Coal mining machine body connecting and fastening device

Abstract

The utility model discloses a coal mining machine body connecting and fastening device which comprises a connecting pull rod, the connecting pull rod comprises a connecting rod and two positioning rings, the two positioning rings and the connecting rod are fixed into a whole, and a left traction part shell and a right traction part shell are fastened between the two positioning rings. C-shaped grooves are formed in the left traction part shell and the right traction part shell correspondingly, C-shaped distance pads are arranged between the positioning ring and the left traction part shell and between the positioning ring and the right traction part shell correspondingly, and a limiting boss is arranged on one side of each C-shaped distance pad; the left end of the C-shaped groove in the left traction part shell and the right end of the C-shaped groove in the right traction part shell are each provided with a groove. According to the utility model, the structural design is reasonable, the dumbbell type connecting pull rod is formed after the positioning rings are respectively arranged at the two ends of the connecting rod, and the C-shaped grooves for clamping the connecting rod are formed in the left traction part shell and the right traction part shell, so that the load can be effectively dispersed, and the connecting rod is prevented from moving in the coal mining process.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine machinery, and in particular relates to a connecting and fastening device for a coal mining machine body. Background Art

[0002] Coal mining machines are vital tools in the coal mining process. They work in a harsh environment and have high work intensity, so they need extremely strong anti-torsion and anti-fatigue capabilities to ensure production. During the coal mining process, the fuselage connection is a key component that bears the torsion force of the fuselage, the reaction force of cutting, the pressure of the coal seam, etc., so its structure needs to be tightened and strengthened. The traditional connection method is a hydraulic tie rod connection, which requires a thread-screw hole tightening method. During the coal mining process, stress concentration is prone to occur near the end face of the fuselage, causing the tie rod to break, resulting in serious consequences. In addition, the fastening device is prone to movement during the coal mining process, affecting the strength of the fuselage. Therefore, it is necessary to propose a coal mining machine fuselage connection and fastening device to solve the above problems. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a coal mining machine body connection and fastening device in view of the deficiencies in the above-mentioned prior art. The device has a reasonable structural design. A dumbbell-type connecting pull rod is formed by respectively arranging a positioning ring at both ends of the connecting rod, and C-shaped grooves for the connecting rod to be clamped are provided on the left traction part shell and the right traction part shell, which can effectively disperse the load and prevent the connecting rod from moving during the coal mining process.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a coal mining machine body connection and fastening device, characterized in that: it includes a connecting rod for connecting the left traction part shell and the right traction part shell together, the connecting rod includes a connecting rod and two positioning rings respectively arranged at both ends of the connecting rod, the two positioning rings are fixed to the connecting rod as a whole, the left traction part shell and the right traction part shell are fastened between the two positioning rings, the left traction part shell and the right traction part shell are both provided with a C-shaped groove for the connecting rod to be clamped, a C-shaped distance pad is provided between one positioning ring and the left end of the C-shaped groove on the left traction part shell and between the other positioning ring and the right end of the C-shaped groove on the right traction part shell, and the C-shaped distance pad is clamped on the connecting rod;

[0005] A limiting boss is arranged on one side of the C-shaped distance pad to prevent the connecting rod from moving, and a groove for the limiting boss to be clamped is arranged on the left end of the C-shaped groove on the left traction part shell and the right end of the C-shaped groove on the right traction part shell.

[0006] The above-mentioned coal mining machine body connection and fastening device is characterized in that the positioning ring is welded to the connecting rod.

[0007] The above-mentioned coal mining machine body connection and fastening device is characterized in that: the positioning ring is spliced ​​by two circular end plates and a curved side plate to form a hollow structure, the curved side plate is connected between the outer rings of the two circular end plates, and the circular end plate and the curved side plate are both coaxially arranged with the connecting rod.

[0008] The above-mentioned coal mining machine body connection and fastening device is characterized in that a plurality of waist-shaped welding grooves are provided on the curved side plate.

[0009] The above-mentioned coal mining machine body connection and fastening device is characterized in that the two ends of the connecting rod respectively extend to the outside of the side away from the two positioning rings.

[0010] The above-mentioned coal mining machine body connection and fastening device is characterized in that: the limiting boss includes an arc segment boss and a rectangular segment boss connected to the arc segment boss, the arc segment boss is located at the open end of the C-shaped distance pad, and the side of the rectangular segment boss away from the arc segment boss is flush with the closed end of the C-shaped distance pad.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The utility model provides a positioning ring at each end of the connecting rod, and fixes the positioning ring and the connecting rod as a whole, so that the connecting rod and the positioning ring are in surface contact, which can effectively disperse the load and thus solve the stress concentration problem existing in the traditional hydraulic tie rod connection method.

[0013] 2. The utility model provides C-shaped grooves for the connecting rod to be mounted on the left traction part housing and the right traction part housing, so that the connecting rod can be tightly connected to the left traction part housing and the right traction part housing, thereby effectively preventing the connecting rod from moving during the coal mining process and ensuring the strength of the machine body.

[0014] 3. The utility model provides C-type distance pads between the positioning ring and the left traction part shell and the right traction part shell, and provides a limiting boss on one side of the C-type distance pad. The C-type distance pad can play a role of limiting and preventing slippage after the connecting rod is installed, thereby ensuring the accuracy of the relative position and the stability of the fuselage.

[0015] To sum up, the utility model has a reasonable structural design. A dumbbell-type connecting rod is formed by respectively arranging a positioning ring at both ends of the connecting rod, and C-shaped grooves for the connecting rod to be clamped are provided on the left traction part shell and the right traction part shell. This can effectively disperse the load and prevent the connecting rod from moving during coal mining.

[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the connection structure of the connecting rod and the C-shaped distance pad of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the C-type distance pad of the utility model.

[0019] Figure 3 This is a usage state diagram of the utility model.

[0020] Description of reference numerals:

[0021] 1—connecting rod; 2—positioning ring; 2-1—circular end plate;

[0022] 2-2—curved side plate; 2-3—waist-shaped welding groove; 3—C-type distance pad;

[0023] 4—limiting boss; 4-1—arc segment boss; 4-2—rectangular segment boss;

[0024] 5—C-type slot. DETAILED DESCRIPTION

[0025] like Figures 1 to 3 As shown, the utility model includes a connecting rod for connecting the left traction part housing and the right traction part housing together, the connecting rod includes a connecting rod 1 and two positioning rings 2 respectively arranged at both ends of the connecting rod 1, the two positioning rings 2 are fixed to the connecting rod 1 as a whole, the left traction part housing and the right traction part housing are fastened between the two positioning rings 2, the left traction part housing and the right traction part housing are both provided with a C-shaped groove 5 for the connecting rod 1 to be clamped, a C-shaped distance pad 3 is provided between one positioning ring 2 and the left end of the C-shaped groove 5 on the left traction part housing and between the other positioning ring 2 and the right end of the C-shaped groove 5 on the right traction part housing, and the C-shaped distance pad 3 is clamped on the connecting rod 1;

[0026] A limiting boss 4 is provided on one side of the C-shaped distance pad 3 to prevent the connecting rod 1 from moving, and a groove for the limiting boss 4 to be clamped is provided at the left end of the C-shaped groove 5 on the left traction part shell and the right end of the C-shaped groove 5 on the right traction part shell.

[0027] In actual use, by providing a positioning ring 2 at each end of the connecting rod 1, and fixing the positioning ring 2 and the connecting rod 1 as a whole, so that there is surface contact between the connecting rod 1 and the positioning ring 2, the load can be effectively dispersed, thereby solving the stress concentration problem existing in the traditional hydraulic tie rod connection method.

[0028] It should be noted that by providing C-shaped grooves 5 for the connecting rod 1 to be clamped on the left traction part shell and the right traction part shell, the connecting rod 1 can be tightly connected to the left traction part shell and the right traction part shell, thereby effectively preventing the connecting rod 1 from moving during the coal mining process and ensuring the strength of the machine body.

[0029] In specific implementation, by setting a C-type distance pad 3 between the positioning ring 2 and the left traction part shell and the right traction part shell, and setting a limiting boss 4 on one side of the C-type distance pad 3, the C-type distance pad 3 can play a role of limiting and preventing slippage after the connecting rod is installed, thereby ensuring the accuracy of the relative position and the stability of the fuselage.

[0030] In this embodiment, the positioning ring 2 is welded to the connecting rod 1 .

[0031] In actual use, welding the positioning ring 2 and the connecting rod 1 can not only ensure the reduction of stress concentration, but also reduce costs and facilitate manufacturing.

[0032] In this embodiment, the positioning ring 2 is formed by splicing two circular end plates 2-1 and a curved side plate 2-2 to form a hollow structure, and the curved side plate 2-2 is connected between the outer circles of the two circular end plates 2-1. The circular end plate 2-1 and the curved side plate 2-2 are both coaxially arranged with the connecting rod 1.

[0033] In this embodiment, a plurality of waist-shaped welding grooves 2-3 are provided on the curved side plate 2-2.

[0034] In actual use, by opening a plurality of waist-shaped welding grooves 2-3 on the curved side plate 2-2, multi-point welding of the positioning ring 2 can be achieved, thereby reducing welding deformation and weld stress; the load can be dispersed, stress concentration can be avoided, the overall strength can be increased, the service life can be extended, and the connecting rod can be made more stable during use.

[0035] In this embodiment, both ends of the connecting rod 1 extend to the outside of the two positioning rings 2 which are away from each other.

[0036] In actual use, both ends of the connecting rod 1 extend to the outside of the positioning ring 2, so that a certain length can be reserved at both ends of the connecting rod 1, thereby facilitating the use of a pressing tool to apply a pre-tightening force thereto.

[0037] like Figure 2 As shown, in this embodiment, the limiting boss 4 includes an arc segment boss 4-1 and a rectangular segment boss 4-2 connected to the arc segment boss 4-1, the arc segment boss 4-1 is located at the open end of the C-type distance pad 3, and the rectangular segment boss 4-2 is close to the closed end of the C-type distance pad 3.

[0038] In actual use, the arrangement of the arc segment boss 4 - 1 can prevent the connecting rod 1 from axial movement, and the arrangement of the rectangular segment boss 4 - 2 can prevent the connecting rod 1 from radial movement.

[0039] It should be noted that the grooves at the left end of the left traction part shell and the right end of the right traction part shell both include arc segment grooves and rectangular segment grooves. The arc segment grooves are located at the closed end of the C-shaped groove 5, and the rectangular segment grooves are located at the open end of the C-shaped groove 5.

[0040] When the utility model is actually used, the connecting rod is first installed in the C-shaped groove 5 opened on the left traction part shell and the right traction part shell, and then a C-shaped distance pad 3 is installed between the positioning ring 2 at the right end of the connecting rod and the right traction part shell, and then a pressing tool is used to apply a pre-tightening force to the left end of the connecting rod, and according to the elongation of the connecting rod 1 after pressing, a C-shaped distance pad 3 of corresponding thickness is added between the positioning ring 2 at the left end of the connecting rod and the left traction part shell to achieve a tight connection of the fuselage.

[0041] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A coal mining machine body connection and fastening device, characterized in that: The invention comprises a connecting rod for connecting a left traction part shell and a right traction part shell together, wherein the connecting rod comprises a connecting rod (1) and two positioning rings (2) respectively arranged at two ends of the connecting rod (1), the two positioning rings (2) are fixed to the connecting rod (1) as a whole, the left traction part shell and the right traction part shell are fastened between the two positioning rings (2), the left traction part shell and the right traction part shell are both provided with a C-shaped groove (5) for clamping the connecting rod (1), a C-shaped distance pad (3) is arranged between one positioning ring (2) and the left end of the C-shaped groove (5) on the left traction part shell and between the other positioning ring (2) and the right end of the C-shaped groove (5) on the right traction part shell, and the C-shaped distance pad (3) is clamped on the connecting rod (1); A limiting boss (4) is provided on one side of the C-shaped distance pad (3) to prevent the connecting rod (1) from moving, and a groove for the limiting boss (4) to be clamped is provided at the left end of the C-shaped groove (5) on the left traction part shell and the right end of the C-shaped groove (5) on the right traction part shell.

2. A coal mining machine body connection and fastening device according to claim 1, characterized in that: The positioning ring (2) is welded to the connecting rod (1).

3. A coal mining machine body connection and fastening device according to claim 2, characterized in that: The positioning ring (2) is formed by splicing two annular end plates (2-1) and a curved side plate (2-2) to form a hollow structure, the curved side plate (2-2) is connected between the outer rings of the two annular end plates (2-1), and the annular end plates (2-1) and the curved side plates (2-2) are both coaxially arranged with the connecting rod (1).

4. A coal mining machine body connection and fastening device according to claim 3, characterized in that: A plurality of waist-shaped welding grooves (2-3) are provided on the curved side plate (2-2).

5. A coal mining machine body connection and fastening device according to claim 1, characterized in that: Both ends of the connecting rod (1) extend to the outside of the two positioning rings (2) on a side away from each other.

6. A coal mining machine body connection and fastening device according to claim 1, characterized in that: The limiting boss (4) comprises a circular arc segment boss (4-1) and a rectangular segment boss (4-2) connected to the circular arc segment boss (4-1), and the circular arc segment boss (4-1) is located at the open end of the C-shaped distance pad (3).

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