial washer groove is arranged at the opening outside of the screw hole, and one of the location bolts (5) is screwed at each screw hole.

4. A gear coupling for an apron conveyor as claimed in claim 3, characterized in that: The circle of outer meshing teeth (6) at the end of the first half coupling (1) and the second half coupling (2) is engaged with the circle of inner meshing teeth on the inner side of the open end of the inner tooth sleeve (4).

5. A gear coupling for an apron conveyor as claimed in claim 1, characterized in that: The inner side of the first half coupling (1) is provided with inner splines, the opening end of the first half coupling (1) close to the second half coupling (2) is provided with an outer expansion groove (8), the inner diameter of the outer expansion groove (8) is larger than the inner diameter of the first half coupling (1), the outer side of the chain wheel shaft (3) is provided with outer splines, the end of the chain wheel shaft (3) is inserted into the opening end of the first half coupling (1) away from the second half coupling (2), and the outer splines on the chain wheel shaft (3) are matched with the inner splines on the inner side of the first half coupling (1).

6. A gear coupling for an apron conveyor as claimed in claim 5, characterized in that: A pressing plate (9) is arranged in the outer expansion groove (8) of the opening end of the first half coupling (1), and the pressing plate (9) includes a large-diameter section and a small-diameter section, the large-diameter section and the small-diameter section are coaxially arranged, the large-diameter section is located in the outer expansion groove (8), and the small-diameter section is located in the opening end of the first half coupling (1) close to the second half coupling (2).

7. A gear coupling for an apron conveyor as claimed in claim 6, characterized in that: A plurality of counterbores are arranged on the side end face of the pressing plate (9) close to the second half coupling (2), and the counterbores are in communication with the side end face of the pressing plate (9) away from the second half coupling (2).

8. A gear coupling for an apron conveyor as claimed in claim 7, characterized in that: A plurality of screw holes are arranged on the side end face of the chain wheel shaft (3) close to the second half coupling (2), a fixing bolt (10) is arranged in each counterbore of the pressing plate (9), the fixing bolts (10) correspond to the screw holes on the end face of the chain wheel shaft (3) in a one-to-one manner, the fixing bolts (10) are screwed with the corresponding screw holes after passing through the counterbores, so that the pressing plate (9), the first half coupling (1) and the chain wheel shaft (3) are fixedly connected.

9. A gear coupling for an apron conveyor as claimed in claim 1, characterized in that: The outer side of the second half-coupling (2) is provided with external splines, and the inner side of the output shaft of the speed reducer is provided with internal splines, and the external splines of the outer side of the second half-coupling (2) are matched with the internal splines of the inner side of the output shaft of the speed reducer.

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